G83 Peck Drilling Program

G83 Peck Drilling Program Example

G83 Peck Drilling Program, G83 is a deep hole peck drilling canned cycle.

Cycle G83 drills holes breaks up the chips as it goes. It fully retracts from the hole after each peck.

This simple part has four M12 holes drilled countersunk and tapped. The datum is the centre of the part so the holes positions are.

X55. Y55.
X-55. Y55.
X-55. Y-55.
X55. Y-55.

Here is the CNC code

The machine first moves to X-55. Y-55. and rapids the Z axis to 3mm above the part.

It then rapids the Z axis down to 1mm above the part R1.

The G83 Cycle instructs it to drill a hole 17.5mm deep (Z-17.5) at a feed of 200mm per minute (F200.)

The Q2. tells the machine to drill the hole in 2mm steps. After each step it retracts to the surface of the part.

This allows all the chips or powder to come out of the hole after each cut. It also allows the drill to cool.

As it drills the depth increases by 2mm each time.

When the hole is done it rapids back to the initial point (Z3.) This was in the line

This is because of the G98.

If it were G99 it would return to 1mm above the job (R1.)

Once the cycle is active each time it sees a position it repeats the drilling process.

When the G80 is programmed it no longer drills holes.

Now watch the video to see it all in action.

G83 Drilling Program Example

If you have been affected by any of the issues in this post or need CNC Counselling then contact me.

If you want to learn to program CNC Milling Machines