The embodiment of the invention discloses an automatic
synchronizing device for lubricating and tapping of a
big data connecting piece. The automatic
synchronizing device comprises a drilling
machine,a mounting frame is sleeved on a main shaft of the drilling
machine, a lubricating
assembly for lubricating a screw tap is fixedly mounted below the mounting frame, an annular oil
pipe used for providing lubricating oil for the lubricating
assembly is further arranged below the mounting frame, and the annular oil
pipe is connected with an external
oil tank through a hose; and the lubricating method comprises the steps that the lubricating device is mounted on the drilling
machine, and connection between the lubricating device and the external
oil tank is completed; then the position of an oilbrushing block is adjusted according to the
diameter and the end position of the screw tap, tapping is started for tapping, the lubricating oil is extruded out of the
oil storage tank, and oil brushing of the screw tap is completed through a
brush on the oil brushing block. In use, when the tapping machine descends, a
piston block can be pressed downwards to extrude the lubricating oil onto the oil brushing block; and therefore, when the screw tap rotates, uniform
coating can be realized, and the problem of non-uniform
coating can be avoided.