EP1850980A1 - Presse d'extrusion - Google Patents
Presse d'extrusionInfo
- Publication number
- EP1850980A1 EP1850980A1 EP06709495A EP06709495A EP1850980A1 EP 1850980 A1 EP1850980 A1 EP 1850980A1 EP 06709495 A EP06709495 A EP 06709495A EP 06709495 A EP06709495 A EP 06709495A EP 1850980 A1 EP1850980 A1 EP 1850980A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fixed
- extrusion
- extrusion press
- press according
- ear
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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
Definitions
- the invention relates to an extrusion spinning press. More particularly, the invention relates to a fixed crossbar for such a press. It is known that an extrusion spinning machine usually comprises along a spinning axis:
- a container placed between the fixed crossbar and the bed base and provided with a housing centered on the spinning axis, having a diameter and a length corresponding to the diameter and the length of a spinning billet slipped into this housing, the container having a front face facing the bed base and a rear face facing the fixed cross,
- a main spinning jack having a cylinder body bearing on the fixed beam and a piston determining the extrusion by the die of the billet metal compressed by threading a follower in the housing of the container.
- the piston of the main cylinder is supported on a movable crosshead moving between the bed base and the fixed beam.
- the container is fixed and is supported, by a front face, on the die carried by the bed frame, and the follower is mounted on the movable cross member so as to penetrate into the housing, under the action of the jack main.
- the die is mounted at the end of a fixed tubular follower bearing on the bed base, and the container is supported by its rear face on the movable cross member so that the housing is threaded on the follower tubular by causing the extrusion of the metal by the die.
- the fixed crosspiece of a spinning press is a support for the body of the main spinning jack which, by advancing the piston, determines the extrusion of the metal by the die carried by the bed. This cross therefore tends to move away from the bed base and must be maintained at a constant distance from it by tie rods which are often prestressed.
- the piston of the main cylinder is supported on a movable cross member which carries the follower in the direct spinning and pushes the container in the reverse spinning.
- This movable cross member must be able to be moved independently between the bed base and the fixed crossbar for the various maneuvers, for example loading the billet.
- the main cylinder the movable crosshead is actuated by at least two auxiliary cylinders bearing on the fixed crossbar.
- the container can be moved by means of auxiliary cylinders also bearing on the fixed crossbar.
- the fixed crossbar thus forms a transverse beam, connected to the bed frame by tie rods and having a central support portion of the main cylinder and the lateral support portions of the tie rods and auxiliary cylinders for maneuvering the movable cross member and the container.
- the body of the main cylinder forms a cylindrical yoke closed by a bottom and threaded into two circular orifices centered on the spinning axis and arranged on the two front and rear flanges of the fixed crossbar, the front portion of the cylinder head being supported on the front flange by an outer flange-shaped flange.
- the two flanges are provided with holes aligned in pairs and distributed around the cylinder head, in which are threaded the ends of the tie rods and the auxiliary cylinders.
- the extrusion operations controlled by the main cylinder follow one another at a sufficient rate high and after spinning a billet, the movable crosshead must be moved between the bed frame and the fixed cross by means of auxiliary actuating cylinders so as to allow the loading of the next billet.
- the container is moved by means of auxiliary cylinders maneuvering the container.
- the main cylinder is actuated to control the extrusion of the metal.
- the invention therefore aims to solve the problems mentioned above by proposing a spinning press having a fixed crossbar having increased resistance to high speeds, and therefore a longer life.
- the invention also aims to provide a spinning press comprising a simplified implementation fixed cross member for rapid assembly and disassembly of the spinning press.
- the invention also aims to provide an alternative to existing fixed sleepers by providing a fixed cross which is more compact.
- extrusion press comprising, in general:
- a main spinning jack comprising a tubular body closed by a bottom on the opposite side of the die and limiting a cylindrical chamber centered on the spinning axis and in which slides an extrusion piston, a fixed crosspiece spaced axially from the bed base and on which the body of the main jack rests,
- tie-rods fixed at their ends, respectively on the bed base and on the fixed crossbar, for maintaining a constant distance between them;
- the fixed crosspiece comprises a massive one-piece piece, with a central portion forming the body of the main jack, in which is formed a bore forming the chamber of said jack, and at least two extensions in the form of ears, s extending outwardly from the central part, and on which bear, respectively, the ends of at least two tie rods for maintaining the spacing between the fixed crossmember and the bed base.
- each holding tie is provided with an attachment end on a corresponding lug of the solid crossbar, bearing on it in two opposite directions, respectively towards the rear and towards the front.
- each ear-shaped extension of the central portion of the solid crosspiece is traversed by a duct extending between two spaced apart support faces, respectively front and rear, of said ear, for the passage of a fixing end of a holding tie bearing in two opposite directions, respectively on said front and rear faces of said ear.
- At least the bearing faces placed on the same side, respectively front or rear, ears are placed in the same plane perpendicular to the spinning axis, so as to form together a face application of a fastening plate of the ends of the tie rods and comprising, on the one hand at each ear, a bearing portion of the corresponding tie rod and on the other hand, between two ears, at least a portion of support for at least one auxiliary operating device.
- the ears of the crosspiece extend over a length less than that of the central portion, so as to provide a front support face being set back from the front end of the central part and on which is supported the front fixing plate, the latter being provided with a central orifice in which the front end of the the central part of the massive crossing.
- the front end of the central portion of the solid crossbar is provided with an external counterbore having an annular bottom placed at the same level as the front bearing face and in which the front fixing plate is fitted with .
- the front attachment plate is interposed between the front support face of each lug and a fixing member of the corresponding tie bearing on said lug, at least in the opposite direction of the extrusion direction.
- Each holding tie rod is threaded into a hollow column extending between the bed base and the fixed cross member and is subjected to a prestressing tension by bearing on a rear face of the corresponding ear, said hollow column being supported in the opposite direction. inverse, on a front face of said ear, preferably via a plate for fixing at least one auxiliary operating member.
- a movable crosshead is slidably mounted axially between the fixed crossmember and the bed base while resting on the container in the extrusion direction, and is actuated by at least two auxiliary actuating cylinders each having a body and a bearing rod , respectively, on the massive crossbar and on the movable crosshead for the displacement of the latter, the body of each auxiliary actuating cylinder of the movable crosshead being fixed on a part of the front attachment plate between two ears of the massive crossbar .
- the press advantageously comprises at least two auxiliary jacks for maneuvering the container, each having a body and a rod supported respectively on the fixed cross member and on the container, the body of each auxiliary actuating cylinder of the container being fixed on a part of the front attachment plate between two ears of the massive beam.
- the body of each auxiliary actuating cylinder has a front end fixed to the front attachment plate so as to bear thereon in the extrusion direction and in the opposite direction, and a bearing rear end on a rear fixing plate fixed on the back faces of the ears of the massive crossbar.
- each auxiliary operating cylinder is threaded into at least one bore of the same diameter arranged at least on the front attachment plate and has a shoulder bearing on said front attachment plate at least in the opposite direction to the direction extrusion.
- the body of the main cylinder comprises a cylindrical tubular portion consisting of the central portion of the massive crossbar surrounding the bore forming the cylinder chamber and a cup-shaped bottom welded on the periphery of the bore, to a rear end of the tubular part.
- the central part and the ears of the massive crossbar are made in one piece by forging.
- the holding rods and the ears are centered in planes passing through the spinning axis and regularly distributed around it.
- FIG. 1 shows, in perspective and in partial section, a fixed cross member according to the prior art in which is housed a main cylinder body and two auxiliary jacks for maneuvering;
- FIG. 2 shows, in cross section, the fixed cross member according to the prior art of Figure 1;
- FIG. 3A shows, in axial section, a fixed cross member according to the invention
- FIG. 3B shows, in front view, the fixed cross member according to the invention
- Figure 4 shows, in perspective and in partial section, the fixed crosspiece of Figure 3A carrying a movable cross with an auxiliary actuating jack;
- FIG. 5 shows, in perspective, the fixed crosspiece of Figure 3A on which is fixed the end of a holding tie rod and an associated hollow column, an auxiliary actuating cylinder of the container and an auxiliary actuating cylinder of the mobile crossmember carrying the associated moving crosshead.
- FIGS. 1 and 2 represent, by way of example, a fixed crossmember according to the prior art, forming a beam made of welded construction with two spaced apart flanges 10, 12 respectively limiting two circular orifices centered on the spinning axis A, which form the front and rear faces of a cylindrical housing in which is inserted the body 2 of the main spinning jack which bears, via a flange 20, on the front flange 10 Fixed transom 1.
- Figures 1 and 2 show only the fixed crosshead and the main cylinder body, and two auxiliary cylinders.
- the other organs of the press can be of any known type and are not represented.
- the flanges 10 and 12 of substantially square shape are thick plates of metal in which are respectively formed, two axial bores 11 and
- the inner diameter of these axial bores corresponds to the outer diameter of the cylinder body 2 so as to receive the latter.
- the flanges 10 and 12 respectively comprise peripheral bores which, preferably, are distributed symmetrically about the spinning axis A. In FIG. 2, eight peripheral bores are shown.
- the flanges 10 and 12 respectively comprise a first series of four peripheral bores 18 and 18 'intended for receive one end of the holding tie rods extending between the fixed cross member 1 and the bed frame.
- these peripheral bores for tie rods 18 and 18 ' are located in axial planes oriented at ⁇ 45 ° with respect to the horizontal.
- the flanges 10 and 12 respectively comprise a second series of four peripheral bores 19 and 19 'intended to support auxiliary operating cylinders 70 and 80 (FIG. 1), making it possible to move, respectively, the movable crosshead or the container, forward or backward along the spinning axis A.
- the peripheral bores for auxiliary operating cylinders 19 and 19 ' are substantially placed in the middle of the sides of the flanges 10 and 12, in horizontal and vertical axial planes.
- the front end of the body of an auxiliary actuating cylinder is housed in one of the peripheral bores before 19 and fixed on the front flange 10, and its end is housed in the corresponding peripheral rear bore 19 'and fixed on the rear flange 12.
- the flanges 10 and 12 are spaced perpendicular to the spinning axis A and held at a constant distance by a corresponding dimension structure forming a spacer.
- Figure 2 shows the fixed cross member 1 in cross section.
- the structure between the flanges 10 and 12 is constituted by a shell 14 and a plurality of plates or angles 16. The constituent elements of this structure are welded together, the structure is then itself welded to the flanges before 10 and rear 12.
- the angles 16 of the structure are arranged so as to reinforce the fixed crossbar 1 at the places where the support forces of the tie rods and the jacks are applied and to give the beam thus constituted the inertia necessary to withstand the extrusion efforts.
- angles 16 are arranged between the two flanges 10, 12 to form with the outer surface of the shell 14 reinforcing boxes in which pass the ends of the tie rods 18 and 18 '.
- the fixed cross member according to the invention consists of a single solid piece.
- This solid fixed crosspiece 100 comprises a central portion 102 in which is formed a main axial bore 101 whose axis coincides with the spinning axis A.
- the fixed crossbar is a simple beam in which the body of the main cylinder is threaded
- the central portion 102 of the solid part 100 which constitutes itself the cylinder body whose piston slides in the bore 101 which thus constitutes the chamber 4 of the main cylinder.
- This chamber 4 is closed at the rear by a bottom 3 preferably consisting of a separate portion in the form of a bowl, welded around the periphery of the bore 101, at a rear end 103 of the central portion 102.
- this bottom 3 may be solid or provided with an axial bore 31 allowing the sliding passage of an extension rod towards the rear of the piston of the jack.
- This solid fixed crosspiece 100 also comprises at least two extensions in the form of lugs protruding radially outwardly relative to the central portion 102 tubular.
- the massive fixed beam 100 comprises four such ears 105 a-d. They are distributed symmetrically around the spinning axis A. For example, the ears 105 a-d are arranged in axial planes passing through the spinning axis A and inclined at ⁇ 45 ° with respect to a horizontal plane.
- the central portion 102 and the lugs 105 a-d of the solid cross member 100 are made in one piece, for example by forging.
- the bore 101 of large diameter can be made by internal machining of a central orifice obtained during the forging.
- the tie rods for maintaining a constant distance between the solid fixed cross member 100 and the box spring (not shown) and the auxiliary actuating jacks of the container and the movable cross member bear in two opposite directions, towards the front and towards the rear, on the massive cross 100 which is both the cylinder body and the transverse support beam.
- Each lug 105 ad has the function of respectively providing support at the end of a holding tie 60 ad associated ( Figure 5), the other end of said tie bearing on the bed frame.
- Each lug 105 ad is traversed by a duct 106 ad associated cylindrical whose axis B ad is parallel to the axis of spinning A.
- Each duct 106 ad extends between a front bearing surface 107 ad and a bearing face rear 108 ad of the corresponding ear 105 ad.
- the conduits 106 ad have the function of forming a passage for the fixing end of the retaining tie rod 60 ad corresponding.
- the different front bearing faces 107 ad are located in the same plane before P1 perpendicular to the spinning axis A.
- the front bearing faces 107 ad together define, on the solid fixed beam 100, a surface before application 111.
- the different rear support faces 108 ad are located in the same rear plane P2 perpendicular to the spinning axis A.
- the rear support faces 108 ad together define the transom solid fixed 100, a rear application surface 113.
- at least the front application surface 111 is covered with a correspondingly shaped plate, with a hole central corresponding to the cylinder body and four star branches covering each of the ears.
- the ears 105 ad of the solid fixed beam 100 extend over a length less than that of the central portion 102, so that the application surface before 111 is set back from the front end 104 of the central portion 102.
- the front application surface 111 of the solid fixed beam 100 can receive the fixing plate before 110 which bears on said ear in the opposite direction of the direction of extrusion.
- the rear application surface 113 makes it possible to receive the rear fixing plate 112 which bears on the said ear in the direction of extrusion.
- the front attachment plate 110 has a front central opening 116 which fits on a front end 104 of the central portion 102. of the solid fixed beam 100.
- the front end 104 of the central portion 102 is provided with an external counterbore 120 having an annular bottom placed at the same level as the front application face 111 and in which comes fitting the front fixing plate 110, which is then provided with a circular central opening 116 whose inner diameter is adapted to the outside diameter of the counterbore 120.
- the rear mounting plate 112 has a rear central orifice intended to allow the passage of the bottom 3 so that the rear attachment plate actually comes into plane contact on the rear application surface 113 of the solid fixed beam 100.
- the rear plate 112 is in fact made up of two sub-plates 112a and 112b disposed respectively to the right and to the left of the bottom 3.
- the front fixing plate 110 (respectively the rear fixing plate 112) comprises a first series of front peripheral bores for the passage of the tie rods 118 (respectively rear peripheral bore for pulling 118 ') intended to cooperate with the conduits 106 ad so as to support the end of a holding tie rod 60.
- the front attachment plate 110 is interposed between a front support face 107 ad of an ear 105 ad and a fixing member of the tie rod 60 ad corresponds nt. It should be noted that the front 110 and rear 112 fixing plates are secured to the solid fixed beam 100 by the holding rods 60 a-d. In known manner, the tie rods are prestressed and, for this, each slipped into a hollow column interposed between the bed and the fixed cross, to prevent their approximation under the effect of prestressing.
- the attachment plates 110 and 112 also support the auxiliary operating cylinders.
- the front fixing plate 110 and the rear fixing plate 112 each comprise a second series of peripheral bores, respectively before 119 and rear 119 'aligned in pairs and in which are threaded auxiliary actuating cylinders: for example, as shown in FIG. 5, on each side of the spinning axis, an auxiliary cylinder for operating the movable cross member 70 is supported in lower peripheral bores 119 and 119 '; and an auxiliary actuating cylinder of the container 80 is supported in upper peripheral bores 119 and 119 '.
- the peripheral bores 119 and 119 ' four in number, are arranged symmetrically on either side of a horizontal axial plane.
- each auxiliary actuating cylinder 70, 80 has a front end fixed to the front fixing plate 110, so as to bear thereon in the extrusion direction and in the opposite direction.
- the rear end of the body 72, 82 of each auxiliary actuating cylinder 70, 80 is supported by the rear fixing rear plate 112.
- the reaction forces of the jacks or tie rods are applied preferably to the front mounting plate 110.
- the front mounting plate 110 is thicker than the rear mounting plate 112. The latter has the function of supporting the bodies of the auxiliary cylinders to ensure their perfect alignment.
- the outer shape of a 105 ad ear can vary.
- the ears have a polyhedral shape composed of flat surfaces.
- the lower lugs may be formed to have a horizontal bottom surface 109c and 109d which together define a horizontal base plan for resting the solid fixed beam 100 on a concrete slab.
- the lower lugs 105c and 105d respectively have grooves opening laterally outwards. The lower faces of these grooves are provided with bores opening on said lower surfaces 109c and 109d. They make it possible to insert fixing means perpendicularly to the horizontal lower surfaces 109c and 109d in order to fix the solid fixed crossmember 100 to the slab.
- the massive piece constituting the cross is preferably forged but could also be molded.
- the shape and number of ears 105 may vary. Given the forces to be borne, it is advantageous to pass the tie rods in the ears, the auxiliary cylinders being mounted simply on the fixing plates 110, 112 or even on a single plate before 110, but other provisions are possible, in particular to adapt to the specific characteristics of the press and its auxiliary organs.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Extrusion Of Metal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0550403A FR2881665B1 (fr) | 2005-02-10 | 2005-02-10 | Presse d'extraction |
| PCT/FR2006/050116 WO2006085032A1 (fr) | 2005-02-10 | 2006-02-09 | Presse d'extrusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1850980A1 true EP1850980A1 (fr) | 2007-11-07 |
| EP1850980B1 EP1850980B1 (fr) | 2008-12-31 |
Family
ID=34981298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06709495A Expired - Lifetime EP1850980B1 (fr) | 2005-02-10 | 2006-02-09 | Presse d'extrusion |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1850980B1 (fr) |
| DE (1) | DE602006004564D1 (fr) |
| ES (1) | ES2317504T3 (fr) |
| FR (1) | FR2881665B1 (fr) |
| WO (1) | WO2006085032A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE546590C (de) * | 1932-03-16 | Schloemann Akt Ges | Strangpresse | |
| DE156666C (fr) * | ||||
| DE530467C (de) * | 1928-03-25 | 1931-07-29 | Fried Krupp Grusonwerk Akt Ges | Liegende Strangpresse |
-
2005
- 2005-02-10 FR FR0550403A patent/FR2881665B1/fr not_active Expired - Fee Related
-
2006
- 2006-02-09 WO PCT/FR2006/050116 patent/WO2006085032A1/fr not_active Ceased
- 2006-02-09 ES ES06709495T patent/ES2317504T3/es not_active Expired - Lifetime
- 2006-02-09 EP EP06709495A patent/EP1850980B1/fr not_active Expired - Lifetime
- 2006-02-09 DE DE602006004564T patent/DE602006004564D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006085032A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006085032A1 (fr) | 2006-08-17 |
| EP1850980B1 (fr) | 2008-12-31 |
| DE602006004564D1 (de) | 2009-02-12 |
| FR2881665B1 (fr) | 2007-04-27 |
| ES2317504T3 (es) | 2009-04-16 |
| FR2881665A1 (fr) | 2006-08-11 |
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