Laser machining method and apparatus therefor

Details Laser machining method and apparatus therefor Laser machining method and apparatus therefor

2005-03-22

2005-03-22

Elve, M. Alexandra (Department: 1725)

Electric heating

Metal heating

By arc

C219S121850

Reexamination Certificate

active

06870130

ABSTRACT:
An apparatus and a method for laser machining with a gap or tracing control, capable of shortening time required for moving a machining head from a machining end point of one machining shape to a machining start point of next machining shape. The laser machining is performed with the gap or tracing control in which a gap amount between the machining nozzle and the workpiece is controlled to be constant. Driving of a Z-axis is started at a predetermined velocity when the machining nozzle reaches a machining end point of one machining shape. In the drive of the Z-axis, when the Z-axis is driven by a predetermined amount, driving of an X-axis and a Y-axis is started so that the machining nozzle moves to the next machining start point by rapid traverse. A direction of driving of the Z-axis is reversed at a middle point between the machining end point and the machining start point. The driving of the Z-axis may be discontinued at a retreated point. When the gap amount reaches a predetermined amount, the gap control is started. A length of the motion path from the machining end point to the machining start point is made shorter and frequency of stopping/switching operation of the gap control axis and the machining feed axes is reduced to shorten a time required for the transition to the machining start point of the next machining shape.

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Patent Abstracts of Japan of 05285680 dated Nov. 2, 1993.
Patent Abstracts of Japan of 05212573 dated Aug. 24, 1993.
Patent Abstracts of Japan of 05006211 dated Jan. 14, 1993.

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