DE2330023C2 - Saw for sawing through wood or plastic - Google Patents
Saw for sawing through wood or plasticInfo
- Publication number
- DE2330023C2 DE2330023C2 DE19732330023 DE2330023A DE2330023C2 DE 2330023 C2 DE2330023 C2 DE 2330023C2 DE 19732330023 DE19732330023 DE 19732330023 DE 2330023 A DE2330023 A DE 2330023A DE 2330023 C2 DE2330023 C2 DE 2330023C2
- Authority
- DE
- Germany
- Prior art keywords
- saw
- wood
- crankshafts
- plastic
- saw blade
- 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
Links
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
- B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
- B27B3/02—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame
- B27B3/12—Mechanisms for producing the reciprocating movement of the saw frame; Arrangements for damping vibration; Arrangements for counter-balancing
-
- 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
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/02—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of beds; of guiding arrangements for work-tables or saw carriers; of frames
- B23D51/025—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of beds; of guiding arrangements for work-tables or saw carriers; of frames of arrangements for guiding the saw blade
-
- 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
- B23D59/00—Accessories specially designed for sawing machines or sawing devices
- B23D59/04—Devices for lubricating or cooling straight or strap saw blades
-
- 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
- B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
- B27B25/02—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees with feed and pressure rollers
-
- 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
- B27G19/10—Measures preventing splintering of sawn portions of wood
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
Description
2525th
Die Erfindung betrifft eine Säge der im Oberbegriff des Hauptanspruches genannten Art.The invention relates to a saw of the type mentioned in the preamble of the main claim.
Durch die GB-PS Il 87 892 ist eine derartige Säge bekannt. Bei ihr wird die eine Kurbelwelle unmittelbar durch Riementriebe und die zweite Kurbelwelle unter Zwischenschaltung eines Getriebes über weitere Riementriebe von einem gemeinsamen Motor in Drehung versetzt. Das Zwischengetriebe dient dem Ausgleich der Drehgeschwindigkeit beider Kurbelwellen bei der Bewegungsumkehr des Sägeblattes. — Die DE-OS 19 07 412 betrifft eine Säge, zwischen deren Kurbeln ein Sägeblatt eingespannt ist und bei der der Ausgleich der Drehgeschwindigkeit der Kurbelwellen durch eine parallel zu dem Sägeblatt angeordnete Kurbelstange, to durch unrunde Zahnräder oder sog. Herzzahnräder bewirkt wird.Such a saw is known from GB-PS Il 87 892. With her the one crankshaft becomes direct by belt drives and the second crankshaft with the interposition of a gearbox via further belt drives rotated by a common motor. The intermediate gear serves to compensate for the Rotational speed of both crankshafts when the saw blade reverses. - The DE-OS 19 07 412 relates to a saw, between the cranks The saw blade is clamped and the compensation of the Rotational speed of the crankshafts by a connecting rod arranged parallel to the saw blade, to is caused by non-circular gears or so-called heart gears.
Der Erfindung liegt die Aufgabe zu Grunde, die bekannten Sägen dahingehend zu verbessern, daß der Abstand der Befestigungspunkte des Sägeblattes an den Kurbeln oder Kurbelscheiben möglichst konstant gehalten und die hierbei auftretenden Zug- und Druckspannungen durch konstruktiv einfache Mittel ausgeglichen werden.The invention is based on the object to improve the known saws that the The distance between the attachment points of the saw blade on the cranks or crank disks is as constant as possible and the tensile and compressive stresses that occur here by means of structurally simple means be balanced.
Zur Lösung dieser Aufgabe sind die Merkmale des kennzeichnenden Teils des Hauptanspruches vorgesehen. Die Merkmale des Unteranspruches dienen der Verbesserung und Weiterentwicklung der Merkmale des Hauptanspruches.To solve this problem, the features of the characterizing part of the main claim are provided. The features of the dependent claim serve to improve and further develop the features of the main claim.
Gegenüber den bekannten Sägen gleicher Gattung erzielt die Säge nach der Erfindung den Vorteil, auf ein Getriebe und auf aufwendige Zahnräder besonderer Form verzichten zu können und dennoch eine Entlastung des Sägeblattes von Zug- und Druckkräften zu erreichen, was sowohl die Anwendung dünner wie so auch langer Sägeblätter erlaubt.Compared to the known saws of the same type, the saw according to the invention has the advantage of being on a To be able to do without gears and complex gears of a special shape and yet one Relief of the saw blade from tensile and compressive forces to achieve what both the application thinner and so Long saw blades are also allowed.
Die Erfindung ist nachstehend in der Zeichnung an Hand eines Ausführungsbeispieles näher erläutert. — EsThe invention is explained in more detail below in the drawing using an exemplary embodiment. - It
F i g. 1 einen Vertikalschnitt der erfindungsgemäßen Säge nach der Linie I-I der F i g. 2,F i g. 1 shows a vertical section of the invention Saw along line I-I in FIG. 2,
Fig.2 eine Seitenansicht in Richtung der Linie U-II der F ig. 1,2 shows a side view in the direction of the line U-II the fig. 1,
F i g. 3 eine Einzelheit der Säge in größerem Maßstab gegenüber F i g. 1,F i g. 3 shows a detail of the saw on a larger scale compared to FIG. 1,
F i g. 4 und 5 eine Seitenansicht des Sägeblattes und des Zahnriemens mit den beiden Kurbelscheiben undF i g. 4 and 5 a side view of the saw blade and the toothed belt with the two crank disks and
F i g. 6 zwei aufeinanderfolgende Stellungen des Sägeblattes in schematischer Darstellung.F i g. 6 two successive positions of the saw blade in a schematic representation.
Die erfindungsgemäße Säge umfaßt ein Gestell, das im wesentlichen aus den vertikalen Streben 1,2 und den horizontal angeordneten Balken 3, 4 besteht In dem Gestell sind zwei Zuführrollen 5, 6 für das zu sägende Holz drehbar gelagert, die von je einem Motor 7 bzw. 8 über Zahnräder 9 bzw. 10 angetrieben sind. Die Zuführrollen 5,6 sind mit ihren Enden in Lagern 11 bzw. 12,13 bzw. 14 drehbar gehalten und durch Schraubspindeln 15 und 16 vertikal einstellbar, die gemeinsam über die Welle 17 und die Zahnritzel 18, 19 bzw. 20, 21 in Drehung versetzt werden. Die Schraubspindeln 15, 16 sind in Lagerblöcken 22,23 und 24,25 gelagert.The saw according to the invention comprises a frame, which consists essentially of the vertical struts 1,2 and the horizontally arranged bars 3, 4 consists In the frame are two feed rollers 5, 6 for the to be sawed Wood rotatably mounted, each driven by a motor 7 and 8 via gear wheels 9 and 10, respectively. the Feed rollers 5, 6 are at their ends in bearings 11 or 12, 13 and 14 rotatably held and by screw spindles 15 and 16 vertically adjustable, which are jointly via the shaft 17 and the pinions 18, 19 and 20, 21 in Rotation. The screw spindles 15, 16 are mounted in bearing blocks 22, 23 and 24, 25.
In dem Gestell 1 sind zwei Asynchronmotoren 26 und 27 angeordnet, auf deren Wellen 28 bzw. 29 Kurbelscheiben 30 bzw. 31 angeordnet sind. Die Wellen 28,29 drehen sich in entgegengesetzter Richtung, wobei zwischen den Scheiben 30, 31 ein Sägeblatt 32 eingespannt ist, das an seinen Enden mit den Kurbelzapfen 33, 34 der Scheibe 30 bzw. 31 drehbar verbunden ist.Two asynchronous motors 26 and 27 are arranged in the frame 1, on their shafts 28 and 29, respectively Crank disks 30 and 31 are arranged. The shafts 28,29 rotate in the opposite direction, with a saw blade 32 is clamped between the discs 30, 31, which at its ends with the Crank pin 33, 34 of the disc 30 and 31 is rotatably connected.
Während des Drehens der Kurbelscheiben 30, 31 in entgegengesetzter Richtung kehrt das Sägeblatt 32 je Umdrehung der Scheiben gegenüber der Verbindungslinie zwischen den Wellen 28, 29 der Elektromotor 26 seine Bewegungsrichtung um. Das Holz 35 wird somit bei dem einen Sägehub, der einer halben Umdrehung der Scheiben 30, 31 entspricht, in einer anderen Richtung gesägt als bei dem nächsten Sägehub. Dies ist in Fig.4 schematisch durch Linien 36 dargestellt. Das Sägeblatt 32 besitzt gegen die Blattmitte hin zwei Gruppen gerichteter Zähne gegeneinander oder voneinander fort. — F i g. 6 zeigt den Gang der Säge durch das Holz.During the rotation of the crank disks 30, 31 in the opposite direction, the saw blade 32 turns Rotation of the disks with respect to the connecting line between the shafts 28, 29 of the electric motor 26 its direction of movement. The wood 35 is thus in the one saw stroke of half a turn corresponding to the disks 30, 31, sawn in a different direction than during the next sawing stroke. This is shown schematically in FIG. 4 by lines 36. That The saw blade 32 has two groups of teeth directed towards one another or one from the other away. - F i g. 6 shows the movement of the saw through the wood.
Die Kurbelscheiben 30,31 drehen sich während ihrer Drehbewegung im Verhältnis zueinander mit wechselnder Geschwindigkeit, um den Abstand zwischen den Kurbelzapfen 33, 34 als Befestigungspunkten des Sägeblattes an den Scheiben konstantzuhalten, andernfalls das Sägeblatt großen wechselnden Zug- und Druckkräften ausgesetzt wäre, die zu einer Zerstörung des Sägeblattes führen können. Die Konstanthaltung des Abstandes wird dadurch erziel., daß die Wellen 28, 29 mittels exzentrischer Zahnräder 37 bzw. 38 und eines Zahnriemens 39 gekuppelt sind. In F i g. 5 sind durch ausgezogene und unterbrochene Linien zwei Stellungen der Zahnräder 37, 38 und des Zahnriemens 39 dargestellt. Die Exzentrizität der Zahnräder 37, 38 ist. derart gewählt, daß stets der gewünschte Geschwindigkeitsunterschied zwischen den Wellen 28 und 29 Berücksichtigung findet. Durch den zur Anwendung gelangenden Asynchronmotor ist ein derartiger Geschwindigkeitsunterschied möglich.The crank disks 30,31 rotate alternately in relation to one another during their rotational movement Speed to adjust the distance between the crank pins 33, 34 as the attachment points of the To keep the saw blade constant on the disks, otherwise the saw blade large changing tension and Would be exposed to compressive forces that can destroy the saw blade. Keeping constant the distance is achieved. That the shafts 28, 29 by means of eccentric gears 37 and 38 and one Toothed belt 39 are coupled. In Fig. 5 are two positions by solid and broken lines the gears 37, 38 and the toothed belt 39 are shown. The eccentricity of the gears 37, 38 is. chosen such that the desired speed difference between the shafts 28 and 29 Is taken into account. There is such a speed difference due to the asynchronous motor used possible.
Hierzu 3 Blatt ZeichnungenFor this purpose 3 sheets of drawings
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7208367A NL164788C (en) | 1972-06-19 | 1972-06-19 | METHOD AND SAWING MACHINE FOR CUTTING WOOD AND / OR PLASTIC. |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2330023A1 DE2330023A1 (en) | 1974-01-10 |
DE2330023C2 true DE2330023C2 (en) | 1983-03-31 |
Family
ID=19816305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19732330023 Expired DE2330023C2 (en) | 1972-06-19 | 1973-06-13 | Saw for sawing through wood or plastic |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2330023C2 (en) |
GB (1) | GB1415744A (en) |
NL (1) | NL164788C (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4478120A (en) * | 1982-11-12 | 1984-10-23 | Daito Seiki Company Limited | Metal-sawing machine |
DE3390413T1 (en) * | 1982-12-21 | 1985-04-04 | American Saw Mfg. Co., East Longmeadow, Mass. | Swiveling band saw machine |
US4901612A (en) * | 1984-02-06 | 1990-02-20 | Harris Gerald R | Band saw apparatus and method with pressure controlled feed |
US4558614A (en) * | 1984-02-06 | 1985-12-17 | Harris Gerald R | Band saw apparatus and method |
CN103112051B (en) * | 2013-01-23 | 2015-01-21 | 李江华 | Saw cutting method of cork wood core material guide cutting groove |
CN104708673B (en) * | 2015-04-08 | 2017-06-23 | 黑龙江省林科木业有限公司 | Combination multi-disc saw device and sawmilling method |
CN114160875A (en) * | 2021-12-16 | 2022-03-11 | 江西瑞顺超细铜线科技协同创新有限公司 | T-shaped copper pipe cutting equipment |
CN117047192B (en) * | 2023-10-09 | 2023-12-29 | 成都易德莱斯科技有限公司 | Rope sawing machine for pipeline cutting |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1187892A (en) * | 1967-04-11 | 1970-04-15 | Tarkett Ab | Improvements in or relating to Frame Sawing Machines. |
DE1907412A1 (en) * | 1969-02-14 | 1970-09-03 | Bembe Parkett Fabrik Jucker & | Saw with reciprocating blade |
-
1972
- 1972-06-19 NL NL7208367A patent/NL164788C/en not_active IP Right Cessation
-
1973
- 1973-06-13 DE DE19732330023 patent/DE2330023C2/en not_active Expired
- 1973-06-15 GB GB2865573A patent/GB1415744A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2330023A1 (en) | 1974-01-10 |
NL7208367A (en) | 1973-12-21 |
NL164788C (en) | 1981-02-16 |
GB1415744A (en) | 1975-11-26 |
NL164788B (en) | 1980-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OD | Request for examination | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |