CUTTING REPLACEABLE MULTISIDED PLATE Russian patent published in 2009 - IPC B23B27/16 

FIELD: metallurgy.

SUBSTANCE: plate allows discrete front helical surface in the form of steps with variable front clearance angle, reducing from cutting point. For manufacturing capability enhancement of metal working and reliability growth of wrapping and destruction of shaving separate discrete helical surfaces contain holes of spherical form of diametre 0.4±0.02 mm and depth 0.2±0.02 mm, located from main cutting edge at a distance 0.75±0.02 mm and at a distance 0.20±0.02 mm from walls of steps.

EFFECT: manufacturing capability enhancement of metal working and reliability growth of wrapping and destruction of shaving.

4 dwg