共查询到17条相似文献,搜索用时 78 毫秒
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对土工离心机超重机器人的重要部件-Y轴横梁进行了有限元分析。采用三维十节点四面体结构实体单元进行网格的划分,得到20888个单元和43220节点的有限元模型。计算了Y轴横梁在不同离心惯性力作用下168种工况的变形,考虑了离心惯性力方向的影响,得到机器人在受到不同离心惯性力时横梁的变形图。 相似文献
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凌肃明 《机械制造与自动化》2006,35(4):14-16
为了计算锥形轴类零件的切削变形,推导出锥形变截面简支梁的弯曲变形通用表达式,应用C语言编程迅速求出最大变形量及最大变形位置。并用工艺参数控制法减少锥轴的切削变形误差,从而保证加工精度。 相似文献
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针对汽车钣金件铆接用机器人钳的最优化设计,通过理论设计分析与Pro/E软件3D建模,利用Pro/Mechanica有限元软件对钳体进行应力和应变分析,找出影响钳体设计的关键因子,最优化钳体设计模型,确保机器人钳体在满足工艺使用要求下重量最小。同时借助产品数据管理手段,进行标准化设计,通过修改关键尺寸快速实现新产品设计,极大地提升设计效率。 相似文献
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L. X. Che R. Q. Yang Y. Gu T. K. Xia 《The International Journal of Advanced Manufacturing Technology》2006,31(5-6):614-620
This paper presents a method of calculating the insulating safety distances for hot-line working robots at high voltage when dielectric is adulterated with conducts. Also, finite element method is adopted to calculate the electric field strength to find whether it is beyond the critical. The above methods have been applied to analyze the insulating safety of the robot for hot-line sweeping post insulators in a 220 KV substation. They have also been testified by experimentations. 相似文献
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《Measurement》2016
This paper analyses the kinematic parameters and the positioning accuracy of robot end effectors influenced by temperature factors. Temperature factors include robot self-heating and environmental temperature changes. This paper also builds the thermal distribution model and deformation model using finite element theory. A thermal compensation strategy is presented to validate the significant correlation between the robot kinematics parameters and previous thermal models mentioned above. It is convenient and suitable for industrial field. Thermal compensation is experimentally proved to adjust the position error of the end effectors by less than 0.1 mm. 相似文献
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采用虚拟样机技术,准确地测算出机器人大臂机构在整个运动周期中各关节的动力学参数,进而采用有限元方式对主要构件进行了受力分析,对初步设计结果得出了准确的判断,并对存在的问题进行修正. 相似文献
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Ming Hsu Tsai Wen Yi Lin Yu Chun Zhou Kuo Mo Hsiao 《International Journal of Mechanical Sciences》2011,53(12):1050-1068
The steady state deformation and infinitesimal free vibration around the steady state deformation of a rotating inclined Euler beam at constant angular velocity are investigated by the corotational finite element method combined with floating frame method. The element nodal forces are derived using the consistent second order linearization of the nonlinear beam theory, the d'Alembert principle and the virtual work principle in a current inertia element coordinates, which is coincident with a rotating element coordinate system constructed at the current configuration of the beam element. The rotating element coordinates rotate about the hub axis at the angular speed of the hub. The equations of motion of the system are defined in terms of an inertia global coordinate system, which is coincident with a rotating global coordinate system rigidly tied to the rotating hub. Numerical examples are studied to demonstrate the accuracy and efficiency of the proposed method and to investigate the steady state deformation and natural frequency of the rotating inclined beam. 相似文献