CN107470483A - The flat no riveting joint forming device of direct sensing heating and technique of lightweight sheet material - Google Patents
The flat no riveting joint forming device of direct sensing heating and technique of lightweight sheet material Download PDFInfo
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- CN107470483A CN107470483A CN201710919950.8A CN201710919950A CN107470483A CN 107470483 A CN107470483 A CN 107470483A CN 201710919950 A CN201710919950 A CN 201710919950A CN 107470483 A CN107470483 A CN 107470483A
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- sheet material
- coil
- lower sheet
- drift
- support frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
- B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
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- Mechanical Engineering (AREA)
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Abstract
The flat no riveting joint forming device of direct sensing heating and technique of lightweight sheet material, before connection, support frame is fixed, upper and lower sheet material is overlayed into support frame upper surface, local heating is carried out to upper sheet material and lower sheet material by the alternating current inputted in first coil and the second coil with phase, when upper and lower sheet material temperature reaches the plastic deformation temperatures of material, disconnects alternating current, sheet material under the lower upward moving contact of mould, blank holder, which moves downward, pushes down sheet material and lower sheet material；Connection procedure starts, drift continues to move downward, and drift extrudes upper and lower sheet material, is plastically deformed upper and lower sheet material, the upper lower sheet material of sheet material insertion, a mechanical lock is formed between upper and lower sheet material, the connection in realization between sheet material, lower sheet material, after upper and lower sheet material is fully formed, drift and step blank holder move upwards, lower mould is moved downward, and upper and lower sheet material is taken out, and the present invention has the advantages that plastic force is small, tie point intensity is high, flexible and reliable in quality.
Description
Technical field
The invention belongs to sheet material interconnection technique field, and in particular to a kind of flat nothing of direct sensing heating of lightweight sheet material
Riveting joint forming device and technique.
Background technology
In recent years, a wide range of use with lightweight sheet material in the vehicles such as automobile, aircraft, suitable for connecting vapour
Car lightweight sheet material has obtained rapid development without riveting Joining Technology.Refer to the plastic deformation using sheet material without riveting Joining Technology
Ability, punching press is carried out to connected sheet material using special convex concave mould, make to embed the company realized between sheet material between sheet material
Connect.Compared with traditional sheet material connected mode, no riveting Joining Technology not only has very big in terms of economy, energy consumption, working environment
Advantage, and be highly suitable for heterogeneous material, there is coating on surface or the connection of the sheet material such as paint.Process of the technique in connection
In be not required to any auxiliary material such as rivet, be one of the important method for realizing the connection of the lightweight such as aluminium alloy sheet material, for automobile
Lightweight have great importance, but it is inevitably present following shortcoming again：It is quiet that formed tie point is connected without riveting
State intensity is relatively low；The side of tie point is projection, and opposite side is pit, has had a strong impact on the outward appearance of sheet material connection, at present automobile
One important indicator of sheet material connection is exactly its aesthetic measure, and without riveting connection due to raised and shrinkage pool be present, to a certain extent
Limiting the application of the technology, especially plate surface has the occasion of relative motion；Punch-pin and cavity plate of the tradition without riveting connection will
Strict centering is asked, once the intensity of tie point will be had a strong impact on by producing skew.
The shortcomings that in order to overcome above-mentioned tradition to be connected without riveting, there is scholar to propose flat no riveting Joining Technology, but the connection
Mode has the following disadvantages again：Adjustable parameter is few in traditional flat no riveting connection procedure, and controllability is poor；Tradition is flat
Flowed up without material in riveting connection procedure along punch-pin, punch-pin is big to its frictional resistance, easily forms the damage of internal material
Even crackle；The flowing of the flat no riveting connection of tradition is unidirectional backward extrusion mode, and resistance is big during flowing, is needed during shaping outer
Boundary's load is big, and shaping difficulty is big；
Sensing heating assistant metal plastic forming process, refers in conventional metals plastic forming process, using sensing whirlpool
The fuel factor of stream is heated, and sheet material is heated to certain temperature, with the technique mistake for improving forming quality, improving technological effect
Journey.Compared with conventional metals plastic forming process, sensing heating assistant metal plastic process have metal forming ability it is high,
It is easy to that control, precision are high, plastic force is small, metal material good fluidity, high quality, the entirety that sheet material can be achieved adds
Heat or local heating.
There is presently no find to connect sensing heating into the document report being combined with flat no riveting.
The content of the invention
The shortcomings that in order to overcome above-mentioned prior art, it is an object of the invention to provide a kind of direct sense of lightweight sheet material
Heated flat bottom is answered to effectively improve the intensity of tie point without riveting joint forming device and technique, reduce plastic force.
To achieve these goals, the technical solution adopted by the present invention is：
The flat no riveting joint forming device of direct sensing heating of lightweight sheet material, including fixed support frame 8, branch
The upper surface of support 8 is stacked with sheet material 3 and lower sheet material 4, mould 5 under being provided centrally with of support frame 8, the upper table of lower mould 5
Face is smooth, and the central shaft of lower mould 5 and the center overlapping of axles of support frame 8, the outside of support frame 8 is provided with first coil 6
With the second coil 7, the coil 7 of first coil 6 and second can move between the surface and side of lower mould 5, upper sheet material 3
Blank holder 2 is arranged above, the center of blank holder 2 is provided with drift 1, central shaft and blank holder 2 and the support of drift 1
The center overlapping of axles of frame 8.
The flat no riveting joint forming technique of direct sensing heating of lightweight sheet material, comprises the following steps：
Before connection starts, support frame 8 is fixed, and upper sheet material 3 and lower sheet material 4 overlay the upper surface of support frame 8, support
Mould 5 under being provided centrally with of frame 8, the upper surface of lower mould 5 is smooth, the central shaft of lower mould 5 and the center of support frame 8
Overlapping of axles, the coil 7 of first coil 6 and second are placed in the outside of support frame 8, and the coil 7 of first coil 6 and second is moved into lower mould
5 surface, the alternating current with phase is inputted in the coil 7 of first coil 6 and second, to upper sheet material 3 and the lower carry out of sheet material 4 office
Portion is heated, and when heated regional temperature reaches the plastic deformation temperatures of material, alternating current is disconnected, by the He of first coil 6
Second coil 7 removes, and sheet material 4 under lower 5 upward moving contact of mould, blank holder 2, which moves downward, pushes down sheet material 3 and lower sheet material 4,
The center of blank holder 2 is provided with drift 1, the central shaft of drift 1 and the center overlapping of axles of blank holder 2.Connection procedure starts, punching
First 1 moves downward, and sheet material 3 in contact, drift 1 continues to move downward, and the upper sheet material 3 of the extruding of drift 1 and lower sheet material 4, makes sheet material 3
Deformed with lower sheet material 4, blank holder 2 limits sheet material 3 and the material of lower sheet material 4 outwards flows, upper sheet material 3 and lower sheet material
4 material can only flow to the gap between drift 1 and blank holder 2, so that in the lower sheet material 4 of the insertion of upper sheet material 3, in upper sheet material
A mechanical lock is formed between 3 and lower sheet material 4, the connection in realization between sheet material 3 and lower sheet material 4, due to the upper table of lower mould 5
Face flat smooth, so the lower surface of lower sheet material 4 is smooth all the time, after upper sheet material 3 and lower sheet material 4 are fully formed, drift 1
Moved upwards with blank holder 2, lower mould 5 moves downward, and upper sheet material 3 and lower sheet material 4 is taken out, shaping terminates.
The position of described blank holder 2 and pressure-pad-force can be adjusted according to the forming quality for the tie point for being connected sheet material
Section.
Position, speed and the pressure of described drift 1 can be distinguished according to the forming quality for the tie point for being connected sheet material
It is adjusted.
The present invention has advantages below：Material flow resistance it is small, it is necessary to plastic force it is low, joint forming effect is good；Can have
Damage and crackle caused by effect prevention material internal；The auxiliary materials such as rivet are not needed；Flat no riveting connection need not be by upper and lower mould
Have centering, improve production efficiency；Coil-induced heating placement location is flexible, without directly being contacted with sheet material；Can connecting material
Combination is extensive, can connect the sheet material of heterogeneous material；Quality of connection is reliable, and the intensity of connection is high；The tie point surfacing of formation
It is smooth.
Brief description of the drawings
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is sheet material sensing heating schematic diagram.
Fig. 3 is the schematic diagram after present invention connection terminates.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
Referring to Figures 1 and 2, the flat no riveting joint forming device of the direct sensing heating of lightweight sheet material, including support frame
8, support frame 8 is fixed, and the upper surface of support frame 8 is stacked with sheet material 3 and lower sheet material 4, under being provided centrally with of support frame 8
Mould 5, the upper surface of lower mould 5 is smooth, the central shaft of lower mould 5 and the center overlapping of axles of support frame 8, lower mould 5
Upper surface is smooth, and the outside of support frame 8 is provided with the coil 7 of first coil 6 and second, in the coil 7 of first coil 6 and second
The alternating current of same phase can be inputted, the coil 7 of first coil 6 and second can move between the surface and side of lower mould 5,
Only moved into before flat no riveting connection and local heating is carried out to upper sheet material 3 and lower sheet material 4, flat no riveting connection procedure neutralizes it
The coil 7 of first coil 6 and second is removed afterwards, and upper sheet material 3 is arranged above blank holder 2, and blank holder 2 pushes down sheet material
3 and lower sheet material 4, the center of blank holder 2 is provided with drift 1, the center of the central shaft and blank holder 2 and support frame 8 of drift 1
Overlapping of axles.
The flat no riveting joint forming technique of direct sensing heating of lightweight sheet material, comprises the following steps：
Referring to Figures 1 and 2, before connection starts, support frame 8 is fixed, and upper sheet material 3 and lower sheet material 4 overlay support frame 8
Upper surface, mould 5 under being provided centrally with of support frame, the central shaft of lower mould 5 and the center overlapping of axles of support frame 8, first
The coil 7 of coil 6 and second is placed in the outside of support frame 8, and the coil 7 of first coil 6 and second is moved into the surface of lower mould 5,
The alternating current with phase is inputted in the coil 7 of first coil 6 and second, is produced in the coil 7 of first coil 6 and second perpendicular to upper
Sheet material 3 and the alternating flux on the lower surface of sheet material 4, sense surface of the caused vortex parallel to upper sheet material 3 and lower sheet material 4, and then
Local heating is carried out to upper sheet material 3 and lower sheet material 4, when heated regional temperature reaches the plastic deformation temperatures of material, broken
Alternating current is opened, the coil 7 of first coil 6 and second is removed, sheet material 4 under lower 5 upward moving contact of mould, blank holder 2 is downward
Sheet material 3 and lower sheet material 4 are pushed down in motion, and the center of blank holder 2 is provided with drift 1, central shaft and the blank holder 2 of drift 1
Center overlapping of axles.
Reference picture 3, connection procedure starts, and drift 1 moves downward, and sheet material 3 in contact, drift 1 continues to move downward, drift
The 1 upper sheet material 3 of extruding and lower sheet material 4, make sheet material 3 and lower sheet material 4 deform, blank holder 2 limits sheet material 3 and lower sheet material
4 material outwards flows, and the material of upper sheet material 3 and lower sheet material 4 can only flow to the gap between drift 1 and blank holder 2, so as to
Make in the lower sheet material 4 of the insertion of sheet material 3, one mechanical lock of formation between upper sheet material 3 and lower sheet material 4, sheet material 3 and lower plate in realization
Connection between material 4, due to the upper surface flat smooth of lower mould 5, so the lower surface of lower sheet material 4 is smooth all the time, on
After sheet material 3 and lower sheet material 4 are fully formed, drift 1 and blank holder 2 move upwards, and lower mould 5 moves downward, by the upper He of sheet material 3
Lower sheet material 4 takes out, and finishes.
Claims (4)
1. the flat no riveting joint forming device of the direct sensing heating of lightweight sheet material, it is characterised in that including fixed
Support frame (8), the upper surface of support frame (8) are stacked with sheet material (3) and lower sheet material (4), under being provided centrally with of support frame (8)
Mould (5), the upper surface of lower mould (5) is smooth, the central shaft of lower mould (5) and the center overlapping of axles of support frame (8), branch
First coil (6) and the second coil (7) are provided with the outside of support (8), first coil (6) and the second coil (7) can be under
Moved between the surface and side of mould (5), upper sheet material (3) is arranged above blank holder (2), in blank holder (2)
Heart position is provided with drift (1), the center overlapping of axles of the central shaft and blank holder (2) and support frame (8) of drift (1).
2. the flat no riveting joint forming technique of the direct sensing heating of lightweight sheet material, it is characterised in that comprise the following steps：
Before connection starts, support frame (8) is fixed, and upper sheet material (3) and lower sheet material (4) overlay the upper surface of support frame (8),
Mould (5) under being provided centrally with of support frame (8), the upper surface of lower mould (5) is smooth, the central shaft of lower mould (5) with
The center overlapping of axles of support frame (8), first coil (6) and the second coil (7) are placed in the outside of support frame (8), by first coil
(6) and the second coil (7) moves into the surface of lower mould (5), and input is the same as phase in first coil (6) and the second coil (7)
Alternating current, local heating is carried out to upper sheet material (3) and lower sheet material (4), when heated regional temperature reaches the plasticity of material
During deformation temperature, alternating current is disconnected, first coil (6) and the second coil (7) are removed, the upward moving contact of lower mould (5)
Lower sheet material (4), blank holder (2), which moves downward, pushes down sheet material (3) and lower sheet material (4), and the center of blank holder (2) is provided with punching
Head (1), the central shaft of drift (1) and the center overlapping of axles of blank holder (2)；
Connection procedure starts, and drift (1) moves downward, and sheet material (3) in contact, drift (1) continues to move downward, and drift (1) squeezes
Sheet material (3) and lower sheet material (4) in pressure, make sheet material (3) and lower sheet material (4) deform, blank holder (2) limits sheet material
(3) outwards flowed with the material of lower sheet material (4), the material of upper sheet material (3) and lower sheet material (4) can only be to drift (1) and blank holder
(2) the gap flowing between, so that in the embedded lower sheet material (4) of upper sheet material (3), the shape between upper sheet material (3) and lower sheet material (4)
Into a mechanical lock, the connection in realization between sheet material (3) and lower sheet material (4), due to the smooth light in upper surface of lower mould (5)
It is sliding, so the lower surface of lower sheet material (4) is smooth all the time, after upper sheet material (3) and lower sheet material (4) are fully formed, drift (1)
Moved upwards with blank holder (2), lower mould (5) is moved downward, and upper sheet material (3) and lower sheet material (4) are taken out, and shaping terminates.
3. the flat no riveting joint forming technique of the direct sensing heating of lightweight sheet material according to claim 2, its feature
It is, the position of described blank holder (2) and pressure-pad-force can be adjusted according to the forming quality for the tie point for being connected sheet material
Section.
4. the flat no riveting joint forming technique of the direct sensing heating of lightweight sheet material according to claim 2, its feature
It is, position, speed and the pressure of described drift (1) can be entered respectively according to the forming quality for the tie point for being connected sheet material
Row regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919950.8A CN107470483A (en) | 2017-09-30 | 2017-09-30 | The flat no riveting joint forming device of direct sensing heating and technique of lightweight sheet material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919950.8A CN107470483A (en) | 2017-09-30 | 2017-09-30 | The flat no riveting joint forming device of direct sensing heating and technique of lightweight sheet material |
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| Publication Number | Publication Date |
|---|---|
| CN107470483A true CN107470483A (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710919950.8A Pending CN107470483A (en) | 2017-09-30 | 2017-09-30 | The flat no riveting joint forming device of direct sensing heating and technique of lightweight sheet material |
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| CN (1) | CN107470483A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746377A (en) * | 2019-01-15 | 2019-05-14 | 同济大学 | Heat auxiliary hot melt self tapping blind riveting device and method |
| CN111229954A (en) * | 2019-11-20 | 2020-06-05 | 武汉科技大学 | Method for induction rolling composite connection of steel and aluminum dissimilar metals of automobile body |
| CN111659806A (en) * | 2020-06-12 | 2020-09-15 | 中南大学 | Triple lock catch type connecting device and method formed through hot stamping |
| CN111702087A (en) * | 2020-06-12 | 2020-09-25 | 中南大学 | Tabletting double-twist-lock type flat-bottom rivet-free plastic connecting device and method |
| CN113953386A (en) * | 2021-10-14 | 2022-01-21 | 陕西科技大学 | Method and device based on radial extrusion connection of end part of metal pipe and plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841944A (en) * | 2009-03-17 | 2010-09-22 | 岛田理化工业株式会社 | Induction heating equipment |
| CN102764822A (en) * | 2011-05-03 | 2012-11-07 | 通用汽车环球科技运作有限责任公司 | Clinching method and tool for performing the same |
| CN105689563A (en) * | 2016-03-01 | 2016-06-22 | 西安交通大学 | Flat-bottom riveting-free vibration connection forming device and technology of light board |
| CN105728627A (en) * | 2016-03-01 | 2016-07-06 | 西安交通大学 | Plate flat bottom riveting connection process for flip-in rivets with bulges at centers |
| CN105728575A (en) * | 2016-03-01 | 2016-07-06 | 西安交通大学 | Double-punch combination multi-degree-of-freedom flat bottom non-rivet plastic connection technology for light plate materials |
-
2017
- 2017-09-30 CN CN201710919950.8A patent/CN107470483A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841944A (en) * | 2009-03-17 | 2010-09-22 | 岛田理化工业株式会社 | Induction heating equipment |
| CN102764822A (en) * | 2011-05-03 | 2012-11-07 | 通用汽车环球科技运作有限责任公司 | Clinching method and tool for performing the same |
| CN105689563A (en) * | 2016-03-01 | 2016-06-22 | 西安交通大学 | Flat-bottom riveting-free vibration connection forming device and technology of light board |
| CN105728627A (en) * | 2016-03-01 | 2016-07-06 | 西安交通大学 | Plate flat bottom riveting connection process for flip-in rivets with bulges at centers |
| CN105728575A (en) * | 2016-03-01 | 2016-07-06 | 西安交通大学 | Double-punch combination multi-degree-of-freedom flat bottom non-rivet plastic connection technology for light plate materials |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746377A (en) * | 2019-01-15 | 2019-05-14 | 同济大学 | Heat auxiliary hot melt self tapping blind riveting device and method |
| CN111229954A (en) * | 2019-11-20 | 2020-06-05 | 武汉科技大学 | Method for induction rolling composite connection of steel and aluminum dissimilar metals of automobile body |
| CN111659806A (en) * | 2020-06-12 | 2020-09-15 | 中南大学 | Triple lock catch type connecting device and method formed through hot stamping |
| CN111702087A (en) * | 2020-06-12 | 2020-09-25 | 中南大学 | Tabletting double-twist-lock type flat-bottom rivet-free plastic connecting device and method |
| CN111659806B (en) * | 2020-06-12 | 2021-05-14 | 中南大学 | Triple lock catch type connecting device and method formed through hot stamping |
| CN111702087B (en) * | 2020-06-12 | 2021-06-08 | 中南大学 | Tabletting double-twist-lock type flat-bottom rivet-free plastic connecting device and method |
| CN113953386A (en) * | 2021-10-14 | 2022-01-21 | 陕西科技大学 | Method and device based on radial extrusion connection of end part of metal pipe and plate |
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Application publication date: 20171215 |
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