Concave-convex meshing pure rolling spiral bevel gear mechanism for cross shaft transmission

A cross-axis, pure rolling technology, which is applied in the direction of transmission, gear transmission, belt/chain/gear, etc., can solve the plastic deformation of the tooth surface, cannot realize the movement and power transmission of two orthogonal axes in the plane, and cannot be used Conventional power and high-speed heavy-duty transmission and other issues

Active Publication Date: 2018-09-14
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
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  • Concave-convex meshing pure rolling spiral bevel gear mechanism for cross shaft transmission
  • Concave-convex meshing pure rolling spiral bevel gear mechanism for cross shaft transmission
  • Concave-convex meshing pure rolling spiral bevel gear mechanism for cross shaft transmission

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Embodiment 1

[0116] The present invention provides a concave-convex meshing pure rolling bevel gear mechanism for cross shaft transmission, which is applied to the transmission with a transmission ratio of 1 between two cross shafts in a plane, and its structure is as follows figure 1 As shown, it includes a small wheel 1 and a large wheel 8, 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 15, and the large wheel 8 is connected to the The wheel center hole 16 is connected to the output shaft 6, that is, the large wheel 8 is connected with the driven load through the output shaft 6; the axes of the small wheel 1 and the large wheel 8 intersect, and the small wheel 1 and the large wheel 8 The included angle between the angular velocity vectors is θ, and θ=2π / 3 radians (rad) in this example. figure 2 It is a schematic diagram of the spatial meshing coordinate system of the conca...

Embodiment 2

[0215] The concave-convex meshing pure rolling bevel gear mechanism for cross shaft transmission of the present invention is applied to the speed-up transmission between two vertical cross shafts, at this time θ=π / 2 radians (rad). like Figure 10 As shown, the large wheel 8 is used to connect the input shaft 3 through the center hole 16 of the large wheel, and the small wheel 1 is connected to the output shaft 6 through the center hole 15 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 The axes of the bull wheel 8 are perpendicular to each other, and their angular velocity angle at this moment is θ=π / 2 radians (rad). In this embodiment, there are eight spiral arc teeth 7 on the bull wheel 8, and four spiral arc grooves 2 on the small wheel 1. When the input shaft 3 drives the bull wheel 8 to rotate, the design coincidence degree ε=2. Because when the big wheel 8 and the small wheel 1 are installed, t...

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Abstract

The invention discloses a concave-convex meshing pure rolling bevel gear mechanism for cross shaft transmission and a design method thereof. The concave-convex meshing pure rolling bevel gear mechanism for the cross shaft transmission comprises a small gear and a large gear, and the small gear and the large gear form a transmission pair. The axis of the small gear intersects with the axis of the large wheel. Concave spiral arc grooves are uniformly formed in the outer surface of a cone of the small gear, and convex 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 arc grooves are jointly determined by a pure rolling meshing line parameter equation and parameters such as contact ratio and transmission ratio, and the spiral circle-arc teeth are matched with the spiral arc grooves. The spiral circle-arc teeth mesh with the spiral arc 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 cross shafts. The concave-convex meshing pure rolling bevel gear mechanism for the cross shaft transmission and the design method thereof can be used for the design of the pure rolling bevel gear mechanism of the cross shafts, have the advantages of simple design, easy processing, high transmission efficiency, large contact ratio, high bearing capacity and the like, and can be widely applied to the fields of small, micro machines and conventional machines whichare not easy to lubricate.

Description

technical field [0001] The invention relates to the technical field of gear transmission, in particular to a concave-convex meshing pure rolling bevel gear mechanism for cross shaft transmission. 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 measure to realize the "Made in China 2025" strategy of strengthening the country. [0003] At present, the main problem facing my country's gear industry is that the design and manufacturin...

Claims

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Application Information

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IPC IPC(8): F16H1/14F16H55/17F16H55/08G06F17/50
CPCF16H1/14F16H55/08F16H55/17F16H2055/0866G06F30/17G06F30/367
Inventor 陈祯文国军曾鸣杨静
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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