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Face Milling Improvements

Face Milling Improvements

Three improvements I would like to see in the Face Milling CAM operation.

 

1: Allow selection of a orientation direction (angular or from a feature), or at least a selection to orient in the X or Y axis.

Occasionally I want to face mill in the Y axis instead of the default X axis, I had this feature in another CAM system.

 

2: When Climb milling is selected the tool path should not rapid back to the "start" side between passes. Rather the face mill should remain on whichever side it finishes a pass then rapid to the "back" side to feed across to the original start side. For example, in Climb milling with the passes in the X axis, if the mill begins in the X+Y- corner it should feed to the X-Y- corner, rapid to the X-Y+ corner then feed to the X+Y+ corner. This would preserve Climb milling without having to rapid back to the X+ side for every pass (as Fusion currently does).

 

The issue with selecting climb cutting is that when the face mill makes its final pass it is almost guaranteed to roll over a nasty burr.

 

3: Another option for reducing rapid times and preserving climb/conventional would be to offer a spiral tool path option. This tool path keeps the face mill continuously in the cut and just spirals from the outside to the inside of the part face. This could be as simple as a rectangular box pattern or as fancy as a morphed strategy.

4 Comments
HughesTooling
Consultant

You have an option for Pass Direction on the passes tab, if you want to align to the Y axis just set it to 90°.

 

You can get a spiral clear using a 2d Adaptive cut but the pattern looks a bit odd.

 

Your second idea could be useful, not sure how it would work with odd shapes though.

 

Mark

cj.abraham
Alumni

@Jon_Bancroft

 

I'll address each point as you presented them.

 

1: If you turn on tool orientation and keep the same Z orientation, the X direction will determine the 0 degree direction of the toolpath. Simply align X with your feature and passes will be created along the feature.

 

2: Already implemented. Turn on "From Other Side" on the passes tab in the facing toolpath. This feature is exactly what you are describing.

 

3: A 3D apative strategy with heights set from stock top to model top will provide a constant engagement facing strategy. However, we have been exploring options to support a box-spiral type facing toolpath.

HughesTooling
Consultant

@cj.abraham I don't think item 2 is implemented, what's asked for is when climb milling after the first past don't lift and return to the start side but rapid to the back of the job and cut back to the start side. Red line below. I have a couple of 2 axis CNCs where this would be very helpful.

tool6.png

HughesTooling
Consultant

Also a 2d adaptive works for a spiral but the cut time is longer than the standard face op!

tool6.png

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