CNC Lathe
by Lathe on Apr.10, 2009, under Lathe Videos
Homemade CNC
Popularity: 4% [?]
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April 10th, 2009 on 9:51 am
Thanks, it’s funny how everybody has noticed that I was using a boring bar. In a home workshop, sometimes, tools have to be used for tasks other than the ones they were designed for….
This video actually doesn’t do much justice to the whole system. Depth of cut is very shallow, since I was doing some tests… I should post a video with the machine doing some tough turning.
Thank you!
April 10th, 2009 on 9:51 am
wow. lovin the ghetto tooling. thats how we do it!
April 10th, 2009 on 9:51 am
Hell I dont know why you all are so concerned about turning the OD with a boring bar I have used one as a substitute for a fly cutter in a pinch while milling on the lathe lol
April 10th, 2009 on 9:51 am
What’s wrong with ScubaSteveM45? So negative and arrogance?
Who said CNC had to be rapid? It is computer control regardless. If you are a home workshop, using stepper motor is the most ideal solutions!!
Anyway Payala, its good work. Which lathe model do you own? I’m thinking of retrofitting mine as well. Do you also have DRO fitted?
Did you replace leadscrew with ballscrews?
April 10th, 2009 on 9:51 am
Nice video
Good job with that boring-bar.
April 10th, 2009 on 9:51 am
why are you using a boring bar for that?
April 10th, 2009 on 9:51 am
It is very nice Ineed more information about cnc for my job, I am a techers. Thankyou.
April 10th, 2009 on 9:51 am
be nice
April 10th, 2009 on 9:51 am
GO Navy MR2 Nannie
April 10th, 2009 on 9:51 am
I set a Hardinge GT SP fast and repeatable to a .0001″ we have a Haas as well not so quick but good for large stock
April 10th, 2009 on 9:51 am
This is CNC, and not NC. Check out CNC on wikipedia.
I have both a CNC lathe and mill which I have converted myself. The reason for it being so slow is the limitations of a homemade system. With servos you can get some preatty good rapids, but generally you will get more on a more professional machine.
And we do call it CNC in Denmark too (Jeg ved det sgu godt fordi jeg arbejder med disse maskinerne hver eneste dag). NC machines are a different thing.
April 10th, 2009 on 9:51 am
Yeah mate i run a okuma LB300M which is a sort of modern lathe and all u have to do is learn how to cover everything in the tool data and parameters. Programming is easy its the other stuff that can bring u undone if u dont know what your doing. Id say less than 2 months if u pay attention
April 10th, 2009 on 9:51 am
i do like the boring bar. lol
April 10th, 2009 on 9:51 am
The speed is so slow and depth of cut is so shallow because it was my first test, and I didn´t want to push the limits. but i have achieved perhaps 2x-3x more speed and 5x bigger depth of cut.
April 10th, 2009 on 9:51 am
You can call it whatever you want, it simply is a manual lathe with servo motors attached, and servo controllers powering the motors and receiving commands from a computer. If I had to, I would classify it as a home cnc lathe(it really is Numerically Controlled from a Computer).
The boring bar is just there becuse my normal turning inserts were unusable at the moment, and I wanted to make a test as soon as possible ( I was really excited to see it working, since I made it all miself).
April 10th, 2009 on 9:51 am
its called a nc lathe.its before the cnc came along thats why its slower.yea its ood they are using a boring bar for it.
April 10th, 2009 on 9:51 am
Yeah and it looks like they’re using a boring bar for turning.
April 10th, 2009 on 9:51 am
i heard it can be mastered in two months
April 10th, 2009 on 9:51 am
pretty slow cnc machine
April 10th, 2009 on 9:51 am
I`m taking a 5 months CNC course I hope I learn this stuff I making it my career
April 10th, 2009 on 9:51 am
Of course, when you turn in a manual lathe that’s the technique you have to use to compensate backlash. However, i have found that it is not easy to make the CAM program automatically generate toolpaths that make the tool advance always in the same direction (most important for X axis).
April 10th, 2009 on 9:51 am
the missing ballscrew isn´t that much of a problem if you make the program cut the same way all the time, this eliminates the backlash and the parts you turn will look as nice as parts from a “real” cnc lathe.
About the name i think it´s called a nc lathe, or at least we call it so here in Denmark.
April 10th, 2009 on 9:51 am
True – main problem is the missing ballscrew. At my workplace we have a “semi CNC”. No automatic tool change but CNC control.
April 10th, 2009 on 9:51 am
Maybe its because thats what he had on hand???? why kick him in the balls? hes not turning out fan blades for a GE turbine? or critical parts so what a few thousandths? later
April 10th, 2009 on 9:51 am
Thats a really easy program….