共查询到20条相似文献,搜索用时 171 毫秒
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并联机床数字化创新设计研究 总被引:1,自引:0,他引:1
概述了并联机床创新设计的方法,介绍了并联机床总体方案设计,并联机构构型设计,构型综合,并联机床概念样机设计等过程中创新的主要内容;结合并联装备虚拟产品设计系统,进一步介绍了已实现的并联机床创新设计数字化环境,最后,通过典型的并联机床产品创新设计过程介绍了该数字化创新设计环境的应用。 相似文献
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并联机床虚拟产品设计系统及基本框架研究 总被引:14,自引:2,他引:12
在分析并联机床发展现状与设计环境所面临问题的基础上,结合虚拟制造技术,提出并联机床虚拟产品设计系统,分析了其工程应用价值,并初步构建了系统的框架结构,该系统框架包括机构概念设计与运动学设计、整机组合设计与动力学设计、作业过程仿真与作业性能分析三个平台,将为并联机术的设计者、研究者和用户提供良好的数字化集成环境。 相似文献
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CAPP与CAD的集成是实现CIMS的关键技术之一。基于过程特征的CAPP系统,采用过程特征和面向对象技术建立零件信息模型,通过过程特征建立特征、工艺、刀具、机床的联系,实现加工方法推理及机床、刀具的选择。 相似文献
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工艺规划和生产计划与控制集成过程中的资源决策 总被引:4,自引:2,他引:4
为了得到合理的工艺计划和车间生产计划调度结果,分析了计算机辅助工艺规划和生产计划与控制系统基于非线性工艺规划的并行集成原理,研究了二者集成过程中出现的资源选择问题。在资源决策过程中,首先确定加工某类零件需要的机床加工能力,然后根据车间计划系统反馈的加工资源实际情况确定车间中满足加工能力的机床,最后根据机床实时状态,计算车间每一个可用机床的优先指标。应用BP神经网络以及相关算法实现了二者集成过程中的资源决策。结果表明:利用BP神经网络以及相关算法可以有效地进行CAPP/PPC并行集成过程中的资源决策。 相似文献
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Amit Deshpande 《The International Journal of Advanced Manufacturing Technology》2013,64(9-12):1285-1296
Purchasing the correct machine tool can have strategic implications for manufacturers, because incorrect selection will eventually lead to quality and productivity losses. Prior research has concentrated on developing an analytical decision support system to select and compare machine tools based on machine functionality—not capability. Machine tool selection decision analyses concentrate on machine specifications and characteristics, which disregard the actual machine accuracy and dynamic performance. In this paper, the need to include machine accuracy and performance in terms of cycle time, tool wear, and surface finish is described with a case study of manufacturing a typical aerospace component using three different production methodologies on three computer numeric controller milling machines. Even though the three selected machine tools have similar technical specifications, which are adequate to manufacture the sample aerospace part, the machine accuracy and dynamic machining performance of the machines is significantly different. We conclude that it is necessary to include machine tool performance and production readiness attributes and not solely rely on the specifications when considering machine tool selection and purchasing. 相似文献
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基于虚拟样机技术的数控机床现代设计方法 总被引:4,自引:0,他引:4
讨论了基于虚拟样机技术的数控机床设计流程,分析了以三维实体建模软件PRO/E、机械动力学仿真软件ADAMS、大型有限元分析软件ANSYS和控制仿真软件MATLAB/SIMULIINK为核心的数控机床虚拟样机实现的集成软件平台,以数控钻铣床为例,将虚拟样机技术应用于机床的设计开发,对开创数控机床工程设计新方法具有重要的意义。 相似文献
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Kinematic calibration of gantry hybrid machine tool based on estimation error and local measurement information 总被引:1,自引:0,他引:1
Xiaoqiang Tang Jinsong Wang Men Gao 《The International Journal of Advanced Manufacturing Technology》2005,26(4):382-390
This paper presents the kinematic calibration of a four degrees-of-freedom (DOF) hybrid machine tool based on a novel planar 3-DOFs parallel mechanism and a long movement of the worktable. Closed-form solutions are developed for both the inverse and direct kinematics about the parallel mechanism. The error model is built and the mechanism accuracy is investigated. Two types of kinematic calibration method are proposed by a simple measurement device. The first type of calibration method is based on estimation error, and can easy improve the machine tool accuracy quickly by estimating the error trends. The second type of kinematic calibration method is based on local measurement information, which includes the position errors and does not include the pose errors of the machine tool. The calibration tests showed the effectiveness of the calibration methods, which can be useful for the similar types of parallel machine tool. 相似文献
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CH—2010/MONC开放式多用途数控系统 总被引:2,自引:0,他引:2
郇极 《世界制造技术与装备市场》1998,(2):58-59
本刊1995年第二期上曾登出同一作者所写的《在PC上实现的多轴多通道数控软件系统》一文,本文包括了作者开发工作的最新进展,读者阅读时可将两文相互参考。 相似文献
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S.L. Chen I.T. You 《The International Journal of Advanced Manufacturing Technology》2000,16(11):835-842
A parallel link manipulator is considered to be an important construction feature of machine tools in the future. To construct
a parallel link machine tool which can be practically applied for machining, the analysis of singularity is essential. A six
degrees-of-freedom 6-3-3 parallel link machine tool was considered to investigate the effects of the design parameters on
the singularity of the system. The U matrix method, which is based on the Pluücker coordinate system, is adopted to investigate
the singularity of the machine tool. The results show that a little variation of the orientation of the tool frame can effectively
avoid the singular condition during the machining processes. This result is important for the applications of parallel link
machine tools in real machining processes. 相似文献