dfema规则

规则"/>

dfema规则

DFMEA全解

FMEA Definition / FMEA 定义 An FMEA can be described as a systemized group of activities intended to: 失效模式及效应分析是一组有系统的行为, 其目的是: Recognize and evaluate the potential failure of a product/process and its effects 辨别与评估产品及其工艺的潜在失效模式, 以及由此产生的效应 Identify actions which could eliminate or reduce the chance of the potential failure occurring, and 找出行动方案来避免潜在失效的发生, 或降低其可能性 Document the process 将以上过程记录在案 FMEA Flow / FMEA 流程 Magna Closures Required FMEA Related Documents Boundary Diagram P-Diagram CC / SC / KC Product Characteristic Matrix FMEA Checklist DFMEA设计失效模式及效应分析 Design Potential FMEA is: 设计潜在失效模式及效应分析是: an analytical technique used primarily by Design-Responsible Engineer/Team 由负责设计的工程师/小组采用的分析技术 to identify potential failure modes用作辨别潜在失效模式 to identify associated cause/mechanisms辨别相关原因/机理 to support the design process in reducing the risk of failures支持设计过程, 减少失效风险 apply to system, subsystem, and component应用于系统、 子系统及部件 Customer of DFMEA顾客的定义 Customer for a Design FMEA顾客的定义 End user 通常是指“最终使用者” Manufacturing/Process-responsible engineer 也可以是更高一层设计司，制造或装配生产工程司 Team Effort 小组的努力 Design 设计 Manufacturing 制造 Quality 品质 Material 材料 Reliability 可靠性 Sub-contractor 分供方 DFMEA 设计失效模式及效应分析 Design FMEA is LIVING document and should 设计FMEA是一份动态的文件 be initiated before or at design concept finalization 在一个设计概念最终形成之时或之前开始 be continually updated在产品开发的各个阶段, 发生更改或获得更多的信息时, 持续予以更新 be fundamentally completed before production drawing release在产品加工图样完工之前全部完成 DFMEA 设计失效模式及效应分析 Assumption: Design will be manufactured/assembled 假设 : 该设计将按此意图进行生产 Potential failure modes during production “Need Not” but “May Be” included制造的失效模式“不需”但“也可能”包括 DFMEA not rely on process controls to overcome design weaknessDFMEA不依靠过程控制来克服潜在的设计缺憾 DFMEA considers technical limits of manufacturingDFMEA考虑制造的限制 Mold drafts 拔模斜度 Assembling space 装配空间 Tolerances / capability 公差 / 过程能力 Development of a Design FMEA 设计FMEA的开始 First Step of DFMEA: IDENTIFY DESIGN INTEND第一步 : 确定设计意图 “Listing of what