Tool Wear, Hole Characteristics, and Manufacturing Tolerance in Alumina Ceramic Microdrilling Process

文化大學機構典藏 CCUR > 理工學院 > 工學院 > 機械工程系暨機械工程學系數位機電研究所 > 期刊論文 > Item 987654321/24320

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題名:	Tool Wear, Hole Characteristics, and Manufacturing Tolerance in Alumina Ceramic Microdrilling Process
作者:	Chang, DY (Chang, Dar-Yuan) Lin, SY (Lin, Shu-Yi)
貢獻者:	Dept Mech Engn
關鍵詞:	Ceramic microdrilling Manufacturing tolerance Taguchi's experiment Tool wear
日期:	2012
上傳時間:	2013-02-26 10:05:08 (UTC+8)
摘要:	Microdrilling is an essential process in the electronics, aviation, and semiconductor industries. Since microdrills have low rigidness and a high aspect ratio, precise drilling parameters are required to prevent tool breakage from excessive thrust force or torque. This study implements thousand-micron grade microdrilling experiments in alumina ceramic to investigate the effects of drilling parameters on hole characteristics. Because ceramic has poor machinability, the holes must be fabricated by peck-drilling at shallow depths and continuous cooling. The drilling parameters analyzed included the spindle revolution speed, drill feed rate, peck-drilling return distance, and centering drill depth. Characteristics of the hole diameter and roundness were measured by a computer numerical control (CNC) image measurement device. The optimal parameters combination was derived by a two-stage Taguchi's experiment. This study also observes tool wear on chisel edge and generalizes manufacturing tolerance to obtain stable quality characteristics. This article presents valuable process data for thousand-micron grade microholes drilled in sintered alumina ceramic.
關聯:	MATERIALS AND MANUFACTURING PROCESSES 卷: 27 期: 3 頁數: 306-313
顯示於類別:	[機械工程系暨機械工程學系數位機電研究所] 期刊論文

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