On Sun, 8 Mar 2020, Sam Sokolik wrote:
Date: Sun, 8 Mar 2020 23:43:30 -0500
From: Sam Sokolik <samco...@gmail.com>
Reply-To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Subject: Re: [Emc-users] Non-circular boring. Linuxcnc style.
The polygon Hal component can be enabled/disabled.
Here is me experimenting with parameters
http://electronicsam.com/images/greenmachine/2020-03-07-191256_1920x1080_scrot.png
Since the spindle velocity is relatively constant it might be possible to low
pass filter the spindle position and make the xy motion a bit less "crunchy"
On Sun, Mar 8, 2020, 11:34 PM John Dammeyer <jo...@autoartisans.com> wrote:
But how is it done then? I mean you wouldn't want X and Y moving on you
when you accidentally turn the spindle while tightening the drill chuck.
Yet it appeared your turned the tool and the XY axis moved.
Thanks
john
-----Original Message-----
From: Sam Sokolik [mailto:samco...@gmail.com]
Sent: March-08-20 9:02 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Non-circular boring. Linuxcnc style.
The spindle has a 36 tooth gear with quadrature gear tooth sensors. So
only
144 counts per rev. Partly why it is so noisy.
On Sun, Mar 8, 2020, 10:30 PM John Dammeyer <jo...@autoartisans.com>
wrote:
Cool.
How is this done? As I recall your spindle didn't have 1000 pulses per
rev or anything. Does it just calculate the current angle of the
spindle
and then send motion commands to XY?
Thanks
John
-----Original Message-----
From: Sam Sokolik [mailto:samco...@gmail.com]
Sent: March-08-20 8:18 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Non-circular boring. Linuxcnc style.
Exactly
On Sun, Mar 8, 2020, 10:16 PM John Dammeyer
<jo...@autoartisans.com>
wrote:
So was it using the spindle position as you turned it manually to
move
X
and Y?
John
-----Original Message-----
From: Sam Sokolik [mailto:samco...@gmail.com]
Sent: March-08-20 7:09 PM
To: Enhanced Machine Controller (EMC)
Subject: [Emc-users] Non-circular boring. Linuxcnc style.
Using eoffset functionality - I created a small hal component
that
calculates a polygon based on the tool orientation - moving x
and y
accordingly.. It is based on work that andy did on his lathe.
You enter tool radius, number of sides, inscribed radius of the
polygon.
(still a work in progress - I don't have a way a easy to set the
tool or
polygon orientation.)
based on this formula
https://math.stackexchange.com/a/41954
I forgot to copy my current code off the machine.. will this
week.
https://www.youtube.com/watch?v=c9tWtEG1Exc
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Peter Wallace
Mesa Electronics
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