Ballscrew Installation

Message: 19
Date: Mon, 21 Feb 2000 14:00:56 -0800
From: "Bob Campbell" <bob@...>
Subject: Re: Re: Ballscrew Installation issues

Andrew,

I would make sure that the X and the Y assemblies have the same number of
turns per inch.

[Thanks Bob, that makes sense. I suppose it's possible to use a different
ballscrew for the z-axis assembly, since it doesn't have to coordinate in
quite the same way? How does one tell EMC (or CNC Pro) to take the
difference into account? Can I use a different motor on the z-axis as well?
]

BTW, I just got my dealer copy of ModelMill in. I plan to go to Colorado
for training next month.

Bob Campbell

[Be sure and tell us what you learn there. I went with Cimagraphi myself
for 2-d to 3-d conversion, but I'm still getting up to speed with it. It
seems to have more features than ModelMill, but it's correspondingly more
expensive.]

Andrew Werby

----- Original Message -----
From: Andrew Werby <drewid@...>
To: <CAD_CAM_EDM_DRO@onelist.com>
Sent: Monday, February 21, 2000 2:50 AM
Subject: [CAD_CAM_EDM_DRO] Re: Ballscrew Installation issues


> From: Andrew Werby <drewid@...>
>
> I'm shopping for a few good used ballscrew/linear motion assemblies
> (preferably already assembled) for a router I've got in mind, and I was
> wondering: do these have to match in screw pitch and inches traveled per
> revolution? While I'd prefer to have everything the same, it seems
> difficult to procure matching slider assemblies. Is it okay to get these
as
> they come up, and trust that I'll be able to reconcile their differences
in
> the software setup? Or should I hold out for matching parts? Does this
vary
> between control systems?
>
> What about motors? Is it possible to combine different stepper motors in
> the same machine, and expect them to operate in tandem? Is it any easier
> with brushless DC servo/encoder combinations?

Andrew Werby - United Artworks
Sculpture, Jewelry, and Other Art Stuff
http://unitedartworks.com