Skip to main content

DRILLING REAMING AND TAPPING - 08


AIM:

DRILLING, REAMING & TAPPING

TOOLS REQUIRED

1. TRY SQUARE & TAP WRENCH
2. 12" BASTARD FLAT & 6" SMOOTH FLAT FILES
3. COUNTER SUNK
4. CENTER PUNCH & HAMMER
5. TAP SET :- M6 AND M10
6. DRILL BITS :- 9.4mm, 4.2mm & 6mm.
7. REAMER :- 9.6mm, 4.7mm &10mm.

MATERIALS REQUIRED

1. 100 x 50 x 12 M.S FLAT
2. MARKING BLUE
3. OIL
4. CLEANING BRUSH
5. COTTON WASTE

PROCEDURE

1. FILE THE WORK PIECE INTO THE RECTANGULAR SHAPE OF 100mm LENGTH AND 45mm HEIGHT. ENSURE THAT ALL ADJACENT SIDES ARE MUTUALLY PERPENDICULAR TO EACH OTHER.

2. THEN MARK THE WORK PIECE AS PER THE GIVEN DRAWING BY USING A VERNIER HEIGHT GAUGE.

3. AFTER MARKING PUNCH ALL CENTER POINTS FOR DRILLING BY USING A CENTER PUNCH AND HAMMER.

4. DRILL THE WORK PIECE AS PER THE DRAWING BY USING 9.4mm, 4.2mm & 6mm. DRILL BITS. APPLY THE COOLANT WHILE DRILLING. 

5. THEN REAM THE DRILLED HOLES FOR BETTER FINISHING BY USING 9.6mm, 4.7mm &10mm REAMERS. APPLY OIL WHILE REAMING. AFTER REAMING CHAMFER ALL HOLES BY USING A COUNTER SUNK. IT HELPS TO EASE ENTERING OF TAP IN TO THE HOLES.

6. AFTER REAMING, TAP THE 4.7mm HOLE WITH M6 TAP AND 9.6mm HOLE WITH M10 TAP SET. ALSO APPLY THE OIL WHILE TAPPING FOR BETTER STRENGTH AND FINISH OF THREADS.


RESULT

DRILLING, REAMING AND TAPPING ARE SUCCESSFULLY DONE  BY PROPER METHOD.
Labels:

Popular posts from this blog

HEAD LIGHT CIRCUIT - WITHOUT RELAY

  AIM: HEAD LIGHT CIRCUIT WITHOUT RELAY TOOLS & MATERIALS REQUIRED: 1. Screw driver 2. Combination plier 3. Wire striper 4. Copper leg 5. Insulation tape 6. Head light switch 7. Dipper switch 8. Battery clips 9. Battery -12v 10. Head lamp - 12v DIAGRAM PROCEDURE: 1. ബാറ്ററിയിൽ നിന്നുള്ള +ve terminal head light സ്വിച്ചിലേക്ക് fuse വഴി connect ചെയ്യുക. 2. Head light switch ൽ നിന്നുള്ള out, dipper switch ന്റെ center point ലേക്ക് connect ചെയ്യുക. 3. Dipper switch ൽ നിന്നുള്ള dim, bright വയറുകൾ head lamp ലെ low, high beam വയറുമായി യഥാക്രമം connect ചെയ്യുക. 4. Head lamp ൽ നിന്നുള്ള -ve വയർ, ബാറ്ററിയുടെ -ve terminal ലുമായി connect ചെയ്യുക. RESULT : Head light circuit - without relay വിജയകരമായി പൂർത്തീകരിച്ചു
Read more

FOUR STROKE SPARK IGNITION (PETROL) ENGINE

FOUR STROKE PETROL ENGINE MAIN PARTS 1. PISTON 2. CYLINDER 3. CONNECTING ROD 4. INLET VALVE 5. EXHAUST VALVE 6. SPARK PLUG 7. CRANK SHAFT 8. FLY WHEEL 9. CAM SHAFT CONSTRUCTION A four stroke petrol engine have a piston, connecting rod, crank shaft, inlet valve, exhaust valve and a spark plug. The connecting rod is used to connect the piston and crank shaft. The spark plug and valves are mounted in the cylinder head. Also the valves are operated by cam shaft which is connected to the crank. In this type of engines, there would be a power stroke for every two rotations of crank shaft. It is also known as otto cycle. Each full rotation of crank having two strokes. So one stroke is  180° rotation of flywheel. A four stroke petrol engine having the following strokes. WORKING Induction stroke : The crankshaft moves the piston downwards (TDC to BDC). The inlet valve is open and a mixture of fuel and air is sucked into the combustion chamber. It is also known suction stroke. In this strok...
Read more

CENTRIFUGAL CLUTCH

MAIN PARTS 1. Fly wheel 2. Clutch plate 3. Clutch shaft 4. Pressure plate 5. Clutch spring 6. Bell crank lever 7. Centrifugal weight 8. Crank shaft CONSTRUCTION In this type of clutch, centrifugal force is used to keep the clutch in the engaged position. It is operated automatically depending upon the engine speed. It has a fly wheel, clutch shaft, clutch plate, pressure plate, bell crank lever and a centrifugal weight. The bell crank lever is fitted in to the pressure plate with the help of a lever is called bell crank lever. WORKING A simple diagram of a centrifugal clutch is shown in the above figure. When the engine speed increases, the centrifugal weight (A) fly off due to the centrifugal force. At the same time bell crank lever (B) presses the pressure plate(C) and the clutch plate (D) on the flywheel against the springs(G). This makes the clutch engaged. The torsion of spring (G) is designed for disengage the clutch below 500 r.p.m. So the power can't be transmit...
Read more