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Bverysharp9 months ago
I can't see this instructable at all. Pressing the View all steps button results in nothing. What am I missing?
gazeteci281 year ago
güzel bir şeyler yazmam gerektiği için yazıyorum.
dtpostel2 years ago
Excuse for asking, what does CNC refer to?
alexis_43153 years ago
Very Impressive Idea...
Excuse me ,r u a university student? oh , Trick or treat, haha!
YOU FAIL! haha
what ever.
CNCmakers3 years ago
Cool, you are better, how about the accuracy after your work done? what we do is just replace the original CNC control and AC servo motor & drivers. here is our work of retrofitting a second hand Mori Seiki CNC lathe: http://www.cncmakers.com/cnc/Tech_Support/CNC_machine_retrofitting.html
SubMicro3 years ago
Great instructable but seems to leave out allot of detail needed to replicate.
Jkirk32793 years ago
"So I added a couple of input contacts that are activated from a sliding rod that give feed back as to when the table is moving, and it virtually gives me no error (step size is 0.0179mm)."

You mean you bought an official kit, like from NewAll ?

That would explain the precision. About the only way to beat the backlash in an older machine.
djinn19873 years ago
good guy so good i am from China ,"come on" chinese is< 加油- jiayou>
Mudsucks4 years ago
Great Idea charcoal999, But I looked at your driver circuit and don't understand why you didn't use the washing machine driver itself. It takes mains ac and rectifies it to a dc bus voltage then chops it up to drive the three phases of the motor at up to +/- 1200rpm. The input to the driver section could be cut free from the washing machine cpu and fed directly from a breakout board or cheap micro-controller. Regards Mudsucks.
keioku4 years ago
Great Cool Instructable!
I hope more information about  your comment.
How does it (a sliding rod) works ) ?
----------------------- your comment -----------------
So I added a couple of input contacts that are activated from a sliding rod that give feed back as to when the table is moving, and it virtually gives me no error (step size is 0.0179mm).
Charcoal, "Im Inspired". I am familiar with the Fsher And Paykel motors. Through research on using them as wind generators. There are a few different models what model did you use? Where can I download your CNC software? Keep up the good work REgards Whitworthsocket
SeaCaptain4 years ago
I absolutely love Instructables, because of people like you who are willing to share their excellent information! Thank you! This looks like a great project which I just might try.
fgleich5 years ago
Why did you not use the linux software, EMC ? FREE FREE FREE
charcoal999 (author)  fgleich5 years ago
I Don't think it was around while I was doing this project. I will look at it when its available.
mrwolfe5 years ago
A switching current regulator would be better. You could use a 555 or an LM317 to turn M1 off for 10us or so when the current hits 2.1A. If you get it right the average current will be 2A, and it will have a high risetime.
charcoal999 (author)  mrwolfe5 years ago
That would probably be more efficient... but the stepper is a bit sensitive to any bumps in the voltage and all though not as elegant or as efficient , the output is smoother using the above. I did try a switching regulator and when I put a scope on the pulse train going to the stepper it was not quite what I was after.
4star5 years ago
does and one know how how the 2axis cnc can be controll through a high level prog language like C/C++.
JorLouJr5 years ago
What´s the motor resolution (how many steps per turn) ?
charcoal999 (author)  JorLouJr5 years ago
The motor resolution is 0.0178 mm per pulse, and I think there are about 48 coils in the motor which is used in a half step mode. I should say the motor resolution is much better than the mechanical resolution of my milling machine which lets me down.
JorLouJr5 years ago
TurboCNC would fit the bill pretty nicely ... it´s free and can run on very old PCs ... www.dakeng.com
charcoal999 (author)  JorLouJr5 years ago
Yip... I must have tried about 20-30 software packages and found that most of them are to involved to do anything quickly, also I had no control over things such as speed ramping and optomising the cutting time, I kind of wanted something that I could manualy draw in the cutting path and then just have it do it in 3-D
bishopdante5 years ago
All those lovely old machines that can be robotised. Yeah. The future lookin' GOOD.
ivanirons6 years ago
Cool Instructable. You are very creative and technical. I like the electrical schematic. Very helpful.

Good work,
Ivan Iron
CNC Video Tutorials
http://www.cncinformation.com
it is a cool instructable and i don't mean to be negative but schematic is not complete and it has few things that need to be corrected. for example shown diodes in bridge rectifier are way to small for the job and AC is not connected properly to bridge.
charcoal999 (author)  panic mode6 years ago
Pointing out errors is a constructive comment, thanks. You are correct the schematic shown was actually from a microcap simulation program to check that it was going to work(I could not put in diodes required in the program but the program does not blow up). The actual bridge rectifer used was one of the box type that can handle 50 amps.And yes one side of the AC should not be connected to ground it should be connected to the other side of the bridge,not sure how that happend I must have tidied up the schematic and changed it.
charcoal999 (author)  ivanirons6 years ago
Not so creative, just didn't have the money to spend but had the time and inclination. Hope it helps someone.
gkimber26 years ago
I know this is off topic, but did anyone notice that if you use a wheel mouse to scroll paste the first picture the disk on the right side of the photo appears to rotate? You have to hold your eyes still and roll the page up and down.
ur on crack lol. jk bro.. i tried it and didn't see nothin
you're right... good call
Oh wow... dang... nice job, this is very nicely done. Great schematics, great pictures, looks like A LOT of work.
charcoal999 (author)  GorillazMiko6 years ago
Hi, Yes it is a bit of work but very satisfying once it works. And if you enjoy making engines etc, it makes the task fun instead of mundane.
I've made something similar, instead I used some 4-axis divider and I used 4 PicStep drivers. Etching the boards were terriable. transfering the toner, soacking it, hours hunched over the sink removing little bits of paper between fine traces with a tooth pick. Hunched over the sink more, swishing the etchant. Hunched over, drilling hundereds of holes. sitting, soldering hundereds of joints. soldering 160 leads for data and power cables, it was terrible. Hopefully when I'm done with my 36 volt, 8 amps power supply I can finally test all of my stuff!
charcoal999 (author)  guyfrom7up6 years ago
I used to do process control so I think the PICAXE chips are "better than sliced bread" and very easy to program and use. I did the same thing with the printing then photo-copying to get toner on photo paper and then wash off the paper(took ages). But if you check out jaycar they have a system which uses the toner which is a lot less hassle. My system evolved over time so it was not that big a drama to make. At 8 amps sounds like you might be able to drive FLATTOPS bicycle
thebboy6 years ago
what does cnc mean
wiml thebboy6 years ago
it stands for "computer numerical control", it just means a computer-controlled milling machine or other shop tool.
thebboy wiml6 years ago
oh thanks. this looks really cool, but wouldn't serve someone like me any use.
It might not. But learning how to program one using Logo or other controller language could come in handy sometime. I once took a part time job and ended up writing scripts for a machining laser that cut out pieces for microwave filters and amplifiers. Anytime you can get a chance to learn something cool you ought to take it. Ya never know. Besides, you could build it and sell it to some woodworker to run his router.
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