Design method of curved tooth non-circular gear

A non-circular gear and design method technology, which is applied to components with teeth, belts/chains/gears, calculations, etc., can solve problems such as low motion accuracy, inability to use high-speed occasions, and high error sensitivity. To achieve the effect of high bearing capacity, large coincidence degree and low sensitivity

Active Publication Date: 2018-01-12
WUHAN UNIV OF TECH
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Problems solved by technology

[0004] However, the above traditional non-circular gears have straight teeth or helical teeth, and the meshing form is line contact meshing.
Due to the processing of non-circular gears, the machine tool needs to do variable speed ratio movement, and its motion accuracy is lower than that of circular gears. However, the characteristics of line meshing make it more sensitive to errors and cannot be used in high-speed occasions.

Method used

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  • Design method of curved tooth non-circular gear
  • Design method of curved tooth non-circular gear
  • Design method of curved tooth non-circular gear

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Embodiment Construction

[0050] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0051] In a preferred embodiment of the present invention, a method for designing a curved tooth non-circular gear, the tooth profile of the curved tooth non-circular gear is designed to be arc-shaped in the tooth length direction, and its tooth profile is designed by producing a shaped gear, including The following steps:

[0052] S1. Solve the pitch surface and dedendum top surface of non-circular gears:

[0053]S101. Select an appropriate transmission ratio, and determine the pitch surface of the non-circular gear according to the transmission ratio requirements of the non-circular gear, or the...

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Abstract

The invention belongs to the technical field of non-circular gears and discloses a design method for a curved-tooth non-circular gear. The tooth profile of the curved-tooth non-circular gear is designed through a generating gear. The tooth profile equation is solved according to the curved surface of a counterpart rack, the kinematic relation of gear generation and the engagement principle. Compared with a straight gear, the curved-tooth non-circular gear designed through the method is high in contact ratio and bearing capacity. Compared with a bevel gear, the curved-tooth non-circular gear designed through the method does not generate axial force in the transmission process and has low requirements on bearings and installation. Through the arc tooth profile of the curved-tooth non-circular gear, lubricating oil is contained in the tooth surface, and therefore a quite good lubricating condition is achieved.

Description

technical field [0001] The invention relates to a non-circular gear, in particular to a design method of a curved-tooth non-circular gear. Background technique [0002] Non-circular gears are used to transmit non-uniform motion between two shafts. Compared with other non-uniform speed ratio transmission mechanisms (such as cams, connecting rods, etc.), they have the advantages of stable transmission, compact structure, and high motion precision. They are widely used in textiles, cigarettes, In papermaking and other machinery and equipment. However, because the pitch curve is non-circular, the design and manufacture are much more complicated than circular gears, and three-dimensional modeling is particularly difficult. [0003] The motion characteristic of non-circular gears is that it can realize the nonlinear relationship between the rotation angles of the active mechanism and the driven mechanism, so it has been paid more and more attention in light industry, heavy indust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/17F16H55/08G06F17/50
CPCF16H55/084F16H55/17G06F30/17
Inventor 华林陈石韩星会郑方焱
Owner WUHAN UNIV OF TECH
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