On Sun, Oct 28, 2007 at 11:32:26AM +0100, Geert De Pecker wrote:
> Chris,
>
> On your website, there is a picture of the mod you did to the sherline
> spindle speed control. It looks like you bypass the max-speed trimpot
> with an optocoupler.
>
> Are you able to get from lowest to full speed wit
Chris,
On your website, there is a picture of the mod you did to the sherline
spindle speed control. It looks like you bypass the max-speed trimpot
with an optocoupler.
Are you able to get from lowest to full speed with this mod?
Is this a regular optocoupler?
I understand you drive the coupler
Jeff Epler wrote:
> It may be useful to refer to the docs, which I believe are up to date
> http://linuxcnc.org/docs/devel/html/gcode_main.html#sec:G33,-G33.1:-Spindle-Synchronized
> .. but perhaps this conversation can help improve the documentation.
>
> On Mon, Oct 15, 2007 at 11:33:27AM -0700,
Kirk Wallace wrote:
>>
>
>
> The only reason I put the G4's in was to try attenuate the low
> acceleration problem. I wonder if it is worth fixing.
>
> I am getting the impression that the spindle index is what starts the
> selected axis movement.
No, I think there has to be more to it than th
On Mon, Oct 15, 2007 at 11:33:27AM -0700, Kirk Wallace wrote:
>
> - Can a K be applied to each axis? Such as G33 z1.0 k0.050 x0.100
> k0.010. I suppose, I could just try it and see what happens.
If I understand what you want, you get it just by specifying a
diagonal move. K is the pitch _along t
It may be useful to refer to the docs, which I believe are up to date
http://linuxcnc.org/docs/devel/html/gcode_main.html#sec:G33,-G33.1:-Spindle-Synchronized
.. but perhaps this conversation can help improve the documentation.
On Mon, Oct 15, 2007 at 11:33:27AM -0700, Kirk Wallace wrote:
> - Can
Sent: Monday, October 15, 2007 2:33 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] HNC Lathe Spindle Sync Motion
On Mon, 2007-10-15 at 11:05 -0500, Chris Radek wrote:
> On Mon, Oct 15, 2007 at 10:49:05AM -0500, Jon Elson wrote:
> >
> > Lines A and B are separat
On Mon, 2007-10-15 at 11:05 -0500, Chris Radek wrote:
> On Mon, Oct 15, 2007 at 10:49:05AM -0500, Jon Elson wrote:
> >
> > Lines A and B are separated by about 1/3 of a second. If your
> > spindle speed is roughly 180 RPM, then they are separated by one
> > turn of the spindle. EMC decides whi
On Mon, Oct 15, 2007 at 10:49:05AM -0500, Jon Elson wrote:
>
> Lines A and B are separated by about 1/3 of a second. If your
> spindle speed is roughly 180 RPM, then they are separated by one
> turn of the spindle. EMC decides which turn is best to sync to.
See my other message for a descrip
Kirk Wallace wrote:
> After looking at the graph for a while, it came to me that the slope of
> the Z0 to Z2 move intersects the vertex of the Z2 to Z0 move and the
> G4p0.2 dwell. Shown as line "A" my revised graph here:
>
> http://www.wallacecompany.com/cnc_lathe/HNC/emc2/spindle_sync_surge-1b.p
On Sun, Oct 14, 2007 at 06:00:46PM -0700, Kirk Wallace wrote:
> http://www.wallacecompany.com/cnc_lathe/HNC/emc2/spindle_sync_surge-1b.png
Like Jon says, the axis needs some time to sync up with the spindle.
The lower your acceleration is, the harder this is to do, and the
farther "outside" the t
On Sun, 2007-10-14 at 18:00 -0700, Kirk Wallace wrote:
> Last week I made my first thread on my lathe. It didn't take long to get
> good threads, but I wasn't happy with the PID tuning, so I have been
> doing battle with that. After some improvement, I tried another thread
> and got a pronounced su
Kirk Wallace wrote:
> Last week I made my first thread on my lathe. It didn't take long to get
> good threads, but I wasn't happy with the PID tuning, so I have been
> doing battle with that. After some improvement, I tried another thread
> and got a pronounced surge motion during the threading pas
Last week I made my first thread on my lathe. It didn't take long to get
good threads, but I wasn't happy with the PID tuning, so I have been
doing battle with that. After some improvement, I tried another thread
and got a pronounced surge motion during the threading passes. This
happened last week
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