China develops the largest CNC vertical spinning machine in Asia

Recently, AVIC's largest CNC vertical spinning machine developed by AVIC for a certain aerospace company has completed the process acceptance. The equipment is a vertical three-rotary wheel structure. The height of the whole equipment is 14 meters. The weight of the equipment itself is 600 tons. The total operating power of the equipment is 1200 kW. The thrust of a single rotating wheel is 100 tons. The diameter of the machine is 2.6 meters. The diameter of the machine can be 2.6. The large cylindrical part with a height of 3.5 meters can be used to spin the ultra-high-strength steel with a thickness of 35 mm to 2 mm, and the wall thickness accuracy of the cylinder after spinning is ±0.05 mm. The precision is higher than the machining. . The device has three unique functions of self-adjusting self-balancing, self-adjusting self-balancing, and synchronous spinning, and has the characteristics of intelligent spinning. The overall technology has reached the international advanced level. This equipment is also a key equipment in the major science and technology projects of "High-end CNC Machine Tools and Basic Manufacturing Equipment".
Spin forming is a special way of metal plastic forming. Different from other metal processing, it is divided into ordinary spinning and strong spinning. Strong spinning refers to the change of the shape of the blank during the forming process, and the thickness also changes at the same time. Generally, the thickness is reduced. The volume of the blank is constant during the spinning process, and the thinned blank material increases the height of the part. Strong spinning is non-cutting and there is no loss of material during processing.

Strong spinning technology is widely used in the chemical industry, nuclear industry, shipbuilding industry, weapons, aerospace, especially in the manufacture of parts for aircraft and aircraft engines. The technology is now more and more widely used, and the requirements for spinning machines are getting higher and higher, especially for spinning equipment with large turning diameter, large thrust, high precision and high degree of automation. Strong spinning equipment abroad has been serialized and is constantly evolving in the direction of large-scale, multi-purpose and high degree of automation. With the development of computer technology, the spinning machine control system has also been continuously developed. The rotary feed is fully developed to the numerical control, and the spindle shifting has evolved from a graded to a stepless, and has developed to a multi-rotary rotary table spinning machine. The TV monitoring system and the wall thickness ultrasonic automatic measuring device required for processing large-diameter parts have also been applied to spinning machines.

It is understood that on June 11, 2013, the "Shenzhou 10" manned spacecraft successfully launched by China included many cylinders developed by AVIC. Some of these cylinders are installed in the target aircraft resource compartment, and some are installed in the spacecraft propulsion and return cabins. The manufacture of these aluminum alloy-lined weldless gas cylinders relies on metal spin forming technology.