叉形焊片冷冲模设计论文毕业设计(DOC毕业设计论文).doc

摘要
冲压模具技术作为模具制造业中最重要的组成部分,机械、电子、轻工业等大量使用了冲压零件,所以冲压模具技术水平的高低,发展前景的好坏直接影响到整个制造业的发展。随着经济的高速发展对模具工业提出了越来越高的要求,也为其发展提供了巨大的动力。
复合冲压模的特点是生产率高,冲裁件的内孔与外缘的相对位置精度高,本制件为小尺寸平板冲裁件,要求平整、料厚很小,且要求大批量生产,故采用顺装式复合冲裁模。凹模采用镶拼结构,不但加工方便而且节省材料。为了使加工平稳,模具采用中间导柱。
本复合模,采用了冲孔和落料两个工序进行冲压。该套冲压模具设计周密,设计内容全面。包括对冲压件工艺性分析,模具工艺方案的确定,模具零件的设计、受力计算及其校核,模具标准的选定,装配图的绘制,压力机的型号选定,零件加工工艺的确定等,并综合考虑分析横排、对排、斜排等各种排样方式的优缺点和适应性,最后以最高效率、最低成本、最高质量、最简结构来确定排样和模具的结构,这样的模具操作更加安全、快捷、方便,并且更容易达到冲压件的公差等级要求等。实现了冲压模具用材节省、结构合理、精度高、操作方便等优点。
关键词:顺装复合模;排样; 落料;冲孔;镶拼结构
Abstract
The technology of stamping die as the most ponent of the die manufacturing, mass machinery, electronic, light industry and so on, have used the ponents high level of stamping die technical height, the prospects for development quality affects directly the entire manufacturing industry development. Set the more and more high request along with the economical high speed development to the mold industry, also has provided the gread power for its development.
The characteristic pound die is that the productivity is high, the relative position precision of the workpiece hole and the outflow boundary is high. This workpiece is light-sized dull blanking, and requests smooth, its material thick very small, also requests mass production, therefore pound die for forward assembling. The insereted structure is used in die . it is noly easy to machining,but save the blank material. middle pole is used to let the mold be reposeful。
pound mold have two workstages,Blanking and punching。The stamping die’s design cycle is thorough prehensive .Such as pressing part has been made all the necessary full craft analysis, die craft is designed carefully ,craft calculation formulas ,die type and construction are elected prudently ,assemble drawing and parts drawing are reordered time and time again, with prehensively the structures of various moulds ,and finally we confirm the structure of the blank layout with the criterion of the high efficiency, l