Machine Elements in Mechanical Design

Machine Elements in Mechanical Design

Using the most up-to-date information, this book provides a practical approach to designing machine elements in the context of complete mechanical design. Covering some of the primary machine elements such as belt drives, chain drives, gears, shafts, keys, couplings, seals, and rolling contact bearings. It also covers plain surface bearings, linear motion elements, fasteners, springs, machine frames, bolted connections, welded joints, electric motors, controls, clutches, and brakes. This book is for any individual design professional for which a practical approach to mechanical design, based on sound engineering principles, is desired. Machine Elements in Mechanical Design provides a practical approach to designing machine elements in the context of complete mechanical designs. Extensive updating for the fourth edition includes new photographs of commercially available machine components, new design data for some elements, new or revised standards, new end-of-chapter references, and listings of Internet sites. Strengths of this text include: The three-part structure that was introduced in the third edition has been maintained. - Part I focuses on reviewing and upgrading readers' understanding of design philosophies, the principles of strength of materials, the design properties of materials, combined stresses, design for different types of loading, and the analysis and design of columns. - Part II is organized around the design of a complete power transmission system, emphasizing the interrelationships among machine elements in addition to their unique characteristics. Included are belt drives, chain drives, gears, shafts, keys, couplings, seals, rolling contact bearings, and completion of the design of a power transmission. - Part III presents methods of analysis and design of plain surface bearings, linear motion elements, fasteners, springs, machine frames, bolted connections, welded joints, electric motors, controls, clutches, and brakes. - A CD-ROM for the mechanical design software MDESIGN is included with each book. This powerful software enables users to quickly complete the design of many of the machine elements discussed in the book. - Extensive lists of Internet sites and references at the end of each chapter assist readers in accessing additional information about the concepts presented in this book and in finding data for commercially available products that can be applied to designs. - Computer spreadsheets facilitate the design and analysis of many machine elements. - The Big Picture, You Are the Designer, and Objectives features help readers draw on their own experiences and appreciate what competencies they will acquire from the study of each chapter. The objective of this book is to provide the concepts, procedures, data, and decision analysis techniques necessary to design machine elements commonly found in mechanical devices and systems. Students completing a course of study using this book should be able to execute original designs for machine elements and integrate the elements into a system composed of several elements. This process requires a consideration of the performance requirements of an individual element and of the interfaces between elements as they work together to form a system. For example, a gear must be designed to transmit power at a given speed. The design must specify the number of teeth, pitch, tooth form, face width, pitch diameter, material, and method of heat treatment. But the gear design also affects, and is affected by, the mating gear, the shaft carrying the gear, and the environment in which it is to operate. Furthermore, the shaft must be supported by bearings, which must be contained in a housing. Thus, the designer should keep the complete system in mind while designing each individual element. This book will help the student approach design problems in this way. This text is designed for those interested in practical mechanical design. The emphasis is on the use of readily available materials and processes and appropriate design approaches to achieve a safe, efficient design. It is assumed that the person using the book will be the designer, that is, the person responsible for determining the configuration of a machine or a part of a machine. Where practical, all design equations, data, and procedures needed to make design decisions are specified. It is expected that students using this book will have a good background in statics, strength of materials, college algebra, and trigonometry. Helpful, but not required, would be knowledge of kinematics, industrial mechanisms, dynamics, materials, and manufacturing processes. Among the important features of this book are the following: It is designed to be used at the undergraduate level in a first course in machine design. - The large list of topics allows the instructor some choice in the design of the course. The format is also appropriate for a two-course sequence and as a reference for me