Study of Inspecting Surface Defects for Micro Drills Using DFT

• Main Authors: Chun Hao Shi, 施純豪
• Other Authors: zhang
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/45547396149311862349

碩士 === 聖約翰科技大學 === 自動化及機電整合研究所 === 98 === In this thesis, we present a non-destructive inspection system to inspect micro-drill’s defect. The inspection system is opto-mechatronics technology, it including communication, automation mechanism, optics, machine vision and software. This study focus on two parts: (1) Optics Inspection - Micro-drill’s outer diameter and wed thickness are measured by optical-micrometer. (2) Vision Inspection - Micro-drill’s image defects are differentiated by DFT and FFT. Developing a non-destructive inspection system can search any defects area and pixel amount. In this inspection system is not only analysis the difference between image of micro-drill’s defects, but also save the inspection time effectively. In addition, it reduces the human misjudgment and the manpower, so it can raise the competition of enterprise.