US3675455A - Roll stand with working rolls supported in chocks - Google Patents

Roll stand with working rolls supported in chocks Download PDF

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Publication number
US3675455A
US3675455A US107921A US3675455DA US3675455A US 3675455 A US3675455 A US 3675455A US 107921 A US107921 A US 107921A US 3675455D A US3675455D A US 3675455DA US 3675455 A US3675455 A US 3675455A
Authority
US
United States
Prior art keywords
chocks
rolls
vertical rolls
rolling mill
strap members
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
US107921A
Other languages
English (en)
Inventor
Erich Bretschneider
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.)
Siemag Siegener Maschinenbau GmbH
Original Assignee
Siemag Siegener Maschinenbau GmbH
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 DE19702002745 external-priority patent/DE2002745C/de
Application filed by Siemag Siegener Maschinenbau GmbH filed Critical Siemag Siegener Maschinenbau GmbH
Application granted granted Critical
Publication of US3675455A publication Critical patent/US3675455A/en
Anticipated expiration legal-status Critical
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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/001—Convertible or tiltable stands, e.g. from duo to universal stands, from horizontal to vertical stands
    • 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
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/26—Adjusting eccentrically-mounted roll bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B2013/106—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for sections, e.g. beams, rails
    • 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

Definitions

  • the invention relates to a roll stand, with working rolls supported in chocks. the rolling forces of which are absorbed by g; g 'gg lrg tension strap members adapted to act on said chocks and ⁇ 58] Field of Search ..72/238, 239, 244, 241. 237 adjusable lame m each f the ad usting the roll gap by means of eccentrics engaged in the tension strap members.
  • Norlindh stands are also two-high roll stands, but the power flow between the upper and lower chock is provided by means of screws and nuts instead of tension strap members. A lightweight, but stiff construction of the stand may also be achieved by these means.
  • the Norlindh stands do not permit self-aligning adjustment of the chocks. Accordingly, canting of the roll journals in the bearings cannot be avoided in the event of roll flexure.
  • the strap members of the so-called Wilson" stands may have a larger cross section than the bolts of the Norlindh” stands so that stretch of the entire system in Wislon” stands is less than that in the Norlindh stands.
  • Wilson Three high stands which can be developed into a universal rolling mill by the insertion of vertical rolls have also been disclosed as a further development of the so-called Norlindh stands.
  • known Wilson can be constructed only as two-high roll stands owing to the use of tension strap members as direct connecting elements between the chocks.
  • this problem is solved substantially in that the checks are guided between two parallel frames in which one tension strap member each for each chock is suspended in that an eccentric constantly engaged in each tension strap member is supported in the frame for each such tension strap member and that slidable bolts are disposed in the checks and are adapted for optional engagement and disengagement, respectively, with the tension strap members by means of adjusting apparatus.
  • the inventive incorporation of the guide frame for the chocks into the power flow between the roll sets provides not only the advantage of enabling the adjusting means for the rolls to remain in the stand when the rolls are changed or the stand is reset, but also enables the frames to be so constructed that a vertical roll set may be inserted into the frame in addi tion to a horizontal roll set in order to form a universal roll stand. Coupling and uncoupling of the chocks with the tension strap members can be rapidly and simply performed by means ofslidable bolts which are disposed in the chocks.
  • the tension strap apertures into which the connecting bolts of the chock engage are formed by eccentric bushes adapted to rotate in said tension strap members.
  • the aforementioned eccentric bushes permit course adjustment of the roll sets relative to each other to be performed manually prior to commencing the rolling program.
  • the eccentrics disposed in the frames are adjustably coupled to a common transmission to enable the precise roll gap adjustment during rolling operation.
  • the adjusting apparatus for the eccentrics disposed in the frame may be formed by self-arresting transmissions, for example, worm gear transmissions, coupled to each other through shafts and intermediate angle drives.
  • the parallel frames are supported on one side with a defined distance on a common base cross member and are, on the other side, retained at a defined distance by two upper, removable cross members.
  • tension strap members for a universal roll set comprising two horizontal rolls and two vertical rolls are suspended in the frames, the frames for the checks of the vertical rolls having supporting guides.
  • the inventive construction of a roll stand is far superior to that of conventional roll stands.
  • a weight of 82 tons is required for a universal roll stand of conventional construction having horizontal rolls of 900 mm. diameter and vertical rolls of 550 mm. diameter
  • a universal roll stand according to the invention it is possible for a universal roll stand according to the invention to be constructed with a weight of only 28 tons.
  • a conventional two-high roll stand with rolls of550 mm. diameter and L000 mm. length will hat e an overall weight of 36 tons while a two-high roll stand according to the invention can be constructed with a weight of only 18 tons.
  • the roll stands constructed in accordance with the invention are twice as stiff as conventional constructions.
  • the stand module in terms of tons/mm. in stands according to the invention is twice as large as in conventional roll stand constructions, that is to say, if the stretch of a conventional roll stand amounts to 350 tons/mm, the same value in the novel stand will be 700 tons/mm.
  • FIG. I is an universal roll stand according to the invention as seen along the general orientation of the rolling axis
  • FIG. 2 is a plan view of the universal roll stand according to FIG. 1,
  • FIG. 3 is a section along the line llllll of the universal roll stand shown in FIGS. I and 2,
  • FIG. 4 is a two-high roll stand constructed in accordance with the invention as seen along the general orientation of the rolling axis,
  • FIG. Si is a plan view of the two-high roll stand
  • FIG. 6 shows the two-high roll stand as seen along the direction of the arrow VI.
  • the universal roll stand illustrated in FIG. I to 3 of the drawing incorporates two identical frames 1 and 2, extending in parallel to each other and being disposed opposite each other at a distance and in a mirror image. They are supported equal distances relative to the orientation of the rolling axis on a common base cross member 3 and are, moreover, joined to each other at the top by means of two removable cross members 4.
  • Two upper eccentric bolts 5 and two lower eccentric bolts 6 are rotatably inserted into each of the frames 1 and 2, each of the said eccentric bolts 5 forming the support for one strap member 7 and each of the eccentric bolts 6 forming the sup port for one strap member 8.
  • One eccentric bush 9 each is inserted into the free ends of the strap members 7 and 8.
  • the eccentric bushes 9 of the strap members 7 and 8 represent en gagement apertures for axially slidable bolts 10 and II which are guided in each of the chocks l2 and I3 for the horizontal rolls l4 and I5.
  • Wormwheels 16 in mesh with worms 17 are non-rotationally connected to the eccentric bolts 5 and 6, as
  • a motor 18 is provided for the common drive of all worms 17 to enable synchronous adjustment of all eccentric bolts 5 and 6 to be obtained.
  • the chocks l9 and 20 for the vertical rolls 2] and 22 are suspended in the frames 1 and 2 by means of strap members 23 in the same way as the chocks l2 and 13 for the horizontal rolls l4 and 15. To this end the strap members 23 are supponed in the frames 1 and 2 on eccentric bolts 24 and 25 whose construction is identical to that of the eccentric bolts 5 and 6.
  • the eccentric bolts 24 and 25 are provided with transmissions identical to those of the eccentric bolts 5 and which are drivingly connected by means of a keyed wormwheel 16 to a worm 17.
  • a motor 26 ensures synchronous adjustment of all eccentric bolts 24 and 25 in the two frames 1 and 2.
  • the frames 1 and 2 are provided with horizontally extending recesses 27 which form supporting guides for the chocks I9 and of the vertical rolls 2] and 22.
  • the strap members 23 for the vertical rolls 21 and 22 are provided with eccentric bushes 9 functioning as engagement means for slidable coupling bolts 10 and II which are slidably guided in the chocks l9 and 20.
  • the worms I7 adapted to adjust the eccentric bolts 5 and 6 through the worrnwheels 16 are all drivingly connected to each other through shafts 28 and angle drives 29.
  • the worms, adapted to drive the eccentric bolts 24 and through corresponding wormwheels are also in permanent driving connection with each other through shafts 30 and 31 and through angle drives 32,
  • the twohigh roll stand illustrated in FIGS. 4 to 6 of the drawing differs from the universal roll stand illustrated in FIGS. I and 3 substantially only by virtue of the fact that no vertical roll fittings are provided and that, accordingly, the tension strap members and adjusting means associated therewith are also omitted.
  • Resetting of the aforementioned two-high roll stand in all other respects is performed in the same way as for the universal roll stand illustrated in FIGS. 1 to 3, that is to say, it is merely necessary for the bolts 10 and I1. slidably guided in the chocks l2 and 13, to be disengaged from the eccentric bushes 9 of the strap members 7 and 8 when it is desired to remove the roll set or for said bolts 10 and II to be correspondingly re-engaged after the new roll set has been inserted into the stand.
  • a rolling mill comprising:
  • said means disposed in said chocks including connecting members extending from said chocks into said eccentric bushings wherein said eccentric bushings are rotatable to permit additional adjustment of said working rolls relative to each other.
  • a rolling mill according to claim 1 wherein said pair of frames comprises two spaced-apart housings
  • a common base for supporting said housings at one side thereof and at a fixed spaced-apart distance
  • said frames having guiding surfaces formed therein for receiving the chocks of said vertical rolls and allowing them to move towards and away from each other in a horizontal direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
US107921A 1970-01-22 1971-01-20 Roll stand with working rolls supported in chocks Expired - Lifetime US3675455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702002745 DE2002745C (de) 1970-01-22 Walzgerüst mit in Einbaustucken la gernden, anstellbaren Arbeitswalzen

Publications (1)

Publication Number Publication Date
US3675455A true US3675455A (en) 1972-07-11

Family

ID=5760226

Family Applications (1)

Application Number Title Priority Date Filing Date
US107921A Expired - Lifetime US3675455A (en) 1970-01-22 1971-01-20 Roll stand with working rolls supported in chocks

Country Status (6)

Country Link
US (1) US3675455A (OSRAM)
BE (1) BE761779A (OSRAM)
ES (1) ES386850A1 (OSRAM)
FR (1) FR2077268A1 (OSRAM)
GB (1) GB1287073A (OSRAM)
ZA (1) ZA708719B (OSRAM)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866454A (en) * 1972-12-19 1975-02-18 Siemag Siegener Masch Bau Rolling mill
JPS5099946A (OSRAM) * 1973-12-15 1975-08-08
US5715720A (en) * 1995-03-13 1998-02-10 Sms Schloemann-Siemag Aktiengesellschaft Device for automatically positioning a roll stand with grooved rolls and rest bars and roll fittings in front of the roll stand relative to roll center

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266282A (en) * 1961-10-20 1966-08-16 United Eng Foundry Co Apparatus for automatically positioning and supporting a member
US3309909A (en) * 1963-02-06 1967-03-21 Wilson Alexander Ian Mills for rolling metal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266282A (en) * 1961-10-20 1966-08-16 United Eng Foundry Co Apparatus for automatically positioning and supporting a member
US3309909A (en) * 1963-02-06 1967-03-21 Wilson Alexander Ian Mills for rolling metal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866454A (en) * 1972-12-19 1975-02-18 Siemag Siegener Masch Bau Rolling mill
JPS5099946A (OSRAM) * 1973-12-15 1975-08-08
US5715720A (en) * 1995-03-13 1998-02-10 Sms Schloemann-Siemag Aktiengesellschaft Device for automatically positioning a roll stand with grooved rolls and rest bars and roll fittings in front of the roll stand relative to roll center

Also Published As

Publication number Publication date
ZA708719B (en) 1971-10-27
FR2077268A1 (fr) 1971-10-22
GB1287073A (en) 1972-08-31
FR2077268B1 (OSRAM) 1975-06-06
BE761779A (fr) 1971-07-01
ES386850A1 (es) 1973-04-16

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