In the practical nesting process, besides the above mentioned nesting methods, there are five other methods added in eta/DYNAFORM: Rectangle Nesting, Parallel Nesting, Isosceles Trapezoid Nesting, Trapezoid Nesting, and Arc Nesting.

Rectangle Nesting enables the user to generate the nesting result by embedding the blank in a rectangle. Refer to One-up Nesting and Two-up Nesting for a detailed description about parameter setup and operations. The options of manual are different from the ones of the above mentioned nesting methods, as illustrated in Figure 6.6.27.

Figure 6.6.27  Rectangle Manual dialog box

Since the cut-off profile is used to fit the blank, the master and slave blanks are not considered here. In the cut-off profile nesting, the Select Blank option is disabled and only the rotation buttons are enabled for the user to adjust the blank position.

After the user estimates the part outline (MSTEP), selects the rectangle nesting type, and performs the nesting calculation on the outline, the result page is illustrated in Figure 6.6.28. The Calculate Addendum button is available now.

Figure 6.6.28  Rectangle nesting result page

Click Manual button to scale Pitch, and the screen window is illustrated in Figure 6.6.29. The black line in the figure indicates the 2D outline after the pitch is scaled. Click OK button to accept the result and exit the Manual dialog box. The Calculate 3D Trim Line button is enabled, as illustrated in Figure 6.6.30.

Figure 6.6.29  Adjustment result

Figure 6.6.30  The result page after pitch scaling

Calculate 3D Trim Line

This button is only highlighted when the user uses MSTEP and selects Draw Nesting Type for pitch scaling. Select one result of the nesting calculation, and click Calculate 3D Trim Line button. The program will automatically project the adjusted 2D line onto the 3D product part. The user can view the 3D projection line on the part after exiting the Nesting dialog box.

Calculate Addendum

This button is only activated when the user selects Draw Nesting Type. Click Calculate Addendum button to display the dialog box illustrated in Figure 6.6.31.

Compensating Rate

Compensating rate is used to calculate a coefficient of addendum, and the default is 0.8. The user is allowed to modify the value, or edit the default in Default Config.

Addendum

The program can automatically calculate an appropriate addendum according to the empirical formula by empirical formula according to the current nesting result (Pitch and Width) and compensating rate. The user is not allowed to modify the addendum value.

Click Apply button to obtain an appropriate Addendum value. Click Exit button to exit this dialog box. The program will automatically put the calculated addendum on the Setup page for the user to redo the nesting calculation according to this addendum.

Figure 6.6.31  Calculate addendum dialog box

Calculate Blank Outline

This button is only activated when the user selects the second row in Draw Nesting Type. Clicking Calculate Blank Outline button, the program will automatically generate blank outline according to the currently selected Draw Nesting Type, including rectangle, parallelogram, trapezoid, isosceles-trapezoid, and arc outline. The calculated outline will be automatically named BLKLINOO part. The user can view it after exiting the nesting dialog box.