Page 20 - Fitter 1st Year - TP - Hindi
P. 20

MeasuringInstrument  68.Form internal threads  with  taps  to  their uses, determining hole size (or
                       -  Vernier,  Screw   standard size (through holes and blind  reaming), Reaming procedure.
                       Gauge,Micrometer]    holes). (3 hrs.)                  Screw threads: terminology, parts,
                       CSC/N0304         69.Prepare studs and bolt. (13 hrs.)  types and their uses. Screw pitch
                                                                              gauge:  material  parts  and  uses.
                                                                              Taps  British  standard  (B.S.W.,
                                                                              B.S.F., B.A. & B.S.P.) and metric /
                                                                              BIS (coarse and fine) material, parts
                                                                              (shank body,  flute,  cutting edge).
                                                                              (03 hrs.)


                                         70.Form  external  threads  with  dies  to Tap wrench: material, parts, types
                                            standard size. (08 hrs.)          (solid &adjustable types) and their
                                                                              uses removal of broken tap, studs
                                         71.Prepare nuts and match with bolts. (15  (tap stud extractor).
                                            hrs.)
                                                                              Dies: British standard, metric and BIS
                                                                              standard,  material,  parts,  types,
                                                                              Method  of  using  dies. Die  stock:
                                                                              material, parts and uses.   (06 hrs.)

                                         72.File and make Step fit, angular fit, angle, Drill troubles: causes and remedy.
                                            surfaces  (Bevel  gauge  accuracy  1 Equality of lips, correct clearance,
                                            degree). (12 hrs.)                dead  centre,  length  of  lips.  Drill
                                                                              kinds: Fraction, metric, letters and
                                         73.Make simple open and sliding fits. (08  numbers, grinding of drill. (04 hrs.)
                                            hrs.)
                                                                              Grinding  wheel: Abrasive,  grade
                                         74.Enlarge hole and increase internal dia.
                                            (2 hrs.)                          structures, bond, specification, use,
                                                                              mounting and dressing. Selection of
                                         75.File cylindrical surfaces. (5 hrs.)  grinding wheels. Bench grinder parts
                                                                              and use. (04 hrs.)
                                         76.Make open fitting of curved profiles.
                                            (15 hrs.)


                                         77.Correction of drill location by binding  Gauges-  Introduction,  necessity,
                                            previously drilled hole. (04 hrs.)  types.  Limit  gauge:  Ring  gauge,
                                                                              snap gauge, plug gauge, description
                                         78.Make inside square fit. (16 hrs.)  and uses.
                                                                              Description and uses of gauge- types
                                                                              (feeler, screw,  pitch,  radius,  wire
                                                                              gauge). (05 hrs.)

         Professional  Make different fit of  79.Make sliding 'T' fit. (21 hrs.)  Interchange  ability:  Necessity  in
         Skill 126Hrs;  components  for                                       Engg, field definition, BIS. Definition,
                       assembling as per                                      types of limit, terminology of limits
         Professional  required tolerance
         Knowledge     observing principle                                    and  fits-basic  size,  actual  size,
         28Hrs                                                                deviation, high and low limit, zero
                       of  interchange                                        line,  tolerance  zone  Different
                       ability  and  check                                    standard systems of fits and limits.
                       for  functionality.                                    British  standard  system,  BIS
                       [Different  Fit  -                                     system. (05 hrs.)
                       Sliding, Angular,
                       Step  fit,  'T'  fit,
                       Square  fit  and
                       Profile fit; Required
                       tolerance:  ±0.04
                       mm,     angular
                       tolerance: 30 min.]
                       CSC/N0304

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