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Mill-Thread Technical Section
FMT - Fast MT type
CPT has designed a unique line of solid carbide thread milling tools FMT for increased productivity and high performance. Large number of flutes enables to achieve significant shorter machining time.
FMT vs. Taps
Features
FMT
Taps
Thread up to bottom at blind hole
Possible Very low
Not possible
Machining load
High
Thread surface quality
High
Medium Medium Medium
Very reliable, especially for expensive work pieces
Process reliability Thread geometry
Very accurate
Cycle time
Same or faster than tap
Fast
Case Study
Application Internal right hand thread: M6x1.0 Thread length: 10 mm, Blind hole
Bore size: Ø 5 mm Chamfer: 0.9 mm Work piece material Steel SAE 4340 Cutter description FMT08048F10 1.0 ISO - with internal coolant Shank diameter: Ø8 mm Cutting diameter: Ø4.8 mm Number of flutes: 6 Cutting length: 10.5 mm Total length: 64 mm Cutting conditions Cutting speed: 130 m/min Feed: 0.016 mm/tooth Machine Mori Seiki NV5000 Coolant: emulsion 5% Results Tool life : 2,170 threads Cycle time: 1.5 sec
B12-14
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