某企业不良专案改善.ppt

1、AVC Confidential,06ww45.3 BPI Project for TOWDA Template,Asia Vital Components Co., Ltd. 8 November 2006,2006/11/08 AVC Six Sigma,AVC Confidential,2,DEFINE(界定) (Title, Definition, Why Selected 从原材到成品拉丝可约拉去约0.12-0.15,厚度还 余4.48-4.56,用高度规测试总高度加上焊接面和 CPU面的平面度约0.1,总高度測出會约为4.58- 4.66, 故超出规格上限(4.50.05).,20

2、06/11/08 AVC Six Sigma,AVC Confidential,13,ANALYZE(分析) (Data Analysis, Quality Tools & Root Cause Findings),10,Root Cause Findings(真因追查):,2.产品表面拉丝多少直接影响成品厚度. 3. 用卡尺测试厚度两边, 而实际产品总高度没测出,总高度需 用高度规测试.,改善前用卡尺测试,改善后用高度规格测试,2006/11/08 AVC Six Sigma,AVC Confidential,14,ANALYZE(分析) (Data Analysis, Quality To

3、ols & Root Cause Findings),11,Data Analysis(數據分析):,用卡尺和高度规测试厚度对照表,2006/11/08 AVC Six Sigma,AVC Confidential,15,IMPROVE(改善) (Actions Piloted),12,Actions Piloted(對策試行):,1. 经与AVC相关工程人员检讨决议原材厚度由4.6改为4.5但原 材厚度改为4.5经拉丝致成品,可拉去约0.12-0.15,厚度还余4.38, 用高度规测试总高度加上焊接面和CPU面的平面度约0.1,总高 測出會约为4.48,如有不良需重工拉丝,重拉丝一次约拉去0

4、.05, 总厚度还余4.43,故超出规格下限( 4.50.05).经与AVC勾通確 認成品厚度规格变更为:4.5+0.05/-0.15,2006/11/08 AVC Six Sigma,AVC Confidential,16,IMPROVE(改善) (Actions Piloted),13,Data Analysis(數據分析):,厚度改为4.5之材料产出成品厚度CPK图表,2006/11/08 AVC Six Sigma,AVC Confidential,17,IMPROVE(改善) (Actions Piloted),14,Actions Piloted(對策試行):,2. 在CPU粗拉丝

5、后用治具检测,通规4.55可通过则OK,阻规4.35不 可通过则OK,厚度超出上限规格的再拉丝, 确保厚度在4.55-4.35 之间.,用4.55治具检测可通过,用4.35治具检测不可通过,2006/11/08 AVC Six Sigma,AVC Confidential,18,15,改善前用卡尺测试,改善后用高度规格测试,IMPROVE(改善) (Actions Piloted),Actions Piloted(對策試行): 3.厚度用卡尺检测改为用高度规检测.,2006/11/08 AVC Six Sigma,AVC Confidential,19,IMPROVE(改善) (Perform

6、ance After & Project Savings),16,Performance After(改善后成果):,附改善后厚度用高度规测试CPK图表如下:,2006/11/08 AVC Six Sigma,AVC Confidential,20,CONTROL(控制) (Standardization & Sustained Results),17,Standardization(標准化):,CPU面精拉絲,CPU面倒角,粗剖槽,槽面粗拉絲,整平,擴孔,溝槽抛光,原材料检验,CPU面粗拉絲,槽面精拉絲,入庫,退回廠商,下料,開始,OK,NG,领料,冲型,冲孔,精修,精剖槽,去毛刺,檢測槽面

7、平面度,檢測CPU面平面度,檢外觀,外發化鎳,包 裝,裝箱,入庫,检测厚度,OK,NG,厚度检测,OK,NG,拉丝,卡尺检测改为高度规检测,厚度由4.6改为4.5,拉丝后增加检测厚度,(流程图&改善后状况),2006/11/08 AVC Six Sigma,AVC Confidential,21,CONTROL(控制) (Standardization & Sustained Results),18,NG,拉丝后增加检测厚度,Standardization(標准化):,变更后原材厚度检验标准,ROHS,2006/11/08 AVC Six Sigma,AVC Confidential,22,CONTROL(控制) (Standardization & Sustained Results),19,NG,Standardization(標准化):,5.用治具全檢厚度,治具檢測4.55可通過,4.35不可通過.,用4.55治具檢測通過OK,用4.35治具檢測不通過OK,厚度超出上限規格時再拉絲致厚度在4.35-4.55之間.,拉丝后厚度用治具检测写入作业指导,2006/11/08 AVC Six Sigma,AVC Confidential,23,CONTROL(控制)