EP0288780A3 - Extrusion tool for making a drill blank with at least one internal helical flush bore - Google Patents

Extrusion tool for making a drill blank with at least one internal helical flush bore Download PDF

Info

Publication number
EP0288780A3
EP0288780A3 EP88105349A EP88105349A EP0288780A3 EP 0288780 A3 EP0288780 A3 EP 0288780A3 EP 88105349 A EP88105349 A EP 88105349A EP 88105349 A EP88105349 A EP 88105349A EP 0288780 A3 EP0288780 A3 EP 0288780A3
Authority
EP
European Patent Office
Prior art keywords
mandrel
extrusion
mold chamber
nozzle
inlet portion
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.)
Granted
Application number
EP88105349A
Other languages
German (de)
Other versions
EP0288780B1 (en
EP0288780A2 (en
Inventor
Peter Cleve
Alfons Lomberg
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.)
Fried Krupp AG
Original Assignee
Fried Krupp AG
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 Fried Krupp AG filed Critical Fried Krupp AG
Priority to AT88105349T priority Critical patent/ATE69744T1/en
Publication of EP0288780A2 publication Critical patent/EP0288780A2/en
Publication of EP0288780A3 publication Critical patent/EP0288780A3/en
Application granted granted Critical
Publication of EP0288780B1 publication Critical patent/EP0288780B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/10—Making finned tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • B21C23/147—Making drill blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Extrusion Of Metal (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Drilling Tools (AREA)
  • Powder Metallurgy (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Forging (AREA)

Abstract

An extrusion tool for making a drill bit blank provided with an internal rinsing bore extending helically in a longitudinal direction of the drill bit blank, includes a nozzle having an inner wall defining a throughgoing axial bore through which a malleable material is passed in a direction of extrusion parallel to the tool axis. The axial bore forms an inlet portion and a mold chamber adjoining the inlet portion downstream thereof as viewed in the direction of extrusion. There is further provided a mandrel situated in the inlet portion; a resiliently deformable wire supported by the mandrel and projecting into the mold chamber; and a helical device provided on the inner wall in the mold chamber for twisting the malleable material as it passes through the mold chamber. There is further provided a clamping device having a tightened state for immobilizing the nozzle and the mandrel with respect to one another during extrusion operation. In the loosened state of the clamping device a positional adjustment of the nozzle with respect to the mandrel may be made.
EP88105349A 1987-04-30 1988-04-02 Extrusion tool for making a drill blank with at least one internal helical flush bore Expired - Lifetime EP0288780B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88105349T ATE69744T1 (en) 1987-04-30 1988-04-02 EXTRUSION TOOL FOR PRODUCTION OF A DRILL BLANK WITH AT LEAST ONE INTERNAL, HELICAL FLUSHING HOLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3714479 1987-04-30
DE19873714479 DE3714479A1 (en) 1987-04-30 1987-04-30 EXTRACTION TOOL FOR PRODUCING A DRILL BLANK WITH AT LEAST ONE INTERNAL, SPIRAL-WALLED RINSING HOLE

Publications (3)

Publication Number Publication Date
EP0288780A2 EP0288780A2 (en) 1988-11-02
EP0288780A3 true EP0288780A3 (en) 1990-06-13
EP0288780B1 EP0288780B1 (en) 1991-11-27

Family

ID=6326617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105349A Expired - Lifetime EP0288780B1 (en) 1987-04-30 1988-04-02 Extrusion tool for making a drill blank with at least one internal helical flush bore

Country Status (5)

Country Link
US (1) US4831859A (en)
EP (1) EP0288780B1 (en)
JP (1) JPS63278612A (en)
AT (1) ATE69744T1 (en)
DE (2) DE8717444U1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814687A1 (en) * 1988-04-30 1989-11-09 Krupp Widia Gmbh EXTRACTION TOOL
AT400687B (en) * 1989-12-04 1996-02-26 Plansee Tizit Gmbh METHOD AND EXTRACTION TOOL FOR PRODUCING A BLANK WITH INNER BORE
US5000025A (en) * 1990-04-30 1991-03-19 Brazeway, Inc. Extrusion machinery
DE4120166C2 (en) * 1991-06-19 1994-10-06 Friedrichs Konrad Kg Extrusion tool for producing a hard metal or ceramic rod with twisted inner holes
EP0634959B1 (en) * 1992-04-08 1997-03-26 Gühring, Jörg, Dr. Process and device for the continuous production of cylindrical rods with at least one internal helical channel, and sinter blank made by this process
US5220791A (en) * 1992-06-01 1993-06-22 Antonio Bulzomi Heat resistant work shoe
SE516268C2 (en) * 1999-06-03 2001-12-10 Seco Tools Ab Method and apparatus with radially movable jaws for extrusion of rotating tools
US6878069B2 (en) * 2003-06-05 2005-04-12 Sps Technologies, Inc. Helical groove fasteners and methods for making same
SE527475C2 (en) * 2004-05-04 2006-03-21 Sandvik Intellectual Property Method and apparatus for manufacturing a drill bit or milling blank
CN103447339A (en) * 2013-08-23 2013-12-18 浙江工业大学 Triaxial high-frequency composite flutter cold extrusion die

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422994A (en) * 1944-01-03 1947-06-24 Carboloy Company Inc Twist drill
US2954121A (en) * 1955-03-14 1960-09-27 Donald O Benson Extrusion of spirally formed article
US3605475A (en) * 1969-06-19 1971-09-20 Nat Machinery Co The Method and apparatus for extruding gear blanks
US4059031A (en) * 1974-03-28 1977-11-22 Erdelyi Frank F Method and apparatus for the production of machine tools
DE8536805U1 (en) * 1985-10-31 1986-08-21 Fried. Krupp Gmbh, 4300 Essen Extrusion tool for the production of a hard metal or ceramic drill bit blank

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1325301A (en) * 1919-12-16 of paris
US3242712A (en) * 1961-12-04 1966-03-29 Gen Dynamics Corp Apparatus for the forming of articles
GB971398A (en) * 1962-08-14 1964-09-30 William Shiel Caisley Improvements relating to the extrusion of fluted rod-like articles
US3186210A (en) * 1963-01-21 1965-06-01 Cleveland Twist Drill Co Extrusion die
US3302440A (en) * 1963-03-20 1967-02-07 Schloemann Ag Extrusion presses, particularly cable-sheathing presses
JPS441244Y1 (en) * 1966-02-16 1969-01-18
US3363469A (en) * 1966-03-29 1968-01-16 Mose S. Crane Segmented measuring cup
JPS61227101A (en) * 1985-03-29 1986-10-09 Mitsubishi Metal Corp Extrusion molding machine
DE3600681A1 (en) * 1985-10-31 1987-05-07 Krupp Gmbh HARD METAL OR CERAMIC DRILL BLANK AND METHOD AND EXTRACTION TOOL FOR ITS PRODUCTION
DE8530884U1 (en) * 1985-10-31 1986-08-14 Fried. Krupp Gmbh, 4300 Essen Carbide or ceramic drill bit blank

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422994A (en) * 1944-01-03 1947-06-24 Carboloy Company Inc Twist drill
US2954121A (en) * 1955-03-14 1960-09-27 Donald O Benson Extrusion of spirally formed article
US3605475A (en) * 1969-06-19 1971-09-20 Nat Machinery Co The Method and apparatus for extruding gear blanks
US4059031A (en) * 1974-03-28 1977-11-22 Erdelyi Frank F Method and apparatus for the production of machine tools
DE8536805U1 (en) * 1985-10-31 1986-08-21 Fried. Krupp Gmbh, 4300 Essen Extrusion tool for the production of a hard metal or ceramic drill bit blank

Also Published As

Publication number Publication date
DE3714479A1 (en) 1988-11-17
JPH0450085B2 (en) 1992-08-13
US4831859A (en) 1989-05-23
DE3714479C2 (en) 1989-06-15
DE8717444U1 (en) 1989-01-12
EP0288780B1 (en) 1991-11-27
JPS63278612A (en) 1988-11-16
ATE69744T1 (en) 1991-12-15
EP0288780A2 (en) 1988-11-02

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