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Piercing method and laser processing apparatus

A laser processing machine and processing method technology, applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problem that the workpiece cannot function effectively, and achieve the effect of effective penetration processing

Active Publication Date: 2017-08-01
AMADA HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the conical lens forms the incident laser light on the annular beam, there is a possibility that the energy of the laser beam cannot effectively act on the workpiece during the cutting process of the workpiece.

Method used

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  • Piercing method and laser processing apparatus
  • Piercing method and laser processing apparatus
  • Piercing method and laser processing apparatus

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Embodiment Construction

[0027] Such as figure 1 Conceptually and schematically shown, a laser processing machine (laser processing system) 1 according to an embodiment of the present invention includes a laser oscillator 3 and a processing machine main body 5 . The above-mentioned laser oscillator 3 is a laser oscillator such as a fiber laser oscillator that emits laser light having a wavelength in the 1 μm band. In addition, the above-mentioned laser oscillator 3 may use the semiconductor laser beam having the seed light having a wavelength of less than 1 μm as direct diode laser light. The processing machine main body 5 includes a laser processing cutting head 9 relatively movable and positioned in the X, Y, and Z axis directions with respect to a thick plate-shaped workpiece W such as a mild steel plate placed on the table 7 . A condensing lens (not shown) is arranged on the laser processing cutting head 9 . In addition, since the above-mentioned laser oscillator 3 and the processing machine mai...

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Abstract

Provided are a piercing method and a laser processing apparatus (1) that can perform a piercing process on a thick plate within a short period of time. In a processing method for performing a piercing process on a metallic material (W) by using laser light with a wavelength in the 1 micrometer band, when the focal beam diameter of the laser light is defined as d and the Rayleigh length is defined as Zr, the piercing process is performed while 8 <= Zr / d <= 12 is maintained. The focal position of the laser light is set to the surface of a workpiece (W) or the outside of the workpiece (W). With regard to the beam profile of the laser light, single-mode laser light is transformed into a bowler-hat shape by a beam-quality tunable device (13).

Description

technical field [0001] The present invention relates to a piercing processing method and a laser processing machine for performing piercing processing when laser cutting processing of a sheet metal material is performed by a laser with a wavelength of 1 μm such as a solid-state laser or an optical fiber laser. A penetration processing method and a laser processing machine for performing penetration processing of a thick plate of a mild steel plate. Background technique [0002] When performing laser cutting processing of a plate-shaped workpiece such as a mild steel plate, the workpiece is penetrated, and the laser cutting process of the workpiece is started from the penetration processing position. Since the above-mentioned penetration processing is performed almost instantaneously (several 100 m sec) when the workpiece is a thin plate, there is almost no problem even in the laser cutting process in which the penetration processing is repeated many times. However, if the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/064B23K26/00B23K26/382
CPCB23K26/0648B23K26/382B23K26/0665B23K26/064
Inventor 李若涛石黑宏明
Owner AMADA HLDG CO LTD
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