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DE903402C - A composite saw blade consisting of a support body made of ordinary steel and a toothed cutting edge made of high-speed steel - Google Patents

A composite saw blade consisting of a support body made of ordinary steel and a toothed cutting edge made of high-speed steel

Info

Publication number
DE903402C
DE903402C DEL10079A DEL0010079A DE903402C DE 903402 C DE903402 C DE 903402C DE L10079 A DEL10079 A DE L10079A DE L0010079 A DEL0010079 A DE L0010079A DE 903402 C DE903402 C DE 903402C
Authority
DE
Germany
Prior art keywords
cutting edge
saw blade
steel
speed steel
support body
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
Application number
DEL10079A
Other languages
German (de)
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.)
Loos & Kinkel
Original Assignee
Loos & Kinkel
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 Loos & Kinkel filed Critical Loos & Kinkel
Priority to DEL10079A priority Critical patent/DE903402C/en
Application granted granted Critical
Publication of DE903402C publication Critical patent/DE903402C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/12Straight saw blades; Strap saw blades
    • B23D61/126Straight saw blades; Strap saw blades having cutting teeth along both edges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/12Straight saw blades; Strap saw blades
    • B23D61/123Details of saw blade body
    • B23D61/125Composite body, e.g. laminated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Description

Das bekannte, aus einem Tragkörper aus gewöhnlichem Stahl und einer einseitigen Zähnschneide aus Schnellstahl bestehende Verbundsägeblatt hat :ebenso wie das mit einer einseitigen Zahnschneide und nur aus Schnellstahl bestehende Metallsägeblatt den Nachteil der verhältnismäßig kurzen Lebensdauer.The well-known, from a support body made of ordinary steel and one one-sided tooth cutting edge made of high-speed steel has a composite saw blade: the same like the metal saw blade with a one-sided tooth cutting edge and only made of high-speed steel the disadvantage of the relatively short lifespan.

Die nur in der Literatur bekannten, ganz aus Schnellstahl bestehenden Metallsägeblätter für Maschinensägen haben, soweit sie auf beiden Längsseiten gezahnt sind, deshalb weder eine Verbreitung noch aber eine zeitweilige Anwendung gefunden, weil ihre Zerbrechlichkeit infolge Sprödigkeit durch ,die bei zweiseitig gezahnten Metallsägeblättern von beiden Zahnlücken ausgehende und dadurch gesteigerte Kerbwirkung ungleich größer ist als bei Metallsägeblättern, die nicht aus Schnellstahl sind. Auch wird allgemein von zweiseitig gezahnten Metallsägeblättern aus Schnellstahl, die vornehmlich :dem Zersägen solcher Werkstücke dienen, deren Dicke größer ist als die, übliche Breite des hierfür geeigneten Sägeblattes, angenommen, daß sie beim Durchsägen von Werkstücken, die dicker als die Breite des Sägeblattes sind, infolge .der auch an der :gezahnten und .daher verbreiterten Rückenkante auftretenden Reibung ,das Sägen erschweren oder gar stumpf werden. Der Erfindung liegt die Beobachtung zugrunde, daß die Schnittbreite :des infolge der saitenartigen Einspannung des Sägeblattes und der beim Sägen auftretenden Be.schleunigungskräfte in Schwingungen kommendem Sägeblattes erheblich weiter ist als die Zahnkronenbreite, so daß auch -bei zweiseitig :gezahnten Sägeblättern aus Schnellstahl eine erhöhte Reibung .deshalb nicht eintritt, weil die nachfolgend gez.ahnte Rückenkante einen entsprechenden erweiterten Einschnitt antrifft.The ones only known in literature and made entirely of high-speed steel Metal saw blades for machine saws have, as far as they are toothed on both long sides are, therefore neither a widespread nor a temporary application found, because their fragility is due to the brittleness of those with double-sided teeth Metal saw blades emanating from both tooth gaps and thereby increased notch effect is much larger than with metal saw blades that are not made of high-speed steel. Double-sided toothed metal saw blades made of high-speed steel are also generally used which primarily: are used to saw such workpieces whose thickness is greater than the usual width of the saw blade suitable for this purpose, it is assumed that they when sawing through workpieces that are thicker than the width of the saw blade, as a result of the also occurring on the serrated and therefore widened back edge Friction, make sawing difficult or even blunt. The invention lies in observation is based on the fact that the cutting width: the result of the string-like clamping of the saw blade and the acceleration forces that occur during sawing in vibrations The saw blade is considerably wider than the width of the tooth crown, so that even with two-sided : Toothed saw blades made of high-speed steel, increased friction, therefore does not occur, because the subsequent serrated back edge has a corresponding widened incision encountered.

Der Erfindung liegt die Erkenntnis zugrunde, daß ein zweiseitig gezahntes Metallsägeblatt nahezu unzerbrechlich ist, wenn :die von den Zahnlücken ausgehende Kerbwirkung unterhalb, der Zahnschneiden unterbrochen wird.The invention is based on the knowledge that a two-sided toothed The metal saw blade is almost unbreakable if: the one emanating from the gaps between the teeth Notch effect below the tooth cutting is interrupted.

Gegenstand der Erfindung ist ein aus :einem Tragkörper aus gewöhnlichem Stahl und :einer Zahnschneide :aus Schnellstahl bestehendes Ver#bundmetallsägeblatt,dessen Steifigkeit :erhöht und :dessen Kerbschlagempfindlichkeit :dadurch vermindert ist, :daß es beiderseits des Tragkörpers aus :gewöhnlichem Stahl je eine damit verbundene Zahnschneide aus Schnellstahl aufweist.The invention relates to: a support body made of ordinary Steel and: a tooth cutting edge: composite metal saw blade made of high speed steel, its Stiffness: increased and: whose notch impact sensitivity: is reduced as a result, : that there are on both sides of the support body made of: ordinary steel, one connected to it Has tooth cutting edge made of high-speed steel.

Ein Ausführungsbeispiel der Erfindung ist in Abb. i in Längsansicht und in: Abb. 2 im Querschnitt dargestellt.An embodiment of the invention is shown in Fig. I in a longitudinal view and in: Fig. 2 shown in cross section.

Das Metallsägeblatt besteht aus einem Tragkörper aus gewöhnlichem Stahl und je einer beiderseits desselben befestigten, nach dem Ausführungsbeispiel der Erfindung angeschweißten Zahnschneide b aus Schnellstahl. Zum -Zwecke der Herstellung wird :die an sich bekannte, einschneidige Schweißung zweischneidig vorgenommen. Die Zahnschneiden b könnten aber auch angenietet werden.The hacksaw blade consists of a support body made of ordinary Steel and one on each side of the same attached, according to the embodiment the invention welded tooth cutting edge b made of high-speed steel. For purposes of manufacture is: the well-known, single-edged weld is carried out with two-edged edges. The cutting edges b could also be riveted.

Diese Ausführung bietet neben einer Ersparnis an Schnellstahl eine erhöhte Bruchsicherheit gegenüber dem bekannten Metallsägeblatt, -dessen Tragkörper nur mit einer Schnellstahlschneide versehen. ist. Es hat sich gezeigt, daß der beiderseits mit einem verhältnismäßig starren spröden Schnellstahlstreifen versehene Tragkörper a einen. erheblich vergrößerten seitlichen Widerstand bekommt.In addition to saving on high-speed steel, this version offers a increased resistance to breakage compared to the known metal saw blade, its support body only provided with a high-speed steel cutting edge. is. It has been shown that both sides Carrying body provided with a relatively rigid, brittle high-speed steel strip a one. considerably increased lateral resistance.

Die auf Bruch gerichtete beiderseits von den Zahnlücken ausgehende Kerbwirkung wird durch die bruchfeste mittlere Längszone, wie sie durch .den Tragkörper ,aus gewöhnlichem Stahl gebildet wird, nahezu ausgeschaltet. Eine Verletzung der zweiten Zahnschneide beim Sägen tritt auch dann nicht ein, wenn die beiden angeschweißten Zahnschneiden b gleich breit sind.The one aimed at breakage on both sides starting from the tooth gaps The notch effect is created by the break-proof central longitudinal zone, as it is by the supporting body , formed from ordinary steel, is almost eliminated. A violation of the second tooth cutting edge when sawing does not occur even if the two are welded on Tooth cutting edges b are of the same width.

Claims (1)

PATENTANSPRUCH: Aus einem Tragkörper ;aus gewöhnlichem Stahl und einer daran befestigten Zahnschneide aus Schnellstahl bestehendes Verbundmetallsägeblatt, dadurch gekennzeichnet, :daß es beiderseits des Tragkörpers (a) je eine :damit verbundene Zahnschneide (b) aufweist. Angezogene Druckschriften: Deutsche Patentschriften Nr. 29o 55i, 6134o6, 815 4901 britische Patentschrift Nr. 574 8i3; USA.-Patentschrift Nr. 1 535 o96.PATENT CLAIM: A composite metal saw blade made of a carrier body, made of ordinary steel and a toothed cutting edge attached to it made of high-speed steel, characterized in that: on both sides of the carrier body (a) it has a toothed cutting edge (b) connected to it. References: German Patent Nos. 29o 55i, 6134o6, 815 4901 British Patent No. 574 8i3; U.S. Patent No. 1,535,096.
DEL10079A 1951-09-14 1951-09-14 A composite saw blade consisting of a support body made of ordinary steel and a toothed cutting edge made of high-speed steel Expired DE903402C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL10079A DE903402C (en) 1951-09-14 1951-09-14 A composite saw blade consisting of a support body made of ordinary steel and a toothed cutting edge made of high-speed steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL10079A DE903402C (en) 1951-09-14 1951-09-14 A composite saw blade consisting of a support body made of ordinary steel and a toothed cutting edge made of high-speed steel

Publications (1)

Publication Number Publication Date
DE903402C true DE903402C (en) 1954-02-04

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ID=7258285

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL10079A Expired DE903402C (en) 1951-09-14 1951-09-14 A composite saw blade consisting of a support body made of ordinary steel and a toothed cutting edge made of high-speed steel

Country Status (1)

Country Link
DE (1) DE903402C (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE290551C (en) *
US1535096A (en) * 1921-12-08 1925-04-28 Armstrong Blum Mfg Company Hack saw blade
DE613406C (en) * 1932-12-23 1935-05-18 Hans Kaltenbach Process for hardening saw bands and saw blades
GB574813A (en) * 1943-06-17 1946-01-22 Lerned Francis Ronan Improvements in or relating to metal cutting saws and method of making the same
DE815490C (en) * 1949-06-26 1951-10-01 Hermann Dipl-Ing Hauser Hardened machining tool and method of making the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE290551C (en) *
US1535096A (en) * 1921-12-08 1925-04-28 Armstrong Blum Mfg Company Hack saw blade
DE613406C (en) * 1932-12-23 1935-05-18 Hans Kaltenbach Process for hardening saw bands and saw blades
GB574813A (en) * 1943-06-17 1946-01-22 Lerned Francis Ronan Improvements in or relating to metal cutting saws and method of making the same
DE815490C (en) * 1949-06-26 1951-10-01 Hermann Dipl-Ing Hauser Hardened machining tool and method of making the same

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