Re:
Posted by
Ray Henry
on 2000-02-17 20:49:18 UTC
Charles
g33 command. There is a milling relative in g84.
I wrote a little routine in tickle that spits out a block of standard g
code for threading with emc. I put in length, pitch, number of passes and
x,z incremental offsets and it writes the block for me. But I don't have
the feedback from the spindle encoder ready yet. We're still talking about
it.
As for the x and y offsets for turning I just use a stack of variables in
the emc parameter file. This file is just about as easy to edit as is the
tool file. My Harding has a rotating 8 sided tool holder so I set up 8
blocks of variables and can have as many offsets as I want for each tool.
You can read more about variables in EMC nc programs in the
linuxcnc.org/cookbook. The examples there are all milling examples.
Ray
>Message: 25 [CAD_CAM_EDM_DRO] Digest Number 367<snip.
> Date: 18 Feb 2000 02:16:21 -0000
> From: keller@...
>Subject: G33 code and encoder etc. for *hobbyists?*
>I would like to find a cheaper alternative, for hobby use, based on a CNCsherline
>lathe with a thread encoder and inexpensive G code interpreter that supportsthreading)
>the G33 command. Many companies offer sherline CNC equipped lathes but the
>only G33 capable machine i can find is this one from microkinetics. Even
>purchasing their threading kit alone ($ 269) would be ok, but i am uncertain
>about the hardware/software interface with other company's motion control
>driver boards and software.... Anyone have ideas? or is G33 (canned
>for hobbyists an oxymoron?? <G>I don't know whether your considering EMC. EMC does not currently have a
g33 command. There is a milling relative in g84.
I wrote a little routine in tickle that spits out a block of standard g
code for threading with emc. I put in length, pitch, number of passes and
x,z incremental offsets and it writes the block for me. But I don't have
the feedback from the spindle encoder ready yet. We're still talking about
it.
As for the x and y offsets for turning I just use a stack of variables in
the emc parameter file. This file is just about as easy to edit as is the
tool file. My Harding has a rotating 8 sided tool holder so I set up 8
blocks of variables and can have as many offsets as I want for each tool.
You can read more about variables in EMC nc programs in the
linuxcnc.org/cookbook. The examples there are all milling examples.
Ray
>(BTW, a search of this list's archive for "G33" gave only one hit.
>ANY discussion whatsoever on this issue is welcome!!!)
>
>charles keller
>keller@...