US3611771A - Method for rolling disks and a disk rolling mill for the practice of the method - Google Patents

Method for rolling disks and a disk rolling mill for the practice of the method Download PDF

Info

Publication number
US3611771A
US3611771A US740873A US3611771DA US3611771A US 3611771 A US3611771 A US 3611771A US 740873 A US740873 A US 740873A US 3611771D A US3611771D A US 3611771DA US 3611771 A US3611771 A US 3611771A
Authority
US
United States
Prior art keywords
disk
rolling
roll
rolls
blank
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
US740873A
Other languages
English (en)
Inventor
Otto Ulrych
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 WAGNER WERKZEUGMASC
Original Assignee
RHEINSTAHL WAGNER WERKZEUGMASC
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 WAGNER WERKZEUGMASC filed Critical RHEINSTAHL WAGNER WERKZEUGMASC
Application granted granted Critical
Publication of US3611771A publication Critical patent/US3611771A/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
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/025—Special design or construction with rolling or wobbling dies
    • 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
    • B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels

Definitions

  • a previously formed blank especially a forged blank, which is given the desired final shape on a disk rolling mill by the action of a plurality of rolls which modify the diameter and thickness of the blank.
  • disk rolling mills for rolling previously forged blanks has rollers which are short in proportion to the disk diameter, usually tapered, and arranged in pairs, and which are urged against one another during the rolling in order to reduce the thickness of the blank and increase its diameter.
  • the rolls are ifiISt applied in the vicinity of the hub of the disk and, for the purpose of rolling the disk web, they are displaced radially outward and made to approach one another axially. Additional rolls or pairs of rolls are provided for the rolling and shaping of the rim and tread of the disk.
  • dis-k rolling mills are used in which the pair of rolls acting on the disk from both sides are short in proportion to the disk diameter and can be brought to bear against one another,
  • a disk rolling mill has become known in which the one roll contains a complete negative of the one side of the disk to be rolled, While the negative of the other side is created on the mantle surface of an obtuseangle cone forming the counter-roll.
  • the axes of the two rolls are set at an angle to one another.
  • One roll is freely rotatable and the other is driven and they can be brought to bear against one another.
  • the rolling process is performed as follows: a socket punched in one face of the disk is placed on a stud in the non-conical roll; the rolls are then rotated and the gap between them is narrowed, increasing the diameter of the blank and rolling it into the negative of the non-conical roll.
  • Another object of this invention is to provide a novel rolling mill.
  • the invention makes possible the economical manufacture of thin disks having special cross sections, the shape given to one face being able to differ from that given to the other. It offers special advantages in the production of axially symmetrical, discoidal bodies from highly heat-resistant, expensive materials that are difficult to shape, such as those used, for example, in engines for aircraft and spacecraft.
  • the forming of such parts in presses would entail very great press forces and consequently high machine costs, and forming them by machining alone would be uneconomical on account of the poor machinability of the materials and the excessive waste.
  • the advantages of the invention are due to the fact that, on the one hand, the workpiece contacts the two forming rolls only in the area of a roll gap, so that the heat losses are slight, and, on the other hand, the roll gap extends over the entire disk radius, thereby eliminating the shifting of the roll gap radially with reference to the center of the disk, which renders any special fashioning of the disk impossible.
  • a discoidal blank heated to forging temperature is centered on one patterned roll, and is first partially gripped between this one roll, which bears on its obtusely conical mantle surface the pattern that is to be rolled into the one face of the disk, and the other roll, which bears on its obtusely conical surface the pattern that is to be rolled into the other face of the disk, the axis of the latter roll being at an angle to the axis of the former, while the rolls are rotated and the distance between them is reduced, and then the blank is shaped so as to fill the roll gap resulting from the pattern and the distance between the rolls.
  • the outside diameter of the disk be limited by a boundary surface or rim collar rising above the patterned mantle surface of the roll and flaring outward toward the other roll.
  • the invention proposes that the discoidal blank have a center hole punched in it and that it be centered by the engagement of this hole With a centering stud provided on at least one of the rolls.
  • the discoidal blank is to have a central stud, according to the invention, and is to be centered by the engagement of this stud in a center recess in the roll.
  • a simple blank manufacture and a reliable centering of the blank can be achieved by making the central stud of the blank and the recess in the roll cup-shaped.
  • the use of punched or unpunched blanks having an outside diameter equal to that of the punched disk is made possible by the invention owing to the fact that the discoidal blank is centered by its outside diameter in the boundary surface of the roll.
  • the rolling be performed successively between a series of pairs of rolls, each pair bringing the disk closer to the desired final shape, and the last pair having a pattern corresponding to the final shape.
  • the invention proposes, as a disk rolling mill for the practice of the method of the invention, a bottom roll having a perpendicular shaft and an upper roll having an axis at an angle to the perpendicular.
  • An especially simple construction of the disk rolling mill can be achieved if, according to a further proposal, both rolls can be driven and the upper roll can be brought to bear against the lower one.
  • the apex angles of the patterned mantle surfaces of both rolls are to be equal and as large as possible, preferably about 170.
  • a roll gap that is parallel with reference to the theoretical, unpatterned mantle surfaces is produced by tilting the axis of the upper roll away from the perpendicular by an angle amounting to half of the difference between the sum of the apex angles of the mantle surface of both rolls and 360.
  • the direction of application of the upper roll against the lower be inclined from the perpendicular so that the angle of inclination amounts to half of the difference between the apex angle of the lower roll mantle surface and 180, being thus perpendicular to the roll gap, and so that the intersection of the two roll axes lies always in the center plane of the rolled disk.
  • FIG. 1 shows a longitudinal section through a disk rolling mill with a disk in the final phase of the rolling
  • FIG. 5 shows tolls of the disk rolling mill in the rolling position with a disk rolled from the blank of FIG. 4;
  • FIG. 6 shows a forged, unperforated blank having a hemispherical centering boss
  • FIG. 7 shows tools of the disk rolling mill in the rolling position with a disk rolled from the blank of FIG. 6;
  • FIG. 9 shows tools of the disk rolling mill in the rolling position roughing the blank of FIG. 8;
  • FIG. 11 shows tools of the disk rolling mill in the rolling position with a disk rolled from the roughed blank of FIG. 10.
  • Motor 18 runs synchronously with the motor driving shaft 8, as a result of being powered by a common Ward-Leonard system.
  • Two plungers 19 are fastened to the top of the slide 11.
  • the plungers 19 are held in two double-acting hydraulic cylinders 20 fastened to the upright 9.
  • the large upper piston faces and the small lower piston faces of the plungers 19 can be driven by hydraulic fluid by means of a hydraulic control 21, which is not shown in detail.
  • the plungers 19 and hydraulic cylinders 20 are so arranged that the line of application of their resultant force lies in the plane passing through the perpendicular shaft 6 and the inclined shaft 16, is inclined 3.5 from the vertical, and runs approximately through the centroid of the rolling zone which is to be explained later.
  • a lower roll 23, 23', 23" and 23", respectively, is fastened to a tool plate 22 of the bottom roll holder 2 by known means.
  • Its top side 24 (FIG. 7) is of conical construction with an apex angle of 173 and bears the pattern that is to be rolled into the bottom side of a disk 26, 26, 26" and 26", respectively.
  • the bottom rolls 23, 23', 23 and 23" are each shaped according to the desired disk design.
  • the bottom roll 23 (FIG. 7) has a central hemispherical recess 27.
  • the bottom rolls 23, 23" and 23" (FIGS. 5, 9, 11) are each provided with a centering pin 23, 28", 28 fastened, by means not shown, in a center bore.
  • the centering pins have a central cup 29 and have a taper at the end that projects from the bottom roll.
  • a rim collar 32 is removably mounted on a tapered portion 30 and a flange 31 on the outer periphcry of the bottom rolls 23, 23', 23" and 23', and projects above the bottom roll.
  • the inner surface 33 of the rim collar 32 flares comically in'the portion that is free of the bottom roll, at an angle corresponding to the direction of the guideway 10.
  • a top roll 35, 35', 35", 35', respectively, is fastened removably to a tool plate 34 of the upper roll holder 12 by means which are not shown.
  • a bottom face 36 (FIG. 7) of the top roll is of conical shape with an apex angle 37 of 173, and it bears the pattern that is to be rolled into the top side of disk 26, 26, 26" and 26", respectively.
  • the upper rolls 35, 35" and 35" are provided with a center bore into which a centering pin 38, 38" and 38", respectively, of the same design as the centering pin 28, 28" and 28", respectively, is inserted and fastened.
  • a roll gap 39 At the point of the shortest distance between the bottom roll and the top ,roll is a roll gap 39.
  • a rolling zone is formed here, which in the peripheral direction of the roll has the shape of a narrow segment or sector of a circle. Approximately through the centroid of this rolling zone runs the line of the application of the resultant force of the plunger 19 driven by hydraulic fluid, as already mentioned above.
  • a forged and punched blank 40 from which disk 26 is made is shown in FIG. 4.
  • a disk is produced bearing the pattern shown in 'FIG. 5.
  • the point of division of flow in this disk i.e., the point at which the zone in which the material flows radially inward during the rolling meets the zone in which the material flows radially outward during the rolling, is identified by a line 41.
  • the forged blank 40' which is provided with a hemispherical boss 42 in the center as shown in FIG. 6, will be made into the disk 26' by rolling between the rolls 23' and 35 bearing the pattern shown in FIG. 7.
  • the forged and punched blank 40" of FIG. 8 is roughed between the rolls 23" and 35" of FIG. 9 to a disk 26" which is finish-rolled between the rolls 23" and 35" of FIG. 11 to form a disk 26".
  • a forged and punched blank 40 This blank is of such dimensions and shape that, on the one hand, a minimum of forming under the forging press is required, and on the other hand the distribution of material in it comes as close as possible to the material distribution in the rolled disk 26, taking into consideration the point of division of flow 41 established by the area of maximum material accumulation in the rolled disk.
  • the blank 40 is punched to fit the centering pin 28.
  • the slide 11 of the rolling mill is in its upper end position. Rolls 23 and 35 are standing still.
  • the blank 40, heated to forging temperature, is laid on the lower roll 23 and centered by its hole on the centering pin 28.
  • the blank lies horizontally.
  • the rolling speed i.e., the rotatory speed of the rolls, and the rolling force, i.e., the force applied to plunger 19, are selected on the basis of the working characteristics of the material being rolled. In the case of hard-towork, highly heat-resistant materials, for which the method and apparatus are particularly well suited, a very slight reduction per revolution is made, at correspondingly high rolling speed.
  • the rolls are stopped, and slide 111 is raised back to its upper terminal position by applying hydraulic power to the lower piston faces of plunger 19.
  • Rim ring 32 is lifted from the bottom roll 23', whereupon the entire periphery of the rolled disk 26 will be caught in the rim ring and the disk will be lifted with the ring out of the rolling mill.
  • the disk can be removed from the rim ring for further transportation, merely by inverting the ring or by some other such operation.
  • FIGS. 8 to 11 An example of two-stage rolling is shown in FIGS. 8 to 11.
  • a forged, punched blank 40 This cylindrical perforation in blank 40" has a relatively large diameter to correspond to the material distribution in the finished disk 26".
  • the blank is laid on the lower roll 23 and centered thereon by a centering pin 28".
  • blank 40" is rolled between rolls 23" and 35 in the manner described previously, to form a disk 26". Since disk 26" at the end of the rolling already has the outside diameter of the finishedrolled disk 26", the centering of disk 26" on bottom roll 23" in the second rolling stage is performed by means of the inside surface 33 of the rim ring 32.
  • the rolling process in the second stage reduces the inside diameter of the disk to the size determined by centering pins 28" and 38".
  • a blank 40' is used which has a hemispherical centering boss 42, as shown in 'FIG. 6.
  • this blank is laid on the bottom roll 23' it is centered in the hemispherical recess 27 in the bottom roll. Otherwise the rolling process is the same as described before.
  • titanium is perculiarly well-adapted to use and to shaping using the device and method of this invention.
  • the disk should be rolled at a temperature of about 900 to 1040 0., preferably at least about 950 C. since it is only between these temperatures that titanium can be economically rolled. Further it is preferred that the roll gap widen in a radially outward direction, whereby to ensure the flow of material radially outward during rolling of the titanium disks.
  • Method of producing contoured disks which comprises heating a titanium disk blank to 900 to 1,040 O; inserting such hot disk blank between two contoured rolls, which rolls have disk directed contoured conical surfaces with axes disposed at an angle to each other; and turning said rolls for a time sufficient and with a force sufficient to impart said contour to said disk blank.
  • Method as claimed in claim 1 including forming a centrally disposed recess in said disk blank and mounting said disk blank in said mill such that said recess mates with a projection from said working face.
  • Method as claimed in claim 1 including forming a centrally disposed projection on said disk blank and mounting said disk blank in said mill such that said projection mates with a recess in said working face.
  • Method as claimed in claim 1 including urging said working faces together during operation of said rolls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US740873A 1967-07-01 1968-06-28 Method for rolling disks and a disk rolling mill for the practice of the method Expired - Lifetime US3611771A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER0046380 1967-07-01

Publications (1)

Publication Number Publication Date
US3611771A true US3611771A (en) 1971-10-12

Family

ID=7407996

Family Applications (1)

Application Number Title Priority Date Filing Date
US740873A Expired - Lifetime US3611771A (en) 1967-07-01 1968-06-28 Method for rolling disks and a disk rolling mill for the practice of the method

Country Status (2)

Country Link
US (1) US3611771A (enrdf_load_stackoverflow)
FR (1) FR1560758A (enrdf_load_stackoverflow)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084419A (en) * 1976-03-19 1978-04-18 Thyssen Industrie Ag Method for manufacturing annular metal workpieces
EP0014570A1 (en) * 1979-02-01 1980-08-20 The City University Rotary forging machine
DE3906763A1 (de) * 1989-03-03 1990-09-06 Thyssen Industrie Radial-gesenkwalzmaschine
US4996859A (en) * 1989-10-23 1991-03-05 A. J. Rose Manufacturing Company Method and apparatus for roll forming metal
RU2127643C1 (ru) * 1997-07-29 1999-03-20 Закрытое акционерное общество Научно-производственная фирма "Имекс" Способ изготовления металлопроката
RU2130355C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Заготовка бещекова для торсионной сферодинамической обработки материалов
RU2130357C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Устройство бещекова для торсионной сферодинамической обработки материалов
RU2130353C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Способ торсионного сферодинамического формообразования материалов
RU2130354C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Способ бещекова торсионной сферодинамической обработки материалов
RU2130356C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Устройство для торсионного сферодинамического формообразования материалов
US5946959A (en) * 1995-05-30 1999-09-07 Wdb Ringwalztechnik Gmbh Process for producing annular workpieces from metal with a profiled cross section and a rolling facility for carrying out the method
RU2216425C2 (ru) * 2001-11-12 2003-11-20 Бещеков Владимир Глебович Способ сферодинамической обработки материалов и устройство для его осуществления
RU2220807C2 (ru) * 2001-10-12 2004-01-10 Федеральное государственное унитарное предприятие "НПО ТЕХНОМАШ" Способ сферодинамической обработки материалов
RU2224618C2 (ru) * 2001-10-12 2004-02-27 Федеральное государственное унитарное предприятие "НПО ТЕХНОМАШ" Устройство для сферодинамической обработки материалов
RU2282519C1 (ru) * 2004-12-24 2006-08-27 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Способ сферодинамической нанорезонансной обработки материалов
RU2285574C1 (ru) * 2005-03-17 2006-10-20 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Способ сферодинамической нанорезонансной обработки материалов
RU2287395C1 (ru) * 2005-03-17 2006-11-20 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Способ сферодинамической нанорезонансной обработки материалов
RU2296644C1 (ru) * 2005-07-13 2007-04-10 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Способ сферодинамической обработки материалов
RU2455100C1 (ru) * 2010-11-26 2012-07-10 Федеральное Государственное Унитарное Предприятие "Научно-Производственное Объединение "Техномаш" Способ сферодинамического пластифицирования материалов
RU2648429C1 (ru) * 2017-01-09 2018-03-26 Закрытое акционерное общество "Научно-производственное объединение "Имекс" Способ изготовления осесимметричной детали типа диска
CN109127975A (zh) * 2018-10-17 2019-01-04 重庆文理学院 一种钛合金回转件及其制备方法
RU2790332C1 (ru) * 2018-06-22 2023-02-16 Акционерное общество "Алтайский научно-исследовательский институт технологии машиностроения" Станок раскатки фаски на дисках

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3202254C2 (de) * 1982-01-25 1986-02-20 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Verfahren und Vorrichtung zum Herstellen einer Zahnstange

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084419A (en) * 1976-03-19 1978-04-18 Thyssen Industrie Ag Method for manufacturing annular metal workpieces
EP0014570A1 (en) * 1979-02-01 1980-08-20 The City University Rotary forging machine
DE3906763A1 (de) * 1989-03-03 1990-09-06 Thyssen Industrie Radial-gesenkwalzmaschine
US4996859A (en) * 1989-10-23 1991-03-05 A. J. Rose Manufacturing Company Method and apparatus for roll forming metal
US5946959A (en) * 1995-05-30 1999-09-07 Wdb Ringwalztechnik Gmbh Process for producing annular workpieces from metal with a profiled cross section and a rolling facility for carrying out the method
RU2127643C1 (ru) * 1997-07-29 1999-03-20 Закрытое акционерное общество Научно-производственная фирма "Имекс" Способ изготовления металлопроката
RU2130355C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Заготовка бещекова для торсионной сферодинамической обработки материалов
RU2130353C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Способ торсионного сферодинамического формообразования материалов
RU2130354C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Способ бещекова торсионной сферодинамической обработки материалов
RU2130356C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Устройство для торсионного сферодинамического формообразования материалов
RU2130357C1 (ru) * 1998-06-02 1999-05-20 Бещеков Владимир Глебович Устройство бещекова для торсионной сферодинамической обработки материалов
RU2220807C2 (ru) * 2001-10-12 2004-01-10 Федеральное государственное унитарное предприятие "НПО ТЕХНОМАШ" Способ сферодинамической обработки материалов
RU2224618C2 (ru) * 2001-10-12 2004-02-27 Федеральное государственное унитарное предприятие "НПО ТЕХНОМАШ" Устройство для сферодинамической обработки материалов
RU2216425C2 (ru) * 2001-11-12 2003-11-20 Бещеков Владимир Глебович Способ сферодинамической обработки материалов и устройство для его осуществления
RU2282519C1 (ru) * 2004-12-24 2006-08-27 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Способ сферодинамической нанорезонансной обработки материалов
RU2285574C1 (ru) * 2005-03-17 2006-10-20 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Способ сферодинамической нанорезонансной обработки материалов
RU2287395C1 (ru) * 2005-03-17 2006-11-20 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Способ сферодинамической нанорезонансной обработки материалов
RU2296644C1 (ru) * 2005-07-13 2007-04-10 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Способ сферодинамической обработки материалов
RU2455100C1 (ru) * 2010-11-26 2012-07-10 Федеральное Государственное Унитарное Предприятие "Научно-Производственное Объединение "Техномаш" Способ сферодинамического пластифицирования материалов
RU2648429C1 (ru) * 2017-01-09 2018-03-26 Закрытое акционерное общество "Научно-производственное объединение "Имекс" Способ изготовления осесимметричной детали типа диска
RU2790332C1 (ru) * 2018-06-22 2023-02-16 Акционерное общество "Алтайский научно-исследовательский институт технологии машиностроения" Станок раскатки фаски на дисках
CN109127975A (zh) * 2018-10-17 2019-01-04 重庆文理学院 一种钛合金回转件及其制备方法
CN109127975B (zh) * 2018-10-17 2020-05-08 重庆文理学院 一种钛合金回转件及其制备方法

Also Published As

Publication number Publication date
FR1560758A (enrdf_load_stackoverflow) 1969-03-21

Similar Documents

Publication Publication Date Title
US3611771A (en) Method for rolling disks and a disk rolling mill for the practice of the method
US4084419A (en) Method for manufacturing annular metal workpieces
US6711817B2 (en) Hypoid ring gear for differentials and method of producing the same
US4055976A (en) Method of roller spinning cup-shaped metal blanks and roller construction therefor
US3823591A (en) Method and apparatus for producing dish-shaped articles
US3745851A (en) Power toothed transmission device
US3654790A (en) Means for making pulleys
CN104907474A (zh) 一种铝合金车轮锻造成形工艺
EP0278306A2 (en) Method for producing a family of forged ring rolling preforms and forging die therefor
US3803890A (en) Rolling machines
US3461701A (en) Rolling of cylindrical components having non-planar ends
US4996859A (en) Method and apparatus for roll forming metal
US3813909A (en) Methods of extruding helical gear blanks
US3638471A (en) Heavy press forging apparatus and method
CN101966553A (zh) 中小型汽车后桥从动齿轮的制造方法
US4722211A (en) Method of forming hollow parts
US3831414A (en) Means for making pulleys
US3857147A (en) Method of manufacturing bearing races by rolling
US3828628A (en) Methods of extruding helical gear blanks
CN86108713A (zh) 多点径向辗环工艺
US6158261A (en) Mill for producing axially symmetric parts
US2512484A (en) Method of forging railway axles
US1377618A (en) dieter
US965032A (en) Manufacture of wheels.
US3853310A (en) Taper leaf spring blank