A 9

B

C

D

E

F

G

A

H

apap

κr

Part

ing a

nd

gro

ovin

gThre

adin

gM

illing

Drillin

gB

oring

Tool hold

ing

Turn

ing

Machin

ability

Oth

er

info

rmation

Cutting depth and chip formation

The cutting depth (ap) is the length the

edge goes into the workpiece.

Chip formation varies with depth of cut,

lead (entering) angle, feed, material and

insert geometry.

Feed rate

The feed rate (fn) is the

distance the edge moves

along the cut per revolu-

tion.

Feed rate and the effective cutting edge length

The effective cutting edge length (la) relates to cutting

depth and lead (entering) angle.

Cutting edge length

Theory

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