Messages

1

General Mach Discussion / Re: Losing Z Height in Mid Operation

« on: November 02, 2013, 09:27:49 PM »

No, I replaced with the same size.  I tried to get one with more torque, but it would fit.

2

General Mach Discussion / Re: Losing Z Height in Mid Operation

« on: November 02, 2013, 05:57:23 PM »

I finally solved my problem by replacing the Stepper Motor.  Gary

3

General Mach Discussion / Re: Losing Z Height in Mid Operation

« on: October 25, 2013, 09:43:27 AM »

I tighten the nut on the screw a couple of turns to take the slop out, which was about 2 mm, but I didn't see any change.  Maybe I should loosen it to see if that helps.  I don't know what USB board, it was installed by the factory.  It is a Chinese machine.  I did insist they configure it as a USB connection, because I don't have a serial port on my laptop computer.  Thinking it might be my laptop, I tried running it from a Desktop, but it didn't change anything.

4

General Mach Discussion / Losing Z Height in Mid Operation

« on: October 25, 2013, 08:54:48 AM »

I bought my CNC router with Mach 3 configured with a USB connection instead of a Serial.  Recently I started dropping Z height in Mid Operation.  Checking bearings, slop in the screw, connections, and anything else I could think of is good.  I'm running in a metric configuration, and when I calibrate it sets at 355 "steps per". Operation starts out good, but after several minutes Z height will drop 5 or 6 mm. The manufacture suggested changing the Steps Per to 160.  At that configuration, things seem to be working better, but when I do a profile cut, the depth only reaches 55% of where it should go.  Anybody think that having it with a USB setup might be my problem or is there any other advice?

5

General Mach Discussion / Re: Program E-Stop in middle of jobs

« on: August 06, 2008, 11:04:41 PM »

I have the same problem, the e-stop in the middle of the job. Sometimes it will go 2 or 3 minutes, then 15 or 16 minutes, so forth.  After checking the history,below the Reset button,  it would always stop after the comment "Too Fast For Pulley..using Max.  The problem is, I have a CNC Router with direct drive, no pulleys.  In the spindle pulley setup under the config tab, I tried various settings on the max speed, setting it very high (30,000 rpm) to Zero.  Increasing it to the higher number increased the time before shutdown to about 25 to 30 minutes.  I'm still working on the problem.  I hope I can figure it out before I pull all my hair out.  If anybody has any other suggestions, I would appreciate it.