Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: jonny quest on February 17, 2012, 11:21:28 PM
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I'm using a part that I've made before, but I just changed my toolpath strategy.
I started cutting it, didn't like it... so I re-did strategy. loaded new g-code... zeroed my dro... part starts cutting and it's off.
I stop it... look at my x,y it's x.634, y.634.
I go to MDI x0,y0 and table moves like 3 inches in both directions.
I restart computer, and it keeps doing same thing.
What's going on?
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Do you have machine coordinates turned on?
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They were off.
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It should be off right?
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part starts cutting and it's off.
What do you mean by that? Is it off on the toolpath screen or just from where you think it should be?
Hood
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It's only a 2" by 4" strip of aluminum. I zero part 1/4" in on a corner.
After I stop program, because it is not cutting in the path I want.. I then type x0,y0 in mdi box and machine goes about 2" away on both x,y from original x0,y0. Dro does show 0's
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Can you attach your xml.
Does the toolpath show it to be correct in relation to the work or does it show the toolpath way off by 2 inch?
Hood
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not allowing me to attach
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copy to your desktop and rename to jonnyquest.xml or something original as the forum will only allow a file name to be used once.
Hood
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this is error i get:
Sorry! There is already an attachment with the same filename as the one you tried to upload. Please rename the file and try again.
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as I said above, rename and attach :)
Hood
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this work?
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Go to General Config and enable enhanced pulsing and see if that helps.
Hood
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i did that and it seems to cut correctly now (just ran a few lines and it looks right)
but i hit my emergency stop in the middle.. like i did before... went to MDI... typed in my X0,Y0 it's now a lot closer... but still not my original start point.
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it had been working correctly previously, why would it stop working.. and i would need to check that?
here's my post processor i use
//MadCAM_POST_2003-12-10
*VERSION*
1.0_031210
*FILE_NAME*
Mach3_Gcode
*FILE_EXTENSION*
txt
*FILE_DEST*
c:\postfiles\
*FILTER*
0.001
*OUTPUT_WIDTH*
4
*OUTPUT_DECIMALS*
3
*SCALE_X*
1
*SCALE_Y*
1
*SCALE_Z*
1
*AXIS_1_CHAR*
X
*AXIS_2_CHAR*
Y
*AXIS_3_CHAR*
Z
*CUTTER_REFERENCE*
TIP
*RAPID*
G00"x""y""z"
*END_SECTION*
*RAPID_APPROACH*
"x""y""z"
*END_SECTION*
*RAPID_RETRACT*
G00"x""y""z"
*END_SECTION*
*APPROACH*
G01"x""y""z" F"feedz"
*END_SECTION*
*FIRST_CUT*
"x""y""z" F"feed"
*END_SECTION*
*CUT*
"x""y""z"
*END_SECTION*
*TOOL_CHANGE*
("toolname")
M6 T"toolnr"
M03 S"speed"
G01"zhome"
*END_SECTION*
*TOOL_STOP*
M5 M9
*END_SECTION*
*PROGRAM_START*
G00 G49 G40.1 G17 G80 G50 G90 G64
G20
*END_SECTION*
*PROGRAM_END*
M30
*END_SECTION*
*LINE_START_NUMBER*
1
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When you hit E-Stop or for that matter press Stop when axis are in motion you will almost certainly lose position. You need to rehome your machine after doing one of thesee. The proper procedure, if its not an emergency is to press feedhold and wait for motion to halt before pressing the Stop button.
Hood
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if i let the part run through, is now correct (kind of, my bit may have slipped in collet. dia are correct but z is off)
at end of program it stops at x3,y.234. now when i mdi x0,y0 it goes to original start 0,0 like it should. but only if i let program run all the way through.
checking that box, what did it do... and why did it change if it worked before?
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we were typing at same time. thank you for help and response.
can you answer why i had to check that box now?
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Enhanced pulsing attempts to make the pulses cleaner, if the pulses are not clean then the steppers/servos will not follow the code correctly as steps are missed. The default setting is to have that enabled and 99.9% of people should have it enabled.
Hood