DE349392C - Drill with axially running longitudinal grooves - Google Patents
Drill with axially running longitudinal groovesInfo
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools 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)
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)
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 |
-
0
- DE DENDAT349392D patent/DE349392C/en not_active Expired
Cited By (1)
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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