Determining a prediction equation for thermal deformation of a CNC lathe using the experimental design
Determining a prediction equation for thermal deformation of a CNC lathe using the experimental design
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DOI：
10.1299/transjsme.20-00266
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Y. Ishino;H. Tachiya;Naohiko Suzuki;Y. Kaneko;T. Ise
中科院分区：
文献类型：
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作者：
Y. Ishino;H. Tachiya;Naohiko Suzuki;Y. Kaneko;T. Ise
提出了一种抑制数控车床热变形的方法。虽然机床的热变形往往会降低其精度，但它不一定能通过确保其刚度等来防止，因此，我们一直试图通过预测其变化并根据预测值调整刀具的位置来补偿热变形。先前提出的方法通过测量车身上几个特定点的温度变化来确定CNC车床中热变形的预测方程。然而，该方程需要根据是否使用切削液来交换预测方程的系数。因此，本研究试图提出一种方法来确定可用于加工与无切削液的系数。此外，所确定的系数需要针对诸如温度变化的宽范围的加工条件来确保。为了获得这样的系数与一些实验，本研究确定实际的切削条件，以获得系数与实验设计，并确认与确定的系数预测方程适用于广泛的加工条件下，包括温度和切削液。
This study presents a method suppressing thermal deformation of a computer numerical control (CNC) lathe. Although the thermal deformation of machine tools often reduces their accuracy, it cannot necessarily be prevented by ensuring their rigidities, etc. Therefore, we have been trying to compensate for the thermal deformation by predicting their variations and adjusting the position of the tool according to predicted values. The previously proposed method determined a prediction equation of the thermal deformation in the CNC lathe by measuring the temperature variations at a few specific points of the body. However, the equation needs to exchange the coefficients of the prediction equation depending on whether cutting fluid is used or not. Thus, this study tries to propose a method to determine the coefficients that can be used for machining with and without cutting fluid. Furthermore, the determined coefficients need to be ensured for a wide range of machining conditions such as temperature variations. In order to obtain such coefficients with a few experiments, the present study determines actual cutting conditions to obtain the coefficients with the experimental design and confirms the prediction equations with the determined coefficients to be applicable under wide machining conditions involving temperatures and cutting fluid.