[TheForge] power hammer

Fri Jan 16 19:08:01 2004

Andy, Did they run the motor direct to the pinion? or cut it with Jack shaft
or pulleys to reduce speed of electric motor?

Ralph
----- Original Message -----
From: "Andy Vida" <[email protected]>
To: <[email protected]>
Sent: Friday, January 16, 2004 5:56 PM
Subject: Re: [TheForge] power hammer

>
>
> Dann Johnson wrote:
>
> > Reading / hearing of a disk brake used as a clutch just doesn't turn any
> > lights on for me. I can imagine that a good brake  will stop / stall out
an
> > electric motor, but that isn't the same  thing as a clutch.
>
> I'm thinking perhaps you are misunderstanding the manner in
> which the disk brake is used.  The motor drives the pinion
> gear of the differential.  Because the load on the ram is
> heavier than that on the unengaged disk brake, the disk
> spins.  As soon as you clamp down on the disk, the load on
> the ram being now less, the axle to which it is attached
> starts spinning and the hammer runs.  It's a simple matter
> of rerouting the drive energy from one axle to the other.
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