Laser-aided-heating long-pulse-laser perforating device and method

A laser-drilling and laser-assisted technology, applied in laser welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of easy micro-cracks and low quality of long-pulse laser drilling, achieve high degree of automation, improve removal Efficiency, high processing quality effect

Active Publication Date: 2017-05-31
JIANGSU UNIV
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Problems solved by technology

[0005] In order to solve the problems of low quality and easy occurrence of microcracks in the current long pulse...

Method used

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  • Laser-aided-heating long-pulse-laser perforating device and method

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Embodiment 1

[0034] A laser-assisted heating long-pulse laser drilling device, comprising a long-pulse laser 9, a first beam expander 8, a CCD camera 15, a reflective plane mirror 7, a transmission / reflection plane mirror 6, a convex lens 10, a second beam expander 5, a continuous Laser 4, long pulse laser controller 11, continuous laser controller 3, workpiece 13, fixture 12, movable workbench 14, workbench controller 2 and computer 1;

[0035] Described CCD camera 15 is positioned at the top, and is electrically connected with computer 1, and directly below CCD camera 15 places reflective flat mirror 7, transmission / reflective flat mirror 6, convex lens 10 and workpiece 13 successively; Described workpiece 13 is fixed on the fixture 12, so The bottom of the fixture 12 is fixed on the movable workbench 14;

[0036] The long-pulse laser 9, the first beam expander 8 and the reflective flat mirror 7 are located on the same optical path in turn; one end of the long-pulse laser controller 11 i...

Embodiment 2

[0041] A drilling method using the laser-assisted heating of the long-pulse laser drilling device described in Embodiment 1. Before, during, and after processing the workpiece 13 with the long-pulse laser 9, the continuous laser 4 is used to process the workpiece 13. The area to be processed on the upper surface is heated. The long-pulse laser 9 refers to a laser with a pulse width of about 1 to 100 ms; the continuous laser 4 refers to a laser that can continuously emit laser light; the processing situation is monitored in real time by a CCD camera 15 . Specifically include the following steps:

[0042] S1, grinding and polishing the surface of the workpiece 13;

[0043] S2, fixing the workpiece 13 on the fixture 12, and the fixture 12 is fixed on the movable workbench 14;

[0044] S3. Under the monitoring of the CCD camera 15, use the workbench controller 2 to control the movable workbench 14 to adjust the position of the workpiece 13;

[0045] S4, setting the output parame...

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Abstract

The invention discloses a laser-aided-heating long-pulse-laser perforating device and method. The laser-aided-heating long-pulse-laser perforating device comprises a long-pulse laser device, a first beam expanding device, a CCD camera, a reflection plane mirror, a transmission/reflection plane mirror, a convex lens, a second beam expanding device, a continuous laser device, a long-pulse-laser controller, a continuous-laser controller, a workpiece, a clamp, a movable workbench, a workbench controller and a computer. The method using the laser-aided-heating long-pulse-laser perforating device is mainly characterized in that the continuous laser device is used to heat the to-be-processed area of the upper surface of the workpiece before the long-pulse laser device is used to process the workpiece, during the processing and after the workpiece is processed for a certain period of time, that is to say, effects of preheating and slow cooling are achieved during laser perforation. By the laser-aided-heating long-pulse-laser perforating device and method, the problem that micro-cracks easily appear on the wall of a hole perforated by a current long-pulse-laser perforating method is alleviate effectively, and high processing quality of the workpiece is achieved.

Description

technical field [0001] The invention belongs to the field of laser drilling, in particular to a laser-assisted heating long-pulse laser drilling device and a method thereof. Background technique [0002] Long-pulse laser drilling technology refers to the use of long-pulse laser beams to irradiate the surface of the workpiece. Because the energy density of the focused laser beam is extremely high, the temperature at the focal point will instantly reach thousands of degrees Celsius. It is rapidly melted and vaporized. At this time, the vaporized metal will be ejected with molten metal to form holes. [0003] Long-pulse laser drilling technology is a new type of special processing technology, which has the advantages of fast drilling speed, high economic benefits, wide range of processed materials, and no pollution. It has obvious advantages especially in laser group hole processing in the aerospace industry. [0004] However, during the long-pulse laser drilling process, the ...

Claims

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Application Information

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IPC IPC(8): B23K26/382B23K26/60B23K26/064
CPCB23K26/064B23K26/0643B23K26/0648B23K26/382B23K26/60
Inventor 任乃飞夏凯波王琪琪
Owner JIANGSU UNIV
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