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Author Topic: c axis spindle on a lathe strange problem  (Read 79 times)

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Offline fast89

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c axis spindle on a lathe strange problem
« on: August 08, 2021, 08:45:24 PM »
I have a lathe that uses an ac servo for the spindle motor. It is set up to function as a spindle motor but also a servo for c axis positioning. I've always struggled with the steps per unit (degrees). If i rotate at 10000 degrees per minute i get a different amount of rotation than if i rotate at 90000 degrees per minute. I've never been able to figure out why. I'm using version 3.043.045 as this allows the pokeys plugin and also better rapids than .062. I do not use rot 360 rollover so i can program 1000's of degrees to rigid tap to depth. So why does rotational speed affect the steps per degrees?