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Countersinking the Back Side of Holes

Siemens Experimenter Siemens Experimenter
Siemens Experimenter

Back Countersinking



Back Countersinking is a new hole making operation subtype that allows you to machine modeled and non-modeled chamfers on the back side of holes.




Created with NX CAM 10.0.3



Each chamfer is machined using a single linear motion. This operation requires a supported back countersinking tool.




(view in My Videos)


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Save the attached part file locally and follow the instructions in the .pdf document.


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About the Author

Holder.jpg Bill Storrs is in the CAM Product Management Group at Siemens PLM software, Cypress California. His main focus is on CAM usability and learning support. He currently leads the CAM Learning Initiative Team whose mission is to provide users with a comprehensive collection of reference and training materials. He has an M.A. in Corporate Training and Development and has been in the industry for over 20 years.


Valued Contributor
Valued Contributor
PLM World Member Legend PLM World Member Legend
PLM World Member Legend

Most back chamfering we do is by milling with a double angled mill and mill a circulair contour. The NX back chamfering operation requires multiple tools for different size holes. With an small angled T-cutter we can make a lot of different sized holes


How post output for this cycle/op would look like?


Shifting the tool (direction: X-axis, Y-axis or combi of X&Y movement) from hole center depends on where the tool point is.  Normally in the machine parameter, you can set spindle orientation angle X positive being angle 0 in most case. Depending on this, the control's finish boring cycle will orient the tool, shift the tool from center an d in the direction based on orientation angle and retract.


How this been addressed in this new functionality?