I started using a new cnc mill 6 months ago.( the first that the company I work for has purchased ). It came with an Align power drawbar. The problem I am having is the toolholder does not engage the dogs before the drawbar pulls it up into the taper. The toolholder is 5/16" to 3/8" away which causes the toolholder to jam on the dogs if it is not lined up correctly( which during a day of tool changes happens frequently). This causes the first thread or two on the drawbar to stretch after a couple of months which requires disassembly and chasing of the threads.We tried shortening the drawbar but this also causes the length of engaging threads to shorten. It resulted in a smashed cutter when the toolholder loosened from chatter. We were told by the company who sold us the machine that all drawbars work this way but I find it hard to believe this with all the technology available these days. Any help is appreciated. Thanks Lou

hey Lou,
What typr of cnc is it and what type of tool changer..ie carousel, basket type ect.. also what type of tool holder are you using? HK, HSK ect..
where abouts are you in Ontario? PM if you want...

trublshtr
The cnc is a bed type ( Maximart ) with Fagor automation 8040 mc. There is no tool changer, it is like a conventional mill with a power drawbar. Most of the tooling I have is GS. I am in Sudbury. Not sure what you mean by pm ( I am new to this forum).Lou

hi lou,
PM = private messeage...just thought incase you did not want to advertise where you are in a public forum.. no big deal...I am in the GTA, and thought if you were close by I might be able to assist you?
have you made any progress? Sounds like maybe a diff. type of tool holder is needed?