超高速磨削电主轴热特性分析
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摘要
为了探明超高速磨削电主轴的内部温度情况,以及各部分温升引起的部件变形,文章以内装同步电机电主轴为研究对象,分析了其热量传递过程,计算了电主轴电机定子和轴承的发热量及各部分对流换热数,并对其稳态温度场、瞬态温度场及热-结构耦合场进行了分析。分析结果表明电主轴内部温度分布是极不均匀的,前后轴承与定转子之间存在很大的温差,各部件不同的热膨胀量造成了主轴轴头部分的热变形,影响了电主轴的精度和稳定性。
In order to find out the internal temperature of the ultra-high-speed grinding electric spindle and the deformation of the components caused by the temperature rise of each part, the paper takes the electric spindle of the synchronous motor as the research object, analyzes the heat transfer process, and calculates the heat generation of the stator and bearing of the electric spindle motor and the number of convective heat transfer of each part, and the steady-state temperature field, transient temperature field and thermal-structure coupling field were analyzed. The analysis results show that the internal temperature distribution of the electric spindle is extremely uneven. There is a large temperature difference between the front and rear bearings and the stator and rotor. The different thermal expansion of each component causes the thermal deformation of the spindle shaft part, which affects the accuracy and stability of the electric spindle.
In order to find out the internal temperature of the ultra-high-speed grinding electric spindle and the deformation of the components caused by the temperature rise of each part, the paper takes the electric spindle of the synchronous motor as the research object, analyzes the heat transfer process, and calculates the heat generation of the stator and bearing of the electric spindle motor and the number of convective heat transfer of each part, and the steady-state temperature field, transient temperature field and thermal-structure coupling field were analyzed. The analysis results show that the internal temperature distribution of the electric spindle is extremely uneven. There is a large temperature difference between the front and rear bearings and the stator and rotor. The different thermal expansion of each component causes the thermal deformation of the spindle shaft part, which affects the accuracy and stability of the electric spindle.
引文
[1] 蔡光起.磨削技术现状与新进展[J].制造技术与机床,2000(5):10-11.
[2] Bryan J.International status of thermal error research[J].Annals of the CIRP,1990,39(2):645-656.
[3] 坦野义昭.机床热变形对加工精度的影响[J].机械と工具,1997(10):1841-1844.
[4] 黄晓明.高速电主轴热态特性的有限元分析[D].广州:广东工业大学,2003.
[5] 王志强.基于ANSYS的高速电主轴的温度场分析[D].兰州:兰州理工大学,2011.
[6] 张明华,袁松梅,刘强.基于有限元分析方法的高速电主轴热态特性研究[J].高速加工技术,2008(4):29-32.
[7] 樊红卫,吴腾庆,刘恒,等.冷却润滑参数对电磁自平衡电主轴温升影响的研究[J].组合机床与自动化加工技术,2018(8):46-49.
[8] 文怀兴,王美妍.高速电主轴热态性能的有限元分析及温升控制[J].组合机床与自动化加工技术,2010(9):52-55.
[9] Abuthakeer S,Mohanram PV,Kumar G M.Dynamic characteristics analysis of high speed motorized spindle[J].Annals of the Faculty of Engineering Hunedoara,2012,10( 3) :207-212.
[10] 李特,芮执元,雷春丽,等.考虑气隙变化的高速电主轴热特性仿真[J].浙江大学学报 ( 工学版) ,2015,50(5) :941-948.
[11] 王保民.电主轴热态特性对轴承—转子系统动力学特性的响研究[D].兰州:兰州理工大学,2009.
[12] 王鹏.高速磨削电主轴热-结构耦合分析[D].太原:太原理工大学,2016.
[13] 吕晶,袁江,刘传进,等.高速高精密立式加工中心主轴热态特性分析[J].组合机床与自动化加工技术,2014(10):14-16.
[14] 张政.高速电主轴热特性分析及试验研究[D].哈尔滨:哈尔滨工业大学,2015.
[2] Bryan J.International status of thermal error research[J].Annals of the CIRP,1990,39(2):645-656.
[3] 坦野义昭.机床热变形对加工精度的影响[J].机械と工具,1997(10):1841-1844.
[4] 黄晓明.高速电主轴热态特性的有限元分析[D].广州:广东工业大学,2003.
[5] 王志强.基于ANSYS的高速电主轴的温度场分析[D].兰州:兰州理工大学,2011.
[6] 张明华,袁松梅,刘强.基于有限元分析方法的高速电主轴热态特性研究[J].高速加工技术,2008(4):29-32.
[7] 樊红卫,吴腾庆,刘恒,等.冷却润滑参数对电磁自平衡电主轴温升影响的研究[J].组合机床与自动化加工技术,2018(8):46-49.
[8] 文怀兴,王美妍.高速电主轴热态性能的有限元分析及温升控制[J].组合机床与自动化加工技术,2010(9):52-55.
[9] Abuthakeer S,Mohanram PV,Kumar G M.Dynamic characteristics analysis of high speed motorized spindle[J].Annals of the Faculty of Engineering Hunedoara,2012,10( 3) :207-212.
[10] 李特,芮执元,雷春丽,等.考虑气隙变化的高速电主轴热特性仿真[J].浙江大学学报 ( 工学版) ,2015,50(5) :941-948.
[11] 王保民.电主轴热态特性对轴承—转子系统动力学特性的响研究[D].兰州:兰州理工大学,2009.
[12] 王鹏.高速磨削电主轴热-结构耦合分析[D].太原:太原理工大学,2016.
[13] 吕晶,袁江,刘传进,等.高速高精密立式加工中心主轴热态特性分析[J].组合机床与自动化加工技术,2014(10):14-16.
[14] 张政.高速电主轴热特性分析及试验研究[D].哈尔滨:哈尔滨工业大学,2015.