某五金制品公司制程管制系統(tǒng)概論-在線瀏覽
2025-03-10 21:27本頁面
【正文】 錯(cuò)誤的包裝或包裝標(biāo)簽 6 Board or socket安裝錯(cuò)誤 5 內(nèi)部的良率 /額外作業(yè) 對(duì)設(shè)備的損壞 對(duì)設(shè)備的損傷 4 對(duì)良率的重要影響 顯著的產(chǎn)線產(chǎn)量影響 3 對(duì)良率的次要影響 輕微的產(chǎn)線產(chǎn)量影響 2 外觀 額外的作業(yè) /不必要干擾 1 未發(fā)現(xiàn) 內(nèi)部或外部的未發(fā)現(xiàn)的不良 Note: References to customers in this table mean external customers Relative parison should be used in assigning severity ranking 列出個(gè)全部與輸出參數(shù)相關(guān)的輸入變量 ? 輸入變量包括 : – 采購物料的要求 – 設(shè)備和制程的因素 – 環(huán)境條件 ? 來源 : – 以往經(jīng)驗(yàn) – 技術(shù)經(jīng)驗(yàn) – 標(biāo)竿 – 理論或?qū)嶒?yàn)?zāi)Ｐ? – 腦力激蕩法 ? 運(yùn)用魚骨圖 列出輸入變量 Output Man Measurement Material Environment Machine Method 對(duì)輸入變量進(jìn)行優(yōu)先排序 ? 使用機(jī)率評(píng)估表 ? 此輸入變量失效的機(jī)率是多少 ? 機(jī)率評(píng)估表 機(jī)率評(píng)估表 原則 等級(jí) 類型 可能性 頻率 10 9 十分高 0. 10 0. 10 多次 /班 多次 /日 8 7 高 0. 05 0. 02 多次 /周 很少 /周 6 5 4 一般 0. 01 0. 005 一次 /周 幾次 /月 很少 /季 3 低 0. 0025 一次 /月 2 十分低 0. 001 一次 /季 1 極 少可能 0. 0001 極 少發(fā)生 計(jì)算風(fēng)險(xiǎn) ? 將每一對(duì)輸入 /輸出變量的風(fēng)險(xiǎn)評(píng)估分?jǐn)?shù)與機(jī)率評(píng)估分?jǐn)?shù)相乘 . ? 用乘積最高的分?jǐn)?shù)那一項(xiàng)作為推行 PCS的重點(diǎn) . Prioritizing the I/O’s – Failure mode: What can go wrong and what effect would the failure have? – Severity: How severe is the effect? – Cause: What could cause the failure mode? – Occurrence: How likely is it to occur? – PCS Risk Score: What is the overall risk? – Remended action: What can be done to reduce the risk? – Control: What controls are in place? – Containment: How are its effects prevented? – Detection: How effective are they? Outputs Inputs Prioritization Action PCS Failure Mode Effects Analysis (FMEA) Model Causes What caused the failure mode? Occurrence Risk Priority Number (RPN) = Severity x Occurrence x Detection ? A score/rank scale is assigned to Severity, Occurrence Detection criteria ? Worst case situation will have the highest score Inputs Failure Mode How can product fail to meet requirements? Severity Outputs Control How to prevent cause of failure mo
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