SPC统计培训讲义.pptx

SPC统计; 目前问题: 统计方法未得到有效应用; 提纲 ; 2.1 SPC (统计制程控制) ;;分布图形为对称之钟形曲线 对称于正态分布之平均数，且平均数=中位数 68.26%的数据在μ±1σ范围内 95.46%的数据在μ±2σ范围内 99.73%的数据在μ±3σ范围内 ;;3. 工艺能力指数：Cp and Cpk 3.1 Cp: Process Capability Index（工艺能力指数） 3.2 Cpk: Process Actual Capability Index（工艺实际能力指数） 3.3 One-side Cp/Cpk 3.4 可替代的 Cpk 公式;3.1 Cp: 工艺能力指数;3.2 Cpk: 工艺实际能力指数;3.3 One-side Cp/Cpk;3.4 可替代的 Cpk 公式;4. 通过审查Cp/Cpk Review来改善制程 4.1 理解 Cp and Cpk 4.2 如何看制程行为 4.3 Cpk 审查制度;;15;Cpk:1.19 k:0.08;4.3 Cpk 审查机制;Internal Cpk report template;Announcement: QE will summary the Cpk report every week, and send the highlighted chart list to PE. PE need feedback root cause and action to QE within 4 days with standard format. PE Cpk improvement report need be reviewed by department manager before send to QE. QE will monitor the report quality and highlight the worse case on staff meeting. PE section manager must standby when QE report Cpk report to customer. If Cpk performance was impacted by single event, PE need provide Cpk performance after filter it. Any constrain action, PE need detail explain why need constrain and QE will add QE flag in constrain system.;Thanks