摘要:由于模具工业的重要性,模具成型工艺在各个工业部门得到了广泛的应用,使得模具行业的产值已经大大超过机床刀具工业的产值.这一情况充分说明在国民经济蓬勃发展的过程中,在各个工业发达国家对世界市场进行激烈的争夺中,越多越多地采用模具来进行生产,模具工业明显地成为技术 经济和国力发展的关键.
因此,要使国民经济各个部门获得高速发展,加速实现社会主义四个现代化,就必须尽快将模具工业搞上去,使模具生产形成一个独立的工业部门,从而充分发挥模具工业在国民经济中的关键的作用.
本论文阐述的是拉手卡子零件冲压模具设计,冲压模具主要包括冲裁模具、弯曲模具、拉深模具、多工位级进模、简易冲模等。本课题的主要任务是完成拉手卡子落料冲孔复合模及弯曲模的设计,具有非常现实的设计意义。复合模是在压力机的一次行程中,在同一工位上完成两道或两道以上的冲压工序。复合模的结构紧凑,冲出来的精度高,适合大批量的生产,但复合模的结构复杂,制造相对困难。
本设计拉手卡子零件冲压模具,凸凹模安装在模具下模座上。倒装复合模废料清理无须二次清理,操作方便安全,生产效率较高。复合模与弯曲模的设计过程大致相似,复合模较弯曲模结构更为复杂。设计上主要是对凸模、凹模和凸凹模的设计,其中主要是其工作部分的尺寸设计,以保证制件的精度和质量要求。
关键词:冲压模具 工艺分析 复合模 弯曲模
Certain automobile element stamping technology analysis and mould design
Abstract: as the importance in the industry of the mould , the shaping craft of the mould is widely used in each industrial department, which makes the output value of the mould trade already exceed the output value of the industry of the lathe and cutter greatly. This situation is fully explained while national economy is vigorous, carry on the world market in fierce contention in each industrially developed country, more and more will adopt mould produce, mould obviously become the key of technological, economy and, national power of development with industry.
So, to make each department of national economy win high-speed development , realize the sociality Four Modernizations with higher speed, it must develop the industry of the mould as soon as possible , make the mould production form an independent industrial department, thus give full play to the key function in national economy of industry .
What this paper explained is pressing craft analysis and mold design of an automobile ear slice, press mould mainly including blanking mould , crooked mould , draw dark mould , many worker location grade enter mould , simple and easy trimming die ,etc. What this text explains is mainly about a slice of blanking of automobile ear washes hole complex model and crooked model design, which have very realistic design meanings. The complex mould finishes two or two processes of pressing of the above on the same worker's location in a journey of the press. The structure of the complex mould is compact, the precision washed out is high, suitable for the production in enormous quantities, especially hole and concentricity of making appearance of one are apt to guarantee , but the structure of the complex mould is complicated, make relative difficulty.
Originally design the slice of automobile ear complex mould of hole adopt the structure of inverting, protruding concave mould installs it on the mould seat of the mould. Inverting the complex mould waste material needn't clear up twice, easy to operate and safe and the production efficiency are relatively high. The design process of complex mould and crooked mould is roughly similar; while the complex mould is more complicated. It is mainly to protruding mould, concave mould and the protruding concave model's design, among them that it is mainly design some size of work, so as to ensure the precision and quality requirement.
Keyword: Stamping Mould Technical Analysis Complex mould Crooked mould
课题研究的主要内容
拉手卡子零件冲压模具设计
原始资料及设计技术要求如下:
1、零件图;
2、零件材料牌号及厚度:Q235,δ1.0;
设计技术要求如下:
1、年生产纲领:100000件;
2、要求外文资料翻译忠实原文
3、要求编制的冲压工艺规程合理
4、要求设计的冲压模具满足加工要求
5、要求图纸设计规范,符合制图标准
6、要求毕业论文叙述条理清楚,设计计算正确,论文格式规范。
课题研究的方案
1、分析冲压件的工艺性
根据设计题目的要求,分析冲压件成型的结构工艺性,分析冲压件的形状特点、尺寸大小、精度要求及所用材料是否符合冲压工艺要求
2、制定冲压件工艺方案
在分析了冲压件的工艺性后,通过可以列出几种不同工艺方案,从产
品质量、生产效率、设备占用情况、模具制造的难易程度和模具寿命高
低、工艺成本、操作方便和安全程度等方面,进行综合分析、比较,然
后确定适合于工厂具体生产条件的最经济合理的工艺方案。
3、确定毛坯形状、尺寸和下料方式。
在最经济的原则下,决定毛坯的形状、尺寸和下料方式,并确定材料的消耗量。
4、确定冲模类型及结构型式。
5、进行必要的工艺计算
6、选择压力机
7、绘制模具总图和非标准零件图。
目录 18000字
1.绪论
1.1 课题研究的目的及意义 ………………………………………… (1)
1.2国内外研究概况及发展趋势…………………………………………(2)
1.3课题研究的主要内容和方案 ………………………………………(3)
1.3.1课题研究的主要内容……………………………………………(3)
1.3.2课题研究的方案 ………………………………………………(4)
1.4研究课题的主要目标和特色…………………………………………(4)
2.拉手卡子冲压复合模设计
2.1拉手卡子冲裁工艺性分析……………………………………………(5)
2.2工件排样与搭边………………………………………………………(7)
2.2.1排样 ……………………………………………………………(7)
2.2.2材料的利用率 …………………………………………………(7)
2.2.3 搭边 ……………………………………………………………(7)
2.3冲裁间隙 …………………………………………………………… (8)
2.3.1冲裁间隙的选取…………………………………………………(9)
2.4冲压力计算……………………………………………………………(9)
2.4.1冲裁力计算………………………………………………………(9)
2.4.2卸料力、推件力和顶出力 ………………………………………(10)
2.5模具压力中心计算 …………………………………………………(11)
2.6凸、凹模刃口尺寸计算 ………………………………………………(12)
2.6.1凸、凹模刃口尺寸公差计算的原则 …………………………(12)
2.6.2凸、凹模刃口尺寸计算的方法…………………………………(13)
2.7复合模凹、凸凹模的结构设计………………………………………(17)
2.7.1凹模………………………………………………………………(17)
2.7.2凸凹模外型结构 ………………………………………………(19)
2.8复合模总体设计与标准零件选用 …………………………………(19)
2.8.1模固定板 ………………………………………………………(20)
2.8.2凸模 ……………………………………………………………(20)
2.8.3 凸模垫板…………………………………………………………(22)
2.8.4定位零件 ………………………………………………………(22)
2.8.5卸料装置…………………………………………………………(24)
2.8.6推件装置…………………………………………………………(27)
2.9模具闭合高度与压力机装模高度的关系……………………………(29)
2.10模架主要零部件……………………………………………………(29)
2.10.1 模架……………………………………………………………(29)
2.10.2导柱与导套 …………………………………………………(32)
2.10.3模座 …………………………………………………………(35)
2.10.4 模柄 …………………………………………………………(35)
2.11压力机选择…………………………………………………………(36)
3.拉手卡子弯曲模设计……………………………………………………(37)
3.1拉手卡子弯曲工艺性分析………………………………………… (37)
3.2拉手卡子弯曲工艺力的计算…………………………………… (37)
3.3拉手卡子弯曲回弹计算…………………………………………… (38)
3.4拉手卡子弯曲模结构设计 ……………………………………… (40)
3.5弯曲模总体设计与标准零件选用 …………………………………(44)
结 论……………………………………………………………………………(45)
参考文献…………………………………………………………………………(46)
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