Hello Graham and Others,
I have a threaded sample from a commercial CNC lathe, make and model unknown. I will duplicate this part using Mach and my lathe.
Upon close inspection with a microscope, the thread was cut in at least 4 passes.
I can clearly see that each successive pass retracts approximately 30 degrees (of Rotation) prior to the previous pass.
Are some controls designed this way for the G76 cycle ?
Do you know which systems use this technique ?
Also, there is absolutely NO pitch variation during the extraction as it is with Mach.
Curious as always,
RC