Multipoint Contact Spur Gear Meshing Pair Based on Conjugate Curves

A multi-point contact, cylindrical gear technology, applied in the direction of gear transmission, belt/chain/gear, components with teeth, etc., can solve the problems of low tooth surface load capacity, large tooth surface sliding rate, tooth surface wear, etc.

Active Publication Date: 2017-11-07
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
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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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  • Multipoint Contact Spur Gear Meshing Pair Based on Conjugate Curves
  • Multipoint Contact Spur Gear Meshing Pair Based on Conjugate Curves
  • Multipoint Contact Spur 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, which includes a convex gear and a concave gear meshed with each other in multi-point contact, the meshing surface of the convex gear and the concave gear is a tubular curved surface, The contact curve formed by the meshing points on the tooth profile surface of the convex gear and the contact curve formed by the meshing points on the concave gear are conjugate curves. The multi-point contact cylindrical gear meshing pair based on the conjugate curve of the present invention, the meshing pair The meshing method is that the tooth surface of the convex gear and the tooth surface of the concave gear are in multi-point contact at the same time, and the contact track of the contact point on each tooth surface is a smooth spatial curve. The transmission inherits the meshing characteristics of the conjugate curve, and the tooth profile of the point contact has high contact strength, large load capacity, high transmission efficiency, low lubricating oil temperature rise, greatly reduced slip rate, and small wear.

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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Patent Type & Authority Patents(China)
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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