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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