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General Mach Discussion / Re: Problems threading on the lathe
« on: March 24, 2009, 05:48:12 AM »
I am following this thread with much interest as I am encountering the exact same kind of threading problems as narrated by others here.
I am using the index pulse of a differential encoder as a feedback to the spindle and it was pointed out to me that the index pulse width may not be enough for Mach3.
Can someone tell me what is the minimum pulse width or better pulse time (milliseconds?) needed by Mach3? I may use a 555 to stretch the pulse width or time. I know that this may depends on the kernel speed and I am running at 60 KHz kernel speed.
I have tried the Mach3 3.042.24 with PP and it is much better already. However, this is the first time that I encounter my spindle (1 Kw - for a Sieg C6 mini lathe) slowing down to also zero RPM even under no load when threading at a set speed of 300 RPM. Did anyone else encounter this same situation?
Weedy
I am using the index pulse of a differential encoder as a feedback to the spindle and it was pointed out to me that the index pulse width may not be enough for Mach3.
Can someone tell me what is the minimum pulse width or better pulse time (milliseconds?) needed by Mach3? I may use a 555 to stretch the pulse width or time. I know that this may depends on the kernel speed and I am running at 60 KHz kernel speed.
I have tried the Mach3 3.042.24 with PP and it is much better already. However, this is the first time that I encounter my spindle (1 Kw - for a Sieg C6 mini lathe) slowing down to also zero RPM even under no load when threading at a set speed of 300 RPM. Did anyone else encounter this same situation?
Weedy