一、前言以往对曲柄式压力机基础作动力计算时,只要求计算垂直振动,即计算在完成锻压(或冲压)工序后,由于立柱的弹性变形突然消失所引起的垂直振动。两年前,我们通过第二汽车制造厂锻造分厂四个锻压机基础的加固和十几个锻压机基础的振动测定,发现除上述垂直振动外,还应计算锻压机在离合器接合后飞轮带动曲轴转动及滑块下行阶段的不平衡扰力所产生的垂直及水平与廻转振动。后者有时大于前者,不能 I. Foreword In the past, crankshaft presses were used to calculate the vertical motions. Only the vertical vibrations were calculated. That is, the vertical vibrations caused by the abrupt disappearance of the elastic deformation of the columns after the forging (or stamping) process was completed were calculated. Two years ago, we strengthened the foundation of four forging presses and the vibration of more than a dozen forging presses based on the Forging Plant’s second forging plant. We found that in addition to the above vertical vibrations, the forging press should be calculated as the flywheel driven by the clutch Vertical and horizontal and vertical vibrations caused by unbalanced disturbances of crankshaft rotation and slider descent. The latter is sometimes greater than the former, can not