Elliptical gear profile generator

A technology of elliptical gears and circular gears, which is applied in the field of elliptical gear fan Chengyi, can solve the problems such as the complex process of elliptical gears, and achieve the effect of envelope motion, simple structure and low production cost

Inactive Publication Date: 2013-03-27
LIAONING INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a method of drawing the tooth profile curve of the elliptical gear with simple components to solv

Method used

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  • Elliptical gear profile generator

Examples

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Embodiment 1

[0016] see Figure 1 to Figure 5 , the five accompanying drawings show a schematic view of the appearance structure of an embodiment of the oval gear fan forming instrument proposed by the present invention. The Fan Chengyi includes a base 1 , an oval gear 2 , a circular gear 3 , a standard gear 4 and a gland 5 . Wherein, the upper surface 11 of the base 1 is provided with an inwardly recessed circular recess 12 and an oval groove 13 , and a shaft hole 14 is provided in the middle region thereof. The upper and lower sides of the oval gear 2 are respectively provided with an upper shaft 21 and a lower shaft 22 , and the lower shaft 22 of the oval gear 2 is fixed in the shaft hole 14 of the base 1 so that the oval gear 2 is fixed on the base 1 . The middle part of the circular gear 3 is provided with a circular gear shaft 31, and the standard gear 4 is fixed on the circular gear shaft 31, that is, the two are coaxial, and the circular gear 3 is located at the circular recess ...

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Abstract

The invention relates to an elliptical gear profile generator. The elliptical gear profile generator comprises a base, wherein an elliptical gear, a circular gear and a standard gear are arranged on the base; the circular gear is engaged with the elliptical gear; the standard gear is coaxial to the circular gear; an elliptical groove which is similar to the elliptical gear in shape is arranged on the base at the outer periphery of the elliptical gear; and the circular gear shaft extends to the elliptical gear. The profile generator can be used for regenerating the profile curve of the to-be-machined elliptical gear by virtue of an envelope curve of a tool profile curve, is very simple in structure, and low in manufacturing cost.

Description

technical field [0001] The invention relates to an elliptical gear fan forming instrument, in particular to a fan forming instrument whose envelope curve reproduces the tooth profile curve of an elliptical gear to be processed. Background technique [0002] Fan Chengyi in the prior art has a disc and a rack with a straight edge mounted on the lower part of the disc. The diameter of the disc is equal to the base circle of the gear to be demonstrated, so that the disc is tangent to the straight edge of the rack. When the disc is purely rolling by friction, the normal motion of the gear and the tool can be demonstrated. Although Fan Chengyi with this structure can demonstrate the gear fan-forming experiment, but because the drawing paper on the disc is also set vertically on the disc, when the disc rotates, the drawing paper is easy to slip, and the tooth shape drawn by it is not standard ; Another problem is that this kind of Fan Chengyi cannot draw elliptical tooth shapes. ...

Claims

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Application Information

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IPC IPC(8): B43L11/055
Inventor 黄志东杜运普景春龙史册王宇
Owner LIAONING INST OF SCI & TECH
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