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市场品质FMEA模式管理分析(ppt 86页)

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市场品质FMEA模式管理分析(ppt 86页)内容简介

市场品质FMEA模式管理分析目录:
一、例题
二、做FMEA须注意的事项
三、FMEA的效用


市场品质FMEA模式管理分析内容提要:
1如果不这么做,可能变成何种结果?(删除)
2.与此相反方向(方式)去做,将变成如何?(正与反)
3.这样是否属于异常现象?何时发生的?(正常与例外)
4.将发生变化的事物予以例外处理(定数与娈数)
5.变大后可能如何?变小后又将如何?(扩大与缩小)
6.将此事物结合起来可能如何?分拆出来又如何?(结合与分离)
7.归纳集合起来将如何?分割出来又将如何?(集约与分散)
8.试予附加,或将某些部份划分出去将会如何?(附加与削除)
9.修正组合关系(顺序之置换)
10.差异点试予利用(共同与差异)
11.是否可使用其它的事物?设法以其它的事物替代之.(充足与替代)
12.同时做?或一件一件地做?(平行与直列)
1.鉴别法:这种方法是把不良品挑选出来,有时这种方法会当作一种检验手段.
    Informative Inspection. This uses data gained from inspection to control the process and prevent defects (SPC or measurement). Both successive checks and self-checks in ZQC are also a type of informative inspection. Successive checks were Shingo's response to the insight that improvements are more rapid when quality feedback is more rapid.
2.统计分析法:这种方法是分析从检查中获得数据数据,从而预防不良品产生,在零品管中顺序检查与自主检查也是统计分析的一种.顺序检查是Shingo洞察的结果:当质量的回馈迅速,改善也就越迅速.
   Source Inspection. This determines before the fact, whether the conditions necessary for high quality exist. With source inspection, poka-yoke devices ensure that proper operating conditions exist prior to actual production. Often these devices are also designed to prevent processes from being performed, until the necessary conditions are satisfied.
3.源流预防法:在不良品产生前,就确认是否存在生产高质量产品所必须具备的条件.在源流预防法中,防呆法确保在产品量产前就研究导入正确的作业方法. 否则就不予量产,除非有满意的作业方法
     General Motors had an operation which involved welding nuts into a sheet metal panel. When the panel is loaded by the operator, the weld nuts are fed automatically underneath the panel, the machine cycles, and the weld nuts are welded to the panel. If the equipment jams or misfeeds and there is no nut loaded, the machine will still cycle. Therefore, there is some probability of failure of the process. An error of this nature is sometimes not detected until the car is welded together. This results in a major repair or rework activity. To correct this problem, a wire was passed through a hole in the electrode holding the nut, insulating it away from the electrode so as it passes through it will only make contact with the weld nut. Since the weld nut is metal, it conducts electricity and with the nut present, current will flow through, allowing the machine to complete its cycle. If a nut is not present, there will be no current flow. The process is controlled so that the machine will actually remain idle unless there is a nut in place.
      通用汽车公司在汽车制造过程中有道工序,就是要把螺母焊接到一块金属面板上.当操作员把金属面板放上工位时,这个焊接的螺母要被自动送到金属面板下面,然后机器起动,把螺母焊接到金属面板上.如果设备卡壳或是误送就没有螺母被上工位,但机器仍然会起动,这样就有可能造成工序失败.这种错误有时是侦测不出来的,直到汽车全部焊接起来后才可能侦测出来,结果就导致重工或维修.解决这一问题的方法是:把一个导线穿过在电极上固定螺母用的孔.导线与电极之间绝缘,但可与螺母导通,当螺母确实放置好了的时候,电流就会通过螺母使机器起动,如果螺母没有放置上去,就会没有电流通过,这样制程就在受控状态之下.除非有螺母,否则机器就会闲着不动.
     Source inspection, self-checks, and successive checks are inspection techniques used to understand and manage the process more effectively. Each involves inspecting 100 % of the process output. In this sense, ZQC is a misnomer. These inspection techniques are intended to increase the speed with which quality feedback is received. Although every item is inspected, Shingo was emphatic that the purpose of the inspection is to improve the process and prevent defects, and therefore is not intended to sort out defects (although in some cases that may also be an outcome).
      源流预防,自主检查以及顺序检查都是用来了解与管理制程,并使之更有效的一种检查方法.针对100%检查的制程,如果称其为零品管可能是不恰当.但是这些检查方法是为了增加质量反馈的速度,尽管每一个项目都检查,但Shingo坚决认为这种检查的目的是改善制程和预防不良,而不是试图挑出不良品(尽管在有些情况下可能是).

 


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