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Machining on Lathe

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Machining on Lathe
Photo by Sven Daniel / Unsplash

Lathe Booking Time: 3 Hrs

Max CMF Points Earned: 350

Lathe Machine

Learn a basic introduction to the Lathe Machine before performing any operation.

Motor Coupler Shaft

This is a Mild Steel Shaft for a Robot Wheel. It is used with Bearing Housing for smooth power transmission between the motor and the HD wheel of your robot.

Motor Couple Shaft

Download Part Drawing

Coupler shaft
Coupler shaft.pdf
486 KB
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General Safety & Precautions

  • Always wear safety goggles and a face shield while operating the lathe.
  • Tie back long hair and avoid loose clothing or jewelry.
  • Ensure the workpiece is tightly secured in the chuck before starting.
  • Verify the tool is properly aligned and tightly clamped.
  • Never leave the machine running unattended.
  • Keep hands away from the rotating chuck and tools during operation.
  • Use the correct cutting speed, feed rate, and depth of cut to avoid tool breakage or accidents.
  • Clean chips with a brush or hook — never with hands.
  • Always stop the machine before making measurements or adjustments.

Process Sheet

Step-0: Material Required

  • Workpiece: Mild Steel Cylindrical Rod – dia. 20 mm, length 150 mm
  • Tools Required:
    • Single Point Cutting Tool (HSS/Carbide insert)
    • Grooving Tool
    • M8 Threading Die

Step-1: Machine and Workpiece Setup

  • Operation: Mount and center the workpiece on the lathe
  • Machine/Tool Required: Lathe
  • Operation Time: 15 minutes

Step-2: Facing the Stock Piece

  • Operation: Face the end surface of the rod
  • Machine/Tool Required: Lathe / Single Point Cutting Tool
  • Operation Time: 10 minutes

Step-3: Straight Turning – dia. 20 mm to dia. 15 mm

  • Operation: Reduce diameter from dia. 20 mm to dia. 15 mm
  • Machine/Tool Required: Lathe / Single Point Cutting Tool
  • Operation Time: 30 minutes

Step-4: Straight Turning – dia. 15 mm to dia. 8 mm

  • Length: 0 mm to 20 mm
  • Machine/Tool Required: Lathe / Single Point Cutting Tool
  • Operation Time: 20 minutes

Step-5: Straight Turning – dia. 15 mm to dia. 12 mm

  • Length: 20 mm to 48 mm
  • Machine/Tool Required: Lathe / Single Point Cutting Tool
  • Operation Time: 15 minutes

Step-6: Groove Cutting – dia. 12 mm to dia. 9 mm

  • Length: 21.5 mm to 23 mm
  • Machine/Tool Required: Lathe / Grooving Tool
  • Operation Time: 15 minutes

Step-7: Straight Turning – dia. 15 mm to dia. 11 mm

  • Length: 68 mm to 94 mm
  • Machine/Tool Required: Lathe / Single Point Cutting Tool
  • Operation Time: 15 minutes

Step-8: Straight Turning – dia. 15 mm to dia. 8 mm (approx.)

  • Length: 94 mm to 110 mm
  • Machine/Tool Required: Lathe / Single Point Cutting Tool
  • Operation Time: 30 minutes

Step-9: Threading – M8 External Threads

  • Operation: Cut M8 threads
  • Machine/Tool Required: Lathe / M8 Threading Die
  • Operation Time: 20 minutes

Learning Outcomes

  • Proper use of marking and hand tools
  • Workpiece alignment
  • How the feed and depth of cut are provided
  • Facing
  • Turning
  • Step turning
  • Grooving
  • Threading