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| Analysis and Motion Planning for Multiaxis Machining Process Based on Hierarchical Model |
| (1. College of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China;2. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract
Abstract： For complex surface multi-axis machining process, a complete hierarchical model for multiaxis milling was presented. The geometric model, kinematics model and mechanistic model are integrated to analyse the machining methods. The method selected for geometric stock modeling is the dexel approach. The cutter workpiece engagement defines the instantaneous intersection boundary between the cutting tool and the in-process workpiece. From the CWE, the cutter entry-exit angles and depth of cuts are found and used to calculate the instantaneous cutting forces. The kinematics model also supports the calculation of workpiece updating and cutting force during the multiaxis milling process. The constrained optimization is solved by sequential quadratic programming and the machine operates at threshold levels. The production time in a flank milling propeller was reduced considerably to 20% with the satisfaction of precision demand.
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Received: 17 December 2010
Published: 30 November 2011
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