Here's the title translated into English and properly capitalized: Analysis of Precision Stretch Parts Technology and Process

Principles of Precision Stamping Parts Stretching Technology

The stretching technology of precision stamping parts utilizes molds to apply pulling force on the surface of the workpiece, causing the workpiece to deform. By controlling the magnitude and direction of the pulling force during the forming process, the material can be stretched. During the stretching process, the material undergoes axial and circumferential plastic changes, altering the shape and size of the workpiece.

The key to the stretching technology of precision stamping parts lies in reasonably selecting the shape of the mold and the position where the pulling force is applied. By changing the shape of the mold and the position of the applied force, different shapes of stretching forming can be achieved. At the same time, the magnitude and speed of the pulling force must be controlled to avoid local over-stretching or breakage.

The stretching process for precision stamping parts under progressive dies uses metal sheets as raw materials. Through the coordinated actions of progressive molds, the metal sheets are formed into the desired shapes. This process generally includes three steps: feeding, stretching, and demolding.

Feeding: The metal sheet is fed into the mold, typically using mechanical or pneumatic feeding methods. During the feeding process, it is necessary to ensure that the metal sheet accurately enters the mold and that the feeding speed matches the processing speed to avoid defects such as tearing or excessive stretching.

Stretching: In the stretching station, stress is applied to the metal sheet to cause deformation. During the stretching process, parameters such as the magnitude, speed, and duration of the stress need to be controlled to avoid issues like metal sheet breakage or uneven stress. Hydraulic or mechanical drives are typically used to apply the stretching force.

Demolding: After stretching is completed, the finished product is ejected from the mold. Pneumatic or mechanical demolding methods are usually employed.

Precision Stamping Parts Process Parameters

The stretching process for precision stamping parts under progressive dies requires the reasonable setting of process parameters to ensure the quality and dimensional accuracy of the finished products. Here are some commonly used process parameters:

Stretch Force: Stretch force refers to the magnitude of stress applied to the metal sheet. The size of the stretch force is related to factors such as the material properties, size, and stretching speed of the metal sheet. Excessive stretch force can cause the metal sheet to break, while insufficient stretch force may result in uneven stress.

Stretch Speed: Stretch speed refers to the speed of the metal sheet during the stretching process. The choice of stretch speed should be based on the performance and shape of the metal sheet. Excessive stretch speed can cause stress concentration and excessive heating, while too slow a stretch speed lowers production efficiency.

Stretch Time: Stretch time refers to the duration of the stretching process. The length of the stretch time affects the strain and stress distribution of the metal sheet. Prolonged stretch time can lead to over-stretching and loss of elasticity in the metal sheet, while too short a stretch time can affect the dimensional accuracy of the finished product.

Mold Gap: Mold gap refers to the distance between the upper and lower molds. The size of the mold gap should be determined based on the thickness and material properties of the metal sheet. Excessive mold gap can lead to oversized finished products, while too small a mold gap can result in poor surface quality.

By reasonably setting the above process parameters, the stability and quality control of the stretching process for precision stamping parts under progressive dies can be ensured, resulting in high-precision, high-quality stretching products.

Development Trends in Precision Stamping Parts Stretching

With the continuous advancement of industrial technology, the preparation technology of precision stamping parts stretching is also constantly evolving. Here are a few development trends:

Digital Design and Simulation: With the continuous advancement of computer technology, the design and simulation of precision stamping parts stretching technology can be better realized. Through digital design and simulation, the stress distribution and deformation during the forming process can be accurately predicted, thereby improving product quality and efficiency.

Application of New Materials: With the continuous development of new materials, the application range of precision stamping parts stretching technology is also expanding. New materials with better mechanical and corrosion resistance properties can meet higher product requirements.

Automated Production: With the continuous advancement of automation technology, the production process of precision stamping parts stretching technology can also be automated. Automated production can improve production efficiency and product quality.

Environmental Protection and Energy Saving: The development of precision stamping parts stretching technology increasingly focuses on environmental protection and energy conservation. By optimizing production processes and material usage, waste and energy consumption can be reduced, improving resource utilization.