EP0715910A1 - Connection pour bords de tÔle et son procédé et appareil - Google Patents

Connection pour bords de tÔle et son procédé et appareil Download PDF

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Publication number
EP0715910A1
EP0715910A1 EP95107161A EP95107161A EP0715910A1 EP 0715910 A1 EP0715910 A1 EP 0715910A1 EP 95107161 A EP95107161 A EP 95107161A EP 95107161 A EP95107161 A EP 95107161A EP 0715910 A1 EP0715910 A1 EP 0715910A1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
hole
tab
connection according
metal layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95107161A
Other languages
German (de)
English (en)
Other versions
EP0715910B1 (fr
Inventor
Peter Hardt
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.)
Schmolz and Bickenbach KG
Original Assignee
Schmolz and Bickenbach KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schmolz and Bickenbach KG filed Critical Schmolz and Bickenbach KG
Publication of EP0715910A1 publication Critical patent/EP0715910A1/fr
Application granted granted Critical
Publication of EP0715910B1 publication Critical patent/EP0715910B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—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 compound according to claim 1, a method according to claim 28 and a device according to claim 48.
  • Spot welding is difficult with very thick sheets, just as with very thin sheets. Transformers are required. With the same technology you are not able to connect sheets of different materials. For example, aluminum sheets cannot be welded. Is the pressure the If the spot welding gun is not large enough, the connection of the spot welding points to one another is not particularly intimate. Spot welding three or four layers of different materials is difficult. In order to score spot sweat, the electrical connection value must be of a certain size so that the electrical network does not break down. Spot welding tubular structures is extremely difficult or even impossible. A spark shower often occurs during spot welding. Spot welding systems are noisy during operation. To connect even straight sheet metal edges with each other requires a lot of equipment. Depending on the material, the welding electrodes must be made of a special material, etc.
  • the object of the invention is to provide a connection, a method for producing the connection and a device suitable for this purpose, with which a connection can be established very flexibly, quickly, at low cost, without great expenditure on equipment, quietly, with little loss nevertheless gives dynamic and / or statically excellent values with regard to the area, the section modulus, the moment of inertia etc., for the most varied sheet thicknesses, such as already gives good results in a test of 0.5 mm to 2 mm sheet steel, can be used for the most varied types of material , the connection of at least two sheet layers permitted, is aesthetically perfect, is environmentally friendly and is able to leap forward the technology of the connections of this kind.
  • the fifth has an endless profile 11 made of galvanized sheet steel. It has approximately a rectangular cross section with a bottom wall 12, two side walls 13, 14 and one Top wall 16.
  • the steel sheet has a thickness of 0.88 mm, is galvanized and comes from a coil.
  • the corners 17, 18, the knees 19 and the corners 21, 22 are successively bent.
  • an S-shaped offset 23 is already provided there, so that the upper side 24 of a first sheet metal layer 26 is flush with the upper side 27 of the second sheet metal layer 28 and, in this respect, a continuously flat surface can arise to the outside.
  • the right edge 29 of the first sheet metal layer 26 lies in the osculation of the offset 23.
  • the left edge 31 lies approximately 10 mm further to the left in the exemplary embodiment according to FIG.
  • the additional coil width is only 10 mm with a profile of about 37 x 47 mm.
  • the profile 11 does not yet have the figure shown in FIG. 5. Rather, the side walls 13, 14 are still V-shaped upwards apart and the right edge 29 is still a considerable distance from the left edge 31, as is often the case with profiling lines in a certain state of profiling.
  • an arm 32 reaches downward, which at its lower end merges into a horizontal rod 33 which can be loaded on a pull directed to the right.
  • the horizontal rod 33 is stationary, while the profile 11 moves in the direction of the arrow 34.
  • the rod 33 has an external thread 36 onto which an adjusting nut 37 is screwed.
  • the adjusting nut 37 prevents a fitting 38 from moving further to the right, which is crossed by the rod 33.
  • the rod 33 passes through a coaxial pressure tube 39, which is supported with its right edge on the fitting 38 and with its left edge on the fitting 41, which is also traversed by the rod 33.
  • the fitting 41 belongs to a piercing cutting station 42 and the fitting 38 belongs to a joining station 43. Both stations are clearly spatially separated from one another here. However, they could also be combined and equally well divided into several stations. For example, the piercing cutting station 42 could be divided into two different stations, one of which only cuts and the other only bends open.
  • the profile 11 comes from the left in the shape shown in FIG. 5, but still without the holes 44, 46, 47, 48 arranged in sequence, which form a linearly arranged row of holes. All holes have the same Shape. Analogous to the sewing machine principle, the holes could also lie on a single or double curved curve and / or - depending on the purpose - could have different shapes.
  • the first sheet metal layer 26 lies on the second sheet metal layer 28 and the right edge 29 lies in the crank 23.
  • the bottom wall 12 slides with friction on an essentially stationary counter surface 49 1 The distance drawn for the sake of clarity does not really exist.
  • the shaped piece 41 is supported on the bottom wall 12 from above and, because it lies indirectly on the counter surface 49, cannot be pressed downward.
  • the fitting 41 has an upper side 51 on which the underside of the top wall 16 can be supported. A pressure exerted on the top wall 16 from above is therefore introduced into the counter surface 49.
  • a longitudinal groove 53 is machined into the upper side 51 and is several times as deep as the sheet layers 26, 28 are thick.
  • a circular disk 54 is arranged above the counter surface 49 and above the longitudinal groove 53 and can be rotated about a geometric center axis 62. It has a circular circumference 63. The distance between the central axis 62 and the upper side 24 is chosen so that the circumference 63 rests on it and thus also holds the first sheet metal layer 26 down. Piercing incisors 64, 66 protrude beyond the circumference 63, in pairs opposite each other and offset angularly by 60 degrees.
  • a tip 69 which, however, merges tangentially as a curve into the front flank 68 as shown in the drawing.
  • the tip 69 is followed by a short, flat rear flank 71 and a steeper, multiple longer rear flank 72, which merges with the circumference 63 above.
  • the shape of the piercing cutting tooth 64 effects the specific configuration of the metal tabs still to be discussed.
  • the tip 69 began to pierce in the area 73, and the piercing incisor 67 will later pierce in the area 74. This happened in the left area on the inlet side of the longitudinal groove 53.
  • the first sheet metal layer 26 has become a first sheet metal tab 76 and below a second sheet metal tab 77 peeled out.
  • the sharp cutting edges 81, 82 of the front flank 68 were decisive for this.
  • the interface 83 between the longer first sheet-metal tab 76 and a third sheet-metal tab 84 has provided the tip 69, which has cut crosswise. She also provided the interface 86 between the second sheet metal tab 77 and a fourth sheet metal tab 87.
  • the fitting 41 has a through bore 108 coaxial with the geometric longitudinal axis 107, with which it is held riding on the horizontal rod 33, but cannot move further to the right, as the pressure tube 39 indirectly and the adjusting nut 37 directly dictates.
  • the molded part 41 is in this respect floating - like, by the way, the molded part 38 because of the same construction in this respect - as it can pivot about the geometrical longitudinal axis 107 and thus adapt to unevenness and other non-ideal working conditions.
  • the shaped piece 41 has a plane 109 parallel to the geometrical longitudinal axis 107 corresponding to the course of the plane of the bottom wall 12. If this had a different shape, the plane 109 would have to be complementary.
  • Skid radii 111, 112 are provided to the right and left of the plane 109, as can also be seen on the shaped part 38, so that unevenness in the bottom wall 12 can be run over and does not get caught.
  • the two side walls 113, 114 with their inwardly jumping step 116, 117 are in this respect complementary to the side walls 13, 14 and allow the formation of the knees 19.
  • the shape of the side walls 113, 114 also maintains the desired shape of the profile 11.
  • top wall 118 corresponds complementarily to the shape of the underside 52.
  • the top wall 118 also passes over skid radii 119, 121 into the front wall 132 and into the rear wall 133, so that bumps are also run over here because of the skid radii 119, 121 and possibly can even be smoothed.
  • an upwardly open, rectangular receiving groove 122 is incorporated into the upper wall 118, in which a cutting insert 123 according to FIGS. 1d to 1f is seated.
  • This is made of a special material, material 2080, which has a long service life.
  • the cutting insert 123 sits practically without play in the receiving groove 122. It also has the skid radii 119, 121.
  • the longitudinal groove 53 is ground, which is open both upwards and to the front and to the rear.
  • the cutting insert 123 is held by two hexagon screws 124, 126 which are screwed into blind hole threaded holes 127, 128, the latter being axially parallel to the geometric longitudinal axis 107.
  • the washers 129, 131 clamped under the respective head of the hexagon screws 124, 126 are supported on the one hand on the end faces 132 and 133 and on the other hand on the end faces 134, 136 of the cutting insert 123 aligned with them, so that the latter is held geometrically immovable in the longitudinal direction is, but can be easily replaced after loosening the screws 124, 126.
  • 1c also shows on the molding 41 further lateral skid radii 137, 138 which have the same effect with respect to the side walls 13, 14 of the profile 11 as already described with reference to other skid radii. Analogous to these skid radii, the fitting also has 38 skid radii.
  • first and second sheet metal tabs meet the front edge 94, they are bent clockwise around their respective knees and the underside of the first sheet tab grinds on the flat upper side 97 of the molded part 38 Circular disk 96, which is aligned in the longitudinal direction with the circular disk 54, but has a continuous circular cylindrical circumference 99, but has essentially the same diameter as its predecessor.
  • the circumference 99 presses the more than in FIG. 2 backward bent first sheet metal tab 76 around the knee 91, so that 76 and 77 as shown in FIG Pressure on the underside 101 of the second sheet metal layer 28 comes to rest.
  • the fact that the first sheet metal tab 76 slides with considerable friction on the upper side 97 also contributes to the firm connection and thus the connection "contracts" like a knot. The result is a tight knee 91 and the underlying knee of the second sheet metal tab 77 is also tight.
  • the third sheet metal tab 84 and the fourth sheet metal tab 87 are also pressed down. However, since these metal tabs adhere to their interface 86, 83 close to the beginning of the hole 44, they are short according to the drawing and can never reach the top 97. You must not do this, because otherwise this part of the connection would open again.
  • the tabs 76, 77, 84, 87 are thus supported in the transverse direction on the longitudinal edges 92, 93.
  • the sheet metal tabs 76, 77 primarily hold the sheet metal tabs 84 and 87 in the transverse direction, but also as a result of the non-positive and positive connection that is also present.
  • each cutting edge 81, 82 cuts along the longitudinal edges 92, 93 and this results in the transition from the first sheet metal layer 26 to second sheet metal layer 28 each has a cutting ridge 102, 103 which spreads out to become thinner and also makes it difficult to move the first sheet metal layer 26 relative to the second sheet metal layer 28 in the transverse direction of FIG. 7.
  • each cutting edge 81, 82 presses the upper edge region of the hole 48 - as far as it passes through the second sheet metal layer 28 - in the manner of a cut edge indentation 104, 106, as is known from normal cutting.
  • the embodiment shows the production of a closed tube.
  • the invention also achieves the connection of the edges of flat metal sheets.
  • the parts connected to one another in accordance with the invention no longer necessarily have to lie in a single plane.
  • the parts can also be curved two-dimensionally or three-dimensionally.
  • the invention works much faster, quieter, with less energy, with less material, more environmentally friendly, without harmful structural changes, etc., as the known techniques.
  • the exemplary embodiment describes the connection of two layers. According to the same principle, however, even more layers, e.g. three or four layers are bonded together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Laminated Bodies (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Packages (AREA)
EP95107161A 1994-12-09 1995-05-11 Connection pour bords de tôle et appareil pour réaliser une telle connection Expired - Lifetime EP0715910B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4443842 1994-12-09
DE4443842A DE4443842A1 (de) 1994-12-09 1994-12-09 Verbindung für Blechränder sowie Verfahren und Vorrichtung hierzu

Publications (2)

Publication Number Publication Date
EP0715910A1 true EP0715910A1 (fr) 1996-06-12
EP0715910B1 EP0715910B1 (fr) 2000-12-20

Family

ID=6535358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107161A Expired - Lifetime EP0715910B1 (fr) 1994-12-09 1995-05-11 Connection pour bords de tôle et appareil pour réaliser une telle connection

Country Status (3)

Country Link
EP (1) EP0715910B1 (fr)
AT (1) ATE198170T1 (fr)
DE (2) DE4443842A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1420906A4 (fr) * 1999-07-07 2004-05-26 Weeks Peacock Quality Homes Procede de formation d'un tube

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010008134B4 (de) * 2010-02-16 2017-07-06 Hubert Schlieckmann Gmbh Verfahren zum Herstellen eines Rohrs sowie Rohr und Achsbaugruppe mit einem Rohr

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010199A (en) * 1955-02-24 1961-11-28 Smith Tool and method for securing sheet metal pieces together
US3129489A (en) * 1959-03-16 1964-04-21 Enamel Products Splicer
GB978554A (en) * 1963-06-20 1964-12-23 John Richard Lane Web joiner
EP0029415A2 (fr) * 1979-11-16 1981-05-27 Giovanni Giasini Procédé et machine pour la jonction du bout et de la fin de bandes métalliques minces
EP0383993A1 (fr) * 1989-02-18 1990-08-29 LAHNWERK GMBH + CO. KG Verformungstechnik Friedensdorf Elément d'une construction de matériels à plusieurs couches, notamment pour véhicules automobiles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010199A (en) * 1955-02-24 1961-11-28 Smith Tool and method for securing sheet metal pieces together
US3129489A (en) * 1959-03-16 1964-04-21 Enamel Products Splicer
GB978554A (en) * 1963-06-20 1964-12-23 John Richard Lane Web joiner
EP0029415A2 (fr) * 1979-11-16 1981-05-27 Giovanni Giasini Procédé et machine pour la jonction du bout et de la fin de bandes métalliques minces
EP0383993A1 (fr) * 1989-02-18 1990-08-29 LAHNWERK GMBH + CO. KG Verformungstechnik Friedensdorf Elément d'une construction de matériels à plusieurs couches, notamment pour véhicules automobiles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1420906A4 (fr) * 1999-07-07 2004-05-26 Weeks Peacock Quality Homes Procede de formation d'un tube
EP1420906A2 (fr) * 1999-07-07 2004-05-26 Weeks Peacock Quality Homes Pty. Ltd. Procede de formation d'un tube
US6880581B1 (en) 1999-07-07 2005-04-19 Weeks Peacock Quality Homes Pty Ltd. Method of forming a tube

Also Published As

Publication number Publication date
ATE198170T1 (de) 2001-01-15
EP0715910B1 (fr) 2000-12-20
DE4443842A1 (de) 1996-06-13
DE59508910D1 (de) 2001-01-25

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