Messages

1

General Mach Discussion / Re: Issue with g3 command incremental

« on: October 16, 2010, 07:15:22 AM »

These ones: http://www.mechapro.de/hem545.html  ...german... ttl/optocoupler, powerd with 50VDC, good for 5Amps. Powering 1 Stepper each.
! for the y, one for z and 2 for the x. Thru a relais matrix I can switch between 2 mills.
I use those for years now. Never had any issue.

Hope my Multimeterscope is good enough  otherwise I will have to carry my big one down to the basement. will take a while....

2

General Mach Discussion / Re: Issue with g3 command incremental

« on: October 16, 2010, 04:29:25 AM »

I got 2 motors driving the X-axis in parallel.
It feels like they are shivering, they are not locked as if the axis stands still, but they are also not moving.
Will try to reduce acceleration....
Just created another file and will try it out.
If that does not work either, I will connect  scope.
Strange thing is that it always happens at the same command

3

General Mach Discussion / Re: Issue with g3 command incremental

« on: October 15, 2010, 04:05:22 PM »

just cut out a few pieces using various files. changed feedrate up and down. Not any issue.
Did the driver test: excellent.
It#s gotta be something with the file(arc)

4

General Mach Discussion / Re: Issue with g3 command incremental

« on: October 15, 2010, 11:39:37 AM »

Uupos, forgot attachment

5

General Mach Discussion / Re: Issue with g3 command incremental

« on: October 15, 2010, 11:38:22 AM »

Just tried this file w/o any issues at the 300mm/min from the file and overuled to 500mm/min. Not any issue.
Im placing the detail in the same area +-1cm where the error occurs, to ensure that it is not caused by a machine error (spindle bent or anything like that...)

6

General Mach Discussion / Re: Issue with g3 command incremental

« on: October 15, 2010, 09:55:37 AM »

Sorry, took me a while as I was travelling.
The IJ and distance mode are the same as yours.
I let my cam sw create the nc file also in "convert to points" method, to have the option to mill w and w/o G2/3s.
I also went to the newest version of MACH.
My x axis speed is set to 750mm/min. When I use the arrow buttons on my keyboard the axis moves at 750, sometimes a little (745+-) slower.
I can drive it manually all over the place with no issues. Y axis is set to 400 or so, no issues here too.
Now I am loading the file I posted (with g3 and 450mm feed rate). It happens always at the same command: X-axis DRO is counting, axis does not move. When I touch the motors, I can feel IT SEEMS TO GET PULSES !!
Now I hit ESC. Machine stops. I reset emergency and can (arrow-keys) move x with 750, y with 400, no problem.
I even can, and that's crazy, take another file which mills a circle (G's !!!" at the same machine position at the same speed. No problem.
Now I take the "no G2/3"-file. Program runs...machine gets stuck close to the same position where it hangs up with the G3 file.
When I am forcing the feedrate down to 160mm...no problem....except time :-(

Processor is a 1.6GHz ATOM, XP with absolutely anyting else turned off.

7

General Mach Discussion / Re: Issue with g3 command incremental

« on: October 07, 2010, 02:26:12 AM »

Hm...i was playing around with IJ and Distance mode setting, because I thought the issue comes from them.
I was also changing these settings in my cam-software, to figure out if the issue is caused by the cam sw or by MACH at first.
Changing the settings in MACH seems to have immediate effect. But anyway ... none of the options was working.
Propably I forgot to save the setting last time I shut down MACH.
I will make sure to take the file I posted and set DistanceMode to Abs and IJ to Inc. But if I remember correctly, this is default, which was my first try.

I am currently running version .29 of MACH, and will try to move to .42 today.
Will let you know asap. Great help from your side btw :-)

8

General Mach Discussion / Re: Issue with g3 command incremental

« on: October 06, 2010, 10:38:18 AM »

Sorry, but it took me a while to get to the machine.
Here you go with the file

9

General Mach Discussion / Re: Issue with g3 command incremental

« on: October 05, 2010, 01:17:08 PM »

Here is the command that causes the issue:

G1 X-86.0442 Y135.4873
G3 X-86.2276 I-0.092 J-2.9986
G2 X-1462.342 Y141.4518 I-602.4365 J19757.2383
G3 X-1462.4945 Y141.4538 I-0.1174 J-2.9977
G1 X-1476.228 Y141.2933

It is the third line.
As said, x DRO is counting, x Axis does not move.

10

General Mach Discussion / Issue with g3 command incremental

« on: October 05, 2010, 12:18:22 PM »

Hi all,

There seems to be a problem with handling the attached gcode at line 245.
This should create a rather huge arc (outline of a ski btw). What happens is that the x-gauge counts correctly (you see the value continously properly counting up)
but the x-axis does not move. Distance mode = Abs, IJ Mode = Inc.

guess it might come from this high value of J...but this should not be an issue

thanks for any help