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Unit 5

Unit 5. Lathe and drilling machine. Introduction . Manufacturing process material removal – removal of extra material. assembling – joining of two components. Material removal can be in small scale or large scale small scale – fitting, craftwork etc large scale – industrial products.

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Unit 5

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  1. Unit 5 Lathe and drilling machine

  2. Introduction • Manufacturing process • material removal – removal of extra material. • assembling – joining of two components. • Material removal can be in small scale or large scale small scale – fitting, craftwork etc large scale – industrial products.

  3. Tool is a device used for material removal.

  4. Hand tools • Manual work involved. • Fitting tools • Hacksaw • Files • Chisels • craft tools • Scissors • blade • Machine tools • Work is done by machines. • Lathe • Drilling • Tapping • Planning • Milling • Grinding

  5. Lathe • A lathe is a machine tool generally used to produce circular objects where a cutting tool is fed against the rotating work piece to remove excess material.

  6. classification • Engine lathe. • Speed lathe. • Production lathe (Turret & capstan). • Automatic lathe. • CNC lathe.

  7. Principle of work • Turning machine works on principle that a cutting tool can remove material in the form of chips from rotating workpieces to produce circular object.

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