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Crankshaft Machining of the Dynamic Simulation Analysis
Abstract
Crankshaft of CNG compressor has a complicated structure and strict demand for machining precision. It consists of several cranks, and its height is small, which lead to large displacement (due to its poor rigidity) and great difficulty in machining with high precision. The aim of present paper is just to find effective ways to solve these problems. A three-dimensional finite element model of the crankshaft was established, and the cutting process was simulated using Ansys. Cutting tool was simplified into moving load in the simulation. In some parts of the crankshaft with poor rigidity, the displacement was large, thus rigid block was applied to improve the rigid, thereby reducing the displacement and machining error in cutting process. The work provides a theoretical guidance for increasing machining precision and reducing cost.
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