Cutting fluid spraying device for numerical control tool and using method of cutting fluid spraying device

The invention relates to the field of numerical control cutter cutting fluid spraying equipment, in particular to a cutting fluid spraying device for a numerical control cutter and a using method thereof.The cutting fluid spraying device comprises a supporting bin shell, a containing cavity used for storing cutting fluid is formed in the supporting bin shell, and a guide-in hole used for guiding in the cutting fluid is formed in the top end of the supporting bin shell; a filter screen is arranged at the lead-in hole, a fixing mechanism used for clamping a workpiece is arranged in the middle of the top end of the supporting bin shell, a detachably-arranged supporting piece is arranged on the fixing mechanism, and a plurality of sets of abutting assemblies distributed in an annular array are further arranged on the fixing mechanism; a liquid pump communicated with the interior is arranged on the side face of the supporting bin shell, one end of the liquid pump is connected with a liquid outlet pipe, one end of