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首页> 外文会议>IFToMM Symposium on Mechanism Design for Robotics >A Novel Kinematic Model of Spatial Five-Bar Linkage PPSPS for Testing Accuracy of Two-Axis Moving Table with Ball-Bar
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A Novel Kinematic Model of Spatial Five-Bar Linkage PPSPS for Testing Accuracy of Two-Axis Moving Table with Ball-Bar

机译：一种新型空间五杆连杆PPSP的运动模型，用于使用球杆测试双轴移动台的精度

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摘要

A novel kinematic model of spatial five-bar linkage PPSPS is presented to test the accuracy of the two-axis moving table by ball-bar for the first time in the paper. During motion measurement, the kinematic chain SPS of the ball-bar and the two prismatic pairs of the moving table constitute a five-bar linkage PPSPS. The mounting positions of the ball-bar and the directional offset between the two prismatic pairs correspond to the structure parameters of the mechanism, while the measured data of the ball-bar are regarded as the outputs of the mechanism. Hence, the mounting position errors of the ball-bar and the directional offset of the prismatic pairs are readily identified by kinematic synthesis of the PPSPS mechanism using the discrete data measured by the ball-bar, and then the errors of the moving table are obtained by the measured data minus the theoretical output of the mechanism. The model of spatial five-bar linkage PPSPS for ball-bar test of the machine table is independent of the mounting position errors and the assumption of planar motion.
机译：提出了一种新型的空间五杆连杆PPSP模型，以测试纸张第一次通过球杆的双轴移动台的精度。在运动测量期间，球杆的运动链SP和移动台的两个棱柱成对构成了五杆连接PPSP。球杆的安装位置和两个棱镜对之间的方向偏移对应于机构的结构参数，而球杆的测量数据被视为机构的输出。因此，通过使用由球杆测量的离散数据的PPSP机构的运动合成，容易地识别滚珠条的安装位置误差和棱柱形对的方向偏移，然后获得移动台的误差通过测量的数据减去机制的理论输出。机器台球杆测试的空间五杆连接PPSP的模型与安装位置误差和平面运动的假设无关。

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