With the continuous progress of science and technology, mechanization has largely replaced labor and developed a lot of intelligent mechanical equipment, which not only reduces the intensity of labor but also improves the working speed. The precision appearance inspection machine uses machine vision technology to detect the appearance quality of products through visual inspection equipment. This is a highly precise equipment design that mainly detects product appearance size, defects, scratches, burrs, defects and other issues to achieve high-speed product appearance Automatic inspection. The precision appearance detector has high accuracy and can reach millimeter-level detection speed, which can not only save labor but also ensure accuracy. It can run continuously for 24 hours, monitor measurement data in real time, and carry out process control. It is suitable for products of the same type and different specifications. The design of the precision appearance inspection machine is mainly to inspect the finished product. The inspection procedures need to be set including observation distance, observation angle, light intensity, observation time, etc. The observation distance needs to be within 30cm to see the appearance problems. The observation angle needs to meet the horizontal orientation of 45±15; It only takes 5 seconds to scan the entire detection surface under natural light or 60W-100W fluorescent lamp lighting, which is not only fast but also accurate. All-round testing for different material combinations and different testing items is highly versatile. Rigorous structural design, smaller footprint, lower energy consumption, can achieve both appearance detection and size measurement functions. The appearance design of the product is simple in shape, extracting design elements from the corporate culture, increasing the affinity of the equipment with smooth and rounded lines, and visually giving people modern, atmospheric and technological beauty. Sophisticated silk screen LOGO design enhances the brand characteristics and recognition of products. Adopting modular design, the sheet metal shell process is exquisite, easy to assemble and maintain. The operation is very simple and convenient.