畢业设计书摩托车尾盖锻造模具设计书.docVIP

摘 要 铝合金制品，其重量轻、抗冲击、耐用等方面优势，是减轻重量和提升产品性能的重要材料之一。6061铝合金中的主要合金元素为镁与硅，具有中等强度、良好的可成型性、抗腐蚀性、可焊接性、氧化效果较好，而且它的相变温度和锻造温度均较低，非常适合采用等温模锻方法制造复杂结构件。 本文对摩托车铝合金消声器尾盖进行锻造工艺分析，确定铝合金6061锻造热力学参数，确定锻件毛坯的加热方法，锻造模具的预热方法。 通过其锻造工艺分析，确定成型方案之后，用三维软件（PRO/E）设计该零件的锻造模具。 有限元数值模拟己经逐渐发展成为研究锻造过程的有效工具。本文使用大型锻造专用软件DEFORM-3D对铝合金6061复杂结构件等温锻造过程进行了模拟，充分了解金属的流动规律、应力应变分布规律，用三维软件（DEFORM-3D）的有限元分析模块分析了模具的应力应变规律，为锻造和模具设计过程提供有参价值的数据，从而可以减少试模时模具破裂的机率。 关键词：锻造 铝6061 PRO/E DEFROM-3D ABSTRACT The aluminum alloy is one important material for lightening the product weight and improving the product performance, because of the light weight, the anti- impact and the durable use of its product. The main alloying elements in the aluminum alloy 6061 are the magnesium and the silicon. Its product has the medium intensity, the good formability, the anti- cauterization, good welding, and the good oxidized effect; also its transformation temperature and the forging temperature are lower, so it is extremely suitable to manufacture complex structure by using the Isothermal Forging method. In this thesis, the forging craft of the aluminum alloy silencer cover of the motorcycle is analyzed, then the forging thermodynamic parameter of the aluminum alloy 6061, the method of heating up the forging billet and the preheating method of the forging dies are defined. Through the forging craft analysis, the shaping method of the forged piece is determined and then the forging dies is designed with the three dimensional software (PRO/E). Numerical simulation based on FEM has become a powerful tool on analyzing forging process. In this paper, 3-D numerical simulations for isothermal forging processes of a complex structural component of aluminum alloy 6061 were performed by using of DEFORM-3D software. The flowing rule of the alloy, the strain and the stress distribution rule within the work piece were analyzed in the simulation. Also the strain and the stress distribution rule of the dies were analyzed by using the three dimension