Elastic return-difference-free 3Z planetary reducer

A planetary reducer, elastic technology, applied in the direction of transmission parts, gear transmission, belt/chain/gear, etc., can solve the problems of large return error, limit the development of robot industry, and low transmission accuracy, so as to improve life and elasticity The effect of small deformation and improved transmission accuracy

Active Publication Date: 2016-11-09
HEFEI UNIV OF TECH +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, there are shortcomings such as large return error and low transmission accuracy, and its use in some important equipment and precision instruments is limited. For example, the current robot joint reducers basically use RV reducers and harmonic reducers.
The manufacturing technology of RV reducer and harmonic reducer is monopolized by foreign countries, which limits the development of my country's robot industry

Method used

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  • Elastic return-difference-free 3Z planetary reducer
  • Elastic return-difference-free 3Z planetary reducer
  • Elastic return-difference-free 3Z planetary reducer

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] An elastic non-hysteretic 3Z planetary reducer, including: three planetary gears, a central sun gear 5, a fixed internal gear 7, a rotating internal gear 12, a planetary gear shaft 2, a planet carrier 8, and bearings; the bearings are supported on the casing The central sun gear 5 meshes with three planetary gears to make it rotate at the same time, and the three planetary gears keep internal meshing with the fixed internal gear 7 and the rotating internal gear 12 at the same time, and finally drives the internal gear 12 to rotate and output the rotational speed torque, wherein , see figure 1 , is the schematic diagram of the 3Z(Ⅱ) planetary reducer, see figure 2 and image 3 , the common planetary gear 1 should mesh with the central sun gear 5 and mesh with the fixed internal gear 7 and the rotating internal gear 12 at the same time. see Figure 4 , Figu...

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Abstract

The invention discloses an elastic return-difference-free 3Z planetary reducer. The elastic return-difference-free 3Z planetary reducer comprises a central sun wheel, planetary wheels, planetary wheel shafts, a planetary frame, a fixed inner gear, a rotating inner gear and a bearing and is characterized in that a layer of elastic material is additionally arranged at the matching position of each planetary wheel shaft and a hole, a layer of elastic material is additionally arranged at the matching position of a sun wheel shaft and a hole, one planetary wheel is adjusted to enable the central distance between the planetary wheel and the sun wheel to be smaller than theoretical value, the central sun wheel is eccentrically placed on a shell of the fixed inner gear, the corresponding central distance between each planetary wheel and the fixed inner gear is larger than theoretical value, through elastic material deformation, the central sun wheel, the corresponding planetary wheels, the fixed inner gear and the rotating inner gear are tightly engaged, and no side gaps exist.

Description

technical field [0001] The invention belongs to the technical field of gears, and in particular relates to a 3Z (II) planetary reducer. Background technique [0002] Compared with other types of planetary reducers, the existing 3Z planetary reducer has the advantages of large transmission ratio range, compact structure, high transmission efficiency, smooth movement, and small size. However, there are shortcomings such as large return error and low transmission accuracy, and its use in some important equipment and precision instruments is limited. For example, the current robot joint reducers basically use RV reducers and harmonic reducers. The manufacturing technology of RV reducer and harmonic reducer is monopolized by foreign countries, which limits the development of my country's robot industry. Therefore, it is very necessary to design a high-precision reducer with large transmission ratio range, compact structure, high transmission efficiency, stable transmission, smal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/32F16H57/023F16H57/12
CPCF16H1/2863F16H1/32F16H57/023F16H2001/2881
Inventor 黄康杨羊马加奇周长斌潘毅汪涛高峰段松林
Owner HEFEI UNIV OF TECH
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