Stimulation And Test Analysis Of Camshaft's Processing Burr

The burrs which formed during the process of machining will directly affect the size precision, geometrical accuracy and surface roughness of the workpiece, and make assembly difficult, even cause the serious quality problem. In addition, the hardening and shedding of the burrs usually lead to sub atomic crack, which may also reduce service life of the product, or even lead to failure of its operation, which will endanger the safety of operators and equipments. The camshaft is one of the key parts of diesel engine, the problem of cutting burrs is rather a difficult issue during the process of manufacturing. So it is very essential to research the cutting burr formation mechanism.The machining burr formation mechanism of cam will be studied in this paper through application of the theory of existing turning and milling burr formation mechanism. Taking the cam as the research subject, a finite element model of milling processing was established. on the basis of Defrom-3D Software to simulate the milling machining process and optimize the parameter, considering the affection of the burrs due to three factors, such as the cutting speed, cutting depth and feed rate. The research indicates:(1) burr thickness, height and maximum cutting force increases as the cutting speed decreases.(2) burr thickness and the maximum cutting force will increase with the cutting depth increasing.(3) burr thickness, height and maximum cutting force will increase with the single-tooth feed rate increasing. Therefore, the formation of burrs can be suppressed by increasing the cutting speed, reducing the cutting depth and single-tooth feed rate. The conclusion of this research is very helpful for solving the problem of burrs during the machining of the camshaft.