Page 137 - Threading_Handbook

Tool Configuration
• What top rake geometry is the
Cutting Geometry
recommended for threading?

Chip control is very important during threading production in order to prevent the chips from THREAD TURNING
curling on the tool, which necessitates stopping the machine to clean the chips from the
cutting area. In addition, non-breaking chips cause poor surface quality of the workpiece
in its cutting area. In view of the above, ISCAR’s recommendation in most cases is to
select inserts with a chipformer to form the chips into shapes that will break them into
small segments or, to select inserts with a deflector whose purpose is to direct the chips
outside the cutting area. For brittle materials such as cast iron or for short depth cutting,
it is possible to use inserts with a flat top area. The tables below show the top rake insert
geometry for each threading family.

Available Top Rake Geometry for Production of Internal Threading
Family/Top Insert Area Deflector Chipformer
CUT-GRIP V
PICCOCUT V
MINICHAM V
CHAMGROOVE V
B-Type V
M-Type V
ISCAR Threading G-Type V
Laydown Line U-Type V
Multi- V
Tooth

Available Top Rake Geometry for Production of External Threading
Family/Top Insert Area Flat Deflector Chipformer
CUT-GRIP V V
PENTACUT V
SWISSCUT V
B-Type V
M-Type V
ISCAR Threading G-Type V
Laydown Line U-Type V
Multi- V
Tooth

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