DE1031091B - Process for the production of rod-shaped workpieces, especially twist drills, with two diametrically opposite longitudinal grooves - Google Patents

Process for the production of rod-shaped workpieces, especially twist drills, with two diametrically opposite longitudinal grooves

Info

Publication number
DE1031091B
DE1031091B DEM29044A DEM0029044A DE1031091B DE 1031091 B DE1031091 B DE 1031091B DE M29044 A DEM29044 A DE M29044A DE M0029044 A DEM0029044 A DE M0029044A DE 1031091 B DE1031091 B DE 1031091B
Authority
DE
Germany
Prior art keywords
diametrically opposite
longitudinal grooves
opposite longitudinal
rod
shaped workpieces
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.)
Pending
Application number
DEM29044A
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.)
HANS MUELLER VOLLMERING
Original Assignee
HANS MUELLER VOLLMERING
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 HANS MUELLER VOLLMERING filed Critical HANS MUELLER VOLLMERING
Priority to DEM29044A priority Critical patent/DE1031091B/en
Publication of DE1031091B publication Critical patent/DE1031091B/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes
    • B21K5/04—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes twisting-tools, e.g. drills, reamers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers

Landscapes

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

Description

In Betracht gezogene Druckschriften:
Britische Patentschrift Nr. 631 438;
französische Patentschrift Nr. 525 170.Considered publications:
British Patent No. 631,438;
French patent specification No. 525 170.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (2)

PatentANSPKücHE:PATENT APPROACH: 1. Verfahren zur Herstellung von stabförmigen Werkstücken, insbesondere Spiralbohrern, mit zwei sich diametral gegenüberliegenden Längsnuten durch in Längsrichtung fortschreitendes Hämmern zwischen kreuzweise einwirkenden und den Fertigquerschnitt gemeinsam einschließenden Hämmergesenken, dadurch gekennzeichnet, daß die Profilrücken des Werkstückes fertig eingeschlossen werden, bevor und bis die Profileinbuchtungen fertig geformt sind.1. A method for producing rod-shaped workpieces, in particular twist drills, with two diametrically opposite longitudinal grooves by progressing in the longitudinal direction Hammer between cross-acting and jointly enclosing the finished cross-section Hammering dies, characterized in that the profile backs of the workpiece are completely enclosed before and until the profile indentations are completely formed. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß von einem Stabwerkstück ausgegangen wird, dessen Querschnitt dem des gehämmerten Endprofils annähernd gleich ist.2. The method according to claim 1, characterized in that it is assumed that a bar workpiece whose cross-section is approximately the same as that of the hammered end profile.
DEM29044A 1952-10-24 1952-10-24 Process for the production of rod-shaped workpieces, especially twist drills, with two diametrically opposite longitudinal grooves Pending DE1031091B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM29044A DE1031091B (en) 1952-10-24 1952-10-24 Process for the production of rod-shaped workpieces, especially twist drills, with two diametrically opposite longitudinal grooves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM29044A DE1031091B (en) 1952-10-24 1952-10-24 Process for the production of rod-shaped workpieces, especially twist drills, with two diametrically opposite longitudinal grooves

Publications (1)

Publication Number Publication Date
DE1031091B true DE1031091B (en) 1958-05-29

Family

ID=7300581

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM29044A Pending DE1031091B (en) 1952-10-24 1952-10-24 Process for the production of rod-shaped workpieces, especially twist drills, with two diametrically opposite longitudinal grooves

Country Status (1)

Country Link
DE (1) DE1031091B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR525170A (en) * 1920-09-28 1921-09-16 Thomas Morgan Rees Improvements in the process and means for forming spiral flutes or coarse threads on bars for the production of twist drills and for other purposes
GB631438A (en) * 1947-09-03 1949-11-02 Samuel Smith Improvements in apparatus for making fluted drills, bits, taps, reamers and the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR525170A (en) * 1920-09-28 1921-09-16 Thomas Morgan Rees Improvements in the process and means for forming spiral flutes or coarse threads on bars for the production of twist drills and for other purposes
GB631438A (en) * 1947-09-03 1949-11-02 Samuel Smith Improvements in apparatus for making fluted drills, bits, taps, reamers and the like

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