Messages

41

General Mach Discussion / Re: Homing doesn't backup

« on: October 19, 2014, 12:59:08 PM »

There should be many on this here just do a search.

Glad I could help.

Ray

42

General Mach Discussion / Re: Homing doesn't backup

« on: October 19, 2014, 08:11:00 AM »

Usually this is caused by noise in the system.  Try adding 5000 to the "Debounce" on the general config page for starters to see if this helps.
Ray

43

General Mach Discussion / Re: Homing Problem - Axis do not consistently back off the switch

« on: September 22, 2014, 05:53:05 PM »

On the "General Configuration" screen on the right upper side you will see an area "Noise Rejection".  Enter 2000 in each of these boxes and try to Home again.  I believe you are getting noise from the system that is causing the problems.   
If it now works then back off the setting to 1000 and try again. 
You want this as low as possible but still high enough to stop nuisance tripping.

Ray

44

General Mach Discussion / Re: Bench Mill Conversion

« on: September 22, 2014, 05:37:11 PM »

On the settings screen on the left side there is a button for "Manual Limit Override" that will allow you to jog off a limit switch. 

As for the limit switches you have them set as most other people do but it is up to you how you want the machine to home. Many people home to the left lower corner of the bed as you have it now.

you are welcome
Ray

45

General Mach Discussion / Re: Bench Mill Conversion

« on: September 21, 2014, 04:28:55 PM »

If the glass scales is reading correctly then on the X axis motor connections swap the two leads on the "A" phase motor wires.  Move A+ to A- and A- to A+ on the driver.  You could also change the active state of the motor output with the same result.

If the scales are wrong then I don't know what to say other then read the docs from the scales to reverse them.

Ray


 

46

General Mach Discussion / Re: Slave axis going too slowly

« on: September 21, 2014, 04:18:55 PM »

Maybe the X axis is "Scaled" on the mach screen.

By switching the X and slave axis at the BOB you proved that Mach was sending out different pulses to the motors.  This eliminates all the hardware and electronics you are using.   It has to be something coming from Mach.

Ray

47

General Mach Discussion / Re: Slave axis going too slowly

« on: September 21, 2014, 03:18:36 PM »

"I swapped the connections coming from the BOB which swapped the problem to the other side."

The first to recheck is the Motor Tuning page.  Be sure everything is the same for X and A axis.
If you ever plan on adding a 4th axis I would suggest you do not use the A axis for slaving as Mach will only do 4th axis Radius Correct on the A axis.

Ray

48

General Mach Discussion / Re: Bench Mill Conversion

« on: September 21, 2014, 03:13:04 PM »

On a bench mill when the table is moving from right to left it is moving in a positive direction.
When the table is moving toward the operator it is moving in a positive direction.

The difference between the glass DRO and Machs DRO is either the steps are not calculated correctly or what you are seeing is backlash or some of both.  Don't expect to see exactly the same readouts in both.

I suspect you  have one of DROs reading backwards setup like above.

Hope it helps

Ray

49

General Mach Discussion / Re: Tangential knife problem rotating knife

« on: August 07, 2014, 07:40:08 PM »

Are you using the drag knife gadget in Aspire?

Ray

50

General Mach Discussion / Re: Tangential knife problem rotating knife

« on: August 07, 2014, 04:50:20 PM »

What do you have your "Swivel Depth" set at?

Try setting the swivel depth to a positive number above your work piece. Maybe 0.01

Ray