DE848860C - Circular saw blade - Google Patents
Circular saw bladeInfo
- Publication number
- DE848860C DE848860C DEV3071A DEV0003071A DE848860C DE 848860 C DE848860 C DE 848860C DE V3071 A DEV3071 A DE V3071A DE V0003071 A DEV0003071 A DE V0003071A DE 848860 C DE848860 C DE 848860C
- Authority
- DE
- Germany
- Prior art keywords
- circular saw
- saw blade
- material thickness
- zone
- concentric
- 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
- 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
- B27B33/02—Structural design of saw blades or saw teeth
- B27B33/08—Circular saw blades
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Harvester Elements (AREA)
Description
Kreissägeblätter, z. B. zur Holzbearbeitung, weisen eine relativ große Materialstärke auf, da hei ihnen die Zahnlinie nicht wie bei Band- und Gattersägen in Längsrichtung gespannt und damit steif gehalten wird. Wie bei Fuchsschwanzsägen gibt vor allem die Materialstärke des Kreissägeblattes demselben die nötige Steifheit. Das verursacht erhöhten Schnittverlust.Circular saw blades, e.g. B. woodworking, have a relatively large Material thickness, as the tooth line is not called for them as with band and frame saws is stretched in the longitudinal direction and thus kept stiff. As with foxtail saws Above all, the material thickness of the circular saw blade gives it the necessary rigidity. This causes increased loss of cut.
Bekannt und üblich ist die Erzeugung einer gewissen tangentialen, d. h. längs zur Zahnlinie verlaufenden Spannung in einem Kreissägeblatt durch Hämmern der Mittelzone desselben. Die Mittelzone wird durch das Hämmern gestreckt und die Umfangszone dadurch gespannt. Es ist auch bekannt, daß die Materialstärke von Kreissägeblättern um so dünner sein kann, je sorgfältiger dieselben durch Hämmern, wie oben beschrieben, gespannt werden. Da dieses Spannen mittels Hämmern aber eine sehr schwierige, wissenchaftlich nicht zu kontrollierende Handarbeit ist, wird meist eine größere Materialstärke, als sie im Idealfall verwendbar wäre, angewandt.It is known and customary to generate a certain tangential tension, ie tension running along the tooth line, in a circular saw blade by hammering the center zone of the same. The central zone is stretched by the hammering and the peripheral zone is thereby stretched. It is also known that the material thickness of circular saw blades can be thinner, the more carefully they are tensioned by hammering, as described above. Since this tensioning by means of hammering is a very difficult manual work that cannot be scientifically controlled, a greater material thickness is usually used than would ideally be used.
Demgegenüber ist der Gegenstand der Erfindung ein Kreissägeblatt, bei welchem zwischen der Nabe, d. h. dem Teil der Mittelzone, der zwischen die Flansche der Kreissägenwelle eingespannt wird, und einem ringförmigen Teil innerhalb des Zahnkranzes eine konzentrisch zum Mittelpunkt verlaufende Dehnzone liegt. Diese Dehnzone kann heispielsweise so ausgebildet sein, daß zwischen der Nabe i und dem innerhalb des Zahnkranzes verbleibenden Ring 2 eine konzentrisch zum Mittelpunkt verlaufende Zone 3 angeordnet ist, deren Materialstärke geringer als die des übrigen Blattes ist und die von der Mitte zum Umfang hin konzentrische Wellen aufweist.In contrast, the object of the invention is a circular saw blade, in which between the hub, d. H. the part of the central zone between the flanges the circular saw shaft is clamped, and an annular part within the Toothed rim is an expansion zone concentric to the center point. These Expansion zone can, for example, be designed so that between the hub i and the Ring 2 remaining within the ring gear is concentric to the center point extending zone 3 is arranged, the material thickness of which is less than that of the rest And which has concentric waves from the center to the circumference.
Diese Dehnzone gibt der Fliehkraft bei der Rotation des Kreissägeblattes in radialer Richtung nach, so daß die Fliehkraftspannung vorzugsweise in dem innerhalb des Zahnkranzes verbleibenden Ring aufgefangen wird und sich darin wie in einem frei im Raume rotierenden Ring in tangentialer Richtung, also längs der Zahnlinie, auswirkt. Durch diese Spannung der Umfangszone wird die Zahnlinie auch bei geringerer Materialstärke versteift wie die unter Zugspannung stehenden Sägeblätter von Gatter- oder Bandsägen.This expansion zone gives the centrifugal force when the circular saw blade rotates in the radial direction, so that the centrifugal tension is preferably in the inside of the ring gear remaining is caught and is in it as in a ring rotating freely in space in tangential direction, i.e. along the tooth line, affects. Due to this tension in the circumferential zone, the tooth line becomes even smaller Material thickness stiffened like the tensioned saw blades from Gatter- or band saws.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV3071A DE848860C (en) | 1951-01-24 | 1951-01-24 | Circular saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV3071A DE848860C (en) | 1951-01-24 | 1951-01-24 | Circular saw blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE848860C true DE848860C (en) | 1952-09-08 |
Family
ID=7570277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEV3071A Expired DE848860C (en) | 1951-01-24 | 1951-01-24 | Circular saw blade |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE848860C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2835714A1 (en) * | 1978-08-16 | 1980-02-28 | Ledermann & Co | CIRCULAR SAW BLADE |
| AT380822B (en) * | 1984-08-23 | 1986-07-10 | Felix Schwaiger | SAW BLADE |
| DE4120217A1 (en) * | 1991-06-19 | 1992-12-24 | Wurster & Dietz Maschf | CIRCULAR SAW BLADE AND METHOD FOR THE PRODUCTION THEREOF |
-
1951
- 1951-01-24 DE DEV3071A patent/DE848860C/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2835714A1 (en) * | 1978-08-16 | 1980-02-28 | Ledermann & Co | CIRCULAR SAW BLADE |
| US4407178A (en) * | 1978-08-16 | 1983-10-04 | Ledermann Gmbh & Co. | Circular saw blades |
| AT380822B (en) * | 1984-08-23 | 1986-07-10 | Felix Schwaiger | SAW BLADE |
| DE4120217A1 (en) * | 1991-06-19 | 1992-12-24 | Wurster & Dietz Maschf | CIRCULAR SAW BLADE AND METHOD FOR THE PRODUCTION THEREOF |
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