RE: [CAD_CAM_EDM_DRO] Re: Ideas needed: techniques to reduce Z axis slop:

Lee,

Just reduce the pressure on the air assist on the knee and let some of
the table weight keep the bevel loaded on the same side of the teeth. It
will totally eliminate the backlash on the Z axis. The downside is your
Z axis speed will be reduced a little. The upside is it is free, can be
implemented immediately, and requires no modification to the machine.

Tim
[Denver, CO]
Sherline products at Deep Discount
Mach1 & DeskCNC with credit card ordering
www.KTMarketing.com/Sherline
Now selling Visual Mill 4.0

> -----Original Message-----
> Hi Jon,
> I like the idea to modify my quill for a ballscrew at some point. I
> also like the belt idea, but it will be hard to do, there's a casting
> around the knee ballscrew bevel gear, so it would be a major machine
> mod. I'm going to scope it out today to see how I might do that. Also
> I came up with a thrust bearing idea to push the bevels together with
> an adjustable spring tension that will be easy to implement, but as
> the bevels wear it may not last? I bet it will be ok for many years
> of my usage...
>
> -Lee