スピンドルロータのボルト締結部における等価剛性(機械力学, 計測, 自動制御)
スピンドルロータのボルト締結部における等価剛性(機械力学, 計測, 自動制御)
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主轴转子螺栓连接当量刚度（力学、测量、自动控制）
DOI：
10.1299/kikaic.74.1702
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
沼崎 知宏
中科院分区：
文献类型：
--
作者：
山本 浩;沼崎 知宏
本文对主轴转子结合层的等效刚度进行了研究。试验转子由一个轴颈部分和两个用螺栓连接的推力板组成。每个止推板和轴颈部分用八个M4螺栓夹紧，这些螺栓以45度的间隔布置在圆周上，具有均匀的夹紧扭矩。为了改变螺栓连接表面的粗糙度，对螺栓连接的各个表面分别采用两种方法进行处理。基于模态分析理论，提出了节点层法向和切向等效刚度的识别方法，可以识别节点层两种表面状态下的等效刚度。利用识别出的等效刚度，可以计算出识别过程中未用到的高阶固有频率，计算结果与实测的高阶固有频率吻合较好。在连接层的两种表面状态下，法向刚度和切向刚度均随螺栓夹紧力矩的增大而增大。另一方面，在所有的夹紧力矩条件下，法向刚度和切向刚度随着表面粗糙度的减小而增大。此外，切向刚度与法向刚度的比值随着表面粗糙度的减小而减小。
This paper describes an investigation of equivalent stiffness of a joint layer of a spindle rotor. The test rotor is composed of a journal part and two thrust plates bound with bolts. The each thrust plate and the journal part are clamped with eight M 4 bolts which are arranged on the circle at 45 degrees intervals with a uniform clamping torque. The each surface of bolted joints is processed by two methods in order to change the roughness of surface. We propose the identify procedure of the equivalent stiffnesses of the joint layer in normal and tangential direction based on the modal analysis theory and we can identify the equivalent stiffness in two surface conditions of joint layer. By using the identified equivalent stiffnesses, we can calculate natural frequencies of higher order which are not used in the identified procedure and the calculated ones are fairly good well with the measured natural frequencies of higher order. In two surface conditions of the joint layer, the normal stiffness and the tangential stiffness increase as the clamping torque of each bolt increases. On the other hands, in all condition of clamping torque, the normal stiffness and the tangential stiffness increase as the roughness of surface decreases. Moreover, the ratio of the tangential stiffness to the normal stiffness decreases as the surface of roughness decreases.