A Case Study of Production Line Automated Testing System

• Main Authors: Liu, Taun-Lin, 劉天麟
• Other Authors: Wu, Chien-Wei
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/kam4q5

碩士 === 國立清華大學 === 工業工程與工程管理學系碩士在職專班 === 105 === The main purpose of product testing and inspection is to determine which products characteristics are out of specifications specified by company’s or customers’ quality policy for preventing from these products shipped to market and causing relevant lost, such as goodwill, return and exchange, warranty repairing, and etc. From product designing, suppliers, factories, manufacturing, customers, end users, and etc., all rely on product testing to meet the expected quality levels and achieve the goal of customer satisfaction. Steps of manufacturing electronic products include feeding, SMT to PCB, semi-finished good assembly, final assembly and packing to shipment. There are many testing activities in these series of manufacturing processes. When final assembly is completed, the electronic properties are almost settled. Therefore, product testing after final assembly is very critical to ensure the product quality of the shipped products. In current product testing process after final assembly, operators need to do plug in and out signal for signal and power cable manually. Individual differences in these actions will cause damage on testing port, wrong result of testing, testing production line stop, or out of specification products shipped to the market. To remedy for this issue, several designs and developments of automated testing device system are developed. This study is based on the design experience of automated testing equipment, with the use of process analysis, focus group interviews, and root cause analysis, to find out high frequent problems among personnel operations and automation equipment. Then have further comprehensive analysis to figure out final solutions. Based on the risk assessment of the solutions to prioritize the implementation of the solutions and improve them respectively. The solution approach combined with the TRIZ solution model to find the direction of design with the experimental verification. Finally, conduct a project to have an implementation of the entire diagnostic process and design process. The automated testing system designed in this study can be dynamically converted to a static with zero-positioning test system. The system can be widely applied in many fields of machinery industries and does not lose the effectiveness of locating zero references due to repeated positioning.