Yes, you are missing something.  I think :) typical umbrella style tool
change goes something like this
  head moves to tool change position (spindle inline with carousel)
  carousel moves toward spindle
  spindle releases tool
  head rises above carousel and said tool
  carousel rotates to next tool
  spindle lowers onto tool
  spindle clamps said tool
  carousel retracts

HTH
Jon


Snip...

Maybe I'm missing something here, but how can you change the tool,
higher than the tool change level? doesn't the spindle have to be at the
same level as the carousel?



Sent by: � � � [EMAIL PROTECTED]

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cc:

Subject: � � � �RE: [mfg-smartcam] Haas tool change question


You could try using an incremental positive Z move immediately after the
tool change.

i.e.

G91 G28 Z0
T1 M06
G91 Z4.0
G90

==================================================
Fred Lauzus, CAM Programming Coordinator
High Steel Structures, Incorporated
mailto:[EMAIL PROTECTED] http://www.highsteel.com
==================================================





-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Friday, August 29, 2003 5:27 PM
To: [EMAIL PROTECTED]
Subject: [mfg-smartcam] Haas tool change question


We work with tall fixtures on large angle plates on a Haas VF2 mill. The
tool change level is about 4" lower than the highest point of the
spindle travel. The G91 G28 Z0 line takes the spindle to tool change
level, and sometimes this isn't high enough to clear the fixture.

My question is this:

Does anyone know another code, or some other way to have the spindle go
all the way up?

I am currently adding lines at the machine like: G00 G90 G54 Z8.0
(depending on where part Z zero is) to take the spindle as high as
possible, but this changes with each program and setup.

Thanks,
Bob.

Robert T. Callahan
Greene, Tweed & Co.
CNC Programmer
Corporate Manufacturing
[EMAIL PROTECTED]
215-256-9521 ext. 1569



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