I have a Bison 5C collet chuck with an integral D1-4 backplate mount that I use it on my lathe. I was thinking it would beneficial for me to also mount this on my 8Ē rotary table. That way I can accurately hold anything with the collets for radial/indexing operations on the mill. Better yet if I could maintain the workpiece in the chuck & move it back & forth from the RT to lathe for certain operations. I havenít come across any commercial fixtures like this, any bacplate accessories seem to be the same diameter as the chuck & notreally mountable like with a flange. I considered:
- machining a dedicated Ďdiscí with holes that mate chuckís D1-4 pins extending off the back & with integral mounting holes on an extending flange to clamp the chuck/plate assembly to the RT tee-slots (seems like somewhat of a project, at least for my skills).
- removing the pins from the back of the chuck (they appear to be held in position with allen head cap screws, kind of indexed into the pin side) which exposes what I suspect is a pretty accurate rear face of the chuck, then mounting this to the RT with some simple type bar clamps once centered. (Iím doing this now with a conventional 3-jaw chuck, but it is already a plain back style so no pins to contend with). But is removing/replacing the pins advisable in terms of maintaining chuck accuracy?
If these options arenít advisable for any reason, am I looking at buying a plain-back 5C collet chuck just for the use on the RT? Iíve seen less expensive 5C collet holder Ďblocksí with variations of a lever activated clamping mechanism. They cost less than a 5C chuck & could be similarly mounted, although most appear to ground square & intended for mill vice setups etc. Any help/comments appreciated.