Multi-point contact cylindrical gear meshing pair based on conjugate curves

A multi-point contact, cylindrical gear technology, used in gear transmissions, belts/chains/gears, components with teeth, etc., can solve the problems of large tooth surface slip rate, tooth surface wear, and low tooth surface bearing capacity.

Active Publication Date: 2015-12-30
CHONGQING UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

Traditional gear transmissions such as helical gear transmission, worm gear transmission, bevel gear pair, quasi-hyperbolic pair, etc., the tooth surfaces are all conjugate surfaces, and the meshing tooth profiles are convex tooth profiles. During the meshing process, it is usually a line contact, so The bearing capacity of the tooth surface is low, the sliding rate between the tooth surfaces is large, and the tooth surface wears seriously

Method used

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  • Multi-point contact cylindrical gear meshing pair based on conjugate curves
  • Multi-point contact cylindrical gear meshing pair based on conjugate curves
  • Multi-point contact cylindrical gear meshing pair based on conjugate curves

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Embodiment Construction

[0098] Such as figure 1 , figure 2 , image 3 In the shown embodiment, the three-segment tooth profile curves are selected in the form of arc curves in the local different sections of the tooth surface, and the optimum point contact pressure angle is determined to realize the general distribution of three-point contact in different sections. Such as figure 1 , 2 As shown, the convex and concave tubular meshing tooth surfaces constructed based on the conjugate curve meshing theory form a paired meshing pair, and the meshing pair moves along the contact point track in the axial direction, and the two are in general three-point contact in the local different sections of the tooth surface;

[0099] The cylindrical helix is ​​selected as the conjugate contact curve of the tooth surface. Such as image 3 As shown, in the space coordinate system l 1 , l 2 and l 3 are three helical curves on the cylindrical surface, satisfying the curve l 2 relative curve l 1 Rotation angle...

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Abstract

The invention discloses a multi-point contact cylindrical gear meshing pair based on conjugate curves. The multi-point contact cylindrical gear meshing pair comprises a convex-tooth gear and a concave-tooth gear which are in mutual multi-point contact meshing, wherein a meshing curve surface of the convex-tooth gear and the concave-tooth gear is a tubular curve surface; a contact curve consisting of meshing points on a tooth profile curve surface of the convex-tooth gear and a contact curve consisting of meshing points on the convex-tooth gear are the conjugate curves. According to the multi-point contact cylindrical gear meshing pair based on the conjugate curves, the meshing mode of the meshing pair is simultaneous multi-point contact of the tooth surfaces of the convex-tooth gear and the concave-tooth gear, and contact tracks of the contact points on all tooth surfaces are smooth space curves. The transmission integrates the meshing characteristics of the conjugate curves, tooth profile contact strength of point contact is high, the bearing capacity is high, the transmission efficiency is high, the lubricating oil temperature rise is slow, the sliding rate is reduced greatly, and the wear is low.

Description

technical field [0001] The invention belongs to the technical field of gear transmission, in particular to a multi-point contact cylindrical gear meshing pair based on conjugate curves. Background technique [0002] As a typical mechanical basic part, the gear determines the performance of the equipment to a large extent, so the design of high-performance gear transmission components is also of great significance and engineering practical value. Traditional gear transmissions such as helical gear transmission, worm gear transmission, bevel gear pair, quasi-hyperbolic pair, etc., the tooth surfaces are all conjugate surfaces, and the meshing tooth profiles are convex tooth profiles. During the meshing process, it is usually a line contact, so The bearing capacity of the tooth surface is low, the sliding rate between the tooth surfaces is large, and the wear of the tooth surface is serious. [0003] The development of production and technology has put forward higher requireme...

Claims

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Application Information

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IPC IPC(8): F16H1/04
CPCF16H1/04F16H55/0826F16H55/17
Inventor 陈兵奎梁栋谭儒龙李朝阳
Owner CHONGQING UNIV
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