EP0366987B1 - Dispositif pour joints à mi-fer - Google Patents
Dispositif pour joints à mi-fer Download PDFInfo
- Publication number
- EP0366987B1 EP0366987B1 EP89118946A EP89118946A EP0366987B1 EP 0366987 B1 EP0366987 B1 EP 0366987B1 EP 89118946 A EP89118946 A EP 89118946A EP 89118946 A EP89118946 A EP 89118946A EP 0366987 B1 EP0366987 B1 EP 0366987B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- die
- anvil
- edge members
- metal
- cutting parts
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000005304 joining Methods 0.000 claims description 8
- 230000035515 penetration Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 description 32
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000011324 bead Substances 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
- B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53709—Overedge assembling means
- Y10T29/53717—Annular work
- Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
- Y10T29/53765—Annular work with second workpiece inside annular work one workpiece moved to shape the other including near side fastener shaping tool
Definitions
- the invention relates to a device for clinching with the features mentioned in the preamble of claim 1.
- the term enforcement is described in DIN 8593, Part 5, Ord.No. 4.5.2.11 defined.
- a more detailed description was published in "bands Plates Tubes” 4/1988, entitled “Technical aspects of the production pressure joining” by Liebig / Bober.
- the one-step process the sheets are pushed through by the punch through the cutting parts of the die and then spread between the punch and the anvil, the cutting parts springing laterally.
- the two-stage process the cutting parts remain and the anvil moves towards the punch under its own power, lifting the material that has passed through from the cutting parts.
- the two-stage process can only be carried out with a double-acting press, so that the one-stage would be preferable.
- the document DE-A-3713083 discloses a joining device with the features mentioned in the preamble of claim 1.
- the cutting parts are pivotally mounted relative to the anvil, so that their lateral evasive movement also has a component counter to the direction of advance of the punch.
- the object of the invention is to provide a device of the same type, in which the mode of operation of the two-stage method is achieved with a single stroke of a single-acting press, that is to say “in one stage”.
- the anvil is not moved onto the stamp relative to the stationary cutting parts, but the cutting parts deflect, not laterally, but in the direction of the stamp movement (which, of course, is not an additional lateral component excludes).
- the depth of penetration of the stamp can be chosen to be so small that the spreading of the stamp-side sheet partly takes place at the level of the die-side sheet, which results in optically more beautiful joints with increased strength; wipers are only required in exceptional cases; Chips, oil or dirt cannot collect; a high fatigue strength of the die is guaranteed.
- FIG. 1 comprises a base 10, on which an anvil 12 is molded or in which the anvil is inserted.
- the free face of the anvil ' is circular. Otherwise, the top of the base provided with roof surfaces 14 sloping obliquely outwards.
- Each cutting part has a semi-cylindrical recess 18, and the two recesses enclose the anvil 12 in the rest position.
- a lamella 20 made of spring steel is fastened to the base at 22 and overlaps an associated cutting part with retaining tongues 24, which for this purpose on both sides of the semi-cylindrical recess has a gradation 26. In this way, the two cutting parts are captive, but are movably connected to the base and thus also to the anvil.
- the stamp 30 has a conical shape which tapers in the direction of a likewise circular end face 32.
- the working diameter of this stamp face is significantly smaller than that of the anvil 'or the recesses in the cutting parts, such that the sheets 34 and 36 lying one above the other are not cut through when they are pushed through (the invention can, however, also be used in the case of a cutting punch and die design).
- Fig. 2 shows the starting position. The sheets rest on the cutting parts, the stamp is centered with respect to the anvil 'in the press (not shown).
- Fig. 3 shows the situation after enforcement.
- the stamp has deformed material of both sheets into the cavity delimited by the semi-cylindrical recesses 18 and the end face of the anvil '12 until a collar 38 surrounding the punch is seated on the sheet 34.
- the dimensions are such that there is already a slight deformation of the material passed through in the direction parallel to the sheets.
- the angle at which the cover surfaces 14 run against the horizontal is chosen in this way; that the static friction between them and the Seated cutting parts in conjunction with the pretension of the spring lamellae is sufficient to prevent the cutting parts from escaping when being pushed through; it has been shown that the forces acting laterally are surprisingly low when enforced. However, as soon as the transverse forces that occur during spreading take effect, the cutting parts move laterally and, because of the downward slope, in the direction of the punch movement, since the lower sliding friction is then insufficient to hold the cutting parts.
- Fig. 4 shows the end of the joining process.
- the material of both sheets is reduced between the end faces of the anvil and the punch to about a third of the initial thickness, and the displaced material has flowed laterally over the edge of the anvil end face and thus forms a bead 40, the material of the punch-side sheet 34 flowing into the bead and clings there.
- the joint produced with the tool set according to FIGS. 1 to 4 has good strength properties both in the direction parallel to the sheet metal planes and in the direction perpendicular to it. In contrast, the strength against twisting may be insufficient, so that it is advisable to place two joints next to each other;
- Fig. 5 shows a die that enables simultaneous joining at two points in a press stroke (with a corresponding double punch, not shown).
- the components corresponding to FIG. 1 are marked with the same reference numerals, so that a further explanation can be omitted.
- the construction according to FIG. 1 or 5 may be too high; one can then modify the die as shown in FIG. 6: instead of downwards, the base 10 unloads laterally, where it has a fastening hole 42, and the spring lamellae 20 are riveted to this base projection at 44.
- the exemplary embodiments described so far are based on the frictional engagement between the base and the cutting parts.
- the coefficient of friction is, among other things, depending on the surface properties of the friction-mated parts and therefore not necessarily reproducible.
- the cutting parts 16 with protruding edges 46 sit on a corresponding radial shoulder 48 of the anvil '. 1 to 6 is force-dependent, it is path-dependent in FIG. 7, because only when the expanding material "sheds" the cutting parts can they deflect downwards.
- the design of the stamp and the return spring lamellae can take place as in the exemplary embodiments described first, so that these components have not been redrawn. It goes without saying that this principle of triggering can also be used in the other illustrated exemplary embodiments.
- the cutting parts are simply prismatic, and the punch has a correspondingly elongated shape (here too, the return spring lamellae are not shown; reference is made to the other exemplary embodiments).
- This tool set has the advantage over the other embodiments that the press does not necessarily have to act perpendicular to the anvil surface, but may have an offset of up to 30 ° on both sides in the plane parallel to the cutting edges 50 and nevertheless a useful joint is produced; This is particularly important when more complicated workpieces in a complete tool are to be provided with a large number of joints in a single press stroke.
- Fig. 9 shows, enlarged compared to Fig. 8, a view in the direction of arrow "9" in a modified embodiment.
- the slideway of the cutting parts and their sliding surfaces are provided with grooves parallel to the sliding direction, which in addition to the static friction also have a certain wedging effect and thus the release force make it more reproducible. This measure can also be used equally in the previously described exemplary embodiments.
- the 10 and 11 has four cutting parts 16, each of which is assigned its own flat slideway 52.
- the base and anvil are cylindrical.
- the base has a screwed-in groove 54, into which a wire spring 56 is blown; a leg extends upward from it and forms an open ring which engages in corresponding grooves in the cutting parts. This ring acts as a return spring for the cutting parts.
- Fig. 12 shows schematically and greatly enlarged compared to the previous figures, a construction in which the cutting part 16 not only rests on a radial support surface, as in Fig. 7, but wedges positively with the anvil at 60. It has been shown that the expanding material also triggers the cutting parts here, the tripping being very reproducible. It is understood that a plurality of such "claws" can be provided along the guideway 62. As in FIGS. 7 and 8, the return spring plate is also not shown here.
- the punch 30 has a recessed groove 70, into which a bead 72 of a slotted ring 74 is injected.
- the ring is so massive that when it is seated on the metal sheets to be joined, it spreads very little resiliently by its inner cone 76 sliding along the cone section 78 of the stamp. During the press return stroke, it then throws the workpiece off the punch. It goes without saying that one is different May provide types of wipers, such as those that are independent of the federal government 38.
- the actual stamp has a radial flange 80 which is guided in a sleeve 82 provided with the collar 38.
- the sleeve is screwed onto a stamp carrier 84.
- a package of disc springs 86 is clamped between this and the flange 80;
- Disc springs are known to have a negative path-force characteristic curve, so that when a load specified by the dimensioning of the springs is reached, the stamp springs back suddenly.
- the principle of the slotted spring washer shown in FIGS. 13 and 14 is also applicable to the die.
- the cutting parts 16 can be combined into a single slotted ring, while the separate return spring 56 is omitted.
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Air Bags (AREA)
- External Artificial Organs (AREA)
- Massaging Devices (AREA)
- Press Drives And Press Lines (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Sealing Devices (AREA)
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89118946T ATE72152T1 (de) | 1988-10-29 | 1989-10-12 | Durchsetzfuegevorrichtung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3836937A DE3836937A1 (de) | 1988-10-29 | 1988-10-29 | Durchsetzfuegevorrichtung |
DE3836937 | 1988-10-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0366987A1 EP0366987A1 (fr) | 1990-05-09 |
EP0366987B1 true EP0366987B1 (fr) | 1992-01-29 |
Family
ID=6366188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89118946A Expired - Lifetime EP0366987B1 (fr) | 1988-10-29 | 1989-10-12 | Dispositif pour joints à mi-fer |
Country Status (8)
Country | Link |
---|---|
US (1) | US4972565A (fr) |
EP (1) | EP0366987B1 (fr) |
JP (1) | JP2515894B2 (fr) |
AT (1) | ATE72152T1 (fr) |
CA (1) | CA2001636C (fr) |
DE (2) | DE3836937A1 (fr) |
ES (1) | ES2030573T3 (fr) |
RU (1) | RU1773238C (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5230136A (en) * | 1992-05-04 | 1993-07-27 | Savair Inc. | Punch and die set for sheet metal clinching |
ES2212024T3 (es) * | 1996-10-09 | 2004-07-16 | ECKOLD GMBH & CO. KG | Matriz de union por embuticion. |
DE29700868U1 (de) * | 1997-01-21 | 1997-05-15 | Avdel Verbindungselemente GmbH, 30851 Langenhagen | Vorrichtung zum Durchsetzfügen |
DE19847794C1 (de) * | 1998-10-16 | 1999-08-19 | Eckold Ag | Vorrichtung zum mechanischen Fügen flächig aufeinanderliegender Bleche durch Umformen |
GB2334474B (en) * | 1999-05-19 | 2000-01-19 | Colin Maxwell Wade | Ductile material clinch joiner |
US6430794B1 (en) | 2000-05-17 | 2002-08-13 | Mckee James E. | Female crimping die and system for crimping metal sheets |
US7150086B2 (en) * | 2001-04-04 | 2006-12-19 | Eugen Rapp | Tool that connects pieces through a process of riveting |
ATE465829T1 (de) * | 2007-02-13 | 2010-05-15 | Inventio Ag | Verfahren und werkzeug zum clinchen von dickblechen, sowie verwendung des werkzeugs |
US8650730B2 (en) | 2009-02-23 | 2014-02-18 | Btm Corporation | Clinching tool |
DE102009003655B4 (de) * | 2009-03-23 | 2012-01-19 | Thyssenkrupp Steel Europe Ag | Verfahren zum Herstellen einer Blechplatine, sowie eine Blechplatine und das Umformwerkzeug zum Herstellen eines Bleches mit einem Dickenübergang an einer Verbindungskante |
SE0900538A1 (sv) * | 2009-04-22 | 2010-05-25 | Hans Bergkvist | Anordning för sammanfogning av två eller fler överlappande materialdelar och förfarande för tillverkning av anordningen |
US10328481B2 (en) | 2014-03-18 | 2019-06-25 | Btm Company Llc | Clinching punch and apparatus |
DE102017116560A1 (de) * | 2017-07-21 | 2019-01-24 | Tox Pressotechnik Gmbh & Co. Kg | Vorrichtung zum Fügen eines Werkstücks |
US11577865B2 (en) | 2019-12-06 | 2023-02-14 | Deere & Company | Integrated wrapping system for large square baler |
US11446726B2 (en) * | 2020-05-14 | 2022-09-20 | BTM Company, LLC | Metal fastening die assembly |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1602494A1 (de) * | 1967-08-05 | 1970-12-10 | Licentia Gmbh | Werkzeug,insbesondere zum Biegen und Umformen von Blechen unter Anwendung einer in einem Koffer auf Unterstuetzungen ruhenden elastischen Einlage |
US3763687A (en) * | 1972-03-14 | 1973-10-09 | Sumitomo Metal Ind | Apparatus for correcting strains in stamp-forgings |
DE2948915C2 (de) * | 1979-12-05 | 1988-06-16 | Degussa Ag, 6000 Frankfurt | Lotlegierungen zum direkten Auflöten von oxidhaltigen Silberkontakten auf Kontaktträger |
US4459735A (en) * | 1980-09-08 | 1984-07-17 | Btm Corporation | Joining sheet metal |
US4757609A (en) * | 1980-09-08 | 1988-07-19 | Btm Corporation | Apparatus for joining sheet material |
GB2087284B (en) * | 1980-09-08 | 1984-06-06 | Btm Corp | Apparatus for and method of joining sheet metal and sheet metal so joined |
EP0077932B1 (fr) * | 1981-10-28 | 1984-12-27 | WALTER ECKOLD GmbH & Co. KG Vorrichtungs- und Gerätebau | Dispositif pour assembler des tôles par une jonction similaire à une rivure |
DE8408795U1 (de) * | 1984-03-22 | 1985-07-18 | Walter Eckold GmbH & Co KG Vorrichtungs- und Gerätebau, 3424 St Andreasberg | Vorrichtung zum Verbinden eines Blechs mit einem perforierten Blech |
EP0155619B1 (fr) * | 1984-03-22 | 1990-01-17 | Gerd-Jürgen Eckold | Procédé pour réaliser des liaisons de tôles |
US4726000A (en) * | 1985-04-20 | 1988-02-16 | Diehl Gmbh & Co. | Timepiece |
DE3679364D1 (de) * | 1985-09-14 | 1991-06-27 | Eugen Rapp | Verfahren und vorrichtung zum verbinden duenner platten. |
US4803767A (en) * | 1986-08-29 | 1989-02-14 | Lamb Robo | Clinching tool |
-
1988
- 1988-10-29 DE DE3836937A patent/DE3836937A1/de not_active Withdrawn
-
1989
- 1989-10-12 EP EP89118946A patent/EP0366987B1/fr not_active Expired - Lifetime
- 1989-10-12 AT AT89118946T patent/ATE72152T1/de not_active IP Right Cessation
- 1989-10-12 DE DE8989118946T patent/DE58900799D1/de not_active Expired - Lifetime
- 1989-10-12 ES ES198989118946T patent/ES2030573T3/es not_active Expired - Lifetime
- 1989-10-23 US US07/425,670 patent/US4972565A/en not_active Expired - Lifetime
- 1989-10-27 RU SU894742351A patent/RU1773238C/ru active
- 1989-10-27 CA CA002001636A patent/CA2001636C/fr not_active Expired - Fee Related
- 1989-10-30 JP JP1280001A patent/JP2515894B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2515894B2 (ja) | 1996-07-10 |
CA2001636A1 (fr) | 1990-04-29 |
CA2001636C (fr) | 1995-06-06 |
US4972565A (en) | 1990-11-27 |
EP0366987A1 (fr) | 1990-05-09 |
RU1773238C (ru) | 1992-10-30 |
DE58900799D1 (de) | 1992-03-12 |
JPH02155524A (ja) | 1990-06-14 |
DE3836937A1 (de) | 1990-05-03 |
ES2030573T3 (es) | 1992-11-01 |
ATE72152T1 (de) | 1992-02-15 |
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