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AssigneeNGK Insulators, Ltd.
InventorsHiroyuki Tsuji, Kazumasa Kitamura, Motoo Noritake, Satoshi Matsubayashi, Shusaku Kabe
Estimating the term…
A stamping punch of a punching apparatus for stamping comprises a grip member which is provided with crosspieces formed between long grooves on side walls of a rectangular parallelepiped, and a plurality of punch members which are formed integrally with the grip member. The respective punch members are arranged in parallel to one another. A plurality of long holes are defined on a punch holder. A large amount of adhesive is contained in the gap between joining surfaces when the grip members of the stamping punches are inserted and secured into the respective long holes. Accordingly, the positional accuracy of the punch member is improved, the accuracy of the hole defined through a workpiece is improved, and it is possible to eliminate any fear of occurrence of defect in shape. Further, the rigidity of the punch member can be improved, the stripper is prevented from application of unbalanced load, and the punch is easily exchangeable.
A punching apparatus for applying perforating machining to a workpiece by using punch members, said apparatus comprising:
A punching apparatus for applying perforating machining to a workpiece by using punch members, said apparatus comprising:
Dependencies are inferred from the claim text.