Single-tangent double-circular-arc gear

A double arc and gear technology, applied in the direction of belts/chains/gears, components with teeth, portable lifting devices, etc., can solve problems such as complexity, increased design and manufacturing difficulties, and inability to meet gears, etc., to achieve gear teeth The structure is simple, it is good for storing lubricating oil, and the effect of large bearing capacity

Inactive Publication Date: 2012-06-13
许奉成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these characteristics of the double-arc gear are determined by the structure of each tooth of the double-arc gear, and the structure of each tooth is determined by the tooth profile parameters, because the parameters of the double-arc gear tooth profile are very It is complex, which directly increases the difficulty of design and manufacturing; moreover, the minimum number of undercut teeth of double circular arc gears is mostly 17 teeth, which cannot meet the requirements of different working conditions for gears with different numbers of teeth

Method used

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  • Single-tangent double-circular-arc gear
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  • Single-tangent double-circular-arc gear

Examples

Experimental program
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Effect test

Embodiment 1

[0020] see figure 1 : A single-cut double arc gear, the gear 4 has a plurality of teeth 5, and each tooth 5 has two side surfaces, an addendum part and a dedendum part. Among them, the addendum part is formed by the addendum trace 1, and the addendum trace 1 is a straight line; the dedendum part is formed by the combination of the arc-shaped transition trace 8 and the dedendum trace 2, and the radius of the transition trace 8 is 0.5m (m represents the modulus, the same below), taking m=2 mm (the same below), then the radius of the transition trace 8 is 1 mm, and the dedendum trace 2 is a straight line; and on the same side there is another An arc-shaped convex trace 6 and an arc-shaped concave trace 7, the radius of the convex trace 6 is equal to the radius of the concave trace 7, and the radii of the convex trace 6 and the concave trace 7 are 1m respectively, then the convex trace The radii of the lines 6 and the concave traces 7 are 2 mm, respectively. One end of the conve...

Embodiment 2

[0022] see figure 1 : A single-cut double arc gear, the gear 4 has a plurality of teeth 5, and each tooth 5 has two side surfaces, an addendum part and a dedendum part. Among them, the addendum part is formed by the addendum trace 1, and the addendum trace 1 is a straight line; the dedendum part is formed by the combination of the arc-shaped transition trace 8 and the dedendum trace 2, and the radius of the transition trace 8 is 0.4m, take m=2 mm (the same below), then the radius of the transition trace 8 is 0.8 mm, and the dedendum trace 2 is a straight line; on the same side there is an arc-shaped convex trace 6 and a The arc-shaped concave trace 7, the radius of the convex trace 6 and the radius of the concave trace 7 are equal, and the radii of the convex trace 6 and the concave trace 7 are respectively 2m, then the radius of the convex trace 6 and the concave trace 7 4mm respectively. One end of the convex trace 6 is in contact with the addendum trace 1 of the addendum ...

Embodiment 3

[0024] see figure 1 : A single-cut double arc gear, the gear 4 has a plurality of teeth 5, and each tooth 5 has two side surfaces, an addendum part and a dedendum part. Among them, the addendum part is formed by the addendum trace 1, and the addendum trace 1 is a straight line; the dedendum part is formed by the combination of the arc-shaped transition trace 8 and the dedendum trace 2, and the radius of the transition trace 8 is 0.3m, take m=2 mm (the same below), then the radius of the transition trace 8 is 0.6 mm, and the dedendum trace 2 is a straight line; on the same side there is an arc-shaped convex trace 6 and a The arc-shaped concave trace 7, the radius of the convex trace 6 and the radius of the concave trace 7 are equal, the radius of the convex trace 6 and the concave trace 7 is 3m respectively, then the radius of the convex trace 6 and the concave trace 7 6mm respectively. One end of the convex trace 6 is in contact with the addendum trace 1 of the addendum part...

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Abstract

The invention discloses a single-tangent double-circular-arc gear, which is provided with a plurality of gear teeth, wherein a cambered convex trace and a cambered concave trace are formed on the same side face of each gear tooth; one end of the convex trace is contacted with a trace on the top of each tooth top; one end of the concave trace is contacted with a cambered transitional trace; the transitional trace is combined with a section of straight line to form a tooth root part; the convex trace is externally tangent and contacted with the concave trace at a position passing through a tangent line to form a tangent point; an included angle formed between the horizontal line passing through the tangent point and a connecting line of the circle centers of the convex trace and the concave trace is 0 to 30 degrees; and contact points of the concave trace and the transitional trace are always kept between a tooth root trace and a tooth top gap line. The single-tangent double-circular-arc gear has the characteristics of high contact strength, high bearing capacity, steady engagement, reliable operation, low impact noise, low sensitivity to central distance error, long service life and the like, and has the characteristics of simple gear tooth structure, high tooth root strength, large gear engagement area, small tooth surface contact stress, convenience for processing and manufacturing, high processing precision and the like.

Description

technical field [0001] The invention belongs to mechanical elements for transmitting motion and power, specifically a gear, more specifically a single-cut double-arc gear. Background technique [0002] There are mainly two types of basic tooth profiles of double arc gears currently used in production, one of which is that there is an arc-shaped convex trace and an arc-shaped concave trace on the same side of each tooth , one end of the convex trace is in contact with the addendum trace, one end of the concave trace is in contact with the arc-shaped transition trace, the transition trace and the dedendum trace are combined to form the dedendum part, and the convex and concave traces The contact is connected by a common tangent segment; the other is that there is an arc-shaped convex trace and an arc-shaped concave trace on the same side of each tooth, and one end of the convex trace is in contact with the tooth-top trace , one end of the concave trace is in contact with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F16H55/08
Inventor 许奉成
Owner 许奉成
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