Author: Fan Yu Chen Publisher: Pergamon ISBN: Category : Technology & Engineering Languages : en Pages : 564
Book Description
This volume demonstrates that the progressive mainstream has a governing agenda based on five preeminent values-'strong democracy, demand-side growth, children first, post-cold war peace' and 'respect for law'-values as much at odds with prevailing conservative orthodoxy as Copernicus was from Ptolemy.'-from Mark Green's ^IIntroduction Distributed by arrangement with the Democracy Project.^R
Author: J. Angeles Publisher: Springer Science & Business Media ISBN: 940113572X Category : Science Languages : en Pages : 274
Book Description
1. 1 Preliminary Concepts A cam mechanism is a mechanical system consisting of three basic components: a driving element, called the cam; a driven element, termed the follower; and a fixed frame. Sometimes, an intermediate element is introduced between the cam and the follower with the purpose of improving the mechanism performance. This element is called the roller because function is to produce a pure-rolling relative motion be tween the cam and the follower. The purpose ofa cam mechanism is the transmission of power or information. In applications concerning power transmission, the main good to be transmitted is force or torque; in applications ofinformation transmission, the main good transmitted takes the form of motion signals. Most modern appli cations of cam mechanisms, to be described shortly, are of the former type. Cam mechanisms used for information transmission were traditionally found in measuring instruments. With the advent ofmodern microprocessor-based hardware, this typeof application is becoming less common. Nevertheless, cam mechanisms are still used in a wide spectrum of applications, especially in automatic machines and instruments, textile machinery, computers, printing presses, food-processing equipment, internal combustion engines, control systems, and photographic equipment (Prenzel, 1989). In the design of cam mechanisms, the engineer performs several activities, namely, task definition, synthesis, analysis, optimization, and dynamic simulation. These tasks do not always follow this order. In fact, some loops may appear in the foregoing tasks, such as those illustrated in Fig. 1. 1. 1.
Author: Preben W. Jensen Publisher: CRC Press ISBN: 1000146723 Category : Computers Languages : en Pages : 452
Book Description
This book provides the methods of solving the problems connected with cams—their design, application, and manufacture. It introduces the improvement of numerically controlled machine tools and the availability of computers in general. The book is useful for practicing and design engineers.
Author: Jensen Publisher: CRC Press ISBN: 9780824775124 Category : Technology & Engineering Languages : en Pages : 452
Book Description
This book provides the methods of solving the problems connected with cams--their design, application, and manufacture. It introduces the improvement of numerically controlled machine tools and the availability of computers in general. The book is useful for practicing and design engineers.
Author: J. Angeles Publisher: Springer ISBN: 9789401135733 Category : Science Languages : en Pages : 259
Book Description
1. 1 Preliminary Concepts A cam mechanism is a mechanical system consisting of three basic components: a driving element, called the cam; a driven element, termed the follower; and a fixed frame. Sometimes, an intermediate element is introduced between the cam and the follower with the purpose of improving the mechanism performance. This element is called the roller because function is to produce a pure-rolling relative motion be tween the cam and the follower. The purpose ofa cam mechanism is the transmission of power or information. In applications concerning power transmission, the main good to be transmitted is force or torque; in applications ofinformation transmission, the main good transmitted takes the form of motion signals. Most modern appli cations of cam mechanisms, to be described shortly, are of the former type. Cam mechanisms used for information transmission were traditionally found in measuring instruments. With the advent ofmodern microprocessor-based hardware, this typeof application is becoming less common. Nevertheless, cam mechanisms are still used in a wide spectrum of applications, especially in automatic machines and instruments, textile machinery, computers, printing presses, food-processing equipment, internal combustion engines, control systems, and photographic equipment (Prenzel, 1989). In the design of cam mechanisms, the engineer performs several activities, namely, task definition, synthesis, analysis, optimization, and dynamic simulation. These tasks do not always follow this order. In fact, some loops may appear in the foregoing tasks, such as those illustrated in Fig. 1. 1. 1.
Author: Harold A. Rothbart Publisher: McGraw-Hill Professional Publishing ISBN: Category : Computers Languages : en Pages : 632
Book Description
Packed with hundreds of detailed illustrations! THE DEFINITIVE GUIDE TO CAM TECHNOLOGY! The transformation of a simple motion, such as rotation, into linear or other motion is accomplished by means of a cam -- two moving elements mounted on a fixed frame. Cam devices are versatile -- almost any specified motion can be obtained. If you work with industrial applications where precision is essential, the "Cam Design Handbook" is a key resource you'll need handy at all times. You'll find thorough, detailed coverage of cams in industrial machinery, automotive optimization, and gadgets and inventions. Written with tremendous practical insight by engineering experts, the "Cam Design Handbook" gathers the information you need to understand cam manufacture and design. Comprehensive in scope and authoritative in nature, the book delivers a firm grasp of: * The advantages of cams compared to other motion devices * Computer-aided design and manufacturing techniques * Numerical controls for manufacturing * Cam size and profile determination * Dynamics of high-speed systems Get comprehensive coverage of: * Basic curves * Profile geometry * Stresses and accuracy * Camwear life predictions * Cam system dynamics * And more!
Author: Harold A. Rothbart Publisher: McGraw Hill Professional ISBN: 0071433287 Category : Technology & Engineering Languages : en Pages : 618
Book Description
The cam, used to translate rotary motion into linear motion, is an integral part of many classes of machines, such as printing presses, textile machinery, gear-cutting machines, and screw machines. Emphasizing computer-aided design and manufacturing techniques, as well as sophisticated numerical control methods, this handbook allows engineers and technicians to utilize cutting edge design tools. It will decrease time spent on the drawing board and increase productivity and machine accuracy. * Cam design, manufacture, and dynamics of cams * The latest computer-aided design and manufacturing techniques * New cam mechanisms including robotic and prosthetic applications
Author: M.A. González-Palacios Publisher: Springer Science & Business Media ISBN: 9401118906 Category : Technology & Engineering Languages : en Pages : 261
Book Description
Despite advances in robot technology, in which industrial manipulators have replaced mechanisms, cam mechanisms still find important industrial applications in the textile, food processing and manufacturing industries. This book is a modern, up-to-date treatise on the important subject of cam synthesis. Cam mechanisms have been studied from different points of view, namely, kinematic synthesis, dynamic synthesis, analysis, design, optimization and manufacturing. This book is oriented to the kinematic synthesis of cam mechanisms in a unified framework, i.e. that spatial, spherical and planar cam mechanisms are integrated in the same formulation. Traditionally, the synthesis of the three types of cam mechanisms has been approached using independent formulations. With a unified formulation, both well known types of cam mechanisms, as well as novel cam mechanisms can be synthesized, as shown in the book. Moreover, since all the design parameters are considered in a unified framework, the optimization theory of cam mechanisms can be applied systematically, i.e. the criteria applied for the optimization of planar cam mechanisms, which can be found to some extent in the literature, can be complemented in order to provide general criteria for the optimization of spherical and spatial cam mechanisms. The underlying philosophy of the book has been to exploit sound mathematical and kinematical tools of analysis and synthesis that could be used only with the available current software and hardware. The approach and tools introduced in this book can assist the designer in producing a broad spectrum of mechanisms than those described in the book. This will be an invaluable reference for engineering designers.
Author: J J Williams Publisher: Springer Science & Business Media ISBN: 1447145631 Category : Technology & Engineering Languages : en Pages : 208
Book Description
Modern design methods of Automotive Cam Design require the computation of a range of parameters. This book provides a logical sequence of steps for the derivation of the relevant equations from first principles, for the more widely used cam mechanisms. Although originally derived for use in high performance engines, this work is equally applicable to the design of mass produced automotive and other internal combustion engines. This work may also be applicable for cams used in other areas such as printing and packaging machinery. Introduction to Analytical Methods for Internal Combustion Engine Cam Mechanisms provides the equations necessary for the design of cam lift curves with an associated smooth acceleration curve. The equations are derived for the kinematics and kinetics of all the mechanisms considered, together with those for cam curvature and oil entrainment velocity. This permits the cam shape, all loads and contact stresses to be evaluated, and the relevant tribology to be assessed. The effects of asymmetry on the manufacture of cams for finger follower and offset translating curved followers is described, and methods for transformation of cam shape data to that for a radial translating follower are given. This permits the manufacture and inspection by a wider range of CNC machines. The calculation of unsteady camshaft torques is described and an outline given for evaluation of the components for the lower engine orders. Although the theory, use and design, of reactive pendulum dampers are well documented elsewhere, these subjects have also been considered for completeness. The final chapter presents analysis of push rod mechanisms, including a four bar chain mechanism, which is more robust Written both as a reference for practising automotive design and development Engineers, and a text book for automotive engineering students, Introduction to Analytical Methods for Internal Combustion Engine Cam Mechanisms gives readers a thorough introduction into the design of automotive cam mechanisms, including much material not previously published.
Author: Robert L Norton Publisher: ISBN: 9781636491264 Category : Technology & Engineering Languages : en Pages : 130
Book Description
This book attempts to rectify a problem that the author has observed during his fifty years of consulting on cam design with many companies. He frequently encountered situations where the cams with problems were not properly designed, which led to the bad result. As a professor who has taught cam design and machine design at universities for over 40 years, he knows, first hand, that mechanical engineering students in most U.S. schools were never taught about cams and cam design. Most of the textbooks on related subjects either ignore cams or present information that is both obsolete and wrong about cams in many respects. Proper cam design only requires the adherence to a few simple rules. The mathematics involved only requires an understanding of algebra, trigonometry, and simple differential calculus. Calculation of cam mathematics really requires the use of a computer. At a minimum, a spreadsheet can do the calculations, but they are more easily done with an equation processor such as MATLAB, MathCad, or TKSolver, all inexpensive engineering tools. This book also provides a free copy of the author's cam design program, DYNACAM STUDENT EDITION, which is also distributed with others of his many textbooks. This program will allow you to create cams such as are defined in this book.
Author: Fan Yu Chen
Author: J. Angeles
Author: Preben W. Jensen
Author: Jensen
Author: J. Angeles
Author: Harold A. Rothbart
Author: Harold A. Rothbart
Author: M.A. González-Palacios
Author: J J Williams
Author: Robert L Norton