DEVICE FOR MEASURING COORDINATES OF SURFACE POINTS Russian patent published in 1994 - IPC

FIELD: measuring surface parameters. SUBSTANCE: device has measuring sensors, each of them being interconnected with joint mounted in parallel with axis of supports and intended to connect adjacent measuring beams, and hollow housing with sealing designed for interconnection with measured surface. Supports are placed perpendicularly to measuring beams, which together with measuring sensors are positioned inside housing and free ends of which are pivotally connected with walls and bottom of housing. Measuring beams are made in the form of hollow sleeve 22 with its base 23 connected with one of adjacent joints, rod 24 mounted longitudinally movably and connected by one of its end faces with other joint, slide 25 pivotally connected with other end face of rod, plate 27 mounted in sleeve 22 at an acute angle to its base 23, pivotally connected with rod and engaged with slide 25, and strain gauge 29 secured on base 23 of sleeve 22 and contacting plate 27. Pressure mechanism is made in the form of vacuum line and pneumatic contact unit connected with inner space of housing, delay relay connected with vacuum line and pneumatic contact unit, and registering unit connected with delay relay and strain gauges 29. Pneumatic contact unit is made in the form of framework with guides, contact plate mounted movably and fixedly in guides and provided with tabs arranged in fan-shaped manner and interconnected by common bus, power cylinder rigidly connected with framework and communicating with vacuum line, piston mounted longitudinally movably in power cylinder and fitted with rack rigidly secured through one of its ends perpendicularly to guides, gear wheel secured on and spring-loaded relative to power cylinder and engaged with rack, and contact member secured on free end of rack and intended to contact tabs of plate. EFFECT: improved accuracy in measuring parameters of surfaces. 2 cl, 4 dwg