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    • 3. 发明专利
    • COMPUTER NUMERICAL CONTROL (CNC) LATHE FOR RETRACTABLE BIT TOOL
    • AU2020100888A4
    • 2020-07-09
    • AU2020100888
    • 2020-05-29
    • YANG XIAODONG
    • YANG XIAODONG
    • B23B3/00
    • The utility model discloses a computer numerical control (CNC) lathe for retractable bit tool, including a machine body, a first transmission assembly, a sliding frame, a second 5 transmission assembly, a guide rod, a sliding cover, a third transmission assembly, a drill bit, a control panel, a power cord, a clamping mechanism and a dustproof device. Through the provision of the clamping mechanism, when a position of the bit tool needs to be adjusted to be retracted or disassembled, it can be retracted into the sliding cover by pressing down the clamping blocks on both sides while the drill bit being in a movable state, then release the 0 clamping blocks to reset a spring and fixation is completed again by pushing out the clamping blocks, so that the problems of being not easy to retract the bit tool and complexity in disassembly and mounting during the use of the existing CNC lathe are solved. Through the provision of the dustproof device, a pulling block can be used to drive a pulling plate to move to the left when the lathe is not in use, so that a dustproof cover covers an upper end of the 5 machine body to prevent dust, thereby solving the problem of floating dust into cutting grooves or drilling hole and causing cutting positions to be deviated in drilling holes next time due to adhesion of dust after the CNC lathe is placed and not used for a long time. 3 8i Fig. 1 9i Fig. 2