This function is used to create a flat binder, as illustrated in Figure 7.2.2. The Margin and Shift parameters are used to control the binder size and position relative to the part, respectively.

BINDER MARGIN

The value of the Margin is the distance between the boundary of the die part and the edge of the binder. The initial binder is calculated from the boundary of part. The user is allowed to change the parameter of the binder edge to expand the binder size.

BINDER SHIFT

The value of the Shift is the shortest vertical clearance between the lowest point of the die part along Z direction and the binder. The binder Shift directly affects the draw depth of a part. The following two options are used to define the orientation of a flat binder.

DEFINE BINDER ORIENTATION

The Define Binder Orientation function controls the U-V direction of the binder surface.

When the button is clicked, the part is displayed in the X-Y view.  The point of first contact is highlighted, and two orthogonal cross lines are created. The line with an arrowhead indicates U-Axis of the binder surface.  Click and hold left mouse button, following by moving the mouse to obtain a desirable orientation of the U-V axes, or enter values directly in the appropriate fields in the Binder Orientation dialogue box.

 

Figure 7.2.5  Two Control Lines

SELECT 3 NODE/POINT

This function enables the user to select three nodes/points to define the binder orientation. The first two nodes are used to define the U direction of the binder surface, while the third node completes definition of the flat binder surface.

The following steps are needed to create a binder:

1.       Enter the binder Margin and binder Shift.

2.       Define the proper orientation of the U-V direction.

3.       Click the Apply button at the lower right corner of the dialog box. eta/DYNAFORM generates the binder surface and stores it in a new part named C_BINDER. The part is automatically assigned as the binder tool.

4.       If a binder has already been created in the C_BINDER part, an eta/DYNAFORM Question dialog box as illustrated in Figure 7.2.6 is displayed.

Figure 7.2.6  eta/DYNAFORM Question dialog box

YES – Override previously created binder with the current definition.

NO – Keeps the previously created binder.

Note:   When creating a binder of any shape for symmetric parts and Double-Attached with symmetric information, Define Binder Orientation option is not enabled, which means the binder orientation cannot be redefined, as illustrated in Figure 7.2.7.

Figure 7.2.7  Define binder orientation not available for symmetric and double-attached parts