Stock Curve

The Turn, Face, Bore and Back Face cycles allow you to specify a curve that defines a custom stock boundary for roughing. This curve describes only one side of the stock (the Outer Diameter (OD) for the Turn cycle, the Inner Diameter (ID) for the Bore cycle, the front face for the Face cycle and the back face for the Back Face cycle).

For the Turn and Bore cycles, the start and end of the defined stock curve become the default Right Bound and Left Bound parameters. For the Face and Back Face cycles, they become the default ID Value and OD Value parameters. You may change any of the boundary entry values after specifying a stock curve; however, re-selecting a stock curve resets the entry boxes to the original endpoints of the curve. If you set the stock curve to "None", then you need to enter the three coordinates that describe the three boundaries of the cutting area. The fourth boundary is the designated path for the Work Step. The direction of the boundary path is not relevant. It is not required that you define a boundary path; you may use the original method of ID/OD and Left/Right boundary parameters to define the stock. Also note that the ID/OD parameters take input regardless of the setting in the Setup dialog box.

The example below show the roughing toolpath created by using the TURN cycle in combination with a stock curve. As mentioned before, the left and right boundaries are set when selecting the stock curve. They can later be modified by the corresponding setting in the Boundaries section of the Cycle Data dialog.

Stock Curve & Path Curve

Computed roughing Toolpath (TURN Cycle)