Re: [CAD_CAM_EDM_DRO] zeroing z

What works for me...... if you have a "crank" on the Z axis stepper, while the the machine is on (no program running though), I remove power to the Z stepper so it will turn freely, using a 1/8" acurate drill bit (or whatever you programmed the G00 above the material distance to be) I place it under the bit, so it just touches, actually you may hear a squeaking sound. Now you know the distance from you material to the bit, this is so acurate, I can cut right to the table! This also a good way if you have to change bits within a program. Just write code telling you machine to move in a good locate, stop the spindle, and pause, change bits, recalabrate and hit the go button.........don't forget to return the power to the stepper!

leswatts@... wrote:I am not familiar with desknc but I just use one of
those round spark plug gap gages for non-critical work.
It is just a flat disk with a spiral ramp around the edge
and a circular scale in thousandths. I just get the tool
close then put the gage in the gap, rotate it around,
and MDI G92Zxxx where xxx is the gap reading.

Les

>
> From: PDJ

> Date: 2003/06/25 Wed AM 08:55:32 CDT
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] zeroing z
>
> To zero the z I would like to add a switch made from the tool bit and an
> alligator clip and a piece of metal with a wire attached. The idea is to
> be able to jog the z until the bit meets the metal sitting on top of the
> work material.

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