EP3003598B1 - Aide d'ajustement pour un dispositif d'assemblage comprenant un poinçon et un contre-outil ainsi que procédé de réglage du dispositif d'assemblage - Google Patents

Aide d'ajustement pour un dispositif d'assemblage comprenant un poinçon et un contre-outil ainsi que procédé de réglage du dispositif d'assemblage Download PDF

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Publication number
EP3003598B1
EP3003598B1 EP14726908.8A EP14726908A EP3003598B1 EP 3003598 B1 EP3003598 B1 EP 3003598B1 EP 14726908 A EP14726908 A EP 14726908A EP 3003598 B1 EP3003598 B1 EP 3003598B1
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EP
European Patent Office
Prior art keywords
punch
counter
die
tool
test part
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.)
Not-in-force
Application number
EP14726908.8A
Other languages
German (de)
English (en)
Other versions
EP3003598A1 (fr
Inventor
Dennis Henke
Mathias Heger
Andreas Jakobsche
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boellhoff Verbindungstechnik GmbH
Original Assignee
Boellhoff Verbindungstechnik GmbH
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Publication date
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Publication of EP3003598A1 publication Critical patent/EP3003598A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K23/00—Making other articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B21C51/005—Marking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/025—Setting self-piercing rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets

Definitions

  • the present invention relates to an adjustment aid for a joining device with a punch and a counter tool, which are aligned coaxially with each other and axially movable towards each other for a joining movement relative to each other. Furthermore, the present invention relates to a method for adjusting such a joining device.
  • Joining devices with a punch and a counter tool, which are aligned coaxially with each other and for a joining movement relative to each other axially movable toward each other, are known and are used in particular for making connections.
  • Such joining devices include tools for setting punch rivets and joining tools, eg. B. for enforcing joining of sheets.
  • the punch provided with a drive and the counter tool matching the punch must always be aligned coaxially with one another.
  • Such a counter tool forms, for example, a die, so that when setting a punch rivet a connecting supportive closing head is formed in the sheets to be joined together.
  • the coaxiality of punch and the counter tool high demands are made because of the strength of the compound to be produced and the appearance of the connection are dependent.
  • the coaxiality of punch and counter tool has the same meaning in presses, embossing machines and punching, because there too, the two co-operating tools must be aligned coaxially with each other. Therefore, the general term joining device is to be understood as meaning all devices which work with coaxially aligned and moving tools, such as the devices described above.
  • a self-piercing riveting system is in US 4,130,922 described.
  • the system comprises a headless rivet made of steel or other suitable material having a compressive strength greater than that of the materials to be abutted together and having a height or thickness equal to the sum of the rivets to be riveted Materials is.
  • the rivet has a flat end surface and its body is circumferentially concave between its ends.
  • the system also includes a die having a through opening the size and shape of the punching end of the rivet and a punch for driving in the rivet.
  • the die and punch are each provided with lugs for engaging the edges of the aperture stamped by the material so as to cause the materials to flow radially against the concave body of the rivet.
  • a riveting apparatus having an abutment tool and a cooperating rivet punch.
  • the abutment tool carries at its pointing to the rivet end a mandrel whose outer contour corresponds to the inner contour of the tubular rivet in the region of its transition and the adjoining first portion of the neck.
  • the outer contour of the mandrel merges into a flat abutment section.
  • the abutment tool serves the riveting punch as an abutment.
  • the underside of the riveting punch serving to carry out the forming operation carries a precursor mandrel which, like the circular cross-sectional surface of the rivet, is circular.
  • WO 99/49227 describes a tool and method with a lost punch for joining one or more metal plates using the lost punch.
  • the metal plate or the metal plates are deep-drawn or squeezed in a deep-drawn opening of a die in only one operation, so that the displaced material positively connects the lost stamp and fixed to the metal plate or metal plates.
  • the metal plates and the lost stamp are squeezed between a die and a press ram.
  • the press ram has on its side facing the lost stamp on a recess which leads to the lost stamp to a survey.
  • the die in turn, has in the bottom of its deep-drawn opening an annular groove and a recess, which leads to a corresponding design on the underside of the metal plate in the region of the connection point.
  • the setting aid according to the invention is configured for joining devices with a punch and a counter-tool, which can be aligned coaxially with one another and axially movable towards one another for a joining movement relative to one another.
  • the counter-tool of the setting aid according to the invention comprises an at least partially planar counter surface, which is arranged opposite an at least partially flat punch surface of the punch, and a memorable raster mark, which is provided on the counter surface and / or the punch surface, so that the raster mark in a on the counter surface and / or the stamp surface deformed test part can be imprinted.
  • the adjustment aid according to the invention is based on the principle that stamp and counter-tool deform by their movement towards each other to a test part between them.
  • the punch and the counter-tool have an at least partially flat counter-surface and punch surface
  • the impressions of the counter-surface and the punch surface on the test piece can be recognized by this forming process.
  • the impressions of the counter surface and the stamp surface located at the top and bottom of the formed test piece are comparable.
  • the comparison of counter surface and stamp surface provides the information about how far the punch and the counter tool are not coaxially aligned with respect to each other.
  • As a guide in comparing the impressions of counterface and Stamp surface has at least one of the two surfaces on a memorable raster mark.
  • On the basis of this embossed raster marking in the test part compared to at least one further reference point, it can be seen to what extent the ram and / or the counter-tool deviate from a desired coaxiality.
  • the setting aid is provided for a setting device.
  • the counter tool is shaped as a matrix with raster marking to form a closing head.
  • the die has a pot-shaped shape in which the stampable raster marking is arranged at its bottom. So if a test part is deformed into the cup-shaped die, so that forms a closing head, then this grid mark is impressed in one side of the closing head. If one then compares the arrangement or the imprint of the raster marking with an edge region of the closing head, conclusions can be drawn with regard to the arrangement of ram and counter-tool in relation to one another.
  • any desired die can be used as an adjustment aid.
  • an insert plate is inserted into the die.
  • This insert plate has on its flat and the die facing counter surface on the stampable grid mark.
  • the insert plate on its side facing away from the stamp has a shape that is shaped to be complementary to the matrix bottom.
  • the insert plate adapts optimally to the bottom of an existing die and generates a flat counter surface with raster marking, which faces the punch. Now, if a test part between the punch and die deformed with insert plate, then forms in the test part of a closing head with embossed grid mark.
  • the closing head is produced by the punch in combination with a punch rivet or with a test specimen, in which case the punch rivet or the specimen the Form stamp surface.
  • a punch rivet or a test piece to a possibly different design of the closing head, both forming results are interpreted in the same way as adjustment and to assess the coaxiality of the punch and counter tool.
  • the punch rivet set by the punch generates a closing head in the die whose design can be interpreted in combination with the impressed raster marking
  • a similarly interpretable closing head can also be formed with the test body.
  • test specimen likewise forms the test part into the matrix and thereby produces a closing head with an engraved raster marking
  • the counter tool is a sketchmatrize having a freestanding in the direction of the projecting punch projection with the flat counter surface with raster marking and a space surrounding the projection.
  • a closing ring which surrounds the embossed raster marking, is formed on the side of the test part facing the test die.
  • a closing ring which surrounds the embossed raster marking, is formed on the side of the test part facing the test die.
  • the projection has the same outer diameter as the stamp surface of the stamp or like a test piece which forms the stamp surface. Since the test piece is deformed between the punch or the test piece and the projecting projection of the test die, a lock ring is formed on each of opposite sides of the test piece. If one now evaluates the position of the two closing rings in relation to each other, conclusions can be drawn on the coaxial setting of punch and counter-tool in relation to each other.
  • the joining device comprises a holding-down device, with which the test part is compressible or deformable while leaving free a radial clearance around the stamp or around a test body.
  • the test matrix have an annular structure surrounding the projection radially spaced and located opposite the hold-down.
  • test part With the help of the preferred constructions of hold-down and ring-like design of the test matrix, it is possible to hold the test part sufficiently so that the evaluable locking rings and the impressible raster marking form unaffected in the test part. This ensures that the evaluable deformation of the test piece is not distorted by changes in the test piece arrangement.
  • a further preferred embodiment is to provide the stamp surface of the stamp or the test specimen forming the stamp surface with a second stampable raster marking, so that two raster markings arranged opposite one another can be impressed during the joining movement into the test piece.
  • the evaluation is supported, whether the punch and the counter tool are aligned coaxially with each other.
  • the raster marks preferably include orientation markers, as they are aligned with respect to the stamp, these impressed raster markings, although arranged on different sides of the test piece, can be easily interpreted and related.
  • the interpretation can be done by the operator on the basis of visual visual inspection, it is also preferred to record the opposing embossed raster markings on the test piece with the aid of two cameras. Since the image axes of these two cameras are preferably aligned coaxially with one another, the image data captured digitally or analogously can be superimposed in a known manner so as to draw conclusions about the desired coaxiality of punch and counter-tool.
  • orientation aid it is preferable to provide a through hole in the test piece.
  • the orientation of the locking rings, which have been stamped by punch and counter tool on the test part can be in relation to the through hole conclusions about whether the punch and counter tool are set coaxially to each other.
  • raster markings are additionally preferably used on the stamp surface and / or on the counter tool, they allow, in combination with the through bore as orientation aid, a more detailed evaluation of the deformation of the test part and thus the desired coaxiality of punch and counter tool.
  • the present invention also includes an adjustment for a joining device with a punch and a counter tool, which are aligned coaxially to one another and axially movable towards each other for a joining movement, in which the counter tool has a die with a freestanding in the direction of the projecting projection, the one at least partially flat counter surface relative to an at least partially flat stamp surface of the punch comprises, so that two oppositely arranged and evaluable locking rings can be generated on a body by the punch surface and the counter surface during the joining movement.
  • the setting aid described here preferably corresponds to the combination of punch and test matrix already described above, except that here no embossable raster marking is used on the mating surface or the stamp surface. Just embossing each of a locking ring on the opposite sides of the test piece is sufficient to determine the position of the punch and the counter-tool with respect to each other and thus their coaxiality with respect to each other.
  • the mating surface and / or the stamp surface has a raster marking with which a misalignment between the stamp and the counter tool can be additionally determined.
  • the present invention comprises a method for adjusting a joining device with a punch and a counter-tool, which are aligned coaxially with each other and axially movable towards each other for a joining movement relative to each other.
  • the Method comprises the following steps: performing a joining movement with the punch relative to the counter tool such that an at least partially flat counter surface of the counter tool and an at least partially flat punch surface of the punch are impressed in the test part, evaluating the impressed into the test piece counter surface and stamp surface and changing the arrangement of the punch and counter-tool relative to each other to achieve a coaxial alignment of the punch and counter-tool.
  • the method described above is repeated in a plurality of iteration steps in order in this way to approach or adjust an optimum arrangement of punch and die.
  • the method is only applied with punch and counter tool without raster marking, so that the locking rings generated in the test part in the evaluation give evidence for coaxial alignment of punch and counter tool.
  • the counter-tool is formed by the previously discussed die having a flat die surface with a stampable raster mark. If one creates a closing head within the die and impresses the grid mark in the closing head, one can evaluate the embossed grid mark in comparison to the edge region of the closing head. Furthermore, it is preferable to produce the closing rings already mentioned above by means of a die as a counter-tool, which has a freestanding projection projecting in the direction of the punch. Since the punch and the protrusion are arranged free-standing, deforms the material of the test part in a locking ring, which forms a material throw each on the opposite sides of the test part.
  • test part In order to be able to evaluate the deformations achieved on the test part, it is also preferred to capture the two opposite sides of the test part by two cameras aligned coaxially with one another in their image axis and subsequently to evaluate the two image-wise recorded sides of the test part, preferably by the two images be superimposed. This is possible with digital as well as with analog recorded image data. In the context of the evaluation, it is preferably determined to what extent the punch and die differ from one another by an optimal alignment, in particular a coaxial alignment.
  • the present invention is an adjustment aid for joining devices, as they have been initially explained in summary.
  • an at least partially planar counter surface 22 of the counter tool 20 and an at least partially flat punch surface 12 of the punch 10 press against a component, a stack of sheets or another arrangement, which is generally referred to as Test part P is called.
  • the mating surface 22 acting on the test piece P and the stamp surface 12 each generate a closing ring 90, 92 on the test piece P, which are arranged on opposite sides of the test piece P.
  • a stampable raster marking 50; 60 provided on the mating surface 22 and / or the stamp surface 12, so that accordingly the stampable raster marking 50; 60 is impressed in the test part P.
  • Such joining devices are adjustable in the coaxiality of punch 10 and counter-tool 20 with known constructions. According to an alternative, eccentric bushes are used for such a coaxial adjustment, as in DE 197 43 277 A1 is described.
  • a centering sleeve is used for the coaxial adjustment of punch 10 and counter-tool 20 with respect to each other.
  • the centering sleeve is in DE 27 20 126 A1 explained. Due to the well-known adjustment options of stamp 10 and counter tool 20 will not be discussed in detail here.
  • the setting aid according to the invention is explained below using the example of a setting device for setting a rivet N.
  • the setting tool comprises the abovementioned stamp 10 with the stamp surface 12.
  • the stamp 10 is moved in the joining direction F in the direction of a die 20, which forms the counter tool.
  • the die 20 preferably provides in the form of its die bottom 24, the at least partially flat counter surface 22 ready. Therefore, according to one embodiment, a pot-shaped die 20 is used, as exemplified in US Pat Fig. 1 . 2 . 3 and 4 is shown.
  • the preferred cup-shaped die 20 does not have the at least partially planar die bottom 24, this can be realized by means of an insert plate 30.
  • Exemplary shows Fig. 3 the cup-shaped die 20 with an arched die bottom 24 thus a non-planar counter surface 22.
  • the insert plate 30 is arranged such that a complementary to the die bottom 24 shaped underside 34 of the insert plate 30 faces the die bottom 24. Due to this complementary design of insert plate 30 and die 20 creates a reliable hold between insert plate 30 and die 20. In this case, the punch 10 facing side 32 of the insert plate 30 is formed flat to form the counter surface 22 against the die surface 12.
  • the punch 10 sets the rivet N in the test part P via its stamp face 12. During the joining movement of the stamp 10 in the joining direction F, the rivet N and the test piece P are reshaped or formed in the cup-shaped die 20, wherein a closing head 40 formed.
  • the punch 10 and the die 20 are aligned coaxially with each other, as the common axis of symmetry S in the joining direction F emphasizes. Due to the coaxial alignment of the punch 10 and the die 20, the rivet N is deformed uniformly and it forms preferably a symmetrical to the symmetry axis S symmetrical closing head 40 from. This closing head 40 preferably completely fills the pot-shaped die 20.
  • Fig. 2 How to get by Fig. 2 can recognize the punch 10 and the die 20 are not aligned coaxially with each other. During the joining movement of the punch 10 in the joining direction F of the rivet N is not deformed uniformly, as just using the Figures 2d and 2e is recognizable. Also, the closing head 40 is formed asymmetrically and does not completely fill the die 20, as the schematic representation in Fig. 2d highlights.
  • the rivet N is placed in the test piece P.
  • the setting head 40 is formed.
  • a grid mark 52 is impressed in the setting head 40.
  • Any pattern of regular points and / or lines can be used as a raster marking, which allows an evaluation of the impressed raster marking 52 in relation to a reference point or to a reference line.
  • the stampable grid mark 50 is embossed in the bottom 42 of the setting head 40.
  • the impressed raster marking 52 is therefore evaluable with respect to an outer edge 44 of the setting head 40 and / or a reference bore in the test part P and / or with respect to a further raster marking 62 on the side of the test part P facing the ram 10.
  • the stampable raster mark 50; 60 an orientation marker 54; 64 on.
  • the orientation marker 54; 64 is aligned with a fixed reference point on the setting tool, so that based on the stamped in the test part grid mark 52; 62 is always recognizable, in which orientation the embossed grid mark 52; 62 with respect to the fixed reference point.
  • the additional stampable raster marking 60 on the stamp surface 12 or on a stamp side facing away from 72 of a test piece 70 (see Fig. 10 ). If the test piece 70 is set instead of the rivet N, the side 72 of the test piece 70 impresses the further raster marking 62 into the test piece P. To determine the coaxial alignment of punch 10 and die 20 are thus present on opposite sides of the test part P raster markings 52; 62 evaluable.
  • the stampable raster marking 50; 60 preferably consists of a pattern that leaves after a forming process of the test part P between the punch 10 and counter-tool 20 a complementary to the pattern shaped pattern imprint on the test part P. Therefore, under the stampable raster mark 50; 60 referred to the surrounding area raised pattern or recessed patterns and color and stamp-like transferable pattern understood.
  • the die bottom 24 preferably has a stampable raster marking 50, which consists of a structure sunk into the ground, that is to say recessed, (see FIG Fig. 4 ).
  • the raster marking 50 is also provided on the surface 32 of the insert plate 30 (not shown). If, during a joining operation of the punch 10, the setting head 40 is produced in the die 20, the raster marking 50 becomes in the bottom 42 of the setting head 40 impressed. This is in the FIGS. 7 and 8 each illustrating a schematic plan view of the bottom 42 of the setting head 40 against the joining direction.
  • the edge region 46 which is recognizable as a ring, surrounds the impressed raster marking 52.
  • the ring 46 identifies the transitional region between the flat bottom 42 of the setting head 40 and its edge 44 projecting in the direction of the ram 10.
  • the edge 44 of the closing head 40 is based on FIG radially outermost, dark line in the FIGS. 7 and 8 recognizable.
  • the concentrically arranged rings of the raster marking 52 are uniformly spaced radially from the ring 46 in the circumferential direction.
  • edge region 46 has an approximately constant width in the circumferential direction. This shows that the punch has deformed the test part in the center of the matrix with raster marking, so that the closing head could form radially symmetrical. As a result, the coaxial alignment of punch 10 and die 20 is confirmed to each other.
  • a plurality of closing heads 40 for example 4-20, more preferably 6-10 produced, and evaluated accordingly in order to make a reliable assessment of the coaxiality of punch 10 and die 20 can.
  • the coaxial rings of the embossed grid mark 52 are not evenly spaced from the edge region 46 of the setting head 40.
  • the grid mark 52 is not centrally located on the bottom 42 of the closing head 40.
  • Fig. 8 highlights that the transition region 46 between bottom 42 and edge 44 of the closing head 40th is formed non-uniformly in the circumferential direction and preferably has a varying radial width.
  • the raster marking 50 of the die bottom 24 or the insert plate 30 is only impressed out of the center of the setting head 40 and there recognizable. Therefore, the concentric rings of the embossed grid mark 52 are unevenly spaced from the ring 46, ie the transition region to the edge 44 of the setting head 40. In addition, the embossed grid mark 52 is not completely imaged on the bottom 42 of the setting head 40, because the die 20 has not been completely filled with the material of the test piece P. It also follows that the ring 46 along the circumferential direction of the setting head 40 has a variable radial width. In contrast, with coaxial aligned punch 10 and die 20, the radial width of the transition region or ring 46 is constant.
  • Fig. 8 is the top view of the setting head 40 against the joining direction F.
  • the worker recognizes using the locking head 40 shown here, the punch 10 at least in the direction of arrows R and U must be repositioned to a coaxial arrangement of punch 10 and die 20 to achieve.
  • the orientation of punch 10 and die 20 can be evaluated again on the basis of the position of the impressed raster marking 52 and of the ring 46 surrounded. This procedure is repeated until an optimal axial alignment between punch 10 and die 20 is present.
  • the setting head 40 it is also preferred to create the setting head 40 by means of a test piece 70 which forms the stamp face 72.
  • the surface 72 of the test piece 70 has the second stampable raster marking 60.
  • the setting head 40 After completion of the joining operation, the setting head 40 has an embossed raster marking 52, 62 on its sides arranged opposite one another. Both raster markings 52, 62 are produced by the worker, for example, with respect to the edge of the test piece P, with respect to that set by the setting head 40 formed reference point, evaluated by any other reference point or based on the judgment of the worker. there the second raster marking 62 to the setting head 40 with raster marking 52 is a helpful supplement to be able to evaluate the alignment between punch 10 and die 20 even more precisely.
  • the opposite sides of the test piece P are imaged with two cameras K1, K2 whose image axes B are aligned coaxially with each other.
  • the coaxial alignment of the image axis B of the two cameras K1, K2 ensures that the captured image data can be reproduced in their actual arrangement with respect to each other.
  • the figuratively recorded pages of the test piece P can be detected by analog and digital cameras. Accordingly, the evaluation of the imaged data then takes place with known analog or digital image processing technology. Thus, for example, it is preferred to arrange the digitally captured image data in an image processing program corresponding to the coaxially arranged image axes one above the other. If the raster marking 52 overlap the closing head 40 and the raster marking 62 produced by the side 72 of the test body 70, then the ram 10 and the die 20 are aligned coaxially with one another. The same applies to the covering or a coaxial arrangement of two closing rings, which can be generated by a die and the stamp 10 with or without test specimen 70, as explained in more detail below.
  • the punch 10 is used in combination with a die 80, which has a freestanding in the direction of punch 10 projecting projection 82.
  • the projection 82 is surrounded by a free space or a free volume, so that a deformation of the test part P is fully possible.
  • the stamp 10 is arranged free-standing, so surrounded by a free space or a free volume.
  • a punch-side closing ring 90 and a die-side closing ring 92 are formed (see FIGS Fig. 9-11 ). If the symmetry axes S of the punch 10 and of the projection 82 are aligned coaxially with respect to one another, then the closing rings 90, 92 are arranged one above the other (cf. Fig. 10b ). In a non-coaxial arrangement of the axes of symmetry S of the punch 10 and the projection 82, the locking rings 90, 92 arranged laterally offset from each other, such as Fig. 9 and 10a show.
  • the locking rings embossed in the test part can be evaluated with the evaluation possibilities already described above.
  • the raster marking 50; 60 impress.
  • the test body 70 is used, which has the grid mark 60 on its side 72 facing the test piece P.
  • a hold-down device 16 is preferably used in combination with a ring adapter 18 (see. Fig. 11 ).
  • the ring adapter 18 presses radially spaced to the punch 10 on the test piece P to fix the test piece P and at the same time the required clearance for the stamp 10th provide.
  • the projection 82 is preferably surrounded by a ring-like structure 84 which acts on the test piece P in relation to the ring adapter 18. During a joining process, the closing rings 90, 92 can thus form on both sides unhindered, while the test piece P is fixed between the ring adapter 18 and the ring-like structure 84.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Insertion Pins And Rivets (AREA)
  • Credit Cards Or The Like (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Claims (16)

  1. Aide d'ajustement pour un dispositif d'assemblage comprenant un poinçon et un contre-outil, qui sont orientables coaxialement l'un par rapport à l'autre et déplaçables entre eux axialement l'un vers l'autre afin d'assurer un mouvement d'assemblage, dans laquelle
    le contre-outil est conçu comme une matrice (20) en forme de cuvette dotée d'un fond de matrice (24) pour constituer une tête de fermeture (40), qui comprend une contre-surface au moins en
    partie plane, qui est disposée en vis-à-vis d'une surface du poinçon au moins en partie plane, et
    un quadrillage imprégnable est prévu à la contre-surface de la matrice (20) ou à la contre-surface (22) de la matrice (20) et de la surface de poinçon, si bien que le quadrillage est imprégnable dans une pièce d'essai mise en forme au niveau de la contre-surface ou de la contre-surface et de la surface de poinçon.
  2. Aide d'ajustement selon la revendication 1, dans laquelle la contre-surface (22) en partie plane de la matrice (20) est formée par le fond de matrice (24) ou la matrice présente une plaque intercalaire (30),
    qui fournit la contre-surface plane avec un quadrillage.
  3. Aide d'ajustement selon la revendication 2, dans laquelle la plaque intercalaire (30) est formée au niveau d'une face opposée au poinçon en complément d'un fond de matrice (24).
  4. Aide d'ajustement selon la revendication 1, dans laquelle la contre-surface plane dotée d'un quadrillage fait directement partie de la matrice.
  5. Aide d'ajustement selon la revendication 1, dans laquelle la tête de fermeture peut être fabriquée par le poinçon en combinaison avec un rivet auto-poinçonneur ou avec une éprouvette, qui forme respectivement la surface de poinçon.
  6. Aide d'ajustement selon la revendication 1, dans laquelle le contre-outil est une matrice d'essai, qui présente un épaulement isolé dépassant en direction du poinçon avec la contre-surface plane dotée d'un quadrillage ainsi qu'un espace libre entourant l'épaulement.
  7. Aide d'ajustement selon la revendication 6, dans laquelle la contre-surface plane dotée d'un quadrillage forme une face de l'épaulement tournée vers le poinçon et l'épaulement présente le même diamètre extérieur que la surface du poinçon ou qu'une éprouvette, qui forme la surface de poinçon.
  8. Aide d'ajustement selon la revendication 6 ou 7, dans laquelle le dispositif d'assemblage comprend un serre-flan, avec lequel la pièce d'essai est compressible en laissant un espace libre radial autour du poinçon ou d'une éprouvette.
  9. Aide d'ajustement selon la revendication 8, dans laquelle la matrice d'essai présente une construction annulaire, qui entoure l'épaulement en étant espacée radialement et est disposée en vis-à-vis du serre-flan.
  10. Aide d'ajustement selon la revendication 6, dans laquelle la surface du poinçon ou une éprouvette, qui forme la surface de poinçon, présente un second quadrillage imprégnable, si bien que deux quadrillages disposés en vis-à-vis sont imprégnables dans la pièce d'essai durant le mouvement d'assemblage.
  11. Aide d'ajustement selon la revendication 10, dans laquelle la pièce d'essai présente un trou débouchant, qui peut être disposé comme moyen d'orientation entre le poinçon et la contre-surface.
  12. Aide d'ajustement pour un dispositif d'assemblage comprenant un poinçon et un contre-outil, qui sont orientables coaxialement l'un par rapport à l'autre et déplaçables entre eux axialement l'un vers l'autre afin d'assurer un mouvement d'assemblage, dans laquelle
    le contre-outil présente une matrice (80) dotée d'un épaulement (82) isolé dépassant en direction du poinçon, qui est entouré par un volume libre, si bien qu'une déformation de la pièce d'essai P est possible sans aucune restriction et qui englobe une contre-surface au moins en partie plane en vis-à-vis d'une surface du poinçon au moins en partie plane, si bien qu'une bague de fermeture (92) du côté de la matrice est imprégnable dans la pièce d'essai P, dans laquelle la contre-surface et/ou la surface de poinçon présente un quadrillage, à l'aide duquel un désalignement entre le poinçon et le contre-outil peut être déterminé, et dans laquelle le poinçon est disposé isolément entouré par un volume libre, si bien qu'une déformation de la pièce d'essai P est possible sans aucune restriction et qu'une bague de fermeture (90) du côté du poinçon est imprégnable dans la pièce d'essai P,
    si bien que deux bagues de fermeture disposées en vis-à-vis et analysables peuvent être générées sur la pièce d'essai P par la surface de poinçon et la contre-surface durant le mouvement d'assemblage.
  13. Procédé de réglage du dispositif d'assemblage doté d'un poinçon et d'un contre-outil qui sont orientables coaxialement l'un par rapport à l'autre et déplaçables entre eux axialement l'un vers l'autre afin d'assurer un mouvement d'assemblage, dans lequel le procédé présente les étapes suivantes :
    exécuter un mouvement d'assemblage à l'aide du poinçon par rapport au contre-outil de telle sorte qu'une contre-surface du contre-outil au moins en partie plane et une surface du poinçon au moins en partie plane sont imprégnées dans une pièce d'essai, et
    imprégner un quadrillage sur au moins une face de la pièce d'essai, vu que la contre-surface et/ou la surface de poinçon présente le quadrillage imprégnable,
    analyser la contre-surface et la surface de poinçon imprégnées dans la pièce d'essai et modifier la disposition du poinçon et du contre-outil l'un par rapport à l'autre pour parvenir à un alignement coaxial du poinçon et du contre-outil.
  14. Procédé selon la revendication 13, dans lequel le contre-outil est une matrice dotée d'une surface de matrice plane avec un quadrillage imprégnable et comportant l'étape :
    générer une tête de fermeture à l'intérieur de la matrice et imprégner le quadrillage dans la tête de fermeture et
    analyser le quadrillage imprégné en comparaison de la périphérie de la tête de fermeture.
  15. Procédé selon la revendication 13, dans lequel le contre-outil est une matrice dotée d'un épaulement isolé dépassant en direction du poinçon, qui présente la contre-surface en vis-à-vis de la surface du poinçon, et comportant l'étape :
    exécuter le mouvement d'assemblage à l'aide de la surface de poinçon par rapport à la contre-surface de telle sorte qu'une bague de fermeture se forme respectivement sur les faces en vis-à-vis de la pièce d'essai, qui sont analysables.
  16. Procédé selon l'une des revendications 13 à 15, comportant l'autre étape :
    enregistrer sous forme d'images les deux faces en vis-à-vis de la pièce d'essai au moyen de deux caméras orientées coaxialement l'une par rapport à l'autre dans leur axe de prise de vue et analyser les deux faces de la pièce d'essai enregistrées sous forme d'images.
EP14726908.8A 2013-06-04 2014-05-15 Aide d'ajustement pour un dispositif d'assemblage comprenant un poinçon et un contre-outil ainsi que procédé de réglage du dispositif d'assemblage Not-in-force EP3003598B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013210370.0A DE102013210370A1 (de) 2013-06-04 2013-06-04 Einstellhilfe für eine Fügeeinrichtung mit einem Stempel und einem Gegenwerkzeug sowie ein Verfahren zum Einstellen der Fügeeinrichtung
PCT/EP2014/060017 WO2014195107A1 (fr) 2013-06-04 2014-05-15 Aide d'ajustement pour un dispositif d'assemblage comprenant un poinçon et un contre-outil ainsi que procédé de réglage du dispositif d'assemblage

Publications (2)

Publication Number Publication Date
EP3003598A1 EP3003598A1 (fr) 2016-04-13
EP3003598B1 true EP3003598B1 (fr) 2019-05-08

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US (1) US9968987B2 (fr)
EP (1) EP3003598B1 (fr)
CN (1) CN105283257B (fr)
DE (1) DE102013210370A1 (fr)
WO (1) WO2014195107A1 (fr)

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US11499581B2 (en) 2018-03-20 2022-11-15 Ford Global Technologies, Llc Surface features for locating net substrate buttons to enable self-piercing riveting (SPR) on brittle and low toughness materials
JP7182989B2 (ja) * 2018-10-12 2022-12-05 株式会社アーレスティ 接合体の製造方法および板状部材の品質管理方法

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Also Published As

Publication number Publication date
CN105283257A (zh) 2016-01-27
CN105283257B (zh) 2017-11-17
DE102013210370A1 (de) 2014-12-04
US20160107223A1 (en) 2016-04-21
WO2014195107A1 (fr) 2014-12-11
EP3003598A1 (fr) 2016-04-13
US9968987B2 (en) 2018-05-15

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