Design for Manufacturing Final Project
|
|
- Joanna Lucas
- 5 years ago
- Views:
Transcription
1 Design for Manufacturing Final Project Air Compressor Device Masoud Golshadi Natalie Ferrari Timothy Nash Gregory Feather Spring 2012 Rochester Institute of Technology
2 Table of Contents 1. Introduction Project Plan Bill of Materials Design for Manufacturing Analysis L-Shape Bracket DFM Analysis Process Plan Cost Estimation Plastic Housing DFM Analysis Process Plan Cost Estimation Gear Holder Analysis Process Plan Cost Estimation Design for Assembly Analysis Assembling Process of the Components DFA Analysis of the Compressor Device Time Improvement Conclusions.34 2
3 1. Introduction The following is an overall analysis of Design for Manufacture (DFM), Design for Assembly (DFA), and cost estimation of a Harbour Freight air compressor. This air compressor is a very nice example of a cheap product of what could be very costly. The market value of this product is approximately eight dollars while competitor prices range from anywhere between twelve to one hundred thirty dollars. The product was strictly analyzed through three main components, the plastic housing, the L- shape bracket and the gear holder. Using DFM guidelines, these components were analyzed to determine the overall quality of each part. As it was expected due to the cheapness of the part, the overall quality of the parts failed to meet many DFM guidelines as a consequence to eliminating manufacturing processes that in the end, would have added a sufficient amount to the overall cost per product. Assuming Harbour Freight desired to make 500,000 air compressor products the overall cost would be approximately 850,000 dollars. With a market value of about eight dollars, and assuming they sold every single product, this would leave Harbour Freight with a profit of 3,150,000 dollars. 2. Project Plan The project involves several stages and its process was started by creating a list of component and parts. Then the parts were modeled into CAD software called SolidWorks. In the modeling of the parts, attention was introduced to all the details and the final CAD files contain components with precise dimensions. After that, the parts were assembled together to produce the final product and the assembly animation was then created out of that. The drawings of each components and the final assembly were made from the CAD models. Three different parts of the compressor were then selected to be analyzed by design for manufacturing guidelines. The parts were included a main plastic housing manufactured by injection molding, gear holder and L-shape bracket manufactured by die casting process. The cost estimation analysis of each component was revealed the total cost of the parts and the features capable of improvement. Then, design for assembly analysis was employed to estimate the assembly time based on Boothroyd-Dewhurst criteria. During that analysis, the assembling problems were revealed and based on the DFA criteria, a better design was introduced. All these works were done in 4 weeks and in a group of 4 people. The tasks of each person are presented as follow: Masoud Golshadi: CAD Modeling, DFA Analysis, Animation, Preparing the Final Report Natalie Ferrari: Drawings, BOM, DFM Analysis and Cost Estimation (Gear Holder) Timothy Nash: Drawings, DFM Analysis and Cost Estimation (Plastic Housing) Gregory Feather: Assembly, DFM Analysis and Cost Estimation (L-Shape Bracket) 3
4 3. Bill of Materials The bill of materials (BOM) is indicated as the following table: DFM Project Parts List Item NO. Make/Purchase Description QTY. Picture 1 Make Compressor Housing Side Make Compressor Housing Side Make Gasket 1 4 Make Connecting Rod 1 5 Make Piston 1 6 Purchased Pin 1 7 Purchased O-Ring #1 1 8 Purchased Cylinder 1 9 Make Crank 1 10 Make Main Shaft 1 11 Purchased Small Shaft 1 4
5 Item NO. Make/Purchase Description QTY. Picture 12 Purchased Motor 1 13 Purchased Small Gear 1 14 Make Large Gear 1 15 Make Gear Holder 1 16 Make Bush 1 17 Make L shaped Bracket 1 18 Purchased Spring 1 19 Purchased Plunger Seal 1 20 Purchased O-Ring # Make Casted Screw 1 22 Purchased Intake Plate 1 23 Purchased Long Screw 2 24 Purchased Spring Washer 2 25 Purchased Motor Screw 2 26 Purchased Housing Screw 5 27 Purchased Retaining Ring 1 28 Purchased Sticker # Purchased Sticker # Purchased Sticker #3 1 5
6 4. Design for Manufacturing Analysis Design for manufacturing (DFM) is the general engineering art of designing products in such a way that they are easy to manufacture. It is the process of proactively designing products to optimize all the manufacturing functions such as fabrication, assembly, test, procurement, shipping, delivery, service and repair, and in the other hand, assure the best cost, quality, reliability, regulatory compliance, safety and customer satisfaction. Since the products can be quickly assembled from fewer parts, following the DFM criteria can reduce many costs. Designing the parts is for ease of fabrication and commonality with other designs. Furthermore, DFM encourages standardization of parts, maximum use of purchased parts, modular design, and standard design features. The result is a broader product line that is responsive to customer needs. The basic DFM idea exists in almost all engineering disciplines, but with different variation of rules and details depending on the manufacturing technology. This design practice not only focuses on the design aspect of a part but also on the production feasibility. If these DFM guidelines are not followed, it will result in iterative design, loss of manufacturing time and overall resulting in longer time to market. Hence many organizations have adopted concept of Design for Manufacturing. Depending on various types of manufacturing processes there are sets guidelines for DFM analysis. These DFM guidelines help to precisely define various tolerances, rules and common manufacturing checks related to DFM. In the following sections, the DFM analysis of 3 components of the compressor device is presented continued by explanation of post-processing steps and cost estimation of the design. The processes are included the injection molding for the main plastic housing of the compressor, and die casting of the gear holder and L-shape bracket parts. There are several DFM guidelines which have been violated in designing of these components resulting in a poor quality and higher cost. Improving these mistakes can reduce the cost and satisfy the customers need in a proper way. 6
7 4.1. L-Shape Bracket DFM Analysis The DFM analysis of the L-shape bracket was done in several stages starting with the preferred parting line and followed by revealing the existing problems and a solution for them. Parting edge is colored in blue and purple. The purple line splits the cylinder in half, the top and bottom will be formed by different molds. The teal and pink surfaces will require side action slides due to their orientation, which is perpendicular to the movement of the mold. There are many surfaces on the L-Bracket which require draft angles. The specific surfaces and angles will be examined in detail below. The surfaces highlighted in green have a draft angle in the correct direction for the movement of the top mold. The surfaces highlighted in red are correct for direction of movement of the bottom half of the mold. The yellow surfaces have no draft angle, whether one is required or not. 7
8 On the bottom of the part where the seal sits, there is no draft angle. To conform to DFM guidelines the draft angle should be at least 5 degrees, based on the 0.08" depth. On the bottom of the part where the air intake flap sits, there is no draft angle. To conform to DFM guidelines the draft angle should be at least 7 degrees, based on the 0.03" depth. On the base of the part at the rib, there is no draft angle. To conform to DFM guidelines the draft angle should be at least 1.75 degrees, based on the 0.1" depth. 8
9 Around the outer edge on the base of the part, the draft angle should be 1.25 degrees to conform to DFM guidelines, based on a thickness of 0.28". There is no draft on the selected hole, to conform to DFM guidelines, the draft on the hole should be 3 degrees based on a depth of 0.28". The draft on the boss and inside edge should be 3.5 degrees based on a depth of 0.1" to conform to DFM guidelines. 9
10 There is no draft on the center hole, to conform to DFM guidelines, the draft angle should be 4.5 degrees based on the depth of 0.16". Since the top third of the hole is tapped, the hole will have a maximum core depth based on its diameter. Following DFM guidelines the max depth of the cored hole should be 0.727", where as the actual depth is 1.02". Either the diameter of the hole should be larger to accommodate this depth or the hole depth should be less. The hole will then also have a draft angle created by the change in radii of the hole's core. 10
11 The draft on the face (blue arrow) should match the draft on the outer edge (red arrow), which is 1.25 degrees, to allow for a smooth transition and surface. guidelines. The draft angle on this edge should be 0.9 degrees based on the depth of 0.49" to conform to DFM 11
12 The draft angle for the outside of the cylinder should be 0.75 degrees based on the depth of 0.9" to conform to DFM guidelines. The angle for the wall that the arrow is pointing to should be 1.75 degrees based on a depth of 0.15" to conform to DFM guidelines. Thickness should be consistent throughout the casted part, in the areas pointed out the thickness is not consistent and it should be balanced with the rest of the part. Coring or a redesign may be necessary. 12
13 For a cored hole with the radius of 0.15 in, the maximum depth should be roughly 0.5 inches. The depth of the shown cored hole is roughly twice that. Either the hole radius should be increased or the depth decreased to conform to DFM. 13
14 The bosses are attached to the wall and can cause sinks to occur due to the added thickness, the bosses should instead be connected to the wall by a rib. The inner and outer edges pointed out have a sharp corner; sharp corners concentrate stresses and lower die life. Each should have a radius of 1.5 times the thickness. 14
15 The internal threads should be machined after the casting operation is complete, this will result in more precise threads to seal and be air tight as possible Process Plan The process of manufacturing of the L-shape bracket component is started by die casting. After the die casting, a trimming machine trims the outside flashes of the part. The center hole is then required to be taped and threaded. So, another machining process is involved in this stage Cost Estimation The cost estimation of the gear holder part was done by considering the following assumptions: Machine has a clamping capacity of 100 tons and a shot capacity of 16.5 in 3. The total number of components to be cast = 500,000 Die casting machine cycle time = 60 seconds The cost of operating the die casting machine (casting+operator) = $35/hr. The cost of operating the trim press (press+operator) = $25/hr. The trimming process is fully automated, hence the time to trim any number of parts produced in one cycle is 15 seconds. The cost of a single cavity die is $40,000. The cost of a single aperture trimming die is $20,000. The material used is Zinc No. 3, and you pay $1.2/lb for it. 15
16 Any material not used in the part itself (e.g. feed system and overflow wells) can be recycled without any waste. If temporarily ignore whether or not the die casting machines available are large enough, the number of die openings for this part to minimize the cost would be specified as follows: The force of the molten metal which is acting on the die by assuming the 4 for the number of die openings would be as follows: The required shot volume of zinc material by assuming the 4 as the number of die openings can be calculated as follows: To select the correct press machine, the clamping force needs to be considered and according to the press specifications and following calculations, the 100 ton press would handle that force. Therefore, the number of die cavities would be maintained as 4: Using the same number of die cavities, the die casting process cost (C dc ) would be as follows: And the cost of trimming (C tr ), using the final number of die openings would be as follows: 16
17 Using the final number of die openings, the cost of the multicavity die (C dn ) can be calculated as follows: So the cost of the multiaperture trim die (C tn ) is calculated as follows: The total alloy cost (C ta ) would be: And finally, the total cost of making the 500,000 L-shape bracket for the compressor is: 17
18 4.2. Plastic Housing DFM Analysis The DFM analysis of the plastic housing was done in several stages starting with the preferred parting line and followed by revealing the existing problems and a solution for them. Part A: The purple line indicates the parting line of the plastic housing Part B: 1. Base a. Problem: Contains sharp corners i. Solution: Add a draft of at least 0.5 degrees in necessary locations b. Problem: Several locations require draft ii. Solution: Add radii of 1.5 T to sharp corners 18
19 c. Problem: Wall thickness fails to follow uniformity iii. Solution: Add steps to added thickness to allow for uniformity 2. Ribs a. Problem: All ribs contain no draft i. Solution: Add a draft of at least 0.5 degrees to all ribs b. Problem: Sharp corners ii. Solution: Add radii of 1.5 T to remove sharp corners c. Problem: The rib thickness iii. Solution: Reduce the rib thickness from.06in to a maximum of 0.048in d. Problem: Height should be reduced iv. Solution: The rib height should be reduced to a maximum of 3T 19
20 3. Bosses a. Problem: All bosses contain no draft i. Solution: Add a draft of at least 0.5 degrees b. Problem: Sharp corners ii. Solution: Add radii of 1.5 T to remove sharp corners c. Problem: The depth to diameter ratio of the hole is too large. Diameter = 0.1in, Depth = 0.7in iii. Solution: Add steps to the hole or increase the diameter of the hole/decrease the depth of the hold to provide the bosses with more stability 4. Outer Rib Extrusions a. Require a draft i. Add a draft of at least 0.5 degrees to all ribs b. Sharp corners ii. Add radii of 1.5 T to remove sharp corners 20
21 5. Casing Indentation a. Problem: Sharp corners i. Solution: Add radii of 1.5 T to remove sharp corners 6. Base Ribs a. Two ribs are too close to each other i. Relocate a rib at least 2T away from the other or remove rib completely if possible 7. Internal Rib Extrusions a. Sharp corners i. Add radii of 1.5T to remove sharp corners 21
22 b. Requires draft ii. Add draft of at least 0.5 degrees to all ribs c. The thickness needs to be reduced iii. Reduce thickness to a maximum of 0.048in d. Height needs to be reduced iv. Reduce height to a maximum of 3T Process Plan The process of manufacturing of the plastic housing component is done by injection molding. Since the injection molding provides all the part requirements such as required surface finish and dimensional tolerances, there is no post-processing stage Cost Estimation The cost estimation of the plastic housing part was done by considering the following assumptions: The total number of components to be injected molded = 500,000 Die casting machine cycle time = 40 seconds The cost of a single injection mold is $30,000. The material used is Polycarbonate, and you pay $1.75/lb for it. Any material not used in the part itself (e.g. feed system and overflow wells) can be recycled without any waste. To minimize the cost, the number of cavities for this part would be calculated as follows: By assuming 2 for the number of cavities, the acting force on the mold would be as follows: 22
23 The required shot volume of Polycarbonate if assume the number of cavities from the previous calculation would be: The cost of the mold base can be found as follows: The processing cost can be calculated as follows: Therefore, the cost of the multicavity injection mold would be as follows: The total polymer cost is: And finally, the total cost of making the 500,000 parts can be found as follows: 23
24 4.3. Gear Holder DFM Analysis The DFM analysis of the gear holder was done in several stages starting with the preferred parting line and followed by revealing the existing problems and a solution for them. Part A: The blue line is the identified preferred parting line. The orange and green colors separate the top half of the die from the bottom half of the die. Part B: 1. Base Extrude a. Problem: Sharp corners in dies are hard to maintain, and produce localized stresses and heat build up i. Solution: Add a fillet of about 1.5t to all sharp corners Sharp Edges 24
25 b. Problem: No draft on edges of base. Recommended draft for zinc alloys with a wall thickness between is 3.5 degrees i. Solution: Increase draft for top half of base part to at least 3.5 degrees No Draft on Sides of Base 2. Base Holes a. Problem: Base holes are not drafted. With a depth of 0.13 it is recommended that the hole have a 4.5 degree draft. i. Solution: Add a 4.5 degree draft to the bearing hole 0.13 No Draft b. Problem: Base holes should have fillets entering and exiting hole to reduce stress concentrations i. Solution: Add fillets to sharp edges of hole Sharp Corners 3. Back Hole a. Problem: Back hole is not drafted. With a depth of 0.36 it is recommended that the hole have a 3 degree draft. i. Solution: Add a 3 degree draft to the bearing hole 25
26 b. Problem: Base holes should have fillets entering and exiting hole to reduce stress concentrations i. Solution: Add fillets to sharp edges of hole Sharp Corners No Draft 4. Middle Ribs a. Problem: Rib is wider than the casting wall thickness i. Solution: Decrease rib width to that of the casting wall thickness t = 0.07 t = 0.03 b. Problem: Sharp corners in dies are hard to maintain, and produce localized stresses and heat build up i. Solution: Add a fillet of at least the wall thickness to all sharp corners Sharp corners 26
27 5. Side Ribs a. Problem: Rib is wider than the casting wall thickness i. Solution: Decrease rib width to that of the casting wall thickness t = 0.03 t = Process Plan The process of manufacturing of the gear holder component is started by die casting. After the die casting, a trimming machine trims the outside flashes of the part. The two side mounting holes are then required to be taped and threaded. So, another machining process is involved in this stage Cost Estimation The cost estimation of the gear holder part was done by considering the following assumptions: Machine has a clamping capacity of 100 tons and a shot capacity of 16.5 in 3. The total number of components to be cast = 500,000 Die casting machine cycle time = 60 seconds The cost of operating the die casting machine (casting+operator) = $35/hr. The cost of operating the trim press (press+operator) = $25/hr. The trimming process is fully automated, hence the time to trim any number of parts produced in one cycle is 15 seconds. The cost of a single cavity die is $40,000. The cost of a single aperture trimming die is $20,000. The material used is Zinc No. 3, and you pay $1.2/lb for it. Any material not used in the part itself (e.g. feed system and overflow wells) can be recycled without any waste. 27
28 If temporarily ignore whether or not the die casting machines available are large enough, the number of die openings for this part to minimize the cost would be specified as follows: The force of the molten metal which is acting on the die by assuming the 4 for the number of die openings would be as follows: The required shot volume of zinc materail by assuming the 4 as the number of die openings can be calculated as follows: To select the correct press machine, the clamping force needs to be considered and according to the press specifications and following calculations, the 100 ton press would handle that force. Therefore, the number of die cavities would be maintained as 4: Using the same number of die cavities, the die casting process cost (C dc ) would be as follows: And the cost of trimming (C tr ), using the final number of die openings would be as follows: 28
29 Using the final number of die openings, the cost of the multicavity die (C dn ) can be calculated as follows: So the cost of the multiaperture trim die (C tn ) is calculated as follows: The total alloy cost (C ta ) would be: And finally, the total cost of making the 500,000 gear holder for the compressor is: 29
30 5. Design for Assembly Analysis Design for assembly (DFA) is a process for improving product design for easy and low-cost assembly, focusing on functionality and on assemblability concurrently. DFA recognizes the need to analyze both the part design and the whole product for any assembly problems early in the design process. The aim of DFA is to simplify the product so that the cost of assembly is reduced. However, consequences of applying DFA usually include improved quality and reliability, and a reduction in production equipment and part inventory. These secondary benefits often outweigh the cost reductions in assembly. In this project the Boothroyd-Dewhurst criteria has been employed. The Boothroyd-Dewhurst DFA evaluation centers on establishing the cost of handling and inserting component parts. The process can be applied to manual or automated assembly, which is further subdivided into high-speed dedicated or robotic. An aid to the selection of the assembly system is also provided by a simple analysis of the expected production volume, payback period required, number of parts in the assembly, and number of product styles. Regardless of the assembly system, parts in the assembly are evaluated in terms of ease of handling and ease of insertion, and a decision is made as to the necessity of the part in question. The findings are then compared to synthetic data, and from this a time and cost is generated for the assembly of that part. The opportunity for reducing this is found by examining each part in turn and identifying whether each exists as a separate part for fundamental reasons. These fundamental reasons include relative movement of the part with respect to the other assembled parts, isolation or material difference and the necessity to have a separate part from all those already assembled. The second stage of the analysis is to examine the handling and insertion of each component part. For manual assembly, a two-digit handling code and a two-digit insertion code are identified from synthetic data tables. The tables categorize components with respect to their features for handling such as size, weight, and required amount of orientation. For insertion, there are categories for part alignment, the type of securing method, and whether the part is secured on insertion or as a separate process. These codes are then cross-referenced to identify the time for that operation from the table Assembling Process of the Components The process of assembling the components of compressor device is started with press fitting the bush inside the gear holder. Therefore, the gear holder is set inside a press machine and then the bush is 30
31 press fitted inside the hole. Since the bush has axial symmetry and because several burs can be observed at the part, easy alignment with resistance in insertion was chosen. The small gear is then fitted at the motor shaft by press fitting and the motor is mounted to the gear holder by two screws. The small shaft and the large shaft are secured into the crank due to a small tolerances and press operation. After that, the motor sub-assembly is grasped and the large shaft is inserted into the bush and the large gear is then secured at its position by a retaining ring. The piston sub-assembly is included the connecting rod mounted to the piston by a pin. At the top of the piston, there is an o-ring which provides sealing for the compressed air inside the cylinder. The piston sub-assembly is also set at its position into the motor subassembly and then the cylinder is introduced to the complex. Now, a spring is grasped and the plunger seal is put on one side of it. Then the L-shape bracket is picked up and oriented to locate the spring with plunger seal its head. Casted screw is positioned at the top and it is tightened afterward. The L-shape bracket is then rotated by 180 degrees to reach the bottom. Now, its o-ring is mounted and then the intake plate is secured at its place. Since the intake plate is very thin and difficult to grasp, and because it requires tweezer to locate it at the its position, the proper insertion and handling code has been selected. The L-shape bracket sub-assembly is then introduced to the top of the motor sub-assembly and by the help of two long screws and their spring washers, it is mounted to the top of the complex. Now, the entire mechanical sub-assembly is located at its position on one of the plastic housings and secured by an elastic gasket. The other half of the main housing is then introduced and secured by the notches on the housing and mounted by five screws. The stickers are the last parts to be added and since there are 3 stickers on 3 different outer sections of the compressor housing, the orientation operation is required to reach the correct position of them DFA Analysis of the Compressor Device The following table illustrates detailed DFA analysis of the system based on the Boothroyd- Dewhurst criteria. 31
32 Part or Operation Description No. of Alpha Beta Tool Acquired Handling Handling Insertion Insertion Total Items Symmetry Symmetry Time Code Time Code Time Time Gear Holder Set the Gear Holder onto a press machine Bush Grasp the Bush Press Operation Fit the Bush into the Gear Holder by press machine Motor Set the Motor onto a press machine Small Gear Grasp the Small Gear Press Operation Fit the Small Gear into the Motor shaft by press machine Motor Screws Fix the Motor SA to Gear Holder SA Crank Grasp the Crank Small Shaft Grasp the Small Shaft Press Operation Fit the Small Shaft to the Crank Main Shaft Grasp the Main Shaft Press Operation Fit the Main Shaft to the Crank Motor SA Set in fixture Large Gear Grasp the Large Gear Crank SA Grasp the Crank SA Assembling Operation Fit the Large Gear to the Crank SA inside the Motor SA Retaining Ring Grasp Retaining Ring Fitting Operation Set Retaining Ring into the Main Shaft end Piston Grasp the Piston Connecting Rod Grasp Connecting Rod Pin Grasp the Pin Press Operation Fit the Pin into the Piston O-Ring Grasp the O-Ring Fitting Operation Set the O-Ring into its groove in the Piston Cylinder Grasp the Cylinder Assembling Operation Put the Piston SA into the Cylinder Motor SA Grasp the Motor SA Piston and Cylinder SA Grasp the Piston and Cylinder SA Assembling Operation Fit the Piston SA into the Motor SA Plunger Seal Grasp the Plunger Seal Spring Grasp the Spring Fitting Operation Fit the Plunger Seal into the Spring L-Shape Bracket Grasp the L-Shape Bracket O-Ring Grasp the O-Ring Fitting Operation Set the O-Ring into its groove in the L-Shape Bracket Intake Plate Grasp the Intake Plate Fitting Operation Put the Intake Plate into its place inside the L-Shape Bracket Orientation Operation Rotating the L-Shape Bracket Spring SA Grasp Spring SA Assembling Operation Put the Spring SA into L-Shape Bracket SA Casted Screw Drive the Casted Screw into its place on L-Shape Bracket Spring Washer Grasp the Spring Washer Long Screws Grasp The Long Screw Fitting Operation Put the Spring Washer on the Long Screw Motor SA Set the Motor SA into fixture L-Shape Bracket SA Grasp L-Shape Bracket SA Positioning Operation Put the L-Shape Bracket SA at the top of Motor SA Driving Screws Driving the Long Screws SA at the both side Plastic Housing 1 Grasp The Plastic Housing Gasket Grasp The gasket Assembling Operation Put the Gasket into its place in the Plastic Housing Mechanical SA Grasp the Mechanical SA Assembling Operation Fit the Mechanical SA into the Plastic Housing Plastic Housing 2 Grasp The Plastic Housing Fitting Operation Fit the Plastic Housing 2 into the Plastic Housing Housing Screws Fix the two housings together Sticker #1 Affix the Sticker to the Plastic Housing Orientation Operation Rotate the Compressor Assembly Sticker #2 Affix the Sticker to the Plastic Housing Orientation Operation Rotate the compressor assembly Sticker #3 Affix the Sticker to the bottom of Compressor Assembly Total Time (seconds) Total Number of Parts
33 5.3. Assembly Time Improvement There are several features which can be improved under DFA perspective. Since the steel bush in the motor sub-assembly is a separate part and is a seat for the main shaft, it takes several minutes to align and install it inside the gear holder by press fitting. If the prepared hole inside the gear holder contains enough machining allowance and after die casting, machining operation makes a smooth and proper place for the main shaft, two assembly processes would be eliminated. Although, eliminating that bush could increase the manufacturing cost but it can decrease the assembly cost and save seconds during the assembly. In the other hand, the small shaft can be casted in the crank and by doing that, press operation for fitting the shaft into the crank would be removed. Because dimensions of the shaft doesn t require high accuracy and a die casted cast iron can provide enough surface finish for this purpose, combination of these two parts are feasible. This elimination can reduce the assembly time by seconds. Sticking the labels on the plastic housing is another place for saving time. One of the stickers has a specific place to seat but the other one should be attached without any seating position. It means that the operator needs to pay more attention to install this sticker in a correct position and orientation. Thus, adding a notch or a small pocket to the plastic mold can help the operator during the final assembly stages and save almost 3 seconds. The following table shows the improved version of the DFA analysis which requires seconds less than the previous one to finish the assembly. 33
34 Part or Operation Description No. of Alpha Beta Tool Acquired Handling Handling Insertion Insertion Total Items Symmetry Symmetry Time Code Time Code Time Time Gear Holder Set the Gear Holder onto a press machine Bush Grasp the Bush Press Operation Fit the Bush into the Gear Holder by press machine Motor Set the Motor onto a press machine Small Gear Grasp the Small Gear Press Operation Fit the Small Gear into the Motor shaft by press machine Motor Screws Fix the Motor SA to Gear Holder SA Crank Grasp the Crank Small Shaft Grasp the Small Shaft Press Operation Fit the Small Shaft to the Crank Main Shaft Grasp the Main Shaft Press Operation Fit the Main Shaft to the Crank Motor SA Set in fixture Large Gear Grasp the Large Gear Crank SA Grasp the Crank SA Assembling Operation Fit the Large Gear to the Crank SA inside the Motor SA Retaining Ring Grasp Retaining Ring Fitting Operation Set Retaining Ring into the Main Shaft end Piston Grasp the Piston Connecting Rod Grasp Connecting Rod Pin Grasp the Pin Press Operation Fit the Pin into the Piston O-Ring Grasp the O-Ring Fitting Operation Set the O-Ring into its groove in the Piston Cylinder Grasp the Cylinder Assembling Operation Put the Piston SA into the Cylinder Motor SA Grasp the Motor SA Piston and Cylinder SA Grasp the Piston and Cylinder SA Assembling Operation Fit the Piston SA into the Motor SA Plunger Seal Grasp the Plunger Seal Spring Grasp the Spring Fitting Operation Fit the Plunger Seal into the Spring L-Shape Bracket Grasp the L-Shape Bracket O-Ring Grasp the O-Ring Fitting Operation Set the O-Ring into its groove in the L-Shape Bracket Intake Plate Grasp the Intake Plate Fitting Operation Put the Intake Plate into its place inside the L-Shape Bracket Orientation Operation Rotating the L-Shape Bracket Spring SA Grasp Spring SA Assembling Operation Put the Spring SA into L-Shape Bracket SA Casted Screw Drive the Casted Screw into its place on L-Shape Bracket Spring Washer Grasp the Spring Washer Long Screws Grasp The Long Screw Fitting Operation Put the Spring Washer on the Long Screw Motor SA Set the Motor SA into fixture L-Shape Bracket SA Grasp L-Shape Bracket SA Positioning Operation Put the L-Shape Bracket SA at the top of Motor SA Driving Screws Driving the Long Screws SA at the both side Plastic Housing 1 Grasp The Plastic Housing Gasket Grasp The gasket Assembling Operation Put the Gasket into its place in the Plastic Housing Mechanical SA Grasp the Mechanical SA Assembling Operation Fit the Mechanical SA into the Plastic Housing Plastic Housing 2 Grasp The Plastic Housing Fitting Operation Fit the Plastic Housing 2 into the Plastic Housing Housing Screws Fix the two housings together Sticker #1 Affix the Sticker to the Plastic Housing Orientation Operation Rotate the Compressor Assembly Sticker #2 Affix the Sticker to the Plastic Housing Orientation Operation Rotate the compressor assembly Sticker #3 Affix the Sticker to the bottom of Compressor Assembly Total Time (seconds) Total Number of Parts
35 6. Conclusions Overall the Harbour-Freight compressor was designed to be inexpensively manufactured, to do this many guidelines were ignored or deemed unnecessary. The guidelines that were ignored may not affect the functionality of the part; however the life expectancy and reliability of the compressor will more than likely suffer. Also the manufacturing moulds will also have lower life expectancy due to sharp edges and missing draft angles. The plastic housing appears to already suffer damage from the cheap manufacturing process. The bosses used to connect the two housing pieces together are already warped due to the thin plastic material used to help assemble the part together. Harbour Freight created the housing assuming no costumer would in fact take the product apart as it is clearly noticeable that the inside has no surface finishing. The locations of each ejector pin are clearly identifiable along with some remnants of flash around some holes and sides of the part. The gear holder shows an attempt to perform some surface finishing. There is evidence of what used to be a draft angle near its base. There are tool marks throughout the entirety of the top of the base. There are also tool marks near some of the ribs of the part in what can be assumed as a process made to remove sink marks near those ribs. The gear holder fails to remove some flash near the slot of the main gear and that of the motor. It seems that this flash was neglected as it does not interfere with the rotation of the two gears near the slot. The main gear itself also seems to have neglected flash in the five holes as it does not seem to interfere with the actual function of the product. This part also contains a lettering indentation of the number one. It appears to be that a similar product is created alongside the gear holder in an effort to reduce the overall manufacturing cost of casting. The L-Bracket, like many other parts from this product contains many sharp edges and is missing very important draft angles. It is another example of actions made by Harbour Freight to reduce the cost of the die. After analyzing the list of parts, there are more bought parts than there are manufactured in house. By buying many parts in bulk, therefore eliminating to pay for moulds, operating costs and tooling cost, the cost of the part appears to be reduced as well as reduces the production cost. In conclusion, the Harbour Freight air compressor is a very cheaply designed product with more thought put into creating a large profit from selling the parts rather than an engineering aspect and the effectiveness of the part. 35
External Hard Drive: A DFMA Redesign
University of New Mexico External Hard Drive: A DFMA Redesign ME586: Design for Manufacturability Solomon Ezeiruaku 4-23-2013 1 EXECUTIVE SUMMARY The following document serves to illustrate the effects
More informationLecture #8. Design for Manufacturing DfM. ME 2110: Creative Decisions and Design
Lecture #8 Design for Manufacturing DfM Phases of Design ) Customer Requirements 2) Specification Development 3) Conceptual Design 4) Detail Design 5) Specification of Production 6) Manufacture 7) Recycle
More informationDesign for X. ME 2110 Creative Decisions and Design
Design for X ME 20 Creative Decisions and Design Thomas R. Kurfess, Ph.D., P.E. HUSCO/Ramirez Distinguished Chair in Fluid Power and Motion Control Woodruff School of Mechanical Engineering Georgia Institute
More informationThe Tanktwo String Battery for Electric Cars
PUBLIC FOR GENERAL RELEASE The String Battery for Electric Cars Architecture and introduction questions@tanktwo.com www.tanktwo.com Introduction In March 2015, introduced a completely new battery for Electric
More informationDesign for X (DFX) Design for Manufacture. 1/2 Oz., 90 PSI. (X is a Variable Name)
Phases of Design ) Customer Requirements 2) Specification Development 3) Conceptual Design 4) Detail Design 5) Specification of Production 6) Manufacture 7) Recycle Design for X (DFX) (X is a Variable
More informationCompliance Test Results. of Independently Manufactured. Automotive Replacement Headlamps. to FMVSS 108. Study I. March 18, 2003
Compliance Test Results of Independently Manufactured Automotive Replacement Headlamps to FMVSS 108 Study I March 18, 2003 Prepared By Certified Automotive Parts Association 1518 K Street NW, Suite 306
More informationSFI SPECIFICATION 6.3 EFFECTIVE: FEBRUARY 26, 2014 *
SFI SPECIFICATION 6.3 EFFECTIVE: FEBRUARY 26, 2014 * PRODUCT: Containment Bellhousing for SFI Clutch Assemblies for supercharged and nitrous-oxide applications 1.0 GENERAL INFORMATION 1.1 This SFI Specification
More informationSUPER CAPACITOR CHARGE CONTROLLER KIT
TEACHING RESOURCES ABOUT THE CIRCUIT COMPONENT FACTSHEETS HOW TO SOLDER GUIDE POWER YOUR PROJECT WITH THIS SUPER CAPACITOR CHARGE CONTROLLER KIT Version 2.0 Teaching Resources Index of Sheets TEACHING
More informationFLANGE. Flanges used for
FLANGE FLANGE Flanges with rating class designations 150, 300, 400, 600, 900, 1500, and 2500 in sizes NPS 1 2 through NPS 24 ASME B16.5: Pipe Flanges and Flanged Fittings (NPS 24 ) ASME B16.47: NPS 26
More informationBurr-Rx Brushes. Introducing the most aggressive line of compliant brushing tools ever! New Filament Cuts 400% Faster For Minimum Cycle Times!
~Ceramic Filament Brochure.qxd 4/4/08 9:51 AM Page 1 Burr-Rx es Introducing the most aggressive line of compliant brushing tools ever! Mounts Directly onto Shell Mill Holder! New Filament Cuts 400% Faster
More informationHow to Achieve a Successful Molded Gear Transmission
How to Achieve a Successful Molded Gear Transmission Rod Kleiss Figure 1 A molding insert tool alongside the molded gear and the gear cavitiy. Molded plastic gears have very little in common with machined
More informationVehicle LATCH Hardware Evaluation Protocol (Version II) November 2015
Vehicle LATCH Hardware Evaluation Protocol (Version II) November 2015 Vehicle LATCH Hardware Evaluation Protocol (Version II) Document Revision History A history of revisions to this document is provided
More informationDesign and Analysis of Pressure Die Casting Die for Side Differential Cover of Mini truck
Design and Analysis of Pressure Die Casting Die for Side Differential Cover of Mini truck 1 A Chakravarthi P.G student, Department of Mechanical Engineering,KSRM CE, kadapa-516003 2. R Rama Krishna Reddy,
More informatione-get-m1005 GE Industrial Systems Instructions for Choosing the Optimal Rotor Construction
g e-get-m1005 GE Industrial Systems Instructions for Choosing the Optimal Rotor Construction These instructions do not purport to cover all of the details or variations in equipment nor to provide for
More informationBimotion Advanced Port & Pipe Case study A step by step guide about how to calculate a 2-stroke engine.
Bimotion Advanced Port & Pipe Case study A step by step guide about how to calculate a 2-stroke engine. 2009/aug/21. Bimotion. This paper is free for distribution and may be revised, for further references
More informationSFI SPECIFICATION 6.1 EFFECTIVE: FEBRUARY 26, 2014 *
SFI SPECIFICATION 6.1 EFFECTIVE: FEBRUARY 26, 2014 * PRODUCT: Containment Bellhousing for SFI 1.1 & 1.2 Clutch Assemblies for limited normally aspirated applications, and forced induction applications
More informationA Recommended Approach to Pipe Stress Analysis to Avoid Compressor Piping Integrity Risk
A Recommended Approach to Pipe Stress Analysis to Avoid Compressor Piping Integrity Risk by: Kelly Eberle, P.Eng. Beta Machinery Analysis Calgary, AB Canada keberle@betamachinery.com keywords: reciprocating
More informationLEM Transducers Generic Mounting Rules
Application Note LEM Transducers Generic Mounting Rules Fig. 1: Transducer mounted on the primary bar OR using housing brackets 1 Fig. 2: Transducer mounted horizontally OR vertically 2 Fig. 3: First contact
More informationVehicle LATCH Hardware Evaluation Protocol (Version I) June 2015
Vehicle LATCH Hardware Evaluation Protocol (Version I) June 2015 Vehicle LATCH Hardware Evaluation Protocol (Version 1) 1. Background 1.1. Lower Anchors and Tethers for Children (LATCH) requirements, introduced
More informationCase Report Conformal cooling using the example of a core for a die-casting mold insert 3D printing in tool construction and die-casting
Case Report Conformal cooling using the example of a core for a die-casting mold insert 3D printing in tool construction and die-casting Optimizing tool construction and die-casting processes at Oskar
More informationDevelopment of Noise-reducing Wheel
Introduction of new technologies Development of Noise-reducing Wheel Development of Noise-reducing Wheel Youichi KAMIYAMA* Hisamitsu TAKAGI* Katsushi ISHII* Mikio KASHIWAI** ABSTRACT Tire cavity noise
More informationTRANSLATION (OR LINEAR)
5) Load Bearing Mechanisms Load bearing mechanisms are the structural backbone of any linear / rotary motion system, and are a critical consideration. This section will introduce most of the more common
More informationPRESSURE RELIEF VALVE: DISASSEMBLY, INSPECTION, and ASSEMBLY CONTENTS
Page 1 of 35 PRESSURE RELIEF VALVE: DISASSEMBLY, INSPECTION, and ASSEMBLY CONTENTS 1. Overview 2. Disassembly of Valves with Liner Subs and press-in Bushing (Models 30525 and 30550). 2.1. Routine Disassembly
More informationFault Diagnosis of Lakvijaya Power Plant: A Case Study of an Anti-Rotational Pin Failure
Journal of Engineering and Technology of the Open University of Sri Lanka (JET-OUSL), Vol. 4, No.1, 2016 Fault Diagnosis of Lakvijaya Power Plant: A Case Study of an Anti-Rotational Pin Failure N.C Tantrigoda
More informationChapter 1. Introduction. manufacturing metal goods [1]. In most of the early casting processes, some of which
Chapter 1 Introduction Casting processes are among the oldest (around 5000 B.C.) methods for manufacturing metal goods [1]. In most of the early casting processes, some of which are still applicable today,
More informationTrust but verify: the value of acceptance testing
Trust but verify: the value of acceptance testing Les Miller, Dave VanLangevelde and Rick Burgess, Kaydon Bearings For many applications, the values and engineering data in bearing manufacturers catalogs
More information6. Pre-print checks. 3D Touch
Page 1 1. 6. Pre-print checks........................................................................................... 1.1 a. Clearing the print bed..................................................................................
More informationPrusa i3 Printer Assembly Guide
Prusa i3 Printer Assembly Guide Special thanks to Carlos Sanchez and Miguel Sanchez for the graphics. All graphics captured from their great animation: http://www.carlos-sanchez.com/ Prusa3/ For copyright
More informationTHS SERIES FILTER BUTTERFLY VALVE STYLE FACE PIPING
THS SERIES FILTER BUTTERFLY VALVE STYLE FACE PIPING INSTALLATION AND USER S GUIDE IMPORTANT SAFETY INSTRUCTIONS READ AND FOLLOW ALL INSTRUCTIONS SAVE THESE INSTRUCTIONS TABLE OF CONTENTS 1.0 PRINCIPALS
More informationSafety factor and fatigue life effective design measures
Safety factor and fatigue life effective design measures Many catastrophic failures have resulted from underestimation of design safety and/or fatigue of structures. Failure examples of engineered structures
More informationManipulators. Example 1: The Claw
Manipulators With these examples we will demonstrate some basic designs to accomplish each of the game piece challenges involved in the 2018 FIRST Global game Energy Impact to: 1. Collect fuel cubes and
More informationSenior Substation Project Lead Engineer
Senior Substation Project Lead Engineer Are you ready to be a technology pioneer? Oil and gas factories 3000 meters underwater, heavy locomotive traction motors, electric vehicle chargers that deliver
More informationKolbenschmidt Pierburg Group
Kolbenschmidt Pierburg Group KS Aluminum Pistons for Truck Applications Requirements The development of on- and off-highway diesel engines for a wide spectrum of applications is affected by global emission
More informationEVOLUTION OF THE MODEL A FORD FRAME ASSEMBLY A-5005-A, B, C AND D ACCORDING TO THE FORD ENGINEERING RELEASES STEVE C. PLUCKER COPYRIGHT, 2005
1 EVOLUTION OF THE MODEL A FORD FRAME ASSEMBLY A-5005-A, B, C AND D ACCORDING TO THE FORD ENGINEERING RELEASES BY STEVE C. PLUCKER COPYRIGHT, 2005 AS OF: JANUARY 9, 2006 OCTOBER, 1927 A1------A137 OCTOBER
More informationWalthers/Life-Like USRA Steam Locomotive
North Raleigh Model Railroad Club Installing Decoders in N Scale Locomotives Detailed Instructions Walthers/Life-Like USRA 2-8-8-2 Steam Locomotive by David Derway May 17, 2010 Table of Contents Introduction...
More informationMold Design. 7. Mold Design Runner & Gate. Bong-Kee Lee School of Mechanical Engineering Chonnam National University
7. Runner & Gate Bong-Kee Lee Chonnam National University Delivery System Delivery System (Feed System) sprue (for a cold runner mold) cold slug well (for a cold runner mold) runner gate basic feed system
More informationJET FORMING. Brakes Shears Rolls Rotary and Hand Notcher Machines Presses
Brakes....................................... 111 Shears....................................... 114 Rolls........................................ 115 Rotary and Hand Notcher Machines.............. 117
More informationElectromagnetic Fully Flexible Valve Actuator
Electromagnetic Fully Flexible Valve Actuator A traditional cam drive train, shown in Figure 1, acts on the valve stems to open and close the valves. As the crankshaft drives the camshaft through gears
More informationTOOLING STANDARDS AND MACHINE SPECIFICATIONS DOCUMENT #END 001 REVISION LEVEL: A9
1 P.O. Box 447 160 E Pond, Romeo, MI. 48065 Phone (586) 752-4527 Fax (586) 752-0896 TOOLING STANDARDS AND MACHINE SPECIFICATIONS DOCUMENT #END 001 REVISION LEVEL: A9 DISTRIBUTION LIST OF TOOLING STANDARDS
More informationWhy bigger isn t always better: the case for thin section bearings
White Paper Why bigger isn t always better: the case for thin section bearings Richard Burgess, Les Miller and David VanLangevelde, Kaydon Bearings Typical applications Thin section bearings have proven
More informationLinear Shaft Motors in Parallel Applications
Linear Shaft Motors in Parallel Applications Nippon Pulse s Linear Shaft Motor (LSM) has been successfully used in parallel motor applications. Parallel applications are ones in which there are two or
More informationPYRTE. Building The Front Axle, Fork and Steering
PYRTE Building The Front Axle, Fork and Steering The front axle on this traction engine is a very simple affair, in that it is a rectangular steel rod, sat on edge, with a pivot in the centre, which is
More informationTransportation Products
Transportation Products Butterfly Valves Hopper Tees Actuators Accessories A Name You ve Trusted for Years... Resilient Seated Butterfly Valves 400 & 480 Series 1 Piece Body Design This economical, resilient
More information4-WHEEL WASTE AND RECYCLABLES CONTAINERS 1100 L SPLIT LID BE CLEVER BE FLEXIBLE!
4-WHEEL WASTE AND RECYCLABLES CONTAINERS 1100 L SPLIT LID BE CLEVER BE FLEXIBLE! MGB 1100 L SPLIT LID FROM THE IDEA TO THE PRODUCT THE CHALLENGE The number of 1100 litre waste and recyclables containers
More informationWeight Allowance Reduction for Quad-Axle Trailers. CVSE Director Decision
Weight Allowance Reduction for Quad-Axle Trailers CVSE Director Decision Brian Murray February 2014 Contents SYNOPSIS...2 INTRODUCTION...2 HISTORY...3 DISCUSSION...3 SAFETY...4 VEHICLE DYNAMICS...4 LEGISLATION...5
More informationREU: Improving Straight Line Travel in a Miniature Wheeled Robot
THE INSTITUTE FOR SYSTEMS RESEARCH ISR TECHNICAL REPORT 2013-12 REU: Improving Straight Line Travel in a Miniature Wheeled Robot Katie Gessler, Andrew Sabelhaus, Sarah Bergbreiter ISR develops, applies
More informationKISSsys Application 008: Gearbox Concept Analysis
KISSsoft AG Frauwis 1 CH - 8634 Hombrechtikon Telefon: +41 55 264 20 30 Calculation Software for Machine Design Fax: +41 55 264 20 33 www.kisssoft.ch info@kisssoft.ch 1. Abstract KISSsys: Efficient Drivetrain
More informationTIRE & RETREAD CO. PRODUCT CATALOG Redmon Road Cleveland, NC
PRODUCT CATALOG 1315 Redmon Road Cleveland, NC 27013 704-278-9621 www.rdhtire.com INTRODUCTION In today s OTR tire market, retreading has become the ultimate value in the tire industry. Because of the
More informationPROTECT DRIVES YOU AUTOMOTIVE TRANSPORT PROTECTION.
AUTOMOTIVE PROTECT W H A T DRIVES YOU AUTOMOTIVE TRANSPORT PROTECTION www.nmc-nomafoam.com 1 2 INDEX PROCESSING NEW VEHICLE TRANSPORT PROTECTION 8 Bumper protection 10 Door protection 12 Door handle protection
More informationFiber Abrasive Finishing Systems for End-Deburring Extruded Aluminum Profiles
Fiber Abrasive Finishing Systems for End-Deburring Extruded Aluminum Profiles Prepared by: D. Mark Fultz, VP Marketing for Abtex Corporation, Dresden, NY ABSTRACT The expanding use of aluminum extruded
More informationPolyvalve TM Black Label TM Pipe Repair Clamps
Polyvalve TM Pipe Repair Clamps Pipe Repair Clamps - FLOWSERVE POLYVALVES S.A.S. repair clamps are flexible clamps, made out of one or several stainless steel bands with lugs. Bolts and nuts mounted on
More informationSmart Opener Retrofit by Richard Bevan (bimmerfest riku2)
Smart Opener Retrofit by Richard Bevan (bimmerfest riku2) Document history V 1.0 02.04.2015 Document created. Introduction This document tells how to retrofit the smart opener to a 2011 BMW 5 series (F10).
More informationLABOUR ESTIMATE GUIDE
INSTALLATION INSTRUCTIONS FOR 2003-Current Audi S4 (B6 & B7) Includes Sedan, Avant, & Cabriolet These instructions are applicable to vehicles equipped with either manual or automatic tiptronic transmissions
More informationpanelclaw.com Polar Bear III for 10 Degree
panelclaw.com Polar Bear III for 10 Degree Installation Manual Document Number 9910024 Rev A March 2014 Revision History Rev ECO # Date Description of Changes Approved By 01 TBD 02-FEB-14 Initial Draft
More informationKaydon white paper. The importance of properly mounting thin section bearings. an SKF Group brand. by Rob Roos, Senior Product Engineer
The importance of properly mounting thin section by Rob Roos, Senior Product Engineer an SKF Group brand Figure 1 Radial Load Reversing Thrust Overturning Moment Thin section ball have a much thinner cross-section
More information(18pt) 1. Introduction. (9pt) Abstract
(9pt) Mechanical jigs and fixtures Solutions for more reliability and accuracy (10pt) Mechanical Engineering (12pt) (18pt) Patrick Bachmann 1* and Markus Embacher 2 (9 pt) 1 Team Schmidis Armee, HTBLA
More informationJCM 101 Universal Clamp Couplings
JCM 1 Universal Clamp Couplings JCM 1 Universal Clamp Coupling - Single Band JCM Universal Clamp Couplings provide a full circumferential seal and wide range for the permanent repair or reconnection of
More informationCHAPTER 3 PROBLEM DEFINITION
42 CHAPTER 3 PROBLEM DEFINITION 3.1 INTRODUCTION Assemblers are often left with many components that have been inspected and found to have different quality characteristic values. If done at all, matching
More informationBall splines can be configured for an endless number of automated operations. Demystifying Ball Spline Specs
Ball splines can be configured for an endless number of automated operations. Demystifying Ball Spline Specs Place a recirculating-ball bushing on a shaft and what do you get? Frictionless movement of
More informationHot Runners and Temperature Controllers
Hot Runners and Temperature Controllers Better parts, faster cycles Benefits Complete tooling solutions Application specific solutions Pristine gate quality Fastest cycles Fast color change Accurate, reliable
More informationLUCAS HEADLAMP SWITCH - PR18/4B
LUCAS HEADLAMP SWITCH - PR18/4B By the mid-fifties Miller had lost considerable ground to Lucas in the competition for the British motorcycle market and Vincents switched to Lucas when the Series D machines
More informationSW20 Coolant System Maintenance.
SW20 Coolant System Maintenance. This article contains information on how to change and bleed the coolant, as well as flushing the system. It is based on information in the service manual, tips gathered
More informationWhat do I need to do when my parts are delivered via Truck Freight Delivery? When the shipment arrives, verify you have received all your items.
GENERAL QUESTIONS Do your products come with a warranty? (Disclaimer: All claims are handled on a case by case basis) All products come with a limited manufacturer's warranty. The warranty covers shipping
More informationBULLETIN 507. Mechanical Forging Presses
BULLETIN 507 Mechanical Forging Presses...-. ~ " The Erie Foundry Company designs and manufactu res quality machine tools that are used around the world. Erie presses have been built to stamp, cut, blank,
More informationRam Cushions and Pressure Parallels Dynamic Solutions For A Global Market
Nitro-Dyne Ram Cushions and Pressure Parallels APPROVED 97/23/EC Dynamic Solutions For A Global Market Nitro-Dyne Ram Cushions and Pressure Parallels Table of Contents Page Introduction...2 The Advantages...3
More informationWhat Everyone Should Know About Automatic Grease Lubricators
What Everyone Should Know About Automatic Grease Lubricators [Type the company address] White Paper Sponsored by: [Type the phone number] [Pick the date] PLI, LLC 1509 Rapids Dr Racine, WI 53404 Phone:
More informationDOWNLOAD PDF MECHANICAL CAR JACK DESIGN
Chapter 1 : Mechanical Jack ebay Mechanical jacks, such as car jacks and house jacks, lift heavy equipmentand are rated based on lifting capacity (for example, the DESIGN OF HYDRAULIC JACK. Scissor car
More informationSPECIALTY PRODUCTS INDEX... A-1 MTO SPECIALTY PRODUCTS... A-2. Bronze Bushed... A-3. Ball Bearing... A-4. Ball Bearing - Non-Metallic...
Index SECTION A SPECIALTY SPECIALTY PRODUCTS PRODUCT PAGE INDEX................................................................................... A-1 MTO SPECIALTY PRODUCTS................................................................
More informationJUL 17 Rev M
Hand Crimping Tool and Cable Preparation Kit; PN 59981-1 Instruction Sheet 408-6788 24 JUL 17 Rev M PROPER USE GUIDELINES Cumulative Trauma Disorders can result from the prolonged use of manually powered
More informationWireless Digital Repeater (WiDR) network's packaging/ Initial deployment review
Rochester Institute of Technology RIT Scholar Works Presentations and other scholarship 2006 Wireless Digital Repeater (WiDR) network's packaging/ Initial deployment review Margot Sandy Follow this and
More informationLiteDOT Installation Document
LiteDOT Installation Document This document designed to aid in installation of LiteDOT s on Jeep TJ models, other models are similar. NOTE: Installing LiteDOT s on a Jeep where the 2 necessary mounting
More informationA Generalised Approach In Identifying Control Link Tolerances And Its Effect On Design Tolerances Of Mechanism Using Instantaneous Center
A Generalised Approach In Identifying Control Link Tolerances And Its Effect On Design Tolerances Of Mechanism Using Instantaneous Center C. C. Handa and H. T. Thorat 1 KDK College of Engineering 1 Visveshvarya
More informationRetrofit Instructions for Replacing an In-Tube Motor from within a Face Mount Shaver Door
Retrofit Instructions for Replacing an In-Tube Motor from within a Face Mount Shaver Door 1. Remove all Garage Door Style rollers from the curtain door s pultrusion tubes. This will be most easily done
More informationInstructions: PRR Sam Rea Shops X58 Class Box Car Kit Tangent Part Numbers: XX through XX 9/2015
Instructions: PRR Sam Rea Shops X58 Class Box Car Kit Tangent Part Numbers: 14000-XX through 14002-XX 9/2015 Thank you for purchasing the Tangent Scale Models PRR Sam Rea Shops X58 Class Box Car Kit! A
More informationM3 Design Product Teardown Waterpik WP-100 Oral Irrigator
22 Jun, 2009 Why do the product teardowns? M3 Design Product Teardown Waterpik WP-100 Oral Irrigator Part of the product development process is to apply knowledge gained from prior experience during the
More informationSide Mount Installation & Wiring Instructions
E81/E87/E90/E91/E92/F22/F30/F31/F32/F80/F82/F87 (and other cars with the same sliders) Side Mount Installation & Wiring Instructions These instructions assume a basic comfort with crimping and/or soldering.
More informationComparison Chart. extremely difficult. Finally, separated components can rarely be re-used.
JAN 2014 Traditional Connections Why Go Keyless Keyed Bushing Systems Both QD and Taper-Lock bushing and weld-on hub systems are popular component mounting technologies. Yet both are ultimately keyed connections
More informationDANGEROUS GOODS PANEL (DGP) WORKING GROUP MEETING (DGP-WG/17)
International Civil Aviation Organization DGP-WG/17-WP/24 20/3/17 WORKING PAPER DANGEROUS GOODS PANEL (DGP) WORKING GROUP MEETING (DGP-WG/17) Montreal, 24 to 28 April 2017 Agenda Item 2: Development of
More informationProbabilistic Analysis for Resolving Fatigue Failures of the Connecting Rod Oil Hole
Probabilistic Analysis for Resolving Fatigue Failures of the Connecting Rod Oil Hole Jianxiong Chen Sr. Engineering Specialist Applied Mechanics Dept., Copeland Corporation, Sidney, Ohio, USA Donald Draper
More informationMounting Overlap Shield. Face Clamps. Gap. Seat Depth. Lead In Chamfer. Loose Fit.
Mounting Introduction: Reali-Slim thin section ball bearings have a crosssection thickness that is much thinner than standard bearings of the same diameter, and are therefore more sensitive to shaft and
More informationULTRACAPACITORS FOR UNINTERRUPTIBLE POWER SUPPLY (UPS)
white paper ULTRACAPACITORS FOR UNINTERRUPTIBLE POWER SUPPLY (UPS) Electricity, flowing continuously through the grid, is something that most of today s amenities rely on. For any electrical device to
More information!!! New Technology in Correction Officer Safety!!!
THE MILLENNIUM PATENTED ACCESS CONTROL SYSTEM IS A REGISTERED PATENTED ITEM RECOGNIZED UNDER FEDERAL PATENT LAWS! ANY ATTEMPT TO DUPLICATE THE MILLENNIUM PATENTED ACCESS CONTROL SYSTEM, OR ANOTHER UNIT
More informationstructure table of contents: squarebot chassis parts and assembly 2.2 concepts to understand 2.27 subsystems interfaces 2.37
The structural subsystem of the robot is responsible for physical support. It holds everything in place, and is, in effect, the durable skeleton of the robot to which all the other subsystems are attached.
More informationREMOVING THRUST ASSEMBLY IN 90AD EXTRUDER
TSB DSD 0001 TECHNICAL SERVICE BULLETIN REMOVING THRUST ASSEMBLY IN 90AD EXTRUDER 1-800- 278-3353 www.jcsteele.com 2018 J.C. Steele & Sons, Inc. SAFETY J.C. Steele and Sons equipment is designed to process
More informationConverting a Chevy Non-positraction rear-end to a positraction rear using an Eaton posi unit.
Converting a 56-62 Chevy Non-positraction rear-end to a positraction rear using an Eaton posi unit. Tom Parsons Non-posi unit Posi unit 1 Converting a 56-62 Chevy Non-positraction rear-end to a positraction
More informationFlex Tube. User guide
Flex Tube User guide CONTENTS INTRODUCTION...2 Welcome 2 Safety 2 INSTALLATION...3 Flex Tube orientation 3 Bending a Flex Tube 4 Cutting a Flex Tube 4 Connection and mounting kits 5 Feed cable kit 5 End
More informationThe distinguishing features of the ServoRam and its performance advantages
ADVANCED MOTION TECHNOLOGIES INC 1 The distinguishing features of the ServoRam and its performance advantages What is a Linear Motor? There are many suppliers of electrical machines that produce a linear
More informationL Standard Parts for Mould Making
A Die Sets B Precision Ground Plates and Flat Bars C Lifting and Clamping Devices Shanks, Lifter Studs and Lifting Hooks, Eyebolts Clamping Claws, Screws and Bolts D Guide Elements E Ground Precision Components
More informationSimple Gears and Transmission
Simple Gears and Transmission Simple Gears and Transmission page: of 4 How can transmissions be designed so that they provide the force, speed and direction required and how efficient will the design be?
More informationPress News. Silent, dynamic and powerful: The new motor series ECI Compact by ebm-papst
Press News Silent, dynamic and powerful: The new motor series ECI 42.40 Compact by ebm-papst All-inclusive: The turn-key drive solutions The electronically commutated ECI 42.40 Compact, with a nominal
More informationInstallation Instructions for Part #: KPS01 - KPS07 Karcepts A/C & P/S Removal Kit (With Alternator Relocation)
Installation Instructions for Part #: KPS01 - KPS07 Karcepts A/C & P/S Removal Kit (With Alternator Relocation) This kit provides the SOLUTION for eliminating the air conditioning compressor and power
More informationACCURPRESS HYBRID Precision Forming Systems
ACCURPRESS HYBRID Precision Forming Systems www.accurpress.com Accurshear Original CNC Accurpress 1990 Original Accurshear 1976 Original Accurpress 1975 ABOUT US With over 40 years in the marketplace,
More informationCRITICAL SUCCESS FACTORS
Features Critical Success Factors Position Sensing Swing Clamps New Item: Hydraulic Intensifier 4:1 Power to Hold, Prices in Check 1334 East 6th Avenue Emporia, KS 66801 800-992-0236 www.vektek.com R Made
More informationFinite Element Analysis of Clutch Piston Seal
Finite Element Analysis of Clutch Piston Seal T. OYA * F. KASAHARA * *Research & Development Center Tribology Research Department Three-dimensional finite element analysis was used to simulate deformation
More informationInstant Chat off the main page of Or simply call our tech team at
02-07 WRX/STI Air Oil Separator for Top Mounted Intercooler Setups 2013-02- 27 Thank you for purchasing this PERRIN product for your car! Installation of this product should only be performed by persons
More informationProven to be better. Development trends in industrial rolling bearings
Proven to be better Development trends in industrial rolling bearings Contents 1. General trends in power transmission and in machine construction and plant engineering Page 3 2. General trends in rolling
More information3M Locator Plate
M Locator Plate 44-94 Instructions for the assembly of M Socket Connectors,.100" x.100" and.100" x.200" 1.0 General M Manual and Pneumatic Assembly Presses and accessory assembly equipment are recommended
More informationTHE INNOVATOR OF OUR INDUSTRY. SuperSprings.... They Simply Are the World s Finest Die Springs
THE INNOVATOR OF OUR INDUSTRY SuperSprings... They Simply Are the World s Finest Die Springs The SuperSprings Story SuperSprings We take die springs very seriously... that s why we recently built the most
More informationATMOSPHERIC RELIEF VALVE
IOM-ARV-0814 ATMOSPHERIC RELIEF VALVE INSTALLATION, OPERATION AND MAINTENANCE MANUAL GRAHAM CORPORATION Corporate and Sales Headquarters: 20 Florence Avenue, Batavia, New York 14020 Tel.: 585-343-2216
More informationMAE 322 Machine Design Shafts -3. Dr. Hodge Jenkins Mercer University
MAE 322 Machine Design Shafts -3 Dr. Hodge Jenkins Mercer University Setscrews Setscrews resist axial and rotational motion They apply a compressive force to create friction The tip of the set screw may
More information