精密剪切设备送料机构的虚拟开发研究

【作者】 王向丽；

【导师】 李有堂；

【作者基本信息】 兰州理工大学 ， 机械制造及其自动化， 2004， 硕士

【摘要】 在甘肃省科技攻关计划资助下，开展精密剪切设备的虚拟开发研究。以精密剪切设备创新设计为研究对象，以径向夹紧精密剪切设备为开发目标，研究创新产品虚拟开发的理论，开发精密剪切设备虚拟设计平台。 精密剪切设备具有承受载荷大，需具备力封闭结构，重要零件受力状态复杂，送料机构需要动态浮动等特性。总结精密剪切设备的工作原理，分析精密剪切设备的结构特点和对送料机构的要求，讨论精密剪切设备的工作步骤，探讨精密剪切机设备中送料机构的工作原理等问题。 以剪切设备的送料机构为研究对象，探讨产品虚拟开发的灵境环境和相关技术。主要讨论虚拟现实技术、建模技术、虚拟装配环境和送料机构的虚拟开发流程及开发平台。依托虚拟产品开发技术中的相关重点技术，如参数化建模技术、虚拟装配技术、仿真系统等，借助国际流行的中高端CAD／CAE／PDM软件，创建了PRO／ENGINEER——ADAMS的虚拟三维建模、仿真环境，实现了剪切机送料机构从数字化实体建模到虚拟样机仿真(动力学、运动学仿真)及分析的虚拟开发工作。 提出精密剪切设备送料机构虚拟开发的特征实体参数化建模技术和虚拟装配技术。讨论送料机构在Pro／E平台中的零件实体模型建立方法，通过PRO\E软件的单一数据库和全相关性，建立零件开发模块；讨论Pro／E的虚拟装配机理，通过装配约束的施加实现送料机构的初步装配，分析送料机构虚拟装配的具体过程和剪切设备的整体虚拟装配，重点分析了旨在消除滑块装配干涉的浮动料架的优化问题。 进行精密剪切设备送料机构的工作过程仿真。讨论动态仿真分析的关键技术——虚拟样机技术，实现从送料机构的实体模型到仿真模型的转化，实现送料机构装配体3D模型的转化，对夹具和送料机构的三维仿真模型进行相关动态仿真，分析仿真结果，从而为送料机构的优化奠定基础。更多还原

【Abstract】 Virtual development of the precision shears machine is studied with the support of key technology R&D program in Gansu province. Taking the innovative design of the precision shearing machine as the research object and the radial clamping shearing machine as the aim of development, the theory of virtual development of innovative product is studied. The platform of virtual design to precision shears machine is developed.Precision shearing machine has such key features as follows: carrying heavy load, having force closed structure, the complicated force state for important parts and dynamic floating sending mechanism. This paper do research on several aspects as follows:The working theory of the shearing machine and its sending mechanism is summarized; the feature of the structure of precision shearing machine and the demand for sending mechanism are analyzed; the working approach of shearing machine is shown.Taking the sending mechanism of the precision shearing machine as the research object, The virtual environment of product development and correlative technology is studied. Based on such crucial technologies as parametric modeling technology, Virtual Assembly Technology, simulation technology ect., a kind of VPD environment is built in this paper by means of popular-used CAD/CAE/PDM software: PRO/ENGINEER and ADAMS, in which 3D virtual models of parts and virtual assembly model of the sending mechanism of shearing machine are built in PRO/E and their dynamic simulation are realized in ADAMS.The modeling technology based on parametric feature and virtual assembly technology of the sending mechanism of the precision shearing machine is put forward. The modeling method of the parts in sending mechanism in PRO/E is studied. The developing module of parts is built by means of the single database and full connectivity of PRO/E. The mechanism of virtual assembly of sending mechanism is discussed, the primary assembly is realized through putting assembly constraints on part models. The concrete assembly process of sending mechanism and the whole shearing machine is finished. Moreover, the optimization of floating shelf aiming at eliminating the interference between sliding block and poles is studied as a highlight of this paper.The transfer of 3D model of clamp assembly and whole sending mechanism from PRO/E to ADAMS and their dynamic simulation and corresponding analysis in ADAMS are realized, which lays a foundation of the optimization of the sending mechanism of the precision shearing machine.更多还原