EP1250199A1 - Verfahren und umformwerkzeug zur zylinderrohrherstellung mittels fliesspressen - Google Patents
Verfahren und umformwerkzeug zur zylinderrohrherstellung mittels fliesspressenInfo
- Publication number
- EP1250199A1 EP1250199A1 EP01909499A EP01909499A EP1250199A1 EP 1250199 A1 EP1250199 A1 EP 1250199A1 EP 01909499 A EP01909499 A EP 01909499A EP 01909499 A EP01909499 A EP 01909499A EP 1250199 A1 EP1250199 A1 EP 1250199A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mandrel
- blank
- drawing die
- forming tool
- tool according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
- B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/30—Finishing tubes, e.g. sizing, burnishing
Definitions
- the invention relates to a method for producing cylinder tubes with plastic deformation of a hollow cylindrical blank by extrusion, the cylinder tube being produced.
- the blank is introduced into an essentially cylindrical drawing die up to a stop.
- a drawing mandrel with a larger outside diameter than the inside diameter of the blank is then moved through the cavity of the blank in the drawing die.
- the length of the tubular blank increases, and the wall of the blank is reduced in cross section.
- the invention further relates to a forming tool suitable for carrying out the method with the hollow cylindrical die for receiving the tube blank and the drawing mandrel, which can be inserted into the blank by means of a mandrel bar.
- the mandrel is provided with a conical outer wall section for realizing a drawing angle between the inner wall of the blank and the mandrel.
- DE 195 32 253 A1 discloses methods for producing thin tubes in both forward and reverse extrusion.
- a press ram is used, the outer jacket surfaces of which are effective in forming run parallel to the axis.
- an ejector arranged at the bottom in a die is proposed, which serves as an axial support for an initially solid-cylindrical blank block (without a cavity) during the flow process.
- the object of the invention is to enable time-saving production of pipes with narrow tolerance dimensions and increased reliability in such an extrusion process.
- tolerance dimensions for the outer diameter of the tube should also be able to be influenced.
- the inside diameter of the drawing die and the outside diameter of the blank are each selected so that there is radial play between the drawing die and the blank, and the wall of the blank when the drawing mandrel is moved through in radial Direction is pressed against the drawing die, the blank being (also) expanded with its outer diameter.
- the invention includes the procedural teaching that the following process steps are carried out for cylinder tube production: First, a tube is inserted into an essentially cylindrical drawing die of a tool housing up to a stop (on the start or bottom side) and with radial play relative to the outer wall of the drawing die. A mandrel with a larger outside diameter than the inside diameter of the tube blank is then inserted into the tube from the opening side of the drawing die. While the mandrel is being driven through, the outside diameter of the tube expands both inside and outside in such a way that the blank material lies radially against the inner wall of the drawing die and the cross-sectional thickness of the tube blank is reduced. This results in a blank length increase either counter to or in the direction of the mandrel feed direction, depending on whether a forward or backward extrusion is brought about.
- the process limits are determined by the yield point of the blank on its end support or the stop.
- the maximum, permissible reduction in the cross-sectional area of the blank must be selected in such a way that when the drawing mandrel is passed through, there is no flow of the material at the bottom stop or the front bearing surface, in particular when a backward extrusion is realized.
- the advantage of a time-saving cylinder tube production is achieved in only one working stroke.
- the method is also carried out in stages using several mandrels with different outside diameters and appropriately adapted drawing dies.
- the process according to the invention is expedient because of the process limits mainly for the production of cylinder tubes of relatively short length. It is not necessary to cut to length - as in the case of the drawing of pipes discussed at the beginning - so that the production time can be shortened. Tests have shown that the cylinder tubes produced in this way have an envelope tolerance of high quality - better than H9.
- a blank In order to simplify the holding of the tube blank in relation to the axial forces exerted by the drawing mandrel, according to an embodiment of the invention, provision is made for a blank to be used with an end section which has previously been enlarged in cross section. This can then cooperate with a stop or only one end edge of the drawing die for the purpose of axially holding the blank.
- the blank is simply crimped in the end region in order to widen its cross section before it is introduced into the drawing die.
- the ejection organ can advantageously be used simultaneously for the axial support of the blank during extrusion and removal.
- This additional, functional utilization of the ejection organ for support in the bottom end area of the die results in a backward extrusion and - associated with this - a corresponding increase in length.
- the cross-sectional enlargement can be formed at the end of the blank, which, when viewed in the direction of movement, lies at the rear in the drawing die.
- the cross-sectional enlargement can be used as a holding element in the beginning or entrance area of the drawing die by hanging and supporting the blank there on the drawing die via the cross-section enlargement.
- the increase in length can be achieved by forward extrusion within the drawing die.
- a stripping element for releasing the completely shaped cylinder tube from the drawing mandrel when it is moved out of the drawing die is arranged in or in front of the entrance area of the drawing die in a forming tool with the features mentioned at the beginning. In this way, when the drawing mandrel is moved back, it is possible to prevent the finished tube from being carried along by means of the stripper arranged on the opening side of the drawing die. After forming, the mandrel can be easily pulled out of the tube, with the further advantage of smoothing the inner wall of the tube again.
- an ejection element for the (finished formed) cylinder tube which is expediently movable parallel to the movement stroke of the drawing mandrel or the mandrel rod, is integrated into the forming tool according to one embodiment of the invention.
- the Auswerforgan can - just like other components of the forming tool such.
- mandrel - expediently drive linearly by means of hydraulic cylinders, which makes integration into the overall tool very practical.
- the ejection element is to be controlled or operated in coordination with the respective position of the stripping element at the entrance of the drawing die.
- an overall control is expedient in such a way that the ejection element is only attached to the (fully formed) cylinder tube after the scraper element has been actuated.
- axially acting stop means for the tube blank are provided in the bottom region of the drawing die, in order to enable backward extrusion.
- the stop means are advantageously mounted such that they can be moved radially outward by bumping or other action of the pull mandrel shortly before the drawing mandrel completely passes through the blank. This will completely pass the Drawing mandrel enables, so that post-processing of the (finished) cylinder tube is advantageously avoided.
- the retention of the supporting action by means of the sling means is ensured by the fact that, despite the radial transverse displacement, they can still protrude into the edge area or bottom opening area of the drawing die so that they are congruent with the opposite or bottom end face of the blank and capture it there and axially can hold.
- the ejection element mentioned can also press the stop means radially outward from the opposite direction if this ejection element presses the (finished) cylinder tube on its end face out of the drawing die and thereby strips the stop means and thereby exerts radial displacement forces on them.
- an inventive design is expedient, according to which the drawing die has a shape tapering towards the bottom end. Tapering from the opening to the bottom side by an amount of 0.01 to 0.05 mm per 100 mm in length has proven particularly favorable. This slight taper affects the wall thickness, but the drawing process ensures parallelism or cylindricity of the inner wall, so that only the outer wall is conical in the 100th area. Due to the slightly conical drawing die, the material flows more easily in the optimal length in the opposite direction of the mandrel during the forming process. In other words, the outer diameter created at the cutting plane moves continuously to cutting planes with a larger die dimension, so that there is a slight slack.
- the drawing die is advantageously designed with a working or pressing length of 10 to 500 mm. With this length, the average diameter of the (slightly conical) drawing die, in coordination with the outside diameter of the drawing dome, allows pipes of 2 to 4 mm wall thickness to be formed as favorable process parameters. Other process parameters can also be implemented taking into account individual influencing variables or boundary conditions.
- the drawing angle is expediently formed on the order of 6 to 8 ° in order not only to bring about the flow of material on the inner wall of the blank, but also to be able to produce an optimal radial transverse force via this support angle in the presence of radially outwardly displaceable stop means. On the other hand, the supporting action of the lifting gear must not be prevented if the flow of blank material in the front area is to be avoided. A pull angle of 7 ° has proven to be particularly favorable in practice.
- the cylinder tube to be produced: after the drawing mandrel has passed through the blank or the cylinder tube, the rear end area on the opening side of the drawing die is expanded in diameter by a subsequent expanding mandrel.
- the expanding mandrel is axially spaced behind or after the drawing mandrel, which is attached to the end of the mandrel rod.
- a complementary shape is expedient in the inner region of the opening side of the drawing die, with which the expanding mandrel can interact.
- this holding device is designed to be stationary and complementary with respect to an end section of the blank, so that a non-positive and / or positive engagement between the assigned blank end and the holding device is possible.
- Figure 1 shows an embodiment of an inventive
- FIG. 2 shows a sectional illustration along line A-A in FIG. 1,
- FIG. 3 shows a further embodiment of a forming tool according to the invention in partial longitudinal section analogous to FIG. 1, but with an additional expanding mandrel,
- Figure 8 is a sectional view taken along line B-B in Figure 7.
- the forming tool for cylinder tube production consists of a tool housing made of steel, in which an essentially cylindrical drawing die 2 is integrated. This receives a tubular blank 3 as a workpiece to be formed.
- the blank 3 is inserted into the cylindrical drawing die 2, the diameter or the blank diameter of which is selected such that a radial play RS remains between the blank 3 and the inner wall of the drawing die 2.
- the blank 3 is brought into contact with a plurality of stop bodies 4 on the bottom. These are arranged between the drawing die 1 or an assigned drawing mandrel 6 on the one hand and a bottom-side ejector 8 (see also FIG. 2).
- stop bodies 4a to 4d are provided. They are radially displaceable in recesses in the tool housing 1 in the transverse direction 4e and are held in the basic position which is extended radially inwards by spring means (not shown).
- the mandrel 6 is attached to the end of a mandrel rod 5. It is designed with a rotationally symmetrical shape, which is also conically tapered in the direction of the bottom ejection organ 8.
- the conicity angle which forms the above-mentioned drawing angle ⁇ , is 7 ° with respect to the tool center axis 1a or the inner wall of the blank 3.
- the mandrel rod 5 is for its linear drive, for example via hydraulic cylinders, in an upper part of a press, which is not shown completely here clamped.
- the tool housing 1 is attached to a press table (not shown).
- the drawing mandrel 6 has a larger outside diameter than the inside diameter of the blank 3 and is inserted into the blank 3 from the opening side of the drawing die 2. As can be seen from FIG. 1, the diameter of the blank 3 is widened from the inside while the mandrel 6 is being driven through. At the same time, the blank wall is reduced in its cross-sectional thickness. Due to the mandrel 6 there is a radial application of material of the blank wall to the inner wall of the drawing die 2. The radial play mentioned above is overcome by the pressing action of the mandrel.
- the mandrel 6 can push the bottom-side, radially movable stop 4 just before the complete passage of the blank 3 until the stop body 4a-4d still protrude sufficiently into the bottom-side end region of the drawing die 2 and so can maintain their axial support. They still protrude so far into the bottom opening area of the drawing die 2 so that the blank 3 or the corresponding cylinder tube can be supported on the end face thereof. At the same time, a complete passage or passing through the drawing mandrel 6 is ensured by the drawing die 2 and the blank 3.
- the (finished) cylinder tube pressed on the mandrel 6 is also taken back.
- a stripping element 7 arranged in the entrance or opening area of the drawing die 2.
- the stripping element 7 can be realized, for example, by means of a plurality of blocking bodies arranged concentrically to the central axis 1a of the tool, which are grouped together in the same way as the stop bodies 4a-4d according to FIG.
- the individual blocking bodies of the stripping member 7 are expediently displaced radially inwards for actuation by a linear drive based on pressure means (not shown) so that the (finished) cylinder tube can strike the blocking bodies of the stripping member 7 with its rear end face and get caught.
- the ejector 8 arranged on the bottom then becomes active by pushing the cylinder tube out of the drawing die 2 on its opposite end side adjacent to the drawing angle while pushing away the bottom stop 4.
- this or its individual stop body 4a-4d has a respective bevel 4f, which is arranged in relation to the bottom-side ejector 8 in such a way that the latter, when actuated by driving onto the bottom-side die opening, onto the bevel 4f encounters. This creates a radial force component by means of which the stop body or bodies 4a-4d can be displaced radially outward from their radially inner starting position against spring pressure.
- the second exemplary embodiment differs from the first according to FIGS. 1 and 2 by an expanding mandrel 9, which is additionally arranged on the mandrel rod 5 after the mandrel 6 with an axial distance 10.
- the axial distance 10 corresponds approximately to the length of the blank or (finished) cylinder tube 3.
- the working stroke for the mandrel rod 5 is set such that the expanding mandrel 9 acts on the blank 3 in the upper or first opening area of the drawing die 2, the (rear) end of which is widened, but only after the drawing process has been completed by means of the upstream drawing mandrel 6.
- the embodiment according to FIG. 4 differs from those according to FIGS. 1-3 essentially in that stop means are not arranged in the bottom opening area of the drawing die or are not necessary. This is due to a modified design of the blank 3 at its end opposite the bottom opening area of the drawing die 2. This is "sculpted" in cross-section, that is to say provided with a cross-sectional enlargement or protuberance 11. The front face of the blank 3 is displaced radially in advance by this, so that the ejection element 8 additionally functions as a counter-holder against the direction of advance of the drawing mandrel 6 during of the flow process.
- the "tapping" or protruding of the tube is expediently carried out before introduction into the drawing die 2. This has the advantage that additional structural components such as the abutment bodies mentioned above are no longer necessary.
- the forming tool shown in FIG. 5 essentially corresponds to that according to FIG. 4. However, within the scope of the invention
- the protuberance 11 is formed on the opposite end of the blank 3, as seen in the feed direction.
- the protrusion 11 encompasses the input edge of the drawing die 2.
- the ejector 8 no longer needs to act as a counter-holder or support to ensure a backward extrusion, as in FIG. 4, but is used solely for the actual one
- the design of the forming tool according to FIG. 6 is also based on the use of a tube blank 3 with the protuberance 11 at the rear end for “hanging up” in the opening or entrance area of the drawing die 2 in order to absorb the axial forces of the drawing mandrel 6.
- a retaining ring 12 is provided in the embodiment according to FIG. 6, which, in the position shown in FIG. 6, rests on the inner edge on the upper side of the drawing die 2 and is connected radially on the outside to a head plate 13.
- the retaining ring 12 and head plate 13 are rigidly connected to one another, and this composite is arranged in a stationary or fixed manner in the context of the forming tool.
- the drawing die 2 can be loosened and moved downward in the further working stroke of the drawing mandrel 6, in the sense of being carried along by the drawing mandrel 6.
- the drawing die 2 is surrounded on its outer jacket by a clamping ring 14, which has a guide piston 15 on its upper or is firmly connected to the rear side.
- a pressure plate 16 is rigidly attached, which has a radially inwardly projecting section. With this, the pressure plate 16 rests on the end face of a pressure tappet 17, which performs the function of a pressure cushion (see below).
- a tappet pin 18 is in contact with that side of the pressure plate 16 which faces away or opposite the pressure ram, the end face of which is opposite the opposite end side of the drawing mandrel 6.
- the mandrel is driven or moved by a press ram 19 via the mandrel bar 5.
- This can be connected to a pressure cylinder-operated working cylinder or other linear drive (not shown).
- the combination of drawing die 2, clamping ring 14 and pressure plate 16 is linearly guided back and forth within a guide bushing 20 in accordance with the working stroke of the drawing mandrel 6.
- the tube blank 3 is “sculpted”, that is to say, for example, by being provided with the protuberance 11.
- the blank 3 is thus in contact with the underside of the clamping ring 12 Drawing die 2 inserted and held on the protuberance 11 on the radially inward slope of the clamping ring 12.
- the press ram 19 drives the mandrel rod 5 and the drawing mandrel 6 at the end of the mandrel rod into the cavity of the blank 3. Due to its larger diameter, the drawing mandrel 6 widens the blank 3 from the inside, so that the radial play RS that previously existed between the outer wall of the blank 3 and the inner wall of the drawing die 2 is eliminated.
- the wall thickness of the blank 3 is quenched as it were.
- the resulting axial forces are absorbed by the pressure ram 17 via the radially inwardly projecting section of the pressure plate 16.
- the drawing mandrel 6 strikes the tappet pin 18, whereby the entrainment of the assembly comprising the clamping ring 14, guide piston 15, the drawing die 2 clamped in between and the pressure plate 16 is started.
- the pressure tappet 17 is designed to react to a preset pressure threshold and yields like a pressure cushion when this pressure threshold is exceeded.
- a signal generated in a control system finally causes the plunger 17 to move back completely in the further course of the working stroke. Because a counter-holder by the pressure ram 17 is no longer required as the working stroke progresses.
- the drawing mandrel 6 and the drawing die 2 are moved simultaneously or synchronously with one another in accordance with the working stroke, the forming or the extrusion of the blank 3 taking place.
- the front end of the blank 3 is run over.
- the increase in length in the sense of forward extrusion results in accordance with the reduction in the wall thickness or the cross section of the blank.
- the blocking body of the stripping member 7 is moved radially inward, so that the rear end of the cylinder tube strikes the blocking body, and the cylinder tube is stripped from the drawing mandrel 6 with a progressive return stroke. If the cylinder tube is completely detached from the drawing mandrel 6, it can be removed and, depending on the requirement, the protuberance 11 again be eliminated.
- the pressure tappet 17 can now be moved back into the starting position shown in FIG. 6, the combination of drawing die 2, clamping ring 14 and pressure plate 16 also being moved back into the starting position according to FIG. 6. Now a new work cycle can begin.
- FIGS. 7 and 8 largely corresponds to that according to FIG. 6.
- the two positions shown in FIG. 7 in the axial partial section (retracted-extended) can be transferred analogously to the forming tool according to FIG.
- the forming tool according to FIGS. 7 and 8 has the following differences:
- the tappet pin 18 is fastened directly to the press tappet 19 and is moved by it linearly and axially parallel in accordance with the working stroke.
- the plunger pin 18 passes through the head plate 13 and presses on the drawing die 2 for its linear displacement.
- the guide piston 15 is moved along with the clamping ring 14 firmly connected thereto and the pressure plate 16 on the underside.
- an arrangement of a clamping ring 21 and a compression spring 22 is additionally provided.
- the clamping ring surrounds the mandrel rod 5 concentrically and lies on the cross-sectional or conically expanded mandrel 6 in the axial direction.
- the clamping ring has a taper 23 on its outer jacket, with which a counter-taper 24 on the inner jacket of the retaining ring 13 corresponds in a complementary manner.
- a receiving ring gap for the protuberance 11 of the blank 3 is formed, which runs obliquely to the tool central axis 1a.
- the compression spring 22 winds around the mandrel rod 5 and is supported on the one hand against the underside of the press ram 19.
- the spring 22 enters a recess in the end face of the clamping ring 21, as a result of which the latter is pressed onto the mandrel 6 in an axis-parallel manner.
- a radially directed force component is created on the protuberance 11 of the blank 3, as a result of which the latter is held with a stronger clamping force.
- this clamping force becomes stronger because the press ram 19 compresses the compression spring 22 and thus increases the spring tension.
- the clamping ring 21 is expediently designed to be, for example, 0.05 mm smaller than the drawing mandrel 6, so that the clamping ring 21 is reliably pressed on by the compression spring 22.
- the drawing die 2 is taken along by the tappet pin 18, as already described above, the holding force increases due to the increased pressure of the spring 22 on the clamping ring 21.
- Known processing methods for pipe ends can be used to bring the cylinder pipe produced according to FIG. 7 to the desired length and end shape.
- the protuberance 11 (“tulip”), which is mainly pre-attached for holding purposes, is removed again in most cases.
- the scraper element 7 is formed with two blocking bodies 7a, 7b, which are diametrically opposite with respect to the central axis 1a and which can be moved or driven radially back and forth. Furthermore, it can be seen in the sectional illustration in FIG. 8 that a total of four tappet bolts 18a-18d are arranged at uniform angular intervals of 90 ° each.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Extrusion Of Metal (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10004732 | 2000-01-28 | ||
DE10004732 | 2000-01-28 | ||
PCT/DE2001/000227 WO2001054839A1 (de) | 2000-01-28 | 2001-01-19 | Verfahren und umformwerkzeug zur zylinderrohrherstellung mittels fliesspressen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1250199A1 true EP1250199A1 (de) | 2002-10-23 |
EP1250199B1 EP1250199B1 (de) | 2003-07-23 |
Family
ID=7629699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01909499A Expired - Lifetime EP1250199B1 (de) | 2000-01-28 | 2001-01-19 | Verfahren und umformwerkzeug zur zylinderrohrherstellung mittels fliesspressen |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1250199B1 (de) |
AT (1) | ATE245499T1 (de) |
AU (1) | AU2001237229A1 (de) |
DE (2) | DE50100414D1 (de) |
WO (1) | WO2001054839A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019103926A1 (de) * | 2019-02-15 | 2020-08-20 | Walter Henrich GmbH | Verfahren und Vorrichtung zum axialen Umformen eines Rohres |
CN111069445B (zh) * | 2019-11-27 | 2021-03-02 | 江阴和宏精工科技有限公司 | 一种铜管扩径拉拔的壁厚控制方法 |
CN117732900B (zh) * | 2024-01-02 | 2024-07-02 | 浙江三基钢管有限公司 | 一种冷拔设备 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE466434C (de) * | 1928-10-16 | Siegener Eisenbahnbedarf Akt G | Verfahren zum genauen Innenziehen von Hohlkoerpern | |
GB922266A (en) * | 1962-01-08 | 1963-03-27 | Joseph Wilson Yowell | Improvements in or relating to the production of tubes |
FR1528079A (fr) * | 1967-04-28 | 1968-06-07 | Nippon Denso Co | Procédé pour le finissage des carcasses de moteurs électriques |
DE2401345A1 (de) * | 1974-01-09 | 1975-07-10 | Mannesmann Roehren Werke Ag | Zieh-streckverfahren zur herstellung langer rohre und vorrichtung zur durchfuehrung des verfahrens |
-
2001
- 2001-01-19 AU AU2001237229A patent/AU2001237229A1/en not_active Abandoned
- 2001-01-19 AT AT01909499T patent/ATE245499T1/de not_active IP Right Cessation
- 2001-01-19 DE DE50100414T patent/DE50100414D1/de not_active Expired - Lifetime
- 2001-01-19 WO PCT/DE2001/000227 patent/WO2001054839A1/de active IP Right Grant
- 2001-01-19 DE DE10190194T patent/DE10190194D2/de not_active Expired - Fee Related
- 2001-01-19 EP EP01909499A patent/EP1250199B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0154839A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1250199B1 (de) | 2003-07-23 |
ATE245499T1 (de) | 2003-08-15 |
AU2001237229A1 (en) | 2001-08-07 |
DE50100414D1 (de) | 2003-08-28 |
WO2001054839A1 (de) | 2001-08-02 |
DE10190194D2 (de) | 2003-02-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69317303T3 (de) | Selbststanzende nieten | |
DE2409668C2 (de) | Verfahren und Vorrichtung zum Verdichten eines Metallpulverpresslings aus Hauptkörper und Nabenteil | |
DE19626160C2 (de) | Zahnradherstellungsverfahren | |
WO2010037551A2 (de) | Verfahren und vorrichtung zur spanlosen herstellung eines aussengewindes auf hohlförmigen werkstücken aus metall | |
EP0347369A2 (de) | Verfahren und Vorrichtung zum hydraulischen Aufweiten von Hohlprofilen | |
EP2641673A2 (de) | Verfahren und Vorrichtung zur Herstellung eines Verbindungsabschnitts als Teil eines Werkzeugs | |
DE2027692B2 (de) | Quertransport-Warmgesenkschmiedepresse | |
DE1299275B (de) | Mehrstufenpresse zur Herstellung von Vielkantkopfbolzen | |
EP0111687B1 (de) | Verfahren zum Herstellen eines Kommutatorsegmentringes | |
DE102010011711B4 (de) | Verfahren und Vorrichtung zur spanlosen Herstellung von Verbindungs-, Befestigungs- oder Verschlusselementen aus Metall mit Außengewinde | |
DE4207964A1 (de) | Verfahren und vorrichtung zur herstellung von insbesondere als bits gestalteten schraubwerkzeugen in kreuzschlitzform oder dergleichen | |
EP2030701A1 (de) | Werkzeug und Verfahren zum Fertigen eines Hohlteils | |
EP1250199B1 (de) | Verfahren und umformwerkzeug zur zylinderrohrherstellung mittels fliesspressen | |
DE4032424C2 (de) | Verfahren und Vorrichtung zur Herstellung von gefalzten Rohren | |
DE102007019706B4 (de) | Verfahren zur spanlosen Herstellung eines Profils, insbesondere einer Verzahnung | |
DE69419206T2 (de) | Verfahren und Vorrichtung zum Herstellen eines metallischen Teils | |
DE1299855B (de) | Ziehverfahren fuer plattenartige Rohlinge aus einem druckplastifizierbaren Feststoff | |
DE3024744A1 (de) | Verfahren zum herstellen von felgen sowie drueckmaschine bzw. werkzeug fuer eine drueckmaschine, insbesondere zur durchfuehrung des verfahrens | |
DE10064376A1 (de) | Rohr-Umformverfahren und -Umformvorrichtung zum Wandaufdicken | |
DE19943805B4 (de) | Verfahren zum Entformen eines Stempels aus einem hohlen Gegenstand und Werkzeug zum Bearbeiten von Rillen an der Innenmantelfläche eines solchen hohlen Gegenstands | |
DE10349699B4 (de) | Verfahren und Vorrichtung zum Innenhochdruckumformen eines umfänglich geschlossenen Hohlprofils | |
EP0615794B1 (de) | Verfahren zur Herstellung einer Stopfenkammer beim Kaskadenziehen von Rohren und Vorrichtung zur Durchführung des Verfahrens | |
DE2826639C3 (de) | Fließpreßstempel zum Rückwärtsfließpressen eines ein- oder mehrfach stufenförmig abgesetzten Werkstückes | |
DE102019002187B4 (de) | Verfahren und Vorrichtung zum Herstellen eines Bauteils mit Gewinde | |
WO2010000233A1 (de) | Herstellungsverfahren von rohrmaterial |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
17P | Request for examination filed |
Effective date: 20020710 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20030723 Ref country code: FR 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: 20030723 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: 20030723 Ref country code: GB 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: 20030723 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: 20030723 Ref country code: TR 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: 20030723 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: 20030723 Ref country code: IE 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: 20030723 |
|
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: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 50100414 Country of ref document: DE Date of ref document: 20030828 Kind code of ref document: P |
|
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: 20031023 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: 20031023 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: 20031023 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20031103 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20031223 |
|
LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20030723 |
|
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: 20040119 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040119 |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20030723 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040131 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040131 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
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 |
|
26N | No opposition filed |
Effective date: 20040426 |
|
BERE | Be: lapsed |
Owner name: *SCHMITTERSYSCO G.M.B.H. Effective date: 20040131 |
|
EN | Fr: translation not filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050131 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050131 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20170327 Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50100414 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180801 |