EP4186613B1 - Shaping jaw of a round kneading device for forming a plastically deformable workpiece and round kneading tool with shaping jaws - Google Patents

Shaping jaw of a round kneading device for forming a plastically deformable workpiece and round kneading tool with shaping jaws Download PDF

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Publication number
EP4186613B1
EP4186613B1 EP21211327.8A EP21211327A EP4186613B1 EP 4186613 B1 EP4186613 B1 EP 4186613B1 EP 21211327 A EP21211327 A EP 21211327A EP 4186613 B1 EP4186613 B1 EP 4186613B1
Authority
EP
European Patent Office
Prior art keywords
shaping
securing element
orientation
receptacle
main jaw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21211327.8A
Other languages
German (de)
French (fr)
Other versions
EP4186613C0 (en
EP4186613A1 (en
Inventor
Sascha VÖGELE
Nadezda Missal
Serjosha Heinrichs
Max Olaf JANDT
Jean-Marc SCHEER
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.)
Felss Systems GmbH
Original Assignee
Felss Systems GmbH
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 Felss Systems GmbH filed Critical Felss Systems GmbH
Priority to EP21211327.8A priority Critical patent/EP4186613B1/en
Priority to CN202280079371.6A priority patent/CN118338976A/en
Priority to PCT/EP2022/082901 priority patent/WO2023099296A1/en
Priority to KR1020247019936A priority patent/KR20240116747A/en
Priority to MX2024006582A priority patent/MX2024006582A/en
Publication of EP4186613A1 publication Critical patent/EP4186613A1/en
Application granted granted Critical
Publication of EP4186613C0 publication Critical patent/EP4186613C0/en
Publication of EP4186613B1 publication Critical patent/EP4186613B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers
    • B21J7/145—Forging machines working with several hammers the hammers being driven by a rotating annular driving member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/18—Forging machines working with die jaws, e.g. pivoted, movable laterally of the forging or pressing direction, e.g. for swaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers
    • B21J7/16—Forging machines working with several hammers in rotary arrangements

Definitions

  • the invention also relates to a rotary swaging tool with molding jaws of the aforementioned type.
  • rotary swaging is a pressure forming process, specifically free forming.
  • a rotary swaging tool has mold jaws which are arranged on opposite sides of a workpiece to be formed and which are moved in the radial direction of the workpiece axis with mutually directed movements in order to form the workpiece.
  • the mold jaws apply shaping to the workpiece Surfaces whose geometry is coordinated with the workpiece geometry to be manufactured and where the required forming forces are introduced into the workpiece.
  • the mold jaws are guided in slot-shaped recesses in a shaft of a kneading machine provided with the rotary kneading tool.
  • compensating plates or wedges that are movable relative to the mold jaws, by means of which the mold jaws can be advanced in the radial direction of the workpiece axis.
  • the previously known mold jaws as a whole have high-quality material properties, which are particularly necessary for a functionally reliable introduction of the forming forces to be applied into the workpiece to be machined.
  • the previously known mold jaws are made of hard metal. Due to their consistently high-quality material properties, the previously known mold jaws are relatively expensive.
  • the material properties of the mold jaws are primarily tailored to their forming function.
  • a correspondingly dimensioned hardness of the previously known mold jaws is disadvantageous in that it causes relatively strong wear during relative movements of the mold jaws and components in contact with them, in particular on wedges for radial adjustment of the mold jaws.
  • the object of the present invention is to avoid the above disadvantages.
  • this object is achieved by the molding jaw according to claim 1 and by the rotary swaging tool according to claim 15.
  • the shaping surface of the mold jaw is provided on a mold body that is structurally separate from the jaw base body of the mold jaw.
  • the jaw base body and the molded body of the mold jaw can be configured independently of one another.
  • Hard metal is preferred as the material for the molded body, while a less abrasive and/or a lower quality and therefore more cost-effective material such as hardened steel or powder metallurgical SPM steel is suitable for the jaw base body.
  • the molded body is fitted into a receptacle provided for this purpose in the jaw base body and is thereby defined relative to the jaw base body and preferably positioned without play.
  • the fit of the molded body into the jaw base body can bring about a play-free mounting of the molded body on the jaw base body on all sides or only in individual directions.
  • At least one securing element is used to fix the molded body to the jaw base body, which on the one hand rests on the outside of the molded body and on the other hand is connected to the jaw base body (claim 3).
  • Claim 4 relates to an arrangement preferred according to the invention of the securing element used to fix the molded body to the jaw base body. Due to the arrangement in a gap between a wall of the receptacle of the jaw base body on the one hand and the molded body on the other hand, the securing element does not form an interfering contour on the workpiece side of the mold jaw that could hinder workpiece machining. In addition to the securing element, a corresponding fit of the shaped body into the jaw base body can ensure a play-free storage of the molded body on the jaw base body.
  • the securing element(s) effect a play-free storage of the molded body in its longitudinal direction and perpendicular to the base of the receptacle and that the fitting of the molded body into the jaw base body is provided for play-free storage of the molded body in its transverse direction parallel to the base of the receptacle .
  • the molded body of the molded jaw according to the invention can be firmly connected to the jaw base body.
  • a detachable connection of the molded body to the jaw base body is preferred (claim 5). Due to this feature of the invention, it is possible, for example, to replace a worn shaped body with a new shaped body with little effort.
  • moldings with different geometries of the shaping surface can be easily attached to one and the same jaw base body.
  • a fastening screw passing through the securing element is used to releasably connect the molded body to the jaw base body and is screwed into the base of the receptacle of the jaw base body provided for the molded body.
  • the fastening screw By means of the fastening screw, the securing element is fixed in a position in which the securing element lies laterally opposite the shaped body.
  • the securing element causes, on the one hand, a contact, in particular a support, of the shaped body on the wall of the receptacle of the jaw base body on the side of the shaped body remote from the securing element and thus vertically to the thread axis of the fastening screw, play-free storage of the molded body on the wall of the receptacle of the jaw base body.
  • the fastening screw in cooperation with the securing element, prevents the molded body from lifting off from the base of the jaw base body.
  • the securing element is moved by screwing the fastening screw into the threaded opening of the jaw base body relative to the molded body along the thread axis with an infeed movement in the direction of the base of the jaw base body. Due to the infeed movement of the securing element and the wedge-shaped design of the shaped body and/or the securing element, the shaped body is placed against the wall of the receptacle of the jaw base body without play by means of the securing element on the side remote from the securing element, preferably biased against the wall of the receptacle of the jaw base body.
  • the molded body engages behind an edge of an opening in the receptacle of the jaw base body parallel to the base of the receptacle on the side of the molded body remote from the securing element. Due to this feature of the invention, the molded body mounted on the jaw base body is also secured in a form-fitting manner on its side remote from the securing element against lifting off from the base of the base of the jaw base body.
  • the end of the shaped body which engages behind the edge of the opening of the receptacle of the jaw base body has a boundary surface which is inclined towards the base of the receptacle and which is opposite an inclined surface of the jaw base body which is inclined in the same direction.
  • the shaped body can be prestressed against the jaw base body on the mutually opposite inclined surfaces.
  • the mold jaw according to the invention according to claim 8 can be flexibly configured for different applications.
  • the possibility according to the invention of reorienting the molded body relative to the jaw base body can be used, for example, to optimize the transmission of forces which have an application-related effect on the shaping surface of the molded body during workpiece processing and which are to be removed from the mold jaw into the jaw base body.
  • the molded body is rotated by 180° relative to its first orientation about an axis which runs perpendicular to the base of the receptacle provided for the molded body on the jaw base body
  • the molded body is attached to the jaw base body with the first orientation as described in claim 6. To reorient the molded body, this connection between the molded body and the jaw base body is released and the molded body is preferably rotated by 180° compared to the first orientation. On the side of the receptacle of the jaw base body on which the securing element for the first alignment was arranged during the first alignment of the molded body, the molded body is now placed against the wall of the receptacle of the jaw base body.
  • the securing element for the second alignment is arranged in a gap between the shaped body rotated through 180 ° and the wall of the receptacle and is screwed to the jaw base body by means of the fastening screw for the second alignment.
  • the fastening screw for the second alignment is screwed into a threaded opening for the second alignment that opens into the base of the jaw base body.
  • the threaded opening for the second orientation of the shaped body is spaced from the threaded opening for the first orientation of the shaped body in the longitudinal direction of the shaped body.
  • the shaped body is fastened to the jaw base body with the second orientation relative to the jaw base body with the aid of the same securing element and/or with the aid of the same fastening screw as with the first orientation (claim 10).
  • the same threaded opening on the base of the jaw base body is used to fix the shaped body with the second orientation as for fixing the shaped body with the first orientation.
  • the molded body is fixed as described in claim 6.
  • the securing element interacts with the first or with the second surface on the shaped body side.
  • two securing elements are used to connect the molded body to the jaw base body, which are arranged at the two longitudinal ends of the molded body in a gap between the molded body and the wall of the receptacle of the jaw base body (claim 12). At each of the two attachment points, the molded body is releasably connected to the jaw base body in the manner described in claim 6.
  • the jaw base body of the inventive design according to claim 14 is provided with a passage opening which opens under the molded body into the base of the receptacle of the jaw base body. If necessary, the underside of the molded body can be acted upon by means of a correspondingly designed pin-like tool through the passage opening and thereby lifted out of the receptacle of the jaw base body.
  • the passage opening on the jaw base body is provided with a thread.
  • a screw can be turned through the resulting thread opening to loosen the mold jaw and thereby a large releasing force can be exerted on the underside of the mold jaw.
  • a kneading unit 1 of a rotary kneading machine for forming plastically deformable metallic pipes has a rotary kneading tool 2 with a total of four mold jaws 3.
  • a pipe to be formed is in the Figures 1 and 2 indicated with a pipe axis 4.
  • the mold jaws 3 lie opposite each other in pairs. To form a tube, the forming jaws 3 of each pair of forming jaws are moved against one another in the radial direction of the tube axis 4.
  • the mold jaws 3 are guided in guide slots 5 of a jaw guide which is provided at one end of a shaft 6 of the kneading machine 1.
  • the forming movement of the mold jaws 3 in the direction of a workpiece to be formed is generated by a relative movement of the shaft 6 and a roller cage 7 surrounding the shaft 6 around the tube axis 4.
  • the roller cage 7 is surrounded by a wear ring 8.
  • the shaping jaws 3 are driven in the direction of the tube axis 4 via plungers 9, which are also movably guided in the guide slots 5 of the shaft 6 in the radial direction of the tube axis 4.
  • the plungers 9 are provided with a plunger head 10 which runs in a curve on the side facing away from the mold jaws 3.
  • the ram head 10 of the ram 9 comes to lie with its highest point alternately directly under a roller 11 of the roller cage 7 and between two rollers 11 of the roller cage 7. If the plunger heads 10 of the plunger 9 are arranged with their highest point directly under a roller 11, the rotary swaging tool 2 is closed. If the plunger heads 10 of the plunger 9 are between two rollers 11, the rotary swaging tool 2 is open.
  • the movements of the mold jaws 3 from the open to the closed state are carried out against the effect of a restoring force, due to which the mold jaws 3 automatically move from the closed back to the open state.
  • Wedges 12 which are arranged between each of the mold jaws 3 and the associated plunger 9, are used to adjust the stroke position of the mold jaws 3 when the rotary kneading tool 2 is closed.
  • the wedges 12 are perpendicular to the drawing plane of Figure 1 delivered relative to the mold jaws 3 and the plungers 9.
  • the mold jaw 3 has a jaw base body 13 and a mold body 14 that is structurally separate from the jaw base body 13.
  • the jaw base body 13 is made of SPM steel
  • the shaped body 14 is made of hard metal.
  • the shaped body 14 is provided on one side of the workpiece with a shaping surface 15 designed for forming a tube.
  • the mold jaw 3 shown here is designed for feed rotary kneading.
  • the shaped body 14 has an inlet side 16 and an outlet side 17 following the inlet side 16 in the longitudinal direction of the shaped body 14.
  • the shaping surface 15 is designed as an inlet cone 18.
  • the inlet cone 18 is followed in the longitudinal direction of the shaped body 14 by a calibration section 19 of the shaping surface 15.
  • the molded body 14 is releasably connected to the jaw base body 13 by means of a fastening screw 20. Details of the detachable connection of the jaw base body 13 and the molded body 14 are Figure 4 refer to.
  • FIG. 4 the molded body 14 is fitted into a receptacle 21 provided for this purpose in the jaw base body 13.
  • a wall 22 of the receptacle 21 is the molded body 14 in Figure 4 on two long sides and on the in Figure 4 immediately adjacent to the right transverse side of the shaped body 14. With its long sides, the shaped body 14 is easily mounted on the wall 22 of the receptacle 21 without any play.
  • a play-free storage of the shaped body 14 at its in Figure 4 right and on his in Figure 4 left transverse side is effected by means of a securing element 23, which is arranged on the left longitudinal end of the molded body 14 in a gap between the wall 22 of the receptacle 21 on the jaw base body 13 on the one hand and the molded body 14 on the other hand.
  • the securing element 23 is penetrated by the fastening screw 20 along a thread axis 25 of the fastening screw 20 which runs in the transverse direction of a base 24 of the receptacle 21.
  • the fastening screw 20 engages over the securing element 23 with a screw head 26 perpendicular to the thread axis 25.
  • the fastening screw 20 opens into the base 24 of the receptacle 21 of the jaw base body 13 and is coaxial with the fastening screw 20 Threaded opening or threaded hole 27 of the jaw base body 13 is screwed in.
  • the securing element 23 and the shaped body 14 lie opposite one another with a surface 28 on the securing element side and a surface 29 on the shaped body side. In the area of their mutual contact, the securing element 23 and the shaped body 14 are wedge-shaped. Accordingly, the surface 28 on the securing element side and the surface 29 on the shaped body side are inclined along the thread axis 25 against the thread axis 25, with both the surface 28 on the securing element side and the surface 29 on the shaped body side approaching the base 24 of the receptacle 21 of the jaw base body 13 towards the thread axis 25 .
  • the shaped body 14 is prestressed by means of the securing element 23 on the side remote from the securing element 23 against the wall 22 of the receptacle 21 of the jaw base body 13 and thereby in the longitudinal direction of the shaped body 14 stored on the jaw base body 13 without play.
  • the shaped body 14 is supported without play on the wall 22 of the receptacle 21 via the securing element 23.
  • the shaped body 14 is pressed against the base 24 of the receptacle 21 of the jaw base body 13 by the securing element 23.
  • the jaw base body 13 has, at a distance from the threaded bore 27, a passage opening 30 which opens under the molded body 14 into the base 24 of the receptacle 21 of the jaw base body 13.
  • the passage opening 30 is used when dismantling the molded body 14. After loosening the fastening screw 20 and removing the securing element 23, the underside of the shaped body 14 is acted upon by a pin-like tool through the passage opening 30. Because of When the pin-like tool is applied, the molded body 14 is lifted out of the receptacle 21 of the jaw base body 13.
  • the shaped body 14 and the wall 22 of the receptacle 21 of the jaw base body 13 run on the in Figure 4
  • the molded body 14 on its side remote from the securing element 23, engages behind an edge of an opening of the receptacle 21 opposite the base 24 of the receptacle 21 of the jaw base body 13 with a second surface 29a on the molded body side, parallel to the base 24 the receptacle 21.
  • the shaped body 14 mounted on the jaw base body 13 is also positively secured on its side remote from the securing element 23 against lifting off from the base 24 of the receptacle 21 of the jaw base body 13.
  • the molded body 14 provided with the second surface 29a on the molded body side can be used except with the in Figure 4 shown orientation with a second orientation relative to the jaw base body 13 releasably connect to the jaw base body 13.
  • the shaped body 14 With the second orientation, the shaped body 14 is rotated by 180° compared to the first orientation shown.
  • the inlet side 16 and the outlet side 17 of the shaped body 14 are interchanged with each other when the shaped body 14 is aligned differently.
  • the molded body 14 can be releasably fixed to the jaw base body 13 by means of the fastening screw 20 and the securing element 23.
  • FIGs 5a and 5b is a molded body 14 of a mold jaw 3a with a first ( Figure 5a ) and with a second orientation ( Figure 5b ) compared to a jaw base body 13 shown.
  • a reorientation of the molded body 14 relative to the jaw base body 13 is carried out, for example, in order to optimize the transmission of the forces on the mold jaw 3a, which act on a shaping surface 15 of the molded body 14 in an application-related manner during workpiece machining and which are transferred from the mold jaw 14 into the jaw base body 13 are.
  • the mold jaw 3a can be used instead of the one in the Figures 3 and 4 shown mold jaw 3 on the kneading machine 1 according to Figures 1 and 2 to be built in.
  • the detachable connection of the molded body 14 to the jaw base body 13 is in Figure 5a illustrated first orientation of the molded body 14 is produced in the same way as the detachable connection of the molded body 14 to the jaw base body 13 in the Figures 3 and 4 .
  • the molded body 14 On the side of the receptacle 21 on which the securing element 23 was arranged when the molded body 14 was first aligned, the molded body 14 is now placed against the wall 22 of the receptacle 21 of the jaw base body 13.
  • the securing element for the second orientation On the opposite side of the receptacle 21, in a gap between the shaped body 14 rotated through 180 ° and the wall 22 of the receptacle 21 of the jaw base body 13, the securing element for the second orientation, in this case already in Figure 5a provided securing element 23, arranged and screwed to the jaw base body 13 by means of the fastening screw 20, which is also used as a fastening screw for the second alignment.
  • the fastening screw 20 is screwed into a threaded opening 27a opening into the base 24 of the receptacle 21 of the jaw base body 13 for the second alignment.
  • the threaded opening 27a for the second orientation of the shaped body 14 is spaced from the threaded opening 27 for the first orientation of the shaped body 14 in its longitudinal direction.
  • the securing element 23 is supported with the securing element-side surface 28 on the shaped body-side surface 29 of the shaped body 14.
  • the Shaped body 14 at the in Figure 5b left side of the molded body 14 is biased against the wall 22 of the receptacle 21 of the jaw base body 13.
  • the threaded opening 27a can be used when dismantling the molded body 14 and accordingly form a passage opening 30a of the jaw base body 13 which opens under the molded body 14.
  • the threaded opening 27 can be used as a correspondingly usable passage opening 30b of the jaw base body 13.
  • the passage openings 30a, 30b are provided with a thread on the opening wall.
  • a screw can therefore be turned from the outside through the passage openings 30a, 30b until the leading end of the screw acts on the underside of the shaped body 14 to be dismantled.
  • a large releasing force can be exerted on the underside of the molded body 14.
  • Figure 6 shows a mold jaw 3b, which is also for installation on the in the Figures 1 and 2 kneading unit 1 shown is formed.
  • a molded body 14 of the mold jaw 3b is at its in Figure 6 left side with a jaw base body 13 of the mold jaw 3b detachably connected in the same way as the mold jaw 14 with the jaw base body 13 in the Figures 3 and 4 .
  • the further securing element 43 is on the side of the shaped body 14 remote from the securing element 23 in a gap between the wall 22 Receptacle 21 of the jaw base body 13 on the one hand and the molded body 14 on the other hand arranged and mounted on the wall 22 of the receptacle 21 of the jaw base body 13 on the one hand and on the molded body 14 on the other hand.
  • a further fastening screw 40 is provided in addition to the fastening screw 20.
  • the further fastening screw 40 passes through the further securing element 43 along a further thread axis 45 of the further fastening screw 40 which runs in the transverse direction of the base 24 of the receptacle 21 of the jaw base body 13.
  • the further fastening screw 40 engages over the further securing element 43 with a further screw head 46 in the transverse direction of the further thread axis 45.
  • the further fastening screw 40 is along the further thread axis 45 in a further thread opening 47 which opens into the base 24 of the receptacle 21 and is coaxial with the further fastening screw 40 of the jaw base body 13 is screwed in.
  • the further securing element 43 is supported with a further securing element-side surface 48 on a further shaped body-side surface 49 of the shaped body 14.
  • the further surface 48 on the securing element side and the further surface 49 on the shaped body side run along the further thread axis 45 and lie opposite one another perpendicular to the further thread axis 45.
  • Both the further surface 48 on the securing element side and the further surface 49 on the shaped body side are designed in the manner of a wedge surface and are inclined towards the further thread axis 45. Both wedge surfaces approach the base 24 of the receptacle 21 towards the further thread axis 45.
  • the molded body 14 of the mold jaw 3b can also be attached to the jaw base body 13 with two different orientations relative to the jaw base body 13, the molded body 14 being rotated by 180° with the second orientation relative to the first orientation.
  • both the surface 29 on the molded body side and the further surface 49 on the molded body side are designed to cooperate with the securing element 23 and the further securing element 43.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Forging (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

Die Erfindung betrifft eine Formbacke eines Rundknetwerkzeugs zum Umformen eines plastisch verformbaren, vorzugsweise metallischen, Werkstücks,

  • mit einem Backengrundkörper sowie
  • mit einer die Formbacke an einer Werkstückseite der Formbacke begrenzenden und zur Umformung eines Werkstücks ausgebildeten formgebenden Fläche.
The invention relates to a molding jaw of a rotary swaging tool for forming a plastically deformable, preferably metallic, workpiece,
  • with a jaw base body as well
  • with a shaping surface delimiting the molding jaw on a workpiece side of the molding jaw and designed for forming a workpiece.

Die Erfindung betrifft außerdem ein Rundknetwerkzeug mit Formbacken der vorgenannten Art.The invention also relates to a rotary swaging tool with molding jaws of the aforementioned type.

Gemäß DIN 8583 handelt es sich beim Rundkneten um ein Verfahren des Druckumformens, im Einzelnen des Freiformens. Ein Rundknetwerkzeug weist Formbacken auf, die an einander gegenüberliegenden Seiten eines umzuformenden Werkstücks angeordnet sind und die zur Umformung des Werkstücks mit gegeneinander gerichteten Bewegungen in radialer Richtung der Werkstückachse bewegt werden. Dabei beaufschlagen die Formbacken das Werkstück mit formgebenden Flächen, deren Geometrie auf die zu fertigende Werkstückgeometrie abgestimmt ist und an denen die erforderlichen Umformkräfte in das Werkstück eingeleitet werden. Bei ihren Bewegungen in radialer Richtung der Werkstückachse sind die Formbacken in schlitzförmigen Aussparungen einer Welle eines mit dem Rundknetwerkzeug versehenen Knetwerks geführt. An der von dem Werkstück abliegenden Seite der Formbacken befinden sich Ausgleichsplatten oder relativ zu den Formbacken bewegliche Keile, mittels derer die Formbacken in radialer Richtung der Werkstückachse zugestellt werden können.According to DIN 8583, rotary swaging is a pressure forming process, specifically free forming. A rotary swaging tool has mold jaws which are arranged on opposite sides of a workpiece to be formed and which are moved in the radial direction of the workpiece axis with mutually directed movements in order to form the workpiece. The mold jaws apply shaping to the workpiece Surfaces whose geometry is coordinated with the workpiece geometry to be manufactured and where the required forming forces are introduced into the workpiece. During their movements in the radial direction of the workpiece axis, the mold jaws are guided in slot-shaped recesses in a shaft of a kneading machine provided with the rotary kneading tool. On the side of the mold jaws remote from the workpiece there are compensating plates or wedges that are movable relative to the mold jaws, by means of which the mold jaws can be advanced in the radial direction of the workpiece axis.

Gattungsgemäßer Stand der Technik ist offenbart in DE 20 2009 003 703 U1 . Dieses Dokument betrifft ein Rundknetwerkzeug mit Formbacken, die einen Grundkörper und eine mit dem Grundkörper einteilig und materialeinheitlich ausgeführte formgebende Fläche zur Beaufschlagung eines umzuformenden Werkstücks aufweisen.Generic prior art is disclosed in DE 20 2009 003 703 U1 . This document relates to a rotary swaging tool with molding jaws which have a base body and a shaping surface that is made in one piece with the base body and made of the same material for acting on a workpiece to be formed.

Aufgrund der einteiligen und materialeinheitlichen Ausführung weisen die vorbekannten Formbacken in ihrer Gesamtheit hochwertige Materialeigenschaften auf, die insbesondere für eine funktionssichere Einleitung der aufzubringenden Umformkräfte in das zu bearbeitende Werkstück erforderlich sind. In entsprechenden Anwendungsfällen sind die vorbekannten Formbacken aus Hartmetall gefertigt. Aufgrund ihrer durchgängig hochwertigen Materialeigenschaften sind die vorbekannten Formbacken verhältnismäßig kostspielig. Außerdem sind die Materialeigenschaften der Formbacken vorrangig auf deren Umformfunktion abgestimmt. Etwa eine entsprechend bemessene Härte der vorbekannten Formbacken ist aber insofern von Nachteil, als sie einen verhältnismäßig starken Verschleiß bei Relativbewegungen der Formbacken und damit in Kontakt befindlicher Bauteile, insbesondere an Keilen zur radialen Verstellung der Formbacken, verursacht.Due to the one-piece and uniform material design, the previously known mold jaws as a whole have high-quality material properties, which are particularly necessary for a functionally reliable introduction of the forming forces to be applied into the workpiece to be machined. In corresponding applications, the previously known mold jaws are made of hard metal. Due to their consistently high-quality material properties, the previously known mold jaws are relatively expensive. In addition, the material properties of the mold jaws are primarily tailored to their forming function. However, a correspondingly dimensioned hardness of the previously known mold jaws is disadvantageous in that it causes relatively strong wear during relative movements of the mold jaws and components in contact with them, in particular on wedges for radial adjustment of the mold jaws.

Die vorstehenden Nachteile zu vermeiden, ist Aufgabe der vorliegenden Erfindung.The object of the present invention is to avoid the above disadvantages.

Erfindungsgemäß gelöst wird diese Aufgabe durch die Formbacke gemäß Patentanspruch 1 und durch das Rundknetwerkzeug gemäß Patentanspruch 15.According to the invention, this object is achieved by the molding jaw according to claim 1 and by the rotary swaging tool according to claim 15.

Im Falle der Erfindung ist die formgebende Fläche der Formbacke an einem von dem Backengrundkörper der Formbacke baulich getrennten Formkörper vorgesehen. Infolge der baulichen Trennung können der Backengrundkörper und der Formkörper der Formbacke unabhängig voneinander konfiguriert werden. Insbesondere besteht die Möglichkeit, den Backengrundkörper und den Formkörper aus unterschiedlichen Werkstoffen zu fertigen. Als Werkstoff für den Formkörper wird Hartmetall bevorzugt, während für den Backengrundkörper ein weniger abrasiver und/oder ein geringerwertiger und folglich kostengünstigerer Werkstoff wie etwa gehärteter Stahl oder pulvermetallurgischer SPM Stahl in Frage kommt.In the case of the invention, the shaping surface of the mold jaw is provided on a mold body that is structurally separate from the jaw base body of the mold jaw. As a result of the structural separation, the jaw base body and the molded body of the mold jaw can be configured independently of one another. In particular, it is possible to manufacture the jaw base body and the shaped body from different materials. Hard metal is preferred as the material for the molded body, while a less abrasive and/or a lower quality and therefore more cost-effective material such as hardened steel or powder metallurgical SPM steel is suitable for the jaw base body.

Besondere Ausführungsarten der Formbacke gemäß Patentanspruch 1 und des Rundknetwerkzeugs gemäß Patentanspruch 15 ergeben sich aus den abhängigen Patentansprüchen 2 bis 14.Special embodiments of the molding jaw according to claim 1 and the rotary swaging tool according to claim 15 result from the dependent claims 2 to 14.

Im Falle der Erfindungsbauart gemäß Patentanspruch 2 ist der Formkörper in eine hierfür vorgesehene Aufnahme des Backengrundkörpers eingepasst und dadurch gegenüber dem Backengrundkörper definiert und vorzugsweise spielfrei positioniert.In the case of the inventive design according to claim 2, the molded body is fitted into a receptacle provided for this purpose in the jaw base body and is thereby defined relative to the jaw base body and preferably positioned without play.

Die Einpassung des Formkörpers in den Backengrundkörper kann eine spielfreie Lagerung des Formkörpers an dem Backengrundkörper allseitig oder nur in einzelnen Richtungen bewirken.The fit of the molded body into the jaw base body can bring about a play-free mounting of the molded body on the jaw base body on all sides or only in individual directions.

Zur Fixierung des Formkörpers an dem Backengrundkörper dient in weiterer vorteilhafter Ausgestaltung der Erfindung wenigstens ein Sicherungselement, das einerseits an der Außenseite des Formkörpers anliegt und andererseits mit dem Backengrundkörper verbunden ist (Patentanspruch 3). Infolge der Lagerung an der Außenseite des Formkörpers bedarf es zu dessen Fixierung keiner aufwändigen Bearbeitung des Formkörpers. Insbesondere müssen in den Formkörper keine Befestigungsbohrungen eingebracht werden, deren Herstellung sich aufgrund der Härte des Formkörperwerkstoffs aufwändig gestalten würde.In a further advantageous embodiment of the invention, at least one securing element is used to fix the molded body to the jaw base body, which on the one hand rests on the outside of the molded body and on the other hand is connected to the jaw base body (claim 3). As a result of the storage on the outside of the molded body, no complex processing of the molded body is required to fix it. In particular, no fastening holes need to be made in the molded body, the production of which would be complicated due to the hardness of the molded body material.

Patentanspruch 4 betrifft eine erfindungsgemäß bevorzugte Anordnung des zur Fixierung des Formkörpers an dem Backengrundkörper dienenden Sicherungselements. Aufgrund der Anordnung in einem Spalt zwischen einer Wand der Aufnahme des Backengrundkörpers einerseits und dem Formkörper andererseits bildet das Sicherungselement an der Werkstückseite der Formbacke keine Störkontur aus, die eine Werkstückbearbeitung behindern könnte. Für eine spielfreie Lagerung des Formkörpers an dem Backengrundkörper kann zusätzlich zu dem Sicherungselement eine entsprechende Einpassung des Formkörpers in den Backengrundkörper sorgen. Denkbar ist beispielsweise, dass das oder die Sicherungselemente eine spielfreie Lagerung des Formkörpers in dessen Längsrichtung und senkrecht zu dem Grund der Aufnahme bewirken und dass die Einpassung des Formkörpers in den Backengrundkörper zur spielfreien Lagerung des Formkörpers in dessen Querrichtung parallel zu dem Grund der Aufnahme vorgesehen ist.Claim 4 relates to an arrangement preferred according to the invention of the securing element used to fix the molded body to the jaw base body. Due to the arrangement in a gap between a wall of the receptacle of the jaw base body on the one hand and the molded body on the other hand, the securing element does not form an interfering contour on the workpiece side of the mold jaw that could hinder workpiece machining. In addition to the securing element, a corresponding fit of the shaped body into the jaw base body can ensure a play-free storage of the molded body on the jaw base body. It is conceivable, for example, that the securing element(s) effect a play-free storage of the molded body in its longitudinal direction and perpendicular to the base of the receptacle and that the fitting of the molded body into the jaw base body is provided for play-free storage of the molded body in its transverse direction parallel to the base of the receptacle .

Grundsätzlich kann der Formkörper der erfindungsgemäßen Formbacke mit dem Backengrundkörper fest verbunden sein. Erfindungsgemäß bevorzugt wird eine lösbare Verbindung des Formkörpers mit dem Backengrundkörper (Patentanspruch 5). Aufgrund dieses Erfindungsmerkmals besteht beispielsweise die Möglichkeit, einen verschlissenen Formkörper mit geringem Aufwand gegen einen neuen Formkörper auszuwechseln. Außerdem lassen sich bei wechselnden Bearbeitungsaufgaben auf einfache Weise an ein und demselben Backengrundkörper Formkörper mit unterschiedlichen Geometrien der formgebenden Fläche anbringen.In principle, the molded body of the molded jaw according to the invention can be firmly connected to the jaw base body. According to the invention, a detachable connection of the molded body to the jaw base body is preferred (claim 5). Due to this feature of the invention, it is possible, for example, to replace a worn shaped body with a new shaped body with little effort. In addition, when changing processing tasks, moldings with different geometries of the shaping surface can be easily attached to one and the same jaw base body.

Zur lösbaren Verbindung des Formkörpers mit dem Backengrundkörper dient im Falle der Erfindungsbauart gemäß Patentanspruch 6 eine das Sicherungselement durchsetzende Befestigungsschraube, die in den Grund der für den Formkörper vorgesehenen Aufnahme des Backengrundkörpers eingeschraubt ist. Mittels der Befestigungsschraube wird das Sicherungselement in einer Position fixiert, in welcher das Sicherungselement dem Formkörper seitlich gegenüberliegt. Infolge einer keilartigen Ausbildung des Sicherungselements und/oder des Formkörpers an den einander zugewandten Flächen bewirkt das Sicherungselement zum einen an der von dem Sicherungselement abliegenden Seite des Formkörpers eine Anlage, insbesondere eine Abstützung, des Formkörpers an der Wand der Aufnahme des Backengrundkörpers und somit eine senkrecht zu der Gewindeachse der Befestigungsschraube spielfreie Lagerung des Formkörpers an der Wand der Aufnahme des Backengrundkörpers. Zum anderen verhindert die Befestigungsschraube im Zusammenwirken mit dem Sicherungselement ein Abheben des Formkörpers von dem Grund der Aufnahme des Backengrundkörpers.In the case of the inventive design according to claim 6, a fastening screw passing through the securing element is used to releasably connect the molded body to the jaw base body and is screwed into the base of the receptacle of the jaw base body provided for the molded body. By means of the fastening screw, the securing element is fixed in a position in which the securing element lies laterally opposite the shaped body. As a result of a wedge-like design of the securing element and/or the shaped body on the mutually facing surfaces, the securing element causes, on the one hand, a contact, in particular a support, of the shaped body on the wall of the receptacle of the jaw base body on the side of the shaped body remote from the securing element and thus vertically to the thread axis of the fastening screw, play-free storage of the molded body on the wall of the receptacle of the jaw base body. On the other hand, the fastening screw, in cooperation with the securing element, prevents the molded body from lifting off from the base of the jaw base body.

Zur Fixierung des Formkörpers wird das Sicherungselement durch Einschrauben der Befestigungsschraube in die Gewindeöffnung des Backengrundkörpers relativ zu dem Formkörper längs der Gewindeachse mit einer Zustellbewegung in Richtung auf den Grund der Aufnahme des Backengrundkörpers bewegt. Aufgrund der Zustellbewegung des Sicherungselements und der keilförmigen Ausbildung des Formkörpers und/oder des Sicherungselements wird der Formkörper dabei mittels des Sicherungselements an der von dem Sicherungselement abliegenden Seite an die Wand der Aufnahme des Backengrundkörpers spielfrei angelegt, vorzugsweise gegen die Wand der Aufnahme des Backengrundkörpers vorgespannt.To fix the molded body, the securing element is moved by screwing the fastening screw into the threaded opening of the jaw base body relative to the molded body along the thread axis with an infeed movement in the direction of the base of the jaw base body. Due to the infeed movement of the securing element and the wedge-shaped design of the shaped body and/or the securing element, the shaped body is placed against the wall of the receptacle of the jaw base body without play by means of the securing element on the side remote from the securing element, preferably biased against the wall of the receptacle of the jaw base body.

In weiterer vorteilhafter Ausgestaltung der Erfindung ist ausweislich Patentanspruch 7 vorgesehen, dass der Formkörper an der von dem Sicherungselement abliegenden Seite des Formkörpers einen Rand einer Öffnung der Aufnahme des Backengrundkörpers parallel zu dem Grund der Aufnahme hintergreift. Aufgrund dieses Erfindungsmerkmals ist der an dem Backengrundkörper montierte Formkörper auch an seiner von dem Sicherungselement abliegenden Seite formschlüssig gegen ein Abheben von dem Grund der Aufnahme des Backengrundkörpers gesichert. In bevorzugter Weiterbildung der Erfindung weist das den Rand der Öffnung der Aufnahme des Backengrundkörpers hintergreifende Ende des Formkörpers eine Begrenzungsfläche auf, die gegen den Grund der Aufnahme geneigt verläuft und der eine gleichsinnig geneigte Schrägfläche des Backengrundkörpers gegenüberliegt. An den einander gegenüberliegenden Schrägflächen kann der Formkörper gegen den Backengrundkörper vorgespannt sein.In a further advantageous embodiment of the invention, according to claim 7, the molded body engages behind an edge of an opening in the receptacle of the jaw base body parallel to the base of the receptacle on the side of the molded body remote from the securing element. Due to this feature of the invention, the molded body mounted on the jaw base body is also secured in a form-fitting manner on its side remote from the securing element against lifting off from the base of the base of the jaw base body. In a preferred development of the invention, the end of the shaped body which engages behind the edge of the opening of the receptacle of the jaw base body has a boundary surface which is inclined towards the base of the receptacle and which is opposite an inclined surface of the jaw base body which is inclined in the same direction. The shaped body can be prestressed against the jaw base body on the mutually opposite inclined surfaces.

Die erfindungsgemäße Formbacke gemäß Patentanspruch 8 kann flexibel für unterschiedliche Anwendungsfälle konfiguriert werden. Die erfindungsgemäß bestehende Möglichkeit zur Umorientierung des Formkörpers gegenüber dem Backengrundkörper kann beispielsweise zur Optimierung der Übertragung der Kräfte genutzt werden, die an der formgebenden Fläche des Formkörpers bei der Werkstückbearbeitung anwendungsbezogen wirken und die von der Formbacke in den Backengrundkörper abzutragen sind. Bevorzugtermaßen ist der Formkörper bei seiner zweiten Ausrichtung gegenüber seiner ersten Ausrichtung um 180° um eine Achse gedreht, die senkrecht zu dem Grund der für den Formkörper vorgesehenen Aufnahme an dem Backengrundkörper verläuftThe mold jaw according to the invention according to claim 8 can be flexibly configured for different applications. The possibility according to the invention of reorienting the molded body relative to the jaw base body can be used, for example, to optimize the transmission of forces which have an application-related effect on the shaping surface of the molded body during workpiece processing and which are to be removed from the mold jaw into the jaw base body. Preferably, in its second orientation, the molded body is rotated by 180° relative to its first orientation about an axis which runs perpendicular to the base of the receptacle provided for the molded body on the jaw base body

Zur Fixierung des Formkörpers mit zwei unterschiedlichen Ausrichtungen gegenüber dem Backengrundkörper bestehen erfindungsgemäß mehrere Möglichkeiten.According to the invention, there are several options for fixing the molded body with two different orientations relative to the jaw base body.

Im Falle der Erfindungsbauart gemäß Patentanspruch 9 wird der Formkörper mit der ersten Ausrichtung wie zu Patentanspruch 6 beschrieben an dem Backengrundkörper angebracht. Zur Umorientierung des Formkörpers wird diese Verbindung zwischen dem Formkörper und dem Backengrundkörper gelöst und der Formkörper wird gegenüber der ersten Ausrichtung vorzugsweise um 180° gedreht. An derjenigen Seite der Aufnahme des Backengrundkörpers, an welcher bei der ersten Ausrichtung des Formkörpers das Sicherungselement für die erste Ausrichtung angeordnet war, wird der Formkörper nun an die Wand der Aufnahme des Backengrundkörpers angelegt. An der gegenüberliegenden Seite der Aufnahme des Backengrundkörpers ist in einem Spalt zwischen dem um 180° gedrehten Formkörper und der Wand der Aufnahme das Sicherungselement für die zweite Ausrichtung angeordnet und mittels der Befestigungsschraube für die zweite Ausrichtung mit dem Backengrundkörper verschraubt. Die Befestigungsschraube für die zweite Ausrichtung ist zu diesem Zweck in eine in den Grund der Aufnahme des Backengrundkörpers mündende Gewindeöffnung für die zweite Ausrichtung eingedreht. Die Gewindeöffnung für die zweite Ausrichtung des Formkörpers ist von der Gewindeöffnung für die erste Ausrichtung des Formkörpers in Längsrichtung des Formkörpers beabstandet.In the case of the inventive design according to claim 9, the molded body is attached to the jaw base body with the first orientation as described in claim 6. To reorient the molded body, this connection between the molded body and the jaw base body is released and the molded body is preferably rotated by 180° compared to the first orientation. On the side of the receptacle of the jaw base body on which the securing element for the first alignment was arranged during the first alignment of the molded body, the molded body is now placed against the wall of the receptacle of the jaw base body. On the opposite side of the receptacle of the jaw base body, the securing element for the second alignment is arranged in a gap between the shaped body rotated through 180 ° and the wall of the receptacle and is screwed to the jaw base body by means of the fastening screw for the second alignment. For this purpose, the fastening screw for the second alignment is screwed into a threaded opening for the second alignment that opens into the base of the jaw base body. The threaded opening for the second orientation of the shaped body is spaced from the threaded opening for the first orientation of the shaped body in the longitudinal direction of the shaped body.

Bevorzugtermaßen wird der Formkörper mit der zweiten Ausrichtung gegenüber dem Backengrundkörper mit Hilfe des gleichen Sicherungselements und/oder mit Hilfe der gleichen Befestigungsschraube an dem Backengrundkörper befestigt wie mit der ersten Ausrichtung (Patentanspruch 10).Preferably, the shaped body is fastened to the jaw base body with the second orientation relative to the jaw base body with the aid of the same securing element and/or with the aid of the same fastening screw as with the first orientation (claim 10).

Abweichend von der Erfindungsbauart gemäß Patentanspruch 9 wird im Falle der Erfindungsbauart gemäß Patentanspruch 11 zur Fixierung des Formkörpers mit der zweiten Ausrichtung dieselbe Gewindeöffnung an dem Grund des Backengrundkörpers genutzt wie zur Fixierung des Formkörpers mit der ersten Ausrichtung. In beiden Einbaulagen an dem Backengrundkörper wird der Formkörper wie zu Patentanspruch 6 beschrieben fixiert. Je nach Orientierung des Formkörpers wirkt das Sicherungselement mit der ersten oder mit der zweiten formkörperseitigen Fläche zusammen.Deviating from the inventive design according to claim 9, in the case of the inventive design according to patent claim 11, the same threaded opening on the base of the jaw base body is used to fix the shaped body with the second orientation as for fixing the shaped body with the first orientation. In both installation positions on the jaw base body, the molded body is fixed as described in claim 6. Depending on the orientation of the shaped body, the securing element interacts with the first or with the second surface on the shaped body side.

In weiterer Ausgestaltung der Erfindung werden zur Verbindung des Formkörpers mit dem Backengrundkörper zwei Sicherungselemente verwendet, die an den beiden Längsenden des Formkörpers jeweils in einem Spalt zwischen dem Formkörper und der Wand der Aufnahme des Backengrundkörpers angeordnet sind (Patentanspruch 12). An jeder der beiden Befestigungsstellen ist der Formkörper in der zu Patentanspruch 6 beschriebenen Weise lösbar mit dem Backengrundkörper verbunden.In a further embodiment of the invention, two securing elements are used to connect the molded body to the jaw base body, which are arranged at the two longitudinal ends of the molded body in a gap between the molded body and the wall of the receptacle of the jaw base body (claim 12). At each of the two attachment points, the molded body is releasably connected to the jaw base body in the manner described in claim 6.

Eine Montage des Formkörpers mit zwei unterschiedlichen Ausrichtungen gegenüber dem Backengrundkörper im Sinne von Patentanspruch 8 wird in bevorzugter Ausgestaltung der Formbacke gemäß Patentanspruch 12 dadurch ermöglicht, dass sowohl die formkörperseitige Fläche als auch die weitere formkörperseitige Fläche zum Zusammenwirken mit dem ersten Sicherungselement und dem weiteren Sicherungselement ausgebildet ist (Patentanspruch 13).An assembly of the molded body with two different orientations relative to the jaw base body in the sense of patent claim 8 is made possible in a preferred embodiment of the molded jaw according to patent claim 12 in that both the molded body-side surface and the further molded body-side surface are designed to cooperate with the first securing element and the further securing element is (patent claim 13).

Zur Vereinfachung der Demontage des Formkörpers ist der Backengrundkörper der Erfindungsbauart gemäß Patentanspruch 14 mit einer Durchtrittsöffnung versehen, die unter dem Formkörper in den Grund der Aufnahme des Backengrundkörpers mündet. Bei Bedarf kann der Formkörper mittels eines entsprechend ausgebildeten stiftartigen Werkzeugs durch die Durchtrittsöffnung hindurch an seiner Unterseite beaufschlagt und dadurch aus der Aufnahme des Backengrundkörpers ausgehoben werden.To simplify the dismantling of the molded body, the jaw base body of the inventive design according to claim 14 is provided with a passage opening which opens under the molded body into the base of the receptacle of the jaw base body. If necessary, the underside of the molded body can be acted upon by means of a correspondingly designed pin-like tool through the passage opening and thereby lifted out of the receptacle of the jaw base body.

In bevorzugter Ausgestaltung der Erfindung ist die Durchtrittsöffnung an dem Backengrundkörper mit einem Gewinde versehen. Durch die sich damit ergebende Gewindeöffnung kann zum Lösen der Formbacke eine Schraube gedreht und dadurch auf die Unterseite der Formbacke eine betragsmäßig große Lösekraft ausgeübt werden.In a preferred embodiment of the invention, the passage opening on the jaw base body is provided with a thread. A screw can be turned through the resulting thread opening to loosen the mold jaw and thereby a large releasing force can be exerted on the underside of the mold jaw.

Nachfolgend wird die Erfindung anhand beispielhafter schematischer Darstellungen näher erläutert. Es zeigen:

Figur 1
ein Knetwerk einer Rundknetmaschine zum Umformen von plastisch verformbaren metallischen Werkstücken mit einem Rundknetwerkzeug,
Figur 2
eine Schnittdarstellung des Knetwerks gemäß Figur 1 mit der Schnittebene II-II in Figur 1,
Figur 3
eine perspektivische Darstellung einer Formbacke erster Bauart des Rundknetwerkzeugs gemäß den Figuren 1 und 2,
Figur 4
eine Schnittdarstellung der Formbacke gemäß Figur 3 mit einer in Figur 3 angedeuteten Schnittebene IV,
Figuren 5a, 5b
Schnittdarstellungen einer Formbacke zweiter Bauart des Rundknetwerkzeugs gemäß den Figuren 1 und 2 mit einer ersten und einer zweiten Ausrichtung eines Formkörpers der Formbacke gegenüber einem Backengrundkörper der Formbacke und
Figur 6
eine Schnittdarstellung einer Formbacke dritter Bauart des Rundknetwerkzeugs gemäß den Figuren 1 und 2.
The invention is explained in more detail below using exemplary schematic representations. Show it:
Figure 1
a kneading unit of a rotary swaging machine for forming plastically deformable metallic workpieces with a rotary swaging tool,
Figure 2
a sectional view of the kneading machine according to Figure 1 with the section plane II-II in Figure 1 ,
Figure 3
a perspective view of a first type of molding jaw of the rotary swaging tool according to Figures 1 and 2 ,
Figure 4
a sectional view of the mold jaw according to Figure 3 with an in Figure 3 indicated sectional plane IV,
Figures 5a, 5b
Sectional views of a second type of molding jaw of the rotary swaging tool according to Figures 1 and 2 with a first and a second orientation of a molded body of the molded jaw relative to a jaw base body of the molded jaw and
Figure 6
a sectional view of a third type molding jaw of the rotary swaging tool according to Figures 1 and 2 .

Gemäß den Figuren 1 und 2 weist ein Knetwerk 1 einer Rundknetmaschine zum Umformen von plastisch verformbaren metallischen Rohren ein Rundknetwerkzeug 2 mit insgesamt vier Formbacken 3 auf. Ein umzuformendes Rohr ist in den Figuren 1 und 2 mit einer Rohrachse 4 angedeutet.According to the Figures 1 and 2 a kneading unit 1 of a rotary kneading machine for forming plastically deformable metallic pipes has a rotary kneading tool 2 with a total of four mold jaws 3. A pipe to be formed is in the Figures 1 and 2 indicated with a pipe axis 4.

Die Formbacken 3 liegen einander paarweise gegenüber. Zur Umformung eines Rohrs werden die Formbacken 3 jedes der Formbackenpaare in radialer Richtung der Rohrachse 4 gegeneinander bewegt.The mold jaws 3 lie opposite each other in pairs. To form a tube, the forming jaws 3 of each pair of forming jaws are moved against one another in the radial direction of the tube axis 4.

Bei ihren Bewegungen in radialer Richtung der Rohrachse 4 sind die Formbacken 3 in Führungsschlitzen 5 einer Backenführung geführt, die an einem Ende einer Welle 6 des Knetwerks 1 vorgesehen ist.During their movements in the radial direction of the tube axis 4, the mold jaws 3 are guided in guide slots 5 of a jaw guide which is provided at one end of a shaft 6 of the kneading machine 1.

In gewohnter Weise wird die Umformbewegung der Formbacken 3 in Richtung auf ein umzuformendes Werkstück durch eine um die Rohrachse 4 ausgeführte Relativbewegung der Welle 6 und eines die Welle 6 umgebenden Rollenkäfigs 7 erzeugt. Der Rollenkäfig 7 wird von einem Verschleißring 8 umschlossen.In the usual way, the forming movement of the mold jaws 3 in the direction of a workpiece to be formed is generated by a relative movement of the shaft 6 and a roller cage 7 surrounding the shaft 6 around the tube axis 4. The roller cage 7 is surrounded by a wear ring 8.

Der Antrieb der Formbacken 3 in Richtung auf die Rohrachse 4 erfolgt über Stößel 9, die gleichfalls in den Führungsschlitzen 5 der Welle 6 in radialer Richtung der Rohrachse 4 beweglich geführt sind. An der von den Formbacken 3 abliegenden Seite sind die Stößel 9 mit einem Stößelkopf 10 versehen, der an der von den Formbacken 3 weg weisenden Seite kurvenförmig verläuft.The shaping jaws 3 are driven in the direction of the tube axis 4 via plungers 9, which are also movably guided in the guide slots 5 of the shaft 6 in the radial direction of the tube axis 4. On the side remote from the mold jaws 3, the plungers 9 are provided with a plunger head 10 which runs in a curve on the side facing away from the mold jaws 3.

Infolge der Relativ-Drehbewegung der Welle 6 und des Rollenkäfigs 7 des Knetwerks 1 kommt der Stößelkopf 10 der Stößel 9 mit seinem höchsten Punkt abwechselnd direkt unter einer Rolle 11 des Rollenkäfigs 7 und zwischen zwei Rollen 11 des Rollenkäfigs 7 zu liegen. Sind die Stößelköpfe 10 der Stößel 9 mit ihrem höchsten Punkt direkt unter einer Rolle 11 angeordnet, so ist das Rundknetwerkzeug 2 geschlossen. Befinden sich die Stößelköpfe 10 der Stößel 9 zwischen zwei Rollen 11, so ist das Rundknetwerkzeug 2 geöffnet.As a result of the relative rotational movement of the shaft 6 and the roller cage 7 of the kneading unit 1, the ram head 10 of the ram 9 comes to lie with its highest point alternately directly under a roller 11 of the roller cage 7 and between two rollers 11 of the roller cage 7. If the plunger heads 10 of the plunger 9 are arranged with their highest point directly under a roller 11, the rotary swaging tool 2 is closed. If the plunger heads 10 of the plunger 9 are between two rollers 11, the rotary swaging tool 2 is open.

Die Bewegungen der Formbacken 3 aus dem geöffneten in den geschlossenen Zustand werden gegen die Wirkung einer Rückstellkraft ausgeführt, aufgrund derer sich die Formbacken 3 selbsttätig aus dem geschlossenen zurück in den geöffneten Zustand bewegen.The movements of the mold jaws 3 from the open to the closed state are carried out against the effect of a restoring force, due to which the mold jaws 3 automatically move from the closed back to the open state.

Zur Einstellung der Hublage der Formbacken 3 bei geschlossenem Rundknetwerkzug 2 dienen Keile 12, die zwischen jeder der Formbacken 3 und dem zugehörigen Stößel 9 angeordnet sind. Zur Veränderung der Endposition der Formbacken 3 in radialer Richtung der Rohrachse 4 werden die Keile 12 senkrecht zu der Zeichenebene von Figur 1 relativ zu den Formbacken 3 und den Stößeln 9 zugestellt.Wedges 12, which are arranged between each of the mold jaws 3 and the associated plunger 9, are used to adjust the stroke position of the mold jaws 3 when the rotary kneading tool 2 is closed. To change the end position of the mold jaws 3 in the radial direction of the tube axis 4, the wedges 12 are perpendicular to the drawing plane of Figure 1 delivered relative to the mold jaws 3 and the plungers 9.

Eine der vier baugleichen Formbacken 3 des Rundknetwerkzeugs 2 gemäß den Figuren 1 und 2 ist in Figur 3 im Einzelnen dargestellt. Die Formbacke 3 weist einen Backengrundkörper 13 und einen von dem Backengrundkörper 13 bauteilmäßig getrennten Formkörper 14 auf. Der Backengrundkörper 13 besteht in dem gezeigten Beispielsfall aus SPM Stahl, der Formkörper 14 aus Hartmetall.One of the four identical mold jaws 3 of the rotary swaging tool 2 according to Figures 1 and 2 is in Figure 3 presented in detail. The mold jaw 3 has a jaw base body 13 and a mold body 14 that is structurally separate from the jaw base body 13. In the example shown, the jaw base body 13 is made of SPM steel, the shaped body 14 is made of hard metal.

Der Formkörper 14 ist an einer Werkstückseite mit einer zur Umformung eines Rohrs ausgebildeten formgebenden Fläche 15 versehen.The shaped body 14 is provided on one side of the workpiece with a shaping surface 15 designed for forming a tube.

Die hier dargestellte Formbacke 3 ist zum Vorschubrundkneten ausgelegt. Der Formkörper 14 weist eine Einlaufseite 16 sowie eine in Längsrichtung des Formkörpers 14 auf die Einlaufseite 16 folgende Auslaufseite 17 auf. An der Einlaufseite 16 ist die formgebende Fläche 15 als Einlaufkonus 18 ausgebildet. Auf den Einlaufkonus 18 folgt in Längsrichtung des Formkörpers 14 eine Kalibrierstrecke 19 der formgebenden Fläche 15.The mold jaw 3 shown here is designed for feed rotary kneading. The shaped body 14 has an inlet side 16 and an outlet side 17 following the inlet side 16 in the longitudinal direction of the shaped body 14. On the inlet side 16, the shaping surface 15 is designed as an inlet cone 18. The inlet cone 18 is followed in the longitudinal direction of the shaped body 14 by a calibration section 19 of the shaping surface 15.

Mit dem Backengrundkörper 13 ist der Formkörper 14 mittels einer Befestigungsschraube 20 lösbar verbunden. Einzelheiten der lösbaren Verbindung von Backengrundkörper 13 und Formkörper 14 sind Figur 4 zu entnehmen.The molded body 14 is releasably connected to the jaw base body 13 by means of a fastening screw 20. Details of the detachable connection of the jaw base body 13 and the molded body 14 are Figure 4 refer to.

Ausweislich Figur 4 ist der Formkörper 14 in eine hierfür vorgesehene Aufnahme 21 des Backengrundkörpers 13 eingepasst. Eine Wand 22 der Aufnahme 21 ist dem Formkörper 14 in Figur 4 an zwei Längsseiten und an der in Figur 4 rechten Querseite des Formkörpers 14 unmittelbar benachbart. Mit seinen Längsseiten ist der Formkörper 14 an der Wand 22 der Aufnahme 21 ohne weiteres spielfrei gelagert. Eine spielfreie Lagerung des Formkörpers 14 an seiner in Figur 4 rechten und an seiner in Figur 4 linken Querseite wird mittels eines Sicherungselements 23 bewirkt, das an dem linken Längsende des Formkörpers 14 in einem Spalt zwischen der Wand 22 der Aufnahme 21 an dem Backengrundkörper 13 einerseits und dem Formkörper 14 andererseits angeordnet ist.Evidently Figure 4 the molded body 14 is fitted into a receptacle 21 provided for this purpose in the jaw base body 13. A wall 22 of the receptacle 21 is the molded body 14 in Figure 4 on two long sides and on the in Figure 4 immediately adjacent to the right transverse side of the shaped body 14. With its long sides, the shaped body 14 is easily mounted on the wall 22 of the receptacle 21 without any play. A play-free storage of the shaped body 14 at its in Figure 4 right and on his in Figure 4 left transverse side is effected by means of a securing element 23, which is arranged on the left longitudinal end of the molded body 14 in a gap between the wall 22 of the receptacle 21 on the jaw base body 13 on the one hand and the molded body 14 on the other hand.

Das Sicherungselement 23 wird längs einer in Querrichtung eines Grunds 24 der Aufnahme 21 verlaufenden Gewindeachse 25 der Befestigungsschraube 20 von der Befestigungsschraube 20 durchsetzt. An der von dem Grund 24 der Aufnahme 21 abliegenden Seite des Sicherungselements 23 übergreift die Befestigungsschraube 20 das Sicherungselement 23 mit einem Schraubenkopf 26 senkrecht zu der Gewindeachse 25. Mit ihrem gegenüberliegenden Ende ist die Befestigungsschraube 20 in eine in den Grund 24 der Aufnahme 21 des Backengrundkörpers 13 mündende und mit der Befestigungsschraube 20 koaxiale Gewindeöffnung bzw. Gewindebohrung 27 des Backengrundkörpers 13 eingeschraubt.The securing element 23 is penetrated by the fastening screw 20 along a thread axis 25 of the fastening screw 20 which runs in the transverse direction of a base 24 of the receptacle 21. On the basis of reason 24 of the recording 21 opposite side of the securing element 23, the fastening screw 20 engages over the securing element 23 with a screw head 26 perpendicular to the thread axis 25. With its opposite end, the fastening screw 20 opens into the base 24 of the receptacle 21 of the jaw base body 13 and is coaxial with the fastening screw 20 Threaded opening or threaded hole 27 of the jaw base body 13 is screwed in.

Das Sicherungselement 23 und der Formkörper 14 liegen mit einer sicherungselementseitigen Fläche 28 und einer formkörperseitigen Fläche 29 einander gegenüber. Im Bereich ihres gegenseitigen Kontakts sind das Sicherungselement 23 und der Formkörper 14 keilartig ausgebildet. Dementsprechend verlaufen die sicherungselementseitige Fläche 28 und die formkörperseitige Fläche 29 längs der Gewindeachse 25 gegen die Gewindeachse 25 geneigt, wobei sich sowohl die sicherungselementseitige Fläche 28 als auch die formkörperseitige Fläche 29 zu dem Grund 24 der Aufnahme 21 des Backengrundkörpers 13 hin an die Gewindeachse 25 annähern.The securing element 23 and the shaped body 14 lie opposite one another with a surface 28 on the securing element side and a surface 29 on the shaped body side. In the area of their mutual contact, the securing element 23 and the shaped body 14 are wedge-shaped. Accordingly, the surface 28 on the securing element side and the surface 29 on the shaped body side are inclined along the thread axis 25 against the thread axis 25, with both the surface 28 on the securing element side and the surface 29 on the shaped body side approaching the base 24 of the receptacle 21 of the jaw base body 13 towards the thread axis 25 .

Aufgrund der keilartigen Geometrie des Sicherungselements 23 und des Formkörpers 14 im Bereich ihres gegenseitigen Kontakts wird der Formkörper 14 mittels des Sicherungselements 23 an der von dem Sicherungselement 23 abliegenden Seite gegen die Wand 22 der Aufnahme 21 des Backengrundkörpers 13 vorgespannt und dadurch in Längsrichtung des Formkörpers 14 spielfrei an dem Backengrundkörper 13 gelagert. In Gegenrichtung ist der Formkörper 14 über das Sicherungselement 23 spielfrei an der Wand 22 der Aufnahme 21 abgestützt. Gleichzeitig wird der Formkörper 14 durch das Sicherungselement 23 gegen den Grund 24 der Aufnahme 21 des Backengrundkörpers 13 gedrückt.Due to the wedge-like geometry of the securing element 23 and the shaped body 14 in the area of their mutual contact, the shaped body 14 is prestressed by means of the securing element 23 on the side remote from the securing element 23 against the wall 22 of the receptacle 21 of the jaw base body 13 and thereby in the longitudinal direction of the shaped body 14 stored on the jaw base body 13 without play. In the opposite direction, the shaped body 14 is supported without play on the wall 22 of the receptacle 21 via the securing element 23. At the same time, the shaped body 14 is pressed against the base 24 of the receptacle 21 of the jaw base body 13 by the securing element 23.

Wie in Figur 4 ebenfalls zu erkennen ist, weist der Backengrundkörper 13 mit Abstand von der Gewindebohrung 27 eine unter dem Formkörper 14 in den Grund 24 der Aufnahme 21 des Backengrundkörpers 13 mündende Durchtrittsöffnung 30 auf. Die Durchtrittsöffnung 30 wird bei der Demontage des Formkörpers 14 genutzt. Nach dem Lösen der Befestigungsschraube 20 und dem Entfernen des Sicherungselements 23 wird die Unterseite des Formkörpers 14 durch die Durchtrittsöffnung 30 hindurch mit einem stiftartigen Werkzeug beaufschlagt. Aufgrund der Beaufschlagung durch das stiftartige Werkzeug wird der Formkörper 14 aus der Aufnahme 21 des Backengrundkörpers 13 ausgehoben.As in Figure 4 can also be seen, the jaw base body 13 has, at a distance from the threaded bore 27, a passage opening 30 which opens under the molded body 14 into the base 24 of the receptacle 21 of the jaw base body 13. The passage opening 30 is used when dismantling the molded body 14. After loosening the fastening screw 20 and removing the securing element 23, the underside of the shaped body 14 is acted upon by a pin-like tool through the passage opening 30. Because of When the pin-like tool is applied, the molded body 14 is lifted out of the receptacle 21 of the jaw base body 13.

Verlaufen der Formkörper 14 und die Wand 22 der Aufnahme 21 des Backengrundkörpers 13 an der in Figur 4 rechten Seite des Formkörpers 14 wie gestrichelt dargestellt, so hintergreift der Formkörper 14 an seiner von dem Sicherungselement 23 abliegenden Seite mit einer zweiten formkörperseitigen Fläche 29a einen Rand einer dem Grund 24 der Aufnahme 21 des Backengrundkörpers 13 gegenüberliegenden Öffnung der Aufnahme 21 parallel zu dem Grund 24 der Aufnahme 21. Auf diese Weise ist der an dem Backengrundkörper 13 montierte Formkörper 14 auch an seiner von dem Sicherungselement 23 abliegenden Seite formschlüssig gegen ein Abheben von dem Grund 24 der Aufnahme 21 des Backengrundkörpers 13 gesichert.The shaped body 14 and the wall 22 of the receptacle 21 of the jaw base body 13 run on the in Figure 4 On the right side of the molded body 14, as shown in dashed lines, the molded body 14, on its side remote from the securing element 23, engages behind an edge of an opening of the receptacle 21 opposite the base 24 of the receptacle 21 of the jaw base body 13 with a second surface 29a on the molded body side, parallel to the base 24 the receptacle 21. In this way, the shaped body 14 mounted on the jaw base body 13 is also positively secured on its side remote from the securing element 23 against lifting off from the base 24 of the receptacle 21 of the jaw base body 13.

Außerdem lässt sich der mit der zweiten formkörperseitigen Fläche 29a versehene Formkörper 14 außer mit der in Figur 4 gezeigten Ausrichtung mit einer zweiten Ausrichtung gegenüber dem Backengrundkörper 13 mit dem Backengrundkörper 13 lösbar verbinden. Mit der zweiten Ausrichtung ist der Formkörper 14 gegenüber der gezeigten ersten Ausrichtung um 180° gedreht. Die Einlaufseite 16 und die Auslaufseite 17 des Formkörpers 14 sind bei den unterschiedlichen Ausrichtungen des Formkörpers 14 gegeneinander vertauscht. Mit beiden Ausrichtungen gegenüber dem Backengrundkörper 13 kann der Formkörper 14 mittels der Befestigungsschraube 20 und des Sicherungselements 23 an dem Backengrundkörper 13 lösbar fixiert werden.In addition, the molded body 14 provided with the second surface 29a on the molded body side can be used except with the in Figure 4 shown orientation with a second orientation relative to the jaw base body 13 releasably connect to the jaw base body 13. With the second orientation, the shaped body 14 is rotated by 180° compared to the first orientation shown. The inlet side 16 and the outlet side 17 of the shaped body 14 are interchanged with each other when the shaped body 14 is aligned differently. With both orientations relative to the jaw base body 13, the molded body 14 can be releasably fixed to the jaw base body 13 by means of the fastening screw 20 and the securing element 23.

In den Figuren 5a und 5b ist ein Formkörper 14 einer Formbacke 3a mit einer ersten (Figur 5a) und mit einer zweiten Ausrichtung (Figur 5b) gegenüber einem Backengrundkörper 13 dargestellt. Eine Umorientierung des Formkörpers 14 gegenüber dem Backengrundkörper 13 wird beispielsweise vorgenommen, um an der Formbacke 3a die Übertragung der Kräfte zu optimieren, die an einer formgebenden Fläche 15 des Formkörpers 14 bei der Werkstückbearbeitung anwendungsbezogen wirken und die von der Formbacke 14 in den Backengrundkörper 13 abzutragen sind. Die Formbacke 3a kann anstelle der in den Figuren 3 und 4 gezeigten Formbacke 3 an dem Knetwerk 1 gemäß den Figuren 1 und 2 eingebaut werden.In the Figures 5a and 5b is a molded body 14 of a mold jaw 3a with a first ( Figure 5a ) and with a second orientation ( Figure 5b ) compared to a jaw base body 13 shown. A reorientation of the molded body 14 relative to the jaw base body 13 is carried out, for example, in order to optimize the transmission of the forces on the mold jaw 3a, which act on a shaping surface 15 of the molded body 14 in an application-related manner during workpiece machining and which are transferred from the mold jaw 14 into the jaw base body 13 are. The mold jaw 3a can be used instead of the one in the Figures 3 and 4 shown mold jaw 3 on the kneading machine 1 according to Figures 1 and 2 to be built in.

Für einander entsprechende Details werden in den Figuren 3, 4 einerseits und in den Figuren 5a, 5b andererseits die gleichen Bezugszeichen verwendet.Corresponding details are provided in the Figures 3, 4 on the one hand and in the Figures 5a, 5b on the other hand, the same reference numerals are used.

Die lösbare Verbindung des Formkörpers 14 mit dem Backengrundkörper 13 ist bei der in Figur 5a dargestellten ersten Ausrichtung des Formkörpers 14 in gleicher Weise hergestellt wie die lösbare Verbindung des Formkörpers 14 mit dem Backengrundkörper 13 in den Figuren 3 und 4.The detachable connection of the molded body 14 to the jaw base body 13 is in Figure 5a illustrated first orientation of the molded body 14 is produced in the same way as the detachable connection of the molded body 14 to the jaw base body 13 in the Figures 3 and 4 .

Bei Bedarf wird die in Figur 5a hergestellte Verbindung zwischen dem Formkörper 14 und dem Backengrundkörper 13 gelöst und der Formkörper 14 wird gegenüber der Ausrichtung gemäß Figur 5a um 180° gedreht und dadurch gegenüber dem Backengrundkörper 13 wie in Figur 5b gezeigt orientiert.If necessary, the in Figure 5a The connection established between the molded body 14 and the jaw base body 13 is released and the molded body 14 is aligned in accordance with Figure 5a rotated through 180° and thereby relative to the jaw base body 13 as in Figure 5b shown oriented.

An derjenigen Seite der Aufnahme 21, an welcher bei der ersten Ausrichtung des Formkörpers 14 das Sicherungselement 23 angeordnet war, ist der Formkörper 14 nun an die Wand 22 der Aufnahme 21 des Backengrundkörpers 13 angelegt. An der gegenüberliegenden Seite der Aufnahme 21 wird in einem Spalt zwischen dem um 180° gedrehten Formkörper 14 und der Wand 22 der Aufnahme 21 des Backengrundkörpers 13 das Sicherungselement für die zweite Ausrichtung, vorliegend das auch bereits in Figur 5a vorgesehene Sicherungselement 23, angeordnet und mittels der auch als Befestigungsschraube für die zweite Ausrichtung verwendeten Befestigungsschraube 20 mit dem Backengrundkörper 13 verschraubt. Die Befestigungsschraube 20 wird zu diesem Zweck in eine in den Grund 24 der Aufnahme 21 des Backengrundkörpers 13 mündende Gewindeöffnung 27a für die zweite Ausrichtung eingedreht. Die Gewindeöffnung 27a für die zweite Ausrichtung des Formkörpers 14 ist von der Gewindeöffnung 27 für die erste Ausrichtung des Formkörpers 14 in dessen Längsrichtung beabstandet.On the side of the receptacle 21 on which the securing element 23 was arranged when the molded body 14 was first aligned, the molded body 14 is now placed against the wall 22 of the receptacle 21 of the jaw base body 13. On the opposite side of the receptacle 21, in a gap between the shaped body 14 rotated through 180 ° and the wall 22 of the receptacle 21 of the jaw base body 13, the securing element for the second orientation, in this case already in Figure 5a provided securing element 23, arranged and screwed to the jaw base body 13 by means of the fastening screw 20, which is also used as a fastening screw for the second alignment. For this purpose, the fastening screw 20 is screwed into a threaded opening 27a opening into the base 24 of the receptacle 21 of the jaw base body 13 for the second alignment. The threaded opening 27a for the second orientation of the shaped body 14 is spaced from the threaded opening 27 for the first orientation of the shaped body 14 in its longitudinal direction.

Auch bei den Einbauverhältnissen gemäß Figur 5b ist das Sicherungselement 23 mit der sicherungselementseitigen Fläche 28 an der formkörperseitigen Fläche 29 des Formkörpers 14 abgestützt. Mittels des Sicherungselements 23 wird der Formkörper 14 an der in Figur 5b linken Seite des Formkörpers 14 gegen die Wand 22 der Aufnahme 21 des Backengrundkörpers 13 vorgespannt.Also in accordance with the installation conditions Figure 5b the securing element 23 is supported with the securing element-side surface 28 on the shaped body-side surface 29 of the shaped body 14. By means of the security element 23 the Shaped body 14 at the in Figure 5b left side of the molded body 14 is biased against the wall 22 of the receptacle 21 of the jaw base body 13.

Bei der ersten Ausrichtung des Formkörpers 14 gemäß Figur 5a kann die Gewindeöffnung 27a bei der Demontage des Formkörpers 14 genutzt werden und dementsprechend eine unter dem Formkörper 14 mündende Durchtrittsöffnung 30a des Backengrundkörpers 13 ausbilden. Bei der zweiten Ausrichtung des Formkörpers 14 gemäß Figur 5b kommt die Gewindeöffnung 27 als entsprechend nutzbare Durchtrittsöffnung 30b des Backengrundkörpers 13 in Frage.During the first alignment of the shaped body 14 according to Figure 5a The threaded opening 27a can be used when dismantling the molded body 14 and accordingly form a passage opening 30a of the jaw base body 13 which opens under the molded body 14. During the second orientation of the shaped body 14 according to Figure 5b The threaded opening 27 can be used as a correspondingly usable passage opening 30b of the jaw base body 13.

Abweichend von der Durchtrittsöffnung 30 gemäß Figur 4 sind die Durchtrittsöffnungen 30a, 30b an der Öffnungswand mit einem Gewinde versehen. Zum Lösen des Formkörpers 14 lässt sich deshalb von außen her eine Schraube durch die Durchtrittsöffnungen 30a, 30b hindurch drehen, bis das vorauseilende Ende der Schraube den zu demontierenden Formkörper 14 an seiner Unterseite beaufschlagt. Durch fortgesetztes Eindrehen der Schraube in die Durchtrittsöffnungen 30a, 30b kann auf die Unterseite des Formkörpers 14 eine betragsmäßig große Lösekraft ausgeübt werden.Deviating from the passage opening 30 according to Figure 4 the passage openings 30a, 30b are provided with a thread on the opening wall. To loosen the shaped body 14, a screw can therefore be turned from the outside through the passage openings 30a, 30b until the leading end of the screw acts on the underside of the shaped body 14 to be dismantled. By continuing to screw the screw into the passage openings 30a, 30b, a large releasing force can be exerted on the underside of the molded body 14.

Figur 6 zeigt eine Formbacke 3b, die ebenfalls zum Einbau an dem in den Figuren 1 und 2 gezeigten Knetwerk 1 ausgebildet ist. Figure 6 shows a mold jaw 3b, which is also for installation on the in the Figures 1 and 2 kneading unit 1 shown is formed.

Ein Formkörper 14 der Formbacke 3b ist an seiner in Figur 6 linken Seite mit einem Backengrundkörper 13 der Formbacke 3b in gleicher Weise lösbar verbunden wie die Formbacke 14 mit dem Backengrundkörper 13 in den Figuren 3 und 4.A molded body 14 of the mold jaw 3b is at its in Figure 6 left side with a jaw base body 13 of the mold jaw 3b detachably connected in the same way as the mold jaw 14 with the jaw base body 13 in the Figures 3 and 4 .

Zusätzlich zu dem Sicherungselement 23 an der in Figur 6 linken Seite des Formkörpers 14 ist an der in Figur 6 rechten Seite des Formkörpers 14 ein weiteres Sicherungselement 43 vorgesehen, mittels dessen der Formkörper 14 an der Wand 22 und an dem Grund 24 der Aufnahme 21 des Backengrundkörpers 13 abgestützt ist.In addition to the securing element 23 on the in Figure 6 The left side of the molded body 14 is on the in Figure 6 On the right side of the molded body 14, a further securing element 43 is provided, by means of which the molded body 14 is supported on the wall 22 and on the base 24 of the receptacle 21 of the jaw base body 13.

Das weitere Sicherungselement 43 ist an der von dem Sicherungselement 23 abliegenden Seite des Formkörpers 14 in einem Spalt zwischen der Wand 22 der Aufnahme 21 des Backengrundkörpers 13 einerseits und dem Formkörper 14 andererseits angeordnet und einerseits an der Wand 22 der Aufnahme 21 des Backengrundkörpers 13 und andererseits an dem Formkörper 14 gelagert.The further securing element 43 is on the side of the shaped body 14 remote from the securing element 23 in a gap between the wall 22 Receptacle 21 of the jaw base body 13 on the one hand and the molded body 14 on the other hand arranged and mounted on the wall 22 of the receptacle 21 of the jaw base body 13 on the one hand and on the molded body 14 on the other hand.

Zur lösbaren Verbindung des Formkörpers 14 mit dem Backengrundkörper 13 ist zusätzlich zu der Befestigungsschraube 20 eine weitere Befestigungsschraube 40 vorgesehen.For the detachable connection of the molded body 14 to the jaw base body 13, a further fastening screw 40 is provided in addition to the fastening screw 20.

Die weitere Befestigungsschraube 40 durchsetzt das weitere Sicherungselement 43 längs einer in Querrichtung des Grundes 24 der Aufnahme 21 des Backengrundkörpers 13 verlaufenden weiteren Gewindeachse 45 der weiteren Befestigungsschraube 40. An der von dem Grund 24 der Aufnahme 21 abliegenden Seite übergreift die weitere Befestigungsschraube 40 das weitere Sicherungselement 43 mit einem weiteren Schraubenkopf 46 in Querrichtung der weiteren Gewindeachse 45. An dem Grund 24 der Aufnahme 21 ist die weitere Befestigungsschraube 40 längs der weiteren Gewindeachse 45 in eine in den Grund 24 der Aufnahme 21 mündende und mit der weiteren Befestigungsschraube 40 koaxiale weitere Gewindeöffnung 47 des Backengrundkörpers 13 eingeschraubt.The further fastening screw 40 passes through the further securing element 43 along a further thread axis 45 of the further fastening screw 40 which runs in the transverse direction of the base 24 of the receptacle 21 of the jaw base body 13. On the side remote from the base 24 of the receptacle 21, the further fastening screw 40 engages over the further securing element 43 with a further screw head 46 in the transverse direction of the further thread axis 45. At the base 24 of the receptacle 21, the further fastening screw 40 is along the further thread axis 45 in a further thread opening 47 which opens into the base 24 of the receptacle 21 and is coaxial with the further fastening screw 40 of the jaw base body 13 is screwed in.

Das weitere Sicherungselement 43 ist mit einer weiteren sicherungselementseitigen Fläche 48 an einer weiteren formkörperseitigen Fläche 49 des Formkörpers 14 abgestützt. Die weitere sicherungselementseitige Fläche 48 und die weitere formkörperseitige Fläche 49 verlaufen längs der weiteren Gewindeachse 45 und liegen einander senkrecht zu der weiteren Gewindeachse 45 gegenüber. Sowohl die weitere sicherungselementseitige Fläche 48 als auch die weitere formkörperseitige Fläche 49 ist nach Art einer Keilfläche ausgebildet und gegen die weitere Gewindeachse 45 geneigt. Beide Keilflächen nähern sich dabei zu dem Grund 24 der Aufnahme 21 hin an die weitere Gewindeachse 45 an.The further securing element 43 is supported with a further securing element-side surface 48 on a further shaped body-side surface 49 of the shaped body 14. The further surface 48 on the securing element side and the further surface 49 on the shaped body side run along the further thread axis 45 and lie opposite one another perpendicular to the further thread axis 45. Both the further surface 48 on the securing element side and the further surface 49 on the shaped body side are designed in the manner of a wedge surface and are inclined towards the further thread axis 45. Both wedge surfaces approach the base 24 of the receptacle 21 towards the further thread axis 45.

Auch der Formkörper 14 der Formbacke 3b kann an dem Backengrundkörper 13 mit zwei unterschiedlichen Ausrichtungen gegenüber dem Backengrundkörper 13 angebracht werden, wobei der Formkörper 14 mit der zweiten Ausrichtung gegenüber der ersten Ausrichtung um 180° gedreht ist.The molded body 14 of the mold jaw 3b can also be attached to the jaw base body 13 with two different orientations relative to the jaw base body 13, the molded body 14 being rotated by 180° with the second orientation relative to the first orientation.

Zu diesem Zweck ist sowohl die formkörperseitige Fläche 29 als auch die weitere formkörperseitige Fläche 49 zum Zusammenwirken mit dem Sicherungselement 23 und dem weiteren Sicherungselement 43 ausgebildet.For this purpose, both the surface 29 on the molded body side and the further surface 49 on the molded body side are designed to cooperate with the securing element 23 and the further securing element 43.

Claims (15)

  1. Shaping jaw of a rotary swaging tool (2) for shaping a plastically deformable, preferably metal, workpiece,
    • having a main jaw body (13) and
    • having a shaping surface (15) which delimits the shaping jaw on a workpiece side of the shaping jaw and is designed for shaping a workpiece,
    characterized in that the shaping surface (15) is provided on a shaping body (14) which is separate from the main jaw body (13) and is placed on the main jaw body (13), preferably connected to the main jaw body (13), the shaping surface (15) delimiting the shaping body (14) on a workpiece side of the shaping body (14).
  2. Shaping jaw according to claim 1, characterized in that the shaping body (14) is fitted into a receptacle (21), provided for the shaping body (14), on the main jaw body (13).
  3. Shaping jaw according to either of the preceding claims, characterized in that the shaping body (14) is connected to the main jaw body (13) by means of at least one securing element (23, 43) which, on one side, abuts the outside of the shaping body (14) and, on the other side, is connected to the main jaw body (13).
  4. Shaping jaw according to claim 2 and claim 3, characterized in that
    • the securing element (23, 43) is arranged in a gap between a wall (22) of the receptacle (21) of the main jaw body (13) on one side and the shaping body (14) on the other side and, on one side, is placed on the wall (22) of the receptacle (21) of the main jaw body (13) and, on the other side, on the shaping body (14), and
    • the shaping body (14) is applied to the wall (22) and/or to a base (24) of the receptacle (21) of the main jaw body (13) by means of the securing element (23, 43).
  5. Shaping jaw according to any of the preceding claims, characterized in that the shaping body (14) is detachably connected to the main jaw body (13).
  6. Shaping jaw according to claim 4 and claim 5, characterized in that the shaping body (14) is detachably connected to the main jaw body (13) by means of a fastening screw (20),
    • by the fastening screw (20) passing through the securing element (23) along a thread axis (25) of the fastening screw (20) extending in the transverse direction of the base (24) of the receptacle (21) of the main jaw body (13), the fastening screw (20) engaging over the securing element (23) on the side remote from the base (24) of the receptacle (21) of the main jaw body (13) with a screw head (26) in the transverse direction of the thread axis (25), and the fastening screw (20) being screwed at the base (24) of the receptacle (21) of the main jaw body (13) along the thread axis (25) into a threaded opening (27) of the main jaw body (13), which opens into the base (24) of the receptacle (21) of the main jaw body (13) and is coaxial with the fastening screw (20),
    • by the securing element (23) being supported with a securing-element side surface (28) on a shaping body-side surface (29) of the shaping body (14), the securing-element side surface (28) and the shaping body-side surface (29) extending along the thread axis (25) and lying opposite one another perpendicularly to the thread axis (25), and at least one of the securing element-side surface (28) and the shaping body-side surface (29) being designed in the manner of a wedge surface which extends inclined to the thread axis (25) in that the wedge surface extending towards the base (24) of the receptacle (21) of the main jaw body (13) approaches the thread axis (25), and
    • by the shaping body (14) being applied to the wall (22) of the receptacle (21) of the main jaw body (13) by means of the securing element (23) on the side of the shaping body (14) remote from the securing element (23), by preferably being pretensioned against the wall (22) of the receptacle (21) of the main jaw body (13).
  7. Shaping jaw according to claim 6, characterized in that the shaping body (14) on the side of the shaping body (14) remote from the securing element (23) engages behind an edge of an opening in the receptacle (21) of the main jaw body (13) opposite the base (24) of the receptacle (21) of the main jaw body (13) in parallel with the base (24) of the receptacle (21) of the main jaw body (13).
  8. Shaping jaw according to claim 5, characterized in that
    • the shaping body (14) has an inlet side (16) and an outlet side (17) for a workpiece, the outlet side (17) of the shaping body (14) following the inlet side (16) in a longitudinal direction of the shaping body (14), and
    • the shaping body (14) can optionally be detachably connected to the main jaw body (13) with a first orientation relative to the main jaw body (13) or with a second orientation relative to the main jaw body (13), the inlet side (16) and the outlet side (17) of the shaping body (14) being interchanged in the first orientation and in the second orientation.
  9. Shaping jaw according to claim 6 and claim 8, characterized in that
    • the shaping body (14) is detachably connected to the main jaw body (13) with the first orientation relative to the main jaw body (13) according to claim 6 or claim 7, the securing element (23) being provided as a securing element for the first orientation, the gap for receiving the securing element (23) being provided as a gap for the first orientation, the fastening screw (20) being provided as a fastening screw for the first orientation and the threaded opening (27) being provided as a threaded opening for the first orientation,
    • a fastening screw is provided for the second orientation and a threaded opening (27a) which is coaxial with the fastening screw for the second orientation and opens into the base (24) of the receptacle (21) of the main jaw body (13) is provided for the second orientation, the mouth of the threaded opening (27a) for the second orientation being spaced apart from the mouth of the threaded opening (27) for the first orientation in the longitudinal direction of the shaping body (14), and
    • the shaping body (14) is detachably connected to the main jaw body (13) with the second orientation relative to the main jaw body (13),
    - by a securing element for the second orientation being arranged between the wall (22) of the receptacle (21) of the main jaw body (13) on one side and the shaping body (14) on the other side in a gap for the second orientation, which is opposite the gap for the first orientation on the shaping body (14) in the longitudinal direction of the shaping body (14),
    - by the fastening screw for the second orientation passing through the securing element for the second orientation along a thread axis of the fastening screw for the second orientation extending in the transverse direction of the base (24) of the receptacle (21) of the main jaw body (13), the fastening screw for the second orientation engaging over the securing element for the second orientation on the side remote from the base (24) of the receptacle (21) of the main jaw body (13) with a screw head in the transverse direction of the thread axis of the fastening screw for the second orientation, and the fastening screw for the second orientation being screwed at the base (24) of the receptacle (21) of the main jaw body (13) along the thread axis of the fastening screw for the second orientation into the threaded opening (27a) provided on the main jaw body (13) for the second orientation,
    - by the securing element for the second orientation being supported with a securing element-side surface for the second orientation on the shaping body-side surface (29) of the shaping body (14), the securing element-side surface for the second orientation and the shaping body-side surface (29) extending along the thread axis of the fastening screw for the second orientation and lying opposite one another perpendicularly to the thread axis of the fastening screw for the second orientation, and at least one of the securing element-side surface for the second orientation and the shaping body-side surface (29) being designed in the manner of a wedge surface which extends inclined to the thread axis of the fastening screw for the second orientation in that the wedge surface extending towards the base of receptacle (21) of the main jaw body (13) approaches the thread axis of the fastening screw for the second orientation, and
    • by the shaping body (14) being applied to the wall (22) of the receptacle (21) of the main jaw body (13) by means of the securing element for the second orientation on the side of the shaping body (14) remote from the securing element for the second orientation, the shaping body (14) preferably being pretensioned against the wall (22) of the receptacle (21) of the main jaw body (13).
  10. Shaping jaw according to claim 9, characterized in that the securing element (23) for the first orientation is provided as the securing element for the second orientation and/or in that the fastening screw (20) for the first orientation is provided as the fastening screw for the second orientation.
  11. Shaping jaw according to claim 6 and claim 8, characterized in that
    • the shaping body-side surface (29) of the shaping body (14) is provided as a first shaping body-side surface (29),
    • the shaping body (14) is provided with a second shaping body-side surface (29a) on the side opposite the first shaping body-side surface (29) in the longitudinal direction of the shaping body (14), and
    • the securing element (23) is supported, depending on the orientation of the shaping body (14) relative to the main jaw body (13), with the securing element-side surface (28) on the first shaping body-side surface (29) or on the second shaping body-side surface (29a) of the shaping body (14), the securing element-side surface (28) on one side and the first shaping body-side surface (29) or the second shaping body-side surface (29a) on the other side lying opposite one another perpendicularly to the thread axis (25), and at least one of the securing element-side surface (28) on one side and the first shaping body-side surface (29) or the second shaping body-side surface (29a) on the other side being designed in the manner of a wedge surface which extends along the thread axis (25) and inclined to the thread axis (25) in that the wedge surface extending towards the base of the receptacle (21) of the main jaw body (13) approaches the thread axis (25).
  12. Shaping jaw according to claim 6, characterized in that
    • a further securing element (43) is provided in addition to the securing element (23), by means of which further securing element the shaping body (14) is supported on the wall (22) and/or on the base (24) of the receptacle (21) of the main jaw body (13),
    - the further securing element (43) being arranged on the side of the shaping body (14) remote from the securing element (23) in a gap between the wall (22) of the receptacle (21) of the main jaw body (13) on one side and the shaping body (14) on the other side and, on one side, being placed on the wall (22) of the receptacle (21) of the main jaw body (13) and, on the other side, on the shaping body (14), and
    • a further fastening screw (40) is provided for detachably connecting the shaping body (14) to the main jaw body (13) in addition to the fastening screw (20),
    - the further fastening screw (40) passing through the further securing element (43) along a further thread axis (45) of the further fastening screw (40) extending in the transverse direction of the base (24) of the receptacle (21) of the main jaw body (13), the further fastening screw (40) engaging over the further securing element (43) on the side remote from the base (24) of the receptacle (21) of the main jaw body (13) with a further screw head (46) in the transverse direction of the further thread axis (45), and the further fastening screw (40) being screwed at the base (24) of the receptacle (21) of the main jaw body (13) along the further thread axis (45) into a further threaded opening (47) of the main jaw body (13), which opens into the base (24) of the receptacle (21) of the main jaw body (13) and is coaxial with the further fastening screw (40),
    - the further securing element (43) being supported with a further securing element-side surface (48) on a further shaping body-side surface (49) of the shaping body (14), the further securing element-side surface (48) and the further shaping body-side surface (49) extending along the further thread axis (45) and lying opposite one another perpendicularly to the further thread axis (45), and at least one of the further securing element-side surface (48) and the further shaping body-side surface (49) being designed in the manner of a wedge surface which extends inclined to the further thread axis (45) in that the wedge surface extending towards the base (24) of the receptacle (21) of the main jaw body (13) approaches the further thread axis (45), and
    - the shaping body (14) being applied to the wall (22) of the receptacle (21) of the main jaw body (13) by means of the further securing element (43) on the side of the shaping body (14) remote from the further securing element (43) via the securing element (23), the shaping body (14) preferably being pretensioned against the wall (22) of the receptacle (21) of the main jaw body (13).
  13. Shaping jaw according to claim 8 and claim 12, characterized in that both the shaping body-side surface (29) and the further shaping body-side surface (49) are designed to interact with the securing element (23) and the further securing element (43).
  14. Shaping jaw according to any of claims 6, 7 and 9 to 13, characterized in that the main jaw body (13) is provided with a passage opening (30, 30a, 30b) which opens under the shaping body (14) into the base (24) of the receptacle (21) of the main jaw body (13) and is preferably designed as a threaded opening.
  15. Rotary swaging tool for forming a plastically deformable, preferably metal, workpiece, having shaping jaws (3, 3a, 3b), characterized in that at least one of the shaping jaws (3, 3a, 3b) is designed according to any of the preceding claims.
EP21211327.8A 2021-11-30 2021-11-30 Shaping jaw of a round kneading device for forming a plastically deformable workpiece and round kneading tool with shaping jaws Active EP4186613B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP21211327.8A EP4186613B1 (en) 2021-11-30 2021-11-30 Shaping jaw of a round kneading device for forming a plastically deformable workpiece and round kneading tool with shaping jaws
CN202280079371.6A CN118338976A (en) 2021-11-30 2022-11-23 Forming jaw for a rotary forging tool for forming plastically deformable workpieces and rotary forging tool with at least one forming jaw
PCT/EP2022/082901 WO2023099296A1 (en) 2021-11-30 2022-11-23 Forming jaw of a rotary swaging tool for shaping a plastically deformable workpiece, and rotary swaging tool having at least one forming jaw
KR1020247019936A KR20240116747A (en) 2021-11-30 2022-11-23 Forming jaws of a rotary swaging tool for forming plastically deformable workpieces and rotary swaging tool with forming jaws
MX2024006582A MX2024006582A (en) 2021-11-30 2022-11-23 Forming jaw of a rotary swaging tool for shaping a plastically deformable workpiece, and rotary swaging tool having at least one forming jaw.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21211327.8A EP4186613B1 (en) 2021-11-30 2021-11-30 Shaping jaw of a round kneading device for forming a plastically deformable workpiece and round kneading tool with shaping jaws

Publications (3)

Publication Number Publication Date
EP4186613A1 EP4186613A1 (en) 2023-05-31
EP4186613C0 EP4186613C0 (en) 2023-11-22
EP4186613B1 true EP4186613B1 (en) 2023-11-22

Family

ID=78819824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21211327.8A Active EP4186613B1 (en) 2021-11-30 2021-11-30 Shaping jaw of a round kneading device for forming a plastically deformable workpiece and round kneading tool with shaping jaws

Country Status (5)

Country Link
EP (1) EP4186613B1 (en)
KR (1) KR20240116747A (en)
CN (1) CN118338976A (en)
MX (1) MX2024006582A (en)
WO (1) WO2023099296A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002855C1 (en) * 1990-02-01 1991-10-24 Gebr. Felss Gmbh + Co Kg, 7535 Koenigsbach-Stein, De Tool changer for kneading machine - has front cover which swivels and hammer head fitted with trip arm
DE102004014705A1 (en) * 2004-03-25 2005-10-13 Otto Bihler Handels-Beteiligungs-Gmbh Production of a final contour of a tool such as a hexagon socket screw driver on an elongated material comprises producing the final contour in a non-cutting manner using a stamping process
DE202009003703U1 (en) 2009-03-18 2009-06-25 Felss Gmbh Forming tool, in particular kneading tool
AT510081B1 (en) * 2010-06-22 2012-05-15 Gfm-Gmbh FORGING DEVICE

Also Published As

Publication number Publication date
KR20240116747A (en) 2024-07-30
EP4186613C0 (en) 2023-11-22
WO2023099296A1 (en) 2023-06-08
CN118338976A (en) 2024-07-12
MX2024006582A (en) 2024-06-11
EP4186613A1 (en) 2023-05-31

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