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Cosine gear transmission mechanism

A technology of cosine gears and transmission mechanisms, which is applied in the direction of gear transmissions, transmissions, belts/chains/gears, etc. It can solve the problems of restricting the development of the gear industry, low contact strength of gear teeth, and small value of the main curvature radius. Small, large pressure angle, small relative sliding effect

Inactive Publication Date: 2007-10-03
HUNAN UNIV OF SCI & TECH
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Problems solved by technology

However, the relative principal radius of curvature of this gear along the normal direction of the contact line is small, the contact strength of the gear teeth is low, and the load-carrying capacity is limited to a certain extent.
The limitations of involute gears in terms of miniaturization, high speed and heavy load have increasingly restricted the development of the gear industry.

Method used

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  • Cosine gear transmission mechanism
  • Cosine gear transmission mechanism
  • Cosine gear transmission mechanism

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Embodiment Construction

[0009] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0010] Referring to Fig. 1, the cosine gear transmission mechanism includes a cosine gear 1 and a gear 2 conjugated thereto, the tooth profile curve of the cosine gear 1 is a cosine curve, and the tooth profile curve of the conjugate gear 2 is amplitude and period The conjugate curve of the cosine gear that changes with the transmission ratio, the meshing line of the two gears is approximately a straight line.

[0011] The tooth profile curve and meshing line of the cosine gear 1 and its conjugate gear 2 are determined in the following manner:

[0012] The first step is to determine the parameter equation of the tooth profile curve of cosine gear 1. Referring to Figure 2 and Figure 3, the zero line of the cosine curve is used as the pitch line of the gear, one cycle of the curve is used as a tooth pitch of the gear, and the amplitude h of the...

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Abstract

The present invention belongs to the field of mechanical transmission technology, and is especially one kind of cosine gear and one kind of conjugate cosine gear transmission mechanism. The present invention solves the technological problem for providing one kind of cosine gear transmission mechanism with improved gear transmission performance and raised gear bearing capacity. Technologically, the present invention features that the cosine gear has cosine tooth profile curve, its conjugate gear has cosine tooth profile curve with amplitude and period determined y the required transmission ratio, two gears have near linear contact path, and the tooth profile curve of the cosine gear has the zero line of cosine curve as the pitch line, the period of cosine curve as the tooth pitch and amplitude of cosine curve as the addendum. The cosine gear transmission mechanism has great pressure angle, small slide coefficient, high contacting and bending strength and other advantages.

Description

technical field [0001] The invention belongs to the technical field of mechanical transmission, in particular to a cosine gear transmission mechanism. Background technique [0002] Since the involute gear was invented by Euler in 1765, it has always occupied a dominant position in the gear transmission due to its good kinematics characteristics, processing and assembly technology. However, the relative principal radius of curvature of this gear along the normal direction of the contact line is small, the contact strength of the gear teeth is low, and the load-carrying capacity is limited to a certain extent. The limitations of involute gears in terms of miniaturization, high speed and heavy load have increasingly restricted the development of the gear industry. In recent decades, starting from exploring new tooth shapes to tap the load-carrying capacity of gear teeth and improve its transmission performance has become a focus of attention of many scholars. Especially with ...

Claims

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Application Information

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IPC IPC(8): F16H1/06F16H55/17F16H55/08
Inventor 罗善明王建余以道陈立峰
Owner HUNAN UNIV OF SCI & TECH
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