プリント基板の回路接続用小径穴のドリル加工に関する研究 : GFRPの強化繊維束の幾何形状と穴壁面の内部損傷(機械要素,潤滑,工作,生産管理など)

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Recently, a demand of miniaturization and performance enhancement of the printed wiring board is intensified more and 'more with the rapid populaization of the information terminal electronic equipment. The processing by the drill is generally used in small diameter drilling of the printed wiring board. Then, the through-hole of small diameter is desired for the miniaturization of the equipment. And, there is the internal damage of drilled hole in one of the problems in the formation of the through-hole in the drilling. Therefore, it is necessary to consider internal damage that causes the migration and plating to decrease with the reliability of the product. Then, it is required that the deterioration of the drilled hole quality is controled. Therefore, for the purpose of clarifying the factor that affects the damage, width and thickness of fiber bundle of glass cloth used as a reinforcement of the GFRP were noticed in this study. And, internal damage and effect of the thrust force and cutting torque were examined using those 5 kinds of different materials. Following conclusions were obtained : (1) To make smaller the influence of the damage width by the rotation angle and to do high reliability drilling, it is effective to equal the rate of fiber bundle of each warp yarn and weft yarn occupied in each direction. (2) The approximation of the damage width was deduced from feed rate and fiber bundle thickness, and it is possible that damage width with the glass cloth of various fiber bundle thickness is estimated.
社団法人日本機械学会の論文
2004-02-25

プリント基板の回路接続用小径穴のドリル加工に関する研究 : GFRPの強化繊維束の幾何形状と穴壁面の内部損傷(機械要素,潤滑,工作,生産管理など)

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