Patents Assigned to Dako-Werkzeugfabriken David Kotthaus GmbH & Co. KG
  • Method of and apparatus for the fine cutting (punching) of articles
    Patent number: 4586360
    Abstract: Fine die stamping of workpieces from sheet metal is effected by clamping the workpiece between a die plate and guide plate, supporting the portion of the material to form the article by an ejector which is displaced along with the punch, and driving the supported portion of the material into a hole in the die plate having flanks tapered away from the guide plate and punch so that swaging occurs on the separated portion with or upon its separation from the balance of the workpiece material.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: May 6, 1986
    Assignee: Dako-Werkzeugfabriken David Kotthaus GmbH & Co. KG
    Inventors: Willi Jurgensmeyer, Friedrich-Wilhelm Honsberg, Kurt Halbach