| 摘要 |
The present invention relates to a high pressure cutting oil supplying device for a machine tool, which comprises: a cyclone filter which is connected with a cutting oil tank discharged from a machine tool, and filters cutting oil transferred from the cutting oil tank through gravity separation due to centrifugal force; a clean tank which stores the filtered cutting oil filtered in the cyclone filter, and is connected with the machine tool in order to transfer the filtered cutting oil to the machine tool; a return tank which stores sludge containing cutting oil discharged from the cyclone filter, and is connected with the cutting oil tank in order to transfer the stored cutting oil to the cutting oil tank; an electric switchover valve which is installed in a filtered cutting oil outlet in the cyclone filter, and discharges the filtered cutting oil in the cyclone filter toward the return tank or the clean tank; and a pressure switch which is installed between the cutting oil tank and the cyclone filter, and switches the opening degree of the electric switchover valve depending on the cutting oil supplying pressure to the cyclone filter. Therefore, the high pressure cutting oil supplying device can supply only high quality filtered cutting oil to the machine tool again by injecting filtered cutting oil to the clean tank only when the cyclone filter operates normally, and can extend the life of a high pressure pump accordingly. |
