Design is about to represent your ideas and creative thinking in physical way. Means your are giving the shape and size of your ideas from your mind to the real world. Design needs lot of research, technical ability and creative thinking. Only those designers who have personal qualities of a sufficiently high order can take up the work of a new design. The designs, depending upon the methods used, may be classified as follows (1)Rational design- This type of design depends upon mathematical formula of principle of mechanics. (2)Empirical design- This type of design depends upon empirical formula based on the practice and past experience. (3)Industrial design- This type of design depends upon the production aspects to manufacture any machine component in the industry. (4)Optimum design- It is the best design for the given objective function under the specified constraints. It may be achieved by minimizing the undesirable effects. (5)System design- It is