Page 90 - CITS - Fitter Trade Practical - Volume -2
P. 90

FITTER - CITS
           Job Sequence


           TASK 1: Angle gauge

           •   Check the raw material for its size
           •   File and finish the plate to size 60  x  20 x  3.8mm (0.4mm thick for grinding allowance
           •   Mark centre lines for the 60° external  Vee and relief grooves.
           •   Mark centres for 2 mm relief hacksawing.
           •   Cut off excess metal with a hacksaw from the plate, for the two ‘V’ grooves.
           •   Ensure that punch marks are visible and sufficient metal is left for finish filing

           •   File and finish the sides of the groove with a knife edge file
           •   Ensure that the width of the remaining metal on both sides of the ‘V’ grooves end is equal.
           •   Check the accuracy of the 60°  angle with the template / gauge supplied.
           •   Repeat the steps for the ‘V’ groove.

           •   Cut off excess metal from the plate for external ‘Vee’ on one side.
           •   File and finish the side of the ‘VEE’ correct to the centre line.
           •   Cut off excess metal from the other side of ‘Vee’
           •   File and finish the ‘Vee’ to the centre line
           •   Check the 60° & 45° angle with a vernier bevel protractor file, and finish all the edges.

           •   Remove burrs and check the dimensions.


           TASK 2: Template of different profiles
           •   Check the raw material for it s size
           •   Remove burrs and check the raw material size.
           •   File the large surface with a 200mm flat second cut file (Hold the sheet on the wooden block)

           •   File two adjacent sides - flat and square.
           •   Make relief hole by drilling as per drawing.
           •   Mark dimensions as per drawing.
           •   Hacksawing and remove the excess material.
           •   File and finish the remaining surfaces (60mm) to size and check the size.
           •   File and finish external and internal 60° angles and radius check with vernier bevel protractor and gauge.

           •   File and finish thickness to 3 mm, by fixing work on the wooden block.
              Care should be taken to maintain the correct lengthThe wringing of the angle gauges should be
              carried.




















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                                            CITS : C G & M - Fitter - Exercise 67
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