共查询到18条相似文献,搜索用时 187 毫秒
1.
重点介绍传统机床夹具设计的特点和虚拟技术的概念,通过虚拟技术在机床夹具设计中的应用和实现,以期进一步提高机床夹具设计的柔性和精度;进一步提高生产效率和经济效益。 相似文献
2.
机床夹具虚拟设计系统研究 总被引:5,自引:0,他引:5
本文简要介绍了虚拟制造技术的概念和研究夹具虚拟设计系统的思路。较详细地论述了系统的总体结构和功能也提出了系统功能的实现方法,最后分析了夹具虚拟设计系统的应用前景。 相似文献
3.
4.
孙淑婷 《机械工程与自动化》2018,(2)
虚拟装配技术是虚拟现实技术在机械制造领域的重要应用分支,虚拟装配有自底向上和自顶向下两种装配方法。主要采用自顶向下的方法,完成了扇形工件上钻三孔的夹具设计。实践证明,用虚拟装配技术设计专用夹具较传统的夹具设计方法有很多优点,缩短了夹具的设计周期,为专用夹具提供了一种高效的设计途径。 相似文献
5.
6.
7.
虚拟样机技术在制造业中的应用及研究现状 总被引:2,自引:0,他引:2
虚拟样机技术以计算机技术为依托,综合多学科技术为产品全生命周期的设计和评估提供技术支持.设计者可在虚拟环境中实现产品设计和产品特性分析,使之能够快速响应市场要求,这打破了传统的设计方式,缩短了设计时间节约了设计资本,尤其在复杂产品的设计中优势更加明显.目前虚拟样机技术在国内外已被广泛采用,具有广泛的应用前景.本文介绍了虚拟样机的技术框架,通过虚拟样机技术在制造业中的应用实例简述了虚拟样机技术在制造业的发挥的作用,详细分析了虚拟样机技术的优势和不足,阐述了虚拟样机技术目前的研究情况. 相似文献
8.
面向大规模定制的计算机辅助夹具设计研究 总被引:1,自引:1,他引:0
研究了大规模定制生产下夹具设计的理论支持,提出了夹具的虚拟设计,规划了大规模定制生产环境下夹具设计的总体框架结构及设计流程。以汽车同步器产品的大规模定制生产所用夹具为对象,给出了应用实例。 相似文献
9.
10.
虚拟制造作为目前制造业最具挑战性的领域,发展速度惊人。以立式钻床夹具为例,在UG软件基础上介绍了夹具设计及三维建模的方法,并成功创建了夹具三维模型;并采用自底向上的装配方式完成夹具的装配;分析了夹具的装配顺序及路径规划;探讨了夹具装配干涉碰撞技术;最后研究了虚拟仿真技术,实现了机床夹具的快速装配,这样提高了设计质量,缩短了开发周期,提高了企业对新产品的自主研发能力和竞争,充分体现了虚拟装配技术的优越性。 相似文献
11.
12.
分析了基于快速成型的快速夹具设计的研究背景,提出了基于快速成型的快速夹具设计方法,给出了快速夹具的组成,并对关键部分进行详细阐述。在此基础上,在UG/OPENAPI的平台上开发了基于参数化的快速夹具设计系统,并进行了验证。 相似文献
13.
Fixtures are tooling devices used to locate, support and hold workpieces during a manufacturing process. The major purpose
of a computer-aided fixture design (CAFD) system is to provide a fixture design based on fixturing principles and workpiece
information. Interference checking between the machining tool and fixture units, as well as between fixture units, is one
of the important functions of automated fixture design. This paper presents a fast interference checking algorithm for automated
modular fixture design validation. It is based on the study of the geometric characteristics of modular fixture components
and the machining tool. The fixture component model is simplified into a 2D contour model with height information. The tool-path
model is represented by a moving dot for 3-axis operations, or a moving line segment in 5-axis operations, as the fixture
component model is different from the popular collision detection procedure using swept volume and is more efficient for fixturing
verification. Application of this method will greatly reduce the computation complexity for fixturing interference checking.
The method is implemented with a CAFD system. An example is given at the end of the paper. 相似文献
14.
15.
16.
介绍一种专用于镗床的可调整胎具设计方案,该胎具针对性强,可用于不同型号的轴承座铣削外表面或者钻孔加工,可以有效减少轴承座装夹定位的时间。 相似文献
17.
18.
G.H. Qin W.H. Zhang M. Wan G.H. Qin 《The International Journal of Advanced Manufacturing Technology》2006,29(3-4):349-359
In manufacturing engineering, localization accuracy is a key concern in the design of a fixture to specify a locating scheme
and tolerance allocation. This paper presents a general analysis methodology that is able to characterize the effects of localization
source errors based on the position and orientation of the workpiece. From this methodology, a fixture model is formulated
by taking into account the overall errors among the system consisting of the workpiece and the fixture in the design of the
fixture locating scheme. With this model, the locating principle and a criterion of the robust optimal design are then proposed
to improve the localization quality of the fixture. Some examples are provided and allow for a detailed discussion about how
to carry out the optimal design of the locating scheme. A comparative study is also made between the optimal solution and
the empirical one. Finally, an experiment is made to validate the fixture locating scheme for a cylindrical workpiece. We
conclude that this robust design method effectively achieves stable machining precision in workpieces. 相似文献