Patent ID: 11925972
Assignee: NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 1:
2. The precision forging method according to claim 1, wherein:
arranging the metal material includes arranging the metal material, which includes a fit region where at least part of the wall portion comes into plane contact with a wall surface of the die cavity and the pre-working projecting wall located at a side opposite to the fit region, in the die cavity;
arranging the first punch includes arranging the cutting blade of the first punch spaced apart from the wall surface of the die cavity by a distance smaller than a thickness of the wall portion; and
moving the first punch includes moving the first punch to cut the metal material with the cutting blade so that the fit region remains in the wall portion.