Thanks,
I'll try the nist-lathe config.
Does the index output need to be one pulse per revolution?
Can it be similar to what there is in mach2 program: several pulses per rev
with one pulse wider than the others.
Thanks, Isak.
----- Original Message ----
From: Jeff Epler <[EMAIL PROTECTED]>
To: Isak Levinson <[EMAIL PROTECTED]>; Enhanced Machine Controller (EMC)
<emc-users@lists.sourceforge.net>
Sent: Thursday, May 24, 2007 3:37:16 PM
Subject: Re: [Emc-users] Lathe Threading in EMC
Yes, it is possible. You need a spindle with encoder and index pulse
output. The sample configuration "nist-lathe" shows the necessary HAL
configuration when the encoder is connected to parport pins 11, 12, and
13.
The sample ngc file "threading.ngc" uses a bunch of G33 (spindle
synchronized motion) commands to cut a thread; the file "g76.ngc" uses
the threading canned cycle to make a 20TPI thread.
The User Manual has a descrition and diagram of the numbers that are
used by the G76 threading cycle -- page 143 in the version here:
http://linuxcnc.org/docs/2.1/EMC2_User_Manual.pdf
Jeff
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