On Thursday 16 January 2020 12:42:01 Gene Heskett wrote:
> On Wednesday 15 January 2020 22:59:20 Jon Elson wrote:
> > On 01/15/2020 09:10 PM, Brent Loschen wrote:
> > > In addition to the split pulleys, my "mechanical" concerns
> > > are more along the lines of the heavy duty electrical
> > >
On Wednesday 15 January 2020 22:59:20 Jon Elson wrote:
> On 01/15/2020 09:10 PM, Brent Loschen wrote:
> > In addition to the split pulleys, my "mechanical" concerns
> > are more along the lines of the heavy duty electrical
> > contactors clunking every time the fixed speed, 3 phase AC
> > spindle
On Wednesday 15 January 2020 22:10:37 Brent Loschen wrote:
> On 1/15/2020 3:22 PM, Gene Heskett wrote:
> > I should probably interject here that with a good high-res encoder,
> > it won't care about the wobbly speed mechanics as long as it keeps
> > on turning under load. The z axis rigid tapping
On 01/15/2020 09:10 PM, Brent Loschen wrote:
In addition to the split pulleys, my "mechanical" concerns
are more along the lines of the heavy duty electrical
contactors clunking every time the fixed speed, 3 phase AC
spindle motor is called to switch back and forth;
increased heat in the
On 1/15/2020 3:22 PM, Gene Heskett wrote:
I should probably interject here that with a good high-res encoder, it
won't care about the wobbly speed mechanics as long as it keeps on
turning under load. The z axis rigid tapping motion is 100% controlled
by the spindle position as it turns. Since
On Wednesday 15 January 2020 13:18:09 Brent Loschen wrote:
> Thanks for your reply Andy, and yes, PWM would be odd choice for the
> BP. I chose PWM for this "lab" project, because in addition to the BP
> mill, I have a LCNC router with an analog controlled VFD which is next
> in line for a
Thanks for your reply Andy, and yes, PWM would be odd choice for the
BP. I chose PWM for this "lab" project, because in addition to the BP
mill, I have a LCNC router with an analog controlled VFD which is next
in line for a conversion. Getting an analog controlled PWM to work
properly
On Wed, 15 Jan 2020 at 03:09, Brent Loschen wrote:
> The DC motor speed is
> currently controlled with a pot wiper on a small PWM driver board. The
> goals of this test bed are to show spindle RPM , control the DC motor
> with 0-5vdc from the 7i76 , and use knowledge gained to convert the BP.
On 1/14/2020 9:13 PM, Peter C. Wallace wrote:
On Tue, 14 Jan 2020, Brent Loschen wrote:
Date: Tue, 14 Jan 2020 20:06:36 -0700
From: Brent Loschen
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: [Emc-users] hel
On Tue, 14 Jan 2020, Brent Loschen wrote:
Date: Tue, 14 Jan 2020 20:06:36 -0700
From: Brent Loschen
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: [Emc-users] help with spindle speed
Almost a year ago I converted m
Almost a year ago I converted my servo'd Bridgeport/Boss to LinuxCNC and
it works sooo much better than that old and slow 68000 control that I've
been reluctant to change anything. The only remaining todo is to
convert the spindle speed control from the current mechanical switch to
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