Page 116 - Threading_Handbook

2.11 Infeed Methods -
THREAD TURNING There are several methods of entering the cutter into the workpiece. Each method defines
Entering the Cutter Into the Workpiece

the position of the cutter relative to the cutting thread profile.
The chosen method will affect chip form, chip evacuation direction, cutting edge wear,
tool life, and threading surface quality. Choosing the correct method for entering the cutter
into the workpiece depends on equipment type, workpiece material, cutter geometry, and
threading pitch.

Possible methods of entering the cutter into the workpiece include:

Radial Infeed

Flank Infeed

Modified Flank Infeed

0.5˚-5˚

Alternating Flank Infeed

116 ISCAR