Messages

5901

General Mach Discussion / Re: Steppers and mach out of sync

« on: March 06, 2011, 03:00:24 AM »

to cut a long story short my x axis which is directly driven by a leadscrew will not consistently match up with the DRO readings in mach 3.

For this statement to be true the step pulses that Mach sends out are not being translated correctly by the stepper motor.

Have you thoroughly checked all the obvious mechanicals such as slipping coupling joining leadscrew to motor, tight or binding spots on the slides or leadscrew, anything loose etc etc ?

Tweakie.

5902

General Mach Discussion / Re: AutoZero Plate for Z Axis

« on: March 05, 2011, 12:05:32 PM »

Nicolas,

I am sure you will figure out the way to do it.

I'm off home now, I will check on your progress on Monday.

Tweakie.

5903

Show"N"Tell ( Your Machines) / Re: Thrown together coil winder ;)

« on: March 05, 2011, 11:47:21 AM »

Now that's what I call Scottish innovation. 

Tweakie.

5904

General Mach Discussion / Re: AutoZero Plate for Z Axis

« on: March 05, 2011, 11:42:35 AM »

Nicolas,

Just to be sure I have altered your diagram to reflect the same series connection of the switches although I am sure that you know what to do now anyway.

Tweakie.

5905

General Mach Discussion / Re: AutoZero Plate for Z Axis

« on: March 05, 2011, 11:30:34 AM »

No, good try but not right. See diagram.

Tweakie.

5906

General Mach Discussion / Re: Possible G2, G3 bug

« on: March 05, 2011, 10:52:10 AM »

Try changing the IJ Mode setting on the General Logic Configuration page and see if this cures it.

Tweakie.

5907

General Mach Discussion / Re: AutoZero Plate for Z Axis

« on: March 05, 2011, 10:42:23 AM »

You have incorrectly connected the two sets of limit switches in parallel.

Connect them in series.

GND-----switch----switch----switch----switch----PIN 11

Tweakie.

5908

General Mach Discussion / Re: axis problems

« on: March 05, 2011, 06:19:34 AM »

From reading all your postings on this it appears you have Mach set up in metric units not imperial.
May be a good idea to save your .xml and settings so you can always go back but start afresh re-install Mach and set it up in imperial units right from the start.

Tweakie.

5909

General Mach Discussion / Re: Steppers and mach out of sync

« on: March 05, 2011, 05:40:34 AM »

Sounds like it could be missing steps but it could be a lot of other things as well. 

When you jog your axis from one extreme to the other do the steppers make a nice smooth sound or do you sometimes get a little 'tick' or hesitation in the sound ?

Have you set your motor tuning velocity and acceleration to a comfortable figure well below the point at which the steppers stall ?

Tweakie.

5910

General Mach Discussion / Re: Video based rotation of board, based on Fiducials

« on: March 05, 2011, 03:37:30 AM »

For some reason the Set Rotation wizard did not get added in later versions but here is a link to Hoods download post http://www.machsupport.com/forum/index.php/topic,7779.msg49469.html#msg49469

Tweakie.