基于UG充电器外壳多工位级进模设计

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.充电器外壳按工序设置了冲导正孔、冲安装孔及散热孔、冲废料、创建Z折弯、创建折弯、冲载体废料七个工位,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.     

CPU连接器端子冲压工艺分析及高速精密多工位级进模设计

分析CPU连接器端子冲压工艺及高速精密多工位级进模具设计中的技术难点,介绍其复杂折弯高速精密级进模具的总体结构,重点论述工位设计、排样图设计、高速模具结构设计及关键零件设计等技术,并简要介绍高速精密级进模主要零/部件的加工工艺.实践证明,模具结构合理可靠,能保证产品质量,冲压速度可达1000冲次/分钟以上,对此类零件的级进模设计有参考价值.     

多工位冲压级进模关键技术

正级进模(Progressive Die)由多个工位组成,在冲压机的一次行程中,一副模具可以完成冲裁、弯曲、拉深、成形、叠铆、翻孔及攻螺纹等多种冲压工序。多工位级进模被公认为是一种精密、高效、高质量、长寿命并适合大量生产的高技术模具,是未来冲模发展的方向。随着我国工业水平的提高,特别是汽车工业的快速发展,多工位级进模的应用愈发广泛。图1为某汽车结构件的多工位级进模生产料带,工序包括级进模的     

智能型多工位级进模条料排样

阐述将专家系统技术引入多工位级进模冲压工艺设计中所遇到的问题及解决方法。结合专家系统知识,针对冲压件特点,在搜集整理冲压工艺知识的基础上,提出了冲压件及其工艺知识在专家系统中的表达方式,建立了冲压件及条料的框架模型。由推理机作正向推理,获得包括冲裁、弯曲、拉伸等工序的多工位级进模条料排样。     

支架托板的PDW多工位级进模设计

运用UCNX中的PDW模块,进行五金件的多工位级进模设计,方便快捷,大大提高设计效率,便于产品修改.     

高效、先进多工位级进模、多工位传递的特殊功能与合理应用

正现代模具工业中,多工位级进模、多工位传递模都是一种高效率、高精度、技术密集型模具的典型代表。也是冲压模具的发展方向之一。冲模的种类很多,如按工序组合分有:单工序模和多工序模,多工序模又可分为复合模和级进模;按冲模的功效分:普通冲模和高效冲模。高效冲模可分为复合模、多工位级进模、多工位传递模、自动弯曲机模具等。这四种冲模一般都比较精密,所完成的工序多,并     

电机定子片五工位级进模设计

在冲裁模具加工中，多工位级进模是代替单模单冲的先进模具。阐述了定子片五工位级进模的设计方法，并给出计算数据及图样。     

窗帘支架扣件多工位级进模设计

分析了窗帘支架扣件的冲压工艺,进行了排样图设计和多工位级进模的结构设计,重点论述了工位设计、排样图设计、模具结构设计、模具零部件加工要求以及冲压工作过程的关键技术要点。为提高材料的利用率,确保送料的稳定性,在制件之间的废料处设置有切舌工艺,代替边缘的侧刃工艺;最后一个工位切断与弯曲成形的复合工艺等方面进行了详细的解说。实践表明,窗帘支架扣件采用的多工位级进模具与单工序模具相比,不仅提高了制件的质量,减小了工人的劳动强度,提高了生产效率,配合自动送料机构进行冲压生产,实现了自动化生产的需求。     

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。     

冲裁模凹模结构尺寸的确定 上

金属板料冷冲压模具中,大多数为冲裁模。以仪器仪表、电子及电器开关等产品的冲压件所用冲模为例,冲裁模约占全部冷冲模总数的65%～75%。冲裁模以其动作特征可分为单冲式、连续式亦称级进式及复合式三种。单冲式冲裁模是在冲床的滑块一次行程中只能完成一个冲裁工序的简单外模,通称单冲模。连续式冲裁模即连续模,是具有两个或两个以上工位的冲模,材料随压力机行程逐次送进一工位,从     

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.     

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.     

滤清器螺纹盖板冲压模具设计

根据滤清器螺纹盖板的尺寸特征,设计一套多工位级进模。主要介绍该零件的外形特征,以及所设计冲压模具的排样设计和该模具各工位的结构原理。该模具在实际应用中取得了较好的效果。     

级进模结构协同设计的研究与实现

分析了级进模结构设计的特点,在此基础上提出了级进模结构协同设计的方法。给出了级进模结构协同设计中设计信息和模型信息的存储方法,以及设计信息和模型信息的同步方法。基于NX/PDW级进模设计系统,实现了级进模结构的协同设计。     

An investigation of an expert system for shearing cut progressive die design

The purpose of this paper is to develop an expert system for shearing cut progressive die, with the aim of enhancing the design of shearing cut progressive dies. This study is different from previous research on shearing cut die design by the author in that the design of one station was extended into a progressive die design. The major research objectives achieved in this study can be summarised as follows:

1. This study presents a pattern recognition method called the new combined structural approach to let the user interpret blanks by a better and more direct method, thereby achieving the goal of communicating with this expert system.
2. The layout of the strip can affect the material cost shared by the press-worked pieces. This study presents the near optimal method for seeing a better layout of the strip in order to save material.
3. Owing to the great variety of blank shapes which cause the variations in pressing procedures, this study proposes a matching combination learning method, which is a learning conscious system for pressing procedures, in order to obtain the optimal number of operation stations in shearing cut progressive die design.
4. The establishment of the knowledge-base system for shearing cut progressive die should improve the efficiency for die design problems.

     

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。     

基于层次分析法的级进模工序排样影响因子权重的计算

分析了级进模工序排样的特点,总结了级进模设计基本原则,建立了工序排样的评价指标体系。根据层次分析法的基本原理和步骤计算出级进模工序排样影响因子的权重。该方法模拟出设计专家在工序排样过程中考虑众多影响因素的模糊性和综合性思维过程,将思维过程中的定性指标转化为定量指标,为模糊综合评价法在级进模工序排样中的应用奠定了基础,为设计人员进行工序排样方案的最优选择提供了定量科学的参考数据。     

多工位连续模的排样设计

对冲片连续模的结构进行分析,阐述了多工位连续模的排样设计、条料载体设计等主要内容。同时对条料载体和排样设计影响因素,以及如何对其设计质量控制问题进行了介绍。     

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