Re: degrees of freedom Was: Angle Iron Ways

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Raymond Heckert" <jnr@...> wrote:

>
> Look closer... If you have 'fixed' length struts (I mean really

fixed, not

> extensible or retractible) the platform cannot move. On a hexapod,

at least

> two adjacent struts must be extensible to have even one degree of

freedom.

> four adjacent extensible struts should allow you 3 degrees of

freedom, and

> all 6 struts movable should give you your 6 degrees of freedom.

...Unless

> my observations are greatly in error...
>
> RayHex
>

The struts do not have to change length you can change the position of
there bases as is done in hexaglides and triaglides and delta robots.

Graham