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多轴数控机床精度综合方法研究
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国家科技重大专项(2009ZX04001-141)


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    摘要:

    为了合理设计机床传动轴的公差值,采用误差补偿系数与价值分析法相结合的方法,对传统机床的直线轴进行了精度综合研究。首先对数控机床直线轴进行了标定与补偿工作,根据补偿效果得到了各个误差的补偿系数。然后把补偿系数与价值分析法相结合,对价值分析法进行了改进,并对数控机床的x、y、z直线轴进行了精度综合研究。结果表明:利用改进的价值分析法对机床直线轴进行精度综合,可以在一定程度上放宽公差值的设计范围,甚至比经验值增大50%左右,从而降低了机床的制造成本。该方法可以拓展到机床转动轴的精度综合分析,也适用于其他类型机床的精度综合研究。

    Abstract:

    In order to reasonable design tolerances for axes of machine tool, accuracy synthesis on linear axes of traditional machine tool is researched by using the method of combining compensation coefficient and value analysis method. Firstly, the calibration and compensation of the x、y、z linear axes for the CNC machine tool were carried out, and the compensation coefficients for each error were obtained according to the compensation effect. Secondly, the value analysis method was improved by combining compensation coefficient and the value analysis method, and accuracy synthesis of x、y、z linear axes of the machine were researched. The results indicate that: the design range of tolerance can be wider at a certain extend by the proposed method for accuracy synthesis, even increased by about 50% than empirical value, and hence the manufacturing cost of machine tool is reduced. The proposed method can be developed for accuracy synthesis analysis of rotation axes, and also suitable for that of other type of machine tool.

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李新友,徐寅,李强,陈乃玉,李刚.多轴数控机床精度综合方法研究[J].机床与液压,2014,42(19):18-22.
.[J]. Machine Tool & Hydraulics,2014,42(19):18-22

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  • 在线发布日期: 2015-01-28
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