EP2883669B1 - Cutting tooth for a saw chain - Google Patents
Cutting tooth for a saw chain Download PDFInfo
- Publication number
- EP2883669B1 EP2883669B1 EP14004127.8A EP14004127A EP2883669B1 EP 2883669 B1 EP2883669 B1 EP 2883669B1 EP 14004127 A EP14004127 A EP 14004127A EP 2883669 B1 EP2883669 B1 EP 2883669B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rivet
- distance
- base body
- running direction
- cutting
- 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.)
- Active
Links
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000005219 brazing Methods 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 240000006829 Ficus sundaica Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
- B27B33/14—Saw chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
- B27B33/14—Saw chains
- B27B33/142—Cutter elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
- B27B33/14—Saw chains
- B27B33/141—Saw chains with means to control the depth of cut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
- B27B33/14—Saw chains
- B27B33/142—Cutter elements
- B27B33/144—Cutter elements having cutting inserts or exchangeable cutting teeth
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/909—Cutter assemblage or cutter element therefor [e.g., chain saw chain]
- Y10T83/925—Having noncutting depth gauge
Definitions
- the invention relates to a cutting tooth for a saw chain according to the preamble of claim 1.
- a generic cutting tooth which consists of a base body with a cutter attached to the base body of hard metal. In the foot region of the main body rivet openings are formed, which follow one another in the direction of the cutting tooth. In the direction of the cutting element, a depth limiter is provided on the base body. Between the depth limiter and the cutting tooth a chip recess is formed. The cutting element is held in a countersink in the upper edge of the base body, wherein a side portion of the cutting element is fixed by means of brazing on the side surface of the base body. Good cutting results are achieved with the known cutting tooth.
- the cutting element made of hard metal is designed to be small relative to the base body, so that the hard soldering surfaces defining the cutting element on the base body are limited.
- the invention has the object of providing a cutting tooth of the generic type such that a large-area, resistant connection of the cutting element made of hard metal is given to the main body of the cutting tooth to increase the cutting performance and service life of the cutting tooth.
- the corner point so far in the direction of the cutting tooth to lay forward that the corner is at a first distance to a chip recess defining high edge of the depth limiter, which is smaller than a second distance of a median plane to the high edge of the depth limiter ,
- the median plane divides the rivet spacing between the rivet openings, wherein the distance line of the center axes of the rivet openings is perpendicular to the median plane.
- the design is chosen so that - seen in side view - the high edge of the depth limiter lies in the direction of travel in front of the central axis of the front in the direction of the rivet opening.
- the chip recess thus extends - seen in plan view of the cutting tooth - in the running direction to the center axis of the front rivet opening.
- the corner lies in the front half of the rivet spacing in the running direction, ie in the direction of travel in front of the median plane, which divides the rivet spacing and on which the rivet spacing is perpendicular.
- This geometrical design creates a cutting tooth that resists even heavy loads, shows good cutting performance and ensures a long service life.
- the distance of the corner point of the high edge of the depth limiter is 0.5 times to 0.8 times the distance of the median plane to the vertical axis of the depth limiter.
- the distance of the corner point to the vertical axis is designed so that it is 0.6 times to 0.7 times, in particular 0.65 times the distance of the vertical axis to the center plane.
- the intended for receiving the preferably L-shaped cutting element counterbore extends in the direction of a length corresponding to about 70% to 90% of a section length of the upper edge extending between the chip recess and the rear end edge of the main body in the direction.
- the countersink has an end which is remote from the depth limiter and forms a stop for the cutting element. At the stop of the roof portion of the cutting element is applied, so that the cutting element is supported against the running direction of the cutting tooth with its roof section.
- the position of the cutting element on the base body and the length of the cutting element itself are chosen so that the rear end of the cutting element ends in the direction of the rear rivet hole.
- the measured in the direction of the length of the cutting element is preferably 70% to 100% of the rivet spacing of the center axes of the rivet openings from each other. In particular, a length is selected which is 90% of the rivet spacing.
- the geometry of the cutting element is designed so that the ratio of a maximum height of the cutting element measured perpendicular to the running direction to a maximum length of the cutting element measured in the running direction is in the range from 0.4 to 0.5, in particular 0.46.
- the cutting element itself has a side portion which has a rivet openings facing, extending in the direction of the lower longitudinal edge.
- This longitudinal edge extends over the length of the cutting element at an angle, preferably at an angle of 0.5 ° to 2 ° to a reference plane which is determined by the center axes of the rivet openings.
- the position of the corner point is based on the main body of the cutting tooth chosen so that the distance between the central axis of the trailing in the direction of the rear rivet and the corner in the chip recess 85% to 110% of the measured in the direction of rivet spacing of the center axes of the rivet openings from each other.
- a distance of the central axis is selected to the vertex, which is about 95% of the rivet spacing.
- the distance line between the central axis of the rear rivet opening and the corner point in the chip recess is at an angle of 35 ° to 40 ° to a reference plane which is spanned by the center axes of the rivet openings.
- the angle of the distance line with the reference plane is 37 °.
- the depth limiter of the cutting tooth is formed integrally with the main body of the cutting tooth, in particular as provided by the main body bent residual flange.
- the residual flange is a front lying in the direction of the section, which results after the formation of the chip recess 5.
- the cutting tooth 1 shown in the figures has a main body 2, which consists essentially of a planar board 22.
- the main body 2 has - as in particular from the side views of the FIGS. 2 and 3 can be seen - an upper edge 31 and a lower foot portion 28 on.
- rivet openings 11 and 12 are formed, which follow one another in the direction LR of the cutting tooth 1.
- the rivet opening 11 is a leading, front rivet opening, while the rivet opening 12 is a trailing, rear rivet opening.
- each rivet opening has a central axis M1 and M2, which lie in the direction LR with a rivet spacing N to each other.
- a chip recess 5 is formed, which extends between a countersink 30 (FIG. Fig. 3 ) extends in the upper edge 31 and a left in the direction LR residual flange 34.
- the residual flange 34 is angled out of the plane of the board 22, as the Fig. 1 and 6 clearly show.
- the angled residual flange 34 forms a depth limiter 4 of the cutting tooth.
- the countersink 30 ( Fig. 3 ) is open at its front in the direction LR end to SpanausEnglishung 5, while at its rear end a residual portion 35 of the upper edge 31 forms a stop 10 for a cutting element 3.
- the cutting element 3 has, as Fig. 7 shows, seen in the direction LR an L-shaped basic shape.
- a resting on the side surface 32 side legs 27 of the body forms a side portion 7 of the cutting element 3; an angle to the side surface 32 lying roof leg 26 forms a roof portion 6 of the cutting element.
- the roof surface of the roof section 6 is at an angle 25 of about 9 ° to the reference plane H, wherein the angle 25 opens forward in the direction LR.
- a roof cutting 16 is formed; on the front in the direction LR edge of the side portion 7 a side cutting edge 17 is formed.
- the side cutting edge 17 is designed in the form of a groove.
- the cutting element 3 is made of hard metal and is by means of a heat-introducing compound such.
- the roof section 6 is located in the countersink 30, wherein the bottom 36 of the countersink 30 is materially connected to the overlying surface of the roof section 6.
- the roof portion 6 is integrally connected over the entire bottom surface 36 with the base body 2, preferably brazed.
- the length S of the countersink 30 is shorter than the maximum length L max (FIG. Fig. 2 ) of the cutting element 3.
- the cutting tooth 3 thus protrudes into the chip recess 5 a.
- Both the roof section 6 and the side section 7 protrude into the chip recess 5.
- the edge contour 15 of the chip recess 5 and the front in the direction of LR contour 13 of the side portion 7 of the cutting tooth 3 form a side view of the base body 2 (s. Fig. 3 ) From a corner 8, which lies within the chip recess 5.
- a median plane V is erected which divides the rivet spacing N in the middle.
- the distance line of the rivet spacing N is perpendicular to the median plane V.
- the depth limiter 4 has a clamping edge 5 limiting high edge 9 ( Fig. 3 ).
- this high edge 9 is substantially vertical in side view, ie the high edge 9 is perpendicular to a reference plane H determined by the center axes M1 and M2 of the rivet openings 11, 12.
- the high edge 9 may also be inclined in the direction LR, as shown in dashed lines is.
- the corner point 8 formed by the contour 13 of the side section 7 and the contour 15 of the chip recess 5 lies at a distance A from the top edge 9.
- the center plane V lies at a distance B from the top edge 9.
- the geometry is selected so that the Distance A is smaller than the distance B.
- the vertical axis 9 lies in the direction LR in front of the central axis M1 of the front rivet opening 11. This is in the side view Fig. 3 shown.
- the distance A or B measured in the running direction LR is measured from the same distance point 39 to the center plane V. Is the high edge 9 - as indicated by dashed lines with the reference numeral 9 '- z. B. inclined in the direction of LR, so arise based on a distance point 39 'of the inclined high edge 9', the same spacing conditions as in a plane perpendicular to the reference plane H high edge.
- the structural design and design of the cutting tooth ensures a high level of operational reliability over a long period of operation, wherein the cutting tooth 3 is materially connected over a maximum area with the planar board 22 of the base body 2, z. B. by brazing, in particular by silver solder.
- the cutting tooth 3 is supported on a stop 10, against which the roof section 6 of the cutting element 3 abuts against the running direction LR.
- the stop 10 forms the rear in the running direction LR end of the countersink 30.
- the stop 10 having the end facing away from the depth limiter 4.
- the surface of the stop 10 is - seen in the running direction - behind the trailing rivet opening 12; expediently - seen in a side view of the main body 2 - the stop 10 has a measured in the direction LR distance 19 to the rivet opening 12th
- the counterbore 30 extends counter to the running direction LR of the cutting tooth 3 to the rear beyond the rear rivet hole 12 so that only a small remaining portion 35 of the upper edge 31 with a residual length R remains.
- the design of the base body 2 and the cutting element 3 is coordinated such that the first distance A of the corner 8 from the distance point 39 and 39 '0.5 times to 0.8 times the second distance B of the distance point 39 and 39' of the median plane V is.
- the first distance A is chosen such that it is 0.6 times to 0.7 times the second distance.
- An expedient embodiment is achieved when the first distance A is 0.65 times the second distance B.
- the extending in the direction of LR counterbore 30 in the upper edge 31 has a length S, which corresponds to about 70% to 90% of the section length of the upper edge 31 extending between the chip recess 5 and the rear end edge 38 of the body 2.
- the constructive design is designed such that the measured in the direction LR maximum length L max of the cutting element 3 is about 70% to 100% of the distance N of the center axes M1 and M2 of the rivet openings 11 and 12 from each other.
- An advantageous embodiment is achieved when the measured length L max in the direction LR is about 90% of the rivet spacing N.
- the geometry of the cutting element 3 is further designed such that the ratio of a maximum height H max of the cutting element 3 measured perpendicular to the running direction to a maximum length L max of the cutting element 3 measured in the running direction LR is in the range from 0.4 to 0.5, as in Fig. 2 shown.
- An optimal design is achieved when a ratio of 0.46 is set.
- Fig. 2 shows that the side portion 7 has a rivet openings 11, 12 facing, extending in the direction LR lower longitudinal edge 14 which extends over the length L max of the cutting element 3.
- the lower longitudinal edge 8 is at an angle 23 of 0.5 ° to 2 ° to the reference plane H through the center axes M1 and M2 of the rivet openings 11 and 12.
- the lower longitudinal edge 8 of the side portion defines a chamfer 18 at the lower end of the side portion 7 is formed and extends in the running direction LR.
- the distance E between the center axis M2 of the trailing in the direction LR rear rivet opening 12 and the corner 8 in the chip recess 5 is selected so that the distance E about 85% to 110% of the measured in the direction LR rivet spacing N of the central axes M1 and M2 the rivet openings 11 and 12 amounts to.
- the distance E is expediently selected to be 95% of the rivet spacing N.
- the distance line 20 between the central axis M1 of the rear rivet opening 12 and the corner 8 in the chip recess 5 forms with the reference plane H an angle 23 between 35 ° and 40 °.
- the position of the corner point 8 is selected such that the angle 23 has a size of about 37 °.
- the excavated from the plane of the board 22 of the base body 2 depth limiter 4 is angled at an angle 24 of about 10 ° to 15 °, in particular 12 °.
- the depth limiter 4 is formed integrally with the base body 2.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Insertion Pins And Rivets (AREA)
- Sawing (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Description
Die Erfindung betrifft einen Schneidzahn für eine Sägekette nach dem Oberbegriff des Anspruchs 1.The invention relates to a cutting tooth for a saw chain according to the preamble of
Aus der
Das aus Hartmetall bestehende Schneidelement ist relativ zum Grundkörper klein ausgebildet, so dass die das Schneidelement am Grundkörper festlegenden Hartlotflächen begrenzt sind.The cutting element made of hard metal is designed to be small relative to the base body, so that the hard soldering surfaces defining the cutting element on the base body are limited.
Der Erfindung liegt die Aufgabe zugrunde, einen Schneidzahn der gattungsgemäßen Art derart weiterzubilden, dass eine großflächige, widerstandsfähige Verbindung des Schneidelementes aus Hartmetall mit dem Grundkörper des Schneidzahns gegeben ist, um die Schnittleistung und die Standzeit des Schneidzahns zu erhöhen.The invention has the object of providing a cutting tooth of the generic type such that a large-area, resistant connection of the cutting element made of hard metal is given to the main body of the cutting tooth to increase the cutting performance and service life of the cutting tooth.
Die Aufgabe wird erfindungsgemäß nach den kennzeichnenden Merkmalen des Anspruchs 1 gelöst.The object is achieved according to the characterizing features of
In Seitenansicht auf die Spanausnehmung definieren die Innenkontur der Spanausnehmung und die vordere Kontur des in die Spanausnehmung einragenden Seitenabschnitts des Schneidelementes einen Eckpunkt, der in der Spanausnehmung liegt. Nach der Erfindung ist vorgesehen, den Eckpunkt derart weit in Laufrichtung des Schneidzahns nach vorne zu legen, dass der Eckpunkt mit einem ersten Abstand zu einer die Spanausnehmung begrenzenden Hochkante des Tiefenbegrenzers liegt, der kleiner ist als ein zweiter Abstand einer Mittelebene zu der Hochkante des Tiefenbegrenzers. Die Mittelebene teilt den Nietabstand zwischen den Nietöffnungen, wobei die Abstandslinie der Mittelachsen der Nietöffnungen senkrecht auf der Mittelebene steht. Die Gestaltung ist dabei so gewählt, dass - in Seitenansicht gesehen - die Hochkante des Tiefenbegrenzers in Laufrichtung vor der Mittelachse der in Laufrichtung vorderen Nietöffnung liegt. Die Spanausnehmung erstreckt sich somit - in Draufsicht auf den Schneidzahn gesehen - in Laufrichtung bis vor die Mittelachse der vorderen Nietöffnung.In side view of the chip recess define the inner contour of the chip recess and the front contour of the projecting into the chip recess side portion of the cutting element a corner, which lies in the chip recess. According to the invention, the corner point so far in the direction of the cutting tooth to lay forward that the corner is at a first distance to a chip recess defining high edge of the depth limiter, which is smaller than a second distance of a median plane to the high edge of the depth limiter , The median plane divides the rivet spacing between the rivet openings, wherein the distance line of the center axes of the rivet openings is perpendicular to the median plane. The design is chosen so that - seen in side view - the high edge of the depth limiter lies in the direction of travel in front of the central axis of the front in the direction of the rivet opening. The chip recess thus extends - seen in plan view of the cutting tooth - in the running direction to the center axis of the front rivet opening.
Nach der Erfindung liegt der Eckpunkt in der in Laufrichtung vorderen Hälfte des Nietabstandes, also in Laufrichtung vor der Mittelebene, die den Nietabstand teilt und auf der der Nietabstand lotrecht steht.According to the invention, the corner lies in the front half of the rivet spacing in the running direction, ie in the direction of travel in front of the median plane, which divides the rivet spacing and on which the rivet spacing is perpendicular.
Durch diese geometrische Auslegung wird ein Schneidzahn geschaffen, der auch großen Belastungen widersteht, eine gute Schnittleistung zeigt und eine lange Betriebsdauer gewährleistet.This geometrical design creates a cutting tooth that resists even heavy loads, shows good cutting performance and ensures a long service life.
Zweckmäßig beträgt der Abstand des Eckpunktes von der Hochkante des Tiefenbegrenzers das 0,5fache bis 0,8fache des Abstandes der Mittelebene zur Hochachse des Tiefenbegrenzers.Suitably, the distance of the corner point of the high edge of the depth limiter is 0.5 times to 0.8 times the distance of the median plane to the vertical axis of the depth limiter.
In besonderer Gestaltung ist der Abstand des Eckpunktes zur Hochachse so ausgelegt, dass er das 0,6fache bis 0,7fache, insbesondere das 0,65fache des Abstandes der Hochachse zur Mittelebene beträgt.In a particular embodiment, the distance of the corner point to the vertical axis is designed so that it is 0.6 times to 0.7 times, in particular 0.65 times the distance of the vertical axis to the center plane.
Die zur Aufnahme des vorzugsweise L-förmig ausgebildeten Schneidelementes vorgesehene Ansenkung erstreckt sich in Laufrichtung über eine Länge, die etwa 70% bis 90% einer Abschnittslänge des oberen Randes entspricht, der sich zwischen der Spanausnehmung und der in Laufrichtung hinteren Abschlusskante des Grundkörpers erstreckt.The intended for receiving the preferably L-shaped cutting element counterbore extends in the direction of a length corresponding to about 70% to 90% of a section length of the upper edge extending between the chip recess and the rear end edge of the main body in the direction.
Zweckmäßig weist die Ansenkung ein Ende auf, das von dem Tiefenbegrenzer abgewandt liegt und einen Anschlag für das Schneidelement bildet. An dem Anschlag liegt der Dachabschnitt des Schneidelementes an, so dass sich das Schneidelement entgegen der Lauf richtung des Schneidzahns mit seinem Dachabschnitt abstützt.Suitably, the countersink has an end which is remote from the depth limiter and forms a stop for the cutting element. At the stop of the roof portion of the cutting element is applied, so that the cutting element is supported against the running direction of the cutting tooth with its roof section.
Die Position des Schneidelementes am Grundkörper und die Länge des Schneidelementes selbst sind so gewählt, dass das hintere Ende des Schneidelementes in Laufrichtung nach dem hinteren Nietloch endet. Die in Laufrichtung gemessene Länge des Schneidelementes beträgt vorzugsweise 70% bis 100% des Nietabstandes der Mittelachsen der Nietöffnungen voneinander. Insbesondere ist eine Länge gewählt, die 90% des Nietabstandes beträgt.The position of the cutting element on the base body and the length of the cutting element itself are chosen so that the rear end of the cutting element ends in the direction of the rear rivet hole. The measured in the direction of the length of the cutting element is preferably 70% to 100% of the rivet spacing of the center axes of the rivet openings from each other. In particular, a length is selected which is 90% of the rivet spacing.
Die Geometrie des Schneidelementes ist so ausgelegt, dass das Verhältnis einer senkrecht zur Laufrichtung gemessenen maximalen Höhe des Schneidelementes zu einer in Laufrichtung gemessenen maximalen Länge des Schneidelementes im Bereich von 0,4 bis 0,5 liegt, insbesondere 0,46 ist.The geometry of the cutting element is designed so that the ratio of a maximum height of the cutting element measured perpendicular to the running direction to a maximum length of the cutting element measured in the running direction is in the range from 0.4 to 0.5, in particular 0.46.
Das Schneidelement selbst hat einen Seitenabschnitt, der eine den Nietöffnungen zugewandt liegende, sich in Laufrichtung erstreckende untere Längskante aufweist. Diese Längskante erstreckt sich über die Länge des Schneidelementes unter einem Winkel, vorzugsweise unter einem Winkel von 0,5° bis 2° zu einer Bezugsebene, die durch die Mittelachsen der Nietöffnungen bestimmt ist.The cutting element itself has a side portion which has a rivet openings facing, extending in the direction of the lower longitudinal edge. This longitudinal edge extends over the length of the cutting element at an angle, preferably at an angle of 0.5 ° to 2 ° to a reference plane which is determined by the center axes of the rivet openings.
Die Lage des Eckpunktes ist bezogen auf den Grundkörper des Schneidzahns so gewählt, dass der Abstand zwischen der Mittelachse der in Laufrichtung nachlaufenden hinteren Nietöffnung und dem Eckpunkt in der Spanausnehmung 85% bis 110% des in Laufrichtung gemessenen Nietabstandes der Mittelachsen der Nietöffnungen voneinander beträgt. Insbesondere ist ein Abstand der Mittelachse zum Eckpunkt gewählt, der etwa 95% des Nietabstandes beträgt. Die Abstandslinie zwischen der Mittelachse der hinteren Nietöffnung und dem Eckpunkt in der Spanausnehmung liegt unter einem Winkel von 35° bis 40° zu einer Bezugsebene, die durch die Mittelachsen der Nietöffnungen aufgespannt ist. Insbesondere beträgt der Winkel der Abstandslinie mit der Bezugsebene 37°.The position of the corner point is based on the main body of the cutting tooth chosen so that the distance between the central axis of the trailing in the direction of the rear rivet and the corner in the chip recess 85% to 110% of the measured in the direction of rivet spacing of the center axes of the rivet openings from each other. In particular, a distance of the central axis is selected to the vertex, which is about 95% of the rivet spacing. The distance line between the central axis of the rear rivet opening and the corner point in the chip recess is at an angle of 35 ° to 40 ° to a reference plane which is spanned by the center axes of the rivet openings. In particular, the angle of the distance line with the reference plane is 37 °.
Der Tiefenbegrenzer des Schneidzahns ist einteilig mit dem Grundkörper des Schneidzahns ausgebildet, insbesondere als vom Grundkörper abgebogener Restflansch vorgesehen. Der Restflansch ist ein in Laufrichtung vorne liegender Abschnitt, der sich nach Ausbildung der Spanausnehmung 5 ergibt.The depth limiter of the cutting tooth is formed integrally with the main body of the cutting tooth, in particular as provided by the main body bent residual flange. The residual flange is a front lying in the direction of the section, which results after the formation of the chip recess 5.
Der Grundkörper selbst bildet eine ebene Platine, wobei der Restflansch zunächst in dieser Ebene der Platine liegt. Zur Bildung des Tiefenbegrenzers wird der Restflansch aus der Ebene der Platine abgewinkelt.The main body itself forms a flat board, the residual flange is initially in this plane of the board. To form the depth limiter, the residual flange is angled away from the plane of the board.
Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und der Zeichnung, in der nachfolgend ein im Einzelnen beschriebenes Ausführungsbeispiel der Erfindung dargestellt ist. Es zeigen:
- Fig. 1
- eine perspektivische Darstellung eines erfindungsgemäßen Schneidzahns mit einem Schneidelement aus Hartmetall,
- Fig. 2
- eine Seitenansicht auf den Schneidzahn nach
Fig. 1 , - Fig. 3
- eine weitere Seitenansicht auf den Schneidzahn nach
Fig. 1 , - Fig. 4
- eine Draufsicht auf den Schneidzahn nach
Fig. 1 , - Fig. 5
- eine Ansicht von unten auf den Schneidzahn nach
Fig. 1 , - Fig. 6
- eine Ansicht von vorne auf den Schneidzahn nach
Fig. 1 ,
- Fig. 7
- eine Ansicht von hinten auf den Schneidzahn nach
Fig. 1 .
- Fig. 1
- a perspective view of a cutting tooth according to the invention with a cutting element made of hard metal,
- Fig. 2
- a side view of the cutting tooth
Fig. 1 . - Fig. 3
- another side view of the cutting tooth after
Fig. 1 . - Fig. 4
- a plan view of the cutting tooth after
Fig. 1 . - Fig. 5
- a view from below of the cutting tooth
Fig. 1 . - Fig. 6
- a view from the front of the cutting tooth
Fig. 1 .
- Fig. 7
- a view from behind of the cutting tooth
Fig. 1 ,
Der in den Figuren dargestellte Schneidzahn 1 weist einen Grundkörper 2 auf, der im Wesentlichen aus einer ebenen Platine 22 besteht. Der Grundkörper 2 weist - wie insbesondere aus den Seitenansichten nach den
Wie in
Im oberen Rand 31 des Grundkörpers 2 ist eine Spanausnehmung 5 ausgebildet, die sich zwischen einer Ansenkung 30 (
Die Ansenkung 30 (
Das Schneidelement 3 hat, wie
Wie insbesondere die
Das Schneidelement 3 besteht aus Hartmetall und wird mittels einer Wärme eintragenden Verbindung wie z. B. Hartlöten stoffschlüssig mit dem Grundkörper 2 des Schneidzahns 1 verbunden.The cutting
Wie insbesondere die
Wie
Wie
Die Randkontur 15 der Spanausnehmung 5 und die in Laufrichtung LR vordere Kontur 13 des Seitenabschnitts 7 des Schneidzahns 3 bilden in Seitenansicht auf den Grundkörper 2 (s.
Zur Bestimmung der Lage des Eckpunkts 8 innerhalb des Spanraums 5 wird eine Mittelebene V errichtet, die den Nietabstand N mittig teilt. Die Abstandslinie des Nietabstandes N steht dabei senkrecht auf der Mittelebene V.To determine the position of the
Der Tiefenbegrenzer 4 hat eine die Spanausnehmung 5 begrenzende Hochkante 9 (
Der von der Kontur 13 des Seitenabschnitts 7 und der Kontur 15 der Spanausnehmung 5 gebildete Eckpunkt 8 liegt mit einem Abstand A zu der Hochkante 9. Die Mittelebene V liegt mit einem Abstand B zu der Hochkante 9. Dabei ist die Geometrie so gewählt, dass der Abstand A kleiner ist als der Abstand B. Die Hochachse 9 liegt in Laufrichtung LR vor der Mittelachse M1 der vorderen Nietöffnung 11. Dies ist in der Seitenansicht nach
Wie in
Die konstruktive Gestaltung und Auslegung des Schneidzahns stellt eine hohe Betriebssicherheit über einen langen Betriebszeitraum sicher, wobei der Schneidzahn 3 über eine maximale Fläche mit der ebenen Platine 22 des Grundkörpers 2 stoffschlüssig verbunden ist, z. B. durch Hartlot, insbesondere durch Silberlot.The structural design and design of the cutting tooth ensures a high level of operational reliability over a long period of operation, wherein the cutting
Entgegen der Laufrichtung LR wird der Schneidzahn 3 an einem Anschlag 10 abgestützt, an dem der Dachabschnitt 6 des Schneidelementes 3 entgegen der Laufrichtung LR anliegt. Der Anschlag 10 bildet das in Laufrichtung LR hintere Ende der Ansenkung 30. Das den Anschlag 10 aufweisende Ende liegt vom Tiefenbegrenzer 4 abgewandt. Die Fläche des Anschlags 10 liegt - in Laufrichtung gesehen - hinter der nachlaufenden Nietöffnung 12; zweckmäßig hat - in Seitenansicht auf den Grundkörper 2 gesehen - der Anschlag 10 einen in Laufrichtung LR gemessenen Abstand 19 zur Nietöffnung 12.Contrary to the running direction LR, the cutting
Die Ansenkung 30 erstreckt sich entgegen der Laufrichtung LR des Schneidzahns 3 bis über das hintere Nietloch 12 hinaus nach hinten, so dass ein nur kleiner Restabschnitt 35 des oberen Randes 31 mit einer Restlänge R verbleibt.The
Zweckmäßig ist die Gestaltung des Grundkörpers 2 und des Schneidelementes 3 derart aufeinander abgestimmt, dass der erste Abstand A des Eckpunktes 8 vom Abstandspunkt 39 bzw. 39' das 0,5fache bis 0,8fache des zweiten Abstandes B des Abstandspunktes 39 bzw. 39' von der Mittelebene V beträgt. In einer optimierten Ausführungsform des Schneidzahns 1 wird der erste Abstand A derart gewählt, dass er das 0,6fache bis 0,7fache des zweiten Abstandes beträgt. Eine zweckmäßige Ausführung wird erzielt, wenn der erste Abstand A das 0,65fache des zweiten Abstands B beträgt.Appropriately, the design of the
Die sich in Laufrichtung LR erstreckende Ansenkung 30 im oberen Rand 31 hat eine Länge S, die etwa 70% bis 90% der Abschnittslänge des oberen Randes 31 entspricht, der sich zwischen der Spanausnehmung 5 und der hinteren Abschlusskante 38 des Grundkörpers 2 erstreckt.The extending in the direction of
Die konstruktive Gestaltung ist derart ausgelegt, dass die in Laufrichtung LR gemessene maximale Länge Lmax des Schneidelementes 3 etwa 70% bis 100% des Abstandes N der Mittelachsen M1 und M2 der Nietöffnungen 11 und 12 voneinander beträgt. Eine vorteilhafte Ausgestaltung wird erreicht, wenn die in Laufrichtung LR gemessene Länge Lmax etwa 90% des Nietabstandes N beträgt.The constructive design is designed such that the measured in the direction LR maximum length L max of the cutting
Die Geometrie des Schneidelementes 3 ist ferner so ausgelegt, dass das Verhältnis einer senkrecht zur Laufrichtung gemessenen maximalen Höhe Hmax des Schneidelementes 3 zu einer in Laufrichtung LR gemessenen maximalen Länge Lmax des Schneidelementes 3 im Bereich von 0,4 bis 0,5 liegt, wie in
Der Abstand E zwischen der Mittelachse M2 der in Laufrichtung LR nachlaufenden, hinteren Nietöffnung 12 und dem Eckpunkt 8 in der Spanausnehmung 5 ist so gewählt, dass der Abstand E etwa 85% bis 110% des in Laufrichtung LR gemessenen Nietabstandes N der Mittelachsen M1 und M2 der Nietöffnungen 11 und 12 beträgt. Zweckmäßig wird der Abstand E mit 95% des Nietabstandes N gewählt.The distance E between the center axis M2 of the trailing in the direction LR rear rivet opening 12 and the
Die Abstandslinie 20 zwischen der Mittelachse M1 der hinteren Nietöffnung 12 und dem Eckpunkt 8 in der Spanausnehmung 5 bildet mit der Bezugsebene H einen Winkel 23 zwischen 35° und 40°. Insbesondere wird die Lage des Eckpunktes 8 derart gewählt, dass der Winkel 23 eine Größe von etwa 37° hat.The
Der aus der Ebene der Platine 22 des Grundkörpers 2 ausgebogene Tiefenbegrenzer 4 ist um einen Winkel 24 von etwa 10° bis 15°, insbesondere 12° abgewinkelt. Im gezeigten Ausführungsbeispiel ist der Tiefenbegrenzer 4 einteilig mit dem Grundkörper 2 ausgebildet. The excavated from the plane of the
Claims (14)
- Cutting tooth (1) for a saw chain, consisting of a base body (2) having a cutting element (3) of hard metal fastened to the base body (2), wherein the base body (2) has an upper edge (31) and a lower bottom region (28) and rivet openings (11, 12) are formed in the lower bottom region (28) of the base body (2), the rivet openings (11, 12) following one after the other in the running direction (LR) of the cutting tooth (1) and forming a front rivet opening (11) and a rear rivet opening (12), wherein a depth limiter (4) is provided in the running direction before the cutting element (3) on the base body (2), and the cutting element (3) of hard metal has a roof section (6) with a roof cutting edge (16) and a side section (7) with a side cutting edge (17) and the side section (7) lies on a side face (32) of the base body (2) and the roof section (6) lies in a countersink (30) in the upper edge (31) of the base body (2), and having a chippings recess (5), formed between the countersink (30) and the depth limiter (4) in the base body (2), for removing the chippings, wherein the cutting element (3) projects in the running direction into the chippings recess (5) and, in the side view onto the base body (2), a front contour (14) of the side section (7) and the inner contour (15) of the chippings recess (5) form a corner point (8) lying in the chippings recess (5), and the cutting element (3) is connected in a material-locking way to the base body (2) by means of a connection incorporating heat, wherein the middle axes (M1, M2) of the rivet openings (11, 12) have a rivet distance (N) from each other which is divided in the middle by a middle plane (V), wherein the rivet distance (N) lies perpendicular to the middle plane (V), characterised in that the corner point (8) lies at a first distance (A) from an upper edge (9) of the depth limiter (4), defining the chippings recess (5), the distance (A) being smaller than a second distance (B) of the middle plane (V) to the upper edge (9) of the depth limiter (4), and the upper edge (9) of the depth limiter (4) lies in the running direction before the middle axis (M1) of the front rivet opening (11) in the running direction.
- Cutting tooth according to claim 1,
characterised in that the first distance (A) is 0.5 times to 0.8 times the second distance (B). - Cutting tooth according to claim 2,
characterised in that the first distance (A) is 0.6 times to 0.7 times, in particular approximately 0.65 times, the second distance (B). - Cutting tooth according to claim 1,
characterised in that the countersink (30) has a length (S), measured in the running direction, which corresponds to 70% to 90% of a section length of the upper edge (31) which extends between the chippings recess (5) and the rear closing edge (38), in the running direction, of the base body (2). - Cutting tooth according to claim 4,
characterised in that the countersink (30) has an end which lies facing away from the depth limiter (4) and forms a stop (10), against which the roof section (6) of the cutting element (3) lies and is supported counter to the running direction. - Cutting tooth according to claim 4 or 5,
characterised in that the rear end of the cutting element (3) in the running direction ends after the rear rivet hole (12). - Cutting tooth according to claim 1,
characterised in that the length (Lmax), measured in the running direction, of the cutting element (3) is 70% to 100% of the rivet distance (N) of the middle axes (M1, M2) of the rivet openings (11, 12) from each other, in particular 90% of the rivet distance (N). - Cutting tooth according to claim 7,
characterised in that the ratio of a maximum height (Hmax), measured perpendicular to the running direction, of the cutting element (3) to a maximum length (Lmax), measured in the running direction, of the cutting element (3) is in the range of from 0.4 to 0.5, in particular being 0.46. - Cutting tooth according to claim 1,
characterised in that the side section (7) has a lower longitudinal edge (14) extending in the running direction and lying facing towards the rivet openings (11, 12), the lower longitudinal edge (14) extending over the length (Lmax) of the cutting element (3) and lying at an angle (23) of 0.5° to 2° to the reference plane (H) through the middle axes (M1, M2) of the rivet openings (11, 12). - Cutting tooth according to claim 1,
characterised in that the distance (E) between the middle axis (M2) of the rear rivet opening (12), following in the running direction, and the corner point (8) in the chippings recess (5) is 85% to 110% of the rivet distance (N), measured in the running direction, of the middle axes (M1, M2) of the rivet openings (11, 12), in particular being 95% of the rivet distance (N). - Cutting tooth according to claim 10,
characterised in that the distance line (20) between the middle axis (M2) of the rear rivet opening (12) and the corner point (8) in the chippings recess (5) with the reference plane (H) is at an angle (23) of between 35° and 40°, in particular an angle (23) of 37°. - Cutting tooth according to one of claims 1 to 11,
characterised in that the depth limiter (4) is formed in one part with the base body (2) as a support flange (34) bent away from the base body (2). - Cutting tooth according to one of claims 1 to 11,
characterised in that the base body (2) is a flat plate (22). - Cutting tooth according to claim 13,
characterised in that the depth limiter (4) is angled away out of the plate (22).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013021170.0A DE102013021170A1 (en) | 2013-12-14 | 2013-12-14 | Cutting tooth for a saw chain |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2883669A1 EP2883669A1 (en) | 2015-06-17 |
EP2883669B1 true EP2883669B1 (en) | 2016-06-01 |
Family
ID=52020900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14004127.8A Active EP2883669B1 (en) | 2013-12-14 | 2014-12-06 | Cutting tooth for a saw chain |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150183124A1 (en) |
EP (1) | EP2883669B1 (en) |
CN (1) | CN104708676B (en) |
DE (1) | DE102013021170A1 (en) |
RU (1) | RU2668573C2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106945128B (en) * | 2017-03-28 | 2019-12-24 | 张南征 | Cutting blade for a saw chain and saw chain |
US11007589B2 (en) * | 2017-04-20 | 2021-05-18 | Andreas Stihl Ag & Co. Kg | File for filing the cutting tooth of a saw chain |
PT3392007T (en) * | 2017-04-20 | 2022-06-27 | Stihl Ag & Co Kg Andreas | Cutting member of a saw chain, saw chain having a cutting member and file for filing the cutting teeth of a saw chain |
USD828417S1 (en) * | 2017-05-04 | 2018-09-11 | David L. Stubbs | Chainsaw clearing tooth |
USD842910S1 (en) * | 2018-03-14 | 2019-03-12 | Blount, Inc. | Cutter for saw chain |
DE102018125464B4 (en) * | 2018-10-15 | 2022-09-29 | PiKa GbR (Vertretungsberechtigter Gesellschafter: Markus Pittroff, 91278 Pottenstein) | Saw chain for working wood and plastic and method for manufacturing a saw link |
SE543860C2 (en) * | 2019-10-17 | 2021-08-17 | Husqvarna Ab | A chainsaw cutting link, a saw chain, a method of manufacturing a cutting link, and use of a cutting link |
CN115302588A (en) * | 2022-09-04 | 2022-11-08 | 浙江卡贝士机械有限公司 | Saw chain |
Family Cites Families (23)
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US2774396A (en) * | 1951-02-19 | 1956-12-18 | Borg Warner | Saw chain, tooth therefor and method of cutting |
US2928440A (en) * | 1957-05-10 | 1960-03-15 | Carl I Fors | Chain saw blade |
US2912020A (en) * | 1958-01-13 | 1959-11-10 | Draper Corp | Saw chain |
US2930417A (en) * | 1958-02-24 | 1960-03-29 | Draper Corp | Saw chain |
US3176733A (en) * | 1963-05-13 | 1965-04-06 | Partner Ab | Saw chains |
US3528465A (en) * | 1965-06-01 | 1970-09-15 | Herbert A Omley | Saw with ceramic cutting bodies |
DE1528033A1 (en) * | 1966-11-25 | 1969-12-11 | Stihl Maschf Andreas | Cutting tooth link |
US3467155A (en) * | 1967-09-11 | 1969-09-16 | Washington Chain Of Spokane In | Chain saw tooth |
US3519039A (en) * | 1968-01-31 | 1970-07-07 | Mcculloch Corp | Chain saw cutter link |
SE325699B (en) * | 1968-04-02 | 1970-07-06 | Sandvikens Jernverks Ab | |
US3854363A (en) * | 1969-03-31 | 1974-12-17 | Sandvik Ab | Chain saw unit |
SU471096A1 (en) * | 1970-12-15 | 1975-05-25 | Северное Отделение Полярного Научно-Исследовательского И Проектного Института Морского Рыбного Хозяйства И Океанографии Им.Н.М.Книповича | Chain saw |
DE3225317A1 (en) * | 1982-07-07 | 1984-01-19 | Fa. Andreas Stihl, 7050 Waiblingen | CUTTING LINK FOR A SAW CHAIN OF A MOTOR CHAIN SAW |
DE3804954C2 (en) * | 1988-02-18 | 1997-04-03 | Stihl Maschf Andreas | Saw chain for chainsaws |
CN2041241U (en) * | 1988-07-30 | 1989-07-19 | 董宇尘 | Universal saw chain for high-speed gearshaping |
SE514607C2 (en) * | 1998-02-11 | 2001-03-19 | Rolf Gustafsson | Cutting link to saw chain |
DE19844245B4 (en) * | 1998-09-26 | 2009-09-24 | Andreas Stihl Ag & Co. | Saw chain for a chainsaw |
CN2427304Y (en) * | 2000-06-29 | 2001-04-25 | 展钰良 | Cutting teeth chair blade of saw chain |
DE10209680B4 (en) * | 2002-03-05 | 2011-07-21 | Andreas Stihl AG & Co., 71336 | saw chain |
WO2004113035A2 (en) * | 2003-06-20 | 2004-12-29 | William Waytenick | Wood cutting saw chain and replaceable cutting members |
US7836808B2 (en) * | 2006-01-23 | 2010-11-23 | Szymanski David A | Safety chain and rotational devices and replaceable teeth therefor |
DE102007050778A1 (en) | 2007-10-24 | 2009-04-30 | Andreas Stihl Ag & Co. Kg | Cutting member for a saw chain |
CN103331487B (en) * | 2013-07-17 | 2016-05-11 | 缙云县鼎盛工刃具制造厂 | Hard alloy saw chain |
-
2013
- 2013-12-14 DE DE102013021170.0A patent/DE102013021170A1/en not_active Withdrawn
-
2014
- 2014-12-05 US US14/561,545 patent/US20150183124A1/en not_active Abandoned
- 2014-12-06 EP EP14004127.8A patent/EP2883669B1/en active Active
- 2014-12-10 RU RU2014149678A patent/RU2668573C2/en active
- 2014-12-12 CN CN201410760499.6A patent/CN104708676B/en active Active
Also Published As
Publication number | Publication date |
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RU2668573C2 (en) | 2018-10-02 |
RU2014149678A (en) | 2016-07-10 |
RU2014149678A3 (en) | 2018-07-31 |
CN104708676B (en) | 2019-11-15 |
US20150183124A1 (en) | 2015-07-02 |
CN104708676A (en) | 2015-06-17 |
DE102013021170A1 (en) | 2015-06-18 |
EP2883669A1 (en) | 2015-06-17 |
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