Hello Guest it is January 18, 2020, 06:44:35 PM

Author Topic: NEW WITH MACH, HAVING ISSUES  (Read 10065 times)

0 Members and 1 Guest are viewing this topic.

NEW WITH MACH, HAVING ISSUES
« on: July 28, 2012, 01:12:18 PM »
have a new 3020 cnc
small cheap chinese machine
and running into an issue with my x axis will shift on the second pass of a contour
does anyone know where im going wrong or something i should try
im very good with mastercam witch is what im programming with, same programs ran on other machines never failed
im just new with this diy hobby stuff and im certain theres somthing im doing wrong with mach, seing how ive only been using it a week
got the motors tuned
the image is of a contour cut, no roughing then finishing and that shot is of the second pass, ive tried cutting acceleration of motors in half
ive done .1 depths of cut to .025 per pass

any and all help is greatly apprecitated

Offline Hal

*
  •  60 60
    • View Profile
Re: NEW WITH MACH, HAVING ISSUES
« Reply #1 on: July 28, 2012, 01:36:28 PM »
How does the driver test look? Is the X axis the only one not repeating? Have you optimised the computer for Mach?

Run the driver test in the Mach folder.
Check the computer for Quicktime and such listed in the optimiser.
Check the axis for any binding.
check the feed rates in the program. I had the same problem and was over feeding my setup.
Any cutter comp in the program?

Hal
Re: NEW WITH MACH, HAVING ISSUES
« Reply #2 on: July 28, 2012, 01:40:51 PM »
wow thats alot, never knew about a driver test
will do that
dont know about the quicktime
no binding i cleared that before ever setting it up with mach
im only doing about 10ipm and if it cant run at that speed im in trouble
no cutter comp
also another thing i forgot to ask about is that

will let me offset my xyz or use cutter comp, ive been looking but not finding
Re: NEW WITH MACH, HAVING ISSUES
« Reply #3 on: July 28, 2012, 01:46:00 PM »
okay the driver test will not start
and i have not optimized the computer for mach, what will that take

Offline Hal

*
  •  60 60
    • View Profile
Re: NEW WITH MACH, HAVING ISSUES
« Reply #4 on: July 28, 2012, 02:09:35 PM »
Fisrt issue is the driver test. This is the interface between the Mach3 and printer port. I went through three computer before I had one to run the driver test correctly.

What operating system are you running?

There is a .txt file that has the directions for optimizing the computer. Laptops have issues with Mach3.
Re: NEW WITH MACH, HAVING ISSUES
« Reply #5 on: July 28, 2012, 02:19:06 PM »
its windows 7
and a desktop

Offline Hal

*
  •  60 60
    • View Profile
Re: NEW WITH MACH, HAVING ISSUES
« Reply #6 on: July 28, 2012, 03:14:13 PM »
"Run As Administrator" needs to be set for the Driver Test. The Running Under Vista thread has several topics for this issue. In the DOWNLOADS and under MACH3 is a listing for Vista and farther down is the Optimising file for XP, but some programs may apply. Read both files before starting.

Issues in Vista and Win7 are close to the same.

For my mill I ended up with an XP PRO refurbish desktop.
Re: NEW WITH MACH, HAVING ISSUES
« Reply #7 on: July 28, 2012, 03:26:35 PM »
driver test says pulsing too fast
Re: NEW WITH MACH, HAVING ISSUES
« Reply #8 on: July 28, 2012, 03:48:39 PM »
a second and third test says system excellent

Offline Hal

*
  •  60 60
    • View Profile
Re: NEW WITH MACH, HAVING ISSUES
« Reply #9 on: July 28, 2012, 04:02:53 PM »
How does the graph look. Flat as a pancake or shakey like an eathquake? Flatter is better.

Try setting X and Y zeros. Without a tool, run the program. Stop after the rough passes and recheck the X and Y.
Run the finish pass and recheck positions.

My Sherline with a Flashcut control would loose steps if I would program a speed over the motor tuning speed. I changed to a 540 Gecko. Several post have had the Blue box replaced with a different control system.