本文介绍了北京第二光学仪器厂一台能刻宽100毫米的衍射光栅刻划机的减振基础的具体结构及其实用效果。该基础用拉力弹簧为弹性元件,其自振频率在垂直方向为1.5赫兹,在水平方向为0.77赫兹,阻尼衰减系数分别为0.18和0.09,该基础距厂内主干道仅约15米,机器可正常刻制30线/mm至1200线/mm的光 This paper presents a concrete structure and its practical effect of a vibration damping foundation of Beijing No.2 Optical Instrument Factory which can engrave a diffraction grating grating machine with a width of 100 mm. The basic tension spring for the elastic element, the natural frequency of 1.5 hertz in the vertical direction, the horizontal direction of 0.77 hertz, the damping attenuation coefficient was 0.18 and 0.09, the base from the main road plant only about 15 meters, the machine can be Normally engrave light from 30 lines / mm to 1200 lines / mm