EP1563920A1 - Presse zum Strangpressen von Rohren - Google Patents

Presse zum Strangpressen von Rohren Download PDF

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Publication number
EP1563920A1
EP1563920A1 EP05300105A EP05300105A EP1563920A1 EP 1563920 A1 EP1563920 A1 EP 1563920A1 EP 05300105 A EP05300105 A EP 05300105A EP 05300105 A EP05300105 A EP 05300105A EP 1563920 A1 EP1563920 A1 EP 1563920A1
Authority
EP
European Patent Office
Prior art keywords
spinning
needle
billet
follower
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05300105A
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English (en)
French (fr)
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EP1563920B1 (de
Inventor
Eric Paracuellos
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.)
Clecim SAS
Original Assignee
VAI Clecim SA
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 VAI Clecim SA filed Critical VAI Clecim SA
Publication of EP1563920A1 publication Critical patent/EP1563920A1/de
Application granted granted Critical
Publication of EP1563920B1 publication Critical patent/EP1563920B1/de
Not-in-force 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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • B21C23/217—Tube extrusion presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block

Definitions

  • the invention relates to a extrusion spinning press of a body such as a tube and has the object, in particular, of ensuring a perfect concentricity of the outer and inner profiles of the extruded tube.
  • an extrusion spinning press includes, in a way general, a fixed front and a rear crossmember, kept apart a constant distance by columns, a die mounted in a door die fixed on the bed base and defining a spinning axis, a container provided with a housing centered on the spinning axis and in which is threaded a billet cylindrical metal to spin and an elongated follower likely to penetrate into the housing of the container so that the metal of the billet compressed between the front face of the follower and the die, passes into it by forming, by extrusion an elongated product.
  • the front of the container is supported on the bed base that carries the die and the follower is mounted on a crossbar movable, under the action of the main cylinder, between the fixed beam and the bed frame.
  • the die is mounted at the end of a tubular follower taking support on the fixed bed base and the container takes support, by its rear face, on the movable crosspiece so as to slip on the tubular follower causing the extrusion of the metal of the billet.
  • the billet of metal introduced into the housing the container is traversed axially by a needle made of a rod rigid having an end which has a diameter a little smaller than that of the die and is placed substantially at the level thereof, so as to limit an annular space in which is extruded the metal of the billet into thus forming a hollow tubular product having an outer face and a face the dimensions of which are determined, respectively, by the and by the front end of the needle.
  • the external profile of a raw billet of metal to spin is not not always regular and its dimensions must, necessarily be a little lower than those of the container housing to allow its introduction in this one. Since the length of the billet can vary, the length of the dwelling must correspond to the maximum length of the billet.
  • the needle extends cantilevered from the crusher and its diameter is necessarily small, it may tend to deviate and must be guided.
  • the needle is mounted sliding inside the follower, that is to say on a length of the same order than that of a billet.
  • the control rod is articulated to its ends respectively on the needle and on the piston rod and is guided axially along its travel length in a fixed tube penetrating inside the piston of the main cylinder. It must therefore be slidably mounted along said tube.
  • the thrust cylinder of the needle is usually placed inside the piston of the main cylinder which thus constitutes the body of this piercing cylinder.
  • the needle must then be carried by an auxiliary cross mounted sliding inside a front part of the movable cross.
  • This cross is guided by two side devices mounted on either side of the main cylinder to ensure, on the one hand, guiding the needle and, on the other hand, stopping it in the spinning position, by means of two stops, which must be relatively spaced from each other, on both sides of the main cylinder.
  • two stops which must be relatively spaced from each other, on both sides of the main cylinder.
  • he can produce a slight shift between these two lateral stops, likely to generate a parasitic force, perpendicular to the spinning direction, which can cause the needle to shift relative to the container and to the die.
  • the different parts of the machine can deform.
  • the object of the invention is to solve such problems by means of a press implementing a set of characteristics that cooperate between them so as to ensure, in all phases of the process, a perfect alignment of the different members on the spinning axis. We thus obtain a excellent concentricity of the inner and outer sides of the product extruded, allowing to control the thickness of the tubular wall with a very low tolerance.
  • the piston of the main cylinder is extended towards the rear, over a length at least equal to its stroke, by a part tubular sealingly through the body of the main cylinder so that the needle control rod is guided axially in a conduit arranged inside the follower, the piston and the said rear extension, on a guide length of at least three times the length of the dwelling of the container and, in the rear position of the gland, the front face of the the last is separated from the die by a loading space of length less than that of the housing, the container being axially displaceable between a rear loading position of a billet in said space, for which the container housing is threaded on the follower and a position before pressing the die after threading the housing on the billet, the latter being held tight between the die and the front of the gland.
  • the billet is always perfectly centered with respect to the side wall of the housing and is subjected, during the packing in advance of the gland, to an expansion in all directions with regular support throughout the periphery housing, so that during the drilling of the billet by advancement of the needle, it is subject to no parasitic effort likely to cause misalignment.
  • the rod command is associated with a stop centered on the spinning axis and coming from take support, in the forward position of the needle, on a fixed wedge placed the rear of the fixed beam and providing at least two points of support spaced apart on both sides of the spinning axis, at a short distance from it.
  • this stop comes to bear on an eclipsable wedge having two positions, respectively a closed stop position of the stop and an open position of passage of the stop, allowing the advancement of the needle with the follower, as and when spinning the billet.
  • this shim is fixed on a rear part the body of the main cylinder, at a distance of the order of one time the length container housing.
  • the stroke of the needle control cylinder is of the order once the length of the dwelling.
  • the main cylinder presents also a run of order of one times the length of housing and the whole press, including the needle control cylinder, then extends over a total length of the order of 6 times said length of housing.
  • the fixed wedge on which comes to rest the stop of the control rod is eclipsable and can take two positions, respectively one position closed stop of the stop and an open position of passage of the stop, allowing the advancement of the needle with the follower, as and when spinning the billet.
  • the press according to the invention can then operate by the method of accompanied needle, the stroke of the needle control cylinder being on the order of twice the length of the dwelling, respectively once for drilling and once for spinning.
  • the main cylinder also presents a race of the order of one time the length of the dwelling and, the whole of the press, including the actuator cylinder of the needle, then extends over a length total of about 7 times this length.
  • the eclipsable wedge is consisting of a fork-shaped plate provided with a notch width equal to that of the needle control rod and associated with a means for controlling its sliding between two positions, respectively an open position away from the control rod and allowing the axial sliding thereof, and a closed position for which the fork-shaped plate caps the control rod so to oppose the sliding of the control rod in a position stopping the stop.
  • the support position of the stop on the fixed wedge is adjustable axially so as to allow adjustment of the level of the front end of the needle relative to the die.
  • the stopping stop of the needle may consist of a nut screwed on an external thread of the control rod and whose position the long of it can be adjusted by rotating the nut relative to the rod of ordered.
  • the press has means for controlling the rotation of the control rod with the needle around the spinning axis, for adjusting the orientation of the front end of the needle relative to the die.
  • Figure 1 which shows schematically the whole of a press the direct method, only the essential organs of the press which, as usually, main cylinder 1 mounted on a fixed rear crossmember 10, a die 2 mounted in a die holder 21 fixed on a fixed front bed base 20, a container 3 and a spinning follower 4 carried by a mobile crosspiece 40. All these organs are centered on a x'x spinning axis passing through the center of die 2 which is extended by an axial duct 22 formed in the bed base 20 for evacuation of the spun product.
  • the rear crossmember 10 and the front beam 20 are fixed on a solid mass foundations and kept apart from one another by a constant distance, by columns not shown in the diagram.
  • the press has, as usual, various organs auxiliaries, such as two pairs of lateral cylinders acting respectively on a container cradle 30 for the independent movement of this, and on the mobile crosspiece 40 to possibly control the displacing the follower 4 without pressurizing the main cylinder 1.
  • organs auxiliaries such as two pairs of lateral cylinders acting respectively on a container cradle 30 for the independent movement of this, and on the mobile crosspiece 40 to possibly control the displacing the follower 4 without pressurizing the main cylinder 1.
  • the container 3 is provided with a housing cylindrical 31 centered on the spinning axis x'x and into which is introduced a billet 5 of metal to spin.
  • the container 3 is applied against the die 2 and the follower 4, pushed back by the main cylinder 1, enters the housing 31 so as to force the metal of the billet 5 to pass through the die 2 to form an extruded product 5 '.
  • the follower 4 is constituted by a spindle-shaped piece of length I 1 and having a front face of diameter a little smaller than that of the housing 31 of the container 3.
  • the front of the crusher is therefore consists of a piece 42 in the form of a disk, called a grain of push, which is removably mounted at the front end of a rod 4 ' extending cantilevered from the movable crosshead.
  • this pushing grain 42 is included in the shirt which is evacuated by scraping, with removal of the grain. It must therefore be cleaned before it can be reused and, in the meantime, it is replaced by a new grain for spinning the next billet.
  • the rod 4 'and the grain 42 forming the follower 4 are pierced with an axial duct in which is slidably mounted a rod lengthened 6 forming a needle capable of axially crossing the billet 5 of metal to be spun to the position shown in FIG. the leading end 61 of the needle 6, which has a diameter smaller than that of the sector 2, is located substantially at the level of the latter, in order to limit a an annular space for the passage of the metal, the spun product 5 'thus having the shape of a tube having an outer face 51 and an inner face 52 whose dimensions are determined by those of the die 2 and the front end 61 of the needle 6.
  • the needle is slidably mounted axially in the follower and its position can be adjusted by means of a cylinder 7 placed at the back of the press and connected to the needle by a control rod 62 passing through the bottom 14 and the piston 11 of the main spinning jack 1.
  • This position depends, moreover, of the spinning technique implemented and must be precisely regulated. For example, it is preferable, in some cases, to maintain the end 61 of the needle 6 slightly set back from the die 2.
  • the regularity of the thickness of the tubular wall 5 ' depends on the concentricity of the needle 6 and the die 2.
  • the object of the invention is to solve this problem by means of a set of characteristics that combine their effects so as to avoid play and stray forces, and thus keep the needle perfectly centered on the spinning axis during drilling and spinning operations, in order to to ensure perfect concentricity of the inner 52 and outer 51 faces of the extruded tube 5 '.
  • the container 3 is applied to the bed base 20 carrying the die 2 and the billet 5 is placed by means of a loader into a space left between the rear face of the container 3 and the front face of the follower 4 then it is repelled by the follower by sliding axially on the loader, in order to to enter the housing 31 of the container. She then rests along a generator on the underside of housing 31 and the game between the face lateral 53 of the billet and the inner face of the housing 31 is not regular.
  • the container is first threaded onto the follower and applied to the mobile traverse.
  • the billet is thus introduced into the space between the die and the follower and can be perfectly centered on the spinning axis at way of the loader.
  • the crusher is then advanced so as to pinch the billet between his face front and die, which allows the loader to be removed and pushed back the front of the container to apply it on the bed base, by threading the housing 31 on the billet thus held tight between the die and the follower.
  • the billet 5 remained centered on the spinning axis and is thus surrounded, on all its periphery, with a game of approximately constant thickness between its lateral face 53 and the internal face housing 31.
  • the metal fills the housing symmetrically by exerting on its internal side a pressure regularly distributed in all directions.
  • the length of the press, between the bed base and the fixed crossbar is relatively reduced and so it is possible without unduly increasing congestion of the press to control the sliding of the needle for drilling and adjust its axial position by means of a cylinder centered on the x'x spinning axis and placed on the back of the fixed transom.
  • the body 72 of the drilling jack 7 can therefore be fixed directly on the foundation and / or connected by columns 81 to the body 12 of the main cylinder 1.
  • the piston 71 of the cylinder 7 drills on the control rod 62 an effort that remains always well centered on the x'x spinning axis.
  • the control rod 62 is extended rearwardly to the piercing cylinder 7 and must therefore axially cross the bottom 14 of the main cylinder 1.
  • the piston 1 of the main cylinder is extended rearwardly by a portion 13 in the form of cylindrical sheath which passes through the bottom 14 of the body 12 of the jack , an annular seal of known type, sealing against the pressure in the main cylinder.
  • This rear extension 13 of the piston 11 extends over a length I 2 at least equal to the stroke C of the jack which, as will be seen later, may be of the order of the length L of the housing 31 corresponding to the maximum length of a billet to spin.
  • the length I 1 of the gland must also be at least equal to the maximum length L of a billet.
  • control rod 62 and the needle 6 are guided in a central duct 60 drilled axially in the piston of the main cylinder extended forward by the follower 4 and backwards by the sealing sleeve 13.
  • the guide length is therefore, at any time, at least equal to three times the length L of the housing 31 of the container.
  • the needle 6 must be able to be replaced and is, normally, screwed by its rear part on the front end of the control rod 62, to form a sliding assembly which is guided axially, at least at the front on the follower 4 and at the rear on the extension 13 of the piston 11.
  • These two guide zones which can, moreover, be formed by axial bearings, are separated by a distance of not less than 3L and move with the main cylinder, when spinning.
  • control rod 62 can be dimensioned so to withstand buckling during drilling as well as transverse forces optionally applied by the needle 6 on its front end.
  • the advance of the piston 71 of the piercing cylinder 7 can be stopped in a precise position by a stop 74 mounted on the control rod 62 of the needle 6, this stop 74 coming to bear on a fixed fixed block 8 the rear part of the body 12 of the main cylinder 1.
  • the abutment 74 is placed at the junction 62b with the piston rod 73 and has an annular shape, the wedge 8 being constituted by a circular bearing provided at the end of the piston.
  • a rear extension 15 of the body 12 of the jack 1 which surrounds the sealing sheath 13 at a small distance from it and extends over a length I 3 which is also of the order of the maximum length L d a billet to spin.
  • the centering of the needle is still favored, according to the invention, by the use of the technique of loading by pinching of the billet, which makes it possible to produce compact presses having a reduced length.
  • FIG. 3 shows the step of placing, in the spinning axis, a billet 5 of metal to spin having a diameter d and a length that can slightly vary but is at most L.
  • the length of the housing 31 of the container 3 must be at least equal to this maximum length L and its diameter d1 must be a little greater than the diameter d of the raw billet 5 whose profile is not not always regular.
  • the follower 4 which penetrates inside the housing 31 of the container 3 must have a length I 1 a little greater than L and carries a push grain diameter a little smaller than the diameter d 1 of the housing 31 so as to leave a gap simply allowing the penetration of the follower 4 into the housing 31 by reducing as much as possible the thickness of the liner which forms, during spinning, along the wall of the housing 31.
  • this push grain is removed with the shirt, at the end of the previous spinning operation.
  • the crusher is then consisting only of the rod 4 'support grain.
  • the movable cross member 40 can be retracted as far as possible, the piston principal 11 being fully returned.
  • Container 3 is also backed up back as far as the stop on the moving cross-member, so that its housing 31 is threaded on the follower rod 4 '.
  • This arrangement allows to leave between the front end of the rod 4 ' and the die a free space 50 whose length must be only sufficient to allow the introduction of the new billet 5 by means of a loading device 55, for example a shovel.
  • a loading device 55 for example a shovel.
  • the front end 41 of the follower rod 4 ' In this position rear of the movable cross member 40, the front end 41 of the follower rod 4 ' must be removed from the sector 2 by a distance slightly greater than the maximum length L of the billet 5 so as to leave, forwards and backwards the games necessary for the establishment of this one.
  • the distance between the die 2 and the mobile traverse 40 must therefore be only a little over twice the maximum length L of a billet.
  • the spacing between the bearing bed 20 the die 2 and the fixed crosspiece 10 carrying the main cylinder 1 can be reduced to maximum, which also reduces the possibilities of deformation and misalignment of the various organs and, therefore, to promote their perfect centering on the x'x spinning axis.
  • Figure 4 illustrates the step of threading the new billet 5 to inside the container 3.
  • the movable crosshead 40 is first advanced from way to catch up by pinching the billet 5 between the die 2 and the end before 41 of the follower rod 4 '.
  • the billet 5 thus held tight between the rod 4 'and the die 2, remains perfectly centered on the x'x spinning axis and the device can be removed from loading then advance the container 3 by means of its auxiliary cylinders, to put it on the billet 5.
  • the thrust exerted must be simply sufficient to achieve a expansion of the billet which can be exerted symmetrically in all directions, as shown in Figure 5. After this first time of compression, the side wall 53 of the billet therefore applies regular over the entire inner face of housing 31.
  • the billet which has always remained perfectly centered on the axis of spinning, is then maintained by the inner wall of the housing 31 and is therefore possible to suppress the clamping force by pulling back the moving crosspiece in the position shown in Figure 6 to remove the rod 4 'of housing 31 leaving, between its end 41 and the rear face 32 of the container 3, a sufficient space for placing the thrust 42.
  • the mobile crosspiece 40 is then advanced again to apply the push grain 42 on the billet and realize the second time of the compression phase. Thanks to the push grain, the compressive force exercised by the main cylinder 1 may be of the same order as that required extrusion.
  • the follower 4 is moved back slightly to leave behind the billet, a space necessary for its lengthening during drilling which is then carried out by means of the needle 6 pushed back by the cylinder 7. Then spinning can be done, the needle being stopped at wanted by the stop 74.
  • the drilling cylinder 7 is placed behind the main cylinder 1, the needle 6 and its control rod 62 form a guided assembly on a long, at least 3L in the central duct 60 and subject only at applied forces behind the guide duct and in the axis of it.
  • the advancement of the needle 6 is stopped by the stop 74 and the stopping block 8 has at least two parts placed symmetrically and close to the x'x spinning axis, which avoids any parasitic effort on the needle at the time of shutdown.
  • the press according to the invention brings together a set of characteristics that cooperate with each other to ensure the centering of the needle on the axis of die 2 during drilling and during spinning and to obtain, thus, a perfect concentricity of the inner 52 and outer 51 faces of the 5 'spun product.
  • control rod 62 of the needle abuts, in the forward position, on a bearing surface 15 which can be formed on a part integral with the body of the main cylinder or attached directly to the foundation.
  • stop position of the stop relative to the fixed bed base 20 and in die 2 could be modified by means easy to design to adjust the exact position of the nose 61 of the needle 6 relative to the sector 2.
  • the holds 8 may be eclipsable so as to present two positions, respectively a closed position stopping the needle 6 in the starting spinning position shown in Figure 1 and an open position allowing the passage of the stop 74 to advance the needle 6 during spinning.
  • the abutment 74 and the bearing surface 8 could be provided with indentations permitting, by rotation about the x'x axis of spinning move from a closed stop position of the stop 74 to an open position of passage of it.
  • the actuator drilling 7 must have a stroke of the order of 2 times the length of the billet after tamping since it must first order the drilling of the billet with an advancement of the same length of the needle 6 with respect to follower 4 which is stopped, then a simultaneous advance of the follower 4 and the needle 6, substantially on the same length.
  • the stroke of the piercing cylinder 7 can be reduced to once the length of housing 31 and the size of the press from the bed base is then of the order of 6 times this length.
  • FIG. 7 shows the whole of a spinning press capable of functioning, as required, as a stopped needle or needle accompanied and equipped, for this purpose, means for adjusting the the stop position and means of eclipse of the stop represented more in detail in Figures 8, 9, 10.
  • Figure 7 shows in perspective, with partial snatch, the whole of a press according to the invention comprising, in a conventional manner a jack main 1 mounted on a fixed rear crossmember 10, a die 2 mounted on a front bed base 20, a container 3 mounted on a cross member 30 whose position can be adjusted by jacks 35 and a movable cross member 40 carrying a spinning follower 4 and actuated by auxiliary cylinders 45.
  • the piston 11 of the main cylinder 1 is extended towards the rear by a cylindrical sheath 13 which tightly crosses the bottom 14 of the body 12 of the cylinder.
  • a conduit of passage centered on the spinning axis and in which is slidably mounted control rod 62 fixed, by its front end 62a, on a needle 6 of the tube, and by its rear end 62b, on the rod 73 of the cylinder 7 of control of the axial sliding of the needle 6.
  • the rod of control comprises a rear portion fixed on the rod 73 of the cylinder 7 and a front part forming a mandrel on which is screwed the needle 6, the assembly being guided axially, at the front in the follower 4 and at the rear in the extension 13 of the piston 11.
  • control jack 7 is placed at the rear of the jack in the spinning axis and, as shown in Figure 8, it can be mounted on the rear portion of a support frame 80, having two uprights attached to the foundation, but also connected to the body of the main cylinder 1 by prestressed rods 81.
  • the body 72 of the piercing cylinder 7 is thus maintained at a distance rigorously constant of the die 2, behind the main jack 1.
  • the press shown in FIG. 7 is provided to work, either with a stopped needle or with a needle.
  • the stroke of the piercing cylinder 7 should be about 2L and the stop 74 mounted on the control rod 62 must be able to move at least length L inside the frame 80, before being stopped by the wedge 8 which, in this arrangement, is mounted at the front of the frame 80.
  • the abutment 74 is in the form of a tubular sleeve internally threaded with to form a nut which, by rotation around the axis x'x is screwed on a conjugated thread 63 formed on the outer face of the control rod 62.
  • a rotation about its axis of the nut 74 allows it to move axially along the rod 62 which is locked in rotation.
  • the outer face 75 of the nut 74 is provided on all its length, of a set of teeth 75 parallel to the axis x'x, on which meshes with pinion 82 rotated, in one direction or the other, by an engine 83 fixed on a corresponding platform of the auxiliary frame 9 and this last is slidably mounted, parallel to the x'x spinning axis, inside fixed frame 80, and is connected to the control rod 62 so as to move with it under the action of the cylinder 7.
  • the rotation of the pinion 82 which meshes with the toothing 75 with possibility of axial sliding, controls the rotation around its axis of the nut 74 which moves axially, in one direction or the other, along of the rod 62 locked in rotation.
  • Figures 7 and 8 show the relative positions of the different organs before drilling. Drilling cylinder 7 is fully retracted. The billet 5 is inside the container 3 housing and has undergone a first tamping to allow the recoil of the mobile cross member 40 and the laying new thrust 42.
  • this wedge consists of a fork-shaped plate 8, slidably mounted vertically along the front post of the frame 80 and provided with a notch 84 facing downwards and having a width equal to the diameter of the control rod 62.
  • the notch 84 comes to cap the control rod 62 and then opposes the passage of the stop 74 whose axial position along the rod 62, can be adjusted by means of the motor 83, as indicated more high.
  • This stopping position on the hold 8 therefore determines the level of the end 61 of the needle 6 relative to the die 2 at the time of the stop.
  • the spinning can then begin by actuating the main jack 1 which repels the follower 4.
  • the needle 6 is maintained in this position by the shim 8, the cylinder 7 being blocked so as to maintain the position of the stop 74 and, therefore, the nose 61 of the needle 6 relative to the sector 2.
  • the hold 8 is raised by the cylinder 85 and allows the passage of the stop in form
  • the actuator 7 is then energized to advance the needle 6 same time as the follower 4 and its effect is thus added to that of the cylinder principal 1.
  • the press may be provided with certain devices auxiliaries such as, for example, a cooling circuit 64 arranged in the axis of the needle 6 and the control rod 62 and, if appropriate, a device for rotating the needle about its axis for the extrusion of products with a particular section.
  • auxiliaries such as, for example, a cooling circuit 64 arranged in the axis of the needle 6 and the control rod 62 and, if appropriate, a device for rotating the needle about its axis for the extrusion of products with a particular section.
  • the die 2 and the needle 6 have, usually, concentric circular profiles but it is possible also to spin products with an external profile and / or an internal profile not circular. In this case, it is often necessary to have the possibility of adjust the orientation of the internal profile with respect to the external profile. It is why, in the exemplary embodiment shown in FIGS. 6 to 9, the sliding carriage 9 of motor support 83 of adjustment of the stop 74 door a bearing 90 of centering of the front end of the piston rod 73 of the jack 17, allowing the rotation, about the x'x axis, of the whole of the piston 73, rod 62 and needle 6.
  • the carriage 9 carries, on the other hand, a control motor 91 of the orientation of the piston 73 and the needle 6 via a pinion 92 connected by a chain 93 to a toothed wheel 94 integral in rotation with the rod piston 73.
  • the motor 91 thus makes it possible to adjust accurately, before drilling, the orientation of the needle 6 around the x'x spinning axis.
  • the orientation device being mounted on the sliding carriage 9, it is possible, if necessary, to change the orientation of the needle 6 to course of spinning.
  • the rotation of it could be controlled by a axially displaceable finger under the action of a jack and engaging in a helical groove on the outer face of the nut.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Extrusion Of Metal (AREA)
EP20050300105 2004-02-10 2005-02-09 Presse zum Strangpressen von Rohren Not-in-force EP1563920B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0450231A FR2865947B1 (fr) 2004-02-10 2004-02-10 Presse de filage de tubes
FR0450231 2004-02-10

Publications (2)

Publication Number Publication Date
EP1563920A1 true EP1563920A1 (de) 2005-08-17
EP1563920B1 EP1563920B1 (de) 2007-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050300105 Not-in-force EP1563920B1 (de) 2004-02-10 2005-02-09 Presse zum Strangpressen von Rohren

Country Status (4)

Country Link
EP (1) EP1563920B1 (de)
DE (1) DE602005002157T2 (de)
ES (1) ES2292088T3 (de)
FR (1) FR2865947B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009008819A1 (en) * 2007-07-06 2009-01-15 Sandvik Intellectual Property Ab A system operable to extrude metallic materials
CN103028627A (zh) * 2012-12-29 2013-04-10 中国重型机械研究院股份公司 复合穿孔式双动挤压装置及方法
CN103042059A (zh) * 2012-12-23 2013-04-17 中国重型机械研究院股份公司 铝挤压机挤压容室挤压装置及挤压方法
CN112246903A (zh) * 2020-09-25 2021-01-22 北京工业大学 一种杆针分离的镁合金细管制备装置与方法

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CN103381429B (zh) * 2013-07-11 2016-01-20 佛山市南海区明晟机械制造有限公司 用于加工变断面无缝管的挤压机
CN104368617B (zh) * 2014-11-06 2016-08-31 邯郸新兴特种管材有限公司 一种交叉扩孔法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE167392C (de) *
GB190921846A (en) * 1909-09-24 1909-12-16 Wilhelm Feuerhake Improvements in the Manufacture of Seamless Metal Tubes.
GB257887A (en) * 1925-09-02 1926-10-07 Schloemann Ag Improvements in hydraulic presses for the extrusion of seamless tubes
GB512115A (en) * 1938-01-10 1939-08-29 Schloemann Ag Improvements in or relating to metal tube extrusion presses
DE900084C (de) * 1944-05-16 1953-12-21 Adolf Kreuser G M B H Liegende Metallrohrpresse
US3345851A (en) * 1964-01-10 1967-10-10 Loewy Eng Co Ltd Mandrel attachments for metal tube extrusion presses
US3528275A (en) * 1965-11-11 1970-09-15 Demag Ag Method and apparatus for extruding hollow articles
US4631949A (en) * 1982-08-31 1986-12-30 Furukawa Aluminum Co., Ltd. Method of loading billet in the indirect extruding press

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE167392C (de) *
GB190921846A (en) * 1909-09-24 1909-12-16 Wilhelm Feuerhake Improvements in the Manufacture of Seamless Metal Tubes.
GB257887A (en) * 1925-09-02 1926-10-07 Schloemann Ag Improvements in hydraulic presses for the extrusion of seamless tubes
GB512115A (en) * 1938-01-10 1939-08-29 Schloemann Ag Improvements in or relating to metal tube extrusion presses
DE900084C (de) * 1944-05-16 1953-12-21 Adolf Kreuser G M B H Liegende Metallrohrpresse
US3345851A (en) * 1964-01-10 1967-10-10 Loewy Eng Co Ltd Mandrel attachments for metal tube extrusion presses
US3528275A (en) * 1965-11-11 1970-09-15 Demag Ag Method and apparatus for extruding hollow articles
US4631949A (en) * 1982-08-31 1986-12-30 Furukawa Aluminum Co., Ltd. Method of loading billet in the indirect extruding press

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009008819A1 (en) * 2007-07-06 2009-01-15 Sandvik Intellectual Property Ab A system operable to extrude metallic materials
CN103042059A (zh) * 2012-12-23 2013-04-17 中国重型机械研究院股份公司 铝挤压机挤压容室挤压装置及挤压方法
CN103042059B (zh) * 2012-12-23 2014-07-02 中国重型机械研究院股份公司 铝挤压机挤压容室挤压装置及挤压方法
CN103028627A (zh) * 2012-12-29 2013-04-10 中国重型机械研究院股份公司 复合穿孔式双动挤压装置及方法
CN103028627B (zh) * 2012-12-29 2013-11-20 中国重型机械研究院股份公司 复合穿孔式双动挤压装置及方法
CN112246903A (zh) * 2020-09-25 2021-01-22 北京工业大学 一种杆针分离的镁合金细管制备装置与方法

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DE602005002157D1 (de) 2007-10-11
EP1563920B1 (de) 2007-08-29
ES2292088T3 (es) 2008-03-01
FR2865947B1 (fr) 2007-03-30
FR2865947A1 (fr) 2005-08-12

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