EP3600776B1 - Matrice de pressage pour un outil de presse pour le pressage de sections tubulaires de pièces à usiner - Google Patents

Matrice de pressage pour un outil de presse pour le pressage de sections tubulaires de pièces à usiner Download PDF

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Publication number
EP3600776B1
EP3600776B1 EP18773928.9A EP18773928A EP3600776B1 EP 3600776 B1 EP3600776 B1 EP 3600776B1 EP 18773928 A EP18773928 A EP 18773928A EP 3600776 B1 EP3600776 B1 EP 3600776B1
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EP
European Patent Office
Prior art keywords
die
hole
parts
contour
round
Prior art date
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Active
Application number
EP18773928.9A
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German (de)
English (en)
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EP3600776A1 (fr
Inventor
Thoralf Krause
Maximilian Gottschalk
Markus BÜCKER
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.)
Rothenberger AG
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Rothenberger AG
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Publication date
Priority claimed from DE102017120327.3A external-priority patent/DE102017120327A1/de
Application filed by Rothenberger AG filed Critical Rothenberger AG
Publication of EP3600776A1 publication Critical patent/EP3600776A1/fr
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Publication of EP3600776B1 publication Critical patent/EP3600776B1/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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/048—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using presses for radially crimping tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses

Definitions

  • the invention relates to a press die for pressing round tubular sections of at least two workpieces.
  • the invention also relates to a pressing tool with such a pressing die.
  • the invention relates to a method for producing a press connection of tubular sections of at least two workpieces and a method for producing a press die.
  • Press dies of the type discussed here are used, among other things, in press tools, for example to press round tubular workpieces into a pipe connection.
  • workpieces are, for example, press fittings, which are pressed with the ends of pipes by means of the pressing tools and serve as connecting pieces in a pipeline.
  • the press fittings consist, for example, of a relatively easily deformable material such as copper, brass or plastic.
  • the pipes can be copper, steel or multi-layer composite pipes.
  • the pressing usually takes place in such a way that the pressing tool exerts a high pressing force acting radially on the entire circumference of the press fitting, and this results in a press connection of the fitting with the pipe due to a targeted deformation of the material.
  • the pressing die of the pressing tool plays a key role here, since it largely determines the material deformation and thus the quality of the press connection.
  • the press die is usually adjusted to the shape and diameter of the workpieces to be connected in order to realize a press connection that meets the requirements, for example to achieve a media-tight press connection and/or a torsion-proof seat of the press fitting on the pipe.
  • Press dies for pressing tools for pressing pipes are from the DE 20 2016 102 438 U1 , the WO 2015/000465 A1 , the DE 103 19 376 A1 and the EP 3 381 618 A1 known. where the DE 20 2016 102 438 U1 discloses the preamble of claim 1.
  • a pressing tool is also to be provided which is suitable for the use of such a pressing die.
  • a method for producing such a press die and a method for producing a press connection of tubular sections of at least two workpieces by means of such a press die are to be proposed.
  • a basic press die for example for a press tool for pressing round tubular sections of at least two workpieces, comprises a front side, a back side and a through hole extending from the front side to the back side.
  • the rear side is arranged opposite to the front side.
  • the through hole includes a front opening at the front and a rear opening at the back.
  • the through hole includes a peripheral surface which is designed as a die surface and serves in particular as a mold for the workpieces to be pressed.
  • the press die is constructed in several parts by at least two die parts, in particular die segments, and comprises at least one, preferably two, closing points.
  • the closing points are each formed by mutually assigned end faces of mutually adjacent die parts of the at least two die parts, and the at least two die parts each preferably encompass a circumferential section of the through hole over a circumferential angle, so that in a closed position of the at least two die parts at the closing points, the circumferential surface of the through hole extends on the circumferential side is composed.
  • the target contour which is round, is based on the round cross-sectional shape of the workpieces to be pressed.
  • the round tubular sections of the workpieces to be pressed can be pressed with no or at most only slight formation of ridges. Due to the contour deviating from the round target contour, a shape is pressed into at least the outer round tubular section of one workpiece to be pressed over an area on the outer circumference, which makes it difficult to rotate the round tubular sections of the workpieces to be pressed relative to one another.
  • the region of the press die with the contour deviating from the round target contour forms or forms a contour on the workpieces to be pressed, which promotes a non-rotatable fit of the workpieces relative to one another.
  • a measure for forming an anti-twist device on at least one of the workpieces to be pressed is thus implemented.
  • the tubular sections of the workpieces only have to be deformed during pressing to such an extent that both sections have a contour that deviates from the round contour, at least partially over the circumferential area under consideration, or at least has an approximate contour. In particular, this is to achieve an anti-twist device by positive locking in the round-tubular sections pressed against one another.
  • chord in the course of the description is to be understood in particular as the connecting path or the connecting plane between the end faces adjoining the peripheral section of the through hole.
  • the chord is therefore to be understood as meaning the connecting path or the connecting plane which connects the peripheral ends of the peripheral section of the through-hole of a respective die part, which forms the die surface, to one another.
  • the contour deviating from the round target contour is rectilinear.
  • a contour that is technically relatively easy to produce is provided, which promotes the desired non-rotatable seat in the pressed workpieces.
  • the tubular sections of the workpieces are only to be deformed during pressing to such an extent that both sections at least partially have a linear or approximately linear in shape.
  • an anti-twist device can be achieved by positive locking in the round-tubular sections that are pressed against one another.
  • the polygon is a hexagon and the peripheral section of the through hole, which is formed by the at least one other die part, at least partially encompasses at least three sides of the hexagon.
  • the polygon or the hexagon can be a rounded polygon or a rounded hexagon.
  • the round target contour can be interrupted by an area with a contour that deviates from it.
  • the at least one die part with the round contour also supports the formation of the non-rotatable seat when the round tubular sections of the workpieces are pressed against one another.
  • the further contour deviating from the round target contour is rectilinear.
  • the contour that deviates from the round target contour is the chord of the associated at least one die part arranged spaced parallel.
  • the round target contour extends over at least one area of the associated peripheral section of the through hole adjoining one of the end faces of the at least one die part, and the contour deviating from the round target contour extends over at least one of the corresponding end face of the at least one other matrix part adjoining area of the associated peripheral section of the through hole are provided.
  • the round target contour of the at least one die part and the contour of the at least one other die part deviating from the round target contour are provided in a region of the front opening of the press die and the formation of the at least one in a region of the rear opening of the press die Die part and the at least one other die part is reversed with respect to their formation in one area of the front opening.
  • the press die has the above-described asymmetrical arrangement of the round contour compared to the deviating contour both in the area of the front opening and in the area of the rear opening of the through-hole forming the die surface. This results in the advantages already described above in the area of the two openings.
  • the press die can then be formed in that the mutually structurally identical die parts are arranged rotated by 180 degrees in relation to one another.
  • the at least two die parts between the one area of the front opening and the one area of the rear opening contain a preferably groove-shaped indentation in the respective peripheral section of the through hole on the peripheral side, so that a circumferential indentation is formed in the through hole of the press die.
  • the recess is dimensioned such that the outer tubular section of the workpieces to be pressed, which is part of a press fitting, for example, can include a receptacle, in particular a groove, for accommodating a sealing element, in particular a sealing ring, such as an O-ring.
  • the indentation of the press die accommodates the fitting with the sealing ring arranged therein.
  • a press connection can therefore be realized by means of the depression in the press die, in which an additional seal is realized by the sealing ring between the connection partners. It is advisable for the recess to be dimensioned in such a way that the receptacle with the sealing element is pressed by the pressing in such a way that the sealing element is brought into a final sealing seat.
  • the press die can be made up of at least three die parts.
  • the press die then comprises, for example, at least one, preferably three, closing points, the closing points being formed by mutually associated end faces of adjacent ones Die parts of the at least three die parts is formed and the at least three die parts each comprise a peripheral portion of the through hole, so that in a closed position of the at least three die parts at the closing points the peripheral surface of the through hole is composed on the peripheral side.
  • At least one of the die parts encompasses the round target contour over at least one area of the associated peripheral section of the through hole and at least one other of the die parts over at least one area of the associated peripheral section of the through hole encompasses the contour deviating from the round target contour , so that the circumferential sections of the through hole associated with the at least three matrix parts are asymmetrical to one another with respect to a chord formed in each case by the associated circumferential section of the through hole.
  • the at least one die part comprises the round target contour and at least two other die parts each comprise the contour deviating from the round target contour or a contour deviating from the round target contour.
  • at least two of the matrix parts comprise the round target contour and at least one other of the matrix parts comprises the contour deviating from the round target contour or a contour deviating from the round target contour.
  • the die parts each comprise a receptacle, in particular a groove section for detachable receptacle on a pressing tool.
  • the respective receptacle can be provided on an outer circumference of the associated die part.
  • the die parts are designed as interchangeable parts.
  • a fixing point or attachment point can be provided on each of the die parts, for example to accommodate a tensioning element, in particular a tensioning pin.
  • a basic die for, for example, a die for pressing round tubular portions of at least two workpieces includes a front side, a back side, and a through hole extending from the front side to the back side.
  • the rear side is arranged opposite to the front side.
  • the through hole includes a front opening at the front and a rear opening at the back.
  • the through hole includes a peripheral surface which is designed as a die surface and serves in particular as a mold for the workpieces to be pressed.
  • the press die is constructed in several parts by at least two die parts, in particular die segments, and comprises at least one, preferably two, closing points.
  • the closing points are each formed by mutually assigned end faces of mutually adjacent die parts of the at least two die parts, and the at least two die parts each preferably encompass a circumferential angle Peripheral section of the through hole, so that in a closed position of the at least two die parts at the closing points, the peripheral surface of the through hole is assembled on the peripheral side.
  • the associated peripheral section of the through-hole has a contour, in particular a clear contour, with a uniform angular peripheral length or with a substantially uniform angular peripheral length on a predominant part of the peripheral angle and on a remaining part of the circumferential angle, a proportionally greater circumferential length is formed.
  • angle-related circumferential length is to be understood in particular as the arc length in relation to the angle or circumferential angle in which the arc length spans. If, for example, the contour is a round, in particular a circular contour, the clear contour is an arc of a circle. On the circular arc, the circumferential length, ie the arc length on the clear contour, is proportional, in particular exactly proportional, to the circumferential angle that has elapsed.
  • the circumferential length formed across each die part is proportional to the circumferential angle occupied by the respective die part.
  • each die part with this shape is adjoined by a die part of the press die, in which the angle-related circumferential length varies over the entire circumferential angle.
  • the angle-related circumferential length fluctuates there periodically between a maximum value and a minimum value. The minimum value is reached at the point where the corners of the hexagon point inwards. The maximum value is reached where the corners of the hexagon point outwards.
  • the pressing tool comprises a press die, in particular at least one configuration and/or at least one embodiment of the press die described above.
  • the pressing tool can comprise at least two pressing jaws, wherein the at least two die parts of the pressing die are each associated with one of the pressing jaws.
  • the pressing jaws can be pivoted relative to one another by means of a pivot connection in order to be pivoted from an open position into a closed position.
  • the open position is used to pick up the workpiece between the die parts.
  • the die parts are in the closed position.
  • the die parts can be fastened to the respectively associated pressing jaws, in particular detachably fastened, or formed thereon. If the die parts are detachably fastened to the associated pressing jaws, the die parts are designed as interchangeable inserts.
  • the die parts can each comprise a groove section for releasably receiving the pressing tool, the respective Groove portion is provided on the outer periphery of the associated die part.
  • the pressing tool can be designed as a pressing tongs.
  • the pressing tool can also be designed as a pressing ring. If the press die is constructed in three parts, ie, for example, has at least three die parts as described above, the press tool can be a press sling.
  • a method for producing a press connection of tubular sections of at least two workpieces is provided.
  • a pressing tool of the type described above is provided.
  • the tubular sections of the workpieces are pushed into one another over an axial overlapping area.
  • the round tubular sections are then pressed against one another in the axial overlapping area by means of the pressing tool.
  • the press die is therefore made from a one-piece blank, which is divided into at least two parts after the hole with the round cross section and the hole with the angular cross section have been made, with at least one of the parts being used as a die part for the press die.
  • the division can be made by sawing or eroding and takes place along the longitudinal axis of the passage formed by the round cross-section hole and the square cross-section hole, so that the parts each comprise a peripheral portion of the passage.
  • This peripheral section forms part of a die surface of the press die.
  • the hole with the round cross section and the hole with the angular cross section are arranged coaxially to each other. In this case, the central axes of the two holes are on a common central axis.
  • the peripheral portion of the parts Due to the hole with the angular cross-section, the peripheral portion of the parts has a peripheral contour deviating from round over a region in the axial direction with respect to the longitudinal axis of the passage. During later use of the press die, this area creates a contour on the tubular sections of the workpieces to be pressed formed, which acts as an anti-twist device and favors a non-rotatable fit of the workpieces relative to one another. Due to the hole with the round cross-section, the peripheral portion of the parts has a peripheral contour over a different area in the axial direction with respect to the longitudinal axis of the passage, which is tailored to the round cross-sectional shape of the workpieces to be pressed. As a result, at least in this other area, pressing of the round-tubular sections of the workpieces to be pressed can be realized without formation of ridges or at most only slight formation of ridges.
  • a turning tool such as a turning tool
  • a turning tool can be used to shape this hole. This in turn makes it easier to introduce an undercut, an annular groove, a shoulder or a similar radial indentation into the peripheral surface of the hole, because a turning tool or the turning tool already used to form the hole can also be used for this purpose.
  • the passage can also be made if the hole is formed with the round cross-section must already be resorted to the smallest available turning tools and these turning tools a formation of a hole with a diameter of at most corresponds to the inscribed circle diameter of the hole to be made with the angular cross-section.
  • the one-piece blank provided can be in one piece, ie manufactured and/or formed from one piece.
  • the round cross-section hole may have a circular cross-section. In principle, an oval cross section is also possible.
  • the hole with the round cross section is drilled, in particular drilled using a turning tool.
  • the hole with the round cross-section can be a blind hole.
  • blind hole is to be understood in particular as a hole which is introduced into the blank to a predetermined depth without completely penetrating the blank. In contrast, with a through hole, the hole is made completely through the blank.
  • the hole with the angular cross section has, for example, a polygonal cross section.
  • angular means that the cross section has at least one, preferably several, corners. The corners can also be rounded.
  • the hole with the angular cross section can be a blind hole or a through hole.
  • the hole with the angular cross-section can be milled using a milling cutter.
  • the square cross section hole may have a hexagon shaped cross section.
  • the cross-section can also be triangular, quadrilateral, pentagonal, hexagonal, heptagonal or have a larger number of corners.
  • the corners of the angular cross section lie on a common circumference.
  • This circumference is the one given above designation “circumference diameter” determined.
  • the term “inscribed circle diameter” already mentioned above denotes the diameter of the inscribed circle.
  • the inscribed circle is present in polygonal cross-sections or polygons and describes the circle that touches all sides of the polygon on the inside.
  • a one-piece blank is provided, which comprises a front side and a rear side, preferably opposite the front side.
  • a first blind hole is drilled into the one-piece blank from the front, for example by means of a lathe tool.
  • a second blind hole is then formed in the one-piece blank from the rear, with the second blind hole extending into or on or over the first blind hole.
  • a milling cutter can be used for this.
  • the cross section of the second blind hole is preferably shaped as a hexagon.
  • the central axis of the hexagon is preferably arranged coaxially with the central axis of the first blind hole. Provision is also preferably made for the inside diameter of the hexagon to correspond or essentially correspond to the inside diameter of the first blind hole.
  • the order in which the blind holes are produced is arbitrary.
  • the second blind hole and then the first blind hole can also be made in the blank first.
  • the one-piece blank is severed into at least two parts in the direction of the central axis of the first blind hole and/or the second blind hole, the parts are then used or can be used as die parts of a press die, such as the press die described above.
  • the radial depression is designed in such a way that a workpiece, in particular a fitting, can be pressed by means of the press die, which has a bead on the peripheral side with a sealing ring accommodated therein.
  • the radial depression is arranged at an axial distance from one, preferably both, inlet openings of the passage.
  • the pressing die can be produced in such a way that a through hole is first introduced into the blank, in particular drilled, for example with a circular cross section, the diameter of this through hole being smaller than the inscribed diameter of the hole with the angular cross section. And only then the hole with the round cross section and the hole with the square cross section are formed using the through hole made in advance.
  • a further development of the method consists in providing a press die in which respectively adjacent die parts of the die parts of the press die are arranged at a 180° angle to one another.
  • the adjacent die parts are about the transverse axis transverse to the longitudinal axis of the passageway Arranged rotated by 180°.
  • figure 1 shows - in a schematic representation - a possible embodiment of a pressing tool 100 in a perspective view.
  • the pressing tool 100 has a pressing die 1 which is constructed in several parts.
  • the press die 1 comprises two die parts 8 and 9.
  • figure 2 shows the pressing tool 100 in an enlarged view in the area of the pressing die 1.
  • the pressing tool 100 is used for pressing round tubular sections of at least two workpieces.
  • the pressing tool 100 can be used to press tubular, in particular round tubular, workpieces to form a non-detachable pipe connection.
  • one of the workpieces is a pipe or pipe section and another of the workpieces is a press fitting, for example a pipe socket, which is pressed against the pipe by means of the pressing tool 100 .
  • the pressing tool 100 has two pressing jaws 110, 120, one of the pressing jaws 110 and 120 being associated with one of the die parts 8 and 9, respectively.
  • the pressing jaws 110 and 120 can be pivoted in relation to one another by means of a pivot connection 130 in order to be moved relative to one another from an open position, as is shown in FIGS figures 1 and 2 shown to be pivoted into a closed position.
  • the open position serves, for example, to accommodate the workpieces to be pressed between the die parts 8 and 9.
  • the die parts 8 and 9 are, for example, in a closed position relative to one another.
  • the swivel connection 130 can comprise at least one intermediate part 140, on which one of the pressing jaws 110 and 120 is rotatably mounted via a shaft or axis 130.1 and 130.2.
  • the die parts 8 and 9 of the press die 1 can be detachably fastened to the associated press jaws 110 and 120, respectively.
  • the matrix parts 8 and 9 can be designed as interchangeable inserts.
  • an annular groove 15 can be provided on the outer circumference of the press die 1, which is preferably formed correspondingly on each of the die parts 8 and 9 in order to insert the respective die part 8 and 9 on the associated press jaws 110 or 120 into a correspondingly provided projection 170 be able.
  • the annular groove 15 and the projection 170 secure the die parts 8 and 9 in the respectively associated pressing jaw 110 and 120 against being pushed out laterally from a fastening position on the associated pressing jaw 110 and 120, respectively.
  • At least one additional dowel pin element 180 clamps the respective die part 8 or 9 on the associated press jaw 110 or 120 in a non-positive manner or fixes it with a form fit, in order to prevent the fastening position on the associated press jaw 110 or 120 from becoming detached in the radial direction .
  • at least one fixing point 8.6 or 9.6 in particular a receiving opening for the clamping pin element 180, can be provided on the respective die part 8 or 9.
  • Die parts 8 and 9 can also be permanently connected to the respective press jaw 110 or 120, for example by the die parts 8 and 9 being formed onto the respective press jaw 110 or 120.
  • the pressing tool 100 is preferably equipped with a (in the figures 1 and 2 not shown) drive device can be coupled, in particular mechanically coupled, to bring the pressing jaws 110, 120 from the open position to the closed position.
  • the drive unit can be a manually operated drive unit or a drive unit operated by an electric motor or hydraulically or pneumatically.
  • the pressing jaws 110, 120 are moved relative to one another by the actuating force generated by the actuating device.
  • the pressing jaws 110 and 120 can each have a rear part 150 and 160, through which the pressing jaws 110 and 120 are extended backwards, in particular away from the area of the die parts 8 and 9, and which each have a lever with respect to form the articulation 130.
  • At least one coupling point for the actuating device is therefore preferably provided on each of the rear parts 150 and 160 .
  • the structure and design of the press die 1 is based on the Figures 3 to 6 described in more detail.
  • the figure 3 shows the matrix part 8 in a perspective view.
  • the figure 4 shows the matrix part 9 also in a perspective view.
  • the Figures 5 and 6 show the press die 1 with the die parts 8 and 9 in a front view ( figure 5 ) and a rear view ( figure 6 ).
  • the press die 1 comprises a front face 2, a rear face 3 preferably opposite thereto and a through hole 4 extending from the front face 2 to the rear face 3.
  • the through hole 4 comprises a front opening 5 on the front face 2 and a rear opening on the rear face 3 6 and a peripheral surface 7, which is designed as a die surface.
  • the designations "front” and “back” are chosen arbitrarily and could therefore also be opposed to each other. The same also applies to the statements “front” and “rear” in relation to the openings 5 and 6.
  • the press die 1 comprises two closing points 10 and 11.
  • the closing points 10 and 11 are respectively associated end faces 8.1, 9.1 and 8.2, 9.2 , the die parts 8, 9 are formed, with the two die parts 8, 9 each encompassing a circumferential section of the through hole 4 over a circumferential angle ⁇ 1, ⁇ 2, so that in the closed position A of the two die parts 8, 9 already described above at the closing points 10, 11 the peripheral surface 7 of the through hole 4 is composed peripherally.
  • one of the die parts 8, 9, for example the die part 8 has a round target contour 8.3 over at least one area 8.4 of the peripheral section of the through hole 4, which belongs to one of the die parts 8, 9.
  • the other matrix part, in particular the matrix part 9, on the other hand has a contour 9.3 that deviates from the round target contour 8.3 at least one area 9.4 of the peripheral section of the through hole 4, which is associated with this other die part 9.
  • the at least one area 8.4 with the round target contour 8.3 and the at least one area 9.4 with the deviating contour 9.3 are arranged in such a way that the peripheral sections of the through hole 4 associated with the two die parts 8, 9 are asymmetrical to one another with respect to one through the associated peripheral section of the through hole 4 formed chord 8.7, 9.7 are present.
  • the regions 8.3 and 9.3 are preferably arranged in each case adjacent to the end faces 8.1 and 9.1.
  • the round target contour 8.3 can be circular or have at least a section of a circular arc.
  • the contour 9.3, which deviates from the round target contour 8.3, is, for example, formed in a straight line.
  • the contour 9.3 deviating from the round target contour 8.3 forms at least one side of a polygon, with at least part of the polygon forming the peripheral section of the through hole 4, which is encompassed by the associated die part 9.
  • the polygon is a hexagon, in particular a rounded hexagon, and the peripheral section of the through hole 4, which is formed by the associated matrix part 9, comprises three sides of the hexagon, as can be seen in particular from FIG figure 5 is evident.
  • the inside radius of the hexagon corresponds to the inside radius of the round contour 9.3 in relation to the central axis 19 of the press die 1.
  • the round target contour 8.3 can be interrupted by an area 8.5 with a further contour 8.8 that deviates therefrom.
  • the other contour 8.8 can also be rectilinear be trained contour.
  • the further contour 8.8 is arranged spaced parallel to the chord 8.7 of the associated matrix part 8.
  • the matrix part 9 with the further contour 8.8 can also be described in a generalized manner in that the associated peripheral section of the through hole 4 has a contour with a uniform angle-related peripheral length on a predominant part of the peripheral angle ⁇ 1 and a proportionately larger peripheral length is formed on a remaining part of the peripheral angle ⁇ 1 is.
  • the angle-related circumferential length relates to the arc length based on the circumferential angle in which the arc length of the matrix part 8 spans in each case.
  • the round target contour 8.3 and the contour 9.3 deviating from it are preferably provided in a region 16 of the front opening 5 of the press die 1 and in a region 17 of the rear opening 6 of the press die 1 the design of the die parts 8 and 9 is opposite to their design in the one Front opening area 5 reversed.
  • the configuration of the matrix parts 8 and 9 results in the area 17 of the rear opening 6, as in FIG figure 6 is shown.
  • the die parts 8 and 9 are therefore preferably designed as identical parts.
  • the peripheral surface 7 of the press die 1 serving as the die surface preferably has an annular depression 12, in particular an annular groove, between the area 16 of the front opening 5 and the area 17 of the rear opening 6.
  • the recess 12 serves to enable a workpiece, such as a press fitting, to be pressed, which contains a peripheral bead with a sealing ring accommodated therein.
  • the recess 12 is preferred to the extent Dimensions of this circumferential bead adapted to the workpiece.
  • the peripheral surface 7 of the press die can be offset between the one area 16 of the front opening 5 and the one area 17 of the rear opening 6, so that the area 16 and the area 17 each have a constriction, i.e. a projection extending inwards in the radial direction relative to the circumferential surface 7 of the press die 1, ie the surfaces 20, 21 adjoining the regions 16, 17 are preferably set back slightly radially.
  • figure 7 shows another possible embodiment of a press die 1.1.
  • the press die 1.1 differs from the press die 1 of Figures 3 to 6 among other things, in that the press die 1.1 is made up of three die parts 28, 29, 30.
  • the die parts 28, 29, 30 can also be referred to as the first die part 28, the second die part 29 and the third die part 30.
  • the press die 1.1 is shown in a view of the front side 2.
  • figure 8 shows the press die 1.1 in a view of the back 3.
  • the press die 1.1 comprises three closing points 12, 13, 14, with the closing points 12, 13, 14 each having end faces 28.2, 29.1 or 29.2, 30.1 or 30.2, 28.1 is formed by mutually adjacent die parts 28, 29 or 29, 30 or 30, 28 of the three die parts 28, 29, 30 and the die parts 28, 29, 30 each comprise a peripheral section of the through hole 4, so that in the closed position A of the Die parts 28, 29, 30 at the closing points 12, 13, 14, the peripheral surface 7 of the through hole 4 is assembled on the peripheral side.
  • one of the die parts 28, 29, 30, in particular the die part 28 has a round target contour 28.3 over at least one area 28.4 of the associated peripheral section of the through hole 4.
  • the other of the die parts 28, 29, 30, in particular the die parts 29, 30, each have a contour 29.3 or 30.3 that deviates from the round target contour 28.3 over at least one area 29.4 or 30.4 of the associated peripheral section of the through hole 4, so that the three Die parts 28, 29 and 30 associated circumferential sections of the through hole 4 are asymmetrical to one another in a chord 28.7, 29.7, 30.7 formed by the associated circumferential section.
  • the round target contour 28.3 can also be circular in the press die 1.1.
  • the contour 29.3 or 30.3 deviating therefrom is preferably formed in a straight line, for example formed by part of a polygon.
  • the deviating contour 29.3 or 30.3 is preferably at least partially formed by three sides of a hexagon.
  • the round target contour 8.3 can be interrupted by an area 28.5 with a further contour 28.8 that deviates therefrom.
  • the additional contour 28.8 can also be a straight contour.
  • the die parts 28, 29, 30 of the press die 1.1 are preferably designed as identical parts. This results in terms of the back 3 of the press die 1, the configuration, which from the figure 8 is evident.
  • reference to a particular aspect, embodiment or configuration means that a a particular feature or characteristic described in connection with the particular aspect or embodiment or configuration is at least included therein, but need not necessarily be included in all aspects or embodiments or configurations of the invention. It is expressly understood that any combination of the various features and/or structures and/or properties described in relation to the invention are encompassed by the invention unless expressly or clearly contradicted by the context.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Claims (12)

  1. Matrice de pressage (1) pour un outil de presse (100) pour le pressage de sections tubulaires d'au moins deux pièces à usiner, la matrice de pressage (1) comportant un côté avant (2), un côté arrière (3) et un trou traversant (4) s'étendant à partir du côté avant (2) jusqu'au côté arrière (3), le trou traversant (4) comportant une ouverture avant (5) au niveau du côté avant (2) et une ouverture arrière (6) au niveau du côté arrière (3) et le trou traversant (4) comportant en outre une surface circonférentielle (7), laquelle est formée comme une surface de matrice, la matrice de pressage (1) étant construite en plusieurs parties par le biais d'au moins deux parties de matrice (8, 9) et comportant au moins un, de préférence deux points de fermeture (10, 11), les points de fermeture (10, 11) étant formés respectivement par des surfaces frontales (8.1, 8.2, 9.1, 9.2), associées les unes aux autres, de parties de matrice (8, 9), adjacentes les unes aux autres, des au moins deux parties de matrice (8, 9) et les au moins deux parties de matrice (8, 9) comportant respectivement une section circonférentielle du trou traversant (4), de sorte que, dans une position de fermeture (A) des au moins deux parties de matrice (8, 9) au niveau des points de fermeture (10, 11), la surface circonférentielle (7) du trou traversant (4) est assemblée du côté circonférentiel, au moins l'une des parties de matrice (8, 9) comportant un contour cible circulaire (8.3) sur au moins une région (8.4) de la section circonférentielle associée du trou traversant (4), caractérisée en ce que l'au moins une autre partie de matrice (9) comporte un contour (9.3) différent du contour cible circulaire (8.3) sur au moins une région (9.4) de la section circonférentielle associée du trou traversant (4), de sorte que les sections circonférentielles, associées aux au moins deux parties de matrice (8, 9), du trou traversant (4) soient prévues de manière asymétrique les unes par rapport aux autres par rapport à une corde (8.7, 9.7) formée respectivement par la section circonférentielle associée du trou traversant (4).
  2. Matrice de pressage selon la revendication 1, le contour (9.3) différent du contour cible circulaire (8.3) étant rectiligne et formant au moins un côté d'un polygone, au moins une partie du polygone formant la section circonférentielle du trou traversant (4), qui est entourée par l'au moins une autre partie de matrice (9).
  3. Matrice de pressage selon la revendication 1 ou 2, le contour cible circulaire (8.3) étant interrompu par une région (8.5) présentant un autre contour (8.8) différent de celui-ci, lequel autre contour est rectiligne et en particulier est disposé de manière espacée de la corde (8.7) de l'au moins une partie de matrice (8) associée et parallèlement à celle-ci.
  4. Matrice de pressage selon l'une des revendications précédentes, le contour cible circulaire (8.3) étant prévu sur au moins une région (8.4) de la section circonférentielle associée du trou traversant (4) qui est adjacente à l'une des surfaces frontales (8.1, 8.2) de l'au moins une partie de matrice (8) et le contour (9.3) différent du contour cible circulaire (8.3) étant prévu sur au moins une région (9.4) de la section circonférentielle associée du trou traversant (4) qui est adjacente à la surface frontale (9.1) correspondante de l'au moins une autre partie de matrice (9).
  5. Matrice de pressage selon l'une des revendications précédentes, le contour cible circulaire (8.3) de l'au moins une partie de matrice (8) et le contour (9.3) différent du contour cible circulaire (8.3) de l'au moins une autre partie de matrice (9) étant prévus dans une région de l'ouverture avant (5) de la matrice de pressage (1) et, dans une région de l'ouverture arrière (6) de la matrice de pressage (1), la formation de l'au moins une partie de matrice (8) et de l'au moins une autre partie de matrice (9) étant inversée par rapport à sa formation dans la région de l'ouverture avant (5), les au moins deux parties de matrice (8, 9) comprenant un renfoncement (12) en forme de rainure entre la région de l'ouverture avant (5) et la région de l'ouverture arrière (6) dans la section circonférentielle respective du trou traversant (4) du côté circonférentiel.
  6. Matrice de pressage selon la revendication 5, l'au moins une partie de matrice (8) et l'au moins une autre partie de matrice (9) étant des parties identiques.
  7. Matrice de pressage selon l'une des revendications 1 à 6, la matrice de pressage (1.1) étant construite en plusieurs parties par le biais d'au moins trois parties de matrice (28, 29, 30) et comportant en outre au moins un, de préférence trois points de fermeture (12, 13, 14), les points de fermeture (12, 13, 14) étant formés respectivement par des surfaces frontales (28.2, 29.1 ; 29.2, 30.1 ; 30.2, 28.1), associées les unes aux autres, de parties de matrice (28, 29 ; 29, 30 ; 30, 28), adjacentes les unes aux autres, des au moins trois parties de matrice (28, 29, 30) et les au moins trois parties de matrice (28, 29, 30) comportant respectivement une section circonférentielle du trou traversant (4), de sorte que, dans une position de fermeture (A) des au moins trois parties de matrice (28, 29, 30), au niveau des points de fermeture (12, 13, 14), la surface circonférentielle (7) du trou traversant (4) est assemblée du côté circonférentiel, au moins l'une des parties de matrice (28, 29, 30) comportant le contour cible circulaire (28.3) sur au moins une région (28.4) de la section circonférentielle associée du trou traversant (4), et au moins une autre des parties de matrice (28, 29, 30) comportant le contour (29.3) différent du contour cible circulaire (28.3) sur au moins une région (29.4) de la section circonférentielle associée du trou traversant (4), de sorte que les sections circonférentielles, associées aux au moins trois parties de matrice (28, 29, 30), du trou traversant (4) soient prévues de manière asymétrique les unes par rapport aux autres par rapport à une corde (28.7, 29.7, 30.7) formée respectivement par la section circonférentielle associée.
  8. Matrice de pressage selon la revendication 7, l'au moins une partie de matrice (28) comportant le contour cible circulaire (28.3) et au moins deux autres des parties de matrice (28, 29, 30) comportant respectivement le contour (29.3, 30.3) différent du contour cible circulaire (28.3).
  9. Outil de presse (100) pour le pressage de sections tubulaires d'au moins deux pièces à usiner, l'outil de presse (100) comportant une matrice de pressage (1 ; 1.1 ; 1.2) selon l'une des revendications précédentes.
  10. Procédé permettant de produire une liaison par pressage de sections tubulaires d'au moins deux pièces à usiner, comportant les étapes de :
    i) fourniture d'un outil de presse (100) selon la revendication 9 ;
    ii) emboîtement des sections tubulaires des pièces à usiner sur une région de chevauchement axiale ;
    iii) pressage des sections tubulaires dans la région de chevauchement axiale au moyen de l'outil de presse (100).
  11. Procédé permettant de produire une matrice de pressage (1 ; 1.1) selon l'une des revendications 1 à 8, comportant les étapes suivantes :
    i) fourniture d'une ébauche d'un seul tenant ;
    ii) introduction de deux trous dans l'ébauche de telle sorte qu'un passage (4) à travers l'ébauche soit produit à travers les trous et que l'un des trous forme respectivement une ouverture d'entrée (5 ; 6) du passage (4), l'un des trous présentant une section transversale circulaire et l'autre trou présentant une section transversale polygonale et le trou doté de la section transversale circulaire présentant un diamètre intérieur, lequel est plus grand ou de même dimension que le diamètre circonférentiel intérieur du trou doté de la section transversale polygonale ;
    iii) division de l'ébauche en au moins deux parties dans la direction de l'axe longitudinal (19) du passage (4) ;
    iv) fourniture d'au moins l'une des au moins deux parties en tant que partie de matrice (8, 9 ; 28, 29, 30) pour la matrice de pressage (1 ; 1.1).
  12. Procédé selon la revendication 11, dans lequel au moins un renfoncement (18) radial est introduit du côté circonférentiel dans le trou doté de la section transversale circulaire.
EP18773928.9A 2017-09-04 2018-08-31 Matrice de pressage pour un outil de presse pour le pressage de sections tubulaires de pièces à usiner Active EP3600776B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017120327.3A DE102017120327A1 (de) 2017-09-04 2017-09-04 Pressmatrize für ein Presswerkzeug zum Verpressen von rundrohrförmigen Werkstückabschnitten, Presswerkzeug, Verfahren zur Herstellung einer Pressverbindung sowie Verfahren zur Herstellung einer Pressmatrize
DE102017123362 2017-10-09
PCT/DE2018/100745 WO2019042500A1 (fr) 2017-09-04 2018-08-31 Matrice de pressage pour un outil de presse pour le pressage de sections tubulaires de pièces à usiner

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EP3600776A1 EP3600776A1 (fr) 2020-02-05
EP3600776B1 true EP3600776B1 (fr) 2022-07-20

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US (1) US20210008611A1 (fr)
EP (1) EP3600776B1 (fr)
AU (1) AU2018325983B2 (fr)
DE (1) DE112018004912A5 (fr)
WO (1) WO2019042500A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319376A1 (de) * 2003-04-30 2004-11-25 Uponor Innovation Ab Werkzeug für Fittinge für den Anschluss von Rohren
EP3381618A1 (fr) * 2017-03-29 2018-10-03 Viega Technology GmbH & Co. KG Moyen de pression destiné à presser une pièce de raccordement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013106870A1 (de) * 2013-07-01 2015-01-22 Rothenberger Ag Presswerkzeug zum Verbinden von Werkstücken mittels Umformen
EP3100827B1 (fr) * 2015-06-02 2021-01-20 Geberit International AG Système de levier de presse doté d'un levier de presse et d'une mâchoire de presse

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319376A1 (de) * 2003-04-30 2004-11-25 Uponor Innovation Ab Werkzeug für Fittinge für den Anschluss von Rohren
EP3381618A1 (fr) * 2017-03-29 2018-10-03 Viega Technology GmbH & Co. KG Moyen de pression destiné à presser une pièce de raccordement

Also Published As

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DE112018004912A5 (de) 2020-06-10
AU2018325983B2 (en) 2024-02-01
WO2019042500A9 (fr) 2020-03-05
AU2018325983A1 (en) 2020-03-12
US20210008611A1 (en) 2021-01-14
EP3600776A1 (fr) 2020-02-05
WO2019042500A1 (fr) 2019-03-07

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