Rotary zero return question

[CRFJim]

A few months ago I made a spiral cut in a roll, thanks to some big-time help from you guys. I'll be making a couple more soon and I have a question. The cut is on an approx 8" dia roll, about 33" in length. I don't have access to the file (I'm at home) but I think it made something like 10 revolutions, starting at A0. By the time it finished the cut, it was at A3600 (obviously) and then picked up to a Z clearance, made a rapid move back to the right side of the roll and held the tool above the roll while I waited for what seemed like forever for the rotary to index itself back to A0. Isn't there some way to eliminate the rotary fomr having to "unwind" 10 full revolutions? BTW, I'm using V9.1 on a Haas VF6 with (I think) a Haas HRT310 rotary. Thanks! Jim

[John Summers]

If you use ROLLDIE, use the SLOT option and AUTOREVERSE. Use the centerline geometry of the slot to cut with ROLLDIE. If you don't want to use AUTOREVERSE, make separate cuts, selecting the geometry to go in opposite directions, and change the cutting depth each time. Lie about the slot width, and declare it to be the same as the cutter while roughing.

[Guest CNC Apps Guy 1]

Also, there is a parameter in Fanuc Machines to not hav e to unwind a thousand times to Zero Return. #1008.0 It's called Rollover function. 1 I think is what you want it set to. I'll double check monday...

[CRFJim]

Thank You!