Re: [CAD_CAM_EDM_DRO] Air assist on Series II knee?

----- Original Message ----- >

> Well, 40 PSI equals the weight of the knee minus the drag of the stepper
> and leadscrew. It is hard to guess the relative proportions of drag and
> weight. You might try turning down the motor current and adjust air
> pressure until the motor stalls evenly in both directions. Or, you
> could disconnect the motor mechanically and find the balance pressure.

Hi,

Surely the pressure should be adjusted for each job to compensate for the
weight of the part being machined, or, at least, set to an 'average' figure
two or three ponds above the weight of the knee etc.

Ian
--
Ian W. Wright
Sheffield UK
www.iw63.freeserve.co.uk