New Build: Another Techno Lathe

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dustboy
Posts: 42
Joined: Wed Nov 06, 2019 8:54 pm
Acorn CNC Controller: Yes
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CNC11: No
CPU10 or CPU7: No

New Build: Another Techno Lathe

Post by dustboy »

Been wanting a lathe, manual or CNC for a few years. This Techno-Isel CNC Servo Lathe popped up cheap on FB and I jumped on it. It's fully operational and appears to be barely used, but Techno no longer supports it and there are no post-processors to be found. The controller is very limited as it was originally intended for educational use.

So, since I've already done one Acorn/Clearpath conversion on my router and cracked the code, I'll do the same with this lathe.

Here's what is on order:

Acorn Kit w/ Lathe Pro
Clearpath CPM-SDSK-2321S-ELN NEMA 23 98 oz-in continuous
Teknic IPC-5 power supply
EDIT: Intel NUC Micro PC i5-7260U 2.2Ghz

Image
Attachments
IMG_0899(2).JPG
Last edited by dustboy on Fri Jun 23, 2023 11:06 am, edited 1 time in total.
My build: Making a CNC P-to-P boring machine less, uh, boring: https://www.cnczone.com/forums/diy-cnc- ... -axis.html
cnckeith
Posts: 7164
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Re: New Build: Another Techno Lathe

Post by cnckeith »

cool, thanks for posting looking forward to the project chronicle.
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
dustboy
Posts: 42
Joined: Wed Nov 06, 2019 8:54 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: Acorn-905
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: New Build: Another Techno Lathe

Post by dustboy »

Clearpath servos mounted, IPC-5 power supply mounted.
IMG_0951.JPG
IMG_0952.JPG
IMG_0953.JPG
Made my own control wires for the servos from CAT-6 cable. Each twisted pair is a +/- signal pair. After a lot of frustration on my router, I found these have much better EMF rejection than any other cable I tried, including the expensive ones that Teknic sells.
IMG_0946(1).JPG
My build: Making a CNC P-to-P boring machine less, uh, boring: https://www.cnczone.com/forums/diy-cnc- ... -axis.html
cnckeith
Posts: 7164
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Re: New Build: Another Techno Lathe

Post by cnckeith »

Nice! thanks for posting.
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
Muzzer
Posts: 728
Joined: Mon Feb 19, 2018 2:52 pm
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Re: New Build: Another Techno Lathe

Post by Muzzer »

Be aware that if those wires are going to be seeing movement as the table moves, they need to be flexible. Cat 6 cable may fatigue fairly quickly and fail weeks or months down the road.
dustboy
Posts: 42
Joined: Wed Nov 06, 2019 8:54 pm
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CNC Control System Serial Number: Acorn-905
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CNC11: No
CPU10 or CPU7: No

Re: New Build: Another Techno Lathe

Post by dustboy »

True. I did at least use stranded CAT6. The same cable has been working flawlessly in my router for 3 years now. I went through a ton of trial-and-error, time-and-expense to make that machine work, so I'm sticking to the same "formula".
My build: Making a CNC P-to-P boring machine less, uh, boring: https://www.cnczone.com/forums/diy-cnc- ... -axis.html
dustboy
Posts: 42
Joined: Wed Nov 06, 2019 8:54 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: Acorn-905
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: New Build: Another Techno Lathe

Post by dustboy »

Ready to turn parts. Got all axes running nicely and spindle speed control is working with 0-10V. Homing from limit switches works. Still need to hookup the spindle encoder. The cabinet is a bit of a rat's nest but I'll get that cleaned up once all connections are complete.
IMG_0056.JPG

I can't see any markings on the existing encoder, does anyone know what the specs might be?
IMG_0057.JPG
My build: Making a CNC P-to-P boring machine less, uh, boring: https://www.cnczone.com/forums/diy-cnc- ... -axis.html
suntravel
Posts: 1967
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Re: New Build: Another Techno Lathe

Post by suntravel »

Unkown Encoder:

PID screen, turn spindle one turn, difference in counts is the encoder resolution

Uwe
dustboy
Posts: 42
Joined: Wed Nov 06, 2019 8:54 pm
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CNC Control System Serial Number: Acorn-905
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: New Build: Another Techno Lathe

Post by dustboy »

Good tip Uwe, although I still need to ID the wires. I suspect the green cover is just for dust, and there is a nameplate on the actual encoder underneath. But to access it I'll have to disassemble the entire cabinet. Was hoping to avoid that mess!
My build: Making a CNC P-to-P boring machine less, uh, boring: https://www.cnczone.com/forums/diy-cnc- ... -axis.html
Reedfirst
Posts: 168
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Re: New Build: Another Techno Lathe

Post by Reedfirst »

The pin outs for the encoders are here...

Hope it helps.
0229_LC_and_Lathe_Board-Callouts-Connectors.pdf
(195.72 KiB) Downloaded 14 times
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