Improvement of Improvement of Automotive Door Hinge Seat Die Stamping Technology and Progressive Die Design
1. Introduction
Automotive door hinge seat is an important part of automotive manufacturing and plays a significant role in ensuring the safety and reliability of automobiles. With the development of automotive industry, the production of automotive door hinge seat is changing from traditional punching to die stamping, which has become an important manufacturing process for the production of automotive door hinge seat.
Die stamping is a process in which the workpiece is stamped into the required shape and size under the action of the punch die. In the process of die stamping, there are many factors influencing the quality of parts, such as stamping equipment and mould design, material properties, and process parameters. At present, the production of automotive door hinge seat mainly adopts progressive die and line die. The durability of die is one of the main indicators to measure the economic benefits of production line. In order to reduce the production cost, the optimization and improvement of the stamping process and progressive die design of the automotive door hinge seat is particularly important.
2. Improvement of die stamping process
2.1 Improvement of material
In die stamping process, the material of the workpiece has a direct impact on the forming performance of the workpiece, such as stamping surface, burr, etc. In the production of automotive door hinge seat, the commonly used material is 0Cr19Ni10 stainless steel sheet. In order to improve the forming performance of the workpiece, the surface properties of the material are treated to further improve the surface quality of the parts.
2.2 Improvement of lubrication system
The effect of lubricant on the die stamping process is very significant. There are two kinds of lubricants used in die stamping process, namely liquid lubricant and paste lubricant. In order to ensure the surface quality of the workpiece during die stamping, the lubricant system needs to be improved. The quality of the lubricant should be checked regularly to ensure the lubricating effect of the lubricant.
2.3 Improvement of process parameters
The stamping process parameters (such as the selection of tooling material, the punch and die clearance, etc.) can also greatly affect the quality of the parts. The punch and die clearance should be selected according to the thick structure of the workpiece. The use of tooling materials such as carbides, etc. can also effectively improve forming quality.
3. Improvement of die design
3.1 Design of forming knife block
In die stamping process, in order to obtain the accurate shape, size and position tolerance of the parts, the forming knife block must to be designed reasonably. The commonly used basic forming knife block has a direct shear effect of the material, which leads to the reduction of the metal utilization rate and the increase of burrs and imprints on the parts surface. In order to improve the forming quality, the design of forming knife block should be improved. The forming knife block should be designed to have a rolling effect on the material, which can reduce the generation of burrs and stress, and improve the metal utilization rate.
3.2 Design of returning plate
In the stamping process of progressive die, when the parts are unloaded from the die, the returning plate should be designed reasonably to improve the automatic unloading efficiency and reduce the damage of parts, and the design of returning plate should be taken into account when designing the die.
4. Conclusion
Die stamping is an important manufacturing process for the production of automotive door hinge seat. The stamping process and die design should be optimized and improved to reduce the production cost and improve the economic benefits. In this paper, the improvement of die stamping process and die design of the automotive door hinge seat is discussed in detail. The surface of the material is treated to improve the forming performance of the workpiece, the lubricant system is improved to ensure the forming quality of the workpiece, and the forming knife block and returning plate are designed to improve the metal utilization rate and the automatic unloading efficiency.
