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Riveting method of ductile metal

A plasticity, metal technology, applied in the field of metal connection, can solve the problems of long processing cycle, expensive riveting punch and die, metal surface quality, surface coating damage, etc., to avoid oxidation corrosion, simple riveting method, good appearance quality Effect

Inactive Publication Date: 2019-07-12
JIANGSU BOJUN IND TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, the metal connection technology mainly includes welding, riveting, TOX connection and other processes. Welding is to use metal melting and cooling to connect together. The quality of the metal surface or the surface coating will be damaged, resulting in poor appearance quality, and the metal will be oxidized and corroded later. Risk; after riveting, the riveting point will leave a hole as large as the inner diameter of the turning hole, which will cause defects in product airtightness or signal shielding; after TOX connection is riveted, one side of the product surface will protrude, and sometimes it will be different from other parts. Part interference, riveting punches and dies are expensive, and the processing cycle is long, which is not suitable for the market demand of low cost and short delivery time

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  • Riveting method of ductile metal
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Embodiment Construction

[0017] In order to understand the technical content of the present invention more clearly, the following examples are given in detail, the purpose of which is only to better understand the content of the present invention but not to limit the protection scope of the present invention.

[0018] Such as figure 1 Shown, a kind of plastic metal riveting method comprises the following steps:

[0019] a) Punch at least one salad hole 11 at the pre-riveting point of the metal piece A1, the salad hole is composed of a flared part and a straight part;

[0020] b) At least one convex hull 21 is punched at the pre-riveting point of the metal piece B2, the convex hull corresponds to the salad holes one by one, and the shape and radial dimension of the convex hull are consistent with the shape and shape of the straight mouth part. The radial dimensions match, and the height of the convex hull is greater than the height of the salad hole;

[0021] c) inserting the convex shell from the st...

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Abstract

The invention discloses a riveting method of ductile metal. First of all, a countersink hole is formed in the riveting position of one product while the riveting position of another product is provided with a convex hull; then the countersink hole and the convex hull are assembled; force is applied to the convex hull, and by utilizing the ductility of metal, the head part of the convex hull expands until the two products are closely connected with each other. The riveting method is very easy, defects of various metal connection currently are eliminated and the riveting method is a novel connection technology of ductile metal. Compared with welding, the riveting method cannot damage metal surface quality or surface coating layers to cause worse appearance quality, at the same time, the riveting method can avoid the risk of metal oxidation corrosion in the future. Compared with rollover riveting, the riveting method cannot cause tightness of the product or signal shielding. Compared withTOX connection, one surface of the product cannot protrude after riveting, and interference with other parts can be avoided. Meanwhile, a riveting punch and a die are cheap, the processing period isshort, and the market needs of the low cost and short delivery time are met.

Description

technical field [0001] The invention relates to a metal connection method, in particular to a plastic metal riveting method. Background technique [0002] At present, metal connection technologies mainly include welding, riveting, TOX connection and other processes. Welding is to use metal melting and cooling to connect together. The quality of the metal surface or the surface coating will be damaged, resulting in poor appearance quality, and the metal will be oxidized and corroded later. Risks; after riveting, the riveting point will leave a hole as large as the inner diameter of the turning hole, which will cause defects in product airtightness or signal shielding; after TOX connection is riveted, one side of the product surface will protrude, and sometimes it will be different from other parts. Part interference, riveting punches and dies are expensive, and the processing cycle is long, which is not suitable for the market demand of low cost and short delivery time. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D39/00
CPCB21D39/00
Inventor 宋国民
Owner JIANGSU BOJUN IND TECH
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