Introduction to Basic Manufacturing Processes and ... - always yours

19.2.7.1 Pliers
Fitting 393
Pliers are namely ordinary needle nose and special type. Fig 19.52(a) shows a long nose
pliers and Fig. 19.52(b) shows a combination pliers. These are commonly used by fitter and
electrician for holding a variety of jobs.
(a) Long nose pliers.
(b) Combination pliers.
Fig. 19.52 Long nose pliers and combination pliers
19.2.7.2 Screw driver
Screw driver is a screw tightening tool. The most commonly used standard screw driver
with its parts is shown in Fig 19.53. It is generally used by hand for tightening the screws.
It is also of various types depending upon the kind of work.
Length of handle
Length of shank
Ferrule
Handle
Shank
Blade
Fig. 19.53 Standard screw driver with its parts
19.2.7.3 Wrenches
Wrenches are commonly known as spanners. These generally come in sets and are
commonly identified by numbers. These are of various types and few general types involve
open single ended, open double ended, closed ended adjustable, ring spanner, offset socket,
t-socket, box wrench, pipe wrench and Allen wrench.
19.3 OPERATIONS PERFORMED IN FITTING WORK
The operations commonly performed in bench and fitting work may be classified as
under.
1. Marking 2. Chipping
3. Filing 4. Scrapping
5. Sawing 6. Drilling
7. Reaming 8. Tapping
9. Grinding and 10. Polishing
Some common operations are discussed as under.
Point