EP2660021B1 - Cutting tool - Google Patents
Cutting tool Download PDFInfo
- Publication number
- EP2660021B1 EP2660021B1 EP13163331.5A EP13163331A EP2660021B1 EP 2660021 B1 EP2660021 B1 EP 2660021B1 EP 13163331 A EP13163331 A EP 13163331A EP 2660021 B1 EP2660021 B1 EP 2660021B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- area
- cutting
- 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.)
- Not-in-force
Links
- 238000005520 cutting process Methods 0.000 title claims description 71
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 7
- 238000004080 punching Methods 0.000 description 6
- 239000011111 cardboard Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241001674044 Blattodea Species 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005112 continuous flow technique Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
-
- 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 a hardened cutting area with a cutting edge and at the other longitudinal edge a contact 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 during 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.
- HRC Rockwell hardness according to scale C.
- 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 contact back in the range of at least 50 HRC to for example, a maximum of 70 HRC, but the concrete hardness values of the cutting area on the one hand and the contact area on the other hand may differ if they are each at least 50 HRC. This means that between 50 HRC and 70 HRC, for example, differences of up to 20 HRC are possible ,
- 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 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, as in a rotary turning process.
- 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.
- the blade - apart from the hardened cutting area and possibly the hardened contact area as well as 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 preferably reduced by 5 to 10 HRC, is 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 the hardness of the contact area 6 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 reduced hardness of the deformation zone 12 results in a value which is in the range of 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 curved 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 28 existing there
- the Anückücken 6a is based on a receiving slot 8 back covering steel plate 30 from.
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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)
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.
Erfindungsgemäß 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 von mindestens 50 HRC (HRC = Rockwell-Härte gemäß Skala C) 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.According to 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 of the cutting region corresponding hardness of at least 50 HRC (HRC = Rockwell hardness according to scale C). 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.
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 understood to mean that the hardness both in the region of the cutting edge and in the region of the contact back in the range of at least 50 HRC to for example, a maximum of 70 HRC, but the concrete hardness values of the cutting area on the one hand and the contact area on the other hand may differ if they are each at least 50 HRC.This means that between 50 HRC and 70 HRC, for example, differences of up to 20 HRC are possible ,
In einer bevorzugten Ausführung der Erfindung, bei der die Verformungszone durch einen Klingenbereich mit einem reduzierten Klingenquerschnitt gebildet ist, ist 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.In a preferred embodiment of the invention, in which the deformation zone is formed by a blade region with a reduced blade cross-section, it is provided that the reduced blade cross-section in the region of the deformation zone 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, as in a rotary turning process. 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, bevorzugten Ausführungsform 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 preferred embodiment explained last, it can also be provided to form the deformation zone by a blade area with a hardness reduced by 5 HRC to 10 HRC compared to 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 bevorzugten Maßnahmen zu kombinieren, d. h. die Verformungszone durch Querschnittsreduzierung und mit reduzierter Härte zu bilden.But it is also within the scope of the invention to combine both preferred 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 vorzugsweise um 5 bis 10 HRC reduzierte Härte der Verformungszone im Bereich von 15 HRC bis 40 HRC.In an expedient embodiment, it is further provided that the blade - apart from the hardened cutting area and possibly the hardened contact area as well as 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 preferably reduced by 5 to 10 HRC, is 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.
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
Erfindungsgemäß 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.According to 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 eine vorzugsweise 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
Claims (14)
- Cutting tool (1) for pressure cutting, in particular in the paper and packaging industry, comprising a strip-like blade (2) made of steel which has a hardened cutting area (4) with a cutter (4a) on one longitudinal edge and, on the other longitudinal edge, has a support area (6) having a support spine (6a) for supporting the blade (2) in a holding slot (8) of a tool carrier (10), the blade (2) having, between the cutting area (4) and the support area (6), a strip-like deformation zone (12) running in the blade longitudinal direction in such a way that, during pressure cutting, the blade (2) can be compression-deformed in the blade transverse direction by the application of a compressive force (F), with a change in its blade height (H), characterized in that the support area (6) is hardened and has a hardness that corresponds to the hardness of the cutting area (4), that is to say - like the cutting area (4) - a hardness of at least 50 HRC.
- Cutting tool according to Claim 1,
the deformation zone (12) being formed by a blade area with a reduced blade cross section,
characterized in that the reduced blade cross section in the area of the deformation zone (12) is formed by a scraping operation. - Cutting tool according to Claim 1 or 2,
characterized in that the deformation zone (12) has a hardness which is reduced by 5 HRC to 10 HRC as compared with the hardness of the blade (2) and which in particular lies in the range from 15 HRC to 40 HRC. - Cutting tool according to Claim 3,
characterized in that the blade (2) in the region of the deformation zone (12) has a reduced blade cross section, in particular formed by a scraping operation. - 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 symmetrical recesses (14) on both sides of the blade (2), each recess (14) being bounded by angled flanks (16), in particular arranged at right angles to the plane of the blade, and an in particular concavely curved base surface (18). - Cutting tool according to one of Claims 1 to 5,
characterized in that the blade (2) has a basic hardness in the range from 25 HRC to 45 HRC in each case adjoining the hardened cutting area (4) on one side and the hardened support area (6). - Cutting tool according to one of Claims 1 to 6,
characterized in that the blade (2) has an overall blade height (H) in the range from 15 to 100 mm, preferably from 20 to 25 mm, in particular 23.8 mm, and a blade thickness (D) in the range from 0.4 to 2.1 mm. - Cutting tool according to one of Claims 1 to 7,
characterized in that the hardened cutting area (4) and the hardened support area (6) each have a height (h1) of up to 1 mm. - Cutting tool according to one of Claims 1 to 8,
characterized in that the deformation zone (12) has a height (h2) in the range from 8 to 10 mm, in particular 9 mm. - Cutting tool according to one of Claims 1 to 9,
characterized in that between the deformation zone (12) and the cutting area (4) there is arranged a blade area (20) with a height (h3) in the range from 8 to 8.5 mm, in particular 8.3 mm. - Cutting tool according to one of Claims 1 to 10,
characterized in that between the deformation zone (12) and the support area (6) there is arranged a blade area (22) with a height (h4) in the range from 1 to 4.5 mm. - Cutting tool according to one of Claims 1 to 11,
characterized in that the cutting area (4) for forming the cutter (4a) has chamfers (24), in particular as simple symmetric chamfers or as facets with symmetric double chamfers. - Cutting tool according to one of Claims 1 to 12,
characterized in that the support area (6) has bevels (26) in the outer edge area. - Cutting tool according to one of Claims 1 to 13,
characterized in that the deformation zone (12) is arranged in an area of the blade (2) which, for the pressure cutting, is seated within the holding slot (8) of a tool carrier (10), specifically in particular in the area of a slot widening (28) that is present there.
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 EP2660021A1 (en) | 2013-11-06 |
| EP2660021B1 true 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) |
Family Cites Families (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 | Steel band punching tool with at least one band-shaped punching knife 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
Also Published As
| Publication number | Publication date |
|---|---|
| EP2660021A1 (en) | 2013-11-06 |
| ES2573279T9 (en) | 2016-07-04 |
| ES2573279T3 (en) | 2016-06-07 |
| DE102012103939A1 (en) | 2013-11-07 |
| DE202013101567U1 (en) | 2013-04-23 |
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