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以发动机为对象提出了一种以Unity 3D为平台创建虚拟环境,利用内置Tween功能添加发动机拆装路径实现其虚拟拆装的方法,并根据这些方法实现了基于Unity 3D的发动机虚拟拆装系统。同时利用虚拟拆装来代替实物拆装,可以解决发动机教学和拆装训练受到产品成本、拆装场所等条件限制这一难题,对于降低成本、提高效率具有较为重要的意义。 相似文献
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以工业机器人为对象进行虚拟教学系统开发,采用了Unity3D作为虚拟教学系统的开发引擎,使用SolidWorks、3Ds Max软件等进行工业机器人拆装场景建模和机器人拆装动画制作,以Photoshop软件进行UI界面设计,利用C#语言进行界面交互逻辑控制,完成系统登录、基础认知、爆炸展示、拆卸学习等功能,实现沉浸式教学。该系统对解决机器人拆装教学场地、设备有限的问题都有一定的现实贡献。 相似文献
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为解决传统的柴油机培训过程中存在的问题,基于Unity3 D平台设计了柴油机部件虚拟培训系统。系统通过NGUI(次世代界面)实现界面交互,运用SQLite数据库存储产品信息,利用U-nity3 D碰撞检测模拟训练。以沪东重机有限公司的柴油机部件为例,运用该系统进行教学培训,结果表明,相比于传统的单一教学方式,学员对虚拟现实教学更有兴趣,学习效率有所提高。 相似文献
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在计算机上实现机电产品的虚拟装配,需涉及到开发工具的选择、软件接口、零部件建模、几何模型的位姿变换、几何模型的碰撞干涉检查、动画与交互的实现等技术方法.通过对放顶煤液压支架虚拟装配技术的研究和应用,成功开发了“基于Web3D的放顶煤液压支架虚拟装配平台”,实现了在虚拟环境下液压支架的自动装配和分步装配.表明所采用的技术方法是可行的、软件开发是成功的,同时也为其他机电产品的虚拟装配提供了技术支持和参考. 相似文献
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提出了一种基于多体动力学计算引擎的虚拟装配仿真框架,并对该仿真框架涉及的多面体近似凸集分解算法、并行碰撞检测、仿真场景构建、仿真模型定义与处理等关键技术进行了研究。基于该仿真框架,维修装配人员可以完全沉浸在虚拟装配环境中,采用数据手套、光学跟踪器和其他虚拟外设与装配零部件进行交互,从而体验真实的维修装配感觉,达到装配维修训练与试装配的目的。最后,在一个多人沉浸式虚拟现实硬件平台下开发虚拟维修装配仿真原型系统,以齿轮箱的拆装作为实例,验证了该仿真框架的有效性,为装配操作人员提供了一种优良的沉浸式用户操作界面。 相似文献
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Shiguang Qiu Xiumin Fan Dianliang Wu Qichang He Deji Zhou 《The International Journal of Advanced Manufacturing Technology》2013,69(9-12):2355-2372
Real operators are the initiators in assembly and disassembly activities. They participate throughout the whole process. In this sense, as an avatar of a real operator, virtual human (VH) plays an important role in virtual assembly and maintenance simulations. After detailed analysis of interactive assembly and disassembly process, the function requirements for VH are defined. Based on the defined requirements, the following works are done. First, a real-time driving model is established with a dynamic constraint applied to support personalized human model driving. Then, a driving error model is proposed for quantitatively analysis of VH’s driving error coming from the motion capture system. After that, on the basis of constraint processing method, an interactive operation modeling method for VH is presented. This method deals with interactive operation modeling in scenarios where VH manipulates the product directly, VH manipulates tools, and VH manipulates the product using tools. Finally, an assembly simulation for automobile engine connecting rod caps is implemented and a user survey is carried out. The survey result demonstrates the feasibility and validity of the proposed model and method. 相似文献
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Zhenyu Liu Jianrong Tan 《The International Journal of Advanced Manufacturing Technology》2007,32(7-8):797-810
Interactive assembly based on virtual reality offers users an opportunity to interact with a virtual prototyping rather than
a physical one and to validate assembly performance of products in a realistic way. Such evaluations could be available very
early in the product development process ahead of any physical prototyping. The reduction or elimination of physical prototyping
needed for assembly performance validation can substantially shorten the product development cycle and reduce development
cost. Although virtual reality technology provides users an intuitive and immersive 3D interactive interface, it tends to
be inaccurate because humans have difficulty in performing precise positioning tasks. Therefore, it is necessary to implement
effective motion manipulation for assembly operations so that users can perform precise positioning efficiently in virtual
assembly systems. This paper presents a constrained behavior management approach that realizes assembly relationship recognition,
constraint solution and constrained motion for interactive assembly in a virtual environment. A constrained behavior manager
(CBM) has been developed and applied in virtual assembly systems. Test cases confirm that constrained behavior manipulation
proposed in this paper not only increases the efficiency of assembly relationship recognition, but also facilitates assembly
interaction in a virtual environment. 相似文献
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分析了虚拟装配系统的功能结构,建立了基于配合特征的集成装配模型,采用几何推理和装配知识相结合的方法进行装配序列规划,实现了三维环境下的交互式装配工艺规划与仿真。最后,给出了该系统在某输纸机构装配中的应用实例。 相似文献
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为了实现基于网络的可视化虚拟装配环境,笔者研究了Java3D与VRML相结合的方法。通过Loader接口将VRML造型文件导入到Java3D场景图中,借助Java语言的事件处理模型,并结合Java3D中的Interpolator内插器对象和Alpha对象,实现交互式添加、拆卸、移动和旋转等装配过程。最后以电机中的转子装配为例,给出了一个基于VRML-Java3D的交互式装配可视化环境。 相似文献
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Guan Qiang Zhang ShenshengCIT Lab Department of Computer Shanghai Jiaotong University Shanghai ChinaLiu Jihong Cao Pengbing Zhong YifangNational CAD Supporting SoftwareEngineering Research Center Huazhong University of Scienceand Technology Wuhan China 《机械工程学报(英文版)》2003,16(3):277-280,291
The cooperative work between human being and computer based on virtual reality (VR) is investigated to plan the disassembly sequences more efficiently. A three-layer model of human-computer cooperative virtual disassembly is built, and the corresponding human-computer system for stable virtual disassembly is developed. In this system, an immersive and interactive virtual disassembly environment has been created to provide planners with a more visual working scene. For cooperative disassembly, an intelligent module of stability analysis of disassembly operations is embedded into the human-computer system to assist planners to implement disassembly tasks better. The supporting matrix for stability analysis of disassembly operations is defined and the method of stability analysis is detailed. Based on the approach, the stability of any disassembly operation can be analyzed to instruct the manual virtual disassembly. At last, a disassembly case in the virtual environment is given to prove the validity of ab 相似文献
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机械零件三维造型及虚拟装配方法研究 总被引:2,自引:0,他引:2
在机械零件及机械系统的设计过程中,实现零件的快速造型和装配是关键的环节。介绍基于Pro/E环境,结合实际应用,研究零件三维模型的生成和对零件虚拟的装配方法,提高了产品设计质量,减少了设计工作量。 相似文献