500kV线路带电作业方法及工器具的应用

500kV线路电压等级高,杆塔类型多,各塔型塔头尺寸较通常情况复杂．造成带电作业过程中塔头承力工器具的通用性不好,不仅增加了工作难度和成本,同时也限制了带电作业的实践应用。为此,对进入强电场的绝缘工器具及作业方法进行摸索、改进和现场应用．包括更换ZM塔型直线绝缘子串的工器具改进、单柱绝缘爬梯的现场应用、500kV线路带电作业的现场应用等。     

80万亩造纸林基地项目简介及建议

1 80万亩造纸林基地简介 广纸拟在7年内建设80万亩速生丰产的造纸林基地,其中马尾松70万亩,桉树10万亩,树种选择具有速生丰产性能的广东高州马尾松、台山杂交松、广西加勒比松、尾叶桉等.     

Pro/E教学文件的制作

运用Pro/E的trail/training File,结合实例,研究了轨迹文件(记录某个特定的进程)及培训文件(指导用户完成Pro/E的实例练习或操作).     

HFC接入网上行传输通道均衡性的分析

主要对HFC接入网上行传输通道各个环节的均衡性进行了分析，指出电缆分配网络上行传输系统是制约网络多功能开发的主要因素之一，并针对有线电视网络现状提出了HFC接入网的改造思路。     

知识工程在模具标准组件建模中的应用研究

针对传统CAD技术无法表达产品知识和设计经验等非几何信息方面的不足,提出把知识工程KBE与CAD技术相结合的解决方案。介于CAD技术和知识工程技术之间新出现的边缘技术UG/KF很好地解决了知识工程在建模技术上的应用。运用UG/KF建立了模具标准组件的模型,与其它建模方法作比较,分析了使用知识熔接语言建模的新特点,提出新一代模具CAD软件的发展思路。     

Intelligent manufacturing system of impeller for computer numerical control（CNC） programming based on KBE

To solve the problem of advanced digital manufacturing technology in the practical application, a knowledge engineering technology was introduced into the computer numerical control（CNC） programming. The knowledge acquisition, knowledge representation and reasoning used in CNC programming were researched. The CNC programming system functional architecture of impeller parts based on knowledge based engineering（KBE） was constructed. The structural model of the general knowledge-based system（KBS） was also constructed. The KBS of CNC programming system was established through synthesizing database technology and knowledge base theory. And in the context of corporate needs, based on the knowledge-driven manufacturing platform（i.e. UG CAD/CAM）, VC＋＋6.0 and UG/Open, the KBS and UG CAD/CAM were integrated seamlessly and the intelligent CNC programming KBE system for the impeller parts was developed by integrating KBE and UG CAD/CAM system. A method to establish standard process templates was proposed, so as to develop the intelligent CNC programming system in which CNC machining process and process parameters were standardized by using this KBE system. For the impeller parts processing, the method applied in the development of the prototype system is proven to be viable, feasible and practical.     

注塑模具硬态高速铣削力研究

采用高速铣床对4Cr5MoSiV1钢注塑成型模具进行硬态铣削,研究切削加工参数对切削力的影响,通过多因素法正交试验,利用改进的BP神经网络建立了切削力的神经网络模型,将网络预测结果经过现场加工实践检验其准确性,利用MATLAB分析切削参数的影响。结果表明:人工神经网络能准确地预测铣削力的大小,模型具有良好的泛化能力和自适应能力;在高转速、小切深、合适的进给速度以及微量切削液状态下铣削力较小,为优化模具硬态铣削的切削参数并对其实际生产应用提供了较好的依据。     

广告机控制盒注射模设计

为成型广告机控制盒外壳部分设计了多种抽芯方式组合的模具结构,该结构利用多组不同的滑块完成抽芯,解决了生产中的难题。