Blade grinding device suitable for large-diameter maize milling cutter

The utility model provides a blade grinding device suitable for a large-diameter maize milling cutter, and belongs to the technical field of wood cutting machining. The blade grinding device is composed of a power mechanism, a clamping mechanism, a blade grinding mechanism, an auxiliary guiding mechanism, a distance adjusting mechanism, universal wheels and a fixing supporting mechanism. The overall size of the blade grinding device is 1600 mm * 1000 mm * 674 mm, linear movement in a plane under two degrees of freedom can be achieved, the range of the diameter of applicable cutters is 50 mm to 500 mm, and the range of the length of the applicable cutters is 0 mm to 800 mm. The blade grinding device is provided with two diamond clad layer grinding wheels, a magnetic fan is arranged in the blade grinding device, hook-shaped collecting grooves are formed in the tail ends of fan blades, and therefore metal powder scraps generated in the blade grinding process can be conveniently collected. Three motors are adopted in the blade grinding device, the large motor is directly connected with a reduction gearbox, and the two small motors are directly connected with the grinding wheels. The auxiliary mechanism comprises a lighting device, an independent drill bit capable of being replaced and a clamping device. The blade grinding device can be in a movable state and a fixed state through the fixing supporting mechanism. The cutter grinding process of the large-diameter maize milling cutter can be independently completed, and the blade grinding device has the advantages of being wide in adjustable range, low in dust pollution, high in efficiency and the like.