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Mach4 General Discussion / Screwcutting issue under Mach4
« on: March 26, 2020, 02:56:27 AM »
Gday all. I have an issue with mach4 when screwcutting, both G76 and G32 are effected.
The spindle speed constantly varies as each cut progresses. Starts out slow around 75 rpm, rises to 400 rpm at the end of each cut. the command speed being 400 rpm. The Z feed is increasing to compensate, but cuts an interesting Thread. The effect is very like CSS as the Diameter increases, except its the Z axis.
Only happens in screwcutting and the correct G97 is specified.
I am using an ESS, but I cannot find any issues in the Configuration.
Hoping someone can help. I took a video of this that I could include if it helps.
The spindle speed constantly varies as each cut progresses. Starts out slow around 75 rpm, rises to 400 rpm at the end of each cut. the command speed being 400 rpm. The Z feed is increasing to compensate, but cuts an interesting Thread. The effect is very like CSS as the Diameter increases, except its the Z axis.
Only happens in screwcutting and the correct G97 is specified.
I am using an ESS, but I cannot find any issues in the Configuration.
Hoping someone can help. I took a video of this that I could include if it helps.