METHOD AND DEVICE FOR MANUFACTURING A CUTTING INSERT BLANK Russian patent published in 2018 - IPC B22F3/03 B22F5/10 B30B11/02 B30B15/02 

FIELD: technological processes.

SUBSTANCE: group of inventions relates to the manufacture of a cutting insert blank by compressing a powder. Providing a mold tool having an upper and lower die portion connected to the formation of a working cavity, an upper and lower punch. Upper die portion forms a channel for the upper punch slides in it, and the lower die portion forms a channel for the lower punch slides in it. Lower punch is placed in the specified position in the punch channel of the lower die portion, an open cavity formed by the lower die portion is filled with the powder. Opening of the upper die portion is connected and communicated with the corresponding opening of the lower die portion. Punches are compressed with powders, said upper punch is fed through the punch channel of the upper die portion and a predetermined distance L through said opening of the lower die portion and into the lower die portion, forming a gap g between the inner peripheral surface of the lower die portion and said punch edge of 0<g≤30 mcm.

EFFECT: porosity or deformation of the blank in the region of its upper edge is reduced.

13 cl, 8 dwg