Guizmo Wrote:
-------------------------------------------------------
> BloodBlight Wrote:
> --------------------------------------------------
> -----
> > I posted this on the other thread, but I thought
> I
> > would put it here as well:
> >
> > I changed my mind about a dozen times, but here
> is
> > my addition to the project:
> > [www.youtube.com]
> >
> > No belts or cables and no odd shaped gears.
> And
> > this can be simplified even more. You can
> remove
> > the need for the springs by adding a stopped to
> > the end of the rack gears and then putting them
> in
> > a sleeve past the arm.
> >
> > This means the gears would need to be longer
> (this
> > could be an issue as I think about 280MMs will
> be
> > the limit), and a very simple bearing could be
> > used.
>
>
> Hi,
>
> Could you plase post some images? I have no access
> to youtube.
>
> Thanks!
It was my drawing it on a some paper, sorry, I don't have any CAD drawing.
Basically you put in two rack gears mounted to hinging points on one arm with the threads facing each other. Then you place a gear on the other arm that size equals the distance of the two mount points (after taking into account the rack gears width).
As that gear spins, it moves the two points and equal distance in opposing directions.
The rack gears can be kept on the drive gear using ether springs and a bearing or by extending the gears further out and putting a sliding clip on the end.
Sorry, I bet that is clear as mud.
-------------------------------------------------------
> BloodBlight Wrote:
> --------------------------------------------------
> -----
> > I posted this on the other thread, but I thought
> I
> > would put it here as well:
> >
> > I changed my mind about a dozen times, but here
> is
> > my addition to the project:
> > [www.youtube.com]
> >
> > No belts or cables and no odd shaped gears.
> And
> > this can be simplified even more. You can
> remove
> > the need for the springs by adding a stopped to
> > the end of the rack gears and then putting them
> in
> > a sleeve past the arm.
> >
> > This means the gears would need to be longer
> (this
> > could be an issue as I think about 280MMs will
> be
> > the limit), and a very simple bearing could be
> > used.
>
>
> Hi,
>
> Could you plase post some images? I have no access
> to youtube.
>
> Thanks!
It was my drawing it on a some paper, sorry, I don't have any CAD drawing.
Basically you put in two rack gears mounted to hinging points on one arm with the threads facing each other. Then you place a gear on the other arm that size equals the distance of the two mount points (after taking into account the rack gears width).
As that gear spins, it moves the two points and equal distance in opposing directions.
The rack gears can be kept on the drive gear using ether springs and a bearing or by extending the gears further out and putting a sliding clip on the end.
Sorry, I bet that is clear as mud.