Bevel gear with combined arc tooth profile curves and involute tooth profile curves

A tooth profile curve, involute technology, applied in the direction of elements with teeth, belt/chain/gear, winch, etc., can solve the problem of hindering the bearing capacity and transmission accuracy, low bending strength of the tooth root, difficult to meet the requirements and other problems, to achieve the effect of convenient processing, good running-in, and reducing the contact stress of the tooth surface

Inactive Publication Date: 2011-05-25
CHONGQING UNIV
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  • Summary
  • Abstract
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Problems solved by technology

And the arc gear has good running-in performance, its equivalent radius of curvature is much larger than that of the involute gear, so compared with the involute gear, its contact strength is greatly improved, but it also has Some shortcomings, suc

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  • Bevel gear with combined arc tooth profile curves and involute tooth profile curves
  • Bevel gear with combined arc tooth profile curves and involute tooth profile curves
  • Bevel gear with combined arc tooth profile curves and involute tooth profile curves

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Embodiment Construction

[0021] figure 1 It is a schematic diagram of the normal section tooth profile curve of the helical gear of the present invention; figure 2 It is the overall schematic diagram of the normal section of the helical gear of the present invention; image 3 It is a spatial schematic diagram of the helical gear tooth surface of the present invention.

[0022] Such as figure 1 As shown: the tooth profile curve of the helical gear in this embodiment includes the convex arc line segment 1 of the addendum, the involute line segment 2 and the concave arc line segment 3 of the tooth root connected sequentially from the tooth tip to the tooth root. 1 and dedendum arc 3 are both tangent to involute line segment 2, and the radius of dedendum concave arc line segment 3 is greater than that of addendum convex arc line segment 1. The special tooth profile curve of the helical gear of the present invention makes the helical gear have the separability of the center distance of the involute gea...

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Abstract

The invention discloses a bevel gear with combined arc tooth profile curves and involute tooth profile curves, wherein the tooth profile curves of the bevel gear comprise a top convex-arc segment, an involute segment and a root concave-arc segment, wherein the top convex-arc segment, the involute segment and the root concave-arc segment are sequentially connected from the top to the root; the top convex-arc segment and the root concave-arc segment are both tangential to the involute segment; and the radius of the root concave-arc segment is larger than that of the top convex-arc segment. The bevel gear of the invention has the advantages of separability of center distance of the involute gear; the bevel gear is simple in manufacturing, convenient in measuring, large in contact strength of the arc gear, excellent in running-in performance and the like; the contact stress of the gear surface can be largely reduced and the loading ability of the gear surface can be largely improved. In addition, the bevel gear does not have undercutting phenomenon, and the minimum number of teeth can be one, so that the bevel gear has remarkable meaning for realizing light weight of the gear and the transmission device thereof.

Description

technical field [0001] The invention relates to a gear, in particular to a helical gear. Background technique [0002] Gear is a typical mechanical basic part, which is widely used in various fields of national economy. In mechanical transmission, gears rely on special tooth profiles to ensure their transmission accuracy. Among all kinds of gear transmission, involute gear transmission has been widely used because of its separability of center distance and many advantages such as convenient manufacture and measurement. However, involute gears also have some disadvantages. For example, the farther the meshing point is from the node, the greater the relative sliding speed between the two meshing tooth surfaces, which has great impact on the wear of the tooth surface, transmission stability, transmission efficiency and gear life. There are adverse effects; secondly, the involute external gear transmission is the meshing transmission of convex teeth to convex teeth. From the p...

Claims

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Application Information

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IPC IPC(8): F16H55/17F16H55/08
Inventor 陈兵奎李海翔梁栋李朝阳
Owner CHONGQING UNIV
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