Main shaft tool loosening and broaching module integrating center inner cooling and automatic detection functions

The invention discloses a main shaft broach loosening and broaching module integrating center inner cooling and automatic detection functions. The main shaft broach loosening and broaching module comprises a broach mechanism, a push broach mechanism, a position detection device and a center inner cooling assembly. The broach mechanism is arranged in the center of the milling head main shaft and can realize automatic tensioning of a cutter; the cutter pushing mechanism is arranged at the tail part of the milling head and is positioned above the cutter pulling mechanism, so that automatic loosening of a cutter can be realized; the position detection device is arranged in the push broach mechanism and can judge the broach loosening state of the main shaft by identifying the position of the broach mechanism; and the central inner cooling assembly is arranged above the push broach mechanism and can provide a central inner cooling function for the milling head. The milling head is compact in structure, easy to mach