US3859830A - Ring rolling mill - Google Patents

Ring rolling mill Download PDF

Info

Publication number
US3859830A
US3859830A US357777A US35777773A US3859830A US 3859830 A US3859830 A US 3859830A US 357777 A US357777 A US 357777A US 35777773 A US35777773 A US 35777773A US 3859830 A US3859830 A US 3859830A
Authority
US
United States
Prior art keywords
ring
rolls
centering
workpiece
improvement
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.)
Expired - Lifetime
Application number
US357777A
Other languages
English (en)
Inventor
Josef Jeuken
Gustav Vieregge
Wolfgang Massberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinstahl AG
Original Assignee
Rheinstahl AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rheinstahl AG filed Critical Rheinstahl AG
Application granted granted Critical
Publication of US3859830A publication Critical patent/US3859830A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length

Definitions

  • a ring rolling mill effects an increase in the diameter of ring-shaped workpieces by reduction in the distance between working rolls operating on opposite peripheries of the ring to decrease its radial thickness, with at least one working roll being driven, and includes at least one ring-engaging cnetering roll displaced in accordance with the increase in the ring diameter.
  • At least one feeler engages a periphery of the ring and measures the ring diameter, and is connected to control effecting displacement of the centering rolls in accordance with the measured ring diameter.
  • the centering rolls are rotatably mounted on pivoted levers, and the control includes a final control element for pivoting each lever.
  • the control may include hydraulic, mechanical or electrical control elements, and the feelers may be incorporated with the centering rolls.
  • Ring rolling mills of the type to which the present invention is directed usually are provided with two centering rolls arranged symmetrically with respect to the common plane of the working roll axes, and which are pressed into contact with the outer periphery of the ring being worked.
  • the centering rolls are provided to prevent lateral migration of the ring during the rolling process and to attain, as far as possible, an accurate circular form of the ring.
  • the pressure or bias on the centering rolls must be so adapted to the varying adjusting force resulting from the change in diameter of the ring that, on the one hand, the ring is not deformed by the centering rolls and, on the other hand, the ring does not flutter or perform other uncontrolled translatory oscillations because of insufficient bias or pressure on the centering rolls.
  • These centering rolls are usually mounted in pivoted levers pivotal about pivots fixed on the rolling mill frame. Due to the increasing ring diameter during working thereof, the displacement of the centering rolls occurs on paths determined by the arrangement of the pivoted levers.
  • the invention is directed to the problem of providing a ring rolling mill, of the above-mentioned type with at least one centering roll and preferably with two centering rolls, in such a way that the displacement of the centering rolls, caused by the increase in the diameter of the ring, is not effected by the adjusting force of the expanding ring or requires only a weak adjusting force, and that the problematic adaptation of the pressure of the centering rolls and of the adjusting force of the ring is eliminated or at least takes place in a region where it can be better controlled than heretofore, and where it is independent of the skill and attention of the operator.
  • the invention comprises one or more feelers determining the ring diameter and effecting, through a guidance control, a displacement of at least one or of all the centering rolls.
  • the guidance control preferably comprises respective measuring transformers associated with each feeler, an intensifier and at least one final control element for the centering rolls, so that the command variables derived from the measuring transformers determine clearly the value of the manipulated variable of each final control element, during the rolling process.
  • the feelers determining the ring diameter can be designed as contact-free elements or as wing contact elements, for example, in the form of a feeler roll whose contact pressure is low compared to the risk of ring deformation.
  • the solution to the problem, as provided in accordance with the invention is based on the finding that the disadvantages of the known embodiments are due to the linkage of cause and effect, because the adjusting force exerted by the ring effects, at the same time, the position of the centering rolls, and the latter, in turn, effect the guidance of the ring.
  • the invention eliminates this cause-effect linkage, with the above mentioned advantageous results.
  • the feeler or feelers for determining the instantaneous ring diameter, increasing with the advance of the working rolls toward each other, can be arranged at different points relative to the ring.
  • the measuring feeler is arranged in the common plane of the axes of the two working rollls acting on the ring.
  • feelers preferably are used and are arranged outside the plane defined by the axes of the working rolls acting on the ring, for example, in the form of at least two feeler rolls arranged on the outer periphery of the ring and preferably diametrically opposite each other.
  • a final control element receiving the signal from the measuring intensifier preferably is assigned to a first centering roll which, due to the coupling, effects simultaneously the displacement of the other centering rolls.
  • each centering roll can also be provided with a respective final control element receiving a signal from the measuring intensifier, and this is particularly advisable in the case of ring rolling mills for large ring diameters, or if different adjusting paths for the individual centering rolls are required for the introduction and removal of the workpiece from the side of the mill.
  • each centering roll has at least one yielding abutment arranged between the final control element and the centering roll, which permits a limited deviation from the nominal value of the centering roll bearings.
  • the abutment which can consist, for example, of a mechanical spring and of a hydraulic damping element acting thereafter, can be so formed that the ring is guided gently in a nominal position and is stabilized again in the centered position with an uncritical restoring force, when the position starts to change.
  • This embodiment of the ring rolling mill in accordance with the invention makes it possible to design the ring rolling mill particularly in such a way that the relation between ring diameter and associated positions of the centering rolls can be varied by a correcting element inluencing the output variable of the measuring intensifier, preferably according to a fixed program.
  • the program-controlled correcting element permits guidance of the ring by the centering rolls in such a way that the guidance follows optimally the changing conditions.
  • Ring rolling mills usually have two centering rolls which are arranged symmetrically to the common plane through the axes of the working rolls acting on the ring. On each of the two centering rolls, there can be arranged a feeler which determines a deviation from the nominal value of the position determined by the guidance control, and which restores the nominal value of the centering roll position through corresponding control means.
  • Known ring rolling mills frequently are equipped with two working rolls acting radially on the ring and two rolls acting axially on the ring, with at least one roll of each roll arrangement being driven.
  • the mutual adaptation of the drive is not easy, and there is particularly a risk that the known centering roll guidance will fail and the ring to be rolled will be subjected to the above mentioned adverse influences and become unusable. Accordingly, the invention is applicable with particular advantage to these ring rolling mills.
  • such a ring roll ing mill can be so designed that the measured values of the feelers, which determine the deviations, from the nominal value, of the positions of the two centering rolls as determined by the guidance control, are compared with each other in a measuring bridge, and that a mistuning of the bridge causes an unsymmetrical change on an abutment, counteracting the displacement of the centering rolls.
  • This can also be a hydraulic system with an adjustable throttle.
  • Another feature when added to the preceding features of the invention, provides that the nominal position of the centering rolls determined by the final control element of the guidance control can be restored by means of a control device for varying the relation between the speed of the driven rolls.
  • the invention also can be used with advantage by utilizing an additional guidance control for the direct displacement of the centering rolls through one or several feelers and final control elements, and which can be connected additionally during selected partial rolling periods or which can act alone.
  • the invention provides, for a ring rolling mill with at least two centering rolls, a feeler assigned to each centering roll and supported with limited yield relative to its final control element, with the intensifier influencing the final control element or control elements for the centering rolls in the sense of an equal displacement of all centering rolls corresponding to the increase of the ring diameter, but only if all the feelers are affected equally. In this way, a proper centering of the ring can be attained with little technical expenditures, and without the risk of a deformation of the ring.
  • An object of the invention is to provide an improved ring rolling mill.
  • Another object of the invention is to provide such a ring rolling mill including feelers detecting and measuring the ring diameter during rolling of the ring.
  • a further object of the invention is to provide such a ring rolling mill in which the disadvantages of prior art ring rolling mills are obviated.
  • FIG. 1 is a diagrammatic elevational view of a ring rolling mill embodying the invention, with a pair of radial working rolls and a centering roll;
  • FIG. 2 is a similar view illustrating the ring rolling mill with two centering rolls
  • FIG. 3 is a diagrammatic elevational view of a ring rolling mill with a pair of radial working rolls and a pair of rolls engaging opposite axial end surfaces of the ring;
  • FIG. 4 is a view similar to FIG. 3 but illustrating a different embodiment of the centering roll control.
  • FIG. 5 is an elevation view illustrating the mechanical constructional design of a ring rolling mill in accordance with the invention, with the control means being omitted;
  • FIG. 6 is a diagrammatic elevational view of another embodiment of a ring rolling mill in accordance with the invention and having two centering rolls.
  • the increase in the diameter of a ring 1, constituting a ring-shaped workpiece is effected by a reduction of the distance between the two working rolls 2 and 3, namely the driven disc roll 2 rotatably mounted in a fixed position in the rolling mill frame, which has not been shown, and of the undriven roll mandrel 3 which is adjustable with respect to the driven disc roll 2.
  • a centering roll 4 has the function of guiding ring 1, and can be swung, through a pivoted lever 5, about a pivot 6 fixedly mounted in the rolling mill frame.
  • the deflection of feeler 7 is the input variable for the guidance control of the centering roll.
  • This guidance control comprises a measuring transformer 8, a measuring intensifier 9 and a final control element 10, which latter acts on pivoted lever 5 and thus brings centering roll 4 into a position corresponding to the instantaneous ring diameter.
  • An actual value-nominal value comparison is possible by a measuring instrument 11, comprising a feeler and a measuring transformer, and which is connected over return line 12 to intensifier 9, so that the actual value can be correspondingly corrected.
  • ring 1 is guided by two centering rolls 4 whose respective pivoted levers 5 are adjusted by associated final control elements in accordance with the increase in the ring diameter.
  • a correcting element 13 the manipulated variable of the final control elements 10, associated with a certain deflection of feeler 7, and thus the position of centering rolls 4 can be varied arbitrarily or according to a fixed program.
  • a yielding abutment 14 in the form of a compression spring and which permits a limited deviation of the position of the centering roll from a nominal value.
  • the contact pressure of centering rolls 4 on the outer periphery of ring 1 can be adapted optimally and in timed dependence on the rigidity of ring 1, and thus other variables of state, by the cooperation of the program-controlled correcting element 13 and the yielding abutment 14.
  • the spring 14 on upper centering roll 4 generates a braking and restoring force which prevents fluttering of the ring and which effects the return of the ring into its normal position.
  • Two centering rolls 4 are alo arranged symmetrically to the common axial plane of the working rolls 2 and 3, and the pivots 6 of their respective levers 5 are mounted on the carriage (not shown) which also carries the pair of working rolls 2 and 3 and makes them displaceable toward the rolling mill frame.
  • the two feelers 7, determining the instantaneous ring radius or diameter, supply, through their respective measuring transformers 8, the input to intensifier 9 with the correcting element 13, which causes, in the final control element 10, the manipulated relative to set the position of centering rolls 14 in dependence on the radius or diameter of ring I.
  • the lower centering roll 4, as viewed in the drawing, is mechanically coupled with the upper centering roll 4 through a gearing 17.
  • the control device comprises a measuring bridge 19 whose adjusting motor 20, arranged in the zero branch, influences the speed governor 16 for the drive of the lower conical roll 15, so that the relation between the speeds of driven rolls 2 and 15 is varied.
  • the measuring feelers 18 are deflected unequally and the measuring bridge 19 is correspondingly mistuned.
  • the adjusting motor 20, in the zero branch of bridge 19, then causes such a change of the speed of the driven axial roll 15 that ring 1 returns into its centered position without the application of external forces.
  • Measuring rolls 4, with their feelers 18, then reassume a symmetrical position relative to the common plane of the axes of working rolls 2 and 3, and measuring bridge 19 is restored to the balanced state.
  • the above described inconveniences of known fourroll ring rolling mills are therefore positively prevented.
  • the success of the operation does not depend at all on the attention and skill of the operator, but can be attained reliably and readily under all customary conditrons.
  • the ring rollingrmill shown in FIG. 4 has the feature that the deflection of the feeler 7, caused by the increase of the ring diameter, controls final control ele ments 21 which are designed, at. the same time, as yielding controllable abutments. If the ring diameter increases during rolling in the centered position, the two centering rolls 4 undergo, by the manipulated variables in final control elements 21, caused by the deflection of feeler 7, a displacement corresponding to the guidance control, with the springs 14, as yielding abutments, causing, as mentioned above, an adapted pressure of the associated centering roll 4 through correcting element 13 of intensifier 9. If the ring migrates to one side, upwardly, for example, as viewed in FIG.
  • the additional spring force can be reduced by corresponding opening of the associated throttle 22 in such a way that it is controlled by the mistuning of measuring bridge 19 caused by upper feeler 18. In this way, a deformation of the ring can be positively prevented even in less rigid rings.
  • FIG. illustrates the mechanical construction of the ring rolling mill diagramatically illustrated in FIG. 4, with the control means, embodying the invention, for guiding the rolling mill and the ring to be rolled being omitted for the sake of clarity.
  • the rolling mill comprises the horizontal rolling stand 23 and the vertical edging stand 24.
  • the rolling mill frame 25 common to the two stands, there is fixedly mounted the kingpin 26, with the disc roll 2, and which is driven by a transmission 27 from an electric motor 28.
  • Roll mandrel 3 is supported, at its upper end, by the vertically displaceable frametype arm brackets 30.
  • the two centering rolls 4 can be turned through their pivoted levers 5 about the pivot 6, so that the centering rolls can be adjusted relative to the ring to be rolled, and which has not been shown.
  • Edging stand 24 is mounted on rolling mill frame 25 for horizontal displacement in slideways, and the displacement is effected by means of the double acting hydraulic cylinder 31.
  • the lower conical roll which is driven, through a fixed transmission 32, by an electric motor 33.
  • the transmission and the motor are so designed that the speed of the lower conical roll 15 can be so regulated that the circumferential speed of this conical roll can be varied infinitely over the entire length of its conical shell, to correspond to the rolling speed of disc roll 2.
  • Upper conical roll 15 is mounted for free rotation in a carriage 34 which can be adjusted in the axial direction of the ring to be rolled through a worm gear 36 driven by a motor 35 and a spindle drive 37.
  • carriage 34 can be lowered hydraulically, which has not been illustrated, to exert a vertical rolling force in the axial direction of the ring to be rolled.
  • a feeler in the form of a feeler roll 7.
  • the ring rolling mills shown in FIGS. 1, 2 and 3, and in FIG. 6, are designed, in their mechanical construction, generally in the same way, with differences in certain parts as mentioned above. For example, the vertical edging stand is naturally eliminated if the ring rolling mill does not have vertical rolls.
  • FIG. 6 illustrates a ring rolling mill having two centering rolls 4 which are yieldingly supported, through compression springs 14, on pivoted levers 5 pivotal about stationary pivots 6 mounted in the rolling mill frame which has not been shown in FIG. 6.
  • Pivoted levers 5 are coupled with each other through a gearing 17 so that their movement is symmetrical.
  • a final control element 10 comprising a piston articulated to pivoted lever 5 and a hydraulic cylinder secured on the rolling mill frame.
  • an intensifier 9 in the form of a magnetic valve which opens freely or through a throttle into a tank 38.
  • feelers 18 On pivoted levers 5, there are arranged feelers 18 in the form of limit switches which move through a certain distance under the action of compression springs 14 when centering rolls 4 are displaced relative to pivoted levers 5.
  • Feelers 18 are so connected with intensifier 9 that the intensifier opens the above-mentioned outlet from final control element 10 only when both feelers respond, but otherwise keeps the outlet closed.
  • FIG. 6 operates in a manner which will now be described.
  • ring 1 increases its diameter during the rolling process and remains centered in its normal position, the two centering rolls 4 are displaced relative to pivoted levers 5, compressing compression springs 14 through a certain distance, and both feelers 18 respond by actuating the limit switches.
  • Intensifier 9 thus permits the outflow of the hydraulic fluid displaced by the piston of the final control element l0, and the pivoted levers open in correspondence to the increase in the ring diameter. Since ring 1 has to transmit to centering rolls 4 only the force for compressing springs 14, for displacing the hydraulic fluid and for overcoming the mechanical friction, deformation of the ring, even with a low rigidity thereof, is positively prevented with a corresponding layout.
  • a ring rolling machine effecting an increase in the diameter of ring-shaped workpieces by reduction in the distance between two radial working rolls operating on respective opposite peripheries of the workpiece to decrease its radial thickness and the distance between two axial working rolls acting on respective opposite edge surfaces of the workpiece to decrease its axial thickness, with at least one working roll of each pair being driven and with at least one pair of rolls being mounted for displacement in the longitudinal direction of the ring rolling machine
  • the improvement comprising, in combination, at least one centering roll engageable with the periphery of the workpiece; respective actuating members associated with each centering roll and operable to displace the associated centering roll in accordance with the increasing diameter of the ringshaped workpiece; at least one first feeler detecting the instantaneous diameter of the workpiece and controlling said actuating members; a further actuating member operatively associated with at least one of said rolls; and a further feeler positioned outside the plane including the axes of the two radial working rolls, for detecting an unsymmetrical
  • each centering roll having a respective feeler mounted thereon for detecting the position of the associated centering roll; comparison signal producing means connected to said feelers and supplying a comparison signal derived from the values measured by said feelers to said further actuating member for returning the ring-shaped workpiece into its symmetrical posi' tion.
  • said comparison signal producing means comprises a measuring bridge connected to said feelers and producing a comparison signal responsive to electrical unbalance of said measuring bridge.
  • the improvement claimed in claim 10 including means coupling said two centering rolls to each other; a common actuating member operable to displace both centering rolls in accordance with the increasing diameter of the ringshaped workpiece; and means connecting at least one of said feelers, detecting the instantaneous diameter of the workpiece, with said common actuating member to automatically displace both centering rolls.
  • the improvement claimed in claim 1 including respective amplifiers, constituting correction members, connected between each first feeler and the associated actuating member; said amplifiers being operable to change the relation between the measured and the respective manipulated variables.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
US357777A 1972-05-09 1973-05-07 Ring rolling mill Expired - Lifetime US3859830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722222607 DE2222607A1 (de) 1972-05-09 1972-05-09 Ringwalzwerk

Publications (1)

Publication Number Publication Date
US3859830A true US3859830A (en) 1975-01-14

Family

ID=5844436

Family Applications (1)

Application Number Title Priority Date Filing Date
US357777A Expired - Lifetime US3859830A (en) 1972-05-09 1973-05-07 Ring rolling mill

Country Status (7)

Country Link
US (1) US3859830A (enrdf_load_stackoverflow)
JP (1) JPS4948544A (enrdf_load_stackoverflow)
DE (1) DE2222607A1 (enrdf_load_stackoverflow)
FR (1) FR2183986B1 (enrdf_load_stackoverflow)
GB (1) GB1426570A (enrdf_load_stackoverflow)
SE (1) SE408026B (enrdf_load_stackoverflow)
SU (1) SU936796A3 (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173134A (en) * 1978-02-24 1979-11-06 General Electric Company Apparatus and method for guiding a ring structure during the manufacture thereof
US4412438A (en) * 1981-07-24 1983-11-01 Gosudarstvenny Nauchnoissledovatelsky, Proektny I Konstruktorsky Institut Splavov I Obrabotki Tsvetnykh Metallov "Giprotsvetmetobrabotka" Pipe bending machine
WO1986004837A1 (en) * 1985-02-20 1986-08-28 Th. Kieserling & Albrecht, Gmbh & Co. Device for bending conical wires
US4711387A (en) * 1984-01-05 1987-12-08 Paton Boris E Method of producing pipes with crack arresters
US6070443A (en) * 1995-08-30 2000-06-06 Nsk Ltd. Apparatus for forming an annular member
KR100327129B1 (ko) * 1999-10-07 2002-03-13 이성재 레버형 링 로울링 장치
CN100391646C (zh) * 2006-07-18 2008-06-04 武汉理工大学 一种确定冷辗扩进给速度的方法
CN100404161C (zh) * 2006-09-01 2008-07-23 武汉理工大学 一种确定冷辗扩主轴转速的方法
CN101780477A (zh) * 2010-03-05 2010-07-21 武汉理工大学 立式轧环过程在线测量控制方法及装置
CN104438989A (zh) * 2014-09-26 2015-03-25 西安石油大学 一种GCr15钢薄壁深筒环件双向联合辗轧成形的方法
CN107790523A (zh) * 2017-09-14 2018-03-13 马鞍山市广源法兰环件有限公司 一种不锈钢环件内外圆成型装置
US11077481B2 (en) * 2015-12-03 2021-08-03 Hitachi Metals, Ltd. Method for manufacturing ring-rolled product
US11077482B2 (en) * 2017-09-08 2021-08-03 Schuler Pressen Gmbh Radial/axial ring rolling mill for rolling a ring
US11135642B2 (en) * 2015-12-03 2021-10-05 Hitachi Metals, Ltd. Method for manufacturing ring-rolled product
CN115194057A (zh) * 2022-09-14 2022-10-18 常州市金坛华鑫机械装备科技有限公司 智能轧机生产线
US11725698B1 (en) * 2022-05-20 2023-08-15 General Electric Renovables Espana, S.L. Method for manufacturing slewing ring bearing components having an integral stiffener

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1071481B (it) * 1975-09-23 1985-04-10 Union Carbide Corp Decolorazione con una resina scambiatrice cationica di una corrente di riciclo nella produzione di bisfenolo a
JPS53137860A (en) * 1977-05-09 1978-12-01 Mitsubishi Heavy Ind Ltd Rolling mill of ring
JPS561750U (enrdf_load_stackoverflow) * 1980-06-18 1981-01-09
JPS5788137A (en) * 1980-11-25 1982-06-01 Mitsubishi Chem Ind Ltd Preparation of bisphenol a
DE4405373C2 (de) * 1994-02-19 1997-12-04 Bad Dueben Profilwalzmaschinen Vorrichtung zum Rundwalzen von Ringen
RU2260492C1 (ru) * 2004-02-10 2005-09-20 Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения им. акад. Целикова" (ОАО АХК "ВНИИМЕТМАШ") Способ прокатки колец
DE202010014708U1 (de) * 2010-10-25 2011-01-20 C. Groene Consulting, Unip Lda Axial-/Radialringwalzwerk
CN107971436B (zh) * 2017-12-06 2020-07-03 西南铝业（集团）有限责任公司 一种轧环机轧制过程进给控制方法及系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US416797A (en) * 1889-12-10 Tire-rolling mill
US2925003A (en) * 1958-09-30 1960-02-16 Lombard Corp Ring mill
US3186202A (en) * 1961-12-22 1965-06-01 Wagner & Co Werkzeugmaschf Ring rolling machine
US3434322A (en) * 1964-01-10 1969-03-25 Torrington Co Method and apparatus for rolling bearing races
US3698218A (en) * 1968-07-31 1972-10-17 Banning Ag J Rolling mills
US3709011A (en) * 1969-12-05 1973-01-09 Banning Ag J Ring rolling apparatus with four rolls

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE325066C (de) * 1920-09-07 Paul Bertschy Rundrichtvorrichtung an Ringwalzen
GB553649A (en) * 1942-06-19 1943-05-31 Sydney Ernest Baker Improvements in or relating to rolling mills
US2636406A (en) * 1950-03-30 1953-04-28 Loewy Eng Co Ltd Rolling mill for rings
FR1036719A (fr) * 1950-03-30 1953-09-10 Loewy Eng Co Ltd Laminoir pour anneaux
US2776585A (en) * 1951-11-30 1957-01-08 Kendall Edgar Homer Ring forming mill
DE2222606C2 (de) * 1972-05-09 1985-06-27 Thyssen Industrie Ag, 4300 Essen Ringwalzwerk

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US416797A (en) * 1889-12-10 Tire-rolling mill
US2925003A (en) * 1958-09-30 1960-02-16 Lombard Corp Ring mill
US3186202A (en) * 1961-12-22 1965-06-01 Wagner & Co Werkzeugmaschf Ring rolling machine
US3434322A (en) * 1964-01-10 1969-03-25 Torrington Co Method and apparatus for rolling bearing races
US3698218A (en) * 1968-07-31 1972-10-17 Banning Ag J Rolling mills
US3709011A (en) * 1969-12-05 1973-01-09 Banning Ag J Ring rolling apparatus with four rolls

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173134A (en) * 1978-02-24 1979-11-06 General Electric Company Apparatus and method for guiding a ring structure during the manufacture thereof
US4412438A (en) * 1981-07-24 1983-11-01 Gosudarstvenny Nauchnoissledovatelsky, Proektny I Konstruktorsky Institut Splavov I Obrabotki Tsvetnykh Metallov "Giprotsvetmetobrabotka" Pipe bending machine
US4711387A (en) * 1984-01-05 1987-12-08 Paton Boris E Method of producing pipes with crack arresters
WO1986004837A1 (en) * 1985-02-20 1986-08-28 Th. Kieserling & Albrecht, Gmbh & Co. Device for bending conical wires
US4918958A (en) * 1985-02-20 1990-04-24 Kieserling & Albrecht Gmbh & Co. Device for bending conical wires
US6070443A (en) * 1995-08-30 2000-06-06 Nsk Ltd. Apparatus for forming an annular member
US6332260B1 (en) 1995-08-30 2001-12-25 Nsk Ltd. Apparatus and method of forming an annular member
KR100327129B1 (ko) * 1999-10-07 2002-03-13 이성재 레버형 링 로울링 장치
CN100391646C (zh) * 2006-07-18 2008-06-04 武汉理工大学 一种确定冷辗扩进给速度的方法
CN100404161C (zh) * 2006-09-01 2008-07-23 武汉理工大学 一种确定冷辗扩主轴转速的方法
CN101780477A (zh) * 2010-03-05 2010-07-21 武汉理工大学 立式轧环过程在线测量控制方法及装置
CN104438989A (zh) * 2014-09-26 2015-03-25 西安石油大学 一种GCr15钢薄壁深筒环件双向联合辗轧成形的方法
CN104438989B (zh) * 2014-09-26 2016-04-13 西安石油大学 一种GCr15钢薄壁深筒环件双向联合辗轧成形的方法
US11077481B2 (en) * 2015-12-03 2021-08-03 Hitachi Metals, Ltd. Method for manufacturing ring-rolled product
US11135642B2 (en) * 2015-12-03 2021-10-05 Hitachi Metals, Ltd. Method for manufacturing ring-rolled product
US11077482B2 (en) * 2017-09-08 2021-08-03 Schuler Pressen Gmbh Radial/axial ring rolling mill for rolling a ring
CN107790523A (zh) * 2017-09-14 2018-03-13 马鞍山市广源法兰环件有限公司 一种不锈钢环件内外圆成型装置
US11725698B1 (en) * 2022-05-20 2023-08-15 General Electric Renovables Espana, S.L. Method for manufacturing slewing ring bearing components having an integral stiffener
CN115194057A (zh) * 2022-09-14 2022-10-18 常州市金坛华鑫机械装备科技有限公司 智能轧机生产线
CN115194057B (zh) * 2022-09-14 2022-11-11 常州市金坛华鑫机械装备科技有限公司 智能轧机生产线

Also Published As

Publication number Publication date
SU936796A3 (ru) 1982-06-15
JPS4948544A (enrdf_load_stackoverflow) 1974-05-10
SE408026B (sv) 1979-05-14
DE2222607A1 (de) 1973-11-22
FR2183986B1 (enrdf_load_stackoverflow) 1978-06-16
FR2183986A1 (enrdf_load_stackoverflow) 1973-12-21
GB1426570A (en) 1976-03-03

Similar Documents

Publication Publication Date Title
US3859830A (en) Ring rolling mill
US3824820A (en) Ring rolling mill
US7258594B2 (en) Method and device for centerless cylindrical grinding
US4454739A (en) Ring rolling mill
US5415720A (en) Gluing apparatus for a corrugated board installation
US3698218A (en) Rolling mills
US3186202A (en) Ring rolling machine
CA1298725C (en) Calender with individually supported rolls and constant nip alignment
US4742651A (en) Control device for the processing pressure on lapping, honing and polishing machines
US5163631A (en) Apparatus for controlling contact pressure of a bobbin on a bearing roller in winding machine
JPS62220222A (ja) 金属シ−トの自動制御型ロ−ル機械
US5103596A (en) Method and apparatus for controlling cylinder grinding machines
US2680941A (en) Internal grinding machine
US4380259A (en) Veneer lathe apparatus and method using independently adjustable powered back-up roll
US5882247A (en) Machine for grinding of optical glasses
EP1655085B1 (en) Die cushion mechanism, and apparatus and method for controlling the same
CN208575136U (zh) 一种高精弧度滚弯设备
US4324073A (en) Process for automatic feed of steady jaws
CA2140200C (en) Method and apparatus for controlling veneer lathe knife clearance angle
JPS61216808A (ja) ユニバ−サル圧延機のロ−ルを自動的に調整する方法
US3943746A (en) Automatic aligning process and aligning press having a single aligning station
US2307191A (en) Apparatus for rolling internally flanged annuli
US6332260B1 (en) Apparatus and method of forming an annular member
US3421560A (en) Back-up rolls for veneer lathes
US2680939A (en) Internal grinding machine