EP0744255A2 - Dispositif pour découper des troncs d'arbres et tête de fraisage pour ce dispositif - Google Patents

Dispositif pour découper des troncs d'arbres et tête de fraisage pour ce dispositif Download PDF

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Publication number
EP0744255A2
EP0744255A2 EP96107714A EP96107714A EP0744255A2 EP 0744255 A2 EP0744255 A2 EP 0744255A2 EP 96107714 A EP96107714 A EP 96107714A EP 96107714 A EP96107714 A EP 96107714A EP 0744255 A2 EP0744255 A2 EP 0744255A2
Authority
EP
European Patent Office
Prior art keywords
chopping
knives
knife
ring
milling head
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.)
Granted
Application number
EP96107714A
Other languages
German (de)
English (en)
Other versions
EP0744255B1 (fr
EP0744255A3 (fr
Inventor
Hermann Gross
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.)
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Original Assignee
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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 Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik filed Critical Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Publication of EP0744255A2 publication Critical patent/EP0744255A2/fr
Publication of EP0744255A3 publication Critical patent/EP0744255A3/fr
Application granted granted Critical
Publication of EP0744255B1 publication Critical patent/EP0744255B1/fr
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 device for cutting logs into wood products according to the preamble of claim 1 and a milling head suitable for this.
  • a generic device is described for example in DE-C-29 28 949.
  • This device has i.a. Milling heads with chopping knives, the cutting edges of which produce a cylinder jacket when rotating and which therefore run parallel to the rotational axis of the head.
  • the milling heads are intended to cut out tree-edged corner areas from a tree trunk, which already delimit side boards on the trunk, which are then cut off using a separating saw.
  • step milling cutters can also be used as milling heads according to the cited document, with which two parallel corner folds can be milled out at the same time, which then delimit two side boards in a paired arrangement and are separated by means of separating strips.
  • the width and depth of the corner folds to be worked out is determined exclusively by the position of the milling head in relation to the tree trunk to be processed.
  • one of the corners to be milled can be determined by the depth of the tool, but the dimensions of the second corner are determined in relation to the first corner by the dimensions of the tool, ie by the dimensions of its chopping knife ring of smaller diameter.
  • the width and thickness of the narrower, outer side board regardless of the limitation of the wider, inner one Side board can be changed, so this is only possible with two separate milling heads working in series, each carrying a cleaver and the depth of immersion in the workpiece can be adjusted independently.
  • the invention has for its object to provide a device of the type mentioned that has two mirror-image milling heads for the narrow-sided limitation of side boards to be separated on one side of a tree trunk, each of which is adjustable so that the thickness and width of the outer side board to be separated independently are adjustable from the dimensions of the inner side board.
  • the cleaver knives must each be assigned finishing tools that can be reworked on the surface of the worked corner that is exposed from the side end of the cleaver and forms an angle with the cutting edges of the cleaver.
  • finishing tools that can be reworked on the surface of the worked corner that is exposed from the side end of the cleaver and forms an angle with the cutting edges of the cleaver.
  • the invention also relates to a step milling head for the claimed device, as described in claim 3 and in a special, further embodiment in the subclaims following claim 3.
  • the claimed device is to be described in the following with reference to an embodiment in which the cutter head pairs rotate about vertical shafts and the cutting edges of the chopping knives run essentially vertically and describe a cylinder jacket with a vertical axis.
  • the milling heads of a pair are essentially mirror images in the vertical direction and can therefore be driven by a common, vertical drive shaft.
  • a tree trunk to be processed moves horizontally through the device, so that the mutual spacing of the milling heads of a pair determines the width in the vertical direction of at least the wider of the two side boards to be delimited.
  • the immersion depth of the pair of milling heads in the horizontal direction determines the common thickness of both side boards. This immersion depth is generally adjustable in the horizontal direction of the entire tool unit carrying both milling heads and their drive. With a common drive shaft for a pair of milling heads, the mutual vertical spacing of the milling heads can be adjusted by their mutual displacement on the shaft.
  • the width of the inner, wider side board closer to the trunk axis and the thickness of both side boards to be limited are determined jointly by the depth of immersion of the milling heads in the tree trunk in vertical and horizontal directions.
  • the ratio in which the thickness of the entire side goods to be separated is divided into the thickness of the inner and outer side boards, determined by the difference in the rotational diameter of the chopping knife ring of larger diameter and the chopping knife ring of smaller diameter. Since the difference is important here, it is fundamentally possible to either change the rotation diameter of the chopping knife ring of larger diameter in relation to the rotation diameter of the chopping knife ring of smaller diameter or vice versa.
  • the immersion depth of the entire tool must of course be changed accordingly in the horizontal direction in order to remain at the same side fabric thickness.
  • the amount by which the outer board is narrower on each side than the inner side board is determined by the effective width of the cutting edges of the chopping knife ring of smaller diameter. This effective width is essentially the projection that the chopping knives of the smaller diameter ring have in the vertical direction over the vertical extent of the chopping knives of the larger diameter ring on one side.
  • This protrusion is kept variable according to the invention in order to vary the width of the outer side board relative to the inner side board in that the chopping knives of the ring of smaller diameter can be brought into different overlap with the chopping knives of the ring of larger diameter, whereby they have an effective width due to the area of this overlap lose, because in the overlap area the chopping knives of the wreath of larger diameter have a larger working radius, so that the knives of the wreath of smaller diameter do not come into effect here.
  • the adjustability of the chopping knives of a knife ring individually or overall compared to the other knife ring can be carried out in different ways.
  • One possible adjustability is by means of displaceability of the knives or their knife carriers along complementary, linear profiles and by mutual jamming by means of, for example, clamping screws in a certain position.
  • Such a design is suitable for manual knife adjustment.
  • adjusting means which can be operated remotely in the carrier body of the milling head, such as, for example, motor-driven eccentrics, spindle drives or other gears, but also hydraulic drives. Methods of supplying the required energy and the required signals via rotary unions on the drive shafts are available in the prior art.
  • the rotational diameter of the two chopping knives need only be changeable relative to one another offers the possibility of providing the adjustment of the mutual radial distance of the chopping knives from the axis of rotation on the chopping knives of the wreath of larger diameter, while for changing the effective width of the chopping knives of the wreath of smaller diameter, the adjustment of which is provided with respect to the carrier body, in that the chopping knives of the ring of larger diameter are then arranged immovably in the axial direction.
  • the chopping knives of the ring of smaller diameter can be arranged in a separate carrier element which, as a whole, is designed to be more or less submersible in the carrier body, so as to ensure that the axially protruding edges of the knife rings of smaller diameter over the ends of the cutting edges of the knife ring larger diameter to be able to change together.
  • a separate carrier element which, as a whole, is designed to be more or less submersible in the carrier body, so as to ensure that the axially protruding edges of the knife rings of smaller diameter over the ends of the cutting edges of the knife ring larger diameter to be able to change together.
  • Such an embodiment would be suitable, for example, for a hydraulic adjustment drive.
  • Additional fine machining tools can also be provided for the fine machining of one surface of the corner worked out by the chopping knife ring of smaller diameter. If the chopping knives of the ring of smaller diameter are also embedded in an essentially ring-shaped element, as is customary with the chopping knife ring of larger diameter, saw blade segments could also be used as finishing tools for the ring of smaller diameter. The restrictions regarding radial adjustability would also apply here.
  • finishing knives are provided as finishing tools, which are provided on the knife carriers for the chopping knives of the ring of smaller diameter, since with such an attachment they also carry out a radial adjustment of these chopping knives.
  • finishing knives are additional knives, the cutting edge of which essentially runs in a radial plane, that is to say in a plane that extends perpendicular to the knife edges of the cleaver.
  • the number of chopping knives preferably kept relatively small in a knife ring and generally consists of only two cleavers. This minimum number is to be observed simply for reasons of rotational symmetry and mass balancing.
  • a tree trunk 2 is shown in cross section, which is already flattened on four sides. From the rectangular cross section, it can be deduced that side boards were already laterally delimited in the same way on the top and bottom of the trunk and then subsequently separated, as will be explained below for the left and right sides of the tree trunk 2.
  • the tree trunk 2 is supported by a support element 4 and moves through the device in a direction perpendicular to the plane of the drawing.
  • a pair of milling heads 6 is shown on each side of the tree trunk 2.
  • the two milling heads 6 of a pair are each rotatably driven by a common shaft 8, the axis of which is in each case the axis of rotation 10 of a milling head 6.
  • the waves 8 are with (not provided) rotary drives.
  • the relative distance between a pair of milling heads 6 in the vertical direction is possible by moving the milling heads 6 on the shaft 8 in opposite directions.
  • the means for adjusting the milling heads in the vertical direction and for locking the milling heads in a specific distance setting are not shown in detail.
  • Each milling head 6 has a ring 12 of chopping knives 14 of a larger diameter and a ring 16 of chopping knives 18 of a smaller diameter.
  • the only partially visible cutting edges of all chopping knives 14 and 18 run in the illustrated embodiment in a substantially vertical direction in or parallel to the plane of the drawing.
  • the chopping knives 14 each mill an inner corner 20 of the trunk profile and the chopping knives 18 mill an outer corner 22 as the tree trunk 2 moves perpendicular to the plane of the drawing. It can also be seen that the size and position of the inner corners 20 is determined by the immersion depth of the milling heads 6 as a whole in the vertical and horizontal directions in the tree trunk. The formation of the outer corners 22, on the other hand, depends on the dimensions and position of the chopping knives 18 of the knife ring 16 of smaller diameter in relation to the position and the dimensions of the chopping knives 14 of the knife ring 12 of larger diameter.
  • the chopping knives 18 of the knife ring 16 of smaller diameter are themselves adjustable relative to the milling heads 6. Further details are explained using the exemplary embodiment of a milling head according to FIG. 2.
  • the cutter head 6 shown in perspective in FIG. 2 has a carrier body 24 of essentially hollow cylindrical shape, in the circumference of which the cleavers 14 of the Cleaver of larger diameter are embedded.
  • the chopping knives 14 are each fixed in the carrier body 24 by means of a screwed-in knife holder 26 and a pressure plate 28 screwed against it.
  • the lower edge 30 of the carrier body 24 shown in FIG. 2 does not come into contact with the tree trunk, as can easily be seen from the lower milling heads in FIG. 1. It can therefore have a somewhat larger diameter for stiffening.
  • the vertical penetration depth of the chopping knives 14 of the chopping knife ring of larger diameter is variable over the length of the tree trunk because of the taper of the tree trunks.
  • the vertical penetration depth of the chopping knives 18 of smaller diameter remains constant because it is in constant relation to the lower horizontal surface of the inner corner 20. Because of these relationships, the cutting of the chopping knives 14 of the outer ring is made correspondingly longer.
  • the ring of chopping knives of smaller diameter also has two diametrically opposed chopping knives 18, which, however, are slightly offset in their circumferential position with respect to chopping knives 14 of the ring of larger diameter.
  • the chopping knives 18 are clamped against knife carriers 34 by means of pressure plates 32.
  • These knife carriers 34 are designed to be adjustable in two mutually perpendicular directions, namely on the one hand in the axial direction of the milling head and in the substantially radial direction of the milling head.
  • Each knife holder 34 itself is clamped by means of screws 36 against a knife support 38, on which it is loosened after the screws 36 have been loosened by means of radial T-slot guides is displaceable and can be locked in different positions by the screws 36.
  • the knife supports 38 are in turn arranged in axial guides (not visible in the drawing) within the carrier body 24.
  • the knife supports 38 can be locked in different axial positions by means of a clamping block 40 and screws 42.
  • the knives 18 dip into the carrier body through openings 44 in the event of an axial displacement in the direction of the carrier body 24, so that their projection beyond the upper edges of the cleaver 14 of the ring of larger diameter can be changed. With the section with which the knives 18 dip into the openings 44, they are not effective. Their effective length is only their protrusion beyond the upper edge of the cleaver 14. This projection determines the vertical depth of the outer corners 22 in FIG. 1.
  • Saw blade segments 46 are provided on the upper side of the carrier body 24 of the milling head between the chopping knives 18 of the smaller diameter ring, which can be adjusted in two directions, based on the illustration in FIG. 2. These saw blade segments make a saw cut along the horizontal surfaces of the inner corners 20 according to FIG. 1. Thus, the vertical surfaces of the inner corners 20 are machined by cutting the chopping knives 14 and the horizontal surfaces by the saw blade segments 46.
  • the adjustable chopping knives 18 of the small diameter ring of knives are assigned finishing knives 48.
  • These finishing knives are fastened to the outer edge of the knife carrier 34 in such a way that their cutting edges run approximately in the tangential direction of the chopping knife ring of smaller diameter. They serve the same purpose as the saw blade segments 46. Because the finishing knives 48 on the knife carriers 34 are attached, they carry out all the adjustment movements of these knife carriers, so that they always remain in the same relative position to the cleaver 18 and each finish or finish the horizontal surfaces of the outer corners 22 in FIG. 1.
  • the chopping knife 18 of the small diameter knife ring in the milling head shown in FIG. 2 is adjusted by hand. To carry out a precise setting, it is expedient to briefly remove the milling head from the device and place it in a correspondingly set teaching in which the loosened chopping knives 14 can then be clamped in a precise position in a new position. An adjustment of the chopping knife 18 by suitable automatic adjustment means is also possible.
  • the milling head according to the invention makes it possible to manage with half the number of milling head drives in a system in which step corners are to be carved out of a tree trunk or to significantly reduce the storage of a plurality of differently dimensioned tools.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Milling Processes (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
EP96107714A 1995-05-24 1996-05-15 Dispositif pour découper des troncs d'arbres et tête de fraisage pour ce dispositif Expired - Lifetime EP0744255B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29508355U DE29508355U1 (de) 1995-05-24 1995-05-24 Vorrichtung zum Zerlegen von Baumstämmen in Holzerzeugnisse und Fräskopf für eine solche Vorrichtung
DE29508355U 1995-05-24

Publications (3)

Publication Number Publication Date
EP0744255A2 true EP0744255A2 (fr) 1996-11-27
EP0744255A3 EP0744255A3 (fr) 1998-02-25
EP0744255B1 EP0744255B1 (fr) 2003-11-26

Family

ID=8008306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107714A Expired - Lifetime EP0744255B1 (fr) 1995-05-24 1996-05-15 Dispositif pour découper des troncs d'arbres et tête de fraisage pour ce dispositif

Country Status (4)

Country Link
EP (1) EP0744255B1 (fr)
AT (1) ATE254987T1 (fr)
CZ (1) CZ146896A3 (fr)
DE (2) DE29508355U1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1321145A1 (fr) * 2000-07-31 2003-06-25 The Nisshin Oillio, Ltd. Agents antitumoraux
US6637483B2 (en) 2000-06-08 2003-10-28 Key Knife, Inc. Method and apparatus for profiling a log
US6688351B2 (en) 2002-02-20 2004-02-10 Key Knife, Inc. Adjustable profiling head for a wood cutting apparatus
EP1396318A2 (fr) * 2002-09-06 2004-03-10 Key Knife, Inc. Scies ajustables pour couper le bois
US6712105B1 (en) 2002-09-26 2004-03-30 Key Knife, Inc. Method and apparatus for planing an article of wood
WO2006045403A1 (fr) * 2004-10-25 2006-05-04 Gebrüder Linck Gmbh & Co. Kg 'gatterlinck' Maschinenfabrik Dispositif et procede pour profiler des troncs d'arbre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10229775C1 (de) * 2002-07-03 2003-07-10 Grotefeld Maschb & Vertriebs G Kapp- und Kantenrundungs-Aggregat

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3312033A1 (de) * 1971-11-27 1983-10-06 Kockums Ind Ab Reduziereinrichtung fuer holzbearbeitungsmaschinen
WO1987002297A1 (fr) * 1985-10-17 1987-04-23 Gebrüder Linck Maschinenfabrik "Gatterlinck" Gmbh Tete de scie circulaire
DE4300030C1 (de) * 1993-01-02 1994-01-05 Baur Klaus Peter Fräskopf
DE4419324A1 (de) * 1994-06-02 1995-12-21 Dietz Hans Prof Dr Vorrichtung zum Bearbeiten von Holz

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027106A (en) * 1959-02-19 1962-03-27 Hoe & Co R Rotary saw break-up head

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3312033A1 (de) * 1971-11-27 1983-10-06 Kockums Ind Ab Reduziereinrichtung fuer holzbearbeitungsmaschinen
WO1987002297A1 (fr) * 1985-10-17 1987-04-23 Gebrüder Linck Maschinenfabrik "Gatterlinck" Gmbh Tete de scie circulaire
DE4300030C1 (de) * 1993-01-02 1994-01-05 Baur Klaus Peter Fräskopf
DE4419324A1 (de) * 1994-06-02 1995-12-21 Dietz Hans Prof Dr Vorrichtung zum Bearbeiten von Holz

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6637483B2 (en) 2000-06-08 2003-10-28 Key Knife, Inc. Method and apparatus for profiling a log
EP1321145A1 (fr) * 2000-07-31 2003-06-25 The Nisshin Oillio, Ltd. Agents antitumoraux
EP1321145A4 (fr) * 2000-07-31 2006-03-22 Nisshin Oillio Ltd Agents antitumoraux
US6688351B2 (en) 2002-02-20 2004-02-10 Key Knife, Inc. Adjustable profiling head for a wood cutting apparatus
EP1396318A2 (fr) * 2002-09-06 2004-03-10 Key Knife, Inc. Scies ajustables pour couper le bois
EP1396318A3 (fr) * 2002-09-06 2005-06-01 Key Knife, Inc. Scies ajustables pour couper le bois
US7219706B2 (en) 2002-09-06 2007-05-22 Key Knife, Inc. Apparatus having adjustable saws for wood cutting
US6712105B1 (en) 2002-09-26 2004-03-30 Key Knife, Inc. Method and apparatus for planing an article of wood
WO2006045403A1 (fr) * 2004-10-25 2006-05-04 Gebrüder Linck Gmbh & Co. Kg 'gatterlinck' Maschinenfabrik Dispositif et procede pour profiler des troncs d'arbre
CN101048266B (zh) * 2004-10-25 2010-04-14 林克兄弟有限及两合公司“加特林克”机械厂 用于使树干成型的装置和方法
US7770616B2 (en) 2004-10-25 2010-08-10 Gebruder Linck GmbH & Co. KG “Gatterlinck” Maschinenfabrik Device and method for profiling tree trunks

Also Published As

Publication number Publication date
DE59610830D1 (de) 2004-01-08
EP0744255B1 (fr) 2003-11-26
EP0744255A3 (fr) 1998-02-25
DE29508355U1 (de) 1996-09-26
CZ146896A3 (en) 1996-12-11
ATE254987T1 (de) 2003-12-15

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