Measurement method and implementation device of non-circular gear tooth profile total deviation

Abstract

The invention belongs to the field of instrument meter and automatic detection, and discloses a measurement method and implementation device of non-circular gear tooth profile total deviation, and the invention adopts the technical proposal that the non-circular gear tooth profile total deviation is measured by adopting a polar coordinate measurement method, which comprises the following steps: calculating the PI values of a polar angle and a polar radius of each sampling point according to the polar coordinate measurement method on the basis of tooth profile curve line features and a sampling mode of the non-circular gear firstly before measurement; installing the measured non-circular gear on a precise rotary table with a circular grating, the rotary table is driven to rotate through a transmission mechanism by an alternating current servo motor, determining the actually rotated angle of the non-circular gear through the count of the circular grating, installing a spherical probe and a micrometering device on a mobile seat of a linear electric motor and controlling a measured ball to move to the position of the starting measurement point by the linear electric motor. In the measurement, the rotary table rotates continuously to control the spherical probe installed on the mobile seat of the linear electric motor to move toward the sampling point. The invention is mainly applicable to the measurement of the non-circular gear tooth profile total deviation.

Description

technical field [0001] The invention belongs to the field of instrumentation and automatic detection, and specifically relates to a method for measuring the total deviation of a non-circular gear tooth profile and an implementing device. Background technique [0002] Cylindrical gears have been widely used in production for a long time, that is, gears with circular pitch curves and fixed transmission ratios. However, the non-circular gear meets the actual demand with its unique non-uniform speed ratio transmission. Various machines and instruments, such as metal cutting machine tools, heavy machinery, light industrial machinery, automobiles and flow meters, etc., can consider using non-circular gear transmission when motion with non-uniform speed ratio is required. In recent years, both at home and abroad have attached great importance to the research on the design, processing and testing methods of non-circular gear transmission. From an overall point of view, with the co...

AI Technical Summary

Problems solved by technology

Although double-sided meshing and single-sided meshing have their own advantages, meshing measurement is not only complex in instrument structure but also requires high-precision gears or special measuring elements

The method of using templates to check tooth profile errors not only needs to manufacture many high-precision templates, but also the measurement accuracy is not easy to guarantee

As a high-precision general-purpose measuring instrument, the three-coordinate measuring machine has not been applied due to its high measurement cost and the need for special data processing software.

In addition, the tooth profile equation of non-circular gears is more complicated, and the tooth profile of each tooth is different

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