re:backlash comp was Re: Climb Milling (again)

A good way to understand gap backlash compensation and answers a
previous post question is:

If you command the table to move the same as your backlash
compensation and you have no compensation value entered...the motor-
turns will just "take up the gap" and not move the table.

If you have compensation implemented, no matter what you command,
even less than the gap, and the table will move the correct commanded
amount.

Buck
In theory, and if correct algorithim etc....

--- In CAD_CAM_EDM_DRO@y..., Chris Stratton <stratton@m...> wrote:
> With regard to software backlash comp, if the value given to the
> software is correct and cutting forces are not moving the table
> around, then the move inserted by the software will not cause the
> table to move at all. Instead it will simply move the screw from
> contacting the nut on one side of the groove to contacting it on the
> other. Of course if the number you give it also includes something
> elastic like typical timing belt stretch, then all bets are off.
>
> Chris
>
> --
> Christopher C. Stratton, stratton@m...
> Instrument Maker, Horn Player & Engineer
> 22 Adrian Street, Somerville, MA 02143
> http://www.mdc.net/~stratton
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