EP1997584B1 - Schleifanordnung - Google Patents

Schleifanordnung Download PDF

Info

Publication number
EP1997584B1
EP1997584B1 EP08150994A EP08150994A EP1997584B1 EP 1997584 B1 EP1997584 B1 EP 1997584B1 EP 08150994 A EP08150994 A EP 08150994A EP 08150994 A EP08150994 A EP 08150994A EP 1997584 B1 EP1997584 B1 EP 1997584B1
Authority
EP
European Patent Office
Prior art keywords
grinding
assembly according
roll
roll shell
outer circumferential
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.)
Not-in-force
Application number
EP08150994A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1997584A3 (de
EP1997584A2 (de
Inventor
Thomas Augscheller
Uwe Matuschczyk
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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 Voith Patent GmbH filed Critical Voith Patent GmbH
Priority to PL08150994T priority Critical patent/PL1997584T3/pl
Publication of EP1997584A2 publication Critical patent/EP1997584A2/de
Publication of EP1997584A3 publication Critical patent/EP1997584A3/de
Application granted granted Critical
Publication of EP1997584B1 publication Critical patent/EP1997584B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • B24B5/50—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground, e.g. strings

Definitions

  • the invention relates to an arrangement for grinding the outer shell surface of a shoe press roll of a machine for producing and / or finishing a paper, cardboard or other fibrous web, wherein the shoe press roll has a flexible roll shell, which is pressed by a pressing element with concave pressing surface to a counter roll ,
  • the surface quality of the roll mantle is of crucial importance.
  • the object of the invention is therefore to extend the life of the roll shell with the simplest possible means and while ensuring the highest possible smoothing effect.
  • this object is achieved in that at least one grinding device with a, with the outer shell surface coming into contact grinding surface is axially traversable on the outer shell surface and the Roll shell on the inside opposite the grinding surface supported on a support bar.
  • the roll shell can be ground in the machine. This extends the life and makes disassembly of the roll shell unnecessary.
  • the support strip In order to enable a flexible contact pressure of the support strip over the length of the roll mantle, the support strip should be designed to be flexible at least in the radial direction (with respect to the roll mantle).
  • the support strip also consist of several axially juxtaposed elements.
  • the support strip should preferably be pressed by pneumatic actuators to the inside of the roll shell.
  • the flexible contact pressure in particular with compressed air, is intended to prevent an overpressing of the roll mantle or a clamping of the roll mantle between the support strip and the grinding surface.
  • the grinding surface should be pressed against the shell outer surface, which is possible because of the support strip.
  • the contact pressure should be between 5 and 50 kPa, preferably between 10 and 30 kPa.
  • This contact pressure of the grinding surface can be controlled away or force controlled.
  • the force-controlled contact pressure is advantageous for a uniform removal during grinding.
  • the grinding device should be arranged in the 3 or 9 o'clock position of the roll shell.
  • the grinding surface can be formed by at least one rotating grinding element, for example a grinding stone or a grinding belt.
  • the abrasive surface should be formed by at least one static abrasive element, preferably a grid screen.
  • a quasi-static grinding element in the form of an abrasive belt may also be advantageous, which is wound up very slowly, preferably continuously, in order to ensure as uniform a grinding sharpness as possible.
  • the roll shell must be set in rotation at least during grinding by a drive.
  • the necessary drive should be arranged in the interest of compactness within the roll shell.
  • An optimal grinding effect results when the speed of the outer shell surface during grinding between 500 and 2000 m / min, preferably between 800 and 1500 m / min.
  • the grinding device has at least two grinding surfaces of different roughness. In this way, machining with the rough and the fine grinding surface without conversion can start from the same grinding device.
  • the average surface roughness of the grinding surfaces should be between 0.1 and 1 .mu.m, preferably between 0.5 and 0.7 .mu.m.
  • the outer surface should be machined one after another with sanding surfaces with grit levels of 80, 120, 220 and 400.
  • the grinding device should have a discharge device for removing the grinding dust, preferably in the form of a suction device.
  • the grinding device has a cooling device for the roll shell. Since the existing plastic, flexible roll shell is relatively sensitive to heat, the heat generated by the grinding should be dissipated, the cooling should preferably be done with air or a fluid.
  • the shoe press roll 3 is a flexible roll shell 4, which is pressed by a hydraulic pressure element 8 with concave pressing surface to the counter roll 5 out.
  • the concave pressing surface leads to the formation of an extended smoothing gap, which allows for an intensive, but volume-saving smoothing.
  • the grinding head 10 of the grinding device 6 is force-controlled by a pressing element 12 against the outer circumferential surface of the roll shell 4.
  • the grinding device 6 is arranged here in the 3 o'clock position of the roll mantle 4.
  • This support strip 2 is made of flexible material and is pressed by a pneumatic actuator 13 over the length of the roll shell 4 flexible to the grinding head 10.
  • the actuator 13 as well as the contact pressure element 8 are supported on the support 7 of the shoe press roll 3.
  • the grinding device 6 is arranged axially traversable along the roll shell 4.
  • the grinding device 6 moves during grinding in a direction pointing from the finer grinding surface 9a to the rougher grinding surface 9b.
  • the grinding head 10 should delimit the space with the grinding surfaces 9 from the environment, which can be improved by elastic seals 14 between the grinding head 10 and the roll shell 4.
  • the roll shell 4 Since the grinding surfaces 9 are fixed here in the form of a grid screen, the roll shell 4 must be driven at least during grinding.
  • the rotation is to be chosen so that the speed of the outer circumferential surface of the roll shell 4 is between 800 and 1500 m / min.
  • the mean roughness of the grinding surfaces 9 is between 0.5 and 0.7 microns.
  • the grinding head 10 is further connected via a connection 11 with a suction device. Their negative pressure causes the extraction of the grinding dust and the air heated by the grinding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Polarising Elements (AREA)
  • Disintegrating Or Milling (AREA)
EP08150994A 2007-05-26 2008-02-04 Schleifanordnung Not-in-force EP1997584B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08150994T PL1997584T3 (pl) 2007-05-26 2008-02-04 Układ do szlifowania

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007024810A DE102007024810A1 (de) 2007-05-26 2007-05-26 Schleifanordnung

Publications (3)

Publication Number Publication Date
EP1997584A2 EP1997584A2 (de) 2008-12-03
EP1997584A3 EP1997584A3 (de) 2009-03-04
EP1997584B1 true EP1997584B1 (de) 2010-05-05

Family

ID=39577864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08150994A Not-in-force EP1997584B1 (de) 2007-05-26 2008-02-04 Schleifanordnung

Country Status (4)

Country Link
EP (1) EP1997584B1 (pl)
AT (1) ATE466689T1 (pl)
DE (2) DE102007024810A1 (pl)
PL (1) PL1997584T3 (pl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025242408A1 (de) 2024-05-23 2025-11-27 Andritz Ag Anordnung und verfahren zum betrieb eines belts in einer maschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103358197A (zh) * 2013-07-22 2013-10-23 天长市天力液压机械有限责任公司 一种胶辊磨床
CN103949476B (zh) * 2014-04-24 2016-01-06 邯钢集团邯宝钢铁有限公司 一种热轧板带轧机支撑辊磨削量快速预测方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3102526C2 (de) * 1981-01-27 1985-05-23 J.M. Voith Gmbh, 7920 Heidenheim Preßeinrichtung zum Entwässern von Bahnen, insbesondere Papierbahnen
DE29915022U1 (de) * 1999-08-27 1999-10-21 Schmötzer, Hubert, 74653 Ingelfingen Vorrichtung zur materialabtragenden Bearbeitung der Mantelfläche von zylindrischen Walzen einer Druckmaschine
JP2003213590A (ja) * 2001-11-12 2003-07-30 Mitsubishi Heavy Ind Ltd 紙シートのカレンダ装置
FI117791B (fi) * 2005-06-17 2007-02-28 Metso Paper Inc Menetelmä taipuma-aseteltava telan hiomiseksi

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025242408A1 (de) 2024-05-23 2025-11-27 Andritz Ag Anordnung und verfahren zum betrieb eines belts in einer maschine

Also Published As

Publication number Publication date
DE502008000609D1 (de) 2010-06-17
ATE466689T1 (de) 2010-05-15
PL1997584T3 (pl) 2010-10-29
EP1997584A3 (de) 2009-03-04
DE102007024810A1 (de) 2008-11-27
EP1997584A2 (de) 2008-12-03

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