Originally Posted by
samirnashef
Hi, I'm having a problem cutting a double-thread with a lathe using two cycles of G-76. After cutting the first thread through the first cycle, it is supposed to go to the next cycle with the tool half the lead away from its initial position, but the problem is that it seems that the machine is missing the required synchronization between the turning head and the tool so the resulting teeth are having different widths.
Does anybody have an idea on how to force the machine not to lose this synchronization?
Thnaks
Samir
This definately sounds like a synchronization problem. Just to give another option try G92 type A thread cutting cycle. To my knowledge there really isn't a way to Force Synchronization between the Spindle and Turret. This may need a Tech to fix the problem machanically or a Parameter Change. Also check your control programming manual because in the past I've had machines that wouldn't perform Triple start threads due to the fact that it was not capable. Which doesn't make any sence?
Toby D.
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