Re: CNC Drill Bit Sharpener

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "mayfieldtm" <mayfiet@i...>
wrote:

> Someone posted this link on the Home Shop Machinist Groop.
> It's a video selling a way cool CNC Drill Bit Sharpener.
>
> http://www.darex.com/xps/xps-sharp.html
>
> Notice the homing switch operation.
>
> I want one, I want one, I want one.
> I'm going to comtimplate on building one.
>
> Dosen't seem it would be very complex.
> Could be mounted on my existing grinder.
> 3 axis with small size 23 step motors should be sufficient.
> Power Supply requirements probably would be low.
> Probably can use small inexpensive 2A driver chips.
> Thinking that the motor step rate is not very cryticle,
> making the use of a parallel port to supply the step
> and direction signals, even if it is riddeled with
> interrupts.
>
> My brain will probably pop when programing for the
> complex curves needed.
> I assume that these curves would be the same for small
> or large size bits of the same type.
>
> Tom M.

Really great idea !

If you're going to build one, let me know. I'd like to help... I
have plenty of drill bits for you to test with ! : )

Dave