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凹模的設(shè)計(jì) 凸凹模本設(shè)計(jì)中模具主要零件有:上模座、下模座、螺釘、銷釘、導(dǎo)柱、導(dǎo)套等,其規(guī)格如下:1. 上模座160160402. 下模座160160453. 螺釘、墊板與凸凹模固定板固定螺釘(共4個(gè))圓柱頭螺釘 M1072a. 圓柱頭螺釘 M1088b. 下模座與凸模固定螺釘(共2個(gè)) 圓柱頭螺釘 M830(共1個(gè))卸料螺釘 M10120a. 上模座與墊板,凸凹模定位銷釘(共2個(gè)) M1076(共2個(gè)) M10110(共2個(gè)) φ42200(共2個(gè))φ421105217 結(jié) 論本文對所給的底腳從毛坯到成型的成形過程進(jìn)行了全面細(xì)致的研究分析,結(jié)合實(shí)際情況,設(shè)計(jì)了本套模具。本套模具可完成四角形彎曲的兩道工序,其特點(diǎn)主要是彎曲所需的兩道工序在一個(gè)工位上完成。這樣做出的制件,因?yàn)樵谝粋€(gè)工位上,所以制件的形狀尺寸較精確。另外模具結(jié)構(gòu)簡單,且模具結(jié)構(gòu)得到最優(yōu)化。為了在彎曲過程中控制凸凹模間隙,防止毛坯與模具產(chǎn)生摩擦損壞模具,在本次設(shè)計(jì)中采用四個(gè)頂桿,這樣使凸模受力均勻,不會(huì)產(chǎn)生重心偏移。這套模具結(jié)構(gòu)靈活、可靠,并能保證產(chǎn)品的質(zhì)量。對此類零件的模具設(shè)計(jì)有很重要的參考價(jià)值。尤其是復(fù)合彎曲的優(yōu)勢表現(xiàn)的淋漓盡致,大大簡化了模具結(jié)構(gòu)和節(jié)約了成本與工時(shí)的浪費(fèi)。用最簡單的模具生產(chǎn)出最經(jīng)濟(jì)的合格產(chǎn)品。致 謝本設(shè)計(jì)是在穆欣老師的直接關(guān)懷和悉心指導(dǎo)下完成的。在設(shè)計(jì)過程中穆老師的淵博知識和嚴(yán)謹(jǐn)?shù)闹螌W(xué)態(tài)度以及平和的人生態(tài)度是學(xué)生終生學(xué)習(xí)、工作的楷模。穆老師在此,學(xué)生衷心的感謝穆老師在這兩個(gè)月畢業(yè)設(shè)計(jì)時(shí)日里的關(guān)懷和栽培。在本設(shè)計(jì)過程中,穆老師給了學(xué)生莫大的幫助,及時(shí)幫我解決了設(shè)計(jì)以及畫圖中出現(xiàn)的問題。穆老師介紹了壓力機(jī)的結(jié)構(gòu)及工作過程,模具制造過程中遇到的問題等,給了學(xué)生很多實(shí)際經(jīng)驗(yàn)。在此謹(jǐn)表深切謝意。在一起做畢業(yè)設(shè)計(jì)的同學(xué)中,李瑞、范偉同學(xué)等都給了我很大的幫助。在此,一并表示感謝。參考文獻(xiàn)[1] 鄭人杰. 計(jì)算機(jī)軟件測試技術(shù). 北京: 清華大學(xué)出版社, 1992 [2] Wolf W, 孫玉芳等譯. 嵌入式計(jì)算系統(tǒng)設(shè)計(jì)原理. 北京: 機(jī)械工業(yè)出版社, 2002 [3]郝躍, 馬佩軍, 張衛(wèi)東. 功能成品率估算的缺陷特征參數(shù)提取法. 電子學(xué)報(bào), 2000, 28(8): 7678[4]羅建林. 漢語形式語法中的空位和非常序. 見:陳力為主編. 計(jì)算語言學(xué)研究與應(yīng)用. 北京: 北京語言學(xué)院出版社,1993. 18[5]苗奪謙. Rough Set理論在機(jī)器學(xué)習(xí)中的應(yīng)用研究[博士學(xué)位論文]. 中國科學(xué)院自動(dòng)化研究所, 北京, 1997 [6]南京大學(xué), 天津大學(xué), 重慶大學(xué), 等. 粘滯流體力學(xué). 北京: 高等教育出版社, 1987[7]鄭家閑 沖壓模具設(shè)計(jì)實(shí)用手冊 北京:機(jī)械工業(yè)出版社 2007 7[8]王鵬駒 成虹 沖壓模具設(shè)計(jì)師手冊 機(jī)械工業(yè)出版社, 2008 10[9]《沖壓模具設(shè)計(jì)手冊》 沖模設(shè)計(jì)手冊 機(jī)械工業(yè)出版社[10]薛翔 沖壓模具設(shè)計(jì)結(jié)構(gòu)圖冊 北京 化學(xué)工業(yè)出版社 2005 7[11]:電子工業(yè)出版 [12]:[13]劉小年 :[14]陳桂芬 機(jī)械制圖與計(jì)算機(jī)繪圖 西安電子科技大學(xué)出版社 2006 [15]李奇涵 沖壓成型工藝與模具設(shè)計(jì) 科學(xué)出版社2007 27外文資料翻譯 Stamping and Punching Dies, Compound Die DesignA pound die performs only cutting operations (usually blanking and piercing) which are pleted during a single press stroke. A characteristic of pound dies is the inverted position of the blanking die and blanking punch which also functions as the piercing die. The die is fastened to the upper shoe and the blanking punch having a tapered hole in it and in the lower shoe for slug disposal is mounted on the lower shoe. The guide pins, or posts, are mounted in the lower shoes. The upper shoes contains bushing which slide on the guide pins. The assembly of the lower and upper shoes with guide pins and bushing is a die set. Die sets in many sizes and designs are mercially available.On the upstroke of the press slide, the knock out rod of the press strikes the ejector plate, forcing the ejector tie rod and shedder downward, thus pushing the finished work piece out of the blanking die. Four special shoulder screws (stripper bolts), mercially available, guide the stripper in its travel and retain it against the preload of its springs. The blanking die as well as the punch pad is screwed and doweled to the upper shoe. Bending Die Bending is the uniform straining of material, usually flat sheet or strip metal, around a straight axis which lies in the neutral plane and normal to the lengthwise direction of the sheet or strip. Metal flow takes place within the plastic range of the lengthwise direction of the bend retains a permanent set after removal of the applied stress. The inner surface of a bend is in pression。 the outer surface is in tension. A pure bending action does not reproduce the exact shape of the punch and die in the metal。 such a reproduction is one of forming. The neutral axis is the plane area in bend metal where all strain is zero. Bending Methods Metal sheet or strip, supported by a V bending, produces a bend having an included angle which may be acute, obtuse, or of 90. Friction between a springloaded knurled pin in the Vee of a die and the part will prevent or reduce side creep of the part during its bending. Other methods are Zbending edge bending and Ubending etc. Drawing DieDrawing is a process of changing a flat, precut metal blank into a hollow vessel without excessive wrinkling, thinning, or fracturing. The various forms produced may be cylindrical or boxshaped with straight or tape