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Unread 11-04-2014, 02:20
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MissRaptor MissRaptor is offline
Master CADster
AKA: Melanie
FRC #2052 (KnightKrawler)
Team Role: College Student
 
Join Date: Feb 2013
Rookie Year: 2010
Location: Minnesota
Posts: 12
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Re: Non circular arcs in G-code

Quote:
Originally Posted by bs7280 View Post
Hello all!

I am trying to learn how to use G-code more and I am making software for our team that will generate G-code for us (to put it simply). One thing that I am trying to do is make non circular arcs. I have figured how to make standard curves with G02 and G03 but I was wondering if it was possible to cut a non circular arc, such as an ellipse or a parabola.

Thanks, 3734
Hey! I was part of a technical school for awhile and did precision machining, so along with manual machining I had started to learn CNC. For sheer programming in theory you could brute force it but that'd be a ton of lines in your code. (So literally putting in tons and tons of coordinates corresponding with the desired shape.) Or something along that train of thought. Depending on how much your team uses things needing g-code I would heavily recommend MasterCAM (This being if you use g-code A TON(I can't find an actual price anywhere but not cheap, and sadly student edition doesn't post. grrr. But it may give you the coordinates you need as effectively. But then you could use a few programs for that. Sigh why thou world cost so much of the money) I don't know about discounts but it's an investment.. not a free program but extrememly extrememly useful) though. It's got a very CAD like feel to it, however it also allows you to create a program and post G-Code all ready to go. It takes a bit to get used to and you still need to be careful about your program (Dry runs and single step) for the initial runs of it, but in all it's a VERY convenient software.

If you had any interest in it I would always be happy to help you understand the program or answer any questions you have about it at all! I'm a bit rusty on my g-code but I would love to refresh my memory and assist in any way I could if you'd like any help!
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Last edited by MissRaptor : 11-04-2014 at 02:30. Reason: Added the bottom part