Machining tests to identify kinematic errors on five-axis machine tools
Machining tests to identify kinematic errors on five-axis machine tools
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DOI：
10.1016/j.precisioneng.2009.09.007
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发表时间：
2010-07
影响因子：
3.6
通讯作者：
S. Ibaraki;M. Sawada;A. Matsubara;T. Matsushita
中科院分区：
文献类型：
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作者：
S. Ibaraki;M. Sawada;A. Matsubara;T. Matsushita
国家航空航天标准（NAS）979中规定的截头圆锥体的加工被广泛接受为五轴加工中心的最终性能测试。虽然它给出了一个很好的示范机器的整体加工性能，它通常是很难单独识别每个误差源的机器从测量的误差分布的成品工件。本文提出了一套五轴机床的加工试验，以确定其最基本的误差源之一，其运动误差。在每个加工图案中，使用直端铣刀进行简单的直侧切削。在建立五轴机床运动学模型的基础上，建立了工件几何误差与机床运动误差之间的关系。从成品工件的几何误差的运动学误差的识别实验证明在商业五轴加工中心，估计相比，估计的基础上球杆测量。
The machining of a cone frustum as specified in National Aerospace Standard (NAS) 979 is widely accepted as a final performance test for five-axis machining centers. Although it gives a good demonstration of the machine’s overall machining performance, it is generally difficult to separately identify each error source in the machine from the measured error profile of the finished workpiece. This paper proposes a set of machining tests for a five-axis machine tool to identify its kinematic errors, one of its most fundamental error sources. In each machining pattern, a simple straight side cutting using a straight end mill is performed. The relationship between geometric errors of the finished workpiece and the machine’s kinematic errors is formulated based on the kinematic model of a five-axis machine. The identification of kinematic errors from geometric errors of finished workpieces is experimentally demonstrated on a commercial five-axis machining center, and the estimates are compared to those estimated based on ball bar measurements.