半刚性磨具主轴动态特性分析与修整试验研究

Dynamic characteristic analysis of semi rigid grinding tool spindle and dressing test

为了提高轴承类零件内、外表面的轮廓精度,设计了一种新型半刚性磨削工具主轴结构,通过对主轴进行分析和模态试验,研究主轴系统频率和振型,得出半刚性磨具与主轴接触面刚度较差,导致主轴端面摆动弯曲的结论,为半刚性聚氨酯磨具主轴的优化设计提供了理论依据和方法。最后采用这种新型的半刚性聚氨酯装置进行修整试验,得到较好的表面粗糙度,验证了该方法的可行性和有效性。

In order to improve the inner and outer surface contour accuracy of the bearing parts. Design a new semi rigid grinding tool spindle structure, through the analysis and modal test of main spindle system, study on the spindle system frequency and vi- bration type. The poor rigidity of the contact surface between the rigid abrasive tool and the main shaft is obtained, leading to the swing of the spindle end bending. That provides a theoretical basis and methods for semi-rigid polyurethane grinder spindle opti- mization design. Finally, using the device for dressing test, the surface roughnesses is better, and validate the feasibility and effec- tiveness of the proposed method.