Mold Tech

Stamping Continuous Die Cutting and Bending Deformation

• 2024-09-19

Stamping process is an efficient and economical manufacturing method widely used in industries such as automotive, electronics, and home appliances. Continuous dies, as an important tool in the stamping process, directly affect the shape, size, and surface quality of the products. This article will explore the deformation issues and their causes during the cutting and bending process of stamping continuous dies, and propose corresponding solutions.

Working Principle of Stamping Continuous Dies

Before discussing the deformation issues during cutting and bending, it is important to understand the working principle of stamping continuous dies. Continuous dies typically consist of multiple stations, each completing different processing tasks such as blanking, bending, and stretching. The material continuously moves through the die, undergoing processing at each station, and eventually forming the desired product shape.

Deformation Issues during Cutting

Cutting is a fundamental process in stamping, aiming to separate the material into the required shape and size. During cutting, the material may experience the following types of deformation:

Elastic recovery: After cutting, the material undergoes elastic deformation under stress, leading to unstable dimensions.

Burr: Due to shearing forces, burrs may form along the cut edge, affecting the product's appearance and accuracy.

Bending: Material may bend during the cutting process, especially common in thin sheet materials.

Deformation Issues during Bending

Bending is the process of shaping flat sheet materials into the desired form. Common bending deformation issues include:

Springback: After bending, the material may spring back under elastic forces, resulting in angles and shapes not meeting design requirements.

Cracking: During bending, internal stress in the material may exceed its strength limit, leading to cracking.

Wrinkling: Compression during bending may cause wrinkling in the material.

Analysis of Deformation Causes

Deformation issues in stamping continuous dies are typically related to several factors:

Material properties: Strength, hardness, and elastic modulus of the material directly impact deformation.

Die design: Geometric shape, size, and material selection of the die are crucial for controlling deformation.

Processing parameters: Pressure, speed, lubrication conditions, all influence the degree of deformation.

Equipment precision: The accuracy and stability of stamping equipment are important factors affecting deformation.

Solutions

To address deformation issues in stamping continuous dies, the following measures can be taken:

Optimize die design: Improve die geometry and dimensions to reduce stress concentration and deformation.

Select appropriate materials: Choose suitable materials according to product requirements to minimize deformation and enhance processing performance.

Adjust processing parameters: Control material deformation by adjusting pressure, speed, and other parameters.

Use auxiliary tools: Employ edge flanging rings, lubricants, etc., to reduce deformation and improve processing quality.

Enhance equipment precision: Regular maintenance and calibration of equipment to ensure process stability and accuracy.

Conclusion

Deformation issues during cutting and bending in stamping continuous dies are complex problems that require comprehensive analysis and solutions. By optimizing die design, selecting appropriate materials, adjusting processing parameters, and enhancing equipment precision, deformation issues can be effectively controlled and reduced, thereby improving product quality and production efficiency.

TAG：