Flat-convex engaged pure rolling mechanism for inside engaging transmission of parallel shafts

Abstract

The invention discloses a flat-convex engaged pure rolling mechanism for inside engaging transmission of parallel shafts and a design method of the flat-convex engaged pure rolling mechanism. The flat-convex engaged pure rolling mechanism consists of a pinion and a large gear ring of which the axes are parallel to each other; the cylindrical outer surface of the pinion is provided with helical trapezoidal grooves which are uniformly distributed; the cylindrical inner surface of the large gear ring is provided with helical circular arc teeth which are uniformly distributed; the helical circulararc teeth are matched with the helical trapezoidal grooves; the structures of the helical circular arc teeth and the helical trapezoidal grooves are determined by parameters such as an engaging lineparameter equation, the overlap ratio and the transmission ratio; in installation, the helical circular arc teeth are engaged with the helical trapezoidal grooves; and the pinion and the large gear ring are driven to rotate by a driver so as to realize transmission between the two shafts. The design method disclosed by the invention can be applied to the structural design of the pure rolling gearmechanism for the inside engaging transmission of the parallel shafts, has the advantages of being simple in design, easy in machining, high in transmission efficiency, large in overlap ratio, high inbearing capacity and the like, and is widely applied to the fields of tiny machinery, micro machinery and general machinery which are difficult to lubricate and designs of planetary gear transmission.

Description

technical field [0001] The invention discloses a flat-convex meshing pure rolling gear mechanism and a design method thereof for internal meshing transmission of parallel shafts, in particular to a pure rolling gear mechanism and meshing lines for tooth surfaces of parallel shaft internal meshing transmission without relative sliding Active design method of parametric equations. Background technique [0002] As the core basic components of machinery, gears are widely used in machine tools, automobiles, robots, wind power, coal mines, aerospace and other equipment manufacturing fields and the main battlefield of the national economy. Their performance directly determines the quality of major equipment and high-end industrial products. performance and reliability. Research on core basic components such as high-performance gears is a key factor in promoting industrial transformation and upgrading, enhancing the core competitiveness of national industries, and an important meas...

AI Technical Summary

Problems solved by technology

The limitations of the above two transmission mechanisms are that their design methods are based on the theory of space curve meshing, and the meshing tooth surface depends on the calculation and solution of the curve meshing equation. The meshing method is a concave-convex meshing form, and the meshing point is located on the edge of the concave tooth profile. Due to edge contact during transmission, excessive local stress will be generated, which will easily cause the tooth top of the concave tooth to break and cause transmission failure. It cannot be used for conventional power and high-speed heavy-duty transmission in industrial production.

In addition, the design methods of the above two mechanisms cannot achieve a strict design of the coincidence degree, which makes the value of the coincidence degree of the transmission pair uncertain, which is not conducive to the uniform distribution of loads

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