共查询到18条相似文献,搜索用时 78 毫秒
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以软件工程学的原理对拉深模CAD系统进行结构化分析、结构化设计和结构化程序设计。利用该方法编制的拉深模CAD系统结构化程度高 ,通用性强 ,便于修改和维护 相似文献
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针对我国中小型企业拉深模设计的现状,提出了一种开发模式,即基于微机开发实用的盒形件拉深模CAD系统。并阐述了系统的功能、结构及实现方法。 相似文献
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拉深模CAD系统的研究与开发 总被引:1,自引:0,他引:1
传统的拉深模设计需要借助模具设计师的经验知识、查阅大量手册,费时耗力,且重复性工作多,原有专家知识和经验知识不能有效利用.而采用如AutoCAD、Pro/E等通用CAD软件设计拉深模,由于没有融八拉深模设计的流程和知识,针对性较差,影响了设计效率和质量的进一步提高,无法满足企业生产实际需求.文中介绍了拉深模CAD系统的开发过程,研究了开发中的关键技术. 相似文献
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基于SolidWorks的电机三维CAD系统的开发 总被引:2,自引:0,他引:2
针对国内尚无电机三维CAD软件开发应用的状况,提出了基于SolidWorks的电机三维CAD系统开发的总体框架和实现方法,实现了电机的参数化三维建模、GB工程图输出、电机零件库的科学管理,极大的避免了设计人员的重复劳动,提高了电机设计的效率,具有很大的实用意义。 相似文献
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针对飞机工装橡胶压模设计步骤繁琐,效率低下等问题,在深入分析橡胶压模结构和归纳总结橡胶压模类型的基础上,总结已有的设计流程,并在三维CAD 平台CATIA 上,利用CAA 开发工具实现橡胶压模快速设计系统,实现了模具体的快速生成,模芯的快速装配。并应用于某大型航空企业的工装设计中,取得了良好的效果。 相似文献
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Computer-aided structural design of drawing dies for stamping processes based on functional features
Bor-Tsuen Lin Ming-Ren Chang Hau-Luen Huang Chun-Yu Liu 《The International Journal of Advanced Manufacturing Technology》2009,42(11-12):1140-1152
This paper describes a structural design system for 3D drawing dies based on functional features using a minimum set of initial information. In addition, it is also applicable to assign the functional features flexibly before accomplishing the design of a solid model for the main parts of a drawing die, such as upper die, lower die, and blank holder. The initial information includes blank sizes, work strokes, die faces, punch open lines, and press data. The proposed system integrated the design knowledge of drawing die into functions of 3D computer-aided design (CAD) software to automate design and to shorten design time. This design system is constructed on a PC and integrated with a Pro/ENGINEER CAD system including feature selector, shape calculator, model generator, design coordinator, and user interface. The proposed system is demonstrated using the example of designing a drawing die for the roof panel of a vehicle within 1 h. The results reveal that it can dramatically improve the design quality and can save both time and costs with excellent design quality. 相似文献
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在指出BOM对企业具有重要作用的前提下,根据制造企业的特点,分析说明了自动生成BOM的关键技术.提出了如何利用工程图纸存取的API函数,从产品图纸中提取信息自动生成BOM的方法.最后给出了应用实例.应用结果证明,基于API设计的BOM,能减少制造企业中的重复性劳动,提高企业的信息化程度,有助于系统的高效无缝集成. 相似文献
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开发了摩托车车体模具数字化设计与制造流程。利用反求设计和曲面重构理论 ,提出了车体、弯管件和复杂型面的测量规划 ,结合三坐标与常规测量数据建立了车体CAD模型和弯管弯曲模具CAD/CAM模型 ,实现了摩托车车体模具的数字化设计与制造 ,为复杂焊接组合件模具的反求设计与制造提供了一种切实可行的方法。 相似文献
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Sang-Kon Lee Myeong-Sik Jeong Byung-Min Kim Seong-Kon Lee Seon-Bong Lee 《The International Journal of Advanced Manufacturing Technology》2013,66(1-4):381-392
The cold tube drawing has been generally regarded as an effective technology because of its high productivity and low production costs. It has been used instead of the swaging process to form monobloc tube shafts (MTSs) with a constant outer diameter or hollow shafts without defects. MTSs are used nowadays to reduce the weight of shafts and to improve power transmission in the auto industry nowadays. The objective of this study was to design an optimal die that can prevent material fracture considering critical damage value in the tube drawing process. To achieve this objective, a finite element simulation and the flexible polyhedron search method are used. The drawing die shape is represented by the Bezier curve that is able to generate all the possible die shapes. The tube drawing experiments were carried out using the optimized tool. In the experiments, it was possible to produce sound products without fracture. 相似文献
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Bor-Tsuen Lin Chian-Kun Chan Jung-Ching Wang 《The International Journal of Advanced Manufacturing Technology》2008,36(7-8):671-680
The design of drawing dies is a very complex and knowledge-intensive process. This paper describes a knowledge-based parametric design system for drawing dies which requires only a minimum set of parameters to be set before it is able to complete the design of the main components of a die, such as upper dies, lower dies, and blank holders. This minimum set of parameters includes blank sizes, die faces, punch open lines, drawing strokes, and press data. This design system implemented on top of the Pro/E CAD software consists of a drawing die knowledge base, a subcomponent inferencer, a dimension calculator, a subcomponent generator, a system coordinator, and a user interface. We use the design of drawing dies for inner wheel house as a concrete example to show that our system can greatly improve the design quality while reducing the development time and cost. 相似文献
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注塑机合模机构的计算机辅助设计 总被引:2,自引:0,他引:2
介绍了注塑机合模机构计算机辅助设计方法,以开锁模行程之比和曲柄摇杆长度之和两目标函数建立综合优化设计模型来求出机的参数尺寸,然后,通过对机构进行运动特性和自锁特性分析,得出注塑机合模活塞的两极限工作位置。本系统为绘制机构零件提供了机械CAD参数化图库管理系统的参数数据。 相似文献
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UG-Ⅱ计算机软件在冲压模具设计中的应用 总被引:1,自引:0,他引:1
这里主要介绍了上海大众桑塔纳Pickup汽车的后拦板模具设计过程。设计过程中使用了先进的CAD软件Unigraphics。由于CAD技术的使用,克服了传统模具设计与制造方法的许多缺陷。整个过程以数据为核心,改变了传统图纸,实物模型的传递过程,缩短了设计周期,模具的曲面采用数学模型描述,保证了设计质量,提高了技术人员的创造性和减轻了劳动强度。 相似文献