【正文】 deviation. In addition, CNC bending machine for quick pack mould ready, when you require bending many small batch spare parts, it is one of the unquestionable consider reason. mould Even though you have full shelf, do not assume that these mould moulds suitable for bought a new machine. Must be checked every one mold to wear, the method is to measure the punch frontend to Taiwan shoulder length and Taiwan shoulder length between. For general mold, each feet deviation should be in hospital inches, and total length deviation is not more than + inches. As for jingmo mould, each feet accuracy should be + inches, must not be more than the total precision CNC inches. The best jingmo mould in CNC bending machine, the conventional mould used to manually bending machine. Bending parts of side Hypothesis along one 5 x 10 feet of 1090 176。 it is this factors, decision you need to consider a CNC bending machine or manual control bending machine. If bending accuracy + 1 176。, bending radius equal distance of openings times. For a bottom bend, mould Angle general for 86 ~ 90 176。 processing (smaller as well). Using this group of mould, notice the punch and concave die in stroke at the bottom of the gap, and cover springback and make the materials about 90 176。s final use, the known machine possibly occurs consider carefully first buys anything. workpiece The first one is worth considering important item is your production parts, the main point is buying a can finish machining task and workbench shortest, the minimum number of machines. Consider carefully material and the largest machining grades thickness and length. If a majority of work is thickness gauge, maximum length 16 10 inches of low carbon steel, so free bending force not greater than 50 tons. However, if engaged in a lot of bottom of forming, may be considered a 150 tonnage of machine tools. Ok, assuming the thickest material is 1/4 inch, 10 feet free bending need 165 tons, bottom bending (adjusted bending) will need at least 600 tons. If a majority of workpiece is 5 feet or shorter, number almost halve, which will greatly reduce the acquisition cost. Parts to determine the length of new machines specification is quite important. Flinch change In the same load, 10 feet machine table and the slider appear nao variable is 5 feet machine 4 times. This means that shorter machines need less gaskets adjustment, can produce qualified parts. Reduce gaskets adjusting preparation time shortened again. Materials brand is also a key factor. Compared with low carbon steel, stainless steel need load usually adds about 50 percent, while most of the brand of soft aluminum reduce 50%. You can always from bending machine manufacturers get machine tons, this table shows in decimal different thickness and different materials under each foot length required number estimation. Parts of the bending radius Using free warped, bending radius is concave die from the mouth times. In a free bending process, openings from should be metal material thickness of eight times. For example, using 1/2 inch opening from forming 16 gauge, lowcarbon steel parts bending radius about inches. If the bending radius nearly small to material thickness shall be bottom of forming. However, a bottom concave die forming equal pressure than free bending big 4 times the left and right sides. If less than bending radius material thickness, should be used in frontend fillet radius of less than material thickness of the punch, and turn to embossing bending method. So, need 10 times in liberty bending stress. Free bends, convex molding and according to 85 176。而且對(duì)我設(shè)計(jì)中的錯(cuò)誤進(jìn)行細(xì)心的指出和修改，耐心的為我講解工作原理，在百忙之中修改我的設(shè)計(jì)初稿，在這里再次的感謝您！同時(shí)，我要感謝我的同學(xué)和朋友，他們對(duì)我的設(shè)計(jì)提出了相當(dāng)好的建議，使我得以順利的完成論文，尤其在最后的關(guān)頭也是最困難的時(shí)候給了我莫大的鼓勵(lì)，在此我向他們表示感謝?；叵胝撐膶?xiě)作的日日夜夜，心中充滿(mǎn)了無(wú)限的感激之情。參考文獻(xiàn)[1]黨根茂，駱志斌，李集仁. 模具設(shè)計(jì)與制造[M]. 西安:西安電子科技大學(xué)出版社,2006[2]隗金文，[M]. 沈陽(yáng):東北大學(xué)出版社,2006.[3]徐進(jìn)，陳再枝. 模具材料應(yīng)用手冊(cè)[M]. 北京:機(jī)械工業(yè)出版社,2007.[4]徐發(fā)越. 實(shí)用模具設(shè)計(jì)與制造手冊(cè)[M]. 北京:機(jī)械工業(yè)出版社,2006.[5]王孝培. 實(shí)用沖壓技術(shù)手冊(cè)[M]. 北京:機(jī)械工業(yè)出版社,2007.[6]李壯云，葛宜遠(yuǎn). 液壓元件與系統(tǒng)[M]. 北京:.[7][M]. 北京:機(jī)械工業(yè)出版社,2007.[8]何存興. 液壓元件[M]. 北京:機(jī)械工業(yè)出版社,2005.[9]彭建聲，秦曉. 模具技術(shù)問(wèn)答[M]. 第二版. 北京:機(jī)械出版社,2007.[10]路甬祥. 液壓氣動(dòng)技術(shù)手冊(cè)[M]. 北京:機(jī)械工業(yè)出版社,2006.[11]徐政坤. 沖壓模具設(shè)計(jì)與制造[M]. 北京:化學(xué)工業(yè)出版社,2005.[12]機(jī)械設(shè)計(jì)師手冊(cè)編寫(xiě)組. 機(jī)械設(shè)計(jì)師手冊(cè)[M]. 北京:機(jī)械工業(yè)出版社,2009.[13]官忠范. 液壓傳動(dòng)系統(tǒng)[M]. 北京:機(jī)械工業(yè)出版社,2006.[14][M]. 第五版. 上海:上?？茖W(xué)技術(shù)出版社,2005.[15]Fitch,E. C. Hydraulic FailureAnalysis amp。 本文所設(shè)計(jì)的不足之外主要是尺寸方面存在著差異，由于圖書(shū)館中的資料提供的數(shù)據(jù)都是相近的，而且都存在一定的范圍，而所要設(shè)計(jì)的數(shù)據(jù)超出了這個(gè)范圍，這就導(dǎo)致所計(jì)算的一部分?jǐn)?shù)據(jù)源自于自己的估算，從而影響到折彎?rùn)C(jī)的總體尺寸設(shè)計(jì)。本文所設(shè)計(jì)的折彎?rùn)C(jī)的材料都是以經(jīng)濟(jì)實(shí)用為中心選取的。采用這種回路的主要作用就是防止液壓缸中的活塞桿停止運(yùn)動(dòng)后，在外力或自重作用下突然下滑造成事故。按照這套方案所生產(chǎn)的產(chǎn)品，基本滿(mǎn)足設(shè)計(jì)的需求，并且具有一定的經(jīng)濟(jì)性和實(shí)用性。 本章小結(jié)本章為折彎?rùn)C(jī)為三梁二柱式的非標(biāo)準(zhǔn)設(shè)備，它有兩根導(dǎo)柱，導(dǎo)柱的兩端通過(guò)過(guò)渡配合分別與上下梁相連，而在兩梁之間，裝有導(dǎo)向套的活動(dòng)梁在上面上下移動(dòng)，且導(dǎo)柱與導(dǎo)向套之間為間隙配合，則要求導(dǎo)柱上面該段的表面粗糙度應(yīng)為 ，同時(shí)在導(dǎo)柱與上下梁配合的地方，要求用來(lái)連接并固定上下梁，則在導(dǎo)柱與上下梁相接觸的地方，為使導(dǎo)柱垂直于上下梁，應(yīng)使導(dǎo)柱上的該兩平面的粗糙度為 ，而對(duì)于其他表面的粗糙度達(dá)到 就能滿(mǎn)足要求。，將壓緊塊與零件相接觸的直角邊都加工成半徑為3mm的圓弧。使其加工成直徑為20的四螺紋孔。，壓住零件的部分僅為靠為側(cè)的三邊，中間部分由銑床銑成一長(zhǎng)為490mm，寬為282mm，該過(guò)程用粗銑就可完成。，使其六個(gè)表面的粗糙度達(dá)到。對(duì)于壓緊塊來(lái)說(shuō)，只需要加工與活動(dòng)梁和零件相接觸的面，使其粗糙度達(dá)到，而對(duì)于其它面粗糙度只需達(dá)到。以上即為導(dǎo)柱的加工工藝安排。，粗磨面C、D、E、F和G，其余面均加工成最終所需要的尺寸。，攻絲后兩螺紋面的螺紋均為M42x3。，從A面繼續(xù)半精車(chē)該段 與面D，,。7. 以A面定位，從B面開(kāi)始繼續(xù)半精車(chē)該段，半精車(chē)時(shí)刀具走過(guò)的距離為60mm，且從距B面51mm處開(kāi)始加工退刀槽，退刀槽寬為9mm，與螺紋面之間的倒角為45度，半精車(chē)后，螺紋面的直徑為42mm。，從B面開(kāi)始粗車(chē)。保證兩端面之間的距離為456mm。面C需要進(jìn)行精磨，面D、E、F、G只需要進(jìn)行粗磨就行，而螺紋面、退刀槽面與面A、B只需要進(jìn)行到半精車(chē)就可達(dá)到要求。查《機(jī)械制造工藝學(xué)》可得，加工的總余量為個(gè)加工余量之和，可求得總加工余量為6mm。： 導(dǎo)柱的結(jié)構(gòu)簡(jiǎn)圖由導(dǎo)柱的結(jié)構(gòu)圖可知，導(dǎo)柱的總長(zhǎng)為456mm，導(dǎo)柱有三個(gè)階梯，中間直徑為60mm的部分長(zhǎng)為255mm，按圖上的順序，左邊部分的螺紋長(zhǎng)為50mm，直徑為44mm的部分長(zhǎng)為38mm，右邊部分的螺紋長(zhǎng)為51mm，直徑為44mm部分長(zhǎng)為44mm，兩螺紋的直徑均為42mm,兩邊的退刀槽寬均為9mm。本次設(shè)計(jì)的折彎?rùn)C(jī)為三梁二柱式的非標(biāo)準(zhǔn)設(shè)備，它有兩根導(dǎo)柱，導(dǎo)柱的兩端通過(guò)過(guò)渡配合分別與上下梁相連，而在兩梁之間，裝有導(dǎo)向套的活動(dòng)梁在上面上下移動(dòng)，且導(dǎo)柱與導(dǎo)向套之間為間隙配合，則要求導(dǎo)柱上面該段的表面粗糙度應(yīng)為 ，同時(shí)在導(dǎo)柱與上下梁配合的地方，要求用來(lái)連接并固定上下梁，則在導(dǎo)柱與上下梁相接觸的地方，為使導(dǎo)柱垂直于上下梁，應(yīng)使導(dǎo)柱上的該兩平面的粗糙度為 ，而對(duì)于其他表面的粗糙度達(dá)到 就能滿(mǎn)足要求。5. 為了提高零件表面耐磨性或耐腐蝕性而安排的熱處理工序以及以裝飾為目的而安排的熱處理一般都放在工藝過(guò)程的最后。3. 為了改善材料的力學(xué)物理性質(zhì)，半精加工之后，精加工之前長(zhǎng)安排等熱處理工序。（二） 熱處理工序及表面處理工序的安排1. 為了改善切削性能而改變的熱處理工序（如退火、正火、調(diào)質(zhì)），應(yīng)安排在切削加工前。第5章 典型零件的加工工藝編寫(xiě)工藝卡就是要確定該零件的加工工藝路線(xiàn)，在制定工藝路線(xiàn)時(shí)主要應(yīng)考慮的