I believe my personal choice of a low maintenance drive system for
a waterjet would be a cog belt. You would be able to minimize, if not
eliminate, belt whip by using a wider belt than the drive requires and
supporting along the length of the axis travel. Restoring original
drive specs 'could' then be as simple as replacing the belt.
I think cleanliness will be just as much of a problem with linear
drives as any other drive system. If the abrasive and dross are
anything like chips it will be IMPOSSIBLE to keep them out of
everything. I have rebuilt gearboxes on spindles. Sometimes you must
open the gearbox again before starting the machine. I have found chips
in an unused, rebuilt gearbox. I am not sure the chips were not
dropped into the box during the reopening but the point is - whatever
the product of the process - it will contaminate the whole machine. I
suspect the problem will be worse as you will have large amounts of
much smaller size particles.
That being said, I like your idea of pushing the envelope. That is
why I like EMC. It will do whatever you want to do and have the
horsepower to do. And when you don't have the horsepower the
developers will contribute their horsepower to your project.
thanks
Stuart
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