It has been found that for the machine turning around the verticalaxis is the most critical state through an practical example.
通过实例分析，得到沿垂直轴向的临界稳定状态是掘进机临界稳定状态的基本结论。
2
A method for roll angular error measurement of NC machine tool verticalaxis was studied based on straightness measurement using laser interferometers system.
以激光干涉仪直线度误差测量为基础研究了数控机床垂直轴滚转角误差的检测方法。
3
Its symmetric axis is vertical to the vibrating direction of the controlled machine or structural object.