CN202510472U

CN202510472U - Rivet-free riveted structure of metal plate

Info

Publication number: CN202510472U
Application number: CN2012200700772U
Authority: CN
Inventors: 郭科文
Original assignee: Incote (ningbo) Mechancial & Electronic Equipment Co ltd
Current assignee: Ningbo Inctel Precision Work Machinery Co., Ltd.
Priority date: 2012-02-29
Filing date: 2012-02-29
Publication date: 2012-10-31
Anticipated expiration: 2022-02-28

Abstract

The utility model relates to a rivet-free riveted structure of a metal plate. The rivet-free riveted structure of the metal plate consists of an upper plate and a bottom plate. A plurality of same equilateral polygonal holes are machined in the upper plate, wherein the number of sides of the polygon is greater than or equal to 3. A plurality of circular bumps are machined on the bottom plate. The number of the bumps is identical to that of the holes in the upper plate and the bumps are consistently distributed with the holes. The outer diameter of the cross sections of the bumps is matched with the diameter of the incircles of the equilateral polygonal holes in the upper plate. The bumps on the bottom plate are pressed into the holes of the upper plate, and extended parts are arranged at the top of the bumps corresponding to the edges of the holes in the upper plate.

Description

Panel beating does not have the rivet structure

Technical field

The utility model relates to the sheetmetal working field, is meant that especially a kind of panel beating does not have the rivet structure.

Background technique

In fields such as current automobile making, instrument and apparatus and communications, sheet metal structural is the Placement commonly used in these fields.Described sheet metal structural be a kind of with two sheet metals through welding or mechanical stamping after the operating type that links together.Sheet metal structural mainly contains three kinds of processing modes at present:

A kind of is the welding processing mode, and the advantage of this mode is not need large-scale machinery, the mode of production and batch flexibly.But this processing mode has following shortcoming: 1, receive the restriction of welding personnel technical merit, and because of the technology inequality of welding personnel, cause the quality heterogeneity of sheet metal structural, or reject rate is high.2, receive the thickness effect of sheet metal during welding, the sheet metal structural in existing automobile making, instrument and apparatus and the communications field or other field generally is to adopt light sheet, promptly generally below 4mm, and adopts the situation that can occur when being welded to connect welding leakage to take place.

A kind of is the rivet processing mode, and the advantage of this processing mode is that production process is simple, does not receive the influence of operator and equipment, and the production of suitable small batch.But the shortcoming of this processing mode is the existence because of rivet, causes on the panel beating surface and has tangible rivet arrangement protrusion, influences the outward appearance of sheet metal structural.

Another kind is no rivet processing mode; This processing mode at first stamps out the hole of certain specification on a plate; Through stamping out a convex shape, hole and protruding profile are identical and can work in coordination on another plate, convexity are pressed in the hole of another plate; Use punching equipment punching press projection then, realize riveted joint.This riveted joint processing mode have preceding two kinds of sheetmetal workings incomparable advantage.But in this riveted joint processing; Following defective is also arranged; And can not reach the best-of-breed technology effect: the convexity after the riveted joint is still obvious; And also clearly, and, have influence on working life of panel beating when receiving certain external force because the riveted joint position of this mode can occur relative looseningly in the indenture of the another side of riveted joint place.And in the no rivet processing of existing technology, adopt the riveted joint processing mode of circular port to account for whole more than 95% of no rivet processing.

Therefore, how improving the surface smoothness to no rivet processed product, reduce to rivet to be in to receive and can occur looseningly relatively under the external force effect, and then have influence on life-span of sheet metal structural, is related domain technical issues that need to address.

The model utility content

The purpose of the utility model is to improve the surface smoothness of no rivet product, reduces riveted joint and is in to receive and can occurs looseningly relatively under the external force effect, and be the main purpose of the utility model the working life of raising sheet metal structural.

The utility model is realized through following technological scheme:

Panel beating does not have the rivet structure, includes upper plate and base plate and forms, and is processed with some identical equilateral polygon holes at said upper plate, said polygonal limit number >=3; Be processed with some circular protrusions on the said base plate, the number of said convexity is identical with the hole count of upper plate, and it is consistent to distribute, and the outside diameter of the cross section of said convexity matches with the inscribed circle diameter in the equilateral polygon hole on the upper plate; Convexity on the said base plate is pressed in the plate hole, and there is an extension at the corresponding upper plate bore edges of convex top place.

As further improvement, the limit number of described equilateral polygon is between 12-16.

The beneficial effect of the utility model is:

Technological scheme through the utility model; When using mould to carry out the top of expression lobes; Plastic deformation can take place to match with the hole on the upper plate in this convexity under the effect of power, so just make the combination of two plates very tight, and the possibility of relative movement reduces; And because in extrusion process, convexity modification behind pressurized is replenished to hole and protruding gap, and protruding relative reduction that makes riveted joint place makes the outward appearance of riveted joint place more smooth.

Description of drawings

Fig. 1, the utility model riveted joint schematic representation;

Fig. 2, the enlarged diagram of plate hole on the utility model;

Fig. 3, the utility model riveted joint process schematic representation;

Fig. 4, schematic representation after the utility model riveted joint is accomplished.

1, upper plate 2, last plate hole 3, base plate

4, convexity 5, caulking part 6,7, extrusion die

Embodiment

The embodiment of following DETAILED DESCRIPTION The present application; Said embodiment's example is shown in the drawings; Wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions; Be exemplary through the embodiment who is described with reference to the drawings below, only be used to explain the application, and can not be interpreted as restriction the application.

The utility model is implemented in the following manner:

With reference to Fig. 1-4; At first select two sheet metals, the thickness of sheet metal can certainly be suitable for surpassing between the sheet metal of 4mm being advisable below the 4mm in the utility model; But had better not surpass 5mm, because be unsuitable above the connection with no rivet form between the sheet metal of this thickness.Can certainly be that same block of sheet material passes through the suitable crooked connection on both sides afterwards in sheet metal structural, represent with two boards also that here this two class formation all is applicable to the application.

Bore upward plate hole 2 with drilling tool on the upper plate 1 at first therein, needed hole count is decided according to actual conditions, and drilling tool is an existing technology.Only on drill bit, change cross section into drill bit that cross section is an equilateral polygon for round drill bit, other situation is identical with existing technology.Polygonal limit number >=3 that in the present technique scheme, proposed, but in practical application, be advisable at 12-16 with the limit number, be that this patent can reach optimum efficiency with 12 limits again wherein.

It is identical on sole piece 3, to adopt mould to extrude the same plate hole number with existing technology; Consistent convexity 4 distributes; The inscribed circle diameter of the same plate hole of cross section outside diameter of described convexity is complementary, and then the convexity on the base plate is pressed into matching going up in the plate hole through machinery, is pressed into the back convex top and exceeds upper plate; And then with extrusion die (6,7) up and down expression lobes make and protruding form certain extension at the upper plate upper surface and form caulking part 5 and accomplish riveted joint processing.

The above only is the preferred implementation of the utility model; Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the application's principle; Can also make some improvement and retouching, improve and retouch the protection domain that also should be regarded as the application like this.

Claims

1. panel beating does not have the rivet structure, includes upper plate and base plate and forms, and it is characterized in that: be processed with some identical equilateral polygon holes at said upper plate, said polygonal limit number >=3; Be processed with some circular protrusions on the said base plate, the quantity of said convexity is identical with the hole count of upper plate, and it is consistent to distribute, and the outside diameter of the cross section of said convexity matches with the inscribed circle diameter in the equilateral polygon hole on the upper plate; Convexity on the base plate is pressed in the board pore, and there is an extension at the corresponding upper plate bore edges of convex top place.

2. panel beating according to claim 1 does not have the rivet structure, it is characterized in that: the limit number of described equilateral polygon is between 12-16.

3. panel beating according to claim 1 and 2 does not have the rivet structure, it is characterized in that: the limit number of described equilateral polygon is 12.