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Bearing machining process is widely used in various fields. Bearing machining process is a kind of cutting processing, which uses tools to cut round holes on solid materials. The hole cutting process can be divided into three types, namely through-hole, blind-hole, and buried-hole. This study focuses on the through-hole cutting process. In the current state-of-the-art machine tool industry, this method is used for the installation of locking parts and driving devices which requires a great deal of precision in the manufacturing process. Therefore, this study uses failure mode and effects analysis (FMEA) to avoid known problems in order to effectively improve the manufacturing process. In this study, the factors affecting the eight major bearing machining processes are analyzed, and the possible factors of 20 failure modes are explored. The risk priority number (RPN) of each failure mode is evaluated by experts, and preventive and improvement measures are suggested for the failure modes with higher priority numbers. The study result shows that among the 20 failure modes, the top three failure modes with higher priority numbers are as follows: “screw hole position is not centered”, “screw hole position is abnormal”, and “screw hole diameter is too large”. After implementing improvement measures, manufacturing abnormalities are reduced, and thereby improving process quality and efficiency.
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