五軸龍門加工中心可靠性分析與評價
[Abstract]:To improve the reliability level of domestic high-grade machining center and its key functional components is the primary task to conform to the development trend of CNC equipment with high precision, high efficiency, high speed, flexibility and compound machining. In this paper, we take the five-axis gantry machining center as the research object, funded by the key project of Jiangsu Science and Technology support Program, "Green Design Technology and Application Research of Large-scale Five-axis Precision Gantry Machining Center". The reliability level of the newly developed machining center is evaluated effectively through the comprehensive application of the reliability technology system. The main contents of this paper are as follows: in the stage of product design, according to the fault data of similar mature products, the fault location, fault mode and fault cause are analyzed by FMEA method. The weak parts of this kind of products are found and the corresponding improvement measures are put forward to improve the reliability of the design products. Based on the fault interval time data of similar mature products in service stage, the fault time model is established by using the distributed fitting test method. The fault data distribution of the batch machining center is determined from Weibull distribution, and the distribution rule of reliability is obtained. By studying the reliability distribution law of each failure time, the reliability model based on each failure time is established to describe the relationship between each failure time, and to realize the evaluation of reliability level of machining center. Considering the actual working conditions of machining center, a relatively comprehensive load spectrum is obtained by orthogonal design of cutting force test. The reliability evaluation model of WPHM is established with the amplitude mean of load spectrum as a single covariable. The dynamic simulation model of the whole machine is established by using the ADAMS software combined with the test load, and the load spectrum of the ball screw of the key parts is obtained, and then the static strength reliability analysis and fatigue life analysis of the ball screw are carried out. It is verified that the selected ball screw meets the requirements of reliability. Based on the grey theory, a grey GM (1 / 1) prediction model based on the fault interval time is established to predict the future fault occurrence time, so as to do the protection work well ahead of time. The reliability level of machining center is improved. The reliability information management system is developed by using Matlab GUI language according to the requirements of reliability evaluation and analysis, and the fault data management and statistical analysis are realized. Reliability evaluation and prediction functions.
【學位授予單位】:東南大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TG659
【參考文獻】
相關(guān)期刊論文 前10條
1 張政潑;胡義華;王湘;;絲杠系預拉伸力的綜合分析計算和探討[J];機械工程學報;2015年23期
2 張仕新;昝翔;李浩;韓朝帥;;威布爾比例風險模型裝備狀態(tài)維修檢測間隔期研究[J];火力與指揮控制;2015年07期
3 YANG Zhou;ZHU Yunpeng;REN Hongrui;ZHANG Yimin;;Comprehensive Reliability Allocation Method for CNC Lathes Based on Cubic Transformed Functions of Failure Mode and Effects Analysis[J];Chinese Journal of Mechanical Engineering;2015年02期
4 陸瓊曄;張瑞華;;滾珠絲杠的模態(tài)與疲勞壽命分析[J];現(xiàn)代制造工程;2015年01期
5 范晉偉;周中源;王澤立;苗偉;;GM(1,1)模型在數(shù)控磨床可靠性預測中的應用[J];制造技術(shù)與機床;2015年01期
6 朱堅民;王健;張統(tǒng)超;李孝茹;;基于刀具振動位移的動態(tài)銑削力測量方法[J];儀器儀表學報;2014年12期
7 張博文;陸志強;張岳君;;基于系統(tǒng)可靠性的生產(chǎn)與維護計劃聯(lián)合決策[J];計算機集成制造系統(tǒng);2015年08期
8 楊兆軍;楊川貴;陳菲;郝慶波;鄭志同;王松;;基于PSO算法和SVR模型的加工中心可靠性模型參數(shù)估計[J];吉林大學學報(工學版);2015年03期
9 張根保;郭書恒;;基于競爭威布爾模型的加工中心可靠性評估[J];計算機集成制造系統(tǒng);2015年01期
10 郭建英;孫永全;于春雨;苑會娟;蘇子美;;復雜機電系統(tǒng)可靠性預測的若干理論與方法[J];機械工程學報;2014年14期
相關(guān)會議論文 前1條
1 孫奎洲;周金宇;;基于Matlab的滾珠絲杠可靠性優(yōu)化設(shè)計[A];2010年全國機械行業(yè)可靠性技術(shù)學術(shù)交流會暨第四屆可靠性工程分會第二次全體委員大會論文集[C];2010年
相關(guān)博士學位論文 前2條
1 劉晨曦;伺服轉(zhuǎn)塔刀架可靠性評估及結(jié)構(gòu)優(yōu)化[D];東南大學;2016年
2 謝清;定制產(chǎn)品功能—結(jié)構(gòu)映射原理、方法及關(guān)鍵技術(shù)研究[D];浙江大學;2007年
相關(guān)碩士學位論文 前9條
1 王東亮;基于載荷譜的主軸電液伺服加載可靠性試驗技術(shù)研究[D];吉林大學;2015年
2 位寶磊;高速精密數(shù)控車床可靠性評價、分配和預測技術(shù)研究[D];河南科技大學;2015年
3 方杰;加工中心載荷測試技術(shù)與載荷譜編制方法研究[D];吉林大學;2014年
4 黃兆哲;數(shù)控高速沖床的故障分析與研究[D];吉林大學;2013年
5 張雷;基于Bayes理論的重型數(shù)控機床可靠性評定方法研究[D];燕山大學;2013年
6 劉永峰;高速沖床故障及可靠性分析技術(shù)研究[D];南京理工大學;2013年
7 彭衛(wèi)文;高速五坐標橫梁移動龍門加工中心可靠性評估技術(shù)研究[D];電子科技大學;2012年
8 肖振林;GMC2000A龍門加工中心可靠性分析與研究[D];電子科技大學;2012年
9 王元軍;MCH63臥式加工中心可靠性分析與研究[D];南京航空航天大學;2010年
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