【作者】 谢少庆；

【导师】 罗继相；

【作者基本信息】 武汉理工大学 ， 机械制造及其自动化， 2006， 硕士

【摘要】 挤压铸造是一种节能、省力和材料利用率较高的成型工艺。因为它的起步较压铸晚,所以在模具设计中它还是一个不很成熟的领域。随着汽车、摩托车、航空等工业的飞速发展,挤压铸造以其优良的工艺特点越来越得到了各界模具工作者的欢迎,其模具设计领域也具有广阔的发展前景。 但是由于模具设计的周期较长,耗时较多,导致模具成本较高,因此对挤压铸造模具进行系列化、标准化研究具有深远的适用价值。只有形成了挤压铸造模具设计的标准化,才能使其更快、更好的发展。模具的系列化研究是实现标准化的前提和必要条件,本文从模具部件结构的系列化出发,针对挤压铸造模具结构及工艺特点,完成了其系列化结构的研究。 主要工作体现在以下几个方面: (1)研究了挤压铸造工艺机理,分析了挤压铸造工艺的特点,归纳总结出挤压铸造工艺所适合的零件特征,对不同特征零件进行分类,找出合适于直接式、间接式和特种挤压铸造模具总体结构形式,初步建立了挤压铸造模具总体结构的系列。 (2)对同类和非同类模具的结构进行系统的分析、比较,找出各类机构的共性及特性,进而实现模具各部件的系列化,包括开合摸机构、卸料机构、抽芯机构、排气溢流装置等。 (3)使用VC++及数据库技术建立了挤压铸造模具结构的查询系统,该系统使用简单,管理有效,对从事挤压铸造模具设计的工程技术人员具有借鉴和参考价值。 (4)针对汽车空调活塞的结构特征,分析其质量要求及成型特点,借助于挤压铸造模具结构查询系统,设计了五种不同的挤压铸造模具结构,并对每种工艺方案进行分析,从中选择出了最为合适的成型方案。 对挤压铸造模具系列化、标准化的研究是一项具有深远意义的长期任务,需要所有从事挤压铸造技术的科技工作者和从业人员长期不断的努力,才能使挤压铸造模具系列化、标准化体系更加完善!更多还原

【Abstract】 As one new molding process, Squeeze casting famous on the virtue of source saving and higher materials utilization. With the rapid development of automobile, motorcycle, aviation, and other industries, squeeze casting is acknowledged for its fine craft characteristics.However, longer design cycle and excessive working hours lead to cost relatively higher. Therefore, research on squeeze casting serialization and standardization is imperative. Only squeeze casting mould design standardization can make it faster and better development. Research on squeeze casting mould design serialization is necessary to achieve its standardization. The paper’s work as follows:(1) Through advanced study on squeeze casting process craft mechanisms, analysis of squeeze casting process features, suming up the characteristics of suitable parts of squeeze casting process, classifying parts with different characteristics, this paper finds suitable structure of direct and indirect and the special squeeze casting mould. The serialization of overall structure of the mould achieves initially.(2) Through comparing and analyzing to structure of different moulds, this paper explores common characteristics and achieves serialization of the structure, including mould opening mechanism, clamping unit, stripping mechanism, core pulling mechanism and overflow and exhaust mechanism, etc.(3) Use VC++ and data-base technology, establish the search system, operate easy, has the patencied application value.(4) Take into account of the character of piston for air conditioner , design and analysed five different mold structure ,choose the reason one.The serialization and standardization of squeeze casting mould is a far-reaching work. We need all the scientists and practitioners in the technology of squeeze casting continuing efforts, to make the standardization system of squeeze casting mould more perfect!更多还原