Re: [CAD_CAM_EDM_DRO] Bring NASA in ( was Re: oz*in NOT oz/in

At 03:46 PM 4/17/02 -0000, you wrote:

>might think. The lead angle of the screw, rather than the pitch,
>determines to a large degree how much force you can multiply. So a
>1/4-20 will yield less force than a 1/2-20, for the same torque. But
>the 1/2" one is a trade-off with more inertia.

The lead angle is dependant on pitch and PD. But the torque available is
also dependant on PD. Hence pitch dia drops out of equation. Hence helix
angle does too.


Regards, Hoyt

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