EP3755481A1 - Pièce de structure soudée par des points de soudure a une autre pièce de structure et comportant le long de la soudure des parties à rigidité variable - Google Patents
Pièce de structure soudée par des points de soudure a une autre pièce de structure et comportant le long de la soudure des parties à rigidité variableInfo
- Publication number
- EP3755481A1 EP3755481A1 EP19710000.1A EP19710000A EP3755481A1 EP 3755481 A1 EP3755481 A1 EP 3755481A1 EP 19710000 A EP19710000 A EP 19710000A EP 3755481 A1 EP3755481 A1 EP 3755481A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- structural part
- edge
- punch
- pins
- 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- Withdrawn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
- 238000003466 welding Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 206010000496 acne Diseases 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000750 progressive effect 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
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
-
- 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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
-
- 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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/16—Additional equipment in association with the tools, e.g. for shearing, for trimming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/34—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
Definitions
- the present invention relates to a structural part of a vehicle adapted to be secured by welding points to another structural part of the vehicle.
- the present invention relates in particular to a first part of the structural part which forms a strip.
- the strip is adapted to receive the weld points and has a first edge which forms a free edge of the structural member and a second opposite edge.
- the structural part comprises, along a portion of the second edge of the strip, at least one rib that stiffens the portion of the strip that is positioned between the rib and the first edge of the strip, creating along the strip of the structural part of the parts with variable rigidity. It is known to have such an assembly where, at the edge of a first piece, ribs are formed which alternate with parts without ribs.
- a strip at the edge of the first piece, along which is formed weld points thus has stiffened sections and more flexible sections.
- the present invention aims to overcome these problems and to provide a structural part of a vehicle which has a first part which forms a strip which is adapted to receive weld points to secure the structural part to another piece of vehicle structure.
- the strip must have a flat surface over its entire length and this regardless of the shape of the rest of the structural part, ensuring a good assembly with good durability of the welding points formed along said strip and also ensuring a good seal assembly.
- the subject of the invention is a structural part of a vehicle which comprises a first part which forms a strip, said strip being adapted to receive weld points for securing said structural part to another structural part of the structure. vehicle.
- a band has a first edge which forms a free edge of the structural part and a second opposite edge.
- the structural part comprises, along a portion of the second edge of the strip, at least one rib that stiffens the portion of the strip that is positioned between said rib and said first edge, such that the strip comprises a stamped which is formed by a succession of pins and which is positioned so as to juxtapose said stiffened section of the strip.
- the spikes of the stamping are alternately projecting from a first face of the strip and from the opposite face of said strip.
- the pins of the stamping are at least positioned in two rows, each row being aligned substantially parallel to the first edge of said strip.
- a structure of the vehicle comprises a structural part, as described above, which is secured by welding points to another structural part.
- the welding points are preferably positioned along the strip of the structural part, away from the stamping.
- the present invention also relates to a punch for a stamping tool for forming by stamping such a structural part such that the punch comprises a central portion which has a working surface formed by the pins and two lateral parts which form mounting interfaces adapted to fix the punch on the stamping press.
- the central portion has at least rows of two pins.
- Such a stamping tool comprises at least two such punches for forming a stamping as described above on a structural part of a vehicle.
- the two punches are identical; a first of the two punches forming an upper punch and the second forming a lower punch between which is intended to be shaped the structural part.
- the working surfaces of the central portions of said two punches are aligned parallel to each other, facing each other, with a lateral offset of a half-pin along two longitudinal and transverse directions of said working surfaces. .
- the present invention also relates to a vehicle which comprises a structure composed of at least two structural parts of which at least one comprises a stamped part which comprises at least one of the preceding characteristics.
- FIG. 1 shows a structural part of a vehicle which comprises a first part which is adapted to be secured by soldering points to another structural part, the first part comprising stampings adapted to tension locally said first part according to the invention
- Figure 2 shows a detail view of Figure 1 at the location of one of the stampings
- FIG. 3 shows a part of a stamping tool, comprising an upper frame on which is fixed an upper punch and a lower frame on which is fixed a lower punch, with an upper punch and a lower punch according to FIG. invention;
- Figure 4 shows a front view of the lower punch according to the invention, which is in all respects similar to the upper punch;
- Figures 5 to 8 show different stages for mounting on a stamping tool of the lower punch and the upper punch with a fitting accuracy adapted to form a stamped on a structural part according to the invention.
- FIG. 1 represents a structural part 1 of a vehicle which comprises a first part 11 which forms a strip and which is adapted to be secured by soldering points 12 to another structural part 2.
- the weld points 12 are aligned along the greater length of the strip 11.
- the strip 11 has a first edge 13 which forms a free edge of the structural part 1.
- the edge opposite the first edge 13 of the strip 11 forms a second border 14.
- the structural part 1 comprises, along a portion of the second edge 14 of the strip 11, at least one rib 15.
- Each rib 15 stiffens a section 16 of the strip 11 which is positioned between the rib 15 and the first edge 13 (one of the two sections 16 is shaded in this figure).
- the strip 11 comprises a stamp 3 which is formed by a succession of pins.
- the stamp 3 is positioned so as to juxtapose the stiffened section 16 of the strip 11.
- pressed 3 is preferably positioned near the second edge 14.
- Each of the stampings 3 makes it possible to stretch the portion of the strip 11 which extends from the corresponding rigidified section 16 along the remainder of the strip 11.
- the creation of such a tension by the stampings 3 along the band 11 makes it possible to have a progressive variation of the rigidity of the strip 11 between the rigidified sections 16 and the less rigid parts, devoid of the ribs 15.
- FIG. 2 represents a detail view of FIG. 1, at the location of one of the stampings 3.
- the spikes 31 of the stampings 3 have, in this embodiment, a dome shape. But it can be as interesting to have also conical or pyramidal pimples. Is also more particularly visible the orientation of the pins 31 which are alternately projecting from a first face of the strip 11 and the opposite face of said strip 11 and that it is along each row or along each column .
- each stamp 3 has four parallel lines of three aligned pins 28 forming a rectangular grid.
- the stampings 3 are preferably close to the second edge 14 of the strip. the band 11, thus avoiding one of the weld points 12 is too close to one of the embossed 3.
- FIG. 3 represents a portion of a stamping tool 4, which comprises an upper frame 41 on which is fixed an upper punch 42 and a lower frame 43 on which is fixed a lower punch 44.
- the upper punch 42 is identical to the lower punch 44.
- the upper punch 42 and the lower punch 44 has a central portion 45 which has a working surface formed by the pins 46.
- the upper punch 42 is positioned vis-à-vis the lower punch 44 on the stamping tool, aligned parallel to each other, with a shift of one half-pin 46 in the two longitudinal and transverse directions of the part central 45 of the upper punch 42 and the central portion 45 of the lower punch 44.
- a top 47 of a bar 46 of the central portion 45 of the upper frame 42 is adapted to be housed, closed position of the stamping tool 4, in a recess 48 formed at the center of four pins 46 of the central portion 45 of the lower punch 44.
- an apex 47 of a bar 46 of the central portion 45 of the punch lower 44 is adapted to be housed, in the closed position of the stamping tool 4, in a recess 48 formed at the center of four pins 46 of the central portion 45 of the upper punch 42.
- the lower punch 44 is positioned offset from the upper punch 42 of a half pin 46 along each line and along each row of lines.
- a stamped 3 which comprises a succession of pins 31 which are alternatively projecting from a first face of the strip 11 and the opposite face of said strip 11.
- the height of the pins 31 of the stamping 3 thus formed is generally between 0.3 and 0.6 mm.
- This alternation of pins 31 of the stamping 3 can effectively stretch the portion of the corresponding strip 11 without creating too much stress on the strip 11 during the stamping operation, avoiding tearing problems of the structural part 1.
- adjustment calli 49 Between the upper punch 42 and the upper frame 41 and between the lower punch 44 and the lower frame 43 are interposed adjustment calli 49 whose thickness can be adapted according to the stamping constraints.
- Figure 4 shows a front view of the lower punch 44, which is similar to the upper punch 42 as shown in Figure 3.
- the pins 46 of the lower punch 44 are aligned in two directions to form a grid.
- the grid comprises eighteen pins 46 aligned along eight rows.
- a mounting interface 5 adapted to allow the fixing of the lower punch 44 on the lower frame 43 as shown in Figure 3. It is the same for the attachment of the upper punch 42 on the upper frame 41 via two mounting interfaces 5 identical in all respects.
- Each mounting interface 5 has three aligned openings; two first openings 51 at both ends, which frame a second opening 52 central.
- a first 51a of the two end openings 51 is aligned with the top 47 of a row of pins 46 of the central portion 45
- the second 51b of the two end openings 51 is aligned with the line of separation of two rows of pins 46 of the central portion 45.
- said recesses 48 formed between the pins 46 of the central portion 45.
- the two end openings 51 and the center opening 52 of the first of the two mounting interfaces 5 are offset by half a pin 43 of the central portion 45 relative to the two end openings 51 and the center opening 52 of the second mounting interface 5.
- This difference of one half pole 43 following these two orthogonal directions is adapted so that for identical fixing points formed in the upper frame and in the lower frame, that the punches according to the direction of assembly comprise well, when the stamping tool is in the closed position, the top of the pins of one of the two punches which is positioned in the hollow formed between four pins of the other punch. Because of the size of the pins 43 of the central portion 45, the alignment of the two punches must be done with great precision, following a very particular mounting process.
- Figures 5 to 8 show different stages for mounting on a stamping tool a lower punch 44 and an upper punch 42 with a suitable mounting accuracy.
- the lower and upper punches 44 are respectively positioned on the lower 43 and upper 41 frames which are positioned on the stamping tool.
- the stamping tool is intended to be mounted in a press to present that allows the development of the assembly, before being positioned in the final stamping press.
- Figure 5 is shown the first step of positioning the lower punch 44 and a lower adjustment wedge 49 on the lower frame 43.
- Two screws 61 are screwed into the lower frame 43 and in the two central openings 52 of the two interfaces 5 (a single screw 61 on both being shown).
- FIG 6 is shown the second step of positioning the upper punch 42 and a lower adjusting wedge 49 on the upper frame 41.
- Two screws 61 are screwed unclamped in the upper frame 41 and in the two central openings 52 of the two mounting interfaces 5 of the upper punch 42 (only one of the two screws 61 being shown in this figure).
- the upper frame 41 are not yet formed the openings which will be positioned in the extension of the two lateral openings 51 of the two mounting interfaces 5 of the upper punch 42.
- the central portion 45 of the upper punch 42 is positioned offset from a half pin 46 with respect to the central portion of the lower punch, while having the openings of the mounting interfaces 5 of the upper punch 42 which are opposite the corresponding openings of the mounting interfaces of the lower punch.
- Figure 7 is shown a third step where the stamping tool is mounted returned to the press to present, reversing the positioning of the upper punches 42 and lower 44 and upper frames 41 and corresponding lower 43.
- FIG. 8 shows a fourth step where the press to be presented is positioned in a partially closed manner, matching the free ends of the long pins 62 (referred to in the lower frame 43 and in the lateral openings 52 of the lower punches 44) with the Lateral openings 52 of the upper punches 42.
- Such positioning makes it possible to center the upper punch 42 with the lower punch 44.
- the screws of the two mounting interfaces 5 of the upper punch 42 are then tightened, allowing the upper punch 42 to be locked in position.
- a fifth step consists in opening the press to present, removing the long pins, extracting the stamping tool from the press to present to make the holes of the pins by counter-drilling, then to mount the short pins (as shown in Figure 3).
- a sixth and last step consists in integrating the stamping tool on the final stamping press, with the correct alignment of the upper punches with the lower punches, making it possible to obtain at least one stamping according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1851422A FR3078003B1 (fr) | 2018-02-20 | 2018-02-20 | Piece de structure soudee par des points de soudure a une autre piece de structure et comportant le long de la soudure des parties a rigidite variable |
| PCT/FR2019/050143 WO2019162582A1 (fr) | 2018-02-20 | 2019-01-22 | Pièce de structure soudée par des points de soudure a une autre pièce de structure et comportant le long de la soudure des parties à rigidité variable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3755481A1 true EP3755481A1 (fr) | 2020-12-30 |
Family
ID=62597620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19710000.1A Withdrawn EP3755481A1 (fr) | 2018-02-20 | 2019-01-22 | Pièce de structure soudée par des points de soudure a une autre pièce de structure et comportant le long de la soudure des parties à rigidité variable |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3755481A1 (fr) |
| FR (1) | FR3078003B1 (fr) |
| MA (1) | MA51904A (fr) |
| WO (1) | WO2019162582A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29712622U1 (de) * | 1997-07-17 | 1997-10-02 | Thyssen Krupp Stahl AG, 40211 Düsseldorf | Bauteil aus einem teilstrukturierten Blech hoher Formstabilität |
| DE10006348C2 (de) * | 2000-02-12 | 2001-12-06 | Daimler Chrysler Ag | Bauteil mit lokal begrenzten Versteifungsbereichen und Verfahren zu seiner Herstellung |
| DE102007051565B4 (de) * | 2007-10-29 | 2013-06-13 | Webasto Ag | Selbsttragendes flächenartiges Karosserieteil |
| DE102010048589A1 (de) * | 2010-09-21 | 2012-03-22 | Giw Gesellschaft Für Innovative Werkzeugsysteme Mbh | Verfahren und Vorrichtung zum Formen flächiger Werkstücke |
| CN103433344A (zh) * | 2013-09-10 | 2013-12-11 | 吴江涵辉纺织有限公司 | 散热薄板冲窝机 |
-
2018
- 2018-02-20 FR FR1851422A patent/FR3078003B1/fr not_active Expired - Fee Related
-
2019
- 2019-01-22 EP EP19710000.1A patent/EP3755481A1/fr not_active Withdrawn
- 2019-01-22 WO PCT/FR2019/050143 patent/WO2019162582A1/fr not_active Ceased
- 2019-01-22 MA MA051904A patent/MA51904A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR3078003A1 (fr) | 2019-08-23 |
| WO2019162582A1 (fr) | 2019-08-29 |
| MA51904A (fr) | 2021-05-26 |
| FR3078003B1 (fr) | 2021-01-15 |
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