Deep drawing, flanging, bulging: How to form complex metal stamping parts in one step?

1. Composite mold design

The composite mold integrates deep drawing, flanging, bulging and other processes into the same station through structural innovation, so as to realize the one-time stamping forming of complex metal stamping parts. The convex and concave molds have the functions of deep drawing convex molds and flanging concave molds, and the side wall flanging is directly performed after deep drawing. The hydraulic bulging unit is embedded in the convex and concave molds. After deep drawing, the workpiece is partially bulged (such as raised reinforcement ribs) by high-pressure liquid or elastomer.

Dynamic pressing system——

Segmented pressing plate: Differentiated pressing force is applied to different areas of the product, high pressure prevents wrinkles during deep drawing, and low pressure reduces friction during flanging.

Intelligent spring group: The pressing plate spring and the ejector spring cooperate to control the material flow to avoid local excessive thinning.

2. High-frequency induction heating

For materials that are not easy to deform (such as high-strength steel and stainless steel), local temperature control technology is the key breakthrough point. The annular temperature field can quickly heat the edge of the stamping material (heating to 300°C within 3 seconds), reduce deformation resistance, and maintain the strength of the center area to support deep drawing. The temperature gradient control does not heat the short side and heats the long side to avoid asymmetric deformation during deep drawing of elliptical parts. Synchronous continuous stamping matches the heating and stamping beats (3-6spm) to achieve full-automatic production line integration.

3. Typical application scenarios