冲孔落料毕业的设计.doc

目 录 前言 第一章 零件的工艺性分析前言 模具是工业生产中使用极为广泛的基础工艺装备。在汽车、电机、仪表、电器、电子、通信、家电和轻工等行业中，60%~80%的零件都要依靠模具成形，并且随着近年来这些行业的迅速发展，对模具的要求越来越迫切。精度要求越来越高，结构也越来越复杂，用模具生产制件所表现出来的高精度、高复杂性、高一致性、高生产效率和低消耗，是其他加工制造方法所不能比拟的。模具生产技术的高低，已成为衡量一个国家产品的制造水平的重要标志。 目前，国内模具工业发展很快，其产值已超过机床工业的产值。我国模具工业作为一个独立的新型的工业，正处于飞速发展阶段，已成为国民经济的基础工业之一，其发展前景十分广阔。据预测，未来我国将成为世界的制造中心，这更加给模具工业带来前所未有的发展机遇和空间。但由于我国模具工业起步较晚，底子薄“九五”期间虽有较快发展，但与发达国家相比，差距还相当大。许多模具还需要进口，模具制造高级 人才也供不应求。为进一步加快我国模具工业的发展，基本任务之一就是加快人才的培养，普及先进的模具设计与制造技术，培养模具专业的高级人才。 为满足模具制造业对技术工人的需求，很多职业技能培训学校都开设了模具制造相关专业，而目前我国模具制造工还没有成为独立的专业工种，还没有统一的模具制造专业教学大纲和教材，也没有统一的技能鉴定标准，各学校和企业都只能在摸索中自行组织安排，这种状况显然不利于该专业的发展和人才培养的规范性。 三百六十行，各行各业对从业人员都有自己特有的职业技能要求。从业人员必须熟练掌握本行业、本岗位的职业技能，具备一定的包括职业技能在内的职业素质，才能胜任工作，把工作做好，为社会做出应有的贡献，实现自己的人生价值，在激烈的市场竞争中立于不败之地。 reface Tooling is widely used in industrial production based process equipment. In the automobile, motor, instrument, electrical appliances, electronics, communication, electrical appliances and light industries, 60% ~ 80% of parts depends on that of die forming, and recent years, with the rapid development of the industry, to request molding tool more and more urgent. Precision demand is higher and higher, the structure is also more and more complex, with mold production parts have generized the high precision, high complexity, high consistency, high efficiency and low consumption, is other processing manufacturing methods far4. Mold production technology, has become the discretion to measure a countrys products manufacturing levels of important symbol. At present, the domestic mould industry develops fast, its 5 output value has exceeded the value of the machine tool industry. Our mould industry as an independent type of industry, is in rapid development stage, has become one of the foundation of the national economy industry and its development prospect. According to the forecast future, our country will become the worlds manufacturing center, this more to mould industry has brought unprecedented opportunities for develop