Page 84 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

Job Sequence
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 60º with the template / gauge available.

• 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 the excess metal from the other side of Vee.
• File and Finish the Vee to the centre line.
• Check the 60° & 45° with a Vernier bevel protractor and file

• Finish all the edges.

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.
• File and finish the external and internal 60 angles and check with Vernier bevel protractor.

• Check radius with gauge and finish.
• File and finish thickness to 3mm by fixing work with wooden block.

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CITS : CG & M - Fitter - Exercise 24