DE59305967D1 - METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF CYLINDRICAL RODS WITH AT LEAST ONE INSIDE, HELICAL SHAPED CHANNEL, AND SINTER BLANK PRODUCED BY THIS PROCESS - Google Patents

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

Info

Publication number
DE59305967D1
DE59305967D1 DE59305967T DE59305967T DE59305967D1 DE 59305967 D1 DE59305967 D1 DE 59305967D1 DE 59305967 T DE59305967 T DE 59305967T DE 59305967 T DE59305967 T DE 59305967T DE 59305967 D1 DE59305967 D1 DE 59305967D1
Authority
DE
Germany
Prior art keywords
pin
blank
nozzle
compound
continuous production
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 - Lifetime
Application number
DE59305967T
Other languages
German (de)
Inventor
Joachim Heisinger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE59305967D1 publication Critical patent/DE59305967D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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).
DE59305967T 1992-04-08 1993-04-07 METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF CYLINDRICAL RODS WITH AT LEAST ONE INSIDE, HELICAL SHAPED CHANNEL, AND SINTER BLANK PRODUCED BY THIS PROCESS Expired - Lifetime DE59305967D1 (en)

Applications Claiming Priority (3)

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
PCT/EP1993/000860 WO1993020961A1 (en) 1992-04-08 1993-04-07 Process and device for the continuous production of cylindrical rods with at least one internal helical channel, and sinter blank made by this process

Publications (1)

Publication Number Publication Date
DE59305967D1 true DE59305967D1 (en) 1997-04-30

Family

ID=25913785

Family Applications (1)

Application Number Title Priority Date Filing Date
DE59305967T Expired - Lifetime DE59305967D1 (en) 1992-04-08 1993-04-07 METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF CYLINDRICAL RODS WITH AT LEAST ONE INSIDE, HELICAL SHAPED CHANNEL, AND SINTER BLANK PRODUCED BY THIS PROCESS

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
KR101084014B1 (en) * 2003-06-04 2011-11-16 쎄코 툴스 에이비 Method and a device for manufacturing a blank for a tool
CN1298451C (en) * 2005-06-16 2007-02-07 上海交通大学 Spiral extrusion shaping and processing apparatus
CN1298449C (en) * 2005-06-16 2007-02-07 上海交通大学 Spiral extrusion shaping method
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, De
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
WO1993020961A1 (en) 1993-10-28
EP0634959B1 (en) 1997-03-26
JPH08502015A (en) 1996-03-05
JP2004339610A (en) 2004-12-02
ATE150675T1 (en) 1997-04-15
JP3662249B2 (en) 2005-06-22
EP0634959A1 (en) 1995-01-25

Similar Documents

Publication Publication Date Title
DE4120165C2 (en) Extrusion tool for producing a hard metal or ceramic rod
DE19943192A1 (en) Tubular heating element
DE1640436B2 (en) Process for the production of electrical film resistors
EP1042086B1 (en) Method for the production of a drilling tool for machine tools
DE2059179C3 (en) Process for the production of a fiber-reinforced molded body and application of the process for the production of special molded bodies
DE59305967D1 (en) METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF CYLINDRICAL RODS WITH AT LEAST ONE INSIDE, HELICAL SHAPED CHANNEL, AND SINTER BLANK PRODUCED BY THIS PROCESS
DE4427282A1 (en) High frequency cable
DE3046471A1 (en) Heated nozzle core for injection moulding machine - has helical heating element laid in groove on outer face of core
EP3776608B1 (en) Method for producing a coiled electrically conductive body
EP0306052B1 (en) Method for manufacturing a brush, particularly a mascara brush
EP0069896A1 (en) Method for producing a superconducting hollow conductor
DE2809266C3 (en) Device for producing a coaxial cable core
US4489588A (en) Apparatus for manufacturing screw workpieces of a tube semi-product
DE10229325B4 (en) Extrusion tool for producing a cylindrical body consisting of plastic mass
DE3448025C3 (en) Process for the manufacture of rotors for screw compressors
DE2511302B2 (en) Process for the production of a shaft seal
DE1962926A1 (en) Brush and method of making it
DE10134252C1 (en) Insulated copper cable with smoothly-varied sheathing thickness, has economically-produced conical transitions including small acute angle with cable axis
DE3309597C1 (en) Insulated screwdriver
JPS5875825A (en) Manufacture of chip inductor
DE3141128C1 (en) Method for producing an electrical resistance heating element
DE1452455A1 (en) Process for the production of an internally finned heat exchanger tube and heat exchanger tube
DE2540884A1 (en) Venting nozzles for plastics processing moulds - consisting of bundles of tubes bonded together in an outer tube
DE8616403U1 (en) Device for the production of coils from thermoplastic strand material
DE19800109C2 (en) Sausage, in particular roast or grilled sausage, and method and device for their production

Legal Events

Date Code Title Description
8364 No opposition during term of opposition