EP0519347A1 - Procédé et dispositif pour fendre ou refendre un produit de sciage rigide - Google Patents

Procédé et dispositif pour fendre ou refendre un produit de sciage rigide Download PDF

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Publication number
EP0519347A1
EP0519347A1 EP19920109932 EP92109932A EP0519347A1 EP 0519347 A1 EP0519347 A1 EP 0519347A1 EP 19920109932 EP19920109932 EP 19920109932 EP 92109932 A EP92109932 A EP 92109932A EP 0519347 A1 EP0519347 A1 EP 0519347A1
Authority
EP
European Patent Office
Prior art keywords
angle
section
feed direction
separating element
tool
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
EP19920109932
Other languages
German (de)
English (en)
Other versions
EP0519347B1 (fr
Inventor
Hans Dietz
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.)
Wurster u Dietz GmbH u Co Maschinenfabrik
Original Assignee
Wurster u Dietz GmbH u Co Maschinenfabrik
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 Wurster u Dietz GmbH u Co Maschinenfabrik filed Critical Wurster u Dietz GmbH u Co Maschinenfabrik
Publication of EP0519347A1 publication Critical patent/EP0519347A1/fr
Application granted granted Critical
Publication of EP0519347B1 publication Critical patent/EP0519347B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/025—Details of saw blade body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/28—Splitting layers from work; Mutually separating layers by cutting
    • 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
    • B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
    • B27B31/08—Discharging equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/12—Cutter blocks; Other rotary cutting tools for profile cutting
    • B27G13/14—Cutter blocks; Other rotary cutting tools for profile cutting for cutting grooves or tenons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/08—Accessories for keeping open the saw kerf, e.g. riving knives or wedge plates
    • 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
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/06—Cutting strips from a stationarily- held trunk or piece by a rocking knife carrier, or from rocking trunk or piece by a stationarily-held knife carrier; Veneer- cutting machines
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2074—Including means to divert one portion of product from another
    • Y10T83/2077—By kerf entering guide
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2074—Including means to divert one portion of product from another
    • Y10T83/2083—Deflecting guide

Definitions

  • the invention relates to a method for separating or slitting a rigid material to be cut, in particular wood, with a modulus of elasticity of preferably approximately 50,000 to 400,000 kg / cm2, in which a narrow cutting element has Tool, in particular a circular saw blade, creates a gap of finite width in the clippings at a cutting speed of more than about 40 m / s, and a side product after passing through the cutting elements by means of a wedge-like, fixed separating element out of the cleavage level in such a way from the main goods of the clippings is bent that the side goods are always at a distance from the tool after passing through the cutting elements.
  • a narrow cutting element has Tool, in particular a circular saw blade, creates a gap of finite width in the clippings at a cutting speed of more than about 40 m / s, and a side product after passing through the cutting elements by means of a wedge-like, fixed separating element out of the cleavage level in such a way from
  • the invention further relates to a device for cutting or slitting a rigid material to be cut, in particular wood, with a modulus of elasticity of preferably about 50,000 to 400,000 kg / cm2, with a narrow tool having cutting elements, in particular a circular saw blade, which at a cutting speed of more than about 40 m / s attaches a gap of finite width in the clippings, and with a wedge-like, spatially fixed separating element, which bends a side product after passing through the cutting elements out of the splitting plane in such a way that the side product after passing through the cutting material Elements always have a distance from the tool.
  • the known method and the known device have the sense to reduce the thermal load on the circular saw blade, which is caused by friction of the wood on the circular saw blade.
  • conventional circular saws there was always the problem that the cut wood was still on the rotating circular saw blade over a relatively long distance, with the result that considerable heat development occurred due to the friction between the circular saw blade and the wood. This deficiency has been eliminated by the known device and the known method.
  • the invention is therefore based on the object of developing a method and a device of the type mentioned at the outset such that the remaining residual friction work between the separated side goods and the separating element is further reduced.
  • this object is achieved according to the invention in that when the cut material enters the tool, the side product is first bent with its tip at a smaller angle and then first with the tip and then over its entire further length at a larger angle that the side fabric after the transition to the larger angle maintains a space to the surface of a first, outer portion of the separating element adjacent to the tool.
  • this object is achieved in that the separating element, viewed in the feed direction of the clippings, is at a distance from it adjacent to the tool and when the clippings run in System coming to the clippings circumference is provided with a hump, and that an imaginary connecting line between the hump and the cutting elements runs at a distance above a first section of the separating element lying between the hump and the circumference.
  • the wood entering the tool is namely raised in the area of the tip of the cut-off side board at a smaller angle and bent relatively slightly out of the splitting plane.
  • the side board is practically abruptly bent again by a further angle sign from the parting plane, this larger bending angle then being maintained for the entire further sawing of the continuously incoming cut material.
  • the detached side board then only slides on the surface of the hump, while the area between the hump and teeth of the circular saw blade is spanned by the detached side board and, as a result of the distance that occurs there, there is no contact between the detached side board and the separating element.
  • the feed speed in these applications is more than 1 m / s and the distance between the teeth and the hump, viewed in the feed direction of the material to be cut, may be a few ten centimeters, it becomes clear that the detached side board stays on the outer circumference of the separating element is only a few tenths of a second until the bump is finally larger.
  • the mechanical and thus thermal load on the outer areas of the separating element are therefore limited to minimal periods of time which have no effect in practice. Rather, it is achieved with the invention that the mechanical loading of the separating element is limited to the area of the cusp in continuous operation, the shape of which can be optimized from various points of view.
  • Other protective measures, such as cooling, surface coating and the like. The like. Are easier in the area of the hump because the separating element is thicker there and is therefore more suitable for corresponding additional structural measures than in the relatively narrow peripheral edge of the separating element.
  • the smaller angle is between 1 ° and 10 °, preferably it is 4 °.
  • the larger angle is between 3 ° and 12 °, preferably 6 °.
  • exemplary embodiments are preferred in which the separating element is arranged on a circular saw blade and is essentially in the form of a circular disk.
  • the area of engagement of the circular saw or the circular disk-shaped separating element then has the shape of a circular section.
  • all three sections of the separating element adjoin one another in the engagement area. All three sections are preferably provided with a surface whose shape corresponds to a surface that is simply curved in space, the entire surface including a certain angle to the splitting plane, the radius of curvature of the surface extending perpendicular to the direction of advance of the material to be cut, and finally the curvature of the surface in one Direction within the gap plane, but decreases from the outside inwards perpendicular to the feed direction.
  • first section has a first angle between 1 ° and 10 °, preferably 4 °, while a second angle of the second section is between 5 ° and 30 °, preferably 15 °.
  • third section preferably runs parallel to the parting plane, so that its angle of inclination is 0 °.
  • the incoming side board is first bent with its tip on the first, less inclined section, then runs onto the second, much more inclined section and is finally bent at its upper boundary edge, namely the hump, for the further course becomes.
  • the bending process is two-dimensional, on the one hand the side board is bent in the feed direction out of the parting plane, but on the other hand it is also bent transversely to the feed direction, namely in the direction of engagement of the circular saw blade.
  • This optimal shape is present in particular when the transition from the first to the second section is a line that runs perpendicular to the feed direction and / or the transition forming the bump between the second section and the third section has a linear course, the line being constant , third angle to the feed direction is inclined. Finally, an optimal effect is achieved when the transition and the bump intersect at the periphery of the separating element.
  • 10 designates a circular saw.
  • the circular saw 10 has a circular saw blade 11 which is provided with a flat section 12 in the region near the axis. With 13 a drive shaft for the circular saw blade 11 is indicated, and 14 is an arrow with which it is symbolized that the circular saw blade 11 rotates during operation.
  • the circular saw blade 11 In the vicinity of the periphery, the circular saw blade 11 is provided with a peripheral edge 15 of a type known per se and the function of which will be discussed further below. Finally, the circular saw blade 11 is provided with teeth 16 on its circumference in the usual manner.
  • circular saw 10 Coaxial with circular saw blade 11, circular saw 10 is provided with an approximately circular disk-shaped separating element 20. With 21 it is indicated that the separating element 20 is fixed in space, i.e. does not rotate with the circular saw blade 11.
  • a peripheral circumference 22 of the separating element 20 nestles against the inside of the raised edge 15 of the circular saw blade 11.
  • a first inclined section 23 leads from the circumference 22 inwards in the radial direction, to which a second inclined section 24 then adjoins.
  • the second inclined section 24 terminates in a bump 25 at its upper edge.
  • a third, flat section 26 then adjoins the hump 25 radially inward.
  • FIG. 30 is a wooden profile, for example a model, as it is processed in conventional sawmill systems.
  • An arrow 31 indicates the direction of advance of the wooden profile 30 in the illustration in FIG. 1 from right to left.
  • a thicker main article 32 remains, and a side article 33, for example a side board, is separated from the main article 32 on the side.
  • the side fabric 33 consequently runs with its tip 34 or its underside 35 onto the first inclined section 23 and is thus separated from the gap 36 or the gap plane 37 turned.
  • a pressure element is symbolized by 38, which can act laterally on the side goods 33 in the area of the gap 36 in order to avoid undesired advancement of the gap against the feed direction 31.
  • Fig. 1 shows the state in which the wooden profile 30 is just entering the area of the circular saw 10.
  • the side goods 33 are initially only slightly bent with their tip 34 from the gap plane 37, because the tip 34 rests on the relatively less inclined first section 23 at the first moment of engagement.
  • FIG. 2 shows that the edge 15 of the circular saw blade 11 is provided with a run-on slope, the angle ⁇ of which may be in the range between 10 and 60 °.
  • the upper edge of the edge 15 then merges almost continuously into the circumference 22 of the separating element 20. As already mentioned several times, this is inclined gently in this area, the corresponding first section 23 having an inclination angle ⁇ of preferably 5 °.
  • the arrangement can be such that an imaginary connecting line 27 between the upper edge of the edge 15 and the teeth 16 extends in continuation of the inclination of the first section 23, so that the tip 34 of the side fabric 33 with its underside 35 is just parallel to the connecting line 27 lies.
  • the tip 34 it is also possible for the tip 34 to rest on the first inclined section 23 substantially in the region of its front end.
  • FIG. 4 shows the separating element 20 as a whole, and it can be seen that it has an outer, flat area 50 which rises slightly conically inwards in order to pass into a reinforced flange area 51 there.
  • the engagement area of the separating element 20 is determined by an edge 52 which defines an area in the form of a segment of a circle. This area corresponds to a center angle ⁇ of, for example, 90 °.
  • the sections 23, 24 and 26 lie somewhat below the flat area 50 of the separating element 20, which is manifested in a step 53 below the edge 52.
  • a linear transition 54 is located between the first section 23 and the second section 24, while the transition from the second section 24 to the third section 26 is formed by the likewise linear bump 25.
  • the two lines intersect at the periphery of the separating element 20.
  • the transition 54 is at right angles to the feed direction 31, while the bump 25 is inclined at an angle ⁇ to the transition 54, wherein the angle ⁇ is preferably about 15 °.
  • FIGS. 5 and 6 contour lines of those surfaces are now shown in FIGS. 5 and 6, which are formed by sections 23, 24 and 26.
  • the surfaces of the sections 23, 24 and 26 near the edge 52 are flatter and steeper towards the periphery of the separating element 20.
  • FIG. 7 where the profiles of the surfaces or the transition 54 and the bump 25 (again not to scale) can be seen in a side view.
  • the radii of curvature R1, R2 and R3 are shown in Fig. 7 near the periphery, in the middle and near the edge 52.
  • the values of the radii of curvature R1, R2 and R3 take inwards, i.e. towards edge 52.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Sawing (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Basic Packing Technique (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Scissors And Nippers (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Treating Waste Gases (AREA)
  • Stringed Musical Instruments (AREA)
EP19920109932 1991-06-18 1992-06-12 Procédé et dispositif pour fendre ou refendre un produit de sciage rigide Expired - Lifetime EP0519347B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4120096 1991-06-18
DE4120096 1991-06-18
DE4121021 1991-06-26
DE19914121021 DE4121021A1 (de) 1991-06-18 1991-06-26 Verfahren und vorrichtung zum trennen oder schlitzen eines starren schnittguts

Publications (2)

Publication Number Publication Date
EP0519347A1 true EP0519347A1 (fr) 1992-12-23
EP0519347B1 EP0519347B1 (fr) 1995-02-22

Family

ID=25904645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920109932 Expired - Lifetime EP0519347B1 (fr) 1991-06-18 1992-06-12 Procédé et dispositif pour fendre ou refendre un produit de sciage rigide

Country Status (6)

Country Link
US (1) US5253686A (fr)
EP (1) EP0519347B1 (fr)
AT (1) ATE118719T1 (fr)
CA (1) CA2071607C (fr)
DE (2) DE4121021A1 (fr)
FI (1) FI922817A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19828749B4 (de) * 1997-08-26 2007-12-13 Schelling Anlagenbau Gmbh Unterflursägemaschine
EP1872918A1 (fr) * 2006-06-30 2008-01-02 Nordpan Rubner Holzbauelemente GmbH Sciage des planches en bois avec une scie circulaire

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319131B1 (ko) * 1999-06-14 2001-12-29 정운조 식품 슬라이서의 절단편 이탈 안내장치
ATE396023T1 (de) * 2000-01-24 2008-06-15 Graniterie Petitjean Sas Zwischenplatte zum einsetzen in einem schneidschlitz
US7293488B2 (en) * 2003-11-04 2007-11-13 Henry Wang Splitter for circular table saw and method of installation
US7475621B2 (en) * 2004-11-02 2009-01-13 Henry Wang Kerf control apparatus for a table saw
CN103056939A (zh) * 2012-12-28 2013-04-24 青岛金岭电器有限公司 一种木工裁板开槽锯轴向调整装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670768A (en) * 1949-10-26 1954-03-02 Armstrong Cork Co Work-engaging cutter guide for splitting machines
US3089524A (en) * 1960-11-21 1963-05-14 Corlise M Sweet Reduction of saw dust in cutting wood by bending the wood
WO1988002683A1 (fr) * 1986-10-17 1988-04-21 Wurster U. Dietz Gmbh U. Co. Maschinenfabrik Procede et dispositif pour fendre ou refendre un produit de sciage rigide, notamment du bois

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035048A1 (de) * 1990-11-05 1992-05-07 Wurster & Dietz Maschf Vorrichtung zum trennen oder schlitzen eines starren schnittgutes, insbesondere holz

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670768A (en) * 1949-10-26 1954-03-02 Armstrong Cork Co Work-engaging cutter guide for splitting machines
US3089524A (en) * 1960-11-21 1963-05-14 Corlise M Sweet Reduction of saw dust in cutting wood by bending the wood
WO1988002683A1 (fr) * 1986-10-17 1988-04-21 Wurster U. Dietz Gmbh U. Co. Maschinenfabrik Procede et dispositif pour fendre ou refendre un produit de sciage rigide, notamment du bois

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19828749B4 (de) * 1997-08-26 2007-12-13 Schelling Anlagenbau Gmbh Unterflursägemaschine
EP1872918A1 (fr) * 2006-06-30 2008-01-02 Nordpan Rubner Holzbauelemente GmbH Sciage des planches en bois avec une scie circulaire

Also Published As

Publication number Publication date
CA2071607A1 (fr) 1992-12-19
FI922817A0 (fi) 1992-06-17
DE59201445D1 (de) 1995-03-30
ATE118719T1 (de) 1995-03-15
DE4121021A1 (de) 1992-12-24
FI922817A (fi) 1992-12-19
US5253686A (en) 1993-10-19
EP0519347B1 (fr) 1995-02-22
CA2071607C (fr) 1996-07-16
DE4121021C2 (fr) 1993-04-22

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