DEVICE FOR CHECKING OF PARTS COAXIALITY, CENTER FINDER AND GUIDANCE MECHANISM Russian patent published in 1998 - IPC

FIELD: check and measurement technology. SUBSTANCE: device has laser radiator 4, checking 5 and operating 6 radiation receivers. Radiator 4 and receiver 5 are positioned in CENTER finders 1 and 2 of assembly being checked and fixed therein. Receiver 6 is mounted loosely in CENTER finder 3 in assembly part to checked. Legs 12 of CENTER finders 2 and 3 are fixed in checked assembly by means of magnetic catches 11, and legs 12 of CENTER finder 1 are secured loosely through guidance mechanism 10. Plane of stop clamp of guidance mechanism 10 coincides with magnet pole. Magnetic field is closed through one pole of magnet, stop, armature, leg 12, checked assembly, and second pole of magnet and it presses leg 12 to armature and assembly tightly. Legs 12 are shifted by moving the armature. CENTER finder 1 changes position of casing in space. Ray gets into receiver 5 without changing the position of radiator 4 in CENTER finder 1. Loose attachment of receiver 6 provides for ray getting into the latter. Ray has circular structure. Coaxiality is judged by value of deviation of ray spatial position in receiver 6 from main axis. CENTER finder 1 (2, 3) has casing in which cylinder is mounted in bearings. Guides carrying legs 12 are fixed in radial holes of cylinder. Legs 12 are coupled to cylinder through flat tie-rods. Movement of at least one leg 12 causes similar movement of two remaining legs. EFFECT: higher accuracy and truth of checking, simplified construction. 2 cl, 4 dwg