复杂弯曲冲压件的排样设计

排样设计是多工位级进模设计的关键。排样设计确定了模具的工位数、工位内容、冲压各工序的安排、条料宽度、送料步距及导料和定位方式等。因此排样完成后,模具的总体设计思路和基本结构就已确定。本文利用Pro／E的级进模设计系统PDX5．0解析两个弯曲件的排样设计,以供业内参考。     

基于优化准则的IC引线框架级进模工序设计

工序排样是级进模CAD系统应用的瓶颈 ,结合IC引线框架类工件特征 ,从级进模设计经验中总结出优化准则 ,提出适用于开发这一特定类工件的简化排样方法 ,满足CAD系统的自动化要求 ,提高了排样效率     

安装座的多工位级进模设计

在对安装座成形工艺分析的基础上,根据制件外形复杂、成形精度和生产要求要求高的特点,提出了该零件采用多工位级进模的冲压方案.详细分析了安装座零件的结构特点和冲压工艺性,重点阐述了排样设计.并通过比较两种排样设计方案,进行了安装座零件模具结构及级进模关键零件的设计,选用对角导柱式模架,并在工序排样中确定了成形侧刃定距方式,简化了模具结构.实践证明:该模具结构合理,对同类零件的级进模设计具有重要参考作用.     

基于PDW的支承盖板级进模具设计

通过对货箱第二支承盖板零件级进模工艺研究,采用UG-PDW软件设计级进模具,对钣金展开、条料排样和级进模具结构设计的主要设计过程进行了详细介绍,表明PDW技术在较多工序的级进模具设计中能够大大节约模具设计的时间,提高设计效率,节约成本。     

基于特征的级进模并行设计

将特征技术引入级进模设计，并针对级进模设计的特点，提出了特征影响区域的概念，该概念能够有助于提高排样的合理性以及自动排样。此外还阐述了与制件特征相关联的基于实例的模具设计技术，提出了基于特征的级进模并行设计系统框架。     

开关触片多工位级进模设计

针对该开关触片形状复杂,多工序成形时的低效率问题,设计了多工位级进模。介绍多工位级进模设计的排样、模具结构、主要零部件的设计与制造技术要求,对于提高生产效率、稳定制件精度,节约材料和成本有一定的意义。     

多工位级进模排样图分析

近年来,我厂引进和生产了几十套多工位级进模,通过实践使我们认识到要设计出完好的级进模,排样图的设计是关键的。排样图设计的合理与否,直接影响到零件尺寸精度,材料利用率,模具的设计、制造、维修及模具的使用寿命。 在级进模排样图设计前,首先要考虑如下因素。     

基于UG打印机支架多工位级进模设计

级进模向导（PDW）是UG软件的一个重要功能模块,PDW提供了毛坯布局、废料设计、工序排样、标准件设计、模架设计、冲裁设计、镶块组设计、让位槽设计等功能。打印机支架按工序设置了冲导正孔、冲安装孔、成形凹坑、冲废料、折弯、Z折弯、冲载体废料7个工位,完成全部工位后,便可得到一个完整的冲压成品制件。PDW能自动执行级进模的设计和细化工作,使用PDW可以极大地提高级进模设计效率。     

焊片少废料级进模设计与制造的研究

通过对电器元件中的冲压模具的设计与制造的研究,从工艺性分析、零件排样设计,级进模结构、模具制造等多方面对级进模进行了研究.给出了相应的设计步骤和改进措施,以期对加快我国级进模设计与制造技术的发展起到促进作用.     

普通门扣级进模的改进设计

针对普通级进模设计上的缺陷,分析了门扣成形工艺,重新设计了成形该零件的具有落料、冲孔的工序的排样方案,并进行了级进模结构设计。实践证明,改进后的模具结构紧凑合理,零件尺寸稳定,原材料利用率高,用户非常满意。     

Development of an automated progressive design system with multiple processes (piercing, bending, and deep drawing) for manufacturing products

This paper describes the research work involved in developing an automated progressive design system with multiple processes such as piercing, bending, and deep drawing for manufacturing products. This approach to make a progressive, flexible working system is based on knowledge-based rules. The knowledge required for this system is formulated from plasticity theories, experimental results, and the empirical knowledge of field experts. The system consists of three main modules: shape treatment, strip layout, and die layout modules. The system is founded on knowledge-based rules and is designed in consideration of several factors, such as the material and thickness of a product, the piercing, bending and deep drawing sequence, and the complexities of blank geometry and punch profiles. The system then generates the strip layout drawing for an automobile product. The die layout module carries out the die design for each process from the results of the strip layout module. The results obtained using the modules enable the designers of manufacturing products with multiple processes to be more efficient in this field.     

级进冲模并行CAD系统实施框架

将系统集成原理应用于级进冲模并行CAD中,分析了级进冲模设计过程中的信息流,把信息归纳为模具方案设计信息集合、模具结构设计信息集合和模具零件设计信息集合。由此导出了级进冲模并行设计的功能模型,开发出级进冲模并行CAD系统实施框架,该系统可以实现级进冲模排样、模具主要结构以及主要零部件的并行设计。     

A Study of the Progressive Working of an Electric Product Using a 3D Shape Recognition Method

This paper describes the development of the computer-aided design of an electric product using bending and piercing operations for progressive working. The system is based on knowledge-based rules. Knowledge for the system is formulated from plasticity theories, experimental results, and the empirical knowledge of field experts. The system has been written in AutoLISP in AutoCAD on a personal computer and is composed of four main modules, which are input and shape treatment, flat pattern layout, strip layout, and die layout modules. Based on knowledge-based rules, the system is designed considering several factors, such as bending radius, bending angle, effect of springback, material and thickness of a product, bending sequence, and the complexities of the blank geometry and punch profiles. It generates the 3D strip layout drawing for an electric product. The die layout module carries out die design for each process from the results of the strip layout module. Results obtained using the modules enable the designer and manufacturer of piercing and bending dies to be more efficient in this field.     

Development of a System for Progressive Working of an Electric Product by Using Fuzzy Set Theory

This paper describes the development of a computer-aided design for a product with intricate bending and piercing operations for progressive working. The approach to the system is based on knowledge-based rules. Knowledge for the system is formulated from plasticity theories, experimental results, and the empirical knowledge of experts in the field. The system has been written in AutoLISP and AutoCAD on a personal computer. It is composed of four main modules, which are input and shape treatment, flat pattern layout, strip layout, and die layout modules. The system is designed considering several factors, such as bending sequence by fuzzy set theory, complexities of blank geometry, punch profiles, and the availability of press equipment and standard parts. The strip layout and die layout drawings, which are automatically generated by formulisation and quantification of experimental technology, will minimise trial and error and reduce the period for developing new products. The system could serve as a valuable system for experts and as a dependable training aid for beginners. ID="A1"Correspondance and offprint requests to: Professor J. C. Choi, Department of Mchanical Engineering, ERC for NSDM at Pusan National University, 30 Changjeon-dong, Kumjeong-Ku, Pusan 609-735, South Korea. E-mail: jcchoi@hyowon.pusan.ac.kr     

基于快速仿真方法的多工位级进模条料设计

汽车结构件形状复杂、成形难度大,其条料设计是级进模工艺设计中急需解决的难点和瓶颈问题。基于有限元逆算法,开发了一种基于工艺特征的条料多步展开算法,并将其应用于条料早期工艺设计。该算法不仅计算速度快,而且可以综合考虑搭桥、压边力、摩擦等实际工艺条件,可以比较精确地预测中间工步的成形性和中间构形。以复杂级进模零件为例详细说明了该算法的具体实现过程。     

基于Pro/E的液晶显示器支架的冲压工艺与模具设计

分析了液晶显示器支架零件的冲压成形工艺,介绍了液晶显示器支架的冲裁设计,确定该钣金工件的生产工序及工艺方案,同时还介绍了多工位级进模总体结构设计、排样方案和成形特点,关键部件的设计与计算方法,模具生产的零件符合精度要求.     

A knowledge-based blackboard framework for stamping process planning in progressive die design

It is widely accepted that stamping process planning for the strip layout is a key task in progressive die design. However, stamping process planning is more of an art rather than a science. This is in spite of recent advances in the field of artificial intelligence, which have achieved a lot of success in incorporating built-in intelligence and applying diverse knowledge to solving this kind of problem. The main difficulty is that existing knowledge-based expert systems for stamping process planning lack a proper architecture for organizing heterogeneous knowledge sources (KSs) in a cooperative decision making environment. This paper presents a knowledge-based blackboard framework for stamping process planning. The proposed approach speeds up the progressive die design process by automating the strip layout design. An example is included to show the effectiveness of the proposed approach.     

基于图论的高精度级进模跳步排样优化算法

跳步排样是高精度级进模ＣＡＤ中的重要组成部分。提出一种基于图论的跳步排样优化算法。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。     

汽车支撑件多工位级进模设计

本文分析了汽车支撑件的冲压成形工艺,进行修边、冲孔、弯曲、压筋及分离等多个工序的11工位级进排样设计和模具结构设计,采用抬料板和整体弹压卸料板相结合的结构形式。模具结构紧凑,卸料可靠,实现自动送料,卸料和出料,可进行大批量自动化生产,产品质量高,整体成本低。     

马达外壳多工位级进模具设计

分析了马达外壳零件的成形工艺,详细介绍了多工位级进模总体结构设计、排样方案和成形特点,关键部件的设计计算方法.该模具结构紧凑,动作可靠,经实际使用,运行良好,提高工效一倍以上.