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Zhang Y.,Northeastern University China | Gu R.,Northeastern University China | Han J.,China First Heavy Industries Dalian Design and Research Institute Co.
Applied Mechanics and Materials | Year: 2013

The performances of the turning center will be influenced by its thermal characteristics seriously, and accurately predict thermal characteristic of the machine tool is helpful to improve the design level. The headstock of a high precision turning center has been regarded as the research objects, and its thermal properties and influence on the performance of the turning center are studied. First based the finite element analysis model that has been constructed, the steady temperature field distribution and thermal equilibrium time of the headstock are calculated, and then the temperature field and thermal deformation have been calculated also, and analysis to identify the trend of the headstock heat distortion are also been done. Some of the key factors on the thermal performance of turning center are also studied. The study lays a foundation for the thermal error compensation of the headstock. © (2013) Trans Tech Publications, Switzerland. Source


Zhang Y.,Northeastern University China | Gu R.,Northeastern University China | Han J.,China First Heavy Industries Dalian Design and Research Institute Co.
Advanced Materials Research | Year: 2013

The performances of the high precision turning center will be influenced by the thermal characteristics of the headstock seriously, and accurately predict thermal characteristics of the headstock are helpful to improve the design level. The headstock of a high precision turning center produced by some plant has been regarded as the research objects of the paper. First the steady temperature distribution and thermal deformation of the headstock were calculated based the finite element analysis models of the headstock. Then the temperature sensitive points of the headstock were obtained by using the grey incidence analysis method. Finally the thermal error compensation model was built by using multiple linear regression method. The study lays a foundation for the thermal error compensation of the headstock of the turning center. © (2013) Trans Tech Publications, Switzerland. Source


Zhang Y.,Northeastern University China | Han J.,China First Heavy Industries Dalian Design and Research Institute Co. | Gu R.,Northeastern University China
Applied Mechanics and Materials | Year: 2012

The performances of the precision machine tool will be influenced by its thermal characteristics seriously, and accurately predict the thermal characteristic of the key component of the machine tool is helpful to improve the design level. The headstock of a high precision CNC lathes has been regarded as the research objects, and the thermal properties and its influence on the performance of the machine tool are studied. Finite element analysis model of the headstock has been constructed, and the simulation calculations of the steady temperature field distribution and thermal equilibrium time of the headstock are calculated, and then the analysis to identify the thermal deformation trends of the spindle assembly and the heat distortion of the headstock are also been done. Some of the key factors that have significant influence on the thermal characteristic of the high precision machine tools are also studied. The analysis reveals that the performances of the machine tool will be influenced by the hot asymmetric, the study lays a foundation for the optimization design and thermal error compensation of the spindle assembly. © (2012) Trans Tech Publications, Switzerland. Source

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