EP0835721B1 - Method and device for dressing the knives of a crusher - Google Patents
Method and device for dressing the knives of a crusher Download PDFInfo
- Publication number
- EP0835721B1 EP0835721B1 EP97114820A EP97114820A EP0835721B1 EP 0835721 B1 EP0835721 B1 EP 0835721B1 EP 97114820 A EP97114820 A EP 97114820A EP 97114820 A EP97114820 A EP 97114820A EP 0835721 B1 EP0835721 B1 EP 0835721B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- cutters
- cutter
- cutter case
- ground
- 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.)
- Expired - Lifetime
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Classifications
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- 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
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- 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
- B24B27/0053—Radial grinding machines
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- 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
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
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- 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
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- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
Definitions
- the invention relates to a method and an apparatus for grinding the Knife of a chipper according to the preamble of claims 1 and 4.
- Chippers for the production of Chips into chips that can be processed industrially, for example as a raw material for chipboard.
- Knife service life A big problem with such chippers is the relatively small Knife service life.
- the knives usually have to be worn can be replaced after just a few hours of operation, i.e. several times per working shift.
- the invention is based, a working method and a task Specify device with which a perfect, quick and can achieve efficient grinding of worn chipper knives, and with which precisely determined the position of the chipper knives Allow the cutting edges to be ground under a clearance angle.
- the crucial feature of the invention is that during the individual grinding process between the knife basket and the Grinding device there is no relative rotational movement, but a Standstill. There is only a relative movement in the axial direction between the knives and the grinding device.
- the single knife can be made in several ways from Edit grinding tools. This means that the material is very sensitive can be removed. There can be a clearance angle on the individual knife produce.
- a multiple tool can be used so that a correspondingly large number of knives can be processed simultaneously can. So it is conceivable, for example five, ten or even more knives edit at the same time. After finishing a knife or One group of knives will change the knife basket into a new one Machining position clocked. Instead, of course, it would also be possible To let the knife basket stand, and instead the individual - To twist grinding tool relative to the knife basket, so that another Knives or another group of knives can be edited.
- a tool that has one or more can be considered as a grinding tool Includes grinding wheels. If the grinding tool has several grinding wheels, see above these are arranged side by side so that all of these grinding wheels work simultaneously, with each grinding wheel having a single knife processed.
- the grinding wheels can be arranged parallel to each other be, for example on one and the same axis of rotation. It is also conceivable to arrange the grinding wheels of a grinding tool such that they lie in radial planes. In the latter case, each must Grinding wheel have their own drive shaft.
- FIG. 1 shows a device for grinding knives of a chipper. The chipper is not shown here.
- FIG. 2 shows an enlarged section X from FIG. 1.
- FIG. 3 shows an enlarged section Y from FIG. 2.
- the grinding station 1 can be moved on rollers 1.2 relative to the chipper, such that a knife basket at the chipper and received by this can be transported away to the working position of the grinding station 1.
- a knife basket 2 in the grinding station 1 used. It rests on rollers 1.3, so that it is in its grinding station 1 own axis can be clocked.
- the knife basket 2 has a plurality of knife packs 3, which are the best can be seen from Figure 2.
- the crucial element of the entire device is one Grinding device 4. This can be seen in FIG. 1, but is more precise Fig. 2.
- the grinding device 4 comprises a plurality of grinding wheels 4.1. In the present case there are four grinding wheels. These four Grinding wheels sit on a common drive shaft 4.2. This is drivable by means of a drive motor 4.3 and a bevel gear 4.4. Man also recognizes a spindle drive with stepper motor 4.5.
- the entire device works as follows:
- the Entire knife basket from the chipper using the grinding station 1 taken out.
- the grinding device 4 in the Knife basket 2 enclosed interior introduced.
- the Grinding device 4 positioned such that each grinding wheel 4.1 one grinding knife 3.3 is opposite.
- the drive motor 4.3 sets the Grinding disks 4.1 via the bevel gear 4.4 and the drive shaft 4.2 in rotation, and the stepper motor 4.5 drives the entire unit in the direction of the double arrow - seen in Fig. 2 - to the left so that the Circumferential surfaces of the grinding wheels 4.1 on the surfaces to be ground Knives 3.3 come to rest.
- Another drive is provided, of which only shaft 5 is represented symbolically.
- This drive creates a movement of the Grinding device 4 parallel to the axis of the knife body 2 and at the same time parallel to the cutting edges of the knives 3.3.
- the grinding of a each knife with a single pass or return of the grinding device 4 be accomplished. But it is also possible to have two or more movements in to execute one and the other.
- the grinding device 4 can have a different number of grinding wheels 4.1 have as the number of four grinding wheels shown here. So needs only one grinding wheel to be provided. But it can also more than four grinding wheels can be provided.
- the grinding wheels 4.1 are in Radial planes run through the center of the knife basket 2 run. This applies to both the case of a single grinding wheel per Grinding device 4, as well as in the event that a grinding device 4 a Has a plurality of grinding wheels.
- the knife can be grinded with the grinding wheel 4.1 3.3 Grind a clearance angle.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zum Schleifen der
Messer eines Zerspaners nach dem Oberbegriff des Anspruchs 1 und 4.The invention relates to a method and an apparatus for grinding the
Knife of a chipper according to the preamble of
Hierbei geht es insbesondere um Zerspaner zur Herstellung von Hackschnitzeln zu Spänen, die industriell weiterverarbeitet werden können, beispielsweise als Ausgangsmaterial für Spanplatten.This is particularly about chippers for the production of Chips into chips that can be processed industrially, for example as a raw material for chipboard.
Ein großes Problem bei solchen Zerspanern besteht in der relativ geringen Standzeit der Messer. Aufgrund des Verschleißes müssen die Messer meist bereits nach wenigen Stunden Betriebsdauer ausgetauscht werden, d.h. mehrmals pro Arbeitsschicht.A big problem with such chippers is the relatively small Knife service life. The knives usually have to be worn can be replaced after just a few hours of operation, i.e. several times per working shift.
Das Einbauen neuer, scharfer Messer erfordert einen besonderen Aufwand. Die angestrebte Spandicke ergibt sich nämlich aus dem Abstand des Messers gegenüber den sogenannten Verschleißplatten, die ihrerseits Bestandteil des Messerkranzes sind. Aus alledem folgt, daß das Austauschen stumpfer Messer gegen scharfe Messer sehr zeit- und kostenaufwendig ist. Insbesondere sind die Personalkosten hierfür sehr hoch.The installation of new, sharp knives requires a special effort. The desired chip thickness results from the distance between the knives compared to the so-called wear plates, which in turn are part of the Knife ring are. From all of this it follows that the exchange is duller Knives against sharp knives is very time-consuming and costly. In particular, the personnel costs for this are very high.
Man hat daher schon seit längerem nach Wegen gesucht, den Messerwechsel zu rationalisieren. So ist aus DE 43 16 514 C2 ein Arbeitsverfahren bekannt, das die folgenden Verfahrensschritte umfaßt: Zunächst wird der Messerkorb aus dem Zerspaner herausgefahren und in einen Messerkorbträger eingesetzt, in welchem er drehbar gelagert ist, und eine Schleifeinrichtung mit einer Schleifscheibe umhüllt. Die stumpfen Messer im Messerkorb werden zunächst aus ihrer Klemmhalterung gelöst, und es wird derjenige Vorstand der Messer eingestellt, der notwendig ist, um ein Nachschleifen auf einen gewünschten Arbeitsvorstand der Messer zu ermöglichen. Sodann wird der Messerkorb in langsame, fortwährende Umdrehung versetzt. Gleichzeitig wandert die Schleifeinrichtung in Achsrichtung des Messerkorbes und somit entlang der Schneiden der Messer.One has therefore been looking for ways for a long time, the Streamline knife changes. So is from DE 43 16 514 C2 Working method known, which comprises the following process steps: First the knife basket is moved out of the chipper and into a knife carrier used, in which it is rotatably mounted, and a grinding device encased with a grinding wheel. The blunt knives in the knife basket are first released from their clamp bracket, and it the board of knives that is necessary to set one Regrind to a desired board member of the knife enable. Then the knife basket is in slow, continuous Rotation offset. At the same time, the grinding device moves in Axial direction of the knife basket and thus along the cutting edges of the Knife.
Aufgrund der ständigen, somit ununterbrochenen Umdrehung des Messerkorbes ergeben sich Messerstirnflächen, die auf einem Kreisbogen liegen. Es ist somit unmöglich, einen sogenannten Freiwinkel anzuschleifen. Diesbezüglich ist in der genannten Patentschrift die Aussage enthalten, daß das Nachschärfen in eingebautem Zustand zwangsläufig einen Freiwinkel von Null ergibt.Due to the constant, thus uninterrupted rotation of the Knife basket result in knife faces that are on a circular arc lie. It is therefore impossible to grind a so-called clearance angle. In this regard, the statement contains the statement that the resharpening in the installed state inevitably has a clearance angle of Results in zero.
Zahlreiche Fachleute sind jedoch der Auffassung, daß ein Freiwinkel erwünscht sein kann.However, many experts believe that a clearance angle may be desired.
Der Erfindung liegt die Aufgabe zugrunde, ein Arbeitsverfahren sowie eine Vorrichtung anzugeben, mit denen sich ein einwandfreies, rasches und rationelles Schleifen von verschlissenen Zerspanermessern erzielen läßt, und mit denen sich an den Zerspanermessern genau lagebestimmte Schneidkanten unter einem Freiwinkel anschleifen lassen.The invention is based, a working method and a task Specify device with which a perfect, quick and can achieve efficient grinding of worn chipper knives, and with which precisely determined the position of the chipper knives Allow the cutting edges to be ground under a clearance angle.
Diese Aufgabe wird durch die Merkmale der unabhängigen
Ansprüche 1 und 4 gelöst. Vorteilhafte Ausgestaltungen sind in den
Unteransprüchen beschrieben.This task is characterized by the characteristics of the
Das entscheidende Merkmal der Erfindung besteht darin, daß während des einzelnen Schleifvorganges zwischen dem Messerkorb und der Schleifeinrichtung keinerlei relative Drehbewegung herrscht, sondern ein Stillstand. Eine Relativbewegung herrscht nur in axialer Richtung zwischen den Messern und der Schleifeinrichtung. The crucial feature of the invention is that during the individual grinding process between the knife basket and the Grinding device there is no relative rotational movement, but a Standstill. There is only a relative movement in the axial direction between the knives and the grinding device.
Das einzelne Messer läßt sich in mehreren Hin- und Hergängen von Schleifwerkzeugen bearbeiten. Dies bedeutet, daß das Material sehr feinfühlig abgetragen werden kann. Dabei läßt sich ein Freiwinkel am einzelnen Messer herstellen.The single knife can be made in several ways from Edit grinding tools. This means that the material is very sensitive can be removed. There can be a clearance angle on the individual knife produce.
Falls gewünscht, kann ein Mehrfach-Werkzeug verwendet werden, so daß eine entsprechend große Anzahl von Messern gleichzeitig bearbeitet werden kann. So ist es denkbar, beispielsweise fünf, zehn oder noch mehr Messer gleichzeitig zu bearbeiten. Nach vollendetem Bearbeiten eines Messers oder einer Gruppe von Messern wird der Messerkorb in eine neue Bearbeitsposition getaktet. Stattdessen wäre es natürlich auch möglich, den Messerkorb feststehen zu lassen, und stattdessen das einzelne - Schleifwerkzeug relativ zum Messerkorb zu verdrehen, so daß ein weiteres Messer bzw. eine weitere Gruppe von Messern bearbeitet werden kann.If desired, a multiple tool can be used so that a correspondingly large number of knives can be processed simultaneously can. So it is conceivable, for example five, ten or even more knives edit at the same time. After finishing a knife or One group of knives will change the knife basket into a new one Machining position clocked. Instead, of course, it would also be possible To let the knife basket stand, and instead the individual - To twist grinding tool relative to the knife basket, so that another Knives or another group of knives can be edited.
Als Schleifwerkzeug kommt ein Werkzeug in Betracht, das eine oder mehrere Schleifscheiben umfaßt. Hat das Schleifwerkzeug mehrere Schleifscheiben, so sind diese nebeneinander angeordnet, so daß alle diese Schleifscheiben gleichzeitig arbeiten, wobei jede Schleifscheibe jeweils ein einziges Messer bearbeitet. Dabei können die Schleifscheiben parallel zueinander angeordnet werden, beispielsweise auf ein und derselben Drehachse. Es ist aber auch denkbar, die Schleifscheiben eines Schleifwerkzeuges derart anzuordnen, daß sie in Radialebenen liegen. Im letztgenannten Falle muß eine jede Schleifscheibe ihre eigene Antriebswelle haben.A tool that has one or more can be considered as a grinding tool Includes grinding wheels. If the grinding tool has several grinding wheels, see above these are arranged side by side so that all of these grinding wheels work simultaneously, with each grinding wheel having a single knife processed. The grinding wheels can be arranged parallel to each other be, for example on one and the same axis of rotation. It is also conceivable to arrange the grinding wheels of a grinding tool such that they lie in radial planes. In the latter case, each must Grinding wheel have their own drive shaft.
Weiterhin wäre es denkbar, die Wellen der Schleifscheiben derart zu lagern, daß eine Neigung einstellbar ist, so daß unterschiedliche Schleifwinkel erzielbar sind. Damit würde die Einrichtung äußerst flexibel werden. It would also be conceivable to support the shafts of the grinding wheels in such a way that an inclination is adjustable so that different grinding angles are achievable. This would make the facility extremely flexible.
Die Erfindung ist anhand der Zeichnung näher erläutert.The invention is explained in more detail with reference to the drawing.
Fig. 1 zeigt eine Vorrichtung zum Schleifen von Messern eines Zerspaners. Der Zerspaner ist hier nicht dargestellt.1 shows a device for grinding knives of a chipper. The chipper is not shown here.
Fig. 2 zeigt einen vergrößerten Ausschnitt X aus Fig. 1.FIG. 2 shows an enlarged section X from FIG. 1.
Fig. 3 zeigt einen vergrößerten Ausschnitt Y aus Fig. 2.FIG. 3 shows an enlarged section Y from FIG. 2.
Die Schleifstation 1 ist auf Rollen 1.2 relativ zum Zerspaner verfahrbar, derart,
daß ein Messerkorb am Zerspaner in Empfang genommen und von diesem
hinwegtransportiert werden kann, zur Arbeitsposition der Schleifstation 1. Im
dargestellten Ausführungsbeispiel ist ein Messerkorb 2 in die Schleifstation 1
eingesetzt. Er ruht auf Rollen 1.3, so daß er in der Schleifstation 1 um seine
eigene Achse getaktet werden kann.The
Der Messerkorb 2 weist eine Vielzahl von Messerpaketen 3 auf, die am besten
aus Figur 2 erkennbar sind. Man sieht dort jeweils einen Tragklotz 3.1, eine
Klemmplatte 3.2, ein zwischen diesen beiden befindliches Messer 3.3, eine
Spannschraube 3.4 sowie eine Verschleißplatte 3.5.The
Das entscheidende Element der gesamten Vorrichtung ist eine
Schleifeinrichtung 4. Diese ist aus Figur 1 erkennbar, aber noch genauer aus
Fig. 2. Die Schleifeinrichtung 4 umfaßt eine Mehrzahl von Schleifscheiben 4.1.
Im vorliegenden Falle handelt es sich um vier Schleifscheiben. Diese vier
Schleifscheiben sitzen auf einer gemeinsamen Antriebswelle 4.2. Diese ist
antreibbar mittels eines Antriebsmotors 4.3 und ein Kegelradgetriebe 4.4. Man
erkennt ferner einen Spindelantrieb mit Schrittmotor 4.5.The crucial element of the entire device is one
Die gesamte Vorrichtung arbeitet wie folgt: The entire device works as follows:
Sobald die Messer 4.1 nicht mehr die notwendige Schärfe haben, wird der
gesamte Messerkorb aus dem Zerspaner mittels der Schleifstation 1
herausgenommen. Sodann wird die Schleifeinrichtung 4 in den vom
Messerkorb 2 umschlossenen Innenraum eingeführt. Dabei wird die
Schleifeinrichtung 4 derart positioniert, daß jede Schleifscheibe 4.1 einem zu
schleifenden Messer 3.3 gegenüberliegt. Der Antriebsmotor 4.3 setzt die
Schleifscheiben 4.1 über das Kegelradgetriebe 4.4 und die Antriebswelle 4.2
in Umdrehung, und der Schrittmotor 4.5 fährt die gesamte Einheit in Richtung
des Doppelpfeiles - in Fig. 2 gesehen - nach links, so daß die
Umfangsflächen der Schleifscheiben 4.1 an den zu schleifenden Flächen der
Messer 3.3 zum Anliegen kommen.As soon as the knives 4.1 no longer have the necessary sharpness, the
Entire knife basket from the chipper using the
Entscheidend ist, daß während des Schleifens eines Messers oder einer Gruppe von Messern keine Drehbewegung des Messerkorbes relativ zur Schleifeinrichtung erfolgt.It is crucial that while sharpening a knife or a Group of knives no rotational movement of the knife basket relative to Grinding device is carried out.
Es ist ein weiterer Antrieb vorgesehen, von dem hier nur die Welle 5
symbolisch dargestellt ist. Dieser Antrieb erzeugt eine Bewegung der
Schleifeinrichtung 4 parallel zur Achse des Messerkörpers 2 und zugleich
parallel zu den Schneiden der Messer 3.3. Dabei kann das Schleifen eines
jeden Messers mit einem einzigen Hin- oder Hergang der Schleifeinrichtung 4
vollendet sein. Es ist aber auch möglich, zwei oder mehrere Bewegungen in
einen und in der anderen Richtung auszuführen.Another drive is provided, of which only
Die Schleifeinrichtung 4 kann eine andere Zahl von Schleifscheiben 4.1
aufweisen als die hier dargestellte Zahl von vier Schleifscheiben. So braucht
nur eine einzige Schleifscheibe vorgesehen zu werden. Es können aber auch
mehr als vier Schleifscheiben vorgesehen werden.The
Es ist ferner möglich, die Schleifscheiben 4.1 derart anzuordnen, daß sie in
Radialebenen verlaufen, die somit durch den Mittelpunkt des Messerkorbes 2
verlaufen. Dies gilt sowohl für den Fall einer einzigen Schleifscheibe pro
Schleifeinrichtung 4, als auch für den Fall, daß eine Schleifeinrichtung 4 eine
Mehrzahl von Schleifscheiben aufweist.It is also possible to arrange the grinding wheels 4.1 such that they are in
Radial planes run through the center of the
Auch ist es denkbar, die Neigung der einzelnen Schleifscheiben 4.1 zu verändern, so daß der Winkel, der den Messern 3.3 angeschliffen wird, variabel ist.It is also conceivable to increase the inclination of the individual grinding wheels 4.1 change, so that the angle, which is sharpened the knives 3.3, is variable.
Wie in Fig. 3 veranschaulicht, läßt sich mit der Schleifscheibe 4.1 dem Messer 3.3 ein Freiwinkel anschleifen.As illustrated in FIG. 3, the knife can be grinded with the grinding wheel 4.1 3.3 Grind a clearance angle.
Claims (9)
- A process for grinding the cutters (3.3) of a chipping machine, whereby the cutters (3.3) remain in the cutter case (2) during grinding and the cutter case (2) is removed from the chipping machine and inserted into a cutter case holder (1), wherein it is swivel-mounted, characterised by the following procedural steps:the cutter case (2) is secured against torsion;a grinding mechanism (4) having one or more cutting tools is moved in a direction parallel to the axis of the cutter case along a first cutter or along a first group of cutters for the purpose of grinding, whereby the grinding mechanism (4) and the cutter case (2) are torsionally solid relative to one another;after the first cutter is ground or the first group of cutters (3.3) is ground the locking piston is lifted and grinding tools (4) and cutter case rotate relative to one another, such that the grinding tool (4) assumes a new working position in order to grind another cutter or another group of cutters (3.3);the cycle of lifting the locking piston and rotation of grinding tool (4) and cutter case (2) relative to one another is continued until all cutters (3.3) are ground;the cutter case (2) is then reinserted into the chipping machine.
- A process as claimed in Claim 1, characterised in that before the cutters (3.3) are ground the working surface of the individual grinding tools (4) are brought into such a position relative to the cutting edges of the cutters (3.3) that a clearance angle is ground.
- A process as claimed in Claim 1 or 2, characterised in that one or more grinding wheels are set as grinding tool of the grinding mechanism (4).
- A device for grinding the cutters (3.3) of a chipping machine, whereby the cutters (3.3) remain in the cutter case (2) during grinding, having a cutter case holder (1), in which the cutter case holder (3) can be swivel-mounted after it is withdrawn from the chipping machine, characterised by the following features:a device for securing the cutter case (2) from rotating about its own axis;a grinding mechanism (4) having one or more grinding tools;the grinding tool (4) can be moved in a direction parallel to the axis of the cutter case in either direction along the cutters (3.3) for grinding;grinding tool (4) and cutter case (2) can be rotated in phase relative to one another in order to bring the grinding tool (4) into a new working position after a cutter or a group of cutters (3.3) has been ground.
- A device as claimed in Claim 4, characterised in that the working surface of the grinding tools(s) relative to the cutting edges of the cutters (3.3) can be brought into such a position that a clearance angle is ground.
- A device as claimed in Claim 4 or 5, characterised in that the grinding mechanism exhibits a plurality of grinding wheels (4.1) as grinding tools, each of which is assigned to a cutter (3.3) and in the working state rests with its working surface on the corresponding cutter (3.3).
- A device as claimed in Claim 6, characterised in that all grinding wheels (4.1) sit on a single drive shaft (4.2).
- A device as claimed in Claim 6, characterised in that each grinding wheel (4.1) has its own drive shaft.
- A device as claimed in Claim 8, characterised in that each grinding wheel is arranged in a radial plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19641810A DE19641810C1 (en) | 1996-10-10 | 1996-10-10 | Device for sharpening blades of woodchip cutter |
| DE19641810 | 1996-10-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0835721A1 EP0835721A1 (en) | 1998-04-15 |
| EP0835721B1 true EP0835721B1 (en) | 2001-11-21 |
Family
ID=7808384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97114820A Expired - Lifetime EP0835721B1 (en) | 1996-10-10 | 1997-08-27 | Method and device for dressing the knives of a crusher |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5964648A (en) |
| EP (1) | EP0835721B1 (en) |
| KR (1) | KR100479645B1 (en) |
| BR (1) | BR9704997A (en) |
| DE (2) | DE19641810C1 (en) |
| ES (1) | ES2168554T3 (en) |
| PL (1) | PL184595B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2556920A2 (en) | 2011-08-09 | 2013-02-13 | Siempelkamp Maschinen- und Anlagenbau GmbH & Co. KG | Device for sharpening knives of a knife ring for a knife ring flaker |
| DE102011052531A1 (en) | 2011-08-09 | 2013-02-14 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Method for sharpening, particularly re-sharpening of blades or wear plates of blade ring flaker, involves fastening blades and wear plates at blade ring |
| DE202015002132U1 (en) | 2015-03-20 | 2016-05-23 | B. Maier Zerkleinerungstechnik Gmbh | Device for grinding knives and wear plates of the knife ring of a knife ring chipper |
| DE102015003520A1 (en) | 2015-03-20 | 2016-09-22 | B. Maier Zerkleinerungstechnik Gmbh | Method and device for grinding knives and wear plates of a knife ring |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19718681A1 (en) * | 1997-05-02 | 1998-11-05 | Maier Zerkleinerungstech Gmbh | Knife ring chipper |
| KR20020006937A (en) * | 2000-07-14 | 2002-01-26 | 석청기 | Shot abrader |
| CN104148995B (en) * | 2013-05-14 | 2016-11-02 | 莆田市城厢区创响信息技术有限公司 | Tooling equipment and processing method thereof |
| CN105397657A (en) * | 2015-11-27 | 2016-03-16 | 威海市威力高档工具有限公司 | Double-spring linkage multi-position lock wrench |
| CN112677201B (en) * | 2020-12-16 | 2023-06-16 | 深圳市华丰电器器件制造有限公司 | Board cutting and polishing equipment for circuit board production |
| CN113414646B (en) * | 2021-07-05 | 2022-07-05 | 南京硕辉机械制造有限公司 | Intelligent grinding device for high-speed cutting metal cutter |
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| US1781674A (en) * | 1927-07-14 | 1930-11-18 | Ashworth William Hale | Automatic planer-knife grinder |
| US2620606A (en) * | 1951-01-11 | 1952-12-09 | Edwin A Dvorak | Portable jointer knife grinder |
| US3494081A (en) * | 1967-12-07 | 1970-02-10 | Philip Morris Inc | Process of forming a blade cutting edge |
| US3643381A (en) * | 1970-09-21 | 1972-02-22 | George M Standal | Knife grinder |
| DE2932629A1 (en) * | 1979-08-11 | 1981-02-26 | Hauni Werke Koerber & Co Kg | Grinding device for tobacco cutter blades - monitors cutting dia. via sensor to automatically adjust setting of grinding disc |
| US4340099A (en) * | 1980-08-05 | 1982-07-20 | Mainland Industries, Inc. | Chipper machine |
| DE3146433C2 (en) * | 1981-11-24 | 1987-02-19 | Claas Saulgau GmbH, 7968 Saulgau | Grinding device for the chopping knives on drum chippers |
| DE4114840C2 (en) * | 1991-05-07 | 1995-01-19 | Pallmann Kg Maschf | Method and device for the automatic replacement of regrindable knives in wood cutting machines |
| DE4316514C2 (en) * | 1993-05-18 | 1996-02-08 | Pallmann Kg Maschf | Method and device for resharpening the knives of comminution machines |
| DE19605072C1 (en) * | 1996-02-12 | 1997-10-02 | Pallmann Kg Maschf | Device for sharpening cutting tool fittings in wood chip-producing machine |
-
1996
- 1996-10-10 DE DE19641810A patent/DE19641810C1/en not_active Expired - Lifetime
-
1997
- 1997-08-27 DE DE59705461T patent/DE59705461D1/en not_active Expired - Lifetime
- 1997-08-27 ES ES97114820T patent/ES2168554T3/en not_active Expired - Lifetime
- 1997-08-27 EP EP97114820A patent/EP0835721B1/en not_active Expired - Lifetime
- 1997-09-29 KR KR1019970049658A patent/KR100479645B1/en not_active IP Right Cessation
- 1997-10-08 PL PL97322481A patent/PL184595B1/en unknown
- 1997-10-09 US US08/948,339 patent/US5964648A/en not_active Expired - Lifetime
- 1997-10-09 BR BR9704997-2A patent/BR9704997A/en not_active IP Right Cessation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2556920A2 (en) | 2011-08-09 | 2013-02-13 | Siempelkamp Maschinen- und Anlagenbau GmbH & Co. KG | Device for sharpening knives of a knife ring for a knife ring flaker |
| DE102011052531A1 (en) | 2011-08-09 | 2013-02-14 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Method for sharpening, particularly re-sharpening of blades or wear plates of blade ring flaker, involves fastening blades and wear plates at blade ring |
| DE102011052538A1 (en) | 2011-08-09 | 2013-02-14 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Device for sharpening knives of a knife ring for a knife ring chipper |
| DE102011052531B4 (en) * | 2011-08-09 | 2017-09-07 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Method and device for grinding knives and wear plates of a knife ring chipper |
| DE202015002132U1 (en) | 2015-03-20 | 2016-05-23 | B. Maier Zerkleinerungstechnik Gmbh | Device for grinding knives and wear plates of the knife ring of a knife ring chipper |
| DE102015003520A1 (en) | 2015-03-20 | 2016-09-22 | B. Maier Zerkleinerungstechnik Gmbh | Method and device for grinding knives and wear plates of a knife ring |
| DE102015003520B4 (en) * | 2015-03-20 | 2016-11-24 | B. Maier Zerkleinerungstechnik Gmbh | Method and device for grinding knives and wear plates of a knife ring |
Also Published As
| Publication number | Publication date |
|---|---|
| PL184595B1 (en) | 2002-11-29 |
| US5964648A (en) | 1999-10-12 |
| KR19980032427A (en) | 1998-07-25 |
| EP0835721A1 (en) | 1998-04-15 |
| KR100479645B1 (en) | 2005-07-11 |
| DE59705461D1 (en) | 2002-01-03 |
| ES2168554T3 (en) | 2002-06-16 |
| BR9704997A (en) | 2000-06-06 |
| DE19641810C1 (en) | 1997-11-27 |
| PL322481A1 (en) | 1998-04-14 |
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