The Two-Line Binder function is used to create a binder with curvatures in both the U and V directions.  The dialog box is illustrated in Figure 7.2.10.

Figure 7.2.10  Two-line Binder dialog box

·         DEFINE BINDER ORIENTATION

The Define Binder Oreintation 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 with a white circle and the following message is printed in the message prompt window:

CLICK AND HOLD THE LEFT MOUSE BUTTON AT THE CROSS HAIR CENTER.
MOVE MOUSE TO ROTATE.  RELEASE MOUSE BUTTON TO COMPLETE

As illustrated in Figure 7.2.11, 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.

·           TRIM REFERENCE LINE

The shape of the binder is determined by the following factors: reference point, orientation of the U-V axes, length of the U-V axes, and the part geometry.   If some of the details on the part are not acceptable during creation of binder shape, the user can truncate the reference line to adjust the curvature of the binder. Figure 7.2.12, Figure 7.2.13 and Figure 7.2.14 illustrate binders created using different lengths of U-V axes.

 

Figure 7.2.11  Two control lines

Figure 7.2.12  Two-Line Binder (before trimming)

 

Figure 7.2.13  Trim Reference Line

Figure 7.2.14  Two-Line Binder from trimmed reference lines

Note:   For symmetric part and Double-Attached Half/Full, Two-Line Binder is not enabled, as illustrated in Figure 7.2.15.

Figure 7.2.15  Binder Type