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Author Topic: 1980 Mori Seiki SL1 CNC Lathe to Mach3 Conversion  (Read 10054 times)
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JHChoppers
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« on: April 07, 2011, 04:50:11 PM »

We are just getting started on this Mori Seiki SL1 CNC Lathe to Mach3 Conversion.  I have had this lathe for about 2 years and now its time to get moving on it.  I didnít want to dig into it until I had both the time and resources to dedicate to the project.  

Not knowing much about CNC Lathes or Mach3 Lathe, I anticipate this will take some time for me to get my head around it.  My plan is to get some of the covers off and understand the spindle and X & Z Axis first.  There is a 3 Phase 2HP hydraulic pump for the Collect Closer, Tail Stock, and Tool Changer: not sure how this works or the theory of operation of these mechanisms.  Also is a Coolant pump and Lube pump.  

Not sure what I will reuse yet of the Axis Drivers or Spindle Control as the lathe will need to converted to 220VAC Single Phase.

If anyone has information on these lathes, it would greatly be appreciated.

It is in real clean shape and was clamed to be functional when we got it.  Below are some pictures of the starting point:


* move_1.JPG (848.82 KB, 1000x845 - viewed 375 times.)

* lathe_1.JPG (822.09 KB, 1000x846 - viewed 620 times.)

* lathe_2.JPG (703.04 KB, 1000x725 - viewed 493 times.)

* lathe_3.JPG (1028.36 KB, 1000x1083 - viewed 381 times.)
« Last Edit: April 07, 2011, 04:53:23 PM by JHChoppers » Logged
ostie01
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« Reply #1 on: April 07, 2011, 06:18:17 PM »

It look like to be in really good shape.

I'm nor worry about this project when I look at the VMC retrofit you did, it was so nice.


Jeff
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Hood
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« Reply #2 on: April 07, 2011, 06:49:41 PM »

Looking forward to seeing this progress, the more lathes  on Mach the better Smiley

Hood
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dresda
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« Reply #3 on: April 07, 2011, 07:15:42 PM »

I thought it had a fanuc 6TA control but looking at the Z axis motor I don't think so, is it a Yasnac?
Spent the last 30 years working on Mori's and the like, no yasnacs up here in Canada. Have lots of info. Do you have drawings?
This is the Cadillac of machine tools.
Ray.
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JHChoppers
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« Reply #4 on: April 08, 2011, 10:20:36 AM »

It look like to be in really good shape.

I'm not worry about this project when I look at the VMC retrofit you did, it was so nice.

Jeff

Thanks for the vote of confidence.  I know tool/engine lathes well, but CNC Lathes are new to me. 
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JHChoppers
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« Reply #5 on: April 08, 2011, 10:34:53 AM »

I thought it had a fanuc 6TA control but looking at the Z axis motor I don't think so, is it a Yasnac?
Spent the last 30 years working on Mori's and the like, no yasnacs up here in Canada. Have lots of info. Do you have drawings?
This is the Cadillac of machine tools.
Ray.

Cadillac is right on !  This thing is one big hunk of old iron...its a beast at 5500 LBS. 

Yasnac is the servo types, I have a poor condition connection drawing of an SL3 Lathe and a good detailed connection / interface drawing for the Spindle Control.  I will post these once I scan them in.  If you have anything on the SL1 I would very much like to see it Smiley



* servo_1.JPG (106.2 KB, 1000x789 - viewed 238 times.)

* tear_down_1.JPG (109.31 KB, 1000x793 - viewed 360 times.)
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JHChoppers
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« Reply #6 on: April 08, 2011, 10:42:13 AM »

Here are some additional pics of the electronic enclosers.  Encloser 1 has the main power and spindle drive, enclose 2 has a power supply(?), X and Z drivers, and the 1980s computer circuit.  It does have a tape drive converter circuit too, this might have some eBay value Smiley

JH



* encloser_1.JPG (131.34 KB, 1000x750 - viewed 394 times.)

* encloser_2A.JPG (209 KB, 1000x1333 - viewed 296 times.)

* encloser_2B.JPG (124.28 KB, 1000x750 - viewed 345 times.)

* h_pump_1.JPG (95.25 KB, 1000x750 - viewed 293 times.)
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JHChoppers
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« Reply #7 on: April 13, 2011, 11:01:10 AM »

The internet is great!!  I was able to find the Yaskawa documentation for the X and Z Servo Motors and Optical Encoders.  The good news is these are simple DC Servo Motors rated at mild 400W Continuous and 2000W Peak.  Even better is optical encoders are old school digital quadrature with 500 p/rev.  (looking at the datasheet, I am not sure if this means 500cpr / 2000ppr or 125cpr / 500ppr, I am hoping for 500cpr / 2000ppr)  The output voltage is a collector pulled up to 12volts, so I should be able to convert this to TTL levels.  (not bad for 1979)

In theory, I should be able to drive these stock servos and stock encoders with a simple gecko, viper or CNCDrive

Attached are the datasheets for Servos and Encoders


* quad_encoder.jpg (222.42 KB, 1038x653 - viewed 311 times.)
* TSE-C244-4E.pdf (1508.67 KB - downloaded 250 times.)
* TSE-C770-1K.pdf (1350.98 KB - downloaded 192 times.)
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dresda
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« Reply #8 on: April 13, 2011, 07:58:49 PM »

We never saw the Yasagawa units up here in Canada. All the mori's would have Fanuc And the encoders would be 2000 Pulses and guess that's X4 8000ppr. Any Mori with Fanuc DC brushed motors and drives would be +-10volts analogue so you would need a $1000.00 motion board and good look trying to make it work. I do have one mill working at the moment with DSPMC running DC motors Servo Dynimics but that's hit and miss. i have been trying to run Fanuc ac analogue motors for the past 12 months with no success.
Ray.
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manmeran
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« Reply #9 on: April 13, 2011, 11:23:14 PM »

Quote
drives would be +-10volts analogue so you would need a $1000.00 motion board
you can use YAPSC for this purpose. Cheap and reliable

Dear JH
is it possible ask about price for lathe ?
Approximate price What is it?

Amir
« Last Edit: April 13, 2011, 11:27:36 PM by manmeran » Logged

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