spindle sync on EMCO

[deckerc]

Does anyone know if I can sync the spindle with the z motion on an EMCO Turn 325 with a Fanuc 21-T? Basically I'm trying to cut a grove on the OD of a sphere. I can't use the threading cycles because of the arc. I found a pattern repeat cycle(G75) for this machine which does the x/z motion, with a step down, that I want but the spindle isn't synced.

[crazy^millman]

There should be some sync codes for the spindles and you might also need to do a barrier or to close to sub spindle cancel to get this to work as well. Get out oyur book. Most machine require that you call a spindle speed as well as the M-code to sync them. Just calling the Sync without turning them might give them a problem.

 

HTH

[deckerc]

I might have used some bad terms here. There is no sub spindle. I just want to cut a grove on a sphere. You could almost call it a spherical thread. Everytime I take a depthcut on it, it starts at a different spot on the spindle rotation.

[chris m]

I think you're porked on that unless the machine can do polygon turning [since that would require the type of synchronization you're talking about]. Sorry.

 

Got a mill with a trunnion table?

 

C

[deckerc]

We currently do these in a mill. Just looking to eliminate an extra set up.