| 摘要: | 本研究主要改善傳統游離磨料線鋸加工時，因磨粒並未利用完全便隨切削屑及磨漿排出，使其所需加工時間增長且線鋸上的磨料廢棄率高，而相對所需之成本也較高等缺點進行改善。因此，本研究研發一種以複合電鍍法的方式將鎳-鑽石披覆於琴鋼線上，使琴鋼線本身即具有切削性質之工具，希望藉此能有效改善傳統游離磨料鋸切加工的問題，進而降低製程上之成本。 研究主要分為兩大部分，第一部分為琴鋼線複合線材的製備：將鎳-鑽石複合電鍍液以電鍍方式披覆於琴鋼線材上。實驗結果顯示，隨著電流密度、電鍍時間的增加，鍍層厚度也隨之增加。在電流密度7 A/dm2 與鑽石濃度100 g/L 等參數進行電鍍實驗時，琴鋼線複合線材具有較佳鍍層厚度及鑽石披覆。第二部分則利用田口實驗設計針對高速鋼棒進行切削，探討各參數對切削深度的影響。由實驗結果得知，較佳製程參數組合為：切削荷重500 g、工件轉速3000 rpm、進給速率3.5 mm / min、線張力1500 g 和琴鋼線於電鍍時間10 min、電流密度7 A/dm2、鑽石濃度100 g/L 進行切削加工，切削深度可達27.01 μm。This study was to improve the traditional free-abrasive wire saw machining,due to the abrasive doesn’t completely will immediately cutting debris andrefining discharged.High abrasive waste so that the required processing time of growth on the wire saw, the relative costs to be incurred higher shortcomings toimprove. In this study, the evelopment of composite plating nickel - diamond coated to the piano wire, the research study of piano wire itself cutting of the tool, hoping to effectively improve the traditional free-abrasive sawing, therebyreducing the cost of the process. The study divided into two parts, the first part of the preparation of piano wire: nickel - diamond composite lating solution to plating coated on the piano wire. Experimental results show that, with the increase of current density and plating time, the coating thickness increases. Current density of 7 A/dm2 and diamond concentration of 100 g/L, the parameters of the plating experiments, piano wire has a better coating thickness and diamond coated. The second part of the Taguchi experimental design for high-speed steel cutting, explore the impact of various parameters on the depth of cut. From the experimental results, better process parameters combination: Cutting load 500 g, workpiece rotation 3000 rpm, feed rate 3.5 mm/min, thread tension 1500 g, co-deposition time 10 min, current density 7 A/dm2 and diamond concentration 100 g/L for cutting, cutting depth up to 27.01 μm. |
