Yep, my design.

Got finally most of wiring job done and it moves.
Attachment 16265
And today started assemblying spoilboard.
Attachment 16264

I having some kind of problems with those Leadshine closed loop steppers. They are making sometimes weird noises, and if i rush them drivers are getting very hot. I wrote to reseller, seems what they answer. But i hope that i did not buy for 2000 euros pile of crap instead of high end steppers.
Running on 10000mm/min
https://www.youtube.com/watch?v=ud2LOupiKAw
Running on 8000mm/min
https://www.youtube.com/watch?v=WjY_z5t57Oo
There isnt even no possibility for bad contact etc, because i did not use connectors. Wires are soldered together.

I hope you get the problem worked out. You have more in motors, than I do my whole build already. I watched the videos-Nice.

Spoilboard is ready and surfaced
Attachment 16274
Attachment 16275
Attachment 16276
Attachment 16277
First test cuttings made too:
Attachment 16278
Bought from ebay tool setter for Z axis. https://www.ebay.de/itm/IP67-CNC-Aut...72.m2749.l2649 Repeatability is as promised. 0,001mm. I added this upgrade to #38 too.
Attachment 16279

Still having problemis with motors. Lowered driver current settings, as Leadshine reseller suggested, strange sounds are disapered, but now i havent any power anymore. It is able to move max 6000mm/min, higher speeds stalling problems appear. On same time drivers are coing very hot. Everything what is possible to test is tested, even took computer, smoothstepper and BOB from #38 to be sure that problems arent on input signals to drivers. Now ordered one more motor -driver set what is tested for Leadshine Germany reseller and is working. When it arrives can i go on and find out what is causing problems.

Ivo your work is amazing.

Got on friday new and tested driver-motor set. With new driver everything seems to work fine.

Motors stalling due too large postition difference, it was able to move max 8000mm/min, stalling on 10000mm/min :
https://www.youtube.com/watch?v=ynruS3uWVhA

on 75% current setting extreme jerky movement, but due encoders and closed loop system there is no position loss on stop:
https://www.youtube.com/watch?v=wP7aPyxdEtQ

Installed new driver and now i am able to move axis 20000mm/ min and more without any problems:
https://www.youtube.com/watch?v=Zyxa15ml2Go

Now i am waiting what Leadshine reseller is answering.

Glad your getting it sorted.

Sent drivers back to reseller. Now i am waiting their standpoint on this case.

Got new drivers, and its running again. Now its working smooth and without any strange noises, vibrations etc.
Those 3 phase steppers are quite powerful. Tried to move axes 50000mm/min - no problem. But limited max speed to 8000mm/min. Safety first, and i am sure that running it so fast will broke something soon.
Second good thing, they havent resonance on any speeds. Cuts are on all angles perfect. I cant say that for chinese steppers/drivers what are on #38.
Also ordered stickers for number.

Alrighty Ivo. Anxiously waiting, to see it cutting stuff. I am watching and learning.

And it is down again. Spindle VFD starting to give e.oc.n error messages. According to google propablly bad current sensor inside huanyang vfd.

Checked socket and wire connections. Nothing did not seem loose but tightened everything and it is working again. Lets hope that it will be so. It may be socket what connects wire to spindle. Earlyer i had on #38 2,2kw spindle (now both have 3kw unit) and that 2.2kw original socket was problematic. I threw it away and soldered wires directly together. If problems again appear, seems that i should to it again. I hate pluggable sockets on CNC. Always they are source of problems.

So you think is better to not use connectors, and to solder the motor wire connections as well.

Well... There is lot of industrial connectors what are very good. But usually those connectors what are coming with chinese stuff are problematic. At least my experience is saying so.

Yes. I was going to buy connectors, but have decided to go with the heat shrink but joints. They have lasted well (10 Years) on my other machine.

I use Amphenol connectors. I replaced the originals. I have it posted about those in Tom's thread here

coonectors
 

hello Ivo, I also replaced directly the connectors from the chinese spindle by emphanol connectors.
I used emphanol for the spindle and harting Han for the motors. on the machines build by the company I work for , we use a huge ammount of connectors. never saw anny problem wiht emphanol or harting. avoid lemo connectors...
The wires are shrinked to the pins. at home, I do soldering. once had the problem that a small soldere wire (when removing the soldering rod) makes shortcut between the pins. Now I u:cool:se my glasses during soldering
You have a very nice z axis

Amphenol connectors. Thank you for pointing it out to me. I do really appreciate it.

aircraft use only crimp wire to wire connections (with proper crimping tools)

archie

I had little debt. Missing stickers.
Attachment 16309
Attachment 16310
Milling sprockets from 7075 aluminium sheet: https://www.youtube.com/watch?v=m9hT5NXK0Ng
5mm one flute endmill
Spindle 24000rpm
Feedrate 2000mm/min
Stepover 3mm
Stepdown 0,7mm
Those are "safe" settings. It can cut aluminium long hours without breaking endmill. At #38 was safe to cut 7075 alu 2x slower due flex.
Result:
Attachment 16311
Attachment 16312

Nice work.
I will try aluminium when my spindle is running.

Wow. No lubricant?

Yepp, no lubricant. On shown settings is tool lifetime somewhere between 50-100 cutting hours. I have cut over years tens of tons alu sheets so. Maybe with emulsion it is longer, but i try avoid lubricants. Too messy

it's very impressive, nice job. have you a link for the one flute endmill?

Well... They are coming from Estonian reseller with product code what does not lead nohere and here have they EcoStar trademark. Again google isnt sayng nothing.

Sometimes they have engraved Cerin on them and i quess they are 110A.050051450 http://www.cerin.it/catalogue.pdf Page 150

My quote to Cerin had answer that go and buy from your local reseller, so ... propablly they are that ones.

ok thks i will take a look.

Made some rope driven blast gates. I think they are better than regular push-pull type gates.
Attachment 16333

Attachment 16334

Attachment 16335
To prevent static electricity buildup i grounded gate. Black material is PE
Attachment 16336

Serial number for second Mechmate?

Sure looks like you get #130 !! Cool to see two working side by side!

Builder's Log Update
 

Congratulations on completing your 2nd MechMate. Here is the Updated Builder's Log with your 2nd MechMate entry added. Please review the entry and let me know any changes you me to make.

Well done #130.
Have fun.

I have here some kind of strange problem here with my new MM.
X axis gear is totally worn and gear rack looks worse than my 9 year old #38 gear racks. A and Y axis gear/racks are looking as new. All of them are from same source. Nothing does not seem to be misaligned .... Does anyone have idea what may cause it??
Attachment 16346

Attachment 16347

Wooow....can't confirm & no "metal" guru.....
But....say, in my case it was a question of how "tight" or say, how strong is the spring tension "up pulling" the motor to rack ?!
Surly you have check this & fully aware of this, but, sometimes I too tend to oversee the most "obvious"...:rolleyes:

Best of luck... ;)

I would contact the original manufacturer, the alignment and count look good and that makes me think the gear was not properly hardened.

All three axis have same spring and tensioned equally. And weared is only one gear, so reason cant be over tensioned spring.
I will ask what is answers have gear/rack seller.

If I had to guess and this is only speculation I think your gear did not go through a hardening process after it was machined. It became the weakest link and wore out first. You can run a file over it and see how much metal it removes compared to your other gears.

Ok i will try how much it is softer. But all gears what i have used on both mechmates arent hardened. On #38 is gear lifetime 2-3 years hard work.

I made sprocket milling video

nicely executed, love it Mate @_# !!

:) very nice
well done!