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以轴承约束状态下的机床主轴为研究对象,首先基于梁理论建立了机床主轴的运动方程,并采用有限元法得到主轴的矩阵形式的动力学方程,并以自由模态和实际工况条件下进行轴承约束状态下的主轴的模态分析。通过分析可知主轴在高速运转时的振动特性,并提出了新的设想;通过所建模型的分析,提高了产品初设计的可靠性,从而简化了成本,缩短了设计周期。研究结果为机床主轴系统或重载机械主轴系统的进一步优化设计和精度控制提供依据。
Taking the spindle constrained by the bearing as the research object, the equations of motion of the spindle of the machine tool are first established based on the beam theory. The dynamic equations of the spindle in the form of matrix are obtained by the finite element method. Under free modal and actual working conditions Perform the modal analysis of the spindle with the bearing restrained. Through the analysis we can see the vibration characteristics of the spindle at high speed and put forward a new idea; through the analysis of the model, the reliability of the initial design of the product is improved, which simplifies the cost and shortens the design cycle. The research results provide the basis for further optimization design and precision control of spindle system or heavy-duty mechanical spindle system.