Test method for performance measurement of transmission gear selection and shifting mechanism

Abstract

The invention discloses a performance measuring and testing method for a gear selecting-and-shifting mechanism of a transmission. The performance measuring and testing method is characterized by comprising the following steps of fixing the gear selecting-and-shifting mechanism of the transmission according to a real vehicle mounting and positioning manner; driving a gear selecting arm of the gear selecting-and-shifting mechanism to rotate, and detecting a torque and a rotation angle of an input end and an axial displacement of a gear shifting finger of the gear selecting-and-shifting mechanism; driving a gear shifting arm of the gear selecting-and-shifting mechanism to rotate, detecting the torque and the rotation angle of the input end and the rotation angle of the gear shifting finger of the gear selecting-and-shifting mechanism; if the detected parameters are qualified, judging performance qualification of the gear selecting-and-shifting mechanism, and otherwise, judging performance non-qualification of the gear selecting-and-shifting mechanism. The performance measuring and testing method has advantages of facilitating detection on the parameters such as a gear selecting-and-shifting force and the displacement of the gear selecting-and-shifting mechanism, improving efficiency and accuracy in testing of the gear selecting-and-shifting mechanism in production, realizing relatively high testing precision consistency, etc.

Description

technical field [0001] The invention relates to the technical field of automobile testing, in particular to a method for detecting the performance of a gear selection mechanism assembly in a transmission, in particular, to the gear selection force and displacement of a gear selection arm of a transmission gear selection mechanism, and the shifting force of a gear selection arm. Methods for measurement and evaluation of gear force and shift displacement, shift finger stroke and rotation angle, transmission shift mechanism performance. Background technique [0002] The gear selection mechanism of the transmission is an important part of the automobile transmission. It is one of the most important parts inside the transmission. The gear selection of the gear shifter transmits the force and torque to the gear selection mechanism through the flexible shaft. With its own structural characteristics, the force and torque transmitted by the shift flexible shaft are reflected on the s...

AI Technical Summary

Problems solved by technology

As an intermediate key component for transmitting force and torque, the gear selection mechanism has a particularly prominent impact on the performance of the gear selection due to changes in its own structural parameters. Its quality directly affects the driving of the car. The installation of the mechanism on the car greatly affects the safety of the car; the structural design is unreasonable, which will reduce the shift stiffness and affect the driver's operating experience; the gap is too large to cause the shift stroke during the shift process increase; therefore, it is necessary to detect unqualified products in the production process of the gear selection mechanism, and optimize the design parameters or design structure of the transmission gear selection through the detection data

[0003] In the existing production process, due to the lack of good automatic testing equipment, it mainly relies on manual use of jigs and inspection tools for testing. Due to factors such as workers' skills, it cannot be guaranteed that defective products in the production process can be detected, and the detection is inconsistent. It will lead to uneven products, and it is impossible to tell whether the internal parts of the product are missing from the appearance, and it is impossible to obtain valid data to compare with the design standards. Qualitative and quantitative evaluation of the performance of the gear mechanism

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