DE900407C - Process in the manufacture of thread cutting dies or drills - Google Patents

Process in the manufacture of thread cutting dies or drills

Info

Publication number
DE900407C
DE900407C DEK6086A DEK0006086A DE900407C DE 900407 C DE900407 C DE 900407C DE K6086 A DEK6086 A DE K6086A DE K0006086 A DEK0006086 A DE K0006086A DE 900407 C DE900407 C DE 900407C
Authority
DE
Germany
Prior art keywords
drills
thread cutting
speed steel
manufacture
welding
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
DEK6086A
Other languages
German (de)
Inventor
Willi Blank
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.)
Kirchmann & Co
Original Assignee
Kirchmann & Co
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 Kirchmann & Co filed Critical Kirchmann & Co
Priority to DEK6086A priority Critical patent/DE900407C/en
Application granted granted Critical
Publication of DE900407C publication Critical patent/DE900407C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/025—Connecting cutting edges or the like to tools; Attaching reinforcements to workpieces, e.g. wear-resisting zones to tableware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/48—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools threading tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Description

In der Technik finden in großem Umfang Schneidwerkzeuge; wie Sägen, Fräser usw., Verwendung, bei denen der Grundkörper aus einem Material minderer Qualität besteht, während die Schneidzähne aus Schnellarbeitsstahl oder Hartmetall angebracht sind. Die Befestigung dieser Schneidzähne erfolgt durch Schrauben, Nieten, Löten oder Schweißen. Die auf diese Weise hergestellten Werkzeuge sind wegen der erforderlichen genauen Zerspannungsarbeiten sehr teuer.Cutting tools are found to a large extent in technology; like saws, Milling cutters, etc., use in which the base body is made of an inferior quality material consists, while the cutting teeth are made of high-speed steel or carbide are. These cutting teeth are attached by screws, rivets, soldering or welding. The tools made in this way are required because of the precise machining work is very expensive.

Gegenstand der Erfindung ist ein Verfahren zur Herstellung von Schnellarbeitsstahl sparenden Gewindeschneidbacken und -bohrern, wobei in der Weise verfahren wird, daß Stangenabschnitte aus gewöhnlichem Stahl mit Bohrungen versehen werden, die an den Stellen liegen, die den Schneidstellen entsprechen, diese mit Schnellarbeitsstahl bestückt und verschweißt werden und sodann die Form .der fertigen Werkzeuge erhalten.The invention relates to a process for the production of high-speed steel saving thread cutting dies and drills, proceeding in the manner that rod sections made of ordinary steel are provided with holes that lie at the points that correspond to the cutting points, these with high-speed steel be fitted and welded and then receive the shape of the finished tools.

Das Verschweißen erfolgt mittels Feuerschweißung in der Weise, daß auf den Verbundkörper nach dem Vorwärmen bis etwa 8o0'°' ein Schnellstahlschweißpulver aufgestreut wird. Hierauf wird der Verbundkörper auf Schweißtemperatur erhitzt. Infolge der verschiedenen Ausdehnungskoeffizienten entsteht zwischen den eingesetzten Bolzen und dem Grundkörper ein Spalt von einigen Zehntelmillimetern. In diesen Spalt dringt infolge der Kapillarwirkung zunächst das im Schweißpulver vorhandene Flußmittel ein. Beim Erreichen der Schmelztemperatur des Metalls im Schweißpulver erfolgt dann die Schweißung.The welding takes place by means of fire welding in such a way that a high-speed steel welding powder on the composite body after preheating up to about 8o0 '°' is sprinkled. The composite body is then heated to welding temperature. As a result of the different expansion coefficients between the used Bolt and the base body a gap of a few tenths of a millimeter. In this gap Due to the capillary action, the flux present in the welding powder penetrates first a. When the melting temperature of the metal in the welding flux is reached, it then takes place the weld.

Das Verfahren ermöglicht die Bestückung von Gewindeschneidbacken und -bohrern. Die Abb. i und 2 zeigen gemäß der Erfindung Anwendungsbeispiele für Gewindebacken und Gewindebohrer, wobei a den Rohling und b das fertige Werkzeug im Schnitt darstellt. Der eingeschweißte Schnellarbeitsstahl ist mit c bezeichnet.The process enables the assembly of thread cutting jaws and -drills. Figs. I and 2 show application examples for threaded jaws according to the invention and taps, where a shows the blank and b shows the finished tool in section. The welded high-speed steel is labeled c.

Claims (1)

PATENTANSPRUCH: Verfahren bei der Herstellung von Gewindeschneidbacken oder -bohrern, die einen Grundkörper aus gewöhnlichem Stahl und Schneiden aus Schnellarbeitsstahl aufweisen, durch Verschweißen des Schnellarbeitsstahles mit dem Grundkörper, dadurch gekennzeichnet, daß Stangenabschnitte aus gewöhnlichem Stahl in Bohrungen, die an Stellen liegen, die den Schneidstellen entsprechen, mit Schnellarbeitsstahlbolzen bestückt, anschließend mit diesen verschweißt werden und sodann die Formen der fertigen Werkzeuge erhalten. '- Angezogene Druckschriften: Deutsche Patentschriften Nr. 322 o61, 556 qq.i.PATENT CLAIM: A method in the production of thread cutting jaws or drills, which have a base body made of ordinary steel and cutting edges made of high-speed steel, by welding the high-speed steel to the base body, characterized in that rod sections made of ordinary steel in bores that are at points that Corresponding cutting points, equipped with high-speed steel bolts, then welded to these and then obtained the shapes of the finished tools. - Referred publications: German patent specifications No. 322 061, 556 qq.i.
DEK6086A 1950-08-27 1950-08-27 Process in the manufacture of thread cutting dies or drills Expired DE900407C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK6086A DE900407C (en) 1950-08-27 1950-08-27 Process in the manufacture of thread cutting dies or drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK6086A DE900407C (en) 1950-08-27 1950-08-27 Process in the manufacture of thread cutting dies or drills

Publications (1)

Publication Number Publication Date
DE900407C true DE900407C (en) 1953-12-28

Family

ID=7211134

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK6086A Expired DE900407C (en) 1950-08-27 1950-08-27 Process in the manufacture of thread cutting dies or drills

Country Status (1)

Country Link
DE (1) DE900407C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009873B (en) * 1953-10-20 1957-06-06 Stahl Armaturen G M B H Forged valve housing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322061C (en) * 1919-01-23 1920-06-09 Karl Jaick Process for the production of twist drills made of low quality steel with a cutting plate made of high quality steel welded into a slot of the drill bit
DE556441C (en) * 1931-01-03 1932-08-08 Ohler Fa Joh F Cold circular saw blade with inserted or attached toothed segments or rings

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322061C (en) * 1919-01-23 1920-06-09 Karl Jaick Process for the production of twist drills made of low quality steel with a cutting plate made of high quality steel welded into a slot of the drill bit
DE556441C (en) * 1931-01-03 1932-08-08 Ohler Fa Joh F Cold circular saw blade with inserted or attached toothed segments or rings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009873B (en) * 1953-10-20 1957-06-06 Stahl Armaturen G M B H Forged valve housing

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