Fixing device for detection and preparation of various cutters

The utility model relates to the technical field of cutter detection, and discloses a fixing device for detecting and preparing various cutters, which comprises a device body, a fixing mechanism, a supporting mechanism, a protecting mechanism and a clamping mechanism, the fixing mechanism is positioned below the device body, the supporting mechanism is positioned at the upper end of the fixing mechanism, and the protecting mechanism is positioned below the fixing mechanism. The protection mechanism is located in the middle of the supporting mechanism, and the clamping mechanism is located in the middle of the upper end of the fixing mechanism. According to the fixing device for detection and preparation of the various cutters, the protective cover shell is arranged, during use, a lifting rod is driven to drive the protective cover shell to move downwards, and when the protective cover shell makes contact with the fixing base, a limiting block is clamped in a fixing groove, so that the protective cover shell c