I'm half way through retrofitting a Cincinnati VMC with a MESA m5i20 setup. I
would welcome some advice as to the best way to control the spindle. My goal is
to be able to do rigid tapping and fully automatic tool changes. My thoughts are
that since I am planning on adding a 4th rotary axis very so
On Mon, Sep 10, 2007 at 10:28:37PM +, Neil Buck wrote:
> I'm half way through retrofitting a Cincinnati VMC with a MESA m5i20 setup. I
> would welcome some advice as to the best way to control the spindle. My goal
> is
> to be able to do rigid tapping and fully automatic tool changes. My thoug
On Tue, Sep 11, 2007 at 08:57:48AM -0500, Chris Radek wrote:
>
> If your spindle drive can do this (you can test
> with S300 M3, then M4) it will tap just fine. You should pick a
> speed that allows the spindle to reverse in "a few" turns.
One more thing I remember hearing: VFDs may need a braki
On Mon, 10 Sep 2007, Neil Buck wrote:
> Date: Mon, 10 Sep 2007 22:28:37 + (UTC)
> From: Neil Buck <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: emc-users@lists.sourceforge.net
> Subject: [Emc-users] Spindle Speed Control
> Dont know if the driver has been updated to work with it, but thre has been a
> 8 axis 5I20 HOSTMOT configuration around for some time. (If you dont need
> more than 1 connectors worth of I/O)
> Peter Wallace
the driver has not been updated for 4 vs. 8-axis HOSTMOT.
Likewise it would be nice
> On Mon, Sep 10, 2007 at 10:28:37PM +, Neil Buck wrote:
>
>>I'm half way through retrofitting a Cincinnati VMC with a MESA m5i20 setup. I
>>would welcome some advice as to the best way to control the spindle. My goal
>>is
>>to be able to do rigid tapping and fully automatic tool changes. My
Chris,
Thanks for the info. I'll give the filtered PWM option a try. I'm in the process
of hooking up the spindle encoder at the moment so will soon see what resolution
it's got. I can see from the wiring diagram that it's A & B quad and index but
I've no idea what resolution. The axis motors all
Peter, Anders
In my case 8 axis support in the driver would be nice for the next project I'm
working on (conversion of a Wessel CNC router to EMC control + AC Servos +
Perske spindle) although for the VMC I'm retrofitting at the moment I need all
the IO I can get. The IO for the toolchanger is lo
On Mon, 2007-09-10 at 22:28 +, Neil Buck wrote:
> I'm half way through retrofitting a Cincinnati VMC with a MESA m5i20 setup. I
> would welcome some advice as to the best way to control the spindle. My goal
> is
> to be able to do rigid tapping and fully automatic tool changes. My thoughts
>
SNIP
>
> I have limited knowledge and experience with electronics, but here is
> some of my recent experience with my spindle VFD.
>
> Just for testing, I used a parallel port out put with an RC filter and
> found that to smooth the signal, the capacitor had to be quite large
> which also slowed th
At 01:25 PM 9/11/2007, you wrote:
>Doesnt EMC have a PDM output option?
>This would be _much_ easier to filter than PWM.
>
>With PDM a ~.1 second time constant filter should be fine
>
>
>
> >
>
>Peter Wallace
>Mesa Electronics
>
>(\__/)
>(='.'=) This is Bunny. Copy and paste bunny into your
>(")_(
On Tue, 2007-09-11 at 11:25 -0700, Peter C. Wallace wrote:
> SNIP
> >
> > I have limited knowledge and experience with electronics, but here is
... snip
> > Kirk Wallace
> >
>
> Doesnt EMC have a PDM output option?
> This would be _much_ easier to filter than PWM.
>
> With PDM a ~.1 second time c
Kirk Wallace wrote:
> As far as the "up to speed" signal - for
> tapping, the active axis is electronically geared to the spindle, so no
> matter what the spindle is doing the axis will try to follow it. I am
> thinking that the "up to speed" signal might be used for fault sensing
> for spindles w
Kirk Wallace wrote:
> On Tue, 2007-09-11 at 11:25 -0700, Peter C. Wallace wrote:
>
>>SNIP
>>
>>>I have limited knowledge and experience with electronics, but here is
>
> ... snip
>
>>>Kirk Wallace
>>>
>>
>>Doesnt EMC have a PDM output option?
>>This would be _much_ easier to filter than PWM.
Isn
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