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Thread: AL-54B CNC Conversion
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4th Apr 2011, 09:16 PM #1Intermediate Member
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- Jun 2010
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- Melbourne
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AL-54B CNC Conversion
Hi all,
As per this thread http://www.woodworkforums.com/f65/h-...pecial-132769/ I have purchased an AL-54B for a CNC conversion. For the money I paid I think it is a good starting point. Let me just say that I am no CNC expert. This is a learning curve for me and I will be drawing on the experience from other more 'cluey' members.
The main aim for me is to do it neatly and properly. I am not shy to spend money on the righ gear if I know its going to do what I want. Here are some pics straight out of the packaging. And yes, the motor was toast right away.
I have ordered the electronics through EZ CNC, or Yuntat as they are known also. During the weekend I had stripped the lathe of basic components in preperation of the conversion. Today the goodies arrived from Hong Kong.
I ordered one Nema 34, which will be sitting in place of the q/change gearbox, and two Nema 23 motors. The extra Nema 23 will be for the tool turret which I am currently drawing up. All the electronics will be mounted in a new panel replacing the one joining the two legs on the stand. It will feature a hinged panel to make access easier.
New .55 kw 3 phase motor which will be driven by a Hitachi VFD.
All the gear train removed. I will make a laser cut plate to flange mount the new motor to the lathe.
The stand for the LCD screen and a 6inch keyboard. Another laser cut panel will screw onto this holding the keyboard and a spot for a mouse.
All bracketry will be laser cut and or machined........lets see how I go.
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4th Apr 2011, 09:30 PM #2
I read your other post and have been waiting in the wings to see this, after speaking to one of the fellows at H&F last Saturday they assure me there is nothing wrong with the lathes only the motor. So following with much interest.
Ray
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4th Apr 2011, 09:32 PM #3Product designer retired
- Join Date
- Nov 2006
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- Heidelberg, Victoria
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- 79
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Aussie,
I reckon you will have a captive audience with your project.
Documentation so far is great, it will be interesting to follow your plight. CNC is something I would love to get into, but just don't know where to start.
Basically, what do you place under computer control? Spindle speed, lead screw speed and cross slide speed?
Ken
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4th Apr 2011, 10:48 PM #4Dave J Guest
Your not mucking around.
I will be watching this thread to see how you go about it.
I just thought I would copy and paste this from the other thread.
I saw a lathe that had the stepper/servo motor down on the right side of the apron instead of sticking out the front which I thought was a good idea as it kept it out of the way. It ran off a belt up to the cross slide screw.
Did you contact H&F's about the damage?
Dave
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4th Apr 2011, 11:04 PM #5Intermediate Member
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- Jun 2010
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- Melbourne
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Don't let not knowing too much stop you. The net is a wealth of information. I must also add that the PDF from Mach3 is fantastic reading. Not only from the programing side but also the advice they give for setting a lathe up.
Dave, the plan is to have the Nema 34 where the grearbox was. This will be covered by a panel and sitting in that panel will be the hand controller for that stepper. The cross slide Nema 24 will be sitting under or off to the side of the 16mm ball screw with a 2 to 1 reduction via a timing belt. One thing I have noticed when lathes of this size are converted is the poor look and finish of the conversion. I only want to do this once. The saddle wil also be machined so I can run a full length screw cover. The very last bit, when and if it all goes well, will be a lift up lid that covers the chuck and saddle.........but this is way down the track.
My main concern at the moment is finding wiring schematics for these particular steppers and drivers, something they don't come with.(you know.....a diagram for simple folk!)
I'm not too fussed about the damage. I can see the removal of that panel and a replacement made from stainless housing something......not sure yet......but something.
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4th Apr 2011, 11:24 PM #6Senior Member
- Join Date
- Feb 2008
- Location
- Australia
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- 146
Does the supplier give you the color coding for the phases? if you know that it should be simple to wire up.
I see they are all 8 wire, and I gather the drivers are Bipolar, just means you'll need to pair the wires and then each pair goes to A+, A-, B+, B- on the driver.
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4th Apr 2011, 11:30 PM #7
Hi aussiejoeblow,
Nice to see you are getting stuck into it. Mach3 and steppers is a nice way to get it up and running quickly. I spy a Macson lurking in the background so you shouldn't have too much trouble making the parts you need.
I've been chasing small diameter unjacketted anaconda for running cables around the mill, you might be interested also. Lawrence & Hansen appear to be the agents.
Product Range
Watching with interest.
Regards
Ray
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5th Apr 2011, 04:56 PM #8Intermediate Member
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- Feb 2011
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- Sydney
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- 37
Hi Aussie,
Great to see the quick progress, following with interest!
Darren
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6th Apr 2011, 11:29 PM #9Intermediate Member
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- Jun 2010
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- Melbourne
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Thanks for the info Chris and Ray.
More goodies have been arriving so I have been busy mocking things up. Better progress will happen on the weekend when I have my laser cut adaptors.
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11th Apr 2011, 10:46 PM #10Intermediate Member
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- Jun 2010
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- Melbourne
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- 40
Ball screws are mounted as is the motor. It took a fair bit of machining to get the ball screw in the cross slide but the results are looking good.
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11th Apr 2011, 11:21 PM #11
Hi aussie,
Looks nice and neat, I take it the stepper mounting is the laser cut part you were waiting on.
With the ballscrew, I can't see how the ballnut fixes to the saddle, I'm guessing there is another bracket or bearing mounting block.
The bearing closest to the stepper, are they AC bearings? The far end bearing, I think should be just floating, but I think I see a circlip? You need to allow for the ballscrew to expand and contact a little. You probably already know this.
I see H&F still have some of these AL54B's for sale, very tempting, I wish I didn't already have more projects than I can afford. I'd love to be doing one of these...
Regards
Ray
PS any pictures of how you got the ballscrew to fit into the cross slide?
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11th Apr 2011, 11:26 PM #12Intermediate Member
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- Jun 2010
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- Melbourne
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- 40
Thanks Ray. I am actually making a new sadle that incorperates the mounting for the ball nut, should be in my hands tommorow. The bearings were supllied with the ballscrews. The end has a circlip but the bearing itself floats in the housing. The circlip is just preventing the bearing from comming out alltogether.
I'll try pull the cross slide off on the weekend to finish some things off and show what I did.
If anyone is keen on doing one of these...........I still have all the DXF's for the laser cutting.
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13th Jun 2011, 09:56 PM #13Intermediate Member
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- Jun 2010
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- Melbourne
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- 40
Better do some updating......
Most of the electronics are done. PC is up and running and the servos work...
Lots more bracketry to make and lots more tidying up to do.
Stainless lead screw cover.
Electronics cabinet.
PC.
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5th Jul 2011, 03:23 PM #14
Looking good.
Somehow I missed the update.
Well my chance slipped by they say never let a chance go by, I let 2 go by. In waiting for news of a 230x500 similar to the AL50G lathe possibly coming my way through a deceased estate. Hare & Forbes have now removed this lathe from sale and their website. The 230x500 got tied up in legal issues and I passed on it as the cost to retrieve it I could have bought a new one.
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21st Jul 2011, 10:19 PM #15
If anyone is looking for a lathe to convert I have a new AL54a for sale, see Metalwork Market.
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