Retinitis pigmentosa is a disease that causes progressive loss of vision, as the photoreceptor cells degenerate, and eventually die.
视网膜炎色斑是一种可以引起视力丧失的疾病，也就是图像受体细胞退化，最终丧失功能。
Analyzing the craft features of a punching piece, ascertain the process and scheme of a progressive die blank layout, and the design of main die working parts and final assembly structures.
通过该冲件特点的工艺分析，确定级进模排样方案过程和模具主要工作零件及模具总装结构设计。
Aimed at small products with small batch and thin material, considering to lower die costs, a pair of simple progressive punching die is designed.
针对批量小、材料薄的小型产品，考虑到尽量低的模具成本，设计出一副简单的级进冲裁模。
Through analysis of structure of the socket weld connection pieces, determined the layout project, designed a progressive die. Introduced the design points of main parts and die structure.
通过对插座连接焊片结构特点的分析，确定该冲压件的排样方案，设计了一副级进模。介绍了主要工作零件及模具总装结构设计。
Through analyzing the forming process of the comer pull buckle part, designed a cutting-bending-blanking progressive die. And introduced die working principle.
通过对转角拉扣五金零件的工艺分析，设计了一款切折弯曲落料级进模，同时对模具工作过程作了介绍。
According to the side cover structure characteristics of table model computer box, determined the progressive die and the single operation die.
根据台式电脑机箱侧盖的结构特性，确定了级进模与单工序模相结合的工艺方案。
Proved by practice, the die's structure is feasible, reliable, stable, can ensure the products quality, and has reference value for this kind of parts progressive die design.
实践证明，该模具结构合理、可靠、稳定，能保证产品质量，对此类零件的级进模设计有参考价值。
A description has been made on a structure and principle of progressive die used on a general press for shear, upsetting and automatic feed used for forming small axial parts.
介绍了用在通用压力机上成形小型轴类零件的一种新型切断、冷镦自动送料连续模的结构形式、工作原理和设计要点。
Feeding type, structure, applicable range and feeding accuracy of multi-station progressive die have been introduced with description of relationship between selection principle and die design.
介绍了多工位连续模工位间送进方式的类型、结构、适用范围和送进精度，论述了其选用原则及其与模具设计的关系。
It USES process rules to realize step layout optimization for guaranteeing working precision of progressive punch die after obtaining keypoint and minimum number of working steps.
利用工艺规则，通过起始关键点的获取，最少工步数的确定，到排样的优化，来保证级进模的工作精度。
The pressing process of transforming throwout lever is analyzed, Layout of multi-position progressive and die structure are introduced.
分析了转换推杆零件的冲压工艺，介绍了带料排样方案及级进模模具结构设计。
By a specific instance of multi-working position progressive die design for this part, critical process design points are analyzed, and the working principle of grounding pin die is stated in detail.
通过此零件多工位级进模设计的具体案例，分析工艺设计要点，详细阐述接地插脚模具的工作原理。
It has been recommended a technology and die of bending ring with analysis of its forming process, using in that of bending ring in progressive forming die.
介绍一种卷圆工艺和模具，并对模具弯曲成形过程进行了分析，指出该方法可以用于级进模上成形。
The die structure of progressive die of assembled panel is introduced. The strip layout and the design of main parts are also analyzed. Some reference data are also provided.
介绍安装板进模的模具结构，重点介绍其排样图及主要零件的设计，同时提供一些经验数据。
The mathematics model of multiobjective optimum combination, good algorithms and CAD system for strip layout of multistep progressive die are given in this paper.
提出了多工位级进模工步设计的多目标最优化组合的数学模型、通用算法以及建立其CAD系统的实现方法。
A progressive die that adopting the lever mechanism to stamp upwards and bend the part and utilizing the movable punch to bend the part of close shape was introduced.
介绍了一种利用杠杆机构进行由下向上冲裁和弯曲，以及利用活动凸模进行封闭形状弯曲的级进模。
Introduced the pressing technology analysis, the carrier choosing, layout designing and structure design of the progressive die for the swinging connecting rod.
介绍了摆动连杆的冲压工艺分析过程、载体的合理选择、带料排样方案的确定及级进模模具的总装结构设计。
The stamping technology of multi position progressive die of handle of file clip was analyzed. The layout and mould structure were designed.
分析了文件夹手柄多工位级进模的冲压工艺，设计了排样图及模具结构。
Processing analysis by numerical simulation(NS) of deep drawing step in progressive die(DDSPD) quickly and accurately was very important.
在带有拉深工步的级进模设计中，用数值模拟技术对其拉深工步进行工艺分析是非常重要的。
Parts characters are analyzed, as well as, the critical progressive die design points, general design structure and layout program are introduced.
分析了零件的特点，介绍了级进模设计要点，总体设计结构和排样方案。
The economic and technical results received from the improvement in the layout of the progressive die for the steel core of the sealing bar were stated.
阐述了密封条钢芯级进模排样的改进对模具结构的影响，以及所带来的经济、技术方面的变化特点。
Strip layout is the key procedure in progressive die design, it is known as a NP hard problem.
级进模工步排样是级进模设计的核心，理论上属NP完全问题。
Strip layout is the kernel in progressive die design and intelligent strip layout is the main con tent of stamping die expert system.
工步排样是级进模设计的核心，智能化工步排样是冲模设计专家系统的主要研究内容。
Because of the high precession and complicated construction requirements, the multi-stationed progressive die is hard to process with the traditional serial development besides a long production term.
多工位级进模精度要求高，结构复杂，传统的串行开发存在着制造难度大、生产周期长的缺点。
A blanking production technology of the motorcycle bulb was analyzed, and a set of progressive blanking die was designed for the shell.
分析了一种摩托车大灯灯泡前金属外壳的冲压生产工艺，设计了一套级进冲压模具。
This paper introduces high speed precise progressive die including its design method, construction properties and manufacturing properties. Some factors that influence its speed are also discussed.
介绍高速精密连续模的设计方法、结构特点、制造特点，并探讨影响精密连续模速度的因素。
A processing plan of progressive die stamping for chain element was established according to the shape, dimensions of the part and requirements for production.
根据链节零件的形状、尺寸及其生产要求，制定了级进模冲压成形工艺方案。
The lead wire parts multi-position progressive die is introduced, the method of multi-units strip material cutting off is stated, and a novel guide pin structure is introduced.
介绍了引线角多工位级进模，叙述了多单元条料的切断方法，及以一种新颖的导料钉结构。
Layout optimization is an essential point in CAD of high precision progressive punch die.
跳步排样是高精度级进模CAD中的重要组成部分。
The traits of progressive die for IC lead frame have been introduced with emphasis on the ironing stage in layout design and stripping micro-adjustment, safety setup of the structure.
介绍了IC引线框架级进冲模的特点并着重讲述了其排样设计中的整形工位和模具结构中的卸料、微调和安全机构，可供精密级进冲模设计参考。
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