Grinding is a process that uses abrasive wheels to remove material from a workpiece. It provides a good surface finish with less wheel wear and avoids grinding cracks or burns. The grinding machine consists of a powered grinding wheel and a fixture to hold the workpiece while coolant cools it. There are several types of grinders including belt grinders for various applications, bench grinders with two wheels, and cylindrical and surface grinders. Grinding is used for finishing flat, cylindrical, and conical surfaces, boring cylinders, sharpening tools, and removing projections from castings. It supports work rigidly and provides high productivity with less needed skill and no deflection. However, it has trouble with varying diameters and

2. Grinding is the process of removing metal
by the application of abrasives which are
bonded to form a rotating wheel.
It is used for good surface
Finishing, less grinding wheel wear, free
of grinding cracks and burns.
PRINCIPLE

4. CONSTRUCTION
 The grinding machine consists of a power driven
grinding wheel spinning at the required speed and
a bed with a fixture to guide and hold the work-
piece.
 coolant is placed to cool the work piece so that it
does not overheat and go outside its tolerance.

5. Types of grinders
Belt grinder:
 It is suitable for all kind of applications like finishing,
deburring and stock removal.

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

7. Cylindrical grinder

8. Surface grinder

9. 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;

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

11. Disadvantages:
 Work with several diameters cannot be
handled well.
 More time is involved in change over of
centreless grinder.