EP0794021B1 - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen - Google Patents
Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen Download PDFInfo
- Publication number
- EP0794021B1 EP0794021B1 EP97250044A EP97250044A EP0794021B1 EP 0794021 B1 EP0794021 B1 EP 0794021B1 EP 97250044 A EP97250044 A EP 97250044A EP 97250044 A EP97250044 A EP 97250044A EP 0794021 B1 EP0794021 B1 EP 0794021B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- rolls
- hot strip
- grinding shaft
- tailstock sleeve
- 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
Links
- 238000011065 in-situ storage Methods 0.000 title claims 10
- 238000006073 displacement reaction Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000951498 Brachypteraciidae Species 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
- B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
- B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
- B24B5/045—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally with the grinding wheel axis perpendicular to the workpiece axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged
- B24B5/167—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged for rolls with large curvature radius, e.g. mill rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/363—Single-purpose machines or devices for grinding surfaces of revolution in situ
Definitions
- the invention relates to a device for regrinding in Hot strip mill stands built-in rolls by means of pot-shaped rotating Grinding tools that are oscillating parallel to the roller axis, which Grinding tool at the end of a rotary drive that can be moved transversely to the roller Grinding shaft is attached, which is coaxial in an axially displaceable tubular quill guided and at its opposite end with an indirect on the quill supporting displacement drive is connected.
- the axial displacement of the grinding shaft serves to compensate for wear on the cup wheel (approx. 70 mm); the Axial displacement of the quill serves to compensate for the roll rotation (approx. 80 mm).
- a generic device is provided for regrinding the rolls installed in hot strip mill stands, in particular the work rolls in four-high roll stands.
- the contour of the roll can be reworked in the installed stand in the roll stand with several rotating cup-shaped grinding tools arranged next to one another over the bale length of the roll to be ground, which, together with the tool holder receiving them, can be moved in an oscillating manner parallel to the roll axis and adjusted transversely to this independently of the pressure.
- each grinding tool is separately driven in a speed-controllable manner and is arranged on a quill which is axially displaceable in the tool carrier and is connected to drive elements for the cup-shaped grinding tool.
- the known solution proposes, in order to position the grinding tools against the roller, to move the quills on which the tools are fastened with the aid of piston-cylinder units in the longitudinal direction and thereby to control the tool.
- the piston-cylinder units are pressure and displacement-controlled so that every grinding position and pressure can be moved.
- the sleeves can be moved back into a position in which the grinding tools do not hinder the roll removal.
- the drives for the grinding tools preferably electric motors, are each arranged on the end of the sleeve opposite the grinding tool. which are tubular and encompass coaxially around a rotationally driven grinding sleeve.
- a grinding shaft which is connected to the grinding sleeve in a rotationally fixed manner is axially displaceable relative to the grinding sleeve by small adjustment paths, which carries the grinding tool at one free end projecting from the grinding sleeve and is connected at its other end to a controllable displacement drive for the grinding shaft, which in turn is supported indirectly on the quill.
- the quill on its inner circumference receives the stator of an electric motor driving the grinding shaft, the rotor is arranged on the grinding shaft slidably mounted directly in the quill.
- the invention considerably simplifies the known device. This is the separation between the rotary drive for the grinding tool and that of the grinding tool abandoned immediately receiving grinding shaft, so that also on the grinding sleeve can be dispensed with, which previously drove the grinding tool. Rather, the Grinding shaft Part of the electric motor, namely its motor shaft.
- the stator of the motor is arranged in the movable quill, against which the rotor is axially can move. This design is compared to a significant weight saved on the conventional solution. This also means an improvement in quality on the ground roller.
- the generic device builds much easier and is also cheaper to manufacture.
- the flange bushing can preferably be moved axially in ball guides in the sleeve; but it can also slide guides for mounting the flange sleeves against the Quill may be provided.
- the flange bushings slide in the end plates of the quill.
- the flange sleeve has a Metal bellows sealed against the quill.
- Another proposal is the grinding shaft opposite the flange sleeve through a V-ring seal to seal.
- a metal bellows is provided for the sleeve for sealing the grinding shaft, the front bellows for the force-free displacement of the grinding shaft Pressure force and the rear bellows pulling force on the grinding shaft.
- the rear bellows can also be used to prevent rotation for displacement the grinding shaft provided push rod can be formed, which extends over two Thrust bearing supported on the rotating grinding shaft.
- the Quill axis is arranged eccentrically to the grinding shaft axis, so in very a simple adjustment by turning the quill Grinding shaft to the roller axis can be reached.
- the only drawing figure shows a longitudinal section through an inventive Device for regrinding the rolls installed in hot strip mill stands.
- the device is shown roughly schematically simplified.
- the tubular sleeve 3 is at 4 slidably mounted. Hydraulic cylinders 5, which are on the Carriers 2 are arranged and their piston rods 6 indirectly at 7 with the sleeve 3 are connected.
- the sleeve 3 is, as already stated, tubular and carries in it Inner circumference of the stator 8 of an electric motor defined there.
- the rotor 9 this Electric motor is attached directly to the grinding shaft 10, which is on its front End 11 receives the cup-shaped grinding wheel 12 and at its rear end with a displacement drive 13 is connected to which the grinding shaft 10 around Displacement stroke 14 is movable in both directions.
- the axial thrust bearing 15 is provided on the end face of the grinding shaft 10, which and push rod 16 is connected via the axial reciprocating movements on the Grinding shaft 10 can be transmitted, the thrust bearing simultaneously the enable free rotation of the grinding shaft 10.
- the compressed air cylinder 17 is provided, the piston cylinder surfaces 18 can be acted upon on both sides with compressed air.
- angular contact ball bearings 19 provided with which the grinding shaft 10 is mounted in the sleeve 3.
- the inner rings 20 of these angular contact ball bearings are on the grinding shaft 10 and their Outer rings are held on flange bushings 21, which in relation to the sleeve 3 in Axial direction of the grinding shaft 10 are slidably mounted.
- the flange bushings 21 slide over ball guides 22 in the end plates 23 of the sleeve 3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Laminated Bodies (AREA)
Description
Eine gattungsgemäße Vorrichtung ist dazu vorgesehen, die in Warmbandwalzgerüsten eingebauten Walzen, insbesondere die Arbeitswalzen in Quarto-Walzgerüsten nachzuschleifen. Mit mehreren über die Ballenlänge der zu schleifenden Walze verteilt nebeneinander angeordneter rotierender topfförmiger Schleifwerkzeuge, die zusammen mit dem sie aufnehmenden Werkzeugträger parallel zur Walzenachse oszillierend bewegbar und quer zu dieser unabhängig druckgeregelt anstellbar sind, kann die Kontur der Walze im eingebauten Zustand im Walzgerüst nachgearbeitet werden, wobei jedes Schleifwerkzeug separat geschwindigkeitsregelbar drehangetrieben und an einer quer zur Walze axialverschiebbar in dem Werkzeugträger gelagerten Pinole angeordnet ist, die mit Antriebselementen für das topfförmige Schleifwerkzeug verbunden ist.
die rohrförmig ausgebildet sind und eine drehantreibbare Schleifhülse koaxial umgreifen. In der Schleifhülse ist eine drehfest mit der Schleifhülse verbundene Schleifwelle gegenüber der Schleifhülse um geringe Anstellwege axial verschiebbar geführt, die an ihrem einen freien aus der Schleifhülse herausragenden Ende das Schleifwerkzeug trägt und an ihrem anderen Ende mit einem regelbaren Verschiebeantrieb für die Schleifwelle verbunden ist, der sich seinerseits an der Pinole mittelbar abstützt.
Claims (9)
- Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen mittels topfförmiger rotierender Schleifwerkzeuge (12), die parallel zur Walzenachse oszillierend bewegbar sind, wobei das Schleifwerkzeug (12) am Ende einer quer zur Walze verschiebbaren drehangetriebenen Schleifwelle (10) befestigt ist, die in einer axialverschiebbaren rohrförmigen Pinole (3) koaxial geführt und an ihrem entgegengesetzten Ende mit einem sich an der Pinole (3) mittelbar abstützenden Verschiebeantrieb (13) verbunden ist,
dadurch gekennzeichnet,
daß die Pinole (3) an ihrem Innenumfang den Stator (8) eines die Schleifwelle (10) antreibenden Elektromotors aufnimmt, dessen Rotor (9) auf der unmittelbar in der Pinole (3) axial verschiebbar gelagerten Schleifwelle (10) angeordnet ist. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 1,
dadurch gekennzeichnet,
daß zur Lagerung der Schleifwelle (10) in der Pinole (3) an deren beiden Enden Schrägkugellager vorgesehen sind, deren Innenringe (20) auf der Schleifwelle (10) und deren Außenringe auf einer Flanschbüchse gehalten sind, die gegenüber der Pinole (3) in Achsrichtung der Schleifwelle (10) verschiebbar gelagert sind. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 2,
dadurch gekennzeichnet,
daß die Flanschbüchse (21) in einer Kugelführung (22) in der Pinole (3) axial bewegbar ist. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 2,
dadurch gekennzeichnet,
daß die Flanschbüchse (21) in einer Gleitlagerführung in der Pinole (3) axial bewegbar ist. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 2 bis 5,
dadurch gekennzeichnet,
daß die Flanschbüchse (21) gegenüber der Pinole (3) durch einen Metallfaltenbalg (24) abgedichtet ist. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 2 bis 5,
dadurch gekennzeichnet,
daß die Schleifwelle (10) gegenüber der Flanschbüchse (21) durch V-Ring-Dichtungen abgedichtet ist. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 5,
dadurch gekennzeichnet,
daß zum Abdichten der Schleifwelle (10) an beiden Enden der Pinole (3) jeweils ein Metallfaltenbalg (24) vorgesehen ist, wobei zum kräftefreien Verschieben der Schleifwelle der vorderer Faltenbalg Druckkraft und der hinterer Faltenbalg Zugkraft auf die Schleifwelle (10) ausübt. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 7,
dadurch gekennzeichnet,
daß der hintere Faltenbalg (24) gleichzeitig als Verdrehsicherung der zur Verschiebung der Schleifwelle (10) vorgesehenen Schubstange (16) ausgebildet ist, die sich über zwei Drucklager (15) an der drehenden Schleifwelle (10) abstützt. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach einem oder mehreren der vorhergehenden Ansprüche ,
dadurch gekennzeichnet,
daß die Pinolenachse zur Schleifwellenachse exzentrische angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19609259 | 1996-02-28 | ||
DE19609259A DE19609259C2 (de) | 1996-02-28 | 1996-02-28 | Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0794021A1 EP0794021A1 (de) | 1997-09-10 |
EP0794021B1 true EP0794021B1 (de) | 2000-03-22 |
Family
ID=7787782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97250044A Expired - Lifetime EP0794021B1 (de) | 1996-02-28 | 1997-02-27 | Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0794021B1 (de) |
DE (2) | DE19609259C2 (de) |
ES (1) | ES2143831T3 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10016981C2 (de) * | 2000-04-06 | 2002-05-08 | Thielenhaus Ernst Gmbh & Co Kg | Vorrichtung zur spanenden Bearbeitung von Werkstücken |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE640379C (de) * | 1933-03-03 | 1936-12-31 | Himmelwerk A G | Elektrisch angetriebene Schleifmaschine zum Herstellen masshaltiger Werkstuecke |
DE2206533A1 (de) * | 1972-02-11 | 1973-08-16 | Marcello Toncelli | Schleifmaschine zum schleifen der kanten einer marmorplatte |
FR2326270A1 (fr) * | 1975-10-02 | 1977-04-29 | Europ Propulsion | Montage de broche porte-outil, notamment pour rectifieuse |
JPS60234706A (ja) * | 1984-05-07 | 1985-11-21 | Mitsubishi Heavy Ind Ltd | 圧延機のロ−ル研削方法 |
DE4409060C3 (de) * | 1994-03-11 | 2000-08-03 | Mannesmann Ag | Vorrichtung zum Nachschleifen eingebauter Walzen |
DE19537521C2 (de) * | 1995-09-29 | 1997-09-18 | Mannesmann Ag | Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen |
-
1996
- 1996-02-28 DE DE19609259A patent/DE19609259C2/de not_active Expired - Fee Related
-
1997
- 1997-02-27 ES ES97250044T patent/ES2143831T3/es not_active Expired - Lifetime
- 1997-02-27 DE DE59701291T patent/DE59701291D1/de not_active Expired - Fee Related
- 1997-02-27 EP EP97250044A patent/EP0794021B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0794021A1 (de) | 1997-09-10 |
DE19609259C2 (de) | 1998-07-02 |
ES2143831T3 (es) | 2000-05-16 |
DE19609259A1 (de) | 1997-09-04 |
DE59701291D1 (de) | 2000-04-27 |
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