Abstract：The Center carrier-type progressive die for U-bending sheet metal production part is a very specific pision. This study reveals the shee metal forming process with multi-forming die by Cut off type feeding system.

Through the FEM simulation by DEFORM, it was accepted to U-bending process as the first performance to design of strip proces layout.

The next process of die development was studied according to sequence of die development, i.e. die structure, machining condition fo die making, die materials, heat treatment of partially die components, know-how and so on.

The feature of this study is the die development of scrapless progressive die ofmulti-stage through theModeling on the I-DEAS program components drawing on the Auto-Lisp, CAD/CAM application, ordinary machine tool operating and revision by tryout.摘  要

冲压模具制造业在中国的工业领域是更加的重要，是不可或缺的一部分。本毕业设计课题是连接件落料、冲孔、弯曲成型工艺与模具设计，在设计分析中，通过三种不同的冲压方式进行分析，如单工序模，复合模和级进模。通过分析，最终选用落料，冲孔，弯曲级进模进行本次课题的设计。本文叙述了连接件的冲压成型步骤，生产要求，制品质量，结构等，根据制品的性能要求，采用冲压工序进行零件的加工，并且通过毛坯的展开，排样等方案，工序顺序的确定。本文还能过冲裁力的计算，压力中心计算，模具刃口尺寸与公差的计算进行设计模具。另外，还通过分析冲压模具主要零件的设计方法，包括凸模，凹模，凸凹模，固定板，卸料装置等。设计过程中，通过CAD软件进行合理的模具装配图设计，并列出主要零件的明细清单。通过现代的模具开发与制造技术进行模具结构优化，改进，改善工艺方案，从而提高生产效率。

关键词：连接件；模具设计；级进模

Abstract：With China's industries continue to develop and die industry is also becoming increasingly important. Based on the The fittings part of the stamping process and the bending process, Comparative analysis of the process of forming three different stamping process (single processes, complex processes and continuous processes) confirm completion of a progressive die blanking, bending processes and punching process. On the The fittings part of the cold stamping process, right after the The fittings part of the mass production, quality components, and the use of structural components of the analysis, research, in line with lower performance prerequisite to the identification of stampings, Stamping method used to complete the processing components, and a brief analysis of the blank shape, size, layout, the Conference Board, the number of Drawing, stamping processes in nature, number and sequence determination. For the process, the center of pressure, the die size and the tolerance of the calculation, design mold. Also analyzes the mold of the main components (such as punch and die and dump devices, bending punch, slates, Punch plate, etc.) design and manufacturing, stamping equipment selection, punch-gap adjustment and establishment of a vital parts machining process. Die requirements set out a detailed list of parts, and gives a reasonable assembly. By fully utilizing modern manufacturing technology to mold traditional mechanical parts for structural improvements, design optimization, Process optimization methods can greatly enhance production efficiency, the method of similar products have some reference.

Keywords: The fittings part; Mold design; Progressive die

目  录

摘  要 I

Abstract II

引  言 - 1 -

1 冲裁件的工艺性分析 - 2 -

1.1 冲裁件的结构工艺性 - 3 -

2 制件冲压工艺方案的确定 - 4 -

2.1 冲裁方式的组合 - 4 -

2.2 冲压顺序的安排 - 4 -

3 制件排样图的设计及材料利用率的计算 - 6 -