Positioning mechanism for cold-rolled steel knife machining

The utility model relates to the technical field of machining equipment, in particular to a positioning mechanism for machining a cold-rolled steel knife, which is characterized in that a raw material plate is placed in a machining groove, a second motor is started to drive a lead screw to rotate, so that a pressing plate is pressed downwards to press and fix the raw material, and a sliding block slides back and forth in a sliding groove to adjust the front and back positions of machining. The second air cylinder drives the machining table to move to adjust the left-right machining position, the overall structure is simple, operation is convenient and fast, raw materials can be rapidly pressed and fixed, taking and placing are convenient, the machining efficiency is effectively improved, and practicability is high; comprising a base, a bottom column, a fixing frame, a first cylinder, a first telescopic rod, a fixing frame, a first motor, a rotating shaft and a drill bit; a sliding base, a sliding block, a sec