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Author Topic: Peck Drilling  (Read 5506 times)

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Offline Keith

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Peck Drilling
« on: June 12, 2006, 09:23:01 PM »
Hi,could someone walk me through how to code for peck drilling please.-Keith

Offline Graham Waterworth

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Re: Peck Drilling
« Reply #1 on: June 13, 2006, 04:12:13 AM »
Hi Kieth,

Peck drilling cycle works like this :-

Short retract type, just breaks the chip, drill stays down the hole.

G73 Z-1. R.1 Q.1 F3.

Z = final depth of hole
R= safe starting distance above job
Q= depth of each peck
F= feed rate

or

Full retract type, every peck the drill moves back to start position (R) and then rapids back to cutting depth.

G83 Z-1. R.1 Q.1 F3.

Z = final depth of hole
R= safe starting distance above job
Q= depth of each peck
F= feed rate

If you add a G98 to the line it forces the tool to rapid back the the safe start point.

If you add a G99 to the line it forces the tool to rapid back to the R point. You should then put a G98 on the last move 

If you have 4 holes to drill on 1" centers you would do something like :-

N1 (DRILL 1/4" * 2" DEEP)
G54 G00 G90 G43 X0 Y0 Z25. H1 S1000 M3
G73 G99 Z-2. R.1 Q.25 F2.
X-1.
X-2.
X-3. G98
G80
G91 G28 Z0
M30

Graham.
« Last Edit: June 13, 2006, 04:26:59 AM by Graham Waterworth »
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Offline Keith

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Re: Peck Drilling
« Reply #2 on: June 13, 2006, 10:22:54 AM »
Awesome,thanks Graham.Totally got it.-Keith