ATE150675T1 - METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF CYLINDRICAL RODS WITH AT LEAST ONE INTERNAL, HELICAL CHANNEL, AND SINTER BLANK PRODUCED BY THIS METHOD - Google Patents

METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF CYLINDRICAL RODS WITH AT LEAST ONE INTERNAL, HELICAL CHANNEL, AND SINTER BLANK PRODUCED BY THIS METHOD

Info

Publication number
ATE150675T1
ATE150675T1 AT93908925T AT93908925T ATE150675T1 AT E150675 T1 ATE150675 T1 AT E150675T1 AT 93908925 T AT93908925 T AT 93908925T AT 93908925 T AT93908925 T AT 93908925T AT E150675 T1 ATE150675 T1 AT E150675T1
Authority
AT
Austria
Prior art keywords
internal
pin
blank
nozzle
compound
Prior art date
Application number
AT93908925T
Other languages
German (de)
Inventor
Joachim Heisinger
Original Assignee
Guehring Joerg
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
Priority claimed from DE19924211827 external-priority patent/DE4211827C2/en
Priority claimed from DE19924242336 external-priority patent/DE4242336A1/en
Application filed by Guehring Joerg filed Critical Guehring Joerg
Application granted granted Critical
Publication of ATE150675T1 publication Critical patent/ATE150675T1/en

Links

Classifications

    • 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
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/004—Article comprising helical form elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Powder Metallurgy (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

The description relates to a process for the continuous production of cyclindrical rods (24) with at least one and preferably a plurality of internal helical channels (26) of predetermined cross-section uniformly distributed around the periphery. This process is used especially in the production of a sintered metal or ceramic blank in which the plastic compound forming the blank is pressed out of a nozzle mouth (14), with the compound (12) flowing along the axis (44) of the helically twisted pin (40, 42) journal secured on a nozzle mandrel. To simplify the process and eliminate as far as possible the dependence of the result of extrusion on the extrusion process parameters, there is a rotatable cooling channel former in the nozzle aperture having at least one helically pretwisted pin (40, 42) rigidly attached to a shaft (30) at least at the securing point, thus being dimensionally stable. The helical pretwist exactly corresponds to the shape of the helix of the internal channels (26) to be formed in the blank. Thus a constant rotary impulse defined by the pitch of the helix is imposed on at least one pin (40, 42) by the plastic compound (12) flowing along its axis (44) essentially over its entire length, with the result that the compound (12) cannot be plastically deformed in the nozzle mouth (26).
AT93908925T 1992-04-08 1993-04-07 METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF CYLINDRICAL RODS WITH AT LEAST ONE INTERNAL, HELICAL CHANNEL, AND SINTER BLANK PRODUCED BY THIS METHOD ATE150675T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924211827 DE4211827C2 (en) 1992-04-08 1992-04-08 Method and extrusion tool for the continuous production of cylindrical rods with at least one internal, helical channel, and rod produced by this method
DE19924242336 DE4242336A1 (en) 1992-12-15 1992-12-15 Extrusion for cylindrical rods with at least one internal helical channel

Publications (1)

Publication Number Publication Date
ATE150675T1 true ATE150675T1 (en) 1997-04-15

Family

ID=25913785

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93908925T ATE150675T1 (en) 1992-04-08 1993-04-07 METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF CYLINDRICAL RODS WITH AT LEAST ONE INTERNAL, HELICAL CHANNEL, AND SINTER BLANK PRODUCED BY THIS METHOD

Country Status (5)

Country Link
EP (1) EP0634959B1 (en)
JP (2) JP3662249B2 (en)
AT (1) ATE150675T1 (en)
DE (1) DE59305967D1 (en)
WO (1) WO1993020961A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1628795B1 (en) * 2003-06-04 2010-08-18 Seco Tools AB Method and device for manufacturing a blank for a tool
CN1298449C (en) * 2005-06-16 2007-02-07 上海交通大学 Spiral extrusion shaping method
CN1298451C (en) * 2005-06-16 2007-02-07 上海交通大学 Spiral extrusion shaping and processing apparatus
CN102744282A (en) * 2012-07-19 2012-10-24 西北工业大学 Die for spiral divided-flow extrusion of magnesium alloy bar
CN103252679A (en) * 2013-05-20 2013-08-21 苏州瑞森硬质合金有限公司 Efficient spiral-shaped inner cooling bar for machining cutting knife
FR3131544B1 (en) * 2021-12-30 2024-01-05 Tech Avancees Et Membranes Industrielles Device and method for manufacturing by extrusion a porous support with a rectilinear central channel and non-rectilinear channels

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8717444U1 (en) * 1987-04-30 1989-01-12 Fried. Krupp Gmbh, 4300 Essen Extrusion tool for producing a drill blank with at least one internal, spiral-shaped flushing bore
AT400687B (en) * 1989-12-04 1996-02-26 Plansee Tizit Gmbh METHOD AND EXTRACTION TOOL FOR PRODUCING A BLANK WITH INNER BORE
DE4120165C2 (en) * 1990-07-05 1995-01-26 Friedrichs Konrad Kg Extrusion tool for producing a hard metal or ceramic rod
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

Also Published As

Publication number Publication date
DE59305967D1 (en) 1997-04-30
JP2004339610A (en) 2004-12-02
JP3662249B2 (en) 2005-06-22
WO1993020961A1 (en) 1993-10-28
JPH08502015A (en) 1996-03-05
EP0634959B1 (en) 1997-03-26
EP0634959A1 (en) 1995-01-25

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