Design method of non-circular line gear capable of generating periodic motion
A design method, a technique of periodic motion, applied in belts/chains/gears, mechanical equipment, complex mathematical operations, etc., which can solve problems such as the inability to continuously change the speed ratio, the slip rate problem, and the speed change jumping.
Active Publication Date: 2020-01-17
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
[0004] However, the current non-circular gears still have the following defects: the change of speed ratio can only realize the change law of trapezoid, and the change of speed ratio cannot meet the law of similar sine change; the current non-circular gears also have slip rate problems during the transmission process , leading to a reduction in transmission efficiency; at the same time, there are jumps in the speed change during the transmission process, and the speed ratio cannot be continuously changed
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[0058] The present invention will be further described below in conjunction with drawings and embodiments.
[0059] Such as figure 2 The design method of the non-circular wire gear that produces periodic motion is shown, the non-circular wire gear includes a driving wheel and a driven wheel, and the driving wheel includes a driving wheel body and a plurality of herringbone-shaped driving wire teeth, and a plurality of driving wire teeth Evenly distributed and fixed on the driving wheel body, the tooth surface of the driving wire teeth has active contact lines; the driven wheel includes a driven wheel body and a plurality of herringbone driven wire teeth, and the plurality of herringbone driven wire teeth are uniform Distributed and fixed on the driven wheel body, there is a driven contact line on the tooth surface of the driven line tooth; the active contact line and the driven contact line are meshed; the design method includes the following steps:
[0060] S1: Establish a ...
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The invention discloses a design method of a non-circular line gear capable of generating periodic motion, the non-circular line gear comprises a driving wheel and a driven wheel, the driving wheel comprises a driving wheel body and a plurality of herringbone driving line teeth, the plurality of driving line teeth are uniformly distributed and fixed on the driving wheel body, and driving contact lines are arranged on the tooth surfaces of the driving line teeth; the driven wheel comprises a driven wheel body and a plurality of herringbone driven line teeth, the herringbone driven line teeth are uniformly distributed and fixed on the driven wheel body, and a driven contact line is arranged on the tooth surface of each driven line tooth; the driving contact line is meshed with the driven contact line. According to the design method, a contact line equation is established according to the angle between the axis of the driving wheel and the axis of the driven wheel, and then a solid modelof the non-circular line gear is established based on the contact line equation and the like. According to the non-circular line gear obtained through the design method, the non-sliding output periodchange speed ratio can be achieved, sudden change of angular acceleration in the transmission process can be avoided, and therefore impact is avoided.
Description
technical field [0001] The invention relates to the technical field of gears, in particular to a design method of a non-circular wire gear that generates periodic motion. Background technique [0002] Non-circular gears can achieve precise and non-uniform transmission between two shafts. Commonly used non-circular gears include non-cylindrical gears, non-conical gears, and non-circular gears with end teeth. Non-cylindrical gears are used for transmission between parallel shafts, while non-bevel gears are used for transmission between crossed shafts. [0003] Wire gear is a new type of gear designed according to the meshing principle of space conjugate curves. During its transmission process, a pair of space conjugate curves (master and slave wire tooth contact lines) always maintain a point contact meshing state. Because the wire gear has the characteristics of small size, light weight, large transmission ratio, etc., and can realize parallel axis, arbitrary angle cross axi...
Claims
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Login to View More IPC IPC(8): G06F30/17G06F17/11F16H55/08F16H55/17
CPCG06F17/11F16H55/084F16H55/17
Inventor 陈扬枝肖小平邵琰杰
Owner SOUTH CHINA UNIV OF TECH