Patents Assigned to Matsuura Machinery Co., Ltd.
  • Composite machining apparatus
    Patent number: 6337464
    Abstract: A composite machining apparatus which permits a plurality of machining heads to perform different machining operations on a workpiece having a gantry that is capable of moving back having multiple horizontally movable machining heads carried thereon to individually move vertically. Thus, the composite machining apparatus allows the multiple machining heads to perform different machining operations, one after another, on a workpiece placed on the table without moving the workpiece.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: January 8, 2002
    Assignee: Matsuura Machinery Co., Ltd.
    Inventors: Tsutomu Takaoka, Syuuji Iizuka
  • Apparatus for holding tools
    Patent number: 5409322
    Abstract: An improved tool holding apparatus includes a collet chuck or a steel ball chuck that clamps a pull bolt, which defines the forward end portion of a tool, by resilient force applied thereto from a coned disc spring. The tool holding apparatus further includes a temporary clamping device which is buried in a sleeve to temporarily clamp the pull bolt. A clamping force applied by the temporary clamping device is set at such a level that an arm can draw the tool from a main spindle by gripping the rear end portion of the tool.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: April 25, 1995
    Assignee: Matsuura Machinery Co., Ltd.
    Inventors: Yoshiharu Horikawa, Shinichi Yokoi, Takanori Matsushima