A modern motion control system typically consists of a motion controller, a motor drive or amplifier, an electric motor, and feed- back sensors. The system might also contain other components such as one or more belt-, ballscrew-, or leadscrew-driven linear guides or axis stages.
The book has an Online Learning Center with several powerful components: MATLAB for Machine Design (featuring highly visual MATLAB simulations and accompanying source code); the "FEPC" finite element program, with accompanying Finite Element Primer and FEM Tutorials; interactive FE Exam questions for Machine Design; and Machine Design Tutorials for study of key concepts from Parts I and II of the text. Complete Problem Solutions and PowerPoint slides of bookillustrations are available for instructors, under password protection.
Motion control systems today can be found in such diverse applications as materials handling equipment, machine tool centers, chemical and pharmaceutical process lines, inspection stations, robots, and injection molding machines.
Merits of Electric Systems
Most motion control systems today are powered by electric motors rather than hydraulic or pneumatic motors or actuators because of the many benefits they offer: • More precise load or tool positioning, resulting in fewer product or process defects and lower material costs.
GEARED SYSTEMS AND VARIABLE-SPEED MECHANISMS
GEARS AND GEARING
Gear tooth terminology
Gears are versatile mechanical components capable of performing many different kinds of power transmission or motion control. Examples of these are • • • • Changing rotational speed. Changing rotational direction. Changing the angular orientation of rotational motion. Multiplication or division of torque or magnitude of rotation. • Converting rotational to linear motion and its reverse. • Offsetting or changing the location of rotating motion.
The Mechanical Science Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of mechanical components and mechanical science. The handbook includes information on diesel engines, heat