EP2030515B1 - Dispositif et procédé de ponçage de lames de coupe - Google Patents

Dispositif et procédé de ponçage de lames de coupe Download PDF

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Publication number
EP2030515B1
EP2030515B1 EP08014676A EP08014676A EP2030515B1 EP 2030515 B1 EP2030515 B1 EP 2030515B1 EP 08014676 A EP08014676 A EP 08014676A EP 08014676 A EP08014676 A EP 08014676A EP 2030515 B1 EP2030515 B1 EP 2030515B1
Authority
EP
European Patent Office
Prior art keywords
rotation
grinding wheel
speed
cutting blade
grinding
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
EP08014676A
Other languages
German (de)
English (en)
Other versions
EP2030515A2 (fr
EP2030515A3 (fr
Inventor
Hans-Jürgen Steiner
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.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau 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 Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Priority to PL08014676T priority Critical patent/PL2030515T3/pl
Publication of EP2030515A2 publication Critical patent/EP2030515A2/fr
Publication of EP2030515A3 publication Critical patent/EP2030515A3/fr
Application granted granted Critical
Publication of EP2030515B1 publication Critical patent/EP2030515B1/fr
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
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/368—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades installed as an accessory on another machine
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/28—Cutting-off the tobacco rod
    • A24C5/30—Machines combined with devices for grinding the knives
    • 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
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/46—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of disc blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening the cutting member

Definitions

  • the invention relates to a cigarette manufacturing and / or filter attachment machine with a device for. Grinding rotary cutting knives for cutting rod-shaped articles in the tobacco processing industry, comprising at least one rotating grinding wheel. Furthermore, the invention relates to a method of grinding rotary cutting knives for cutting rod-shaped articles in cigarette manufacturing and / or filter attachment machines of the tobacco processing industry, wherein at least one rotating grinding wheel can be brought into touching abrasive engagement with the cutting blade.
  • This document shows a device for grinding fixed-axis rotation measuring instruments which operate in cigar packing machines and comprises a pair of coaxial grinding wheels, each having a rotational axis have corresponding distance from each other and are arranged obliquely to the plane of the rotary blade to be ground, rotatable about its own axis and positioned relative to the rotary knife.
  • the grinding wheels are supported by a support which is movable along a straight path parallel to the plane of the rotary knife and is displaced by drive means serving as an actuator which are controlled by automatic and programmable control and drive means according to wear or reduction of the degree of rotation of the rotary knife depend.
  • the known grinding apparatus has scanning means capable of indicating the state of complete wear of the rotary knife corresponding to the minimum diameter for use of the rotary knife to cause the drive means to stop in this case.
  • the scanning means respond to a predetermined end position of the support and therefore serve as a limit switch, which prevents further advancement of the support and thus the grinding wheels and thereby simultaneously indicates a signal for the end of the diameter of the rotary knife.
  • control and drive means of the known device can also be programmed not only on the basis of the assumed wear or the reduction of the degree of rotation of the rotary knife, but after the detected wear of the rotary knife;
  • scanning means could be provided, which detect the change in the angular velocity of the grinding wheels, which is due to a partial loss of adhesion to the grinding blade to be ground.
  • the DE 33 24 262 C2 describes a device for sharpening rotary cutting blades, in which the sharpening is to be done automatically depending on the wear.
  • the wear is to be determined by the fact that the contact pressure of the grinding wheel is determined indirectly by detecting the rotational speed of the cutting blade, with which the grinding wheel is in touching loop engagement.
  • the EP-B 1 213 105 The applicant describes a cutting device and a method for changing cutting means, in which inter alia, an optical instrument, such as a laser diode is provided, which determines the diameter or the edge of the knife.
  • an optical instrument such as a laser diode
  • the DE-OS 102 05 146 discloses an optical scanning device for determining the wear on the cutting blade.
  • a production release signal is only generated when the grinding wheel has reached a predefinable percentage of a desired rotational speed or actual rotational speed of the cutting blade that can be adapted to the individual conditions of the respective device.
  • the rotational speed of the grinding wheel neither detected nor compared with a desired rotational speed or actual rotational speed of the cutting blade.
  • the invention has further recognized that this independence of the production release of the aforementioned speed ratio can lead to the fact that the production of the rod-shaped article is also released or if the rotational speeds of the cutting blade and grinding wheel differ from each other so that it is insufficient Grinding the knives and thus resulting in insufficient sharpness of the knife, which in turn has an unclean cut and consequently unclean or poorly cut rod-shaped items in the production result. This possible loss of quality in the finished products must not be tolerated thanks to the present invention.
  • the grinding wheel with its rotational or peripheral speed at least compared to a desired quality requirements ensuring target rotational speed, preferably to a desired rotational speed of the cutting blade, more preferably to an actual rotational speed of the cutting blade must reach before the production is released by the production release signal according to the invention.
  • target rotational speed preferably to a desired rotational speed of the cutting blade
  • more preferably to an actual rotational speed of the cutting blade must reach before the production is released by the production release signal according to the invention.
  • the invention proves to be particularly advantageous if the device for grinding, for example, had to be stopped due to a change of the cutting blade or the grinding wheel that had become necessary and is raised again after the change has taken place.
  • the rotational speed of the cutting blade and thus also the adjacent grinding wheel is granted production approval only after reaching the desired percentage.
  • the signal generating device is expediently connected to a production release device for releasing the production, so that the production release device, which is provided, for example, in the associated cigarette manufacturing or filter attachment machine, can release the production if it has received the production release signal from the signal generating device.
  • the detection of the rotational speed of the grinding wheel takes place in that the measuring device has a clock provided on the grinding wheel and an associated, stationary mounted sensor for detecting the clock.
  • the grinding wheel has as clock at least one area with respect to the other grinding disc deviating material thickness.
  • This range of deviating material thickness is preferably made available by providing a timing disk on one of the end faces of the grinding wheel, which may be designed as a double grinding wheel.
  • This timing disk is preferably made of a rectangular plate, preferably made of stainless steel.
  • the associated sensor for interrogating such a timing disk can be designed, for example, as a proximity switch, in particular as an inductive sensor, and can preferably be fastened directly to the grinding wheel receptacle.
  • the grinding wheel normally does not have its own drive, but is driven by the friction with the cutting blade by the rotational movement of the cutting blade. However, it is also possible according to the invention to provide the grinding wheel with its own drive.
  • FIG. 1 schematically a front view of a filter attachment machine of the type "MAX" of the applicant is shown, the details of which are explained below.
  • An inlet drum 1 transfers the cigarettes produced on a cigarette manufacturing machine, not shown in detail in FIG. 2, to two Squatter drums 2, which graduate the staggered cigarettes and deliver in rows of two each with a space between the cigarettes to a compilation drum 3.
  • filter rods arrive from a magazine 4 on a cutting drum 6, cut there to filter plug twice the length of use, staggered on a staggering drum 7, aligned by a sliding drum 8 to a series of consecutive plugs and an accelerator drum 9 in the spaces between the cigarette rows the compilation drum 3 stored.
  • the thus aligned cigarette filter cigarette groups are pushed together and taken over by a transfer drum 11.
  • a covering paper strip 12 drawn off from a tipping paper bobbin 13 is glued by a gluing device 14 and then cut in a cutting device 16 on a cutting drum 17 by the knives of a knife drum 18 into covering tufts not shown in detail.
  • the separated pad sheets are adhered to the cigarette filter-cigarette groups on the transfer drum 11 and rolled on a roller drum 19 around the cigarette filter groups.
  • the finished double-filter cigarettes are fed via a drying drum 21 to a cutting drum 22 and assembled thereon by means of central cutting through the filter plugs to individual filter cigarettes not shown in detail.
  • a turning device 23 applies a series of filter cigarettes and transfers them simultaneously into a continuous unswept filter cigarette line.
  • the filter cigarettes reach an ejector drum 26.
  • a cooperating with a brake drum 27 Ablegertrommel 28 sets the filter cigarettes not shown in detail on a Ablegerband 29th
  • the cutting drums 6 and 22 are associated with circular blades 30, namely the cutting drum 6 two circular blades 30 and the cutting drum 22 a circular blade 30.
  • the cutting edges forming the peripheral edge of the circular blades 30 lose their sharpness during their operation. Such wear of the circular blade 30, however, adversely affects the Manufacture of cigarettes, since in such a case, the desired clean cut can not be guaranteed.
  • the circular knives are assigned grinding wheels with which the circular knives are reground regularly.
  • a grinding wheel 32 is shown positioned adjacent to the circular blade 30 associated with the cutting drum 22.
  • Usually two parallel grinding wheels are provided, which are employed with respect to the circular blade 30 a little twisted.
  • Delivered to the circular blade 30, the grinding wheels 32 by means of an actuator 34.
  • Such consisting of grinding wheels and actuator grinding device is also provided for the cutting drum 6 associated circular blade 30, but for reasons of clarity in FIG. 1 not shown in detail.
  • FIG. 2 an arrangement of cutting drum 22, circular blade 30, grinding wheels 32 and actuator 34 is shown in an enlarged schematic representation, in which case only one grinding wheel 32 can be seen from the two grinding wheels. Also are in FIG. 2 along the circumference of the cutting drum 22 axially arranged double filter cigarette C recognizable, which are cut by the circular blade 30 by the cut, as already mentioned above, takes place centrally through the filter, not shown in detail.
  • the cutting edge of the circular knife 30 is monitored online with an optical sensor 36, which transmits an electrical output signal to a control device 38, which controls the actuator 34. If the optical sensor 36 indicates sufficient sharpness, the circular blade 30 is not ground, ie the control device 38 controls the actuator 34 in such a way that the grinding wheels 32 remain disengaged from the circular blade 30. Only when the optical sensor 36 registers a blunt, the controller 38 controls the actuator 34 so that they move the grinding wheels 32 in the direction of the circular blade 30 until they come into touching loop engagement with the cutting edge of the circular blade 30. On in this way, the circular blade 30 is reground, but only until the required sharpness is reached again.
  • the controller 38 controls the actuator 34 so that the grinding wheels 32 are again disengaged from the circular blade 30, and deactivates if necessary then the actuator 34th
  • FIG. 2 shown arrangement of grinding wheels 32, actuator 34, optical sensor 36 and control device 38 thus forms a closed loop, which provides not for a continuous grinding wheel feed, but only when needed for a grinding wheel feed by the actuator 34. Accordingly, the grinding wheels 32 are delivered only after detecting a dulling of the circular blade 30 by means of the optical sensor 36 and a regrinding of the circular blade 30 takes place only when needed. In this way it is possible to achieve a maximum service life of the circular blade 30. An adaptation to the driven material takes place automatically.
  • FIG. 1 illustrated machine, a grinding device with an arrangement similar to that of FIG. 2 also provide for the cutting drum 6 associated circular blade 30.
  • FIG. 3 shows an embodiment of a grinding wheel according to the invention 32.
  • the grinding wheel 32 has a central bore 39, in which a in the FIG. 5 shown shaft 40 for holding the grinding wheel 32 can be inserted.
  • a timer 45 designed as a stainless steel sheet is provided in a region 44 between the bore 39 and a rim 41 as a region of increased material thickness.
  • the clock 45 is integrally formed and has in its center a hole for attachment to the grinding wheel 32 and for mounting on the below with respect to FIG. 5 described shaft 40 of the holding device 48 for holding the Grinding wheel 32 on.
  • the clock 45 has for its function as a clock in particular two pointing in the direction of the edge 41 of the grinding wheel 32 areas 46 and 46 a, which from a further below with respect to the FIG. 5 described sensor 60 can be detected.
  • FIG. 4 shows the embodiment of the FIG. 3 in a further schematic and perspective view in a holding device according to FIG. 5 ,
  • the holding device will be described below with reference to FIG FIG. 5 described in more detail.
  • FIG. 4 already shows that a sensor 60 serving to detect the timer 45 is adjacent to the grinding wheel 32 in accordance with FIG FIG. 4 is designed as a double grinding wheel, it is arranged that the sensor 60 upon rotation of the grinding wheel 32 a Vorbeistilles of in FIG. 4 detected visible range 46 of the clock 45 and also on further rotation can detect a past range of the range 46a of the clock 45 in its function as a proximity switch.
  • the thus emitted by the sensor 60 clock signals can be resolved, for example, with a resolution of 200 ns, so that in this way the time per revolution of the grinding wheel 32 can be measured very accurately and from this very quickly and very accurately the speed or the rotational speed of the Grinding wheel 32 can be determined.
  • FIG. 5 shows a holding device 48 for holding a grinding wheel 32 or 32 on a mounted on an L-shaped bracket 50 shaft 40.
  • the bracket 50 is in turn via a shaft 52 rotatably connected to the housing 54 of a Zigarettenher eins- or a Filteransetzmaschine, for example Filter attachment machine according to Fig. 1 , connected.
  • a holding plate 56 is attached, which has a bore in which by means of a nut 58, an inductive sensor 60 is set as a proximity switch.
  • the sensor 60 detects the areas provided by the timing disk 45 higher Material thickness 46 and 46a of the grinding wheels 32, 32a and outputs corresponding signals via a line 61 to a measuring device 62 for determining the rotational speed of the grinding wheel 32, 32a from the signals of the sensor 60 from.
  • a comparison device 64 connected to the measuring device 62, the determined rotational speed of the grinding wheel 32, 32a is then compared with a rotational speed of the cutting blade 30 determined by a transmitter 66.
  • the comparison device 64 is connected to a signal generating device 68 for generating a production enable signal when the rotational speed of the grinding wheel 32, 32a has reached a predeterminable percentage of the rotational speed of the cutting blade 30.
  • the production release signal is preferably delivered to a production release device 70 for releasing the production of the rod-shaped articles.
  • This production release device (70) can be part of the in FIG. 1 be shown Filteransetzmaschine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Claims (10)

  1. Machine de fabrication de cigarettes et/ou machine d'assemblage de filtres dotée d'un dispositif de rectification d'une lame de coupe rotative (30) pour la coupe d'articles en forme de tiges de l'industrie du tabac, comprenant :
    au moins une meule de rectification (32, 32a) rotative,
    caractérisée par un dispositif de mesure (46, 46a, 60) pour déterminer la vitesse de rotation de la meule de rectification (32, 32a), et
    un dispositif de génération de signal (68) relié au dispositif de mesure (46, 46a, 60) pour générer un signal d'autorisation de production lorsque la vitesse de rotation de la meule de rectification (32, 32a) a atteint un pourcentage prédéterminable d'une vitesse de rotation théorique ou d'une vitesse de rotation effective de la lame de coupe (30).
  2. Machine selon la revendication 1, caractérisée en ce que la vitesse de rotation théorique est une vitesse de rotation théorique de la lame de coupe (30).
  3. Machine selon la revendications 1 ou 2, caractérisée en ce qu'est prévu un capteur de mesure (66) pour indiquer la vitesse de rotation de la lame de coupe (30), le capteur de mesure (66) et le dispositif de mesure (46, 46a, 60) pour déterminer la vitesse de rotation de la meule de rectification étant reliés à un dispositif comparateur (64) destiné à comparer la vitesse de rotation de la lame de coupe avec la vitesse de rotation de la meule de rectification et un dispositif de génération de signal (68) étant relié au dispositif comparateur, lequel génère un signal d'autorisation de production lorsque la vitesse de rotation de la meule de rectification (32, 32a) a atteint un pourcentage prédéterminable de la vitesse de rotation de la lame de coupe (30).
  4. Machine selon l'une des revendications 1 à 3, comprenant un dispositif d'autorisation de production (70) relié au dispositif de génération de signal (68) pour autoriser la production lorsque le dispositif d'autorisation de production (70) reçoit le signal d'autorisation de production du dispositif de génération de signal (68).
  5. Machine selon l'une des revendications 1 à 4, dans laquelle le dispositif de mesure (46, 46a, 60) présente un générateur de cadence (46, 46a) prévu au niveau de la meule de rectification (32, 32a) et un capteur (60) associé, détectant le générateur de cadence (46, 46a) et disposé, de préférence, de manière fixe.
  6. Machine selon l'une des revendications 1 à 5, dans laquelle la meule de rectification (32, 32a) en tant que générateur de cadence présente au moins une région (46, 46a) ayant une épaisseur de matière qui diffère d'une épaisseur de matière du reste de la meule de rectification.
  7. Machine selon la revendication 5 ou 6, caractérisée en ce que le capteur (60) est un capteur inductif (60).
  8. Machine selon l'une des revendications précédentes, caractérisée en ce que la meule de rectification (32, 32a) n'a pas d'entraînement propre.
  9. Procédé de rectification d'une lame de coupe rotative (30) pour la coupe d'articles en forme de tiges sur des machines de fabrication de cigarettes et/ou des machines d'assemblage de filtres de l'industrie de transformation du tabac, dans lequel au moins une meule de rectification rotative (32, 32a) peut être amenée en contact de rectification avec la lame de coupe (30),
    caractérisé par les étapes suivantes :
    - détermination de la vitesse de rotation de la meule de rectification (32, 32a), et
    - génération d'un signal d'autorisation de production lorsque la vitesse de rotation de la meule de rectification (32, 32a) a atteint un pourcentage prédéterminable d'une vitesse de rotation théorique ou d'une vitesse de rotation effective de la lame de coupe (30).
  10. Procédé selon la revendication 9,
    comprenant les étapes suivantes :
    - détection de la vitesse de rotation de la lame de coupe (30),
    - comparaison de la vitesse de rotation de la lame de coupe (30) avec la vitesse de rotation de la meule de rectification (32, 32a), et
    - génération d'un signal d'autorisation de production lorsque la vitesse de rotation de la meule de rectification (32, 32a) a atteint un pourcentage prédéterminable de la vitesse de rotation de la lame de coupe (30).
EP08014676A 2007-08-31 2008-08-19 Dispositif et procédé de ponçage de lames de coupe Not-in-force EP2030515B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08014676T PL2030515T3 (pl) 2007-08-31 2008-08-19 Urządzenie i sposób szlifowania noży tnących

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007041470A DE102007041470A1 (de) 2007-08-31 2007-08-31 Vorrichtung und Verfahren zum Schleifen von Schneidmessern

Publications (3)

Publication Number Publication Date
EP2030515A2 EP2030515A2 (fr) 2009-03-04
EP2030515A3 EP2030515A3 (fr) 2010-01-20
EP2030515B1 true EP2030515B1 (fr) 2011-11-16

Family

ID=40076688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08014676A Not-in-force EP2030515B1 (fr) 2007-08-31 2008-08-19 Dispositif et procédé de ponçage de lames de coupe

Country Status (6)

Country Link
EP (1) EP2030515B1 (fr)
JP (1) JP2009056591A (fr)
CN (1) CN101376224B (fr)
AT (1) ATE533366T1 (fr)
DE (1) DE102007041470A1 (fr)
PL (1) PL2030515T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010056606A1 (de) * 2010-12-28 2012-06-28 Hauni Maschinenbau Ag Schneideinrichtung für eine Strangmaschine der Tabak verarbeitenden Industrie und Verfahren zum Einstellen der Position eines Schleifscheibenhalters einer Vorrichtung zum Schleifen in einer Schneideinrichtung für eine Strangmaschine der Tabak verarbeitenden Industrie
CN103371434B (zh) * 2012-04-26 2015-02-11 龙岩烟草工业有限责任公司 一种卷烟机磨刀砂轮的安装装置
DE102014215232B3 (de) * 2014-08-01 2015-07-23 Hauni Maschinenbau Ag Schneideinrichtung zum Schneiden von stabförmigen oder strangförmigen Produkten der Tabak verarbeitenden Industrie
CN105834754B (zh) * 2016-03-30 2017-12-19 嵊州北航投星空众创科技有限公司 一种用于挂衣架转动式自动打磨机
CN106690409B (zh) * 2017-02-07 2019-03-15 龙岩烟草工业有限责任公司 接装机切割圆刀清洁装置和接装机
IT201900024220A1 (it) * 2019-12-17 2021-06-17 Gd Spa Dispositivo di taglio dell’industria del tabacco

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1156629B (it) 1982-07-14 1987-02-04 Gd Spa Dispositivo di affilatura per lame rotanti
IT1236173B (it) 1989-12-01 1993-01-11 Gd Spa Dispositivo per l'affilatura di lame rotanti.
DE10021614A1 (de) * 2000-05-04 2001-11-08 Hauni Maschinenbau Ag Verfahren und Vorrichtung zum automatischen Nachschleifen von Tabakschneidemessern
DE10035743A1 (de) * 2000-07-22 2002-04-04 Deere & Co Schleifvorrichtung
DE10060552A1 (de) 2000-12-06 2002-06-13 Hauni Maschinenbau Ag Schneidvorrichtung und Verfahren zum Wechseln von Schneidmitteln
DE10205146A1 (de) 2002-02-07 2003-08-21 Hauni Maschinenbau Ag Vorrichtung und Verfahren zum Schleifen von Schneidmessern

Also Published As

Publication number Publication date
PL2030515T3 (pl) 2012-04-30
EP2030515A2 (fr) 2009-03-04
CN101376224B (zh) 2013-07-31
JP2009056591A (ja) 2009-03-19
DE102007041470A1 (de) 2009-03-05
ATE533366T1 (de) 2011-12-15
EP2030515A3 (fr) 2010-01-20
CN101376224A (zh) 2009-03-04

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