论文部分内容阅读
圆度仪有两种类型:图1为转轴式圓度仪;图2为转台式圆度仪。它们的测量原理是,当工件被测截面和转轴或转台的主轴轴线垂直,且被测截面轮廓中心和轴线重合时,在主轴旋转过程小,接触于工件被测截面轮廓的测头在截面半径方向上的位移,即反映被测截面轮廓的不圆度。很明显,主轴轴线在其与测量头联线方向上的径向运动——主轴径向误差将直接引入不圓度测量结果小,即圓度仪的量值是工件被测截面轮廓不圓度和主轴径向误差的迭加。当圆度仪主轴有足够重复精度,可用叙述的方法,从不圆度记录曲线中把两者分离,从而获得主轴径向误差。
There are two types of roundness meter: Figure 1 is a spindle roundness meter; Figure 2 is a rotary table roundness meter. Their measuring principle is that when the measured section of the workpiece is perpendicular to the spindle axis of the rotating shaft or turntable and the center of the measured section coincides with the axis, the rotation of the spindle is small and the contact with the measured profile of the workpiece cross-section radius The displacement in the direction, that is, the out-of-roundness of the contour of the measured section. Obviously, the radial movement of the spindle axis in the direction of its line of contact with the measuring head - the radial error of the spindle will be introduced directly into the result of the out-of-roundness measurement. That is, the magnitude of the circularity meter is the out-of-roundness And the radial error of the spindle superposition. When the roundness of the spindle with sufficient repeatability, available narrative method, from the non-circularity of the recording curve to separate the two, so as to obtain the spindle radial error.