In-Depth Analysis of Sheet Metal Design Processes

Date:2025-01-15 10:09
Sheet metal design is an indispensable part of the modern manufacturing industry, widely used in various fields such as electronics, automotive, and aviation. This article will provide a detailed introduction to several common sheet metal processes to help readers better understand the technical details of this field.
Sheet Metal Riveting
Riveting is a common fastening technique that can be used to rivet both studs and screws, which are used to secure circuit boards or plastic components. Screws can also be used for grounding. To ensure the strength and reliability of the riveting process, the sheet metal thickness is generally required to be at least 0.8mm.
Bending is the most universal forming process in sheet metal design. In the design phase, attention should be paid to the notches on both sides, which are process slots that prevent the product from twisting and deforming during processing. The width of the process slot should be at least twice the thickness of the wall.
Flanging Process
The flanging process is often used in products that require lightweight and structural strength. If there are too many internal wiring circuits in the product, flanging can also serve to protect the circuits from scratches. The width of the flanged edge should be three times the wall thickness, and there should also be process slots on both sides.
Bridge Process
The bridge process usually requires small molds and is directly stretched into shape. The width of the punch should be above 2.0mm, the wider the better, and the smaller the angle of the bridge surface, the better, so that it is not easy to tear the product during stretching. This structure can be used for card slots, supports, wiring, etc.
Chamfered Holes
Chamfered holes are essentially holes with a beveled edge, forming a countersunk hole, which can be formed directly on the sheet metal or machined later. This process requires a certain thickness of sheet metal, preferably above 0.8mm, and is commonly used for the installation and fixing of countersunk screws, ensuring the flatness and neatness of the product appearance.
Hole Flanging and Tapping
The function of hole flanging and tapping is similar to that of riveting studs, but it does not require additional studs to be pressed onto the sheet metal; instead, it is formed directly on the sheet metal. It is generally used for wall thicknesses between 0.8-2mm, and for sheets thicker than 2mm, it is also possible to tap directly without flanging. The diameter of the round hole should not be less than twice the wall thickness, and the height of the flange should be between 1 to 2 times the wall thickness.
Boss Forming
Boss forming also requires mold opening to achieve, and the height of the stretched forming depends on the area and the width of the slope. Bosses can be used as screw hole surfaces, support bodies, to prevent deformation of large flat panels, and can also serve as appearance surfaces to increase the three-dimensional sense of the product.
Punching Letters
The width of the font for punching letters is determined by the strength of the mold and the wall thickness. It is commonly used for logo engraving.
Conclusion
Sheet metal processes are an important part of the manufacturing industry. Through the above common sheet metal processes, we can see the importance of sheet metal design in achieving product functionality and aesthetics. With the continuous advancement of technology, sheet metal processes are also constantly developing and innovating, providing strong support for the development of modern manufacturing.
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