Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: plastics4 on January 31, 2007, 11:02:38 AM
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Has any body got any thoughts on this one...we are looking at using artcam insignia with mach3, The guy from artcam has been over and sorted out the post processor to work with mach3 (forgive me if nothing makes sense from now on as i really havent got a clue whats going on) when the machine goes to cut a simple slot the cutter ramps down into the cut even though all ramping has been switched off, the g code isnt telling it to ramp down, the displays shows that the tool path doesnt ramp down but it still does - well it had both of us scratching our heads !!! ??? ???
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Post the start of your code where this happens but it sounds like your machine is starting to move in x or y direction before the z has reached the correct depth. The post processor may need re-adjusting.
Is the z move listed in the g-code before or after the x y moves?
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One other thing, how is your material set up in artcam? I have sent you a pm.
Brett
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I will get that lot posted but ive just had a word with the artcam guy who showed me the live simulation of the toolpath's being cut and everything is how it should be, i.e. travels along, stops, goes down, stops and cuts the slot then comes back out with no ramping....Ill get the g code up here if i can
Cheers
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In config, safe Z setup. Do you have allow safe z moves checked?
Brett
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Here is the G code
N0 G21
N10 G40 G90
N20 F1
N30 M6 T1
N40 G43 H1
N50 M04 S0
N60 G00X0.0Y0.0
N70 G00 Z10.0
N80 G0X27.5Y207.2Z2.0
N90 G1Z-5.0F600.0
N100 G1X27.5Y207.3Z-5.0F600.0
N110 Y209.3
N120 X27.4Y209.3
N130 Y207.3
N140 G0Z2.0
N150 G0X0.0Y0.0Z10.0
N160 G00X0.0Y0.0
N170 M05
N180 G49
N190 M05 M30
I Just looked in config and i cant find anything about safe Z setup ( told you i dont have a clue ) ??? ???
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You do have rapid move in that code. The G0s are rapid comands. Did you get the personal message I sent you?
Brett
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Think Brett is correct you have not set your material up correctly. Looks like you have a top offset of 10mm in artcam, assuming line 80 is the ramp move that cuts into your material & you are zeroed to material surface
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I don't think this has anything to do with your problem but here is a screen shot to help.
Brett
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I think this is where your problem is.
Brett
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Hey
Well just to make life more difficult, we have version 1.84 of mach3 and in the config dropdown there is no referance to safe z setup....and in the material setup in artcam theres no option to have a top offset but i had a thought last night, would it have anything to do with the tool start depth for example it starts at 0 and tool finishes the cut at -5 so somewhere its got to go from 0 to -5 and in a slot 8mm long i guess it will have to ramp down to do this (maybe its a numb thought but !!!)
Cheers
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If i remember correctly for version 1.84 you will find your safe z height on the diagnostic's page
Your problem has to be in your material set up as Brett said.
when you look at your g-code
N60 G00X0.0Y0.0 - moves to x & Y zero but not Z
N70 G00 Z10.0 - moves to +10mm in Z
N80 G0X27.5Y207.2Z2.0 - at the same time moves to this position while moving tothe +10mm Z and this is where it appears to give you the ramping cut you don't want.
If the +10mm is in your material then you didn't zero to the top of material or if zeroed from the top of table you have an offset in your mateial set up
hope that's a little clearer than mud, call your Artcam rep he sholuld be able to walk you through this one
The mateial set up page Brett posted is in AC pro but you should have one similar in Insigna
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Hello to all,
I got a similar problem and don't have a clue also,when a file is loaded to Mach every thing looks good except at the start the Z axis goes up about 3-4 " and comes back about 1" and starts to cut air and is no where close to the top of the material,I have to adjust manually to get it to cut but is not accurate.I check the Zsafe move and looks fine.Any ideas? Thank You for the help,Marco.
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If everything looks good in your file then I have to ask if are you zeroing your Z axis before running the file? what is your safe Z height set to?
You might post the first few lines of your code.
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It looks like a setting problem to me, the code looks OK, a few funny bits in it but nothing that's going to cause a problem.
This is what its doing on each line so you can see if that's what it dose on the machine.
Graham.
N0 G21 (set to metric)
N10 G40 G90 (clear compensation and set to absolute)
N20 F1 (set feed rate)
N30 M6 T1 (select tool 1)
N40 G43 H1 (set height offset)
N50 M04 S0 (run spindle)
N60 G00X0.0Y0.0 (move X & Y to zero)
N70 G00 Z10.0 (move Z to 10mm above material top face)
N80 G0X27.5Y207.2Z2.0 (move X & Y to start point of slot and Z to 2mm above job)
N90 G1Z-5.0F600.0 (feed Z 5mm into job)
N100 G1X27.5Y207.3Z-5.0F600.0 (feed tool around slot)
N110 Y209.3
N120 X27.4Y209.3
N130 Y207.3
N140 G0Z2.0 (rapid out of job to 2mm)
N150 G0X0.0Y0.0Z10.0 (rapid to X0 Y0 and z 10mm above job)
N160 G00X0.0Y0.0 (Move same as above ?)
N170 M05 (stop spindle)
N180 G49 (cancel offsets)
N190 M05 M30 (stop spindle again and end program)
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Hello Gary,
I do a reference of all of the axis and after that go to the edge of the material and zero all of the axis, My Z safe is set at .2
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When you are in Artcam you should have an option of where you set you zeros. I susspect you are ref, off of the bottom of you material rater than the top.
Brett
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hello to all,
No I check that part and the Z axis is set at the top of the material.
Thank You,Marco.
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What is in the height offset 1, it should have zero in the Z height.
or
Remove the lines N30 & N40 to kill the offsets.
Graham.
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Graham,
I believe your referencing the file posted by Plastic4 and not Marco (rem300wm)
Marco post your file and I'm sure someone will be able to help you further if we can see the code to help trouble shoot.
G.
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Hello to all,
Here is some of the code of My job.Thank You,Marco. ??? ???
( Mach2/3 Postprocessor )
N10G00G20G17G20G90G40G49G80
N20G70
N30T3M06
N40G00G43Z0.0100H3
N50S12000M03
N60G94
N70X0.0000Y0.0000F100.0
N80G00X3.2601Y8.4635Z0.0100
N90G01Z-0.1250F50.0
N100G01X3.3331Y8.4630F100.0
N110X3.4822Y8.4592
N120X3.9458Y8.4206
N130X3.9023Y8.4368
N140X3.8477Y8.4542
N150X3.7922Y8.4690
N160X3.7358Y8.4811
N170X3.6788Y8.4906
N180X3.6213Y8.4973
N190X3.5637Y8.5012
N200X3.5060Y8.5024
N210X3.4485Y8.5008
N220X3.3914Y8.4964
N230X3.3348Y8.4894
N240X3.2982Y8.4831
N250X3.2855Y8.4771
N260X3.2601Y8.4635
N270G00Z0.0100
N280G00X4.0588Y1.8158
N290G01Z-0.1250F50.0
N300G01X4.0778Y1.8077F100.0
N310X4.0885Y1.8025
N320X4.0963Y1.8015
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Hi Marco,
If you are sure your setting of the datums is correct then all I can think is that maybe you have a value in the tool length offset for offset number 3.
Also take out the bits of the code I have marked red and try again.
Graham.
N10G00G20G17G20G90G40G49G80
N20G70
N30T3M06
N40G00G43Z0.0100H3
N50S12000M03
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Hello Graham,
More questions :-(
Where do I look for the setting for the offset?
I will edit the code and try again,Thank You,Marco.