3412 手機(jī)電池充電器外殼注塑模模具設(shè)計(jì)

3412 手機(jī)電池充電器外殼注塑模模具設(shè)計(jì),手機(jī)電池,充電器,外殼,注塑,模具設(shè)計(jì) 河南理工大學(xué)萬(wàn)方科技學(xué)院本科畢業(yè)設(shè)計(jì)（論文）開題報(bào)告題目名稱 手機(jī)電池充電器外殼注塑模模具設(shè)計(jì)學(xué)生姓名 湛曉峰 專業(yè)班級(jí) 08 機(jī)制 2 班 學(xué)號(hào) 0828070106一、 選題的意義和目的：1、意義：模具制造技術(shù)迅速發(fā)展，已成為現(xiàn)代制造技術(shù)的重要組成部分。如模具的CAD/CAM 技術(shù)，模具的激光快速成型技術(shù)，模具的精密成形技術(shù)，模具的超精密加工技術(shù)。注射模是生產(chǎn)中必不可少的工藝裝置，注射模設(shè)計(jì)過程中涉及機(jī)械、材料、力學(xué)、工藝、機(jī)構(gòu)等各種專業(yè)知識(shí)。通過手機(jī)充電器注射模設(shè)計(jì)，可以綜合運(yùn)用大學(xué)四年所學(xué)習(xí)的各種知識(shí)，是對(duì)所學(xué)知識(shí)的一次檢驗(yàn)，也是工作前夕的實(shí)際工作一次演練。通過本次畢業(yè)設(shè)計(jì)，使自己掌握注射模具設(shè)計(jì)與制造，提高自己綜合運(yùn)用各種知識(shí)的能力。目前世界模具市場(chǎng)供不應(yīng)求，模具的主要出口國(guó)是美國(guó)，日本，法國(guó)，瑞士等國(guó)家。中國(guó)模具出口數(shù)量極少，但中國(guó)模具鉗工技術(shù)水平高，勞動(dòng)成本低，只要配備一些先進(jìn)的數(shù)控制模設(shè)備，提高模具加工質(zhì)量，縮短生產(chǎn)周期，溝通外貿(mào)渠道，模具出口將會(huì)有很大發(fā)展。研究和發(fā)展模具技術(shù)，提高模具技術(shù)水平，對(duì)于促進(jìn)國(guó)民經(jīng)濟(jì)的發(fā)展有著特別重要的意義。2、目的：為了綜合運(yùn)用大學(xué)四年所學(xué)知識(shí)，并進(jìn)一步的鍛煉自學(xué)能力、查閱文獻(xiàn)能力、計(jì)算機(jī)繪圖能力、分析能力等，特選取了手機(jī)充電器注塑模具設(shè)計(jì)。在設(shè)計(jì)過程中用到了模具設(shè)計(jì)，機(jī)械原理，機(jī)械工程材料，工程制圖等專業(yè)知識(shí)，是理論與實(shí)際的結(jié)合。2二、 國(guó)內(nèi)外研究綜述：做為高分子材料的塑料，由于原料豐富、制造方便、加工容易、質(zhì)地優(yōu)良、輕巧耐用、用途廣泛和投資效益顯著等種種優(yōu)點(diǎn)，目前在世界上的體積產(chǎn)量已經(jīng)趕上和超過了鋼鐵，成為人類使用的主要材料。隨著信息化的時(shí)代的來(lái)臨，手機(jī)充電器已經(jīng)成為人民日常生活的必須品，而手機(jī)充電器的美觀，精巧，耐用等一系列的問題就集中在手機(jī)的設(shè)計(jì)和制造這個(gè)環(huán)節(jié)，這一個(gè)環(huán)節(jié)設(shè)計(jì)的好壞直接影響著其銷售、使用情況。而手機(jī)充電器的模具設(shè)計(jì)正好能夠很好的解決這個(gè)問題。我國(guó)模具行業(yè)近年來(lái)發(fā)展很快，據(jù)不完全統(tǒng)計(jì)，目前模具生產(chǎn)廠點(diǎn)共有 2 萬(wàn)多家，從業(yè)人員約 50 萬(wàn)人，全年模具產(chǎn)值約 360 億元，總量供不應(yīng)求，出口約 2 億美元，進(jìn)口約 10 億美元。當(dāng)前，我國(guó)模具行業(yè)的發(fā)展具有下特征:大型、精密、復(fù)雜、長(zhǎng)壽命中高檔模具及模具標(biāo)準(zhǔn)件發(fā)展速度快于行業(yè)總體發(fā)展水平；塑料模和壓鑄模成比例增長(zhǎng)；專業(yè)模具廠家數(shù)量及其生產(chǎn)能力增加較快；“三資”企業(yè)及私營(yíng)企業(yè)發(fā)展迅速；股份制改造步伐加快等，從地區(qū)分布來(lái)看，以珠江三角洲和長(zhǎng)江三角洲為中心的東南沿海地區(qū)發(fā)展快于中西部地區(qū),南方的發(fā)展快于北方。目前發(fā)展最快、模具生產(chǎn)最集中的省份是廣東和浙江，其模具產(chǎn)值約占全國(guó)總產(chǎn)值的 60%以上。我國(guó)模具總量雖然已位居世界第三，但設(shè)計(jì)制造水平總體上落后于德、美、日、法、意等發(fā)達(dá)國(guó)家，模具商品化和標(biāo)準(zhǔn)化程度也低于國(guó)際水平，所以我國(guó)在模具這個(gè)行業(yè)方面還需要大力加強(qiáng)這個(gè)學(xué)科的基礎(chǔ)設(shè)施建設(shè)。三、 畢業(yè)設(shè)計(jì)（論文）所用的主要技術(shù)與方法：1、在資料和信息獲取過程中進(jìn)行了大量的考察和調(diào)研；2、在設(shè)計(jì)過程中使用了系統(tǒng)分析設(shè)計(jì)、創(chuàng)造性設(shè)計(jì)、相似性設(shè)計(jì)、動(dòng)態(tài)設(shè)計(jì)、機(jī)械可靠性設(shè)計(jì)等方法；3、在繪圖過程中運(yùn)用計(jì)算機(jī)繪圖；4、在外型設(shè)計(jì)中運(yùn)用了人機(jī)工程學(xué)方法，以使人機(jī)環(huán)系統(tǒng)協(xié)調(diào)，相互適應(yīng)。3四、 主要參考文獻(xiàn)與資料獲得情況：1 李建軍，李德群主編 模具設(shè)計(jì)基礎(chǔ)及模具 CAD M機(jī)械工業(yè)出版社，20052 鄧明等編著現(xiàn)代模具制造技術(shù)M化學(xué)工業(yè)出版社，20053 葉久新，王群主編塑料制品成型及模具設(shè)計(jì)M湖南科學(xué)技術(shù)出版社，2005.4 伍先明等編著塑料模具設(shè)計(jì)指導(dǎo)M國(guó)防工業(yè)出版社，2006.5 王建華, 徐佩弦編著，注射模的熱流道技術(shù)M機(jī)械工業(yè)出版社，2006.6 曹宏深，趙仲治 . 塑料成型工藝與模具設(shè)計(jì)M，北京：機(jī)械工業(yè)出版社，19937 屈華昌，伍建國(guó) . 塑料模具設(shè)計(jì)M. 北京： 機(jī)械工業(yè)出版社，19828 李秦蕊. 塑料模具設(shè)計(jì)M. 西安：西北工業(yè)大學(xué)出版社，19889 唐志玉. 大型注射模具設(shè)計(jì)理論基礎(chǔ)M. 模具工業(yè)，198710 中國(guó)機(jī)械工業(yè)協(xié)會(huì) . 塑料模具設(shè)計(jì)與制造M. 機(jī)械工業(yè)出版社，200611 模具實(shí)用技術(shù)叢書編委會(huì). 塑料模具設(shè)計(jì)制造與應(yīng)用實(shí)例M機(jī)械工業(yè)出版社，2002五、 畢業(yè)設(shè)計(jì)（論文）進(jìn)度安排（按周說明） （共 10 周）第一部分：注塑模設(shè)計(jì)相關(guān)資料收集。 （2 周）第二部分：塑件的分析，注塑機(jī)的確定。 （1 周）第三部分；模具設(shè)計(jì)的相關(guān)計(jì)算。 （2 周）第四部分：模具結(jié)構(gòu)設(shè)計(jì)。 （1 周）第五部分：模具凸凹模零件加工工藝、后置處理及計(jì)算機(jī)繪圖。 （3 周）第六部分：評(píng)閱及答辯。 （1 周）六、 指導(dǎo)教師審批意見：4指導(dǎo)教師： 年 月 日 i1外文資料與中文翻譯外文資料：Analysis on The Factors of Impacting on The Life of Stamping DieREN Hai-dongYU LingAbstract：Stamping is a wide range of material processing methods，stamping die is equipment to achieve the important parts of theprocessing，whose life directly afects quality an d cost ofthe productThis article analyzes to its influencing factors，finding a method tosolveproblems，andimprovethelifeof stamping dieKeywords：Samping die ；life ；Infl uencing factoIs the use of stamping presses installed in the die pressure on the material to produce plastic deformation or separation in order to obtain the parts needed for a pressure processing method. In industrial production, especially in household appliances, automotive, aerospace and engineering fields such as instrumentation is widely available. The die is the realization of this important technology components and equipment for processing. Die as a result of a long cycle of production and processing, the use of the high cost of materials, manufacturing costs in product cost of production occupies a significant proportion, therefore, to improve the life of stamping dies is very important. Through the use of molds, for various reasons can not be a reproduction of the red pieces of qualified, could no longer be repaired, which is commonly referred to as die failure. Die life by various forms of limitations expired, common are: wear failure, failure 2deformation, fracture failure and failure, such as bite wounds. Stamping processes, as well as due to different working conditions of the different effects of stamping die failure are many factors, but the same factors may also bring some form of failure. In this paper, an analysis of its influencing factors, possible solutions to the problem in order to achieve the purpose of die life.1 Mold DesignMold design, including structural design and parts design. The structure of mold not only affects the quality of parts produced to determine the productivity of enterprises and processing methods, but also to improve the life of mold also has a key role. Therefore, before designers to make full preparations to meet the production tooling to optimize the structure at the same time.1.1 Parts of Product DesignReasonable product design will help improve the life of mold. If the product has a cusp, or fillet radius is too small, the design of the edge will die due to stress concentration and cracking. Without prejudice to the structure and function of products, we can change the design of some of its unreasonable.1.2 Die Structure DesignReasonable structure can improve the die life. For example, in Die, the direction to improve the convex and concave stamping die in the course of the relative stability, thus ensuring the mold space at a reasonable framework of blanking blanking. And the reasonableness of blanking clearance and stability to improve die life is an important 3measure. Accurate reduced-oriented relationship between the relative movement of the wear and tear of parts and components to avoid the convex, concave die as a result of unreasonable gap a bite injuries and other forms of failure. Particularly in the Fine Blanking Die, the high-precision mold-oriented institutions is to ensure that the structural design of an important guarantee for success. Therefore in order to improve the life of mold, the form must be the right choice and guide precision-oriented. The choice of orientation should be higher than the accuracy of convex and concave mold with precision. For more blanking punch, punch in a number of large difference in diameter, there is a difference and close the case that if a small and a long punch, then easily lead to instability or break. We can punch arranged in Figure 1 (a) ladder-style in order to increase its stiffness. Punching holes for the need to increase the punch guide in order to enhance the strength of punch, which is to ensure the normal work of stamping dies to the premise. Which can increase many-oriented approach, to be used in Figure 1 (b) shown in the front and the entire process-oriented and other-oriented.Figure 1 (a) ladder layout punch 1 (b) punch-orientedAccurate calculation of the process can also increase mold life. Such as discharge power and the calculation of stroke. If we are not allowed to easily spring fatigue fracture or failure. Die on a high degree of calculation, as well as the choice of press and reasonable manner and location-oriented institutions can effectively improve the die life. Modulus of continuity for the design and layout of the ride side of the calculation of size 4is also crucial.1.3 Die gapStamping dies when space is the convex, concave die size difference between the horizontal edge. Gap on the impact of a large die life is a stamping process and die design of an extremely important issue. Convex, concave die gap size of a direct impact on product quality and mold the life space is too large or too small will cause the edge passivation or wear and tear (as shown in Figure 2). Die materials drop to die later, punch to punch prevail, and these two dimensions has been the impact of space. The experimental results show that the thickness of the gap below 2 percent, prone punch damage, space for more than 6%, there had been errors in parts size. Gap in the thickness of 4% 5%, the effect of blanking good stability. Die gap, therefore the correct choice is to ensure that an important way to die life. At present, the choice of space data in addition to investigations, the most by the actual experience.(a) gap is too small (b) a reasonable gap (c) gap is too largeFigure 2 gap on the impact of stampings52 Die ManufacturingMold manufacturing process design is reasonable, to ensure that mold is an important way of life. Most of mold manufacturing parts of the process can be carried out in accordance with the normal, but there are special requirements for spare parts or spare parts for local processing, will need to have some special methods.2.1 Mechanical RoughMaterial machining accuracy of the assembly of the mold affects accuracy, it will directly affect the mold of parallelism, perpendicularity and coaxiality. In addition, the marks left rough, worn, are prone to stress concentration sites, but also occurred in the early fatigue cracks and the local.2.2 Heat TreatmentHeat Treatment in the manufacture of stamping die plays a very important role, in spite of different types and different structure of mold, the use of different steel products, or using different machining and processing of shape, but they need to use heat treatment process to obtain a higher hardness and wear resistance, as well as other mechanical properties required. In general, the die service life and quality of products produced to a large extent depends on the quality of heat treatment processing. Thus, in die manufacturing, and continuously improve the skill level of heat treatment, a reasonable template to improve the performance of internal organization and working methods, it is particularly important. Heat treatment time and temperature is an important factor, because of the time in different temperatures, heat treatment may constitute a different form, the main annealing, normalizing, quenching and tempering, 6and carburizing, nitriding, carbonitriding, etc. For example, in the blanking die, because people punch wedge material is the work of more serious wear and tear parts, so the hardness should be greater in general for the HRC 60 63, die for the HRC 57 60, this kind of hardness than the two , or die punch hardness is higher than the longer die life.3 Die Assembly and DebuggingAssembly is the key to mold production process. A direct impact on the quality of the die assembly of the quality of parts, dies and the life of the state of the technology. Die assembly includes two aspects: (1) good parts of each machining process in accordance with requirements of drawings assembled into a general assembly and assembly; (2) in the assembly process as part of the processing work. Die in the assembly as an example, the technical requirements is to ensure consistency blanking gap and ensure the accuracy of direction-oriented institutions, as well as the movement to ensure that all relevant pieces of die design in accordance with strict technical parameters. This is a debugging tool to ensure a successful and smooth conduct of the production protection, but also to ensure that an important factor in mold life. In recent years, with the development of the production, users are vulnerable to damage parts of the swap request, so that users die at the scene of the rapid replacement of damaged parts. Die before the test mode, it should also be designed in strict accordance with the technical parameters of the model to select press. It is closely related to the length of die life. Press the stiffness, precision, crucial parameters such as tonnage. Press one of the stiffness of stiffness by the bed, transmission stiffness and rigidity of three parts-oriented, if less stiffness, load and unloading end, the die gap, great changes will happen, it will affect the accuracy of stamping parts and mold life. Die after assembly, must be red and adjust 7the test can be used for production. In order to protect the mold, the first time in debugging, it is necessary to pay attention to the use of paper or aluminum, as well as cold-rolled plate red test. To ensure that edge punch die edge into the depth of the scope of a reasonable (usually for a material thickness). Stamping die so red when the level of stress and wear and tear will be minimal, and fully protect the convex and concave mold, increased die life. The purpose of debugging and the task is: to die out not only qualified stampings, security and stability but also put into production use. Should be based on examination of stamping defects, analysis of its causes and try to solve them. Some bending, deep drawing and flanging, etc. so that the deformation of sheet metal dies, stamping parts, when the shape of complex or high accuracy, it is difficult to accurately calculate the deformation of the former size and shape of the rough. For this type of stamping parts, although the relevant references are rough calculation methods and formulas, but the impact of plastic deformation as a result of many factors, calculated from the size and needs of different size. In the actual production in order to obtain more accurate size, often determined through experiments. Red in the test set to adjust the size of blank.4 ConclusionStamping die life impact of a number of factors, from the above analysis we can see from the mold design to the use of the entire process can improve the die life. Practice has proved that the rational design of die structure and the shape of the die using the appropriate manufacturing processes, heat treatment process, so that die in the normal conditions, can increase the mold life.References: 81 Weng its gold. Cold stamping technology M. Beijing: Mechanical Industry Press, 2007. 2 Liu, ZHANG Bao-zhong. Stamping die design and manufacture of M. Beijing: Higher Education Publishing Agency. 2006. 3Xiaopei.wang. Stamping Manual M. Beijing: Mechanical Industry Press, 2006.9中文翻譯：影響沖壓模具壽命的因素分析任海東，于玲摘要：沖壓成形是一種應(yīng)用廣泛的材料加工方法，沖壓模具是實(shí)現(xiàn)零件加工的重要工藝裝備，它的使用壽命直接影響到產(chǎn)品的質(zhì)量和成本。對(duì)模具壽命的影響因素加以分析，找出解決問題的方法，從而達(dá)到提高模具壽命的目的。關(guān)鍵詞：沖壓模具：壽命；影響因素沖壓是利用安裝在壓力機(jī)上的沖模對(duì)材料施加壓力，使其產(chǎn)生分離或塑性變形，從而獲得所需要的零件的一種壓力加工方法。它在工業(yè)生產(chǎn)中，尤其是在家用電器、汽車、航空以及儀器儀表等工程領(lǐng)域獲得廣泛應(yīng)用。而沖模就是實(shí)現(xiàn)這一零件加工的重要工藝裝備。由于模具的生產(chǎn)加工周期長(zhǎng)，使用的材料費(fèi)用高，制造成本在產(chǎn)品生產(chǎn)成本中占有相當(dāng)大的比例，因此，提高沖壓模具的壽命是非常重要的。模具經(jīng)過使用，由于種種原因不能再生產(chǎn)出合格的沖件，也不能再修復(fù)，這種情況一般稱為模具失效。模具壽命受各種失效形式的限制，常見的有：磨損失效、變形失效、斷裂失效及啃傷失效等。由于沖壓工序不同以及工作條件的不同，影響沖壓模具失效的因素很多，而同一種因素也可能帶來(lái)幾種失效形式。本文對(duì)其影響因素進(jìn)行分析，找出解決問題的方法，從而達(dá)到提高模具壽命的目的。1 模具設(shè)計(jì)模具設(shè)計(jì)包括結(jié)構(gòu)設(shè)計(jì)和零部件設(shè)計(jì)。模具的結(jié)構(gòu)不僅能影響到所10生產(chǎn)零件的質(zhì)量，決定企業(yè)的生產(chǎn)效率和加工方式，而且對(duì)提高模具的使用壽命也具有關(guān)鍵的作用。因此設(shè)計(jì)者在設(shè)計(jì)之前，要做好充分的準(zhǔn)備工作，在滿足生產(chǎn)的同時(shí)盡可能優(yōu)化模具結(jié)構(gòu)。11 零件產(chǎn)品設(shè)計(jì)合理的產(chǎn)品設(shè)計(jì)有利于提高模具的壽命。如果產(chǎn)品具有尖角，或圓角半徑太小，所設(shè)計(jì)的凹模刃口就會(huì)因應(yīng)力集中而開裂。在不影響產(chǎn)品結(jié)構(gòu)和功能的前提下，我們可以改變其一些不合理的設(shè)計(jì)。12 模具結(jié)構(gòu)設(shè)計(jì)合理的結(jié)構(gòu)可以提高模具的壽命。例如在沖裁模中，導(dǎo)向機(jī)構(gòu)提高了凸、凹模在沖壓過程中的相對(duì)穩(wěn)定性，從而保證模具在合理的沖裁間隙范圍內(nèi)進(jìn)行沖裁。而沖裁間隙的合理性及穩(wěn)定性正是提高模具壽命的重要措施。精確的導(dǎo)向減少了有相對(duì)運(yùn)動(dòng)關(guān)系的零部件的磨損，避免了凸、凹模由于間隙不合理出現(xiàn)“啃傷” 等失效形式。尤其在精密沖裁模中，高精度的導(dǎo)向機(jī)構(gòu)是確保模具結(jié)構(gòu)設(shè)計(jì)成功的重要保障。因而為了提高模具的壽命，必須正確選擇導(dǎo)向形式和導(dǎo)向精度。導(dǎo)向精度的選擇應(yīng)高于凸、凹模的配合精度。對(duì)于多凸模沖裁，在幾個(gè)凸模直徑相差較大，相距又很近的情況下，如果小凸模細(xì)小而又較長(zhǎng)，則容易造成失穩(wěn)或折斷。我們可以把凸模布置成如圖1(a) 階梯式的，以增加其剛度。對(duì)于小孔沖裁，必須增加對(duì)凸模的導(dǎo)向，以提高凸模的強(qiáng)度，這是保證沖壓模具能正常工作的前提。其中能增加導(dǎo)向的方法很多，可采用如圖1(b)所示的前端導(dǎo)向和全程導(dǎo)向等。11準(zhǔn)確的工藝計(jì)算也可以提高模具的壽命。如卸料力及行程的計(jì)算。若計(jì)算不準(zhǔn)，容易造成彈簧的疲勞斷裂或失效。對(duì)合模高度的計(jì)算以及壓力機(jī)的選擇，合理的定位方式及導(dǎo)向機(jī)構(gòu)等，都可以有效地提高模具的使用壽命。對(duì)于連續(xù)模排樣的設(shè)計(jì)和搭邊尺寸的計(jì)算也至關(guān)重要。13 模具間隙模具間隙是指沖壓時(shí)凸、凹模刃口橫向尺寸之差。間隙對(duì)模具壽命的影響很大，是沖壓工藝與模具設(shè)計(jì)中的一個(gè)極其重要的問題。凸、凹模間隙的大小直接影響產(chǎn)品的質(zhì)量和模具的使用壽命，間隙過大或過小都會(huì)使刃口鈍化或磨損(如圖2所示)。沖裁模中落料一般以凹模為準(zhǔn)，沖孔以凸模為準(zhǔn)，而這兩個(gè)尺寸又受到間隙的影響。實(shí)驗(yàn)表明，間隙在板厚的2以下時(shí)，凸模容易發(fā)生損壞，間隙在6以上時(shí)，制件尺寸出現(xiàn)誤差。間隙在板厚4 5時(shí)，沖裁穩(wěn)定效果好。因此正確選擇模具間隙，是保證模具壽命的重要途徑。目前，間隙的選擇除了查資料以外，大部分靠實(shí)際經(jīng)驗(yàn)獲得。122 模具制造模具制造工藝設(shè)計(jì)的合理性，也是保證模具壽命的重要途徑。大部分模具零件的制造可以按正常的工藝進(jìn)行，但對(duì)有特別要求的零件或零件局部加工，就需要有一定特殊的方法。21 機(jī)械粗加工材料的加工精度對(duì)模具的裝配精度有很大的影響，將直接影響模具的平行度、垂直度和同軸度。另外，粗加工留下的刀痕、磨痕，都是容易產(chǎn)生應(yīng)力集中的部位，也是早期產(chǎn)生裂紋和發(fā)生疲勞的地方。22 熱處理熱處理在沖壓模具的制造中起著很重要的作用，盡管不同類型及不同的結(jié)構(gòu)模具，使用不同的鋼材，或采用不同的機(jī)械加工及加工成形，但都需要用熱處理的加工方法，使其獲得較高的硬度和耐磨性，以及其13他所要求的力學(xué)性能。一般來(lái)說，沖模的使用壽命及生產(chǎn)出來(lái)的產(chǎn)品質(zhì)量，在很大程度上取決于熱處理加工質(zhì)量因此，在沖模制造中，不斷提高熱處理的技術(shù)水平，合理的改進(jìn)模板內(nèi)部組織和性能的工作方法，就顯得格外的重要。時(shí)間和溫度是熱處理的重要因素，由于時(shí)間溫度的不同，可構(gòu)成不同的熱處理形式，其主要有退火、正火、淬火、回火和滲碳、滲氮、碳氮共滲等。比如在沖裁模中，由于凸模楔人材料，是磨損比較嚴(yán)重的工作零件，所以其硬度應(yīng)大些，一般為 HRC 6063，凹模為 HRC 5760，這樣比兩者硬度樣，或凹模硬度高于凸模的模具壽命更長(zhǎng)一些。3 模具裝配及調(diào)試裝配是模具生產(chǎn)中的關(guān)鍵工序。沖模裝配質(zhì)量直接影響制件的質(zhì)量、沖模的技術(shù)狀態(tài)和使用壽命。沖模的裝配工作包括兩方面的內(nèi)容：(1)將每個(gè)加工好的零件按圖紙工藝要求裝配成組合件及總體裝配；(2)在裝配過程中進(jìn)行的一部分加工工作。以沖裁模的裝配為例，其技術(shù)要求是保證沖裁間隙一致性，保證導(dǎo)向機(jī)構(gòu)的導(dǎo)向精度，以及保證各相關(guān)運(yùn)動(dòng)件能夠按照模具設(shè)計(jì)的技術(shù)參數(shù)嚴(yán)格進(jìn)行。這是保證模具調(diào)試成功及生產(chǎn)能夠順利進(jìn)行的保障，也是確保模具壽命的重要因素。近年來(lái)，隨著生產(chǎn)的發(fā)展，用戶對(duì)易損壞零件提出了互換要求，以便用戶在現(xiàn)場(chǎng)對(duì)模具損壞零件的迅速更換。模具在試模前，還應(yīng)該嚴(yán)格按照設(shè)計(jì)的技術(shù)參數(shù)來(lái)選擇壓力機(jī)的型號(hào)。它關(guān)系到模具使用壽命的長(zhǎng)短。壓力機(jī)的剛度、精度、噸位等參數(shù)至關(guān)重要。其中壓力機(jī)的剛度是由床身剛度、傳動(dòng)剛度和導(dǎo)向剛度三部分組成，如果剛度較差，負(fù)載終了和卸載時(shí)，模具間隙會(huì)發(fā)生很大變化，將會(huì)影響到?jīng)_壓件的精度和模具壽命。模具裝配完后，必須經(jīng)過試沖和調(diào)整，才能進(jìn)行生產(chǎn)使用。為了保護(hù)模14具，在第一次調(diào)試時(shí)，要注意利用紙片或鋁片以及冷軋板進(jìn)行試沖。保證凸模刃口進(jìn)入到凹模刃口的深度在合理的范圍內(nèi)(一般為一個(gè)料厚)。這樣模具沖壓時(shí)的沖壓力及磨損程度會(huì)最小，充分保護(hù)了凸、凹模，提高了模具壽命。調(diào)試的目的和任務(wù)是：使沖模不僅能沖出合格的沖壓件，而且能安全穩(wěn)定的投入生產(chǎn)使用。應(yīng)根據(jù)試沖件中出現(xiàn)的缺陷，分析其產(chǎn)生的原因，設(shè)法加以解決。有些彎曲、拉深及翻邊等使板料變形的沖模，當(dāng)沖壓件的形狀復(fù)雜或精度較高時(shí)，很難精確計(jì)算出變形前的毛坯尺寸和形狀。對(duì)于這一類沖壓件，雖然相關(guān)參考資料都有計(jì)算毛坯的方法和公式，但由于影響塑性變形的因素非常多，計(jì)算出來(lái)的尺寸和實(shí)際的需要尺寸是有差別的。在實(shí)際的生產(chǎn)中為了得到較準(zhǔn)確的尺寸，往往通過試驗(yàn)來(lái)確定即在試沖調(diào)整中確定毛坯的尺寸。4 結(jié)論影響沖壓模具壽命的因素很多，從以上分析可以看出從模具設(shè)計(jì)到使用的全過程中，均能提高模具壽命。實(shí)踐證明，合理設(shè)計(jì)模具結(jié)構(gòu)及形狀，采用恰當(dāng)?shù)臎_模制造工藝、熱處理工藝，使模具在正常的條件下工作，均能提高模具的壽命。參考文獻(xiàn)：1翁其金冷沖壓技術(shù)M 北京：機(jī)械工業(yè)出版社，20072劉建超，張寶忠沖壓模具設(shè)計(jì)與制造M北京：高等教育出版社。20063王孝培沖壓手冊(cè)M 北京：機(jī)械工業(yè)出版社，2006