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TAPER TURNING

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Ex. No :                                                                                                  Date :

TAPER TURNING USING COMPOUND REST

Aim

To get a required shape and size from a given workpiece by taper turning operations in the lathe.

Material used

Mild steel rod..

Tools required

  1. Single point cutting tool
  2. Lathe
  3. Vernier caliper
  4. Try square
  5. Chuck key

Procedure

  1. First loosen the jaw in the chuck key to position the work piece, and then tighten the jaws.
  2. Fix the cutting tool in the toolpost.
  3. Switch on the lathe and move the carriage near to the orkpiece. Give it a small cross feed, and then move carriage ongitudinally to the required length slowly.
  4. Bring the carriage to the original position, give a small cross feed and move carriage longitudinally. Repeat this step until required diameter is obtained.
  5. To get smooth surface give a very small feed when the diameter is nearing the required value.
  6. To face the end surface of the workpiece, move the carriage to make the tool touch the end surface of the work piece.
  7. Then the taper turning operation is done on the workpiece according to the taper angle calculated. The compound rest base is swirled and set a calculated taper angle, for this the tool is moved by 45_ to the lathe axis.
  8. The workpiece is removed from the chuck and the dimensions of workpiece are checked for the requirements.


Result
               Thus the required shape and size is obtained by taper turning operation.
Questions
1. What are the types of Taper Turning.
2. Name the tool material.
3. What are the different lathe operations.
4. Name the different work holding mechanisms.
5. What is turret and capstan lathe?
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