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Ellipsoidal ring gear hob

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

Inactive Publication Date: 2007-11-07
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

Examples

Experimental program
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Embodiment Construction

[0013] The ellipsoidal hob shown in Fig. 1 and Fig. 2 is an inlay structure, which consists of a wedge screw 1, a hoop 2, a clamping wedge 3, a toothed blade 4, a cutter body 5, and a hoop screw 6. , the three cutter teeth in each row are made into one body, 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 It is called an imaginary gear of the ellipsoidal internal gear hob, and 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 the ...

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PUM

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Abstract

The present invention discloses one kind of ellipsoidal ring gear hob for machining large ring gear, and features that the hob blade has tooth form distributing in circumference normal direction to constitute one part of one virtual gear not coaxial with the hob axis. The ellipsoidal ring gear hob has toothed blades with all the cutting edges on one ellipsoidal helicoidal surface. The technological scheme of the present invention makes the ellipsoidal ring gear hob, which is superior to a spherical hob, possess high machining precision, long service life, good versatility and other advantages.

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 to 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 t...

Claims

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Application Information

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