The manual of V-ribbed belt (two-axis drive) design program

Transcription

1 The manual of V-ribbed belt (two-axis drive) design program 2009/3/31 Installation 1. Download and unzip the installer of the V-ribbed belt (two-axis drive) design program. Installation will be started by double-clicking the installer. Follow the instructions on the display to finish the setup. (See download page of our Homepage for detailed procedure.) 2. The normal installation directory and file name of the program are as the following. Directory C:\Program Files\MITSUBOSHIBELTING\Rib2AXES\ File name Rib2AXES_E.exe 3. If you want to uninstall the program, use the "Add/Remove Programs" utility in the Microsoft Windows Control Panel. Table of contents 1. Designing of V-ribbed belt 1.1 Input process Input of the use conditions Setting of service factor 1.2 Calculation results Without specified condition With specified condition 1.3 Printing 1.4 Save and load of the calculated data 2. Length calculation program 2.1 Composition of the layout Two-axis drive Three or more axes drive Usage of backside pulley Usage of the pulley with swing arm 2.2 Adjustment of the layout To rotate the swing arm pulley by clicking the drawing To rotate the swing arm pulley by assignment of belt length To move pulleys linearly by assignment of belt length To move pulleys freely 2.3 Spring force calculation of swing arm pulley 2.4 Enlarge of the drawing 2.5 Printing 2.6 Save and load of the calculated data

2 1. Designing of V-ribbed belt 1.1 Input process The following is an input screen of the V-ribbed belt design program Figure 1. The Input Screen of the V-ribbed Belt Design Program Input of the use conditions Following six items are required to input data for the calculation. 1Service factor You can directly type in service factor to the column. The service factor can auto-configure by clicking on the "See Table" button. (The usage of the service factor subroutine is detailed at section ) 23Transmission power There are two columns with different units. At column 2, the unit is "kw". At column 3, the unit is "PS". Inputting either of the columns, the other one is calculated automatically. 4Revolutions of the driver pulley 5Revolutions of the driven pulley Input both of the columns when you don't input Pulley diameter (column 7 and 8). Input either of the columns if you know both the driver and driven pulley diameter for column 7 and 8. 6Center distance Input the distance between shafts of driver pulley and driven pulley. The unit is "mm". After inputting all required columns, click on the "START" button. If you don't input anything in column 7 to 10, calculation results are displayed below "Standard pulley". If you fill in any columns from 7 to 10, results are displayed below "Optional condition". How to use Specified condition is explained in section

3 1.1.2 Setting of Service Factor Figure 2. The Input Screen to Set the Service Factor 1TYPES of DRIVEN MACHINES (Required) Select the machine type on which you use the V-ribbed belt. If your machine is not found in the table, select the machine from similar torque group. 2TYPES of DRIVER MOTOR (Required) Select the type of the driving unit based on the maximum power. 3SERVICE CONDITION (Required) Select the hours of operation per day. 4ENVIRONMENT FACTORS (Optional) Check the boxes of applied conditions that the V-ribbed belt is used. After selecting from 1 to 3 (optionally 4), the TOTAL SERVICE FACTOR is calculated automatically. Click on the "ADOPTION" button to reflect the calculation result to the main screen.

4 1.2 Calculation results Without specified condition Figure 3a. Calculation Results without OPTIONAL CONDITION Figure 3. Calculation Results without Specified Condition This is an example of the calculation results without specified condition. In this case, Specified condition and Pulley diameter is not assigned, so optimum driver pulley, driven pulley, belt name and number of ribs for the system will be given.

5 1.2.2 With specified condition Figure 3b. Calculation Results with OPTIONAL CONDITION Figure 4. Calculation Results with Specified Condition This is the example of the calculation results with specified conditions. In this case, Belt type, Number of Ribs, and Pulley diameter are assigned. You can assign J(PJ), PK(K), L(PL), and M(PM) as the Belt type. Also, you can assign from 3 to 20 as Number of Ribs. If you input Specified conditions, Driver or Driven Pulley diameter is required for the calculation. Warning message will appear if the pulley diameter is not filled in. Calculation results based on specified condition is displayed below "Optional condition".

6 1.3 Printing Select "File">"Print" from Menu Bar. If you assign belt type and/or number of ribs, the words [L (or J, PK, M) SPECIFIED] and/or [NUMBER of RIBS] will appear at [SPECIFIED ITEMS] row. Attention : The required number of ribs, which is displayed on the results window, will not be printed. 1.4 Save and load of the calculation data You can save the calculation data by selecting File menu from Menu Bar. Save Data is saved in original file form *.rbs extension. Old saved data will disappear. Save as Data is saved in original file form *.rbs extension. You can create a new saved file. CSV Save Data is saved in CSV file extension *.csv. Saved file can be opened by Microsoft Excel, etc.. Text save Data is saved in text file extension *.txt. Saved file can be opened by Memo Pad, Microsoft Word, etc.. You can load the saved data by selecting "File">"Open" from Menu Bar.

7 2. Length calculation program Click "Layout" of Menu Bar to launch length calculation program. The following is the input screen of the length calculation program. Figure 5. The Input Screen of the Length Calculation Program

8 2.1 Composition of the layout Two-axis drive Figure 6. Example of Two-axis Drive Layout In the case of two-axis drive layout, input data to D1 row (driver pulley) and D2 row (driven pulley). In O.D. column, input outside diameter of each pulley. Pitch diameter is calculated automatically. In X coord. and Y coord. columns, input coordinates of the center of pulleys. After you input all data, click on the "Calculate" button to display layout drawing and Belt Length. The driver pulley is shown in red, and the driven pulley is shown in yellow. Belt length is represented by two units, "mm" and "Inch".

9 2.1.2 Three or more axes drive Figure 7. Example of Three-axis Drive Layout This program is for the drive design with three or more axes drive layout. In such cases, first input the data of the driver pulley and then move clockwise (right-handed). In O.D. column, input outside diameter of each pulley. Pitch diameter is calculated automatically. In X coord. and Y coord. columns, input coordinates of the center of pulleys. After you input all data, click on the "Calculate" button to display layout drawing and Belt Length. The driver pulley is shown in red, and other pulleys are shown in yellow. Belt length is represented by two units, "mm" and "Inch". By using scroll bar at the bottom of the table, "ContAng", "Span L", and "CenterD" will be found. ContAng : Contact Angle Contact angle between the pulley and the belt. Span L : Span Length The belt length between the points where the belt and pulleys contact. CenterD : Center Distance The distance between the center of pulleys. It is possible to use the scroll bar to see these informations in most cases.

10 2.1.3 Usage of backside pulley Inputoutsidediameterof thepuleywithminussign. Figure 8. Example of Backside Pulley Usage This program is for the drive design with flat backside pulley. In such cases, input pulley outside diameter with minus sign in the front. In O.D. column, input outside diameter of each pulley. Pitch diameter is calculated automatically. In X coord. and Y coord. columns, input coordinates of the center of pulleys. After you input all data, click on the "Calculate" button to display layout drawing and Belt Length. The driver pulley is shown in red, and backside pulley is shown in blue, and another pulley is shown in yellow. Belt length is represented two units, "mm" and "Inch".

11 2.1.4 Usage of the pulley with swing arm Figure 9. Usage of the Pulley with Swing Arm This program is for the drive design using the pulley with swing arm. For the drive design using the pulley with swing arm, input data to "ARM ROTATE CONDITION" table. (D3 row is automatically filled in based on the data of ARM ROTATE CONDITION table.) In this example, outside diameter is filled in with minus sign in front, so it means the belt is tensioned from the beckside with a flat pulley. In this program, swing arm pulley is located on the right of the arm pivot, first. In this example, swing arm pulley doesn't work therefore belt length is not determined. The swing arm pulley should be moved to the appropriate position. The adjustment of the pully layout is mentioned in the next section.

12 2.2 Adjustment of the layout This section explains how to adjust the layout. In section 2.1.4, the position of swing arm pulley is not appropriate. The procedure to move the pulley position is as following To rotate the swing arm pulley by clicking the drawing Figure 10. To Rotate the Swing Arm Pulley by Clicking the Drawing The first method is to rotate the swing arm pulley by clicking the drawing. The procedure is following. 1. Click and check the box of "Apply Arm Rotation". 2. Click on the drawing where you want to rorate the swing arm pulley. 3. Click on the "Yes" button of the message box. The swing arm pulley is rotated to the position where you pointed and Rotated Angle and Belt Length are shown in the display. (Figure 11)

13 Figure 11. The Result of Rotating the Swing Arm Pulley by Clicking the Drawing

14 2.2.2 To rotate the swing arm pulley by assigning the belt length Figure 12. To Rotate the Swing Arm Pulley by Assigning the Belt Length The second method is to rotate the swing arm pulley by assigning the belt length. 1. Click and check the box of "Apply Arm Rotation". 2. Input the belt length to the "Target Length" box either in unit of "Inch" or "mm". 3. Click on the "Calculate" button. The swing arm pulley is rotated to the position where belt length becomes the assigned length. Rotated Angle and Belt Length will be shown in the display. (Figure 13)

15 Figure 13. The result of Rotating the Swing Arm Pulley by Assigning the Belt Length

16 2.2.3 To move pulleys linearly by assigning the belt length Figure 14. To Move Pulleys Linearly by Assigning the Belt Length The third method is to move pulleys linearly. However, swing arm pulley can't be moved linearly. Therefore, swing arm should be removed before conducting the linear movement. 1. Remove the check mark from the box of "Apply Arm Rotation" if the box is checked. 2. Click on the "Remove Arm" button to remove swing arm from D3 pulley. 3. Click and check the box of "Move Linear". 4. Input the belt length to the "Target Length" box either in unit of "Inch" or "mm". 5. Click on the "Move Linear" button to launch the new window to assign the pulley number and moving direction.

17 6 7 8 Figure 15. Assignment of the Pulley Number and Moving Direction 6. Choose the pulley number which you want to move. 7. Input the direction of the pulley which you want to move. The direction corresponds to the drawing of the left side. In this example, D3 pulley is moved to upward. The direction should be assigned to correspond the change of the belt length. In this example, belt length changes to stretch from 48 inches to 49 inches, so upward direction would be appropriate. If the direction is incorrect, an error message will appear at the next step. 8. Click on the "APPLY" button.

18 9 Figure 16. The Result of Moving Pulleys Linearly by Assigning the Belt Length 9. Click on the "Move!" button to move the pulley. By clicking the "Move!" button, Belt Length and the drawing change.

19 2.2.4 To move pulleys freely drag-and-drop Figure 17. To Move Pulleys Freely Another method is to move pulleys freely by drag-and-drop. To use this function, you have to remove the check marks from the box of "Apply Arm Rotation" and "Move Linear". After that, drag-and-drop the pulley which you want to move in the drawing.

20 Figure 18. The Result of Moving Pulleys Freely With this method, the Belt Length and the Arm length will change automatically. Therefore, this method is inappropriate if you want to assign the belt length and swing arm length.

21 2.3 Spring force calculation of swing arm pulley Spring Force 4 Arm Force by Belt Tension Figure 19. The Result of Spring Force Calculation When the swing arm pulley is used, spring force, which balances with belt tension, is calculated. 1. Click and check the box of "SPRING FORCE". 2. Input the distance between arm pivot and the point where the spring force is applied. 3. Input the belt tension. 4. Click on the point in the layout drawing where you want to set the spring direction. Calculation results such as spring force and force angle will be displayed below the input data. Spring Force By using the "90 degree Force" button (5), the angle between the arm and spring force becomes 90 degrees. Arm Figure 20. The Usage of 90 Degree Force Button

22 2.4 Enlarge the drawing Figure 21. Enlarge the Drawing By selecting "Image">"Enlarge" from Menu Bar, the drawing of the pulley layout is enlarged. Sometimes, the layout is not displayed in enlarged window because the calculation is not completed after pulleys are moved. To solve this, click on the "Calculate" button of the previous window to finish the calculation. (You might have to remove all the check marks from the boxes to finish the calculation.) Even in enlarged window, you can move pulleys by drag-and-drop.

23 2.5 Printing Select "File">"Print" from Menu Bar. 2.6 Save and load of the calculated data You can save the calculated data by selecting File menu from Menu Bar. Save as Data is saved in original file form extension *.tcl. You can create a new saved file. Save Data is saved in original file form extension *.tcl. Old saved data will disappear. Text save Data is saved in text file extension *.txt. Saved file can be opened by Memo Pad, Microsoft Word, etc.. dxf save Data is saved in DXF file extension *.dxf. Saved file can be opened by the application which can deal with CAD data. You can load the saved data by selecting "File">"Open" from Menu Bar.