Theoretical And Experimental Research On Single Point Laser Precise Measurement Of Involute Gear Tooth Profile Eccentricity

Involute gear is one of the most important parts in the machinery industry,and its manufacturing accuracy has a significant impact on the overall life of the equipment and product quality.Gear radial eccentricity detection is one of the necessary alternatives in gear manufacturing,gear shaft straightening,gear detection and other industries.Gear radial eccentricity has a significant impact on gear accuracy.This article focuses on the measurement method of the radial eccentricity of the involute spur gear tooth profile.The main research contents are as follows:1.Aiming at the requirement of measuring the eccentricity of the tooth profile of the involute spur gear,a method is proposed to measure the gear tooth profile with a single-point laser displacement sensor based on the principle of triangular distance measurement,and calculate the radial eccentricity of the measured gear.According to the geometric characteristics of the tooth profile of the involute spur gear,the eccentricity measurement model of the involute gear tooth profile is established and the calculation and processing algorithm is given.2.In order to make full use of the measurement accuracy of the laser displacement sensor,the measurement process of the gear tooth profile eccentricity and the measurement characteristics of the laser displacement sensor are analyzed,and a multiobjective measurement position optimization model is established a multi-objective measurement position optimization model is established,and the best measurement position and angle of the sensor are obtained.In this paper,numerical simulation of the involute gear tooth profile eccentricity measurement process is carried out.A large number of random simulation experiments verify the accuracy of the algorithm in this paper,and further analyze the errors that may exist in the algorithm in this paper,finally,some conclusions that are useful to engineering practice are obtained.3.This paper designs and builds a six-degree-of-freedom feedback control experimental measurement system,and develops a GUI operation interface based on MATLAB,which can meet the measurement of involute spur gears with different parameters.In addition,industrial cameras are used to visually measure the basic parameters of the gear to be measured,instead of manually inputting the parameters of the gear to be measured,and realize the full automation of the measurement process.4.The calibration experiment of the experimental device was designed,and the experimental device was calibrated and debugged.After the calibration was completed,a laser measurement experiment of gear tooth profile eccentricity was carried out,and the gear was measured with the dial indicator of the spherical probe under the same clamping condition,and the method was compared with the method in this paper.The accuracy of the algorithm in this paper is further verified by comparing and analyzing the results of the method in this paper and the measurement method of the spherical probe dial indicator under the same clamping conditions to measure artificially set gears with different eccentricities.Finally,the comparison and verification experiment of the factory workshop verifies the feasibility of the actual application of the algorithm in this paper.This paper proposes a method for measuring the eccentricity of the involute gear tooth profile by laser,which solves the problem of non-contact measurement of the eccentricity of the involute gear tooth profile,and realizes the online high-precision non-contact measurement of involute gear tooth profile eccentricity,which has important theoretical significance and application value in gear manufacturing,gear shaft straightening,gear detection and other industries.