(1) The drive device installed inside the cutter body and the electric switch installed on the cutter body.
(2) Its characteristics depend on the setting of a transmission device between the cutter body and the cutter head.
(3) The device is connected with the driving device set inside the cutter body, and the cutter head and the transmission device.
(4) The connection is made by plugging and unplugging; the connecting surface of the transmission device and the cutter head is set with a number of plugging holes.
(5) The advantages of the utility model depend on the ability to replace and replace the cutter head in time according to needs, and it can be installed with casing screws below 10mm, which is convenient and fast in specific work and improves work efficiency.