ELECTRO-OPTIC DEVICE FOR CONTROLLING PARAMETERS OF THREAD Russian patent published in 2007 - IPC G01B3/40 G01B3/48 G01B11/30 

FIELD: inspection technology.

SUBSTANCE: device can be used for contact-free inspection of items having internal or external thread. Device has base 1 for placing items to be inspected, inspected item's fixing unit 3 provided with internal thread placed onto base 2, first coordinate table provided with longitudinal shift drive and longitudinal shift detector, first electro-optic head 17 placed onto first coordinate table and made of narrow light beam source (for example, laser with optical system), multiple element photoreceiver (for example, linear photoreceiver) and objective. Objective is mounted for provision of triangular optical connection of multiple element photoreceiver with narrow optical light source through corresponding surface of item 3. Device also has personal computer. Inputs of PC are connected with outputs of multiple element photoreceiver and of longitudinal shift detector. Output of PC is connected with longitudinal shift drive. Fixing unit 11 of item to be controlled, provided with external thread, is made in form of two-coned rest-centralizer disposed onto first coordinate table; one of cones is made for removal. Second U-shaped coordinate table is disposed onto base 1; table is provided with drive and lateral shift detector. Second electro-optic head is mounted onto second coordinate table at both sides from item 11. Unit 3 for fixing item is made in form of removable ring-shaped clamp (sleeve) provided with drive of rotation about longitudinal axis and with angular shift detector. First coordinate table is disposed onto base 1.

EFFECT: higher universality of device; ability of inspection as internal and external thread; simplified design.

2 cl, 5 dwg