1. Lathe and drilling machine
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.
Tools
Machine tools
Hand tools

4. Work is done by machines. Lathe Drilling Tapping Planning Milling
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.