滚珠轴承钢球的精度是很高的,各种尺寸误差一般均在0.1μm 以内。为此日本计量研究所精密测量研究室第一机械检测科,开发了一种使用钢球的测量直角的方法。测量原理如图1所示。选择两个直径稍微不同的钢球,把直径为 d 的小球固定在平台上(以下称固定球),让直径为 D(D>d)的大球在平台上方相对平台作平行微动(以下称移动球)。固定球和移动球相对平台处在大体垂直的位置。如图1所示,把被测 Ball bearing ball accuracy is high, a variety of size errors are generally within 0.1μm. To this end, Japan Institute of Metrology Precision Measurement Laboratory, the first mechanical inspection department, developed a method of measuring the use of steel ball right angle. Measuring principle shown in Figure 1. Select two balls of slightly different diameter to fix the ball with the diameter d on the platform (hereinafter referred to as the fixed ball) and let the ball with the diameter D (D> d) be parallel to the platform above the platform Hereinafter referred to as moving the ball). The fixed ball and moving ball relative to the platform in a generally vertical position. Shown in Figure 1, the measured