CN208527976U - The thin material connection flanging bore semi-finished product structure of metal plate - Google Patents
The thin material connection flanging bore semi-finished product structure of metal plate Download PDFInfo
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- CN208527976U CN208527976U CN201820712484.6U CN201820712484U CN208527976U CN 208527976 U CN208527976 U CN 208527976U CN 201820712484 U CN201820712484 U CN 201820712484U CN 208527976 U CN208527976 U CN 208527976U
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- metal plate
- flanging bore
- convex closure
- finished product
- utility
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Abstract
The utility model relates to a kind of thin material connection flanging bore semi-finished product structures of metal plate.The utility model includes Metal plate, is extended molding by one or more steps, forms convex closure structure in Metal plate.Convex closure structure in Metal plate is truncated cone, and is miner diameter end at the top of convex closure.Internal diameter, outer diameter at the top of convex closure are adapted with the dimensions of flanging bore.The flanging bore processed by the semi-finished product can solve the problem of easy stripped thread occurred is thinned due to Metal plate, be particularly suitable for the flange hole machined as thickness≤0.7mm of Metal plate.
Description
Technical field
The utility model relates to a kind of thin material connection flanging bore semi-finished product structure of metal plate, belong to Metal plate connection with turning over
Lateral opening processing technique field.
Background technique
Sheet metal component is widely used in field of household appliances because there is the characteristics such as good moulded manufacturability, high intensity.Existing industry
In, to reduce cost, using thin plate material during, usually there is molding on the sheet metal component for connecting with other parts turn over
It is lateral opening.Flange hole forming method in the prior art is usually, first in the position of the preforming flanging bore of Metal plate, punch forming
Then one aperture is usually first punched always by taking the processing of the flanging bore of M4 as an example in the punching position punch forming flanging bore again
Diameter is the aperture of 1.6mm or so, then punch forming flanging bore.Using the processing method, a part will cause in punching operation
Material loss；And material of the Metal plate in deformation range is flow to by forming convax mould from horizontal plane in the processing method
Vertical plane forms cylindric flanging bore, because of limited material in deformation range, molding flanging bore side wall is all thinning molding
, usual flanging bore sidewall thickness becomes thick 0.65~0.75 times of former metal plate material, thus the flanging bore that the processing method is formed
Wall thickness is relatively thin, as shown in Figure 1.When the material of Metal plate is thick relatively thin, because strength reduction is obvious after metal plate material thickness is thinned, from
It attacks screw and is very easy to stripped thread, greatly reduce the reliability of product.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of metal plate thin material connection flanging bore semi-finished product knots
Structure, the flanging bore processed by the semi-finished product can solve above-mentioned since asking for the easy stripped thread occurred is thinned in Metal plate
Topic.
To solve above-mentioned technical problem the technical scheme adopted by the utility model is metal plate thin material connection flanging bore half
Finished product structure, including Metal plate are extended molding by one or more steps, form convex closure structure in Metal plate.
It further, the convex closure structure in Metal plate is truncated cone, and is miner diameter end at the top of convex closure.
Further, the internal diameter, outer diameter at the top of convex closure are adapted with the dimensions of flanging bore.
The utility model is particularly suitable for the flange hole machined as thickness≤0.7mm of Metal plate.
When material connection flanging bore thin using the utility model processing metal plate, include the following steps:
A, it in the position of the preforming flanging bore of Metal plate, is extended molding by one or more steps, the shape in Metal plate
At convex closure structure；
B, at the convex closure structure in Metal plate, by cold-heading molding, flanging bore is obtained.
The beneficial effects of the utility model are: firstly, not will cause material in process using molding mode of extending
Loss；Secondly, Metal plate in larger scope is flow to the range of preforming flanging bore using molding mode of extending
It is interior；Finally by the way of cold-heading molding, the Metal plate of inflow is shaped to flanging bore, reaches the material thickness rate of flanging bore side wall
The purpose that sheet metal component regular burden(ing) thickness thickeies.To first is that the thickness of flange hole wall is increased, second is that the metal plate material of wall portion passes through
Cold-heading meeting flow harden is crossed, these two aspects all can effectively enhance the intensity of flanging bore, effectively reduce and bring since sheet metal component is thinned
Connection tapping screw stripped thread risk.
Detailed description of the invention
Fig. 1 is the structural schematic diagram after flanging hole forming in the prior art；
Fig. 2 is the flanging bore semi-finished product structure schematic diagram in the utility model；
Fig. 3 is the structural schematic diagram after the flanging hole forming in the utility model；
Fig. 4 is the material deformation range contrast schematic diagram of the utility model and the prior art；
Marked in the figure: 1- Metal plate, 2- convex closure, 3- flanging bore.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
As shown in Fig. 2, the utility model includes Metal plate 1, extended molding by one or more steps, in Metal plate 1
Upper 2 structure of formation convex closure.2 structure of convex closure in Metal plate 1 is truncated cone, and is miner diameter end at the top of convex closure 2.Convex closure 2
Internal diameter, the outer diameter at top are adapted with the dimensions of flanging bore 3.The utility model is particularly suitable for the thickness when Metal plate
Flange hole machined when≤0.7mm.
When material connection flanging bore thin using the utility model processing metal plate, include the following steps:
A, it in the position of the preforming flanging bore 3 of Metal plate 1, is extended molding by one or more steps, in Metal plate 1
Form 2 structure of convex closure；Obtained flanging bore semi-finished product structure is as shown in Figure 2；
B, at 2 structure of convex closure in Metal plate 1, by cold-heading molding, flanging bore 3 is obtained.
Structure after the utility model flanging hole forming as shown in figure 3, with flanging bore in the prior art shown in FIG. 1 at
Structure after type compares it is found that the utility model is using molding mode of extending, Metal plate stream in larger scope
In the range of moving preforming flanging bore 3；Finally by the way of cold-heading molding, the Metal plate of inflow is shaped to flanging bore
3, achieve the purpose that the material thickness rate sheet metal component regular burden(ing) thickness of 3 side wall of flanging bore thickeies.
For convenience of product material flowing forming, 2 structure of convex closure in Metal plate 1 is truncated cone, and at the top of convex closure 2
For miner diameter end；Internal diameter, the outer diameter at 2 top of convex closure are adapted with the dimensions of flanging bore 3.Using which, may make simultaneously
Metal plate in larger scope is flow in the range of preforming flanging bore 3, and the effective material for increasing by 3 side wall of flanging bore is thick
Degree.
By taking the screw of M4 is applied in air conditioner industry as an example, when processing flanging bore 3, according to processing in the prior art
Mode is implemented, then it is generally necessary to which the material thickness of Metal plate 1 could make connection pore structure more reliable in 0.8mm or more.And it adopts
When being implemented with the utility model, even if material is thick to only have 0.6mm, it also may make the connecting hole structural reliability obtained after processing, reach
To reliability of the material thickness in the prior art in 0.8mm.
The material deformation range situation of the utility model and the prior art is as shown in figure 4, Da is the change of material in the prior art
The diameter of shape range, usual Da=d+0.2 × 2mm, d are the outer diameter of flanging bore 3.When being implemented using the prior art, for M4's
The internal diameter D of screw, flanging bore 3 is often 3.3mm, when expecting thickness is 0.8mm, d=4.34mm, deformed region diameter Da=
4.74mm；When expecting thickness is 0.6mm, d=4.08mm, deformed region diameter Da=4.48mm；Using formula V=∏ × r2×T
Deformation region material volume V is 11.83m when material thickness 0.8mm can be calculated3, it is material that wherein ∏, which is 3.14, r=Da/2, T,
Thickness.
When being implemented using the utility model, the material deformation range diameter after increase is labeled as Dc, and intermediate deformation range is straight
Diameter is labeled as Db, it is assumed that diameter is that the material within the scope of Db need to flow into the normal deformation regional scope that diameter is Da, then can push away
Export,
And the plane within the scope of Dc-Db, expect that thick meeting is suitably thinned, to supplement the material flowed into Da within the scope of Db-Da, at this
In embodiment, if being thinned to 0.5mm, Dc=5.56mm from 0.6mm by this region material thickness, here it is the final materials after increase
Deformation range.
From above-mentioned analysis it is found that if the material thickness of Metal plate 0.8mm is thinned to 0.6mm, in order to reach with 0.8mm thickness material at
The reliability of the fixed tapping screw of the flanging bore of type is similar, can be by the way that deformed region diameter is expanded to from normal 4.48mm
5.56mm can reach after Metal plate 1 is thinned, the fixed reliability of screw then in a manner described using extending and cold-heading process
It is not deteriorated.
Claims (1)
1. metal plate thin material connection flanging bore semi-finished product structure, including Metal plate, it is characterised in that: drawn by one or more steps
It is stretched into type, forms convex closure structure in Metal plate；Convex closure structure in Metal plate is truncated cone, and is at the top of convex closure
Miner diameter end；Internal diameter, outer diameter at the top of convex closure are adapted with the dimensions of flanging bore；Thickness≤0.7mm of Metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712484.6U CN208527976U (en) | 2018-05-14 | 2018-05-14 | The thin material connection flanging bore semi-finished product structure of metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712484.6U CN208527976U (en) | 2018-05-14 | 2018-05-14 | The thin material connection flanging bore semi-finished product structure of metal plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208527976U true CN208527976U (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820712484.6U Active CN208527976U (en) | 2018-05-14 | 2018-05-14 | The thin material connection flanging bore semi-finished product structure of metal plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405774A (en) * | 2018-05-14 | 2018-08-17 | 四川长虹空调有限公司 | Metal plate thin material connection flange hole forming method and flanging bore semi-finished product structure |
-
2018
- 2018-05-14 CN CN201820712484.6U patent/CN208527976U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405774A (en) * | 2018-05-14 | 2018-08-17 | 四川长虹空调有限公司 | Metal plate thin material connection flange hole forming method and flanging bore semi-finished product structure |
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