Surface defect detection apparatus

The present invention relates to a surface defect detection apparatus, which includes a frame, an inspection station, optical sensors, detection lasers and a CCD image sensor. The frame includes a beam, a vertical beam and a rail; the rail is mounted on the frame top; the inspection station is installed in the frame by positioning rib plate; the detection lasers and CCD image sensor are slidably connected with the rail through positioned blocks; the positioning block includes a running gear, a positioning table and an inspection station; the detection laser sand CCD image sensor are embedded in the upper surface of the inspection station; and the detection lasers are arranged in an array surrounding the CCD image sensor, and the optical sensors are uniformly distributed on the surface of the inspection station. The apparatus has simple and compact structure, rational layout and high precision, can meet the needs of surface defect detection of small size monomer structure and surface defect detection of a large-size continuous structure, thus greatly improving the usage flexibility and widening the adaptability.