Three-dimensional harmonic wave gear with involute tooth outline

A three-maintenance, harmonic drive technology, used in gear transmissions, transmissions, components with teeth, etc., can solve the problem of reducing the amplitude of the change of the involute tooth profile of the flex wheel, and cannot be applied to various situations. not mentioned etc.

Active Publication Date: 2007-03-07
BEIJING CTKM HARMONIC DRIVE CO LTD
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Problems solved by technology

[0015] 1. The patent only mentioned that the variation coefficient of the flexspline involute tooth profile should be changed along the length direction of the teeth, but it did not mention that the tooth height of the two gears or one of them should be adjusted along the length direction of the teeth at the same time. change to avoid interference
[0016] 2. This patent only allows the variation coefficient of the flexspline involute tooth profile to change along the length direction of the tooth, and does not mention that the variation coefficient of the rigid spline involute tooth profile can also be appropriately changed along the length direction of the tooth if necessary , in order to reduce the change range of the variation coefficient of the flexspline involute tooth profile, and avoid the excessive change range of the variation coefficient of the flexspline involute tooth profile from affecting the strength of the flexspline. The variation coefficient of the open tooth prof

Method used

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  • Three-dimensional harmonic wave gear with involute tooth outline
  • Three-dimensional harmonic wave gear with involute tooth outline
  • Three-dimensional harmonic wave gear with involute tooth outline

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Embodiment Construction

[0045] The invention adopts the method of directly calculating the clearance between each pair of teeth of the flexible spline and the rigid spline to design and calculate the tooth profile of the flexible spline and the rigid spline under no-load conditions. This method is not only applicable to the case when the flexible spline and the rigid spline adopt the involute tooth profile, but also applies to the case when the flexible spline and the rigid spline adopt the non-involute tooth profile, and is applicable to any kind of cam profile Condition. The following is a brief description of this design calculation method by taking the involute tooth profile of the flexible spline and the rigid spline as an example.

[0046] Follow the following two principles in the design.

[0047] 1. The neutral layer of the flexible spline does not elongate or shorten after deformation;

[0048] 2. The shape of the tooth profile remains unchanged after the flexspline is deformed, and the sy...

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Abstract

This invention discloses one involute gear three-dimensional resonance drive device, which adopts design and process technique as flexible wheel and rigid wheel outline and is characterized by the following: at flexible wheel length taking gear vertical to flexible whell axis section; according to each section different radium deformation parameters designs the outline between flexible and rigid wheels to get the involute outline with variable parameters.

Description

technical field [0001] The invention relates to a mechanical transmission device, in particular to a harmonic transmission device using a flexible spline and a rigid spline with an involute tooth profile. Background technique [0002] The harmonic drive reducer is a new type of transmission device invented by C.W.Musser in the 1950s (see US Patent 2906143). It has a wave generator with a cam and a flexible bearing in the inner hole of the flexible spline with external teeth. The cam profile is an ellipse or other nearly elliptical curve. The profile curve of the cam can be expressed in polar coordinates, and the line connecting the two points with the largest radial direction symmetrical to the center of the cam is called the major axis of the cam. The wave generator is installed on the open end of the flexible spline (that is, the end away from the bottom of the flexible spline), and the open end is supported by the wave generator into an ellipse or other nearly elliptical ...

Claims

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Application Information

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IPC IPC(8): F16H1/24
CPCF16H55/0833
Inventor 李克美尹仪方陈仕贤
Owner BEIJING CTKM HARMONIC DRIVE CO LTD
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