Device and method for obtaining high bright and clean punching face and contact head product

Abstract

The invention provides a device and method for obtaining a high bright and clean punching face and a contact head product. The device comprises a punching device and a bright and clean device. The punching device comprises a base and a moving part. The moving part is movably arranged on the base through a first guide rail. The bright and clean device is connected with the base. The bright and clean device comprises a forming part provided with a bright and clean face, a tool fixture used for clamping the forming part in an arranging mode and a workpiece fixture used for clamping a product punching material in an arranging mode. The moving part is connected with the tool fixture through a coupling mechanism to drive the bright and clean face of the forming part to be connected and squeezed with a processing face of the product punching material in an abutted mode. The method comprises that the bright and clean face of the forming part is driven to be connected and squeezed with the processing face of the product punching material in an abutted mode to form the high bright and clean punching face a with smooth surface. The contact head product is provided with the high bright and clean punching face which is processed by the above method. According to the method and the device, the production efficiency can be greatly improved, meanwhile a high-density structural layer is formed on the surface layer of the high bright and clean punching face, and the capacity of abrasion-resistance and anti-arc damage of a contact head is effectively enhanced.

Description

technical field [0001] The invention relates to the technical field of stamping processing, in particular to a device and method for obtaining a smooth stamping surface, and a contact product manufactured by the device and method. Background technique [0002] In electrical products, a key part called contact is widely used, especially in circuit breaker products. It is usually made of T2-Y pure copper and formed by stamping process. Because it plays Contact, conduction, and breaking functions, so the requirements for the finish of the electrical contact surface are very high (usually the finish is not lower than Ra1.6), so as to ensure the close contact between the electrical contact surfaces, reduce the air gap, and reduce the The occurrence of arcing phenomenon. However, the existing stamping process is mostly used for stamping forming, which obtains the shape of the workpiece through the principle of stamping or blanking. Whether it is stamping or blanking, since they ...

AI Technical Summary

Problems solved by technology

Whether it is stamping or blanking, since they will inevitably produce a large deformation of the punching fracture surface and / or workpiece material (otherwise the required workpiece shape cannot be formed), the surface finish of the shape obtained is very low

The contact workpiece processed by stamping forming process is no exception, and the smoothness of the blanking surface cannot meet the requirements of large current-carrying and high-breaking electrical contact performance of circuit breakers.

In order to make the smoothness of the blanking surface used for electrical contact meet the requirements of the contact, the traditional method is to use manual polishing or other mechanical processing, but these methods have low production efficiency, high processing costs, unstable product quality, and high energy consumption. Or dust pollution and other issues, can not meet the requirements of sustainable, large-scale production

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