On 2/5/24 18:26, John Dammeyer wrote:
Thanks everyone. On the Unimat list there were a number of people really
pushing the idea that Z+ was towards the chuck and it just didn't make sense.
And as we all know, nowadays once can find an internet source that supports
almost anything.
Now if only the wand with the partridge feather core would arrive. I'm sure
the site selling it was not a con job.
That bit of humor John, reminds me a a msg I got from Ray Henry a day or
so ago. Said he wished he had known that a snow blower purchase was good
at warding off snow he would have bought one 20 years ago. He is in the
UP and has only had 1, 2" snowfall since buying a blower....
I'm in WV and had 16" on the front deck about 2 weeks ago. Long gone now
of course.
John
-----Original Message-----
From: andrew beck [mailto:andrewbeck0...@gmail.com]
Sent: February 5, 2024 3:05 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Axis direction
Same here every machine I have used (12 years CNC machining). negative z
is always towards the chuck.
Or on a mill brings the tool down to table. Or table up towards tool
On Tue, 6 Feb 2024, 09:23 Sam Sokolik, <samco...@gmail.com> wrote:
Even the k&t with a discrete component 60's control had smaller numbers
towards the spindle...
On Mon, Feb 5, 2024, 1:36�PM <marcus.bow...@visible.eclipse.co.uk>
wrote:
John,
Leaving aside right or left hand rules etc, leaning your head towards
your left shoulder shows that the relationship between the spindle and
the carriage is the same as on a vertical mill.
To bring the spindle closer to the carriage is a move in the -Z
direction.
If the argument is about the tool position, with the work in the chuck,
tilt your head to the right and you now have the tool on the right and
the work on the left, like a mill with the tool above (on the right) and
work in the chuck below (on the left0. Now the movement of the tool
towards the work is still -Z.
Marcus
On 2024-02-05 18:01, John Dammeyer wrote:
There's been an interesting discussion on the Unimat users list about
axis direction. As usual someone can always find something on the web
that supports their opinion.
For example this one:
https://digit-chain.com/names-of-axes-in-cnc-machine/
However I disagree that movement towards the rotating axis, be it the
chuck on a lathe or the spinning cutter in a mill spindle, is a Z+
direction. Doesn't even seem intuitive to me either.
Now it's true that you can set the Z=0.00 position anywhere in the
G54... spaces depending on what you touch off on. And then a
movement
toward the spindle could be positive. But in an G53 machine
coordinate space isn't a Z- direction towards the spinning tool or
part?
That's the way I have my LCNC system and MACH system set up. Even
my
ELS is negative towards the lathe chuck.
John
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
