Retrofitting a 1986 Maho MH400E

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6 years 9 months ago #155422 by drimaropoylos
Replied by drimaropoylos on topic Retrofitting a 1986 Maho MH400E
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6 years 9 months ago #155437 by Azzrael
Replied by Azzrael on topic Retrofitting a 1986 Maho MH400E
Thanks a lot Green,
I have checked it today, db was right, the shaft housing is excentric in order to provide backlash adjustment. I manage to rotate it and lock worm against gear (it was totally released so it rotated freely). Off course, table is locked, I will try to apply hydraulic pressure in order to release it and try to rotate. I am not sure about encoder destiny, as this MH was rescued from the flood, it was in the water approx 500 mm deep. Anyhow, it is worth a try. Thank you guys very much, you helped a lot. As this is my first Linux retrofit, probably I will have more question, but promise I will try to find most of answers by searching here before asking. Since I am new on this forum and asking for favor in first post, I feel a bit shamed, but hope I could return soon.
I am in Belgrade, Serbia
Thanks a lot once again,
Cheers!
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6 years 9 months ago #155438 by Azzrael
Replied by Azzrael on topic Retrofitting a 1986 Maho MH400E

db1981 wrote: Hello,

For the table you have to lose the hydraulic brake.
With the Black Screw on the left of your First picture you can loose the Green pipe (with the handwheel attachaed on the end) .
This pipe You can rotate by hand (excentric) this is for adjustment of the Play beetween worm and gear .

I can post the manual Pages for the table next Week .


Thanks a lot db,
I have tried anything but rotating housing. I rotated handle as monkey, watching nothing happened :) So I decided to ask before start disassembling it. However, if you have some docs and you are ready to share it, I would like to have it.
Regards!
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6 years 9 months ago #155446 by J Green
Replied by J Green on topic Retrofitting a 1986 Maho MH400E
Azzrael
Only 500mm deep --- you may be lucky. The ROD is close to top of rotary table, Center of table - recessed hole having push on cap -- taper point screw forcing a ball into / clamping the vertical steel shaft attached to a bellows type connector that connects to the ROD.
You might consider coming up with a hand type hydraulic pump and pipe fittings for working on the machine . Something about 1/2 to 1 Liter volume.--- cobbel up a truck brake cylinder
Hope db1981 includes the parts list with the rotary table information.
Remember --- Photos earn points here:cheer:
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6 years 9 months ago #155449 by hanmon
Replied by hanmon on topic Retrofitting a 1986 Maho MH400E
Hi,

even if it was under Water it may be still intact.
Mine had a film of coolant inside, everywhere.
I washed it with brake cleaner and it's perfect again.

Cheers
The following user(s) said Thank You: Azzrael
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6 years 9 months ago #155450 by drimaropoylos
Replied by drimaropoylos on topic Retrofitting a 1986 Maho MH400E

hanmon wrote: Hi there,

counted my balls today ;-)
240, exactly. As the ballscrew nut has 7 ball returns I expected the Number to be a multiple of 7 minus one or two cracked balls. I don't know how to interpret that result.

Cheers


My old y axis ball screw with only 3 rows of balls left on it. I can measure 37 balls on every row.
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