公开(公告)号：US5310264A

公开(公告)日：1994-05-10

申请号：US26421

申请日：1993-03-04

申请人： Nozomu Mishima ,  Kiyoshi Mizuhara ,  Yuichi Okazaki ,  Norimitsu Ozawa

发明人： Nozomu Mishima ,  Kiyoshi Mizuhara ,  Yuichi Okazaki ,  Norimitsu Ozawa

IPC分类号： B23Q11/12 ,  B23B19/02 ,  B23Q1/70 ,  B23Q11/00 ,  B23Q11/14 ,  B32B19/02 ,  F16C32/06 ,  F16C29/04

CPC分类号： B23Q1/70 ,  B23Q11/0003 ,  F16C32/0614 ,  Y10S384/905

摘要： A method for improving the transient thermal properties of hydrostatic air main spindles for precision machine tools comprises the steps of installing an entire precision machine tool that has a main spindle with an air-lubricated hydrostatic bearing in a temperature-controlled constant-temperature environment, and raising the temperature of the lubricating air supplied to the air-lubricated hydrostatic bearing above the temperature of the constant-temperature environment until the thermal displacement of the main spindle reaches a target value, and thereafter lowering it below the temperature of the constant-temperature environment.

摘要翻译： 一种用于改善精密机床静液压主轴的瞬态热性能的方法包括以下步骤：在温度控制的恒温环境中安装具有主轴与空气润滑的静压轴承的整个精密机床，以及 提供供给到空气润滑的静液压轴承的润滑空气的温度高于恒温环境的温度，直到主轴的热位移达到目标值，然后将其降低到恒温环境的温度以下 。

公开(公告)号：US5390151A

公开(公告)日：1995-02-14

申请号：US37553

申请日：1993-03-24

申请人： Norimitsu Ozawa

发明人： Norimitsu Ozawa

IPC分类号： G01B11/00 ,  G01B7/312 ,  G01B11/27 ,  G01B21/00 ,  G01B21/24 ,  G01B11/10

CPC分类号： G01B7/312

摘要： Three non-contact type displacement sensors are positioned at the vertices of an equilateral triangle and disposed in opposition to an optical flat attached to the tip of a rotating shaft, while the optical flat is rotated at a slight tilt away from parallel. Undulation components synchronized with the rotation are detected from among signals indicating the relative displacement between the optical flat and displacement sensors during rotation, and the individual phase differences are found for two adjacent displacement sensors among the three synchronized components. As a result, three circles can be drawn through the positions of the centers of (two) adjacent displacement sensors, and the position of the center of rotation of the shaft coincides with the coordinates of the point of intersection of the three circles. Using a high-speed calculating device that finds the equations of two circles and their points of intersection from the output of the phase-difference detector, a display that displays the points of intersection of the circles, namely the coordinate position of the center of rotation, and hard-copy printers and the like, the position of the center of rotation can be detected quickly and automatically, displayed and provided as output.

摘要翻译： 三个非接触型位移传感器位于等边三角形的顶点处并且与安装在旋转轴的尖端上的光学平面相对设置，同时光学平面以平行的轻微倾斜旋转。 从表示旋转期间的光学平坦位移传感器和位移传感器之间的相对位移的信号中检测到与旋转同步的波动分量，并且在三个同步分量之间找到两个相邻位移传感器的各个相位差。 结果，可以通过（2）相邻位移传感器的中心的位置来画出三个圆，并且轴的旋转中心的位置与三个圆的交点相交。 使用从相位差检测器的输出找到两个圆的方程和它们的交点的高速计算装置，显示出显示圆的交点，即旋转中心的坐标位置 和硬拷贝打印机等，可以快速，自动地检测旋转中心的位置，并作为输出提供显示和提供。