Automatic optical detection system of electric tool control circuit board

The invention discloses an automatic optical detection system for an electric tool control circuit board, which comprises a box body, a conveying belt is arranged on the surface of the top of the box body, conveying panels are arranged on the two sides of the conveying belt, a plurality of transmission plates are arranged in the conveying panels, and clamping assemblies are arranged on the tops of the transmission plates. The clamping assembly comprises a first positioning seat and a second positioning seat, and a supporting plate is arranged at the top of the first positioning seat. Through the arrangement of the conveying panel, the clamping assembly and the limiting plate, a circuit board moves to the surface of the workbench on the bearing plate through the conveying belt, and a first electric lead screw of the clamping assembly can push a second positioning seat to move towards the conveying belt so as to adjust the position of the limiting plate; after the bearing plate is clamped by a plurality of limi