EP1339511A1 - Verfahren und vorrichtung zur kontinuierlichen herstellung von werkstücken aus einem unprofilierten längsprofil sowie deren verwendung - Google Patents
Verfahren und vorrichtung zur kontinuierlichen herstellung von werkstücken aus einem unprofilierten längsprofil sowie deren verwendungInfo
- Publication number
- EP1339511A1 EP1339511A1 EP01989532A EP01989532A EP1339511A1 EP 1339511 A1 EP1339511 A1 EP 1339511A1 EP 01989532 A EP01989532 A EP 01989532A EP 01989532 A EP01989532 A EP 01989532A EP 1339511 A1 EP1339511 A1 EP 1339511A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- longitudinal profile
- longitudinal
- roller
- rollers
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/063—Making machine elements axles or shafts hollow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/12—Making machine elements axles or shafts of specially-shaped cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
- B24B39/04—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution
Definitions
- the invention relates to a method and a device for the continuous production of workpieces from an unprofiled longitudinal profile made of aluminum and / or alloys containing aluminum, and the use thereof.
- DE 1 111 660 B discloses a method and a device for improving the durability of components made of metal. Only the surface of the components should be differentially plastically deformed in linear patterns.
- DE 31 10 433 AI also discloses a method and a device for shaping, in particular, metallic workpieces, such as gears, shafts, cylindrical running surfaces, in order to produce workpieces of different materials with the same tools while maintaining the configuration of a tool geometry to enable.
- the present invention is therefore based on the object of providing a method and a device for the continuous production of workpieces with a round cross section or with bores or similar recesses from an unprofiled longitudinal profile, which is extremely simple in terms of construction and a production of workpieces of particular importance high strength and hardness as well as gas tightness with great accuracy and with low labor and cost Allow effort, as well as their use for the continuous production of workpieces, in the form of, for example, elongated profiles made of aluminum or alloys containing aluminum.
- the non-profiled longitudinal profile is initially at least partially acted upon by at least one roller which is at least partially provided with an outer profile, such that the treated surface of the longitudinal profile is under residual compressive stress and that is below the treated surface lying zones of the longitudinal profile are set under internal tensile stresses in the axial and tangential direction, the longitudinal profile placed under residual compressive stress is then at least partially provided with a profile without cutting by at least one further roller and finally an at least partially profiled section of the longitudinal profile to form a profiled workpiece is separated from the longitudinal profile, a particularly simple method can be obtained to workpieces with a round surface, ie with a convex surface, such as round profiles, and / or with a concave Surface, such as hollow profiles, and / or bores and other recesses, for example through holes and blind holes, not least due to a purely chipless processing without great effort and cost.
- the longitudinal profiles and / or workpieces formed therefrom are given a particularly high strength and / or hardness, as well as an extremely high accuracy and smoothness.
- the longitudinal profiles treated by the method according to the invention and / or workpieces formed therefrom are largely gas-impermeable or gas-tight.
- the Longitudinal profiles and / or workpieces are therefore outstandingly suitable for further processing to, for example, high-strength and gas-tight, hydraulic elements, such as (lockable) gas and / or liquid springs, etc.
- the surface of the material and / or the surface is further cleaned Edge zone of brittle oxide crusts, for example aluminum oxide crusts, and harmful impurities reached and surface defects and cracks eliminated.
- a separate processing of the material surface is not necessary.
- the workpieces are surrounded by a material-identical shell of several hundred micrometers, which has a stiffening effect due to increased material strength and the resulting residual pressure.
- the surface roughness improves compared to the workpieces immediately after drawing or extrusion up to about a factor of 6 to 8.
- Roughness values of R a ⁇ 0.1 are the rule.
- the workpieces therefore have an inherent stress characteristic, namely residual stresses in the plastically deformed surface or near-surface marginal zone and tensile residual stresses in the areas below which counteract each other.
- the workpieces made from the longitudinal profile thus have a significantly improved fatigue strength.
- An additional advantage of the method according to the invention results in improved adhesion as a result of a significantly reduced oxide layer thickness, with the result that the workpieces can be provided with galvanic coatings without any problems, and without the usual hydrogen embrittlement. Because of the improved adhesion, however, all conceivable corrosion protection methods are also possible.
- welding of longitudinal profiles and / or workpieces produced by the method according to the invention to or with one another is also readily possible.
- the resilience or durability of such weld seams corresponds to that of weld seams of conventionally produced longitudinal profiles and / or workpieces.
- the longitudinal profile is acted upon in succession in the opposite direction in a special embodiment of the invention according to claim 3 by at least one, in particular two, each at least partially provided with an outer profile.
- the surface of the longitudinal profile to be treated is preferably deformed transversely to the direction of movement of the longitudinal profile first in one direction and then in the opposite direction.
- the longitudinal profile is made gastight in this way.
- the annular beads and recesses of the roller arranged at an angle ⁇ , ⁇ ' having an essentially opposite leading position to each other.
- the longitudinal profile according to claim 8 is acted upon by two rollers, each of which is at least partially provided with an outer profile, and an essentially unprofiled roller which are arranged around the longitudinal profile, in particular at approximately the same distance from one another.
- the longitudinal profile or the (upper) surface of the longitudinal profile to be treated is preferably machined according to claim 9 by two rollers with an outer profile in the form of annular beads and recesses arranged at an angle ⁇ or 'to the longitudinal axes of the rollers.
- the two rollers are claimed 10 preferably driven in the same direction of rotation if the annular beads and recesses of the two rollers, which are arranged at an angle or .alpha. 'To the longitudinal axes of the rollers, have an essentially opposite feed position to one another.
- the rollers according to claim 11 are driven in the opposite direction of rotation if the annular beads and recesses of the two rollers, which are arranged at an angle or ⁇ 'to the longitudinal axes of the rollers, have a feed position which is essentially identical to one another.
- the longitudinal profile placed under residual stresses is at least partially provided with a profile by at least one profile roller in accordance with the measures of claim 14.
- the profile is created on the longitudinal profile without any machining.
- the longitudinal profile set under residual stresses is provided with a pin profile by the at least one profile roller.
- the longitudinal profile placed under residual stresses is at least partially provided with a thread by at least one grooved roller.
- the pin profile formed by the at least one profile roller of the longitudinal profile placed under residual stresses additionally, i.e. cumulative, by means of which at least one grooved roller is provided with a thread.
- the longitudinal profile can advantageously be cut to length or sheared to a shortened longitudinal profile.
- the separated section of the longitudinal profile and / or the shortened longitudinal profile is surface-treated in the area of separation or shearing.
- an elongated profile such as a wire
- an aluminum core with a (closed or continuous) copper sheath.
- the copper coating remains extremely durable and particularly abrasion-resistant to the aluminum core. It is no longer necessary to use copper wires made of solid material. In addition to a reduction in weight, it is above all possible to achieve considerable cost savings.
- Highly resilient hard chrome coatings or the like are also possible with the method according to the invention, without the need for expensive preparatory work. For example, complex and time-consuming peeling of near-surface oxide layers and / or contaminants before chrome plating of longitudinal profiles and / or workpieces, such as brass shafts or the like, as previously required, can be completely dispensed with.
- An abrasion-resistant application of, for example, anodized paints or anodizing or galvanizing of workpieces is equally possible.
- the longitudinal profiles and / or workpieces and / or their coatings placed under residual stresses can, in a particularly advantageous manner, consist of aluminum and / or (an) alloy (s), depending on the material properties or specifications to be achieved in each case.
- aluminum and / or aluminum-containing alloys for example AlMgSig 5, AlMgSi, AlMgs, AICuMg, AlCuMg2, AlZnMgCuQ, 5, AlZnMgCui 5, AICuMgPb.
- the device according to the invention comprises a device for the continuous production of workpieces from an unprofiled longitudinal profile with a round, for example convex and / or concave, surface, a device for generating residual stresses in the unprofiled longitudinal profile with three rollers arranged in parallel and around the longitudinal profile, which are at least partially provided with an external profile acting on the longitudinal profile in the form of annular beads and recesses arranged at an angle to the longitudinal axis of the roller and each rotatable individually about their longitudinal axes and together about the longitudinal profile, a device for the non-cutting formation of a profile on the bottom Internal stresses set longitudinal profile with at least one further roller and a device for separating a section of the longitudinal profile provided with a profile to form a profiled workpiece from the longitudinal profile.
- the device according to the invention is thus distinguished by a particularly simple and compact construction overall.
- the device according to the invention also ensures extremely high manufacturing accuracy in the production of workpieces with particularly high strength and hardness and great accuracy.
- the workpieces produced with the device according to the invention are absolutely gas-tight.
- the device according to the invention enables a substantial reduction in the work and cost involved in the continuous production of such workpieces with a round surface. In terms of device technology, this object is also achieved in a surprisingly simple way by the features of claim 22.
- a device for the continuous production of workpieces from an unprofiled longitudinal profile with at least one bore or similar recess also has a device for generating residual stresses in the non-profiled longitudinal profile, a device for non-cutting formation of a profile on the longitudinal profile placed under residual stress with at least one further roller and means for separating a profiled portion of the longitudinal profile to form a profiled workpiece from the longitudinal profile.
- the advantages that can be achieved with such a device are essentially one hundred percent of the aforementioned advantages in connection with the embodiment of a device for producing workpieces with a round surface, such as a simple construction, a production of workpieces with particularly high strength and hardness Gas tightness as well as great accuracy, low labor and cost, etc., identical.
- the device for generating residual stress has at least one roller, in particular two, rollers with an external profile acting on the longitudinal profile, while the other rollers, in particular one roller, are not profiled / is.
- the longitudinal profile is advantageously acted upon by the External profile of the at least one, in particular two, rollers in succession in the opposite direction, that is to say a double deformation essentially approximately transversely or also obliquely to the direction of movement of the longitudinal profile.
- the device for generating residual stress is followed by a device for compacting the surface of the longitudinal profile set under residual stress.
- a device for compacting the surface of the longitudinal profile set under residual stress With such a device, the surface of the longitudinal profile, which is already (largely) gas-tight due to the generation of residual stress, can be given a completely gas-impermeable outer surface.
- the device for the non-cutting formation of a profile on the longitudinal profile placed under residual stress according to claim 29 comprises at least one profile roller and / or according to claim 30 has at least one grooved roller for forming a thread.
- a cutting device for cutting or shearing the longitudinal profile is expediently provided according to claim 31.
- workpieces made of aluminum and / or aluminum-containing alloys such as AlMg4 5Mn, AlMgSin 5 AlMgSi, AlMg 5 , AlZn ⁇ Mg, AICuMg, AlCuMg2, AlZnMgCu 0 , 5, AlZnMgCu ⁇ 5, AICuMgPb.
- Workpieces made of, for example, aluminum or an alloy (s) containing aluminum have recently been found to be particularly suitable on account of the various advantageous properties, such as corrosion resistance, low specific density, etc. Especially in the field of power These materials are used more and more in vehicle construction.
- profiled, in particular hardened and / or coated, workpieces with a round surface made of solid material, in particular rods, piston rods, axles, shafts, crankshafts, camshafts or other elongate components, with or without pins and / or ' with or without Threaded sections are manufactured.
- the method and the device according to the invention are expediently particularly suitable for producing, in particular gas-tight, hydraulic spring or damping elements, preferably (lockable) gas and / or liquid springs, preferably made of aluminum and / or Alloys containing aluminum.
- the method and the device according to the invention according to claim 35 for the continuous production of profiled, in particular hardened and / or coated, workpieces with bores or similar recesses, in particular through bores and / or blind bores, made of tubular material, in particular tubes, can be used Find.
- the material aluminum or aluminum-containing alloys are revealed by the method and / or the device according to the invention on account of a considerably increased strength and hardness, a hundred percent gas-tightness, an improved fatigue strength, only a small tolerance size and high smoothness and one improved adhesion for galvanic coatings or other corrosion and oxidation-preventing materials previously unavailable applications. This at the same time further improves the versatility of the material aluminum or the alloy (s) containing aluminum and the advantages which have been known for a long time.
- FIG. 1 shows a schematic representation of an embodiment of a device designed according to the invention for the continuous production of workpieces from an unprofiled longitudinal profile
- FIG. 2A and 2B are a schematic cross-sectional view through an embodiment of a device according to the invention for generating residual stress in a longitudinal profile of a device according to FIG. 1 and a schematic plan view of three rollers of the device according to the invention corresponding to FIG. 2A, each in an enlarged view,
- 3A, 3B and 3C are schematic side views of the embodiments of the three rollers of the device according to the invention for generating residual stress according to FIGS. 2A and 2B, each in an enlarged view,
- 4A and 4B show a partially schematic cross-sectional view through a further embodiment of a device according to the invention for generating residual stress of a device according to FIG. 1 and a schematic top view of three rollers of the device according to the invention. 4A, each in an enlarged view,
- 5A and 5B is a schematic cross-sectional view through another embodiment of a device according to the invention for generating residual stress of a device according to FIG. 1 and a schematic plan view of three rollers of the device according to the invention according to FIG. 5A, each in an enlarged view,
- FIG. 6 shows a schematic cross-sectional view through an embodiment of a device designed according to the invention for compressing a longitudinal profile of a device according to FIG. 1,
- FIG. 7 shows a schematic cross-sectional view through an embodiment of a device designed according to the invention for the non-cutting formation of a profile on a longitudinal profile of a device according to FIG. 1,
- FIGS. 8 shows a schematic cross-sectional view through another embodiment of a device designed according to the invention for the non-cutting formation of a profile on a longitudinal profile of a device according to FIGS. 1, and
- 9A to 9E are schematic representations of an embodiment of a possible process sequence for the continuous production of workpieces from a longitudinal profile by means of a device according to the invention.
- a device 10 for the continuous production of workpieces 12, 12 'from a Nem longitudinal profile 14 with a round surface 16, for example with a round cross-section in the form of a round material, and workpieces 12 '' from a longitudinal profile 14 'with at least one bore 16' or similar recess, such as a through hole and / or a blind hole
- identical components are each provided with identical reference numbers.
- a longitudinal profile 14 with a round surface 16 can equally be a longitudinal profile with a convex surface, such as an outer surface of solid material, and / or a longitudinal profile with a concave surface, such as an inner surface of solid material, and / or a combination act from it, such as an outer and inner surface of a hollow profile.
- a longitudinal profile 14 'with a bore 16' or the like recess may under certain circumstances be equivalent to a longitudinal profile 14 with a round, i.e. concave, surface 16 in the form of tube material or other hollow profile.
- FIG. 1 schematically shows an embodiment of a device 10 according to the invention for the continuous production of workpieces 12, 12 ', 12' 'from an unprofiled longitudinal profile 14, 14' with a round surface 16 or bore 16 'or similar recess.
- the unprofiled longitudinal profile 14, 14 ' is first means 18 ⁇ for generating internal stresses in the longitudinal profile 14, 14', respectively.
- the longitudinal profile is given increased strength on the one hand by the residual stress generating device and on the other hand it becomes gas-tight.
- the residual stress generating device 18 comprises three rollers 20, 20 ', 20'', which are arranged parallel to and around the unprofiled longitudinal profile 14 at approximately the same distance, ie offset by 120 ° from one another.
- the three rollers 20, 20 ', 20''each have the same diameter in the embodiment of the device 18 shown in FIGS. 2 to 5B.
- rollers 20, 20 ', 20' ' are at least partially provided with an outer profile 24, 24' which acts on the surface 16 of the longitudinal profile 14.
- the rollers 20 and 20 ' are provided with such an outer profile 24, 24'.
- the roller 20 ′′ is not profiled. In principle, however, it is also possible to equip only one roller with an outer profile of this type which acts on the surface 16 of the longitudinal profile 14 instead of two rollers 20, 20 '(cf. FIGS. 4A, 4B).
- rollers 20, 20 ', 20' ' arranged in parallel and around the non-profiled longitudinal profile 14, 14' at approximately the same distance from one another with such an external profile (not the surface 16 of the longitudinal profile 14, 14 ' shown).
- the outer profile 24, 24 'of the two rollers 20, 20' acting on the surface 16 of the longitudinal profile 14 is designed in the form of annular beads 26 and recesses 28 arranged between them, which extend to the longitudinal axis 22, 22 'of the respective roller .20, 20''are arranged at an angle ⁇ .
- the beads 26 and recesses 28 of the two rollers 20, 20 'therefore run obliquely in the longitudinal direction of the rollers 20, 20'.
- the annular beads 26 protrude beyond the outer diameter of the rollers 20, 20 '.
- the two rollers 20, 20 ' are at least partially provided with an outer profile 24, 24' which sequentially acts on the surface 16 of the longitudinal profile 14, 14 'in the opposite direction, ie the surface 16 of the longitudinal profile 14 initially in one direction and then deformed in the opposite direction.
- the beads 26 and recesses 28 of the outer profile 24, 24 'of the two rolls 20, 20' are reversed for this purpose, i.e. arranged approximately crosswise.
- the angle ⁇ of the outer profile 24 of the roller 20 is identical in terms of amount to the angle 'of the outer profile 24' of the roller 20 ', the angles ⁇ and ⁇ ' differ accordingly in their sign, and are therefore once positive and once negative, or vice versa .
- angles ⁇ , ⁇ 'of the slope of the annular beads 26 and recesses 28 differ from one another in terms of amount, for example that the angle ⁇ is 30 ° and the angle ⁇ ' is 45 °. Any other combination can also be provided.
- the beads 26 or recesses 28 are formed on the roller 20 from right to left and on the roller 20 'from left to right.
- the two rollers 20, 20 ' can therefore be driven in the same direction of rotation.
- the forward position of the beads 26 and recesses 28 is essentially the same, the two rollers 20, 20 ′′ adjacent to one another can then be driven in the opposite direction of rotation (not shown).
- the longitudinal profile 14, 14 ' is moved in the embodiment of the device 18 according to the invention according to FIG. 2B in the direction of arrow 30 by the rollers 20, 20', 20 '' from right to left.
- the rollers 20, 20 ' have two ends 32, 34, which, as is clear from FIGS. 2B, 3A and 3B, limit the respective outer profile 24, 24'.
- the upstream end 32 and downstream end 34 of the rollers 20, 20 'in the direction of movement of the longitudinal profile 14, 14' according to arrow 30 are non-profiled or smooth.
- the upstream end 32 of the roller 20, 20 ' has a slightly smaller outer diameter in order to compensate for any irregularities in the longitudinal profile 14, 14' to be supplied to the outer profile 24, 24 'or to perform a certain directional function beforehand.
- the downstream end 34 of the rollers 20, 20 ' has a slightly larger diameter in order to keep the longitudinal profile 14, 14' coming from the area of the outer profile 24, 24 'to a constant dimension, namely the actual or desired target dimension the longitudinal profile 14, 14 'to bring with a very smooth surface or a small tolerance.
- the roller 20 ′′ is continuously provided with a smooth surface in accordance with FIG. 3C.
- the rollers 20, 20 ′, 20 ′′ are furthermore each individually rotatable about their longitudinal axes 22, 22 ′, 22 ′′, as is shown in particular in FIG. 2A.
- the two rollers 20, 20 'with opposite outer profile 24, 24' are each driven in the same direction of rotation, the roller 20 '' with an exclusively smooth surface in the opposite direction of rotation.
- the direction of rotation of the roller 20 '' with only smoother can be chosen freely.
- the rollers 20, 20 ', 20' ' are received by a drive device and a drive head or the like drive arrangement (not shown).
- the drive device is provided for rotating the rollers 20, 20 ', 20' 'individually about their longitudinal axes 22, 22', 22 ''.
- the drive head serves to rotate the rollers 20, 20 ', 20 "together around the longitudinal profile 14, 14'.
- the upstream end 32 of the rollers 20, 20 ', 20' ' is rotatably received by the hydraulic drive device in accordance with FIGS. 3A to 3C with a profile 36, for example a square profile, in a correspondingly shaped, essentially precisely fitting recess (not shown) ,
- the downstream end 34 of the rollers 20, 20 ', 20' ' is rotatably received in each case via a pin 38 in recesses (also not shown) of the drive head.
- the drive device and / or the drive head of the three rollers 20, 20 ', 20' ' can be controlled hydraulically or pneumatically in the embodiment of the residual voltage generating device 18 according to the invention.
- Such a drive of the three rollers 20, 20 ', 20' ' enables a stepless control in order to avoid any slippage and thus to obtain a constantly smooth surface 16 of the longitudinal profile 14, 14' during its treatment.
- the drive device comprises a total of three separate, preferably hydraulically operated, drive motors, each of which is assigned to one of the rollers 20, 20 ', 20' 'at the end. However, it is also possible to drive only the two profiled rollers 20, 20 'by means of such a drive motor.
- the drive head or similar drive arrangement is in, for example, a worm drive (not shown) Operative engagement.
- the worm drive and thus the drive head are also hydraulically or pneumatically driven by a drive motor.
- a drive motor about the speed of the worm drive, which is equally the speed of rotation of the drive head and thus the joint rotary movement of the.
- Rollers 20, 20 ', 20''to the longitudinal profile 14, 14' purports is likewise the feeding of the longitudinal profile '14, 14' voltage generating means 18 determined by the properties of the invention.
- the longitudinal profile 14, 14 ' is subjected to a longitudinal movement without any rotational movement.
- the device 18 can be used in a very versatile manner. It is thus possible to use rollers 20, 20 ', 20''with different lengths, with different diameters and with different outer profiles 24, 24', ie to be used individually by arranging the beads 26 and recesses 28 with different slopes, in different numbers of beads 26 and recesses 28, with different spacing etc., depending on the dimensions, material properties etc. of the respective longitudinal profile 14, 14 '.
- the rollers 20, 20 ', 20' ' are designed in several parts.
- the rollers 20, 20 ′, 20 ′′ each comprise a shaft 40 with a stop 42 provided in the region of the profile 36.
- the shaft 40 takes a sleeve 44 either with the outer profile 24, 24 ′, the upstream end 32 and the outflow side End 34 or with an overall smooth surface.
- the sleeve 44 is attached to the shaft 40 in a rotationally secured manner via a slot wedge 46. In the axial direction, the sleeve 44 is secured on the shaft 40 by the stop 42, a ring 48 and a nut 50.
- Such a multipart structure Due to such a multi-part structure, it is possible to easily replace the sleeve 44 without effort if the outer profile 24, 24 'of the rollers 20, 20', 20 '' is worn or defective.
- Such a multipart structure also has the advantage that the shaft 40 and the sleeve 44 can be subjected to different production methods, so that ultimately the shaft 40 has high toughness and the sleeve 44 with the outer profile 24, 24 'of the rollers 20, 20', 20 '' have great hardness and therefore high wear resistance.
- roller 20 ''' at least partially with an outer profile 24, 24' provided that the surface 16 of the longitudinal profile 14, 14 'successively acted on in the opposite direction, ie the surface 16 of the longitudinal profile 14, 14 'is first deformed in one direction and then in the opposite direction.
- the beads 26 and recesses 28 of the outer profile 24, 24 'of the roller 20''' are reversed from one another for this purpose, that is to say arranged approximately crosswise. Accordingly, although the angle ⁇ of the outer profile 24 is identical in terms of amount to the angle 'of the outer profile 24' of the roller 20 ''', the angles ⁇ and ⁇ ' differ in their signs.
- the roller 20 ''' rotates about its axis 22'''.
- the two rollers 20 ′′ are not profiled.
- the embodiment of the residual stress generating device 18 according to the invention according to FIGS. 5A and 5B still differs from the embodiment according to FIGS. 2A to 3C in that the rollers 20, 20 ', 20' 'for surface treatment of a surface or inner wall of a bore 16 'or the like recess, for example a through hole and / or blind hole, such as the cylinder bores, are used in an engine block of a motor vehicle of the longitudinal profile 14'.
- roller 20 '' 'according to FIGS. 4A, 4B with an outer profile 24 and / or 24' and / or further profiled rollers 20, 20 'according to FIGS. 2A to 3C for the purpose of generating residual stress of the longitudinal profile 14 'or of the inner wall of a bore 16' (not shown).
- rollers 20, 20 ', 20' ' which are each carried, for example, by a shaft 52, 52', 52 '' or the like (shown in a hint), are also all supported on the inner wall of the bore 16 'of the longitudinal profile 14' , This is all the more advantageous since the rollers 20, 20 ', 20' 'are supported in a self-supporting manner when a blind bore is generated, in particular.
- roller 20 ''' it is alternatively possible to use only one roller 20 '''.
- at least two rollers 20, 20 ', 20'',20''' should be used, at least one of which is then profiled.
- These two rollers should be arranged opposite one another, the two outer diameters of which could roll on the inner diameter of the bore 16 'in order to additionally achieve a support function in the generation of residual stress.
- the high manufacturing accuracy of the longitudinal profile 14 'after the residual stress generation can be further improved.
- the device 18 for generating residual stress in the longitudinal profile 14, 14 ' is optionally followed by a reel 54, onto which the longitudinal profile 14, 14' is wound after generating the residual stress in the device 18 according to the invention, optionally for transport to another location can be.
- a device 56 for compressing the surface 16, 16' of the longitudinal profile 14, 14 ' is arranged.
- the surface 16, 16 'of the longitudinal profile 14, 14' placed under residual stresses can additionally be compressed to a surface depth of approximately 500 ⁇ m, in particular approximately 1 to 20 ⁇ m and preferably approximately 1 ⁇ m.
- the device 56 for compacting the surface 16, 16 'of the longitudinal profile 14' comprises at least one, but preferably a plurality of compacting rollers 58, 58 'arranged around the longitudinal profile 14', which is designed as a hollow profile.
- the compaction rollers 58, 58 ' act on the outer, convex surface 16 of the longitudinal profile 14' in order to compress it and thereby make it partially or completely gas-impermeable or gas-tight.
- a rolling head 60 known per se is provided, which is rotatably arranged on an axis of rotation 62 or the like.
- the rolling head 60 is provided with rotating bodies 64, for example with needles, in order to support the rotating movement on or on the inner, concave surface 16 ′ of the rolling head 60.
- the compacting device 56 is assigned a cutting device 66.
- the cutting device 66 divides the longitudinal profile 14, 14 'into simpler further work processes into smaller units. Such cutting to length can, of course, also take place anywhere else. Therefore, the cutting device 66 could easily be arranged, for example, in front of the internal stress generating device 18 or after the reel 54, etc. However, it is also conceivable to integrate several such cutting devices 66 in the device 10 according to the invention.
- the cutting device 66 in the embodiment of the device 10 according to the invention shown in FIG. 1 is in turn followed by a device 68 for the non-cutting formation of a profile on the longitudinal profile 14, 14 ′ which is set under internal stresses and subsequently compressed on the surface in the present embodiment.
- the device 68 for chip-free sen formation of a profile at least one profile roller 70 As FIG. 7 shows, the device 68 for chip-free sen formation of a profile at least one profile roller 70.
- two opposing profile rollers 70 are provided, which press the longitudinal profile 14, which is here in the form of solid material, in the opposite direction with pressure.
- the profile rollers 70 form a profile on the longitudinal profile 14, which is moved in the direction of arrow 72 by the device 10.
- the longitudinal profile 14 is provided with a pin profile 74 and a plurality of annular beads 76 and recesses 78 in the illustrated embodiment.
- the device 68 for the non-cutting formation of a profile on the longitudinal profile 14 set under residual stresses according to FIG. 7 additionally has at least one grooved roller 80 for forming a thread 81.
- at least two opposing grooved rollers 80 are provided, which are mutually supported. Any thread 81 can be cut into the longitudinal profile 14 via the two or more grooved rollers 80.
- the projecting pin 74 is equipped with a thread 81.
- a further cutting device 82 is arranged downstream of the device 68 for the non-cutting formation of a profile when executing the device 10 according to the invention according to FIG. 1, around the work piece 12, 12 ', 12''formed from the longitudinal profile 14, 14' cut to length or ultimately separate from adjacent workpieces 12.
- the workpiece 12 is designed as a so-called bottom piece. educated .
- cut-to-length or separated workpieces 12, 12 ', 12' 'or separated sections of the longitudinal profile 14, 14' are finally surface-treated in a device 84 for surface treatment in the region of their separation, for example deburred and ground, polished, buffed or otherwise smoothed.
- the longitudinal profile 14, 14 ' can be shaped in any way by the one or more profile rollers 70 (not shown).
- a flange 86 is formed on the leading end 88 of a longitudinal profile 14 ′, which is designed as a hollow profile or tube or possibly also has a bore or the like, by profile rollers 70.
- the longitudinal profile 14 ' is thus formed into a workpiece 12', for example an end pipe or the like.
- FIGS. 9A to 9E show yet another shape of the longitudinal profile 14, which in turn is available as a solid material.
- a section of a longitudinal profile 14 according to FIG. 9A which has been subjected to a shortening in the cutting device 66, is rolled down in the middle by profile rollers 70 to a diameter which is substantially smaller than the diameter of the outer surface 16. Then the two are turned away from each other
- the ends of the shortened longitudinal profile 14 are shaped according to FIG. 9C by means of further profile rollers 70 pins 74.
- the pins 74 are then each provided with a thread 81 via grooved rollers 80, which is indicated in FIG. 9D.
- the profiled longitudinal profile 14 is then separated in the central section, whereby two individual, corresponding workpieces 12 ′′, for example piston rods or the like, are formed.
- FIG. 1 illustrates a process flow in which a continuous production of workpieces 12, 12 ', 12''is integrated according to the method and the associated device according to the invention.
- the method and the device 10 according to the invention are particularly well suited for the mass production of workpieces which are formed from non-profiled, elongated profiles, such as, for example, headrest brackets in motor vehicles or the like, which preferably consist of alloys containing aluminum or aluminum.
- headrests manufactured in this way are distinguished on the one hand by an extremely high level of strength, but on the other hand also have a certain deformability, so that head injuries of the vehicle occupants previously recorded can be avoided precisely in the event of head-on collisions.
- the method and / or the device 10 are used in a particularly suitable manner to produce profiled, in particular hardened and / or coated, high-strength and / or gas-tight workpieces 12, 12 ′′ with a round surface 16 made of solid material, preferably rods, piston rods, axles , Shafts, crankshafts, camshafts or other elongated components, with or without pins and / or with • or without threaded sections etc., continuously.
- the method and / or the device 10 according to the invention thus allow continuous production of, in particular high-strength and / or gas-tight, hydraulic spring or damping elements.
- ducks preferably of (lockable) gas and / or liquid springs, preferably made of aluminum and / or aluminum-containing alloys.
- a wide variety of components can be obtained easily and without any design effort and assembled to form a construction unit or even welded to one another.
- the workpiece 12 in the form of a gas-impermeable base piece can be inserted into the workpiece 12 'in the form of a tube with a flange 86, which is explained in connection with FIG. 8.
- the weld seam 90 runs in the area of the flange 86.
- the structural unit formed in this way can be used, for example, as an inner tube of a gas spring or a similar hydraulic spring element.
- the workpiece 12 ′ ′′ which is shown in more detail in FIGS. 9A to 9E, can finally also be introduced as a piston rod into a gas spring or the like hydraulic spring element and mounted gas-tight therein.
- the workpiece to be treated to be made of any material or material made of metal or a metal alloy available on the market, in particular of base metals such as lead, chromium, iron, cobalt, nickel, copper, manganese, molybdenum, silicon , Tungsten, tin, zinc, or alloys thereof, such as brass, steel, or of noble metals, such as gold, palladium, platinum, silver, or alloys thereof, or combinations thereof.
- base metals such as lead, chromium, iron, cobalt, nickel, copper, manganese, molybdenum, silicon , Tungsten, tin, zinc, or alloys thereof, such as brass, steel, or of noble metals, such as gold, palladium, platinum, silver, or alloys thereof, or combinations thereof.
- noble metals such as gold, palladium, platinum, silver, or alloys thereof, or combinations thereof.
- any coatings to be provided for the workpiece that has already been treated, or a surface or bore, etc. thereof which are
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Milling Processes (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Multi-Process Working Machines And Systems (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10059021 | 2000-11-28 | ||
DE10059021A DE10059021C2 (de) | 2000-11-28 | 2000-11-28 | Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Werkstücken aus einem unprofilierten Längsprofil sowie deren Verwendung |
PCT/EP2001/013899 WO2002043896A1 (de) | 2000-11-28 | 2001-11-28 | Verfahren und vorrichtung zur kontinuierlichen herstellung von werkstücken aus einem unprofilierten längsprofil sowie deren verwendung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1339511A1 true EP1339511A1 (de) | 2003-09-03 |
EP1339511B1 EP1339511B1 (de) | 2004-11-17 |
Family
ID=7664957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01989532A Expired - Lifetime EP1339511B1 (de) | 2000-11-28 | 2001-11-28 | Verfahren und vorrichtung zur kontinuierlichen herstellung von werkstücken aus einem unprofilierten längsprofil sowie deren verwendung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1339511B1 (de) |
AT (1) | ATE282491T1 (de) |
AU (1) | AU2002227956A1 (de) |
DE (2) | DE10059021C2 (de) |
WO (1) | WO2002043896A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108214240A (zh) * | 2018-01-20 | 2018-06-29 | 东莞坤胜五金制品有限公司 | 一种冲床自动化生产流水线 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006031564A1 (de) | 2006-07-07 | 2008-01-10 | Gesenkschmiede Schneider Gmbh | Verfahren zur Herstellung eines rotationssymmetrischen Teils, insbesondere Welle |
CN102753281B (zh) | 2010-02-12 | 2015-08-05 | 喜利得股份公司 | 形成锚固器的方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2060087A (en) * | 1934-06-02 | 1936-11-10 | Timken Roller Bearing Co | Mill for rolling articles of circular section and irregular profile |
DE1111660B (de) * | 1953-06-11 | 1961-07-27 | Dr Tadeusz W Wlodek | Verfahren und Vorrichtung zum Aufbau eines dem Belastungs-spannungszustand entgegengerichteten inneren Eigenspannungszustandes in hochbeanspruchten Bauelementen aus Metallen durch plastische Verformung ihrer Oberflaeche |
US3656332A (en) * | 1957-06-19 | 1972-04-18 | Rotary Profile Anstalt | Metal working |
FR1367887A (fr) * | 1963-08-21 | 1964-07-24 | Smeralovy Zd Y Narodni Podnik | Dispositif pour le façonnage de pièces de révolution par laminage entre des cylindres transversaux à intervalle en coin |
FR2414375A1 (fr) * | 1979-01-12 | 1979-08-10 | Warnke Umformtech Veb K | Procede de laminage transversal de pieces decolletees a symetrie de rotation de forme allongee |
DE3110433A1 (de) * | 1981-03-18 | 1983-02-17 | DIAG-Deutsche Industrieanlagen Gesellschaft mbH Werk Fritz Werner Werkzeugmaschinen, 1000 Berlin | Verfahren und vorrichtung zum umformen von insb. metallischen werkstuecken, wie verzahnungen, wellen, zylindrischen laufflaechen u.a. |
JPH09164446A (ja) * | 1995-12-15 | 1997-06-24 | Sumitomo Metal Ind Ltd | 段付き金属材料の製造方法 |
DE19981858D2 (de) * | 1998-09-23 | 2002-01-31 | Kemper Kurt | Verfahren und Vorrichtung zur Oberflächenbehandlung von Werkstücken sowie deren Verwendung |
-
2000
- 2000-11-28 DE DE10059021A patent/DE10059021C2/de not_active Expired - Fee Related
-
2001
- 2001-11-28 AU AU2002227956A patent/AU2002227956A1/en not_active Abandoned
- 2001-11-28 DE DE50104565T patent/DE50104565D1/de not_active Expired - Fee Related
- 2001-11-28 AT AT01989532T patent/ATE282491T1/de not_active IP Right Cessation
- 2001-11-28 EP EP01989532A patent/EP1339511B1/de not_active Expired - Lifetime
- 2001-11-28 WO PCT/EP2001/013899 patent/WO2002043896A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0243896A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108214240A (zh) * | 2018-01-20 | 2018-06-29 | 东莞坤胜五金制品有限公司 | 一种冲床自动化生产流水线 |
Also Published As
Publication number | Publication date |
---|---|
ATE282491T1 (de) | 2004-12-15 |
DE10059021C2 (de) | 2002-10-24 |
WO2002043896A1 (de) | 2002-06-06 |
DE50104565D1 (de) | 2004-12-23 |
EP1339511B1 (de) | 2004-11-17 |
AU2002227956A1 (en) | 2002-06-11 |
DE10059021A1 (de) | 2002-06-27 |
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