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Laser processing device

A technology of laser processing and laser beam, which is applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., and can solve the problem of longer processing time

Active Publication Date: 2017-11-28
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the processing time becomes longer

Method used

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  • Laser processing device
  • Laser processing device
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Embodiment Construction

[0027] figure 1 A schematic diagram of the laser processing apparatus of the embodiment is shown in . When the laser light source 10 receives the output instruction signal sig1 from the control device 20, the laser light source 10 outputs the pulsed laser beam L1. The output command signal sig1 is a pulse signal, and one laser pulse of the pulsed laser beam L1 is output for one pulse of the output command signal sig1 . As the laser light source 10, a carbon dioxide laser, a Nd:YAG laser, or the like is used, for example.

[0028] The pulsed laser beam L1 output from the laser light source 10 enters the object to be processed 30 via the switcher 11 , the folding mirror 12 , the beam deflector 13 , and the fθ lens 14 . The object to be processed 30 is held on the XY stage 15 . The switch 11 is switched between an on state and an off state according to a switching signal sig2 received from the control device 20 . When the switcher 11 is in an open state, the incident pulsed l...

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Abstract

The invention provides a laser processing apparatus which can restrain pulse energy deviation and meanwhile prolong processing time. A beam deflector allows the emission position of a pulse laser beam to move on the surface of a processing object, and sends a positioning ending signal when movement ends. When a switcher is in an open state, a pulse laser beam emits into the beam deflector from a laser light source, and does not emit into the beam deflector in a closing state. In a period of receiving a movement command signal sent by a beam deflector, and then receiving a positioning ending signal, a control device allows a switch to be in a closing state, and sends an outputting instruction signal with constant first repeating frequency. If a positioning ending signal is received, second repeating frequency from a front outputting instruction signal until a next instruction signal is selected in a frequency change scope including the first repeating frequency. A next outputting instruction signal is sent to a laser source with the second repeating frequency so as to perform processing in a high quality processing mode.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2015-044283 filed on March 6, 2015. The entire contents of this Japanese application are incorporated herein by reference. technical field [0002] The invention relates to a laser processing device. Background technique [0003] When drilling a hole with a laser, the laser beam is oscillated two-dimensionally by a galvanometer scanning mirror so that the laser beam is incident on the point to be processed. After the laser beam is incident on one point to be processed, the galvanometer scanning mirror is operated to move the incident position of the laser beam to the next point to be processed. Taking the galvanometer scanning galvanometer positioned at the next processed point as an opportunity, a pulsed laser beam is output. If the interval between the points to be processed is not constant, the time required for moving the incident position to the next point to be processed is also not cons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/382B23K26/064B23K26/0622
CPCB23K26/0643B23K26/0648
Inventor 石原裕
Owner SUMITOMO HEAVY IND LTD