Messages

1

General Mach Discussion / Re: Another Newbie 4th axis problem

« on: November 14, 2011, 07:20:27 PM »

THANKS TO ALL

Stepper drive was set at full step,  re-set it to 1/8 stepping and 4.4444 steps/degree. issue with slow down  an full rotations is gone, why 1/8 stepping and how did you arrive at the answer?

I miss understood the whole step concept, I used stepper motor @200 =360 degrees of rotation.

Seems that the old dog can learn new tricks again many thanks to all who helped
Richard

2

General Mach Discussion / Re: Another Newbie 4th axis problem

« on: November 14, 2011, 06:07:48 PM »

360 deg. * 1.8 = 200 physical steps, this seems logical to me sense i am using a direct drive from the stepper motor ?

3

General Mach Discussion / Another Newbie 4th axis problem

« on: November 14, 2011, 02:17:35 PM »

One year or so ago i purchased stepper motor package, i have been using the three axis x y z to date with no problems or failures using V carve pro and Mach3.

Several weeks ago i got the bug to set up a 4th axis, made 4 jaw chuck and live center with tailstock, activated the 4th drive with full steps of 200. the jaw chuck is direct drive w/ a flex coupling and several things don't add up!

 1. Getting full rotations on diameter with Simple Cylindrical Wrap  when drawing on 50% or half of the diameter. as seen on mach toolpath.
 
2. Setting full step, half,1/4, 1/8  does effect the rotations but still have the rotational thing of multiple rotations.

3. Wrapping around x or y in post processor in V carve.

4. Using radius for feed rate and A rotations enabled in mach and rotation diameter of .0001.

After cycle start x or y z crawl to a stand still when A axis is activated during machining operations.

 I have visited both mach and vector forums and at this point i am totally confused.


thanks in advance

tenhrdaz

4

General Mach Discussion / Re: newbie confused

« on: June 03, 2009, 09:46:53 AM »

After many hours of hair pulling and help from the forum, I finally got it !  turns out that two of my motor driver boards were bad.

called the company and sure enough they were bad got replacements while on vacation, installed them and ran a few test parts ...

many thanks to all who helped

5

General Mach Discussion / Re: newbie confused

« on: April 22, 2009, 09:45:37 AM »

After taking some time off i have tried to get a grip of my problem, i have checked  just about everything i can think of and that was mentioned to try.

i keep going back to the MDI  moving the X axis +.500 and end up at .500+ - .002 now going in the minus -.500 i get approx. .750 + - .002 can this happen on the x axis, i have checked the motor wiring, plugs and attachment to the bob.

i have tried auto set pulse under settings/steps per unit if i can figure out the x axis the rest should be easy to correct.

6

General Mach Discussion / Re: newbie confused

« on: March 02, 2009, 05:09:21 PM »

at this time it's set to 1/4 step and is 1:1

7

General Mach Discussion / Re: newbie confused

« on: February 27, 2009, 08:13:23 AM »

4x SideStep Bi-Polar Stepper Motor Driver
4x HT23-400-4 400ozin Stepper Motor
PBX-2 Parallel Port Breakout Board
1/2-10 acme lead w/antibacklash nuts

8

General Mach Discussion / Re: newbie confused

« on: February 26, 2009, 09:42:22 AM »

Ok
So  i have checked and things still seem abnormal would it help to post my xml config files to try and resolve my issues.

I have seen others post to resolve there issues

Richard

9

General Mach Discussion / Re: newbie confused

« on: February 23, 2009, 05:24:15 PM »

confusion after rechecking i don't think this can be but x1.0=.075 and x-1.0=6.0 will have to followup tomorrow morning off to thr mine

10

General Mach Discussion / Re: newbie confused

« on: February 23, 2009, 05:05:16 PM »

using mdi and a 1" travel indicator i requested a x.125 then a y.125 and z .050 all came out right