EP2556921A2 - Procédé d'aiguisage, en particulier l'aiguisage ultérieur de lames d'un déchiqueteur à aubage - Google Patents

Procédé d'aiguisage, en particulier l'aiguisage ultérieur de lames d'un déchiqueteur à aubage Download PDF

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Publication number
EP2556921A2
EP2556921A2 EP12175930A EP12175930A EP2556921A2 EP 2556921 A2 EP2556921 A2 EP 2556921A2 EP 12175930 A EP12175930 A EP 12175930A EP 12175930 A EP12175930 A EP 12175930A EP 2556921 A2 EP2556921 A2 EP 2556921A2
Authority
EP
European Patent Office
Prior art keywords
knife
knives
grinding
advanced
feed
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Withdrawn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
EP12175930A
Other languages
German (de)
English (en)
Other versions
EP2556921A3 (fr
Inventor
Wolfgang Holzer
Lothar Steiner
Sven Zimmer
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.)
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Original Assignee
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
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 Siempelkamp Maschinen und Anlagenbau GmbH and Co KG filed Critical Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Publication of EP2556921A2 publication Critical patent/EP2556921A2/fr
Publication of EP2556921A3 publication Critical patent/EP2556921A3/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Withdrawn legal-status Critical Current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
    • 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
    • B24B3/363—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of blades mounted on a turning drum
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/006—Machines or devices using grinding or polishing belts; Accessories therefor for special purposes, e.g. for television tubes, car bumpers
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0069—Other grinding machines or devices with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means
    • 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 method for sharpening, in particular re-sharpening knives of a Messerringzerspaners in which a knife ring several knife holder are attached to which at least one knife is held by clamping, the sharpened knife to be advanced in / to the knife holder and then in the advanced position be ground with a grinding device.
  • Messerringzerspaner serve the production of chips or the like material for the production of wood-based panels, such as chipboard or the like.
  • the raw wood is usually supplied as bulk material, for example in the form of wood chips.
  • Such a Messerringzerspaner has a knife ring on which a plurality of knives (in / on) knife holders are attached.
  • the knife holder is composed, for example, of a holding plate and a clamping plate connected to the holding plate via at least one clamping screw, the knife being fixed with the clamping screw between the holding plate and the clamping plate.
  • Messerringzerspaner means within the scope of the invention but not only a chipper for wood chips, in which, in addition to the rotating blade ring optionally still a counter-rotating inner guide ring is provided, but also chipper for long wood.
  • the sharpening of the knives is done by grinding their installed in the knife carrier state under the slow rotation, wherein prior to sharpening all the knives loosened successively in their holder and advanced by an amount corresponding to the cutting wear in their effective range. In this advanced position, the knives are re-clamped and then pre-programmed to achieve a desired cutting board on the relevant surface of the knife carrier radial grinding feed, taking into account the state of wear of this area.
  • a grinding device with a grinding wheel, which is driven by a drive motor by means of belt drive. This is mounted on a support which is movable by means of a cross slide in the axial and radial directions.
  • a tool combination is used which is mounted on a tool stand. This tool combination initially has a screw for loosening and re-tightening the clamping screws on the knife holder and a knife ram for each advancing the Zerspanmesser. Furthermore, a hold-down is provided, which is the Ruhigstellen the loosened knife holding plates concerned during the individual knife feeds. All tools are programmatically pneumatically operated.
  • the knife ring or knife basket has a plurality of knife packages, each having a support block, a clamping plate, a knife located between these two and a clamping screw and a wear plate.
  • a conditioning device As soon as the knives no longer have the necessary sharpness, the entire knife basket is removed from the chipper by means of a conditioning device. Then, a grinding device is inserted into the space enclosed by the knife basket interior. In this case, the grinding device is positioned such that each grinding wheel is opposite to a knife to be ground.
  • the grinding device thus has a plurality of grinding wheels.
  • a clamping system for knives of a Zerspaners which is designed as Langholzzerspaner.
  • the surfaces of the clamping means and / or the holder may have a wave profile, wherein this surface is deformable with wave profile, so that it engages when tightening the screws with a predetermined force on the cutting means with a substantially uniform clamping force.
  • the invention has for its object to provide a method of the type described above, which allows a simple way, a speedy and proper sharpening and especially re-sharpening a Messerringzerspaners.
  • the invention teaches in a generic method, in particular re-sharpening knives of a Messerringzerspaners that the knives are advanced into / on the knife holder without loosening the clamp. If the knife holder has at least one holding plate and a clamping plate connected to the holding plate via at least one clamping screw, in which the knife is fixed with the clamping screw between holding plate and clamping plate, the invention proposes that the knife is advanced without loosening the clamping screw.
  • the invention is based on the surprising finding that the blades of a Messerringzerspaners for the purpose of regrinding readily with suitable means can advance without the clamping must be solved in the knife holder.
  • the invention therefore proposes, in diametrical departure from the known method, to dispense with a release of the clamping and to advance the knives for the purpose of re-sharpening consequently in the clamped state by a desired degree. This can be dispensed with the elaborate loosening of the clamping screws with the appropriate apparatus required, so that the regrinding of the knife can be done inexpensively and quickly.
  • the knife is preferably advanced with a (mechanical) feed device and particularly preferably a controlled feed device.
  • the feed preferably continuously and consequently pushing or pushing be realized by continuously or quasi continuously a certain feed force in the longitudinal direction of the knife is applied to the knife.
  • electromotive or pneumatic or hydraulic feed drives press by means of feed elements on the back of the knife.
  • the knife is advanced pulsating or beating, for example, with a pulsating or whipping driven or operating feed device.
  • Such a beat feed device is also suitable to advance the knife itself against high clamping forces without loosening the clamp in the desired manner.
  • Such a pulsating or impact driven feeding device can be equipped, for example, with a striking mechanism, as known for example from beaters or drills.
  • the feed device can be pneumatically or hydraulically driven to initiate the high feed forces against the clamping in the knife can.
  • electromotive drives for example spindle drives, are possible, especially when working continuously.
  • Controlled feed means in the context of the invention, in particular, that the feed force is not manually, but mechanically applied in a certain defined manner, for example with defined forces and / or over defined time intervals. In principle, it is possible to monitor the realized feed metrologically. However, this is not mandatory.
  • the knife be ground in the advanced position to a predetermined board size.
  • the invention is based on the recognition that it is not absolutely necessary to realize an exact board when advancing the knife. Rather, can be dispensed with an exact positioning, if subsequently after the feed of the desired board is realized by appropriate grinding of the knife. Consequently, even with high clamping forces can be dispensed with the release of the clamping, and in particular also because it is not necessary within the scope of the invention that is maintained in the context of the feed of the exact board.
  • the resharpening of the individual knives preferably takes place after the knife ring has been removed from the knife ring scraper. This is especially true in Messerringzerspanern for the cutting of wood chips or the like, in which within the knife ring a likewise rotating, for example, counter-rotating guide ring is arranged, which brings the chips via the centrifugal force in the range of the knife.
  • Messerringzerspaner means within the scope of the invention but also chipper for Langholzzerspanung in which the long wood is introduced into the Zerspanungsraum within the blade ring, without there being a rotating guide ring is provided.
  • the resharpening of the knife can basically be done in a "stationary" orientation of the knife ring by the knife ring is fixed, for example standing in a suitable holder.
  • the blades are preferably in a lying position featuringdem Knife ring advanced and ground. In this lying position, high feed forces can be easily applied, without deformation of the knife ring or other disturbances are to be feared.
  • It is expedient to fix the knife ring in the lying position for example with a suitable fastening device.
  • the processing in a lying position also has the advantage that the grinding device can be inserted from above into the knife ring, so that the abrasive particles or the grinding dust can be easily removed down.
  • the invention proposes that the board of the knife is measured during and / or after the loops. This is particularly useful if - as described above - the feed is not previously measured exactly, but the desired board is then set during grinding. However, the measurement does not have to be done with special measuring devices that work directly on the knife, but preferably succeeds the measurement of Messervorstandes indirectly by appropriate control of the grinding device by the grinding device in the radial direction in the course of grinding is advanced so far that set the desired Messerervorstand becomes.
  • the invention also relates to a device for sharpening, in particular re-sharpening knives of a Messerringzerspaners, according to a method of the type described.
  • a device for sharpening, in particular re-sharpening knives of a Messerringzerspaners, according to a method of the type described.
  • Such a device has at least one feed device for advancing the knife in / on the Knife holders and a grinding device for grinding the knife.
  • the device which preferably has a feed ram or feed ram, is characterized in that the feed device for advancing the knives is set up without loosening the clamp.
  • This can be a continuously operating feed device or a pulsating or impacting feed device.
  • the grinding device is preferably designed as a belt grinding device, which preferably operates without coolant.
  • the feed device can be provided with a pushing electromotive, hydraulic or pneumatic drive. Alternatively, a beating drive can be provided. The drive works on the ram or punch,
  • Fig. 1 is a cutting machine in the embodiment as a knife ring chipper for the cutting or crushing of wood, especially for the production of wood chips or the like material shown.
  • a rotating (outer) blade ring 2 and on the other hand arranged a rotating within the blade ring 3 beater. Both the knife ring 2 and the beater wheel 3 are driven by suitable shafts. Details are not shown.
  • knife ring 2 on the one hand and beater wheel 3 on the other hand rotate in opposite directions.
  • Fig. 1 shows the Messerringzerspaner frontally open housing, so that in particular the blade ring 2 and the beater wheel 3 are visible inside.
  • the wood is supplied as bulk material, eg in the form of wood chips.
  • FIG. 2 is fragmentary illustrated the knife ring 2 in the disassembled state in the region of a processing device. It has two axially spaced annular discs 2a, between which a plurality of knife carriers 2b are attached. It can be seen that each blade carrier 2b is equipped on the one hand with a knife 6 and on the other hand with a wear plate 7, wherein the Wear plates are also referred to as wear shoes 7. The wear plates 7 are mounted on the inside of the knife ring in tangential alignment. With their inner surfaces 8, they form the inner surface of the knife ring 2.
  • the knives 6 are arranged at a predetermined angle ⁇ relative to the wear plates 7. In each case, the knives protrude above the inner surface 8 of the wear plate 7 between two adjacent wear plates 7 with a predetermined knife edge.
  • Messervorstand here means the Messervorstand set for the operation.
  • the knives 6 are attached exchangeably to knife holders 9. For this purpose, clamping screws 10 are provided, with which the knives 6 are clamped to the knife holders.
  • the knife holder 9 can be composed of eg holding plate and clamping plate.
  • the knives 6 of the knife ring 2 must be resharpened or reground at regular intervals. For this purpose, the blade ring 2 from the Messerringzerspaner according to Fig. 1 expanded and in the in the Fig.
  • processing device 11 introduced. Part of this processing device 11 are on the one hand a grinding device 12 and on the other hand a turntable 13, on which the removed knife ring is attached, in such a way that the knife ring 2 with or on the turntable 13 is rotatable.
  • the grinding device 12 is movable relative to the turntable 13 and the blade ring 2 mounted thereon in the axial and radial directions, with respect to the axis A of the blade ring.
  • the Fig. 3 to 6 show the processing device 11 in different functional positions.
  • the background is the fact that the knife ring 2 is removed from the knife ring chipper in a vertical arrangement and then processed in the processing device 11 in a horizontal arrangement.
  • the turntable 13 and the Grinding device 12 is arranged on a pivoting table 24, wherein the pivoting table 24 is pivotally mounted on a machine frame 14 for tilting the knife ring 2 from an extended position with a horizontal axis in a machining position with a vertical axis about a horizontal axis 29.
  • FIG. 3 to 6 shows the processing device 11 with knife ring 2 in the horizontal processing position, in which the grinding is done by means of the grinding device 12.
  • the knife ring from the Messerringzerspaner according to Fig. 1 removed and extended with the help of there recognizable expansion rods 32 from the Messerringzerspaner. From there it can be supplied, for example, with a separate (not shown) Dolly the processing device 11.
  • Fig. 3 shows the processing device first with horizontally arranged pivoting table 24 without mounted blade ring. From this first functional position, the processing device is first in the in Fig. 4 shown converted second functional position, wherein the pivot table is arranged vertically here. In this functional position, the knife ring 2 can now be taken over by the transport carriage, not shown, or the like.
  • the knife ring 2 is thus adopted in a standing arrangement in the processing device 11 and then fixed to the turntable 13.
  • the turntable 13 has a plurality of fastening elements 30.
  • the pivot table 24 can be pivoted about the horizontal axis 29 by means of the pivot drive 25, so that the pivot table 24 from the vertical position to the horizontal position and thus the knife ring from the standing position in the lying position is transferred, in which the axis of the knife ring is vertically aligned.
  • Fig. 5 and 6. Fig. 6 Consequently shows the processing device 11 with mounted blade ring 2 in the machining position, in which the blade ring is in a horizontal arrangement with vertically aligned axis A.
  • the grinding device 12 is arranged on the pivot table 24, but relative to the turntable 13 in the axial direction and radial direction (relative to the axis A of the rotary table mounted on the knife ring) is movable.
  • the grinding device 12 can be lowered in the axial direction Y, so that it dips into the blade ring 2.
  • the grinding of the knife 6 is preferably carried out while the grinding device 12 is running by slowly rotating the knife ring 2 around the grinding device 12 around. By positioning the grinding device 12 relative to the knife ring 2 in the radial direction X, the grinding operation can be controlled.
  • this is structurally realized in that on the pivoting table 24, a carrier carriage 15 is arranged, wherein the carrier carriage 15 is movable relative to the machine frame and consequently relative to the pivot table in the radial direction X and consequently positionable.
  • linear guides 16 are provided for this purpose.
  • On the carrier carriage 15 is a Fixed holding device 17 for the grinding device, in such a way that the holding device 17 in the axial direction Y on the carrier carriage 15 is movable. This means that the holding device 17, to which in turn the grinding device 12 is attached, can be raised and lowered.
  • vertically oriented linear guides 18 are provided between carrier carriages 15 and holding device 17.
  • a merely indicated rotary drive 19 is provided for the turntable 13.
  • the grinding device 12 is designed as a belt grinding device. It has a grinding drive 21 for driving the grinding belt 20.
  • the grinding device 12 or its holding device 17 is movable on the carrier carriage 15 by means of a lifting drive 22, for example, raised and lowered.
  • a merely indicated feed or feed drive 23 can be provided, with which the grinding device 12 or the carrier carriage 15 can be moved in the radial direction X.
  • the pivoting table 24 with a pivot drive 25 is pivotable about the pivot axis 29.
  • a knife feed device 26 which has a plurality of knife feed elements 27, is fastened to the swivel table 24.
  • these feed elements 27, which may be formed, for example, as feed rods
  • the individual knives of the knife ring can be advanced by a desired amount.
  • the feed device 26 has two feed drives 28 assigned to the feed rods 27.
  • the feed rods, as it were, pass through the knife carriers from behind by means of already provided grooves, so that they work from the rear of the knife onto the knives.
  • the advantage here is the fact that the feed device 26 fixed (but optionally adjustable) on the Swiveling table is arranged.
  • the turntable on the one hand with the attachment points 30 for the knife ring and the advancing device 26 on the other hand are thus fastened to each other in a fixed predetermined arrangement on the pivot table, so that their relative position, especially during pivoting of the pivot table 24, does not change.
  • the feed device 26 operates without releasing the clamping of the blades and consequently without loosening the clamping screws.
  • the knives are thus advanced with the advancing elements 27 via their drives 28 without loosening the clamping.
  • the knife ring is brought by means of the rotary drive in a certain position and advanced a single knife. Then the ring can be rotated further by a certain angle and the next knife can be advanced.
  • first all knives are advanced by a certain amount.
  • the grinding of all the knives can be done with rotating knife ring by means of the grinding device.
  • An interesting aspect is the fact that the desired knife edge in the course of grinding can be done by suitable control of the grinding device and in particular the positioning of the grinding device. The advance of the blades must therefore not be in an exact position, but it is sufficient if the blades are advanced by a certain minimum. After all, the desired knife edge is only apparent after the grinding process.
  • the pivot table 24 can again in the in Fig. 5 pivoted position shown and removed the knife ring and re-installed in the knife ring chipper 1.
EP12175930.2A 2011-08-09 2012-07-11 Procédé d'aiguisage, en particulier l'aiguisage ultérieur de lames d'un déchiqueteur à aubage Withdrawn EP2556921A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011052529A DE102011052529A1 (de) 2011-08-09 2011-08-09 Verfahren zum Schärfen, insbesondere Nachschärfen von Messern eines Messerringzerspaners

Publications (2)

Publication Number Publication Date
EP2556921A2 true EP2556921A2 (fr) 2013-02-13
EP2556921A3 EP2556921A3 (fr) 2016-05-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12175930.2A Withdrawn EP2556921A3 (fr) 2011-08-09 2012-07-11 Procédé d'aiguisage, en particulier l'aiguisage ultérieur de lames d'un déchiqueteur à aubage

Country Status (3)

Country Link
EP (1) EP2556921A3 (fr)
CN (1) CN103056732B (fr)
DE (1) DE102011052529A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112497075A (zh) * 2020-11-30 2021-03-16 广州奔德网络科技有限公司 一种手表制造打磨用抛光液自动添加装置
CN112775791A (zh) * 2020-12-30 2021-05-11 无锡易玛卡机械科技有限公司 一种磨刀装置用伸缩手指

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104440421B (zh) * 2014-11-20 2017-02-22 浙江工业职业技术学院 多功能油泥刮刀刀片刃磨机
CN111843635A (zh) * 2019-04-08 2020-10-30 哈尔滨理工大学 一种刀具倒棱磨削装置
CN115365899B (zh) * 2022-10-20 2023-01-10 亚联机械制造(唐山)有限公司 一种环式刨片机刀具用自动磨刀机

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE4316514C2 (de) 1993-05-18 1996-02-08 Pallmann Kg Maschf Verfahren und Vorrichtung zum Nachschärfen der Messer von Zerkleinerungsmaschinen
EP0775043B1 (fr) 1994-08-09 1998-04-01 Cae Machinery Ltd. Systeme de serrage de lames
EP0875338B1 (fr) 1997-05-02 2003-01-15 B. Maier Zerkleinerungstechnik GmbH Déchiqueteuse à lames-couronne

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JPS5695565A (en) * 1979-12-27 1981-08-03 Toshihei Mochizuki Automatic feeding device of tool grinding machine for wood working
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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
DE4316514C2 (de) 1993-05-18 1996-02-08 Pallmann Kg Maschf Verfahren und Vorrichtung zum Nachschärfen der Messer von Zerkleinerungsmaschinen
EP0626234B1 (fr) 1993-05-18 1997-05-21 Pallmann Maschinenfabrik Gmbh + Co. Kg Procédé et dispositif pour réaflûter les couteaux d'un broyeur
EP0775043B1 (fr) 1994-08-09 1998-04-01 Cae Machinery Ltd. Systeme de serrage de lames
DE69501961T2 (de) 1994-08-09 1998-07-30 Cae Machinery Ltd Klemmsystem für messer
EP0875338B1 (fr) 1997-05-02 2003-01-15 B. Maier Zerkleinerungstechnik GmbH Déchiqueteuse à lames-couronne

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112497075A (zh) * 2020-11-30 2021-03-16 广州奔德网络科技有限公司 一种手表制造打磨用抛光液自动添加装置
CN112775791A (zh) * 2020-12-30 2021-05-11 无锡易玛卡机械科技有限公司 一种磨刀装置用伸缩手指

Also Published As

Publication number Publication date
EP2556921A3 (fr) 2016-05-25
DE102011052529A1 (de) 2013-02-14
CN103056732B (zh) 2015-11-18
CN103056732A (zh) 2013-04-24

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