The automatic production line is a production system which is composed of the workpiece transmission system and the control system. It connects a group of automatic machine tools and auxiliary equipment according to the technological sequence, and automatically completes all or part of the manufacturing process of the product.
In the 1920s, with the development of automobile, rolling bearing, small motor, sewing machine and other industries, automatic thread began to appear in the machinery manufacturing, the earliest one is the automatic thread of combined machine tool. Before the 1920s, first in the automotive industry, there were flow production lines and semi-automatic production lines, and then developed into automatic lines. After the Second World War, the number of automatic lines increased sharply in the machinery manufacturing industry of the industrial developed countries