我的压铸模具论文.doc

锌合金底盘座铸件压铸模具设计 The Die-casting Mold Design of Zinc Subbase Casting 学 院：材料科学与工程学院 专 业 班 级：材料成型及控制工程0606班 学 号：　050201130 学 生 姓 名：　　朱墨 指 导 教 师：　李晨希（教授） 2010 年 07 月 摘 要 压力铸造是目前成型有色金属铸件的重要成型工艺方法。压铸的工艺特点是铸件的强度和硬度较高，形状较为复杂且铸件壁较薄，而且生产率极高。压铸模具是压力铸造生产的关键，压铸模具的质量决定着压铸件的质量和精度，而模具设计直接影响着压铸模具的质量和寿命。因此，模具设计是模具技术进步的关键，也是模具发展的重要因素。 件的形状特点、零件尺寸精度， 根据有关资料，采用扁平侧面浇注系统，降低了浇注时金属液对型芯的冲击，确定了铸造工艺参数：铸件加工余量取0.1～0.75mm，收缩率为0.4～0.7﹪，脱模斜度为25′～45′。模具整体尺寸为900×640×835mm，符合所选压铸机安装空间。抽芯采用斜滑块机构，拼合形式为两瓣式。推出机构采用4根端面直径26mm的圆截面推杆，推杆兼复位杆作用。经计算，推杆受力符合要求。通过电脑模拟显示，模具能够正常工作，开启灵活。 关键词：压力铸造；压铸模具；锌合金铸件；底盘座 Abstract Die-casting molding technology is playing a key role in non-ferrous metal structure forming processes. Die-casting process’s features are the strength and hardness of die casting on high, thin-walled castings with complex shape can be cast, and the production is efficient. The die-casting die is the key for the process of die casting, its quality decides the quality and accuracy of castings, and the design of the die-casting die affects its quality and operating life directly. Therefore, designing the die-casting die is the key to technological progress; it is also an important factor in the development of mold. Based mainly on parts of the design integrity of the structure and size, it scheme out the required spare parts. Design elements include: design of gating system, forming part design, core-pulling mechanism design, the ejector design and the mold body structure design. According to the shape of features , parts size and accuracy, the author selected the appropriate die casting machine, through the exactly calculate and consult design handbooks, confirm the size and accuracy of the forming part and mold body structure, it also makes particular instruction on the material selection and the requirements of the heat treatment, with theoretical basis, plotting out pictorial drawing and casting drawing of the parts by using computer software to ensure the manufacture of die-casting