WO2010142703A2 - Procédé et outil pour le bordage d'une pièce - Google Patents

Procédé et outil pour le bordage d'une pièce Download PDF

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Publication number
WO2010142703A2
WO2010142703A2 PCT/EP2010/058040 EP2010058040W WO2010142703A2 WO 2010142703 A2 WO2010142703 A2 WO 2010142703A2 EP 2010058040 W EP2010058040 W EP 2010058040W WO 2010142703 A2 WO2010142703 A2 WO 2010142703A2
Authority
WO
WIPO (PCT)
Prior art keywords
flange
crimping
pressure surface
workpiece
axis
Prior art date
Application number
PCT/EP2010/058040
Other languages
German (de)
English (en)
Other versions
WO2010142703A3 (fr
Inventor
Markus Wess
Friedhelm Kirsch
Rene Kahlke
Original Assignee
Edag Gmbh & Co. Kgaa
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 Edag Gmbh & Co. Kgaa filed Critical Edag Gmbh & Co. Kgaa
Priority to EP10724078.0A priority Critical patent/EP2440343B1/fr
Publication of WO2010142703A2 publication Critical patent/WO2010142703A2/fr
Publication of WO2010142703A3 publication Critical patent/WO2010142703A3/fr

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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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
    • B21D19/043—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of plates
    • 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
    • B21D39/02—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 by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—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 by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors

Definitions

  • the invention relates to a method and a tool for crimping a workpiece by means of a crimping member, which is forcing against a flange of the workpiece along the flange forward and thereby progressively flips the flange in the advancing direction.
  • the workpiece may in particular be a sheet metal part.
  • roll flanging In industrial manufacturing, for example, the mass production of automobiles, roll flanging is gaining in importance.
  • roll crimping especially crimp connections can be generated, for example, a rabbet joint between an outer skin part of a vehicle and an inner part.
  • Roll flanging is a roll fold in this particular application.
  • roll crimping not only seaming can be created, but also projecting flanges for other types of joining or completely unalloyed flared flanges to create round flanged edges or even partially folded flanges for other purposes.
  • Beading with a flanging member, such as roll flanging, departing from the flange to be folded, has the advantage of lower investment costs and greater flexibility with regard to the multidimensional course of the flanging edge, compared with conventional edge bending, bending or drawing in a press.
  • roll flanging in relation to the course of the flanged edge.
  • the flanging edge tends to distortions in such a flaring operation to the inside.
  • Another problem is the degree of deformation achievable during roll crimping.
  • the angle by which the flange can be folded in a crimping step ie in a single run of the crimping member, is limited to a range of about 30 ° to 45 °. If the flange by 90 ° or larger angles, for example, completely folded over by 180 °, successively several, successive building Crimping steps required.
  • Methods and devices for flanging workpieces, in particular also in several crimping steps are described, for example, in EP 1 420 908 B1, EP 1 685 915 B1 and EP 0 802 001 B1.
  • a flange of a workpiece by means of a flange departing Bördelglieds cleanly, so that a contour-consistent, warpage-free flanged edge is obtained.
  • the invention is based on a method and a tool in which a flanging member rotating about an axis of rotation moves along a flange of the workpiece in a propelling direction, pressing a face pressure surface of the crimping member against the flange during the propelling motion with a compressive force, and pressing the flange by the pressing end pressure surface and a circumferential around this peripheral edge of the crimping in the advancing direction progresses, preferably continuously advancing, is folded around a pointing in the advancing direction flanging edge.
  • the flange may already bend from an adjacent to the flange strip with a slope, so that even before flanging a flanged edge or at least an edge-like curve is present, along which the flanging is moved when flanging the invention.
  • the invention is particularly suitable for flanging, by which the flanged edge is generated for the first time ever.
  • the flange to be folded can therefore extend the adjacent strip of the workpiece with a smooth or even curvature compared to the flanging edge to be created, as is the case in preferred applications.
  • the axis of rotation of the crimping member during beading is at least substantially orthogonal to the folded flange, so that the crimping member does not roll on the flange as in the case of roll crimping, but slides with the end pressure surface over the flange.
  • the relative movement, which performs the crimping member with its end pressure surface in pressure contact with the flange relative to this, is at least substantially a sliding movement.
  • a possible rolling contact which should not be excluded categorically, has at most a minor importance for the transformation.
  • the Stirnyakllumblee orthogonal to the axis of rotation of the crimping and plan It has with the flange advantageously only sliding contact and rotates in contact pressure quasi grinding on the flange, while the hemming on the leading outer edge of Stirn réellefiambae, its pressure edge, the flange around the flanged edge.
  • an inclination of the forehead pressure surface measured radially to the axis of rotation is maximally 10 °, preferably a maximum inclination is at most 5 ° and more preferably at most 2 °, local to the respective radial to the axis of rotation measured.
  • This may be advantageous, for example, to lay the flange around a flanged edge, which is concavely curved with respect to the Stirnyakfikiee.
  • Such a geometry may include, for example, the crimp edges of wheel arches or attachments of motor vehicles.
  • the flanged edge of a wheel arch can not only curve around the wheel axle, ie be curved in the side view of the respective motor vehicle, but also be curved with respect to a vertical plane pointing perpendicularly to the wheel axle in the longitudinal direction of the vehicle, namely either inwards or but to the outside. If the crimping edge is curved inwardly, a crimping roller can be used with a flat and exactly orthogonal to the axis of rotation of the crimping roller pointing Stirntigfiambae readily.
  • the flanging edge bulges outward, at least in sections, a cavity would form between a face pressure surface which is exactly orthogonal to the axis of rotation and the flanging edge; the flanged edge would be concavely curved in relation to the face pressure surface.
  • the Stirnscherfiambae has at least within an annular surface extending around the axis of rotation a slight inclination, so seen from the outside convex, for example conical.
  • the inclination may be constant in said annular surface or over the entire Stirnyakfizze to radially outward to the pressure edge, so that the Stirnyakfiambae would be conical overall.
  • the inclination can also vary from the inside to the outside radially, expediently monotonically, and in the case of a variation to a small extent, bulging out in the direction of the flange to be reshaped, small in comparison with the radial extent of the forehead pressure surface.
  • a tool according to the invention comprises a carrier and the crimping member rotatably mounted by the carrier about the rotational axis with the at least substantially orthogonal and at least substantially planar slanted pressure surface which merges radially outward into the pressure edge of the crimping member with respect to the axis of rotation.
  • the crimping member can transition over from the end pressure surface to a peripheral surface of the crimping member which is preferably free during crimping, that is to say have a sharp pressure edge.
  • the pressure edge can also be curved comparatively soft with a radius of curvature of several millimeters, quite up to about 20 mm.
  • a sharp pressure edge with a radius of curvature of only a few millimeters, preferably 2 to 10 mm, optionally also only in the form of a circumferential around the axis of rotation chamfering, is preferred to the flange immediately after the introduced at the pressure edge forming in the pressure contact with the end pressure surface bring to.
  • the running in the workpiece according to the invention flanging forming process is not comparable to that of Rollbördelns.
  • the force required for transfer is not introduced along an axial rolling contact line of a crimping roller, but rather on a leading side of a circumferential edge of rotation about the crimping member.
  • the flange is stretched in pressure contact with the pressure edge and immediately following the end pressure surface of the flanging edge towards the edge of the flange, preferably in the leading portion of the end pressure surface, ie in the region between the axis of rotation and the leading in relation to the advancing direction side of the crimping member.
  • the crimping edge is concavely curved relative to the axis of rotation of the crimping member, that is, it also extends around the axis of rotation of the crimping member Bördelglieds, so that the flange is folded outwards and therefore experience an additional stretch in the curved workpiece area.
  • the flange is pressed in the crimping preferably against a system that can support the workpiece in particular in the region of the crimping edge, so that the flange is folded around a corresponding edge of the edge formed edge of the system and applied with its underside to an upper side of the system.
  • the top of the plant is the
  • Front end face of the crimping member facing, preferably axially opposite, so that between the top of the system and the end pressure surface remains a gap in which the flange is also pulled in pressure contact with the end pressure surface and thereby stretched.
  • the system can be moved together with the crimping member in the advancing direction, in synchronism with the crimping member.
  • the system is stationary relative to the workpiece, so immovable.
  • the system is used in both alternative embodiments as a die, once as with the crimping member together relative to the workpiece movable and the other time as relative to the workpiece immovable die.
  • the conditions can also be reversed, so that the crimping in the crimping in space absolutely stationary, but rotatable about the axis of rotation, is arranged and the workpiece and in the case of a stationary relative to the workpiece also this along the crimping the course of the crimping edge is or will be moved. Furthermore, the workpiece and the crimping member during the crimping in a coordinated manner the course of the crimping edge can be moved relative to each other and in each case also absolutely in space.
  • the flanging member can have only the front pressure surface and the pressure edge acting elements acting on the workpiece.
  • the crimping for example, simply as a circular disc with the front pressure surface on a End face and this around the pressure edge to be formed.
  • the crimping member also has at least one further active surface, which is in contact with the workpiece during crimping.
  • This further active surface is a peripheral surface extending around the axis of rotation, with which the crimping member rolls on the workpiece during crimping and which guides the crimping member along the crimping edge.
  • the Urafangswirk Evaluation rolls in a strip of the workpiece, which extends along the flanged edge and at the flanged edge directly adjacent to the flange, is thus spaced from this only over the flanged edge.
  • the particularly preferred embodiments the Urafangswirk Type is preferably immediately at the flanging edge of the workpiece with the workpiece in rolling contact, while the hemming member flips the flange. Also in this way it is ensured that the flanged edge in its longitudinal direction is consistent and distortion, preferably without warpage, formed.
  • the circumferential effective area forms a further pressure surface of the crimping member and is therefore also referred to below as circumferential pressure surface.
  • it also fulfills a supporting function for the workpiece in the particularly preferred embodiments.
  • the system preferably also forms the circumferential pressure surface radially opposite a counter-pressure surface for a surface or linear contact. If the installation is immovable relative to the workpiece during the crimping, it is preferably in surface contact with the workpiece. If it moves together with the crimping member in space or is stationary therewith, it can also be in planar contact with the workpiece, in a sliding contact, or alternatively in a line contact, namely, when it is formed as an abutment sheet, the rolls the workpiece strip adjacent to the flanging edge.
  • the face pressure surface and the peripheral pressure surface are arranged relative to each other such that a surface normal directed away from the face pressure surface and a surface normal of the circumferential pressure surface directed away from the rotation axis are directed toward each other.
  • the crimping member in which the crimping member has the end pressure surface and the peripheral pressure surface, can in particular have a stem-shaped axial portion with the peripheral surface and a widened plate-shaped axial section, on the opposite side of the peripheral pressure surface facing the bottom pressure surface is formed.
  • the crimping member may in particular consist of a stem-shaped axial portion and an axially adjoining thereto plate portion so that it is mushroom-shaped as a whole with a stem and a comparatively wider plate.
  • the front pressure surface is rotationally symmetrical in preferred embodiments with respect to the axis of rotation, which accordingly applies to the pressure edge.
  • the circumferential pressure surface is preferably rotationally symmetrical with respect to the axis of rotation over its entire axial length with which it is in rolling contact with the workpiece during crimping.
  • the crimping member is rotationally symmetrical at least everywhere where it is in contact with the workpiece during crimping.
  • the Sürnscher is in preferred embodiments via a throat or rounding in the circumferential pressure surface over, wherein the throat or rounding is shaped angepassl in a further preferred embodiment of the cross section of the flanged edge to be produced.
  • the front pressure surface and preferably also the peripheral pressure surface preferably runs tangentially into the throat, at least it is preferred if there is no undercut in the transition region, ie in the throat.
  • the crimping member is in such a shape in the region of the front pressure surface, in the region of the peripheral pressure surface and also in the region of the throat, the transition of the two pressure surfaces, with the workpiece in pressure contact, preferably along a continuous line.
  • the circumferential pressure surface is cylindrical and thus at least substantially orthogonal to the end pressure surface.
  • the flange can be folded in a single crimping step by 90 °, so that it then protrudes at an angle of 90 ° from the adjacent strip of the workpiece, against which the peripheral pressure surface presses when crimping.
  • the peripheral pressure surface may be conical, either widening axially in the direction of the face pressure surface, for flipping the flange by an angle less than 90 °, or tapering axially toward the face pressure surface, around the flange in a single crimping step one Tilt angle greater than 90 °.
  • the circumferential pressure surface can also have a curvature when viewed in the central longitudinal section of the crimping member.
  • the face pressure surface and the peripheral pressure surface can, seen in central longitudinal sections of the crimping member, in principle have any arbitrary angle greater than 0 ° and less than 180 ° to one another, but angles of at least 50 ° are expedient. If the peripheral pressure surface with the Stirntigfikiee encloses an angle of 50 °, the flange can nevertheless be folded over in a single crimping step by 140 °, if the flange namely before the crimping according to the invention extends beyond the flanging edge strip of the workpiece axially straight.
  • the invention allows the folding of a flange by such a large angle in the curved areas of a workpiece, and the flanged edge is still generated contour-accurate and free of dents or other distortions.
  • the invention is also suitable for crimping in application traps in which a flange is folded over only in a crimping step of at most 45 °, as usual in the case of roll crimping.
  • a support member may be axially supported on the support, on which the crimping member can be acted upon by an outer support force on a rear side facing away from the Stirnyakfizze axially to press the Stirnyakfizze against the flange.
  • the support member may be a single roller, in particular a cylindrical or conical roller, a ball or a differently shaped body of revolution, which rolls on the back of the hemming member in its rotational movement.
  • Anstalt a single support member, the crimping member may be supported on its rear side by means of a ring of about the axis of rotation of the crimping member arranged rotational bodies.
  • Such a turntable extended about the axis of rotation of the crimping member may be formed, in particular, in the manner of a thrust bearing, for example an axial ball bearing, via which the crimping member is axially supported on the carrier, wherein the crimping member may also be supported on the carrier only via an axial rotary bearing.
  • a thrust bearing for example an axial ball bearing
  • Such a bearing can advantageously form the pivot bearing and axial support of the crimping member on the carrier in a dual function.
  • a support via a rolling body is preferred, it should not be ruled out that the support can be formed only as a sliding support.
  • the invention is not suitable for flanging sheet metal profiles, such as angle sections, pipes and tubes, also for flanging body parts of vehicles, especially automobiles, and attachments of vehicles, such as moving attachments such as doors, hoods, flaps and sunroofs or when installed movable attachments such as integrated in body side panels wheel arches.
  • the production of flanges on exhaust pipes is another application example.
  • the invention can be advantageously used in vehicle construction, it is not limited thereto. It is of particular advantage everywhere, where in a single or at least only a few crimping steps a clean curl on workpieces to be generated.
  • the invention is also advantageous for flanging metal housing, such as housings for solar cells and solar panels.
  • flanging ovens such.
  • metallic stoves and metallic components of washing machines As metallic stoves and metallic components of washing machines.
  • the invention is suitable for flanging, for example, steel sheets, in particular also for flanging stainless steel sheets, but also for flanging light metal sheets, such as aluminum sheets.
  • FIG. 1 shows a flanging arrangement of a first embodiment in a perspective view
  • FIG. 2 shows the flanging arrangement of FIG. 1 in a top view
  • FIG. 3 shows the crimping arrangement of FIG. 1 in a section
  • FIG. 4 shows the crimping arrangement of FIG. 1 in a section and with an additional section
  • Figure 5 shows the crimping arrangement of Figure 1 in a section and with an additional
  • FIG. 6 shows a flanging arrangement in a second exemplary embodiment in a section
  • FIG. 7 shows a flanging arrangement in a third exemplary embodiment in a section
  • FIG. 8 shows a flanging arrangement in a fourth exemplary embodiment in a section
  • FIG. 9 shows a flanging arrangement in a fifth exemplary embodiment in a section
  • FIG. 10 shows a flanging arrangement in a sixth exemplary embodiment in a section when a first flared cut is made
  • FIG. 11 shows the flanging arrangement of FIG. 10 in section and when a second flared cut is made
  • FIG. 12 shows a flanging arrangement of a seventh exemplary embodiment in a view
  • FIG. 13 shows a flanging arrangement of an eighth exemplary embodiment in a section
  • FIG. 14 shows a flanging arrangement of a ninth exemplary embodiment in a view
  • FIG. 15 shows the flanging member of the ninth embodiment
  • FIG. 16 shows the flanging arrangement of the ninth embodiment in one view
  • FIG. 17 shows a flanging arrangement of a tenth embodiment in a section
  • FIG. 18 shows a flanging arrangement of an eleventh embodiment in a first embodiment
  • Figure 19 shows the flare assembly of the eleventh embodiment in a second forming step for forming the drop flange
  • FIG. 20 shows a flanging arrangement of a twelfth exemplary embodiment when forming a
  • FIG. 1 shows a flanging arrangement of a first exemplary embodiment, with which an angularly projecting flange 2 is formed on a workpiece 1 by crimping.
  • Workpiece 1 is a sheet metal profile. It is curved around a central workpiece axis and has two straight legs, which run tangentially into a curved area, which connects the two legs together. At one axial end of the
  • Workpiece 1 is folded by crimping said flange 2 about a crimping edge 3, so that the folded flange 2 protrudes with respect to the curvature region of the workpiece 1 to the outside.
  • the workpiece 1 is easy before flanging over the flanged edge 2 away straight, the flange 2 is still "open".
  • the flanged edge 3 is first formed by the crimping.
  • the flange 2 is folded around the crimping edge 3 created with a crimping member 10 of a crimping tool (not shown).
  • the crimping member 10 cooperates with a relative to the workpiece 1 not movable investment structure 5, which forms a die for the workpiece 1 during the beading.
  • the contact structure 5 has an abutment surface on an upper side, against which the flange 2 abuts when it is folded over with its underside.
  • the contact structure 5 further forms a contact edge around which the flange 2 is folded to provide the flanged edge 3, and on an inner side a further contact surface for the workpiece 1, in particular for a along the flanged edge 3 to directly to the flanged edge 3 extending strip 4th of the workpiece 1.
  • the strip 4 and the flange 2 form a smooth surface, in the exemplary embodiment an axially straight surface.
  • the strip 4 and the flange 2 are accurately separated by the crimping edge 2, i. the strip 4 passes over the flanged edge 3 in the folded flange 2 over.
  • the crimping tool comprises a carrier, which is attached to a controlled in space or controlled movable actuator, for example, at one end of a robot arm of an industrial robot.
  • the carrier is preferably releasably secured by means of a coupling on the actuator and accordingly comprises a coupling half of this coupling.
  • the coupling is preferably formed so that the actuator can automatically dock on and undock.
  • the crimping member 10 is rotatably supported on the carrier about a rotation axis R, preferably freely rotatable.
  • the crimping member 10 consists of a plate 11 and a in
  • Plate has on a handle 12 facing the underside an end pressure surface 13, with which the crimping member 10 in the beading with a parallel to the rotation axis R
  • the outer peripheral surface of the stem 12 is used in the beading as peripheral pressure surface 14 by the hemming member 10 rolls on the strip 4 of the workpiece 1 along the flanged edge 3.
  • the crimping member 10 is in the result of the axial pressure force on its end pressure surface 13 in the pressure contact with the flange second and pressed with a lateral force transverse thereto at its peripheral pressure surface 14 in the rolling contact.
  • the crimping member 10 For crimping, the crimping member 10 is moved along the crimping edge 3 and the underlying contact edge of the contact structure 5 in the advancing direction V, so that it rolls with its peripheral pressure surface 14 on the strip 4 of the workpiece 1 and slides with its end pressure surface 13 on the folded flange 2 and relative to the flange 2 thus executes a rotational sliding movement. In FIG. 1, the crimping member 10 approaches the curvature region of the workpiece 1.
  • the front pressure surface 13 presses, is shown in dotted lines.
  • the front pressure surface 13 leads in a leading
  • the hemming member 10 has around the end pressure surface 13 circumferentially on a pressure edge 15 which limits the end face 13 radially outward.
  • the plate 11 goes on its underside over the
  • Flanging member 10 arrives in the forming process on its leading side first with his
  • Rotation axis R purely axial pressure contact passes. Due to the already existing behind the pressure edge 15 surface pressure contact the flange 2 is immediately in front of the
  • Pressure edge 15 already folded by a certain angle, so to speak, anticipatory.
  • the pressure edge 15 and end pressure surface 13 act together as a result advantageous, so that also flanged edges 3 with a curved course, in particular concave with respect to the
  • Rotation axis R curved, so curved about the rotation axis R flanged edges 3, be formed clean. Due to the rolling circumferential pressure surface 14, the crimping is further improved. However, the lateral force with which the crimping member 10 is pressed against the strip 4 is preferably smaller than the axial compressive force with which the end pressure surface 13 presses against the flange 2.
  • FIG. 3 shows the flanging arrangement of FIGS. 1 and 2 in a section which contains the axis of rotation R of the flanging member 10.
  • the pressure exerted by the crimping member 10 on the end pressure surface 13 on the folded flange 2 axial pressure force is denoted by F. It is parallel to the axis of rotation R.
  • the in the direction of advance V ( Figures 1 and 2) located further in front of the crimping member 10 and therefore still completely upright flange is shown by dashed lines and designated 2 '.
  • the Stirnscherfiambae 13 is flat and extends as I said orthogonal to the axis of rotation R. It goes over the pressure edge 15 with a small radius of curvature in the free peripheral surface of the plate 11 over. Radially inside she goes with also small radius to form a throat 16 in the peripheral pressure surface 14 on.
  • the crimping member starting with the pressure edge 15 on the end pressure surface 13 and the throat 16 to the peripheral surface including 14 continuous pressure contact with the workpiece 1, namely with the flange 2, the crimping edge 3 produced by the crimping and the adjacent strip 4. Die Surface contour of the active elements 13-16 limited with the investment structure 5 a gap.
  • the workpiece 10 fills the gap, is thus at and on both sides of the flanged edge 3 with its inner side against the contact structure 5 and with its outside to the hemming member 10 nestled or clamped between the hemming member 10 and the plant structure 5.
  • This continuous contact line in the forming region of the workpiece 1, in particular of the crimping member 10, preferably supported by the abutment structure 5, also contributes to the improvement of the crimping result.
  • the throat 16 is shaped so that both the front pressure surface 13 and the peripheral pressure surface 14 tangentially tangentially enter the throat 16 and no bulge to the inside, in the direction of the axis of rotation R arises.
  • the throat 16 to dive radially inward, in such a modification, the contact edge of the investment structure 5 may be bulged accordingly For example, to form a beading 3 bulged in a bead-like manner.
  • FIG. 4 shows the flanging arrangement of the first exemplary embodiment in a first variant of a further development.
  • a support member 8 is axially supported on the support of the crimping tool, which exerts an axial support force on the crimping member 10 during crimping.
  • the support member 8 is arranged so that it presses against one of the front pressure surface 13 axially facing away from the rear free end face of the crimping member 10 in the direction of the compressive force F and thereby relieves the axial support of the crimping member 10 on the carrier.
  • the support member 8 is further arranged so that it presses the flange 2 axially opposite in the direction of the pressing force F against the crimping member 10 and this is clamped between the support member 8 and the flange 2, so to speak, but rotate under the support member 8 about its axis of rotation R. can.
  • the support member 8 is advantageously a roll support member which is rotatably mounted on the support about a rotation axis R ', wherein the rotation axis R 1 is aligned so that the support member 8 rolls on the back of the hemming member 10 when it rotates about the rotation axis R.
  • the rotation axis R ' orthogonal to the rotation axis R.
  • FIG. 5 shows the flanging arrangement of the first exemplary embodiment in a second variant of the further development.
  • the second variant corresponds in many parts to the first variant shown in FIG. It differs from this only by the orientation of the rotation axis R 'of the modified support member 9. While the support member 8 of the first variant has a cylindrical peripheral rolling surface, the manufacturedsroMambae of the support member 9 with respect to the rotation axis R' conical.
  • the axes of rotation R and R 1 therefore do not intersect each other at right angles, but rather the axis of rotation R 'is oblique to the axis of rotation R.
  • the explanations apply to the first variant.
  • FIG. 6 shows, in a section containing the rotation axis R, a flanging arrangement of a second exemplary embodiment, which differs from the flanging arrangement of the first embodiment only in that the flange 2 is folded over by an angle which is smaller than 90 °.
  • the flange 2 is folded over from the erected state by an angle of approximately 60 °.
  • the hemming member 20 and the abutment structure 6 are modified accordingly compared to the first exemplary embodiment.
  • the crimping member 20 corresponds to the first embodiment in the region of the plate 21.
  • the stem 22 is not cylindrical with respect to the axis of rotation R and widened radially in the direction of the face pressure surface 23.
  • the re-planar face pressure surface 23 and the conical peripheral pressure area 24 correspond to the angle to which the flange 2 is transferred to each other, in the exemplary embodiment at an angle ⁇ of about 130 °.
  • the remarks apply to the first embodiment, in particular, the rotation axis R again orthogonal to the folded flange 2. It may additionally be provided one of the support members 8 and 9.
  • Figure 7 shows a crimping arrangement of a third embodiment, in which the flange 2 is folded over in a single crimping step by an angle which is greater than 90 °.
  • the flange 2 is folded over by an angle of about 120 °.
  • the Stirnscherfikiee 33 of the modified Bördelglieds 30 is again flat and orthogonal to the axis of rotation R, which, as in the first and in the second embodiment in the beading orthogonal to the folded flange 2 has.
  • FIG. 8 shows a flanging arrangement of a fourth exemplary embodiment.
  • the crimping tool comprises the crimping member 10 of the first Ausfactangsbeispiels.
  • a synchronous with the hemming member 10 along the hemming edge 2 moved abutment member 18 to Commitment.
  • the abutment member 18 may in particular be supported on the carrier of the crimping tool.
  • the abutment member 18 is rotatable about an axis of rotation R ", which points obliquely to the axis of rotation R and preferably performs a rolling-sliding movement and in the region of its abutment edge in the crimping with its two faces of the face pressure surface 13 and the circumferential pressure surface 14 Essentially a pure rolling motion relative to the workpiece 1.
  • FIG. 9 shows a flanging arrangement according to a fifth exemplary embodiment, in which the die in the form of an abutment member 19 is also moved synchronously with the crimping member 10 in the advancing direction V.
  • the axis of rotation R "of the abutment member 19 is parallel to the axis of rotation R of the crimping member 10.
  • the abutment member 10 has a planar end face against which the flange 2 comes to rest with its underside, and a circular cylindrical peripheral surface, the Because of the orientation of the axis of rotation R ", there is only rolling contact in the region of the strip 4 and only sliding contact with the workpiece 1 in the region of the flange 2 in the transition region, the flanged edge 3 the abutment member 19 roll-sliding contact with the workpiece 1. Otherwise, the comments on the first and the fourth embodiment apply. Also in the crimping arrangements of the fourth and fifth exemplary embodiments, the respective crimping member 10 can be supported on its rear ropes facing away from the end pressure surface 13 by means of a support member 8 or 9 (FIGS. 4 and 5).
  • the milbewegte abutment member may be arranged non-rotatably on the support of the crimping tool so that it slides on the outside of the workpiece 1 along the crimping edge 3, while the crimping member 10, 20 or 30, the flange 2 in a further modification and to the co-moving system sliding member applies.
  • Figures 10 and 11 show a derived from the first exemplary embodiment flanging of a sixth embodiment, by means of which a rabbet joint is created.
  • attachments of automobiles such as doors, bonnets,
  • the workpiece 1 forms a sliding roof frame and the workpiece V, the roof skin of an automobile.
  • the workpiece 1 is supported on a lower side on a folding bed 27 and has a surrounding the Dachöfmung, at least substantially perpendicularly projecting from the bottom web, which may be interrupted in its course around the roof opening or may have a varying height.
  • the flange 2 forms an outer edge of this web.
  • the web is up to and including the of Flange 2 formed outer edge just straight, so that the flange 2 must be folded over to form the folding pocket by 180 °. This happens in only two crimping steps.
  • FIG. 10 shows the flanging arrangement during the first flanging step in which the flanging member 10, as described for the first exemplary embodiment, flips the flange 2 by 90 °.
  • the crimping member 10 is used in combination with an abutment member 28 which, as described for the fourth and fifth exemplary embodiments, is moved together with the crimping member 10 in the shown relative position in the advancing direction V.
  • the abutment member 28 is formed as a sliding block. It is arranged on the carrier of the crimping tool.
  • the abutment member 28 forms one of the end pressure surface 13 axially opposite first contact surface against which the flange 2 is applied, and the peripheral pressure surface 14 opposite a second 6.3fiambae with which it protrudes from the bottom of the workpiece 1 web in the region of the contact strip 4 against the peripheral pressure surface 14 transverse to the axis of rotation R is supported.
  • the ettergleitglied 28 protrudes like a finger in the formed in the first flanging U-profile of the workpiece 1.
  • In order to reduce the friction Schjnierstoffzu Entry may be provided, for example on or ira Traderitglied 28 through which in the gap between the workpiece 1 or 1 'and the 6.3gleitglied 28 lubricant is introduced.
  • Figure 11 shows the crimping member 10 during the subsequent second crimping step, the Fertigbördei Colour in which the folded in the first crimping 90 ° flange 2 by another 90 ° and thus completely up against the protruding into the fold pocket formed edge strip of the workpiece 1 * is folded ,
  • the flanging member 10 assumes relative to Faizbett 27 a relative to the first crimping tilted by 90 ° position, so that the rotation axis R again orthogonal to the edge flange 2 has.
  • the crimping edge 3 is also in the finished Bröelel intimid in snug contact with the throat 16 of the crimping member 10, which therefore has rolling contact with the crimping edge 3 and sliding contact again with the flange 2 in the area of the front pressure surface 13.
  • the crimping member 10 cooperates with an abutment member 29, which supports the web of the workpiece 1 rising from the folding bed 27 against the pressing force F of the crimping member 10.
  • the abutment member 29 is a on the support of the crimping tool about the rotation axis R "rotatably mounted Rollaway member.
  • the rotation axes R and R are orthogonal to each other and intersect each other.
  • FIG. 12 shows a flanging arrangement of a seventh exemplary embodiment in a view.
  • the B ⁇ rdelan extract is derived from the Bördelan extract the first exemplary embodiment.
  • the crimping member 10 of the first exemplary embodiment is used. in the
  • the flanged edge 3 is a transversely to the
  • Rotated axis R pointing axis ilimmt With respect to the front pressure surface 13, it is convexly curved, that is, as viewed from the instantaneous location of the axis of rotation R, it curves on both sides away from the front pressure surface 13.
  • the workpiece 1 may additionally be curved about a workpiece axis parallel to the axis of rotation R, in particular concave with respect to the axis of rotation R.
  • the crimping member 10 is shown in a use as a folding member, in which it is to provide a
  • Folding connection of two workpieces 1 and 1 ' is used.
  • the workpiece 1 for example, a
  • Body such as the outer panel of a door, hood or tailgate.
  • Workpiece 1 ' is an inner part which is connected in a form-fitting manner to the workpiece 1 by folding.
  • the system 5 is shown as a fixed, stationary folding bed, but could be replaced by, for example, a running with the hemming member 10 conditioning member, in particular a counter-roller.
  • Figure 14 shows a crimping arrangement of a ninth embodiment in a view. While in the seventh embodiment, the local flanged edge 3 is convexly curved about an axis transverse to the axis of rotation R with respect to the Stirnyakfikiee 13 of the local flaring member 30, the flanged edge 3 curves in the ninth embodiment with respect to the Stirn réellefiambae 13 concave. If the front pressure surface 13 between the radially inner groove 16 and the pressure edge 15 plan and accurate orthogonal to the axis of rotation R, would arise between the in the plane of view opposite points of the pressure edge 15 a certain, albeit small cavity.
  • the end pressure surface 13 of the pressure edge 15 radially inward has a slight inclination to each radial local on the axis of rotation R, as viewed from the flanged edge 3 is therefore convex.
  • the inclination is approximately 2 ° in the exemplary embodiment.
  • the crimping member 40 is shown individually.
  • the example in the case of the entire face pressure surface 13 existing and also only for example everywhere constant inclination is denoted by " ⁇ ".
  • the result is a front pressure surface 13, which has a small conicity corresponding to the inclination ⁇ between the Dmckkante 15 and the throat 16.
  • FIG. 16 shows the crimping member 40 during folding, for example, of a wheel arch or an attachment for a motor vehicle, the crimping edge 3 being able to run concavely curved as seen in FIG. 14, viewed from the side of the front pressure surface 13.
  • the axis of rotation R is adjusted when turning the flange 2 of the inclination ⁇ of the end pressure surface 13 with respect to the folded flange 2 or employed, so that the end pressure surface 13 rests satiated on folding on the folded flange 2 and this by means of the described Drehgleit- and thus rotary grinding movement in the leading portion of the front pressure surface 13 stretches, as has already been explained with reference to the first embodiment.
  • the plant 5 is an example of a fixed folding bed.
  • FIG. 17 shows a flanging arrangement of a tenth embodiment.
  • the crimping arrangement comprises on a common carrier the crimping member 40 with the slightly inclined end pressure surface 13 and an abutment for the crimping member 40th
  • the opposing element 41 which is formed by way of example as a counter-roller and is accordingly rotatably mounted on the common carrier about an axis of rotation R ", is closed by the crimping section of the workpieces 1 and 1 'and a protective structure 42 Protective structure 42 serves to protect the workpiece 1.
  • Advantageous features of such a protective structure 42 are disclosed in EP 1 640 080 B1 If the crimping edge 3 has no concavely curved section with respect to the end pressure surface 13, the crimping element 40 can bear against, for example, the crimping element 10 r plan, to the rotation axis R orthogonal end pressure surface 13 are exchanged. The crimping member 10 would be given in such cases also relative to the crimping member 40, the preference.
  • the protective structure 42 and incidentally, the Appendix 5 of the eighth and ninth embodiment may be modified so that it has, as in the previous embodiments, a strip 4 which is shaped in adaptation to the inclination ⁇ so that the crimping member 40 with its safeguardsfiumblee 14 (Figure 15) on the strip 4 such a modified protective structure 42 unrolls.
  • Figures 18 and 19 show a crimping arrangement of an eleventh embodiment with a crimping member 40 in creating a so-called drop flange.
  • a drop flange is produced in the fold region of the workpieces 1 and 1 ', the folding pocket is produced with a cavity, as shown by way of example in FIG.
  • a sealing compound for example a pure sealing material or in particular an adhesive, can be introduced into the cavity.
  • the protective strip 42 is also used again.
  • the counter-member 41 could also contact directly the outer surface of the workpiece 1, to serve as an abutment for the crimping member 40.
  • the flange 2 is not completely folded with the hemming member 40.
  • the flange 2 is after this forming step with approximately the inclination ⁇ to the edge strip of Workpiece 1 'inclined, thus spreads seen from the flanged edge 3 from slightly from the edge strip, as shown in Figure 18 of the illustration because of exaggerated.
  • Stepped in a subsequent Rollbördel the flange 2 is pressed as shown in Figure 19 by means of a crimping roller 43 against the edge strip of the inner workpiece 1 '.
  • this last folding step as in FIG. 19, it is possible to use the same counter-member 41 as in the previous forming step, the sliding pull, if the crimping roller 43 and the crimping member 40 are movable, for example, on the carrier relative to the common counter-element 41, to selectively either the crimping member 40 or the crimping roller 43 with the counter 41 to use.
  • the crimping roller 43 and the crimping member 40 each have their own counter-member corresponding to the counter-member 41 may be provided.
  • the crimping member 40 is shown in the generation of a drop flange 2. It has surprisingly been found that the flange 2 by means of the crimping element according to the invention, for example the hemming member 40, in the same forming step, with omission of the intermediate step shown in Figure 18, completely transferred and shaped as shown in the same step already to a "drop" can.
  • the internal state of stress of the workpiece 1 is such that the droplet shape is formed by itself when it is being flipped by the drawing process according to the invention, namely when the end forming step in this modification is parallel to the opposite outer strip of the workpiece 1 or when folding into the folding pocket Edge strip of the workpiece I 1 points.
  • the hemming member 40 may be set negative to the opposite outer strips of the workpiece 1 and to a folding of the edge strips of the workpiece 1 'projecting into the folding pocket.
  • the front pressure surface 13 near the pressure edge 15 in the crimping or folding region would be closer to the opposite reference strip of the workpiece 1 or 1 'than in the region of the crimping edge 3.
  • Such a negative position can only amount to a few degrees.
  • the Stirndrack configuration 13 is guided at a certain distance from the reference strip. The distance depends on the desired thickness of the drop.
  • the flange can be transferred from state 2 'in one step by, for example, 30 ° or even more, in the example by 90 °, to the corresponding reference strip of workpiece 1 or 1 'created while the drop is formed.
  • the crimping member 40 can be exchanged for the crimping member 10 or also against the crimping member 20 or 30, in particular in applications in which the crimping edge 3 is not concavely curved to the front pressure surface 13. It would only change the position of the rotation axis R relative to the reference strip of the workpiece 1 or 1 'accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Abstract

L'invention porte sur un procédé pour le bordage d'une pièce, dans lequel a) un élément de bordage (10; 20; 30; 40) tournant autour d'un axe de rotation (R) se déplace le long d'une bride (2) de la pièce (1) dans un sens d'avancement (V), b) l'élément de bordage (10; 20; 30; 40) avec une surface de pression avant (13; 23; 33) et une arête de pression (15; 25, 35) faisant le tour de la surface de pression avant (13; 23; 33) est comprimé pendant ce mouvement d'avancement avec une force de pression (F) contre la bride (2) et c) la bride (2) est déplacée ainsi dans le sens d'avancement (V) de façon progressive d'une arête de bordage (3) dirigée dans le sens d'avancement (V), d) et l'axe de rotation (R) est dirigé au moins pour l'essentiel perpendiculairement à la bride (2) déplacée de sorte qu'un déplacement relatif, que l'élément de bordage (10; 20; 30; 40) exécute avec la surface de pression avant (13; 23; 33) par rapport à la bride (2) déplacée, est au moins pour l'essentiel un mouvement de glissement.
PCT/EP2010/058040 2009-06-09 2010-06-08 Procédé et outil pour le bordage d'une pièce WO2010142703A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10724078.0A EP2440343B1 (fr) 2009-06-09 2010-06-08 Procédé et outil pour le bordage d'une pièce

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910024344 DE102009024344B4 (de) 2009-06-09 2009-06-09 Verfahren und Werkzeug zum Bördeln eines Werkstücks
DE102009024344.5 2009-06-09

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WO2010142703A2 true WO2010142703A2 (fr) 2010-12-16
WO2010142703A3 WO2010142703A3 (fr) 2011-02-03

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DE (1) DE102009024344B4 (fr)
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DE102009024344A1 (de) 2010-12-30
EP2440343B1 (fr) 2014-06-11
EP2440343A2 (fr) 2012-04-18
WO2010142703A3 (fr) 2011-02-03

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