Re: [CAD_CAM_EDM_DRO] Re: Best source for Servo's ?? worm gears ?

> inertia. Gearing the motor down too much can actually reduce your
> acceleration.
>
> Les

/// I understand this in theory however, do not see it in practice. I've ran my motors right off the power supply capacitors to test ( I know, were not supposed to). The moment from dead stopped to full speed was a fraction of a second. The motors must be clamped to the bench to offset the counter-rotation of the servo body. This rotor inertia is basically non-existent in comparison to the slow moving equiptment that we usually design. Not much to even consider. ////Ron

I was pondering on the software in that with such a high rapid, the
warning switch should be a few inches in from the travel end.

I would hate to see 600 imp open the drive and freewheel that last
inch......

//// It would be simple to install an pneumatic brake. One could use the same type of brake band used on mini-bikes over any 4" dia. drum or roundstock. Mount an small air cylinder to actuate the brake and control the cylinder with an electrically piloted valve tied into the E-stop circuit (These components can be found on Ebay dirt cheap). The correct way to configure this is actually hold the brake engaged with a suitable spring and the air cylinder must over-ride the brake to release it. It works no matter what the situation is. These are quite common (better brake components obviously) on large and even small fast moving automation components. The same principle is used for brakes on large trucks as well.

/////Ron







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