巻号一覧
22 巻 (1988 - 1989)
- 44 号 p. 1-
- 43 号 p. 1-
22 巻, 44 号
選択された号の論文の3件中1～3を表示しています
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上出 諭吉, 橋口 清人1989 年 22 巻 44 号 p. 1-9
発行日: 1989/03/20
公開日: 2010/03/12
ジャーナル フリーPDF形式でダウンロード (644K) -
第1報 加工液の流れの解析小原 治樹1989 年 22 巻 44 号 p. 10-22
発行日: 1989/03/20
公開日: 2010/03/12
ジャーナル フリーMaximum cutting speeds of Wire EDM are limited by the break down of wire. During machining of the Wire EDM, the wire is heated by discharges but cooled by the flow of machining fluid, normally water. Abnormal overheating of the wire causes low tensile strength of the wire, and wire break down. So that wire cooling by the water flow has great effects on maximum cutting speed of wire EDM.
In this 1st report, the water flow in cut grooves by wire EDM are analysed using comformal mapping. Results shows that the flow rates of water at the nozzle are proportional to a aquare root of pump outlet pressure and the flow rate in the cut groove decreases so quickly if workpiece thickness increases. Larger inner nozzle size or larger outer nozzle size causes higher flow rate in the cut groove.抄録全体を表示PDF形式でダウンロード (806K) -
松田 次郎, 冨重 定三, 田中 健一, 矢野 宏1989 年 22 巻 44 号 p. 23-35
発行日: 1989/03/20
公開日: 2010/03/12
ジャーナル フリーThe optimum machining conditions of a WEDM are estimated by the parameter design on the basis of Taguchi's method, and the performance evaluation is carried out.
When a dimension is adopted as a characteristic, it is estimated that, by optimizing the average machining voltage and wire speed, the improvement of the accuracy is expected by about 50%, and under the optimum machining conditions machining is done with precision of about 21μm (σ).
Other results concerning angle show that by optimizing the discharge currents for machining and quiescent time, the improvement of the accuracy is expected by 40%, and similarly under the optimum machining conditions, machining can be done with precision of about 8s (σ).抄録全体を表示PDF形式でダウンロード (2572K)
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