Measuring method for semi-axis included angle

Abstract

The invention provides a measuring method for a semi-axis included angle, and belongs to the technical field of automobile transmission systems. The method comprises the steps of obtaining left semi-axis coordinate data, and fitting a first cylinder according to the left semi-axis coordinate data; obtaining right semi-axis coordinate data, and fitting a second cylinder according to the right semi-axis coordinate data; obtaining installation surface coordinate data, and fitting a first plane according to the installation surface coordinate data, wherein the installation surface is the installation surface of a motor and a speed reducer; measuring the left semi-axis included angle, wherein the left semi-axis included angle is an included angle formed between the axis of the first cylinder and the normal of the first plane; measuring the right semi-axis included angle, wherein the right semi-axis included angle is an included angle formed between the axis of the second cylinder and the normal of the first plane. A finished automobile measuring object is converted and fitted into virtual surfaces and lines, the spatial relation of the surfaces and lines is more clear, the included angle formed between the lines can be directly measured, the left semi-axis included angle and the right semi-axis included angle are obtained, and measured data is more accurate.

Description

technical field [0001] The invention relates to the technical field of automobile transmission systems, in particular to a method for measuring the included angle of half shafts. Background technique [0002] Cars are the most commonly used means of transportation in daily life. With the improvement of people's quality of life, the requirements for the safety and comfort of cars are getting higher and higher. [0003] Such as Figure 5 As shown, in the vehicle transmission system, the half shaft 16 plays the role of transmitting the power output by the power assembly 18 to the wheels 15, so as to realize the driving of the vehicle. Since the powertrain 18 needs to consider many factors when it is arranged, the output axis of the differential (arranged at the end of the powertrain 18) cannot be coaxial with the axis of the wheel 15, which will make the axle shaft 16 and the differential There is a space angle between the output axes, which is referred to as the semi-axis ang...

AI Technical Summary

Problems solved by technology

[0005] However, due to the low measurement accuracy of the digital display level 17 in this method, the measured data of the half-axis included angle a is inaccurate, which affects the subsequent precise adjustment of the vehicle.

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