【摘 要】
：
Cylindrical Cam Mechanism which is one of the best eq uipments to accomplish an accurate motion transmission is widely used in the fie lds of industries, such as machine tool exchangers, textile mach
论文部分内容阅读
Cylindrical Cam Mechanism which is one of the best eq uipments to accomplish an accurate motion transmission is widely used in the fie lds of industries, such as machine tool exchangers, textile machinery and automa tic transfer equipments. This pape
其他文献
通常大多数三维参数化CAD系统都只用平面和球面作为最基本的作图工具,这在某种程度上限制了三维参数化CAD系统的作图范围.通过引进一类新的作图工具,使得三维参数化CAD系统的作图范围得到扩大.同时证明了一个三维几何图形可以用平面、球面和圆锥曲面构造出来的充分必要条件是这个三维几何图形可以用一个三角化的次数小于9的代数方程组来描述.通过引进圆锥曲面作为新的作图工具,著名的三维Appolonius作图问
传统的概念设计方法由于缺乏真实感的交互手段,难以直观表达设计者的意图.基于虚拟原型的概念设计不仅能为设计者提供逼真的虚拟设计环境,而且充分体现了现代设计的成本低、周期短以及灵活性强等特点.针对概念设计的特点以及虚拟原型的特征分类,提出了基于虚拟原型的概念设计模型V-desModel,其核心是利用产品视图模型描述设计对象,将虚拟特征概念融入视图模型中,并采用可扩展“三维实体-约束图”来描述设计对象之
本文介绍了热力学法在测量泵效率中的应用,指出限制此方法进一步推广的一个最重要的影响因素即微小温差精确测量的难题,提出了一种可行的解决方法,即采用 VC++和汇编语言混合编程的方法实现软件滤波,建立了一种新型抗干扰实时数据采集软件,应用表明效果良好。
阐明了三维管网几何建模的原理 ,介绍了基于该技术的城市三维管网的可视化过程及几种加快图形显示的方法和管网系统的功能。该三维管网建模关键技术对于解决复杂的城市三维管网可视化快速建模提供了一种新思路 ,是建立三维管网系统的前提。
A new chance of developing traditional manufacturing industry comes forth with the development of network technology. Application technology oriented rapid response manufacturing in the distributed
This paper presents an integration methodology for ma chining and measuring processes using OMM (On-Machine Measurement) technology b ased on CAD/CAM/CAI integration concept. OMM uses a CNC machining
Process planning and scheduling are two major plann in g and control activities that consume significant part of the lead-time, theref ore all attempts are being made to reduce lead-time by automating
Today, the time-to-market for plastic products ar e getting shorter, thus the lead-time for making the injection mould is decreasin g. There is potential in timesavings in the mould design stage b
Concurrent engineering is currently an overwhelming t rend in product development since it takes the down-stream product development issues and product life-cycle issues into consideration in up-fro