工程设计学报2018，Vol.25Issue(2)：223-229,7.DOI:10.3785/j.issn.1006-754X.2018.02.014
用于相位衬度CT成像的大型精密转台轴系设计与分析
Design and analysis of large-size precision turntable shafting for phase contrast CT imaging
摘要
Abstract
A large-size precision turntable was designed for the requirement of high resolution and high stability of the X-ray phase contrast CT(computed tomography)imaging.The turntable a-dopted welding structure and dense ball bearing support,with the feature of light weight,low re-sistance and high rotary precision.T he turntable shafting's structure design and process route were introduced.The accuracy index of the shafting was decomposed according to the motion error allowed in the imaging field.The static and dynamic performance of the turntable was stud-ied by static analysis,inertial release analysis and modal analysis,w hich proved that the structure rigidity was reasonable.Combined with the precision analysis,the geometric error of important components of the shafting was distributed,and the synthesis error satisfied satisfied with the requirement of index.Finally,the shafting of the turntable prototype was tested.The results showed that the turntable met the requirements of phase contrast CT imaging.The design of lightweight welding structure and the method of shafting accuracy analysis have some reference for large-size turntable shafting development.关键词
相位衬度成像/大型精密转台/焊接转台/轴系设计/误差分析Key words
phase contrast imaging/large-size precision turntable/welding turntable/shafting design/error analysis分类
机械制造引用本文复制引用
曾维俊,于广东,雷恒波,王钟周,孙海旋..用于相位衬度CT成像的大型精密转台轴系设计与分析[J].工程设计学报,2018,25(2):223-229,7.基金项目
国家重大科研装备研制项目(CZBZDY20140002) （CZBZDY20140002）
吉林省科技攻关计划项目(20160204026YY) （20160204026YY）
