针对国内还未制造出功能完善的钢球外观检验机现状，我们设计出了一种基于可编程控制器的钢球外观检验控制系统。

We aimed at the status quo that our country had not produced one machine including all the functions of steel-ball facies inspection and designed the system based on PLC.

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钢球硬度检验方法简单， 被检验的钢球无任何损伤，分检正确率100％；

The method for testing the hardness of the steel balls is simple, the tested steel balls can not be damaged, and the sorting correct rate is 100 percent;

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