Messages

7191

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.

7192

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.

7193

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.

7194

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.

7195

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.

7196

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.

7197

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.

7198

General Mach Discussion / Re: Help! Vibrating motors and hotwire!!

« on: March 05, 2011, 03:10:39 AM »

Blake,

It could be a resolution issue with the software you are using (a curves created with 6 straight lines is a bit jerky compared with the same curve created with 60 straight lines) perhaps not set up correctly ?
Try another software to generate some code and see if you get the same results.

Tweakie.

7199

General Mach Discussion / Re: Mach 3 Upgrade issue - for a frustrated Aussie

« on: March 05, 2011, 03:00:00 AM »

G'day Lance,

If your spindle is 3 phase then you will have 3 wires (not including any earth connection) running from your inverter to the spindle. Swap any two of these wires and the spindle will rotate in the other direction.

Tweakie.

7200

General Mach Discussion / Re: would like some advice

« on: March 05, 2011, 02:55:03 AM »

Everybody will have their own views on this one but here is my 2 cents.

This is pretty much a trial and error thing which will depend on your steppers, their driver circuits and the amount of loading each axis puts on the stepper in it's resistance to movement.
I increase the Velocity and Acceleration to the maximum figure that the motors will sustain then reduce the velocity by some 20% or so and then reduce acceleration so the machine does not jerk or rock (it is on castors). Then carry out some practical tests with GCode to make sure everything is reliable, does not stall under load or miss steps etc.
I am more concerned with accuracy and reliability than I am with speed so I always opt for the lower settings.

Tweakie.