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 6:
7. A precision forging system comprising:
a metal material including a wall portion, which extends in a first direction, and a pre-working projecting wall, which extends from the wall portion in a second direction intersecting the first direction;
a die including a die cavity configured to allow for arrangement of the metal material; and
a first punch configured to move in the first direction in the die cavity to forge the metal material; and
a second punch that is arranged at a side of the pre-working projecting wall opposite to the first punch and is configured to move so as to follow movement of the first punch in the first direction, wherein the first punch is opposed toward part of the wall portion thickness-wise and the pre-working projecting wall when the metal material is arranged in the die cavity, wherein the first punch includes a working end surface and a cutting blade, which is formed on an edge of the working edge surface, and wherein when the first punch is moved in the first direction within a range of a height of the wall portion, the cutting blade is configured to cut part of the wall portion thickness-wise in a moving path of the punch and cause shear deformation in the cut part.