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Laser beam machining apparatus, focus positioning device for laser beam machining apparatus, and converged laser beam diameter measuring device

  • US 5,948,292 A
  • Filed: 01/30/1998
  • Issued: 09/07/1999
  • Est. Priority Date: 06/05/1997
  • Status: Expired due to Fees
First Claim
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1. A laser beam machining apparatus, comprising:

  • a driver base for supporting a work giving the work a tensile force and moving the work in a horizontal direction;

    a laser machining head, having an optical converging element for a laser beam, movable in a vertical direction in which the laser beam is focused on the work;

    an upper work holding member having a nozzle for irradiating the laser beam;

    a hollow telescopic contact member for connecting said laser machining head and said upper work holding member, wherein said laser machining head and said upper work holding member are movable relative to each other in the vertical direction; and

    a lower fixed base fixed at a position corresponding to a central position of said nozzle;

    wherein the work is held between said upper work holding member and said lower fixed base at a position adjacent to a laser machining position.

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