Hi All The current discussion on making an ATC for ER collet style spindles has given me an idea. As Gene aptly says, R8 and ER collets weren't designed with ATC's in mind.
In the application of routing, engraving and other light duty machining, the assembly of ER collet, nut and tool could be reduced to a simple screw-on tool holder. The collet itself would be dispensed with and the nut itself becomes a tool holder, with a Weldon style nose. Mostly it relies on the nut mating with the face of the spindle. I have attached two pictures(not to scale) showing how it might look, using a simple D bit, and where the second toolholder has a core that engages with the cone of the spindle for heavier duty tooling. A dozen of these could be machined by the user to take various tools. Obviously this design is to used on the Hackaday or similar ATC https://ibb.co/6vpFs97 https://ibb.co/dpwVLkB Thoughts?? _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
