On June 11, 2013, the "Shenzhou 10" manned spaceship was successfully launched. Its successful launch has condensed the efforts of too many Chinese researchers, including several gas cylinders developed by AVIC Manufacturing Institute. Some of these cylinders are installed in the resource cabin of the target aircraft, and some are installed in the propulsion cabin and return cabin of the spacecraft. The manufacture of these aluminum alloy lined non weld gas cylinders relies on the metal spinning forming technology.

Since the early 1960s, AVIC Manufacturing Institute has taken the lead in developing research on spinning technology and equipment in China. In the past 50 years, AVIC Manufacturing Institute has developed dozens of spinning equipment and more than 50 kinds of spinning assemblies, making outstanding contributions to the development of China's aviation, aerospace, weapons and other national defense fields and other areas of the national economy.

Over the past 50 years, AVIC Manufacturing Institute has successively developed PX series ordinary spinning machine tools, SY-2~SY-20 powerful spinning machine tools, PD series special spinning machine tools for belt pulley, special spinning forming machine tools for aluminum alloy wheel hub and special spinning machine tools for closing the aluminum alloy liner of CNG gas cylinders, some of which have been exported. At present, the spinning equipment designed and manufactured has realized full numerical control and intelligence. Machine tool components such as guide rail, bearing, lead screw, grating ruler, various proportional valves, servo valves, proportional servo valves, control systems, etc. are in line with international standards in manufacturing mode. The largest horizontal three spinning wheel CNC powerful spinning machine tool and the largest horizontal double spinning wheel CNC powerful spinning machine tool developed by the manufacturer have been used in the aerospace field for many years. Long term use shows that the spinning equipment developed by the manufacturer has high precision, good overall rigidity and high reliability. The large cylindrical parts and large head cover parts produced have replaced the drum welding and split punching welding, improving the strength, eliminating or reducing the welding seams, It improves the reliability of components, reduces the weight of the whole machine, and makes contributions to China's aerospace industry.

The largest CNC vertical powerful spinning machine tool in Asia developed by AVIC Manufacturing Institute for an aerospace enterprise has completed process acceptance in July 2013. The equipment is a vertical three rotating wheel structure. The whole equipment is 14 meters high, the total weight of the equipment is 600 tons, the total operating power of the equipment is 1200 kilowatts, the thrust of a single rotating wheel is 100 tons, the rotary diameter of the machine tool is 2.6 meters, it can spin large cylindrical parts with a diameter of 2.6 meters and a height of 3.5 meters, it can spin and roll ultra-high strength steel with a thickness of 35 mm to 2 mm, and the wall thickness accuracy of the spun cylinder can reach ± 0.05 mm.

It is very difficult to design and manufacture large-scale powerful spinning equipment. The difficulty lies in that such equipment not only has the huge pressure of large-scale pressure processing equipment, but also needs to have the high-precision of large-scale CNC equipment. The development of this equipment took nine years. At the initial stage of project approval, the manufacturing institute overcame a series of difficulties such as weak foundation of relevant industries, little technical reserves, great difficulty in overall design and manufacturing of equipment, oversized components, few domestic manufacturers to choose from, and repeated production and manufacturing of individual oversized components. The electromechanical joint commissioning was completed at the end of 2012. The equipment has good rigidity as a whole, and has unique functions such as three spinning pressures self regulating and self balancing, synchronous feed stagger spinning, etc. It has the characteristics of intelligent spinning, and the overall technology has reached the international advanced level. This equipment is also a key equipment in the major scientific and technological projects of High grade CNC Machine Tools and Basic Manufacturing Equipment.

The spinning forming technology is different from other metal processing and has a strong processability. Even the CNC spinning equipment requires a large amount of process experience for the arrangement of the spinning process, the reduction of the spinning wheel for each feeding, the feeding speed of the spinning wheel, and the temperature and times of heat treatment during the spinning process. Before the 1980s, the spinning process research of the manufacturing institute was mainly used for the model pre research and process research of aerospace. It successively carried out the process research on more than 40 types of curved busbar parts, cylindrical parts, spherical parts, conical parts, variable wall thickness parts, and parts with internal and external stiffeners, such as fairing, heat shield, shell, flame tube, fuel tank, nose cover, nose cone, etc. of various models, and some parts were transferred to medium and small batch production. The largest space installed curved busbar parts developed by the manufacturing institute are ￠ 800 × 2200mm, the largest cylindrical part is ￠ 2000 × 3500 mm. In particular, the manufacturing institute has accumulated rich experience in the spinning forming of complex parts such as curved generatrix, has special research on cold spinning, warm spinning and hot spinning of special materials, and has stable and unique technical advantages on how to solve film sticking, demoulding, and how to solve the expanding and shrinking of parts in the spinning process. Since the reform and opening up, in addition to developing 3-5 new products for aerospace installation every year, the manufacturing institute has developed nearly 20 kinds of civil product parts, which are respectively used in food machinery, pharmaceutical machinery, light industrial machinery, locomotives, automobiles and other industries.

The manufacturing institute has carried out extensive process research on spinning materials since its inception. Before the 1980s, the spinning materials were mainly low carbon steel, aluminum alloy, copper alloy and stainless steel. After the 1990s, with the development of China's aerospace weapon industry, the application of superalloys, titanium alloys, high-strength steels and ultra-high strength steels has become more and more extensive. In recent years, the manufacturing institute has focused on the research of precision spinning forming technology of this kind of materials, and successfully applied it to achieve medium and small batch production. Carry out hot spinning process research on refractory metals such as tungsten and molybdenum and develop special spinning equipment to realize industrial production of such materials.

The manufacturing institute is committed to the development of spinning process and equipment, while paying special attention to the industrialization of spinning technology. In 1986, on the basis of a large number of process tests, a professional manufacturer of sheet spinning pulleys was jointly established with Jingxian County, Hebei Province, which produced more than 2 million pulleys of various specifications annually, forming a supporting capacity with imported models such as Volkswagen. In 2000, the spinning equipment was self-made in China, and the integral spinning forming production line for the aluminum alloy liner of CNG gas cylinders was established, which eliminated the welding seams of the cylinder body, reduced the weight of the whole cylinder, and improved the overall strength of the cylinder. The maximum diameter of cylinder liner can reach φ 450mm, which successfully solved the technical problems such as wrinkling and thickening in the spinning process of large-diameter aluminum alloy liners. Now, the annual production capacity of 25000 large CNG aluminum alloy liners has been formed.

Screw on belt pulley and starter housing.