WELDING SYSTEM AND WELDING METHOD
First Claim
1. A welding system comprising:
- a welding mechanism that welds an object to be welded while moving along a welding line relative to the object to be welded;
a transmission laser light source that generates transmission laser light;
a transmission optical mechanism that transmits, during or after welding operation, the transmission laser light generated from the transmission laser light source to surface of the object to be welded for irradiation while moving, together with the welding mechanism, relative to the object to be welded so as to generate a transmission ultrasonic wave;
a reception laser light source that generates reception laser light so as to irradiate the object to be welded with the reception laser light for the purpose of detecting a reflected ultrasonic wave obtained as a result of reflection of the transmission ultrasonic wave;
a reception optical mechanism that transmits, during or after welding operation, the reception laser light generated from the reception laser light source to the surface of the object to be welded for irradiation while moving, together with the welding mechanism, relative to the object to be welded and collects laser light scattered/reflected at the surface of the object to be welded;
an interferometer that performs interference measurement of the scattered/reflected laser light; and
a data recording/analysis mechanism that measures and analyzes an ultrasonic signal obtained by the interferometer.
1 Assignment
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Accused Products
Abstract
A welding system has: a welding mechanism, a reception laser light source, a reception optical mechanism, an interferometer, a data recording/analysis mechanism and a data recording/analysis mechanism. The reception laser light source generates reception laser light so as to irradiate the object to be welded with the reception laser light for the purpose of detecting a reflected ultrasonic wave obtained as a result of reflection of a transmission ultrasonic wave. The reception optical mechanism transmits, during or after welding operation, the reception laser light generated from the reception laser light source to the surface of the object to be welded for irradiation while moving, together with the welding mechanism, relative to the object to be welded and collects laser light scattered/reflected at the surface of the object to be welded.
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Citations
23 Claims
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1. A welding system comprising:
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a welding mechanism that welds an object to be welded while moving along a welding line relative to the object to be welded; a transmission laser light source that generates transmission laser light; a transmission optical mechanism that transmits, during or after welding operation, the transmission laser light generated from the transmission laser light source to surface of the object to be welded for irradiation while moving, together with the welding mechanism, relative to the object to be welded so as to generate a transmission ultrasonic wave; a reception laser light source that generates reception laser light so as to irradiate the object to be welded with the reception laser light for the purpose of detecting a reflected ultrasonic wave obtained as a result of reflection of the transmission ultrasonic wave; a reception optical mechanism that transmits, during or after welding operation, the reception laser light generated from the reception laser light source to the surface of the object to be welded for irradiation while moving, together with the welding mechanism, relative to the object to be welded and collects laser light scattered/reflected at the surface of the object to be welded; an interferometer that performs interference measurement of the scattered/reflected laser light; and a data recording/analysis mechanism that measures and analyzes an ultrasonic signal obtained by the interferometer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A welding method that welds an object to be welded while moving a welding mechanism along a welding line relative to the object to be welded, the method comprising:
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a transmission ultrasonic wave generation step of irradiating, during or after welding operation, part of the surface of the object to be welded with transmission laser light generated from a transmission laser light source while moving a transmission optical mechanism, together with the welding mechanism, relative to the object to be welded so as to generate a transmission ultrasonic wave; a reflected ultrasonic wave detection step of irradiating, during or after welding operation, part of the surface of the object to be welded with reception laser light generated from a reception laser light source while moving a reception optical mechanism, together with the welding mechanism, relative to the object to be welded and collecting laser light scattered/reflected at the surface of the object to be welded so as to detect reflected ultrasonic wave obtained as a result of reflection of the transmission ultrasonic wave; and an interference measurement step of performing interference measurement of the scattered/reflected laser light. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification