PCBN Inserts Interrupted Cutting Gear (Hardened Steel)

The hardness of the gear after heat treatment (quenching) is generally above HRC50, and some gears have intermittent cutting. For the gear end face and excircle, usually use tipped PCBN inserts, 

which can greatly improve production efficiency and improve machining accuracy. 

Workpiece: Transmission Shaft                                                 Material: 20 CrMo

Hardness: HRC58-65                     Insert Grade: BNT8              Insert Model: VNGA

Cutting parameter: Vc = 135m/min        ap = 0.1mm      f = 0.15mm/r

Surface Finish：Ra1.6

Compared with other CBN inserts: The tool life increase at least 45%!