Development of a New Coolant Supplying Nozzle for a Thin Blade for Reducing Coolant Supply

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  • 研削液使用量を低減する薄刃砥石用研削液ノズルの開発
  • ケンサクエキ シヨウリョウ オ テイゲンスル ウスバ トイシヨウ ケンサクエキ ノズル ノ カイハツ

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Abstract

This paper deals with a new floating nozzle for suppressing thin blade wear effectively in slitting with minimum quantity of coolant. This nozzle is characterized by its property of maintaining a small clearance between the blade surface and the nozzle tip easily and supplying coolant to the grinding zone effectively by the adhesion of the coolant to the circumferential face and the side faces of the thin blade, thus reducing the coolant flow rate to a large extent. In the experiment of slitting of SKD11 with a WA blade, it is found that the radial wear of the blade in the case of the floating nozzle is about 2/3 of that of a conventional nozzle. The effect of the developed nozzle is also confirmed from the results of slitting of WC with a diamond wheel and of stainless steel (SUS630 in JIS) with a CBN wheel with remarkable reduction of the radial wear to 2/3 and 1/3, respectively. Furthermore, as an application of the method, a new floating nozzle for multi slitting blades is proposed.

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