A Off-line Measuring Method of Gear Tooth Profile Deviation Based on Three Coordinate Measuring Machine

Abstract

This application relates to the field of gear parameter measurement, in particular to an off-line measurement method for gear tooth profile deviation based on a three-coordinate measuring machine, including S1, preparing theoretical data; S2, establishing a measurement coordinate system S3, and moving the measuring head of the three-coordinate measuring machine along the Measure the normal vector direction of the grid point of the tooth surface to be tested close to the tooth surface to obtain the actual measurement data; S4, process and compare the actual measurement data with the theoretical data to obtain the tooth profile deviation value of the gear to be tested. This application is based on a three-coordinate measuring machine and uses general-purpose measurement software to realize the general off-line measurement of gear tooth profile deviation, and the off-line measurement method of gear tooth profile deviation in this application is universal and applicable to any gear. The traditional measurement method is more detailed in the establishment of the measurement coordinate system. Compared with the traditional data processing method, the influence of the part processing error on the measurement is considered, so the result is more accurate and reliable.

Description

【Technical field】 [0001] The present application relates to the field of gear parameter measurement, in particular to an off-line measurement method for gear tooth profile deviation based on a three-coordinate measuring machine. 【Background technique】 [0002] With the advancement of technology, the types of compound gears with tooth surfaces are becoming more and more diverse, and the structure of gears is also increasing in complexity. It is difficult to measure gears with more complex structures (such as bevel gears and face gears) with traditional measurement methods. Especially for face gears, the traditional measurement method has the following defects: a) the establishment of the measurement coordinate system is relatively simple, especially its angular positioning, which makes the measurement results inaccurate; b) the data processing has no connection with the actual measurement method, The actual measurement method will greatly affect the data processing results, a...

AI Technical Summary

Problems solved by technology

[0002] With the advancement of technology, there are more and more types of complex gears with tooth surfaces, and the complexity of gear structures is also increasing. It is difficult to measure gears with more complex structures (such as bevel gears and face gears) with traditional measurement methods.

Especially for face gears, the traditional measurement method has the following defects: a) the establishment of the measurement coordinate system is relatively simple, especially its angular positioning, which makes the measurement results inaccurate; b) the data processing has no connection with the actual measurement method, The actual measurement method will greatly affect the data processing results, and the two should have a supporting relationship; c) The data processing does not consider the influence of processing errors

[0003] The existing high-precision measurement usually uses a dedicated gear measurement center or a dedicated measurement software, but the cost of the dedicated measurement software and the dedicated gear measurement center is high, which is mainly reflected in the different methods of establishing the measurement coordinate system, measurement path planning, and data processing, resulting in It is difficult to achieve commonality among different types of gear measurement; and the more general three-coordinate general measurement method is adopted, and the existing theoretical knowledge and methods are still difficult to guarantee the measurement accuracy

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