Page 107 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

EXERCISE 71 & 72 : Make male & female open fitting with
an accuracy ± 0.05mm

Objectives

At the end of this exercise you shall be able to
• build up different angle using angle gauge
• measure angle of a different components using bevel protractor.

Job Sequence

TASK 1: Male part

• Check the raw material for its size.
• File and finish to size 50 x 48 x 9 mm maintaining parallelism and perpendicularity.
• Apply marking media ,mark as per job drawing and punch witness marks in part A as shown in Fig 1.
• Drill relief hole f 3mm as per job drawing in part A.

• Mark lines as shown in Fig 2 leaving the metal 1mm away from the object line and cut and remove the excess
metal by hack sawing.
• File part A as per drawing to size 14mm x 24mm with safe edge file and check the size with vernier caliper.

• Similarly cut and remove the excess metal and file step B to size and shape and check the size with veriner
caliper as shown in Fig 3.

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