EP0824975A1 - Procédé et dispositif pour la rectification in-situ des rouleaux de cage de laminage de bandes à chaud - Google Patents

Procédé et dispositif pour la rectification in-situ des rouleaux de cage de laminage de bandes à chaud Download PDF

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Publication number
EP0824975A1
EP0824975A1 EP97250235A EP97250235A EP0824975A1 EP 0824975 A1 EP0824975 A1 EP 0824975A1 EP 97250235 A EP97250235 A EP 97250235A EP 97250235 A EP97250235 A EP 97250235A EP 0824975 A1 EP0824975 A1 EP 0824975A1
Authority
EP
European Patent Office
Prior art keywords
grinding
regrinding
roll
hot strip
rolling stands
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.)
Withdrawn
Application number
EP97250235A
Other languages
German (de)
English (en)
Inventor
Dieter Dipl.-Ing. Figge
Peter Dipl.-Ing. Jollet
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.)
SMS Siemag AG
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0824975A1 publication Critical patent/EP0824975A1/fr
Withdrawn legal-status Critical Current

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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
    • B24B5/36—Single-purpose machines or devices
    • B24B5/363—Single-purpose machines or devices for grinding surfaces of revolution in situ
    • 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
    • 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
    • B24B5/37—Single-purpose machines or devices for grinding rolls, e.g. barrel-shaped rolls

Definitions

  • the invention relates to a working method and a device for carrying it out a working process for regrinding in hot strip mill stands built-in rollers by means of cup-shaped rotating driven grinding tools, which can be moved in an oscillating manner parallel to the roller axis, the grinding tool at the end of a rotationally driven grinding shaft that can be moved axially across the roller is attached, which is guided coaxially in an abrasive sleeve and at its opposite End with a sliding drive supported on the abrasive sleeve is connected, the intended contact pressure of the grinding tools to the Roller is applied by displacement drives.
  • Such a device known from DE 44 09 060 A1, is provided for the rolls installed in the hot strip mill, in particular the work rolls Reground in four-high mill stands.
  • the bale length of the grinding roller of distributed cup-shaped grinding tools which together with the tool holder receiving them parallel to the roll axis can be moved in an oscillating manner and adjusted independently of it in a pressure-controlled manner, the contour of the roller can be reworked when installed in the roll stand speed, each grinding tool can be controlled separately is driven by rotation.
  • the known one strikes to position the grinding tools against the roller Solution before, the quills with the tools, with the help of piston-cylinder units to move in the longitudinal direction and thereby control the path of the tool.
  • the piston-cylinder units are pressure and displacement controlled so that each Grinding position and any grinding pressure can be driven.
  • the rotary drives for the grinding tools preferably electric motors, are each on the Grinding tool arranged opposite end of the quill.
  • the size of the contact pressure determines the Removal rate of the grinding process. Especially when grinding with several Grinding wheels on a roller must have the same contact pressure on each wheel, thus at the transition points between the paths of the individual grinding heads Even after long grinding times, there are no diameter differences on the roller arise. Differences in diameter on the roller mean a jump in the Surface that leads to non-planar strips and thus to rejects.
  • the method the application and forwarding of the contact pressure is very important for high Grinding quality of the roller.
  • a Working method and an apparatus for performing this method create with which the contact pressure of the grinding tools on the roller exactly can be regulated to ensure a high quality surface of the roller to generate pressure and displacement-controlled grinding.
  • a working method is proposed according to the invention, that is characterized in that the intended contact pressure of the Grinding tools on the roller by means of compressed air supplied by the sliding drives is applied, which corresponds to the desired contact pressure Preset pressure is changed within a narrow range until the on the Drive motors for the rotating driven grinding tools measured Torques of all grinding tools are the same and constant.
  • the proposed working method enables an even removal rate when using two or more grinding tools.
  • the removal rate of the grinding tool can be determined using the torque of the Detect the drive. In a favorable embodiment it is therefore provided that Torque of the grinding tool via the current consumption of its drive motor to eat. If both motor currents of the drive motors are kept constant, one can assume that the removal rate of the two grinding tools is also constant. This method can be used for even grinding ensured and paragraphs on the roll surfaces to be processed can be reliably avoided.
  • a device for carrying out the working method described above is characterized in that the sliding drive as a force-controlled low-friction air cylinder is designed with a ball-guided rod that the The grinding shaft in the grinding sleeve is also axially low-friction via ball guides is guided and that the weight of the grinding head by at least one other effectively between the grinding sleeve and one receiving housing part arranged low-friction air cylinder
  • the air cylinders are preferably roller membrane cylinders executed. However, if the strokes become too large and, due to the design, not included Roll membrane cylinders can be designed, so double-acting Air cylinders used, which are equipped with low-friction seals and roller guides are.
  • the air-operated piston-cylinder unit is installed stationary the rear end of the grinding tool and passes the contact pressure over two Thrust bearing on the rotating grinding shaft.
  • the low-friction are axially displaceable.
  • Weight forces are generated by a second unit, also with a roller guide, balanced, so that with the proposal of the invention both friction and Weight differences are largely compensated.
  • the solution according to the invention represents a significant improvement over a conventional solution, in which Moving the grinding shaft inevitably involves considerable frictional forces this and the grinding sleeve occur. Further frictional forces arise on the Piston-cylinder units through the piston seals and rod seals. These frictional forces act in different ways when the grinding shaft is moved Direction, since the grinding tool is usually installed at an angle in the scaffold.
  • a position measuring system for the Axial displacement of the grinding tool is provided. This makes it possible to control the roll surface removed by the grinding tool, e.g. in order to be able to produce spherical roller contours.
  • the differences in force to be measured on the grinding tool very small with different directions of movement.
  • the removed material volumes be almost the same, i.e. the left and right grinding tools are turned on grind a surface of the roller with almost no heel.
  • Still existing Differences can be compensated for by the controller, for example in the middle area of the roller, where the grinding paths of the grinding tools overlap, working with reduced contact pressure.
  • FIG. 2 is roughly schematic in one Housing 1, the tubular grinding sleeve 2 at 3 rotatably and coaxially slidably guided.
  • the grinding shaft 4 is in sliding guides 5 in the grinding sleeve axially slidably mounted at the front end at 6 attached to the front cup-shaped grinding tool 7 carries.
  • the air-operated piston-cylinder unit 8 is provided to the the end of the grinding sleeve facing away from the cup-shaped grinding tool 7 and via the push rod 9 and a thrust bearing 10 which enables rotation shifting of the rotationally driven grinding shaft 4 allows.
  • the grinding shaft 4 and the grinding sleeve 2 are parallel keys 21 for rotary driving intended.
  • the piston-cylinder unit 8 can be acted on on both sides, so that a axial displacement of the grinding shaft 4 in both directions is possible.
  • the motor shaft at 22 is coupled to the grinding sleeve 2.
  • FIG. 1 A solution according to the invention for small strokes is shown in FIG. 1.
  • the Grinding shaft 4 is in the invention in the grinding sleeve 2 low friction over a Ball guide 13 out.
  • the contact pressure of the cup-shaped grinding tool 7 is applied by a roller membrane air cylinder 14, the ball-guided rod 15 is also guided with low friction in a roller guide.
  • the weight forces as a result the grinding tool inclination are controlled by a second roll diaphragm air cylinder 16-also with low-friction guidance 17- compensated.
  • Parallel to the a two measuring membrane air cylinders 16 and 14, a displacement measuring system 18 is installed.
  • Weight share 21.0 kp Friction grinding shaft in the grinding sleeve -2.0 kp

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP97250235A 1996-08-16 1997-08-12 Procédé et dispositif pour la rectification in-situ des rouleaux de cage de laminage de bandes à chaud Withdrawn EP0824975A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19633855A DE19633855A1 (de) 1996-08-16 1996-08-16 Verfahren und Vorrichtung zum Nachschleifen der in Warmbandwalzgerüsten eingebauten Walzen
DE19633855 1996-08-16

Publications (1)

Publication Number Publication Date
EP0824975A1 true EP0824975A1 (fr) 1998-02-25

Family

ID=7803335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97250235A Withdrawn EP0824975A1 (fr) 1996-08-16 1997-08-12 Procédé et dispositif pour la rectification in-situ des rouleaux de cage de laminage de bandes à chaud

Country Status (3)

Country Link
US (1) US5957756A (fr)
EP (1) EP0824975A1 (fr)
DE (1) DE19633855A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025904A1 (de) 2010-07-02 2012-01-05 Sms Siemag Ag Poliervorrichtung
CN102689243A (zh) * 2012-06-13 2012-09-26 鞍钢股份有限公司 一种炉辊磨削方法

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1251997B2 (fr) * 2000-02-03 2011-06-08 Carl Zeiss Vision GmbH Tete de polissage pour une polisseuse
FI108930B (fi) * 2000-12-22 2002-04-30 Rolltest Oy Hiontamenetelmä
US6835115B2 (en) * 2000-12-22 2004-12-28 Rolltest Oy Grinding method
US6827530B2 (en) * 2001-07-10 2004-12-07 Self Leveling Machines, Inc. Symmetrical mill
KR101177346B1 (ko) 2003-12-23 2012-09-07 다이아몬드 이노베이션즈, 인크. 롤 그라인딩 애플리케이션용 그라인딩 휠 및 이의 롤그라인딩 방법
AT505392B1 (de) * 2007-09-12 2009-01-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zum reinigen der mantelfläche einer walze oder rolle
DE202008016454U1 (de) * 2008-06-17 2009-03-05 Satisloh Gmbh Werkzeug zum Polieren und Feinschleifen von optisch wirksamen Flächen in der Feinoptik
CN101867251B (zh) * 2010-06-11 2012-09-19 亚意达(南京)石材机械有限公司 磨头电机
DE102011014230A1 (de) * 2011-03-17 2012-09-20 Satisloh Ag Vorrichtung zur Feinbearbeitung von optisch wirksamen Flächen an insbesondere Brillengläsern
CN102847718B (zh) * 2012-08-17 2015-06-17 中冶南方工程技术有限公司 一种冷轧不锈钢平整轧制机轧辊表面清洁工艺及装置
CN204673476U (zh) * 2015-05-06 2015-09-30 林中尉 恒力浮动动力头机构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135609A (en) * 1983-02-25 1984-09-05 Ishikawajima Harima Heavy Ind Grinding machine for use with the rolls of rolling mills
DE3542817A1 (de) * 1985-12-04 1987-06-11 Wesero Maschinenbau Gmbh Verfahren zur steuerung der zustellung einer buerstmaschine
EP0496303A1 (fr) * 1991-01-24 1992-07-29 Shin-Etsu Handotai Company Limited Rectifieuse pour rectification cylindrique d'un lingot cristallin brut de croissance
EP0573035A2 (fr) * 1992-06-03 1993-12-08 Hitachi, Ltd. Laminoir avec système à rectifier les cylindres connecté et meule
US5355631A (en) * 1992-11-19 1994-10-18 Robotics And Automation Corporation Regulated force and speed control of a surface treating wheel
DE4409060A1 (de) * 1994-03-11 1995-09-21 Mannesmann Ag Vorrichtung zum Nachschleifen eingebauter Walzen
EP0765697A1 (fr) * 1995-09-29 1997-04-02 MANNESMANN Aktiengesellschaft Dispositif pour la rectification in-situ des rouleaux d'une cage de laminage à chaud pour bandes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353302A (en) * 1965-11-23 1967-11-21 Mesta Machine Co Roll grinders
JPS60184411A (ja) * 1984-03-05 1985-09-19 Nippon Steel Corp 圧延設備におけるロ−ル研削装置
US4716687A (en) * 1985-02-22 1988-01-05 Mitsubishi Jukogyo Kabushiki Kaisha Method and apparatus for grinding a rotary body
DE3631146A1 (de) * 1986-09-12 1988-03-24 Kocks Technik Vorrichtung zur spanabhebenden arbeitsflaechenbearbeitung von walzen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135609A (en) * 1983-02-25 1984-09-05 Ishikawajima Harima Heavy Ind Grinding machine for use with the rolls of rolling mills
DE3542817A1 (de) * 1985-12-04 1987-06-11 Wesero Maschinenbau Gmbh Verfahren zur steuerung der zustellung einer buerstmaschine
EP0496303A1 (fr) * 1991-01-24 1992-07-29 Shin-Etsu Handotai Company Limited Rectifieuse pour rectification cylindrique d'un lingot cristallin brut de croissance
EP0573035A2 (fr) * 1992-06-03 1993-12-08 Hitachi, Ltd. Laminoir avec système à rectifier les cylindres connecté et meule
US5355631A (en) * 1992-11-19 1994-10-18 Robotics And Automation Corporation Regulated force and speed control of a surface treating wheel
DE4409060A1 (de) * 1994-03-11 1995-09-21 Mannesmann Ag Vorrichtung zum Nachschleifen eingebauter Walzen
EP0765697A1 (fr) * 1995-09-29 1997-04-02 MANNESMANN Aktiengesellschaft Dispositif pour la rectification in-situ des rouleaux d'une cage de laminage à chaud pour bandes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025904A1 (de) 2010-07-02 2012-01-05 Sms Siemag Ag Poliervorrichtung
WO2012001032A1 (fr) 2010-07-02 2012-01-05 Sms Siemag Ag Dispositif de polissage
CN102689243A (zh) * 2012-06-13 2012-09-26 鞍钢股份有限公司 一种炉辊磨削方法

Also Published As

Publication number Publication date
US5957756A (en) 1999-09-28
DE19633855A1 (de) 1998-02-19

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