Page 86 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

Fig 15

Fig 16

Boring jigs are used to bore holes which are either too large to drill or of odd size. (Fig 17)

Fig 17

Constructional features of drill jig
Objectives : At the end of this exercise you shall be able to
• list the different parts of a drill jig and also their uses
• state the different types of drill bushes and their uses
• state the different types of locators and clamps used in jigs.

The basic features of a drill jig are (Fig 1)
- base plate or jig body
- drill plate or jig plate

- drill bushes locating pins
- clamps.

71

CITS : C G & M - Fitter - Exercise 66