Mazak micro slant 15

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21 May 2020 14:17 #168491 by tommylight
Replied by tommylight on topic Mazak micro slant 15
It is on !
A small tantalum capacitor decided to hog all the power for itself, so now it has one missing leg! :)
Finding a faulty 3X5mm capacitor on a 3.5 ton machine is not easy, but i do need the cardio.
Now X axis servo drive does not come on, all the parameters are lost since the battery went flat, lube pump is clogged .....
Will post some pictures later.

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21 May 2020 17:39 #168503 by Aciera
Replied by Aciera on topic Mazak micro slant 15
It has always been a bit of a mystery to me why these machines can't store those parameters in an eeprom. Those machine service guys must make a fair amount just going around punching those numbers back into systems where the battery has gone flat or where the battery change has not been done right.
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21 May 2020 20:02 #168518 by tommylight
Replied by tommylight on topic Mazak micro slant 15
Not sure eeprom existed at that time, prom did.
But i am pretty sure a lot of machines built at the time of eeproms still use the same battery backup system for good knows what reason, as price was not an issue on a 200K machine or more.

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26 May 2020 01:31 #168925 by tommylight
Replied by tommylight on topic Mazak micro slant 15
And another setback:
Had a deeper look at it today to morally get prepared for the retrofit and hit a snag, turns out it uses brushless resolvers so two things started running through my mind:
1 i have nothing i can use for that, so : PCW, help ! :)
2 Andy is gonna be happy, he loves resolvers
Just now thinking maybe Andy is right, so i should try resolvers, ..... or make mounts with shafts and bearings for the f.... encoders i do have.
F..... since they turned out to be the reflective type so any miss alignment will render them useless, paid 69 Euro a piece, and 2500PPR, have 5 of them, differential with index.
O what a mess ! :)

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26 May 2020 10:39 #168960 by tommylight
Replied by tommylight on topic Mazak micro slant 15
Yeah, it wont work !
Bloody hell, this is getting to be the game i never opted to play!
After some more research, it uses a type of resolvers that will not work with Mesa resolver card, so the only option left is to make some new mounts for the encoders. Good thing is they are attached to the screw, not to the motor, so much easier to work with. Bad thing is the afore mentioned encoders and making mounts for them with hand tools will be quite a joy. :)
And then there is the issue of the missing chuck, used ones go fro anything from 700 to 2000$, and for sure i am not dropping all that for some used part that might never work/be bent/off centre/messed up threads/etc. New one is 7900$ so that is out of the window from the get go.
New direction:
Mazak Micro Slant 15 parts for sale, computer, screen, UL52 controller, Tamagawa resolvers 3 of them, all in perfect working order !
Or exchange for a good hydraulic chuck and a TRA30 servo amplifier.

Seems much more reasonable. :)

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26 May 2020 10:42 #168961 by rodw
Replied by rodw on topic Mazak micro slant 15
Tommy, before you give up, check what Jon has for resolvers at Pico systems.
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26 May 2020 11:03 - 26 May 2020 19:27 #168966 by tommylight
Replied by tommylight on topic Mazak micro slant 15

Tommy, before you give up, check what Jon has for resolvers at Pico systems.

I am pretty familiar with normal type resolvers and how they work, these ones use the opposite in that normal resolvers have one input and two outputs shifted by 90 degrees, these ones use two inputs shifted and one single output.
I also checked if they can be wired differently, they can, but will not work.
Still, Jon, heeeeelp ! :)
Last edit: 26 May 2020 19:27 by tommylight. Reason: typo

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27 May 2020 23:40 #169173 by tommylight
Replied by tommylight on topic Mazak micro slant 15
Started making some mounts and housings for the encoders, made 3 shafts on the manual lathe and found out that it is way out of whack so some adjusting is in order tomorrow and another run of 3 shafts.
As luck would have it the shaft on the resolver is 9.5mm, hence the need for lathe. Damn, i had some nice shafts at 8/10mm that would have been just cut and mount, but nooooo i can not have it that easy ! :)
This all might sound a bit on the "complainy" side, but i am having a blast, despite all the aggravation of waiting for parts i did manage to fix a lot of stuff that was waiting for the right time ( read never ), so now i plenty of MIG and TIG welders that i rarely use, i have a working plasma cutter since the last one i had went with the last machine i built, made plenty of machine parts, etc etc.
Getting "ranty" again.
Good night all .
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