Re: [Emc-users] Stepper Motors/Drives

2016-01-15 Thread andy pugh
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.

Re: [Emc-users] Stepper Motors/Drives

2016-01-14 Thread John Dammeyer
e Controller (EMC) > Subject: Re: [Emc-users] Stepper Motors/Drives > > > On 14 January 2016 at 03:32, Gregg Eshelman <g_ala...@yahoo.com> wrote: > > Got any pics of yours? where are you located? > > https://picasaweb.google.com/108164504656404380542/CNCUnsort

Re: [Emc-users] Stepper Motors/Drives

2016-01-14 Thread andy pugh
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-14 Thread Gregg Eshelman
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-14 Thread John Dammeyer
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-14 Thread andy pugh
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread andy pugh
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread John Dammeyer
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 Dammeyer <jo..

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread andy pugh
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.

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread John Dammeyer
> -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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread Lester Caine
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread andy pugh
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread andy pugh
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread Lester Caine
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread John Dammeyer
C) > 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 1

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread Gregg Eshelman
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread Bruce Layne
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread andy pugh
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread Karlsson & Wang
> 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,)

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread Jon Elson
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread John Dammeyer
Hi Rick, This is a question that is asked all the time on the E-Leadscrew group. I have a South Bend Heavy 10L with a taper attachment so I haven't yet gotten around to powering the X axis. I have a 280 oz-in stepper through a 2:1 belt drive on the Z in order to be able to cut metric threads

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread Gene Heskett
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

Re: [Emc-users] Stepper Motors/Drives

2016-01-13 Thread Wayde Allen
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.