Page 80 - CITS - Fitter Trade Practical - Volume -2
P. 80

FITTER - CITS
           Use simple jigs and fixtures for drilling


           Objectives : At the end of this exercise you shall be able to
           •  locate the work piece in a jig
           •  drill the hole on MS Channel
           •  check for the accuracy.

           Job Sequence

           Plate jig - trial
           •  Use previous Ex.No. 4.1.159 drill jig.
           •  Remove the top plate from the plate jig.

           •  Locate component between the hook bolt and touch with stopper pin.
           •  Clamp the top plate with the knobs.
           •  Drill dia 6 x 4 Nos.
           •  Remove the top plate.

           •  Take out the component from the jig.
           •  Check the component with a vernier caliper.



















           Lap flat surfaces using lapping plate

           Objectives : At the end of this exercise you shall be able to
           •   lap the surface using lapping plate
           •   smear the lapping medium
           •   check the surface quality with surface roughness standard set.




























                                                           65

                                            CITS : C G & M - Fitter - Exercise 66
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