Automatic measurement method for backlash of bevel gear pair of steering gear

Abstract

The invention, which belongs to the technical field of automatic measurement, provides an automatic measuring method for a gap of a steering engine bevel gear pair. With the method, a problem that the measurement precision and measurement efficiency are low because the gap of the existing steering engine bevel gear pair is measured and adjusted manually can be solved. A measurement tool employed by the method is characterized in that a grating scale sensor and a pressure sensor are arranged on a one-dimensional electric bench; the grating scale sensor is used for measuring a moving distance of the one-dimensional electric bench; and the pressure sensor is used for measuring a pressure between the one-dimensional electric bench and a rack wheel. A current sensor is used for monitoring a current value of a motor; and an upper computer is used for reading current, pressure and displacement signals collected at field by a PLC. In addition, the method comprises: step one, obtaining a mechanical null reading number HA of a bevel gear pair gap; step two, obtaining a measurement stop position reading number HB of the bevel gear pair gap; and step three, obtaining an optimized gap D of the bevel gear pair, wherein the D meets a formula: D=HB-HA. Therefore, when the system work is guaranteed, the bevel gear pair is located at an optimized working gap.

Description

technical field [0001] The invention belongs to the technical field of automatic measurement. Background technique [0002] The size of the gap between the bevel gear pair of the steering gear affects the transmission sensitivity of the electromechanical servo mechanism, and the difference in the transmission gap will cause system jitter problems. Due to the processing differences of machined products, the assembly gap of the electromechanical servo mechanism needs to be adjusted by adjusting the gasket, so that the assembly gap of the electromechanical servo mechanism has a similar transmission gap, so as to ensure the consistency of the assembly of the electromechanical servo mechanism. The assembly clearance of the electromechanical servo mechanism includes three aspects: the assembly clearance between the bevel gear pairs, the transmission clearance of the harmonic gear and the rigid wheel, and the total transmission clearance of the electromechanical servo mechanism. ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the gap of the bevel gear pair of the steering gear is measured and adjusted manually, and its measurement accuracy and measurement efficiency are low, and an automatic measurement method for the gap of the bevel gear pair of the steering gear is provided.

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