AT56543B - Die for forging twist drills. - Google Patents

Die for forging twist drills.

Info

Publication number
AT56543B
AT56543B AT56543DA AT56543B AT 56543 B AT56543 B AT 56543B AT 56543D A AT56543D A AT 56543DA AT 56543 B AT56543 B AT 56543B
Authority
AT
Austria
Prior art keywords
die
forging
twist drills
groove
grooves
Prior art date
Application number
Other languages
German (de)
Inventor
Stefan Hirmann
Original Assignee
Stefan Hirmann
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 Stefan Hirmann filed Critical Stefan Hirmann
Application granted granted Critical
Publication of AT56543B publication Critical patent/AT56543B/en

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  • Forging (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Gesenk zum Schmieden von Spiralbohrern. 



   Den Gegenstand der vorliegenden Erfindung bildet ein Gesenk zum Schmieden von Spiralbohrern, welches sich von den bisherigen Gesenken dieser Art dadurch unterscheidet, dass in den Gesenkrinnen vor dem zum Fertigschmieden der Bohrernut dienenden schraubenförmigen Wulst ein zum Vorschmieden der Nut bestimmter Wulst vorgesehen ist, was den bedeutenden Vorteil sichert, dass das Vor- und Fertigschmieden der Bohrernut, das bisher zeitlich und örtlich getrennt erfolgen musste, nunmehr in ein und derselben Gesenkrinne und als einzige Operation in einer Hitze bewirkt werden kann. 



   Auf der Zeichnung ist das Gesenk in einem Ausführungsbeispiele dargestellt, und zwar zeigen Fig.   l   und 2 die beiden Gesenkhälften in perspektivischer Ansicht und Fig. 3 und 4 Querschnitte durch die untere Gesenkhälfte.   d1   und d2 bezeichnet die zur Einarbeitung der schraubenförmigen Bohrernuten in das Werkstück dienenden Wulste in den beiden Gesenkhälften m1 und m2, denen in derselben Gesenkrinne Vorwulste f1 bzw. f2 vorausgehen. Diese Wulste dienen zum Vorschmieden der Nuten und besitzen in der Mitte vorteilhaft einen geringeren Querschnitt als die Wulste   d1   und   d2   zum Fertigschmieden der Nuten. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Die for forging twist drills.



   The subject of the present invention is a die for forging twist drills, which differs from the previous dies of this type in that in the die grooves in front of the helical bead used to finish forging the drill groove, a bead intended for pre-forging the groove is provided The advantage ensures that the pre-forging and final forging of the drill groove, which previously had to be carried out separately in terms of time and location, can now be carried out in one and the same die groove and as a single operation in one heat.



   In the drawing, the die is shown in an exemplary embodiment, namely, FIGS. 1 and 2 show the two die halves in perspective view and FIGS. 3 and 4 show cross sections through the lower die half. d1 and d2 denote the bulges in the two die halves m1 and m2 which are used to work the helical drill grooves into the workpiece and which are preceded by bulges f1 and f2 in the same die channel. These beads are used for pre-forging the grooves and advantageously have a smaller cross-section in the middle than the beads d1 and d2 for finish forging the grooves.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Gesenk zum Schmieden von Spiralbohrern, dadurch gekennzeichnet, dass in jeder der Gesenkrinnen vor dem zum Fertigschmieden der Bohrernut dienenden schraubenförmigen EMI1.1 EMI1.2 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Die for forging twist drills, characterized in that in each of the die grooves in front of the helical groove which is used to finish forging the drill groove EMI1.1 EMI1.2 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT56543D 1910-10-15 1910-10-15 Die for forging twist drills. AT56543B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT56543T 1910-10-15

Publications (1)

Publication Number Publication Date
AT56543B true AT56543B (en) 1912-11-25

Family

ID=3578172

Family Applications (1)

Application Number Title Priority Date Filing Date
AT56543D AT56543B (en) 1910-10-15 1910-10-15 Die for forging twist drills.

Country Status (1)

Country Link
AT (1) AT56543B (en)

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