Fault detection device, laser processing system and fault detection method

A fault detection and laser technology, which is applied in the direction of measuring devices, laser welding equipment, metal processing equipment, etc., can solve the problems of peripheral device damage, processing laser output energy, etc., and achieve high reliability.

Active Publication Date: 2022-05-17
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For such an optical fiber, if the optical fiber is disconnected while the processing laser is being transmitted, the output energy of the processing laser will be large, which may cause damage to peripheral devices represented by the coating resin of the optical fiber.

Method used

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  • Fault detection device, laser processing system and fault detection method
  • Fault detection device, laser processing system and fault detection method
  • Fault detection device, laser processing system and fault detection method

Examples

Experimental program
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Effect test

Embodiment approach 1

[0031] refer to figure 1 Embodiment 1 of the fault detection device 1 according to the present disclosure will be described. figure 1 It is a block diagram showing a schematic configuration of the failure detection device 1 according to the present disclosure. Roughly speaking, the fault detection device 1 according to Embodiment 1 is as follows: figure 1 As shown, it includes a processing laser light source 10, a detection laser light source 20, a half mirror 22 (beam splitter), an optical fiber 30 (also called a process fiber or a transmission fiber), first and second photodetectors 24, 26 (light receivers) ) and the failure determination unit 50 (only referred to as the determination unit). In addition, the laser processing system according to the present disclosure includes a system control unit 60 electrically connected to the processing laser light source 10 and the failure determination unit 50 of the fault detection device 1 . The laser processing system includes a ...

Embodiment approach 2

[0042] refer to figure 2 Embodiment 2 of the fault detection device 2 according to the present disclosure will be described. figure 2 It is a block diagram showing a schematic configuration of the fault detection device 2 according to the present disclosure. Roughly speaking, the fault detection device 2 according to the second embodiment includes a second light L for detecting the second part of light L reciprocating through the optical fiber 30 instead of the second photodetector 26 . D2 The third photodetector 28 has the same configuration as that of Embodiment 1 except for this point, and therefore descriptions of overlapping points will be omitted. The third photodetector 28 is housed in the first storage chamber 16 .

[0043] Roughly speaking, the fault detection device 2 according to the second embodiment includes the processing laser light source 10, the detection laser light source 20, the half mirror 22 (beam splitter), the optical fiber 30, and the first photode...

Embodiment approach 3

[0053] refer to image 3 Embodiment 3 of the fault detection device 3 according to the present disclosure will be described. image 3 It is a block diagram showing a schematic configuration of the failure detection device 3 according to the present disclosure. Roughly speaking, the fault detection device 3 according to Embodiment 3 is equipped with the third photodetector 28 of Embodiment 2 in addition to the second photodetector 26 of Embodiment 1, and has the same characteristics as Embodiment 1 except this point. The structure is the same, so descriptions related to overlapping points are omitted.

[0054] Roughly speaking, the fault detection device 3 according to the third embodiment includes the processing laser light source 10, the detection laser light source 20, the half mirror 22 (beam splitter), the optical fiber 30, and the first photodetector 24 ( photoreceiver) and the failure judging unit 50 (judging unit). Their structures and functions are the same as those...

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Abstract

The fault detection device (1) includes: a processing laser light source (10) emitting processing laser light; a detection laser light source (20) emitting detection laser light; a beam splitter (22) for splitting the detection laser light into a first partial light and a second partial light Measuring the first photoreceiver (24) of the intensity of the 1st part light of detecting laser light; Sending the 2nd part light of detecting laser light and the optical fiber (30) of processing laser light; Measuring the 2nd part light intensity transmitted by the optical fiber 2. a photoreceiver (26); and a judging unit (50) for judging whether the optical fiber has a defect based on a relative ratio of intensities of the first part of light and the second part of light measured by the first photoreceiver and the second photoreceiver.

Description

technical field [0001] The present disclosure relates to a fault detection device, a laser processing system, and a fault detection method of an optical fiber, and relates to a fault detection device, a laser processing system, and a fault detection method of an optical fiber that transmits a particularly high-output processing laser. Background technique [0002] Widely used laser processing systems that transmit high-output processing laser light from a direct diode laser (DDL) light source, etc., to a processing head via an optical fiber, condense and irradiate the laser beam, thereby welding, fusing, and piercing the workpiece (workpiece) Wait. With such an optical fiber, if the optical fiber is disconnected while the processing laser is being transmitted, the output energy of the processing laser will be large, which may cause damage to peripheral devices such as the coating resin of the optical fiber. Therefore, in a laser processing system using a high-output process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/00B23K26/00B23K26/064
CPCB23K26/00B23K26/064G01M11/00
Inventor 石川谅山下隆之长安同庆星野贤二山口秀明加藤直也堂本真也江泉清隆
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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