The principles of designing machine elements design is the art of planning or devising new or improved Machine machines to accomplish specific purposes. In general, a machine will consist of a combination of several different mechanical elements properly designed and arranged to work together, as a whole. During the initial planning of a machine, critical decisions must be made concerning loading, type of kinematic elements to be used, and correct utilization of the properties of engineering materials. Economic considerations are usually of prime importance when the design of new machinery is undertaken.In general, the lowest over-all costs are designed. Consideration should be given not only to the cost of design, manufacture the necessary safety features and be of external pleasing appearance.
The objective is to produce a machine which is not only sufficiently rugged to function properly for a reasonable life, but is at thesame time cheap enough to be economically feasible. The engineer in charge of the design of a machine should not only have adequate technical training, but must be a man of sound judgment and wide experience, qualities which are usual acquired only after considerable time has been spent in current professional work. Design of machine elements The principles of design are, of course, universal. The same theory or equations may be applied to a very small part, as in an instrument, or, to a larger but similar part used in a piece of heavy equipment. In no ease, however, should mathematical calculations be looked upon as absolute and final. They are all subject to the accuracy of the various assumptions, which must necessarily be made in engineering work.
Sometimes only a portion of the total number of parts in a machine are designed on the basis of analytic calculations. The form and size of the remaining parts are designed on the basis of calculations. On the other hand, if the machine is very expensive, or if weight is a factor, as in airplanes, design computations may then be made for almost all the parts. The purpose of the design calculations is, of course, to attempt to predict the stress or deformation in the part in order that carry the loads, which will be imposed on it, and that it may last for the expzcted life of the machine. All calculations are, of course, dependent an the plhysicai properties of the construction materials as determined by laboratory tests. A rational metlead of design attempts totake the results of relatively wimple and fundamental tests. Do ademas, it read btcn amply proved that such details? surface condition, fillets, notches, manufacturing tolerances, and and useful life of a machine part-The design and drafting departments must completely all such individuals, must specify cvmpleteiy alt such individuals, and thus exercise the necessary close control aver the finished product. We provide Professional technology, excellent product quality and intimate after-sales service when you purchase Drum dryer, Dryer machine, from our company.As a professional mining machinery exporter, we will win your trust with our delivery speed, Enterprises Credit and product quality.