Study On Processing Technology Of Middle Carbon Steel Camshaft

Camshaft is one of the important parts of the valve mechanism of internal combustion engine. Air distribution mechanism is mainly to ensure that the cylinder has a good ventilation effect, and a small change in the ventilation loss, so that the engine's power and economy is good. At the same time, the request itself is reliable, low noise. Among them, the function of the camshaft is to control the opening and closing of the valve. Although in the four stroke engine crankshaft speed is twice the camshaft (in 2 stroke engines, the camshaft and crankshaft speed is the same), but usually it is still very high speed, also need to bear large torque, so on camshaft in terms of strength and support in the design are very high, although the general cam shaft material is special cast iron, but with the development of automobile industry, domestic and international transportation business by leaps and bounds, car of the power demand will continue to increase, diesel engine will be better power to choose, and steel camshaft will have further research and development.The camshaft in the cylinder has three forms:are on the form, and the form of mid three. Located in the cylinder cover of the camshaft is superimposed type gas distribution mechanism, is located in the upper part of the body camshaft is mid type gas distribution mechanism, in crankcase cam shaft is arranged on the form of gas distribution mechanism. Camshaft is a gas distribution mechanism in the important and key parts, which determines the valve lift curve and valve switch time, which directly affects the engine into the exhaust, influence on the engine power, economy and emissions.The camshaft has been attached great importance in the process of product design and parts processing. Part of the production process is reasonable, will be directly related to the production of qualified products. The design of cam shaft power, the engine running comfort and torque output is directly related to. So research on the camshaft can make more reasonable feed, fuel consumption and waste reduction, to obtain a more adequate driving force, and can improve the service life of the camshaft, it has better economic and dynamic.For steel parts camshaft must not only process of machining parts, on the heat treatment process of the camshaft also very high, because the heat treatment research is has a decisive influence on the service life of the cam shaft, this paper actual production, to the service life of the 50# steel material of the cam shaft and reduce the rejection rate, for the production of parts in the machining process technology and heat treatment process of hardness, crack failure forms. From the aspect of technology to investigate and analysis.Ultimately achieve the optimal production and processing technology.