Re: [CAD_CAM_EDM_DRO] Re: what is 4 axis and 5 axis?

cadcamcenter wrote:

> --- In CAD_CAM_EDM_DRO@y..., J <jaredts@y...> wrote:
> >
> > I'll just give an example. A typical vertical machining center has
> a 2 axis table (x and y) and a spindle that moves along a third axis
> (z). Add a rotary table and thats a fourth axis. Add a spindle head
> that can rotate to an angle and thats a fifth.
> >
> > echnidna wrote:what is meant by the terms 4 axis and 5 axis and
> more ?
> >
>
> What terminology should we refer a cnc'ed Sherline 2000 which has "8"
> degree of freedom (they include the spindle rotation as 1 axis)?

The spindle is not an "axis", as it is not controlled. it just goes round and round.
The spindle swivel is also not a CNC axis, as it can not be moved while cutting.
It could be considered a manual axis, though.

>
> And if we fix the rotary table to the Sherline 2000? A 4-axis machine
> with 8 degree of freedom?

I don't know what this 8 degrees of freedom means. 6 degrees of freedom
generally means 3 translational axes and 3 rotational axes. The 3 translational
are standard. I really don't think the Sherline rotary table can be stacked to
get 5 axes. I think it would get very wobbly. Stacking 3 rotary axes turns out to
almost never be necessary.

Jon