The utility model relates to a multi-knife multi-stage stone cutting machine composed of a cutting knife group, a stone conveying platform, a positioning guiding plate and a frame. The cutting knife group is arranged on the upper part of the stone conveying platform and placed on the frame, and the positioning guiding plate is fixed between the cutting knife groups; The cutting knife set is composed of a motor, a belt, a cutter wheel shaft and a cutting tool, and the cutting tool is fixed on the cutter wheel shaft. The stone cutting machine can respectively cut the stone materials into different depths, and can process the stone materials below 1 m3, which can turn waste into treasure, greatly save stone resources and protect the environment. Mechanical cutting of various types of stone can be carried out, and the processing efficiency is high, and the use of small stones is effective, so that the production cost is low.
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