The twentieth century in the 1920s, with the development of automobiles, rolling bearings, small electric motors and sewing machines and other industrial development, machinery manufacturing began to appear in automatic line, the earliest appearing is the combination of machine tool automatic line. Prior to the 1920s, firstly in the automobile industry appeared assembly line and semi-automatic production line, and then developed into automatic line. After the second world war, in the machinery manufacturing industry in industrialized countries, the number of automatic line increased dramatically
The use of automatic line for the production of products should be sufficiently large output; product design and process should be advanced, stable, reliable, and in a longer period of time to maintain the basic unchanged. In a large number of large-scale production in the use of automatic line can improve labor productivity, stabilize and improve product quality, improve labor conditions, reduce the production footprint, reduce production costs, shorten the production cycle, to ensure that the production of balanced, with significant economic benefits. [3]
Automated production line in the case of non-intervention in accordance with the prescribed procedures or instructions for automatic operation or control of the process, the goal is "stable, accurate, fast". Automation technology is widely used in industry, agriculture, military, scientific research, transportation, business, medical care, services and family. The use of automated production lines can not only free people from heavy physical labor, part of the mental labor and poor, dangerous working environment, and can expand the function of human organs, greatly improve labor productivity, enhance human understanding of the world and the ability to transform the world
Machine manufacturing industry, there are casting, forging, stamping, heat treatment, welding, machining and mechanical assembly of the automated line, there is also a different nature of the process, which includes a different nature of the process, but also a different nature of the process. There are including different nature of the process, such as blank manufacturing, machining, assembly, inspection and packaging of the integrated automatic line.
Cutting automatic line in the machinery manufacturing industry is the fastest growing and most widely used. Mainly: for the processing of boxes, shells, miscellaneous parts such as a combination of machine tools automatic line; for the processing of shafts, discs and rings and other parts, by the general, specialization or special automatic machine tools composed of automatic line; rotating body processing automatic line; for the processing of small parts of the process is simple rotor automatic line and so on. [4]
1. First determine the beat time: no matter what kind of products, all in its must be completed in the right time to manufacture.
2. Unit flow: For one product only, unit parts handling, assembly, processing, and material pickup.
3. Pilot: A device that enables the production of a visual understanding of the timing of the beat.
4. U-shaped production line: equipment is arranged counterclockwise in the order of work, and one person is responsible for the exit and entrance.
5. AB control: only when the latter project has no product, while the former project has a product situation, the project.
6. Light signal: a device to communicate the abnormalities of the product in the production line process.
7. After the project to receive: the product of the production line to respond to the needs of the latter project