Visual detection device and detection method for outer wall surface of cylindrical part

The invention relates to a visual detection device and method for the outer wall surface of a cylindrical part, and belongs to the technical field of detection devices. The device comprises a workbench component, a displacement control component, a measuring head rotating component, a clamping component and a light supplementing component. The light supplementing component with the lifting light source penetrates through the workbench and the clamping component and is arranged in the cylinder part, and the clamping component is provided with a chuck with a secondary range adjusting function; the displacement control part is provided with a motor position adjusting device, a counterweight unit, a longitudinal secondary position adjusting device and a terminal rotating device; the vision measurement device is arranged at the terminal of the displacement control part. The device can drive the visual measurement device to accurately move to the cylinder part, and the visual detection of the appearance of the cyli