| 摘要 |
PROBLEM TO BE SOLVED: To improve the machining efficiency of powder jet machining by uniformalizing the powder concentration in a nozzle in the powder jet nozzle using a long sideways nozzle. SOLUTION: A powder supply roller 16 provided with recessed parts such as grooves or holes on the outer circumference of the roller is installed close to the powder jet nozzle 20, a powder layer 12, in which powder is filled to be contact with a part of the outer circumference of the powder supply roller, and the flow of a gas flowing to the powder jet nozzle are provided in a part of the outer circumference of the powder supply roller, the powder filled in the recessed parts 11 of the outer circumference of the powder supply roller is taken out with the flow of the gas by rotating the powder supply roller 16 to be jetted from the powder jet nozzle 20 close to the powder supply roller and the powder jet machining having the excellent machining efficiency is performed by changing the depth or the size of the recessed parts 11 of the powder supply roller corresponding to the gap of the powder jet nozzle to make the concentration of powder in the powder jet nozzle 20 constant and changing the number of rotations of the powder supply roller 16 to jet in a jet concentration suitable for the powder jet machining.
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