Re: [CAD_CAM_EDM_DRO] Re: turcite bed ways

Thanks Roland,
The client owns already a stock of original wipers that we will adapt to
the changes.
But you are sure that poly urethane is an apropiate material?
Isn't this the stuff you make soft female bending dies of? Then it is
including machinable with
aluminum mills.
Thank you for the tip.
Sven Peter

Roland Friestad wrote:

> Sven Peter,
>
> I've done some work in this area and one good way to help the problem is to
> take the time to make special "knife edge" wipers out of castable urethane -
> It requires taking the time to knock out a simple mold but can be well worth
> it in increasing the life of the machine - The wipers should be patterned
> after the "scraper type" wipers in common use on hudraulic cylinders but
> configured to the shape of the bedways - Once you have made a "quick and
> dirty" custom mold (easy using CNC) then you can even make up spare wipers
> easily and make sure that they change them once a year or whenever necessary -
>
> Roland Friestad



> By Sven:
> First: Make no lubrication grooves at the parts that travels over the edge!
> Second: Although there is only very little space at the end make wipers
> at the ends with commercial rubber wipers backed up with felt!
> These wipers will face the turcite and not the base as normally.
> Third: Put on the cross slide and the base at the edges small air nozzles
> that blow away chips and debrids.
>