Page 155 - Turner 1st sem Practicals

Production & Manufacturing Exercise 1.3.43
Turner - Turning

Turning between centres on mandrel (Gear blank)
Objectives : At the end of this exercise you shall be able to
• mount the work on mandrel
• turn the gear blank.

Job sequence

• Check the size of the raw material. • Mark and punch the thickness to 20 mm.
• Hold, true and face one end of the job. • Reverse, refix and face up to the mark.

• Drill and bore 26.98mm to fine finish. • Fix the job on the mandrel.
• Ream the drilled hole to 27H7. • Hold the job on the mandrel the size using an
outside micrometer 75-100 mm range.
• Measure the bore size using an inside micrometer.

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