DEVICE MEASURING COORDINATES OF POINTS OF SURFACE OF ARTICLE Russian patent published in 1995 - IPC

FIELD: measurement technology. SUBSTANCE: device has robot 1 composed of case 2 on which cantilever 3 is anchored carrying head 4 of robot 1. Hollow tail spindle 5 carrying measuring probe 6 on its end is built in head 4 of robot 1. Through base plate 7 robot 1 is coupled to two bearing columns 8 and 9 on which translation transducers 10 and 11 are hinged. Transducers are manufactured in the form of laser interferometers connected with the aid of hollow telescopic rods 18 and 19 to discs 20 and 21 mounted coaxially on head 4 of robot 1 for rotation about its vertical axis. Reflectors of interferometers capable of remaining parallel to output faces of optical dividers when robot head 4 moves are made fast to discs 20 and 21. Third interferometer optically coupled to reflector and made fast to probe 6 is anchored on cantilever 3. In process of movement of head 4 information on distances from head 4 to interferometers (in plane XY) and from interferometer 24 coordinate Z (at moment of touch of probe 6 of checked object) will from interferometers into PC 38. Device measures coordinates of points of surface by method of trilateration which ensures increased precision of measurements. EFFECT: increased precision of measurements. 5 dwg