G18 canned cycle is not possible on lathe
- microsprintbuilder
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04 Aug 2013 02:12 #37381
by microsprintbuilder
G18 canned cycle is not possible on lathe was created by microsprintbuilder
Anyone ran into this.
On my lathe I can write a G83 peck drill code in MDI and it works just fine but when I put it into a program and run it I get an error "G18 canned cycle is not possible on a machine without y axis". Anyone know how to fix this?
On my lathe I can write a G83 peck drill code in MDI and it works just fine but when I put it into a program and run it I get an error "G18 canned cycle is not possible on a machine without y axis". Anyone know how to fix this?
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04 Aug 2013 03:53 - 04 Aug 2013 03:54 #37384
by BigJohnT
Replied by BigJohnT on topic G18 canned cycle is not possible on lathe
What is the current plane when you try and run the G83? Because this is a mill subroutine it only works with G17 IIRC.
JT
JT
Last edit: 04 Aug 2013 03:54 by BigJohnT.
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04 Aug 2013 14:41 #37388
by Rick G
Replied by Rick G on topic G18 canned cycle is not possible on lathe
As John said G83 will not work with G18 ZX plane.
Your program probably sets the active plane as G18 which is normal for a lathe.
But if your program ends with a M2 the M2 sets the machine at the default G17 XY plane at exit.
So if you entered the G83 from the MDI after the program exits it may work.
You could try editing your program to add a G17 before the G83 then back to G18 after.
Rick G
Your program probably sets the active plane as G18 which is normal for a lathe.
But if your program ends with a M2 the M2 sets the machine at the default G17 XY plane at exit.
So if you entered the G83 from the MDI after the program exits it may work.
You could try editing your program to add a G17 before the G83 then back to G18 after.
Rick G
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06 Aug 2013 05:28 #37424
by microsprintbuilder
Replied by microsprintbuilder on topic G18 canned cycle is not possible on lathe
Hey that worked, I've changed my post for my cam software to do it automatically. Thanks!
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06 Aug 2013 16:42 #37427
by andypugh
The reason for this is that the canned cycles allow an in-plane move and the drilling/boring moves are perpendicular to that plane.
(Actually, I don't think that they work in any plane other than XY, but I could be wrong about that part).
To use the canned cycles you need to be in a plane perpendicular to your drilling direction.
This is probably overly restrictive, but then it is probably better to flag an error than make an assumption and do something potentially unexpected.
(there is no "undelete" for metal)
Replied by andypugh on topic G18 canned cycle is not possible on lathe
As John said G83 will not work with G18 ZX plane.
The reason for this is that the canned cycles allow an in-plane move and the drilling/boring moves are perpendicular to that plane.
(Actually, I don't think that they work in any plane other than XY, but I could be wrong about that part).
To use the canned cycles you need to be in a plane perpendicular to your drilling direction.
This is probably overly restrictive, but then it is probably better to flag an error than make an assumption and do something potentially unexpected.
(there is no "undelete" for metal)
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06 Aug 2013 17:32 #37428
by Rick G
Replied by Rick G on topic G18 canned cycle is not possible on lathe
Glad you got it sorted out.
Rick G
Rick G
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06 Aug 2013 17:45 #37430
by cncbasher
Replied by cncbasher on topic G18 canned cycle is not possible on lathe
should you not be using G74 for peck drilling on lathe , that's of course if Lcnc covers this of course
after all it is a basic process
after all it is a basic process
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06 Aug 2013 19:00 #37432
by BigJohnT
Replied by BigJohnT on topic G18 canned cycle is not possible on lathe
No G74 in LinuxCNC.
JT
JT
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06 Aug 2013 19:33 #37439
by cncbasher
that's what I thought JT , but it should be a worthwhile addition ,we should not be missing some of the basic elements of machining such as this
Replied by cncbasher on topic G18 canned cycle is not possible on lathe
No G74 in LinuxCNC.
JT
that's what I thought JT , but it should be a worthwhile addition ,we should not be missing some of the basic elements of machining such as this
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06 Aug 2013 20:52 #37447
by BigJohnT
Now we just need to find a champion to program it. It is beyond my guesspertice level.
JT
Replied by BigJohnT on topic G18 canned cycle is not possible on lathe
No G74 in LinuxCNC.
JT
that's what I thought JT , but it should be a worthwhile addition ,we should not be missing some of the basic elements of machining such as this
Now we just need to find a champion to program it. It is beyond my guesspertice level.
JT
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