Re: Tripod

Dear Michael, all and Graham Stabler:

I am writing in response to an article written by Graham Stabler on
kinematics and Mach 3 he gave a formula for a two motor, two cable
painting machine. I want to do a 3 motor, 3 cable machine. I could
study hexapods in an engineering class. I thought I might avoid that
by receiving wisdom from the group based on the pdf on kinematics and
mach 3. Emc2 and robofac can do hexapods but they run in linux.

Best Regards,

Andrew





--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Michael Fagan"
<woodworker88@...> wrote:

>
> You should try finding some information about programming a

Hexapod, which

> is like what you describe except 6DOF (well, at least 6 motors, not

sure if

> that would count as 6DOF in this case).
> Michael
>
> On 10/17/07, andrew777j2002 <andrewj777@...> wrote:
> >
> > Three axis tripod 2D painting robot
> >
> > Dear Graham Stabler and all:
> >
> > I have been observing, I am a newbie, Andrew.
> >
> > Please help I'm trying to determine the equations to be placed in
> > Mach 3 for two separate projects.
> >
> > I want to build a three axis tripod 2D painting robot.
> > I read your article about kinematics for Mach 3. My 3 motors will

be

> > placed 120 degrees apart with cable etc., could you explain and

give

> > the formula for the equations for a b and c. This will be cable,

wire

> > or toothed belt driven. I know a and b from your pdf I need to

know c.

> >
> > The next project would be 3-D.
> > Wouldn't a 3-D tripod use (mathematically speaking) three spheres
> > intersecting at 120 degrees, we then can use spherical

coordinates to

> > determine the radiuii of the spheres for the end lengths of the
> > cables.
> > If I am correct could you give me the equations to be placed into
> > Mach 3.
> >
> > Best regards,
> >
> > Andrew
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>