With the continuous development of CNC spinning technology, the technology of CNC spinning is gradually understood and applied by more and more people. In the field of processed products, CNC spinning, CNC turning, stamping and drawing have many things in common. section. At the same time, the market has several misunderstandings about the understanding and application of CNC spinning, which will be introduced in detail below.
About machining accuracy
Although CNC spinning is extruded by the spinning wheel controlled by the CNC system, the final accuracy of spinning is not very close to the accuracy of the commonly known CNC lathe, because the stress rebound performance of the material will affect the accuracy of the product, usually spinning The precision of pressed products is much lower than that of machined products. In addition, most CNC spinning machines have spinning and turning functions, but the precision of turning on the CNC spinning machine cannot reach the precision of the lathe processing mold, because the spinning products are thin-walled parts, which will appear during the turning process. The deformation makes the knife and the phenomenon of vibration, so the actual accuracy of spinning products after turning is not as high as that of traditional turning parts. Compared with CNC spinning and stamping and drawing forming, the accuracy of CNC spinning is usually lower than that of precision drawing. However, when the wall thickness of the material is relatively low, the tensile stamping parts are insufficient due to the strength and hardness of the mouth It is easy to deform, and the precision of drawing and stamping will be worse than that of spinning. The accuracy of CNC spinning products is higher than that of manual spinning, because the manual control force in each spinning process cannot be consistent, so the dimensional stability is poor.
About manufacturing costs
The mold cost of CNC spinning is lower than that of stamping and stretching, the production cycle is shorter, and the adjustment of the mold is more convenient. The production efficiency of most spinning products is not as good as that of stamping and drawing, which means that the manufacturing cost of spinning products is higher. The main advantage of CNC spinning in the mass production process is that the production process is flexible and the shape of the processed rotating parts is It is more complex, and the processed metal material is thicker and larger in size, which has obvious advantages in small and medium-sized batch production. In addition, spinning single-piece processing takes a long time, but there are many stamping and drawing processes, which require more production personnel, logistics costs and site costs. For some thin-walled parts of metal revolving body, stamping or stretching can be used to make blanks, and then spinning for final forming, which can not only reduce production time, but also overcome the disadvantages of stamping and stretching that cannot be used for shrinking and special-shaped products.
About molding ability
The forming ability of CNC spinning is more advantageous than manual spinning, stamping and stretching. Manual spinning is limited by human strength. When the material thickness reaches a certain thickness, human strength cannot overcome the plastic deformation force required by the material. The metal is squeezed out. CNC spinning has obvious advantages for thicker metals. Compared with stamping and stretching, stamping and stretching do not have obvious advantages in the fields of shrinking, taper stretching, or concave stretching. In addition, under the same conditions, the stretching height of CNC spinning will be lower. It is higher than the height of stamping and stretching.