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请教“防错法”。。。。

我做体系基本上属于自我摸索。。。。
碰到纠正和预防措施报告中有这么一栏叫做采用防错法,是和否两项我要么不填,要么填个否,因为我不知道防错法是个什么意思,希望知道的朋友能说的详细点教教我好么。关于防错法的概念,运用在什么地方等等,有相关的连接也好哦。
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richwell (威望:5)

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Poka-yoke is Japanese for mistake-proofing. These devices are used either to prevent the special causes that result in defects, or to inexpensively inspect each item that is produced to determine whether it is acceptable or defective.

A poka-yoke device is any mechanism that either prevents a mistake from being made or makes the mistake obvious at a glance. The ability to find mistakes at a glance is essential because, as Shingo writes, "The causes of defects lie in worker errors, and defects are the results of neglecting those errors. It follows that mistakes will not turn into defects if worker errors are discovered and eliminated beforehand. He later continues that "Defects arise because errors are made; the two have a cause-and-effect relationship. ... Yet errors will not turn into defects if feedback and action take place at the error stage". We suspect that Shingo and Deming would have a protracted discussion about whether workers or management are responsible for defects. No resolution of that issue is undertaken here.
(1) 定性的防错
通过图像识别技术,光电、限位、接近开关的逻辑控制技术等来完成防错, 硬靠山:
 硬探头: 导向挡块:
 光栅防错: 夹具防错:
(2) 定量的防错
通过测量探头感应或经过气电转换的测量技术(气体流量转换成电量)来达到防错的目的,如红宝石探头探测数据反馈:
BTS刀具长度检测:
定位面气孔压力检测:
泄漏测试:随线检具直径测量:
扭矩控制:
(3) 颤动功能的防错
通过颤动机的颤动,使零件随着不断的颤动并输送至判别零件的方向正确与否处,只有零件处于正确的位置方向时,才能进入送料轨道;位置方向错误的零件则掉入零件颤动料箱里,从而达到预防零件的进给方向错误,避免工件报废的目的,
二、 物料防错
工件盛放器具的防错:加工完成的产品盛放实施防错技术,有方向性地定置摆放,预防工件相互碰撞,保证加工零件的表面质量;
色标防错:装配区域零件的盛放料架,使用色标防错。
三、 人工防错
(1)建立标准的操作SOS:(2)刀具安装防错:(3)工件目检、测量防错: 根据防错的效果,防错技术可分为如下三个等级:
(1) 不制造缺陷的防错,即不可能制造出坏零件,可能损坏的零件数为零;
(2) 不传递缺陷的防错,即不可能将坏零件传递到下一工位;-(3) 不接受缺陷的防错,即后续工位不接受坏零件.
防错装置的验证
使用新的防错装置时,必须进行功能准确率的验证,预防差错率。(1) 确认防错系统运转正常
(2) 确认人为因素处于受控状态

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