CAD CAM EDM DRO - Yahoo Group Archive

Modified G78 pecking ?

on 2002-08-12 13:48:05 UTC
Hi,

G78 calls for a drill pecking that uses a full retract on each peck.
The holes I am drilling only need to have the drill retract to let
the chips ride up the drill. The small up then down lets the chips
out of the hole quite successfully.

Is there a multi-stage peck ? one that would start, approach the
part, drill, withdraw a little, then continue drilling for the
pecking cycle, then withdraw fully ?

Something like drill 0.02", withdraw 0.01" the take another 0.02" so
that the top of the retract was only slightly above the last drilled
hole and not fully to the start ?

or is my best bet to move the Z to just above the part and peck from
there ?

My problem is drilling long holes in aluminum with tiny bits. 3/64
drill into a 1/4 inch plate. it's 6063 aluminum so it's kinda
sticky, but produces long chips.

Dave

Discussion Thread

turbulatordude 2002-08-12 13:48:05 UTC Modified G78 pecking ? IMService 2002-08-12 14:51:01 UTC Re: Modified G78 pecking ? doug98105 2002-08-12 15:49:06 UTC Re: Modified G78 pecking ? galt1x 2002-08-12 17:47:43 UTC Re: [CAD_CAM_EDM_DRO] Modified G78 pecking ? galt1x 2002-08-12 17:58:03 UTC Re: [CAD_CAM_EDM_DRO] Modified G78 pecking ? Jon Elson 2002-08-12 20:41:55 UTC Re: [CAD_CAM_EDM_DRO] Modified G78 pecking ?