A steering gear rack and pinion clearance control method

Abstract

The invention provides a redirector gear rack gap control method and belongs to the field of redirector optimization. A redirector gear rack in the redirector gear rack gap control method comprises a commonly used segment and big turning used segments arranged on the two sides of the commonly used segment. The numerical range of the maximum starting force of a redirector does not exceed 215.8 N. The numerical range of the gyroscopic moment of a redirector gear is 0.49-1.57 Nm. The gear rack gap of the commonly used segment is smaller than that of the big turning used segments. The gear torque fluctuation of the commonly used segment is within 0.49 Nm. The gear torque fluctuation of the big turning used segments is within 0.59 Nm. The redirector gear rack gap control method has the beneficial effects that the restriction of a traditional manufacturing process is gotten rid of, and the problem that the gear rack gap can not be too small is solved; the small gear rack gap is favorable for improving the steering system rigidity, the gyroscopic moment values are decreased, and the steering smoothness is better; the problem of shaking of a steering wheel is effectively solved.

Description

technical field [0001] The invention relates to a steering gear optimization method, in particular to a steering gear rack clearance control method. Background technique [0002] The steering gear is a crucial part in the steering system of a car. Its performance directly affects the steering performance and driving comfort of the vehicle, and also has an important impact on the safety of the car. Therefore, the performance of the steering gear generally has strict performance requirements. One of the important performance requirements of the steering gear is the requirement for the maximum starting force and the turning torque and torque fluctuation of the steering gear. At present, all the steering gears have the same requirements on the stroke of the rack, which will have certain defects: [0003] (1) The longer the required stroke, the greater the influence of the straightness of the rack. Therefore, the gap between the rack and pinion cannot be too small, otherwise, it...

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Problems solved by technology

[0004] (2) In the actual use of the steering gear, the frequency of use of each section of the rack is different. The middle section is often used, and the large turning sections at both ends are only used when turning with a small radius. The middle section is often used. Due to frequent use, it is easy to cause wear and tear, and the gap will increase, which will affect the driving comfort. When turning with a small radius, the vehicle speed is generally slow, and it is not sensitive to the fluctuation of the turning torque. The requirements are too high and the significance is not great.

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