Re: [CAD_CAM_EDM_DRO] Multi tool sector

In a message dated 9/11/01 9:33:44 PM Hawaiian Standard Time,
info.host@... writes:

<< Just out of interest, would there be any way to make a tool changer for a
mill using an automatic draw bar and a solenoid? Could you tell the mill
that to change tools it must move to a certain point, release the draw bar,
move to another, then re-engage it? <snip>
Thanks,
John H. >>

John,

If it was not for the pesky little keyway in the R-8 spindle, I'd say it
would be easy to do. Other tapers may be more or less difficult. I have run
R-8 mills with the keyway removed and they run OK as long as one takes care
to properly torque the drawbar. So, if you could set up a rack or bar type
tool carrier, it would be easy to set up a tool changer. I 've been
considering using a Kurt or Aussie pneumatic drawbar unit. Remove the stock
push button setup and replace with a solenoid valve run via PLC. I would hang
a few sensors to verify actions have occured or nasty tool crashes could
occur. It's gonna be a chore to keep the tapers clean as the tool rack would
be inside the mill's work envelope. Perhaps a trap door arrangment with an
air blow off to be double sure. Would be nice to switch from rougher to
finish end mill and or to a drill etc.


Peter
THRD, Inc.