Metal spinning application and misunderstanding

With the continuous development of the metal spinning process, the process of metal spinning has gradually been understood and applied by more and more people. In the field of processed products, metal spinning has many common features with CNC turning and stamping and drawing. part.

Forming ability

The forming ability of metal spinning has more advantages than manual spinning, stamping and stretching. Manual spinning is limited by human strength. When the thickness of the material reaches a certain thickness, human strength cannot overcome the plastic deformation force required by the material. Metal is extruded and deformed. Large-scale spinning has obvious advantages for metals with larger thicknesses. Compared with stamping and drawing, stamping and drawing do not have obvious advantages in metal spinning process in the field of shrinking, taper drawing, or concave drawing. In addition, under the same conditions, the drawing height of metal spinning will be higher. Higher than punching and drawing heights.

Precision

Although the metal spinning is extruded by the spinning wheel controlled by the CNC system, the final accuracy of the spinning is not very close to the accuracy of the CNC lathe known to the public, because the stress rebound performance of the material will affect the accuracy of the product, usually spinning. The accuracy of pressed products is much lower than that of machined products. In addition, most metal spinning machines have spinning and turning functions, but the accuracy of turning on metal spinning machine tools cannot reach the accuracy of lathe machining molds, because spinning products are thin-walled parts, which will appear during the turning process. The phenomenon of deformation and vibration, so the actual accuracy of the spinning products after turning is not as high as that of traditional turning parts.

Compared with metal spinning and stamping and drawing, the accuracy of metal spinning is usually lower than that of precision drawing, but when the material wall thickness is relatively low, the tensile stamping parts are not strong enough due to the insufficient 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 precision of spinning products will be higher than that of manual spinning, because the power of manual control in each spinning process cannot be consistent, so the dimensional stability is poor.

manufacturing cost

The mold cost of metal spinning is lower than that of stamping and drawing, the production cycle is shorter, and it is more convenient to adjust the mold. Most of the single-piece production efficiency of spinning products is not as good as stamping and stretching, which means that the manufacturing cost of single-piece spinning products is higher. The main advantages of metal spinning in the process of mass production are that the production process is flexible and the shape of the processed rotary parts It is more complex, and the processed metal materials are thicker and larger in size, which has obvious advantages in small and medium-sized batch production. In addition, the single-piece spinning process takes a long time, but there are many stamping and drawing processes, which require more production personnel, logistics costs and site costs.

For some metal revolving thin-walled parts, stamping or stretching can be used to make blanks, and then spinning can be used for final forming, which can not only reduce production time, but also overcome the disadvantages of stamping and stretching that cannot be used for shrinkage and special-shaped products. .