cnc cylindrical grinding machine

　　What is the difference between stamping and CNC

　　Stamping and CNC (Computer Numerical Control) are two different metal processing techniques, which have significant differences in processing principles, scope of application, and processing characteristics.

　　1、 Processing principle

　　Stamping is a processing method that applies external force to plates, strips, pipes, and profiles through molds, causing them to undergo plastic deformation or separation, in order to obtain the desired shape and size of the workpiece. Stamping processing is usually carried out on a punch press, using the slider of the punch press to drive the upper and lower molds of the mold to perform clamping and opening actions, achieving stamping and forming of the workpiece.

　　CNC machining is a method of cutting workpieces using computer-controlled machine tool motion and tool cutting. CNC machining centers are usually composed of machine tool bodies, control systems, tool libraries, and automatic tool changing devices, which can achieve high-precision and high-efficiency machining of workpieces.

　　2、 Scope of application

　　Stamping is suitable for mass production of metal parts with simple shapes and small sizes, such as car casings, electrical casings, tableware, etc. Stamping processing can quickly produce a large number of identical parts, with the advantages of high production efficiency and low cost.

　　CNC machining is suitable for processing small batches, multiple varieties, and complex shaped metal parts, such as aerospace parts, medical equipment parts, molds, etc. CNC machining can achieve high-precision and complex shape machining, with the advantages of high machining accuracy and strong flexibility.

　　3、 Processing characteristics

　　1. Precision: The precision of CNC machining is usually higher than that of stamping, and can reach micrometer level or even higher precision. The accuracy of stamping processing is affected by factors such as mold accuracy and sheet thickness, and is generally around the millimeter level.

　　2. Surface quality: CNC machining can achieve good surface quality, and the surface roughness can reach Ra0.8 μ m or less. The surface quality of stamping processing is relatively poor, and there may be some defects such as scratches and indentations on the surface.

　　3. Processing efficiency: Stamping processing is usually more efficient than CNC processing and can produce a large number of parts in a short period of time. The efficiency of CNC machining is influenced by factors such as machine performance, tool selection, programming techniques, etc., and is generally lower than that of stamping machining.

　　4. Processing cost: The cost of stamping processing is usually lower than that of CNC processing, especially in large-scale production, where the cost advantage of stamping processing is more obvious. The cost of CNC machining is relatively high, mainly due to the large investment in machine tool equipment, cutting tools, programming, and other aspects.

　　In summary, stamping and CNC machining are two different metal processing techniques, which have significant differences in processing principles, scope of application, and processing characteristics. In practical applications, the appropriate processing technology should be selected based on factors such as the shape, size, accuracy requirements, and production batch of the parts to achieve the best processing effect and economic benefits.

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