EP3368232A1 - Innengekühltes ventil für verbrennungsmotoren sowie verfahren und vorrichtung zu dessen herstellung - Google Patents
Innengekühltes ventil für verbrennungsmotoren sowie verfahren und vorrichtung zu dessen herstellungInfo
- Publication number
- EP3368232A1 EP3368232A1 EP16736838.0A EP16736838A EP3368232A1 EP 3368232 A1 EP3368232 A1 EP 3368232A1 EP 16736838 A EP16736838 A EP 16736838A EP 3368232 A1 EP3368232 A1 EP 3368232A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- workpiece
- internally cooled
- forming
- 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
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 35
- 238000005096 rolling process Methods 0.000 claims abstract description 91
- 238000000465 moulding Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 239000002826 coolant Substances 0.000 description 15
- 230000008569 process Effects 0.000 description 9
- 239000011265 semifinished product Substances 0.000 description 9
- 238000003754 machining Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000032258 transport Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000005098 hot rolling Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- 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
- B21K1/20—Making machine elements valve parts
- B21K1/22—Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
-
- 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
-
- 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
- B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/12—Cooling of valves
- F01L3/14—Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2303/00—Manufacturing of components used in valve arrangements
- F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
Definitions
- the present invention relates to cooled valves for internal combustion engines. More particularly, the present invention relates to a sodium-cooled intake or exhaust valve for an internal combustion engine, and more particularly to its method of manufacture, and to an apparatus for manufacturing the valve by rolling.
- a method of manufacturing an internally cooled intake or exhaust valve for internal combustion engines which is based on forming a semi-finished product or semi-finished product instead of known metal-cutting processes.
- the method includes providing a workpiece that includes a shaft and a cylindrical hole that extends axially from a valve stem end.
- the valve stem end of the workpiece later forms the part which is located at the valve stem end of the finished valve.
- the valve stem end is formed by molding the shaft to a smaller diameter deformed, wherein a diameter of the cylindrical hole is reduced, wherein the hole remains.
- the hole later forms the cavity for a coolant that can move in the cavity to transfer heat from an uncooled valve disk toward a cooled valve stem.
- the method further comprises reforming a portion of the workpiece that connects to a valve stem by forming rolls to a valve head.
- the valve head is also formed by forming rollers.
- at least the valve stem with a bore therein is rolled to a diameter of mine.
- the method can also be applied to tubular workpieces to produce the stem and the upper part of a valve disk, wherein a lower part of a valve disk can be formed by a lid which is connected to the upper part of the valve disk.
- the method is based on a basic embodiment of forming a workpiece comprising a cylindrical shaft and a cylindrical hole therein extending axially from a valve stem end.
- the valve stem end is reshaped to a smaller diameter by forming rollers of the cylindrical shaft, whereby a diameter of the cylindrical hole is reduced, but the cylindrical hole remains, but may lose its cylindrical shape because the workpiece is less deformed in the area of the valve disk than in the valve disk Area of valve stem end.
- the initially cylindrical hole later forms the cavity for a coolant.
- workpiece is used in the meanings of workpiece, semi-finished product, semi-finished product and semi-finished product in order to avoid unnecessary repetition of the corresponding terms, and not to unnecessarily prolong the text.
- semi-finished product and “semi-finished product” are used synonymously here.
- the method comprises reducing the diameter of the shank and the bore therein and forming at least the back of the valve disc by forming rollers.
- the nature of the formation of the valve disk surface is not yet considered.
- the workpiece prior to the forming roll, has a diameter at least equal to that of the valve disk of the finished valve, and the method further comprises molding a transition between the valve head and the valve stem to a groove. This will cause the back of the Valve plates made by molding rolls. It is also envisaged to produce the chamfer for the valve seat and / or the rim by forming rollers.
- the workpiece is cup-shaped.
- the cup-shaped workpiece has a diameter at a bottom of the workpiece which corresponds at least to that of the valve disk.
- the cylindrical hole is designed as a blind hole, which extends from a valve stem end in the direction of the bottom of the cup-shaped workpiece, wherein the forming rollers comprises a reshaping of the shaft and a shaping of the valve head with at least the valve disc top side.
- the chamfer of the valve seat and a valve edge to be produced by molding rolls.
- the bottom of the workpiece forms the valve disk surface and can be brought into its final shape before the form rolling.
- an outer bottom surface of the workpiece already has the shape of the valve disk. With such a workpiece, only the valve disk rear side and not the valve disk surface has to be processed by rolling.
- the workpiece is cup-shaped and has a larger diameter at a bottom than in the region of the cylindrical shaft.
- a thinner shank of the workpiece can be used, which allows easier machining by the forming rollers.
- the shaft does not have to be rolled from a valve disk diameter to the valve stem diameter, but smaller transformations may be sufficient to be able to produce the valve with cavity in the valve disk.
- the workpiece is held by guides between the rollers.
- the guides may comprise individual rollers which abut against an outer surface of the valve stem or valve disc. It is also contemplated to use guides which are in sliding contact with an outer peripheral surface of the valve or workpiece and hold the valve or workpiece centered between the rollers.
- the rollers or the sliders can be tracked to the axis of the Valve or workpiece to keep in the plane or surface, which is spanned by the two axes of the rollers.
- Another embodiment of the method for manufacturing an internally cooled valve for internal combustion engines includes hot rolling the workpiece.
- the method may also include heating the workpiece by heaters, such as induction heaters or gas burners, to allow recrystallization of the material, the workpiece, and to counteract effects of strain hardening.
- it further includes moving the workpiece axially toward the shank end during rolling.
- Another exemplary embodiment of the method of manufacturing an internally cooled valve for internal combustion engines further comprises rotating the workpiece during rolling. This does not concern a machining on a lathe, but a driving of the workpiece during the rolling process. This step may be advantageous if, due to the shaping turning, sections with different radii require a different slip between the workpiece or valve and the rollers. By driving or actively rotating the workpiece can be adjusted, which slip on which diameters or radii is formed and which radii are rolled slip-free during the form rolling.
- the rolling in this case merely serves to reach the inside diameter of the cavity within the valve stem.
- the wall thickness of the material can be chosen higher than would require the rolling process alone.
- the method is based on a basic embodiment of forming a workpiece comprising a cylindrical shaft and a cylindrical hole therein extending axially from a valve stem end.
- the valve stem end is reshaped to a smaller diameter by forming rollers of the cylindrical shaft, whereby a diameter of the cylindrical hole is reduced, whereby the hole remains but can lose its cylindrical shape, since the workpiece is in the range the valve disk is less deformed than in the region of the valve stem end.
- the initially cylindrical hole later forms the cavity for a coolant.
- the cavity for the coolant in this case has a larger diameter in the region of the valve disk, as a result of which the heat transfer from the valve disk to the coolant can be markedly improved.
- an apparatus for producing an internally cooled valve for internal combustion engines from a workpiece, semi-finished product or semi-finished product comprises a rolling mill for round transverse rolling or for oblique rolling, wherein at least two rolls have the profile of an outlet valve.
- the rollers comprise at least surfaces to form a shaft and the back of a valve disk by forming rollers.
- the device for producing an internally cooled valve thus comprises forming rollers, which can roll a valve stem and a valve disc rear side out of a workpiece.
- the rolling mill is designed to process a hollow workpiece and thus to produce a cavity in an internally cooled valve.
- the rolling mill is intended to reshape a substantially cylindrical hole or blind hole such that the largest possible cavity of an internally cooled inlet or outlet valve can be achieved.
- the device comprises only rollers, wherein additional guide rollers can be provided to guide the workpiece between the rollers. Due to the large diameter difference between the valve stem and the valve disc diameter, it is not possible to roll the valve with a rolling device comprising three cooperating rollers.
- the apparatus for manufacturing an internally cooled valve it further includes a mandrel that can be inserted into a hole of a workpiece to guide the workpiece during rolling.
- the mandrel can serve as a guide and on the other hand can serve as a gauge to indicate when an inner diameter of a rolled workpiece has reached a predetermined diameter.
- the latter further comprises at least one guide for holding and guiding the workpiece between the rollers, wherein the at least one guide comprises a sliding element and / or one or more rollers which engage abut an outer surface of the workpiece.
- the at least one guide comprises a plurality of rollers, at least one sliding element each resting on an outer surface of the workpiece, and / or a mandrel extending into the bore of the workpiece.
- the workpiece can be given a defined inner diameter in the region of the shaft.
- a possibly lubricated or release-provided mandrel can also be used to achieve a reduction in the thickness of the wall thickness of the valve stem under an extension of the valve stem.
- a polished mandrel can be pulled out of the cavity after rolling.
- the mandrel may also be tapered to facilitate extraction of the mandrel.
- the at least one guide comprises a sliding element or one or more rollers, which abut against an outer surface of the workpiece.
- the slider may be lubricated from the outside to reduce friction and wear of the slider.
- the plurality of rollers of the contour of the valve may be adapted to exert a uniform pressure on the workpiece during rolling.
- the guides can be arranged on both sides or only on one side of the workpiece.
- the individual rollers of the at least one guide can also be arranged to be displaceable in the axial direction in order to avoid rolling in of the rollers in the shaft.
- the sliding element may have a contour that corresponds to the negative of the contour of the valve, in order to allow the most uniform possible transmission of force to the workpiece.
- the apparatus for manufacturing an internally cooled valve includes at least one force transducer, at least one guide, and individually driven rollers and a controller that controls the speed of the rollers to minimize the force on the guides.
- the workpiece is held by a differential control of the rollers in the middle between the two rollers, so that the load and the wear of the guides can be minimized.
- the service life of the rolling device can also be increased, since the intervals in which the guides must be replaced, can be extended.
- the at least one guide comprises a plurality of rollers, at least one sliding element which respectively rest on an outer surface of the workpiece and / or a dome extending into the bore of the workpiece.
- the axes of the rollers are skewed at an angle of 1 ° to 12 °, preferably 2 ° to 10 ° and more preferably 3 ° to 8 ° to each other.
- This embodiment relates to a skew rolling method in which the rolls are spaced from each other at a distance and not parallel. Depending on the rolling direction and the position of the distance of the rollers, a workpiece during rolling can be conveyed in the axial direction. This effect is particularly pronounced when the (least) distance between the axes of the rolls is near one end of the rolls. In this configuration, it has not yet been defined how the axis of the workpiece is aligned.
- the workpiece is rolled adjacent to one roll while the other roll is in contact with only a portion of the surface of the workpiece or has a surface which allows the entire surface to be simultaneously rolled.
- the axis of the workpiece and the axes of the rollers are skewed at an angle of 0.5 ° to 6 °, preferably 1 ° to 5 ° and more preferably 1, 5 ° to 4 °, arranged to each other.
- the rolling device is a so-called skew rolling device.
- the roll axes are crossed or skewed relative to one another. This creates a longitudinal feed in the rotating about its longitudinal axis workpiece.
- the workpiece is held in the nip by support rulers or guide rollers.
- the roll caliber can be designed so that the roll gap narrows.
- Oblique rolls can also be carried out with correspondingly shaped rolls, so that a total of a nip is formed with a constant spacing.
- the roll gap ideally has the contour of an intake or exhaust valve.
- at least one of the rollers, preferably both rollers has a hyperboloidal or rotationally hyperbolic outer surface.
- hyperboloidal or rotational hyperbolic outer surface refers here, for lack of a more appropriate name, a hyperboloidal shape, which is not formed from straight lines or lines, but from the profile lines of an inlet or outlet valve, in particular the shaft and the back of the valve disk.
- hyperboloid here refers to a single-shell hyperboloid having the known waisted shape and cut perpendicular to the rotational symmetry axis forms circles.
- the degree of skewness of the shapes that produce the hyperboloid of revolution is intended to correspond exactly to the respective pitch of the axes of the workpiece and the roller, since under these conditions (in the case of straight producing the hyperboloid) a cylindrical workpiece can be rolled. If the hyperboloidal roller with the profiles of a valve stem / plate is produced, resulting in waisted rollers which can produce a valve with a straight valve stem during oblique rolling. This design requires the largest cost of the means of production, but currently gives the best results.
- the device further comprises an axial guide or a chuck to guide or hold the workpiece from the plate side.
- the axial guide With the axial guide, the workpiece can be pressed in the axial direction against the rollers so as to be able to form the flutes of the rear side of the valve disk.
- the axial guide only prevents the workpiece from moving axially out of the rollers during rolling in the direction of the valve disk. If a chuck is used, the workpiece must still have a shoulder on which the chuck can grip the workpiece. The axial guidance provides increased process reliability when forming the valve plate back.
- the apparatus further includes an actuator that can axially move the workpiece from the bottom toward the valve stem end.
- This actuator can act directly on the above-mentioned axial guide or the chuck.
- the valve stem can be slowly rolled from the valve stem end towards the valve plate, which can significantly reduce the load on the rollers. It is also possible to more closely monitor and execute the process of forming the valve disk backside.
- the apparatus further includes a drive that rotates the workpiece during rolling at a particular and possibly variable speed. Due to the large difference in diameter between the valve stem and the valve disc, strong torsional forces occur during rolling, which can destroy the workpiece during forming.
- the mill may also be provided with lubrication to minimize wear of the rollers in slipped sections.
- the apparatus further includes a heating element to heat the workpiece during rolling.
- a heating element to heat the workpiece during rolling.
- the invention relates to a method in which, starting from a tubular or cup-shaped workpiece, a hollow valve head piece and a hollow valve stem are produced by hot rolling.
- the valve produced if it is assumed that a cup-shaped workpiece, can be produced without a joint.
- the valve produced may have an enlarged cavity in the region of the valve disk to accommodate an increased volume of sodium in the valve as a coolant.
- a special feature comprises the forming by two rollers and a guide, wherein at least one roller is arranged at an angle relative to the workpiece axis and the second axis.
- the rollers also have on the, the workpiece axis facing end side, each a negative mold or flute geometry of the valve head blank.
- Both rolls can move toward each other during forming, whereby one roll can also be rigidly held in position and only the other roll (and the work piece) can be moved.
- the workpiece can rest during the forming on a base or a guide and is pressed by the movement of the rollers against the guide and thereby rotated.
- the workpiece can also be moved axially against the rollers, wherein the negative mold forms on the end faces of the rollers, the groove geometry of the valve head blank.
- the position of a central axis of the workpiece can be located below the central axes of the rollers.
- the guide may, to reduce the friction on the workpiece, have storage by means of rollers.
- At least one of the rollers has a surface structure which causes a transport of the material of the workpiece in the axial direction.
- a fine thread or other rough surface structure is attached.
- the thread or rough surface structure may or should be primarily on the inclined axis.
- the rollers may be made of a metal alloy or a ceramic composite material or each include this.
- an internally cooled internal combustion engine valve that has been formed by any of the methods described above or by any of the apparatus described above.
- the valve is characterized in that the workpiece before forming comprises a shaft and also a cylindrical hole extending from a valve stem end in the axial direction. At least the shaft of the valve was thereby formed by forming rollers of the shaft to a smaller diameter, wherein the hole is retained and wherein the workpiece before molding a diameter of at least that of the later valve disc comprises and that a valve head is made with a groove by forming rollers.
- the valve is, in a basic embodiment, formed from a workpiece comprising a cylindrical shaft and a cylindrical hole therein extending axially from a valve stem end.
- the valve stem end was reshaped to a smaller diameter by forming rollers of the cylindrical shaft, whereby a diameter of the cylindrical hole is reduced, whereby the cylindrical hole remains as a hole but may lose its cylindrical shape because the workpiece is less deformed in the area of the valve disk than in the area of the valve stem end.
- the initially cylindrical hole later forms the cavity for a coolant.
- the valve is thus an internally cooled valve, and the shaft and at least the back of the valve disk, at least partially made by forming.
- valve can also be formed from a rohrform igen workpiece, wherein an opening on the valve disc can be closed later by a lid.
- the workpiece is cup-shaped, the cup-shaped workpiece having a diameter at a bottom of the workpiece at least equal to that of the valve plug, the cylindrical hole being a blind hole extending from a valve stem end toward the bottom of the valve cup-shaped workpiece runs.
- a larger cavity can be produced in the region of the valve disk than was previously possible with a one-piece valve.
- the workpiece is cup-shaped and the cup-shaped workpiece has a larger diameter at a bottom of the workpiece than in the region of the cylindrical shaft.
- the inner diameter of the blind hole should essentially determine the diameter of the cavity in the region of the valve disk. Due to the smaller diameter of the cylindrical shaft, the forming work and thus the residence time of the workpiece can be reduced in the rolling mill. Furthermore, the wall thickness of the cylindrical shaft can be increased, which in turn will have a positive effect on the forming process.
- the cylindrical hole forms a cavity that extends within the valve stem and the valve disk and that is partially filled and sealed with sodium.
- this has been made from a workpiece having a non-cylindrical shank with an outer contour and a cylindrical hole.
- the outer contour is at least partially transferred to the non-cylindrical hole after forming.
- the non-cylindrical hole has after forming an inner contour corresponding to the outer contour. This can be achieved with or without an extension of the shaft during rolling.
- the dimensions of the outer contour, the necessary to achieve a desired inner contour can be relatively easily determined by experiment.
- Figures 1A to 1D illustrate an embodiment of an apparatus according to the invention for producing an internally cooled valve, a tubular workpiece and the associated manufacturing method, is.
- FIGS. 2A to 2C show a further embodiment of a device according to the invention for producing an internally cooled valve, a cup-shaped workpiece and the associated method.
- Figures 3A to 3C illustrate another embodiment of a device according to the invention for producing an internally cooled valve, from a short cup-shaped workpiece and the associated method
- Figures 4A to 4B show an additional embodiment of an inventive device for producing an internally cooled valve, from a short cup-shaped Workpiece by cross rolling.
- FIGS. 5A and 5B illustrate a further additional embodiment of a device according to the invention for producing an internally cooled valve, from a short cup-shaped workpiece and the associated method.
- FIGS. 6A and 6B illustrate another additional embodiment of a workpiece and an internally cooled valve.
- Figure 1A shows a rolling device according to the invention with two forming rollers 42.
- the forming rollers are provided with stub axles 64, with which they can be accommodated in a housing of a rolling device.
- the forming rollers 42 can over the
- Axle stub also be driven together or individually.
- the axes are shown in a plan view, wherein the plane of the drawing extends essentially through the axes 48 of the rollers 42, or the axis 46 of the workpiece 14.
- the outer contour of the forming rollers 42 corresponds to the negative profile of an inlet or outlet valve to be rolled.
- a tubular workpiece 14 with a through hole or a through hole 28 is arranged.
- the axis 46 of the workpiece 14 and the axes 48 of the rollers 42 are each aligned in parallel.
- the rollers 42 and the workpiece 14 are shown in axial direction.
- the rolls are designed in Figure 1A and 1B for a Rundquerwalzvorgang.
- the rollers are designed as forming rollers 42.
- the respective directions of rotation of the rollers and the workpiece are indicated by the arrows 60.
- the workpiece 14 rotates here in the opposite direction to the forming rollers 42 between two forming rollers rotating in the same direction about the axis 46 of the workpiece 14.
- the workpiece 14 is reshaped.
- both rollers in the direction of movement or force application direction 62 are moved toward the workpiece 14.
- the rollers 42 it is also possible to move only one of the rollers 42 in the direction of the workpiece 14 or the other roller, wherein the rotational axis of the workpiece 14 is displaced.
- the workpiece 14 is held by a chuck 56, the clamping jaws are shown, in the axial direction.
- the chuck 56 serves here as an axial guide 54 in order to prevent the workpiece 14 from moving in the direction of the later valve disk during rolling, which is brought about by the axial component of the rolling forces in the region of the valve disk rear side.
- the form rolling has, inter alia, the advantage that the molecular chain structure is retained in the workpiece 14, which produces an undisturbed fiber profile. As a result, it can be determined on the basis of the crystal structure by metallurgical processes also on the finished valve that it was produced or formed by molding.
- the axes 48 of the forming rollers 42 form a plane and the axis of the workpiece 14 is parallel to this plane, but not in this plane but in the drawing below this level. In a rolling process, the workpiece 14 would be pushed away when the forming rollers 42 starts a rolling process.
- the workpiece 14 is therefore supported in the figure from below by a guide or radial guide 52 which serves as Radialftihrung.
- the guide in the direction of the axis 46 of the workpiece 14 can be tracked upward to reduce the load on the radial guide 52.
- a multi-part guide which can adapt to the various stages of deformation, in particular in the region of the valve head.
- a series of rollers that can be operated with less wear. The rollers can be moved in the axial direction to avoid local deformation of the workpiece by the guide rollers.
- a heating element can be mounted which heats the workpiece 14 by flame, radiation or induction to ensure that hot rolling occurs throughout the forming process.
- the workpiece 14 can be displaced so far in the axial direction before rolling until it is flush with the upper edge of the forming rolls.
- valve head back has a smaller area than the lateral surface of the valve stem, it seems advisable to create slippage between a valve head back and the corresponding portions of the forming rollers 42, otherwise due to torsional forces between the Venti Itel rear side and the valve stem could lead to destruction of the valve.
- the angular velocity relationships between the shaft and the valve disk are at least as great as the corresponding radii ratios between valve stem and valve disk.
- valve disk to valve stem diameter of about 5 each a Beh memoriais the angular velocities for the average diameter of the valve disk to the shaft diameter of about 2.5, which should be sufficient in a normal rolling process, turn off the valve disk from the shaft or demolish. Therefore, it can be provided to drive the workpiece 14 during forming at a higher speed in order to generate a slip in the region of the valve disk, which significantly relieves the transition from the valve disk to the valve stem and can thus prevent destruction of the workpiece 14 during molding.
- the chuck can be rotated by a separate and not shown drive in rotation, if so provided.
- the rolling device may be provided with a single-roll speed control, which is shown in detail in Figure IB to reduce the wear of the radial guide 52. This is shown in detail in FIG. 1B.
- the controller is not shown in Figure 1A.
- Figure IB shows the same elements as Figure 1A, wherein the forming rollers 42 a finished form-rolled workpiece 14A, wherein the forming rollers 42 are shown in a position at the end of the rolling process.
- the presentation is purely schematic.
- the forming rollers 42 have formed the workpiece 14 into a formed workpiece 14A.
- the formed workpiece 14A still has a through hole 28 extending through the entire valve stem.
- the Formwalzvoriques of Figure IB is provided with a force transducer 66 to at least one radial guide 52 to measure the force with which the workpiece through the forming rollers 42 against the radial guide 52 is pressed.
- the roll forming apparatus of FIG. 1B is also provided with individually driven forming rolls 42 which may be individually driven at a selected speed.
- the load cell or the force sensor 66 is connected to a controller 68 which controls at least the speed or the drive of one of the forming rollers 42 to limit the force exerted by the workpiece 14 / 14A during rolling on the radial guide 52. It may also be provided that the controller also controls a speed or one of the workpiece in order to reduce or at least limit the load on the radial guide 52.
- the workpiece can be held in the middle between the two forming rolls by differential control of the forming rolls, or at a different position, so that the loading and wear of the guides 52 can be minimized.
- the system can also be used on rolling machines with two guides. By a corresponding control, the service life of the rolling device can also be increased, since the intervals at which the guides must be replaced, can be extended.
- Figure IC shows the finished formed workpiece 14A comprising a part substantially forming a valve body.
- the valve body has a valve stem 8, which terminates at a lower end in a valve disk 6 or a rear side of a valve disk 24.
- the valve body does not yet comprise a valve disk surface.
- the valve stem 8 ends at the top of the shaft end 36, to which the valve can be controlled later.
- the shank end can be made directly roll by form as shown, but it is also possible the shank end 36 to form later.
- the through hole 28 was formed into the cavity 10 in the valve plate 6 and the valve stem 8. It is also possible to produce only the cavity 10 by forming and later to bring the valve stem to a final diameter by machining if it should not be possible to adjust the diameter of the through hole 28 and the wall thickness of the workpiece before and after to achieve the molding rolls.
- the workpiece may be separated from the tubular remainder along the dotted line forming the separation point 30.
- At the valve disk surface is here still an opening 18, which can be closed later with a lid to form a finished valve.
- FIG. 1D shows the finished, produced by forming valve 4.
- the valve 4 has a valve stem 8, which terminates at a lower end in a valve plate 6 and a rear side of a valve plate 24.
- the opening 18 on the valve plate surface 22 is closed by a cover 20 which at a joint 32 with the valve by friction, resistance , Electron beam or laser welding was connected.
- the cavity 10 is filled with a sodium coolant 12.
- the coolant used is usually sodium, which is in a liquid state at operating temperatures of the internal combustion engine. Usually, not the entire cavity 10, but only 1/4, 1/3, 1/2, 2/3 to 3/4 of the cavity of the valve is filled with sodium.
- the sodium moves up and down in the valve stem 8 or in the cavity 10 of the valve stem 8 and transports heat from the valve disk 6 in the direction of the cooled valve stem 8 (shaker cooling).
- the sodium moves during each opening or closing operation within the valve 2.
- the cavity 10 was generated in the valve 2, characterized in that the valve disk 6 was provided on the valve plate surface 22 with an opening 18.
- FIG. 2A substantially corresponds to FIG. 1A.
- a description of reference numerals and elements already described in connection with FIG. 1A will not be repeated here.
- a cup-shaped workpiece 16 is now used, in which a bottom already forms the valve disk 6 and the valve disk surface 22.
- a blind hole 26 is used.
- the diameter of the workpiece 16 is greater in the region of the later valve plate than in the region of the later valve stem 8.
- the workpiece already has substantially or precisely, the height of the later valve on. By the form rolling here essentially the valve stem is formed.
- the valve disk can already be shaped to a large extent by machining.
- the cup-shaped workpiece 16 is held in the axial direction by an axial guide 54 in order to be able to form the rear side of the valve disk. It is also contemplated to provide the cup-shaped workpiece 16 with a shoulder on which a chuck may engage to rotate the cup-shaped workpiece during die rolling at a selectable speed. This has already been done in the description of FIGS. 1A and 1B.
- a slip between the valve disk and the mold can be achieved rollers.
- the extension can be removed after machining by machining.
- a wall thickness of the part of the cup-shaped workpiece 16, which later forms the valve stem can be made thinner, which later results in a smaller wall thickness of the valve stem.
- the cup-shaped workpiece 16 less deformed than the workpiece of Figure 1A / 1B.
- the valve is already almost finished after the forming rollers.
- the cavity 10 has a large diameter in the region of the valve disk, which leads one to expect improved cooling properties.
- the shank has a smaller wall thickness than in the case of FIGS. 1B. It is possible because of the lower degree of deformation to roll the shaft without it may be necessary to reduce the outer diameter of the valve stem by a further processing step.
- FIG. 2C illustrates an inventive internally cooled valve 4 having a valve stem which terminates at a lower end in a valve disc.
- the valve stem 8 terminates at the top in a stem end 36.
- the valve is provided with a cavity 10 which is filled with a coolant 12.
- the coolant can be filled, for example, with the coolant through an opening or bore on the valve stem.
- the valve according to the invention has, in the region of the valve disk, a cavity with a large diameter, which can exceed the diameter of the valve stem.
- the valve disk, with the valve disk surface 22, the valve disk rear side 24 and the valve stem are formed in one piece. The finished valve therefore has neither in the region of the valve disk nor in the region of the lower valve stem joints. It is possible to close the cavity 10 with coolant after filling with a valve stem end, for example by friction welding.
- FIG. 3A essentially represents the shape of rolling device of FIG. 2A.
- the forming rollers of Figure 3 A are provided with a surface structure 58, which causes a transport of the workpiece material in the axial direction during the form rolling.
- the surface structure 58 which causes a transport of the workpiece material in the axial direction, is designed here as a thread, which generates an axial force in the direction of a later valve stem end upon rotation of the forming rollers 42.
- a thread which generates an axial force in the direction of a later valve stem end upon rotation of the forming rollers 42.
- With the surface structure it is possible to use a shorter cup-shaped workpiece 16.
- a force is also exerted in the axial direction on the cup-shaped workpiece, whereby the material during rolling can spread not only in the radial direction but also in the axial direction.
- the surface structure 58 is designed here as a thread.
- the thread is smaller Flank height and small pitch performed that only exerts forces, but not einwalzt a thread in the valve stem.
- the material can not only flow in the circumferential and radial directions, but also due to the axial forces in a position to flow in the axial direction or to deform. This effect results overall in a possibility to start with a cup-shaped workpiece with a larger wall thickness, which can significantly increase the process reliability of the process.
- FIG. 3B illustrates the rolling process from the cup-shaped workpiece 16 in the direction of the valve stem end, wherein the material displacement is indicated by thin arrows.
- Figures 3A and 3B can manage without an axial guide, when the surface structure 58 generates a sufficiently large axial force to form the back of the valve disc surface 24 by forming rollers.
- Figure 3C shows a valve 4 made with the roll forming apparatus of Figures 3A and 3B. It differs from the valve of Figure 2C only by the crystal structure of the material.
- FIG. 4A essentially corresponds to FIGS. 1A to 3A. A description of reference numerals and elements already described in connection with FIGS. 1A to 3A will not be repeated here.
- FIG. 4A uses the same short cup-shaped workpiece 16 as shown in FIGS. 3A and 3B. Instead of cylindrical rollers, the axes of which are aligned parallel to one another, the embodiment of FIG. 4A and FIG. 4B uses hyperboloidal shaping rollers 44 whose axes are skewed relative to one another.
- the rolling process is a skew rolling method because at least the axis of one of the molding rolls is inclined with respect to the axis of the cup-shaped workpiece.
- the axes of the rolls are skewed with each other, and an angle between the axes can be given as the angle in orthogonal projection of the axes.
- the 48 axes of the Form rollers each inclined at the same angle to the axis 46 of the cup-shaped workpiece 16. Due to the inclination and rotation of an axial force is generated in the direction of the later valve stem end during rolling. Thus, a similar effect can be generated as with the surface structure 58 in Figs. 3A and 3B. It is of course also possible to provide the forming rolls of Figures 4A and 4B with a corresponding surface structure 58 as disclosed in Figures 3A and 3B.
- the forming rollers 44 form single-walled hyperboloid rotors whose generating non-straight lines are the profile of an inlet or outlet valve. Cylindrical rollers would not produce a cylindrical product but a single-walled hyperboloid as the distance between the axes of the rollers would be the shortest distance, depending on the distance increased. To compensate for this effect, the rollers themselves must have a form of a single-shell hyperboloid. When Schrägformwalzen the rollers must also have the profiling of the final product. So they form profiled single-shell hyperboloid surfaces. In contrast to the embodiments of FIGS.
- the workpiece is here guided by two opposite radial guides 52 which guide the cup-shaped workpiece 16 between the hyperboloidal skew rollers 44.
- the guides must also be tracked during the Formwalzvorgangs. It is particularly possible to use the single roll control of Figure 4B also in the rolling device of Figures 4A and 4 B.
- both radial guides 52 may here be provided with at least one force transducer 66, which are each connected to a controller 68, which in turn controls the speed or the drive at least one of the forming rollers 44.
- the controller can be used to hold the workpiece 16 exactly between the rollers 44 and / or reduce the wear of the radial guides 52.
- FIG. 4A illustrates the hyperboloidal forming rolls 44 in an end position after the forming roll.
- torsional forces are generated in the shank which are smaller at lower roll axis angles. The larger the angle between the roller axes 48, the greater the generated axial force.
- the embodiment of Figures 4A and 5B can also do without an axial guide, since a sufficiently large axial force is generated by the oblique rollers. It is also possible to use the surface structure 58 of FIGS. 3A and 3B in order to further increase an axial force generated during rolling.
- Figure 5A illustrates a combination of Figures 1A, 2A, 3A and 4A.
- the cup-shaped workpiece is guided only from one side by a radial guide 52.
- the left mold roll 42 has the same shape as in FIGS. 1A and 2A, and the axis of the left mold roll 42 is aligned parallel to the axis of the cup-shaped workpiece 16.
- the left mold roll is designed as hyperbolic molding roll 44, as in FIG. 4A.
- the hyperbolic forming roll 44 is also provided with the surface structure 58 of FIGS. 3A and 3B.
- the axis 50 of the hyperbolic form roller 44 is inclined relative to the axis 48 of the left mold roll 42 and the axis 46 of the cup-shaped workpiece.
- the right hyperbolic forming roller 44 generates during forming a strong axial force in the direction of the later valve end of the shaft. This axial force is sufficient, with a suitable design to extend a short cup-shaped workpiece 16 during the form rolling in the axial direction.
- FIG 5B illustrates the rolling apparatus at the end of the rolling process.
- the hyperboloidal forming rolls 44 are in an end position after the forming rolling in Figure 5B.
- the left hyperbolic forming roll 44 covers the upper valve stem end of the rolled valve.
- the shape of the rollers also requires that the valve disc cover the lower part of the left hyperbolic shaping roller 44.
- the lower portion of the right hyperbolic forming roll 44 partially overlaps the valve head of the formed workpiece 16A.
- the valve stem end covers the upper part of the contact point of the right hyperbolic forming roller 44 with the valve stem end.
- Figures 6A and 6B illustrate another additional embodiment of a workpiece and an internally cooled valve.
- the workpiece shown in Figure 6A substantially corresponds to the workpiece of Figure 2A.
- the workpiece of FIG. 6A is provided with an outer contour 70.
- the blind hole 26 is as shown in Figure 2A as a cylindrical hole.
- the outer contour 70 forms, together with the cylindrical blind hole 26, a thickness variation of the shank.
- the outer side of the shaft is formed substantially cylindrical.
- the outer contour 70 is flattened and transferred inwardly to the inside of the blind hole 26, wherein inside an inner contour is formed in the blind hole.
- the thickness variation of the shaft remains substantially preserved, the contour after forming now on the inside. is formed in the cavity 10 as an inner contour 72.
- the inner contour is designed so that it forms a Laval nozzle at the transition between valve disk 6 and valve stem 8. It should be clear that other internal contours can be generated with this method. It should also be understood that this principle can also be applied to the embodiments in which an extension of the shank during forming is also achieved, as for example in FIGS.
- FIGS. 1A and 1B to 5A and 5B should also be regarded as disclosed, provided that they can be technically implemented.
- This relates in particular to the control or regulation of the individual roller speeds as a function of forces which has been measured on at least one radial guide.
- configurations with one-sided and two-sided support by radial guides for all embodiments are planned.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Forging (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16736838T PL3368232T3 (pl) | 2015-10-26 | 2016-07-06 | Sposób oraz urządzenie do wytwarzania ochładzanego wewnętrznie zaworu dla silników spalinowych |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015220891.5A DE102015220891A1 (de) | 2015-10-26 | 2015-10-26 | Innengekühltes Ventil für Verbrennungsmotoren sowie Verfahren und Vorrichtung zu dessen Herstellung |
PCT/EP2016/065965 WO2017071840A1 (de) | 2015-10-26 | 2016-07-06 | Innengekühltes ventil für verbrennungsmotoren sowie verfahren und vorrichtung zu dessen herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3368232A1 true EP3368232A1 (de) | 2018-09-05 |
EP3368232B1 EP3368232B1 (de) | 2022-01-12 |
Family
ID=56404096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16736838.0A Active EP3368232B1 (de) | 2015-10-26 | 2016-07-06 | Verfahren und vorrichtung zur herstellung eines innengekühlten ventils für verbrennungsmotoren |
Country Status (9)
Country | Link |
---|---|
US (1) | US20180304344A1 (de) |
EP (1) | EP3368232B1 (de) |
JP (1) | JP6786597B2 (de) |
CN (1) | CN108348982B (de) |
BR (1) | BR112018006586A2 (de) |
DE (1) | DE102015220891A1 (de) |
MX (1) | MX2018004262A (de) |
PL (1) | PL3368232T3 (de) |
WO (1) | WO2017071840A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202017007601U1 (de) | 2017-06-20 | 2023-07-03 | Profiroll Technologies GmbH | Umformmaschine |
DE102017113503A1 (de) * | 2017-06-20 | 2018-12-20 | Profiroll Technologies Gmbh | Umformmaschine und Druckumformverfahren |
DE102017114554A1 (de) * | 2017-06-29 | 2019-01-03 | Federal-Mogul Valvetrain Gmbh | Verfahren zur Herstellung eines innengekühlten Ventils mit einer Kühlstruktur sowie ein mit dem Verfahren hergestelltes Ventil |
SE541253C2 (en) * | 2017-10-18 | 2019-05-14 | Gasporox Ab | System and method for determining the integrity of containers by optical measurement |
DE102017127986A1 (de) * | 2017-11-27 | 2019-05-29 | Federal-Mogul Valvetrain Gmbh | Innengekühltes Ventil mit Ventilboden und Verfahren zu dessen Herstellung |
DE102018100413B3 (de) | 2018-01-10 | 2019-07-11 | Federal-Mogul Valvetrain Gmbh | Verfahren und Vorrichtung zum Herstellen von hohlen, innengekühlten Ventilen |
KR102285017B1 (ko) | 2018-03-20 | 2021-08-04 | 니탄 밸브 가부시키가이샤 | 배기용 중공 포핏 밸브 |
DE102018112291A1 (de) | 2018-05-23 | 2019-11-28 | Federal-Mogul Valvetrain Gmbh | Verfahren zur herstellung eines hohlventils für verbrennungsmotoren |
DE102018112295A1 (de) * | 2018-05-23 | 2019-11-28 | Federal-Mogul Valvetrain Gmbh | Verfahren zur herstellung eines hohlventils mit optimierter schaftinnengeometrie für verbrennungsmotoren |
DE102018122441A1 (de) * | 2018-09-13 | 2020-03-19 | Federal-Mogul Valvetrain Gmbh | Geschweisstes hohlraumventil mit kleiner wärmeeinflusszone und verfahren zur herstellung |
JP7190506B2 (ja) * | 2018-11-12 | 2022-12-15 | 株式会社Nittan | エンジンのポペットバルブの製造方法 |
DE102019106209A1 (de) * | 2019-03-12 | 2020-09-17 | Federal-Mogul Valvetrain Gmbh | Verfahren zur Herstellung eines Hohlventils für Verbrennungsmotoren |
EP4129525A4 (de) | 2020-03-30 | 2023-06-14 | Nittan Corporation | Verfahren zur herstellung eines motortellerventils |
CN115245998B (zh) * | 2022-06-14 | 2024-05-17 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种空心气阀合金成形方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1950953A (en) * | 1929-03-16 | 1934-03-13 | Serimgeour William | Hollow forged valve and method of making the same |
GB412359A (en) * | 1933-03-18 | 1934-06-28 | Jean Donat Julien | Improvements relating to the manufacture of hollow metal articles |
GB452696A (en) * | 1935-12-28 | 1936-08-27 | William Scrimgour | Improvements in or relating to the manufacture of valves |
DE671868C (de) * | 1936-01-01 | 1939-02-16 | Nat City Bank Of Cleveland | Verfahren zur Herstellung von hohlen Tellerventilen aus einem Sackrohr |
US2177192A (en) * | 1936-01-27 | 1939-10-24 | Nat City Bank Of Cleveland | Method of making hollow articles |
DE729839C (de) * | 1938-07-15 | 1943-01-04 | Auto Union A G | Verfahren zum Verschliessen des offenen Schaftendes von im Teller und Schaft hohlen Ventilen fuer Verbrennungskraftmaschinen |
GB594439A (en) * | 1941-05-03 | 1947-11-11 | Gabriel Jeudi Dit Jeudy | Process for the manufacture of hollow valves for internal combustion engines |
US3686911A (en) * | 1969-05-23 | 1972-08-29 | Pee Wee Masch & Apparate | Method of an apparatus for semi-hot forming of metallic workpieces in a rolling operation |
JPS6012132B2 (ja) * | 1980-12-29 | 1985-03-30 | 三菱マテリアル株式会社 | 金属管内外面加工装置 |
DE3929534A1 (de) * | 1989-09-06 | 1991-03-28 | Daimler Benz Ag | Verfahren zur herstellung eines ventils |
JPH0557388A (ja) * | 1991-08-27 | 1993-03-09 | Kobe Steel Ltd | エンジンバルブの成形法 |
JPH072257B2 (ja) * | 1993-02-22 | 1995-01-18 | 東洋アルミ株式会社 | 双曲線体の製造方法 |
JP2003305524A (ja) * | 2002-04-09 | 2003-10-28 | Fuji Oozx Inc | エンジンバルブの製造方法 |
US7628870B2 (en) * | 2005-02-08 | 2009-12-08 | Helio Precision Products, Inc. | Heat treated valve guide and method of making |
JP4525461B2 (ja) * | 2005-05-13 | 2010-08-18 | 住友金属工業株式会社 | 超薄肉長尺金属缶の製造方法 |
DK177071B1 (en) * | 2009-10-30 | 2011-05-30 | Man Diesel & Turbo Deutschland | Exhaust valve spindle for an internal combustion engine and a method of manufacture thereof |
JP2014084725A (ja) * | 2012-10-19 | 2014-05-12 | Mitsubishi Heavy Ind Ltd | エンジンバルブ及びその製造方法 |
-
2015
- 2015-10-26 DE DE102015220891.5A patent/DE102015220891A1/de not_active Ceased
-
2016
- 2016-07-06 EP EP16736838.0A patent/EP3368232B1/de active Active
- 2016-07-06 US US15/770,991 patent/US20180304344A1/en not_active Abandoned
- 2016-07-06 WO PCT/EP2016/065965 patent/WO2017071840A1/de active Application Filing
- 2016-07-06 MX MX2018004262A patent/MX2018004262A/es unknown
- 2016-07-06 JP JP2018521406A patent/JP6786597B2/ja active Active
- 2016-07-06 CN CN201680060659.3A patent/CN108348982B/zh active Active
- 2016-07-06 BR BR112018006586-2A patent/BR112018006586A2/pt not_active Application Discontinuation
- 2016-07-06 PL PL16736838T patent/PL3368232T3/pl unknown
Also Published As
Publication number | Publication date |
---|---|
CN108348982A (zh) | 2018-07-31 |
BR112018006586A2 (pt) | 2018-10-23 |
JP6786597B2 (ja) | 2020-11-18 |
DE102015220891A1 (de) | 2017-04-27 |
MX2018004262A (es) | 2018-08-01 |
US20180304344A1 (en) | 2018-10-25 |
CN108348982B (zh) | 2019-10-15 |
PL3368232T3 (pl) | 2022-05-02 |
WO2017071840A1 (de) | 2017-05-04 |
EP3368232B1 (de) | 2022-01-12 |
JP2019506555A (ja) | 2019-03-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3368232B1 (de) | Verfahren und vorrichtung zur herstellung eines innengekühlten ventils für verbrennungsmotoren | |
DE69919825T2 (de) | Verfahren zum Formen von Teilen aus einem kontinuierlichen Material | |
DE69535323T2 (de) | Schmiedeverfahren und -vorrichtung | |
DE10159776C2 (de) | Herstellung eines Gelenkinnenteils | |
WO2016062648A1 (de) | RÜHRREIBSCHWEIßWERKZEUG SOWIE VERFAHREN ZUM RÜHRREIBSCHWEIßEN | |
DE10005578C2 (de) | Verfahren und Drückwalzvorrichtung zum Herstellen eines Hohlkörpers | |
WO2013135652A1 (de) | Verfahren und vorrichtung zum bruchtrennen eines werkstücks | |
WO2010046353A1 (de) | Herstellungsverfahren für geschlossene laufräder | |
DE102008043661A1 (de) | Welle für eine elektrische Maschine, insbesondere für einen Motorgenerator | |
DE2144006C3 (de) | Verfahren zur Herstellung von Kegelzahnrädern | |
EP3504025A1 (de) | Bremsscheiben-werkzeug zum bearbeiten eines bremsscheiben-rohlings, bremsscheiben-herstellanlage und verfahren zum herstellen einer bremsscheibe | |
DE2903847C2 (de) | ||
DE102012015308B4 (de) | Umformvorrichtung und Umformverfahren zur Oberflächenbearbeitung eines Motorbauteils | |
DE102012102951A1 (de) | Verfahren und Vorrichtung zum Fügen eines Nietelements | |
EP3585986B1 (de) | Verfahren zur herstellung eines innengekühlten ventils mit einer kühlstruktur sowie ein mit dem verfahren hergestelltes ventil | |
EP2734318B1 (de) | Walze für ein ringwalzwerk | |
DE10121546B4 (de) | Verfahren und Drückrolle zum Anformen einer Nabe | |
EP3898025A1 (de) | Verfahren zur herstellung eines hohlventils für verbrennungsmotoren | |
DE69812861T2 (de) | Walzwerk zur herstellung von axialsymmetrischen teilen | |
DE102019104659A1 (de) | Innengekühltes Ventil mit Kühlmittelleitsystem | |
DE2521192C3 (de) | Werkzeug zur Fertigbearbeitung innerer Rotationsflächen | |
DE102018112193B4 (de) | Verfahren zur Herstellung einer Nietverbindung | |
EP4103341B1 (de) | Verfahren zur herstellung eines gelenkwellenbauteils, verfahren zur herstellung einer gelenkwelle und gelenkwellen-bauteil hergestellt mit einem solchen verfahren | |
EP2711103A1 (de) | Verfahren und Vorrichtung zum Fliessdrücken von Werkstücken | |
DE102011109812B4 (de) | Bearbeitungsvorrichtung zur Herstellung einer Bauteilverbindung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20180207 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20211005 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502016014395 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1462030 Country of ref document: AT Kind code of ref document: T Effective date: 20220215 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20220112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220512 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220412 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220412 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220413 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220512 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502016014395 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
26N | No opposition filed |
Effective date: 20221013 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20220706 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20220731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220706 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220706 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220731 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230528 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220706 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20230620 Year of fee payment: 8 Ref country code: FR Payment date: 20230621 Year of fee payment: 8 Ref country code: CZ Payment date: 20230623 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20230623 Year of fee payment: 8 Ref country code: PL Payment date: 20230621 Year of fee payment: 8 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1462030 Country of ref document: AT Kind code of ref document: T Effective date: 20220706 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220706 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20230620 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20160706 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |