| 摘要 |
PURPOSE:To enhance the efficiency of machining, by providing annular sponge- like members for preventing working liquid from leaking, so that they surround working liquid nozzles are their front ends are made into contact with a workpiece to enhance the flow, flow rate and liquid pressure of the working liquid directed to a working part. CONSTITUTION:A pair of working liquid jet nozzle bodies 22, 23 are arranged, being opposed to each other, and annular leak preventing members 43, 44 are arranged between a workpiece 24 and the nozzle bodies 12, 13. Working liquid is fed from pressurizing hoses 25, 26, and is prevented by the members 43, 44 from leaking without travelling from a gap G to a working part 27, so that the flow, flow rate and liquid pressure of the working liquid are increased corresponding to that, thereby the efficiency of machining may be enhanced. Thereafter, the working liquid is jetted from openings 14, 16 to cool an energizing pin 10 and an energizing roller 11. |
