【正文】 attachment for seat support Potential Failure Mode(s) ?Structural failure seat support ?Excessive deflection of seat support Function: –Provides pleasing appearance Potential Failure Modes(s) ?Finish (shine)deteriorates ?Paint chips Handle Bar Assembly Rear Wheel Assemble Sprocket Assemble Function: –Provides structural support Potential Failure Mode(s): ?Structural failure ?Excessive deflection Function: –Provides dimensional control for correct finished frame geometry Potential Failure Mode(s): ?Length of frame mounting points to long ?Length frame mounting points too short Function: –Support frame assembly production methods (welding) Potential Failure Mode(s): Bicycle Frame Front Wheel Assemble Seat Assemble Chain Assemble Upper Frame Lower front Tube Lower Rear Tube Sprocket Tube System Level Subsystem Level Component Level 20 設(shè)計(jì)目標(biāo) : 1. 騎行至少 3000小時(shí)無需保養(yǎng) , 2. 設(shè)計(jì)壽命為騎行 10000小時(shí) 。 4. 3. 等等 ……. 1. 功能 : – 便于使用 潛在失效模式 : ? 方向把不好用 ? 腳踏板不好用 功能 : – 提供可靠的交通運(yùn)輸 潛在失效模式 : ? 鏈條經(jīng)常斷開 ? 需要經(jīng)常修理車胎 功能 : – 提供舒適的交通運(yùn)輸 潛在失效模式 : ? 車座位置不舒服 功能 : –為座位支撐提供穩(wěn)定的附屬物 潛在失效模式 : ?座位支撐的結(jié)構(gòu)性失效 ?座位支撐的過大變形 功能 : –提供好看的外觀 潛在失效模式 : ?外觀 (光亮度 )變壞 ?漆皮開裂 把手總成 后輪總成 鏈輪總成 功能 : –提供結(jié)構(gòu)性支撐 潛在失效模式 : ?結(jié)構(gòu)性失效 ?過大變形 功能 : –對(duì)正確的車架幾何外形提供 尺寸控制 潛在失效模式 : ?車架安裝點(diǎn)的長度過長 ?車架安裝點(diǎn)的長度過短 功能 : –為車架總成的生產(chǎn)方法 (焊接 ) 提供支持 潛在失效模式 : 自行車 車架 前輪總成 車座總成 鏈條總成 上部車架 下前車管 下后車管 鏈輪管 系統(tǒng)等級(jí) 子系統(tǒng)等級(jí) 部件等級(jí) 21 Details of DFMEA 3) Design Responsibility 設(shè)計(jì)責(zé)任 4) Prepared By 編制者 5) Model Year(s) /Program(s) 車型年 /項(xiàng)目 Enter the OEM, department, and group. Also include the supplier name, if applicable. 填入整車廠、部門和小組 。 Enter the name, telephone number, and pany of the engineer responsible for preparing the FMEA的工程師的姓名、 電話和所在公司的名稱 。 22 Details of DFMEA DFMEA的詳細(xì)內(nèi)容 6) Key Date 關(guān)鍵日期 7) FMEA Date FMEA日期 8) Core Team 核心小組 9) Item/Function 項(xiàng)目 / 功能 Enter the initial FMEA due date, which should not exceed the schedule production design release date 填入初次 FMEA應(yīng)完成的時(shí)間 , 該日期不應(yīng)超過計(jì)劃的生產(chǎn)設(shè)計(jì)發(fā)布日期 。 List the names of the responsible individuals and departments that have the authority to identify and/or perform / 或執(zhí)行任務(wù)的責(zé)任部門的名稱和個(gè)人的姓名。 23 Details of DFMEA DFMEA的詳細(xì)內(nèi)容 10) Potential Failure Mode 潛在失效模式 Potential failure mode is defined as the meaner in which a ponent fail to meet the intended 是指部件、子系統(tǒng)或系統(tǒng)有可能會(huì)未達(dá)到或不能實(shí)現(xiàn)項(xiàng)目 / 功能文件中所描述的預(yù)期功能的情況 。 24 Details of DFMEA DFMEA的詳細(xì)內(nèi)容 11) Potential Effect(s) of Failure 潛在失效的后果 The effect of the failure mode on the function, as perceived by the “CUSTOMER”潛在失效的后果定義為顧客感受到的失效模式對(duì)功能的影響。 ? State Clearly if has impact on safety or nonpliance to regulation如果失效模式可能影響安全性或?qū)Ψㄒ?guī)的符合性 , 要清楚地予以說明。 小組應(yīng)對(duì)評(píng)定準(zhǔn)則和分級(jí)規(guī)則達(dá)成一致意見。 27 Suggested DFMEA Severity Evaluation Criteria Effect Criteria: Severity of Effect Ranking Hazardous without warning Very high severity ranking when a potential failure mode affects safe vehicle operation and/or involves nonpliance with government regulation without warning. 10 Hazardous with warning Very high severity ranking when a potential failure mode affects safe vehicle operation and/or involves nonpliance with government regulation with warning. 9 Very High Vehicle/item inoperable (loss primary function). 8 High Vehicle/item operable but at reduced level of performance. Customer very dissatisfied. 7 Moderate Vehicle/item operable, but Comfort/Convenience item(s) inoperable. Customer dissatisfied. 6 Low Vehicle/item operable, but Comfort/Convenience item(s) operable at a reduced level of performance. Customer somewhat dissatisfied 5 Very Low Fit Finish/Squeak Rattle item does not conform. Defect noticed by most customers (greater that 75%) 4 Minor Fit Finish/Squeak Rattle item does not Conform. Defect noticed by 50% of customer. 3 Very Minor Fit Finish/Squeak Rattle item does not conform. Defect noticed by discriminating customers (less that 25%) 2 None No discernible effect. 1 28 推薦的 DFMEA 嚴(yán)重度評(píng)價(jià)準(zhǔn)則 后果 評(píng)定準(zhǔn)則 : 后果的嚴(yán)重度 嚴(yán)重度 無警告的嚴(yán)重危害 這是一種非常嚴(yán)重的失效形式 ,它是在沒有任何失效預(yù)兆的情況下影響到行車安全或不符合政府的法規(guī) 。 9 很高 車輛 / 項(xiàng)目不能運(yùn)行 (喪失基本的功能 ) 8 高 車輛 / 項(xiàng)目可運(yùn)行 , 但性能下降 , 顧客非常不滿意 。 6 低 車輛 / 項(xiàng)目可運(yùn)行 , 但舒適性 / 方便性項(xiàng)目的性能下降 , 顧客有些不滿意 。 大多數(shù)顧客 (75%以上 )能感覺到有缺憾 。 50%的顧客能感覺到有缺憾 。 有辨識(shí)能力的顧客 (25%以下 )能感覺到有缺憾 。 1 29 Details of DFMEA 13) Classification 級(jí)別 14) Potential Cause(s) / Mechanism(s) of Failure 失效的潛在起因 /機(jī)理 Classify any special product characteristics 本檔目可用于對(duì)那些可能需要附加的設(shè)計(jì)的產(chǎn)品特殊特性的分級(jí) Indication of design weakne