Retrofitting a 1986 Maho MH400E

RotarySMP wrote: I agree with that. I still haven't seen any details on the internet on how to remove a Maho ball screw pulley. I know there is some sort of expanding collet which holds them, and there is a trick to removing them, but am not sure what the trick is.

Is it a taperlock by any chance?

www.bearingboys.co.uk/5M-Taperlock-Timin...iming-Pulley-21464-p

If so, then there are two screws and half-threaded holes in the pulley. Tightening the screws pushes the bush in to the taper and locks the shaft.
To remove it you take out the screws and put one of them in the other slot, which is half-threaded in the bush. Then tightening the screw pulls the bush out.

Or perhaps it is:
www.fennerdrives.com/trantorque/

Or maybe something altogether more Germanic?

Hi Andy,

I think it is something they came up with themselves.



Might be as easy as loosening the 6 cap screws on the4 hub cover plate, but I read somewhere there is more too it than that.
Mark

RotarySMP wrote: Might be as easy as loosening the 6 cap screws on the4 hub cover plate,

There doesn't look to be anything else that you _can_ do other than unbolt the hub plate.
But I can imagine those grip rings might not want to release. There looks to be no chance of pushing the pulley in further to loosen them, either.

I'll find out soon enough. I really need to get of my arse and make the dolley, pull off the control module, elctrical cabinet, splash guards, table and cross slide and move it out of my garage into the machine shop. It will be good to be able to use the garage for all the dirty jobs (welding, grinding, tool grinding, sandblasting and painting) without having to cover and worry about the MAHO.
Mark

Hi,

of course, I will document everything when I disassemble the ballscrew, table and Main-Spindle.
My pendant will use the Mesa 7i73. Yes, It looks similar to Toms SImple Handwheel but doesn't use Peter's PCB.
I wanted buttons for my 4th and a later 5th Axis, tool-release and coolant and therefore would be too "small".
See my scribble:

Glemigobles & the MAHO gang

" EDIT: watching the automated subtitles on YT videos really sucks. " To me that is stating it nicely! But I barely understand English as a 1st language :laugh: You people having multi language skills are really lucky .
Removing the vertical head --- Have thought about making a steel plate to bolt on where the vertical head attaches and that plate having some type of jib-crane welded arrangement for lifting the table - vertical head - heavy stuff. Think I may be the Wimp of this group !
Glemigobles I thought you have a MH500E ? Was looking at my MH600E parts list and noted that reference to 500 - 600 - 700 vertical heads being interchangeable , just what the parts list notation noted.
Your hydraulic pump ---- Would be interested in what work you were doing to the pump . Does your machine have a tool changer? Hope your hydraulic leak is only a loose fitting .
Re scraping a MAHO does sound like a very big job. And yes my machines have a collection of the magic shims. I think finding a unworn/affordable machine is like looking for unicorns. When Mark mentioned that a MH400E was for sale ,I started to wonder what is involved for getting a machine sent to the U.S. I bet the payment - packing - shipping - customs would be a night mare.


Mark --
My 600E uses SPETH clamping sleeves type DS but noted that "Spieth" has a Type AK / IK an AL / IL clamping sleeve that may be what was used in your 400. Have read that the DS type can only be used one time which seemed strange to me. I removed a Speith DS clamped pulley from a servo motor, an just loosening the allen bolts didn't cause the clamp to relax enough . Had to lightly tap on the pulley before it released. Next time I will try to spray cool the clamp -warm the pulley .
Thanks for noting Hanno showing the hand controller and also Talla83's circuit board . Looks very interesting and I do intend to check into it.
What is the latest progress on the tool height addition? Hope you go into more detail about your lathe conversion -
My vote for your shop is still to enlarge the door. Could some "Bengay" along with a "Getter-Done Sticker" help?:laugh:
Cheers
Bob
P.S. Remember watching cast iron being poured into a small mold with a platinum-platinum/rhodium thermocouple (inside a quartz test tube) for trying to determine what the melt chemical make up was. Liquid phase to solid - time temperature