Straight-toothed spur gear wearing capacity computing method

Abstract

The invention relates to a straight-toothed spur gear wearing capacity computing method. The straight-toothed spur gear wearing capacity computing method includes the specific steps of firstly, determining intertooth dynamic load borne by two pairs of gear teeth meshing pairs according to time-varying meshing stiffness and geometric side clearance of a gear and computing surface pressure of meshing points; secondly, computing slip speeds of the meshing points according to a gear meshing theory; thirdly, computing wearing depths according to the surface pressure and the slip speeds of the meshing points, wherein the geometric side clearance of the gear is computed according to wearing depth computation in the step 3. The straight-toothed spur gear wearing capacity computing method takes a dynamic load updating process under a practical geometric side clearance into consideration, determines wearing capacity of every tooth position of the straight-toothed spur gear accurately and reasonably, and provides an effective approach for reducing gear vibration impact and prolonging gear service life.

Description

technical field [0001] The invention relates to a method for calculating the wear amount of spur gears. Background technique [0002] In the process of transmission of power, gears inevitably suffer from friction and wear. Although the wear is slightly harmless during the initial running-in process, as the wear continues to accumulate, the changes in the gear tooth profile shape and size parameters will This leads to the deterioration of the contact environment, resulting in a greater dynamic load between the teeth, resulting in a more serious form of gear tooth failure, which in turn increases the vibration and impact of the gear and reduces the service life of the gear. [0003] At present, the numerical calculation technology of gear wear is generally based on the Archard wear model, which involves the determination of the meshing load of the gear and the sliding distance of the tooth surface. [0004] In a gear meshing cycle, double-tooth meshing and single-tooth meshin...

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Problems solved by technology

[0005] The above two cases of determining the meshing load of the double-tooth meshing area cannot truly reflect the dynamic load between the teeth, because in the low-speed heavy-duty gear, the wear inevitably forms a gap between the teeth, causing the meshing point to deviate from the ideal gradient. Open wire position, causing vibration shock

Regardless of the influence of the amount of wear on the dynamic load between the teeth, the two pairs of meshing gear meshing pairs are directly regarded as a pair of parallel springs for load distribution, and only the time-varying stiffness of each pair of tooth meshing pairs along the meshing line is considered. Truly reflect the dynamic load between teeth

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