Planetary gear with multiple sections of micro conical cylindrical face inner holes and design method thereof

Abstract

The invention discloses a planetary gear with multiple sections of micro conical cylindrical face inner holes. The gear inner hole comprises the multiple sections of micro conical cylindrical face inner holes; the gear inner hole is gradually increased in inner diameter from the end close to a planet carrier to the other end away from the planet carrier; and the larger head of the previous sectionof micro conical cylindrical face inner hole and the smaller head of the next section of micro conical cylindrical face inner hole are connected and consistent in inner diameter. The invention further comprises a design method of the planetary gear with multiple sections of micro conical cylindrical face inner holes. The planetary gear with multiple sections of micro conical cylindrical face inner holes and the design method thereof have the benefits as follows: after the planetary gear is loaded and the cantilever planet wheel shaft produces an elastic deformation, both the contact area andthe pressure distribution between the inner hole face and multiple rows of roller pins are uniform, the influence of unbalanced pressure loading between the inner hole face and the roller pins is avoided, the stable operation of the planetary gear is ensured, the adverse friction between the gear inner hole and the roller pins during the rotating process is reduced, the local heating defect is reduced, and the surface contact fatigue lives of the roller pins and the inner hole face are prolonged.

Description

technical field [0001] The invention relates to the technical field of gear transmission, in particular to a planetary gear with multi-stage micro-tapered cylindrical inner holes and a design method thereof. Background technique [0002] Planetary gear transmission is widely used in various machinery and plays an increasingly important role. It has the characteristics of relatively light weight, small size, large transmission ratio range, large output torque, high manufacturing precision, high load capacity, high efficiency, stable operation, low noise, safe performance, strong adaptability, etc., and has power splitting, multi-tooth Meshing unique characteristics, widely used in metallurgy, mining, lifting, construction machinery, electric power, energy, petrochemical, construction machinery, light industry, transportation, weapons and aerospace and other industrial sectors. Among them, the planetary reducer is widely used in servo, stepping, DC and other transmission syst...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a planetary gear with a multi-stage micro-tapered cylindrical inner hole and its design method, so as to solve the problem of pressure eccentric load between the inner hole surface and the needle roller, to keep the planetary gear running smoothly, and to Reduce the bad friction between the gear inner hole and the needle roller during the rotation process, reduce the disadvantages of local heating, and increase the surface contact fatigue life of the needle roller and the inner hole surface

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