LIQUID JET MACHINING DEVICE, LIQUID JET FORMING METHOD AND LIQUID JET MACHINING METHOD USING CRYOGENIC LIQUID

PROBLEM TO BE SOLVED: To reduce the overall size of and reduce the manufacturing cost of a device. SOLUTION: The liquid jet machining device comprises a liquid injecting means 10 having a storage space 17 capable of hermetically storing liquid nitrogen as cryogenic liquid, liquid supply openings 11a2 and 14a2 capable of supplying liquid nitrogen to the storage space 17, a liquid injection nozzle 13 capable of injecting liquid nitrogen in the storage space 17, and an opening/closing means capable of opening/closing a nozzle hole of the liquid injection nozzle 13. The liquid jet machining device further comprises a heating means 21 capable of heating liquid nitrogen in the storage space 17 of the liquid injecting means 10, a cylindrical abrasive injecting means 30 disposed in the liquid injecting means 10 so as to be extended in the storage space 17 of the liquid injecting means 10 and to be positioned at a tip end in the liquid injection nozzle 13, and an abrasive supplying means 40 connected to a base end of the abrasive injecting means 30 to supply at least abrasive to the abrasive injecting means 30. COPYRIGHT: (C)2003,JPO