Machine tools

1. MACHINE TOOLS
BY
Prof. Shekhar S. Babar
MECHANICAL ENGINEERING DEPARTMENT
ICEM

2. MACHINE TOOL
Machines used for carrying out metal cutting
operations or finishing operations to impart the
desired shape
Power driven machine
Functions –to hold, support , guide, work piece
& tool
To give motion to w/p & tool with desired speed

3. CLASSIFICATION
•Purpose-1. Single 2.Multi 3. Special
•Size of chip formation
Large chip size
Lathe , drilling , Milling, shaping
Small chip size
Grinding, Lapping, Polishing, Honing

4. LATHE
FIRST machine tool for metal cutting
Egypt
Jan verbruggen-1772-U.K.
Henry mandslay-1783
Lathe is a machine, which removes the
metal from a piece of work to the
required shape & size

5. LATHE

6. BASIC ELEMENTS OF LATHE
BED
HEAD STOCK
TAIL STOCK
CARRIAGE
SADDLE
CROSS SLIDE, COMPOUND REST, TOOL POST,
APRON
FEED MECHANISM

7. LATHE

8. LATHE

9. LATHE OPERATION
•Turning:producestraight,conical,curved,orgrooved
workpieces
Facing:toproduceaflatsurfaceattheendofthepart
orformakingfacegrooves.
Boring:toenlargeaholeorcylindricalcavitymadeby
apreviousprocessortoproducecircularinternal
grooves.
Drilling:toproduceaholebyfixingadrillinthe
tailstock
Threading:toproduceexternalorinternalthreads
Knurling:toproducearegularlyshapedroughnesson
cylindricalsurfaces

10. LATHE OPERATION

11. FACING & TURNING

12. STEP TURNING

13. TAPER TURNING

14. DRILLING

15. DRILLING

16. BORING

17. KNURLING

18. THREADING

19. GROOVING

20. PARTING OFF

21. CHAMFER