Machsupport Forum
General CNC Chat => Show"N"Tell ( Your Machines) => Topic started by: Superscan811 on September 22, 2012, 12:12:23 AM
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Hi, I'm relatively new to the CNC world but am attempting to work through that...
My first project is the retrofit of an old lathe, with the help of my brother.
My brother is a fitter and machinist so most of the work was done either by him or under his instructions.
As he put it, I'm a computer geek with delusions of adequacy when it comes to machining.
I bought the old lathe mill setup for very little because the bed and screws were stuffed.
Bought some used linear rails and ball screws and then went to my brother for help.
The spindle is either able to index or spin. It has an 8000ppr encoder with an index pulse but as yet, I haven't figure out how to program it properly.
(http://110.174.47.143/SG/CNC/LATHE/Lathe-01.JPG)
(http://110.174.47.143/SG/CNC/LATHE/Lathe-02.JPG)
(http://110.174.47.143/SG/CNC/LATHE/Lathe-03.JPG)
(http://110.174.47.143/SG/CNC/LATHE/Lathe-04.JPG)
(http://110.174.47.143/SG/CNC/LATHE/Lathe-05.JPG)
(http://110.174.47.143/SG/CNC/LATHE/Lathe-06.JPG)
(http://110.174.47.143/SG/CNC/LATHE/Limit-02.jpg)
(http://http://110.174.47.143/SG/CNC%20Wiring.jpg)
I've done most of the wiring and it runs, just have to fit the main spindle motor and figure out how to "program" the limit switches and encoder.
This is the router I purchased recently but it came with a generic LPT controller which I will be changing out for a USB version and again, Gecko stepper drivers.
(http://110.174.47.143/SG/CNC/CNC-ROUTER-001.jpg)
(http://110.174.47.143/SG/CNC/CNC-ROUTER-002.jpg)
(http://110.174.47.143/SG/CNC/CNC-ROUTER-003.jpg)
(http://110.174.47.143/SG/CNC/CNC-ROUTER-004.jpg)
(http://110.174.47.143/SG/CNC/CNC-ROUTER-005.jpg)
(http://110.174.47.143/SG/CNC/CNC-ROUTER-ASSEMBLED-01.jpg)
My final project is to fix this old Zenford Zeigler. The ANCA2000 controller is stuffed but the rest of the machine/servos/linear rails are in very good condition.
It has a 24 tool ATC. I have bought some RUTEX DC servo controller along with the 8000ppr encoders, to "re-brain" it..
(http://110.174.47.143/SG/CNC/Zenford/CNC%20on%20slab.jpg)
Just a little bit of work ahead.
Cheers.
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Can you attach your images instead of linking to them as they dont seem to load or atleast not for me, I get a wee bit at the top of each then it seens to stall.
Hood
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Sorry, I'm on holidays at the moment...
Will fix it up next week.
Thanks for the heads up..
Cheers.
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Looks like the server is very hit or miss.
I managed to see the pics (and saved the lathe ones for my reference!).
What linear guides are those you're using the lathe?
I'm considering converting an almost identical lathe in a similar way, and was looking at using more common Hiwin rails, however due to their height it means the carriage wouldn't then fit under the chuck. I doubt that would be an issue though, as I can't see me doing anything 6" diameter where I'd need to have the carriage under the workpeice.
I was also thinking about mounting the z-axis screw inbetween the rails.
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The server was off while I was away, sorry.
Made a few changes to the server settings, let me know how it goes.
As for the rails, they are THK
I've also made a wire bender attachment for the lathe. It has a 100:1 Harmonic reduction drive and I'm using a 400-step Stepper motor
Calibrating it and doing the post processing is going to be a lot of fun..
Cheers.
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Can you attach your images instead of linking to them as they dont seem to load or atleast not for me, I get a wee bit at the top of each then it seens to stall.
Hood
Yes. The same is here.
Dan
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They are loading here but very slow.
Brett
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Same here. Unfortunately, far too slow for me to wait for them.
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Can I edit my original posts to attach the pictures instead of linking?
Cheers.
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I don't think so. Just make a new post with the pics and I'll edit your original.
Brett
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Thanks.
Hopefully they will be in the correct order.
Cheers..
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Next..
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Next.
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Next
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And Lastly...
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Interesting pictures there S/S. Like Ricky Ricardo once said: "Lucy, joo got some splainin' to doo." ;D
Please tell us what all you got goin' on there. A picture's worth a thousand words and all but some descriptive words here & there would help (me at least). 'Specially the lathe...I'm in a 'tinker with a CNC lathe' mode lately.
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Interesting pictures there S/S. Like Ricky Ricardo once said: "Lucy, joo got some splainin' to doo." ;D
Well I like to tinker as well, my current "interest" is modifying CV style motorbike carbs to fit onto cars. There are a lot of fiddly parts that need to be made and that is why I originally bought the lathe, but I found out after I purchased it that the ways and screws were all but fubar.
After I (or actually my brother) started the retrofit, my boss informed me that he needed some unique "springs" made but was unable to find anyone willing to take on the task because the springs had to be made from 0.5mm stainless steel wire and be very accurate.
That's when I had the idea of the "wire bender" attachment and indexing the head of my lathe, to be able to make these springs. In the programming world it's called "Feature Creep" :'( ..
Anyway, back to the lathe "so far"..
(http://www.machsupport.com/forum/index.php?action=dlattach;topic=22481.0;attach=31909;image)
The cog closest to the headstock is to run the encoder and is grub screwed to the main shaft but the other cog has 2 bearings inside it and a thrust bearing running up against the V-pulley.
There are 2 grub screws that are removed when I'm not indexing the head.
Both indexing steppers go through a 100:1 harmonic drive but the on on the headstock has a further 3.75:1 belt drive reduction.
The original cross slide would have required a fair bit of modification to fit so my brother fabricated the "new" one.
Apart from that, the rest is pretty straight forward.
Talking of Feature Creep...
The next "Feature" will be a 2 axis (linear and rotary), live tooling attachment for the cross slide, but only if I get bored and actually finish designing it.
Hope this muddied the waters further.. :D
Cheers.
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The next "Feature" will be a 2 axis (linear and rotary), live tooling attachment for the cross slide, but only if I get bored and actually finish designing it.
Funny, I'm working on a live spindle for my ORAC as we speak. Got most of the parts already but am waiting for couple more ebay items to arrive. It's gonna be pretty small; an ER16/10mm straight shank collet chuck as the spindle, couple of small sealed A/C bearings, belt drive 24VDC Pittman motor, 36V KBIC-120 DC speed control, 5/16" ballscrew and a belt drive NEMA23 stepper motor.
It'll be mounted on an old Craftsman 6" lathe compound mounted vertically to an extended tooling plate on the carriage. I have a use for it making a part that requires a milling cut across a turned part, change to a drill, dropping down a bit and drilling a .090" hole on center. It'll also have a crude indexing plate/manual lock on the spindle to lock it down while those ops are being performed. That's the way I see it now anyway. "Think-building" is always so easy!:)
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"Think-building" is always so easy!:)
Too true...
I haven't had a lot tof time to play recently but I decided to "level the bed of the router because there were visible discrepancies in the bed.
1mm down and still not close to flat.
(http://110.174.47.143/SG/CNC/1mm.jpg)
1.5mm down and getting closer.
(http://110.174.47.143/SG/CNC/1.5mm.jpg)
Haven't finished the final pass but I ended up having to remove 1.8mm to get a level surface.
You have to wonder how they can sleep at night selling a piece of machinery that is soo far out of true...
PS: the links should now work properly.. :)
Cheers.
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gee I grow my CNC teeth on serial n 1 of that type of machine , no automatic tool changer tho, after a couple of years the controller went south
and they replaced the brains with a Fanuc OM 10 controller, it worked very well
check for worn out ball screws
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There has been a minor upgrades to my CNC since I last posted. Had a bit of a re-design courtesy of my brother.
(http://blackman-research.myvnc.com/CNC/001.jpg)
Mods:
1. It now has 5 axises for machining cad wax
2. Steppers have been replaced for DC Servos.
3. Linear rails
4. Gantry upgrade.
5. 270mm Z travel (instead of 90mm)
6. Automatic Tool Chamger. :D :D :D
(http://blackman-research.myvnc.com/CNC/00a.jpg)
(http://blackman-research.myvnc.com/CNC/00b.jpg)
(http://blackman-research.myvnc.com/CNC/00c.jpg)
My brother modified a standard 2.2kw Chinese spindle to be an air operated ATC spindle. It takes a "cartridge" which uses a C1 collet. These are good for cutters up to 1/4" shank.
The cartridge can be removed and the standard ER11 collets can be used for manual tool changes if required.
Cheers.