US3584491A - Device to be used in roll stands - Google Patents

Device to be used in roll stands Download PDF

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Publication number
US3584491A
US3584491A US776582A US3584491DA US3584491A US 3584491 A US3584491 A US 3584491A US 776582 A US776582 A US 776582A US 3584491D A US3584491D A US 3584491DA US 3584491 A US3584491 A US 3584491A
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US
United States
Prior art keywords
disc
discs
engagement
parts
roll
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
US776582A
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English (en)
Inventor
Alfred Stich
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.)
Voestalpine AG
Voest AG
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Voestalpine AG
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Filing date
Publication date
Application filed by Voestalpine AG filed Critical Voestalpine AG
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Publication of US3584491A publication Critical patent/US3584491A/en
Anticipated expiration legal-status Critical
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    • 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

Definitions

  • the present invention relates to a device to be used in roll stands containing inserts and adjusting spindles and movable intermediate pieces therebetween, and consists in designing the intermediate piece so as to be composed ofinterengageable parts, such as cogged discs which are displaceable in relation to one another from a position of nonengage ment into a position of engagement, whereby the overall height of the intermediate piece is reduced and free handling space is provided beneath the adjusting spindles.
  • the present invention relates to a device to be used in roll stands containing movable intermediate pieces arranged between the inserts and the adjusting spindles.
  • Said intermediate piece may either serve as a mere filling element or else may be provided with a lens-shaped member enabling angular displacement of the inserts; similarly it may be designed as a roll thrust bearing for the reduction of friction, and it may contain a pressure gauge for the measurement of roll pressure.
  • the adjusting spindles are screwed back sufficiently. Because of the low thread gradient of the adjusting spindles and the low turning rate feasible this is a highly time-consuming operation. On a skin-pass mill stand, for instance, the screwing operation takes 17 minutes to cover a distance of 100 mm. Additional 17 minutes are required for the adjusting operation, which, since the rolls are replaced every 6 hours, involves an extremely long setup time. Aiming at an easier mounting and dismounting of the rolls it has been suggested to design the intermediate piece as a movable, more particularly a removable, part. To this end various construction have been proposed. They all have in common, however, that a guidingframe receiving the intermediate pieces is provided and this guiding frame, as such, constitutes another obstacle to manipulations at the roll stand and occupies much space.
  • the present invention aims at avoiding these disadvantages and difficulties by providing an intermediate piece adjustable in the overall height thereof and thus securing free handling space for the dismounting of the rolls, there being no need for dismounting the intermediate piece, as such, as well as for the arrangement of a guiding frame.
  • the construction of the invention resides in that the intermediate pieces are composed of two or more superposed parts provided with projections and recesses, said parts being displaceable in relation to one another from an unengaged position into engagement, in which the overall height of the intermediate member assembled from said individual parts is less than the height thereof when the individual parts are out of engagement.
  • the intermediate piece is composed of two cogged discs or cogged plates rotatable relative to each other, in the position of nonengagement the teeth of the cogged discs being superposed, whereas in the engaged position the teeth of the two cogged discs mesh.
  • rotation of the two cogged discs relative to each other suitably is effected by means of a hydraulic cylinder, the one end thereof being hinged to the upper cogged disc, the other end thereof to a switch ring rotatably mounted in the upper cogged disc and coaxial thereto, which switch ring is provided with claws engaging with the gaps of the lower cogged disc.
  • Another construction enabling alteration in its overall height of an intermediate piece consists in that said intermediate piece is composed of two parts provided with keylike projections and groovelike recesses, said parts being longitudinally displaceable relative to each other.
  • FIG. 1 shows a roll stand provided with an intermediate piece according to the invention, the other Figures being highly enlarged viewed of the intermediate piece, viz.
  • FIG. 2 is a vertical sectional view of an intermediate piece according to a first embodiment of the invention, in nonengagement;
  • FIG. 3 is a vertical sectional view of the same intermediate piece, in engagement
  • FIG. 4 is a horizontal sectional view along the line lV-lV in FIG. 2;
  • FIG. 5 is a horizontal sectional view along the line V-V in FIG. 3;
  • FIG. 6 is a diagrammatical view of another embodiment of the intermediate piece according to the invention.
  • a bushing 2 with female thread is provided, in which the adjusting spindle 3 is screwably arranged.
  • the upper backup roll is mounted in the upper insert 4 .
  • an intermediate piece is arranged, consisting of a lower cogged disc 6 and an upper cogged disc 7, rotatable in relation to each other.
  • a base disc 5 is arranged transmitting the pressure via the lower cogged disc 6 and the upper cogged disc 7, the breaker block 8, the pressure disc 9, the rolls 10 and the lens-shaped member 11 provided with a spherical cap to the adjusting spindle 3.
  • the lower cogged disc 6 and the upper cogged disc 7 are out of engagement, i.e. the teethpftthe discs are superposed.
  • a hydraulic cylinder 12 is provided (FIG. 5), the one end thereof being hinged to the upper cogged disc 7, the other end thereof to a composite switch ring 13.
  • the switch ring 13 is fastened to carrier ring 31 which is rotatably mounted in the annular groove 32 formed in the periphery of the upper cogged disc 7,. the ring 13 and disc 7 being coaxial.
  • the switch ring 73 carries a plurality of angularly spaced claws 14 which engage corresponding ones of the gaps of the lower cogged disc 6.
  • the ring 13 and upper disc 7 rotate relative to each other, while the claws 14, which are in engagement with the lower disc 6, prevent relative rotation between the ring 13 and disc 6.
  • the upper cogged disc 7 together with the breaker block 8 is suspended on a fixing ring 15 received in a ring groove 16 of the adjusting :spindle.
  • Seventeen is a connecting rod, connecting the switch ring 13 re another switch ring of identical construction arranged on an opposite spindle of the roll stand. In this manner an undesired rotation of the upper and lower cogged discs during rolling is avoided.
  • the hydraulic cylinder 12 causes the upper cogged disc 7 and consequently the breaker block 8 as well as the pressure disc 9 to turn into a position where the two cogged discs 6 and 7 are superposed in tooth-to-gap alignment.
  • the insert 4, the base disc 5 and the lower cogged disc 6 may now be hydraulically lifted, by the roll balance means 35 conventionally employed in roll stands of the type herein disclosed, whereby engagement is effected, in which position the height of the intermediate member is less than in nonengaged position.
  • the engaged position is illustrated in FIG. 3.
  • the surfaces of the two cogged discs are brought out of contact prior to turning the cogged disc 7. This is effected by either lowering the insert or screwing up the adjusting spindle. This lifting stroke should be somewhat greater than the clearance 18 between fixing ring 15 and ring-groove 16.
  • the switch ring 13 may be turned back in the position shown in FIG. 3, whereupon the claws 14 move into a position beneath the teeth of the cogged disc 6 and prevent this disc 6 from being lowered together with the insert 4.
  • FIG. 6 Another embodiment of the intermediate piece according to the invention is diagrammatically illustrated in FIG. 6, wherein the intermediate piece consists of two parts, 19, 20 longitudinally displaceable in relation to each other which parts are provided with keylike projections 21 and groovelike recesses 22. Upon displacement the k-eylike projections 21 of the one part engage with the groovelike recesses 22 of the other part.
  • the overall height of the intermediate piece in engaged position is less than the height thereof in unengaged position.
  • a roll stand comprising roll-supporting inserts and adjusting spindles, means intermediate said inserts and spindles comprising at least two superposed parts each having projections and recesses, and means for displacing said parts relative to one another between a position of nonengagement and a position of engagement, the overall height of the assembled intermediate means in said position of engagement being less than the overall height of said at least two parts in said position of nonengagement.
  • said intermediate means is composed of two discs having interengageable teeth and gaps, said discs being rotatable in relation to each other from a position of nonengagement, in which said teeth of said discs are superposed, into a position of engagement, in which the teeth of the one disc engage with the gaps of the other disc 3.
  • said intermediate means is suspended in a fixing ring received in a ring groove of said adjusting spindle.
  • a roll stand comprising roll-supporting inserts and adjusting spindles, intermediate means between said inserts and said spindles, each composed of an upper disc and a lower disc provided with interengageable teeth and gaps and hydraulic cylinder means for rotating said discs relative to each other between a position of tooth-to-tooth alignment and a position of tooth-to-gap alignment, whence a vertical displacement effects engagement of said upper and lower discs, said cylinder means being connected with one end to said upper disc and hinged with its other end to a switch ring rotatably mounted in said upper disc and coaxial thereto, said switch ring being provided with claws engaging with the gaps of said lower disc.
  • said intermediate means is composed of two elongated parts provided with alternating key-shaped projections and groove-shaped recesses, said parts being longitudinally displaceable in relation to each other to move said projections and recesses in and out of engagernent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Rolls And Other Rotary Bodies (AREA)
US776582A 1967-11-24 1968-11-18 Device to be used in roll stands Expired - Lifetime US3584491A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1061867A AT282518B (de) 1967-11-24 1967-11-24 Einrichtung an Walzgerüsten

Publications (1)

Publication Number Publication Date
US3584491A true US3584491A (en) 1971-06-15

Family

ID=3623569

Family Applications (1)

Application Number Title Priority Date Filing Date
US776582A Expired - Lifetime US3584491A (en) 1967-11-24 1968-11-18 Device to be used in roll stands

Country Status (5)

Country Link
US (1) US3584491A (de)
AT (1) AT282518B (de)
DE (2) DE1805791A1 (de)
FR (1) FR1593340A (de)
GB (1) GB1245816A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322389C2 (de) * 1992-10-31 1996-09-05 Thaelmann Schwermaschbau Veb Ständerloses Walzgerüst

Also Published As

Publication number Publication date
AT282518B (de) 1970-06-25
FR1593340A (de) 1970-05-25
GB1245816A (en) 1971-09-08
DE1805791A1 (de) 1969-06-26
DE6804413U (de) 1969-03-27

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