OPTOELECTRONIC DEVICE FOR TUBULAR GOODS THREAD CONTROL Russian patent published in 2008 - IPC G01B3/40 G01B11/30 

FIELD: physics; measurement.

SUBSTANCE: invention is related to instrumentation and may be used for contactless control of goods with external thread. Device contains movable carriage equipped with electric drive of travel and linear shift detector, support fixed on movable carriage, optical-mechanical unit equipped with electric drive of rotation around longitudinal axis, detector of turn angle and two optoelectronic heads, every of which is formed from optically conjugated source and receiver of light radiation that are installed on different sides from threaded section of item under control. Besides, device contains personal computer (PC), inlets of which are connected to outlets of light radiation receivers, linear shift detector and rotation angle detector, and outlets - to electric drives of shift and rotation. Optical-mechanical unit is arranged in the form of spindle, shaft of which is installed in bearings on support and is equipped with vertical shift mechanism. Spindle head is arranged in the form of two C-shaped holders of optoelectronic heads installed on faceplate on different sides from longitudinal axis of item under control and is equipped with mechanism for interbeam gap adjustment. At that mechanism for spindle shaft vertical displacement is arranged in the form of jack, and mechanism for adjustment of interbeam gap of spindle head represents adjustment shaft with sections of the right and left thread, which are installed in corresponding threaded openings of optoelectronic head holders. Spindle shaft is rigidly fixed to faceplate, and movable carriage is provided on mechanism for spindle shaft vertical displacement. Besides, holders of optoelectronic heads are equipped with guides, between which faceplate is installed, and optical-mechanical unit is equipped with n pairs of optoelectronic heads, where n is integer number and n>1.

EFFECT: expansion of controlled pipe diameters range and higher accuracy of control results.

3 cl, 8 dwg