飞机用的精密滚珠轴承必须进行检测,其中检测微小的表面缺陷和裂痕、斑点、接合缝、锈斑,以及其他如尺寸不到25微米的不均匀性等。用肉眼对这些检测是不实际的,因为观察有误差。现已设计和试验一种高速电光系统,它能每小时检测4000个样品。这种系统的方框图示于图1,包括精密激光器/扫描器和误差分析的电子分系统,以及受电光方法控制的自动部件馈送、定向和剔除。 Precision ball bearings for aircraft must be tested for minor surface imperfections and cracks, specks, joints, rust spots, and other inhomogeneities less than 25 microns in size. These tests are not practical with the naked eye because of errors in observation. A high-speed electro-optic system has been designed and tested to test 4000 samples per hour. A block diagram of such a system is shown in Figure 1, an electronic subsystem that includes a precision laser / scanner and error analysis, and automated component feeding, orientation and culling controlled by electro-optical methods.