G & M Code: CNC Lathe Programming by Hand - Vlog #91

CNC Machining - How to hand write a CNC lathe program using G & M Code.

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[eriksonderlon]

I like this format. It's so cool watching the machine respond to each line of code after you've programed and explained it.

[CarniMore]

I haven’t machined in almost 20 years and I’m thinking of getting back in to it . I remember using a G 75 code for face passing. I also remember using G71 code when a lot of material had to be turned off. Thanks so much for your video brother. Hell, I’ve got the fever now !!😂👍

[josephstump]

When putting in the Z move for the Radius if W is used instead then the W value is the same as the Radius no matter where you are on the part. No need to do added math. Same thing with using G42 to compensate for the tool Radius. I am a lazy free hand programmer so those little things make life much easier and quicker. Great introduction video to free hand programming and shows the details of what the machine is doing when creating a Radius. I would love to see some videos on can cycles and cutter comp. Keep up the great work. Love what you guys are doing.

[customcncandmachining]

best cnc vidios yet !!!! please make more for us beginners

[ramanak]

very clear explanation, hope it would be in metric, I have almost forgot hand programming, after we've bought mastercam, thanks for the rewind, expecting more videos like this. Thanks from India

[JustLarry]

I’ve been doing this for years but most companies don’t let you edit programs this page is extremely helpful for teaching thanks

[CNCMachinistEducationNetwork]

Nice video that actually links G code to tool movement.  I learned CNC with manual G Code on 3 -4 axis CNC Mills. Didn't do that much lathe work in 25+ years. But now that I teach it I find that the lathe is easier to hand program  - but its a different animal for sure - Back in the day we had Mill guys and lathe guys and we never knew what each other did. 

it would take more videos to explain the basics of lathe code (especially if you are a mill person) . Cutter comp is different -  have to think of X axis as a diameter at all times in reference to rads and chamfers - you only need SFM and Chip load for 90% ( less math). Incremental movements can be used  yada yada -

I forgot about doubling up on "X" face move for a 1/64 rad - thanks - plus Kuddos on the Knurling - I have been pondering that for our Haas ST10 - keep up the good  work Tyson

[carvajalm.a]

thanks for the wisdom, better than my swedish teachers whit military experience . you are the best!

[ben]

Nice video.

I used to run a Bavelloni 4 axis CNC mill, cutting kitchen worktops and all my jobs have had the G code created by a tooling program.
I had been doing that for 6 years, I could quite happily do any job without problems (Providing it was doable)

My new job I am just an operator on a CNC lathe, im not being taught fast enough about the code, I suppose its better for them for me to bash out parts than to teach me about the code.
It was nice to see your explanation and to understand more about the code that I see running, so yeah, thanks :)

Hopefully these videos will help me progress

[bruceflanders]

47 years I worked Aero Space and Medical. I remember paper tape 3 and 4 hole programing with star wheels on controls for offsets. asci & esa Now all controls have a Windows based Control I like them but also find confusing so these video's are great.

[callledonia]

Now when I have less experienced guys on with me at work I can show them this video to explain the basics better than me haha, good work.

[JAL]

I know you probably won’t see this but you’re videos really help me, I’m new to cnc and machining and I had a job today and I was watching another one if you’re videos talking about g71 and it really helped me build up confidence checking my programming was all ok thank you for making such good quality videos and taking time to explain step by step what it all means and what it does

[AlesanaxD]

Thank you so much! This helped me a lot to better understand! Love how you explained everything thoroughly.

[adamellifrits]

I’ve been working on old machines called Davenports and I decided to up my career to the cnc machines im now in collage and im starting hand programming using cimco and I would like to learn how to really get into this.

[caseywaite]

Be sure to do G70 and G71 examples! They’re a hand programmers wet dream.

[keithlane]

Excellent tutorial Tyson. I know this was an educational video, but on a production program, do you program in a safety block at the top of the program to cancel any offsets or absolute / incremental info from the previous program so the new program doesn't pick it up and potentially cause a problem?
M is for Modal commands.
Again, excellent video.
So glad you guys are getting the next generation(s) up to speed on cutting edge manufacturing.

[TimsCNC-Tractors-and-more]

Great video guys! This is what did for years was hand program everything at lathe. I use to set my machine defaults at the top of the program just below the part number (example G54, G18, G99 etc)...but the way you did it is just as good also....One comment I read was to use a G42 for cutter used that a lot myself ( Cutter comp can be tricky for a beginner, but once you get use to it, you will love way, great video dude.

[walterwolansky]

I have seen a lot of programs with the g97 before the g96 and couldn't figure out why it was written like that. It makes sense now.

[rogeliozaragoza]

Nice video 👌
What about a video on how you find the centerline of your tool to spindle or at least some tips or trick to simplify the process

[robertholland]

I work at NTN as a set up technician and I would really love to see and learn more about programming in all aspects. I work with metal grinding wheel lathes and also CNC lathes. Most of the grinding wheel lathes have a template for the program but the you have your GA60 II witch are grinding wheel program base.