Automotive Hood Inner Panel Stamping Die

SIKAIDA Automotive Hood Inner Panel Stamping Die is a large and complex stamping system specifically designed for forming the main framework of the hood inner panel. It is not a single die, but a complete piece of equipment encompassing multiple processes, ensuring the stable forming of large, high-precision body components.

Core Product Features:

1. Large Size and Complex Structure

The standard dimensions of the Automotive Hood Inner Panel Stamping Die are >800mm in length and >600mm in width, requiring the forming of reinforcing ribs, mounting holes, and other features. It includes core components such as upper and lower dies, as well as a precision guiding, positioning, and unloading system to ensure stable and accurate stamping.

2. Ultra-High Precision and High Quality

Stamped parts have dimensional tolerances controlled within ±0.1mm, free from defects such as cracks, wrinkles, and scratches. The die itself undergoes stringent manufacturing, guiding precision, and pressure distribution control, matching the quality standards of related appearance components.

3. Advanced Integrated Molding Process

Integrating multiple processes such as deep drawing and forming achieves one-time molding, precisely controlling material flow and springback compensation. CAE simulation is used to predict problems, ensuring stable and reliable stamping.

4. Heavy-Duty Die System

The Automotive Hood Inner Panel Stamping Die weighs tens of tons and requires large-scale pressure equipment of over 2000 tons. It is equipped with high-precision guide pillars, guide sleeves, and other components, suitable for long-term, high-intensity mass production.

5. High-Quality Surface Treatment

The mold surface is mirror-polished (Ra≤0.4μm). Surface hardness and coating parameters are optimized for different materials to ensure wear resistance and stable surface quality.

Manufacturing Process

1. Product Analysis and Process Design

Automotive Hood Inner Panel Stamping Die uses CAE software such as AutoForm and Dynaform to analyze stamping formability, predict defects, optimize processes, and determine reasonable stamping parameters, laying the foundation for manufacturing.

2. Mold Design

Full 3D design is performed using UG and CATIA to refine the structure of each component, ensuring that the mold's strength, rigidity, and precision meet production requirements.

3. Material Selection

The Automotive Hood Inner Panel Stamping Die body is made of 45 steel and 42CrMo, while the profiles and key parts use tool steel such as Cr12MoV (HRC48-52 after heat treatment). Wear-resistant steel is used for the guide pillars and bushings.

5. Precision Machining

Rough machining and high-speed CNC precision machining (surface accuracy ±0.01mm), combined with wire cutting, EDM, and other special machining processes, as well as heat treatment and surface treatment, ensure mold performance meets standards.

6. Assembly and T0 Trial Molding

After assembly, the mold is tested on a press. Parameters are repeatedly adjusted, samples are inspected, and the mold is modified and optimized until all product indicators meet the standards.

Product Application

SIKAIDA Automotive Hood Inner Panel Stamping Die is widely used in the manufacturing of hood inner panels for passenger cars and commercial vehicles, efficiently forming complex curved surface parts and supporting the efficient and stable operation of automakers' body production lines.

Development Trends:

1. Ultra-Large Integrated Molding

 The trend towards integrated hood inner panels increases the requirements for mold tonnage and size. The widespread use of presses with capacities of 2000 tons and above increases design and manufacturing complexity.

2. Lightweight Material Adaptation

The expansion of high-strength steel and aluminum alloy applications necessitates adjustments to mold design parameters, posing new challenges to manufacturing technology.

3. Intelligent Manufacturing and Digitalization

Leveraging CAE simulation, CNC machine tools, and digital twin technologies, we achieve full lifecycle digital management of molds, improving precision and efficiency.

4. Rapid Mold Changeover and Automated Production

We optimize the rapid positioning and locking functions of molds, integrating them with automated production lines to meet the needs of multi-variety, small-batch production.

The SIKAIDA Automotive Hood Inner Panel Stamping Die integrates technologies from multiple fields, representing the advanced level of stamping dies. With a development cycle of 8-15 months and high costs, it is a significant benchmark of corporate strength. It will continue to upgrade along with the lightweighting and intelligent development of the automotive industry, providing support for the high-quality development of the global automotive industry.