An introduction to Mechanical workshop how to make a workpiece a brief drilling Operation

2. MECHANICALWORKSHOP
GROUP MEMBERS
 AMNA KHAN (ROLL#51)
NOOR FATIMA (ROLL#47)
 AREEJ MALIK (ROLL#43)
HADIA MUNIR (ROLL#36)

3. Introduction to workshop Tool
Peen hammer Wire cutter Wrench/Spanner
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4. Screw driver Magnifying glass Plier
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5. Drill machine Hacksaw Bench vise
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6. Files Center punch Chisels
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7. Try square Scriber Odd leg caliper
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8. Metal Cutting Workpiece
Apparatus
Procedure
Precautions
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9. Apparatus
• Odd leg caliper
• Hacksaw
• Scriber
• Try square
• Rough file
• Smooth file
• Center punch
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10. Step 1
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11. Step 2
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12. Step 3
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13. Step 4
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14. Step 5
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15. Step 6
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16. Required Shape
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17. Precautions
• Don't grasp metal pieces tightly. A light grip will prevent cuts and slices.
• Never run your fingers along the raw edge.
• Don't rush yourself. Take your time and you'll be less likely to injure yourself.
• Work with adequate light. If possible, use both natural and artificial light.
Metal shines, which makes it difficult to see clearly under certain lighting
conditions.
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18. Drilling Operation
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19. • Drilling is a metal cutting process carried out by a rotating cutting tool to
make circular holes in solid material.
• Tool which makes holes is called Drill Bit or Twist Drill.
Introduction
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20. Drilling Machine
→ A power operated machine tool which holds the drill in it's spindle rotating
at high speed and when actuated move linearly against the work piece
produces a hole.
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21. Types of Drilling Machine
• Portable Drilling Machine
• Bench Drilling Machine
• Radial Drilling Machine
• Pillar Drilling Machine
• Gang Drilling Machine
• Multiple Drilling Machine
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22. Bench Drilling Machine
• These are light duty machine used in small workshops
• Also called Sensitive Drilling Machine because of its accurate and well
balanced spindle.
• Holes of diameter 1mm to 15mm.
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23. Parts
• Vertical column
• Base
• Moving drill head
• Work Table
• Electric Motor
• Variable speed gear box and spindle feed mechanism.
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24. Working
• Work piece with the exact location marked on it with the center punch is
clamped rigidly on the work table.
• Spindle axis and center punch indention are in same line.
• Machine is started and drill bit is lowered by rotating feed handle.
• Drill bit touches the work and start removing materials.
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25. Precautions
• Do not support the workplaces by hand. Use a holding device to prevent the
workpiece from being tom from the operator's hand.
• Never make any adjustments while the machine is operating.
• Never clean away chips with your hand. Use a brush.
• Keep all loose clothing away from turning tools.
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THANK YOU!