Re: Knee for z-axis control?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers <rogersmach@y...>
wrote:

> I said I was done with this but, I just can't resist :-)
>
> 200 pounds on one end of the table and cranked all the way out?

Thats really grasping for a negative result. I'd never do that to a
mill. I think you have the ways lock and ways adjustment confused.

That's being realistic about what someone will try to do at home with
a CNC Bridgeport and no other larger equipment available.

A 6 inch mill vise alone weighs between 75-100 pounds. I can't
imagine not trying to put two vises on a CNC Bridgeport table,
leaving a section on the end of the table for a 5c indexer or table
clamping, drilling or whatever. Obviously it would be better to
mount them balanced on opposite sides of center (over the knee
screw), but to save a setup, some might not. I'm old and lazy, and
don't relish the idea of lifting 75 pound vises up and down from/to
the mill table.

The point is that a Bridgeport is designed to hold this kind of
weight and more, and if dual vises is in your future plans, you ought
to think about that when you do your CNC retrofitting.


Fred Smith - IMService
http://www.cadcamcadcam.com/hobby