| 摘要 |
PROBLEM TO BE SOLVED: To provide a spray device effectively used for supplying the proper amount of fog as MQL (minimum quantity of lubricant) by producing the necessary amount of fog on the basis of air consumption at a blade tool side, corresponding to various sizes from a small blade tool to a large blade tool by controlling a fog producing mechanism for small flow rate and a fog producing mechanism for large flow rate. SOLUTION: The fog producing mechanism 5 has the large and small two kinds of fog producing units 5a, 5b of different capacities, a flow rate detector 11 is mounted at a primary side of the fog producing unit 5a of small capacity for transmitting an electric signal with a predetermined threshold value, and a second switch valve 12 composed of a solenoid valve and the like is mounted at a primary side of the fog producing unit of large capacity. As the fog producing units 5a, 5b, the fog producing units of a type to supply the oil (lubricant or cutting agent) to a producing part by driving a pump, are used. For example, the fog producing unit 5a preferably comprises a needle nozzle having an axial fluid inflow hole, a nozzle body mounted at a downstream side of the needle nozzle, and an atomizing mechanism. COPYRIGHT: (C)2004,JPO
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