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Three-degree-of-freedom involute ball gear pair

A ball gear and involute technology, applied in the field of three-degree-of-freedom involute ball gear pairs, can solve the effect of backlash and stability, cannot guarantee the continuity of ball gear transmission, and has not proposed a spherical gear tooth surface modeling method. face equations etc.

Active Publication Date: 2022-02-18
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems of the ball gear transmission pair proposed in this patent are as follows: firstly, no specific modeling method and specific tooth surface equation of the ball gear tooth surface are proposed; Continuity; moreover, the tooth profile formed on the weft line is not involute, which has a great influence on the clearance and stability of meshing transmission

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  • Three-degree-of-freedom involute ball gear pair
  • Three-degree-of-freedom involute ball gear pair
  • Three-degree-of-freedom involute ball gear pair

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specific Embodiment approach 1

[0029] Specific implementation mode 1. Combination Figure 1 to Figure 5 Describe this embodiment. The purpose of this embodiment is to provide a new three-degree-of-freedom involute spherical gear pair with stable mesh transmission, no transmission error, and high degree of coincidence, which can realize the three functions of yaw, pitch, and rotation. degrees of freedom. And it solves the problem of discontinuous meshing transmission of ball gears existing in the prior art.

[0030] Such as Figure 1~3 As shown, this embodiment provides a three-degree-of-freedom involute spherical gear pair, which includes a concave spherical gear 4 and a convex spherical gear 1, and the concave spherical gear on the concave spherical gear 4 is an independent The tooth 6 is composed of a planar involute annular tooth surface and a spherical involute arc tooth surface, and the concave gear tooth groove 5 is formed by interlacing the individual teeth 6 of the concave spherical gear.

[0031...

specific Embodiment approach 2

[0047] Specific Embodiment 2. This embodiment is a specific embodiment of a three-degree-of-freedom involute spherical gear pair described in Specific Embodiment 1: the following takes a ball gear with specific data as an example and discusses it in detail.

[0048] The parameters of the ring gear of the ball gear pair are: modulus m=2, number of teeth Z 1 =25, graduation circle pressure angle α=20°. At this time, the ring tooth pitch circle diameter d 1=50, base circle diameter d b =47, addendum circle diameter d a =54, the pressure angle of addendum circle is α a = 29.5°. At this time, the parameters of each point on the annular tooth surface can be calculated through the tooth surface equation, and the above formula for calculating the coincidence degree can be used to obtain ε 1 = 1.6.

[0049] The parameters of the arc-shaped teeth of the spherical gear pair are: number of teeth Z 2 =12, graduated circle pressure angle α s =20°, pitch circle diameter d 2 =50, the...

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Abstract

The invention discloses a three-degree-of-freedom involute ball gear pair, and relates to the field of mechanical transmission. The invention provides a novel involute continuous spherical gear pair, which solves the problems existing in the conventional spherical gear transmission. The spherical gear pair is stable in meshing transmission, free of transmission errors and high in contact ratio. The gear pair comprises a concave spherical gear body and a convex spherical gear body, teeth on the concave spherical gear body and teeth on the convex spherical gear body are each formed by combining a plane involute annular tooth face and a spherical involute arc tooth face, and plane involutes are generated on different latitude lines of a spherical gear base ball. The spherical involutes are generated on different longitude lines of the spherical gear base ball; the tooth grooves are formed by staggered distribution of teeth; and three degrees of freedom are achieved, different space motions of deflection, pitching and autorotation can be achieved, meanwhile, the tooth surfaces are continuously distributed in a staggered mode on the longitude and the latitude, the number of tooth pairs participating in meshing at the same time during meshing is obviously increased, and the transmission efficiency and stability are improved.

Description

technical field [0001] The invention relates to the field of mechanical transmission, the field of flexible mechanical arms, and the field of bionic manipulators, in particular to a three-degree-of-freedom involute ball gear pair. Background technique [0002] At present, because the traditional gears only have one degree of freedom of movement, they can only transmit the plane motion and power between two fixed shafts, and it is difficult to meet the requirements of emerging fields spawned by the wave of science and technology. Traditional single-degree-of-freedom gears cannot Therefore, the research on multi-degree-of-freedom gears came into being. [0003] The Chinese patent publication number is: CN 103573921 A, and the patent name is "a kind of involute ball gear transmission pair". This technical solution proposes a kind of involute ball gear transmission pair. It is composed of two ball gears with fixed and tangent pitch spherical surfaces. There are involute gears d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/24F16H55/10
CPCF16H1/24F16H55/10
Inventor 王佰超王丞张澧桐张雪顾莉栋宋林森顾鹏孙晨晨赵鹏程王鑫荆事成吕智王慧冬杨文香
Owner CHANGCHUN UNIV OF SCI & TECH