Gallery, Projects and General > The Design Shop
Portable milling/grinding machine for machine way reconditioning
RotarySMP:
If I read it right, your longest slide is 500mm with .4mm max wear. Why not use a mill or shaper to hog it, then scrape the rest?
Mark
PekkaNF:
Table is the longest item, it has 1000mm of guide ways - dove tail type. I asked around and 500 mm would have been easy on table size, but 1 m is bit long for any of my friends. And then there is then knee, it does not fit on normal milling machine.
I have been checking the dimensions and the knee is awkward. Then there are the flat upright square ways, about 1000 mm long on the milling machine frame. Plan is to measure first to see how much and where wear is, before doing anything on it.
Anyway, most wear is on the table x-axis and that is most challenging: longest, most wear, dove tail and even if I pull it off, I still have to refit the screw.
Pekka
RotarySMP:
How about milling out pockets in sections on a smaller mill, to get the necessary depth for Moglice? Moglice wont care if the bottom of the pockets have steps, and this way you can keep the screw centerline.
If the Knee is not as badly worn, just scrape it.
Mark
PekkaNF:
--- Quote from: RotarySMP on May 11, 2016, 09:32:20 AM ---How about milling out pockets in sections on a smaller mill, to get the necessary depth for Moglice? Moglice wont care if the bottom of the pockets have steps, and this way you can keep the screw centerline.
If the Knee is not as badly worn, just scrape it.
Mark
--- End quote ---
That is like plan B vs, scrapping it. I don't like moglice, because I don't know what it is how it works. Makes me feel iffy.
Is't it stuff that has big part epoxy, some solvent and then some lubricants like MOS, graphite and some metalic bearing material like coppermetals and maybe teflon?
Solvent makes it shrink and deform a little, metalic particles need oil lubrication and teflon - I don't get it.
Logical step would have something like that to cast over epoxyconcrete. And it looks like it has been considered. Even googled recepies of home made moglice type castable bearing material. It's distracion in it's own right.
Hanermo: Where you got that "elmukelmu"? It's Finnish for a cling film wrap. Not very international word. You got me thinking that I have seen very nice surface quality on samples poured into a disposable plastic cup. Those are made out of PET, PP or PS. Probably more. PP and PET family seems to be difficult to glue with epoxy and therefore pretty nice material to prevent polymer casting from gluing into mould.
Pekka
hanermo:
You could also solve it easily, and for maybe 200€, in one hour (or even less, depends).
Contact Grönbloms, the local HFO or Haas rep for Finland.
Ask, from sales, for a recommendation to one of their clients with a HAASF VF5 or bigger, who would be happy to do a small one off job, and plane the ways.
They are nice guys, and are ime, imho, always happy to recommend clients who will/can do work like this.
Ie recommend a machine shop that is happy to work with one private individual, on a one-off, and who has a big enough machine, with 1 m+ table travel.
The machine shops tend to do these jobs in between, or on slack time, and if you are not in a big hurry they can do this cheaply.
They also get favourable publicity, and this tends to bring in more work, later, and good word of mouth.
A single pass with a suitable cutter should leave the ways within 0.01 mm or so, overall.
Eiks kaikki sitten puhu suomea, vai mitä ?
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