Gear global error measuring apparatus and method

Abstract

The invention relates to a gear overall error measuring device and method, belonging to the technical fields of precision testing technology, instruments and mechanical transmission. The invention uses a single-tooth measuring gear as a measuring element to realize rolling point scanning measurement of all teeth of gears to be tested with different specifications. Through the sensor, the angular displacement signal generated by the single-tooth measuring gear and the gear under test during the transmission process is converted into an electrical signal, which is input into the computer after the pre-processing circuit and the data acquisition card, and the four-dimensional information of the gear under test is obtained through analysis, calculation and data processing. It can display and print the error results and error curves. The invention uses the same measuring gear to complete the measurement of the measured gears with different specifications, and realizes the flexible measurement of the overall error of the gear. The single-tooth measuring gear is easy to manufacture, low in cost, high in precision and wide in application range, which ensures the measurement accuracy and expands the measurement range.

Description

technical field [0001] The invention relates to a device and method for measuring the overall error of gears, belonging to the technical fields of precision testing technology, instruments and mechanical transmission. Background technique [0002] The overall gear error measurement method was pioneered by my country in the early 1970s. It can extract individual errors and other useful information from comprehensive measurement. Its appearance has solved a difficult problem in the field of gear measurement, that is, on one instrument Quickly obtain all error information of gears. [0003] After more than 30 years of improvement and promotion, the overall gear error measurement method has developed into a motion geometry measurement method for transmission components in my country. The basic idea is to use the measured object as a rigid functional component or a transmission component to mesh with another standard component. Motion, by measuring the meshing motion error to reve...

AI Technical Summary

Problems solved by technology

[0005] 1. Measuring workpieces of different specifications must use measuring elements of different specifications, which makes the measurement flexibility of the measuring instrument poor and the cost is high

[0006] 2. It is difficult to manufacture high-precision measuring worms, especially the processing of large-module measuring worms is more difficult

[0007] 3. When measuring the helical gear, the normal meshing tooth profile is measured, which is not consistent with the international customary end face involute tooth profile, which affects its promotion and transmission accuracy

[0008] 4. It is difficult to measure large gears, mainly because it is difficult to drive large gears with a worm, thus limiting its measurement range

[0010] 1. When the measuring gear is made by mechanical processing and electric processing, it is difficult to process the shape due to the complexity, the processing cost is high, and it is not economical

[0011] 2. When chemical processing is used, it is simple and easy to operate, but acid-base solution is required in the production process, and the environment is ignored. Due to manual operation, once mistakes are made, it is difficult to replenish

[0012] 3. For the measured gears of different specifications, separate measuring gears must be made, which wastes a lot of manpower and material resources

This method is easy to manufacture and low in cost, but it is not suitable for the measurement of gears with small meshing backlash. The process of bonding metal sheets is manual, and the accuracy and reliability are difficult to guarantee.

In addition, for the measured gears of different specifications, separate measuring gears must be made, which wastes a lot of manpower and material resources. This situation makes this method very limited in practical applications

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