Machine Drawing

Jigs and Fixtures 207

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d:\N-Design\Des14-1.pm5

Pipe fabrication

Locator for

channel

Removable

location pins

Locator for gusset

Strap clamps

Pipe supportand locators

Fixed location pins

Fig. 14.9 Welding fixture

THEORY QUESTIONS

14.1 What is a jig?

14.2 What is a fixture?

14.3 What are the applications of jigs and fixtures?

14.4 How is the work piece represented in a jig or fixture drawing?

14.5 List the various jig components and their uses.

14.6 List different types of jigs and sketch the following :

(a) turn over jig, and

(b) leaf jig.

14.7 With the help of sketches, describe the different types of bushes.

14.8 What is bush clearance and what is its importance?

14.9 List various fixture components and their uses.

14.10 Name the different types of fixtures.