At present, the general trend of foreign metal spinning is to develop in the direction of scale, serialization, high precision, multi-function and automation.
- 1. Develop in the direction of large-scale and high-precision. Due to the needs of cutting-edge technology, large-scale high-precision spinning machines were developed. In 1966, the United States built a number of heavy-duty spinning machines. Among them, the “green giant” was a very large metal spinning machine at that time. Stamping processing, can rotate workpieces with a thickness of φ6m and a steel plate thickness of 127mm. Germany also made a large vertical spinning machine that can rotate the φ6m head. It is understood that there are spinning machines capable of spinning φ7.6m parts abroad.Development of spinning machines for various purposes. One machine can perform ordinary spinning and strong spinning, as well as finishing, curling, necking, trimming and other processes. The APED series of machines in Leifeld, Germany, belong to this type of metal spinning.
- 2. Hot and cold spinning machine. The existing powerful spinning machine is equipped with a heating device, a temperature measurement system, a cooling device for the main shaft and the runner, and a constant temperature control device for hydraulic oil for thermal spinning. The heating device generally uses an electronic device to automatically control the temperature of the blank.
- 3. Serialization of spinning machine. Such as PLB, ATM, APED, ST, VDM, BOD series spinning machines produced by Leifeld Company in Germany, Floturn series spinning machines produced by Rocky-Xipley Company in the United States, and Hydrospin series spinning machines produced by Cincinnati Company.
- 4, using automatic control. In order to improve production efficiency, metal spinning is equipped with hydraulic profiling tracking device, digital control system and TV monitoring system. The operator does not need to approach the rotating workpiece. In the early 1960s, the spinning machine used a semi-automatic mechanism, and the loading and unloading was manual. Several newly designed spinning machines realize automatic control, and the cost is reduced by 50%.
