G83peck drilling cycleexample lathe

G83peck drilling cycleFanuc

Peck drilling cycleFanuc lathe

Z = final Z depth; position of Z-axis at the bottom of the hole (i.e. thickness of the part) + the radius of the drill diameter

With drilling, the same movement happens.  The drill goes down. Chips need to be removed and/or broken; lubricant needs get inside the hole. The drill must be raised. The drill (or screw thread tool) goes up and down during holemaking operations.

Let’s talk chickens!  When chickens eat, they put their head down and raise it up.  This movement is called pecking. The chickens’ heads go up and down.

G83peck drilling cycleexample

J = Amount to reduce cutting depth of each pass; peck depth reduction. The value reduces the following pecks by this amount.

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