DNT 242 MACHINE MECHANISM ELEMENTS CHAPTER 1 Introduction

DNT 242 – MACHINE MECHANISM ELEMENTS CHAPTER 1 Introduction to Machine Mechanism Elements 1

CH. 1 - Introduction to Machine Mechanism Elements What is mechanism? • A mechanism is a device designed to transform input forces and movement into a desired set of output forces and movement. • Mechanism generally consist of moving components such as gears and gear trains, belt and chain drives, cam and follower mechanisms, and linkages. 2

CH. 1 - Introduction to Machine Mechanism Elements CH. 1 - Introduction to Machine Mechanism What is mechanism? Elements • The combination of force and movement defines power, and a mechanism is designed to manage power in order to achieve a desired set of forces and movement. • A mechanism is usually a piece of a larger process or mechanical system. • Sometimes an entire machine may be referred to as a mechanism. Examples are the steering mechanism in a car, or the winding mechanism of a wristwatch. Multiple mechanisms are machines. 3

CH. 1 - Introduction to Machine Mechanism Elements CH. 1 - Introduction to Machine Mechanism Types of Mechanisms Elements v Kinematic pairs v Planar mechanism v Spherical mechanism v Spatial mechanism v Gears and gear trains v Cam and follower mechanisms v Linkages v Flexure mechanisms 4

CH. 1 - Introduction to Machine Mechanism Elements CH. 1 - Introduction to Machine Mechanism Focus on this types Elements v Shaft and bearing v Gears and gear trains v Cam and follower mechanisms v Linkages v Flexure mechanisms 5

CH. 1 - Introduction to Machine Mechanism Elements THANK YOU ANY QUESTIONS ? ? 6