Patents Assigned to Amada Compmany, Limited
  • Patent number: 5410927
    Abstract: The low noise punch tool (17) of this invention includes an upper surface pad (51) formed of a low noise material and disposed on an upper surface of a punch head (37) to be struck by a striker (25) of a punch press. Further, an elastic member (55) formed of a low noise material is interposed between the punch head (37) and a punch guide (43), and a ring (53) formed of a low noise material is interposed between the punch body (39, 41) and the punch guide (43). The low noise punch tool (17) includes a lower surface pad (63) formed of a low noise material and attached to a lower surface of a stripper plate (45) provided at a lower end of the punch guide (43). The low noise material may be urethane. Yet further, the cutting edge (41a) provided at the lower end of the punch body (41) has preferably a shearing angle. This punch tool is advantageous in that the noises of the punch tool during punching is significantly reduced, and the structure thereof is simple.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: May 2, 1995
    Assignees: Amada Compmany, Limited, Amada Meirecs Company, Limited
    Inventors: Hitoshi Omata, Oriya Fujita