A flexible wheel cup body of harmonic reducer based on continuous transition curve

A transition curve, flexible wheel cup technology, applied in the direction of components with teeth, belt/chain/gear, winch, etc., can solve the problem of reducing the service life of the harmonic reducer, improve the weak link, improve the use Strength, the effect of reducing stress concentration

Active Publication Date: 2020-08-21
BEIJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main damage forms of the harmonic reducer are dedendum fracture, cup bottom fracture and tooth wear, and these three forms are mainly caused by the stress concentration of the flexible spline during use, which seriously reduces the service life of the harmonic reducer

Method used

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  • A flexible wheel cup body of harmonic reducer based on continuous transition curve
  • A flexible wheel cup body of harmonic reducer based on continuous transition curve
  • A flexible wheel cup body of harmonic reducer based on continuous transition curve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] Refer to attached image 3 , to establish the Cartesian coordinate system shown, which is used to represent the coordinate position of the flexspline outer contour curve N.

[0050] Refer to attached Figure 4 , the shape curve N of the outer contour structure of the cup includes the transition curve section AB between the cup bottom flange and the cup body, the straight line section BC of the cup body, the transition curve section CD between the cup body and the ring gear, the curve section DE of the ring gear, and the curve section between the ring gear and the ring gear. The structural feature of the transition curve section EF of the cup mouth is defined by the method described by the curve equation under the Cartesian coordinate system. The Cartesian coordinate system takes the central axis of the cup body as the abscissa axis and the cup bottom flange as the ordinate axis.

[0051] The transition curve section AB between the cup bottom flange and the cup body.

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PUM

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Abstract

The invention discloses a continuous transition curve based flexible wheel cup body of a harmonic reducer. A coordinate system describing way is adopted to define the outline structure shape of the flexible cup body, and a continuous transition curve equation is adopted to perform cup body structure description. The outline structure shape of the cup body comprises a cup bottom flange, a cup bodytransition curve section, a cup body linear section, a cup body, gear ring transition curve section, a gear ring curve section, a gear ring and a cup transition curve section. The outline structure shape is characterized in that the outline shape is defined by adopting a curve equation describing method under a right-angled coordinate system, and the right-angled coordinate system takes the middleaxis of the cup body as a transverse coordinate axis, and takes the cup bottom flange as a longitudinal coordinate axis. The continuous transition curve based flexible wheel cup body can improve theweak link of flexible stress concentration, improves using strength of the harmonic reducer, prolongs the fatigue service life of the flexible wheel, and has an application value.

Description

technical field [0001] The invention relates to a flexspline cup body of a harmonic reducer, in particular to a flexspline cup body described by a continuous transition curve equation. Background technique [0002] The harmonic reducer is a high-precision transmission device, and its main features are high transmission precision, small hysteresis, large transmission ratio and compact structure. It is widely used in aerospace, industrial robots, service robots and other industries. Since the movement of the harmonic reducer is mainly through the elastic deformation of the flexible spline to realize the differential gear transmission with the rigid spline, the performance of the flexspline is very important. [0003] The main structure of the current harmonic reducer is as follows: figure 1 As shown, it includes a flexible spline 1, a rigid spline 2, a flexible bearing 3, and a wave generator 4; the flexible spline 1 is in the shape of a top hat, such as figure 2 As shown,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/17F16H49/00G06F30/17
CPCF16H49/001F16H55/17F16H2049/003G06F30/17G06F30/367
Inventor 蔡力钢胡秋实刘志峰杨聪彬张涛王广
Owner BEIJING UNIV OF TECH
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