镗铣加工中心主轴系统热误差测量实验研究

发布时间：2018-10-05 09:33

【摘要】：目的通过对TX1600G复合式镗铣加工中心主轴部件热误差测量实验研究,找到主轴热关键点位置,检测其温升情况以及其热变形,进而确定产生热误差的主要影响区域.方法设计温度与热误差测量实验方案,采用红外热像仪布置和优化温度测点,并采集温度数据,对比各位置测点的温升情况确定热关键点;采用API主轴分析仪测量X、Y、Z三个方向的热变形值,对比数据进而确定热变形最大的方向.结果主轴在转速3 000 r/min下,当实验达到热平衡时,Z向热伸长最大;主轴中部的前后端轴承位置的温升较大,为热关键点,且Z向热变形曲线与温升曲线的趋势基本相同.结论加工中心主轴在实际运行中的误差主要是由温升引起的轴向热伸长误差,控制Z向伸长热变形能有效地提高加工精度.
[Abstract]:Objective through the experimental study on the thermal error measurement of the spindle parts in the TX1600G compound boring and milling machining center, the position of the heat key point of the spindle is found, the temperature rise and its thermal deformation are detected, and the main influence area of the thermal error is determined. Methods the experimental scheme of measuring temperature and thermal error was designed, the infrared thermal imager was used to arrange and optimize the temperature measuring points, and the temperature data were collected. The API spindle analyzer was used to measure the thermal deformation values in three directions, and the maximum direction of the thermal deformation was determined by comparing the data. Results under the rotating speed of 3 000 r/min, the maximum thermal elongation in Z direction was obtained when the heat balance was reached, and the temperature rise in the front and rear end of the spindle was the key point, and the trend of the Z direction thermal deformation curve was basically the same as that of the temperature rise curve. Conclusion the error of machining center spindle in actual operation is mainly caused by the axial thermal elongation error caused by temperature rise. Controlling the Z-direction elongation thermal deformation can effectively improve the machining accuracy.
【作者单位】：沈阳建筑大学机械工程学院;
【基金】：国家863计划项目(SS2012AA041303) 辽宁省科技计划项目(2013220017)
【分类号】：TG659

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