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Plane-convex meshing pure rolling gear mechanism with parallel shaft external meshing transmission

A gear mechanism and external meshing technology, which is applied in transmissions, gear transmissions, belts/chains/gears, etc., can solve the problem of inability to use conventional power and high-speed heavy-duty transmission, unfavorable for uniform load distribution, and excessive local stress, etc. question

Inactive Publication Date: 2019-12-17
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Plane-convex meshing pure rolling gear mechanism with parallel shaft external meshing transmission
  • Plane-convex meshing pure rolling gear mechanism with parallel shaft external meshing transmission
  • Plane-convex meshing pure rolling gear mechanism with parallel shaft external meshing transmission

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Embodiment 1

[0094] The invention provides a flat-convex meshing pure rolling gear mechanism for external meshing transmission of parallel shafts, which is applied to a transmission with a transmission ratio of 4 between parallel shafts, and their coincidence degree is designed to be ε=2. Its structure is as figure 1 As shown, it includes a small wheel 1 and a large wheel 8, and the small wheel 1 and the large wheel 8 form a pair of transmission pairs. The small wheel 1 is connected to the input shaft 3 through the small wheel center hole 13, and there is a small wheel on the small wheel center hole 13. Wheel center hole 14, the bull wheel 8 is connected to the output shaft 6 through the bull wheel center hole 11, and the bull wheel center hole chamfer 12 is arranged on the bull wheel center hole 11, that is, the bull wheel 8 is connected to the driven load through the output shaft 6 Link; The axes of the small wheel 1 and the bull wheel 8 are parallel to each other. figure 2 It is a sch...

Embodiment 2

[0177] The flat-convex meshing pure rolling gear mechanism of the parallel shaft external meshing transmission of the present invention is applied to the speed-up transmission of the parallel shaft. Such as Figure 7 As shown, the big wheel 8 is used to connect the input shaft 3 through the center hole 11 of the big wheel, and the small wheel 1 is connected to the output shaft 6 through the center hole 13 of the small wheel, that is, the small wheel 1 is connected to the driven load through the output shaft 6; the small wheel 1 Parallel with the axis of bull wheel 8. In this embodiment, there are 30 spiral trapezoidal grooves 7 on the big wheel 8, and 6 spiral arc teeth 2 on the small wheel 1, and the design coincidence degree ε=1.5. When the input shaft 3 drives the bull wheel 8 to rotate, because when the bull wheel 8 and the small wheel 1 are installed, the spiral trapezoidal groove 7 on the bull wheel 8 and a spiral arc tooth 2 on the small wheel 1 are in meshing state, a...

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Abstract

The invention discloses a flat-convex meshing pure rolling gear mechanism for parallel shaft external meshing transmission and a design method thereof, and belongs to the field of gear transmission. The flat-convex external meshing pure rolling gear mechanism comprises a small gear and a large gear, wherein the axes of the small gear and the large gear are parallel. Spiral trapezoid-shaped groovesare uniformly formed in the outer surface of a cone of the small gear, and spiral circle-arc teeth are uniformly distributed on the outer surface of a cone of the large gear. The structures of the spiral circle-arc teeth and the spiral trapezoid-shaped grooves are jointly determined by a pure rolling meshing line parameter equation and parameters such as contact ratio and transmission ratio, andthe spiral circle-arc teeth are matched with the spiral trapezoid-shaped grooves. The spiral circle-arc teeth mesh with the spiral trapezoid-shaped grooves during the installation of the small gear and the large gear, and the small gear and the large gear are driven by a drive to rotate to realize the transmission between two shafts. The design method can be used for the design of the pure rollinggear mechanism of the parallel shaft external meshing transmission, has the advantages of simple design, easy processing, high transmission efficiency, large contact ratio, high bearing capacity andthe like, and can be widely applied to the fields of small, micro machines and conventional machines which are not easy to lubricate.

Description

technical field [0001] The invention discloses a flat-convex meshing pure rolling gear mechanism for external meshing transmission of parallel shafts and a design method thereof, in particular to a pure rolling gear mechanism with no relative sliding on the tooth surface for external meshing transmission of parallel shafts and its meshing line 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 impo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/08F16H55/17F16H55/08G06F17/50
CPCF16H1/08F16H55/08F16H55/17F16H2055/0866G06F30/17G06F30/367
Inventor 陈祯李波曾鸣杨静
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)