Detailed Explanation of Stamping Processes and Equipment

Detailed Explanation of Stamping Processes and Equipment

📋 Core Classifications of Stamping Processes
Stamping processing is broadly divided into two core process types, adapting to the forming requirements of different parts:

Separation Process: This involves breaking and separating the blank along a specified contour to obtain a workpiece of a predetermined shape and size. Common types include blanking, punching, cutting, and slitting. During processing, the stress in the blank will exceed the material's strength limit.

Deformation Process: This involves plastically deforming the blank without causing damage, thereby changing its shape and size to obtain the target part. Common types include bending, drawing, flanging, bulging, and necking. During processing, the stress in the blank is between the yield strength and the ultimate tensile strength.

Based on the degree of process combination, stamping can also be divided into single-process blanking, compound blanking, and continuous blanking. The optimal process scheme can be selected based on the production volume, precision requirements, and shape complexity of the parts.

⚙️ Mainstream Stamping Equipment Types and Applications
Stamping equipment, also known as presses, is the core power source for stamping processes. Common mainstream types are as follows:

**Mechanical Presses:** Crank presses are the most common. They utilize a crankshaft and connecting rod mechanism to convert the rotary motion of a motor into the linear reciprocating motion of a slide block. They offer high processing speed and convenient maintenance. Open presses are easy to operate due to their three open sides, while closed presses offer good rigidity and high precision, suitable for processing large and medium-sized precision stamped parts.

**Hydraulic Presses:** Hydraulic presses are the most widely used. They rely on a hydraulic system to generate high pressure, offering strong stroke controllability and are suitable for stamping large-sized, high-deformation, thick-plate parts.

**Servo Presses:** These use servo motors for direct drive. The slide block motion curve can be digitally and precisely programmed. They offer advantages such as high precision, low noise, long die life, and wide process adaptability, representing the current mainstream upgrade direction for precision stamping.

Auxiliary equipment also includes shearing machines, uncoilers, levelers, and feeders, enabling fully automated stamping production.

🔗 The Relationship Between Stamping Process and Equipment
Sheet metal, dies, and stamping equipment are the three core elements of stamping processing. These three must be matched to produce qualified parts: The stamping process determines the tonnage, stroke, and precision level of the equipment to be selected, while the performance limit of the stamping equipment directly determines whether the process can be implemented. For example, parts requiring high-precision coaxiality need to use a compound die paired with a high-precision closed-type press, while large-volume small precision parts are suitable for high-speed continuous stamping processes and high-speed precision servo presses.