Title:
QUALITY-INSPECTION DEVICE OF WELDING BEAD
Document Type and Number:
Japanese Patent JPH0571932
Kind Code:
A
Abstract:
PURPOSE:To enable a judgment processing time of conforming/non-conformity of an appearance shape of a welding bead to be reduced drastically. CONSTITUTION:A slit-shaped laser beam L2 which is emitted from a light- projection means 31 to a welding bead is picked up by an image pick-up means 41, only a part of the slit-shaped light with a highest luminance out of the images which are picked up is extracted for each scanning by an image preprocessing means 61, and a characteristic value of a welding bead 4 is obtained based on a signal from the image preprocessing means 61. Then, the characteristic value of the welding bead 41 is compared with a preset reference value, thus enabling conformity/non-conformity of the welding bead to be judged.
Inventors:
IWAI TAKAO
Application Number:
JP25873891A
Publication Date:
March 23, 1993
Filing Date:
September 11, 1991
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B23K9/095; B23K26/03; G01B11/24; B23K9/127; (IPC1-7): B23K9/127; B23K26/02; G01B11/24
Domestic Patent References:
| JPS61142408A | 1986-06-30 | |||
| JPH0328704A | 1991-02-06 | |||
| JPH02271209A | 1990-11-06 | |||
| JPH03195906A | 1991-08-27 |
Attorney, Agent or Firm:
Nobuo Tabuchi
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