Portable cutting device for machining

The utility model relates to a portable cutting device for machining, which comprises a bottom plate, a cutting mechanism, a clamping mechanism and a knife sharpening mechanism are arranged on the bottom plate, the cutting mechanism comprises a fixed seat and a cutting knife, and a cutting groove is formed in the bottom plate; the clamping mechanism comprises two clamping units which are oppositely arranged, each clamping unit comprises a sliding block, a screw rod, a limiting block and a measuring scale, a sliding groove is formed in the bottom plate, the screw rod is in threaded connection with the sliding block, the screw rod is in threaded connection with the limiting block, and the limiting block is in profile connection with the sliding groove; the knife sharpening mechanism comprises a knife sharpening part and a sliding rod, a groove is formed in the knife sharpening part, knife sharpening stones are arranged on the inner walls of the two sides of the groove, a moving groove is formed in the bottom pl