根据美国NIF点火基准靶REV4.0要求, 对半腔套装工艺进行了具体的参数分析, 确定了半黑腔与冷冻罩的铝套筒过盈配合公差带等关键参数, 制定了装配系统技术指标, 设计了系统方案, 研制了实验样机。该样机具有12个电控台, 重复定位精度达到0.3 μm和0.01°, 并配备激光测头和6轴微力传感器, 对靶件姿态与套装过程中的受力情况进行检测, 可完成半黑腔套入与入射孔衬垫装配两道工序。利用该样机对模拟靶件进行了装配实验, 半黑腔与铝套筒同轴度为8 μm, 轴向与径向夹角优于0.5°, 验证了装配工艺与系统功能的有效性。

According to the assembly accuracy of NIF REV4.0 for fusion ignition targets, the assembly process and precision robotic system for hohlraum assembly were analyzed. The tolerance range of the hohlraum inserted into the TMP (thermal mechanical package) was determined. The precision robotic system was designed. There were 12 motorized stages, one laser sensor and one 6-axis force/torque sensor in the system. The repeatabilities of the motorized stages were 0.3 μm and 0.01°. The level attitude and the force status of the targets could be detected by the laser sensor and the 6-axis force/torque sensor. Hohlraum and LEH insert were assembled by the system. The axis distance and angle of hohlraum and TMP were less than 8 μm and 0.5°. The experiment results of the hohlraum assembly by the system verified the feasibility of the assembly process and the system functions.