【正文】 父視圖——選擇剖切方向——剖切位置——“添加段”和“移動段”功能多次的使用，將剖切位置合理定位。右鍵點(diǎn)擊“樣式”，將剖面線去除。如圖511所示。圖511 創(chuàng)建階梯剖視圖結(jié) 論利用NX 軟件設(shè)計(jì)的汽車覆蓋件參數(shù)化模具，減少了模具設(shè)計(jì)人員繁雜的重復(fù)建模工作，大大提高模具設(shè)計(jì)效率，縮短模具設(shè)計(jì)周期，并為后續(xù)的模具加工提供了基礎(chǔ)，增強(qiáng)了企業(yè)的市場競爭能力。設(shè)計(jì)過程中，雖然有很多的理論依據(jù)，但模具設(shè)計(jì)是一門綜合性很強(qiáng)的技術(shù)，設(shè)計(jì)中遇到的很多技術(shù)難題單靠一些理論知識是完全不夠的，這就要求有很強(qiáng)的實(shí)際經(jīng)驗(yàn)來進(jìn)行指導(dǎo)。本設(shè)計(jì)主要完成了如下內(nèi)容：1)邊鑲塊、廢料刀的設(shè)計(jì)及廢料刀的分布；2)料芯及沖頭的設(shè)計(jì)；3)凸模的設(shè)計(jì)；4)下模座及排料系統(tǒng)的設(shè)計(jì)；5)上模座的設(shè)計(jì)；6)根據(jù)三維模型導(dǎo)出模具裝配工程圖，修邊鑲塊和壓料芯工程圖。模具會簽結(jié)果表明，所設(shè)計(jì)的模具結(jié)構(gòu)合理，符合各項(xiàng)技術(shù)標(biāo)準(zhǔn)和企業(yè)實(shí)際生產(chǎn)沖壓線的要求。參考文獻(xiàn)[1] ，.[2] ,.[3] ,1994.[4] 周天瑞. 汽車覆蓋件沖壓成形技術(shù)[M]. 北京：機(jī)械工業(yè)出版社，2000.[5] 《現(xiàn)代模具技術(shù)》：國防工業(yè)出版社,1998.[6] 楊玉英，石磊，[J].中國機(jī)械工程，2004，15（10）:902904. [7] 、,1999.[8] 劉建東，.[9] 曹立文,王冬,1998.[10] 第四冊 修邊沖孔模 . 東風(fēng)汽車模具廠,.[11] ,1999.社，2008.[12] 張小國，2004，（8）:143145.[13] ：電子工業(yè)出版社，.[14] ：清華大學(xué)出版社，2006.[15] 毛衛(wèi)平,肖愛民 ,[16] ,2004.[17] Boer C R,Rebelo N,Rydstad h,Schroder G. Process Modelling of Forming and Thermomechanical and Bound in England by Hazell watson and Vineyltd,Aylesbury and slough,1962.附錄 英文文獻(xiàn)A Reconfigurable Stamping Die and Its Stamping ProcessSONG Aiping (宋愛平), WU Wei wei (吳偉偉), ZHANG Jun (張軍)(College of Mechanical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, China)Abstract: A reconfigurable flexible poles die was developed. The die can be used to implement the process of “the multipoint pressing and forming sheet”. Sheet metal is restricted by the elastic pressing forces putting on the upper and lower surfaces of sheet in stamping process. The method is an effective way to enhance the bucklingcritical stresses and reduce wrinkling of sheet. The results of tests indicate that the die can achieve “one die brings multipurpose” and suppress the wrinkle of sheet. The process of the multipoint pressing and forming sheet provides a practical andeffective way for the curved sheet metal forming.Key words: stamping process； wrinkle； reconfigurable；die1 IntroductionWrinkling of sheet metal seriously influences the forming quality and the life of die. It may make the forming process unable to carry on. So effectively suppressing wrinkle seems to be highly important. In recent years, in order to meet the demand of light and tough sheet metal, thin sheet metal parts are widely applied in various fields. The study of Wrinkling bees one of the hottest research topics.Since the near century, many scholars have brought massive studies and discussions into the instability of sheet. These researches covered from the experimental study and the theoretical analysis to the numerical simulation, from the sheet drawing and the bend forming to the hydroforming, from the wrinkle forecast to the buckling control and so on. Recently, numerical simulation of a forming process is applied to study on wrinkle. Depending on the modern advanced research methods, numerical simulation based on the finite element method has bee the main tool of study wrinkling in decades. However, majority studies encircle wrinkling bifurcation of sheet metal and the situations of wrinkling at the present time. But these cannot bring any feasible method for controlling the wrinkles in stamping.Currently, the representative research and application of the reconfigurable die technology is the multipoint forming technology. The basic principle is using a series of regular and adjustable the basic bodies (poles)to construct the structure of a die. Thus, the reconstruction of die can be achieved, but the wrinkling in the sheet metal has not been suppressedThe paper emphasizes how to control wrinkle of sheet forming. Main ideas in the paper are two: One idea is to improve the supporting condition of sheet metal and increase its buckling critical stresses. Thus, “the multipoint pressing and forming sheet” technique will be proposed. Another idea is to explore a reconfigurable die which is bining the technique of “the multipoint pressing and forming sheet”.2 Poles Flexible DieIn order to reduce the wrinkling of sheet, a method of using elastic pressing forces putting on surfaces of sheet in stamping process was presented, it can improve the stability of sheet metal.A new reconfigurable die was developed. The die has high efficiency in reconfiguration so that it can achieve multipurpose use. Simultaneously the die can be carried out the process of “the multipoint pressing and forming sheet”.Curved sheet metal parts are used in many products such as aerospace products, military products, ships and engineering machines, the batch of parts is small.Different shape requires different die for forming sheet metal. It leads to high