EP2660021A1 - Cutting tool - Google Patents
Cutting tool Download PDFInfo
- Publication number
- EP2660021A1 EP2660021A1 EP13163331.5A EP13163331A EP2660021A1 EP 2660021 A1 EP2660021 A1 EP 2660021A1 EP 13163331 A EP13163331 A EP 13163331A EP 2660021 A1 EP2660021 A1 EP 2660021A1
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- EP
- European Patent Office
- Prior art keywords
- blade
- cutting
- region
- cutting tool
- tool according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4409—Cutters therefor; Dies therefor having die balancing or compensating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4436—Materials or surface treatments therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4463—Methods and devices for rule setting, fixation, preparing cutting dies
Definitions
- the present invention relates according to the preamble of independent claim 1, a cutting tool for pressure cutting in particular in the paper and cardboard industry, consisting of a band-shaped blade made of steel, at one longitudinal edge of a hardened cutting area with a cutting edge and at the other longitudinal edge an investment area with a Anückücken for supporting the blade in a receiving slot of a plate-shaped tool carrier, wherein the blade between the cutting area and the abutment area has a strip-shaped longitudinal direction in the longitudinal deformation zone such that the blade at the pressure cut in the blade transverse direction by applying a compressive force with changing its blade height is compressible.
- the deformation zone can be formed by a blade area with a blade-like cross-section reduced in diameter.
- Such cutting tools are used for example in the cardboard industry to produce blanks for cartons or boxes from a cardboard or cardboard material. This is usually done by means of punching devices, which receive the blade-shaped cutting tools so that the present on a blade longitudinal side cutting perpendicular to the material plane penetrates into the material. As a result, the blanks on the one hand cut and on the other hand also scratched and / or compressed to form fold lines by only a partial cutting, the fold lines allow unfolding of the blank.
- the cutting tools which may be bent in some areas to form the Stanfordstanzenden mold, are held in the tool carrier, that they are exactly in one plane with the cutting Otherwise, the material can not be reliably cut or scratched evenly at each point. Therefore, it has hitherto been necessary to accurately trim the cutting tools by area-by-area placement with compensating strips. This dressing was associated with a great deal of time and effort.
- the closest generic document DE 199 31 216 C1 also describes a band-shaped punching knife for mounting in a slot of a knife carrier.
- This known punching knife consists of strip steel with a hardened edge formed as a cutting edge, with a rear abutment surface opposite the hardened cutting edge and with a cross-section reduced area forming a deformation zone.
- the deformation zone should be arranged at such a distance from the rear contact surface, that it is in the inserted into the slot of the carrier state in the region of a slot extension, which usually arises when the slot by a laser processing in the rule out Wood existing, plate-shaped tool carrier is generated.
- a guide of the punching blade against lateral tilting is to be achieved by the punching knife is guided in the region of the two end, opposite edges of the receiving slot of the slot walls.
- a lateral guide is not given anyway because of the slot extension, so that the cross-sectional reduction of the blade does not adversely affect.
- the present invention is based on the object to further improve such a cutting blade of the generic type in terms of its performance characteristics and / or in terms of its manufacturability.
- this is achieved in that the rear abutment region of the blade as well as the cutting region is hardened and consequently has a hardness corresponding to the hardness of the cutting region.
- This ensures a firm and permanently secure support of the blade within the tool carrier.
- the hardened contact area of the blade on the hardened steel plate of the tool carrier to the plant, which is advantageous for a secure fit of the blade with good guidance in the tool.
- the contact area has a hardness corresponding to the hardness of the cutting area
- the hardness both in the region of the cutting edge and in the region of the backside in the range of at least 50 HRC to
- a maximum of 70 HRC is, but the concrete hardness values of the cutting area on the one hand and the contact area on the other hand may differ, provided that they each amount to at least 50 HRC. This means that between 50 HRC and eg 70 HRC differences of up to 20 HRC are possible.
- the reduced blade cross-section in the region of the deformation zone is provided according to the invention is formed by a scraping process.
- the term "cockroaches" is to be understood as a drawing process in which the band-shaped material of the blade is moved in the longitudinal direction, ie pulled relative to a machining tool, in order to achieve the desired cross-sectional reduction by cutting material removal in a manner similar to a rotary turning operation.
- the strip material can be pressed against a so-called drawing template, which has a shape corresponding to the desired contour and thereby causes the machining.
- This measure according to the invention leads to a cost-effective production by simple and fast processing.
- the production by cockroaches can be recognized on the finished product by fine elongation depths in cross-section reduced area.
- a cross-sectional reduction is unnecessary, whereby the corresponding processing step can be saved.
- a reduction in hardness can be achieved quickly and cost-effectively by zonal tempering, in particular in a continuous flow process.
- the blade - apart from the hardened cutting area and optionally the hardened contact area and also apart from the optionally reduced hardness in the region of the deformation zone - has a basic hardness in the range of 25 HRC to 45 HRC.
- the hardness of the deformation zone which is reduced according to the invention by 5 to 10 HRC, is therefore in the range from 15 HRC to 40 HRC.
- a cutting tool 1 consists of a strip-shaped blade 2 made of steel, which at one longitudinal edge has a hardened cutting region 4 with a cutting edge 4a and at the other, opposite longitudinal edge a contact region 6 with a Anückücken 6a for supporting the blade 2 in a receiving slot 8 of a plate-shaped tool carrier 10, see Fig. 8 ,
- the blade 2 between the cutting region 4 and the abutment region 6 at least one deformation zone 12 extending in the form of a strip in the longitudinal direction of the blade such that the blade 2 in an application for pressure cutting - see in particular Fig. 8 - In blade-transverse direction by applying a compressive force F under elastic and / or plastic change their blade height H - see Fig. 1 and 4 - is compressible.
- a compressive force F under elastic and / or plastic change their blade height H - see Fig. 1 and 4 - is compressible.
- the abutment region 6 has a hardness corresponding to the hardness of the hardened cutting region 4.
- the hardness of both the cutting area 4 and the contact area 6 is at least 50 HRC.
- the maximum achievable hardness is up to 70 HRC.
- the hardness of the cutting area 4 and on the other hand each in the range of 50 HRC to 70 HRC, but may differ within this range.
- the deformation zone 12 is formed by a portion of the blade 2, which has a compared to the hardness of the blade 2 by 5 HRC to 10 HRC reduced hardness.
- this partial region of the blade 2 forming the deformation zone 12 has an unchanged cross-section, ie in particular an unchanged thickness D of the blade 2.
- a basic hardness of the blade 2 in its respective regions adjacent to the deformation zone 12 is in the range of 25 HRC to 45 HRC.
- the reduction according to the invention by 5 HRC to 10 HRC results in a value for the reduced hardness of the deformation zone 12 which is in the range from 15 HRC to 40 HRC.
- the blade 2 in this area can have a waist-like reduced blade cross section, to which the illustrations in FIG Fig. 4, 5 and 8th is referenced.
- this cross-sectional reduction can be formed in particular by a scraping process.
- the reduced blade cross-section of the deformation zone 12 is preferably formed by symmetrical recesses 14 of the blade 2 on both sides, each recess 14 being delimited by flanks 16 arranged at an angle, in particular at right angles to the blade plane, and having an in particular slightly concave base surface 18.
- the blade 2 may have a total blade height H in the range of 15 to 100 mm, preferably 20 to 25 mm, in particular 23.8 mm, and a blade thickness D in the range of 0.4 to 2.1 mm.
- the hardened cutting area 4 as well as the hardened contact area 6 each have a height h1 of up to 1 mm.
- the deformation zone 12 preferably has a height h2 in the range of 8 to 10 mm, in particular 9 mm. Between the deformation zone 12 and the cutting area 4, a blade area 20 with a height h3 in the range of 8 to 8.5 mm, in particular 8.3 mm, is arranged.
- a blade region 22 is arranged, which has a height h4 in the range of 1 to 4.5 mm.
- the blade 2 has the previously defined basic hardness of 25 HRC to 45 HRC.
- the cutting edge 4a As far as the cutting area 4 is concerned, in principle any desired embodiments are possible for forming the cutting edge 4a.
- the cutting area 4 to form the cutting edge 4a to a longitudinal center plane of the blade 2, not shown, symmetrical chamfers 24, according to Fig. 1 and 2 as simple chamfer or according to 6 and 7 may be formed as facets with two double felts.
- the chamfers 24 may extend over a partial area of the height h1 of the cutting area 4 or according to FIG Fig. 7 over at least the entire height h1.
- the abutment region 6 may have chamfers 26 in the outer edge region, so that the surface of the abutment back 6a is correspondingly narrower than the thickness D of the blade 2.
- the deformation zone 12 is disposed in a region of the blade 2, which sits for the pressure cut within the receiving slot 8 of the tool carrier 10, in particular in the region of a slot extension existing there 28.
- the Anückücken 6a is based on a receiving slot 8 back covering steel plate 30 from.
- the invention is not limited to the illustrated and described embodiments, but also includes all the same in the context of the invention embodiments. It is expressly emphasized that the exemplary embodiments are not limited to all the features in combination, but rather each individual partial feature may also have an inventive meaning independently of all other partial features. Furthermore, the invention has hitherto not been limited to the combination of features defined in the respective independent claim, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of the respective independent claim can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claims are to be understood merely as a first formulation attempt for an invention.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Studio Devices (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft gemäß dem Oberbegriff des unabhängigen Anspruchs 1 ein Schneidwerkzeug zum Druckschnitt insbesondere in der Papier- und Kartonagenindustrie, bestehend aus einer bandförmigen Klinge aus Stahl, die an einem Längsrand einen gehärteten Schneidbereich mit einer Schneide und am anderen Längsrand einen Anlagebereich mit einem Anlagerücken zum Abstützen der Klinge in einem Aufnahmeschlitz eines plattenförmigen Werkzeugträgers aufweist, wobei die Klinge zwischen dem Schneidbereich und dem Anlagebereich eine streifenförmig in Klingen-Längsrichtung verlaufende Verformungszone derart aufweist, dass die Klinge beim Druckschnitt in Klingen-Querrichtung durch Beaufschlagung mit einer Druckkraft unter Änderung ihrer Klingenhöhe stauchverformbar ist.The present invention relates according to the preamble of
Optional kann hierbei die Verformungszone durch einen Klingenbereich mit einem taillenartig reduzierten Klingenquerschnitt gebildet sein.Optionally, in this case, the deformation zone can be formed by a blade area with a blade-like cross-section reduced in diameter.
Solche Schneidwerkzeuge werden beispielsweise in der Kartonagenindustrie eingesetzt, um aus einem Karton- oder Pappmaterial Zuschnitte für Kartons oder Schachteln herzustellen. Dies geschieht üblicherweise mittels Stanzvorrichtungen, die die klingenförmigen Schneidwerkzeuge so aufnehmen, dass die an einer Klingen-Längsseite vorhandene Schneide senkrecht zur Materialebene in das Material eindringt. Hierdurch können die Zuschnitte einerseits ausgeschnitten sowie andererseits auch zur Bildung von Faltlinien durch ein nur teilweises Anschneiden angeritzt und/oder gestaucht werden, wobei die Faltlinien ein Auffalten des Zuschnitts ermöglichen. Für die Anwendung ist es sehr wichtig, dass die Schneidwerkzeuge, die bereichsweise zur Bildung der auszustanzenden Form gebogen sein können, so in dem Werkzeugträger gehalten sind, dass sie mit den Schneiden exakt in einer Ebene liegen, da ansonsten das Material nicht zuverlässig an jeder Stelle gleichmäßig durchtrennt oder angeritzt werden kann. Deshalb war es bisher erforderlich, die Schneidwerkzeuge genau zuzurichten, und zwar durch bereichsweises Hinterlegen mit Ausgleichsstreifen. Dieses Zurichten war mit einem hohen Zeit- und Müheaufwand verbunden.Such cutting tools are used for example in the cardboard industry to produce blanks for cartons or boxes from a cardboard or cardboard material. This is usually done by means of punching devices, which receive the blade-shaped cutting tools so that the present on a blade longitudinal side cutting perpendicular to the material plane penetrates into the material. As a result, the blanks on the one hand cut and on the other hand also scratched and / or compressed to form fold lines by only a partial cutting, the fold lines allow unfolding of the blank. For the application, it is very important that the cutting tools, which may be bent in some areas to form the auszustanzenden mold, are held in the tool carrier, that they are exactly in one plane with the cutting Otherwise, the material can not be reliably cut or scratched evenly at each point. Therefore, it has hitherto been necessary to accurately trim the cutting tools by area-by-area placement with compensating strips. This dressing was associated with a great deal of time and effort.
Deshalb beschreibt das Dokument
Das nächstkommende, gattungsbildende Dokument
Der vorliegenden Erfindung liegt nun die Aufgabe zu Grunde, ein solches Schneidmesser der gattungsgemäßen Art weitergehend hinsichtlich seiner Gebrauchseigenschaften und/oder hinsichtlich seiner Herstellbarkeit zu verbessern.The present invention is based on the object to further improve such a cutting blade of the generic type in terms of its performance characteristics and / or in terms of its manufacturability.
In einem ersten Aspekt der Erfindung wird dies dadurch erreicht, dass der rückseitige Anlagebereich der Klinge ebenso wie der Schneidbereich gehärtet ist und folglich eine der Härte des Schneidbereiches entsprechende Härte aufweist. Dadurch wird eine feste und dauerhaft sichere Abstützung der Klinge innerhalb des Werkzeugträgers gewährleistet. In aller Regel weist der Werkzeugträger auf der Rückseite einer Holz-Aufnahmeplatte eine gehärtete Stahlplatte auf, auf der sich die Klinge mit ihrem Anlagerücken abstützt. Erfindungsgemäß kommt folglich der gehärtete Anlagebereich der Klinge auf der gehärteten Stahlplatte des Werkzeugträgers zur Anlage, was für einen sicheren Sitz der Klinge mit guter Führung im Werkzeug vorteilhaft ist. In zweckmäßiger Ausgestaltung beträgt die Härte des Schneidbereiches und gemäß der Erfindung auch des Anlagebereiches jeweils mindestens 50 HRC (HRC = Rockwell-Härte gemäß Skala C).In a first aspect of the invention, this is achieved in that the rear abutment region of the blade as well as the cutting region is hardened and consequently has a hardness corresponding to the hardness of the cutting region. This ensures a firm and permanently secure support of the blade within the tool carrier. As a rule, the tool carrier on the back of a wood-receiving plate on a hardened steel plate on which the blade is supported with her Anückücken. According to the invention thus comes the hardened contact area of the blade on the hardened steel plate of the tool carrier to the plant, which is advantageous for a secure fit of the blade with good guidance in the tool. In an advantageous embodiment, the hardness of the cutting area and according to the invention also the contact area in each case at least 50 HRC (HRC = Rockwell hardness according to scale C).
Ergänzend dazu sei bemerkt, dass die Angabe "der Anlagebereich weist eine der Härte des Schneidbereiches entsprechende Härte auf" im erfindungsgemäßen Sinne so zu verstehen ist, dass die Härte sowohl im Bereich der Schneide als auch im Bereich des Anlagerückens im Bereich von mindestens 50 HRC bis beispielsweise maximal 70 HRC liegt, wobei aber die konkreten Härtewerte des Schneidbereiches einerseits und des Anlagebereiches andererseits voneinander abweichen können, sofern sie jeweils mindestens 50 HRC betragen. Dies bedeutet, dass zwischen 50 HRC und beispielsweise 70 HRC Unterschiede von maximal bis zu 20 HRC möglich sind.In addition, it should be noted that the statement "the contact area has a hardness corresponding to the hardness of the cutting area" in the sense of the invention is to be understood that the hardness both in the region of the cutting edge and in the region of the backside in the range of at least 50 HRC to For example, a maximum of 70 HRC is, but the concrete hardness values of the cutting area on the one hand and the contact area on the other hand may differ, provided that they each amount to at least 50 HRC. This means that between 50 HRC and eg 70 HRC differences of up to 20 HRC are possible.
Gemäß einem zweiten, optional auch unabhängig vom ersten Aspekt zu sehenden Erfindungsaspekt ist bei einer Ausführung, bei der die Verformungszone durch einen Klingenbereich mit einem reduzierten Klingenquerschnitt gebildet ist, erfindungsgemäß vorgesehen, dass der reduzierte Klingenquerschnitt im Bereich der Verformungszone durch einen Schab-Vorgang gebildet ist. Unter dem Begriff "Schaben" ist ein Ziehvorgang zu verstehen, wobei das bandförmige Material der Klinge in Längsrichtung bewegt, d. h. relativ zu einem Bearbeitungswerkzeug gezogen wird, um - analog zu einem rotatorischen Drehvorgang - durch spanenden Materialabtrag die gewünschte Querschnittsreduzierung zu erreichen. Hierzu kann das Bandmaterial gegen eine so genannte Ziehschablone gepresst werden, die eine der gewünschten Kontur entsprechende Form aufweist und dadurch die spanende Bearbeitung bewirkt. Diese erfindungsgemäße Maßnahme führt zu einer kostengünstigen Herstellung durch einfache und schnelle Bearbeitung. Die Herstellung durch Schaben kann am fertigen Produkt durch feine Längeriefen im querschnittsreduzierten Bereich erkannt werden.According to a second aspect of the invention, optionally also independent of the first aspect, in an embodiment in which the deformation zone is formed by a blade region with a reduced blade cross-section, the reduced blade cross-section in the region of the deformation zone is provided according to the invention is formed by a scraping process. The term "cockroaches" is to be understood as a drawing process in which the band-shaped material of the blade is moved in the longitudinal direction, ie pulled relative to a machining tool, in order to achieve the desired cross-sectional reduction by cutting material removal in a manner similar to a rotary turning operation. For this purpose, the strip material can be pressed against a so-called drawing template, which has a shape corresponding to the desired contour and thereby causes the machining. This measure according to the invention leads to a cost-effective production by simple and fast processing. The production by cockroaches can be recognized on the finished product by fine elongation depths in cross-section reduced area.
Alternativ zu der zuletzt erläuterten Ausführung kann auch vorgesehen sein, die Verformungszone durch einen Klingenbereich mit einer gegenüber der Härte der Klinge um 5 HRC bis 10 HRC reduzierter Härte zu bilden. Dadurch kann sich eine Querschnittsreduzierung erübrigen, wodurch der entsprechende Bearbeitungsschritt eingespart werden kann. Eine Reduzierung der Härte kann durch zonales Anlassen insbesondere in einem kontinuierlichen Durchlaufverfahren schnell und kostengünstig erreicht werden.As an alternative to the last-mentioned embodiment, it may also be provided to form the deformation zone by a blade area with a hardness reduced by 5 HRC to 10 HRC compared with the hardness of the blade. As a result, a cross-sectional reduction is unnecessary, whereby the corresponding processing step can be saved. A reduction in hardness can be achieved quickly and cost-effectively by zonal tempering, in particular in a continuous flow process.
Es liegt aber auch im Bereich der Erfindung, beide Maßnahmen zu kombinieren, d. h. die Verformungszone durch Querschnittsreduzierung und mit reduzierter Härte zu bilden.It is also within the scope of the invention to combine both measures, d. H. To form the deformation zone by cross-section reduction and with reduced hardness.
In zweckmäßiger Ausgestaltung ist weiterhin vorgesehen, dass die Klinge - abgesehen von dem gehärteten Schneidbereich und gegebenenfalls dem gehärteten Anlagebereich sowie auch abgesehen von der gegebenenfalls reduzierten Härte im Bereich der Verformungszone - eine Grundhärte im Bereich von 25 HRC bis 45 HRC aufweist. Bei der zuvor erläuterten Ausführung, wobei die Verformungszone eine gegenüber der übrigen Klinge reduzierte Härte aufweist, liegt folglich die erfindungsgemäß um 5 bis 10 HRC reduzierte Härte der Verformungszone im Bereich von 15 HRC bis 40 HRC.In an advantageous embodiment is further provided that the blade - apart from the hardened cutting area and optionally the hardened contact area and also apart from the optionally reduced hardness in the region of the deformation zone - has a basic hardness in the range of 25 HRC to 45 HRC. In the previously explained embodiment, wherein the deformation zone has a reduced hardness compared to the other blade, the hardness of the deformation zone, which is reduced according to the invention by 5 to 10 HRC, is therefore in the range from 15 HRC to 40 HRC.
Weitere vorteilhafte Ausgestaltungsmerkmale der Erfindung sind in den abhängigen Ansprüchen sowie auch in der anschließenden Beschreibung enthalten.Further advantageous features of the invention are contained in the dependent claims as well as in the subsequent description.
Anhand einiger, in den Zeichnungen veranschaulichter, vorteilhafter Ausführungs- und Anwendungsbeispiele soll die Erfindung im Folgenden weitergehend erläutert werden. Es zeigen:
- Fig. 1
- einen vergrößerten Querschnitt eines erfindungsgemäßen Schneidwerkzeugs in einer ersten Ausführungsform,
- Fig. 2
- eine Ausschnittvergrößerung des Schneidbereiches II gemäß
Fig. 1 , - Fig. 3
- eine Ausschnittvergrößerung des Anlagebereiches III gemäß
Fig. 1 , - Fig. 4
- eine Schnittansicht analog zu
Fig. 1 einer zweiten Ausführungsform des erfindungsgemäßen Schneidwerkzeuges, - Fig. 5
- eine Ausschnittvergrößerung des Bereiches V gemäß
Fig. 4 , d. h. der Verformungszone, - Fig. 6 und 7
- jeweils eine zu
Fig. 2 alternative Ausführung des Schneidbereiches und - Fig. 8
- einen Querschnitt durch einen Teilbereich eines Werkzeugträgers mit einem eingesetzten erfindungsgemäßen Schneidwerkzeug, beispielhaft in der Ausführungsform gemäß
Fig. 4 .
- Fig. 1
- an enlarged cross section of a cutting tool according to the invention in a first embodiment,
- Fig. 2
- a detail enlargement of the cutting area II according to
Fig. 1 . - Fig. 3
- a detail enlargement of the investment area III according to
Fig. 1 . - Fig. 4
- a sectional view analogous to
Fig. 1 a second embodiment of the cutting tool according to the invention, - Fig. 5
- a detail enlargement of the area V according to
Fig. 4 ie the deformation zone, - 6 and 7
- one to each
Fig. 2 alternative embodiment of the cutting area and - Fig. 8
- a cross section through a portion of a tool carrier with an inserted cutting tool according to the invention, for example in the embodiment according to FIG
Fig. 4 ,
In den verschiedenen Figuren der Zeichnung sind gleiche Teile stets mit den gleichen Bezugszeichen versehen.In the various figures of the drawing, like parts are always provided with the same reference numerals.
Zu der anschließenden Beschreibung wird ausdrücklich betont, dass die Erfindung nicht auf die Ausführungsbeispiele und dabei nicht auf alle oder mehrere Merkmale von beschriebenen Merkmalskombinationen beschränkt ist, vielmehr kann jedes einzelne Teilmerkmal des/jedes Ausführungsbeispiels auch losgelöst von allen anderen im Zusammenhang damit beschriebenen Teilmerkmalen für sich und auch in Kombination mit beliebigen Merkmalen eines anderen Ausführungsbeispiels sowie auch unabhängig von den Merkmalskombinationen und Rückbeziehungen der Ansprüche eine erfinderische Bedeutung haben.For the following description, it is expressly emphasized that the invention is not limited to the exemplary embodiments and not to all or several features of described combinations of features, but each individual feature of the / each embodiment can also be detached from all other partial features described in connection therewith and also in combination with any features of another embodiment as well as independently of the feature combinations and relationships of the claims have an inventive meaning.
Ein erfindungsgemäßes Schneidwerkzeug 1 besteht aus einer streifen- bzw. bandförmigen Klinge 2 aus Stahl, die an einem Längsrand einen gehärteten Schneidbereich 4 mit einer Schneide 4a und am anderen, gegenüberliegenden Längsrand einen Anlagebereich 6 mit einem Anlagerücken 6a zum Abstützen der Klinge 2 in einem Aufnahmeschlitz 8 eines plattenförmigen Werkzeugträgers 10 aufweist, siehe dazu
Gemäß
Als ein erster Erfindungsaspekt ist nun vorgesehen, dass der Anlagebereich 6 eine der Härte des gehärteten Schneidbereiches 4 entsprechende Härte aufweist. Hierbei beträgt die Härte sowohl des Schneidbereiches 4 als auch des Anlagebereiches 6 jeweils mindestens 50 HRC. Die maximal erreichbare Härte liegt bei bis zu 70 HRC. Somit liegen einerseits die Härte des Schneidbereiches 4 und andererseits die Härte des Anlagebereiches 6 jeweils im Bereich von 50 HRC bis 70 HRC, können aber innerhalb dieses Bereiches voneinander abweichen.As a first aspect of the invention it is now provided that the
Bei der Ausführungsform gemäß
In bevorzugter Ausgestaltung liegt eine Grundhärte der Klinge 2 in ihren jeweils an die Verformungszone 12 angrenzenden Bereichen im Bereich von 25 HRC bis 45 HRC. Durch die erfindungsgemäße Reduzierung um 5 HRC bis 10 HRC ergibt sich für die reduzierte Härte der Verformungszone 12 ein Wert, der im Bereich von 15 HRC bis 40 HRC liegt.In a preferred embodiment, a basic hardness of the
Zusätzlich oder aber alternativ zu der reduzierten Härte im Bereich der Verformungszone 12 kann die Klinge 2 in diesem Bereich einen taillenartig reduzierten Klingenquerschnitt aufweisen, wozu auf die Darstellungen in
An dieser Stelle sei noch erwähnt, dass durch eine bestimmte Auslegung der Härte und/oder der reduzierten Querschnittsform im Bereich der Verformungszone 12 erreicht werden kann, dass bei der Benutzung eine elastische und/oder plastische Stauchverformbarkeit gegeben ist.At this point it should be mentioned that it can be achieved by a specific design of the hardness and / or the reduced cross-sectional shape in the region of the
Abschließend sollen noch einige bevorzugte Maße für das erfindungsgemäße Schneidwerkzeug 1 beispielhaft angegeben werden.Finally, some preferred dimensions for the
Die Klinge 2 kann eine Gesamt-Klingenhöhe H im Bereich von 15 bis 100 mm, bevorzugt von 20 bis 25 mm, insbesondere 23,8 mm, sowie eine Klingen-Dicke D im Bereich von 0,4 bis 2,1 mm aufweisen. Der gehärtete Schneidbereich 4 sowie auch der gehärtete Anlagebereich 6 weisen jeweils eine Höhe h1 von bis zu 1 mm auf. Die Verformungszone 12 weist bevorzugt eine Höhe h2 im Bereich von 8 bis 10 mm, insbesondere 9 mm, auf. Zwischen der Verformungszone 12 und dem Schneidbereich 4 ist ein Klingenbereich 20 mit einer Höhe h3 im Bereich von 8 bis 8,5 mm, insbesondere 8,3 mm, angeordnet. Zwischen der Verformungszone 12 und dem Anlagebereich 6 ist ein Klingenbereich 22 angeordnet, der eine Höhe h4 im Bereich von 1 bis 4,5 mm aufweist. In den genannten Klingenbereichen 20 und 22 weist die Klinge 2 die zuvor definierte Grundhärte von 25 HRC bis 45 HRC auf.The
Es sei bemerkt, dass die genannten Teilbereiche der Klinge 2 natürlich nicht über scharf abgegrenzte, direkte Grenzlinien, sondern vielmehr über kurze Übergangsbereiche stetig ineinander übergehen. Dies ist in den Zeichnungsfiguren anhand von Zickzacklinien angedeutet.It should be noted that the said portions of the
Was noch den Schneidbereich 4 betrifft, so sind zur Bildung der Schneide 4a grundsätzlich beliebige Ausführungsformen möglich. In den dargestellten Ausführungsbeispielen weist der Schneidbereich 4 zur Bildung der Schneide 4a zu einer nicht dargestellten Längsmittelebene der Klinge 2 symmetrische Fasen 24 auf, die gemäß
Gemäß
Wie sich noch aus
Die Erfindung ist nicht auf die dargestellten und beschriebenen Ausführungsbeispiele beschränkt, sondern umfasst auch alle im Sinne der Erfindung gleichwirkenden Ausführungen. Es wird ausdrücklich betont, dass die Ausführungsbeispiele nicht auf alle Merkmale in Kombination beschränkt sind, vielmehr kann jedes einzelne Teilmerkmal auch losgelöst von allen anderen Teilmerkmalen für sich eine erfinderische Bedeutung haben. Ferner ist die Erfindung bislang auch noch nicht auf die im jeweiligen unabhängigen Anspruch definierte Merkmalskombination beschränkt, sondern kann auch durch jede beliebige andere Kombination von bestimmten Merkmalen aller insgesamt offenbarten Einzelmerkmalen definiert sein. Dies bedeutet, dass grundsätzlich praktisch jedes Einzelmerkmal des jeweiligen unabhängigen Anspruchs weggelassen bzw. durch mindestens ein an anderer Stelle der Anmeldung offenbartes Einzelmerkmal ersetzt werden kann. Insofern sind die Ansprüche lediglich als ein erster Formulierungsversuch für eine Erfindung zu verstehen.The invention is not limited to the illustrated and described embodiments, but also includes all the same in the context of the invention embodiments. It is expressly emphasized that the exemplary embodiments are not limited to all the features in combination, but rather each individual partial feature may also have an inventive meaning independently of all other partial features. Furthermore, the invention has hitherto not been limited to the combination of features defined in the respective independent claim, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of the respective independent claim can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claims are to be understood merely as a first formulation attempt for an invention.
Claims (15)
wobei die Verformungszone (12) durch einen Klingenbereich mit einem reduzierten Klingenquerschnitt gebildet ist,
dadurch gekennzeichnet, dass der reduzierte Klingenquerschnitt im Bereich der Verformungszone (12) durch einen Schab-Vorgang gebildet ist.Cutting tool according to claim 1 or according to the preamble of claim 1,
wherein the deformation zone (12) is formed by a blade region having a reduced blade cross-section,
characterized in that the reduced blade cross-section in the region of the deformation zone (12) is formed by a scraping process.
dadurch gekennzeichnet, dass die Verformungszone (12) eine gegenüber der Härte der Klinge (2) um 5 HRC bis 10 HRC reduzierte Härte aufweist, die insbesondere im Bereich von 15 HRC bis 40 HRC liegt.Cutting tool according to claim 1 or 2 or according to the preamble of claim 1,
characterized in that the deformation zone (12) has a relation to the hardness of the blade (2) by 5 HRC to 10 HRC reduced hardness, which is in particular in the range of 15 HRC to 40 HRC.
dadurch gekennzeichnet, dass die Klinge (2) im Bereich der Verformungszone (12) einen reduzierten, insbesondere durch einen Schab-Vorgang gebildeten Klingenquerschnitt aufweist.Cutting tool according to claim 3,
characterized in that the blade (2) in the region of the deformation zone (12) has a reduced, in particular formed by a scraping operation blade cross-section.
dadurch gekennzeichnet, dass der reduzierte Klingenquerschnitt der Verformungszone (12) durch beidseitige, symmetrische Ausnehmungen (14) der Klinge (2) gebildet ist, wobei jede Ausnehmung (14) von winklig, insbesondere rechtwinklig zur Klingenebene angeordneten Flanken (16) begrenzt ist und eine insbesondere konkav gewölbte Grundfläche (18) aufweist.Cutting tool according to one of claims 2 to 4,
characterized in that the reduced blade cross section of the deformation zone (12) is formed by bilateral, symmetrical recesses (14) of the blade (2), wherein each recess (14) of angled, in particular arranged at right angles to the blade plane flanks (16) is limited and a in particular concavely curved base (18).
dadurch gekennzeichnet, dass die Härte des Schneidbereiches (4) und des Anlagebereiches (6) jeweils mindestens 50 HRC beträgt.Cutting tool according to one of claims 1 to 5,
characterized in that the hardness of the cutting area (4) and the contact area (6) is at least 50 HRC each.
dadurch gekennzeichnet, dass die Klinge (2) jeweils angrenzend an den gehärteten Schneidbereich (4) einerseits und den gehärteten Anlagebereich (6) eine Grundhärte im Bereich von 25 HRC bis 45 HRC aufweist.Cutting tool according to one of claims 1 to 6,
characterized in that the blade (2) in each case adjacent to the hardened cutting region (4) on the one hand and the hardened contact region (6) has a basic hardness in the range of 25 HRC to 45 HRC.
dadurch gekennzeichnet, dass die Klinge (2) eine Gesamt-Klingenhöhe (H) im Bereich von 15 bis 100 mm, bevorzugt von 20 bis 25 mm, insbesondere 23,8 mm, sowie eine Klingen-Dicke (D) im Bereich von 0,4 bis 2,1 mm aufweist.Cutting tool according to one of claims 1 to 7,
characterized in that the blade (2) has a total blade height (H) in the range of 15 to 100 mm, preferably 20 to 25 mm, in particular 23.8 mm, and a blade thickness (D) in the range of 0, 4 to 2.1 mm.
dadurch gekennzeichnet, dass der gehärtete Schneidbereich (4) und der gehärtete Anlagebereich (6) jeweils eine Höhe (h1) von bis zu 1 mm aufweisen.Cutting tool according to one of claims 1 to 8,
characterized in that the hardened cutting area (4) and the hardened contact area (6) each have a height (h1) of up to 1 mm.
dadurch gekennzeichnet, dass die Verformungszone (12) eine Höhe (h2) im Bereich von 8 bis 10 mm, insbesondere 9 mm, aufweist.Cutting tool according to one of claims 1 to 9,
characterized in that the deformation zone (12) has a height (h2) in the range of 8 to 10 mm, in particular 9 mm.
dadurch gekennzeichnet, dass zwischen der Verformungszone (12) und dem Schneidbereich (4) ein Klingenbereich (20) mit einer Höhe (h3) im Bereich von 8 bis 8,5 mm, insbesondere 8,3 mm, angeordnet ist.Cutting tool according to one of claims 1 to 10,
characterized in that a blade region (20) with a height (h3) in the range from 8 to 8.5 mm, in particular 8.3 mm, is arranged between the deformation zone (12) and the cutting region (4).
dadurch gekennzeichnet, dass zwischen der Verformungszone (12) und dem Anlagebereich (6) ein Klingenbereich (22) mit einer Höhe (h4) im Bereich von 1 bis 4,5 mm angeordnet ist.Cutting tool according to one of claims 1 to 11,
characterized in that a blade region (22) having a height (h4) in the range from 1 to 4.5 mm is arranged between the deformation zone (12) and the abutment region (6).
dadurch gekennzeichnet, dass der Schneidbereich (4) zur Bildung der Schneide (4a) Fasen (24) aufweist, insbesondere als einfache symmetrische Fasen oder als Facetten mit symmetrischen Doppel-Fasen.Cutting tool according to one of claims 1 to 12,
characterized in that the cutting area (4) for forming the cutting edge (4a) has chamfers (24), in particular as simple symmetrical chamfers or as facets with symmetrical double chamfers.
dadurch gekennzeichnet, dass der Anlagebereich (6) im äußeren Kantenbereich Anfasungen (26) aufweist.Cutting tool according to one of claims 1 to 13,
characterized in that the abutment region (6) has bevels (26) in the outer edge region.
dadurch gekennzeichnet, dass die Verformungszone (12) in einem Bereich der Klinge (2) angeordnet ist, der zum Druckschnitt innerhalb des Aufnahmeschlitzes (8) eines Werkzeugträgers (10), und zwar insbesondere im Bereich einer dort vorhandenen Schlitz-Erweiterung (28) sitzt.Cutting tool according to one of claims 1 to 14,
characterized in that the deformation zone (12) in a region of the blade (2) is arranged, which sits for the pressure cut within the receiving slot (8) of a tool carrier (10), in particular in the region of a slot extension there (28) ,
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210103939 DE102012103939A1 (en) | 2012-05-04 | 2012-05-04 | cutting tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2660021A1 true EP2660021A1 (en) | 2013-11-06 |
EP2660021B1 EP2660021B1 (en) | 2016-04-06 |
Family
ID=48326091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13163331.5A Not-in-force EP2660021B1 (en) | 2012-05-04 | 2013-04-11 | Cutting tool |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2660021B1 (en) |
DE (2) | DE102012103939A1 (en) |
ES (1) | ES2573279T3 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1150147A (en) * | 1912-12-02 | 1915-08-17 | United Shoe Machinery Ab | Cutting-die. |
DE3135980C1 (en) | 1981-09-11 | 1983-06-01 | Karl Marbach Gmbh & Co, 7100 Heilbronn | Strip steel punching tool with at least one strip-shaped punching blade having a cutting edge |
DE19931216C1 (en) | 1999-07-06 | 2000-11-16 | Rolf Karl Stursberg | Strip stamping blade for stamping cardboard for packaging cartons is of strip steel held within a laser-cut slit in the blade carrier with a thinner zone where the slit expands |
DE202010016582U1 (en) * | 2010-12-14 | 2012-03-15 | Tr-Packaging System | cutting line |
-
2012
- 2012-05-04 DE DE201210103939 patent/DE102012103939A1/en not_active Withdrawn
-
2013
- 2013-04-11 ES ES13163331.5T patent/ES2573279T3/en active Active
- 2013-04-11 EP EP13163331.5A patent/EP2660021B1/en not_active Not-in-force
- 2013-04-12 DE DE201320101567 patent/DE202013101567U1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1150147A (en) * | 1912-12-02 | 1915-08-17 | United Shoe Machinery Ab | Cutting-die. |
DE3135980C1 (en) | 1981-09-11 | 1983-06-01 | Karl Marbach Gmbh & Co, 7100 Heilbronn | Strip steel punching tool with at least one strip-shaped punching blade having a cutting edge |
DE19931216C1 (en) | 1999-07-06 | 2000-11-16 | Rolf Karl Stursberg | Strip stamping blade for stamping cardboard for packaging cartons is of strip steel held within a laser-cut slit in the blade carrier with a thinner zone where the slit expands |
DE202010016582U1 (en) * | 2010-12-14 | 2012-03-15 | Tr-Packaging System | cutting line |
Also Published As
Publication number | Publication date |
---|---|
EP2660021B1 (en) | 2016-04-06 |
DE102012103939A1 (en) | 2013-11-07 |
DE202013101567U1 (en) | 2013-04-23 |
ES2573279T9 (en) | 2016-07-04 |
ES2573279T3 (en) | 2016-06-07 |
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