Surface flaw detecting apparatus of workpiece

Details Surface flaw detecting apparatus of workpiece Surface flaw detecting apparatus of workpiece

1995-04-20

1996-09-17

Pham, Hoa Q.

Optics: measuring and testing

Inspection of flaws or impurities

Having predetermined light transmission regions

356426, G01N 2148

Patent

active

055574025

ABSTRACT:
A surface flaw detecting apparatus of workpiece fast in flaw detecting speed, significantly shortened in the line cycle time, and simple and inexpensive in structure. By means of a control device, while a work rotating device is rotating a work about its axial line, a cleaning device remove soiling from the surface of the work, and its surface is illuminated by a lighting device, and its reflected light is detected by a line sensor camera, and presence or absence of flaw on the work surface is judged by a judging device from the result of detection. This series of measuring operation is done while the work makes a full revolution about its axial line, and hence as compared with other optical measurement, the measuring time may be shortened remarkably.

REFERENCES:
patent: 3651937 (1972-03-01), Kronseder
patent: 3832065 (1974-08-01), Sullivan et al.
patent: 3974540 (1986-08-01), Bonner
patent: 5277320 (1994-01-01), Corkill et al.

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