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  internal gear
Finite element analysis of internal gear in high-speed planetary gear units
      
Mathematic models of the surfaces of crown gear and internal gear are established.
      
The author proposes a modified geometry of a rack cutter to generate the driving gear of internal gear pairs.
      
Based on the double envelope concept, the driven gear of a set of internal gear pairs can be determined.
      
In this study, the Von-Mises stress analysis of the reshaped internal gear pairs was carried out and the specific phenomena was also investigated.
      
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This paper is the first report on theoretical research of the involute,internallyengaged,double-enveloping worm gear drive.It gives a theoretical presentation of theapplication of this kind of worm gears.Here are some of its characteristics:1.The tooth profile curve on the axial sections of the worm is an involute.2.This wormgear is roughly the same in engagement as the in ernal gear.3.Both members throat and wrap around each other.4.The hob used to cut the wormwheel is the same as that used to cut involutegears.This...

This paper is the first report on theoretical research of the involute,internallyengaged,double-enveloping worm gear drive.It gives a theoretical presentation of theapplication of this kind of worm gears.Here are some of its characteristics:1.The tooth profile curve on the axial sections of the worm is an involute.2.This wormgear is roughly the same in engagement as the in ernal gear.3.Both members throat and wrap around each other.4.The hob used to cut the wormwheel is the same as that used to cut involutegears.This wormgear does not require very accurate mounting.It can have a greaterload capability and higher efficiency.This paper includes:(1) the equation for worm tooth surface of the involute,internally engaged,double-enveloping worm gear drive (see Formula 4);(2) peculiarphenomenon of double-enveloping wormgears with the same turn ratio (“low-lyingland”);(3) line of action in the central section (straight line);(4) theoretical basisof the bobbing process and other advantages.

渐开线内啮合弧面蜗杆是我们近几年来提出和研制的一种新型蜗杆传动。蜗杆的轴断面形状为一渐开线的内齿轮齿廓。本蜗杆有如下三个基本特征:(1)是内啮合,(2)是双包围;(3)是渐开线。本蜗杆可以利用现成渐开线齿轮滚刀切制蜗轮,对制造和安装误差敏感性弱,避免了直线状弧面蜗杆会因误差造成的承载能力显著降低的弊病。实践证明,本蜗杆的承载能力大、效率高。本文从理论上阐明了提出这种蜗杆的依据。

Quantitative analyses are made of this worm gear and the results of its deve-lopment presented.Contact lines between worm and worm gear and relative curvature are the mainfactors that influence the properties of worm gear drive.To illustrate,a figure ofcontact lines is shown and the values of relative curvatures etc.are listed,wherecenter distance A_0=150,module m=6,ratio of revolution i_(12)=41.These values wereobtained with the help of digital computer.For comparison,the authors have alsolisted the corresponding...

Quantitative analyses are made of this worm gear and the results of its deve-lopment presented.Contact lines between worm and worm gear and relative curvature are the mainfactors that influence the properties of worm gear drive.To illustrate,a figure ofcontact lines is shown and the values of relative curvatures etc.are listed,wherecenter distance A_0=150,module m=6,ratio of revolution i_(12)=41.These values wereobtained with the help of digital computer.For comparison,the authors have alsolisted the corresponding values of Archimedes' and Hindley worm gear with the sameparameters.It can be seen that the values of the involute,internally engaged,double-enveloping worm gear drive are far better than those of Archimedes'.Its drive beha-viour is thought to be better than that of Hindley worm gear.The paper gives a brief description of the manufacturing method of this worm andworn gear.Essentially,this worm gear was hobbed with the ordinary hob for iovolutegears The hobbing process consists of four steps.The approximate degree of the toothsurface of this worm gear is good;the duration of transforming approximate surfaceinto conjugate surface is short;and the sensibility to the deviation in working andassembling of this worm gear drive is not remarkable.The absence of necessity toprocess the complicated Hindley hob will make it easier for this worm to be popu-larized.The efficiency of this worm gear drive is found to be up to 0.717 at a rotationalspeed of 1610 rpm.As compared with Archimedes' worm,its performance has provedmuch better either in load-carrying capacity or in drive efficiency.

在《渐开线内啮合弧面蜗杆》的第一报中,已经详尽地阐明了提出这种蜗杆的理论依据。本文对此种蜗杆作了定量分折并报告研制结果。经试验在传动比为41,蜗杆转速为1610转/分时,效率达0.717。比之阿基米德蜗杆,无论承载能力和效率都有显著的提高,而无须制造复杂的弧面蜗轮滚刀又使这种蜗杆便于推广.

An objection is raised in the paper to the simultaneous solution and the supplement of the differential iteration which are brought forth in the article "Calculation of Addendum Modification of Internal Gear Pair with Minor Difference in Tooth Number".

本文对《少齿差内啮合齿轮变位系数的计算》一文所提出的联立求解法和对微分逼近法的改进提出了异议。

 
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