NX Cutting a Counterbore on the Back Side of a Workpiece using a T-cutter

A hole has been drilled from one side of a workpiece using numerous Holemaking operations. The one missing feature in the hole is a counterbore that would normally be cut by turning the block over. Can NX CAM cut this using a T-cutter by extending the tool through the block? A helical cut pattern in the upward direction would be the preferred tool path. If possible this path would save a workpiece setup by not having to turn the block over. Notice the desired tool path in the cutaway section view below.

Solution

There was a new operation type added in NX1899 that can be used to mill this type of feature. This new operation is titled Generic Feature Operation and can be found on the Holemaking menu. Like other Holemaking operations it has the ability to read hole parameter data from the part model and also to cut all holes in a geometry group in a single operation. What is unique about this operation is that it adds the ability to customize how the tool moves. The motion is added by creating sub operations. Notice the different sub operation types in the picture below.


In the sub operation the value for the NC Word output can be read from the hole geometry by switching to the Function option. A list of the available hole variables can be referenced by pressing the Expressions icon. These options can be seen in the picture below.

Hardware/Software Configuration

Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: CAM
Version: V1903
Function: HOLE_BOSS_MILL

Ref: 002-8017167