论文部分内容阅读
在大口径非球面加工中,采用能动磨盘进行加工,加工效率较高,但能动磨盘加工也会存在着些问题,如严重的边缘效应因为磨盘和工件不能完全的吻合,加工后会存在环带误差和局部误差,表现为镜面的误差分布不对称,也就是通常所说的存在着严重的慧差。在能动磨盘加工后,可以采用机械手小工具对工件的环带进行平滑去除镜面局部高点,修正镜面环带误差,使得镜面误差成对称分布,可以更好地利用能动磨盘进行加工。介绍了机械手小工具的结构,通过实际的加工情况建立小工具磨盘的去除函数模型,并进行了仿真计算。通过与实际去除环带的实验对比,理论仿真和实际加工吻合较好,取得了显著的修正效果。
In large-diameter aspheric processing, the use of active disc processing, processing more efficient, but the active disc processing there will be some problems, such as the serious edge effect because the disc and the workpiece can not be completely matched, there will be processing after the ring Errors and local errors, the performance of the mirror error distribution is not symmetry, which is commonly referred to as there is a serious coma. After the active disc processing, you can use the robot gadget to smooth the workpiece ring to remove the local high mirror, the correction of the mirror ring error, making mirror error symmetrical distribution, you can make better use of active grinding disc for processing. The structure of robot gadget is introduced, the removal function model of gadget disc is established through the actual processing, and the simulation calculation is carried out. Compared with the actual removal of the annular zone experiment, the theoretical simulation is in good agreement with the actual machining and a significant correction effect has been achieved.