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我校于1958年开始研制钢球表面缺陷自动检验机,先后与重庆轴承厂合作,制造了JAO4型和ZO52K型等样机。这两台样机在结构上主要由机械、光电转换、电器等三部分组成。机械部分主要实现钢球表面的展开,使全部钢球表面均扫过光点,光电转换部分是在钢球表面扫过光点时,将钢球表面所引起光点反射光通量的变化转变为电讯号;电器部分是将电讯号放大,并根据讯号情况将钢球分为合格品与不合格品。到目前为止,检验机能比较稳定地检验二级钢球的表面缺陷,JAO4机一次检验正确性达90％,ZO52K机还能选出人工肉眼不易看到的裂纹球,宽度约0.02左右。
Our school began in 1958 to develop automatic testing machine for surface defects of steel balls, and successively cooperated with Chongqing Bearing Factory to manufacture prototypes of JAO4 and ZO52K. The two prototypes in the structure mainly by the mechanical, photoelectric conversion, electrical and other three parts. Mechanical part of the main surface to achieve the expansion of the ball, so that all the ball surface swept over the light spot, the photoelectric conversion part is swept across the surface of the ball when the light spot, the surface of the ball caused by light reflections luminous flux changes into telecommunications Number; electrical part of the signal is amplified, and according to the signal situation will be divided into qualified and unqualified steel ball. So far, the testing machine has been able to test the surface defects of secondary steel balls more stably. The correctness of JAO4 test once reaches 90%. The ZO52K machine can also choose the crack ball which is difficult to see by naked eyes, and the width is about 0.02.