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Author Topic: Cutting wood quickly with Vectric cut2D?  (Read 7056 times)

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Cutting wood quickly with Vectric cut2D?
« on: January 20, 2010, 04:34:24 AM »
total newbie.. just got my zenbot today and got up and running.

I think i figured most things out, i am using Vectric cut2d, and i can make gcode and import into mach 3, and cut away and everything is good in the world... except it takes 4 hours to cut a 9 inch square out of a piece of wood.

What i would like to do however is cut much faster.. i played with the feed speed in tool settings but that doesnt help much.  i just spent an hour trying to figure out how to make things faster and am getting nowhere quick.. not sure if i set that in mach or cu2d.

any ideas? if i use the jog manually in mach 3 i can move those motors very quickly...

Offline Hood

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Re: Cutting wood quickly with Vectric cut2D?
« Reply #1 on: January 20, 2010, 04:53:16 AM »
It is the F word that controls the speed of an axis when doing a move, so your axis is at X0 and if your code has G1X10F100 it will move the X axis to 10 at a rate of 100. What that 10 and 100 will be will depend whether you are using metric or imperial units, so it will either be 10mm @ 100mm/min or 10inch at 100 inch per mm.
 This is all done in the G Code so it would be Vetric that you would set this up in as Mach will only do what the code is telling it to do, however you may have the FRO (Feed Rate Override) set low which would make things slow down, for example if it was set to 10% with the above code you would only move at 10 units/min instead of the 100.
Hood

Offline ger21

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Re: Cutting wood quickly with Vectric cut2D?
« Reply #2 on: January 20, 2010, 07:19:13 AM »
In other Vectric products, you set the feedrate by clicking "edit tool" after selecting a machining operation. I 've never used Cut2D, but it should be the same. The feedrate is assigned with the tool.
Gerry

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Re: Cutting wood quickly with Vectric cut2D?
« Reply #3 on: January 20, 2010, 12:09:04 PM »
thx ill try that out...
Re: Cutting wood quickly with Vectric cut2D?
« Reply #4 on: January 20, 2010, 11:15:49 PM »
Ok not much is happening... i can overide the feed rate but its still going slower than i think it should... im just cutting wood with a 35,000 RPM 1/8 cutter. 

I like Hoods suggestion modifiying the GCODE but the code for my project doesnt have an F value anywhere, here are the first couple of lines:

N0 G0 X0.000 Y0.000 Z6.025
N1 G0 X95.922 Y40.631 Z5.999
N2 g1 X95.922 Y40.631 Z-1.524
N3 g1 X95.874 Y40.967 Z-1.524

if I manually add an f value does that overide the feed rate?

Offline Hood

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Re: Cutting wood quickly with Vectric cut2D?
« Reply #5 on: January 21, 2010, 03:18:44 AM »
You could add the feedrate manually to the code or manually type into the feedrate DRO and it should move at that feedrate if none are specified but it is not the way to do things and you will be wanting different feedrates at different parts in your code, for exaple plunging will want to be slower than a feed cut.
Your CAM should be adding the feedrate, you really need to find out why it is not doing so.
Hood

Offline bowber

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Re: Cutting wood quickly with Vectric cut2D?
« Reply #6 on: January 21, 2010, 05:18:48 AM »
I use V Carve pro and I assume it will use the same tool selection system, as Ger21 said the feed is set with the tool so you have to edit the tool.
But you then need to recalculate the toolpaths, just altering the feed rate doesn't automaticly alter it in the calculated toolpath.

Below is a section of one of my Vcarve files.

( for Mach2/3 from Vectric )
( Material Size)
( X= 760.000, Y= 195.000 ,Z= 25.000)
()
(Toolpaths used in this file:)
(V-Carve 3)
(Tools used in this file: )
(1 = V-Bit {90 deg 12 mm})
N100G00G21G17G90G40G49G80
N110G71G91.1
N120T1M06
N130 (V-Bit {90 deg 12 mm})
N140G00G43Z15.000H1
N150S16000M03
N160(Toolpath:- V-Carve 3)
N170()
N180G94
N190X0.000Y0.000F600.0 feed rate set for G1 moves
N200G00X88.410Y87.363Z15.000
N210G00X88.410Y87.363Z3.000
N220G1X88.410Y87.363Z-3.000F200.0 plunge move
N230G1X87.652Y87.724Z-2.797F600.0 feed rate move
N240G1X87.024Y87.994Z-2.682
N250G1X86.402Y88.229Z-2.624
N260G1X85.782Y88.430Z-2.622
N270G1X85.157Y88.598Z-2.679
N280G1X84.646Y88.709Z-2.770
N290G1X84.071Y88.811Z-2.914
N300G1X83.969Y88.681Z-2.798



So you need to looking for feed moves like these.

Steve
Re: Cutting wood quickly with Vectric cut2D?
« Reply #7 on: January 21, 2010, 08:51:55 PM »
I'm still new to this, but if your code has no feed rate, then it's set to the default in Mach which on my computer is 6. If you click on the feedrate box you can set any value in there that you want. Try setting it to, say, 50 and try an air cut first to see if that has any affect.

Dave