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1、毕业设计（论文）题 目： 隔 离 罩 级 进 模 设 计学 院：工程技术学院专业：机械设计制造及其自动化学生姓名：指导教师：毕业设计（论文）时间：设计总说明本课题的设计内容是冲压件模具设计，可以采用单工序的级进模具或部分 复合模具或多工位级进模对制件进行冲制加工。在收集查阅资料的前提下，依 据制件的形状以及外形尺寸，考虑模具制造的成本、加工的难易程度及加工后 制件的精度要求是否满足尺寸精度的要求、生产效率的高低等方面，对上述可 行的设计方案进行较为全面的比较，最终确定采用级进模进行制件的加工。一个冲压零件，如用简易模具冲制，一般来说，每项冲压工序，如冲裁（冲 孔、冲切或落料）、弯曲、拉伸、成型
2、等，就需要一套模具。对于一个比较复 杂的零件来说，则需要几副模具才能完成。因此这种简易模具的生产效率，相 对来说就比较低，对于大批大量生产的定型产品，用简易模具进行生产是及其 不适用的。级进模是冷冲压模的一种。级进模又称跳步模，它是一副模具内，按所加 工的零件，分为若干个等距离的工位，在每个工位上设置一定的冲压工序，完 成冲压零件的某部分加工。被加工材料（一般为条料或带料）在控制送进步距 离的前提下，经逐个工位冲制后，便得到一个完整的冲压零件（或半成品）。 这样，一个比较复杂的冲压零件，用一副多工位级进模即可冲制完成。一般来 说，无论冲压零件的形状多么的复杂，工序怎么多，均可用一副多工位级进模
3、 冲制完成。按照级进模的设计步骤，可将模具的设计过程分为以下几步来完成：1、对工件进行工艺性分析，确定工件的加工工序；2、根据制件的形状尺寸，设计步距、材料的利用率，设计合理的排样方案， 最终确定实用性方案；3、根据排样图中所冲压的零件外形，确定凸凹模的形状；4、根据凸凹模的形状，确定凸凹的加工配置方法，确定凸凹模的尺寸；5、根据工位的数目，确定模具的周边长度，选择标准模架；5、选择模具的主要部件，如：导向部件、固定部件、连接部件、卸料装置6、绘制装配图以及零件图；在进行工艺设计的过程中，将零件的加工过程制定为 7 个工位，工位 1 两 边工艺切口；工位 2 空位；工位 3 冲工艺长孔；工位
4、4 首次拉深；工位 5 二次 拉深兼整形；工位 6冲底部矩形孔；工位 7落料。根据排样图的整体外形尺寸及其精度要求，选择合理的加工方法，确定凸 模的整体外形尺寸、制造精度，考虑在模具中的安装位置，计算凸模的长度； 由凹模的尺寸，选择与凸模的加工方法，计算凹模的型腔的尺寸，做成整体凹 模。在上述成型部分的分析，将成形的部分别做出，便于加工制造。依据模具的结构组成，依次根据凸、凹模的形状，查阅模具标准，选择卸 料板装置、垫板装置、凸模固定板装置等外形及合理的尺寸，符合各具体装置 的具体要求，保证各部分的合理间隙值。从零件的各方面考虑，选用对角滑动 模架，既能保证零件的加工精度由符合模架的选用原则。
5、级进模的设计基础与冲压工艺，主要依赖于单工序模。但有的地方，由于 级进模可以将复杂的形空分布冲压而成，不存在复合模的最小壁厚问题，所以 在冲压工艺的可行性要求方面，使用多工位级进模比使用但工序模。反而更宽 松一些。往往采用但工序模冲有困难，采用多工位级进模冲没有问题。因此， 级进冲裁的工艺性，在参考普通冲裁件的工艺性基础上，可以放宽要求。一般情况下，平板状片形状，不论其内形复杂到什么程度，原则上采用纯 级进冲裁都无问题。只是内形比较简单，不用分段冲或分段少，工位数少些； 内形比较复杂，分段冲多，工位数多些。Design General InformationThis issue is the
6、design of stamping die design, the process can be used alone or in part, the Progressive mold or mold compound in the progressive die for the parts-processing system. In access to information collected under the premise, based on parts of the shape and form factor, considering the cost of mold manuf
7、acturing, processing and the ease of processing parts of the accuracy requirements to meet the requirements of dimensional accuracy, the level of production efficiency in terms of On the possible design options for a more comprehensive, final adoption of progressive die for parts of the processing.A
8、 stamping parts, such as easy-die system, in general, each stamping processes, such as punching (punching, punching or blanking), bending, stretching, molding, on the need for a mold. For a more complicated parts, will need to complete several of mold. So this simple mold production efficiency, rela
9、tively speaking on the relatively low, a large number of mass-produced products stereotypes, using simple molds and production is not applicable.Progressive Die is a cold stamping die. Progressive Die also known as step-dancing, it is a mold, according to the processing of parts, divided into a numb
10、er of equidistance in the place of workers in each set on a stamping process, stamping parts to complete a certain part of the processing . Be processed materials (normally be expected or in raw material) in control from the delivery progress under the premise of the bit-by-the-post system, will be
11、a complete stamping parts (or semi-finished products). In this way, a more complicated stamping parts, with more than one-position Progressive Die-system can be completed. Generally speaking, no matter how the shape of stamping parts of the complex, how many processes can be used more than one-posit
12、ion Progressive Die-system completed.Progressive Die in accordance with the design steps, the mold can be divided into the design process to complete the following steps:1. part of a process of analysis, the workpiece processing;2. according to parts of the shape of size, design step, the utilizatio
13、n of materials, design and rational layout programme, final practical programmes;3. in accordance with layout plans in the stamping of parts shape, determine the shape of Tuao die;4. according to the number of workers to determine the length surrounding the mold, die-selection criteria;5. the main c
14、hoice of mold parts, such as:-oriented components, fixed parts, connecting components, such as unloading equipment;6. rendering assembly and parts map;In the process of technological design, will be part of the process to develop five-position, the use of a tooth from the side of the blade to achiev
15、e, but also is conducive to the forming of bending hole; 2-for-two system The hole; three-position punching two parts of the more than expected, and in the meantime, in order to better achieve the purpose of bending, in the process of punching two holes in a horizontal hole process, so that the orig
16、inal process into a hole The glyph, in the process of stamping, the deformation of material smoothly, the four-bending forming, the station is the key to the whole mold design, stamping on the structure appropriate adjustments made, the upper and lower-all By Xiangpin structure, and can be adjusted to control size, also facilitates the processing, inserts can be used grinding into more precise size. In order to suppress f
