DE821482C - Storage of the lower support rolls of four-roll rolling stands - Google Patents

Storage of the lower support rolls of four-roll rolling stands

Info

Publication number
DE821482C
DE821482C DES3718A DES0003718A DE821482C DE 821482 C DE821482 C DE 821482C DE S3718 A DES3718 A DE S3718A DE S0003718 A DES0003718 A DE S0003718A DE 821482 C DE821482 C DE 821482C
Authority
DE
Germany
Prior art keywords
lower support
storage
roll
rolling stands
bearings
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
Application number
DES3718A
Other languages
German (de)
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 VERTRIEBSGESELLSCHAFT
Original Assignee
SIEMAG VERTRIEBSGESELLSCHAFT
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 SIEMAG VERTRIEBSGESELLSCHAFT filed Critical SIEMAG VERTRIEBSGESELLSCHAFT
Priority to DES3718A priority Critical patent/DE821482C/en
Application granted granted Critical
Publication of DE821482C publication Critical patent/DE821482C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B13/00Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Description

Bei den Vierwalzen-Walzgerüsten, die zur Blechwalzung dienen, werden von den vier in Übereinanderanordnung liegenden Walzen die mittleren Arbeitswalzen angetrieben, während die äußeren, die Stützwalzen, von den Arbeitswalzen durch Reibung mitgenommen werden.In the case of the four-roll mill stands that are used for sheet rolling, are of the four rolls arranged one above the other, the middle work rolls driven, while the outer, the backup rolls, from the work rolls by friction get picked up.

Die ordnungsgemäße Mitnahme der unteren Stützwalzen kann beim Leerlauf der Arbeitswalzen ausbleiben, insbesondere wenn diese Stützwalze in Gleitlagern läuft. Die Ursache hierfür ist der Umstand, daß der Reibungsschluß zwischen der leichteren Arbeitswalze und der' Stützwalze kleiner als die Reibung der schweren Stützwalze in ihren Gleitlagern ist.The correct entrainment of the lower back-up rollers can occur when idling the work rolls are absent, especially if this back-up roll is in plain bearings runs. The reason for this is the fact that the frictional engagement between the lighter work roll and the 'back-up roll smaller than the friction of the heavier ones The back-up roll is in its plain bearings.

Das bei Nichtmitnahme der Stützwalze erfolgende Aufeinanderschleifen der beiden Walzen führt zu Beschädigungen der Oberflächen der Walzen, die ihren Gebrauchswert empfindlich mindern kann.The grinding that occurs when the back-up roller is not taken along of the two rollers leads to damage to the surfaces of the rollers, their Can sensitively reduce the utility value.

Diese betriebstechnische Unzulänglichkeit wird erfindungsgemäß in einfacher Weise dadurch beseitigt, daß die untere Stützwalze außer in Gleitlagern in Wälzlagern ruht, die nachgiebig, z. B. federnd, abgestützt sind. Diese Doppellagerung hat zur Folge, daß bei Leerantrieb der Arbeitswalzen die Gleitlager der Unterwalze entlastet und der zwischen dieser und der Arbeitswalze bestehende Reibungsschluß die Mitnahme der Unterwalze gewährleistet. Es ist ersichtlich, daß die zusätzlichen Wälzlager wegen ihrer nur geringfügigen Belastung baulich klein gehalten werden können, so daß ihre konstruktive Unterbringung keine besonderen Schwierigkeiten macht.According to the invention, this operational shortcoming is described in simply eliminated by the fact that the lower support roller except in plain bearings rests in roller bearings that are resilient, e.g. B. resilient, are supported. This double bearing has the consequence that when the work rolls are driven empty, the slide bearings of the lower roll relieved and the frictional engagement between this and the work roll the entrainment of the lower roller is guaranteed. It can be seen that the additional Rolling bearings are kept structurally small because of their minimal load can, so that their structural accommodation no particular difficulties power.

In der Zeichnung ist eine Ausführungsform der Erfindung schematisch dargestellt.An embodiment of the invention is shown schematically in the drawing shown.

Die Unterwalze i, die zur Abstützung der unteren Arbeitswalze 2 dient, ruht in den Ständergleitlagern 3 und mit den stufenförmig angesetzten Lägerzapfen 4 zusätzlich noch in Rollenlagern 5. Diese Rollenlager sind auf Federn 6 abgestützt.The lower roll i, which serves to support the lower work roll 2, rests in the stator slide bearings 3 and with the stepped bearing journals 4 also in roller bearings 5. These roller bearings are supported on springs 6.

Beim Walzbetrieb übernehmen die Gleitlager 3 die Walzdrucke, ohne hierbei, von dem durch den federnden Andruck der Rollenlager an die Zapfen 4 abgesehen, die Rollenlager zu beanspruchen. Bei Leerlauf, also mit Austritt des `'Falzgutes aus dem Walzspalt der beiden Arbeitswalzen, werden die Federn 6 frei, entlasten die Gleitlager vom Gewicht der Stützwalze i und sichern dadurch ihre Mitnahme durch die Arbeitswalze 2.During the rolling operation, the plain bearings 3 take over the rolling pressures without here, apart from the resilient pressure of the roller bearings on the pin 4, to claim the roller bearings. When idling, i.e. when the folded material emerges from the nip of the two work rolls, the springs 6 are released, relieved the slide bearings from the weight of the back-up roller i and thereby secure their entrainment the work roll 2.

Die nachgiebige Stützung der Kugellager 5 kann auch durch andere Mittel, z. B. durch Gegengewichte oder pneumatisch, erzielt werden.The resilient support of the ball bearings 5 can also be done by other means, z. B. by counterweights or pneumatically.

Claims (1)

PATENTANSPRUCH: Lagerung der unteren Stützwalzen von Vierwalzen-Walzgerüsten, deren äußere Walzen den Arbeitswalzen als Stützwalzen dienen, dadurch gekennzeichnet, daß die untere Stützwalze (i) außer in Gleitlagern (3) in Wälzlagern (5) ruht, die nachgiebig, z. B. federnd (vgl. Federn 6), abgestützt sind. PATENT CLAIM: Storage of the lower support rolls of four-roll rolling stands, the outer rolls of which serve as support rolls for the work rolls, characterized in that the lower support roll (i) rests in roller bearings (5), except in plain bearings (3), which are resilient, e.g. B. resilient (see. Springs 6), are supported.
DES3718A 1950-05-14 1950-05-14 Storage of the lower support rolls of four-roll rolling stands Expired DE821482C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES3718A DE821482C (en) 1950-05-14 1950-05-14 Storage of the lower support rolls of four-roll rolling stands

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES3718A DE821482C (en) 1950-05-14 1950-05-14 Storage of the lower support rolls of four-roll rolling stands

Publications (1)

Publication Number Publication Date
DE821482C true DE821482C (en) 1951-11-19

Family

ID=7470338

Family Applications (1)

Application Number Title Priority Date Filing Date
DES3718A Expired DE821482C (en) 1950-05-14 1950-05-14 Storage of the lower support rolls of four-roll rolling stands

Country Status (1)

Country Link
DE (1) DE821482C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281981B (en) * 1958-08-25 1968-11-07 United Eng Foundry Co Rolling frame with crowning change of the rolls by bending out the roll axis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281981B (en) * 1958-08-25 1968-11-07 United Eng Foundry Co Rolling frame with crowning change of the rolls by bending out the roll axis

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