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Laser processing apparatus and laser processing method

A technology of laser processing and laser light source, applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as difficult control of excitation time

Active Publication Date: 2014-09-24
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the pulse width is short, such as tens of μs, it is difficult to control the excitation time in consideration of energy detection sensitivity and calculation time

Method used

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  • Laser processing apparatus and laser processing method
  • Laser processing apparatus and laser processing method
  • Laser processing apparatus and laser processing method

Examples

Experimental program
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Effect test

Embodiment Construction

[0031] figure 1 A schematic diagram of a laser processing apparatus based on Example 1 is shown in . The laser light source 1 starts laser oscillation in synchronization with a laser oscillation start trigger signal received from the control device 20 , and stops laser oscillation in synchronization with a laser oscillation stop trigger signal. When laser oscillation starts, the laser light source 1 emits laser pulses.

[0032] The laser light source 1 includes a laser oscillator 10 and a drive circuit 11 . As the laser oscillator 10, for example, a gas laser oscillator such as a carbon dioxide laser oscillator is used. A laser oscillation start trigger signal and a laser oscillation stop trigger signal are applied from the control device 20 to the drive circuit 11 . When the drive circuit 11 receives the laser oscillation start trigger signal, it starts supplying electric power to the laser oscillator 10 . When the laser oscillation stop trigger signal is received, the po...

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Abstract

The invention provides a laser processing apparatus and a laser processing method. The laser processing apparatus can enable the pulse energy of each pulse to be stable even in a wide pulse width. A laser light source and laser oscillation starting trigger signals received from the external synchronously start laser oscillation, and the laser light source and laser oscillation stopping trigger signals synchronously stop the laser oscillation. A detector detects the electric power dependent on being applied to the laser light source and at least one of the physical quantities of the laser pulse ejected from the laser light source. A control device applies the laser oscillation starting trigger signals to the laser light source and applies the oscillation stopping trigger signals to the laser light source according to the detection result of the physical quantities detected by the detector.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2013-056217 filed on March 19, 2013, and Japanese Patent Application No. 2013-067746 filed on March 28, 2013. The entire contents of this Japanese application are incorporated herein by reference. technical field [0002] The present invention relates to a laser processing device and a laser processing method that emit pulsed laser light to perform laser processing. Background technique [0003] In gas lasers such as carbon dioxide lasers, impurities etc. in the laser medium gas affect the discharge. Therefore, the pulse energy of each emitted laser pulse varies. When laser pulses are used for drilling, if the pulse energy deviates, the processing quality will be inconsistent. [0004] Patent Document 1 below discloses a laser oscillation method that reduces variations in pulse energy. In the method disclosed in Patent Document 1, the energy value of the laser light emitted from the laser osc...

Claims

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Application Information

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IPC IPC(8): B23K26/0622
CPCB23K26/0622B23K26/0643B23K26/0648B23K26/066B23K26/382B23K26/03B23K26/14B23K26/50B23K26/702
Inventor 万雅史冈田康弘
Owner SUMITOMO HEAVY IND LTD