1第一讲 DCOV 流程基础.ppt

第一讲: DCOV 流程基础 * Customer Requirement Cascade e.g., QFD, Cause-Effect Matrix, Design Matrix (Axiomatic Design) Robust System Concept Benchmark comparisons Plan to avoid mistakes Concept FMEA, draft P/DFMEA P- and Boundary Diagrams, + other functional diagrams as needed: Function Structure Diagrams Interface Matrix Initial Noise Factor Mgmt Strategy Plan for optimization/verification Robustness checklist Part/process CTQ characteristics Flowdown: Y?y?x Measurement systems for Y, y, x System Transfer Function Initial sensitivities (e.g., scorecard) Integrate customer needs and wants into an engineered system Select a robust system concept Plan to avoid mistakes Create a P-diagram Establish the initial noise factor management strategy Characterize product and process Develop a transfer function Hold peer champion reviews 避免由于对系统不甚了解和设计方案的不完善产生的失效模式 例如, 相互耦合的功能需求, 过于复杂, 可生产性不好, 不方便服务等等. Kano Analysis CTS Y’s, with targets ranges CTS Scorecard SDS Requirements Existing foundation documents: FMEAs P-Diagrams Robustness Checklists Existing Transfer Functions, CAE models Existing Test Procedures etc. 典型输入 REQUIRED TECHNICAL ACTIVITY OUTPUTS 特性化系统:目标分解, 产生和选择概念, 并且了解系统 C2 C3 C6 C12 C12 C4,5,13 C9 C15,16 C2,7 C3 C6 C6,12 C2,7,11 C12 C13,14 C9 C8 ver. 1 18-MAR-2011 第一讲: DCOV 流程基础 * 避免由于很差的技术执行而产生的失效模式 例如, 对于下列问题不能发现和不能找出改进措施 错误 (改进措施 = 预警和相应的SOP’s) 对于噪声的敏感度 (赶紧措施 = 稳健性) P-Diagram and additional functional diagrams Transfer Function (as developed to date) Manufacturing Assembly Process Flow Diagrams Present Process Capability (m, s) Gage RR capability studies PFMEA DFMEA data Initial Noise Factor Management Strategy Verification Plans including Robustness Reliability Checklist and FDVS items Validate the transfer function(s) Make design insensitive to noise Implement noise factor management strategy / determine optimal design Design for producibility and optimize process Confirm the contributing factors for variation Develop a verification plan Hold peer champ