本文主要研究内容
作者孔黄海（2019）在《超声辅助电解-磨削高效加工小孔技术研究》一文中研究指出：小孔结构在诸多工程领域应用广泛,孔壁的表面质量往往决定了小孔零件的使用性能,随着小孔零件向精密化的发展,对小孔超精密加工的需求也越来越迫切。为进一步提高小孔的加工精度和表面加工质量,本文将超声振动应用于电解磨削复合加工技术中,利用超声振动的空化作用和强化传质效果对加工环境进行优化,提升了电解-磨削加工小孔的加工质量和加工效率。本文利用超声辅助电解磨削加工技术对小孔进行高效扩孔加工,并对此加工方式进行了理论分析及一系列加工试验,主要研究内容如下:(1)搭建了超声辅助电解磨削加工试验平台,包括电解加工机床、超声波电加工主轴、高频脉冲电源、电流采集系统等;研制了金刚石磨粒球头电极,使经过超声辅助电解磨削扩孔加工处理的小孔侧壁基本无锥度。(2)利用电化学工作站测定了工件材料在不同成分和浓度的电解液中的极化曲线,获取了工件材料在不同电解液中的电化学行为特性,分析了其在不同电解液条件下的钝化效果和钝化层致密性,为选择试验加工所用的电解液奠定了基础。(3)建立超声辅助电解磨削扩孔加工数学模型,对超声辅助电解磨削加工机理进行了研究;通过对加工过程中的间隙电场进行仿真分析,获取了间隙电场电流密度与工件表面轮廓的瞬态演变过程,结果表明球头工具电极可以有效减小小孔侧壁锥度;通过对加工过程中的间隙流场进行仿真分析,研究了工具电极的轴向超声振动对加工间隙流场的扰动作用,获得了间隙流场的压强分布图和速度矢量图,结果表明工具电极的轴向超声振动可促进加工间隙内电解液的更新。(4)利用搭建的试验平台对0Cr18Ni9不锈钢和GH3030高温合金两种工件材料进行了超声辅助电解钻削预孔加工和超声辅助电解磨削扩孔加工试验,研究了电加工参数、进给速度、磨削速度、磨粒目数、超声振幅等参数对小孔的加工质量、加工效率和加工稳定性的影响,实现了加工过程中电解作用和机械研磨作用的合理匹配,最终在优化加工参数下获得了高加工精度和表面加工质量的小孔。
Abstract
xiao kong jie gou zai zhu duo gong cheng ling yu ying yong an fan ,kong bi de biao mian zhi liang wang wang jue ding le xiao kong ling jian de shi yong xing neng ,sui zhao xiao kong ling jian xiang jing mi hua de fa zhan ,dui xiao kong chao jing mi jia gong de xu qiu ye yue lai yue pai qie 。wei jin yi bu di gao xiao kong de jia gong jing du he biao mian jia gong zhi liang ,ben wen jiang chao sheng zhen dong ying yong yu dian jie mo xiao fu ge jia gong ji shu zhong ,li yong chao sheng zhen dong de kong hua zuo yong he jiang hua chuan zhi xiao guo dui jia gong huan jing jin hang you hua ,di sheng le dian jie -mo xiao jia gong xiao kong de jia gong zhi liang he jia gong xiao lv 。ben wen li yong chao sheng fu zhu dian jie mo xiao jia gong ji shu dui xiao kong jin hang gao xiao kuo kong jia gong ,bing dui ci jia gong fang shi jin hang le li lun fen xi ji yi ji lie jia gong shi yan ,zhu yao yan jiu nei rong ru xia :(1)da jian le chao sheng fu zhu dian jie mo xiao jia gong shi yan ping tai ,bao gua dian jie jia gong ji chuang 、chao sheng bo dian jia gong zhu zhou 、gao pin mai chong dian yuan 、dian liu cai ji ji tong deng ;yan zhi le jin gang dan mo li qiu tou dian ji ,shi jing guo chao sheng fu zhu dian jie mo xiao kuo kong jia gong chu li de xiao kong ce bi ji ben mo zhui du 。(2)li yong dian hua xue gong zuo zhan ce ding le gong jian cai liao zai bu tong cheng fen he nong du de dian jie ye zhong de ji hua qu xian ,huo qu le gong jian cai liao zai bu tong dian jie ye zhong de dian hua xue hang wei te xing ,fen xi le ji zai bu tong dian jie ye tiao jian xia de dun hua xiao guo he dun hua ceng zhi mi xing ,wei shua ze shi yan jia gong suo yong de dian jie ye dian ding le ji chu 。(3)jian li chao sheng fu zhu dian jie mo xiao kuo kong jia gong shu xue mo xing ,dui chao sheng fu zhu dian jie mo xiao jia gong ji li jin hang le yan jiu ;tong guo dui jia gong guo cheng zhong de jian xi dian chang jin hang fang zhen fen xi ,huo qu le jian xi dian chang dian liu mi du yu gong jian biao mian lun kuo de shun tai yan bian guo cheng ,jie guo biao ming qiu tou gong ju dian ji ke yi you xiao jian xiao xiao kong ce bi zhui du ;tong guo dui jia gong guo cheng zhong de jian xi liu chang jin hang fang zhen fen xi ,yan jiu le gong ju dian ji de zhou xiang chao sheng zhen dong dui jia gong jian xi liu chang de rao dong zuo yong ,huo de le jian xi liu chang de ya jiang fen bu tu he su du shi liang tu ,jie guo biao ming gong ju dian ji de zhou xiang chao sheng zhen dong ke cu jin jia gong jian xi nei dian jie ye de geng xin 。(4)li yong da jian de shi yan ping tai dui 0Cr18Ni9bu xiu gang he GH3030gao wen ge jin liang chong gong jian cai liao jin hang le chao sheng fu zhu dian jie zuan xiao yu kong jia gong he chao sheng fu zhu dian jie mo xiao kuo kong jia gong shi yan ,yan jiu le dian jia gong can shu 、jin gei su du 、mo xiao su du 、mo li mu shu 、chao sheng zhen fu deng can shu dui xiao kong de jia gong zhi liang 、jia gong xiao lv he jia gong wen ding xing de ying xiang ,shi xian le jia gong guo cheng zhong dian jie zuo yong he ji xie yan mo zuo yong de ge li pi pei ,zui zhong zai you hua jia gong can shu xia huo de le gao jia gong jing du he biao mian jia gong zhi liang de xiao kong 。
论文参考文献
论文详细介绍
论文作者分别是来自山东大学的孔黄海，发表于刊物山东大学2019-07-16论文，是一篇关于超声辅助论文,电解磨削论文,高效论文,扩孔论文,表面加工质量论文,山东大学2019-07-16论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自山东大学2019-07-16论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。