Ex 02.pdf - Experiment no 02 Objective To comprehend and...

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Experiment no: 02 Objective: To comprehend and perform the operation of facing, plain turning and step turning on Lathe machine. Apparatus: Lathe Three-jaw chuck Chuck key Vernier caliper Single-point cutting tool Fig 01: Drawing of stock. Material Used: Mild steel rod. Fig 02: Drawing of Finished job. Turning Operation: Turning is the removal of metal from the outer diameter of a rotating cylindrical work piece. Turning is used to reduce the diameter of the work piece, usually to a specified dimension, and to produce a smooth finish on the metal. 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 tool post. 3. Switch on the lathe and move the carriage near to the workpiece. Give it a small cross feed, and then move carriage longitudinally to the required length slowly.