In Velocities interface, the user can add or delete velocities, define and edit the initial velocities of scrap, set velocity random, etc. The definition of vertical trim velocity or cam trim velocity can both be completed in this interface. The detailed interface is illustrated in Figure 11.2.10.

Figure 11.2.10  Velocities interface

VELOCITIES LIST

All the currently defined velocity names are listed on the left side of the Velocities dialog box. Among all these velocity names, there is a pressed button which indicates the current velocity. The user may click this button to change the current velocity setting.

Note: The newly created velocity label is red, which indicates the velocity definition is not completed. In scrap shedding simulation setup, the user must define each necessary parameter completely. Otherwise, the label remains red to prompt the user to finish the setup.

ADD VELOCITY

This function allows the user to define a new velocity. The user can click the ADD button to switch the interface to Velocities interface, as illustrated in Figure 11.2.11.

Figure 11.2.11  Add velocity

The added Velocities interface and the current Velocities interface are the same. Refer to the current velocity definition for a detailed description.

DELETE VELOCITY

This function allows the user to delete the current velocity. The user can select one velocity from the velocity list as the current velocity. Then click the DELETE button to delete. The program will pop up a prompt dialog box, as illustrated in Figure 11.2.12.

Figure 11.2.12  Delete velocity prompt dialog box

Click OK to delete the current velocity. Click Cancel to cancel the current delete operation. There should be at least one velocity in the velocity list. The user cannot delete all the velocities in the list. If there is only one velocity in the list, the DELETE button is grey and not highlighted.

GENERAL

This function allows the user to define a name for the current velocity. The default velocity names are Vel1, Vel2, Vel3 and etc. Usually, we suggest the user to define a meaningful name for the current velocity, such as vertical or cam, which is more convenient for the user to understand, set and check errors, as illustrated in Figure 11.2.13.

Figure 11.2.13  Velocity name

TIME RELATED LINEAR

This function allows the user to define the time related linear velocity for the edge nodes of scrap contacting the edge of trim tool. Toggle on this option to highlight the button. The Linear Velocity dialog box, as illustrated in Figure 11.2.14 will pop up after clicking.

Figure 11.2.14  Linear velocity list

Click the Add button to define linear velocity. The dialog box is illustrated in Figure 11.2.15. Once the definition is completed, the node number with define velocity and the velocity values along X, Y and Z directions of this node will be displayed in the list. Click the Delete button to pop up Select Node dialog box for the user to delete the defined velocity for the node.

Figure 11.2.15  Time Related Linear Velocity dialog box

SELECT SCRAP: Select scrap part as the object to add velocity.

START NODE: This button is highlighted after the scrap is added. This function allows the user to select the start node of the scrap edge point.

END NODE: This button is highlighted after the scrap is added and the start node is selected. This function allows the user to select the end node of the scrap edge point. Once the selection is completed, the boundary line between start node and end node is highlighted in the display window.

REVERSE: This button is highlighted after the scrap is added and the selection of start node and end node. This function allows the user to reverse the operation of boundary line between nodes until it is confirmed.

NODES NUM:Show the number of nodes on the boundary line.

V0: Minimum velocity value added.

Vn: Maximum velocity value added.

ASSIGN: Allow the user to define boundary line for the selected scrap and velocity, and confirm the operation for the interpolation parameter.

CLEAR: Clear the added velocities.

VELOCITY

This function allows the user to define nodes for the current velocity, and define velocity parameters for the selected nodes, as illustrated in Figure 11.2.16.

Figure 11.2.16  Define velocity

The user can add multiple nodes to the current velocity. Click the EDIT button behind Nodes Number to pop up the Velocity Node dialog box illustrated in Figure 11.2.17.

Figure 11.2.17  Velocity node dialog box

SELECT: Add nodes with velocity to be defined. Click this button to pop up the SELECT NODES dialog box.

DELETE: Delete nodes in the list. The user can select nodes to be deleted in the screen window or node list and click the DELETE button.

OK: Confirm the selected or deleted nodes. Click this button to confirm the operation and exit the Define Node dialog box.

CANCEL: Cancel all the operations. Click this button to cancel operations and exit the Define Node dialog box.

If each direction value for the current velocity is confirmed, the user can directly enter the velocity values along X, Y and Z directions. Otherwise, if there is only the press motion curve, the user can click the EDIT button in the Velocity column to pop up the Velocity dialog box, illustrated in Figure 11.2.18.

Figure 11.2.18  Velocity dialog box

TRIM ANGLE

This function allows the user to define the velocity for cam trim. Once the Cam Trim option is toggled on, the input field for trim angle will be highlighted for the user to input angle value. The default value for Angle1 (α) and Angle2 (β) is 0. The default value for Angle3 (γ) is 25 degrees. The user can define according to the cam angle of the actual tooling.

MOTION CURVE

This function allows the user to read in and view the motion curve and set parameters.

IMPORT: Import motion curve of the press. Click this button to display the Open dialog box. The format of motion curve is *txt.

VIEW: View motion curve. Click this button to display the Load Curve dialog box. The user can only view motion curve without editing.

SPM (Stroke per minute): Stroke per minute. The default is 13. The user is allowed to modify according to practical requirements.

HEIGHT: The trim height of press. The user can define different height corresponding to different press velocity.

APPLY: Confirm the parameter setup. After import of motion curve and setup of SPM and HEIGHT, click this button to confirm the setup. The system will automatically calculate the velocity values along X, Y, and Z directions and display them in the velocity column.

VELOCITY

This function can only display the velocity value calculated by the program after the completion of motion curve definition, and it is not highlighted. If the velocity value is changed, the user needs to return to the Velocity dialog box and modify the parameters for calculation.

OK: Confirm velocity value. If the displayed velocity value is OK, the user can click this button to exit the dialog box.

CANCEL: The user is allowed to cancel the operation and exit the dialog box.

VELOCITY RANDOM

This function allows the user to set a percentage to offset the current velocity value. After definition of the current velocity, if the user is not sure about this velocity value, he/she can set a percentage to offset the current value.

Note: Set a percentage and submit for calculation. The program will automatically write three DYN files. One file has the same name as the current DF file; another file has a suffix _1 with the current DF file name, which means to reduce a certain percentage of the current velocity value; the last file has a suffix _2 with the current DF file name, which means to increase a certain percentage of the current velocity value.