Engineering Graphics with AutoCAD 2023

Chapter 13

Gears, Bearings, and Cams

13-1 Introduction

This chapter explains how to draw and design with gears and bearings. The chapter does not discuss how to design specific gears and bearings; instead, it covers how to design by using existing parts selected from manufacturers’ catalogs. Various gear terms are defined, and design applications are demonstrated.

This chapter also discusses how to design and draw a cam according to a displacement diagram. Different types of follower motion are explained, as are different types of followers.

13-2 Types of Gears

There are many types of gears, including spur, bevel, worm, helical, and rack gears (Figure 13-1). Each type has its own terminology, drawing requirements, and design considerations. ...