Subject:
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Re: gear pulley/release system
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 27 Jun 2003 11:44:13 GMT
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Viewed:
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1036 times
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In lugnet.robotics, Bruce Boyes <bboyes@systronix.com> wrote:
> Quoting scott davis <rcx2man@hotmail.com>:
>
> > I just thought of an idea, haven't had time to try it out but here it
> > is.
> >
> > What if you were to have a sliding worm gear that would wind the arm up
> > when
> > the motor was powered forward and release it when the motor was powered
> > reverse.
>
> Some of my students did this very thing. They used one motor to wind up a
> spring which was then released to kick a ball. Worked well.
>
> Bruce
I did a device like this, where the motor ran a differential, which was then
used to wind up and release the axle that did the work. One
differential output shaft did the winding, and the wound-up axle was held for
firing by a gear and ratchet on the end opposite the winding end. This
allowed the device to remain cocked indefinitely and without depending on
the motor to hold it. When the motor was reversed, the other
end of the differential turned an arm that tripped the ratchet, releasing
the wound-up axle.
Jim
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Message is in Reply To:
 | | Re: gear pulley/release system
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| Quoting scott davis <rcx2man@hotmail.com>: (...) Some of my students did this very thing. They used one motor to wind up a spring which was then released to kick a ball. Worked well. Bruce (21 years ago, 27-Jun-03, to lugnet.robotics)
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