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1 问题的提出球形燃烧室活塞的模具传统设计方法是:外模采用相对于销孔中心线45°夹角的双冒口,底模采用组合式即将球形部分进行分爿的上抽芯铸造工艺.该方法特点;能保证活塞的铸造质量;但冒口与毛坯比大,油耗与铝耗大;模具加工成本较高;浇注操作烦,劳动生产率低.为了降低毛坯成本,我们对该类型活塞的模具进行了改进.改进的总原则:(1)采用单冒口;(2)简化底模结构.
PROBLEM TO BE SOLVED BY THE INVENTION The traditional design method of the spherical combustion chamber piston mold is that the outer mold adopts a double riser with an angle of 45 ° with respect to the centerline of the pin hole and the bottom mold adopts a combination of an upper core-pulling casting process . The characteristics of the method; to ensure the quality of the piston casting; but riser and rough than large fuel consumption and consumption of aluminum large mold processing costs; pouring operation annoying, labor productivity is low. In order to reduce the cost of the blank, we type of piston Improved overall principles: (1) the use of a single riser; (2) to simplify the bottom mold structure.