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首页> 外文期刊>Advanced Science Letters >Parameters Calibration and Mode Construction for Computer Numerical Control Grinding Machine Using FEM and Laser Measurement
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Parameters Calibration and Mode Construction for Computer Numerical Control Grinding Machine Using FEM and Laser Measurement

机译:有限元和激光测量的计算机数控磨床参数标定和模式构建

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摘要

The high precision Computer Numerical Control (CNC) grinding machine affect the processing quality, the main influences of the precision for grinding machine tool included: (1) the tolerance of assembly; (2) the structural strength; (3) materials stability and machining accuracy of assembly. In this paper, the Finite Element Method (FEM) was used to analyze structure strength and vibration mode analysis for complex CNC Internal-external cylindrical grinding machine, and applied mode frequency experiment to verify the accuracy, and aimed at the weakness of the regional structure to improve the strength. The laser interferometer was applied to execute each item of precision measurements with respect to machining accuracy and assembly error. The values of the original measuring data will be treatment and analysis, a compensation value is transferred to machine to compensate the error through self-writing program in the machine, the purpose of feedback compensation is to achieve precise calibration. The structural reinforcement was made for head, body and spindle of CNC grinding machine, the temperature rising of X, Y and Z axis and spindle also obtain the compensation, so that the machining accuracy of original CNC grinding machine can achieve 3-4 μm, and the repeatable accuracy is within 2μm.
机译:高精度计算机数控(CNC)磨床影响加工质量,对磨床精度的主要影响包括:(1)装配公差; (2)结构强度; (3)材料的稳定性和装配的加工精度。本文采用有限元法对复杂的数控内外圆磨床的结构强度和振动模式进行分析,并通过模态频率实验验证了精度,针对区域结构的薄弱环节提高强度。激光干涉仪用于执行关于加工精度和组装误差的各项精密测量。原始测量数据的值将被处理和分析,补偿值通过机器中的自写程序传送到机器以补偿误差,反馈补偿的目的是实现精确的校准。对数控磨床的头部,主体和主轴进行了结构加固,X,Y,Z轴和主轴的温升也得到了补偿,使原始数控磨床的加工精度可达到3-4μm,重复精度在2μm以内。

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