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Problem after calibration
« on: September 16, 2012, 08:16:11 PM »
Hi!
After calibration of my 6040 cnc, everything looks ok. Even if i do the calibration again, so I know my calibration is saved. But when I run a program they moving almost 1-4mm too tar, depending on the distance. I use recommended data for velocity(2000) and acceleration(200) step pulse( 10 )dir pulse (5) steps per(320 before calibrated). Anyone know how to solve my problem? Thanks!

Offline Hood

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Re: Problem after calibration
« Reply #1 on: September 17, 2012, 02:53:21 AM »
Attach your xml and some code and I will see if there is an issue with them.
Hood
Re: Problem after calibration
« Reply #2 on: September 17, 2012, 07:18:42 AM »
%
O1000
N10 G21 G90 G40 G17 G94 G00 G49 G80 G98 G64 G54
N20 T1 M6
N30 G0 X67.831 Y14.916 S70 M3
N40 G43 Z8.8 H1
N50 G1 Z-1.2 F300.
N60 X17.831 F100.
N70 G2 X16.243 Y16.504 I0 J1.588
N80 G1 Y506.504
N90 G2 X17.831 Y508.091 I1.588 J0
N100 G1 X67.831
N110 G2 X69.418 Y506.554 I0 J-1.587
N120 G1 X69.841 Y493.329
N130 X70.392 Y480.123
N140 X71.07 Y466.924
N150 X71.876 Y453.731
N160 X72.809 Y440.547
N170 X73.869 Y427.373
N180 X75.057 Y414.209
N190 X76.372 Y401.058
N200 X77.813 Y387.92
N210 X79.382 Y374.796
N220 X81.077 Y361.688
N230 X82.904 Y348.557
N240 X84.587 Y329.269
N250 X85.964 Y309.973
N260 X87.035 Y290.657
N270 X87.801 Y271.326
N280 X88.034 Y261.504
N290 X87.802 Y251.706
N300 X87.036 Y232.363
N310 X85.965 Y213.047
N320 X84.589 Y193.763
N330 X82.904 Y174.45
N340 X81.075 Y161.304
N350 X79.38 Y148.196
N360 X77.811 Y135.072
N370 X76.37 Y121.934
N380 X75.055 Y108.783
N390 X73.868 Y95.619
N400 X72.808 Y82.445
N410 X71.875 Y69.261
N420 X71.069 Y56.068
N430 X70.516 Y45.421
N440 X70.391 Y42.872
N450 X69.841 Y29.663
N460 X69.418 Y16.453
N470 Z8.8 F1000.
N480 M5
N490 M30
N500 M2
N510 M30
%

Offline Hood

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Re: Problem after calibration
« Reply #3 on: September 17, 2012, 08:03:43 AM »
What version of Mach are you using?
Hood
Re: Problem after calibration
« Reply #4 on: September 17, 2012, 08:34:16 AM »
I am using demo Version R1.84.000. Could that be the problem? Thanks

Offline Hood

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Re: Problem after calibration
« Reply #5 on: September 17, 2012, 08:57:45 AM »
That version is probably 6 years old so I would say upgrading would be a good idea.
XML seems to look fine however I would suggest you calculate your steps per unit and see if that helps out as the calibration will only be as accurate as you can measure.

Hood
Re: Problem after calibration
« Reply #6 on: September 21, 2012, 04:06:36 AM »
I tried the latest mach version. Same problem.  The calibration works well and is so accurate as I want and when tell mach3 to move 100 mm it moves 100+-0,03. But when I run a program for a  detail 100x100mm it is around 104 x 97. I tried to adjust the steps per unit out of this value with access. But after an hour I needed to change it again....  It is possible that the problem is in my control box? Maybe I should buy a gecko g540?