摘要
数字化无模砂型加工技术采用干式切削,导致加工过程中砂屑不易及时排除。为了解决这一问题,并满足无模砂型高效加工对立铣刀的柔性和可靠性需求,提出了一种气动排砂空心立铣刀;然后,对空心立铣刀结构进行了模块化设计,并结合有限元法对关键连接结构进行了模拟分析;最后,对空心立铣刀进行了加工制造验证,并与传统立铣刀进行了无模化砂型加工对比。研究表明:采用模块化方法设计空心立铣刀是可行的,该空心立铣刀能够有效解决砂型干式切削排屑问题,提高无模砂型加工效率。
Digital patternless sand mold process technology adopts dry cutting method. This leads to the difficulty to remove the sand chips in time during milling sand mold. To solve the problem and meet the demand of flexibility and reliability of patternless sand mold machining cutter,a aerodynamically assisted sand chips discharging hollow end milling cutter was proposed. Then, structural design of hollow milling cutter was accomplished using modular design method and its main junction structure was analyzed with finite element method. In the end, sand mold machining verification using the hollow end mill and the conventional end mill was provided. The results show, modular design method integrated with finite element analysis is practicable, and that the hollow end mill has solved the problem of sand chips removal during machining sand molds by dry cutting and can improve the processing efficiency of sand mold.
出处
《机械设计与制造》
北大核心
2015年第8期193-196,共4页
Machinery Design & Manufacture
基金
“高档数控机床与基础制造装备”科技重大专项(2012ZX04007011)
关键词
无模铸造
砂型
干式切削
空心立铣刀
模块化设计
有限元
Patternless Casting
Sand Mold
Dry Cutting
Hollow end Mill
Modular Design
Finite Element
