EP0698459B1 - Zerspanerwerkzeug - Google Patents

Zerspanerwerkzeug Download PDF

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Publication number
EP0698459B1
EP0698459B1 EP95109392A EP95109392A EP0698459B1 EP 0698459 B1 EP0698459 B1 EP 0698459B1 EP 95109392 A EP95109392 A EP 95109392A EP 95109392 A EP95109392 A EP 95109392A EP 0698459 B1 EP0698459 B1 EP 0698459B1
Authority
EP
European Patent Office
Prior art keywords
cutting edge
tool
angle
chipping tool
radial plane
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.)
Expired - Lifetime
Application number
EP95109392A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0698459A2 (de
EP0698459A3 (zh
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.)
Dietz Hans Prof Dr
Original Assignee
Dietz Hans Prof Dr
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 Dietz Hans Prof Dr filed Critical Dietz Hans Prof Dr
Publication of EP0698459A2 publication Critical patent/EP0698459A2/de
Publication of EP0698459A3 publication Critical patent/EP0698459A3/xx
Application granted granted Critical
Publication of EP0698459B1 publication Critical patent/EP0698459B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/007—Combined with manufacturing a workpiece
    • 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
    • B27B33/20—Edge trimming saw blades or tools combined with means to disintegrate waste

Definitions

  • the invention relates to a chipping tool, in particular for Machining tree trunks with a conical support body, whose surface is equipped with cleavers, the Chopping knife along several to one axis of the chipping tool concentric spirals arranged on the surface are and have a major cutting edge and a minor cutting edge, and further the main cutting edge in a radial plane Axis and the minor cutting edge in an inclined to the radial plane Lie level and are movable in a cutting direction.
  • a chipping tool of the type mentioned above is from the DE-PS 31 14 332 known.
  • the known cutting tool is a so-called profile cutting tool, like it was still flattening from the side completely or partially untreated tree trunks are used.
  • the known profile chipper tool has an axis rotating tool head, which is provided with chopping knives.
  • the chopping knives have blades that are used to produce wood chips and for side processing of a tree trunk or log protrude over the conical surface of the tool.
  • that is known profile chipper tool with a circular saw blade provided that on a face of the log facing the Tool head is arranged coaxially to the axis. The circular saw blade is used for side surface processing of the log.
  • the well-known profile chipper tool chops using the cleaver Wood chips from the side areas of the tree trunk or Logs out while at the front of the tool arranged saw blade for finishing the flattened sides serves.
  • the cleaver with their Main cutting edge aligned perpendicular to the cutting direction.
  • the Main blades loosen the wood chips along its broad side from the processed wood of the log, while the minor cutting edge serves the wood chips worked out in this way to separate laterally.
  • cleaver From DE-OS 24 00 810 is finally a tool holder known for cleaver, which also has a conical surface having. Along a spiral line on the conical Surface are milled into these saddles, in which cleaver can be attached. Some of the cleavers protrude the periphery of the tapered carrier over and are circumferential of the tool inclined forward in the direction of rotation. The main cutting edge is thus located in this known tool in the axial direction, so that there is a risk that curved grooves on the machined surface of the log arise.
  • the invention has for its object a cutting tool of the type mentioned to the extent that the Surface of the processed log is further improved.
  • This object is achieved in that the Main cutting edge opposite a perpendicular to the cutting direction is advanced by a first, acute angle.
  • the object underlying the invention is achieved in this way completely solved, because with the mentioned cutting edge geometry all fibers of the wood are gripped in an oblique cut and be cut in an oblique direction.
  • the leading side the main cutting edge takes on the function of a hold-down device or pressure bar. It prevents fibers from subsequent cutting part is pulled out of the solid material will.
  • the leading part of the main cutting edge also ensures that the chip to be lifted on the downstream in the feed direction Corner of the cutting edge is deflected more than at the upstream. This type of change of direction creates a chip twisted about its longitudinal axis, which is only small Outbreaks created in the wood.
  • the first angles between 10 ° and 40 °, preferably between 30 ° and 35 °.
  • the second angle is between 0 ° and 30 °, preferably between 10 ° and 20 °.
  • the main cutting edge forms an edge of a first sloping roof of the cleaver, which in the radial plane.
  • This measure has the advantage of being a stable tool arises in which the friction losses and thus the heat development is kept low because the flat first roof slope when rotating the tool always a distance from Steady wood adheres as the main cutting edge runs along moving on a curved surface.
  • the Invention the minor cutting edge of an edge of a second roof slope of the cleaver that lies in the inclined plane.
  • the chopping knives comprise a flange, on which the sloping ceilings are molded in one piece.
  • This measure has the advantage that it is particularly stable Tool is created that practically does not have its own deformations subject to.
  • This measure has the advantage that on the one hand flat area of the flange for fastening the chopping knife is available, but on the other hand the mechanically highly stressed Part of the chopping knife designed accordingly compact can be.
  • the radial plane with the inclined plane includes a third angle that is between 110 ° and 140 °, preferably between 125 ° and 135 °.
  • cleaver is inclined on the support body
  • Fastening surfaces are arranged around the radial plane a fourth, acute angle is made between 30 ° and 50 °, preferably between 35 ° and 45 °.
  • This measure has the advantage that the application of force by the cutting edges in the carrier body can be optimized because on the one hand the blades for the cleaver and on the other hand the Cleaver over the inclined mounting surfaces to the carrier body are employed and in this way essentially Pressure loads and no bending loads occur.
  • 10 overall designates a chipping tool, as it is preferably used for machining logs, in particular Tree trunks is used.
  • FIG. 1 shows the chipping tool 10 in pairs 10, 10 ', the chipping tools 10, 10' on opposite Sides of a tree trunk 11 are engaged. Of the Tree trunk 11 becomes relative in the direction of an arrow 12 to the spatially arranged cutting tools 10, 10 ' promoted.
  • the chipping tools 10, 10 are about a common axis 17 rotatable. For this purpose they are with appropriate waves 15 provided which are driven in the direction of an arrow 16.
  • the chipping tools 10 are on the outside with a provided approximately conical surface. On this surface there are spirals 20 which are equipped with chopping knives 21 are. As is known per se, several spiral tracks, for example three spiral tracks in a concentric arrangement be provided.
  • a hollow cone-shaped carrier body 40 points outwards on it facing side a conical surface 41.
  • recessed openings 42 which for Serve the cleaver 21 serve.
  • inclined mounting surfaces 43 are provided in the receiving openings 42.
  • each cleaver 21 comprises a flange 45, the flat portion of which is U-shaped with two legs 46 and an intermediate recess 47 is formed.
  • the cleaver 21 can be positively on the inclined mounting surfaces 43 in the receiving openings 42 are attached.
  • Each cleaver 21 has a main cutting edge 50 and one Minor cutting edge 51 provided. From Fig. 2 it is clear that the Main cutting edges 50 in a radial plane 52 to the axis 17 of the Cutting tool 10 lie. The minor cutting edges 51 lie in contrast, in a plane 53 inclined to the radial plane 52. With an arrow 54 in Figures 2a, 4a and 6 is the cutting direction of the cleaver 21 marked. 55 marks 4a a perpendicular to the cutting direction 54.
  • the flange 45 of each cleaver 21 has a front 60 and a rear side 61.
  • At the top of the flange 45 are a first roof slope 62 and a second roof slope 63 in one piece molded.
  • An edge 64 forms the transition between the first roof slope 62 and the front 60 of the flange 45.
  • a second edge 65 forms the transition between the second Roof slope 63 and the front 60.
  • a third edge 66 forms the transition between the sloping ceilings 62 and 63.
  • the roof slopes 62, 63 are thickened Area of the flange 45 through a projection 67 from the Back 61 is formed.
  • the chopping knives 21 are, as already mentioned, by their attachment on the inclined mounting surfaces 43 of the carrier body 40 inclined, as shown particularly clearly in FIG. 2a is recognizable.
  • the angle of inclination ⁇ taken to Radial plane 52 is between 30 ° and 50 °, preferably between 35 ° and 45 °.
  • first roof slope 62 with the front 60 same Includes angle ⁇ , as can be seen from Fig. 3, lies the first roof slope 62 in the installed state of the chopping knife 21 exactly in the radial plane 52, as shown in Fig. 2a.
  • the main cutting edge 50 is now pointed to the cutting direction Angle ⁇ made leading.
  • FIG. 4a therefore shows the upper part of the chopping knife 21 according to FIG Fig. 4 in a tilted by ⁇ in the plane of the drawing View, so that in the representation of Fig. 4a, the first Roof slope 62 lies exactly in the drawing plane. This fact is illustrated in Fig. 3 by view IVa-IVa.
  • the acute angle ⁇ can thus be seen from FIG. 4a, below the main cutting edge opposite the perpendicular 55 to the cutting direction 54 is employed prematurely.
  • the angle ⁇ lies between 10 ° and 40 °, preferably between 30 ° and 35 °.
  • Fig. 4a From Fig. 4a it can also be seen that the minor cutting edge 51 by an acute angle ⁇ with respect to the vertical 55 Cutting direction 54 is set in advance.
  • the angle is in Fig. 4a designated ⁇ 'because in Fig. 4a the second Roof slope 63 is in turn tilted to the plane of the drawing, so that the angle ⁇ 'does not match the true angle ⁇ .
  • angle ⁇ is between 0 ° and 30 °, preferably it is between 10 ° and 20 °.
  • the angle ⁇ is also shown in FIGS. 4a and 6, which enclose the roof slopes 62, 63 with each other. Since the Representations of Figures 4a and 6 not in the direction of the third Edge 66 lie, the angles are designated with ⁇ 'since they are not agree with the exact geometric value ⁇ .
  • the angle ⁇ is between 110 ° and 140 °, preferably between 125 ° and 135 °.
  • the fibers of the wood become due to the leading employment the main cutting edge 50 is gripped in an oblique section and by severed left to right.
  • the left-hand side of the main cutting edge 50 in FIG. 4a takes over the function of a hold-down or pressure beam. You prevented that fibers from the subsequent right part of the main cutting edge 50 are pulled out of the solid material.
  • the reinforcement of the left due to the construction excellent main cutting edge 50 also ensures that the chip to be removed at the right corner of the main cutting edge 50 is deflected more than on the left. Through this type of Change of direction arises a twisted around its longitudinal axis Chip that only produces small breakouts in the wood.
EP95109392A 1994-08-23 1995-06-17 Zerspanerwerkzeug Expired - Lifetime EP0698459B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4429793A DE4429793C1 (de) 1994-08-23 1994-08-23 Zerspanerwerkzeug
DE4429793 1994-08-23

Publications (3)

Publication Number Publication Date
EP0698459A2 EP0698459A2 (de) 1996-02-28
EP0698459A3 EP0698459A3 (zh) 1996-03-27
EP0698459B1 true EP0698459B1 (de) 1998-04-22

Family

ID=6526294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109392A Expired - Lifetime EP0698459B1 (de) 1994-08-23 1995-06-17 Zerspanerwerkzeug

Country Status (5)

Country Link
EP (1) EP0698459B1 (zh)
AT (1) ATE165267T1 (zh)
DE (2) DE4429793C1 (zh)
FI (1) FI106106B (zh)
NO (1) NO301060B1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT2298U1 (de) * 1997-11-04 1998-08-25 Holzindustrie Preding Ges M B Vorrichtung zur herstellung von kantholz aus rundhölzern

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3330315A (en) * 1964-05-09 1967-07-11 Dominion Tar & Chemical Co Log reducer
DE2400810A1 (de) * 1974-01-09 1975-07-17 Boehl Gmbh Maschf Werkzeugtraeger fuer hackmesser
AT355792B (de) * 1977-08-05 1980-03-25 Lindner Werk Gmbh Vorrichtung zum abflachen von balken oder staemmen
DE3045107A1 (de) * 1980-11-29 1982-07-01 Wurster u. Dietz GmbH u. Co Maschinenfabrik, 7400 Tübingen Zerspanerwerkzeug
DE3114332A1 (de) * 1981-04-09 1982-11-04 Wurster u. Dietz GmbH u. Co Maschinenfabrik, 7400 Tübingen Profilzerspanerwerkzeug

Also Published As

Publication number Publication date
FI106106B (fi) 2000-11-30
EP0698459A2 (de) 1996-02-28
ATE165267T1 (de) 1998-05-15
FI953932A0 (fi) 1995-08-22
DE4429793C1 (de) 1995-06-22
NO301060B1 (no) 1997-09-08
EP0698459A3 (zh) 1996-03-27
DE59501972D1 (de) 1998-05-28
FI953932A (fi) 1996-02-24
NO953295D0 (no) 1995-08-22
NO953295L (no) 1996-02-26

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