Laser reflective coaxial measuring instrument

Abstract

The invention relates to a machine part form and location tolerance measuring device, in particular to a laser reflection type coaxial measuring instrument. The laser reflection type coaxial measuring instrument is composed of an adjusting rod, a steel ball seat, steel balls, a roller, a motor frame, a motor, a motor seat, an adjusting plate, a mirror frame seat, arm locks, a laser pen, a spring piece, a bolt, a fixing frame, a plane mirror, a mirror frame, a fastening screw, a sliding groove, an adjusting handle, a shaft bracket, an incidence hole and a projection target. The U-shaped spring piece is connected with the top of the fixing frame into a whole through the bolt. The upper end and the lower end of the spring piece are respectively provided with an arm lock which is connected with the spring piece into a whole. Each steel ball is installed at the right end of each arm lock. The steel balls can rotate freely. A vertical thread through hole is formed in the left end of each arm lock. Threaded rods of the adjusting plate are matched with the thread through holes. Compared with the prior art, the machine part form and location tolerance measuring device is higher in measuring accuracy and measuring efficiency.

Description

Technical field [0001] The invention relates to a measuring device for the shape and position tolerance of mechanical parts, in particular to a laser reflection type coaxial measuring instrument. Background technique [0002] The "External Triangular Coaxial Measuring Instrument" with the patent number 200910060010.3 uses the combination of three limit plates and a dial indicator to measure the coaxiality of large pipe fittings. This device has the following defects: [0003] 1. This scheme does not have a reliable mechanical means to make the three limit plates close to the surface of the pipe and rotate, and can only be operated manually. For such an operation, the direction of force and the magnitude of the force are unstable, so It will undoubtedly reduce the accuracy of the measurement. [0004] 2. The reading of this solution depends on the measuring rod and the dial indicator, and the existing dial indicator is usually made of a gauge type universal length measuring tool usin...

AI Technical Summary

Problems solved by technology

During the multiple transmissions of the gear, the slight gap between the meshing teeth of the gear will cause the delay of the measurement result. This delay will ignore some small fluctuations in the measurement value, thereby reducing the accuracy of the coaxiality measurement. At the same time , in order to overcome the measurement error caused by this delay, the measurement is only performed at a slower speed, which undoubtedly reduces the efficiency of the measurement

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