Easily-replaced cutting part of stone cutting machine

The utility model discloses an easy-to-replace cutting component of a stone cutting machine. Cutting device outer shell, the device further comprises a fixing mechanism and a mounting mechanism. A bearing protective cover is fixedly arranged on the front surface of the cutting device outer shell; a bearing rotary disc is fixedly arranged in the center of the bearing protective cover. The fixing mechanism comprises an auxiliary fixing cover, an adjusting screw rod, a locking clamping cap and a clamping fixing plate. A clamping and fixing plate mounted at the bottom of an adjusting screw rod isdesigned; the fixed insection is designed and mounted on the auxiliary fixed cover; the inner side of the load-bearing protective cover is reinforced by the connecting insection; the bearing protective cover and the auxiliary fixing cover are connected, the auxiliary fixing cover is greatly and conveniently disassembled and replaced, the connection stability of the bearing protective cover and theauxiliary fixing cover is