EP0310693A1 - Method for making cutting blades - Google Patents

Method for making cutting blades Download PDF

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Publication number
EP0310693A1
EP0310693A1 EP87114627A EP87114627A EP0310693A1 EP 0310693 A1 EP0310693 A1 EP 0310693A1 EP 87114627 A EP87114627 A EP 87114627A EP 87114627 A EP87114627 A EP 87114627A EP 0310693 A1 EP0310693 A1 EP 0310693A1
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EP
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Prior art keywords
cutting
pressing
knives
turning
cutting edge
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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.)
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EP87114627A
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German (de)
French (fr)
Inventor
Heiner Barke
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Barke-Maschinenmesser GmbH
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Barke-Maschinenmesser GmbH
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Publication of EP0310693A1 publication Critical patent/EP0310693A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G17/00—Manually-operated tools
    • B27G17/02—Hand planes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/60—Making other particular articles cutlery wares; garden tools or the like
    • B21D53/64—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades

Definitions

  • the invention relates to a method for producing reversible knives, in particular for use in hand planers and / or planing machines, in which an endless strip steel is hardened and, after hardening, a cutting edge is ground on at least one of its two longitudinal sides before the individual reversible knives are cut to length.
  • the object of the invention is therefore to provide a method for producing reversible knives of the type mentioned by which the rounded corners of the reversible knives are easier to manufacture and thus the manufacture of the reversible knife is considerably cheaper.
  • the V-shaped embossments run in an arc. So that the corners of the turning knife are already round, so that a corresponding reworking of the corners is no longer necessary.
  • the cutting edges of the turning knives are provided by one or more pressing and / or Squeezing in a crowning area spaced from the cutting edges is a slightly convex Get shape. So far, the curves were made by hand or by means of a grinding machine, with each knife having to be inserted and sharpened individually, which is very complex and causes high costs for a mass-produced article, of which hundreds of thousands are manufactured.
  • the manufacturing process according to the invention can be integrated into the general manufacturing process without great effort, the pressing and / or squeezing process being able to be carried out, for example, together with punching processes with which, for example, the holes for the locating pins are punched into the turning knives.
  • the convex design of a cutting edge of a reversible knife can in principle also be applied by means of a straightening machine.
  • this has the disadvantage that, in the case of double-sided reversible knives, the other cutting edge is then not convex but rather concave.
  • the manufacturing method according to the invention can be carried out particularly simply in such a way that the pressing and / or squeezing processes take place by means of one or more punches.
  • the curvature of the cutting edges is determined by the shape and the pressing force of the punches.
  • the shape of the corner areas is also influenced by the crowning process.
  • the slightly convex shape of the cutting edges can be achieved in a further development of this inventive idea by the fact that the crowning areas do not reach the cutting lines.
  • the pressing and / or squeezing process takes place only in the middle part of the turning knife. This somewhat "softer" area is only a few millimeters away from the fully hardened cutting edge.
  • the crowning process can be carried out according to the invention both on the front and on the back of the turning knives.
  • V-shaped embossments 7, 8, 9, 10 are made at regular intervals in the region of the cutting lines 5, which diverge outwards.
  • V-shaped embossing areas 7, 8 and 9, 10 are somewhat rounded towards the respective turning knives 2, 3, 4, so that they continuously merge into the longitudinal sides 11, 12 of the steel strip 1.
  • the turning knives are then hardened, and a method known from DE 33 00 106 A1 can be used to produce such steel band knives. According to this method, only the narrow edge area of the actual cutting edges is fully hardened using high frequency. The intermediate middle part 15 is only slightly hardened. The edge regions indicated by dashed lines in FIG. 1 are somewhat wider than the later cutting edges 13 and 14.
  • the cutting edges 13 and 14 are ground on either only one or on both longitudinal sides 11, 12 of the steel strip 1.
  • the protruding V-shaped embossed areas 7, 8 and 9, 10 are completely ground away, so that a corresponding recess is created.
  • the individual turning knives 2, 3, 4 are cut to length from the endless strip steel 1.
  • the turning knives that are almost finished are now provided in the unhardened middle part 9 with fitting holes 16 and 17, 18 and 19. Instead of the round fitting holes shown in the figures, any other fitting openings can also be used.
  • a crowning process provided according to the invention can be carried out, through which the cutting edges 13, 14 acquire a slightly convex shape.
  • the turning knives 2, 3, 4, which adjoin the narrow edge areas of the cutting edges 13 and 14, are carried out pressing and / or squeezing operations by means of a stamp (not shown).
  • the cutting edges 13, 14 of the reversible knives are shaped slightly convex (belly-shaped).
  • the degree of deformation depends on the shape, the pressing force and the point or points of attack of the stamp or stamps.
  • the crowning regions 20 and 21 shown in the drawing can be completely different both in terms of their shape and their extent. However, they should not extend to the cutting lines 5, 6.
  • stamps which are preferably hard metal stamps
  • inventive method can also be used to produce reversible knives that have a slightly convex cutting edge on only one side, since the inventive method is only used in the area of one cutting edge in these reversible knives.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Shearing Machines (AREA)

Abstract

The method described is intended for making reversible cutting blades, especially for use in hand-held planes and/or planing machines. In the method, an endless steel strip is hardened and, after hardening, has a cutting edge ground on at least one of its two longitudinal sides before the individual reversible cutting blades are cut to length. In order to make the production of the rounded corners of the reversible cutting blades simpler, a method is proposed which is characterised by the following method steps in the following sequence: a) formation of V-shaped stampings (7,8,9,10) by means of a pressing and/or squeezing operation on the subsequent cut-off line (5,6) in the region of the cutting edge(s) (13,14), b) hardening of the endless strip steel (1), possibly only in the edge region envisaged for the later cutting edge(s) (13,14), c) grinding of the cutting edge(s) (13,14) onto the endless strip steel (1) and d) cutting to length of the individual reversible cutting blades (2,3,4) from the endless strip steel (1) at the cut-off lines (5,6). <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Wende­messern, insbesondere zur Verwendung in Handhobelgeräten und/oder Hobelmaschinen, bei dem ein endloser Bandstahl gehär­tet wird und nach dem Härten an mindestens einer seiner beiden Längsseiten eine Schneidkante angeschliffen erhält, bevor die einzelnen Wendemesser abgelängt werden.The invention relates to a method for producing reversible knives, in particular for use in hand planers and / or planing machines, in which an endless strip steel is hardened and, after hardening, a cutting edge is ground on at least one of its two longitudinal sides before the individual reversible knives are cut to length.

Insbesondere für Handhobelgeräte hat es sich als sinnvoll er­wiesen, die Ecken der Wendemesser abzurunden, um zu verhin­dern, daß bei einem Schiefansetzen des Hobels Rillen gehobelt werden. Diese Abrundungen der Ecken der Wendemesser werden üblicherweise durch Schleifen per Hand angebracht.For hand planers in particular, it has proven to be useful to round off the corners of the turning knives in order to prevent grooves being planed when the planer is slanted. This rounding of the corners of the turning knife is usually done by hand grinding.

Aufgabe der Erfindung ist es daher, ein Verfahren zum Her­stellen von Wendemessern der eingangs genannten Art zu schaffen, durch das die Abrundungen der Ecken der Wendemesser einfacher herstellbar sind und damit die Herstellung des Wendemessers erheblich verbilligt wird.The object of the invention is therefore to provide a method for producing reversible knives of the type mentioned by which the rounded corners of the reversible knives are easier to manufacture and thus the manufacture of the reversible knife is considerably cheaper.

Diese Aufgabe wird erfindungsgemäß durch die nachfolgenden Verfahrensschritte in dieser Reihenfolge gelöst:

  • a) Anbringen von V-förmigen Prägungen mittels eines Preß- ­und/oder Quetschvorganges auf der späteren Ablänglinie im Bereich der Schneidekante(n),
  • b) Härten des endlosen Bandstahls, eventuell nur in dem für die spätere(n) Schneidkante(n) vorgesehenen Randbereich,
  • c) Anschleifen der Schneidkante(n) in diesem Randbereich des Bandstahls,
  • d) Ablängen der einzelnen Wendemesser von dem endlosen Bandstahl an den Ablänglinien.
According to the invention, this object is achieved by the following process steps in this order:
  • a) applying V-shaped embossments by means of a pressing and / or squeezing process on the later cutting line in the area of the cutting edge (s),
  • b) hardening of the endless strip steel, possibly only in the edge area provided for the later cutting edge (s),
  • c) grinding the cutting edge (s) in this edge area of the steel strip,
  • d) Cutting the individual turning knives from the endless strip steel on the cutting lines.

Durch die sich V-förmig verbreiternde Prägung im Bereich der Schneidkanten entsteht im Randbereich der Ablänglinie eine Ausprägung, die bei dem anschließenden Anschleifen der Schneidkanten vollständig weggenommen wird. Damit sind die späteren Ecken der Wendemesser bereits abgeschrägt. Die Messer brauchen dann nur noch von dem endlosen Bandstahl an den Ablänglinien abgelängt zu werden. Ein nachträgliches Abschlei­fen der Ecken per Hand entfällt.Due to the V-shaped broadening of the embossing in the area of the cutting edges, a shape is created in the edge area of the cutting line, which is completely removed when the cutting edges are subsequently ground. The later corners of the reversible knives are already beveled. The knives then only need to be cut to length from the endless strip steel on the cutting lines. Subsequent sanding of the corners by hand is not necessary.

Gemäß einer Ausgestaltung der Erfindung verlaufen die V-för­migen Prägungen bogenförmig. Damit sind die Ecken der Wende­messer bereits rund ausgebildet, so daß auch eine entsprechen­de Nachbearbeitung der Ecken nicht mehr erforderlich ist.According to one embodiment of the invention, the V-shaped embossments run in an arc. So that the corners of the turning knife are already round, so that a corresponding reworking of the corners is no longer necessary.

Um die Schneidkanten der Wendemesser leicht konvex auszubil­den, was insbesondere bei Handhobelgeräten insofern von Vor­teil ist, daß auch bei einem nur ganz leichten Schiefansetzen des Hobels Rillen gehobelt werden, ist erfindungsgemäß vorge­sehen, daß die Schneidkanten der Wendemesser durch einen oder mehrere Press- und/oder Quetschvorgänge in einem von den Schneidkanten beabstandeten Bombierbereich eine leicht konvexe Form erhalten. Bisher wurden die Rundungen per Hand oder mittels einer Schleifmaschine angebracht, wobei jedes Messer einzeln eingelegt und geschliffen werden mußte, was bei einem Massenartikel, von dem Hunderttausende hergestellt werden, sehr aufwendig ist und hohe Kosten verursacht. Der erfindungs­gemäße Herstellungsvorgang kann demgegenüber ohne großen Aufwand in dem allgemeinen Herstellungsprozeß integriert werden, wobei der Press- und/oder Quetschvorgang beispiels­weise zusammen mit Stanzvorgängen durchgeführt werden kann, mit dem z.B. die Löcher für die Aufnahmestifte in die Wende­messer eingestanzt werden. Hierzu sei angemerkt, daß die konvexe Ausbildung einer Schneide eines Wendemessers sich grundsätzlich auch mittels einer Richtmaschine anbringen läßt. Dies hat aber den Nachteil, daß bei zweiseitigen Wendemessern die andere Schneide dann nicht konvex, sondern konkav ausge­bildet ist.In order to make the cutting edges of the turning knives slightly convex, which is particularly advantageous in the case of hand planers in that grooves are planed even when the planer is only slightly inclined, the cutting edges of the turning knives are provided by one or more pressing and / or Squeezing in a crowning area spaced from the cutting edges is a slightly convex Get shape. So far, the curves were made by hand or by means of a grinding machine, with each knife having to be inserted and sharpened individually, which is very complex and causes high costs for a mass-produced article, of which hundreds of thousands are manufactured. In contrast, the manufacturing process according to the invention can be integrated into the general manufacturing process without great effort, the pressing and / or squeezing process being able to be carried out, for example, together with punching processes with which, for example, the holes for the locating pins are punched into the turning knives. In this regard, it should be noted that the convex design of a cutting edge of a reversible knife can in principle also be applied by means of a straightening machine. However, this has the disadvantage that, in the case of double-sided reversible knives, the other cutting edge is then not convex but rather concave.

Das erfindungsgemäße Herstellungsverfahren läßt sich gemäß einer weiteren Ausgestaltung der Erfindung besonders einfach in der Weise durchführen, daß die Press- und/oder Quetschvor­gänge mittels eines oder mehrerer Stempel erfolgen. Die Krümmung der Schneiden wird dabei erfindungsgemäß von der Form und der Andrückkraft der Stempel bestimmt. Je nachdem, wie weit die Press- und/oder Quetschvorgänge an die Ablänglinien heranreichen, wird auch die Form der Eckbereiche durch den Bombiervorgang beeinflußt.According to a further embodiment of the invention, the manufacturing method according to the invention can be carried out particularly simply in such a way that the pressing and / or squeezing processes take place by means of one or more punches. According to the invention, the curvature of the cutting edges is determined by the shape and the pressing force of the punches. Depending on how far the pressing and / or squeezing processes reach the cutting lines, the shape of the corner areas is also influenced by the crowning process.

Die leicht konvexe Form der Schneiden läßt sich in Weiterbil­dung dieses Erfindungsgedankens sicher dadurch erreichen, daß die Bombierbereiche nicht bis an die Ablänglinien heranrei­chen.The slightly convex shape of the cutting edges can be achieved in a further development of this inventive idea by the fact that the crowning areas do not reach the cutting lines.

Bei Wendemessern, bei denen nur der Schneidbereich voll durch­gehärtet und der Mittelteil nur gering gehärtet ist (DE 33 00 106 A1) erfolgt gemäß einer weiteren Ausführungsform der Press- und/oder Quetschvorgang nur im Mittelteil der Wendemesser. Dieser etwas "weichere" Bereich ist nur einige Millimeter von der voll gehärteten Schneide entfernt.For reversible knives where only the cutting area is fully hardened and the middle section is only slightly hardened (DE 33 00 106 A1), according to a further embodiment, the pressing and / or squeezing process takes place only in the middle part of the turning knife. This somewhat "softer" area is only a few millimeters away from the fully hardened cutting edge.

Bei Wendemessern, die vollständig durchgehärtet sind, werden gleichzeitig mit dem Anbringen der V-förmigen Prägungen die Ablänglinien eingekerbt. Damit wird der spätere Ablängvorgang, der mit herkömmlichen Schneid-, Abbrech- oder Stanzeinrich­tungen erfolgt, wesentlich erleichtert.In the case of reversible knives that are fully hardened, the cutting lines are notched at the same time as the V-shaped embossing is applied. The subsequent cutting process, which is carried out with conventional cutting, breaking or punching devices, is thus made considerably easier.

Um bei einem Press- und/oder Quetschvorgang eine Verformung der Wendemesser zu verhindern, kann der Bombiervorgang er­findungsgemäß sowohl auf der Vorder- als auch auf der Rück­seite der Wendemesser ausgeübt werden.In order to prevent deformation of the turning knives during a pressing and / or squeezing process, the crowning process can be carried out according to the invention both on the front and on the back of the turning knives.

Die Erfindung wird nachfolgend anhand eines Ausführungsbei­spiels näher erläutert, das in der Zeichnung dargestellt ist.The invention is explained in more detail below using an exemplary embodiment which is shown in the drawing.

Es zeigen:

  • Fig. 1 in schematischer Darstellung eine Draufsicht auf drei noch nicht abgelängte Bandstahlmesser und
  • Fig. 2 eine Draufsicht gemäß Fig. 1 auf ein einziges ferti­ges Wendemesser, bei dem nur die Schneiden mittels Hochfrequenz vollständig durchgehärtet sind.
Show it:
  • Fig. 1 shows a schematic representation of a plan view of three band steel knives not yet cut to length
  • Fig. 2 is a plan view of FIG. 1 on a single finished turning knife, in which only the cutting edges are fully hardened by means of high frequency.

In einen endlosen Bandstahl 1, aus dem Wendemesser 2, 3, 4 hergestellt werden, werden in regelmäßigen Abständen im Be­reich der Ablänglinien 5, 6 V-förmige Prägungen 7, 8, 9, 10 angebracht, die nach außen auseinanderlaufen.In an endless strip steel 1, from which turning knives 2, 3, 4 are produced, V-shaped embossments 7, 8, 9, 10 are made at regular intervals in the region of the cutting lines 5, which diverge outwards.

Die V-förmigen Prägebereiche 7, 8 und 9, 10 sind zu den je­weiligen Wendemessern 2, 3, 4 hin etwas abgerundet, so daß sie kontinuierlich in die Längsseiten 11, 12 des Bandstahls 1 übergehen.The V-shaped embossing areas 7, 8 and 9, 10 are somewhat rounded towards the respective turning knives 2, 3, 4, so that they continuously merge into the longitudinal sides 11, 12 of the steel strip 1.

Danach werden die Wendemesser gehärtet, wobei ein aus der DE 33 00 106 A1 bekanntes Verfahren zur Herstellung derartiger Bandstahlmesser Verwendung finden kann. Nach diesem Verfahren wird nur der schmale Randbereich der eigentlichen Schneiden mittels Hochfrequenz voll durchgehärtet. Der dazwischenliegen­de Mittelteil 15 wird nur geringfügig gehärtet. Die in Fig. 1 gestrichelt angedeuteten Randbereiche sind etwas breiter als die späteren Schneidkanten 13 und 14.The turning knives are then hardened, and a method known from DE 33 00 106 A1 can be used to produce such steel band knives. According to this method, only the narrow edge area of the actual cutting edges is fully hardened using high frequency. The intermediate middle part 15 is only slightly hardened. The edge regions indicated by dashed lines in FIG. 1 are somewhat wider than the later cutting edges 13 and 14.

Nach dem Härten werden an entweder nur einer oder an beiden Längsseiten 11, 12 des Bandstahls 1 die Schneidkanten 13 und 14 angeschliffen. Dabei werden die vorstehenden V-förmigen Prägebereiche 7, 8 und 9, 10 vollständig weggeschliffen, so daß eine entsprechende Aussparung entsteht. Danach werden die einzelnen Wendemesser 2, 3, 4 von dem endlosen Bandstahl 1 abgelängt. Die damit fast fertigen Wendemesser werden nun im ungehärteten Mittelteil 9 mit Paßlöchern 16 und 17, 18 und 19 versehen. Anstelle der in den Figuren gezeigten runden Paß­löcher können aber auch beliebige andere Paßöffnungen ver­wendet werden.After hardening, the cutting edges 13 and 14 are ground on either only one or on both longitudinal sides 11, 12 of the steel strip 1. The protruding V-shaped embossed areas 7, 8 and 9, 10 are completely ground away, so that a corresponding recess is created. Then the individual turning knives 2, 3, 4 are cut to length from the endless strip steel 1. The turning knives that are almost finished are now provided in the unhardened middle part 9 with fitting holes 16 and 17, 18 and 19. Instead of the round fitting holes shown in the figures, any other fitting openings can also be used.

Bereits während des Stanzvorganges, mit dem die Paßlöcher 16 und 17, 18 und 19 für die Aufnahmestifte der Handhobelgeräte oder Hobelmaschinen angebracht werden, kann ein erfindungsge­mäß vorgesehener Bombiervorgang durchgeführt werden, durch den die Schneiden 13, 14 eine leicht konvexe Form erhalten. Dabei werden in Bereichen 20, 21 der Wendemesser 2, 3, 4, die an die schmalen Randbereiche der Schneidkanten 13 und 14 angrenzen, mittels nicht dargestellter Stempel Press- und/oder Quetsch­vorgänge durchgeführt. Dadurch werden die Schneidkanten 13, 14 der Wendemesser leicht konvex (bauchförmig) geformt. Der Verformungsgrad hängt von der Form, der Andrückkraft und dem oder den Angriffspunkten des oder der Stempel ab. Die in der Zeichnung dargestellten Bombierbereiche 20 und 21 können sowohl von ihrer Form als auch ihrer Ausdehnung völlig unter­schiedlich sein. Sie sollten aber nicht bis zu den Abläng­linien 5, 6 reichen.Already during the punching process, with which the fitting holes 16 and 17, 18 and 19 are made for the locating pins of the hand planers or planing machines, a crowning process provided according to the invention can be carried out, through which the cutting edges 13, 14 acquire a slightly convex shape. The turning knives 2, 3, 4, which adjoin the narrow edge areas of the cutting edges 13 and 14, are carried out pressing and / or squeezing operations by means of a stamp (not shown). As a result, the cutting edges 13, 14 of the reversible knives are shaped slightly convex (belly-shaped). The degree of deformation depends on the shape, the pressing force and the point or points of attack of the stamp or stamps. The crowning regions 20 and 21 shown in the drawing can be completely different both in terms of their shape and their extent. However, they should not extend to the cutting lines 5, 6.

Je nachdem, welche Krümmung die Wendemesser haben sollen, werden größere oder kleinere Stempel, bei denen es sich vor­zugweise um Hartmetallstempel handelt, unterschiedlicher Anzahl verwendet. Selbstverständlich lassen sich mit dem erfindungsgemäßen Verfahren aber auch Wendemesser herstellen, die nur einseitig eine leicht konvex geformte Schneide auf­weisen, indem nämlich bei diesen Wendemessern nur im Bereich einer Schneide das erfindungsgemäße Verfahren zur Anwendung kommt.Depending on the curvature of the turning knife, larger or smaller stamps, which are preferably hard metal stamps, are used in different numbers. Of course, the inventive method can also be used to produce reversible knives that have a slightly convex cutting edge on only one side, since the inventive method is only used in the area of one cutting edge in these reversible knives.

Sollte ein Verfahren zum Herstellen von Wendemessern angewen­det werden, bei dem der Bandstahl vollständig durchgehärtet wird, hat es sich als vorteilhaft erwiesen, gleichzeitig mit dem Anbringen der V-förmigen Prägungen 7, 8 und 9, 10 sowohl die Ablänglinien 5, 6 vorzukerben, damit die voll durchgehär­teten Wendemesser 2, 3, 4 später einfacher abgelängt werden können, als auch die Paßlöcher 16, 17, 18, 19 auszustanzen. Das Anbringen der V-förmigen Prägungen und der Kerben kann in einem einzigen Press- und/oder Quetschvorgang erfolgen.If a method for the production of turning knives is used, in which the steel strip is fully hardened, it has proven to be advantageous to pre-notch both the cutting lines 5, 6 with the application of the V-shaped embossments 7, 8 and 9, 10 the fully hardened turning knives 2, 3, 4 can be cut to length later, as well as punching the fitting holes 16, 17, 18, 19. The V-shaped embossing and the notches can be applied in a single pressing and / or squeezing process.

Claims (9)

1. Verfahren zum Herstellen von Wendemessern, insbesondere zur Verwendung in Handhobelgeräten und/oder Hobelmaschinen, bei dem ein endloser Bandstahl gehärtet wird und nach dem Härten an mindestens einer seiner beiden Längsseiten eine Schneidkante angeschliffen erhält, bevor die einzelnen Wende­messer abgelängt werden, gekennzeichnet durch folgende Ver­fahrensschritte in dieser Reihenfolge: a) Anbringen von V-förmigen Prägungen (7, 8, 9, 10) mittels eines Preß- und/oder Quetschvorganges auf der späteren Ablänglinie (5, 6) im Bereich der Schneidkante(n) (13, 14), b) Härten des endlosen Bandstahles (1), eventuell nur in dem für die spätere(n) Schneidkante(n) (13, 14) vorgesehenen Randbereich, c) Anschleifen der Schneidkante(n) (13, 14) an den endlosen Bandstahl (1), d) Ablängen der einzelnen Wendemesser (2, 3, 4) von dem endlosen Bandstahl (1) an den Ablänglinien (5, 6). 1. A method for producing turning knives, in particular for use in hand planers and / or planing machines, in which an endless strip steel is hardened and, after hardening, a cutting edge is ground on at least one of its two longitudinal sides before the individual turning knives are cut to length, characterized by the following Process steps in this order: a) applying V-shaped embossments (7, 8, 9, 10) by means of a pressing and / or squeezing process on the later cutting line (5, 6) in the region of the cutting edge (s) (13, 14), b) hardening of the endless steel strip (1), possibly only in the edge area provided for the later cutting edge (s) (13, 14), c) grinding the cutting edge (s) (13, 14) to the endless strip steel (1), d) cutting the individual turning knives (2, 3, 4) from the endless strip steel (1) to the cutting lines (5, 6). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die V-förmigen Prägungen (7, 8, 9, 10) bogenförmig verlaufen.2. The method according to claim 1, characterized in that the V-shaped embossments (7, 8, 9, 10) extend in an arc. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schneidkanten (13, 14) der Wendemesser (2, 3, 4) durch einen oder mehrere Preß- und/oder Quetschvorgänge in einem von den Schneidkanten (13, 14) beabstandeten Bombierbereich (20, 21) eine leicht konvexe Form erhalten.3. The method according to claim 1 or 2, characterized in that the cutting edges (13, 14) of the turning knife (2, 3, 4) by one or more pressing and / or crushing operations in one of the cutting edges (13, 14) spaced Bombierbereich (20, 21) get a slightly convex shape. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch ge­kennzeichnet, daß die Press- und/oder Quetschvorgänge mittels eines oder mehrerer Stempel erfolgen.4. The method according to any one of claims 1 to 3, characterized in that the pressing and / or squeezing operations take place by means of one or more stamps. 5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Krümmung der Schneidkanten (13, 14) von der Form und der Andrückkraft der Stempel bestimmt wird.5. The method according to claim 4, characterized in that the curvature of the cutting edges (13, 14) is determined by the shape and the pressing force of the stamp. 6. Verfahren nach einem der Ansprüche 3 bis 5, dadurch ge­kennzeichnet, daß die Bombierbereiche (20, 21) nicht bis an die Ablänglinien (5, 6) heranreichen.6. The method according to any one of claims 3 to 5, characterized in that the crowning areas (20, 21) do not reach up to the cutting lines (5, 6). 7. Verfahren nach einem der Ansprüche 3 bis 6, wobei nur der Schneidenbereich der Wendemesser voll gehärtet und der da­zwischenliegende Teil nur gering gehärtet ist, dadurch gekenn­zeichnet, daß der Press- und/oder Quetschvorgang nur in dem gering gehärteten Mittelteil (15) der Wendemesser erfolgt.7. The method according to any one of claims 3 to 6, wherein only the cutting area of the turning knife is fully hardened and the intermediate part is only slightly hardened, characterized in that the pressing and / or crushing process only in the slightly hardened middle part (15) of the turning knife he follows. 8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch ge­kennzeichnet, daß bei Wendemessern, die vollständig durchge­härtet werden, gleichzeitig mit dem Anbringen der V-förmigen Prägungen (7, 8, 9, 10) die Ablänglinien (5, 6) eingekerbt werden.8. The method according to any one of claims 1 to 7, characterized in that in the case of reversible knives which are fully hardened, the cutting lines (5, 6) are notched simultaneously with the application of the V-shaped embossments (7, 8, 9, 10) . 9. Verfahren nach einem der Ansprüche 3 bis 8, dadurch ge­kennzeichnet, daß die Bombierung mittels Press- und/oder Quetschvorgängen auf der Vorder- und Rückseite der Wendemesser (2, 3, 4) erfolgt.9. The method according to any one of claims 3 to 8, characterized in that the crowning is carried out by pressing and / or squeezing operations on the front and back of the turning knife (2, 3, 4).
EP87114627A 1986-06-24 1987-10-07 Method for making cutting blades Withdrawn EP0310693A1 (en)

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DE19863620807 DE3620807A1 (en) 1986-06-24 1986-06-24 METHOD FOR PRODUCING REVERSIBLE KNIVES

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406560B (en) * 1997-04-24 2000-06-26 Payer Lux Elektroprod Method of producing blade blocks or foil cutting heads for shavers
EP1479784B1 (en) * 2003-05-21 2008-12-31 Thyssenkrupp Automotive AG Method for producing a formed component
CN103386433A (en) * 2012-05-11 2013-11-13 陆学中 Paper shredding blade punching forming machining method
CN111349760A (en) * 2020-04-30 2020-06-30 重庆派斯克刀具制造股份有限公司 Quick-change planer tool heat treatment processing technique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620807A1 (en) * 1986-06-24 1988-02-04 Barke Maschinenmesser Gmbh METHOD FOR PRODUCING REVERSIBLE KNIVES

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258142A (en) * 1926-01-08 1926-09-16 Roland Davy Improvements in or relating to the manufacture of safety razor and similar blades
DE581776C (en) * 1933-08-02 Tonsor Ab Process for making the cutting edges of thin razor blades
DE649557C (en) * 1937-08-27 Franz Rodeck Wooden planes with replaceable, straight-edged, flat, flexible knife blades
US2365581A (en) * 1943-12-16 1944-12-19 Gillette Safety Razor Co Safety razor blade and process of manufacturing the same
DE3300105A1 (en) * 1983-01-04 1984-07-12 Barke GmbH, 6384 Schmitten Method of producing slitting or parting cutters, in particular for the production of wood wool
DE3316822A1 (en) * 1983-05-07 1984-11-08 Maschinenfabrik Bezner Gmbh & Co Kg, 7980 Ravensburg Cutting insert, especially for wood chipping machines
DE3620807A1 (en) * 1986-06-24 1988-02-04 Barke Maschinenmesser Gmbh METHOD FOR PRODUCING REVERSIBLE KNIVES

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE581776C (en) * 1933-08-02 Tonsor Ab Process for making the cutting edges of thin razor blades
DE649557C (en) * 1937-08-27 Franz Rodeck Wooden planes with replaceable, straight-edged, flat, flexible knife blades
GB258142A (en) * 1926-01-08 1926-09-16 Roland Davy Improvements in or relating to the manufacture of safety razor and similar blades
US2365581A (en) * 1943-12-16 1944-12-19 Gillette Safety Razor Co Safety razor blade and process of manufacturing the same
DE3300105A1 (en) * 1983-01-04 1984-07-12 Barke GmbH, 6384 Schmitten Method of producing slitting or parting cutters, in particular for the production of wood wool
DE3316822A1 (en) * 1983-05-07 1984-11-08 Maschinenfabrik Bezner Gmbh & Co Kg, 7980 Ravensburg Cutting insert, especially for wood chipping machines
DE3620807A1 (en) * 1986-06-24 1988-02-04 Barke Maschinenmesser Gmbh METHOD FOR PRODUCING REVERSIBLE KNIVES

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406560B (en) * 1997-04-24 2000-06-26 Payer Lux Elektroprod Method of producing blade blocks or foil cutting heads for shavers
EP1479784B1 (en) * 2003-05-21 2008-12-31 Thyssenkrupp Automotive AG Method for producing a formed component
CN103386433A (en) * 2012-05-11 2013-11-13 陆学中 Paper shredding blade punching forming machining method
CN103386433B (en) * 2012-05-11 2016-06-29 陆学中 Blade for shredding paper punch forming processing method
CN111349760A (en) * 2020-04-30 2020-06-30 重庆派斯克刀具制造股份有限公司 Quick-change planer tool heat treatment processing technique

Also Published As

Publication number Publication date
ATA206687A (en) 1988-04-15
DE3620807A1 (en) 1988-02-04
DE3620807C2 (en) 1989-02-09
AT386973B (en) 1988-11-10
CH673104A5 (en) 1990-02-15

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