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I feel your frustration. The problem is a plot issue and more importantly the posted code. Your machine moves 45 deg. I don't know if you can change parameters to have the machine rapid different. The sure way is to have the post set to fast feed (ex G01 F400ipm) for rapid motion. Not what you want to hear. I think todays machines move axis at different feeds while in rapid to create a straight line as opposed to old time dog leg fashion.
I've programmed VTL's way back in the day. I would just program the part like a conventional cnc horizontal lathe, in the upper quad, like normal. In actuality the control flips/mirrors the normal cnc lathe program over to the operators side of the part on the VTL. It won't change the std G03/G02 direction. This was way my machine was set up. So I would have to imagine the tool running on the other side of the vertical centerline to do any at the machine edits. It was a bit confusing.
I've had slight unexpected drifting of rotary axis in the past. No with your exact toolpath. I would resolve it by locking in the angle with my limits. try the axis lock in the toolpath. You have to turn on (check) "limits" in tool axis control in order to set limits. I would try that first. Enter 20 and 20 or what ever the value is. You don't have to have a range. That's what I used to do.
https://www.machiningdoctor.com/calculators/chip-thinning-calculator/
here is a site that will give factoring for radial and axial chip thinning. The axial factoring take into account ball and button tools based on DOC as well as "lead angle" of cutting edge (ie) high feed cutters. I just came across this site so look it over to see if it's suitable for your needs. It does give a good examples and explanations. I have the app from this site but to me it's not comprehensive enough.
Yep I had the same issues. I think I just ended up defining a custom tool with the comp point at the leading face of the insert.
Not that this solves your issue but making a 3D tool at the front of the insert seems possible.
Would this be for a twin screw pump? I am very familiar with this type of component if that's what it is. I used a mazak Integrex machine.
Sorry but my French is not non existent
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