DE349392C - Drill with axially running longitudinal grooves - Google Patents

Drill with axially running longitudinal grooves

Info

Publication number
DE349392C
DE349392C DENDAT349392D DE349392DD DE349392C DE 349392 C DE349392 C DE 349392C DE NDAT349392 D DENDAT349392 D DE NDAT349392D DE 349392D D DE349392D D DE 349392DD DE 349392 C DE349392 C DE 349392C
Authority
DE
Germany
Prior art keywords
drill
longitudinal grooves
axially running
running longitudinal
grooves
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
DENDAT349392D
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of DE349392C publication Critical patent/DE349392C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B51/00Tools for drilling machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Description

Gegenstand vorliegender Erfindung ist ein Bohrer, vorzugsweise für Metall, welcher die gleichen günstigen Eigenschaften der bekannten Spiralbohrer, letzteren gegenüber aber den Vorzug der einfacheren Herstellungsweise und der Materialersparnis besitzt. Zu diesem Zwecke sind die Windungen in einzelne Teile zerlegt und diese Teile senkrecht übereinander angeordnet worden, so daßThe present invention is a drill, preferably for metal, which the same favorable properties of the well-known twist drills, compared to the latter but has the advantage of a simpler manufacturing method and material savings. For this purpose, the windings are broken down into individual parts and these parts are vertical have been arranged one above the other so that

ίο nunmehr die Herstellung durch Pressen im einfachen Gesenk erfolgen kann.ίο now the production by pressing in simple die can be done.

Wie aus der Zeichnung, welche in Abb. ι eine Vorderansicht, in Abb. 2 eine Seitenansicht und in Abb. 3 einen Querschnitt zeigt,As from the drawing, which in Fig. Ι a front view, in Fig. 2 is a side view and in Fig. 3 shows a cross-section,

iS hervorgeht, ist der Bohrer an zwei diametral gegenüberliegenden Längskanten sägezahnartig eingekerbt. Die Flächen d und c bilden, wie aus Abb. 2 ersichtlich, mit der senkrechten Druckrdchtung des oberen Gesenkstempels stumpfe Winkel, einerseits aus Herstellungsgründen, anderseits, um das Abrollen der Späne zu erleichtern, welche alsdann in den Längsnuten emporsteigen, b sind die Schneidkanten des Bohrers.As can be seen, the drill is notched like a sawtooth on two diametrically opposite longitudinal edges. As can be seen in Fig. 2, the surfaces d and c form obtuse angles with the vertical pressure direction of the upper die, on the one hand for manufacturing reasons, on the other hand to facilitate the unrolling of the chips, which then rise up in the longitudinal grooves, b are the cutting edges of the Drill.

Claims (1)

Patent-Anspruch:Patent claim: Bohrer mit achsial verlaufenden Längsnuten, dadurch gekennzeichnet, daß je eine Hälfte dieser Nuten sägezahnartig übereinander angebrachte Sehneidkanten aufweist. Drill with axially extending longitudinal grooves, characterized in that one each Half of these grooves has sawtooth-like cutting edges attached one above the other. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT349392D Drill with axially running longitudinal grooves Expired DE349392C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE349392T

Publications (1)

Publication Number Publication Date
DE349392C true DE349392C (en) 1922-03-02

Family

ID=6258479

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT349392D Expired DE349392C (en) Drill with axially running longitudinal grooves

Country Status (1)

Country Link
DE (1) DE349392C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028261A1 (en) * 1990-08-06 1992-02-13 Fischer Artur Werke Gmbh DRILLS FOR PRODUCING CYLINDRICAL DRILL HOLES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028261A1 (en) * 1990-08-06 1992-02-13 Fischer Artur Werke Gmbh DRILLS FOR PRODUCING CYLINDRICAL DRILL HOLES

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