本文主要研究内容
作者邱燕飞(2019)在《金刚石磨粒三维可控排布树脂磨具的构造与制备》一文中研究指出:磨削加工过程中,工件的加工质量是由处于不同空间位置的磨粒共同作用的结果,因此磨粒的空间位置对工件加工质量有着决定性的影响。对磨具表面磨粒进行合理的位置规划和控制,还可以使磨具表面磨粒受力均匀,磨损合理,从而可综合提高磨具的寿命及磨削性能。目前对于磨粒二维排布磨具(单层磨具)的研究证实了磨粒排布对加工性能的重要影响。相比而言,目前对于磨粒三维排布磨具的研究尚不多见。本文针对端面磨削加工,从单颗磨粒运动轨迹入手,仿真计算了不同磨粒三维空间排布以及不同加工工艺参数条件下的磨粒运动轨迹。采用磨粒运动轨迹均匀性系数(VCSD)对加工表面进行了评价。仿真结果表明:(1)在磨具与工件接触表面上(X-Y平面),随着磨粒数目的增加,以及磨具外圈磨粒密度的增加,磨粒运动轨迹的均匀性都随之提高。(2)磨粒沿磨具深度方向(Z轴)的不同分布,对加工过程的稳定性有着重要的影响,这主要归因于磨粒与工件接触的磨粒数目随加工过程的变化。(3)加工工艺参数与磨粒排布对磨粒运动轨迹均匀性的影响并无耦合作用,降低进给速度,可有效提高磨粒运动轨迹的均匀性;但主轴转速与磨粒运动轨迹的均匀性无显著关联性。基于增材制造原理,自主设计研发了磨粒三维可控排布树脂磨具的制造装置。装置由树脂涂布机构,树脂刮平回收机构,磨粒排布机构,升降机构,固化机构五部分组成。对所设计的磨粒三维可控排布磨具进行数字化分层,结合树脂分层光固化以及磨粒模板排布法,实现对金刚石磨粒三维可控排布树脂磨具的生产。经检测表明,所制备磨具中磨粒空间位置与设计模型之间的误差小于10%。磨粒的漏排率小于0.5%。实验表明所开发的装置可以有效地实现磨粒三维可控排布磨具的生产。利用所开发的装置生产了磨粒不同三维空间排布的金刚石树脂磨具。通过石英玻璃的端面磨削实验,分析了磨粒不同空间排布以及不同加工参数对工件表面质量以及工具性能的影响规律。实验证实,相比于无序排布磨具,磨粒的排布可有效提高磨具的寿命,提升加工质量。采用粗糙度均匀性系数(NUC)来评价加工后工件整体表面加工质量的均匀性,结果表明在不同的磨粒排布及加工工艺参数条件下,工件加工表面粗糙度均匀性系数与磨粒运动轨迹均匀性系数都有着较为吻合的变化规律。这表明本文所提出的磨粒运动轨迹理论模型可以较好地用于加工工件表面质量的预测。通过对树脂磨具加工过程中的磨粒失效形式的分析,提出了颗粒增强法改进树脂结合剂性能,研究了不同添加颗粒对树脂结合剂机械性能及磨粒把持力的影响规律。结果表明通过添加15 wt.%的氧化铝(Al2O3)可有效提升磨具的性能,减小磨削实验与理论模型的误差。本文对磨粒三维有序排布磨具进行设计及仿真计算,并实现磨粒三维可控排布磨具的制备,磨粒空间位置与设计的排布样式有较好的吻合性;磨削实验对仿真计算结果进行有较好地验证。研究成果为新型性能可控磨具的开发,及加工过程优化提供了理论依据。
Abstract
mo xiao jia gong guo cheng zhong ,gong jian de jia gong zhi liang shi you chu yu bu tong kong jian wei zhi de mo li gong tong zuo yong de jie guo ,yin ci mo li de kong jian wei zhi dui gong jian jia gong zhi liang you zhao jue ding xing de ying xiang 。dui mo ju biao mian mo li jin hang ge li de wei zhi gui hua he kong zhi ,hai ke yi shi mo ju biao mian mo li shou li jun yun ,mo sun ge li ,cong er ke zeng ge di gao mo ju de shou ming ji mo xiao xing neng 。mu qian dui yu mo li er wei pai bu mo ju (chan ceng mo ju )de yan jiu zheng shi le mo li pai bu dui jia gong xing neng de chong yao ying xiang 。xiang bi er yan ,mu qian dui yu mo li san wei pai bu mo ju de yan jiu shang bu duo jian 。ben wen zhen dui duan mian mo xiao jia gong ,cong chan ke mo li yun dong gui ji ru shou ,fang zhen ji suan le bu tong mo li san wei kong jian pai bu yi ji bu tong jia gong gong yi can shu tiao jian xia de mo li yun dong gui ji 。cai yong mo li yun dong gui ji jun yun xing ji shu (VCSD)dui jia gong biao mian jin hang le ping jia 。fang zhen jie guo biao ming :(1)zai mo ju yu gong jian jie chu biao mian shang (X-Yping mian ),sui zhao mo li shu mu de zeng jia ,yi ji mo ju wai juan mo li mi du de zeng jia ,mo li yun dong gui ji de jun yun xing dou sui zhi di gao 。(2)mo li yan mo ju shen du fang xiang (Zzhou )de bu tong fen bu ,dui jia gong guo cheng de wen ding xing you zhao chong yao de ying xiang ,zhe zhu yao gui yin yu mo li yu gong jian jie chu de mo li shu mu sui jia gong guo cheng de bian hua 。(3)jia gong gong yi can shu yu mo li pai bu dui mo li yun dong gui ji jun yun xing de ying xiang bing mo ou ge zuo yong ,jiang di jin gei su du ,ke you xiao di gao mo li yun dong gui ji de jun yun xing ;dan zhu zhou zhuai su yu mo li yun dong gui ji de jun yun xing mo xian zhe guan lian xing 。ji yu zeng cai zhi zao yuan li ,zi zhu she ji yan fa le mo li san wei ke kong pai bu shu zhi mo ju de zhi zao zhuang zhi 。zhuang zhi you shu zhi tu bu ji gou ,shu zhi gua ping hui shou ji gou ,mo li pai bu ji gou ,sheng jiang ji gou ,gu hua ji gou wu bu fen zu cheng 。dui suo she ji de mo li san wei ke kong pai bu mo ju jin hang shu zi hua fen ceng ,jie ge shu zhi fen ceng guang gu hua yi ji mo li mo ban pai bu fa ,shi xian dui jin gang dan mo li san wei ke kong pai bu shu zhi mo ju de sheng chan 。jing jian ce biao ming ,suo zhi bei mo ju zhong mo li kong jian wei zhi yu she ji mo xing zhi jian de wu cha xiao yu 10%。mo li de lou pai lv xiao yu 0.5%。shi yan biao ming suo kai fa de zhuang zhi ke yi you xiao de shi xian mo li san wei ke kong pai bu mo ju de sheng chan 。li yong suo kai fa de zhuang zhi sheng chan le mo li bu tong san wei kong jian pai bu de jin gang dan shu zhi mo ju 。tong guo dan ying bo li de duan mian mo xiao shi yan ,fen xi le mo li bu tong kong jian pai bu yi ji bu tong jia gong can shu dui gong jian biao mian zhi liang yi ji gong ju xing neng de ying xiang gui lv 。shi yan zheng shi ,xiang bi yu mo xu pai bu mo ju ,mo li de pai bu ke you xiao di gao mo ju de shou ming ,di sheng jia gong zhi liang 。cai yong cu cao du jun yun xing ji shu (NUC)lai ping jia jia gong hou gong jian zheng ti biao mian jia gong zhi liang de jun yun xing ,jie guo biao ming zai bu tong de mo li pai bu ji jia gong gong yi can shu tiao jian xia ,gong jian jia gong biao mian cu cao du jun yun xing ji shu yu mo li yun dong gui ji jun yun xing ji shu dou you zhao jiao wei wen ge de bian hua gui lv 。zhe biao ming ben wen suo di chu de mo li yun dong gui ji li lun mo xing ke yi jiao hao de yong yu jia gong gong jian biao mian zhi liang de yu ce 。tong guo dui shu zhi mo ju jia gong guo cheng zhong de mo li shi xiao xing shi de fen xi ,di chu le ke li zeng jiang fa gai jin shu zhi jie ge ji xing neng ,yan jiu le bu tong tian jia ke li dui shu zhi jie ge ji ji xie xing neng ji mo li ba chi li de ying xiang gui lv 。jie guo biao ming tong guo tian jia 15 wt.%de yang hua lv (Al2O3)ke you xiao di sheng mo ju de xing neng ,jian xiao mo xiao shi yan yu li lun mo xing de wu cha 。ben wen dui mo li san wei you xu pai bu mo ju jin hang she ji ji fang zhen ji suan ,bing shi xian mo li san wei ke kong pai bu mo ju de zhi bei ,mo li kong jian wei zhi yu she ji de pai bu yang shi you jiao hao de wen ge xing ;mo xiao shi yan dui fang zhen ji suan jie guo jin hang you jiao hao de yan zheng 。yan jiu cheng guo wei xin xing xing neng ke kong mo ju de kai fa ,ji jia gong guo cheng you hua di gong le li lun yi ju 。
论文参考文献
论文详细介绍
论文作者分别是来自华侨大学的邱燕飞,发表于刊物华侨大学2019-10-31论文,是一篇关于磨粒三维可控排布论文,金刚石磨具论文,光固化树脂论文,磨粒轨迹均匀性论文,加工表面粗糙度均匀性论文,华侨大学2019-10-31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,资料来自华侨大学2019-10-31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。
标签:磨粒三维可控排布论文; 金刚石磨具论文; 光固化树脂论文; 磨粒轨迹均匀性论文; 加工表面粗糙度均匀性论文; 华侨大学2019-10-31论文;