发明名称 |
Measurement head for welding machines |
摘要 |
A measurement head in an arc welding machine modulates the light intensity of a laser light beam with a modulating signal of 50 KHz or higher, and radiates the laser light beam onto an object to be measured while changing the direction of laser beam emission in one plane. A light receiving unit in the measurement head changes its direction of detecting a reflected beam in the same plane. Angles at which the light beams are emitted and detected are detected at the time a modulated signal component is detected from an output from the light receiving unit. The position of a bright spot produced on the surface by the radiated laser light beam is computed from the detected angles based on the principle of triangulation.
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申请公布号 |
US4567347(A) |
申请公布日期 |
1986.01.28 |
申请号 |
US19840592651 |
申请日期 |
1984.03.23 |
申请人 |
NIPPON TSUSHIN GIJUTSU KK |
发明人 |
ITO, GIICHI;NAKANO, ICHIZO;SHIMIZU, YUICHI;MUKAI, KOSAKU;SUZUKI, SAIJU |
分类号 |
G01B11/00;B23K9/12;B23K9/127;G01B11/24;G01S17/46;(IPC1-7):B23K9/10 |
主分类号 |
G01B11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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