EP0035627A2 - Method of regrinding a roll - Google Patents

Method of regrinding a roll Download PDF

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Publication number
EP0035627A2
EP0035627A2 EP81100257A EP81100257A EP0035627A2 EP 0035627 A2 EP0035627 A2 EP 0035627A2 EP 81100257 A EP81100257 A EP 81100257A EP 81100257 A EP81100257 A EP 81100257A EP 0035627 A2 EP0035627 A2 EP 0035627A2
Authority
EP
European Patent Office
Prior art keywords
roll
roller
grinding
regrinding
temperature
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.)
Granted
Application number
EP81100257A
Other languages
German (de)
French (fr)
Other versions
EP0035627B1 (en
EP0035627A3 (en
Inventor
Horst Dipl.-Ing. Heinen
Klaus Dipl.-Ing. Kühn
Wilhelm Dr. Rer. Nat. Tappe
Friedrich Ing. Grad. Zahn
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.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Hoesch Werke AG
Hoesch 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 Hoesch Werke AG, Hoesch AG filed Critical Hoesch Werke AG
Priority to AT81100257T priority Critical patent/ATE5571T1/en
Publication of EP0035627A2 publication Critical patent/EP0035627A2/en
Publication of EP0035627A3 publication Critical patent/EP0035627A3/en
Application granted granted Critical
Publication of EP0035627B1 publication Critical patent/EP0035627B1/en
Expired 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/14—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the temperature during grinding

Definitions

  • the invention relates to a method for regrinding a roller with uneven wear and uneven temperature distribution over the length of the bale.
  • rollers must, for. B, cool in the air to full temperature compensation, which takes time and thus means large roller parks and capital tied up. These large roll parks must be available so that finished rolls are always available.
  • the invention has for its object to provide a method for regrinding a roller of the type mentioned, which manages without equalizing the temperature over the bale length of the roller before or during regrinding, which also significantly reduces the number of rolls of a flat rolling mill without that the necessary availability of finished ground rolls is reduced,
  • the task is solved in such a way that the different temperatures over the bale length of the roller on the grinding machine are measured by temperature sensors and entered into a computer which controls the infeed of the grinding wheel for a given roller diameter, roller material and desired grinding.
  • a roller 1 with any temperature distribution and any wear over its bale length was placed on a grinding machine 2 immediately after removal from a roll stand (not shown). Before the start of grinding, the temperature distribution over the bale length of measuring sensors 3 is measured. These temperature values and their position on the bale length of the roller 1 are fed to a computer 4, which forms a temperature profile of the roller 1 therefrom. Depending on the diameter entered into the computer 4 via the input device 5 at room temperature and the thermal expansion coefficient of the roller 1, the computer 4 determines the wear profile of the roller 1 to be ground and calculates the desired roller profile (hollow or spherical grinding with defined dimensions), which has also been entered. the necessary grinding curve and then controls the grinding wheel 6.

Abstract

1. Method of regrinding a roll (1) having irregular wear and irregular temperature distribution over its body length, characterized in that the differing temperatures over the body length of the roll (1) on the grinding machine (2) are measured by temperature sensor means and are fed to a computer (4) which controls the setting up of the grinding wheel (5) based upon preset values of roll diameter, roll material and desired ground profile.

Description

Die Erfindung betrifft ein Verfahren zum Nachschleifen einer Walze mit ungleichmäßigem Verschleiß und ungleichmäßiger Temperaturverteilung über die Ballenlänge.The invention relates to a method for regrinding a roller with uneven wear and uneven temperature distribution over the length of the bale.

In allen Flachwalzwerken müssen die Walzen nach einer bestimmten Zeit in den Walzenwerkstätten nachgeschliffen werden. Dieses Nachschleifen bezweckt, die beim Walzprozeß aufgetretene Abnutzung der Walzenoberfläche zu überarbeiten und die Walzenoberfläche und die Walzenfonn (Hohl- oder Balligschliff) wieder in den walztechnologisch notwendigen Zustand zu brmgen.In all flat rolling mills, the rollers have to be reground after a certain time in the roller workshops. The purpose of this regrinding is to revise the wear on the roll surface that occurred during the rolling process and to brake the roll surface and the roll form (hollow or spherical grinding) back into the condition required by rolling technology.

Dazu müssen die Walzen z. B, an der Luft bis zum vollen Tenperaturausgleich abkühlen, was Zeit in Anspruch nimmt und somit große Wälzenparks und Bindung von Kapital bedeutet. Diese großen Walzenparks müssen vorhanden sein, damit immer fertig geschliffene Walzen zur Verfügung stehen.To do this, the rollers must, for. B, cool in the air to full temperature compensation, which takes time and thus means large roller parks and capital tied up. These large roll parks must be available so that finished rolls are always available.

Um die Abkühlzeiten der Walzen zu verkürzen, hat nan bereits Walzenkühleinrichtungen geschaffen, in denen die Walzen nach dem Ausbau aus den Walzgerüsten mit Wasser od. dgl. behandelt werden. Diese Einrichtungen sind aber sehr flächenintensiv und transportaufwendig und führen zu keinen zufriedenstellenden Ergebnissen.In order to shorten the cooling times of the rolls, nan has already created roll cooling devices in which the rolls are treated with water or the like after removal from the roll stands. However, these facilities are very space-intensive and transport-intensive and do not lead to satisfactory results.

Aus der DE-AS 23 10 483 ist ein Verfahren und eine Vorrichtung zum Nachschleifen von Walzen bekannt, bei dem während des Schleifvorganges mittels differenzierter Kühlmittelzufuhr eine Vergleichmäßigung der Temperatur der Walze erreicht werden soll. Dieses Verfahren kann jedoch keine definierten Walzenprofile nach Beendigung des Schleifvorganges garantieren, da die Tenperaturverteilung über die Walzenballenlänge nur geschätzt werden kann und nicht mit Sicherheit eine homogene Temperatur nach Schleifende vorliegt.From DE-AS 23 10 483 a method and a device for regrinding of rolls is known, in which an equalization of the temperature of the roll is to be achieved during the grinding process by means of differentiated coolant supply. However, this process cannot guarantee defined roll profiles after the grinding process has ended, since the temperature distribution over the length of the roll can only be estimated and there is no certainty that the temperature will be homogeneous after the grinding has ended.

Von daher liegt der Erfindung die Aufgabe zugrunde, ein Verfahren zum Nachschleifen einer Walze der eingangs genannten Art zu schaffen, das ohne Vergleichmäßigung der Temperatur über die Ballenlänge der Walze vor dem bzw, beim Nachschleifen auskommt, das außerdem den Walzenpark eines Flachwalzwerkes entscheidend verringert, ohne daß die notwendige Verfügbarkeit von fertig geschliffenen Walzen reduziert wird,Therefore, the invention has for its object to provide a method for regrinding a roller of the type mentioned, which manages without equalizing the temperature over the bale length of the roller before or during regrinding, which also significantly reduces the number of rolls of a flat rolling mill without that the necessary availability of finished ground rolls is reduced,

Nach der Erfhdung wird die Aufgabe in der Weise gelöst, daß die unterschiedlichen Temperaturen über die Ballenlänge der Walze auf der Schleifmschine durch Temperaturfühler gemessen und einem Rechner eingegeben werden, der bei vorgegebenem Walzendurchmesser, Walzenmaterial und gewünschtem Schliff die Zustellung der Schleifscheibe steuert.According to the invention, the task is solved in such a way that the different temperatures over the bale length of the roller on the grinding machine are measured by temperature sensors and entered into a computer which controls the infeed of the grinding wheel for a given roller diameter, roller material and desired grinding.

Die Vorteile des Verfahrens nach der Erfindung sind insbesondere darin zu sehen, daß es keinerlei Wartezeiten zwischen Ausbau der Walze aus dem Walzgerüst und Schleifbeginn erfordert und einen genauen Walzenschliff bei beliebigem Tenperaturprofil der Walze ermöglicht, wodurch der Walzenpark mindestens um die Anzahl Walzen reduziert werden kann, die jeweils im Zwischenlager zum Zwecke des Temperturausgleiches gelagert sind,The advantages of the method according to the invention are to be seen in particular in the fact that there are no waiting times between removal of the roll from the roll stand and the start of grinding, and an exact roll grinding with any desired temperature profile of the roll, whereby the roll park can be reduced by at least the number of rolls, which are stored in the interim storage facility for the purpose of temperature compensation,

Im folgenden wird die Erfindung anhand einer Zeichnung näher erläutert.The invention is explained in more detail below with reference to a drawing.

Eine Walze 1 mit beliebiger Temperaturverteilung und beliebigem Verschleiß über ihre Ballenlänge ist direkt nach dem Ausbau aus einem nicht dargestellten Walzgerüst auf eine Schleifmaschine 2 aufgesetzt worden. Vor Schleifbeginn wird die Temperaturverteilung üb er die Ballenlänge von Msßfühlern 3 gemessen, Diese Temperaturwerte und ihre Position auf der Ballenlänge der Walze 1 werden einem Rechner 4 zugeführt, der daraus ein Temperaturprofil der Walze 1 bildet. In Abhängigkeit von dem über die Eingabevorrichtung 5 in den Rechner 4 eingegebenen Durchmesser bei Raumtemperatur und dem Wärmeausdehnungskoeffizienten der Walze 1 bestimnt der Rechner 4 das Verschleißprofil der zu schleifenden Walze 1 und errechnet über das ebenfalls eingegebene gewünschte Walzenprofil (Hohl- oder Balligschliff mit definierten Abmessungen) die notwendige Schleifkurve und steuert danach die Schleifscheibe 6.A roller 1 with any temperature distribution and any wear over its bale length was placed on a grinding machine 2 immediately after removal from a roll stand (not shown). Before the start of grinding, the temperature distribution over the bale length of measuring sensors 3 is measured. These temperature values and their position on the bale length of the roller 1 are fed to a computer 4, which forms a temperature profile of the roller 1 therefrom. Depending on the diameter entered into the computer 4 via the input device 5 at room temperature and the thermal expansion coefficient of the roller 1, the computer 4 determines the wear profile of the roller 1 to be ground and calculates the desired roller profile (hollow or spherical grinding with defined dimensions), which has also been entered. the necessary grinding curve and then controls the grinding wheel 6.

Claims (1)

Verfahren zum Nachschleifen einer Walze mit ungleichmäßigem Verschleiß und ungleichmäßiger Temperaturverteilung über die Ballenlänge,
dadurch gekennzeichnst, daß die unterschiedlichen Temperaturen über
die Ballenlänge der Walze auf der Schleifmaschine durch Temperaturfühler gemessen und einem Rechner eingegeben werden, der bei vorgegebenem Walzendurchmesser, Walzenmaterial und gewünschtem Schliff die Zustellung der Schleifscheibe steuert.Process for regrinding a roller with uneven wear and uneven temperature distribution over the length of the bale,
characterized in that the different temperatures over
the bale length of the roller on the grinding machine is measured by temperature sensors and entered into a computer that controls the infeed of the grinding wheel for a given roller diameter, roller material and desired grinding.
EP81100257A 1980-03-11 1981-01-15 Method of regrinding a roll Expired EP0035627B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100257T ATE5571T1 (en) 1980-03-11 1981-01-15 PROCEDURE FOR REGRINDING A ROLLER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3009180 1980-03-11
DE3009180A DE3009180C2 (en) 1980-03-11 1980-03-11 Control device for feeding the longitudinally displaceable grinding wheel of a roll grinding machine

Publications (3)

Publication Number Publication Date
EP0035627A2 true EP0035627A2 (en) 1981-09-16
EP0035627A3 EP0035627A3 (en) 1982-03-24
EP0035627B1 EP0035627B1 (en) 1983-12-14

Family

ID=6096784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100257A Expired EP0035627B1 (en) 1980-03-11 1981-01-15 Method of regrinding a roll

Country Status (4)

Country Link
EP (1) EP0035627B1 (en)
JP (1) JPS56152560A (en)
AT (1) ATE5571T1 (en)
DE (1) DE3009180C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5371975A (en) * 1990-01-04 1994-12-13 E. Lundmark Industrimatningar Process and device for machine-working or rolls and similar workpieces
EP0810067A1 (en) * 1996-05-31 1997-12-03 Toshiba Kikai Kabushiki Kaisha Method of and instrument for measuring roll diameter in roll grinder
US6558002B1 (en) 1995-04-07 2003-05-06 Seiko Epson Corporation Image projection system and a method of controlling a projected pointer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI61738C (en) * 1981-03-19 1982-09-10 Valmet Oy FOERFARANDE VID TILLVERKNING AV STENVALS FOER PAPPERSMASKIN
JP2592082B2 (en) * 1987-12-29 1997-03-19 東芝機械株式会社 Grinding control method in roll grinder
JP4998731B2 (en) * 2007-10-22 2012-08-15 Ｊｆｅスチール株式会社 Rolling roll grinding method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310483B1 (en) * 1973-03-02 1974-07-25 Krupp Ag Huettenwerke Method and device for regrinding a roller heated unevenly over its entire length
DE2261389B2 (en) * 1972-12-15 1977-11-10 Kugelfischer Georg Schäfer & Co, 8720 Schweinfurt WORKPIECE MEASUREMENT
JPS5357596A (en) * 1976-11-04 1978-05-24 Sumitomo Metal Ind Ltd Grinding method of roll
SU629044A1 (en) * 1977-05-23 1978-10-25 Предприятие П/Я В-8406 Roll-grinding method
DE2747883B2 (en) * 1977-10-26 1980-01-03 Wilhelm Hegenscheidt, Gmbh, 5140 Erkelenz Method for producing a hole

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2261389B2 (en) * 1972-12-15 1977-11-10 Kugelfischer Georg Schäfer & Co, 8720 Schweinfurt WORKPIECE MEASUREMENT
DE2310483B1 (en) * 1973-03-02 1974-07-25 Krupp Ag Huettenwerke Method and device for regrinding a roller heated unevenly over its entire length
JPS5357596A (en) * 1976-11-04 1978-05-24 Sumitomo Metal Ind Ltd Grinding method of roll
SU629044A1 (en) * 1977-05-23 1978-10-25 Предприятие П/Я В-8406 Roll-grinding method
DE2747883B2 (en) * 1977-10-26 1980-01-03 Wilhelm Hegenscheidt, Gmbh, 5140 Erkelenz Method for producing a hole

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN Band 2, Nr. 87, 15. Juli 1978 seite 2517M78 & JP-A-53-57596 *
Soviet Invention Illustrated Week B31, 17. September 1979 Section P61 & SU-A-629044 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5371975A (en) * 1990-01-04 1994-12-13 E. Lundmark Industrimatningar Process and device for machine-working or rolls and similar workpieces
US6558002B1 (en) 1995-04-07 2003-05-06 Seiko Epson Corporation Image projection system and a method of controlling a projected pointer
US6814444B2 (en) 1995-04-07 2004-11-09 Seiko Epson Corporation Image projection system and a method of controlling a projected pointer
US7059724B2 (en) 1995-04-07 2006-06-13 Seiko Epson Corporation Image projection system and a method of controlling a projected pointer
US8746893B2 (en) 1995-04-07 2014-06-10 Seiko Epson Corporation Image projection system and a method of controlling a projected pointer
US8985778B2 (en) 1995-04-07 2015-03-24 Seiko Epson Corporation Image projection system and a method of controlling a projected pointer
EP0810067A1 (en) * 1996-05-31 1997-12-03 Toshiba Kikai Kabushiki Kaisha Method of and instrument for measuring roll diameter in roll grinder

Also Published As

Publication number Publication date
DE3009180C2 (en) 1982-04-15
EP0035627B1 (en) 1983-12-14
DE3009180A1 (en) 1981-09-17
JPS56152560A (en) 1981-11-26
EP0035627A3 (en) 1982-03-24
ATE5571T1 (en) 1983-12-15

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