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Laser machining method and apparatus therefor

  • US 20030183608A1
  • Filed: 03/13/2003
  • Published: 10/02/2003
  • Est. Priority Date: 03/28/2002
  • Status: Active Grant
First Claim
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1. A laser machining apparatus for machining a workpiece by irradiating a laser beam from a machining nozzle comprising:

  • a sensor for detecting a gap amount between the machining nozzle and the workpiece;

    first driving means for driving a gap control axis to be controlled such that the gap amount detected by said sensor is maintained to a predetermined value in machining;

    second driving means for driving machining feed axes to move the machining nozzle relative to the workpiece along a predetermined machining shape in machining; and

    a controller for controlling said first and second driving means, to start driving of the gap control axis so that the machining nozzle moves away from the workpiece at a machining end point of one machining shape, and to start driving of said machining feed axes so that the machining nozzle moves to a machining start point of a next machining shape in driving the gap control axis when the gap control axis is driven by a predetermined amount or for a predetermined time.

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