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Topics - aliasant

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General Mach Discussion / 4th A axis irradical behaviour
« on: January 17, 2018, 03:27:32 AM »
Hi everyone.
I have used my 4-axis machine to create gears with great success but this past week it has started to act weird.

I have the A axis set to rotational angular and limit to 360 and shortcut G0 is active.
I use:
E-Cut 4axis board
Mach3 043.066
Win10 Pro x64


Heres a scenario example:

I load my code to drill 6 holes on a round part with 60 degrees between holes and finish one or two parts. Everything works as expected.
Then, instead of moving from A0 (or were ever the problem starts) to A60 it goes part of the way then suddenly skips to say A165.5347
The axis stops rotating were the big jump starts. The drilling commences.

I hit e stop and then I can jog back to the angle were it jumped from. Say it was 8.3562.

Now i can jog back and forth in one single small step from 8.3562 directly to A165.5347 but the head only rotates that single step.

Anyone familiar with this?

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