Huang Xuepeng, Wang Zhenzhong, Shen Bingyi, Lei Pengli
Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, China.
Shenzhen Research Institute of Xiamen University, Shenzhen 518057, China.
Micromachines (Basel). 2021 Nov 13;12(11):1393. doi: 10.3390/mi12111393.
Laser fusion research requires a large number of high-precision large-diameter aspherical components. To improve the grinding efficiency in the component production process, the manual operation time during the grinding process needs to be reduced. The grinding process requires the installation of the dressed grinding wheel onto the grinding machine spindle, and the off-line dressing results in installation errors during the loading and unloading process, which requires more time for manual alignment. To achieve self-aligning, the circumferential contour of the grinding wheel was first restored by the reversal method, then noise reduction and circle fitting were performed to obtain the eccentricity value and eccentricity position between the flange and the spindle, and finally, the flange was adjusted finely by three piezoelectric actuators installed inside the flange to reduce the eccentricity. Three repetitive experiments were conducted to verify that the self-aligning flange can reduce the eccentricity value by retracting the piezoelectric actuators so that the proper alignment between the flange and the spindle could meet the requirements; the average eccentricity value of the three experiments decreased by 74%, which greatly improved the efficiency of the grinding wheel alignment.
激光核聚变研究需要大量高精度大口径非球面元件。为提高元件生产过程中的磨削效率，需要减少磨削过程中的人工操作时间。磨削过程要求将修整后的砂轮安装到磨床主轴上，离线修整会导致装卸过程中出现安装误差，这需要更多时间进行人工对中。为实现自动对中，首先通过反转法恢复砂轮的圆周轮廓，然后进行降噪和圆拟合以获得法兰与主轴之间的偏心值和偏心位置，最后通过安装在法兰内部的三个压电致动器对法兰进行精细调整以减小偏心。进行了三次重复实验，以验证自动对中法兰可通过缩回压电致动器来减小偏心值，使法兰与主轴之间的正确对中能够满足要求；三次实验的平均偏心值降低了74%，大大提高了砂轮对中的效率。
