Patents Assigned to Yamazaky Iron Works
  • Patent number: 4250785
    Abstract: A turret type punch press which has a plurality of strikers is disclosed. The punch press comprises a turret mechanism, a plurality of large-diametrical punches radially spaced along a main circular track of the turret mechanism, a plurality of small-diametrical punches spaced along a plurality of subtracks centering around points on the main circular track between every two adjacent large-diametrical punches, a main striker provided in the lower end of a ram to correspond with the large-diametrical punches and a plurality of substrikers provided circumferentially along the main striker to correspond with the small-diametrical punches. The main striker and the substrikers are selectively operated according to selection of the punches.
    Type: Grant
    Filed: September 7, 1979
    Date of Patent: February 17, 1981
    Assignee: Yamazaky Iron Works
    Inventors: Akio Morishita, Masayoshi Mizukado, Naoe Fukumura