EP2213429A1 - Chaîne de scie et scie à chaîne en étant équipée - Google Patents

Chaîne de scie et scie à chaîne en étant équipée Download PDF

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Publication number
EP2213429A1
EP2213429A1 EP10000908A EP10000908A EP2213429A1 EP 2213429 A1 EP2213429 A1 EP 2213429A1 EP 10000908 A EP10000908 A EP 10000908A EP 10000908 A EP10000908 A EP 10000908A EP 2213429 A1 EP2213429 A1 EP 2213429A1
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EP
European Patent Office
Prior art keywords
cutting
saw chain
saw
chain
members
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.)
Withdrawn
Application number
EP10000908A
Other languages
German (de)
English (en)
Inventor
Manfred Kirchner
David Ryger
Kvetoslav Hlavka
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.)
Festool GmbH
Original Assignee
Protool GmbH
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 Protool GmbH filed Critical Protool GmbH
Publication of EP2213429A1 publication Critical patent/EP2213429A1/fr
Withdrawn legal-status Critical Current

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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
    • B27B33/142—Cutter elements

Definitions

  • the invention relates to a saw chain for a chain saw, in particular a sword saw, provided with a provided for driving by a pinion of the chainsaw drive side and provided for cutting workpieces, the drive side opposite cutting side, pivotally connected by axle pieces about mutually parallel pivot axes, lined up Chain links each comprising at least one extending between the drive side and the cutting side plate member, wherein at least a part of the chain links are designed as cutting members having on the cutting side in front of a top of the saw chain protruding cutting body with cutting edges for cutting the workpieces.
  • the invention further relates to a chain saw equipped with such a saw chain.
  • Typical saw chains have chain links sequentially arranged in a row direction, namely drive links that transmit the drive force from the pinion of the chain saw to the saw chain, cutting members provided for cutting the wood, and links therebetween which hingedly connect drive links and cutters.
  • the respective chain links are pivotable about mutually parallel pivot axes, for which corresponding axle pieces are pivotally articulated to the plate parts of the respective chain links.
  • the cutting surfaces of the cutting members extend for an optimal cutting of wood substantially transversely to the row direction of the saw chain to saw a saw chain corresponding to the wide groove in the wood.
  • a saw chain is for example off DE 695 25 076 T2 known.
  • the cutting edges of the cutting body thus extend substantially parallel to the plate planes or in the plate planes.
  • the pivot axes are perpendicular to the slab planes of the respective slab parts connected by the axle pieces.
  • the cutting edges are effective in the working direction of the saw chain.
  • the cutting edges do not substantially or exactly parallel to the pivot axes in the workpiece, but substantially at right angles thereto. This makes exact cuts in soft workpieces, such as wood fiber boards readily possible.
  • An advantageous embodiment of the invention provides that the cutting edges extend exclusively at right angles to the pivot axes of the axle pieces.
  • the cutting edges extend exclusively parallel to the plate planes, provided that these or at least their section having the cutting edges are in turn perpendicular to the pivot axes.
  • the one or more cutting bodies expediently have a blade or form one which projects upwards in front of the upper side of the saw chain.
  • the blade is advantageously designed in the manner of a knife blade, i. relatively thin, which makes exact cuts possible.
  • At least one cutting edge expediently all cutting edges of a respective saw chain, have a curved, for example arcuate course.
  • a arcuate in a first embodiment below described course about semicircular.
  • At least one cutting body expediently has a reinforcing bead or reinforcing curvature.
  • the bead or reinforcing curvature expediently extends substantially in the row direction of the saw chain, i. from the preceding chain link, in the direction of the following chain link with respect to the cutting body.
  • the reinforcing curvature or the bead can cause the cutting edge, at least in the region of the bead, is not exactly perpendicular to the pivot axes of the axle pieces, but has a particular only slightly inclined skew. It is preferred if a section of the cutting edge extending to the free side of the saw chain, in particular above the aforementioned reinforcing bead or reinforcing curvature, runs at least substantially, preferably exactly or nearly exactly perpendicular to the pivot axes of the axle pieces.
  • the aforementioned embodiment of the cutting body as a blade or the blade-like configuration of the cutting edge contributes.
  • a transverse distance may be present between the cutting bodies - also successive cutting members - in the region of a transverse center (with respect to the pivot axes or with respect to the row direction of the saw chain). In this transverse distance would remain to be sawn workpiece or material of the workpiece to be sawn.
  • This arrangement can be achieved, for example, in that cutting-plate parts of two cutting elements arranged one behind the other on the same transverse side of the saw chain in the row direction of the saw chain are alternately inclined in the direction of a transverse center and in the direction of a transverse outside transverse to the row direction of the saw chain.
  • the workpiece is sawed in the region of the transverse center.
  • the workpiece is sawed in the entire width or transverse width of the saw chain as possible.
  • a particularly preferred embodiment of the invention provides that the saw chain displaces the workpiece in the region of the kerf, so to speak, transversely outwards.
  • This measure can be achieved, for example, by virtue of the fact that at least one cutting body has a guide surface extending from a region of the transverse center to a transverse outer side of the saw chain with respect to the pivot axes, with which the workpiece to be sawn or also the chip material which has been sawed out, in the direction of Transverse outside of the saw chain is displaced.
  • the transverse center or transverse outside are on the pivot axes or on the row direction of the saw chain based.
  • the cutting bodies have a curvature leading to the outside.
  • the cutting bodies are spoiler-like inclined, so that they displace the workpiece or the chip material to the transverse outside.
  • the guide surfaces are formed so that they not only displace the workpiece or chip material to the transverse outside, but at the same time cause a feed of the saw chain in the cutting direction.
  • baffles By a curvature or bead-like design of these baffles a stiffening of the cutting body or cutting blade is effected at the same time.
  • At least a portion of a cutting edge expediently extends longitudinally between chain links adjacent to the respective cutting element and protrudes upward in front of the upper side of the saw chain. This can of course apply to all cutting bodies of all cutting elements.
  • At least sections of a cutting edge can be directed to the next in the pulling direction during operation of the saw chain chain link or against the pulling direction, so to speak directed towards the rear chain link out.
  • At least one cutting edge expediently extends from one longitudinal end to the other longitudinal end of the respective cutting member.
  • the cutting edge can for example be rectilinear.
  • At least one cutting body is expediently formed by a cutting plate part of the respective cutting member which is articulatedly connected to an axle piece or is arranged on this cutting plate part.
  • the cutting plate part in turn is suitably pivotally or rotatably connected to a respective axle piece and thus connected to the following chain link, for example a drive member or particularly preferably, a connecting member.
  • the cutting-plate part is advantageously a non-cutting plate member opposite the respective cutting member.
  • the cutless plate part is, for example, a plate part, which is otherwise also used in connection members.
  • the cutting plate parts of two, in particular in the row direction of the saw chain successively arranged chain links or cutting members are advantageously on opposite sides of the respective cutting-free plate parts, so that between the successive cutting plate parts a transverse distance is transverse to the row direction of the saw chain. As a result, a cut is sawn approximately corresponding to a transverse width of the saw chain in the workpiece. This measure allows very precise cuts.
  • the cutting members are expediently arranged between drive members.
  • two drive members connected by cutting-free connecting members are expediently arranged, so that not every chain link is a cutting member.
  • the invention further comprises a chain saw, more preferably a sword saw, which is equipped with a saw chain according to the invention.
  • a chainsaw 10 is configured as a sword saw 11.
  • the sword saw 11 has a guide sheet 13 projecting downwardly in front of a guide plate 12 for guiding a saw chain 14a, which is shown only schematically in a lower, curved deflection portion of the guide sheet 13, but in the substantially rectilinear portions in the detailed drawings FIGS. 2a, 2b equivalent.
  • the guide sheet 13 is for example a so-called sword.
  • the guide plate 12 may also be referred to as a saw table, which is suitable for placement on a schematically illustrated workpiece 15.
  • the guide plate 12 is pivotable with respect to a housing 16 of the chain saw 10, for which adjustment means 17 are provided.
  • the sword saw 11 also obliquely inclined, exact cuts in the workpiece 15 and at the same time is easy to handle.
  • a drive 18 is arranged, preferably an electric motor, which drives the saw chain 14a via a drive wheel 19 or drive pinion.
  • a saw chain according to the invention for example, the saw chain 14a are used in other chainsaws, even those that have no guide plate or a guide table.
  • An operator may conveniently grasp the chainsaw on a front or rear handle 20, 21 disposed on the guide plate 12, and also on a handle 22 of the housing 16 on which an operating switch 23 is arranged to turn the drive 18 on and off.
  • the operator can easily guide the chain saw 10 in the working direction A (indicated by an arrow).
  • a chain guard 24 is still arranged, which runs behind the guide sheet 13 and below it.
  • the saw chain 14a like the saw chain 14b, 14c, 14d and 14f, which can be used as an alternative to the chain saw 10, has chain links 25 arranged behind one another in a row direction R, each of which is pivotally connected to one another by axle pieces 26.
  • the chain links in each of the saw chains 14a-14e comprise drive links 27, links 28 and individually configured cutters 29a, 29b, 29c, 29d and 29f.
  • the axle pieces 26 penetrate drive plate parts 30 of the drive members 27, connecting plate parts 31 and the connecting members 28 and cutting plate parts 32 a - 32 e of Cutting members 29a - 29e, the non-cutting plate portions 33 of the cutting members 29a - 29c opposite.
  • the axle pieces each penetrate holes provided on the plate parts 30 - 33, which, however, are only visible in the drive plate parts 30.
  • the drive plate members 30 have downwardly in front of a bottom 35 of the saw chains 14a - 14e protruding projections 36, which are provided in particular for entrainment of oil.
  • the underside 35 is at the same time also a drive side 37, on which the drive wheel 19 engages in the saw chain 14a, 14b, 14c, 14d or 14e.
  • the drive side 37 is opposed to a cutting side 38 of the saw chain 14a-14e projecting on the cutting body 39a - 39e in front of a top 40 of the saw chain 14a - 14f.
  • a connecting member 28 is arranged in each case, while the cutting members 29d are each coupled directly successively by drive plate parts 30 with each other.
  • a connecting member 28 each connects two drive members 27.
  • the cutting members 29a, 29c connect two drive members 27 in the manner of the connecting members 28.
  • two successive cutting members 29a or 29b or 29c each have a connecting member 28 and two drive members 27 are arranged.
  • a cut-free connecting member 28 is arranged between two respective cutting members 29a, 29b and 29c so a cut-free connecting member 28 is arranged.
  • non-cutting plate parts 33 have the same shape and the same shape as the connecting plate parts, which are also cut-free 31, so that following a common part principle is given a simple construction.
  • the cutting bodies 39a-39c, 39e are arranged alternately once on the left side and once on the right side one after the other with respect to the row direction R, with one respective cutting plate part 33 facing the cutting bodies 39a, 39b and 39c.
  • a cutting body 39a, 39b, 39c or 39e is alternately present on the outside of the saw chain 14a, 14b or 14c, as it were.
  • a respective cutting member in the row direction R between the respective cutting bodies 39a-39e, larger distances could also be present, i.
  • a plurality of cut-free connecting members 28 may be arranged.
  • a respective cutting member it is possible for a respective cutting member to have only a single, for example, central cutting plate part. One can imagine this so that, for example, protrudes upward in front of the drive plate parts 30 each have a cutting body.
  • a further variant is when, for example, two cutting bodies 39a-39a, 39b-39b or 39c-39c are arranged opposite one another on one and the same cutting member.
  • a pairwise cut is carried out, so to speak, parallel to the longitudinal direction or row direction R of the respective saw chain.
  • a feed rate of the chain saw 10 when cutting especially particularly soft workpieces 15 can be increased.
  • the cutting edges 41a, 41b extend at right angles to pivot axes 42 of the axle pieces 26.
  • the cutting edges 41 c, 41 d and 41 e of the saw chains 14 c - 14 e are not quite, but substantially perpendicular to the pivot axes 42, because the cutting body 39 c - 39 e have a reinforcing bead 43. In any case, the largest part of the cutting edge 41 c is perpendicular to the respective pivot axis 42.
  • the pivot axes 42 in turn are perpendicular to plate planes 44 of the plate parts 30-32, at least where the axle pieces 26 penetrate the respective plate parts 30-33.
  • the cutting edges 41a-41e extend in a different formulation substantially parallel or exactly parallel (41a, 41b) to the plate planes 44th
  • the cutting bodies 39a, 39b form blades projecting upwardly in front of the upper surface 40 of the saw chains 14a or 14b.
  • the two saw chains 14a, 14b are equipped with knife-like or knife blade-like cutting bodies 39a, 39b.
  • the cutting edges 41a, 41b and 41c each have sections 45 which are directed to the next in the pulling direction Z during operation of the saw chain 14a-14e chain link 25.
  • the cutting edges 41a, 41b also extend transversely between respectively adjacent chain links 25 and protrude upwards in front of the upper side 40 of the respective saw chain 14a, 14b.
  • a portion 46 of the cutting edge 41a or 41b directed upward.
  • the saw chain 14a or 14b cuts forward with respect to the working direction A into the workpiece 15, which increases the working speed with simultaneous precise cutting.
  • the cutting edges 41a and 41b additionally have sections 47 which are directed towards the chain link 25 next to the pulling direction Z during operation of the saw chain 14a, 14b.
  • the cutting edges 41a have a continuously linear course, namely in the present case a curved course
  • the cutting edges 41b are polygonal, in the exemplary embodiment trapezoidal.
  • the upper cutting edges 41a, 41c extend in each case from the longitudinal longitudinal end 51 in the pulling direction Z to the longitudinal end 52 of the respective cutting element 29a, 29b which is rearward in the pulling direction Z.
  • the cutting bodies 39a project semicircularly upward in front of the upper side 40 of the saw chain 14a.
  • the cutting edges 41b with their trapezoidal shape project in the form of trapezoids upwards in front of the upper side 40 of the saw chain 14b.
  • the sections 45 and 47 are inclined with respect to the pulling direction Z and counter thereto.
  • the portions 45 of the cutting edges 41 c of the saw chain 14 c are inclined, wherein the inclined slope of the preceding chain link 25 extends away.
  • the reinforcing beads 43 also run obliquely, namely obliquely with respect to a plane in which the pivot axes 42 of a respective cutting plate part 32c extend.
  • the oblique inclination is such that the reinforcing bead 43 extends from the top 40 forth obliquely down closer to the pivot axis 42, above which arranged the reinforcing bead 43 is.
  • the cutting bodies 39c extend substantially above the rearward in the pulling direction Z pivot axis 42 and the rear axle piece 26 in front of the upper side 40 back.
  • the cutting edges 41c thus extend obliquely inclined relative to the plate planes 44 or not exactly perpendicular to the pivot axes 42.
  • the largest, upwardly projecting portion of the cutting edges 41c namely a portion 48, at right angles the pivot axes 42 extends. Since substantially the portions 48 project furthest up in front of the top 40, the sections 48 during operation of the saw chain 14c, so to speak, the effective cutting edge portions, while the lower lying, partially with respect to the pivot axes 42 obliquely inclined portions 53 which in the Reinforcement beads 43 extend when cutting the workpiece 15 are not or only slightly effective.
  • the cutting bodies 39c are dull, ie upper portions 49 and rear portions 50 facing the chain link 25 in the direction of pull Z have no cutting edge or cutting property.
  • the upper portions 49 are inclined to the in the sense of the reinforcing beads 43 obliquely, in this case even parallel thereto. This ensures that essentially the cutting edges 41c are in engagement with the workpiece 15, while the upper and rear portions 49, 50 of the cutting bodies 39c run, as it were, in the region cut free by the cutting edge 41c during operation of the saw chain 14c and thus with the workpiece 14 are not engaged.
  • the cutting edges 41a-41e extend substantially or even exclusively (41a, 41c) in a circumferential plane of the respective saw chain 14a-14e.
  • the cutting members 29d of the saw chain 14d substantially correspond to the cutting members 29c of the saw chain 14c, i. Among other things, they have a reinforcing curvature or bead 43. It can already be seen in the case of the saw chain 14c that the cutting bodies 39c are each inclined in the direction of a transverse outside 55a or 55b. Thus, an area of a transverse center 56 (with respect to the row direction R or the direction of longitudinal extension of the pivot axes 42) remains free.
  • the cutting bodies 39d of the cutting members 29d are inclined once to the transverse outer side 55a (cutting members 60a, 60c) and once toward a transverse center 56 (cutting members 60b, 60d).
  • the cutting members 60b, 60d thus saw off the transverse center 56, so to speak, while the cutters 60a, 60c inclined or oriented towards the transverse outer sides 55a, 55b "clear” or "cut free” the transverse outer sides 55a, 55b.
  • the cutting members 60a, 60c are inclined so that they project up to the heads or longitudinal ends of the axle 26, at least in the area thereof, so that the longitudinal ends of the axle 26 along the saw cut in the workpiece 15 are substantially freely feasible.
  • FIG. 5c Frontal view
  • the cutting plate parts 32d of the cutting members 60a-60d are arranged side by side in the transverse direction of the saw chain 14d, ie parallel to the pivot axes 42, so to speak over the entire transverse width the saw chain 14d can perform a saw cut in the workpiece 15.
  • the arrangement of the saw chain 14d is made such that in each case two cutting members 60a, 60b or 60c, 60d are arranged one behind the other in the region of the same transverse outer side 55a or 55b. This means that a saw cut is done alternately once on the left side and once on the right side of the transverse center 56.
  • the cutting members 60a-60d thus have a kind of entanglement with respect to the transverse direction or with respect to the axial direction of the pivot axes 42.
  • the cutting members 60a and 60 on the one hand and the cutting members 60b and 60c on the other hand each have identical cutting plate parts 32d.
  • the cutting edges 41e of the cutting bodies 39e are arranged in the region of the transverse center 56 of the saw chain 14d.
  • the free end portions 71 of the cutting edges 41e are arranged approximately in the region of the transverse center 56.
  • the cutting edges 41e are advantageously even aligned with each other with respect to the row direction, which is optional.
  • the lower, in the direction of the axle pieces 56 extending portions of the cutting edges 41e extend to the transverse outer sides 55a, 55b out. This is achieved by that the cutting bodies 39e are bent or bent, as it were, in the direction of the transverse center 56, ie are inclined with their free end areas or upper sides toward the transverse center 56.
  • This curvature which has the nature of a reinforcing bead 43 or reinforcing curvature, causes reinforcement of the cutting bodies 39e so that they wear little in use.
  • guide surfaces 72 are advantageously provided, which serve for chip removal or for displacing the workpiece 15 in the direction of the transverse outer side 55a, 55b.
  • the guide surfaces 72 extend from the cutting edge 41e inclined obliquely towards the transverse center 56 in the row direction R or pulling direction Z to the rear, where they terminate in the direction of the transverse outer sides 55a or 55b.
  • the cutting members 29e are referred to once as a cutting member 70a and once as a cutting member 70b in the drawing, indicating that the cutting members 70a and 70b with their respective vanes 72 are right-once and left-hand (referring to front view Fig. 6c ) run transversely-outwards.
  • the cutting members 70a, 70b are as it were entangled, however, so that they perform a saw cut approximately in the region of the transverse center 56, to the transverse outer sides 55a, 55b, however, outwardly extending side surfaces, namely the guide surfaces 72, have.
  • a relatively narrow saw cut is achieved, which even particularly narrow fails due to the blade-like design of the cutting edges 41e.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
EP10000908A 2009-02-03 2010-01-29 Chaîne de scie et scie à chaîne en étant équipée Withdrawn EP2213429A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910007187 DE102009007187A1 (de) 2009-02-03 2009-02-03 Sägekette und damit ausgestattete Kettensäge

Publications (1)

Publication Number Publication Date
EP2213429A1 true EP2213429A1 (fr) 2010-08-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10000908A Withdrawn EP2213429A1 (fr) 2009-02-03 2010-01-29 Chaîne de scie et scie à chaîne en étant équipée

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EP (1) EP2213429A1 (fr)
DE (1) DE102009007187A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118332A1 (de) 2017-08-11 2019-02-14 Festool Gmbh Schneidwerkzeug für eine Hand-Werkzeugmaschine und Hand-Werkzeugmaschine mit einem Schneidwerkzeug
DE102018102855A1 (de) * 2017-08-11 2019-02-14 Festool Gmbh Hand-Werkzeugmaschine mit einem Absauganschluss

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1104456A (fr) * 1954-05-06 1955-11-21 Scie à maillons articulés
DE1728318A1 (de) * 1967-10-09 1972-03-30 Hans Schmid Schneidekette mit Messerlaschen und Verwendung derselben
US3989076A (en) * 1975-02-18 1976-11-02 Pacific Saw And Knife Company Pulp chip forming crosscut saws
DE2801162A1 (de) * 1978-01-12 1979-07-19 Horst Hartmann Haushalt-schneidgeraet
FR2500357A1 (fr) * 1981-02-24 1982-08-27 Sidec Plaquette-outil adaptable sur une
US4576078A (en) * 1983-06-10 1986-03-18 Kolve Gerald C Reinforced saw chain tooth
JPS61138504U (fr) * 1985-02-19 1986-08-28
DE69525076T2 (de) 1994-11-14 2002-10-31 Blount Inc Sägekettenschneidglied mit abgewinkelten Schneidtiefenbegrenzer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1098186B (de) * 1957-06-11 1961-01-26 Andreas Stihl Saegekette fuer Motorkettensaegen
DE9402520U1 (de) * 1994-02-16 1994-09-15 Junker Michael Futterschneidkette für Kettensäge

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1104456A (fr) * 1954-05-06 1955-11-21 Scie à maillons articulés
DE1728318A1 (de) * 1967-10-09 1972-03-30 Hans Schmid Schneidekette mit Messerlaschen und Verwendung derselben
US3989076A (en) * 1975-02-18 1976-11-02 Pacific Saw And Knife Company Pulp chip forming crosscut saws
DE2801162A1 (de) * 1978-01-12 1979-07-19 Horst Hartmann Haushalt-schneidgeraet
FR2500357A1 (fr) * 1981-02-24 1982-08-27 Sidec Plaquette-outil adaptable sur une
US4576078A (en) * 1983-06-10 1986-03-18 Kolve Gerald C Reinforced saw chain tooth
JPS61138504U (fr) * 1985-02-19 1986-08-28
DE69525076T2 (de) 1994-11-14 2002-10-31 Blount Inc Sägekettenschneidglied mit abgewinkelten Schneidtiefenbegrenzer

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