In the field of car body manufacturing, it includes four major processes: stamping, welding, painting and final assembly. However, the equipment required by China for these processes has completely relied on imports for a long period of time, so the cost of automobile manufacturing has remained high. In order to reduce costs, our company began to find a breakthrough in the “cost-effective” stamping equipment.

After more than ten years of technology introduction, absorption, and integration innovation, China’s stamping production line technology has quickly shortened the gap with the international advanced level, and has reached the international leading level in technical fields such as large multi-station presses and servo presses.

Automotive stamping partsThe process production efficiency is very high, the production cost is low, it is easy to realize mechanization and automation, and it can also produce complex parts that are difficult to process by subtractive metal processing methods, which is very suitable for the manufacture of body parts.

Generally speaking, 70% of the auto body parts you see are stamped and formed. Stamping is a process of body manufacturing. The level of stamping directly determines the quality of the body, and it also affects the subsequent processes.

How is the car shell stamped out?

So, the question comes again, how to realize rapid stamping quickly and well? This requires a coherent stamping production line. The current stamping production line has front-end automation equipment, which is stamped by a press, and then transported to the back-end equipment through a conveyor. Of course, the press is the “protagonist”.

The first step of the press is to drive the motor to work through the transmission mechanism. The transmission is composed of belts and gears to decelerate and increase the force. The structure of the transmission machine generally includes a screw mechanism, a crank connecting rod mechanism and a hydraulic cylinder. Therefore, the press is also divided into these three categories. The common crank press, also called mechanical press, is a common type of press.

The mechanical presses generally used in automobile stamping lines are very large, and the load is also large. The weight of the mold to be replaced is also several tons. The force loaded on the body parts is often thousands of times the weight of the car, and a press is required. The fuselage is not deformed, and the difficulty can be imagined.

Moreover, a large press can easily cost millions of people just by casting a single body. In order to enhance the transmission capacity, most of them are equipped with herringbone gears. The lathe used to process a gear is tens of meters long, and the gear shaping process may take several months.

car partsVery large or very small will have higher requirements for the precision of the machine. The press is a typical large part. The production process is complicated, the stability and accuracy are high, and the manufacturing cycle is long. Chinese press manufacturers want to win the market. , Is not easy.

By Jiatong