CUTTING LIQUID SUPPLY/RECOVERY DEVICE FOR MACHINE TOOL

Japanese Patent JP2022084269

A

To provide a cutting liquid supply/recovery device for a machine tool which can suction a cutting liquid remaining in a spindle in a very short time.SOLUTION: A cutting liquid supply/recovery device for a machine tool includes: a switch valve 5 disposed on a cutting liquid supply/recovery path 4; an ejector 6; and two pumps 7, 8. The switch valve 5 has a spindle side port 5c, a main pump side port 5a, and an ejector side port 5b. A main pump 7 for supplying the cutting liquid to a spindle 2 is provided between the main pump side port 5a of the switch valve 5 of the cutting liquid supply/recovery path 4 and a cutting liquid tank 3. A sub pump 8 is provided between a suction side port 6c of the ejector 6 of the cutting liquid supply/recovery path 4 and the cutting liquid tank 3. The cutting liquid in the cutting liquid tank 3 is supplied to the suction side port 6c of the ejector 6 by the sub pump 8 to generate a negative pressure between the ejector side port 5b of the switch valve 5 and the suction side port 6c of the ejector.SELECTED DRAWING: Figure 1

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AOYAMA TOMOSHI
GOTO YUKIO
SEGAWA HISASHI
IZUI YASUKI

JP2020196014A

June 07, 2022

November 26, 2020

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OKUMA MACHINERY WORKS LTD

B23Q11/10

Naoto Matsumura
Akira Watanabe
Naoyuki Tamai

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