Optimization Of Process Parameters For Surface Roughness In AA5083 Alloy Machining

With the continuous development of NC technology, multi-axis NC machining of complicated surface parts is becoming increasingly common, impeller machining is one of the most typical example. How to guarantee the machining quality, efficiency and cost of workpiece in batch production are our most concerns. Based on the orthogonal experiment, this paper focus on AA5083 alloy impeller cutting parameters optimization research and the specialized optimization system development.Firstly, designing and compiling orthogonal experiment head and scheme with interaction influence. Five cutting parameters and three interactions are confirmed to research their influence on surface roughness. Considering all relative factors, three levels are selected for them respectively, and to draw factor-level table. Based on1327L(3), the head and scheme are finished with linear table design method.Secondly, to determine rake-relief angles and bank angles, metal impeller actual manufacturing. Based on VERICUT simulation machining technology, such as collision check and extreme limit travel setting, appropriate values are confirmed to guarantee NC program right. TDNC-A1M6-H8 five-axis linkage machining center is selected to do manufacturing based on workpiece and manufacturing conditions.Based on experimental data, poor analysis, variance analysis, signal to noise ratio(S/N) analysis of results are done to determine the primary and secondary order, significant and moderate degree of factors. Surface roughness and confidence are predicted. Analyze the reasons of effects based the machine kinetic characteristic, combining with theoretical mathematical models.Finally, the design and implementation of the cutting parameters optimization system are conducted. Overall and function structure design against it is conducted, the former including functional and performance requirements analysis. Database, human-computer interaction and functional module are designed with ACCESS database technology under VC++ programming circumstances.After the typical space curved surface parts, impeller, parameters optimization study, this paper develops the specialized system. This research results have been used in TDNC-A1M6-H8 NC system and actual processing, providing an important theoretical basis and practical significance for complex curved surface parts mass production.