Method for determining laser irradiation state
A technology of laser irradiation and state judgment, applied in laser welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of low laser power accuracy and failure to take into account the rising power characteristics
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no. 1 Embodiment approach 〕
[0024] [Structure of laser brazing machine]
[0025] figure 1 It is a schematic diagram showing how a vehicle body 12 of an automobile is processed by a laser brazing machine 10 . The laser brazing machine 10 joins steel plates using brazing material 14 having a lower melting point than the steel plates constituting the vehicle body 12 . The laser brazing machine 10 sequentially processes the vehicle body 12 conveyed on the production line. figure 1 It shows how the roof panel 16 and the side panel 18 of the vehicle body 12 are joined by the laser brazing machine 10 .
[0026] The laser brazing machine 10 has a solder supply device 20 , a laser irradiation device 22 , and a transfer robot 24 .
[0027] The solder supply device 20 feeds out the linear solder 14 from a reel (not shown), and supplies the solder 14 from the guide part 26 to the joined part 28 of the top plate 16 and the side plate 18 .
[0028] The laser irradiation device 22 irradiates laser light to the sold...
no. 2 Embodiment approach 〕
[0066] In the laser irradiation state judging device 36 of the present embodiment, the cause of the decrease in the power of the laser beam irradiated by the laser irradiation device 22 is specifically determined based on the time-series data of the laser power of the laser irradiation device 22 obtained in the power conversion unit 42 .
[0067] [Structure of Laser Irradiation State Determination Device]
[0068] Figure 10 It is a block diagram showing the configuration of the laser irradiation state judging device 36 . A laser brazing machine 10L and a laser brazing machine 10R are installed across the production line of the transport body 12 . The laser irradiation state judgment device 36 of the present embodiment judges the laser irradiation state of the laser irradiation device 22 each of the laser brazing machines 10L and 10R has.
[0069] The laser irradiation state determination device 36 has a power stabilization time acquisition unit 38 , an energy acquisition u...
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