1. ALPHA COLLEGE OF ENGG. AND TECH.
GRINDING MACHINE
ALPHA COLLEGE OF ENGG. AND TECH.

2. Group 130510119129 Patel Hardik V. 130510119130 Patel Hardik B.
Patel Harsh B.
Patel Harsh K.
Patel Harsh V.

3. GRINDING MACHINE
Grinding machine is a power operated machine tool where, the work piece is fed against constantly rotating abrasive wheel to remove thin layer of material from work.

4. Principle of grinding machines
Work piece is fed against the rotating abrasive wheel.
Due to action of rubbing or friction between the abrasive particles and work piece material is removed.

5. Types of Grinding Machine
Belt grinder
Bench grinder
Cylindrical grinder
Surface grinder

6. Classification of grinding machine
Bench grinding machine
Surface grinding machine
Cylindrical grinding machine
Center less grinding machine
Internal grinding machine
Special purpose grinding machine

7. Bench grinder Two wheels of different grain sizes for roughing and
finishing operations and is secured to a workbench.

8. Cylindrical grinder

9. Cylindrical grinder It is a process of grinding curved surfaces.
Surface may be straight or tapered.
Work piece is mounted on two centers, one is tailstock centre and the other is headstock center.
Head stock center may or may not revolve.

10. Surface grinder

11. Centre less grinding machine
It is used to grind curved surface work piece which are long and slender.
Work piece rests on a work-rest blade and is backed by a second wheel called as regulating wheel.
Grinding wheel pushes the work piece down the work-rest blade against the regulating wheel.

12. USES OF GRINDING MACHINE
It is used for flat ,conical and cylindrical surfaces.
finishing internal cylinders or bores.
forming and sharpening cutting tools.
snagging or removing rough projections from castings and stampings.

13. Advantages Work is supported rigidly. Productivity is high.
Less skill is needed.
No chatter or deflection of work.

14. Disadvantages Work with several diameters cannot be handled well.
More time is involved in change over of Centre less grinder.

15. Thank You