On 15 January 2016 at 01:04, Gregg Eshelman wrote:
>
> The catch is that those small screws tend to cost more than larger ones.
They are not so bad now:
http://www.zappautomation.co.uk/r08-025b1-rsw.html
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
On 1/14/2016 10:54 AM, John Dammeyer wrote:
> Very impressive that you were able to squeeze a ball screw under the cross
> slide. What diameter screw is that?
> Thanks for posting the pictures.
5/16" or 8mm can be just fit in by milling out the nut channel in the
saddle as wide as possible while
Very nice. Especially hearing the spindle speed up as the tool moves inward
to keep the same SFM.
John Dammeyer
> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: January-14-16 10:57 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc
On 14 January 2016 at 17:54, John Dammeyer wrote:
> Very impressive that you were able to squeeze a ball screw under the cross
> slide. What diameter screw is that?
8mm.
I thought it would be too small, but it has worked very well for years.
This is a good example of the lathe in action (It is
e Controller (EMC)
> Subject: Re: [Emc-users] Stepper Motors/Drives
>
>
> On 14 January 2016 at 03:32, Gregg Eshelman wrote:
> > Got any pics of yours? where are you located?
>
> https://picasaweb.google.com/108164504656404380542/CNCUnsorted#5611
> 904480713910226
&g
On 14 January 2016 at 03:32, Gregg Eshelman wrote:
> Got any pics of yours? where are you located?
https://picasaweb.google.com/108164504656404380542/CNCUnsorted#5611904480713910226
And also: http://www.cnczone.com/forums/mini-lathe/63621-cnc-2.html#post509784
I am in the UK.
--
atp
If you can
On 1/13/2016 12:28 PM, andy pugh wrote:
> On 13 January 2016 at 19:10, Lester Caine wrote:
>> On 13/01/16 18:52, andy pugh wrote:
>>> running at 28V
>> One of the problems with the early 'cheap' controllers was the 24V
>> supply. Simply replacing the driver with one capable of 45 or so volts
>
> I
On 13 January 2016 at 21:20, John Dammeyer wrote:
> What kind of driver (who's brand) and current setting? Micro-stepping? How
> many micro-steps per step?
http://www.motioncontrolproducts.com/drives/msd542-microstepping-drive.php?cat=2
Probably max current, 1/4 microstepping.
--
atp
If you
r (EMC)
> Subject: Re: [Emc-users] Stepper Motors/Drives
>
>
> On 13/01/16 21:20, John Dammeyer wrote:
> > 495 oz-in sounds kind of inflated for a size 23 motor.
> Only 3.5Nm ... we are seeing 4Nm NEMA23 now, but I've standardised on
> the 3Nm as an alternative to the
On 13/01/16 21:20, John Dammeyer wrote:
> 495 oz-in sounds kind of inflated for a size 23 motor.
Only 3.5Nm ... we are seeing 4Nm NEMA23 now, but I've standardised on
the 3Nm as an alternative to the 1.8Nm and it's only a few pounds more.
They need 4Amp drivers though, so the 3Amp limit of the NatS
d experience is priceless.
Thanks
John
> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: January-13-16 10:53 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Stepper Motors/Drives
>
>
> On 13 January 2016 at 18:41, John D
On 13 January 2016 at 19:10, Lester Caine wrote:
> On 13/01/16 18:52, andy pugh wrote:
>> running at 28V
> One of the problems with the early 'cheap' controllers was the 24V
> supply. Simply replacing the driver with one capable of 45 or so volts
I am sure that is the case. But I am long-past car
On 13/01/16 18:52, andy pugh wrote:
> running at 28V
One of the problems with the early 'cheap' controllers was the 24V
supply. Simply replacing the driver with one capable of 45 or so volts
made the stepper motor and hardware actually work reliably and I would
suspect you are subject to the same p
On 13 January 2016 at 18:41, John Dammeyer wrote:
>> My lathe does not seem to struggle at all with turning cuts within the
>> torque limit of the spindle, but stall immediately if trying to push a
>> drill > 10mm.
>>
> What are you running on the lead screw? Direct or belt drive? What size
> mo
> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> My stepper lathe is fine for normal turning and boring.
> However, one place where CNC can really make life easier on a lathe is
> peck-drilling holes with a drill held in the toolpost.
> My lathe does not seem to strug
On 13 January 2016 at 17:51, John Dammeyer wrote:
> So back to basics with a flex handle on the 1" socket and 1' away I started
> adding weight. Each oz would be 12 oz-in. As I recall it took very little
> to move it. Perhaps 50 oz-in.
My stepper lathe is fine for normal turning and boring.
On Wednesday 13 January 2016 11:34:04 andy pugh wrote:
> On 13 January 2016 at 16:09, Rick Lair wrote:
> > I have never dealt with stepper motors/drives and one of the guys at
> > our shop is kicking around converting and old 9x30 Southbend lathe
> > to cnc using Linuxcnc
>
> My Chinese 9x30 is O
544 4950
> -Original Message-
> From: Rick Lair [mailto:r...@superiorroll.com]
> Sent: January-13-16 8:10 AM
> To: Emc Users
> Subject: [Emc-users] Stepper Motors/Drives
>
>
> Hey Guys,
>
> I have never dealt with stepper motors/drives and one of the guys a
On 01/13/2016 10:09 AM, Rick Lair wrote:
> Hey Guys,
>
> I have never dealt with stepper motors/drives and one of the guys at our
> shop is kicking around converting and old 9x30 Southbend lathe to cnc
> using Linuxcnc. Are there any recommendations on maybe some kits with
> all the power stuff (mo
A number of the motor manufacturers Galil, Kollmorgen, et al have motor
sizing information information and tools on their web pages that may be
useful. I just had to lookup the Kollmorgen page to make certain that I'd
spelled that correctly so here is a link for them.
http://www.kollmorgen.com/en
I've had good luck with the stepper kits for CNC conversion on eBay,
from Wantai or Wantmotor or Longs Motors. These are Asian imports, but
the quality is good. You get the stepper motors, motor drives, DC power
supply to drive the motors and a parallel port card. You can buy kits
with as ma
On 13 January 2016 at 16:09, Rick Lair wrote:
> I have never dealt with stepper motors/drives and one of the guys at our
> shop is kicking around converting and old 9x30 Southbend lathe to cnc
> using Linuxcnc
My Chinese 9x30 is OK on the X with a 2.5Nm stepepr but a bit weak on
the Z with a 3.5
> Hey Guys,
>
> I have never dealt with stepper motors/drives and one of the guys at our
> shop is kicking around converting and old 9x30 Southbend lathe to cnc
> using Linuxcnc. Are there any recommendations on maybe some kits with
> all the power stuff (motors, power supplies, cables, etc,) t
Hey Guys,
I have never dealt with stepper motors/drives and one of the guys at our
shop is kicking around converting and old 9x30 Southbend lathe to cnc
using Linuxcnc. Are there any recommendations on maybe some kits with
all the power stuff (motors, power supplies, cables, etc,) that anybody
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