Study on a Rapid and Non-Destructive Measuring Method for the Web Thickness of Microdrills

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Project title

Code/計畫編號

MOST103-2221-E019-030

Translated Name/計畫中文名

微型鑽針芯厚之快速暨非破壞式量測方法研究

Project Coordinator/計畫主持人

Wen-Tung Chang

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Mechanical and Mechatronic Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=8347776

Year

2014

Start date/計畫起

01-08-2014

Expected Completion/計畫迄

01-07-2015

Bugetid/研究經費

515千元

ResearchField/研究領域

電子電機工程
機械工程

"臺灣為全球印刷電路板之研發及生產重鎮。據統計，2012 年臺灣印刷電路板產業（含中國大陸臺商）的全球市佔率約達 30%。因此，印刷電路板相關產業目前為國內重要的經濟支柱之一。在印刷電路板的相關製程中，常需要進行鑽孔作業，以產生孔徑為 0.075～ 0.45 mm 不等的微通孔或微盲孔。在目前印刷電路板產業所採用的鑽孔技術中，機械鑽孔仍佔相當大的比重。機械鑽孔的原理乃是使用高速旋轉的微型鑽針對印刷電路板的材料進行切削而形成微孔。鑽芯為鑽針之鑽部中未被開槽的核心部分，其厚度與鑽槽深度在設計上互為衝突。芯厚值較大的鑽針具有較佳的剛性，但其鑽槽深度較小，使得排屑效果較差；反之，鑽槽深度較大者則具有較佳的排屑效果，但其剛性較差。因此，芯厚的設計值是影響鑽針性能與耐用性的重要關鍵參數之一。針對鑽針成品的芯厚值進行量測以改善製程參數是鑽針製造廠目前所關切的重要品管檢測工作之一，開發快速暨非破壞式的芯厚量測方法有其絕對的必要性。本計畫的目的在於針對微型鑽針之芯厚值檢測工作研發一套快速暨非破壞式量測方法及其量測系統。本計畫所擬採用的關鍵性量測裝置為具有高量測速率與高量測精度的光學測微計模組，並透過其搭配精密運動平台模組及機器視覺模組等以構成一套創新的量測系統。本計畫預定以一年完成研發目標。首先，將針對量測方法的核心理論進行推導，並針對量測方法相對應的硬體架構進行設計與製作。然後，將進行系統整合與開發其自動化量測程序，並進行實際的非破壞式芯厚值量測實驗與驗證。" "Taiwan is one of the key design and production bases for printed circuit boards (PCBs) in the world. According to statistical data, the global market share of Taiwanese PCB industries (including Taiwanese companies in mainland China) was about 30% in 2012. Thus, PCB and related industries are now important parts of economic pillars of Taiwan. In the manufacturing processes of PCBs, drilling operations are frequently adopted to produce microholes (or microvias) of diameters ranging between 0.075 to 0.45 mm. Mechanical drilling presently plays an important role in the drilling technologies adopted by PCB industries. The principle of mechanical drilling is to use microdrills rotating with ultra-high speed to perform cutting action on PCBs and to form microholes. The web is the core portion of the drill body of a microdrill without fluted. From a design viewpoint, the web thickness conflicts with the depths of the helical flutes. A microdrill with a larger web thickness can have better rigidity, but its flute depths will be smaller and thus leads to poor chip removal ability, and vice versa. Therefore, the design value of the web thickness is one of the critical parameters that influences the performance and reliability of a microdrill. The web thickness measurement of microdrills for improving their manufacturing processes is one of the important quality control tasks concerned by microdrill manufacturers. Hence, the development of a rapid and non-destructive type web thickness measuring method and system for microdrills is quite necessary for the microdrill industry. The purpose of this project is to develop a rapid and non-destructive measuring method and its measuring system for the inspection of web thickness of microdrills. The key measuring device that will be adopted in the project is an optical micrometer module with high measuring speed and accuracy. An innovative measuring system will be mainly consisted of the optical micrometer module, precision motion table modules and a machine vision module. The term of the project is one year. Theoretical derivation of the measuring method will be carried out, and its corresponding measuring system will be designed and constructed. Then, experiments for the non-destructive web thickness measurement will be conducted to test the feasibility of the measuring method and system."

Keyword(s)

微型鑽針
芯厚
非破壞式量測
光學測微計
機器視覺
自動化光學檢測
Microdrill
Web thickness
Non-destructive measurement
Optical micrometer
Machine vision
Automated optical inspection

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Study on a Rapid and Non-Destructive Measuring Method for the Web Thickness of Microdrills

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