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Gear and method for producing same

A manufacturing method and technology of gears, applied in the direction of belts/chains/gears, gear teeth, components with teeth, etc., can solve problems such as increased stress and damage, and achieve the effect of improving long-term durability characteristics

Active Publication Date: 2019-09-06
ENPLAS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this kind of gear, when meshing with the teeth of the other gear, stress tends to concentrate on the concave point of the bottom of the tooth, and the stress may increase and cause damage.

Method used

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  • Gear and method for producing same
  • Gear and method for producing same
  • Gear and method for producing same

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Experimental program
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Effect test

Embodiment Construction

[0057] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0058] figure 1 It is a front view showing the overall shape of the gear of the present invention. The gear has a plurality of teeth and transmits rotational motion between the two shafts by meshing with the teeth of the counterpart gear. For example, it is widely used in power transmission mechanisms of automobiles, precision machinery, industrial machinery and their parts.

[0059] exist figure 1In the gear 1, a plurality of teeth 3, 3... are formed on the outer peripheral side of the substantially disc-shaped web 2, and a boss 5 is formed at the center of the web 2. The shaft hole 4 where the shaft is fixed transmits the rotary motion between the two shafts. In addition, symbol P represents the pitch circle of the gear 1 .

[0060] generally as figure 2 As shown, the tooth 3 of the gear 1 is formed as a tooth shape of a standard gear having a tooth surfac...

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Abstract

A gear including plural teeth 3 to mesh with teeth of a corresponding gear to thereby transmit a rotational motion is provided. A form (b) of a tooth root side of each tooth 3 includes: a first curvedsurface c that is smoothly connected to a tooth surface a having an involute curve and has a profile expressed by a curve that is convex in an inverse direction of the involute curve of the tooth surface a; and a second curved surface d that is smoothly connected to the first curved surface c and has a profile defined by a hyperbolic function having a curve being convex in the same direction as the first curved surface c. It is possible to reduce a stress generated on the tooth root side at the time of meshing with teeth of the corresponding gear and thus to increase the strength of the teeth.

Description

[0001] This application is a divisional application of the following patent application: [0002] Application number: 201380049049.X [0003] Application date: September 17, 2013 [0004] Title of invention: gear and its manufacturing method technical field [0005] The present invention relates to a gear having a plurality of teeth that transmits rotational motion between two shafts by meshing with teeth of a counterpart gear. A gear with a tooth shape capable of generating stress and achieving high strength of the teeth and a method for manufacturing the same. Background technique [0006] Conventionally, gears used in power transmission mechanisms such as automobiles and precision machinery have been designed with various designs for increasing tooth strength. [0007] As such a gear, in a disc gear having teeth and tooth grooves, that is, a gear in the form of engagement between the teeth and the counterpart gear (pinion) interlocked through the tooth surface, there i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F16H55/08B23F5/00
CPCF16H55/0806B23F5/26Y10T74/19949Y10T409/105883
Inventor 近江宪仕
Owner ENPLAS CORP
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