CN100383409C - Riveting method and device for metal plate - Google Patents
Riveting method and device for metal plate Download PDFInfo
- Publication number
- CN100383409C CN100383409C CNB2004100618123A CN200410061812A CN100383409C CN 100383409 C CN100383409 C CN 100383409C CN B2004100618123 A CNB2004100618123 A CN B2004100618123A CN 200410061812 A CN200410061812 A CN 200410061812A CN 100383409 C CN100383409 C CN 100383409C
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- sheet metal
- bump
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- depressed part
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Abstract
The present invention relates to a metal board riveting device and a riveting method, which is used for riveting a first metal board with a second metal board. The riveting device comprises a riveting press unit and a pressure bearing unit, wherein the riveting press unit is provided with a convex block and a contact surface. The riveting method comprises the following steps: a through hole is formed on the first metal board; a convex part is formed on one side of the second metal board, and a concave part is formed corresponding to the convex part on the other side of the second metal board; the first metal board covers the second metal board, and the through hole contains the convex part; the riveting press unit applies force to the convex part, and the pressure bearing unit bears the second metal board; the convex block extrudes the convex part to deform the convex part; the convex part of which the contact surface is deformed by extrusion enables the deformed convex part to engage the second metal board with the first metal board.
Description
Technical field
The present invention relates to a kind of sheet metal clinching method and riveting set, relate in particular to a kind of bump of second sheet metal distortion that utilizes first sheet metal and second sheet metal are riveted.
Background technique
General common sheet metal associated methods is to utilize screw or rivet to carry out combination.And the associated methods of screw and rivet all has processing time consuming and the very difficult problem of assembling.Have, all towards compact direction design, traditional riveted joint mode will make the volume of product effectively not dwindle to present various electronic goods, therefore influence competitiveness of product again.
Fig. 1 is a kind of known clinching method, it is that first sheet metal 120 and second sheet metal 140 is stacked, and directly utilize riveting unit 160 and pressure-bearing unit 180 extruding first sheet metal 120 and second sheet metals 140, and utilize the frictional force between first sheet metal 120 and second sheet metal 140 to make its riveted joint with groove.This known technology is more or less freely in operation, and need not use extra riveted joint element can finish riveted joint, though can solve the problem of the above-mentioned riveted joint of part, only produces the combination securely of unidirectional frictional force by sheet metal.When suffering external force, first sheet metal 120 is easy to separate once again with second sheet metal 140.
Fig. 2 is another kind of known clinching method, and it is superimposed with second sheet metal 240 with part projection to have first sheet metal 220 of through hole with one.Second sheet metal 240 utilizes riveting unit 260 and pressure-bearing unit 280 to press first sheet metal 220 and second sheet metal 240 again, and utilizes the bump of second sheet metal 240 and the frictional force that through-hole side wall produced of first sheet metal 220 to make its riveted joint.Though this known technology has improved the effect of riveted joint a little, yet when being subjected to external force, first sheet metal 220 still can separate once again with second sheet metal 240.In addition, because the thickness of second sheet metal 240, the minimum dimension of the through hole of first sheet metal 220 can be restricted.
Therefore, need a kind of easy to assembly and easy processing, and the clinching method of better intensity is provided, reduce the riveting portion minimum dimension simultaneously, to improve the space availability ratio of product specification.
Summary of the invention
One aspect of the present invention is to provide a kind of easy processing and assembles simple sheet metal riveting set and clinching method, to save manufacture cost.
The present invention is to provide a kind of sheet metal riveting set and clinching method on the other hand, and can closely rivet sheet metal, avoids sheet metal to separate once again.
Another aspect of the invention is to provide a kind of sheet metal riveting set and clinching method, and the bump that utilizes the distortion of second sheet metal is with first sheet metal and the riveted joint of second sheet metal.
In one embodiment, the invention provides a kind of sheet metal clinching method, be used for one first sheet metal and the riveted joint of one second sheet metal.This clinching method may further comprise the steps: at first form a through hole on first sheet metal.Mode with withdrawing (draw) forms a bump in a side of second sheet metal, and forms a depressed part of corresponding bump at the opposite side of second sheet metal.Increase bump in half die-cut mode again, and enlarge the internal diameter of depressed part.Cover second sheet metal with first sheet metal, and bump is contained in the through hole.Force in bump with a riveting unit, and with a pressure-bearing unit support second sheet metal.The riveting unit has a projecting block and a surface of contact, and pressure-bearing unit also comprises a damp block, is contained in the depressed part of second sheet metal.
Make bump produce distortion when the riveting unit forces in bump, damp block is the deformation direction that is used to limit bump.At last, the bump of surface of contact extrusion-deformation makes the bump of distortion engage first sheet metal with second sheet metal.
In another embodiment, the invention provides a kind of sheet metal riveting set, be used to rivet one first sheet metal and one second sheet metal.First sheet metal has a through hole.Second sheet metal has a bump in a side of second sheet metal, has a depressed part of corresponding bump at the opposite side of second sheet metal.This riveting set comprises a riveting unit and a pressure-bearing unit.The riveting unit has a projecting block and a surface of contact.Pressure-bearing unit is used for support second sheet metal, and pressure-bearing unit comprises a damp block, and is contained in the depressed part of second sheet metal.First sheet metal covers second sheet metal, and through-hole alignment and hold bump.
When riveting set operated, the riveting unit forced in bump, and the projecting block of riveting unit makes bump produce distortion, the deformation direction of the damp block restriction bump of pressure-bearing unit.The bump of the surface of contact extrusion-deformation of riveting unit makes the bump of distortion that second sheet metal is engaged first sheet metal.
Description of drawings
Fig. 1 shows a known riveted joint mode;
Fig. 2 shows another known riveted joint mode;
Fig. 3 display application is in first sheet metal of the specific embodiment of the invention;
Fig. 4 a to Fig. 4 d display application is in second sheet metal of the specific embodiment of the invention, and the mode of half die-cut withdrawing second sheet metal;
Fig. 5 a and Fig. 5 b show the riveted joint mode according to the specific embodiment of the invention;
Fig. 6 shows first sheet metal and second sheet metal according to specific embodiment of the invention riveted joint; With
Fig. 7 shows the riveting set according to another specific embodiment of the present invention.
Embodiment
The present invention discloses a kind of sheet metal clinching method, is used for one first sheet metal 320 and one second sheet metal 340 are riveted.At first with reference to Fig. 3, form a through hole 322 on first sheet metal 320, the diameter of this through hole is D1.Fig. 4 a to Fig. 4 d is shown as the step that forms bump 342 on second sheet metal 340.With reference to Fig. 4 a, use one first withdrawing unit 350 and one second withdrawing unit 352 to carry out half die-cut withdrawing program.The diameter of the first withdrawing unit 350 is D3, and it is D4 that a surface of contact 351 has diameter.The second withdrawing unit 352 has a through hole 354, and determining diameter is the zone of D2.Has a gap c between the first withdrawing unit 350 and the second withdrawing unit 352.When the first withdrawing unit 350 forces in second sheet metal 340, the second withdrawing unit 352 provides a reverse support force, cause the distortion of second sheet metal 340, side at second sheet metal 340 forms a bump 342, and on the opposite side of second sheet metal 340, cause a depressed part 344 with respect to bump 342, with reference to Fig. 4 b.When the first withdrawing unit 350 continues to produce half die-cut effect, shown in Fig. 4 c when second sheet metal 340 is exerted pressure.Half die-cut withdrawing mode makes that bump 342 is increased.And an internal diameter of depressed part 344 is enlarged to the diameter D3 of the first withdrawing unit 350.Second sheet metal 340 of finishing half die-cut withdrawing mode is shown in Fig. 4 d.Half die-cut withdrawing mode not only has the withdrawing effect of general withdrawing mode, also because its half die-cut effect, make the internal diameter of depressed part 344 can not be subjected to the influence of the thickness of second sheet metal 340, the carrying out that not only helps follow-up riveted joint program, also can dwindle size of component, meet the trend of product now.Must be noted that at this, when half die-cut withdrawing, need the size of control gap c and half die-cut distance h, to obtain preferable withdrawing effect.In the present embodiment, gap c be second sheet metal 340 thickness 1/3rd, and half die-cut distance h can not be greater than 1/2nd of the thickness of second sheet metal 340.The material of second sheet metal need be used the better and softer material of hardness of ductility, makes the program of withdrawing be easy to carry out and the situation of unlikely generation fracture.In the present embodiment, first sheet metal 320 adopts stainless steel, and thickness is about between the 0.2mm to 0.4mm, and second sheet metal 340 adopts aluminium, and thickness is about between the 0.3mm to 0.6mm.In addition, in the preferred embodiment of the present invention, the thickness of first sheet metal 320 is beneficial to the carrying out of follow-up riveted joint program less than the withdrawing distance H.
Fig. 5 a and Fig. 5 b show the riveted joint mode according to the embodiment of the invention.With reference to Fig. 5 a, cover second sheet metal 340 with first sheet metal 320, and through hole 322 holds bump 344.Force in bump 342, one pressure-bearing unit 380 supports second sheet metal 340 with a riveting unit 360.Riveting unit 360 has a projecting block 362 and a surface of contact 364, and this projecting block 362 has a plane 366.Pressure-bearing unit 380 has a damp block 382 and is contained in the depressed part 344 of second sheet metal 340.
With reference to Fig. 5 b, when riveting unit 360 forced in bump 342, plane 366 contacts and the extruding bump 342 of projecting block 362 made bump 342 produce distortion.In the present embodiment, the projecting block 362 of riveting unit 360 make the similar mushroom shape of distortion that the bump 342 of second sheet metal 340 produces to around open, and have the groove 348 of corresponding projecting block 362 and the bump 346 that is out of shape.Then the bump 346 of surface of contact 364 extrusion-deformations of riveting unit 360 makes the bump 346 of distortion engage first sheet metal 320 with second sheet metal 340.On the other hand, when riveting unit 360 pushes the bump 342 of second sheet metal 340, pressure-bearing unit 380 supports second sheet metal 340, the depressed part 344 of damp block 382 contacts second sheet metal 340, and a support force is provided, with the deformation direction of restriction bump 342.Must be noted that, the projecting block 362 of riveting unit 360 can not be higher than the withdrawing distance H, and it is the slightly larger in diameter of the outermost diameter of riveting unit 360 first withdrawing unit 350 when caing be compared to most half die-cut withdrawing, if but excessive then easily cause second sheet metal to produce unwanted distortion.
Fig. 6 shows first sheet metal 320 and second sheet metal 340 of being riveted according to clinching method embodiment of the present invention.Bump 342 produces the bump 346 of tongue 348 and distortion because of riveted joint.The bump 346 of distortion and second sheet metal 340 can be fixing with first sheet metal 320 securely.Clinching method according to the specific embodiment of the invention, except the frictional force of through hole 322 sidewalls of the bump 342 and first sheet metal 320, also can provide more effective means of fixation, to improve the problem of riveted joint poor effect in the known technology by the bump 346 of distortion.In addition, the present invention does not need to use extra riveted joint part, not only can save manufacture cost, goes back the simplified operation program.
Fig. 7 has shown another riveting set 700 according to the specific embodiment of the invention.Riveting set 700 comprises a riveting unit 360 and a pressure-bearing unit 380.In the present embodiment, riveting unit 360 is cylindric, but those skilled in the art will recognize that the riveting unit of other shape also can be applicable to the present invention, for example triangular prism, square column, polygonal post or other shape.Riveting unit 360 has a projecting block 362 and a surface of contact 364.In the present embodiment.The top of projecting block 362 is a plane 366, yet in other embodiment of the present invention.Projecting block also can be other shape, and is for example coniform or square etc.In the present embodiment, the base diameter of projecting block 362 is 1mm, and the diameter of top plan 366 is 0.7mm, and projecting height is 0.3mm, and the outermost circle diameter of riveting unit 360 is 2.5mm.
The internal diameter of the through hole 322 of first sheet metal 320 is 2.1mm, and the diameter of bump 342 is 2mm.During riveting set 700 runnings, as shown in Figure 7, second sheet metal is placed on the pressure-bearing unit 380, and the damp block 382 of pressure-bearing unit 380 is contained in the depressed part 344.First sheet metal 320 covers on second sheet metal 340, and through hole 322 holds bump 342.Must be noted that at this protrusion height of bump 342 is slightly larger than the thickness of (1mm at least) first sheet metal 320, make bump enough materials be arranged, to reach the purpose of riveted joint first sheet metal 320 to distortion all around.In addition, the diameter of riveting unit 360 needs greater than the about 5mm of the diameter of bump 342, reaching good riveted joint effect, but is noted that excessive riveting unit 360 also can cause unwanted sheet metal facial disfigurement phenomenon.
The process of riveting set 700 riveted joint first sheet metals 320 and second sheet metal 340 in preceding described (with reference to Fig. 5 a and Fig. 5 b), does not repeat them here, what must pay special attention to is, component size listed above is to be used to describe in detail structure of the present invention, so that can more understand the present invention.But above-mentioned component size is not to be used to limit the present invention, and any modification that size is made is included within the scope of the present invention.
The above embodiments are in order to description the present invention, but the present invention still can have many modifications and variation.Therefore, the present invention is not limited to the description of above specific embodiment, and claims of the present invention comprise all such modifications and variation, so that spirit according to the invention and scope.
Claims (11)
1. a sheet metal clinching method is used for one first sheet metal and one second sheet metal are riveted, and this method may further comprise the steps:
On first sheet metal, form a through hole;
On a side of second sheet metal, form a bump, and on the opposite side of second sheet metal, form a depressed part that should bump;
Cover second sheet metal with first sheet metal, and this through hole holds bump;
Force in bump with a riveting unit, a pressure-bearing unit support second sheet metal, this riveting unit has a projecting block and a surface of contact;
Push bump with projecting block, bump produces distortion; And
With the bump of surface of contact extrusion-deformation, make the bump of distortion engage first sheet metal with second sheet metal.
2. the method for claim 1, the formation step of wherein said bump also comprises:
Mode with withdrawing forms bump and depressed part; And
Increase bump in half die-cut mode, and enlarge an internal diameter of depressed part.
3. the method for claim 1, wherein said pressure-bearing unit also comprises a damp block, when the riveting unit forced in bump, this damp block was contained in the depressed part of second sheet metal, with the deformation direction of restriction bump.
4. the method for claim 1, the top of wherein said projecting block is a plane.
5. the method for claim 1, wherein said second sheet metal has higher ductility than first sheet metal.
6. sheet metal riveting set, be used to rivet one first sheet metal and one second sheet metal, this first sheet metal has a through hole, this second sheet metal has a bump in a side of second sheet metal, and have a depressed part that should bump at the opposite side of second sheet metal, this device comprises:
One riveting unit has a projecting block and a surface of contact; And
One pressure-bearing unit;
When wherein this riveting set operates, pressure-bearing unit support second sheet metal, first sheet metal covers second sheet metal, and through-hole alignment also holds bump, the riveting unit forces in bump, projecting block makes bump produce distortion, and the bump of surface of contact extrusion-deformation makes the bump of distortion engage first sheet metal with second sheet metal.
7. device as claimed in claim 6, wherein said pressure-bearing unit also comprises a damp block, is contained in the depressed part of second sheet metal, with the deformation direction of restriction bump.
8. device as claimed in claim 6, the top of wherein said projecting block are a plane.
9. device as claimed in claim 6, wherein said second sheet metal has higher ductility than first sheet metal.
10. device as claimed in claim 9, wherein said first sheet metal is made by stainless steel.
11. device as claimed in claim 9, wherein said second sheet metal is made of aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100618123A CN100383409C (en) | 2004-06-25 | 2004-06-25 | Riveting method and device for metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100618123A CN100383409C (en) | 2004-06-25 | 2004-06-25 | Riveting method and device for metal plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1712744A CN1712744A (en) | 2005-12-28 |
| CN100383409C true CN100383409C (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100618123A Expired - Fee Related CN100383409C (en) | 2004-06-25 | 2004-06-25 | Riveting method and device for metal plate |
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| CN (1) | CN100383409C (en) |
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| CN110374968A (en) * | 2018-04-12 | 2019-10-25 | 光宝电子(广州)有限公司 | Riveted construction and riveting method |
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| JP2019173989A (en) * | 2018-03-27 | 2019-10-10 | 株式会社ノーリツ | Gas supply manifold and manufacturing method thereof |
| CN111804825A (en) * | 2020-06-01 | 2020-10-23 | 江西江铃集团新能源汽车有限公司 | Riveting-head-free stamping device and method |
| FR3115718A1 (en) * | 2020-11-03 | 2022-05-06 | Vitesco Technologies | METHOD FOR POSITIONING AN ELEMENT IN RELATION TO A SHEET METAL AND CORRESPONDING DEVICE |
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| CN110374968A (en) * | 2018-04-12 | 2019-10-25 | 光宝电子(广州)有限公司 | Riveted construction and riveting method |
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| CN1712744A (en) | 2005-12-28 |
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