CONDITION FOR CUTTING

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• Q1: State the classification of Machining methods.
  Ans: Machining methods are classified as follows:

  • ➔ Deformation method
  • ➔ Deposition method
  • ➔ Removal method
• Q2: Define the Deformation method.
  Ans: Deformation method involves shaping materials by applying force without removing any material, e.g., forging and rolling.
• Q3: Define the Deposition method.
  Ans: Deposition method involves adding material to create the desired shape, e.g., welding or 3D printing.
• Q4: Define the Removal method.
  Ans: Removal method involves cutting or removing excess material to achieve the desired shape, e.g., turning, milling, or drilling.
• Q5: Define Conventional Machining Method.
  Ans: Conventional machining uses mechanical means like cutting tools to remove material from a workpiece.
• Q6: Define Non-Conventional Machining Method.
  Ans: Non-Conventional machining uses advanced methods like electrical, chemical, or thermal processes to remove material.
• Q7: Define Ultrasonic Machining.
  Ans: Ultrasonic Machining removes material using high-frequency vibrations and abrasive slurry without heat.
• Q8: Define Abrasive Jet Machining.
  Ans: Abrasive Jet Machining removes material by a high-velocity stream of abrasive particles directed at the workpiece.
• Q9: Define Electrical Metal Removal process.
  Ans: Electrical Metal Removal (EMR) uses electrical energy, such as in EDM (Electrical Discharge Machining), to remove material.
• Q10: Define Mechanical Metal Removal process.
  Ans: Mechanical Metal Removal uses mechanical forces like cutting, shearing, or grinding to remove material.
• Q11: Define Thermal Metal Removal process.
  Ans: Thermal Metal Removal uses heat energy to melt or vaporize material, e.g., laser cutting or plasma machining.
• Q12: Define Chemical Metal Removal process.
  Ans: Chemical Metal Removal removes material through chemical reactions, e.g., chemical milling or etching.
• Q13: Define Cutting Feed.
  Ans: Cutting feed is the distance a cutting tool moves for each revolution of the workpiece.
• Q14: Define Spindle Feed.
  Ans: Spindle feed is the speed at which the workpiece rotates, usually measured in revolutions per minute (RPM).
• Q15: Define Finishing Allowance.
  Ans: Finishing allowance is the extra material left on a workpiece to ensure proper finishing during final machining.
• Q16: Name the factors affecting Finishing Allowance.
  Ans: The factors affecting Finishing Allowance are as follows:

  • ➔ Type of material
  • ➔ Accuracy required
  • ➔ Machining method
  • ➔ Surface finish desired
• Q17: Write the formula to convert feed rate per revolution to feed rate per mm.
  Ans: The formula is:

  F = f × N

  where:

  • F = Feed per minute
  • f = Feed per revolution
  • N = RPM (Revolutions per minute)
• Q18: Write the formula to calculate Cutting Power.
  Ans: The formula is:
• Q19: Write the formula to calculate Cutting Speed.
  Ans: The formula is: