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Ellipsoidal ring gear hob

A technology of internal gears and ellipsoids, which is applied to gear teeth manufacturing tools, gear teeth manufacturing devices, belts/chains/gears, etc., and can solve problems such as unmanufacturable and large hob diameters

Inactive Publication Date: 2009-07-01
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With this scheme, the ellipsoidal hob not only retains the advantages of high machining accuracy, long service life, and good versatility, but also solves the problem that the larger the modulus of the spherical hob, the larger the diameter of the hob, so that it cannot be manufactured.

Method used

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  • Ellipsoidal ring gear hob
  • Ellipsoidal ring gear hob
  • Ellipsoidal ring gear hob

Examples

Experimental program
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Embodiment Construction

[0013] Such as figure 1 , figure 2 The ellipsoidal hob shown is a toothed structure, which is composed of wedge screw 1, hoop 2, clamping wedge 3, toothed blade 4, cutter body 5, and hoop screw 6, and each row of three The two cutter teeth are integrated, and the axial profile of the elliptical internal gear hob is distributed on a circle with a pitch circle radius R according to the normal direction. It is a part of a gear, and this gear is also called an ellipsoidal internal gear. The imaginary gear of the gear hob, the center of the imaginary gear is not on the axis line of the ellipsoidal internal gear hob. It is a gear with a larger radius and more teeth than the imaginary gear of the spherical hob, or when the radii R of the imaginary gears of the ellipsoidal hob and the spherical hob are the same, the outer radius of the ellipsoidal hob is larger than that of the spherical hob. The radius of the outer circle of the hob should be smaller by an L value.

[0014] When ...

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PUM

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Abstract

The invention discloses an elliptical internal gear hob for processing large internal gears, which is characterized in that: the tooth shape of the toothed blade (4) is distributed in the direction of the normal line of the circumference, and is a part of an imaginary gear. The center of the pitch circle of the imaginary gear is not on the axis line of the ellipsoidal internal gear hob, and the ellipsoidal internal gear hob is in the shape of an ellipsoid, and the cutting edges of all toothed blades (4) on the circumference of the ellipsoidal internal gear hob are on the An ellipsoid helicoid. With this scheme, the ellipsoidal internal gear hob not only retains the advantages of high machining accuracy, long service life, and good versatility, but also solves the problem that the larger the modulus of the spherical hob, the larger the diameter of the hob, so that it is difficult to manufacture and use. All bring difficulty even can't make or use the problem.

Description

technical field [0001] The invention relates to an internal gear processing tool, in particular to an elliptical internal gear hob. technical background [0002] Gear shaping is currently the most commonly used method for machining internal gears based on the generating principle. At present, the maximum modulus of the gear shaper cutter that domestic tool factories can manufacture is 15, while the diameter of the internal gear processed by the largest gear shaper machine in domestic heavy machinery factories is 1.5m ~ 2m. Large internal gears that exceed the above range cannot be processed domestically and can only be imported. The gear hobbing machine is much larger and can process large gears with a length of 5 meters. As long as there is a high-precision, easy-to-manufacture internal gear hob, the processing of high-precision and larger modulus internal gears can be realized. The research on internal gear hobs at home and abroad has a history of several decades, but th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23F21/16
Inventor 崔云起
Owner YANSHAN UNIV
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