freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

沖壓模具結(jié)構(gòu)畢業(yè)設(shè)計(參考版)

2025-06-29 05:54本頁面
  

【正文】 Plastic materials as possible, bright with the greater fault less, while Burr has also increased fillet.The main ponents punching die Diefour ponents: onBlock, underBlock, . Case. Model does not include: 1) rearguided model planes, not a smooth sliding from top to bottom, 3 to feed, suitable for small pieces of salt into. 2)I. the middle: a smooth sliding from top to bottom, wide application, can only be oneway feed. 3)I. angle: the steady decline, vertical and horizontal feed, suitable for large production. 4) 4I.:oriented high accuracy, smooth, for large parts or special highprecision punching the workpiece. Dieinstalled to prevent misuse when the main turn 180 degrees, with the exception of reardieguided, will die in twosets lead the guidedsize in diameter cause, a difference of 2 ~ 5 MM. 5)Ball I. 1, Die Block: standard parts, materials, iron HT2547, A3, A5 requires adequate and stiffness. Dimension determination: 1) graphics, die in diameter than the foreign ministers of the 30 ~ 70 mm. 2) rectangle, the length of the die than the length of the 40 ~ 70 mm. Width and die the same or slightly larger than needed for the guidedguided set aside sufficient installation location. 3) die on the stalkBlock, do not have to stay solid for the installation of clips from the Boss, its shape can be relatively narrow. Blockwidth: 1, Die Block: Hs = Hx = (1 ~ ) Ha One Hs die on the thickness of Block Hx underseat thickness Ha die thickness Block on the thickness of parable underBlock, slightly thin 2, guided and guidedsets: the Senate on the 20th of carbon steel fire front. HRC58 ~ 62 Carburizing of ~ mm. I. Introduction setswith the gap with size: from Tuaoestablished between the precision. 1) t gap between the lessTuao determine the 。 Stamping production requirements of a greater punch with bright, the ruler of the region to reduce the width of fault. Section by blanking the quality of the different conditions and different, such as: Cutting Edge space, edge shape, cutting edges of the punching power, lubrication, sheet metal quality (surface quality), sheet metal type (performance). 4 Burr area have cracked when they have a microburr. Third, features and material (sheet metal materials) of plastic: 3 fault tear caused by the rough surface and dull, with a taper. 2 have a bright band on the stage of plastic deformation, a crosssection smooth formation, is the best quality of the section. 1 with the collapse of angle from the main stage of a single deformation of the collapse of the initial angle, driven edge plastic deformation stage. The second stage of plastic deformation, forcing the strength beyond the limit, a broken crack. When the punch to the pressure, the pressure increased, the stress within the material also will be increased, the stress within the material to yield the limit when it entered the plastic deformation stage. At this stage in the punch squeeze into the material with the depth gradually increase, the extent of plastic deformation is also gradually increasing. Office space on the edge because of the existence of internal stress and the moment have increased, so that deformation zone material hardening intensifying, near the edge of the material due to stress and stress on the role of microcracks began to appear, at this time, Blanking deformation force also reached the maximum. The emergence of microcracks that began destruction of materials, plastic deformation stage has ended. And a sheet of bright vertical band and the initial Burr. The third stage separation stage microfracture cracks continued to expand in the material extension of coincidence, the fracture separation. Punch continues to decline, has generated, the microcracks under growing internal extension to the material, when, under the crack met coincidence, off a rough start from the fault zone, when the punch Zaiwang decline, Chong Some dieout of the hole, thus, the pickup punch to plete the whole process of blanking. Taper with a rough and the beginning of the fault zone Burr longer. Second, blanking of the general section features: The initial collapse Kok Kok permanent collapse Blanking Die, Here39。附錄一The basic concept of stamping dieClassification of punching die 1, Die work process: 我將時刻銘記老師們的諄諄教誨來鞭策激勵自己,在今后的學(xué)習(xí)和工作中開拓創(chuàng)新、努力進取,以優(yōu)異的成績來回報老師的培養(yǎng)教導(dǎo)之恩。同時,特別感謝導(dǎo)師。在這四年里有老師的無私指導(dǎo)以及同學(xué)的熱心關(guān)懷,我學(xué)到了很多的東西。 沖孔凸模加工工藝產(chǎn)品型號零件號零件名稱材料牌號備料規(guī)格每毛坯重量材料消耗定額毛坯種類沖孔凸模T10車間名稱共序號工序名稱及內(nèi)容機床名稱編號工具名稱刀具夾具量具1鋸床2加工中心熱處理4調(diào)質(zhì)HRC606545磨下平面至115磨床日期工人代表日期審核者日期批準者標記更改原因及內(nèi)容更改者參考文獻[1] 張鼎承主編 《沖壓模具手冊》 機械工業(yè)出版社 1996年6月[2] 鐘毓斌主編 《沖壓工藝與模具設(shè)計》 機械工業(yè)出版社 2000年5月[3] 楊慧智主編 《工程材料》 機械工業(yè)出版社 2000年10月[4] 許發(fā)樾主編 《模具實用叢書》 機械工業(yè)出版社 1999年6月[5] 姜奎華主編 《沖壓模具工藝與模具設(shè)計》 機械工業(yè)出版社 1998年5月[6] 吳兆祥主編 《模具材料及表面處理》 機械工業(yè)出版社 2000年4月[7] 黃云清主編 《公差配合與測量技術(shù)》 機械工業(yè)出版社 2001年3月[8] 吉繼賢主編 《機械工程基礎(chǔ)》 中國建材工業(yè)出版社2000年5月[9] 《沖模設(shè)計手冊》編寫組 《沖模設(shè)計手冊》 機械工業(yè)出版社 2001年1月[10] 模具實用技術(shù)叢書編委會《沖模設(shè)計應(yīng)用實例》機械工業(yè)出版社 2002年3月[11] The basic concept of stamping die , , , , , ,2001[12] Journal of Electrostatics , Peter , Heidi SchrecuderGibson, Phillip Gibson,2003致 謝在兩年的基礎(chǔ)課以及專業(yè)課的學(xué)習(xí)中,讓我感受到了學(xué)習(xí)是無止境的和知識的重要性。 上模座板加工工藝產(chǎn)品型號零件號零件名稱材料牌號備料規(guī)格每毛坯重量材料消耗定額毛坯種類上模座HT200車間名稱共序號工序名稱及內(nèi)容機床名稱編號工具名稱刀具夾具量具1下料B=568mmL=810mmh1=75mm采購2畫線2XΦ604XФ15Φ62Ф71Φ107鉗工3加工2XΦ604XФ15Φ62Ф71Φ107鉆床熱處理4 淬火HRC54585磨下平面至75磨床日期工人代表日期審核者日期批準者
點擊復(fù)制文檔內(nèi)容
畢業(yè)設(shè)計相關(guān)推薦
文庫吧 www.dybbs8.com
備案圖鄂ICP備17016276號-1