Thanks Ray and Andre,
Yes, it is the grooves, ridges and frilly stuff I'm after... Only on
drum shells which are similar but not enough the same to just run. Oh
well, it never hurts to ask. I'm pretty sure it COULD be done, I'm also
sure I don't know enough to do it at this time. It may be time to go
back to the move the whole axis mechanically method. Sort of like a wood
lathe's tool rest with a cnc attached. Hmmmm.... Good idea huh!
Andre,
I will have to check out G68. I don't have to tell the software it's a
lathe instead of a mill.
Thanks,
Clint
------------------------------
Message: 8
Date: Mon, 19 May 2008 08:19:15 -0500
From: "Andre' Blanchard" <[EMAIL PROTECTED]>
Subject: Re: [Emc-users] Can emc do this? Not normal homing...
To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 07:31 AM 5/19/2008, you wrote:
> >Hi Clint
> >
> >Fascinating. No EMC2 doesn't do that with a stock install or even a
> >simple config change. This seems to me to be more like angling the tool
> >rest on a wood lathe and then using your finger to hold the cutting end
> >of the tool at a fixed distance from the rest.
> >
> >A non-trivial kinematics would allow you to skew the X in relation to
> >the Z. I don't think ordinary machine "home" is a useful way to think
> >about this. It would require quite a bit of change to the kinematics to
> >allow you to change the angle of the XZ relationship as simply as making
> >a couple of "zero here" button presses. I'm thinking that you'd have to
> >change values in the kins file and recompile for each angle. But then
> >you could compile several of these kinematics files and load the one
> >nearest to the angle you are trying to match.
> >
> >I presume that the reason you'd like an Z0 that is at an angle to the
> >actual path of X is that you have grooves and ridges and frilly stuff
> >along the length of the drum shell. Personally I a lot rather see you
> >handle the part program code in some sort of CAD/CAM or dedicated script
> >routine and leave the definition of the lathe as a lathe. I can imagine
> >drawing up a cross section of the shell in CAD and then simply rotate
> >all of it to the desired angle and press the make gcode button.
> >
> >Not much help.
> >
> >Rayh
Does the G68 command work on a lathe setup in EMC?
Could have a macro to help pick up the two points and automaticaly set the
work offset and calculate the angle.
__________
Andre' B. Clear Lake, Wi.
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