フィルムパトローネ内装工程におけるサンプリング間隔の最適化

抄録

In　manufacturing,　inspection　is　conducted　to　know　if　a　process　is　under　normal　operating condition.　However,　the　method　is　usually　determined　by　the　nature　of　the　process　or　from　the experience　in　the　past,　and　in　most　cases,　it　is　not　rational　from　the　economic　viewpoint. In　quality　engineering,　the　optimum　control　method　is　determined　by　balancing　the　cost　of control　and　the　loss　due　to　quality.　The　loss　due　to　quality　is　the　loss　caused　by　the　products which　did　not　pass　the　inspection. In　this　study,　an　On-Line　Quality　Engineering　method　was　applied　to　a　color　film　inner packaging　process.　The　optimum　sampling　interval　was　increased　by　four　times,　saving　22.5 million　yen　due　to　sample　loss　and　15　million　yen　by　inspecting　labor　cost　reduction.