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Putting it all together

 by charcoal999
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dtpostel says: Apr 5, 2012. 6:58 AM
Excuse for asking, what does CNC refer to?
alexis_4315 says: Dec 1, 2010. 2:44 AM
Very Impressive Idea...
nicolas.k in reply to alexis_4315Oct 29, 2011. 2:04 AM
Excuse me ,r u a university student? oh , Trick or treat, haha!
amcmahon in reply to nicolas.kDec 12, 2011. 5:57 PM
YOU FAIL! haha
alexis_4315 in reply to nicolas.kOct 29, 2011. 9:17 PM
what ever.
CNCmakers says: Sep 4, 2011. 7:21 PM
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
SubMicro says: Mar 13, 2011. 2:44 PM
Great instructable but seems to leave out allot of detail needed to replicate.
Jkirk3279 says: Feb 8, 2011. 4:52 PM
"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.
djinn1987 says: Dec 30, 2010. 8:13 AM
good guy so good i am from China ,"come on" chinese is< 加油- jiayou>
Mudsucks says: Jun 4, 2010. 3:36 PM
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.
keioku says: Apr 4, 2010. 4:09 AM
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).
whitworthsocket says: Oct 4, 2009. 8:32 PM
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
SeaCaptain says: Sep 16, 2009. 4:53 AM
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.
fgleich says: Apr 18, 2009. 8:32 PM
Why did you not use the linux software, EMC ? FREE FREE FREE
charcoal999 (author) in reply to fgleichJul 6, 2009. 4:52 PM
I Don't think it was around while I was doing this project. I will look at it when its available.
4
mrwolfe says: Jun 24, 2009. 8:04 PM
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) in reply to mrwolfeJul 6, 2009. 4:47 PM
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.
4star says: May 31, 2009. 5:02 PM
does and one know how how the 2axis cnc can be controll through a high level prog language like C/C++.
JorLouJr says: Dec 16, 2008. 4:28 AM
What´s the motor resolution (how many steps per turn) ?
charcoal999 (author) in reply to JorLouJrDec 16, 2008. 3:28 PM
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.
JorLouJr says: Dec 16, 2008. 4:22 AM
TurboCNC would fit the bill pretty nicely ... it´s free and can run on very old PCs ... www.dakeng.com
charcoal999 (author) in reply to JorLouJrDec 16, 2008. 3:17 PM
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
bishopdante says: Oct 16, 2008. 11:40 PM
All those lovely old machines that can be robotised. Yeah. The future lookin' GOOD.
1
ivanirons says: Feb 16, 2008. 10:12 AM
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
1
panic mode in reply to ivanironsMar 5, 2008. 8:03 PM
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) in reply to panic modeMar 7, 2008. 1:57 PM
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) in reply to ivanironsFeb 16, 2008. 11:39 PM
Not so creative, just didn't have the money to spend but had the time and inclination. Hope it helps someone.
gkimber2 says: Jan 29, 2008. 8:17 AM
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.
wbreslin951 in reply to gkimber2Feb 15, 2008. 11:49 PM
ur on crack lol. jk bro.. i tried it and didn't see nothin
davebrown in reply to gkimber2Jan 31, 2008. 5:52 PM
you're right... good call
30
GorillazMiko says: Jan 26, 2008. 4:15 PM
Oh wow... dang... nice job, this is very nicely done. Great schematics, great pictures, looks like A LOT of work.
charcoal999 (author) in reply to GorillazMikoJan 27, 2008. 4:02 PM
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.
17
guyfrom7up in reply to charcoal999Feb 1, 2008. 8:30 PM
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) in reply to guyfrom7upFeb 2, 2008. 12:15 AM
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
3
thebboy says: Jan 25, 2008. 9:13 PM
what does cnc mean
wiml in reply to thebboyJan 25, 2008. 9:33 PM
it stands for "computer numerical control", it just means a computer-controlled milling machine or other shop tool.
3
thebboy in reply to wimlJan 26, 2008. 6:56 AM
oh thanks. this looks really cool, but wouldn't serve someone like me any use.
Trent The Thief in reply to thebboyFeb 1, 2008. 9:02 AM
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.
3
thebboy in reply to Trent The ThiefFeb 1, 2008. 3:10 PM
too complicated for a kid like me.
flattop says: Feb 1, 2008. 5:57 AM
Are they stepper motors or brushless DC, kinda like an enormous CD-ROM motor? Or are the two pretty much the same thing? You've got me wondering if you could make those into hub motors for an electric bicycle or cart.
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