1. MACHINE TOOL Prof. kiran gore

2. Contents  Lathe machine  Drilling machine  Grinding machine

3. Grinding machine

4.  Grinding is the process of removing material by abrasive action of revolving wheel on the surface of work piece.  During grinding process material removed in the form of chips.  Grinding is considered as finishing operation because very small amount of material removed from the surface of the work piece.

5. Grinding wheel The wheel used for performing the grinding operation is called grinding wheel

6. Types of grinding operations 1. Rough grinding 2. Precision grinding

7. Rough grinding  In rough grinding the grinding wheel are used 1. For removing the excess material from casting, forging & weld materials 2. For removing the sharp corners, burrs or other unwanted projections from the work piece.  Rough grinding does not give good surface finish & high dimensional accuracy

8. Precision grinding Precision grinding is used for imparting the good surface finish & high dimensional accuracy to the work piece.

9. Types f grinding machine 1. cylindrical grinding machines 2. Internal grinding machine 3. Surface grinding machine 4. Center less grinding machine

10. cylindrical grinding machines

11. Cylindrical grinding machine

13. Application The cylindrical grinding machine are used for grinding Axle Shafts Spines

14. Internal grinding machine

16. Application The internal grinding machine are used for grinding Bores of gears Inner surface of ball bearing Bores of cylinders

17. Surface grinding machine Surface grinding is the process of grinding flat surface of the work piece. Types a.Horizontal spindle surface grinding machine b.Vertical spindle surface grinding machine

18. a. Horizontal spindle surface grinding machine

21. Horizontal spindle surface grinding machine

22. b.Vertical spindle surface grinding machine

23. Vertical spindle surface grinding machine

24. Center less grinding machine

25. Center less grinding is a method of grinding cylindrical & tapered surface on a work piece that are not held & rotated between centers or in chuck. Center less grinding machine

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