不同形状截割头截齿排列的参数化设计  

Pick arrangement parameterization of different shape cutting heads

作　　者：李晓豁[1] 史秀宝[1] 吴迪[1] 林其岳[1] 

机构地区：[1]辽宁工程技术大学机械工程学院,辽宁阜新123000

出　　处：《黑龙江科技学院学报》2009年第6期454-457,共4页Journal of Heilongjiang Institute of Science and Technology

基　　金：国家自然科学基金资助项目(59774033);辽宁省教育厅高校创新团队项目(2007T068);大型工矿装备实验研究中心(辽宁省高校重点实验室)开放基金项目(07-51);中国煤炭工业协会科学技术研究指导性计划项目(MTKJ-08-311);辽宁省大型工矿装备重点实验室(辽宁省第二批科学技术计划项目;2008403010)

摘　　要：通过对螺旋升角的定义,建立截割头包络面螺旋线的数学模型,提出等螺旋升角的截齿排列理论,给出不同形状截割头包络面母线的截齿空间位置模型。通过编制程序进行实例设计,获得两种不同形状的截割头及其截齿的排列和切屑图。结果表明,该模型设计的截齿排列分布均匀,截线距从截割头大端向小端递减,各截齿的切削面积均匀,截齿受力状况良好,满足截齿排列的要求,为截割头设计及截齿排列的参数化奠定了基础。This paper discusses the development of a mathematical model for spiral line of cutting head envelope surface by defining rise angle, presents the theory of equal-rise-angle pick arrangement, and introduces the model of pick position obtained for generatix of envelope surface with different shape of cutting heads. Practical design by working out computer program results in cutting heads of two different shape and figures of pick arrangement and cutting pattern. The results show that the pick arrangement designed by the model features a uniform distribution, progressively decreasing transversal distance from big end to small end of the cutting head, uniform gross in chip area of each pick, and better loads of picks, The pick arrangement, up to qualification of pick arrangement, provides a foundation of pick arrangement parameterization.

关 键 词：掘进机 截割头 截齿排列 螺旋线 切屑图 参数化 

分 类 号：TD421.5[矿业工程—矿山机电]