US3546912A - Rolling frame for rolling mill of the step-back type - Google Patents

Rolling frame for rolling mill of the step-back type Download PDF

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Publication number
US3546912A
US3546912A US714972A US3546912DA US3546912A US 3546912 A US3546912 A US 3546912A US 714972 A US714972 A US 714972A US 3546912D A US3546912D A US 3546912DA US 3546912 A US3546912 A US 3546912A
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US
United States
Prior art keywords
rolling
roll
legs
frame
rolling frame
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
US714972A
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English (en)
Inventor
Horst Stinnertz
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.)
McKay Machine Co
United Engineering Inc
Original Assignee
McKay Machine Co
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
Priority claimed from DE1967M0058374 external-priority patent/DE1962013U/de
Application filed by McKay Machine Co filed Critical McKay Machine Co
Application granted granted Critical
Publication of US3546912A publication Critical patent/US3546912A/en
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP.OF OH
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OH.
Anticipated expiration legal-status Critical
Assigned to UNITED ENGINEERING ROLLING MILLS, INC. reassignment UNITED ENGINEERING ROLLING MILLS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WEAN INCORPORATED
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/005—Pilgrim-step tube-rolling, i.e. pilger mills with reciprocating stand, e.g. driving the stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/12—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by vertically displacing

Definitions

  • a reciprocable rolling frame for a cold rolling pilger mill has two U-shaped roll housings, each open on top though closed by a removable traverse that rests in hous- 1ng grooves.
  • the invention relates to rolling frames for cold rolling mills of the step-back or pilger type, and relates more particularly to such rolling frames in connection with which annular roll collars are used.
  • Rolling frames for pilger cold rolling mills of conventionl construction have roll bodies of semicircular section, which are removably connected with the roll axle.
  • the operator will remove the roll body from the roll axle, and remove the roll body without need to remove the roll axle from the rolling frame.
  • the exchange of the roll bodies can be accomplished in a relatively short time.
  • annular roll collars rather than the aforementioned roll bodies.
  • the collars have the advantage that for the working of the roll pass there is available the entire circumference of the roll, and is no longer restricted to only one-half of the roll.
  • the mounting of the collar onto the roll axle may be accomplished by shrinking.
  • the axle and the shrunk collar form a unit that cannot be separated for interchanging of the roll either due to the need for a different diameter or due to wear.
  • the entire aggregate, namely the roll axle with the collar and the necessary installation pieces must be removed in its entirety and be exchanged against a new aggregate of this type which has been prepared in advance in the shop.
  • the first of these methods namely the lateral removal, is not well suited for cold rolling pilger mill rolling frames, as these frames, in contrast to the conventional stationary rolling frames, are reciprocably movable and due to the stationary racks for the reciprocal drive are not readily accessible from the side.
  • the instant invention therefore utilizes the second of the foregoing methods, namely to remove the aggregate upwardly, and providing for a rolling frame that is open on top.
  • Rolling frames of the stationary type have in the past been constructed with an open top through which the rolling aggregate could be removed; they have been built in the form of a U-shape with an open top, and have been provided during operation with a removable or tiltable lid for closing the open top.
  • the invention consists in the novel construction, arrangement and combination of various devices, elements and parts, as set forth in the claims hereof, one embodiment of the same being illustrated in the accompanylng drawings and described in the specification.
  • the aforementioned drawbacks of the U-shaped rolling frames of the prior art are eliminated in accordance with the invention by substituting for the heavy and unwieldy lid a movable traverse.
  • the traverses render unnecessary the bolts and screws of the rolling frames of the prior art, which bOlts as previously pointed out had been dimensioned to take up the rolling pressure; furthermore, the traverse has small dimensions and hence is so light that in most cases it can be moved by hand, thereby reducing the overall time required for an interchange of roll passes.
  • FIG. 1 is a fragmentary side elevational view of a rolling frame for a cold rolling pilger mill in accordance with the instant invention showing the traverse in place and the tiltable threaded bolt in active traverselocking position in solid lines; and, respectively, showing the bolt in traverse-releasing position in broken lines; and
  • FIG. 2 is a fragmentary extended front elevational view thereof, partly in section.
  • a rolling frame that includes two U-shaped roll housing 1.
  • Each roll housing 1 includes two upright legs 1.1, 1.2 (FIG. 1) that are spaced apart near the top and define a passage permitting the removal of the roll aggregate.
  • a removable traverse 2 bridges the open top and has end portions 2.2 each closely fitting within respective grooves 2.3 formed in respective housing legs 1.1, 1.2.
  • a tiltable, threaded bolt 3 is pivoted to the upper part of respective housing legs 1.2 and may be moved between the active station shown in solid lines in FIG. 1 and the inactive station shOWn in phantom lines therein.
  • each bolt 3 is disposed in an upwardly facing slot 3.1 at the top of a respective housing leg 1.1 and a nut 4 on each bolt, through an underlying washer 4.1, is seated against a respective housing leg 1.1.
  • a bolt 3 suitably tensioned by rotation of its nut 4
  • the upper ends of the associated housing legs will be held against separation.
  • an intermediate portion thereof will be seated within a tapered, upwardly facing groove 2.3 (FIG. 3) formed in its traverse 2 to retain the latter assembled with its housing legs.
  • the roll aggregate includes the two roll axles 5, the collars 6 and the installation pieces 7 for the journalling of the axles in the housings 1.
  • the operation for the disassembly is as follows: After the nuts 4 have been loosened on the thread of the bolts 3, the bolts 3 are moved from the active station in solid lines in FIG. 1 to the inactive station shown in brOken lines in FIG. 1. Thereafter, the traverses 2 are removed laterally by sliding them laterally out of the grooves, as indicated in FIG. 2 by the arrows 8; lastly, the roll aggregates which include the axles 5, the collars 6 and the installation pieces 7, are removed upwardly, as indicated by the arrow 9 in FIG. 2.
  • the new roll aggregates thereafter are put into the housings 1, and the operation is proceeded with, in reverse order.
  • a rolling mill the combination of a pair of laterally spaced housing portions, each having a pair of legs defining therebetween an outwardly directed opening, said pairs of legs being similarly disposed so that said openings are in alignment, a roll assembly crosswise of said housing portions and with spaced bearings di'sposed within respective openings, said roll assembly being movable outwardly of said openings by movement thereof in a direction transverse to its axis, a bridge member across each of said pair of legs in position so that a portion thereof is directed inwardly of a respective opening to bear against a respective roll assembly bearing and thereby maintain the roll assembly in operative position within said housing portions, each bridge member having opposite ends removably connected to respective pair of legs, and a tension member spanning each pair of legs outwardly of a respective bridge member and arranged to restrict separation of said legs and to maintain the connection of opposite ends of a respective bridge member with respective legs.
  • a pair of laterally spaced housing portions each having a pair of legs defining therebetween an outwardly directed opening, said pairs of legs being similarly disposed so that said openings are in alignment, a roll assembly crosswise of said housing portions and with spaced bearings disposed within respective openings, said roll assembly being movable outwardly of said spaced openings by movement in a direction transverse to its axis, a bridge member across each of said pair of legs in position so that a portion thereof is directed inwardly of a respective opening to bear against a respective roll assembly bearing and thereby maintain the roll assembly in operative position within said housing portions, each bridge member having its opposite ends fitting within recesses in respective pair of legs, and a tension member spanning each pair of legs outwardly of a respective bridge member and arranged to restrict separation of said legs and thereby prevent removal of said opposite ends of said bridge member from the leg recesses.
  • each bridge member is assembleable and disassembleable with respective leg recesses solely by movement in a direction parallel to the axis of said roll assembly.
  • each tension member has one end pivoted to one housing portion and its other end fitting within an open slot in the other housig portion whereby said tension member may be swung about said pivot to and from operative position, and wherein the other end of said tension member is threaded and receives a nut which when threaded in predetermined manner forcibly bears against an outer surface of said other housing portion adjacent said open slot.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Crushing And Grinding (AREA)
US714972A 1967-03-30 1968-03-21 Rolling frame for rolling mill of the step-back type Expired - Lifetime US3546912A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1967M0058374 DE1962013U (de) 1967-03-30 1967-03-30 Walzgeruest fuer kaltpilgermaschinen.
DEM0073734 1967-04-21

Publications (1)

Publication Number Publication Date
US3546912A true US3546912A (en) 1970-12-15

Family

ID=40512445

Family Applications (1)

Application Number Title Priority Date Filing Date
US714972A Expired - Lifetime US3546912A (en) 1967-03-30 1968-03-21 Rolling frame for rolling mill of the step-back type

Country Status (4)

Country Link
US (1) US3546912A (de)
DE (1) DE1602109A1 (de)
FR (1) FR1559326A (de)
GB (1) GB1158814A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037451A (en) * 1976-05-04 1977-07-26 Aetna-Standard Engineering Company Piercing and reeling mill construction with removable cap
US5195345A (en) * 1989-07-04 1993-03-23 Sms Schloemann Siemag Aktiengesellschaft Reversing two-high section rolling mill stand

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU806176A1 (ru) * 1977-10-19 1981-02-23 Московский Ордена Трудового Красногознамени Институт Стали И Сплавов Рабоча клеть стана холоднойпРОКАТКи ТРуб
FR2510913A1 (fr) * 1981-08-06 1983-02-11 Vallourec Dispositif de changement d'outillage de laminoir a froid a pas de pelerin
EP0607541B1 (de) * 1993-01-18 1996-01-17 Paul Troester Maschinenfabrik Kalander und Anlage zum Kalandrieren

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US355390A (en) * 1887-01-04 Rolling-mill
US742905A (en) * 1903-01-10 1903-11-03 Wolfgang D Richter Bearing.
US1980186A (en) * 1931-02-19 1934-11-13 American Brass Co Tube reducing means
US2571873A (en) * 1946-07-12 1951-10-16 Vulcan Iron Works Distance and bearing plate for cane mills
US3211027A (en) * 1958-06-06 1965-10-12 Blaw Knox Co Tube rolling method
US3308643A (en) * 1964-04-13 1967-03-14 Mannesmann Meer Ag Rolling frame for pilgrim mill

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US355390A (en) * 1887-01-04 Rolling-mill
US742905A (en) * 1903-01-10 1903-11-03 Wolfgang D Richter Bearing.
US1980186A (en) * 1931-02-19 1934-11-13 American Brass Co Tube reducing means
US2571873A (en) * 1946-07-12 1951-10-16 Vulcan Iron Works Distance and bearing plate for cane mills
US3211027A (en) * 1958-06-06 1965-10-12 Blaw Knox Co Tube rolling method
US3308643A (en) * 1964-04-13 1967-03-14 Mannesmann Meer Ag Rolling frame for pilgrim mill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037451A (en) * 1976-05-04 1977-07-26 Aetna-Standard Engineering Company Piercing and reeling mill construction with removable cap
US5195345A (en) * 1989-07-04 1993-03-23 Sms Schloemann Siemag Aktiengesellschaft Reversing two-high section rolling mill stand

Also Published As

Publication number Publication date
DE1602109A1 (de) 1970-04-09
FR1559326A (de) 1969-03-07
GB1158814A (en) 1969-07-23

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AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765

Effective date: 19850610

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

AS Assignment

Owner name: UNITED ENGINEERING ROLLING MILLS, INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WEAN INCORPORATED;REEL/FRAME:004920/0256

Effective date: 19880610