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  #31  
Old Sat 30 March 2019, 08:14
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Thank you again Robert

I will focus my effort to find a solution for this !
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  #32  
Old Mon 20 May 2019, 00:34
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Hi all,

Finally, I am back again to work in the machine, so I taught I would share some of the advancement.


--> I found a solution for the previous problem of the damaging that was happening to the V-groove wheels bearings. As it turned out that this was due to fabrication tolerance. In fact no matter how careful is the method of the insertion of the bearing, once it is inserted it stops turning smoothly. So i grinded the inside of the wheel a little bit with a Dremel tool using a sanding bit. Then I applied some Loctite glue and the problem was gone.


-> I redid one of the X rails as it was a little bit out of tolerance. For that, i bought a melamine white panel as Guille and Mike adviced in previous posts.

--> transferred the holes from the old rail to the new one.

--> I also welded the Y-car.

I have now a rolling X and Y axis. Here you go a link to a video showing the advancement
https://youtu.be/lYa0f33XdGE

Best regards.

And here are some pictures :
Attached Images
File Type: jpg Y-car1.jpg (179.6 KB, 391 views)
File Type: jpg Y-car3.jpg (180.7 KB, 385 views)
File Type: jpg Y-car2.jpg (155.3 KB, 387 views)
File Type: jpg x_rails_hole_transfer_2.jpg (153.4 KB, 383 views)
File Type: jpg x_rails_redid.jpg (128.6 KB, 382 views)
File Type: jpg overall.jpg (140.9 KB, 383 views)
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  #33  
Old Mon 20 May 2019, 05:15
jhiggins7
Just call me: John #26
 
Hebron, Ohio
United States of America
Nice progress, motion looks smooth.
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  #34  
Old Thu 23 May 2019, 15:19
danilom
Just call me: Danilo #64
 
Novi Sad
Serbia
Bravo !
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  #35  
Old Tue 28 May 2019, 10:26
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Rack attached to rail

Hi

Some progress

- The Y rail rack is attached
- X rails racks in pgrogress

I also ordered the following :

- 2 x Clearpath Servos CPM-SDSK-2310S-RQN for the X-axis
- 4 x 5:1 Timing belt reduction Kits
- 1 x Acorn Centroid Controler

Waiting for these orders to arrive, I will work on CAD for the Servos plates adaptation (NEMA 23 version). I will post some pictures for the CAD solution once completed for criticism.

Best regards.
Attached Images
File Type: jpg Y-rail_rack_attached.jpg (109.3 KB, 348 views)
File Type: jpg Y-rail_rack_attached2.jpg (150.8 KB, 346 views)
File Type: jpg Y-rail_rack_attached3.jpg (144.0 KB, 353 views)
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  #36  
Old Wed 29 May 2019, 21:09
xraydude
Just call me: Ted #131
 
New Orleans, LA
United States of America
Looking great! I was too scared to mount my racks to the rails off of the table. I had to rig up a clamping system to get them close then slowly stick them on with the rails already mounted on the table. That 3M tape doesnt mess around! Keep up the good work.

Ted
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  #37  
Old Thu 30 May 2019, 05:49
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Thanks a lot Ted . It is indeed a scary process.
I didn't find the 3M tape hear in Morocco. I found one of BISON that i will try as a replacement. Link :

Some other updates :
- The package containing the Acorn controller has arrived to Morocco and it is now blocked in the airport because I must find a way to clear the customs declarations.

- As for the Servos they are still in transit

- The Timing belt are still not shipped from china

Best regards
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  #38  
Old Fri 23 August 2019, 03:51
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Hi all

Sorry for not being able to post in the last months.

Here is an update of the build !

- The painting job was done last month.
- Adaptation plates were designed and tested
- Motion was tested using an old Nema 23 stepper
- Chaine carriers were purshased (used) and installed.
- Technic Clearpath Servo were tested using the manufacturer's software but cables are not yet made (I didt'n purshase them to save extra money).
- A control box containing Centroid Acorn system was wired and tested using stepper.
Attached Images
File Type: jpg img_20190701_134346.jpg (225.9 KB, 292 views)
File Type: jpg img_20190701_172543.jpg (234.9 KB, 289 views)
File Type: jpg img_20190704_143914.jpg (257.9 KB, 285 views)
File Type: jpg img_20190704_150616.jpg (239.1 KB, 296 views)
File Type: jpg img_20190822_202421.jpg (235.7 KB, 295 views)
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  #39  
Old Fri 23 August 2019, 16:04
xraydude
Just call me: Ted #131
 
New Orleans, LA
United States of America
Abdelkabir, great to see the progress! Any pics of the control box?

Ted
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  #40  
Old Sat 24 August 2019, 18:52
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Hi Ted

Here are some pics for the control box
Attached Images
File Type: jpg Webp.net-resizeimage.jpg (271.3 KB, 272 views)
File Type: jpg Webp.net-resizeimage (3).jpg (278.6 KB, 274 views)
File Type: jpg Webp.net-resizeimage (4).jpg (243.4 KB, 279 views)
File Type: jpg Webp.net-resizeimage (5).jpg (243.6 KB, 281 views)
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  #41  
Old Thu 29 August 2019, 19:04
xraydude
Just call me: Ted #131
 
New Orleans, LA
United States of America
Abdelkabir,

Are you running those transformers in parallel? What voltage are the secondaries?

Ted
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  #42  
Old Thu 29 August 2019, 23:50
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Hi Ted

I am running them in series. Each one of them is rated to deliver 12V on nominal current and 21V open circuit. So in series, I get 42V.

When running one of the servos I get 20 V in each one them (40V).

I have two others in the same specs in the shelf in case the first ones drop in voltage significantly.

Abdelkabir.
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  #43  
Old Mon 02 March 2020, 11:26
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
She's cutting :-)

Hi dear Mechmate community

I would like to annouce that we have made the first job on the machine today. It was wondefull feeling.

Indeed the machine is not 100% complete, but we needed to see the result of a long journey of hard work.

I would like to thank you all for your efforts and for making this project alive.

Best regards.

Last edited by bachaabdelkabir; Mon 02 March 2020 at 11:55..
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  #44  
Old Mon 02 March 2020, 12:20
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
Send a message via Yahoo to Robert M Send a message via Skype™ to Robert M
congrats "mate".....wishing you a fun & fruitful MechMate journey
All the best....
R.
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  #45  
Old Mon 02 March 2020, 17:05
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Well done.
Keep up the good work.
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  #46  
Old Tue 03 March 2020, 05:58
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
Well done!!! Moved thread to MM Already Cutting!!
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  #47  
Old Tue 03 March 2020, 07:31
baltaran
Just call me: Balta
 
Valencia
Spain
Excellent job Abdelkabir.

I can see those Clearpath servos nicely fit in your machine.

I wish you all the best with your project and I wish I could visit you one day when I am on holidays in Morocco.

Keep up the good work and all the best to you!!

Last edited by baltaran; Tue 03 March 2020 at 07:39..
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  #48  
Old Tue 03 March 2020, 16:17
xraydude
Just call me: Ted #131
 
New Orleans, LA
United States of America
Fantastic! Now the fun and learning really begins. Congratulations!
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  #49  
Old Fri 10 April 2020, 04:47
MarkRH
Just call me: Mark
 
Maryland
United States of America
Congrats Abdelkabir, how are you liking the acorn clearpath combo? , I am switching to acorn now. Do you find the nema 23 223oz motors strong enough? Does it cut smooth arches?
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  #50  
Old Tue 14 April 2020, 10:16
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Hi All

I would like to thank you all for the encouragement.

For Mark : I am very glad that I have chosen the acorn+Clearpath setup,

I would recommend for everyone who is willing to use these servos to spend some good amount of time fine-tuning them. I had some difficulties tunning the X-axis. If it is not it so, it will oscillate and generate some remarkable waves in the cut.

I would also recommend choosing slightly higher torque ones, especially for the X-axis. I remember that it was one-time shutdown signaling by led flashing that peak torque was exceeded wich is a good thing to protect itself. the thing that you will not find in open-loop steppers. It is also so quiet comparing to steppers.

Overall I am very happy with this setup, especially the acorn controller, the software is very professional and centroid tutorials are a good source for training.

I have to mention also that there is a free version of the software but you can not exceed 50 KB of G-code. the unlimited version costs about 140$.

Last edited by bachaabdelkabir; Tue 14 April 2020 at 10:25..
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  #51  
Old Fri 14 August 2020, 07:48
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Somme update to my build

Hi comunnity

I want to add somme update to my build:

- First I was working with a 600w router that was very noisy, but It was working fine with small dept of cutting and slower speeds.
- Then I decided to upgrade to a 3kw water cooled spindle and 4kw VFD.
after installing the new spindle setup i was exposed to new problems including :
- A lot of EMI noise witch coused the clearpath servos to shutdown frequently. when connecting the MSP software (clearpath's diagnostcs software) to these servos, i have found the error : "Input timing error". after a lot research in net i came up with the solution of shielding all the signal cables and installing a noise filter in the input of the VFD. so i redid all the cabling in machine and put the vfd in a separate metallic box connected to ground.
- the second problem i am facing right now is to find a soutable gas spring that compensate the weight of the new spindle.
- the third problem is the difficulty to have smooth arches : i have mentioned that before, but after fine-tunning the waves in the cuts are reduced but not eliminated totally. I think the problem is caused by the undersizing of servo's power and mechanical inefficiencies.

Best regards
Attached Images
File Type: jpg Capture.JPG (67.3 KB, 75 views)
File Type: jpeg WhatsApp Image 2020-07-14 at 00.09.56 (1).jpeg (59.9 KB, 78 views)
File Type: jpeg WhatsApp Image 2020-07-14 at 00.09.56.jpeg (61.2 KB, 75 views)
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  #52  
Old Tue 18 August 2020, 02:31
MarkRH
Just call me: Mark
 
Maryland
United States of America
Abdelkabir, teknic recommends a 75v power supply, they also recommend keeping control and supply grounding separated. If your motors dont have enough torque you should see them fault out with that.
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  #53  
Old Wed 19 August 2020, 14:14
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Hi Mark

Thank's a lot for you reply.

I am using a linear power supply providing about 60v and enough power (watts) to feed all the 4 servos. And I am also separating the servos supply groud from the control one.

As for the smooth arches problem, I found in technic's user manual that the suitable steps per revolution configuration for the non-enhanced servos must not exceed 800 step/rev. So when i changed that from 3400 to 800 and redone the auto-tuning the servos where so mutch stable after that.

My biggest problem right now is EMI witch is confusing the servos when the spindle is on. I am trying different solutions right now like grouding/sheilding/filtring.

Best regards.
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  #54  
Old Tue 08 September 2020, 03:35
MarkRH
Just call me: Mark
 
Maryland
United States of America
Abdelkabir, please post what you find with that because teknic does not spec sheilded wire for their motors, But you definately should on the vfd. Are you using their power hub? Ive found their tech support great.
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  #55  
Old Wed 09 September 2020, 04:34
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Hi Mark

The machine is working verry well right now. I have found that the problem is the efficiency of the diy shielding that I have done before. in fact, a I used aluminum tape for all the wires (control and spindle), but it turns out that it wasn't good enough to stop the EMI from the spindle and the VFD.

So I redid the wiring one more time but this time with a DIY proper sheilding using a metal wire mesh from a coaxial satellite receiver anntena. I removed the the interior and kept the mesh. and the problem was gone.

I sheiled all cables : Spindle one and also control and signal ones I don't know if it was necessary to sheild the signal ones but I did it anyway to avoid capturing EMI from any external device.

As for the technic's power hub I am not using it.

Unfortunatly I have a bad news : when I was redoing the wiring for the third time, a friend of mine was helping me and he reversed the polarity of one the the servo's power supply line. As a result that servo didn't survive that.

I didn't contact technic's support yet because anyway I must resend it to USA from morocco. And I can't handle this expense right now. So I mounted a simple 2.2 A nema23 stepper as a temporary replacement and it working right now.

I will try to post some pictures soon.

Best regards.
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  #56  
Old Wed 09 September 2020, 04:49
bachaabdelkabir
Just call me: Abdelkabir
 
Casablanca
Morocco
Somme pictures showing the sheilding

Somme pictures showing the sheilding
Attached Images
File Type: jpg Sans titre3.jpg (74.1 KB, 31 views)
File Type: jpg Sans titre.jpg (46.6 KB, 32 views)
File Type: jpg Sans titre2.jpg (93.0 KB, 32 views)
File Type: jpeg WhatsApp Image 2020-09-09 at 11.38.50.jpeg (54.8 KB, 32 views)
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  #57  
Old Sat 12 September 2020, 05:23
MarkRH
Just call me: Mark
 
Maryland
United States of America
With the proper vfd filter and wire you should not have needed sheilding on motor wires. I am about to switch mine over, will let you know what I find. Thanks
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