EP0335911A1 - Circular saw head. - Google Patents
Circular saw head.Info
- Publication number
- EP0335911A1 EP0335911A1 EP88900948A EP88900948A EP0335911A1 EP 0335911 A1 EP0335911 A1 EP 0335911A1 EP 88900948 A EP88900948 A EP 88900948A EP 88900948 A EP88900948 A EP 88900948A EP 0335911 A1 EP0335911 A1 EP 0335911A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circular saw
- saw blade
- head according
- support
- support surface
- 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
Links
Classifications
-
- 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
- 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
-
- 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
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
- B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
- B27B5/32—Devices for securing circular saw blades to the saw spindle
-
- 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
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
- B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
- B27B5/34—Devices for securing a plurality of circular saw blades on a single saw spindle; Equipment for adjusting the mutual distance
-
- 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
- Y10T83/929—Tool or tool with support
- Y10T83/9372—Rotatable type
- Y10T83/9377—Mounting of tool about rod-type shaft
- Y10T83/9379—At end of shaft
Definitions
- the invention relates to a circular saw head for sawing off side boards from logs or models, with at least one circular saw blade which has a ring of saw teeth.
- Such circular saw heads are usually arranged in pairs one above the other on one or on both sides of the log or model to be processed and cut off one or more side boards while the log or model is being guided along the circular saw heads.
- the log or model is guided both by the feed device and by fixed guide elements, which should reach as close as possible to the circular saw heads in order to support and guide the wood as close as possible to the point at which the saw cuts were made v / earth.
- the object of the invention is therefore to design a circular saw head of the type mentioned in such a way that improved lateral guidance of the wood and thus a reduction in the lateral forces exerted by the wood on the circular saw blades are achieved.
- an end annular support surface is arranged within the ring of saw teeth and at a radial distance therefrom which projects axially beyond the end face of the circular saw blade and lies in the plane of the end edges of the saw teeth on the end face.
- the log or the model is supported on both sides by the supporting surfaces of the circular saw heads and guided between these opposing supporting surfaces. Even without separate guide elements, an exact, central wood guide is achieved, which also improves the dimensional accuracy of the side boards produced and the main goods remaining in between.
- the support surface or a support ring forming the support surface can be arranged fixed or rotatable with respect to the circular saw blade.
- the support surface can be formed by the end face of a separate support ring which is attached together with the circular saw blade to a common hub.
- the support surfaces according to the invention can be provided within the inner and / or the outer circular saw blade.
- the support surface assigned to the outer circular saw blade serves to support the main goods, while the support surface assigned to the inner circular saw blade supports the side board produced between the two circular saw blades.
- the "outer” circular saw blade is the circular saw blade arranged at the end of the circular head, which produces the inner kerf on the log to be processed.
- the “inner” circular saw blade is set back axially on the circular saw head compared to the outer circular saw blade and creates the outer kerf on the log.
- the inner circular saw blade which only forms a comparatively narrow circular ring and only has a small blade overhang on its supporting flange. can therefore be made relatively thin, so that the kerf produced by him is narrow. The cutting losses that occur are therefore also low.
- the guidance of the side board on its outer edge through the freely rotatable support ring results in good wood guidance, which contributes significantly to achieving more precise cut goods.
- the log is guided between the support rings of the two pairs of circular saw heads because the lateral support is provided by the support rings close to the point at which the side boards are separated from the log. At the same time, voltages are absorbed that are free when the side boards are removed
- the support surface can be designed with low friction, for example by choosing suitable materials such as ceramic or chrome.
- a further reduction in the frictional heat can be achieved by the freely rotatable mounting of the support ring. Even at very high speeds of the circular saw head, the risk is significantly reduced that the Holzfl surfaces come into contact with the end faces of the circular saw blades and could be burned there by the resulting frictional heat. Because of its freely rotatable mounting, the support ring takes up the peripheral speed at which the friction is lowest compared to the wood moving along it.
- 1 is a circular head in section, parts of an axially parallel circular saw head and the cross section of a log or model to be processed are shown,
- FIG. 2 is a circular head similar to FIG. 1 in section, with a support ring is freely rotatable,
- FIG. 3 in a section similar to FIG. 2 a circular head with two circular saw blades, each of which is assigned a fixed support surface
- FIG. 4 is an illustration similar to FIG. 1, but two circular saw blades are provided on the circular head, the thickened fastening flange itself forming the supporting surface, 5 is an enlarged partial section through " the thickened mounting flange of a circular saw blade with a support disc attached thereto,
- Fig. 6 is a view similar to Fig. 4, wherein the circular saw head used has only on its inner circular saw blade a freely rotatable support ring and
- Fig. 7 shows a modified embodiment of the circular saw head according to Fig. 6 in section.
- the circular saw heads 1 and 1 'shown in FIG. 1 are used to saw off a side board 3 from a log 2 which has already been flattened, for example, on both opposite sides or on all four sides and from which four edges have been milled. In the same way, a side board is simultaneously sawn off on the opposite side by two circular saw heads.
- the circular saw head 1 or 1 ' has a circular saw blade 4 which is screwed onto a supporting flange 5.
- the inner edge of the circular saw blade or circular saw blade 4 consisting of circular ring segments is designed as a thickened fastening edge 6, in which fastening screws 7 are countersunk, which are screwed into the supporting flange 5.
- the outer end face 8 of the circular saw blade 4 is smooth.
- the support flange 5 is attached to a hub 9, which is removably attached to the end of a saw shaft 10.
- a support ring 11 is screwed onto the latter, the end face of which forms an annular support surface 12.
- the circular saw blade 4 carries a ring of saw teeth 13 which, for example, carry hard metal plates and project axially on both sides over the circular saw blade 4.
- the support surface 12 lies in the plane of the front outer edges 1 of the saw teeth 13. The support surface 12 therefore touches the sawn wooden surface that was produced by the axially outer edges 14 of the saw teeth 13.
- the exemplary embodiment of the circular saw head 1 shown in FIG. 2 differs from the exemplary embodiment according to FIG. 1 only in that the supporting ring 11 forming the end circular support surface 12 is freely rotatable.
- the support ring 11 is rotatably supported by a roller bearing 15, for example a deep groove ball bearing, on a hub 16 connected to the support flange 5.
- the roller bearing 15 is supported axially on a shoulder of the hub 16.
- an inner circular saw blade 4 and an outer circular saw blade 17 are each arranged axially at a distance from one another.
- a support flange 18 carrying the outer circular saw blade 17 is connected to the support flange 5 of the inner circular saw blade 4 by screws 19.
- both circular saw blades 4 and 17 serve to separate an outer side board 3 or a waiting board and an inner side board from the tree trunk 2 in a single pass. This process is carried out on both sides of the log 2.
- both circular saw blades 4 and 17 are each assigned annular support surfaces 12.
- the support surfaces 12 are each formed by a support ring 20 which, in the example shown, is integrally connected to the respective support flanges 5 and 18, respectively.
- the two supporting surfaces 12 are each formed by the thickened fastening edge 6 and 21 of the circular saw blades 4 and 17.
- This fastening edge 6 or 21 projects axially so far beyond the end face 8 or 22 of the circular saw blades 4 or 17 that the support surface 12 lies in the plane of the axially outer edge 14 of the saw teeth 13.
- the support surface 12 can also be formed by a support ring 23 which is attached to the outer end face 8 of the circular saw blade 4 (and / or in a corresponding manner to the outer end face 22 of the circular saw blade 17) can be.
- the support ring 23 can, for example, consist of ceramic material or a chromium alloy to reduce the friction. Instead, the support surface 12 can also have a chrome coating.
- the circular saw heads 101 and 101 'shown in FIG. 6 serve to saw off an inner side board 103 and an outer side board 104 from a log 2.
- the two circular saw heads 101 and 101 ' are arranged axially parallel one above the other. Before the log 2 is fed to the circular saw heads 101, 101 ', it is flattened on all four sides. In addition, the edges of the log lying in front of the edges of the side boards 103, 104 are milled out.
- the circular saw head 101 or 101 ' has an axially outer circular saw blade 105 which is screwed onto an annular support flange 106 which is screwed to a hub 107.
- An inner circular saw blade 108 which is axially inwardly offset with respect to the outer circular saw blade 105, is screwed to a supporting flange 109, the diameter of which is larger than the outer diameter of the outer supporting flange 106.
- the inner support flange 109 is pot-shaped and also connected to the hub 107 or made in one piece with it.
- the hub 107 is removably attached to a saw shaft flange 110 which is attached to the end of a saw shaft 111.
- the support flange 109 of the inner circular saw blade 108 encloses an annular space 112 which contains a freely rotatable support ring 113.
- the support ring 113 is mounted on the hub 107 in a freely rotatable manner via a roller bearing 114, for example a deep groove ball bearing.
- the roller bearing 114 is axially supported on a shoulder 115 of the hub 107.
- the annular space 112 has an annular opening 116, which is located radially inside the support flange 109, but radially outside the support flange 106.
- the support ring 113 projects out of this opening 116 with an annular support surface 117, the support surface 117 projecting axially to a small extent beyond the end face 118 of the inner circular saw blade 108.
- the support surface 117 lies in the same plane as the lateral cutting edges of the saw teeth, which are usually equipped with hard metal plates.
- the outer edge of the inner side board 3 separated from the two circular saw heads 101 and 101 ' is supported axially outwards the support surface 117 of the support ring 113.
- the support ring 113 rotates only as slowly as is required by the movement of the log 2 moved along it. This prevents the wooden surfaces from coming into contact with the rapidly moving end faces on the circular head.
- the inner circular saw blade 108 forms only a relatively narrow circular ring surface and protrudes only slightly beyond its supporting flange 109 and also does not have to absorb any lateral supporting forces, it can be made relatively narrow, for example as narrow as the outer circular saw blade which is largely unloaded by lateral forces 105.
- the exemplary embodiment of a circular head 101 "shown in FIG. 7 differs from the previously described example only in that cutter edges 119 and 120 are arranged on the circumference of the two support flanges 106 and 109, which process the edges of the side boards 103 and 104, as in FIG 7 is indicated below, which eliminates the need to carry out the step-like edge milling on the log 2 before it is processed by the circular saw head 101 ".
- the cutter blades 119 arranged on the support flange 106 of the outer circular saw blade 105 extend axially beyond the distance between the two circular saw blades 105 and 108. They protrude into an end-side recess 121 of the support ring 113. This ensures that the edge of the side board 103 is machined over the entire width without the cutter edges 119 colliding with the slower rotating support ring 113.
- a support surface assigned to the outer circular saw blade 105 has been dispensed with.
- a lateral guidance of the main goods of the wooden trunk 2 follows indirectly by the support of the edges of the side board 3 by the support surface 117, because the two circular heads 101 and 101 'are offset in the longitudinal direction of the wooden trunk 2.
- the side board supported on the support surface 117 is thus only partially separated from the main article, so that the lateral support and guiding force exerted on the side board 103 is also exerted on the main article of the log 2.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
- Sawing (AREA)
- Harvester Elements (AREA)
Abstract
Une tête de scie circulaire (1) pour couper les planches latérales (3) d'un tronc d'arbre (2) possède une lame (4) montée sur un arbre de scie (10) au moyen d'une bride porteuse (5). A l'intérieur d'une couronne de dents de scie (13) de la lame (4), et radialement espacée de ces dernières, est agencée une surface d'appui (12) annulaire frontale qui est en saillie axiale sur la surface frontale (8) de la lame (4) et est située dans le plan des arêtes extérieures (14) frontales des dents (13). Cette surface d'appui (12) supporte la surface du bois sciée par les dents (13), assurant ainsi le guidage du bois.A circular saw head (1) for cutting the side planks (3) of a tree trunk (2) has a blade (4) mounted on a saw shaft (10) by means of a support flange (5 ). Inside a sawtooth crown (13) of the blade (4), and radially spaced from the latter, is arranged a front annular bearing surface (12) which projects axially on the front surface (8) of the blade (4) and is located in the plane of the outer edges (14) of the front teeth (13). This bearing surface (12) supports the surface of the wood sawn by the teeth (13), thus ensuring the guiding of the wood.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88900948T ATE75434T1 (en) | 1986-12-24 | 1987-12-18 | CIRCULAR SAW HEAD. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3644503 | 1986-12-24 | ||
DE19863644503 DE3644503C1 (en) | 1986-12-24 | 1986-12-24 | Circular-saw head |
DE3715578 | 1987-05-09 | ||
DE19873715578 DE3715578A1 (en) | 1987-05-09 | 1987-05-09 | Circular saw head for longitudinal log cutting |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0335911A1 true EP0335911A1 (en) | 1989-10-11 |
EP0335911B1 EP0335911B1 (en) | 1992-04-29 |
Family
ID=25850888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880900948 Expired - Lifetime EP0335911B1 (en) | 1986-12-24 | 1987-12-18 | Circular saw head |
Country Status (6)
Country | Link |
---|---|
US (1) | US5027517A (en) |
EP (1) | EP0335911B1 (en) |
CA (1) | CA1305647C (en) |
DE (1) | DE3778709D1 (en) |
FI (1) | FI86817C (en) |
WO (1) | WO1988004970A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1254732B1 (en) * | 2001-01-11 | 2011-10-05 | Shiga Yamashita Co., Ltd. | Cutting-off apparatus |
SE521638C2 (en) | 2001-04-23 | 2003-11-18 | Globe Invent Ab | Method for processing an object, machine and tool unit for performing the method |
US20030056628A1 (en) * | 2001-09-27 | 2003-03-27 | Eli Razon | Coaxial spindle cutting saw |
WO2006101423A1 (en) * | 2005-03-23 | 2006-09-28 | Husqvarna Ab | Improvements relating to a cutting or sawing machine |
AT505589B1 (en) | 2007-07-26 | 2011-03-15 | Boehler Miller Messer Und Saegen Gmbh | FLANSCHSÄGEBLATT |
US7753521B2 (en) * | 2008-03-31 | 2010-07-13 | Johnson & Johnson Vision Care, Inc. | Lenses for the correction of presbyopia and methods of designing the lenses |
CN201931158U (en) * | 2010-11-30 | 2011-08-17 | 宁波黑松工具有限公司 | Cutting machine with double saw blades |
BR112014009464A2 (en) * | 2011-10-17 | 2017-05-09 | Suzhou Tingens Iisaw Tech Co Ltd | rotary chamfering saw blade |
CN202479610U (en) * | 2011-10-17 | 2012-10-10 | 苏州天健旋切技术有限公司 | Rotary bevelment composite saw blade structure |
EP3075501A1 (en) * | 2015-03-28 | 2016-10-05 | D. Swarovski KG | Chop saw for a cutting machine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1861218A (en) * | 1930-12-20 | 1932-05-31 | Huther Brothers Saw Mfg Compan | Circular saw |
US2555382A (en) * | 1945-10-01 | 1951-06-05 | Cascades Plywood Corp | Panel scarfing machine |
DE1913295A1 (en) * | 1969-03-15 | 1970-10-22 | Linck Maschf & Eisen | Cutter head for profile machining of logs |
US3656395A (en) * | 1970-06-08 | 1972-04-18 | Kaman Corp | Guitar construction |
DE2320919C2 (en) * | 1973-04-25 | 1991-06-20 | Ledermann Gmbh + Co, 7240 Horb | Quick-change clamping device for rotary tools, especially for circular saws |
DE3045107A1 (en) * | 1980-11-29 | 1982-07-01 | Wurster u. Dietz GmbH u. Co Maschinenfabrik, 7400 Tübingen | Round timber rotating slicing tool |
DE3216200A1 (en) * | 1982-04-30 | 1983-11-03 | Wacker-Chemitronic Gesellschaft für Elektronik-Grundstoffe mbH, 8263 Burghausen | METHOD FOR SAWING CRYSTAL RODS AND MULTI-BLADE INTERNAL HOLE SAW FOR CARRYING OUT THE METHOD |
US4456045A (en) * | 1983-01-13 | 1984-06-26 | Gregoire James L | Dual rotation chipping head |
DE3508716C1 (en) * | 1985-03-12 | 1986-02-06 | Gebrüder Linck Maschinenfabrik und Eisengießerei "Gatterlinck", 7602 Oberkirch | Circular saw head for sawing off side boards |
US4690188A (en) * | 1986-10-27 | 1987-09-01 | Weyerhaeuser Company | Variable curve linebar with skewable saws |
-
1987
- 1987-12-18 DE DE8888900948T patent/DE3778709D1/en not_active Expired - Fee Related
- 1987-12-18 US US07/415,285 patent/US5027517A/en not_active Expired - Fee Related
- 1987-12-18 WO PCT/EP1987/000800 patent/WO1988004970A1/en active IP Right Grant
- 1987-12-18 EP EP19880900948 patent/EP0335911B1/en not_active Expired - Lifetime
- 1987-12-23 CA CA 555199 patent/CA1305647C/en not_active Expired - Lifetime
-
1989
- 1989-06-16 FI FI892953A patent/FI86817C/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO8804970A1 * |
Also Published As
Publication number | Publication date |
---|---|
FI892953A (en) | 1989-06-16 |
US5027517A (en) | 1991-07-02 |
DE3778709D1 (en) | 1992-06-04 |
EP0335911B1 (en) | 1992-04-29 |
FI86817C (en) | 1992-10-26 |
FI86817B (en) | 1992-07-15 |
FI892953A0 (en) | 1989-06-16 |
WO1988004970A1 (en) | 1988-07-14 |
CA1305647C (en) | 1992-07-28 |
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Legal Events
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