CN104815912A - Method of bonding and embossing device - Google Patents
Method of bonding and embossing device Download PDFInfo
- Publication number
- CN104815912A CN104815912A CN201510161645.8A CN201510161645A CN104815912A CN 104815912 A CN104815912 A CN 104815912A CN 201510161645 A CN201510161645 A CN 201510161645A CN 104815912 A CN104815912 A CN 104815912A
- Authority
- CN
- China
- Prior art keywords
- inner panel
- undercut
- outside plate
- flange
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- B21D39/02—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 by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/021—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 by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
- B21D39/023—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 by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors using rollers
-
- 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
- B21D39/02—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 by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/026—Reinforcing the connection by locally deforming
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Abstract
The invention relates to a method of joining an inner steel panel (14, 14a) with an outer soft metal sheet (16) by means of a folding flange (12). It is envisaged that stamping is performed after the outer folding panel (16) in the area of a folding roll (20) of the folding flange (12), such that the outer panel (16) is prevented from sliding along the direction (Y) of the inner panel (14, 14a). The invention further relates to a stamping device (30) for embossing the folding flange (12) having the inner steel panel (14) and the outer soft metal sheet (16).
Description
Technical field
The present invention relates to a kind of for connecting the method for steel inner panel and soft metal outside plate and a kind of decompressor for punching press undercut flange by undercut flange.
Background technology
More and more use the mixed structure form be made up of high strength and the steel inner panel of very high strength and the soft metal outside plate of such as aluminium outside plate for the object of loss of weight in auto industry and other field.This requires the brand-new interconnection technique optimized in other words.Possible scheme is a rivet interlacement, but only could be able to realize by the metal of softness and very wide flange.Another kind of possible scheme is folding, particularly roll fold.Here on the steel inner panel of thermoforming or the inner panel of similar very high strength, design the outside plate of an aluminum.In order to connection two plates closed, use a kind of adhesive between the two plates, such as epoxyn.This epoxyn hardens in ensuing ability cathode electrophoresis lacquering process at about 170 DEG C.Due to the different heat expansion coefficient of aluminium and steel, in the drying unit of ability cathode electrophoresis lacquering process, aluminium moves in the undercut on steel inner panel.Adhesive hardens in this state, thus the position of movement is fixed.This causes the flexural deformation between parts, and this distortion of sclerosis in addition due to adhesive is irreversible.This flexural deformation makes this method not easily realize or makes it can not be applied in certain some service condition, such as doorframe flange.
DE 10 2,004 047 229 A1 discloses the connected mode between the adjacent same parts of two of a kind of support sections.In order to make this parts connected mode can transmit very large power and torque simultaneously, element portion with form fit mutual around.This exterior part is coordinated by least part of power of punching press or being connected of frictional fit in overlapping region.Here the special connection between steel inner panel and soft metal outside plate is not related to.
Summary of the invention
Technical problem to be solved of the present invention is, improves the connected mode between steel inner panel and soft metal outside plate.
Described technical problem is solved by a kind of method for connecting steel inner panel and soft metal outside plate by undercut flange, wherein, after folding outside plate, carries out punching press in the scope that the undercut of undercut flange is rolled up, thus stops the upper cunning of outside plate on the direction of inner panel.Described technical problem is also solved by a kind of decompressor.
Comprising for the method connecting steel inner panel and soft metal outside plate by undercut flange according to invention, after folding outside plate, in the undercut volume region of undercut flange, carry out punching press, thus avoid the upper cunning of outside plate on inner panel direction.Can realize now such as the connection between the steel inner panel of vehicle side and soft metal outside plate by according to the method for invention.The cost of aluminium-steel making technology here can be reduced by cancelling riveting operation.In addition the width by such as using the width of 12mm to replace 15mm can reduce undercut flange.This can weight reduction improve comfortableness.In addition can obtain a kind of instrument efficiently by the punching press of locating after folding, thus offset thermal bending deformation by very short quality control ring.
One in six-freedom degree can be locked accurately by punching course, this free degree prevent outside plate occur on inner panel direction less desirable sliding (Aufgleiten) or on move (Aufschieben).In addition other in the fabrication process more precisely in order to the motion of offsetting needed for tolerance is also possible.This may be the motion to side surface direction on the end face of inner panel, or motion in the vertical direction on the end face of inner panel, and the motion of end face away from inner panel.Therefore lock unique less desirable direction of motion, and in addition allow remaining five direction of motion.
Specify in preferred structure of the present invention, punching press is carried out between the end face and the bend of undercut volume of inner panel.Carry out punching press advantageously in this position, do not damage or damage inner panel hardly on the one hand, do not damage the bend of the partial visual of undercut volume on the other hand equally.
In this regulation, at least two inner panels stacked up and down smooth in end region are set.Method according to invention is particularly suitable for manufacturing the connection between multiple steel inner panel and a soft metal outside plate, and this manufacture is also very difficult up to now.Mobile upper sliding possible freedom of motion in other words increases together along with inner panel quantity.Punching press carried out to outside plate also can connect now multiple by autotelic, preferred two to four inner panels with by soft metal, the outside plate that such as aluminium is made.
Specify in the preferred structure of another kind of the present invention, inner panel has the steel of very high strength.The steel of very high strength, the thermoforming of such as through hardening has just been particularly suitable for the method according to invention, because it also may be made up to now to be hardly connected with a kind of outside plate of soft metal.
Specify in another kind of preferred structure more of the present invention, outside plate has aluminum or aluminum alloy material.Other soft metal of use that equally also can be favourable, such as magnesium or titanium.Although enlarge markedly for the user demand of object to aluminum alleviating quality in automobile manufacturing field, this manufacturing technology but blank wall expecting behind up to now.By the present invention now can cost advantages and manufacture aluminium-steel mixed structure efficiently.
Favourable regulation, is formed from 2 to 6 between the tensile strength of two kinds of plates, preferably from 3 to 4 factor.Method according to invention is particularly suitable for the significantly different plate of tensile strength, because they also have significantly different thermal coefficient of expansions.Up to now the connection between inner panel and outside plate is also not easy to realize.Carry out punching press according to the method for invention be used to connect different material by autotelic.
Decompressor can have the size or specification or scope of rolling up in undercut
interior extension.The ideal dimensions of decompressor can depend on the material of inner panel and quantity, the material of outside plate, applicable cases and other factor.Already showed, undercut volume size in, namely undercut volume height in impression achieve good effect.The height of undercut volume equals the total height of individual plates here substantially.It is also possible that impress the extension had in the height or thickness range of individual plates.
Specify in preferred structure of the present invention, along undercut flange, multiple impression is set with the spacing of three to ten times, preferably four to six times of undercut tape measures cun.Quantity and the position of impression can have an impact to thermal bending deformation.In a control loop, in process, such as also can adjust position and/or the quantity of impression thus.This can make process more stable.
Specify in the preferred structure of another kind of the present invention, form undercut flange by roll fold (Rollfalzen).Roll fold is fast a kind of and the method for attachment of cost advantages thus, and it can well mate advised punching course.Roll fold and punching press is carried out to rolling undercut flange can realize a kind of quick and various manufacture method afterwards.
Decompressor according to the undercut flange for punching press steel inner panel and soft metal outside plate of invention comprises, decompressor comprises the drift of a side with smooth or slow tiltedly (flach) of end face for aiming at inner panel and the inclined side for the bend of the undercut volume of aiming at undercut flange, wherein drift is designed between the embedding end face of punching press and bend, thus avoids outside plate sliding on inner panel.Identical advantage and amendment are similarly, as described above.Decompressor and drift can realize autotelic carry out punching press and to inner panel and undercut volume cause damage.Smooth side improves tolerance in decompressor and sensitivity, and inclined side ensures that on the impact of undercut volume be minimum.
Illustrate as long as different structure form of the present invention mentioned in present patent application does not do other on rare occasion, can be favourable be combined with each other.
Accompanying drawing explanation
The present invention is set forth by by appended diagram in topology example hereafter:
Fig. 1 illustrates the schematic diagram of the sidepiece of body of a motor car;
Fig. 2 illustrates that the process of sidepiece folds and and then through the sectional view of the undercut flange of punching press;
Fig. 3 illustrates the schematic isometric of the undercut flange be stamped;
Fig. 4 illustrates the schematic diagram of punching course;
Fig. 5 illustrate punching course another schematic diagram and
Fig. 6 illustrates the detailed view of stamping tool.
Detailed description of the invention
Schematically show the sidepiece 10 of automobile in Fig. 1, adopt the method being used for connecting steel inner panel and soft metal outside plate by undercut flange here.Adhesive in undercut flange can carry out cure process after punching press, but for according to invention method not necessarily.Sidepiece 10 has one or more undercut flange 12 in the region of doorframe.This undercut flange 12 can manufacture by a roll fold device, and roll fold device is here guided by a robot or sidepiece is transported to roll fold device by an automaton or similar equipment.
Undercut flange 12 has six-freedom degree on the end face of inner panel.Comprise two tangential motions on tangential X.This motion be allowed to and not by according to invention method fix.Two freedoms of motion on vertical direction Z are usually determined by undercut and are not hindered equally.Motion on the plane normal direction Y of inner panel end face is then treated with a certain discrimination.When roll fold sliding into the position be positioned at below it and not being allowed to and being stoped by impression, glide from the position being positioned at below and there will not be and also not need to stop with this.Upper cunning is inside from paper according to Fig. 1, and it is outside from paper according to Fig. 1 to glide.The relative motion of whole motion in other words between the inner panel that is formed from steel in other words of the direction of motion outside plate be made up of soft metal of correspondence and inner panel.
Show that two through through folding doorframe flange 12 (upper illustration) with through folding and and then through schematic cross-section or the sectional drawing of the doorframe flange 12 (below diagram) of punching press in fig. 2.
Shown is first inner panel 14 be made up of the steel of very high strength, and a second inner panel 14a be made up of same material or another kind of steel.Two inner panels 14 and the smooth arc of 14a overlapping.Two inner panels 14 and 14a are smooth to be again positioned on the outside plate 16 be made up of aluminium or aluminium alloy.Outside plate 16 is folded around two inner panels 14 and 14a in end face 18 region of inner panel 14.This process such as realizes by a roll fold device.
Undercut flange 12 has a bending undercut volume 20, and what it was outside plate 16 around inner panel 14 and 14a is bending, and a flange portion 22, and it is the plate end of outside plate 16 and the overlapping regions of inner panel 14 and 14a.Flange portion 22 such as can have the width of 12mm.Single plate has 0.1 to the thickness within the scope of about 1.5mm.
Adhesive 24 is such as a kind of epoxyn, and it is disposed between inner panel 14 and outside plate 16.In addition can specify, make adhesive 24 or a kind of similar adhesive placement between inner panel 14 and the second inner panel 14a.The diagram being positioned at top in Fig. 2 shows the undercut flange 12 after having folded.
The diagram being positioned at below in Fig. 2 is shown after folding through the undercut flange 12 of punching press.Impression or punch-out 26 are arranged in outside plate 16, more precisely in the region between the end face 18 and undercut volume 20 of inner panel 14.Impression 26 is arranged on top here, i.e. in the end regions 28 of outside plate 16.Impression 26 also can realizing at outside plate 16 in the zone line that below is shown.In addition also conceivable, to outside plate 16 on the both sides of undercut flange 12, be that punching press is carried out in the upper side and lower side here.This such as can realize by the decompressor of tong-like.
Schematic with three-dimensional diagram displaying undercut flange 12 again in figure 3.As what can find out, two inner panels 14 and 14a and outside plate 16 by impression 26 mechanical interlock to a certain extent, this stop outside plate 16 y upwards on slide on two inner panels 14 and 14a.The relative tangential movement of plate on tangential y is still possible.Impression 26 has the extension that is roughly the size of the height of undercut volume 20 on x direction and/or y direction, and namely space extends.
Along undercut flange 12, namely opposing end surface 18 tangential on multiple preferably identical impression is set.These other be stamped in here for representing that clearly object does not show.Can stop by the position impressed and quantity or reduce thermal bending deformation.Impression 26 such as has several or some centimetres distance.
The local indent of undercut flange 12 makes inner panel 14,14a and outside plate 16 produce mechanical connection.Can autotelic blocking member produces due to the different thermal bending deformation coefficient of aluminium and steel with each other in ensuing ability cathode electrophoresis lacquering process relative sliding move in other words thus, namely upper sliding.
Show punching course in the diagram and schematically show decompressor 30.Decompressor 30 has a drift 32, and it has prismatic shape here.One of decompressor 30 smooth counter support 34 places a undercut flange 12.More precisely outside plate 16 is positioned at the zone line on counter support 34.Drift 32 is roughly 10 to 45 ° from top with one, and the angle preferably between 10 and 25 ° presses to the end face 18 on the end regions 28 of outside plate 16.Drift 32 and outside plate 16 come in contact in end face 18 region of inner panel 14.Punching course realizes the connection between the trimming of outside plate 16 and inner panel 14a here.Trimming is corresponding with end face 18.
Show another punching course undertaken by decompressor 30 in Figure 5.Here drift 32 carries out punching press on the plane normal Y of outside plate 16.Here the impression 26 produced also produces and connects between outside plate 16 and inner panel 14 and 14a.Drift 32 shown in Figure 4 and 5 has a space in planar process and extends on Y, and this can realize large-area impression 26.
Show the another kind of decompressor 30 with another kind of drift 32 in figure 6.In planar process, only there is on Y a very little extension, such as a tip 36 or a radius of circle.A slow oblique side 38 and a side 40 tilted is extended from 36s, pinnacle.Flattened side 38 is towards end face 18 inner panel 14 and 14a in other words.The smooth side 38 relatively upper surface of plate and the counter support 34 that do not show here has the angle that is approximately 45 °.Smooth side 38 for producing larger stamped area and producing higher tolerance insensitivity thus in impression 26 in the scope of end face 18.The side 40 tilted is towards undercut volume 20 and have between 50 and 80 ° on the upper surface of the upper surface counter support 34 in other words of plate, the angle preferably between 60 and 70 °.The side 40 tilted is for producing less impact to undercut volume 20.Drift 32 in the vertical direction Z is depressed on outside plate 16, thus produces impression 26.Outside plate 16 is with inner panel 14 or inner panel 14 and 14a clamp or fix, thus enters ensuing electrophoretic coating operation and baking operation, and do not make outside plate 16 less desirable on slide to inner panel 14 in other words on inner panel 14 and 14a.
List of numerals
10 sidepieces
12 undercut flanges
14 inner panels
14a second inner panel
16 outside plates
18 end faces
20 undercut volumes
22 flange portions
24 adhesive
26 impressions
28 end regions
30 decompressors
32 drifts
34 counter support
36 tips
38 flattened side
40 inclined sides
X tangential direction
Y plane normal
Z vertical direction
Claims (10)
1. one kind for connecting steel inner panel (14 by undercut flange (12), 14a) and the method for soft metal outside plate (16), it is characterized in that, in the scope of undercut volume (20) of undercut flange (12), punching press is carried out after folding outside plate (16), thus stop outside plate (16) the upper cunning on the direction (Y) of inner panel (14,14a).
2. method according to claim 1, is characterized in that, impression is designed between the end face (18) of inner panel (14) and the bend of undercut volume (20).
3. method according to claim 1, is characterized in that, the inner panel (14,14a) stacked up and down that design at least two is smooth in the scope of end face (18).
4. method according to claim 1, is characterized in that, inner panel (14,14a) is made up of very high strength steel.
5. method according to claim 1, is characterized in that, outside plate (16) is made up of aluminium or aluminium alloy.
6. method according to claim 1, is characterized in that, impression (26) has the extension in the size of undercut volume (20).
7. method according to claim 1, is characterized in that, arranges multiple impression (26) along undercut flange (12) with the spacing of the undercut of three to ten times, preferably four to six times volume (20) size.
8. method according to claim 1, is characterized in that, undercut flange (12) is formed by roll fold.
9. method according to claim 1, is characterized in that, between the tensile strength of two plates (14,16) formed 2 to 6, preferably from 3 to 4 factor.
10. the decompressor (30) for the undercut flange (12) of punching press steel inner panel (14) and soft metal outside plate (16), it is characterized in that, decompressor (30) comprises a drift (32), it has the flattened side (38) of the end face (18) for aiming at inner panel (14) and the inclined side (40) of bend for undercut volume (20) of aiming at undercut flange (12), here drift (32) is designed between the embedding end face (18) of punching press and bend, thus avoid outside plate (16) upper sliding towards inner panel (14).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014201998.2 | 2014-02-04 | ||
| DE102014201998.2A DE102014201998A1 (en) | 2014-02-04 | 2014-02-04 | Method for joining and embossing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104815912A true CN104815912A (en) | 2015-08-05 |
| CN104815912B CN104815912B (en) | 2018-01-30 |
Family
ID=53726522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510161645.8A Active CN104815912B (en) | 2014-02-04 | 2015-02-04 | Method and decompressor for connection |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104815912B (en) |
| DE (1) | DE102014201998A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107537942A (en) * | 2016-06-28 | 2018-01-05 | 大众汽车有限公司 | Rolling crimping unit and method for the seamed edge region flanging to board |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737211A (en) * | 2019-03-01 | 2019-05-10 | 郑荣俊 | Valve sealing structure and closed air-valve |
| GB2627994A (en) * | 2023-03-10 | 2024-09-11 | Jaguar Land Rover Ltd | Vehicle door aperture assembly |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55148657A (en) * | 1980-03-06 | 1980-11-19 | Daihatsu Motor Co Ltd | Hemming method for body structure of automobile |
| DE4440815A1 (en) * | 1994-11-15 | 1996-05-23 | Bayerische Motoren Werke Ag | Formation of folded seam joint between vehicle panel sheets |
| JPH10180373A (en) * | 1996-12-20 | 1998-07-07 | Mazda Motor Corp | Roller type behemming method and device therefor |
| EP1112790A2 (en) * | 1999-12-30 | 2001-07-04 | Unova IP Corp. | Modified flat hem apparatus and method |
| US6672121B2 (en) * | 2002-04-15 | 2004-01-06 | General Motors Corporation | Flat pinch hemming of aluminum panels |
| JP3644466B2 (en) * | 1996-07-19 | 2005-04-27 | 日産自動車株式会社 | Hemming method |
| CN1826190A (en) * | 2003-09-08 | 2006-08-30 | 住友轻金属工业株式会社 | Aluminum alloy plate member having hem portion |
| JP2011245514A (en) * | 2010-05-27 | 2011-12-08 | Honda Motor Co Ltd | Panel member and method for manufacturing the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19649443B4 (en) * | 1995-11-28 | 2009-07-09 | Puertas Padilla, S.L. | Fire door and method for its manufacture |
| DE102004047229A1 (en) | 2004-09-27 | 2006-04-13 | Claas Fertigungstechnik Gmbh | A connection between components |
| ES2339838B1 (en) * | 2008-03-11 | 2011-06-13 | Gines Padilla Pedreño | PANEL UNION. |
| JP2011131261A (en) * | 2009-12-25 | 2011-07-07 | Honda Motor Co Ltd | Panel structure and method of manufacturing it |
-
2014
- 2014-02-04 DE DE102014201998.2A patent/DE102014201998A1/en active Pending
-
2015
- 2015-02-04 CN CN201510161645.8A patent/CN104815912B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55148657A (en) * | 1980-03-06 | 1980-11-19 | Daihatsu Motor Co Ltd | Hemming method for body structure of automobile |
| DE4440815A1 (en) * | 1994-11-15 | 1996-05-23 | Bayerische Motoren Werke Ag | Formation of folded seam joint between vehicle panel sheets |
| JP3644466B2 (en) * | 1996-07-19 | 2005-04-27 | 日産自動車株式会社 | Hemming method |
| JPH10180373A (en) * | 1996-12-20 | 1998-07-07 | Mazda Motor Corp | Roller type behemming method and device therefor |
| EP1112790A2 (en) * | 1999-12-30 | 2001-07-04 | Unova IP Corp. | Modified flat hem apparatus and method |
| US6672121B2 (en) * | 2002-04-15 | 2004-01-06 | General Motors Corporation | Flat pinch hemming of aluminum panels |
| CN1826190A (en) * | 2003-09-08 | 2006-08-30 | 住友轻金属工业株式会社 | Aluminum alloy plate member having hem portion |
| JP2011245514A (en) * | 2010-05-27 | 2011-12-08 | Honda Motor Co Ltd | Panel member and method for manufacturing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107537942A (en) * | 2016-06-28 | 2018-01-05 | 大众汽车有限公司 | Rolling crimping unit and method for the seamed edge region flanging to board |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014201998A1 (en) | 2015-08-20 |
| CN104815912B (en) | 2018-01-30 |
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