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Design method of harmonic gear device

A technology of harmonic gear and design method, which is applied in hoisting devices, transmission devices, components with teeth, etc., can solve problems such as processing difficulties, and achieve the effects of convenient methods, good meshing performance, and improved stability

Active Publication Date: 2018-08-10
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, in the design of rigid gears, the middle section of the flexible gear is mostly used as the main design reference section, or the meshing with the rigid gear is ensured by geometrically adjusting the structure of the flexible gear. Although the meshing problem of different sections is also considered, the given Difficulties in actual processing

Method used

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  • Design method of harmonic gear device
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  • Design method of harmonic gear device

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Embodiment

[0034] figure 1 is a simulation motion diagram of the flexible gear in the embodiment of the present invention.

[0035] Such as figure 1 As shown, the design method of a harmonic gear device in this embodiment is used to design and obtain a harmonic gear device that contains a rigid gear and a flexible gear, and the rigid gear and the flexible gear can realize spatial meshing, including the following steps:

[0036] Step 1. In the direction perpendicular to the axis of the flexible gear, select the front, middle and rear sections of the flexible gear.

[0037] Step 2, obtain the motion trajectory of the flexible gear in the range of 0°-90° through MATLAB simulation, and obtain the discrete points of the tooth profile of each section of the rigid gear through the envelope method based on the simulated motion trajectory.

[0038] figure 2 is a schematic flow chart of the envelope method in the embodiment of the present invention.

[0039] Such as figure 2 As shown, the e...

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Abstract

The invention discloses a design method of a harmonic gear device, and designs the harmonic gear device comprising a rigid gear and a flexible gear and the rigid gear and the flexible gear capable ofrealizing space engagement. The design method comprises the following steps: (1) in a direction perpendicular to the axis of the flexible gear, front, middle and back sections of the flexible gear areselected; (2) a discrete point of a tooth profile of each section of the rigid gear is obtained through an envelope method based on a simulation motion trajectory of the flexible gear; and (3) a complete tooth profile of the rigid gear is obtained according to the obtained discrete points of the tooth profiles of the three sections of the rigid gear. The design method prevents defects in the conjugate profile design through single-section motion or adjustment of flexible gear structure in a traditional design method, and is more accordant with actual working conditions of a harmonic gear transmission device; and the designed rigid gear device is high in overlap ratio, stable in transmission and capable of effectively improving the transmission efficiency.

Description

technical field [0001] The invention relates to a design method of a harmonic gear device. Background technique [0002] The tooth shape design in harmonic gear transmission affects the stability and load capacity of the transmission, and has an important impact on the precision of precision mechanical equipment. At present, in the design of rigid gears, the middle section of the flexible gear is mostly used as the main design reference section, or the meshing with the rigid gear is ensured by geometrically adjusting the structure of the flexible gear. Although the meshing problem of different sections is also considered, the given The actual processing caused certain difficulties. [0003] In the transmission process of harmonic gear transmission, the influence of the elastic deformation of the flexspline on the conjugate motion of the teeth of the two wheels must be considered. The conjugation between the teeth belongs to the category of space tooth profile motion. There...

Claims

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Application Information

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IPC IPC(8): F16H49/00F16H55/08F16H55/17G06F17/50
CPCF16H49/001F16H55/08F16H55/0833F16H55/17G06F30/17G06F30/20
Inventor 陈光胜刘洋顾凌霄倪旭涛王鲁京
Owner UNIV OF SHANGHAI FOR SCI & TECH
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