EP0765697B1 - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen - Google Patents
Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen Download PDFInfo
- Publication number
- EP0765697B1 EP0765697B1 EP96250188A EP96250188A EP0765697B1 EP 0765697 B1 EP0765697 B1 EP 0765697B1 EP 96250188 A EP96250188 A EP 96250188A EP 96250188 A EP96250188 A EP 96250188A EP 0765697 B1 EP0765697 B1 EP 0765697B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- shaft
- tool
- sleeve
- hot strip
- 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 1
- 238000006073 displacement reaction Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- 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
- 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
Definitions
- the invention relates to a device for regrinding in Hot strip rolling mills built-in rolls, especially the work rolls in Four-high mill stands using several over the bale length of the roll to be ground distributed rotating cup-shaped grinding tools arranged side by side, the together with the tool holder receiving them parallel to the roller axis can be moved in an oscillating manner and adjusted independently of it in a pressure-controlled manner, each grinding tool separately driven and adjustable speed on a quill axially displaceable in the tool carrier is arranged with drive elements for the cup-shaped grinding tool is connected, the grinding tool being arranged at one end of the grinding shaft and the grinding shaft at its other end with an adjustable Sliding drive for the grinding shaft is provided.
- a generic device is described in DE-A-44 09 060. She serves regrinding, especially the work rolls of hot strip stands after reaching a certain wear condition u.z. when installed in the mill stand, which is an improvement over the previous one applied regrinding of the rollers when removed to external Roll grinders represents.
- the known device enables this Reworking the roller surface when installed with great accuracy and allowed by changing the pressure with which the grinding tools are applied be, also the production of special roll ground profiles, even if that Wear pattern of the roller after rolling always the same bandwidth compared to Center of the roller has pronounced edge areas with a larger diameter.
- the previously known solution strikes the roller to turn on the grinding tools before, quills (referred to as plungers there) to which the tools are attached With the help of piston-cylinder units to move in the longitudinal direction and thereby Control tool.
- the piston-cylinder units are pressure and displacement-controlled, so that every grinding position and pressure can be moved.
- the plungers can be moved back to a position in the the grinding tools do not hinder the roll removal.
- the drives for the Grinding tools preferably electric motors, are each on the Grinding tool arranged opposite end of the plunger and together with this movable.
- the invention proposes that the quill is tubular and coaxially encompasses a drivable grinding sleeve, in the one rotationally fixed to the grinding sleeve grinding shaft opposite the Abrasive sleeve is guided axially displaceable by small adjustment paths, which at one free end protruding from the grinding sleeve, the grinding tool carries and on at the other end with an adjustable sliding drive for the grinding shaft is connected, which in turn is supported indirectly on the quill.
- the present invention proposes a separation between the rotary drive for the Grinding tool and the grinding shaft directly receiving the grinding tool before by the quill - or, as referred to in the prior art, the plunger - hollow is formed and encompasses a grinding sleeve over which the grinding tool is driven.
- the actual axial displacement mechanism for the grinding tool during the grinding process is in the form of a slidable into the grinding sleeve inserted grinding shaft so that the dynamic to move Masses (displacement approx. ⁇ 12.5 mm) essentially to the mass of the Reduce the grinding shaft and that of the grinding tool. That many times over larger masses of the quill and the rotary actuator that have to be moved around the grinding tool into a position enabling the roll removal shift, are independent of the control drive of the grinding movement and during of the grinding process out of operation.
- the drive motors for the Grinding tools not axially together with the sleeve during grinding operation moves, but are fixed, while only the grinding shaft is moved back and forth, which in turn rotate over the grinding sleeve of the fixed drive motor is transferred.
- the hollow shaft motor was a particularly compact and Device shortening design of the device according to the invention found that it allows to use a standardized air cylinder.
- an adjustable air cylinder is provided as Sliding drive for the grinding shaft.
- a compressed air cylinder can because of the compressibility of the medium Air bumps can be well balanced.
- the regulation of Measure the grinding shaft movement finely and precisely because of the alternating Actuation of the piston surfaces of the compressed air cylinder is sensitive the grinding shaft and the grinding tool is secured.
- the air cylinder can be relatively light because the masses to be moved due to the proposal according to the invention are low.
- the sleeve can be clamped in the tool holder and only when Roller change or to remove the grinding tools together with the grinding sleeve Grinding tool and drive motor in the tool holder axially (in the order of magnitude 200 mm).
- This proposal of the invention ensures that the Quill can also travel a larger distance, for example if the rollers have to be replaced or the tools have to be replaced.
- the quill with the motor flanged onto it is replaced by a Sliding drive, for example in the form of a piston-cylinder unit axially withdrawn, the axial guide of the quill on its outer circumference in a Appropriate guidance of the tool holder takes place.
- the sleeve in the tool holder with a closed Provide water cooling and can be clamped in any position. This can be necessary because of high temperatures in the working area of the grinding tools occur through the forming process, the warping of the guides between Tool carrier and quill or quill and grinding sleeve could result.
- a Water cooling in this area prevents material warping and thus represents the required high grinding accuracy.
- the hollow shaft drive morale is also water cooled.
- the grinding process can be controlled automatically, so can an actual value by measuring the pressure in the cylinder space of the compressed air cylinder be tapped with one corresponding to the roll shape to be ground Target pressure value is compared. If the actual value deviates from the target value, a Pressure increase or decrease in the cylinder space of the compressed air cylinder initiated with a change in the contact pressure of the grinding shaft Effects grinding tool on the roller.
- the entire facility is for high Quality standard can be used.
- the only drawing figure shows, roughly schematically, an inventive one Device, which initially consists of the cup-shaped grinding tool 1, which in expediently via a standardized steep taper 2 with the grinding shaft 3 connected is.
- the grinding shaft 3 is, as indicated at 4, in the direction of it Longitudinal axis 5 slidably arranged in a grinding sleeve 6 in both directions, which is rotatably mounted at 7 in the quill 8.
- the quill 8 in turn is in the direction of the arrow 9 displaceable in the tool carrier 10, for which purpose between the tool carrier 10 and the quill is articulated a piston-cylinder unit 11.
- a hollow shaft motor 13 On the face of the quill 9 is flanged at 12 a hollow shaft motor 13, the hollow shaft 14 at 15 coaxially with the end face of the grinding sleeve 6 is coupled.
- the hollow shaft 14 of the hollow shaft motor 13 is designed as a rotor with the winding 16; the stator winding 17 is fixed in the arranged on the sleeve 8 flanged housing 18 of the hollow shaft motor and also water-cooled.
- An axial bearing 19 is provided on the end face, which is connected to a pull and push rod 20 is connected via the axial back and forth movements via the thrust bearing 19 on the Grinding shaft 3 can be transmitted, the axial bearing being the free one Rotatability of the grinding sleeve 6 and the grinding shaft slidably arranged therein enables.
- the pull and push rod 20 is on the grinding tool 1st opposite end of the hollow shaft motor 13 out of the housing 18 and connected to a compressed air cylinder 21, the cylinder surfaces on both sides with Compressed air can be acted on, so that the pull and push rod 20 and that Thrust bearing 19 the grinding shaft rotating with the grinding sleeve 6 back and forth in the axial direction can be moved.
- the necessary axial movement is limited to the cup-shaped one Grinding tool 1, the grinding shaft 3 and the pull and push rod 20, i.e. it only relatively small masses are moved (measured on the entire device). It is only when changing the rolls or when changing the grinding tools required to withdraw the entire device from the area of the rollers.
- the piston-cylinder unit 11 is pressurized whereby the sleeve 8 in the direction of arrow 9 together with all the components guided therein is withdrawn, so that the necessary space for those to be carried out Work is created.
- the sleeve 8 is in the Tool holder 10 firmly clamped so that the control movement of the Grinding tool 1 exclusively via the compressed air cylinder 21 with the small ones moving masses takes place.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Description
Claims (8)
- Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen, insbesondere der Arbeitswalzen in Quarto-Walzgerüsten mittels mehrerer über die Ballenlänge der zu schleifenden Walze verteilt nebeneinander angeordneter rotierender topfförmiger Schleifwerkzeuge (1), die zusammen mit dem sie aufnehmenden Werkzeugträger (10) parallel zur Walzenachse oszillierend bewegbar und quer zu dieser unabhängig druckgeregelt anstellbar sind, wobei jedes Schleifwerkzeug (1) separat geschwindigkeitsregelbar drehangetrieben und an einer quer zur Walze axialverschiebbar in dem Werkzeugträger (10) gelagerten Pinole (8) angeordnet ist, die mit Antriebselementen für das topfförmige Schleifwerkzeug (1) verbunden ist, wobei das Schleifwerkzeug (1) an einem Ende der Schleifwelle (3) angeordnet ist und die Schleifwelle (3) an ihrem anderen Ende mit einem regelbaren Verschiebeantrieb (21) für die Schleifwelle (3) versehen ist,
dadurch gekennzeichnet,
daß die Pinole (8) rohrförmig ausgebildet ist und eine drehantreibbare Schleifhülse (6) koaxial umgreift, in der eine drehfest mit der Schleifhülse (6) verbundene Schleifwelle (3) gegenüber der Schleifhülse (6) um geringe Anstellwege axial verschiebar (4) geführt ist, die an ihrem einen freien aus der Schleifhülse (6) herausragenden Ende das Schleifwerkzeug (1) trägt und an ihrem anderen Ende mit einem regelbaren Verschiebeantrieb (21) für die Schleifwelle (3) verbunden ist, der sich seinerseits an der Pinole (8) mittelbar abstützt. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 1,
dadurch gekennzeichnet,
daß als Drehantrieb für Schleifhülse (6) und Schleifwelle (3) ein Hohlwellenmotor (13) vorgesehen ist, dessen mit der Schleifhülse (6) achsgleich gekoppelte Hohlwelle (14) von einer drehfest gelagerten Schub- und Zugstange (20) durchdrungen ist, die mit der Schleifwelle (3) einerseits und mit dem auf der dem Schleifwerkzeug (1) abgewandten Seite des Hohlwellenmotors (13) angeordneten Verschiebeantrieb (21) für die Schleifwelle (3) andererseits derartig verbunden ist, daß die freie Drehbarkeit der Schleifwelle (3) unbeeintächtigt und gleichzeitig ein positionsgenaues Axialverschieben der Schleifwelle (3) durchführbar ist. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 2,
dadurch gekennzeichnet,
daß als Verschiebeantrieb (21) für die Schleifwelle ein regelbarer Druckluftzylinder vorgesehen ist - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 3,
dadurch gekennzeichnet,
daß die während des Schleifbetriebes im Werkzeugträger (10) festklemmbare Pinole (8) beim Walzenwechsel oder zum Ausbau der Schleifwerkzeuge (1) gemeinsam mit Schleifhülse (6), Schleifwelle (3) und Hohlwellenmotor (13) im Werkzeugträger (10) axialverschiebbar ist - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 4,
dadurch gekennzeichnet,
daß die Pinole (8) im Werkzeugträger (10) mit einer geschlossenen Wasserkühlung versehen ist und in jeder beliebigen Position geklemmt werden kann. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach Anspruch 5,
dadurch gekennzeichnet,
daß das Schleifwerkzeug (1) über eine Steilkegelaufnahme in der Schleifwelle (3) schell lösbar befestigt ist. - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß der Hohlwellenmotor (13) ein wassergekühlter Elektromotor ist - Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen nach einem oder mehreren der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
daß zur Abdichtung der Axialbewegung zwischen Schleifhülse (6) und Schleifwelle (3) ein Metall-Faltenbalg vorgesehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19537521A DE19537521C2 (de) | 1995-09-29 | 1995-09-29 | Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen |
DE19537521 | 1995-09-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0765697A1 EP0765697A1 (de) | 1997-04-02 |
EP0765697B1 true EP0765697B1 (de) | 2000-03-15 |
Family
ID=7774364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96250188A Expired - Lifetime EP0765697B1 (de) | 1995-09-29 | 1996-09-05 | Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0765697B1 (de) |
DE (2) | DE19537521C2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19609259C2 (de) * | 1996-02-28 | 1998-07-02 | Mannesmann Ag | Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen |
DE19633855A1 (de) * | 1996-08-16 | 1998-02-19 | Mannesmann Ag | Verfahren und Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen |
CN116214346B (zh) * | 2023-05-06 | 2023-06-30 | 唐山市丰润区大成钢铁有限公司 | 一种热轧钢材的自动加工系统 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0675730B2 (ja) * | 1989-05-19 | 1994-09-28 | 三菱重工業株式会社 | ロールの研削方法 |
DE4409060C3 (de) * | 1994-03-11 | 2000-08-03 | Mannesmann Ag | Vorrichtung zum Nachschleifen eingebauter Walzen |
-
1995
- 1995-09-29 DE DE19537521A patent/DE19537521C2/de not_active Expired - Fee Related
-
1996
- 1996-09-05 EP EP96250188A patent/EP0765697B1/de not_active Expired - Lifetime
- 1996-09-05 DE DE59604658T patent/DE59604658D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59604658D1 (de) | 2000-04-20 |
DE19537521C2 (de) | 1997-09-18 |
EP0765697A1 (de) | 1997-04-02 |
DE19537521A1 (de) | 1997-04-17 |
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