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中被大学分校毕业设计 - 1 - 外文原稿: in he is a to 0s 0 to 0s, of to In of is by an It is to to to of a of is a a of to on in is to to is 0 to to in of 北大学分校毕业设计 第 - 2 - 页 共 16 页 of of In 0% of to 70%is to to an of to go by to in in in P& M 一 in of it of to a is to of to of in to a 中北大学分校毕业设计 第 - 3 - 页 共 16 页 of in of of as to in in in or is to to 1/10, is 1/5. to in RP in of to be to of of to P is an of to of of is a LS of in 北大学分校毕业设计 第 - 4 - 页 共 16 页 he of of is to of of of to 000 5000 of is a to of is to is a is a of be to on a in of is of of of is by is to as to its 北大学分校毕业设计 第 - 5 - 页 共 16 页 on an 二 , in of he of is to of is or of OM in to up to of is of to of is in in as 000 P of of to up to in in in of as to be by a 中北大学分校毕业设计 第 - 6 - 页 共 16 页 at is is is , is to be of 2 he of to is (1) he be by . as to its a is to up in (2) ry in in to to on to to to s. (3) f in or 北大学分校毕业设计 第 - 7 - 页 共 16 页 at on of (4) of to to of is (5) in he to to in of of to to (6) to to he be by be 380V 12中北大学分校毕业设计 第 - 8 - 页 共 16 页 300A .6 s .8 s of to as to so of to 三 in in in he of to be in of a to if 北大学分校毕业设计 第 - 9 - 页 共 16 页 is by in to in of to be in in on in in of of of In of in , to It is to in a . of 1. f of is 000 s 5000 in an to 100 in is or is an or of to 北大学分校毕业设计 第 - 10 - 页 共 16 页 to to in to up to 2. in a of a in a is to a P of in in in 000 a P& to to a a to on a P, as 3 北大学分校毕业设计 第 - 11 - 页 共 16 页 SP of a in in or of to to or of a to to to a to to to to in s to to in to a in in 北大学分校毕业设计 第 - 12 - 页 共 16 页 in a of At in , of to in to of of be to of a , is 1/5, in on a in 译文: 注塑模快速原型制造 传统制造业的战略是规模效益第一,二十世纪八十年代提出价格和质量第一,九十年代以来,已发展为市场响应第一。在制造业日趋国际化的状况下,缩短产品开中北大学分校毕业设计 第 - 13 - 页 共 16 页 发周期和减少开发新产品投资风险,成为企业赖以生存的关键。 近年来,制造业市场的制造战略重点正在发生从成本与质量到时间与响应的重大转移。快速将多样化的产品推向市场是制造商把握市场先机而求生存的重要保障,快速响应制造已成为国际研究的热点,应运而生的快速成形 /快速制模 /快速制造技术为企业提高竞争力提供了一种先进的手段。该技术是基于材料累加成形的一种高新制造技术 ,被认为是 20 世纪制造领域的一次革命性突破,可制造注塑模、压铸模、冲压模等各类精密复杂模具,目前已广范应用于汽车、航空航天、船舶、家电、工业设计、医疗、建筑、工艺品制作以及儿童玩具等领域,并且随着这一技术本身的不断 发展和完善,其应用范围将不断拓广。 在汽车、家电制造业中,模具成形零件占到了制造工时的 50% 70%。模具制造是制约我国汽车、家电、轻工等行业发展的瓶颈和关键,随着快速成型软硬件设备与快速成型材料的不断发展和完善,快速原型件的强度和精度得到不断的提高,快速成型技术已经逐渐地深入到快速模具制造领域,基于快速成型方法制造各类简易经济快速模具已成为 应用的热点问题。 一、模具快速制造 虽然快速成形技术问世时间不长 ,但由于它对制造业带来的巨大效益使得这一技术的应用日益广泛,特别是给模具的设计 与制造带来了一次飞跃。快速原型技术可精确制作模具的型心和型腔,也可直接用于注射过程制作塑料样件,以便发现和纠正出现的错误。由于快速原型制造这一新技术的应用 ,使模具的设计与制造逐步趋向于数字化、快速化,使模具制造在缩短周期,降低成本的进程中,大大前进了一步。 快速制模技术大都是依据快速成型制作的实体模型即样模 (母模 )采用拷贝方式(如金属喷涂、电镀、复合材料浇注、精铸等 )来快速制造模具主要工作零件 (凸、凹模或模腔、模芯 )的,其制造周期一般为传统的数控切削方法的 1/5 1/10,而成本却仅为其 1/3 1/5。 根据模具材料、生产成本、 型的材料、生产批量、模具的精度要求已开发出多种多样的工艺方法。目前的快速制模方法大致有间接制模法和直接制模法,基于速制造模具
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