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Chinese 6040 machine trouble cutting anything
« on: February 12, 2016, 07:43:22 PM »
Hi, thank you for looking.
I purchased a Chinese 6040 cnc router and for the past 4 months I have tried over and over again to cut a single piece of anything. I am at a complete loss and I don't know where else to turn to for help. I don't know any one that I could even pay for the help as I would if I had to. I have watched the help videos so many times and I have the machine set up according to the book and all the axis's operating like they should and I zero the Z and set the X and Y axis's as shown. All I ever get when I start cycle is it either just drills straight down or moves to position and does nothing and it doesn't cut.
I created a very simple circle pocket using cam software and even when I cycle start that, the bit just goes straight down. I am at a loss what to do next. I would gratefully appreciate your advise.

I have attached simple circle pocket I made but nothing works not even the sample gcode that comes with mach3.

Cheers,
Craig.

Code: [Select]
( Pocket 1 )
( File created: Wednesday February 10 2016 - 01:48 PM)
( for Mach2/3 from Vectric )
( Material Size)
( X= 150.000, Y= 150.000 ,Z= 12.000)
()
(Toolpaths used in this file:)
(Pocket 1)
(Tools used in this file: )
(1 = End Mill {0.125 inch})
N100G00G21G17G90G40G49G80
N110G71G91.1
N120T1M06
N130 (End Mill {0.125 inch})
N140G00G43Z20.000H1
N150S12000M03
N160(Toolpath:- Pocket 1)
N170()
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%
Re: Chinese 6040 machine trouble cutting anything
« Reply #1 on: February 12, 2016, 08:31:54 PM »
Well, the code looks to be OK.
Post the XML of your config. (rename it to something new or the forum wont accept it.
4 months ? ? ?
We gotta fix that !

Hang in there,
Russ
 
Re: Chinese 6040 machine trouble cutting anything
« Reply #2 on: February 12, 2016, 08:32:45 PM »
I suggest you start at a much less complex level  You are trying to do a circular pocket and using cutter compensation too (G43).  You need to verify your machine moves properly in the first place.  Position the tool someplace near the middle of the x y and z travels.  Use the zero button next to each DRO.  The machine should now use that as the reference. Go to the MDI screen.  Enter G0 X1, and hit enter. The machine should move the tool to the right 1 mm whether it is in incremental mode or absolute.  If you then try G0 X2 and it moves 2 more millimeters to show 3mm it is incremental mode, it added to the previous location. If it moves 1mm and shows 2mm it is abolute mode measured from the zero postition you set.  Try moving the Y and Z in the same way.  If it all works, and it the right direction and the correct distance then Mach 3 is likely set up okay.

Then try a program to cut around a rectangle, don't bother with tool compensation or any of that yet.  The moves if cutting material should leave a part undersized by the tool diameter.  If you use a Cam program you usually don't bother with tool diameter compensation (G42, G43) because the Cam program simply uses the tool diameter and calculates the correct offset.  It looks like you have vectrix outputting tool compensation and I would turn that off as it has lots of gotchas for the beginner.

Good luck
Re: Chinese 6040 machine trouble cutting anything
« Reply #3 on: February 13, 2016, 08:43:40 PM »
Thanks for the reply.

I went to the MDI part and did what you suggested. The X and Y axis's moved about 6 inches each way when I used that command. When I did it with the Z axis command, it moved down 1mm.

Thanks,
Craig.
Re: Chinese 6040 machine trouble cutting anything
« Reply #4 on: February 14, 2016, 12:54:57 PM »
Sounds like your steps per revolution settings are way off. If set correctly a move of 1 on a metric machine should be one millimeter. If you got 6 inches (150mm) you need to divide the steps per revolution by 150 or there abouts. Until you get this set correctly you won't be able to do any cutting.