Epicyclic Drive Trains
Analysis, Synthesis, and Applications
Publication Year: 1982
Published by: Wayne State University Press
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Half-title, Title Page, Copyright
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...German universities and technical schools as well as in pertinent industries. I felt encouraged, therefore, to present its translation to English-speaking engineers. The publication of this edition is due to the painstaking and careful work of the translator, Mr. Werner G. Mannhardt, whose logical train of thought is of particular...
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I. PROPERTIES OF EPICYCLIC DRIVE TRAINS
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A. Differentiation from Conventional Drive Trains
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Revolving drive trains, and their laws of motion, stem from the conventional drive trains with fixed axes of rotation. Therefore, we shall beginwith a brief discussion of the fundamental principles governing the opera-These principles are valid for all types of conventional drive trains such asgear trains, traction drives, belt drives, or hydraulic transmissions, as long...
B. Simple Revolving Drive Trains, Terminology, Fundamental Principles, Types
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..."Simple revolving drive trains" are simple planetary drive trains, orother revolving drive mechanisms which originated from simple conventional transmissions by allowing the latter's housings to rotate about centralaxes (sec. 2). Consequently, revolving drive trains may have three rotating shafts and frequently are referred to as "three-shaft transmissions" (or, if a...
II. SIMPLE REVOLVING DRIVE TRAINS
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A. Working Principles
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The basic laws of the simple revolving drive trains define fundamental relationships between the speeds, the torques and the power of their shafts,as well as their efficiencies. They shall be derived for the general case of the three-shaft transmission and, consequently, are valid also for two-shaft epicyclic transmissions, and basic transmissions which are merely special cases...
B. Graphical Analysis
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In the previous chapter it has been shown that the function of a revolving drive can be analyzed without consideration of each detail of its design. Rather, a kinematic analysis can be performed when only the basic speed-ratio /o is known, which, according to worksheet 3, also determines the posi...
C. Design and Operating Characteristics of Simple Planetary Transmissions
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Theoretically, all the simple planetary transmission designs which areshown in figs. 19 to 43, could be designed with any basic speed-ratio. Practically, however, the range of the basic speed-ratios of each type is limiteda) For economical reasons, an external gear stage should not exceed aspeed-ratio of i = -4 to -8. For higher speed-ratios, multi-stage transmis-...
III. COMPOUND EPICYCLIC TRANSMISSIONS
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A. Symbols and Types
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For compound drives, which consist of several epicyclic transmissions,the symbols 1, 2, s, and p, as defined in the previous part I (sec. 4), will beused to denote the gears or shafts of the first transmission. The corresponding gears or shafts of the second transmission are then denoted accordingly by the primed symbols, 1', 2', s'', p" and the gears or shafts of a third...
B. Operating Characteristics of Compound Epicyclic Transmissions
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Simple bicoupled transmissions with two degrees of mobility have two degrees of freedom and three connected shafts. In this respect they are completely similar to the simple epicyclic transmissions as already pointed out by Wolf . The utilization of this analogy leads to a substantial simplification of the analysis and, especially, the synthesis of these bicoupled trans-...
IV. DESIGN HINTS
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Complete List of Guide Rules
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About the Author
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Herbert W. Mtiller obtained his doctorate at the Technische Hochschulein Dresden in 1961. He is now chairman of machine elements at the articles in technical journals in Germany, and has presented papers to the American Society of Mechanical Engineers on several occasions.The manuscript was prepared for publication by Jacqueline A. Nash....
Page Count: 376
Publication Year: 1982