Air drill

[Kyle Stapleton]

Is there a way to manually zero the air drill? I have had lot of problems zero it with the coated boring bits we use.

[Kyle Stapleton]

Anyone, Anyone?

[srwtlc]

Keypad and a small fixed distance setting using a slip of paper.

Some stop collars to set all the bits at the same length and then use some kind of jig to contact at a different point on the drill that is constant and consistent with the bit length.

Make a special reed/contact type of zero plate where the bit will push the contacts together and set it according to the triggered thickness (this would need to be added to the drill offset file).

A slip on tip that has it's own wire clipped to ground and a known thickness between the tip of the drill (inside) and the contact surface (outside) and again the drill offset file would need some editing. Actually just a custom plate thickness in my_variables that is read by the drill offset file.

[Kyle Stapleton]

The keypad is what I would like to do but the only way I have done it before is using the Drill offset file and their is not way to key pad in that file.

[hh_woodworking]

http://www.talkshopbot.com/forum/showthread.php?t=9482

[Kyle Stapleton]

Setting the air offset does not work the same as Zzero.
Will call up shopbot and/or do what Scott said.
Thanks,

[srwtlc]

You could do it all manually by dropping the drill the same way you do with the offset routine (slide valve and flip switch #5 in keypad) and then use the keypad to lower it to your plate or just the surface and then calculate the offset using DrillOffset = Drill Height (%3) - Zzero Plate Thickness. That value would then have to be entered in the my_variables.sbc file after &my_ZinDrilloffset_T31=XX.

Or, you could make a custom file to prompt for the needed actions and write the offset like the other file does or modify the original file to ask if you want to do it manually and then branch off that way.

[rhfurniture]

Could try:
1. zero using with a bit in the chuck you know zeroes well.
2. put the bit high up in the chuck and return to z=0.
3. loosen the bit and allow it to drop onto the work.

I have done similar with a bit break (less step 1), and it works close enough.

R.

[Kyle Stapleton]

How can I edit the offset file to do this.

Run file
Ask for what tool, hit enter, keypad mode pops up and let's you move the z to a zero point and hit enter.
Done.