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Views of Objects. GOALS: After this chapter you should be able to: Explain different views of an object Explain how an object can be revolved to illustrate different views. Explain how the idea of a “glass box” can be used to explain views.
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GOALS: After this chapter you should be able to: • Explain different views of an object • Explain how an object can be revolved to illustrate different views. • Explain how the idea of a “glass box” can be used to explain views. • Be able to identify the necessary views of a given object that is to be drawn. • Identify typical objects that usually require only two views. • Be able to sketch three or more views • Be able to place the views correctly on the page.
Every Object is subject to laws of nature. • We live in a three dimensional world. • Therefore there are three essential dimensions that must be represented in a mechanical drawing: • Width • Height • Depth
The front view shows what two dimensions? • Width and height • The right side view shows what two dimensions? • Height and Depth • The top shows what two dimensions? • Width and the depth
Refer to figure 7-5 in your text. The Glass Box. • Hidden Lines: Used to show hidden parts (edges). Drawn with a dashed (hidden) line. The edge would not be visible in the right side view so we use a hidden line to show it is there.
The Right Side, Front and Top views are known as “the Three Standard Views.” • In circular drawings we use center lines to indicate roundness. • Sometimes only two views are required.
One of the worst things you can do is draw a view out of place. • Always use this orientation: TOP FRONT RIGHT SIDE
Line up your views. • Use construction lines for measuring. • Use a 45 degree angle to project measurements from top to right side view.