Re: [CAD_CAM_EDM_DRO] Bearing question for ballscrew conversion

I, for one, would be interested in seeing it.
Trying to learn something of machine design.

-G

----- Original Message -----
From: Joe Vicars <jvicars@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, May 16, 2001 12:40 PM
Subject: Re: [CAD_CAM_EDM_DRO] Bearing question for ballscrew conversion


> Yes, if you do it at both ends the system is over-constrained.
> Thrust is handled at one end of the screw only. I have a section view of
a Series 1 table if you want to see it.
>
>
> cadman@... wrote:
>
> > As I layout my design for the ballscrew conversion, I'm wondering if I
> > need "Angular Contact" bearings at both ends. I'm thinking that only
> > one end needs to have two angular contact bearing with a clinch nut.
> > The other end can have a regular "single" bearing and let the lead
> > screw "float" here.
> >
> > What does the group think about this? I have a crude ASCII art
> > picture below.
> >
> >
> >
> > //////// ////////
> > | | | |
> > |bearing| |bearing|
> > | plate | | plate |
> > | | | |
> > ---| | | |------
> > | | | | | |
> > | ------ | | --------- |
> > |_| | | | | | |_|
> > | XX | | | | // | \\ |
> > | | |angular contact bearings-->| | |--
> > | | | __________________________| | | |<---nut
> > ------------------ -----------------______
> >
> > ______
> > ------------------__________________________-----------------
> > | | | | | | |
> > | | | | | | |--
> > | XX | | | | \\ | // |_
> > |-| | | | | | | |
> > | ------ | | --------- |
> > | | | | | |
> > ---| | | |------
> > | | | |
> > | | | |
> > | | | |
> > \\\\\\\ \\\\\\\
> >
> >
> > It would be hard to design a clinch nut at both ends of the screw. I
> > would need to use shims or something to get the spacing correct.
> >
> > CADMAN
> >
> >
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>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
> Post message: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
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> bill,
> List Manager
>
> FAQ: http://www.ktmarketing.com/faq.html
>
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