Can I drive the G203v from the header or will I need a breakout card of
some sort?
JT
On 8/24/2013 8:01 AM, andy pugh wrote:
> On 24 August 2013 12:39, John Thornton wrote:
>
>> My buddy had one of his BP's converted
>> to timing belt VFD drive and it is very quiet running.
> You could fit two
On 24 August 2013 12:39, John Thornton wrote:
> My buddy had one of his BP's converted
> to timing belt VFD drive and it is very quiet running.
You could fit two sets of timing belt pulleys, and then switch between
two ranges (at some effort).
> Oh on the subject of steppers for this machine I
up yet... I have a 5i25
7i77 in a tiny computer with only one PCI slot and no parallel port.
Thanks for all the input.
JT
On 8/23/2013 8:46 PM, Gregg Eshelman wrote:
> On Fri, 8/23/13, Greg Bentzinger wrote:
>
> Subject: Re: [Emc-users] BP Knee Mill Spindle
> To: emc-users@lists.so
John Thornton wrote:
> Oh to answer your question:
> 1 to get a quieter drive, the vari-speed is very noisy even with new
> everything.
>
When the bushings in the motor pulley are shot, the moving flange
wobbles and
wears away at the motor shaft. Eventually, the motor shaft is
destroyed, the
John Thornton wrote:
>
> What spindle RPM does that give you? I assume 20% you mean the motor is
> running at 350 or so RPM?
>
Hmmm, seems like I calculated something wrong. With the belts set for 2720
nominal RPM, and I call for 1000 RPM, that is 37% of nominal speed, and the
motor would be r
On Fri, 8/23/13, Greg Bentzinger wrote:
Subject: Re: [Emc-users] BP Knee Mill Spindle
To: emc-users@lists.sourceforge.net
Date: Friday, August 23, 2013, 7:30 PM
John;
BP was pushing the edge with the 4200 rpm top speed. When
you look up bearing specs most consider 4000 rpm max
John;
BP was pushing the edge with the 4200 rpm top speed. When you look up bearing
specs most consider 4000 rpm max continuous under load. If your head is truely
that noisy then something else isn't right - cutting air that machine should
just purr with the loudest noise being the motors fan.
On Fri, 8/23/13, John Thornton wrote:
Subject: Re: [Emc-users] BP Knee Mill Spindle
To: "Enhanced Machine Controller (EMC)"
Date: Friday, August 23, 2013, 11:21 AM
Oh to answer your question:
1 to get a quieter drive, the vari-speed is very noisy even with new
everything.
1
On Fri, 8/23/13, John Thornton wrote:
On mine the motor doesn't like going over 1800 RPM so I have
to change
the vari-speed from 500 at 30 Hz to 2000 at 60Hz to drill.
JT
Put a stepper motor on the speed crank and have the software setup to wait for
the target speed to be reached. Like
Oh to answer your question:
1 to get a quieter drive, the vari-speed is very noisy even with new
everything.
1a the vari-speed drive goes from 500-4200 RPM but over 2k you can't
stand to be in the shop with it.
2 to be able to set my RPM from 175-5200 with S in g code.
3 did I mention how noisy t
On 8/23/2013 10:44 AM, Jon Elson wrote:
> John Thornton wrote:
>> I have a BP Series 1 knee mill with an Anilam 3 axis CNC conversion and
>> a Kwik Switch spindle on it that now runs with LinuxCNC. I have a
>> GS2-23PO 3hp AC drive for the spindle. I recently added a 2500 line
>> encoder to the sp
John Thornton wrote:
> I have a BP Series 1 knee mill with an Anilam 3 axis CNC conversion and
> a Kwik Switch spindle on it that now runs with LinuxCNC. I have a
> GS2-23PO 3hp AC drive for the spindle. I recently added a 2500 line
> encoder to the spindle and can now rigid tap.
>
> http://www.
On 23 August 2013 14:25, John Thornton wrote:
> The first motor I looked at was a 2 pole but after more looking it has
> 1/2 the torque of a 4 pole motor. Both of those motors are on the wrong
> side of the pond for me.
Yes, but as everything in the UK costs the same in pounds as the same
thing d
The first motor I looked at was a 2 pole but after more looking it has
1/2 the torque of a 4 pole motor. Both of those motors are on the wrong
side of the pond for me.
JT
On 8/23/2013 8:15 AM, Viesturs Lācis wrote:
> 2013/8/23 andy pugh
>
>> On 23 August 2013 13:34, John Thornton wrote:
>>
>>
$440 for the 2 pole and $400 for the 4 pole.
I've had some second thoughts on the 2 pole motor as it has 1/2 the
torque of the 4 pole. If I gear the 4 pole 1:1 my RPM range would be 175
to 5400 and have constant HP up to 2600. The 4 pole (1750 RPM at full
load) motor has 6 lb-ft of torque at fu
2013/8/23 andy pugh
> On 23 August 2013 13:34, John Thornton wrote:
>
> > The thought came to me yesterday after remembering my buddy had one of
> > his BP's converted to a timing belt drive and a VFD for speed control. I
> > found a 2 hp 3600 RPM inverter duty motor for $440 at automation direc
On 23 August 2013 13:34, John Thornton wrote:
> The thought came to me yesterday after remembering my buddy had one of
> his BP's converted to a timing belt drive and a VFD for speed control. I
> found a 2 hp 3600 RPM inverter duty motor for $440 at automation direct.
How much? !
My first thoug
I have a BP Series 1 knee mill with an Anilam 3 axis CNC conversion and
a Kwik Switch spindle on it that now runs with LinuxCNC. I have a
GS2-23PO 3hp AC drive for the spindle. I recently added a 2500 line
encoder to the spindle and can now rigid tap.
http://www.automationdirect.com/adc/Shoppin
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