連接腳沖壓模具設計-級進模含24張CAD圖

連接腳沖壓模具設計-級進模含24張CAD圖,連接,沖壓,模具設計,級進模含,24,cad 連 接 腳 沖 壓 模 具 設 計THE STAMPING DIE DESIGN OF CONNECT FOOT PIECES 摘 要連接腳件是一種需要大量生產的零件。為了提高加工精度和生產效率，需要設計一部模具來改善它的加工情況。本課題設計為一連接腳件的冷沖壓模具設計，根據設計零件的材料、尺寸、生產要求等等，首先進行零件的工藝性分析，確定沖裁工藝方案及模具結構方案、進而通過工藝設計計算，確定排樣的方案以及板料的切割，計算沖裁力、彎曲力、拉伸力，確定壓力中心，計算凸凹模刃口尺寸及公差，初選壓力機，設計并選取零部件，進行校核，繪制模具裝配草圖。其中在結構設計中，主導對凸模、凹模、凸模固定板、定位零件、模架、緊固件進行了設計，并且在結構設計的同時對部分零部件進行加工工藝分析，完成這篇畢業(yè)設計。關鍵詞：連接腳件；冷沖壓 ； 裝配圖； 工藝分析AbstractPin member is needed to mass production of parts. In order to improve the machining accuracy and efficiency, to design a mold to improve its processing conditions. This topic designed as a pin member of cold stamping die design, parts of the material according to the design, dimensions, manufacturing requirements, etc., for the first part of the process of analysis to determine the blanking process solutions and mold structure of the program, and then through the process design calculations, programs and determine nesting sheet metal cutting, punching calculation, bending, tensile strength, determined punching center, computer punch blade dimensions and tolerances, primaries press, and select components designed for school nuclear, mold assembly drawing sketches. Which in the structural design, the dominant right punch and die, punch fixed plate, positioning parts, mold, fasteners were designed, and in the structural design of components for processing on the part of both process analysis, the completion of this graduation.Key words: Pin field; cold stamping; assembly drawing; Process Analysis目 錄第一章 概述 1第一節(jié) 畢業(yè)設計內容和要求 .2第二節(jié) 設計任務 .2第二章 制件的工藝性分析 .4第一節(jié) 材料性能 .4第二節(jié) 工藝性能 .4第三章 模具整體方案確定 .6第一節(jié) 結構確定 .6第二節(jié) 排樣設計 .7第四章 模具沖壓力及壓力中心確定 10第一節(jié) 沖壓力計算 10第二節(jié) 壓力中心 14第五章 凸凹模刃口尺寸計算 .18第一節(jié) 沖裁部分刃口尺寸 18第二節(jié) 彎曲部分刃口尺寸 26第六章 主要零部件的設計 .27第一節(jié) 工藝零件設計 .28第二節(jié) 結構零件設計 .30第三節(jié) 主要零件的強度校核 31第四節(jié) 彈性元件的選用與計算 .32第七章 沖壓設備的選用 34第八章 模具材料的選擇及熱處理 35第一節(jié) 模具材料的選擇 .35第二節(jié) 熱處理 36第九章 模具制造工藝 38第一節(jié) 概述 .38第二節(jié) 電火花成形加工 .38第三節(jié) 電火花線切割加工 38第十章 模具的裝配與調試 .40第一節(jié) 裝配要求 40第二節(jié) 裝配方案 40參考文獻 .42致 謝 .43Heat Treatment of Die and Mould Oriented Concurrent DesignLI Xiong,ZHANG Hong-bing,RUAN Xue—yu,LUO Zhong—hua,ZHANG YanAbstract: Many disadvantages exist in the traditional die design method which belongs to serial pattern. It is well known that heat treatment is highly important to the dies. A new idea of concurrent design for heat treatment process of die and mould was developed in order to overcome the existent shortcomings of heat treatment process. Heat treatment CAD/CAE was integrated with concurrent circumstance and the relevant model was built. These investigations can remarkably improve efficiency, reduce cost and ensure quality of R and D for products.Key words:die design; heat treatment; mouldTraditional die and mould design,mainly by experience or semi—experience，is isolated from manufacturing process.Before the design is finalized，the scheme of die and mould is usually modified time and again，thus some disadvantages come into being,such as long development period,high cost and uncertain practical effect.Due to strong desires for precision,service life,development period and cost,modern die and mould should be designed and manufactured perfectly.Therefore more and more advanced technologies and innovations have been applied,for example,concurrent engineering,agile manufacturing virtual manufacturing,collaborative design,etc.Heat treatment of die and mould is as important as design,manufacture and assembly because it has a vital effect on manufacture，assembly and service life．Design and manufacture of die and mould have progressed rapidly，but heat treatment lagged seriously behind them．As die and mould industry develops，heat treatment must ensure die and mould there are good state of manufacture，assembly and wear—resistant properties by request. Impertinent heat treatment can influence die and mould manufacturing such as over—hard and—soft and assembly．Traditionally the heat treatment process was made out according to the methods and properties brought forward 1by designer． This could make the designers of die and mould and heat treatment diverge from each other，for the designers of die and mould could not fully realize heat treatment process and materials properties，and contrarily the designers rarely understood the service environment and designing thought. These divergences will impact the progress of die and mould to a great extent. Accordingly，if the process design of heat treatment is considered in the early designing stage，the aims of shortening development period，reducing cost and stabilizing quality will be achieved and the sublimation of development pattern from serial to concurrent will be realized．Concurrent engineering takes computer integration system as a carrier,at the very start subsequent each stage and factors have been considered such as manufacturing，heat treating，properties and so forth in order to avoid the error．The concurrent pattern has dismissed the defect of serial pattern,which bring about a revolution against serial pattern．In the present work．the heat treatment was integrated into the concurrent circumstance of the die and mould development，and the systemic and profound research was performed．1 Heat Treatment Under Concurrent CircumstanceThe concurrent pattern differs ultimately from the serial pattern(see Fig．1).With regard to serial pattern，the designers mostly consider the structure and function of die and mould，yet hardly consider the consequent process，so that the former mistakes are easily spread backwards．Meanwhile ，the design department rarely communicates with the assembling，cost accounting and sales departments．These problems certainly will influence the development progress of die and mould and the market foreground． Whereas in the concurrent pattern，the relations among departments are close， the related departments all take part in the development progress of die and mould and have close intercommunion with purchasers．This is propitious to elimination of the conflicts between departments，increase the efficiency and reduce the cost．2Heat treatment process in the concurrent circumstance is made out not after blueprint and workpiece taken but during die and mould designing．In this way，it is favorable to optimizing the heat treatment process and making full use of the potential of the materials．2 Integration of Heat Treatment CAD／CAE for Die and MouldIt can be seen from Fig．2 that the process design and simulation of heat treatment are the core of integration frame．After information input via product design module and heat treatment process generated via heat treatment CAD and heat treatment CAE module will automatically divide the mesh for parts drawing，simulation temperature field microstructure analysis after heat—treatment and the defect of possible emerging (such as overheat,over burning)，and then the heat treatment process is judged if the optimization is made according to the result reappeared by stereoscopic vision technology．Moreover tool and clamping apparatus CAD and CAM are integrated into this system．3The concurrent engineering based integration frame can share information with other branch．That makes for optimizing the heat treatment process and ensuring the process sound．2.1 3-D model and stereoscopic vision technology for heat treatmentThe problems about materials，structure and size for die and mould can be discovered as soon as possible by 3-D model for heat treatment based on the shape of die and mould．Modeling heating condition and phase transformation condition for die and mould during heat treatment are workable，because it has been broken through for the calculation of phase transformation thermodynamics，phase transformation kinetics，phase stress,thermal stress，heat transfer，hydrokinetics etc．For example，3-D heat—conducting algorithm models for local heating complicated impression and asymmetric die and mould，and M ARC software models for microstructure transformation was used．Computer can present the informations of temperature， microstructure and stress at arbitrary time and display the entire transformation procedure in the form of 3-D by coupling temperature field,microstructure field and stress field．If the property can be coupled,various partial properties can be predicted by computer．2.2 Heat treatment process designDue to the special requests for strength，hardness，surface roughness and distortion during heat treatment for die and mould，the parameters including quenching medium type，quenching temperature and tempering temperature and time，must be properly 4selected，and whether using surface quenching or chemical heat treatment the parameters must be rightly determined．It is difficult to determine the parameters by computer fully．Since computer technology develops quickly in recent decades,the difficulty with large—scale calculation has been overcome．By simulating and weighing the property，the cost and the required period after heat treatment．it is not difficult to optimize the heat treatment process．2.3 Data base for heat treatmentA heat treatment database is described in Fig．3．The database is the foundation of making out heat treatment process．Generally，heat treatment database is divided into materials database and process database．It is an inexorable trend to predict the property by materials and process．Although it is difficult to establish a property database，it is necessary to establish the database by a series of tests．The materials database includes steel grades,chemical compositions，properties and home and abroad grades parallel tables． The process database includes heat treatment criterions，classes，heat preservation time and cooling velocity．Based on the database，heat treatment process can be created by inferring from rules．2.4 Tool and equipment for heat treatmentAfter heat treatment process is determined，tool and equipment CAD／CAE system 5transfers the information about design and manufacture to the numerical control device．Through rapid tooling prototype，the reliability of tool and the clamping apparatus can be judged．The whole procedure is transferred by network，in which there is no man—made interference．3 Key Technique3.1 Coupling of temperature，microstructure，stress and propertyHeat treatment procedure is a procedure of temperature-microstructure—stress interaction．The three factors can all influence the property (see Fig．4)．During heating and cooling，hot stress and transformation will come into being when microstructure changes.Transformation temperature-microstructure and temperature—microstructure—and stress-property interact on each other．Research on the interaction of the four factors has been greatly developed,but the universal mathematic model has not been built． Many models fit the test nicely，but they cannot be put into practice．Difficulties with most of models are solved in analytic solution，and numerical method is employed so that the inaccuracy of calculation exists．Even so，comparing experience method with qualitative analysis，heat treatment simulation by computer makes great progress．63.2 Establishment and integration of modelsThe development procedure for die and mould involves design,manufacture，heat treatment，assembly，maintenance and so on．They should have own database and mode1．They are in series with each other by the entity—relation model．Through establishing and employing dynamic inference mechanism ，the aim of optimizing design can be achieved． The relation between product model and other models was built． The product model will change in case the cell model changes．In fact，it belongs to the relation of data with die and mould．After heat treatment model is integrated into the system，it is no more an isolated unit but a member which is close to other models in the system． After searching，calculating and reasoning from the heat treatment database,procedure for heat treatment，which is restricted by geometric model,manufacture model for die and mould and by cost and property，is obtained．If the restriction is disobeyed， the system will send out the interpretative warning．All design cells are connected by communication network．3.3 Management and harmony among membersThe complexity of die and mould requires closely cooperating among item groups．Because each member is short of global consideration for die and mould development， they need to be managed and harmonized．Firstly,each item group should define its own control condition and resource requested,and learn of the request of up-and-down working procedure in order to avoid conflict．Secondly，development plan should be made out and monitor mechanism should be established．The obstruction can be duly excluded in case the development is hindered．Agile management and harmony redound to communicating information， increasing efficiency，and reducing redundancy．Meanwhile it is beneficial for exciting creativity，clearing conflict and making the best of resource．4 Conclusions(1) Heat treatment CAD／CAE has been integrated into concurrent design for die and mould and heat treatment is graphed,which can increase efficiency，easily discover problems and clear conflicts．7(2) Die and mould development is performed on the same platform．When the heat treatment process is made out，designers can obtain correlative information and transfer self-information to other design departments on the platform．(3) Making out correct development schedule and adjusting it in time can enormously shorten the development period and reduce cost．References：[1] ZHOU Xiong-hui，PENG Ying-hong．The Theory and Technique of Modern Die and Mould Design and Manufacture[M]．Shanghai：Shanghai Jiaotong University Press 2000(in Chinese)．[2] Kang M，Park& Computer Integrated Mold Manufacturing[J]．Int J Computer Integrated Manufacturing，1995，5：229-239．[3] Yau H T，Meno C H．Concurrent Process Planning for Finishing Milling and Dimensional Inspection of Sculptured Surface in Die and Mould Manufacturing[J]．Int J Product Research，1993，31(11)：2709—2725．[4] LI Xiang，ZHOU Xiong-hui，RUAN Xue-yu．Application of Injection Mold Collaborative Manufacturing System [J]．JournaI of Shanghai Jiaotong University，2000，35(4) ： 1391-1394．[5] Kuzman K，Nardin B，Kovae M ,et a1．The Integration of Rapid Prototyping and CAE in Mould Manufacturing [J]．J Materials Processing Technology，2001，111： 279—285．[6] LI Xiong，ZHANG Hong—bing，RUAN Xue-yu，et a1．Heat Treatment Process Design Oriented Based on Concurrent Engineering[J]．Journal of Iron and Steel Research，2002，14(4) ： 26—29．文獻出處：LI Xiong,ZHANG Hong-bing,RUAN Xue—yu,LUO Zhong—hua,ZHANG Yan. Heat Treatment of Die and Mould Oriented Concurrent Design[J]. Journal of Iron and Steel Research，2006,13(1):40-43，748模具熱處理及其導向平行設計李雄，張鴻冰，阮雪榆，羅中華，張艷摘要：在一系列方式中，傳統模具設計方法存在許多缺點。眾所周知,熱處理對模具起著非常重要的作用。為了克服模具熱處理工藝存在的缺點，一種新的模具熱處理工藝并行設計方法已經被開發(fā)出來了。熱處理 CAD/CAE 技術是集成了并行環(huán)境和有關模型而建立的。這些調查研究可以顯著提高效率，降低成本，并保證產品質量達到 R 和 D 級。關鍵詞：模具設計；熱處理；模具傳統模具設計主要是依照自身實踐經驗或依照部分實踐經驗，而不是制造工藝。在設計完成之前，模具方案通常要被一次又一次的改進，于是有些缺點便出現，例如開發(fā)時期長，成本高和實際效果不明顯。由于對精確性、使用壽命、開發(fā)期和費用的嚴格要求，先進的模具要求設計和制造得十分完善。因此越來越先進的技術9和創(chuàng)新方法被應用其中，例如并行工程、敏捷制造業(yè)、虛擬制造業(yè)、協同合作設計等。模具的熱處理與模具設計，制造和裝配同樣重要。因為它對模具的制造裝配和使用壽命又及其重要的影響。模具設計與制造發(fā)展十分迅速，但是熱處理發(fā)展卻嚴重滯后它們。隨著模具工業(yè)的發(fā)展，熱處理必須保證模具有良好的制造裝配和磨損耐熱性能。不切實際的熱處理將導致模具材料過硬或過軟，同時影響模具裝配性能。傳統的熱處理工藝是按照設計師提出的方法和特性制作出來的。這樣會使模具設計師和熱處理工藝師意見產生分歧，而模具設計師卻不能充分地了解熱處理工藝和材料的性能，相反熱處理工藝師卻很少了解模具的使用環(huán)境和設計思路。這些分歧將在很大程度上影響模具的發(fā)展。因此，如果把熱處理工藝設計放在設計階段之前，則縮短開發(fā)周期，減少花費和保證質量等目標將會被考慮，而且從串行到并行的發(fā)展模式也將會實現。并行工程是以計算機集成系統作為載體，在開始以后，每個階段和因素都被看作如制造、熱處理、性能等等，以避免出現錯誤。并行模式已經摒除了串行模式的缺陷，由此帶來了一場對串行模式的革命。在當前的工作中，熱處理被集成到了模具開發(fā)的并行環(huán)境中，同時也正在進行這種系統性和深入性的研究。1.熱處理下的并行環(huán)境并行模式與串行模式存在根本的不同（見圖 1） 。對于串行模式，設計者大多考慮的是模具的結構與功能，但很難考慮相關的工藝，以致前者的錯誤很容易蔓延到后面。與此同時，設計本門很少與裝配，預算會計和銷售部門溝通。這些問題當然會影響模具的開發(fā)進度和市場前景。然而在并行模式中，不但以上部門關系聯系密切，所有參加模具開發(fā)的部門都與買家有密切的交流。這有助于協調各部門消除矛盾，提高工作效率，同時降低成本。(a)10(b)(a)串行模式 （b）并行模式圖 1.基于摸具開發(fā)的串行工程與并行工程系統框架示意圖并行環(huán)境下的熱處理工藝不是在方案和工件確定以后，而是在模具設計的時候制定出來的。這樣的話，將有利于優(yōu)化熱處理工藝，充分利用材料。2.模具熱處理 CAD/CAE 一體化從圖 2 中可以看出，熱處理工藝的設計與模擬是一體化模式的核心。在信息輸入產品模塊中后，經熱處理工藝過程產生的熱處理 CAD 和熱處理 CAE 模塊將對于零件圖，熱處理以后模擬溫度場的微觀結構分析和可能出現的缺陷（例如過熱，燒傷）自動劃分網絡，如果優(yōu)化是根據立體視覺技術的結果重新出現，則這項熱處理工藝已經被審核。而且工具與夾具的 CAD 和 CAE 也集成于這種系統中。11圖 2.并行工程熱處理 CAD/CAE 一體化系統框架示意圖以并行工程為基礎的集成模式可以與其它類似模式共享信息。這樣使熱處理工藝得到優(yōu)化，并確保改工藝準確。2.1 采用三維模型和立體視覺技術的熱處理在形成模具的基礎上，材料，結構和尺寸的問題能通過熱處理三維模型盡快發(fā)現出來。在熱處理過程中，模具加熱條件和相變條件是切合實際的，因為通過計算相變熱力、相變動力、相應力、熱應力、傳熱速度、流體動力等已經取得重要突破。例如，能進行局部復雜表面和不對稱模具的三維熱傳導模型計算，和能進行微觀結構轉變的 MARC 軟件模型。計算機能夠在任何時間提交溫度，微觀結構和應力的信息，并通過連接溫度場微觀結構領域和力場來顯示三維形式的全部改變過程。如果再加上這種特性，則各部分性能都能通過計算機預見。2.2 熱處理工藝設計由于對強度和硬度，表面粗糙度和模具熱處理變形的特殊要求，淬火介質的種類、淬火溫度、回火溫度和時間等參數特性必須經過適當的選擇，以及是否使用表面淬火或化學熱處理，這種特性必須準確的制定下來。自從計算機技術在最近幾十年迅速的發(fā)展，難以進行大型計算已經成為過去。通過模擬和仔細考慮熱處理特性，熱處理后的成本和所須時間，這些都并不難優(yōu)化熱處理工藝。2.3 熱處理數據庫熱處理數據庫在圖 3 中描述。數據庫是制定熱處理工藝的基礎。一般來說，熱處理數據庫分為材料數據庫和工藝數據庫。通過材料和工藝來預測特性已成為一種必然的趨勢。盡管很難建立一個特性數據庫，但通過一系列的測試來建立數據庫是必要的。材料數據庫包括材料牌號、化學成分、性能和國內外同級別目錄表。工12藝數據庫包括熱處理標準、種類、保溫時間和冷卻溫度?；跀祿?，熱處理工藝可以通過推理規(guī)則創(chuàng)造出來。圖 3.熱處理數據庫2.4 熱處理工具和設備在熱處理工藝確定以后，工具及設備 CAD/CAE 系統傳送設計和制造的數值信息來控制裝置。通過快速模具成型，可靠的工具和夾具都能被確定。整個程序通過網絡傳送，不存在任何人為干擾。3.關鍵技術3.1 溫度，微觀結構，應力和特性的聯系熱處理程序是一個溫度，微觀結構和應力互相作用的程序。三方面都能影響材料特性（見圖 4） 。在加熱和冷卻期間，當微觀結構轉變時熱應力和相變遲早會出現。微觀結構溫度相變和溫度－微觀結構－應力特性相互影響。對相互作用的四個因素的調查已經取得很大的發(fā)展，但普通的數學模型還沒有建立。許多模型能很好的滿足測試結果，但不能投入到實踐當中。大部分模型的難點是用分析的方法處理的，同時數值方法也運用了，導致存在不準確的計算。13圖 4.熱處理工藝圖解即使如此，把經驗方法與定性分析相比較，通過計算機來進行熱處理模擬取得了很大的進展。3.2 模型的建立和融合在模具的開發(fā)過程中，涉及到設計、制造、熱處理、裝配、維修等。它們應該有自己的數據庫和模型。它們通過事物的內在聯系建立模型，互相串聯起來，盡管建立和運用動態(tài)推理機制，但其目的在于完成優(yōu)化設計。產品模型和其它模型的聯系已被建立。如果細小組織模型發(fā)生改變，則產品模型也將改變。事實上，它屬于數據庫與模具之間的聯系。當熱處理模型集成到系統以后，它已不再是一個孤立的單位，而是一個部分，同時在系統中接近其它模型。在搜查后，熱處理數據庫的計算和推理能力，熱處理程序都被幾何模型，模具制造模型和預算所限制，這是通行的。如果這種限制不服從，系統會發(fā)出解釋性的警告。所用設計的細小組織都是通過互連網連接的。3.3 各部分之間的管理和協調復雜的模具需要其中各項目組之間密切合作。因為考慮到模具的開發(fā)，各部分都存在缺點，它必須得到管理和協調。首先，各項目組應該確定其本身的控制條件和資源要求，同時了解不同環(huán)境下的工作程序，以避免發(fā)生沖突。其次，要提出開發(fā)計劃和建立監(jiān)控機制。如果開發(fā)受到限制則可逐步排除。敏捷管理和協調有助于交流信息，提高效率和減少材料。同時這有利于激發(fā)人的創(chuàng)造力，消除阻礙和制定出最好的方法。4.總結⑴熱處理 CAD/CAE 技術已被集成到模具并行設計中去，同時熱處理已被制成圖表，這有利于提高效率，較易發(fā)現問題并解決問題。⑵模型的開發(fā)已在同一個平臺運行。在這個平臺中，當熱處理工藝制定出來后，設計人員可獲得相關信息和轉讓部分信息到其它設計部門。⑶制定出正確的開發(fā)計劃并按時調整可以極大縮短開發(fā)周期和降低成本。14文獻出處：李雄，張鴻冰，阮雪榆，羅中華，張艷.模具熱處理及其導向平行設計[J]. 鋼鐵研究學報英文版，2006，13（1）:40-43，74