A study on the application of tripod joints to transmit the driving torque of axial piston hydraulic motor
|
|
- John Pope
- 5 years ago
- Views:
Transcription
1 A study on the application of tripod joints to transmit the driving torque of axial piston hydraulic motor Youna-Boa HAM*, Sung-Dona KIM** *Senior Researcher, Department of Advanced Industrial Technology Korea Institute of Machinery & Materials 171 Jang-Dong, Yusung-Gu, Daejeon, Korea ( **Professor, Department of Mechanical Engineering Kumoh National University of Technology 188 Shinpyung-Dong, Kumi, Kyungbuk, Korea ( ABSTRACT An axial piston hydraulic motor with a tripod joints mechanism is introduced to improve compactness and starting torque in conventional types of motor. If the mechanism is applied in transmission torque to motor shaft, its friction torque loss would be drastically reduced and mechanical efficiency would be improved because the motion of tripod joints mechanism is relatively smaller than that of the conventional plunger motor. In particular, kinematics analysis for the mechanism is done as a preliminary study to investigate the feasibility of the mechanism in the axial piston motor. General formulas are derived from the displacement and velocity analysis of that mechanism, showing relationships between output shaft and shoe holder motion. A series of numerical calculations are carried out for a medium size motor with 160cc/rev using the formulas and their graphical plots are shown as well. KEY WORDS Axial piston hydraulic motor, Tripod joint, Swash plate, Shoe holder, Lateral force NOMENCLATURE Fluid Power. Fifth JFPS International Symposium (c) 2002 JFPS. ISBN
2 direction (j) rslip: Displacement of the slot in the longitudinal direction (i) vslip: Sliding velocity of B, a point of the spherical bearing in the negative i direction Vgap: Sliding velocity of B, a point of the spherical bearing in the negative j direction wp: Angular velocity of the shoe holder ws: Rotating angular velocity of the motor shaft wb: Angular velocity of the spherical bearing X, Y, Z: Orthogonal coordinate system fixed to the space x, r, ľ: Rotating orthogonal coordinate system 1. Introduction An axial piston hydraulic motor is widely used for driving large mechanical apparatuses. Generally, the axial shaft rotating synchronously. The motion of the connecting rod set has been already analyzed in the prior study.[4]-[6] Therefore, in this study, the motion of the tripod joints set has been intensively analyzed. This studying method is to analyze the motion of the tripod joints set theoretically in the first place to derive formulas, and then to conduct a numerical analysis by using the formulas acquired from the theoretical analysis, and further to conduct a quantitative analysis on the basis of the results of the numerical analysis. 2. Construction of Motor and Operation Principle Fig. 1 shows the construction of the swash plate type axial piston hydraulic motor to which the connecting rod set and the tripod joints set are applied. The thrust obtained by applying the hydraulic pressure to the piston is transmitted to the shoe through the connecting rod, and a rotating force takes place by the action of the sliding force between the shoe and the inclined shoe plate. This rotating force is transmitted to the motor shaft through the shoe holder and the tripod joints set. piston motor could be categorized into two types, a swash plate type and a bent axis type. Since the conventional swash plate type axial piston hydraulic motor has a simple construction and fewer components of the reciprocal movement portion in comparison with the bent axis type and its rotating mass is concentrated around the motor shaft, it has a merit to be installable in a place requiring a high-speed rotation and a limited area for installation. However, because the tilting angle of the swash plate is structurally limited, it has also a demerit that it is inferior to the bent axis type in the mechanical efficiency thereof. From a historical viewpoint, as a first model of swash plate type axial piston pump and motor, rod type piston has been attempted to be used much earlier than rodless or plunger type piston mostly used at present. But, owing to the fault of complicated construction, swash plate type piston pump and motor has not developed so much. First of all, after developed the universal joint mechanism by Harvey Williams and Reynolds Janney in 1903, it had been adopted in military applications and manufactured by Vickers in England and Mitsubishi Heavy Industry Co. in Japan.[1]-[3] In this study, the connecting rod piston set, which is adopted for the bent axis type, has been applied to the swash plate type in order to seek for a solution to the problems, such as the limited tilting angle of the swash plate, a strong lateral force of the piston, etc.. And, in order to apply such connecting rod mechanism, the tripod joints set has been applied as a synchronizing device to be required for having the shoe holder and the motor Fig. 1 Structure of axial piston hydraulic motor to which a tripod joints set and a connecting rod set are applied. In the conventional plunger type of the axial piston motor without the connecting rod, the rotating force gets to be transmitted by the action of the force between the plunger edge and the surface of the cylinder bore, and thus, a lateral force acts greatly on the plunger's side. As a result of such action, both the friction force and the wear of the plunger side get to be great. Meanwhile, for the motor shown in Fig. 1, the spherical joint is adopted, and thus, both the lateral force and the friction force of the piston are small, and the abrasion of the piston side takes place to a small extent. While the lubricant condition of the piston side gets to be better,
3 some additional friction gets to take place in the tripod joints set. However, since the lubricant condition of the tripod joints set is much better than that of the plunger side of the conventional motor, the consequent friction performance is superior. More particularly to say, as the lateral force of the piston of the motor on which this study is conducted is close to 0, the solid friction gets to be removed, and further, as the surface area of the piston side is very small, the viscous friction gets to be decreased. Also, it can be thought that since the tripod joints set is near the center of the motor shaft, the moment radius of the rotational inertia is small, and further that since the relative motion of this set is smalier than the sliding motion of the plunger in the conventional plunger type axial piston motor, the friction torque is small. around the motor shaft. While the piston shoe is in elliptic motion on the center of the motor shaft, it is in circular motion on the central axis of the shoe holder. 3. Analysis of Displacement of One Joint 3.1 Coordinate System Any motion of one point (B) in the outer ring of the square bearing can be expressed by 2 methods, that is to say, the one method for expressing it by using the rotational motion of the motor driving shaft and the other method for expressing it by using the rotational motion of the shoe holder. A coordinate system with which it is convenient to express each motion is applied to each motion, and then the two expressions of the motion are converted into one coordinate system for analysis thereof. The conversion formula between the two coordinate systems expressed in Fig. 3 is described as follows; (a) Front view of tripod joints set (b) Side view of tripod joints set (c) Three-dimensional view of tripod joint mechanism Fig. 2 Construction of tripod joints set As shown in the Fig.2, the front view of tripod joints is shown in Fig.2 (a) and also tripod joints assembled with the inclined shoe holder and three-dimensional modeling gure about combination of them are individually fi shown in Fig.2 (b) and (c). When 3 joints are in symmetry to the motor shaft as shown in the left figure of Fig. 2, the shoe holder gets to be in rotational motion on the axis inclined by 8 to the motor shaft with the central axis of the shoe holder intersecting over the motor shaft. In case the central axis of the shoe holder does not intersect over the motor shaft, the shoe holder gets to be in rotational motion, revolving Fig. 3 Coordinate system for rotational motion of driving shaft and of shoe holder 3.2 Analysis of Displacement Displacement of one point (B) in the square bearing could be expressed through the rotational motion of the
4 motor driving shaft as follows; (4) In Table 1, we show parameters and input value for analysis. Table 1 Parameters and input value for analysis The position of Point B could be expressed through the rotational motion of the shoe holder by setting Point OP of Fig. 3 as a base, as follows; (5) Wherein, Eq. (4) and (5) should be the same each other by components le, je and ke. (6) (7) In case the square bearing is installed respectively in 3 points of the motor shaft at intervals of 120 as shown in Fig. 2, the gap gets to be changed in a cycle of 120 as shown in Fig. 4. Fig. 5 shows the variation of rsjlp with the angular displacement of the motor shaft, Os. Fig. 6 shows a phase difference between 8S and 8P to 8c, the angular displacement of the motor shaft. (8) From Eq. (6) (9) Form Eq. (7) (10) From Eq. (8) (11) Fig. 4 Variation of the Gap between Point B and P In Eq. (9) and (10), in case the degree of inclination of the axis is so small to the extent of 8= 20, the difference between 8S and 8p, which are angular displacement, is so small that it may be ignored, and thus, it can be assumed that 8S should be equal to Op. On this assumption, Point P and B are the farthest at the point of 8S=8p=0, and as the motor shaft and the shoe holder move in rotation, they get to be nearer and nearer, and then the nearest at the point of Os=Op=90. Thereafter, they get to be farther and farther again. They are in this cyclic motion repetitively. When Eq. (11) is applied together with Eq. (10), the size and the degree of change of rgap, the gap between Point B and P can be known, which is shown in Fig. 4. Fig. 5 Variation of the sliding displacement of spherical bearing with the angular displacement of motor shaft (5=20 )
5 If we assume the angular velocity of motor shaft ws may be uniform, the relation between ws and the rotation velocity of the shoe holder wp can be displayed as shown in Fig. 7. Fig. 8 shows the variation of the angular velocity of shoe holder with the tilting angle of the shoe holder (ĉ). Fig. 9 shows the variation of the sliding velocity of Fig. 6 Variation of the phase difference (ľs-ľp) with the angular displacement of motor shaft Point B (vsllp) of the square bearing in the negative i direction with the angular displacement of the motor shaft (ľs). As shown in Fig. 6, in case the degree of inclination of the axis is so small to the extent of ĉ=20, the difference between ľs,and ľp, which are angular displacement, is so small that it may be ignored, and thus, it can be assumed that ľs, should be equal to ľp. 3.3 Analysis of Velocity Velocity of one point (B) in the square bearing could be expressed through the rotating motion of the motor driving shaft as follows; Eq. (12) shows the velocity of Point B based on Point OP in the Fig. 3 and intermediated the rotating motion of the shoe holder as follows; Fig. 7 Variation of the wp and ws with the angular displacement of motor shaft (ľs) Wherein, Eq. (12) and (13) should be the same each other by components of iľ, jľ and kľ. And if Eq. (16) is substituted by Eq. (10), it is equal to Eq. (17). Fig. 8 Effect of a tilting angle (ĉ) of swash plate on the variation of the wp
6 3) A sliding relative motion takes place between the spherical bearing and the shoe holder. It can be thought that such sliding motion is relatively much smaller than the piston sliding motion. That is because the tripod joints locate much closer than those pistons from the center of motor shaft. Therefore, it can be thought the friction loss is smaller in the case that the driving torque is transmitted with the tripod joints set than in the case that the driving torque is transmitted by the lateral force of the piston in the conventional plunger type. REFERENCE Fig. 9 Variation of the vslip with ľs Fig. 10 shows the variation of the vgap, the sliding velocity of Point B on the square bearing in the negative motor direction with ľs, the angular displacement i of the shaft. 1. Sadao Ishihara, Design and Basic of Axial Plunger type Hydraulic Pump and Motor, Oil Hydraulics, 1975, Vol.5, No.2 2. Nishimura, Axial Piston Pump, Hydraulics and Pneumatics, 1983, Vol.14, No.5, pp Kouoh Kita, About Hydraulics (Progress in Variable Pump/Motor), Hydraulics and Pneumatics, 1988, Vol. 20, No.2, pp Atsushi Yamaguchi, Performance of Spherical Bearings for Piston Pumps and Motors, Hydraulics and Pneumatics, 1970, Vol.1, No.1 5. Park, T. J. and Lee, C. O.," Hydrodynamic Lateral Force on a Tapered Piston Subjected to a Large Pressure Gradient", Proc. Of 3rd Int. Conf. on Fluid Power Transmission & Control, Int. Academic Pub., 1993, pp Kim, J. K., Jung, J. Y., Oh, S. H.," A Study on the Driving of rods in Hydraulic Bent-axis-type Axial Piston Pump, Part 1 The Theoretical Analysis of Driving Mechanism", Journal of KSTLE, 1998, Vol. 14, NO.4, pp Fig. 10 Variation of the vgap with ľs 4. Conclusion In this study, the hydraulic motor to which the connecting rod piston set and the tripod joints set are applied has been analyzed, and the main results of such analysis are summarized as follows; 1) The rotation angular displacement of the shoe holder shows a phase difference of }1.7 or so to the rotation angular displacement of the driving shaft. 2) The angular velocity of shoe holder deviates from that of motor shaft. The extent of the deviation increases as the tilting angle of swashplate increases. In case the tilting angle is 20 and the motor speed is 2000 rpm, the maximum deviation is about 6.25 % against the motor speed. The deviation } appears as a cyclic pattern, and shows 2 times cyclic motion for one revolution of the motor shaft.
Application of Simulation-X R based Simulation Technique to Notch Shape Optimization for a Variable Swash Plate Type Piston Pump
Application of Simulation-X R based Simulation Technique to Notch Shape Optimization for a Variable Swash Plate Type Piston Pump Jun Ho Jang 1, Won Jee Chung 1, Dong Sun Lee 1 and Young Hwan Yoon 2 1 School
More informationAnalytical Technology for Axial Piston Pumps and Motors
Analytical Technology for Axial Piston Pumps and Motors Technology Explanation Analytical Technology for Axial Piston Pumps and Motors SATO Naoto Abstract Axial piston pumps and motors are key products
More informationStudy on Pendulor Wave Power Converter for Coastal Operation
OTEC Vol. 22 (2017),47 54 Study on Pendulor Wave Power Converter for Coastal Operation of Sri Lanka Design of the Piston Pump for the HST (Hydro-Static Transmission) of the Pendulor 47 Study on Pendulor
More informationGearless Power Transmission-Offset Parallel Shaft Coupling
Gearless Power Transmission-Offset Parallel Shaft Coupling Mahantesh Tanodi 1, S. B. Yapalaparvi 2, Anand. C. Mattikalli 3, D. N. Inamdar 2, G. V. Chiniwalar 2 1 PG Scholar, Department of Mechanical Engineering,
More informationA Low Friction Thrust Bearing for Reciprocating Compressors
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering A Low Friction Thrust Bearing for Reciprocating Compressors Shuhei Nagata shuhei.nagata.wq@hitachi.com
More informationResearch on Lubricant Leakage in Spiral Groove Bearing
TECHNICAL REPORT Research on Lubricant Leakage in Spiral Groove Bearing T. OGIMOTO T. TAKAHASHI In recent years, bearings for spindle motors have been required for high-speed rotation with high accuracy
More informationDevelopment of Pushrim-Activated Power-Assisted Wheelchair
Development of Pushrim-Activated Power-Assisted Wheelchair Yoon Heo, Ki-Tae Nam, Eung-Pyo Hong, Mu-Sung Mun Korea Orthopedics & Rehabilitation Engineering Center 26, Gyeongin-ro 10beon-gil, Bupyeong-gu,
More informationApplication of ABAQUS to Analyzing Shrink Fitting Process of Semi Built-up Type Marine Engine Crankshaft
Application of ABAQUS to Analyzing Shrink Fitting Process of Semi Built-up Type Marine Engine Crankshaft Jae-Cheol Kim, Dong-Kwon Kim, Young-Duk Kim, and Dong-Young Kim System Technology Research Team,
More informationINTRODUCTION: Rotary pumps are positive displacement pumps. The rate of flow (discharge) of rotary pump remains constant irrespective of the
INTRODUCTION: Rotary pumps are positive displacement pumps. The rate of flow (discharge) of rotary pump remains constant irrespective of the pressure. That is, even at very high pressure, these pumps can
More informationUnit V HYDROSTATIC DRIVE AND ELECTRIC DRIVE
Unit V HYDROSTATIC DRIVE AND ELECTRIC DRIVE HYDROSTATIC DRIVE In this type of drives a hydrostatic pump and a motor is used. The engine drives the pump and it generates hydrostatic pressure on the fluid.
More informationA Study on the Efficiency of Tapered Roller Bearings
A Study on the Efficiency of Tapered Roller Bearings IN WOOK LEE*, DAE YONG LEE*, HEE CHEOL KIM**, KWANG HYUN KIM***, and CHUL KI SONG**** *R&D center, Schaffler Korea, Changwon, Gyeongnam,Korea ** Yongdong
More informationResearch on Optimization for the Piston Pin and the Piston Pin Boss
186 The Open Mechanical Engineering Journal, 2011, 5, 186-193 Research on Optimization for the Piston Pin and the Piston Pin Boss Yanxia Wang * and Hui Gao Open Access School of Traffic and Vehicle Engineering,
More informationA Simple Approach for Hybrid Transmissions Efficiency
A Simple Approach for Hybrid Transmissions Efficiency FRANCESCO BOTTIGLIONE Dipartimento di Meccanica, Matematica e Management Politecnico di Bari Viale Japigia 182, Bari ITALY f.bottiglione@poliba.it
More informationMARITIME AFTERNOON. Torben Ole Andersen. June 14, 2017 Aalborg University, Denmark
MARITIME AFTERNOON HYDRAULICS Torben Ole Andersen June 14, 2017 Aalborg University, Denmark Agenda Marine Propellers Digital Hydraulics in a Hydraulic Winch Secondary Control in of Multi -Chamber Cylinders
More informationLoad Analysis and Multi Body Dynamics Analysis of Connecting Rod in Single Cylinder 4 Stroke Engine
IJSRD - International Journal for Scientific Research & Development Vol. 3, Issue 08, 2015 ISSN (online): 2321-0613 Load Analysis and Multi Body Dynamics Analysis of Connecting Rod in Single Cylinder 4
More informationAnalysis of Torsional Vibration in Elliptical Gears
The The rd rd International Conference on on Design Engineering and Science, ICDES Pilsen, Czech Pilsen, Republic, Czech August Republic, September -, Analysis of Torsional Vibration in Elliptical Gears
More informationModeling and Vibration Analysis of a Drum type Washing Machine
Modeling and Vibration Analysis of a Drum type Washing Machine Takayuki KOIZUMI, Nobutaka TSUJIUCHI, Yutaka NISHIMURA Department of Engineering, Doshisha University, 1-3, Tataramiyakodani, Kyotanabe, Kyoto,
More informationResearch on Skid Control of Small Electric Vehicle (Effect of Velocity Prediction by Observer System)
Proc. Schl. Eng. Tokai Univ., Ser. E (17) 15-1 Proc. Schl. Eng. Tokai Univ., Ser. E (17) - Research on Skid Control of Small Electric Vehicle (Effect of Prediction by Observer System) by Sean RITHY *1
More informationA STUDY ON THE PROPELLER SHAFT OF CAR USING CARBON COMPOSITE FIBER FOR LIGHT WEIGHT
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 5, May 2018, pp. 603 611, Article ID: IJMET_09_05_066 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=5
More informationEstimation Method for Friction Torque of Air-oil Lubricated Angular Contact Ball Bearings
NTN TECHNICAL REVIEW No.82(214) [ Technical Paper ] Estimation Method for Friction Torque of Air-oil Lubricated Angular Contact Ball Bearings Hiroki FUJIWARA* Angular contact ball bearings for high-speed
More informationDesign, Development and Testing of Bent Axis Piston Pump
Design, Development and Testing of Bent Axis Piston Pump Vijay V. Doijad 1 Amol B. Rabade 2, A.S. Todkar 3 P.G.Student, T.K.I.E.T. Warananagar 1,2 Professor, Department of Mechanical Engineering, T.K.I.E.T.
More informationA Study on the Measurement of Contact Force of Pantograph on High Speed Train
ICCAS005 June -5, KINTEX, Gyeonggi-Do, Korea A Study on the Measurement of Contact Force of Pantograph on High Speed Train Sung-Il Seo*, Yong-Hyun Cho**, Jin-Yong Mok***, Choon-Soo Park*** and Ki-Hwan
More informationAerodynamically induced power loss in hard disk drives
Microsyst Technol (2005) 11: 741 746 DOI 10.1007/s00542-005-0575-8 TECHNICAL PAPER Sung-Oug Cho Æ Seung-Yop Lee Æ Yoon-Chul Rhim Aerodynamically induced power loss in hard disk drives Received: 30 June
More informationNEW CONCEPT OF A ROCKER ENGINE KINEMATIC ANALYSIS
Journal of KONES Powertrain and Transport, Vol. 19, No. 3 2012 NEW CONCEPT OF A ROCKER ENGINE KINEMATIC ANALYSIS Miros aw Szymkowiak Kochanowskiego Street 13, 64-100 Leszno, Poland e-mail: szymkowiak@op.pl
More informationDESIGN AND FUEL ECONOMY OF A SERIES HYDRAULIC HYBRID VEHICLE
OS1-1 Proceedings of the 7th JFPS International Symposium on Fluid Power, TOYAMA 2008 September 15-18, 2008 DESIGN AND FUEL ECONOMY OF A SERIES HYDRAULIC HYBRID VEHICLE Peter ACHTEN*, Georges VAEL*, Mohamed
More informationDesign Strategy of a Piezoelectric Valve for a Color Sorter
Journal of the Korean Physical Society, Vol. 57, No. 4, October 2010, pp. 913 917 Design Strategy of a Piezoelectric Valve for a Color Sorter So-Nam Yun, Young-Bog Ham and Jung-Ho Park Environment and
More informationR10 Set No: 1 ''' ' '' '' '' Code No: R31033
R10 Set No: 1 III B.Tech. I Semester Regular and Supplementary Examinations, December - 2013 DYNAMICS OF MACHINERY (Common to Mechanical Engineering and Automobile Engineering) Time: 3 Hours Max Marks:
More informationPlanetary Roller Type Traction Drive Unit for Printing Machine
TECHNICAL REPORT Planetary Roller Type Traction Drive Unit for Printing Machine A. KAWANO This paper describes the issues including the rotation unevenness, transmission torque and service life which should
More informationCLASSIFICATION OF ROLLING-ELEMENT BEARINGS
CLASSIFICATION OF ROLLING-ELEMENT BEARINGS Ball bearings can operate at higher speed in comparison to roller bearings because they have lower friction. In particular, the balls have less viscous resistance
More informationBearings. Rolling-contact Bearings
Bearings A bearing is a mechanical element that limits relative motion to only the desired motion and at the same time it reduces the frictional resistance to the desired motion. Depending on the design
More informationSmart Automated Vent Register Using an SMA Spring Actuated Rotary Ratchet
Smart Automated Vent Register Using an SMA Spring Actuated Rotary Ratchet Mary Molepske, Victor Braciszewski, James Butler, Gregory Caputo, Fan-Ning Cheng, WonHee Kim, Jonathan Luntz, Diann Brei ABSTRACT
More informationAN APPROACH TO ENERGY CONSERVATION FOR AIR MOTOR
P- Proceedings of the 7th JFPS International Symposium on Fluid Power, TOYAMA 8 September -8, 8 AN APPROACH TO ENERGY CONSERVATION FOR AIR MOTOR Eisuke SUMIDA*, Masaki GOTO* and Hiroshi MUTOH** *Department
More informationHydraulic Pumps Classification of Pumps
Fluidsys Training Centre, Bangalore offers an extensive range of skill-based and industry-relevant courses in the field of Pneumatics and Hydraulics. For more details, please visit the website: https://fluidsys.org
More informationENERGY RECOVERY SYSTEM FOR EXCAVATORS WITH MOVABLE COUNTERWEIGHT
Journal of KONES Powertrain and Transport, Vol. 2, No. 2 213 ENERGY RECOVERY SYSTEM FOR EXCAVATORS WITH MOVABLE COUNTERWEIGHT Artur Gawlik Cracow University of Technology Institute of Machine Design Jana
More informationA Study on the Starting Characteristics of a Reciprocating Compressor for a Household Refrigerator
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 1996 A Study on the Starting Characteristics of a Reciprocating Compressor for a Household
More information(12) Patent Application Publication (10) Pub. No.: US 2014/ A1
(19) United States US 2014O124322A1 (12) Patent Application Publication (10) Pub. No.: US 2014/0124322 A1 Cimatti (43) Pub. Date: May 8, 2014 (54) NORMALLY CLOSED AUTOMOTIVE (52) U.S. Cl. CLUTCH WITH HYDRAULC
More informationA New Device to Measure Instantaneous Swept Volume of Reciprocating Machines/Compressors
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2004 A New Device to Measure Instantaneous Swept Volume of Reciprocating Machines/Compressors
More informationAvailable online at ScienceDirect. Procedia CIRP 33 (2015 )
Available online at www.sciencedirect.com ScienceDirect Procedia CIRP 33 (2015 ) 581 586 9th CIRP Conference on Intelligent Computation in Manufacturing Engineering - CIRP ICME '14 Magnetic fluid seal
More informationLow-torque Deep-groove Ball Bearings for Transmissions
New Product Low-torque Deep-groove Ball Bearings for Transmissions Katsuaki SASAKI To achieve low fuel consumption in response to environmental concerns, we have focused on reducing the friction of tapered
More informationNEW STRATEGY FOR DESIGN AND FABRICATING OF A GRAIN SORTING SYSTEM USING HIGH-SPEED PIEZOELECTRIC VALVES
NEW STRATEGY FOR DESIGN AND FABRICATING OF A GRAIN SORTING SYSTEM USING HIGH-SPEED PIEZOELECTRIC VALVES So-Nam Yun*, Hwang-Hun Jeong**, Dong-Gun Kim**, Eun-A Jeong** and Hong-Hee Kim*** * Department of
More informationCRITICAL SPEED ANALYSIS FOR DUAL ROTOR SYSTEM USING FINITE ELEMENT METHOD
CRITICAL SPEED ANALYSIS FOR DUAL ROTOR SYSTEM USING FINITE ELEMENT METHOD Kai Sun, Zhao Wan, Huiying Song, Shaohui Wang AVIC Commercial Aircraft Engine Co. Ltd, 3998 South Lianhua Road, 201108 Shanghai,
More informationPrediction of Thermal Deflection at Spindle Nose-tool Holder Interface in HSM
Prediction of Thermal Deflection at Spindle Nose-tool Holder Interface in HSM V Prabhu Raja, J Kanchana, K Ramachandra, P Radhakrishnan PSG College of Technology, Coimbatore - 641004 Abstract Loss of machining
More informationClearance Loss Analysis in Linear Compressor with CFD Method
Clearance Loss Analysis in Linear Compressor with CFD Method Wenjie Zhou, Zhihua Gan, Xiaobin Zhang, Limin Qiu, Yinzhe Wu Cryogenics Laboratory, Zhejiang University Hangzhou, Zhejiang, China, 310027 ABSTRACT
More informationComparison of Air-Standard Atkinson, Diesel and Otto Cycles with Constant Specific Heats
Comparison of Air-Standard Atkinson, Diesel and Otto Cycles with Constant Specific Heats Sethi Upasna Vijay 1, Mansha Kumari 2 1 Assistant Professor, Mechanical Engineering Department, Vadodara Institute
More informationTechnical Report Con Rod Length, Stroke, Piston Pin Offset, Piston Motion and Dwell in the Lotus-Ford Twin Cam Engine. T. L. Duell.
Technical Report - 1 Con Rod Length, Stroke, Piston Pin Offset, Piston Motion and Dwell in the Lotus-Ford Twin Cam Engine by T. L. Duell May 24 Terry Duell consulting 19 Rylandes Drive, Gladstone Park
More informationAPPLICATION OF A NEW TYPE OF AERODYNAMIC TILTING PAD JOURNAL BEARING IN POWER GYROSCOPE
Colloquium DYNAMICS OF MACHINES 2012 Prague, February 7 8, 2011 CzechNC APPLICATION OF A NEW TYPE OF AERODYNAMIC TILTING PAD JOURNAL BEARING IN POWER GYROSCOPE Jiří Šimek Abstract: New type of aerodynamic
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 informationDevelopment of Feedforward Anti-Sway Control for Highly efficient and Safety Crane Operation
7 Development of Feedforward Anti-Sway Control for Highly efficient and Safety Crane Operation Noriaki Miyata* Tetsuji Ukita* Masaki Nishioka* Tadaaki Monzen* Takashi Toyohara* Container handling at harbor
More informationAn investigation on development of Precision actuator for small robot
An investigation on development of Precision actuator for small robot Joo Han Kim*, Se Hyun Rhyu, In Soung Jung, Jung Moo Seo Korea Electronics Technology Institute (KETI) * 203-103 B/D 192 Yakdae-Dong,
More informationMODULE- 5 : INTRODUCTION TO HYDROSTATIC UNITS (PUMPS AND MOTORS)
MODULE- 5 : INTRODUCTION TO HYDROSTATIC UNITS (PUMPS AND MOTORS) LECTURE- 18 : BASIC FEATURES OF SOME Hydraulic Pumps & Motors Introduction In this section we shall discuss the working principles and fundamental
More informationA Study on Noncircular Gears with Non-Uniform Teeth
A Study on Noncircular Gears with Non-Uniform Teeth Kazushi Kumagai* 1 and Tetsuya Oizumi* *1 Department of Infomation System, Sendai National College of Technology 4-16-1 Ayashi-Chuo, Aoba-ku, Sendai
More informationSYSTEM CONFIGURATION OF INTELLIGENT PARKING ASSISTANT SYSTEM
SYSTEM CONFIGURATION OF INTELLIGENT PARKING ASSISTANT SYSTEM Ho Gi Jung *, Chi Gun Choi, Dong Suk Kim, Pal Joo Yoon MANDO Corporation ZIP 446-901, 413-5, Gomae-Dong, Giheung-Gu, Yongin-Si, Kyonggi-Do,
More informationThe Performance Optimization of Rolling Piston Compressors Based on CFD Simulation
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2004 The Performance Optimization of Rolling Piston Compressors Based on CFD Simulation
More informationINTERCONNECTION POSSIBILITIES FOR THE WORKING VOLUMES OF THE ALTERNATING HYDRAULIC MOTORS
Scientific Bulletin of the Politehnica University of Timisoara Transactions on Mechanics Special issue The 6 th International Conference on Hydraulic Machinery and Hydrodynamics Timisoara, Romania, October
More informationEffect of different parameter of LST: an overview
Effect of different parameter of LST: an overview Patel Kalpeshkumar P 1 Lecturer in Mechanical Engineering 1 K D Polytechnic,Patan,India Abstract - Energy losses resulting from friction between contact
More informationDevelopment of Rattle Noise Analysis Technology for Column Type Electric Power Steering Systems
TECHNICAL REPORT Development of Rattle Noise Analysis Technology for Column Type Electric Power Steering Systems S. NISHIMURA S. ABE The backlash adjustment mechanism for reduction gears adopted in electric
More informationTHE INFLUENCE OF THE MICROGROOVES ON THE HYDRODYNAMIC PRESSURE DISTRIBUTION AND LOAD CARRYING CAPACITY OF THE CONICAL SLIDE BEARING
Journal of KONES Powertrain and Transport, Vol. 19, No. 3 2012 THE INFLUENCE OF THE MICROGROOVES ON THE HYDRODYNAMIC PRESSURE DISTRIBUTION AND LOAD CARRYING CAPACITY OF THE CONICAL SLIDE BEARING Adam Czaban
More informationAnalysis of Parametric Studies on the Impact of Piston Velocity Profile On the Performance of a Single Cylinder Diesel Engine
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684,p-ISSN: 2320-334X, Volume 12, Issue 2 Ver. II (Mar - Apr. 2015), PP 81-85 www.iosrjournals.org Analysis of Parametric Studies
More informationANALYSIS OF BLADES OF AXIAL FLOW FAN USING ANSYS. Mahajan Vandana N.,* Shekhawat Sanjay P.
Research Article ANALYSIS OF BLADES OF AXIAL FLOW FAN USING ANSYS. Mahajan Vandana N.,* Shekhawat Sanjay P. Address for Correspondence Department of Mechanical Engg. S.S.B.T s College of Engg. and Technology,
More informationCONTRIBUTION TO THE CINEMATIC AND DYNAMIC STUDIES OF HYDRAULIC RADIAL PISTON MOTORS.
Ing. MIRCEA-TRAIAN CHIMA CONTRIBUTION TO THE CINEMATIC AND DYNAMIC STUDIES OF HYDRAULIC RADIAL PISTON MOTORS. PhD Thesis Abstract Advisor, Prof. dr. ing. matem. Nicolae URSU-FISCHER D.H.C. Cluj-Napoca
More informationDevelopment of the Evaluation Technology of the Braking Test for High-speed Brake Performance Tester
Development of the Evaluation Technology of the Braking Test for High-speed Brake Performance Tester Min-Soo Kim, Jeong-Guk Kim, and Byeong-Choon Goo Metropolitan Railroad System Research Center, Radio-based
More informationMODIFICATION OF SLIDER CRANK MECHANISM AND STUDY OF THE CURVES ASSOCIATED WITH IT
MODIFICATION OF SLIDER CRANK MECHANISM AND STUDY OF THE CURVES ASSOCIATED WITH IT Samiron Neog 1, Deep Singh 2, Prajnyan Ballav Goswami 3 1,2,3 Student,B. Tech.,Mechanical, Dibrugarh University Institute
More informationMulti Body Dynamic Analysis of Slider Crank Mechanism to Study the effect of Cylinder Offset
Multi Body Dynamic Analysis of Slider Crank Mechanism to Study the effect of Cylinder Offset Vikas Kumar Agarwal Deputy Manager Mahindra Two Wheelers Ltd. MIDC Chinchwad Pune 411019 India Abbreviations:
More informationTheory of Machines. CH-1: Fundamentals and type of Mechanisms
CH-1: Fundamentals and type of Mechanisms 1. Define kinematic link and kinematic chain. 2. Enlist the types of constrained motion. Draw a label sketch of any one. 3. Define (1) Mechanism (2) Inversion
More informationDHANALAKSHMI COLLEGE OF ENGINEERING
DHANALAKSHMI COLLEGE OF ENGINEERING (Dr.VPR Nagar, Manimangalam, Tambaram) Chennai - 601 301 DEPARTMENT OF MECHANICAL ENGINEERING III YEAR MECHANICAL - VI SEMESTER ME 6601 DESIGN OF TRANSMISSION SYSTEMS
More information2. Motion relationships and torques
2. Motion relationships and torques 2.1 Rotation angle of a single joint as a function of defl ection angle ß 1 Input rotation angle 2 Output rotation angle If a single joint is deflected by angle ß and
More informationDynamic Simulation of the Impact Mechanism of Hydraulic Rock Drill Based on AMESim Yin Zhong-jun 1,a, Hu Yi-xin 1,b
Advanced Materials Research Online: 2012-01-24 ISSN: 1662-8985, Vols. 452-453, pp 1296-1300 doi:10.4028/www.scientific.net/amr.452-453.1296 2012 Trans Tech Publications, Switzerland Dynamic Simulation
More informationImprovement of Vehicle Dynamics by Right-and-Left Torque Vectoring System in Various Drivetrains x
Improvement of Vehicle Dynamics by Right-and-Left Torque Vectoring System in Various Drivetrains x Kaoru SAWASE* Yuichi USHIRODA* Abstract This paper describes the verification by calculation of vehicle
More information719. Diagnostic research of rotor systems with variable inertia moment
719. Diagnostic research of rotor systems with variable inertia moment Valentinas Kartašovas 1, Vytautas Barzdaitis 2, Pranas Mažeika 3, Marius Vasylius 4 1, 2 Kaunas University of Technology, Mickevičiaus
More informationINNOVATIONS IN PUMP DESIGN-WHAT ARE FUTURE DIRECTIONS?
OS1-3 Proceedings of the 7th JFPS International Symposium on Fluid Power, TOYAMA 2008 September 15-18, 2008 INNOVATIONS IN PUMP DESIGN-WHAT ARE FUTURE DIRECTIONS? Monika IVANTYSYNOVA Department of Agricultural
More informationMARINE FOUR-STROKE DIESEL ENGINE CRANKSHAFT MAIN BEARING OIL FILM LUBRICATION CHARACTERISTIC ANALYSIS
POLISH MARITIME RESEARCH Special Issue 2018 S2 (98) 2018 Vol. 25; pp. 30-34 10.2478/pomr-2018-0070 MARINE FOUR-STROKE DIESEL ENGINE CRANKSHAFT MAIN BEARING OIL FILM LUBRICATION CHARACTERISTIC ANALYSIS
More informationAnalysis of Switch Gear and Validation
S. Krishna Chaitanya & M. Vimal Teja Dept. of Mechanical Engineering, Nimra College of Engineering & Technology, Ibrahimpatnam, Vijayawada E-mail: krishchaitu@gmail.com Abstract - In this paper, the main
More informationA Novel Automotive Two-Stage A/C Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2000 A Novel Automotive Two-Stage A/C Compressor Y. Huang S. Harte L. Sud V. K. Khetarpal
More informationEffect of Lubricating Oil Behavior on Friction Torque of Tapered Roller Bearings
TECHNICAL PAPER Effect of Lubricating Oil Behavior on Friction Torque of Tapered Roller Bearings H. CHIBA H. MATSUYAMA K. TODA Low-friction tapered roller bearings were developed to improve the fuel efficiency
More informationINDUCTION motors are widely used in various industries
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 44, NO. 6, DECEMBER 1997 809 Minimum-Time Minimum-Loss Speed Control of Induction Motors Under Field-Oriented Control Jae Ho Chang and Byung Kook Kim,
More informationHydraulic Pump and Track Motor for Hydrostatic Transmission
KYB TECHNICAL REVIEW No. 55 OCT. 2017 Product Introduction Hydraulic Pump and Track Motor for Hydrostatic Transmission INADA Takanori, MIURA Takuya, MATSUZAKA Keita 1 Introduction 2 Hydraulic Pumps There
More informationForced vibration frequency response for a permanent magnetic planetary gear
Forced vibration frequency response for a permanent magnetic planetary gear Xuejun Zhu 1, Xiuhong Hao 2, Minggui Qu 3 1 Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System, Yanshan
More informationDYNAMICS LABORATORY. AIM: To apply the knowledge gained in kinematics and dynamics of machines to real system.
DYNAMICS LABORATORY AIM: To apply the knowledge gained in kinematics and dynamics of machines to real system. OBJECTIVES: To supplement the principles learnt in kinematics and Dynamics of Machinery. To
More informationSilencers. Transmission and Insertion Loss
Silencers Practical silencers are complex devices, which operate reducing pressure oscillations before they reach the atmosphere, producing the minimum possible loss of engine performance. However they
More informationStudy on Flow Fields in Variable Area Nozzles for Radial Turbines
Vol. 4 No. 2 August 27 Study on Fields in Variable Area Nozzles for Radial Turbines TAMAKI Hideaki : Doctor of Engineering, P. E. Jp, Manager, Turbo Machinery Department, Product Development Center, Corporate
More informationMOTOR VEHICLE HANDLING AND STABILITY PREDICTION
MOTOR VEHICLE HANDLING AND STABILITY PREDICTION Stan A. Lukowski ACKNOWLEDGEMENT This report was prepared in fulfillment of the Scholarly Activity Improvement Fund for the 2007-2008 academic year funded
More informationA CAD Design of a New Planetary Gear Transmission
A CAD Design of a New Planetary Gear Transmission KONSTANTIN IVANOV AIGUL ALGAZIEVA ASSEL MUKASHEVA GANI BALBAYEV Abstract This paper presents the design and characteriation of a new planetary transmission
More informationDEVELOPMENT OF AUTOMATIC ROAD MARKING REMOVING EQUIPMENT USING HIGH PRESSURE WATER-JET
DEVELOPMENT OF AUTOMATIC ROAD MARKING REMOVING EQUIPMENT USING HIGH PRESSURE WATER-JET Kyung-Min Park*, Young-Bog Ham*, Soon-Wook Kwon**, Kyoon-Tai Kim**, Jae-Goo Han**, Jeoung-Tae Kim*** * Advanced Industrial
More informationCooling Enhancement of Electric Motors
Cooling Enhancement of Electric Motors Authors : Yasser G. Dessouky* and Barry W. Williams** Dept. of Computing & Electrical Engineering Heriot-Watt University Riccarton, Edinburgh EH14 4AS, U.K. Fax :
More informationProposal of an Electromagnetic Actuator for Prosthetic Knee Joints
APSAEM1 Journal of the Japan Society of Applied Electromagnetics and Mechanics Vol.1, No.3 (13) Regular Paper Proposal of an Electromagnetic Actuator for Prosthetic Knee Joints Noboru NIGUCHI *1, Katsuhiro
More informationDevelopment of Integrated Vehicle Dynamics Control System S-AWC
Development of Integrated Vehicle Dynamics Control System S-AWC Takami MIURA* Yuichi USHIRODA* Kaoru SAWASE* Naoki TAKAHASHI* Kazufumi HAYASHIKAWA** Abstract The Super All Wheel Control (S-AWC) for LANCER
More informationThe Ball Mill Driving Device Fault and the Main Bearing Lubrication Analysis
TELKOMIKA, Vol. 11, o. 4, April 013, pp. 073~078 ISS: 30-4046 073 The Ball Mill Driving Device Fault and the Main Bearing Lubrication Analysis Tong Junfeng* 1,Hou Honghai,Zhao Hongxia 1 Electric Department,
More informationTheoretical and Experimental Evaluation of the Friction Torque in Compressors with Straddle Bearings
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 1998 Theoretical and Experimental Evaluation of the Friction Torque in Compressors with
More informationSTUDY AND ANALYSIS OF CONNECTING ROD PARAMETERS USING ANSYS
International Journal of Mechanical Engineering and Technology (IJMET) Volume 7, Issue 4, July Aug 2016, pp.212 220, Article ID: IJMET_07_04_022 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=7&itype=4
More informationDevelopment of an End-Pivot Type Mechanical Lash Adjuster
NTN TECHNICAL REVIEW No.75 27 Technical Paper Development of an End-Pivot Type Mechanical Lash Adjuster Eiji MAENO Hiroshi BUNKO Katsuhisa YAMAGUCHI NTN has developed a Mechanical Lash Adjuster (MLA) that
More informationResearch in hydraulic brake components and operational factors influencing the hysteresis losses
Research in hydraulic brake components and operational factors influencing the hysteresis losses Shreyash Balapure, Shashank James, Prof.Abhijit Getem ¹Student, B.E. Mechanical, GHRCE Nagpur, India, ¹Student,
More informationKinematic Analysis of Roll Motion for a Strut/SLA Suspension System Yung Chang Chen, Po Yi Tsai, I An Lai
Kinematic Analysis of Roll Motion for a Strut/SLA Suspension System Yung Chang Chen, Po Yi Tsai, I An Lai Abstract The roll center is one of the key parameters for designing a suspension. Several driving
More informationDischarge Characteristics of an Oil Feeder Pump Using Nozzle Type Fluidic Diodes for a Horizontal Compressor Depending onthe Driving Speed
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 1988 Discharge Characteristics of an Oil Feeder Pump Using Nozzle Type Fluidic Diodes for
More informationVibration Measurement and Noise Control in Planetary Gear Train
Vibration Measurement and Noise Control in Planetary Gear Train A.R.Mokate 1, R.R.Navthar 2 P.G. Student, Department of Mechanical Engineering, PDVVP COE, A. Nagar, Maharashtra, India 1 Assistance Professor,
More informationPNEUMATIC HIGH SPEED SPINDLE WITH AIR BEARINGS
PNEUMATIC HIGH SPEED SPINDLE WITH AIR BEARINGS Terenziano RAPARELLI, Federico COLOMBO and Rodrigo VILLAVICENCIO Department of Mechanics, Politecnico di Torino Corso Duca degli Abruzzi 24, Torino, 10129
More informationCh# 11. Rolling Contact Bearings 28/06/1438. Rolling Contact Bearings. Bearing specialist consider matters such as
Ch# 11 Rolling Contact Bearings The terms rolling-contact bearings, antifriction bearings, and rolling bearings are all used to describe the class of bearing in which the main load is transferred through
More informationDEVELOPMENT AND EVALUATION OF HYDRAULIC SIMULATION MODEL FOR WHEEL LOADER
Proceedings of the International Conference on Mechanical Engineering 2009 (ICME2009) 26-28 December 2009, Dhaka, Bangladesh ICME09- DEVELOPMENT AND EVALUATION OF HYDRAULIC SIMULATION MODEL FOR WHEEL LOADER
More informationSimulating Rotary Draw Bending and Tube Hydroforming
Abstract: Simulating Rotary Draw Bending and Tube Hydroforming Dilip K Mahanty, Narendran M. Balan Engineering Services Group, Tata Consultancy Services Tube hydroforming is currently an active area of
More informationExtremely High Load Capacity Tapered Roller Bearings
New Product Extremely High Load Capacity Tapered Roller Bearings Takashi UENO Tomoki MATSUSHITA Standard tapered roller bearing Extreme high load capacity bearing NTN developed a tapered roller bearing
More informationBraking Performance Improvement Method for V2V Communication-Based Autonomous Emergency Braking at Intersections
, pp.20-25 http://dx.doi.org/10.14257/astl.2015.86.05 Braking Performance Improvement Method for V2V Communication-Based Autonomous Emergency Braking at Intersections Sangduck Jeon 1, Gyoungeun Kim 1,
More information