First Project | proLIGHT | Acorn Conversion

All things related to the Centroid Acorn CNC Controller

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martyscncgarage
Posts: 9912
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
Location: Mesa, AZ

Re: First Project | proLIGHT | Acorn Conversion

Post by martyscncgarage »

Don't hold me to this but I think you would want a 4 or 5 way air solenoid valve. Perhaps someone here more in tune with pnuematics can chime in.
Save that manifold as it is. Just buy one. Ebay sells them. Choose the voltage you want to use, get a momentary button to actuate the valve. Easy.
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
citterly
Posts: 65
Joined: Mon Jun 04, 2018 10:05 am
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: Kalamazoo, MI

Re: First Project | proLIGHT | Acorn Conversion

Post by citterly »

It's been a while since my last post, this project kept getting pushed back on the priority list.
All the electronics have their final wiring and are installed on the back of the machine.

I decided to learn a bit of video editing this evening.
I hope you enjoy this clip of the machine running some test code.
https://youtu.be/CMxFlxtXb78

Next steps:
Enable the power draw bar.
Ball screw mapping

Best
Chris
First Acorn project, proLIGHT 1000 mini mill:
viewtopic.php?f=60&t=1858
DICKEYBIRD
Posts: 536
Joined: Sat Jul 08, 2017 7:38 am
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: n/a yet
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: Collierville, TN USA

Re: First Project | proLIGHT | Acorn Conversion

Post by DICKEYBIRD »

Really great job Chris! Neat,tidy & it runs very smooth. You made it look easy! :D
Milton in Collierville, TN

"Accuracy is the sum total of your compensating mistakes."
martyscncgarage
Posts: 9912
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
Location: Mesa, AZ

Re: First Project | proLIGHT | Acorn Conversion

Post by martyscncgarage »

Excellent work Chris!
Marty
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
citterly
Posts: 65
Joined: Mon Jun 04, 2018 10:05 am
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: Kalamazoo, MI

Re: First Project | proLIGHT | Acorn Conversion

Post by citterly »

Thanks Fellas, couldn't have done it without your help !!!

I have a question related to ball screw mapping.
In this video, it's recommended to use high precision home switches, specifically Metrol.
https://www.youtube.com/watch?v=yMRqL8b0Orw
https://www.metrol.co.jp/en/products/po ... switch_pt/

Has this been your experience as well?

I currently have these switches installed in all 6 locations, this particular switch:
https://www.digikey.com/product-detail/ ... 6-ND/31078

I'm thinking I should replace 3 home switches with high precision pieces, is there a particular switch and vendor that's recommended?
First Acorn project, proLIGHT 1000 mini mill:
viewtopic.php?f=60&t=1858
citterly
Posts: 65
Joined: Mon Jun 04, 2018 10:05 am
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: Kalamazoo, MI

Re: First Project | proLIGHT | Acorn Conversion

Post by citterly »

Power drawbar operational.

https://youtu.be/AIBtiFNilDI
First Acorn project, proLIGHT 1000 mini mill:
viewtopic.php?f=60&t=1858
martyscncgarage
Posts: 9912
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
Location: Mesa, AZ

Re: First Project | proLIGHT | Acorn Conversion

Post by martyscncgarage »

Cool beans! Thanks for posting the update!
Marty
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
citterly
Posts: 65
Joined: Mon Jun 04, 2018 10:05 am
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: Kalamazoo, MI

Re: First Project | proLIGHT | Acorn Conversion

Post by citterly »

Ballscrew mapping complete, very happy with the results.

Left side is before lash compensation, right side is after.
Original, open loop, steppers from proLIGHT 1000 machining center / mini mill.
Centroid Acorn control software.
eBay DRO

Showing Y Axis, 6" travel, results.
X & Z axis have very similar results.

https://www.youtube.com/watch?v=UcxK_5M5PLU

https://youtu.be/UcxK_5M5PLU
First Acorn project, proLIGHT 1000 mini mill:
viewtopic.php?f=60&t=1858
citterly
Posts: 65
Joined: Mon Jun 04, 2018 10:05 am
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: Kalamazoo, MI

Troubleshooting Dimensional Inaccuracy of Part

Post by citterly »

Some good news and some guidance needed.

Good news: I made my first part, it will be the end of a wrench used for ER16 collet holders. Being able to use F360 CAM is a win.

Needed guidance: The dimensions across the flats of the hex are not reasonably consistent.

BLACK: 0.983"
YELLOW: 0.999"
RED: 1.009"
NOMINAL: 1.000"

X = Left / Right (pic orientation)
Y = Up / Down (pic orientation)
0 / 0 = Lower Left
Climb Mill / Counter clockwise in pocket, finishing pass of 0.010"

The machine does have screw comp turned on, which had very good results during testing, within 0.0005" on position.

I'm wondering if maybe I'm losing steps? (Open loop steppers)
Maybe the lash is worse than I recorded?

Is there maybe a test part I can design and run that will help me determine the issue?

Thanks in advance !!
Attachments
50476233_10214253587276738_1083135935383601152_o.jpg
First Acorn project, proLIGHT 1000 mini mill:
viewtopic.php?f=60&t=1858
citterly
Posts: 65
Joined: Mon Jun 04, 2018 10:05 am
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: Kalamazoo, MI

Re: First Project | proLIGHT | Acorn Conversion

Post by citterly »

martyscncgarage wrote: Thu Jan 24, 2019 8:19 am Did you check backlash per this tech bulletin?
http://www.centroidcnc.com/dealersuppor ... ads/37.pdf

Can you describe the machine? Show a picture? Which stepper motors, Drivers, power supply, gearing?
You may have posted it elsewhere, but when you create a new post, the information is helpful to those of us that pour over MANY posts. I can't remember whose got what! :shock:

Marty
I'll go through the procedure today, thanks!!
First Acorn project, proLIGHT 1000 mini mill:
viewtopic.php?f=60&t=1858
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