EP1531951A1 - Verfahren und vorrichtung zum f gen eines fl chigen bau teils an ein hohlprofil - Google Patents
Verfahren und vorrichtung zum f gen eines fl chigen bau teils an ein hohlprofilInfo
- Publication number
- EP1531951A1 EP1531951A1 EP03793638A EP03793638A EP1531951A1 EP 1531951 A1 EP1531951 A1 EP 1531951A1 EP 03793638 A EP03793638 A EP 03793638A EP 03793638 A EP03793638 A EP 03793638A EP 1531951 A1 EP1531951 A1 EP 1531951A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow profile
- component
- tab
- wall
- perforated
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005304 joining Methods 0.000 title claims abstract description 17
- 241000237858 Gastropoda Species 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract 2
- 238000005452 bending Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
-
- 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
- B21D39/034—Joining superposed plates by piercing
Definitions
- the invention relates to a method for joining a flat component to a hollow profile according to the preamble of patent claim 1 and a device for carrying out the method according to the preamble of patent claim 8.
- a generic method or a generic device is known from DE 196 18 626 C2. This describes a method in which, among other things, a flat component (FIG. 5) with a hollow profile is joined in an internal high-pressure forming tool.
- the hollow profile is expanded by the internal high pressure and positively engages around undercut surfaces of the component, whereby the two joining partners are firmly clamped together.
- the undercut surfaces are formed on an anchor-like connecting element that penetrates both joining partners. This results in an increased outlay for parts for the joint connection and means a more extensive positioning of the parts involved in the connection and a special apparatus-intensive holder for the connecting element.
- the invention is based on the object of developing a generic method or a generic device such that a connection between a flat component and a hollow profile is achieved in a simple and reliable manner.
- the component and the hollow profile are given the best possible support to the side of the penetrating punch.
- this prevents the walls of the hollow profile and the component in the vicinity of the hole produced from being depressed when the stamp is applied, as a result of which the wall contours remain unaffected and thus have a high-quality outer surface.
- the joining partners, hollow profile and component are kept exactly positioned at all times, so that the stamp can reproducibly and jam-free bend the tab out of the component wall, punch the hollow profile wall and press the tab into the hole, engaging behind the edge of the hole, without a special effort would be required.
- the tab has a greater width in the bent position than that of the hole, so that the component can no longer be pulled vertically out of the hollow profile.
- any flat component with any hollow profile can be joined in a simple manner, especially since connecting elements and the associated outlay on the device can be dispensed with.
- the component is fixed to the hollow profile with little effort, and this part definition can be economically incorporated into an internal high-pressure forming process in which the hollow profile is to be shaped from a blank.
- Fig. Lb the connection from Fig. La in a lateral cross section
- 2a is a cross section of a connection made according to the invention with two tabs and two perforated slugs,
- FIG. 2b shows the connection from FIG. 2a in a lateral cross section
- 3a shows a plan view of a hollow profile connected to a component according to the invention with three axially offset connection points
- FIG. 3c in a lateral longitudinal section the hollow profile from FIG. 3b.
- a section of a hollow profile 1 is shown, which is joined with a flat component 2.
- component 2 and hollow profile 1 are inserted into the engraving of a segmented internal high-pressure forming tool of a joining device, component 2 being positioned relative to hollow profile 1 in such a way that it comes to rest on it.
- the forming tool is fluidly connected to a high-pressure fluid generator, via which the hollow profile 1 is expanded by means of a tensionable pressure fluid, the hollow profile wall 3 being pressed against the engraving.
- a tensionable pressure fluid As long as an internal high pressure is exerted in the hollow profile 1, this is sealed at both ends 4 (Fig. 3a, c) with sealing stamps.
- the mutually adjoining walls 3 and 5 of hollow profile 1 and component 2 are jointly acted upon by a stamp 6 integrated in the forming tool, which is displaceably displaceable in a guide formed there, in a movement of the stamp 6.
- the wall 3 of the hollow profile 1 is perforated by the punch 6, specifically in such a way that the perforated slug 7 that arises cohesively attaches to one point of the perforated edge 8 and increases in width towards its free end 9.
- a section in the form of a tab 10 of the same shape with respect to the slug 7 is bent into the interior 11 of the hollow profile 1 into a position in which the tab 10 engages behind the hole edge 8 of the hollow profile 1 ,
- the slug 7 as well as the tab 10 protrude from the walls 3 and 5 at right angles into the hollow profile 1.
- the shape of the tab 10 and the perforated slug 7 can be designed in a wide variety of ways. For example, a trapezoidal shape, an oval or circular configuration, as the latter is shown in FIG. 1b, is possible. It is essential, however, that the tab 10 has a greater width at one point than at its end 12 connected to the wall 5, so that in the right-angled bending position against the vertical lifting movement of the component 2 by reaching behind the edge of the hole 8 at this wider point of the tab 10 there is resistance which prevents the component 2 from being pulled out of the hollow profile 1 guaranteed.
- the punch 6 on the side facing the end 12 of the tab 10 has a beveled side wall 13 of positive slope, by means of which the tab 10 with the counterpart when the plunger 6 is immersed in the hole 14 in cooperation with the counteracting internal high pressure Perforated slug 7 is pressed.
- the pressing is carried out in such a way that the flap 10 does not spring back from the end of bending position and thus maintains the desired position, and at the same time the component 2 is removed from the hollow profile 1 by the high frictional connection between the slug 7 and the flap 10, if at all, is very difficult.
- the punch 6 has a cutting edge 17 running at the edge 15 of its end face 16, with which the walls 3 and 5 are acted upon, to which the side wall 13 adjoins.
- the tab 10 can be produced in several variants.
- the tab 10 of the component 2 can be precut before being introduced into the forming tool.
- the cutting edge 17, by means of which the punch 6 punches the hole 14 as described is subjected to less stress and is thus less worn.
- the stamp 6 there is one for the stamp 6 lower punching force necessary, which reduces the effort for driving the stamp 6.
- the perforated slug 7 is punched out more precisely, since the cutting edge 17 of the punch 6 essentially meets the wall 3 of the hollow profile 1 directly.
- the contour of the tab 10 of the component 2 can be impressed on the component 2 before it is introduced into the forming tool, as a result of which the stamp 6 only has to separate the tab 10 from the wall 5 of the component 2 with little force due to the predetermined breaking point created as a result of the embossing.
- the tab 10 is also cut by means of the stamp 6 with the perforated slug 7, which is economical in terms of the method, since the tab 10 and perforated slug 7 are produced in one operation. Furthermore, all the devices 5 preparing the wall 5 for bending out the tab 10 are omitted.
- the cutting edge 17 of the punch 6 can also be designed such that, on the one hand, to form the two opposite longitudinal slug sides or, if appropriate, to form the two opposite longitudinal tab sides, correspondingly laterally on the edge 15 of the end face 16 runs and on the other hand also extends transversely between the end points of the lateral course (for example arranged in the middle here), so that it connects the two sides with one another.
- bevels 19 adjoin the central section of the end face 16 of the stamp 6. At these displacement bevels 19, steeply lerem the inclined side walls 13 on. Due to the described generation of two opposite tabs 10a, b, a lateral displacement of the respective tab 10a, b and thus a separation of the component 2 from the hollow profile 1 by a combination of a pushing movement out of the bending position and a subsequent vertical pulling movement is no longer possible, so that the Fixing the component 2 on the hollow profile 1 is significantly improved.
- the manufacturing device contains three locally separated stamps 6a-c (FIG. 3c). Accordingly, at least one tab 10 is bent out of the wall 5 of the component 2 at three separate locations by means of the punches 6a-c, and at least one perforated slug 7 is cut out of the wall 3 of the hollow profile 1, the wall 3 of the hollow profile 1 being punched accordingly will (Fig. 3a and c).
- the stamp 2 a, c ensures that the component 2 is on can not twist the hollow profile 1. As is particularly evident from FIGS.
- the third stamp 6b is offset by 90 ° in the circumferential direction with respect to its position relative to the other two stamps 6a, c.
- the third hole, the third hole slug and the third tab 10e are designed with respect to the shape of the other two holes, hole slugs and tabs 10c, d. This offset of the third lug 10e means that a lateral displacement of the component 2 on the hollow profile 1 is impossible.
- the hollow profile 1 is formed by a box profile (FIG. 3b).
- the flat component 2 receives a clean contact with the hollow profile 1 even before joining, which is favorable for the unimpeded cutting of the perforated slug 7 and thus also the bending of the tab 10 into the hole 14.
- a blank with a round cross-section is expanded into the box profile in accordance with the engraving of the forming tool before joining in the same forming tool by means of internal high pressure.
- the configuration of the flat component 2 is not limited to flat surfaces. In the case of uneven surfaces, it is advantageous for good contact with one another and the subsequent application of the walls 3 and 5 to suitably adapt the hollow profile 1 to the component 2 by widening.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10237422A DE10237422C1 (de) | 2002-08-16 | 2002-08-16 | Verfahren und Vorrichtung zum Fügen eines flächigen Bauteils an ein Hohlprofil |
| DE10237422 | 2002-08-16 | ||
| PCT/EP2003/008107 WO2004022257A1 (de) | 2002-08-16 | 2003-07-24 | Verfahren und vorrichtung zum fügen eines flächigen bauteils an ein hohlprofil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1531951A1 true EP1531951A1 (de) | 2005-05-25 |
Family
ID=7714841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03793638A Withdrawn EP1531951A1 (de) | 2002-08-16 | 2003-07-24 | Verfahren und vorrichtung zum f gen eines fl chigen bau teils an ein hohlprofil |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20060151577A1 (de) |
| EP (1) | EP1531951A1 (de) |
| CA (1) | CA2495464A1 (de) |
| DE (1) | DE10237422C1 (de) |
| WO (1) | WO2004022257A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10350152B3 (de) * | 2003-10-28 | 2004-10-21 | Daimlerchrysler Ag | Vorrichtung und Verfahren zum Herstellen eines Hohlkörpers |
| CN108161268B (zh) * | 2018-01-22 | 2024-04-02 | 浙江邦得利环保科技股份有限公司 | 一种egr冷却器加工用管壳步进打点机 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3793791A (en) * | 1971-10-21 | 1974-02-26 | W Wootten | Method and apparatus for forming a panel for use as a structural element |
| US3925875A (en) * | 1973-05-29 | 1975-12-16 | Angeles Metal Trim Co | Method of constructing a prefabricated wall module |
| US5431326A (en) * | 1994-09-07 | 1995-07-11 | General Motors Corporation | Method of forming a tubular member with separate flange |
| DE19618626C2 (de) * | 1996-05-09 | 2001-03-08 | Daimler Chrysler Ag | Unlösbare Verbindung und eine Anordnung zur Herstellung derselben |
| JP3351290B2 (ja) * | 1997-04-25 | 2002-11-25 | 住友金属工業株式会社 | 金属管の液圧バルジ加工方法および装置 |
-
2002
- 2002-08-16 DE DE10237422A patent/DE10237422C1/de not_active Expired - Fee Related
-
2003
- 2003-07-24 CA CA002495464A patent/CA2495464A1/en not_active Abandoned
- 2003-07-24 US US10/524,588 patent/US20060151577A1/en not_active Abandoned
- 2003-07-24 EP EP03793638A patent/EP1531951A1/de not_active Withdrawn
- 2003-07-24 WO PCT/EP2003/008107 patent/WO2004022257A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004022257A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060151577A1 (en) | 2006-07-13 |
| WO2004022257A1 (de) | 2004-03-18 |
| DE10237422C1 (de) | 2003-05-28 |
| CA2495464A1 (en) | 2004-03-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20050129 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DAIMLERCHRYSLER AG |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Effective date: 20070706 |