DE3742864A1 - Knife with constant cutting sharpness - Google Patents

Knife with constant cutting sharpness

Info

Publication number
DE3742864A1
DE3742864A1 DE19873742864 DE3742864A DE3742864A1 DE 3742864 A1 DE3742864 A1 DE 3742864A1 DE 19873742864 DE19873742864 DE 19873742864 DE 3742864 A DE3742864 A DE 3742864A DE 3742864 A1 DE3742864 A1 DE 3742864A1
Authority
DE
Germany
Prior art keywords
knife
blade
base body
cutting edges
knife blade
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.)
Ceased
Application number
DE19873742864
Other languages
German (de)
Inventor
Kurt Horn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19873742864 priority Critical patent/DE3742864A1/en
Publication of DE3742864A1 publication Critical patent/DE3742864A1/en
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006Cutting members therefor
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D34/00Mowers; Mowing apparatus of harvesters
    • A01D34/01Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/73Cutting apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006Cutting members therefor
    • B26D2001/0053Cutting members therefor having a special cutting edge section or blade section

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental Sciences (AREA)
  • Knives (AREA)

Abstract

The invention relates to a knife, especially for cutting devices used in agriculture. When the cutting edges are worn, according to the current state of the art a) the cutting edges are resharpened or b) the knife blades are replaced by new ones or c) the knife blades are provided peripherally with a plurality of cutting edges which come into use as previous cutting edges are worn out using the indexable insert principle. The object of the invention is to design a corresponding knife in such a way that serviceable lives are increased without grinding or regrinding the cutting edges. This object is achieved according to the invention in that, by means of a constant knife blade thickness, which at the same time corresponds to the cutting edge thickness, the cutting edge thickness remains the same even when worn. The drawing shows the structure of the knife blade (1) and the way in which it is fastened by means of connecting elements (2) and supporting elements (3) to the basic body (4) of the knife. The basic body of the knife can be made of a relatively cost- effective flat material, as it is subjected to a smaller specific load than the knife blades. The serviceable life is derived from the amount by which the cutting edges project in relation to the front edges of the basic body of the knife. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Messer, insbesondere für landwirtschaftlich genutzte Schneidvorrichtungen, bei dem die Messerklinge im gesamten Abnutzungsbereich aus­ schließlich die Dicke der Schneidkante aufweist und an einem Messergrundkörper befestigt ist.The invention relates to a knife, in particular for agricultural cutting devices, at the knife blade in the entire area of wear finally has the thickness of the cutting edge and on a knife base is attached.

Der Nachteil geschliffener Schneidkanten besteht vor allem darin, daß deren Standzeiten relativ gering sind.The disadvantage of ground cutting edges is above all in that their downtimes are relatively short.

Dies hat dazu geführt, daß man z. B. bei rotierenden Mäh­ werken die Messerklingen wegen des Aufwands nicht nach­ schärft, sondern gegen neue Messerklingen austauscht.This has resulted in z. B. with rotating mower do not rework the knife blades because of the effort sharpens, but exchanged for new knife blades.

Die der Erfindung zugrundeliegende Aufgabe besteht da­ rin, ein Messer, insbesondere für landwirtschaftlich ge­ nutzte Schneidvorrichtungen so zu gestalten, daß die Stand­ zeiten erhöht werden und ein An- oder Nachschleifen der Schneidkanten nicht erforderlich ist.The object underlying the invention is there rin, a knife, especially for agricultural purposes used cutting devices so that the stand times are increased and the grinding or regrinding of the Cutting edges are not required.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß auf­ grund konstanter Materialdicke der Messerklinge im Abnutz­ ungsbereich die Schneidkantendicke auch bei fortschreiten­ der Abnutzung erhalten bleibt.This object is achieved in that due to constant material thickness of the knife blade in wear the cutting edge thickness even if it progresses wear remains.

Vorteilhafte bauliche Ausgestaltungen des erfindungsgemä­ ßen Messers sind den Ansprüchen 1 bis 14 zu entnehmen.Advantageous structural designs of the invention ß knife can be found in claims 1 to 14.

Ausführungsbeispiele der Erfindung sind in Zeichnungen dar­ gestellt und im folgenden näher beschrieben. Dabei zeigt.Embodiments of the invention are shown in drawings provided and described in more detail below. It shows.

Fig. 1 ein Rasenmähermesser mit Messerklingen gemäß der Er­ findung in perspektivischer Ansicht, Fig. 1 is a lawn mower with knife blades in accordance with the He invention in perspective view;

Fig. 2 und 3 jeweils eine Schnittdarstellung gemäß der Schnittlinie A-B in Fig. 1. Figs. 2 and 3 each show a sectional view according to the section line AB in FIG. 1.

In Fig. 1 bestehen die Stützelemente 3 aus Unterlegscheiben. Die Messerklinge 1 ist hierbei auf der Oberseite des Messer­ grundkörpers 4 angeordnet.In Fig. 1, the support elements 3 consist of washers. The knife blade 1 is arranged on the top of the knife base body 4 .

Beim Ausführungsbeispiel nach Fig. 2 bestehen die Verbindungs­ elemente 2 aus Schrauben mit Muttern, die Stützelemente 3 aus Profilleisten.In the embodiment of FIG. 2, the connecting elements 2 consist of screws with nuts, the support elements 3 from profile strips.

Die Messerklinge 1 ist hierbei zwischen Ober- und Untersei­ te des Messergrundkörpers 4 angeordnet.The knife blade 1 is arranged between the upper and lower te of the knife base body 4 .

Beim Ausführungsbeispiel nach Fig. 3 bestehen die Verbin­ dungselemente 2 aus Nieten, die Stützelemente 3 aus Profil­ leisten.In the embodiment of FIG. 3, the connec tion elements 2 made of rivets, the support elements 3 made of profile.

Die Messerklinge 1 ist hierbei zwischen Ober- und Untersei­ te des Messergrundkörpers 4 angeordnet. Die Messerklinge 1 besteht aus einem dünnem Blech höherer Festigkeit (z. B. Federstahlblech), das eben ausgebildet ist.The knife blade 1 is arranged between the upper and lower te of the knife base body 4 . The knife blade 1 consists of a thin sheet of higher strength (e.g. spring steel sheet), which is flat.

Die Messerklinge 1 ist mittels Verbindungselementen 2 und Stützelementen 3 am Messergrundkörper 4 befestigt und im Arbeitsbereich d. h. im äußeren Rotationsdurchmesserbe­ reich des Messers angeordnet.The knife blade 1 is fastened to the knife base body 4 by means of connecting elements 2 and supporting elements 3 and is arranged in the working area ie in the outer rotation diameter region of the knife.

Die Anbringung der Messerklinge ist sowohl auf der Obersei­ te wie auch auf der Unterseite oder zwischen Ober- und Un­ terseite (siehe Fig. 1 bis 3) des Messergrundkörpers möglich. Der Überstand der Messerklinge in Arbeitsrichtung des Mes­ sers bewirkt in Verbindung mit der konstanten Messerklin­ gendicke die erfindungsgemäße Aufgabenlösung.The attachment of the knife blade is possible both on the upper side and on the lower side or between the upper and lower side (see FIGS . 1 to 3) of the basic body of the knife. The protrusion of the knife blade in the working direction of the knife causes the task solution according to the invention in conjunction with the constant knife blade thickness.

Da der Messergrundkörper bei dem Arbeitsvorgang des Schnei­ dens spezifisch geringer belastet wird als die Messerklinge, kann er im Vergleich zu dieser aus kostengünstigerem Flach­ stahlmaterial hergestellt werden.Since the knife body during the cutting operation which is loaded less specifically than the knife blade, it can compare to this from cheaper flat steel material are manufactured.

Claims (14)

1. Messer mit konstanter Schneidenschärfe, insbeson­ dere für landwirtschaftlich genutzte Schneidvorrich­ tungen, dadurch gekennzeichnet, daß die Messerklinge (1) eine konstante Dicke der Schneidkante aufweist.1. Knife with constant cutting sharpness, in particular for agricultural cutting devices, characterized in that the knife blade ( 1 ) has a constant thickness of the cutting edge. 2. Messer nach Anspruch 1, dadurch gekennzeichnet, daß die Messerklinge (1) an einem Messergrundkörper (4) befestigt ist.2. Knife according to claim 1, characterized in that the knife blade ( 1 ) is attached to a knife base body ( 4 ). 3. Messer nach den Ansprüchen 1 und 2, dadurch gekenn­ zeichnet, daß von der Schneidkante bis zum Messergrund­ körper (4) in Arbeitsrichtung ein Überstand vorgegeben ist.3. Knife according to claims 1 and 2, characterized in that an overhang is predetermined in the working direction from the cutting edge to the knife base body ( 4 ). 4. Messer nach den Ansprüchen 1 bis 3, dadurch gekenn­ zeichnet, daß der Überstand der Messerklinge (1) durch den vorgegebenen Abnutzungsbereich bestimmt wird.4. Knife according to claims 1 to 3, characterized in that the protrusion of the knife blade ( 1 ) is determined by the predetermined area of wear. 5. Messer nach den Ansprüchen 1 bis 4, dadurch gekenn­ zeichnet, daß die Messerklinge (1) aus dünnem Blech hö­ herer Festigkeit (z. B. Federstahlblech) besteht.5. Knife according to claims 1 to 4, characterized in that the knife blade ( 1 ) consists of thin sheet metal higher strength (z. B. spring steel sheet). 6. Messer nach den Ansprüchen 1 bis 5, dadurch gekenn­ zeichnet, daß der Messergrundkörper (4) aus kostengünsti­ gerem Flachstahlmaterial besteht.6. Knife according to claims 1 to 5, characterized in that the knife base body ( 4 ) consists of inexpensive ger flat steel material. 7. Messer nach den Ansprüchen 1 bis 6, dadurch gekenn­ zeichnet, daß die Befestigung der Messerklinge (1) am Messergrundkörper (4) mittels Verbindungselementen (2) und Stützelementen (3) erfolgt.7. Knife according to claims 1 to 6, characterized in that the attachment of the knife blade ( 1 ) on the knife base body ( 4 ) by means of connecting elements ( 2 ) and support elements ( 3 ). 8. Messer nach den Ansprüchen 1 bis 6, dadurch gekenn­ zeichnet, daß die Befestigung der Messerklinge (1) am Messergrundkörper (4) mittels Verbindungselementen (2), jedoch ohne Stützelemente erfolgt.8. Knife according to claims 1 to 6, characterized in that the attachment of the knife blade ( 1 ) on the knife base body ( 4 ) by means of connecting elements ( 2 ), but without support elements. 9. Messer nach den Ansprüchen 1 bis 8, dadurch gekenn­ zeichnet, daß die Messerklinge (1) auf der Oberseite des Messergrundkörpers (4) angeordnet ist.9. Knife according to claims 1 to 8, characterized in that the knife blade ( 1 ) on the top of the knife base body ( 4 ) is arranged. 10. Messer nach den Ansprüchen 1 bis 8, dadurch gekenn­ zeichnet, daß die Messerklinge (1) auf der Unterseite des Messergrundkörpers (4) angeordnet ist.10. Knife according to claims 1 to 8, characterized in that the knife blade ( 1 ) is arranged on the underside of the knife base body ( 4 ). 11. Messer nach den Ansprüchen 1 bis 8, dadurch gekenn­ zeichnet, daß die Messerklinge (1) austauschbar am Mes­ sergrundkörper (4) befestigt ist.11. Knife according to claims 1 to 8, characterized in that the knife blade ( 1 ) is interchangeably attached to the Mes sergrundkörper ( 4 ). 12. Messer nach den Ansprüchen 1 bis 8, dadurch gekenn­ zeichnet, daß die Messerklinge (1) nicht austauschbar am Messergrundkörper (4) befestigt ist.12. Knife according to claims 1 to 8, characterized in that the knife blade ( 1 ) is not exchangeably attached to the knife base body ( 4 ). 13. Messer nach den Ansprüchen 1 bis 12, dadurch gekenn­ zeichnet, daß die Messerklinge (1) die Umrißform eines Vierecks aufweist.13. Knife according to claims 1 to 12, characterized in that the knife blade ( 1 ) has the outline shape of a square. 14. Messer nach den Ansprüchen 1 bis 12, dadurch gekenn­ zeichnet, daß die Messerklinge (1) eben ausgebildet ist.14. Knife according to claims 1 to 12, characterized in that the knife blade ( 1 ) is flat.
DE19873742864 1987-12-17 1987-12-17 Knife with constant cutting sharpness Ceased DE3742864A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873742864 DE3742864A1 (en) 1987-12-17 1987-12-17 Knife with constant cutting sharpness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873742864 DE3742864A1 (en) 1987-12-17 1987-12-17 Knife with constant cutting sharpness

Publications (1)

Publication Number Publication Date
DE3742864A1 true DE3742864A1 (en) 1989-07-27

Family

ID=6342873

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873742864 Ceased DE3742864A1 (en) 1987-12-17 1987-12-17 Knife with constant cutting sharpness

Country Status (1)

Country Link
DE (1) DE3742864A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29714754U1 (en) * 1997-08-18 1997-10-09 Inotec GmbH Maschinenentwicklung u. Vertrieb, 72770 Reutlingen Rotatable knife for cutting sausages
EP2825354B1 (en) 2012-03-14 2017-09-06 GEA Food Solutions Germany GmbH Cutting blade with means for producing an airstream
CN109819646A (en) * 2016-09-27 2019-05-28 苏州宝时得电动工具有限公司 Grass trimmer and its blade

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE506076C (en) * 1930-09-10 Ernst Vollmann Cutting tool for cheese and slicing machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE506076C (en) * 1930-09-10 Ernst Vollmann Cutting tool for cheese and slicing machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29714754U1 (en) * 1997-08-18 1997-10-09 Inotec GmbH Maschinenentwicklung u. Vertrieb, 72770 Reutlingen Rotatable knife for cutting sausages
EP2825354B1 (en) 2012-03-14 2017-09-06 GEA Food Solutions Germany GmbH Cutting blade with means for producing an airstream
CN109819646A (en) * 2016-09-27 2019-05-28 苏州宝时得电动工具有限公司 Grass trimmer and its blade

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OP8 Request for examination as to paragraph 44 patent law
8131 Rejection