The Research Of The Applied Technology In The Engine Crankshaft Manufacturing Field

The crankshaft is one of the most important parts in the engine; the function is to export the power coming from the burning of the fuel in the cylinders in rotation. Due to the complex construction and bad working condition of the crankshaft, as well as the important position in the engine, the crankshaft requires high technology in manufacturing. Normally the cost of the crankshaft nearly shares the 10% cost of the engine. So the research in the crankshaft field can help to reduce the cost in machining and improve the quality of the crankshaft.Some unclear issues in the manufacturing field of crankshaft will be depicted as emphases, such as the choice between geometrical centre and mass centre, the roughness evaluation for journals with the nordule iron material, the choice between the turn-turnbroaching and external milling. And also a case of crankshaft manufacturing development is introduced to show the normal steps and important items, this case will be a good example to the crankshaft manufacturing development.