- Feb 7, 2007
- Aberdeen, UK
Sounds like the synchronization process is just slow and cumbersome, probably Doosan's integration of it.
On a sub-spindle or dual-spindle Mazak, we could clamp the sub-spindle on the part, then just let it "free ride", if synch is not needed. Main spindle has plenty of power to drive part and sub together.
Can Fanuc/Doosan do this? Might be a cheezy workaround to the long, long synch and un-synch cycles....
The tool pausing to cut until the programmed SFM is reached should be a parameter...??
Of course you can do that on a Fanuc, but if you are cutting off without driving the sub as well, what happens to the part off insert as it breaks through to centre? And the synchronisation doesn't take long, just a fraction of a second.
OP's problem is probably related to spindle tuning or probably specific acceleration rate parameters during sync.