模具专业英语 节选

《模具专业英语》结合高职高专的培养目标以及教学的实际情况，从企业生产实际及岗位需求出发进行设计和编写，在内容上有很强的针对性。全书共有10个单元，每个单元都由专业阅读、专业翻译、模具特性、模具零部件编程、模具维修保养和交际对话等部分组成。书后附有课文参考译文等。《模具专业英语》既可作为高职高专、成人高校、继续教育学院模具、机电一体化等专业的专业英语教材，也可供相关技术人员自学参考。

模具专业英语 相关资料

插图：Moulds separate into at least two halves （called the core and the cavity） to permit the part to be extracted; in general the shape of a part must be such that it will not be locked into the mould. For example, sides of objects typically cannot be parallel with the direction of draw （the direction in which the core and cavity separate from each other）. They are angled slightly; examination of most household objects made from plastic will show this aspect of design, known as drain. Parts that are "bucket-like" tend to shrink onto the core while cooling and, after the cavity is pulled away, are typically ejected using pins. Parts can be easily welded together after molding to allow for a hollow part （like a water jug or doll's head） that couldn't physically be 'designed as one mould.More complex parts are formed using more complex moulds, which may require moveable sections, called slides, which are inserted into the mould to form particular features that cannot be formed using only a core and a cavity, but are then withdrawn to allow the part to be released. Some moulds even allow previously molded parts to be re-inserted to allow a new plastic layer to form around the first part.Traditionally, molds have been very expensive to manufacture; therefore, they were usually only used in mass production where thousands of parts are being produced.Mold automationMolds can be hand operated, semi-automatic or fully automatic.Hand operated molds require an operator to physically remove the mold from the press and disassemble it to remove the molded part. They are'used for very small quantities （1-500 parts） or parts that have undercuts, threads or other complicated features. They have long operating cycles （2-5 minutes or more） and by nature are labor intensive to operate.Semi-automatic molds are typically mounted in the press and require an operator only to perform a specific oper

模具专业英语 作者简介

黄星男，教授，大学本科，吉林省教学名师。目前担任的社会职务有．教育部高等学校高职高专英语类专业教学
指导委员会分会委员，中国职业技术教育委员会教学工作委员会高职英语教学研究会副主任。吉林省外语学会高职
高专分会副会长兼副秘书长。

 2/2   首页 上一页 1 2

外语 大学英语 大学专业英语教材

在线阅读