| Summary: | 碩士 === 元智大學 === 工業工程與管理學系 === 100 === Most of the problems in production and assembly process are caused by inappropriate tool. In order to escape the engineers’ experience rule of thumb or special managerial method, this study introduces TRIZ theory to invent and innovation auxiliary tool to solve the production problems and increase stability of quality. OWAS is also used to improve using auxiliary tool by analyzing worker posture, and confirm the improvement. This study work on axle bearing burn out, which is highly happened claim of huge commercial vehicle produced in our case company. Following the investigation result, we find that unqualified grease filling shape and volume are primary cause, and inappropriate tool(depend on worker’s experience) and grease overfilling are secondary cause.
To improve the axle quality, we applied contradictive matrix, art of state new invention in TRIZ theory to invent new tool, after three to improve evaluation, 『grease control gun』 is invented. Grease sticking on the grease control gun can easily be removed due to the property of Teflon material, we can also lean the process, shorten moving distance in operation and save time. 『OWAS』 analyzed work’s posture to understand whether it has been improved or not, we also applied 『Defect-free process completion』 to confirm whether operator’s confidence on quality has been improved or not.
The results show that this innovation grease control gun is proved to be able to improve quality in grease filling operation, shorten operating time and moving distance, solve grease dripping phenomenon, improve working posture, raise confidence level on quality and built up a better working environment.
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