| 摘要 |
PURPOSE:To measure an attitude of a work by a mutual relation of an obtained cut image by inclining mutually two slit-like lights and irradiating them to the work. CONSTITUTION:This method is constituted so that slit lights 4a, 4b from a light source are irradiated to a work 2 through projecting windows 5, 6 provided on a sensor body 1, and the slit lights 4a, 4b are inclined by a necessary angle, respectively, against the vertical surface and crossed in the lower part of the sensor. Also, a lens 7 is provided on an intermediate position of the projecting windows 5, 6 of the lower face of the sensor body 1, so that cut images 8a, 8b can be formed on an image pickup element 9. The cut image 8a, 8b obtained by the sensor measure an attitude of a work by a correlation to these two cut images 8a, 8b. That is to say, a distance DW of the sensor body 1 and the work 2, an angle phiS of the center line in the H direction of the sensor body 1 and a weld line, a shift (ld) of the center of the sensor body 1 and the center of the work, an inclination PSIS of a vertical line Z and the weld line, and an inclination alpha of the work in the right angle direction to the vertical line Z and the weld line can be measured, and a three-dimensional attitude of the work 2 measured. |
