Apparatus for measuring micro-deformation of connecting rod based on displacement amplification principle
A technology of displacement amplification and micro-deformation, applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems such as poor operability, low precision, and complex elastic deformation, and achieve the effects of easy integration, small size, and light weight
Inactive Publication Date: 2015-11-25
HEFEI UNIV OF TECH
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[0005] The purpose of the present invention is to provide a device for measuring the micro-deformation of the connecting rod based on the principle of displacement amplification, so as to solve the problems of complex elastic deformation compensation, low precision and poor operability in the prior art
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[0019] see figure 1 As shown, a device for measuring the micro-deformation of a connecting rod based on the principle of displacement amplification includes a photoelectric detection unit 2 installed on the top of one end of the articulated arm 1 of the parallel double-joint coordinate measuring machine, and a photoelectric detection unit 2 installed on the other end of the articulated arm 1 of the parallel double-joint coordinate measuring machine. The reflective surface 3 at the top of one end, the photoelectric detection unit 2 includes a package shell 5, the side of the package shell 5 facing and facing the reflective surface 3 is set as a shell mouth, and the shell mouth is provided with a semi-lens surface 6, a reflective mirror surface 7, a filter The combined lens 9 formed by the optical sheet 8, wherein the semi-mirror surface 6 is obliquely arranged on the wall of one side of the shell mouth and forms an angle of 45° with the reference beam, and the reflective mirror ...
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The invention discloses an apparatus for measuring micro-deformation of a connecting rod based on a displacement amplification principle. As articulated arms are deformed, a two dimension deflection angle and a displacement are formed by two end faces of each articulated arm, and the apparatus can converse measurement of the two dimension deflection angle and the displacement into measurement of the coordinates of a reference light beam in a photosensitive surface. As a measurement optical path can amplify the displacement and the angle so that the sensitivity and the resolution for measurement are improved and higher measurement accuracy can be guaranteed. The apparatus for measuring micro-deformation of a connecting rod based on a displacement amplification principle has the advantages of being small in volume, being light in weight and being easily integrated, and can be arranged on a machine for realizing on-line measurement. The measurement result of the apparatus can compensate the measurement result of a parallel dual-joint coordinate measuring machine on the angle aspect and the displacement aspect so that the measurement accuracy for the parallel dual-joint coordinate measuring machine can be further improved.
Description
technical field [0001] The invention relates to the field of error compensation of a parallel double-joint coordinate measuring machine (PDCMM), in particular to a device for measuring the micro-deformation of a connecting rod based on the principle of displacement amplification. Background technique [0002] Parallel double-joint coordinate measuring machine is a coordinate measuring device based on a non-orthogonal coordinate system. Its vertical direction, namely the Z-axis system, consists of motors, double parallel guide rails, lead screws, gratings and other components. Its XY plane movable mechanism includes three articulated arms, two rotary joints and a probe system, and the probe system includes force sensors, handpieces, probes and other parts. When the system is working, the Z-axis measurement is realized through the translational degree of freedom of the vertical guide rail system and the grating system, and the XY plane is realized through the rotational degree...
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IPC IPC(8): G01B11/16
Inventor 于连栋鲁思颖刘宁宁赵会宁邓华夏李维诗夏豪杰张炜韩丽玲
Owner HEFEI UNIV OF TECH