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Tool Talk Discussion Forum

CNC Learning

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David G

04-16-2018 07:43:17




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I had a good weekend learning G code, got the simple stuff down now. I do not need to worry about making parts fast, and do not have an automatic tool changer. On my first round of coding, I just started on the part from left to right, but there were some operations I skipped because of tool change required. I am going to start programming and do all the operations that require one tool, then change tool and do next round. I also want to take a small drill and pre-bore any holes, as I can then check it for accuracy, and the plunge milling really likes the pilot holes anyway.

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Jim PA

04-17-2018 04:34:28




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 Re: CNC Learning in reply to David G, 04-16-2018 07:43:17  
If your software is capable of 3 axis programing skip the drilling and ramp mill the bores to rough them out. Then go back and finish the bores using cutter compensation to control size. Plunge milling with an endmill is not the way to open a hole and is harder on your machine.



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David G

04-16-2018 09:58:04




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 Re: CNC Learning in reply to David G, 04-16-2018 07:43:17  
I will have to lookup these questions.



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shoprat

04-16-2018 09:54:11




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 Re: CNC Learning in reply to David G, 04-16-2018 07:43:17  
What spindle taper to you have?



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Eric in IL

04-16-2018 09:26:51




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 Re: CNC Learning in reply to David G, 04-16-2018 07:43:17  
Are you able to use any canned cycles ? If not maybe you can write some sub-programs to be called up when needed often . A canned cycle for milling a circle with a ramp-on/off radius is nice, and saves doing a lot of trig. calculations.



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leroy in ne

04-16-2018 08:43:59




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 Re: CNC Learning in reply to David G, 04-16-2018 07:43:17  
You mentioned predrilling to check locations. I suggest using a combination drill also known as a center drill, such as a # 4 unless you mare doing an extremely small hole then a smaller size



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Steve@Advance

04-16-2018 08:15:45




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 Re: CNC Learning in reply to David G, 04-16-2018 07:43:17  
So will you be able to do circular interpolation, radius and arcs, engraving with with it?



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David G

04-16-2018 08:31:05




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 Re: CNC Learning in reply to Steve@Advance, 04-16-2018 08:15:45  
I would assume so, did my first circle, now need to learn how to hog out the inside.



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Eric in IL

04-16-2018 09:34:17




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 Re: CNC Learning in reply to David G, 04-16-2018 08:31:05  
Drill the hole 1/32" undersize whenever possible.



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dr sportster

04-16-2018 08:13:46




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 Re: CNC Learning in reply to David G, 04-16-2018 07:43:17  
I did not realize you were teaching this to yourself. What books do you have ?



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David G

04-16-2018 08:30:22




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 Re: CNC Learning in reply to dr sportster, 04-16-2018 08:13:46  
I have the list of G code, just go on internet and read examples and watch videos.



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