Grinding Machines or Grinders are tools which are used for grinding work pieces. It produces a smooth finish on flat surface. A grinding wheel is used in grinding machines for cutting.
Grinding wheel is coated with abrasive material . Each grain of abrasive materials cut a small piece of workpiece via shear deformation.There are different types of grinding machines based on purposes.
Some of the most commonly used grinding machines are :-
- Surface Grinding Machine
- Bench Grinding Machine
- Cylindrical Grinding Machine
The most commonly used among the three is Surface Grinding Machine. Now lets see different parts of Surface Grinding Machine and their function .
Main parts of Grinding Machines are :-
1)Base. 2)Table. 3)Column. 4)Abrasive Wheel. 5)Wheel Guard. 6)Abrasive Wheel Head.7)Three types of traversing wheels. 8)Coolant Supply Nozzle.
Functions of the above stated parts of grinding machine are stated below :-
1) Base :-
The base is bottom most part of the grinding machine. It is generally made of cast iron. It provides support to rest part of the grinding machine.
2) Table :-
The table is rested on the base. This is the place where the workpiece is kept and held properly to grind. It can move left and right horizontally using a traversing wheel known as Hand Traversing Wheel.
3) Column :-
It is a vertical column where abrassive wheel, wheel head and wheel guard are mounted.
4) Abrasive wheel :-
This is the main wheel which rotates and remove materials from the surface of the workpiece and make it smooth. This wheel is coated with abrasives and thereby can remove materials from workpiece surface easily.
5) Wheel guard :-
It is the cover of the abrasive wheel or grinding wheel which protect the worker fro any type of accident.
6) Wheel Head :-
It is the compartment that is moved vertically up or down using a traversing wheel called Vertical Feed Hand Wheel . We move this wheel head so that the grinding wheel can touch the workpiece.
7) Three types of traversing wheel :-
i) Hand Traversing Wheel :- This traversing wheel is used to move the table is horizontally left and right to adjust the workpiece with the grinding wheel.
ii) Cross Side Hand Wheel:- This traversing wheel is used to move the work table in forward and backward direction in order to make a contact between workpiece and grinding wheel.
iii) Vertical Feed Hand Wheel :- This traversing wheel is used to move the wheel head in vertical up and down direction.
This three wheels are used to adjust the positions of workpiece and grinding wheel so that these two make contact with each other.
8) Coolant Supply Nozzle :-
The coolant supply nozzle is the used to insert nozzle in the grinding machine which cools the work region so that the heat is not dissipated into the workpiece and abrasive wheel.