EP1186360B1 - Procédé et dispositif pour la fabrication d'éléments de visserie - Google Patents

Procédé et dispositif pour la fabrication d'éléments de visserie Download PDF

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Publication number
EP1186360B1
EP1186360B1 EP01117159A EP01117159A EP1186360B1 EP 1186360 B1 EP1186360 B1 EP 1186360B1 EP 01117159 A EP01117159 A EP 01117159A EP 01117159 A EP01117159 A EP 01117159A EP 1186360 B1 EP1186360 B1 EP 1186360B1
Authority
EP
European Patent Office
Prior art keywords
rolling
reducing surface
roller
pair
reduced
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
EP01117159A
Other languages
German (de)
English (en)
Other versions
EP1186360A3 (fr
EP1186360A2 (fr
Inventor
Andreas Wunderlich
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.)
Reisser Schraubentechnik GmbH
Original Assignee
Reisser Schraubentechnik GmbH
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 Reisser Schraubentechnik GmbH filed Critical Reisser Schraubentechnik GmbH
Priority to DK01117159T priority Critical patent/DK1186360T3/da
Publication of EP1186360A2 publication Critical patent/EP1186360A2/fr
Publication of EP1186360A3 publication Critical patent/EP1186360A3/fr
Application granted granted Critical
Publication of EP1186360B1 publication Critical patent/EP1186360B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/027—Rolling of self-tapping screws

Definitions

  • the invention relates to a method for producing a bolt element according to the preamble of claim 1 and a rolling die pair after the The preamble of claim 10.
  • a method and such Rolling die pair are known from EP A 0 428 317.
  • a trilobular screw is known (US-A-5242253), in which at the end remote from the screw head of the screw a cylindrical Section is formed with a thread.
  • the invention is based on the object to a possibility create, bolt elements of this kind cheaper and with produce less equipment.
  • the invention proposes a method with the Features of claim 1 and a rolling die pair with the Features of claim 10 before. Further developments of the invention are The subject - matter of the dependent claims, the wording thereof as well as the Text of the abstract by reference to the content of Description is made.
  • the bolt can be with produce less equipment and time.
  • the material of the wire pin is displaced.
  • the invention now proposes to perform the reducing, that the displacement of this material gradually towards the free end of the bolt element takes place. If a screw would So the material displaced in the direction of the screw tip.
  • the invention proposes that with increasing rollers, the axial Length of the reduced section is extended. It will be at the beginning Therefore, the rolling process only a very small area in his Diameter reduced, and this area will gradually increased.
  • the Wire pin is rolled using two dies, of which at least one projecting from the rolling surface Reduction surface has.
  • This raised reduction surface serves to reduce the distance between the two dies, so that here a section with reduced diameter is rolled.
  • the Reduced reduction area in rolling device This should be stated be that the measured transverse to the rolling direction width with progressing rolling direction becomes larger. This serves the area reduced diameter axially as the rolling progresses extend.
  • the reduction surface starts very narrow, so that at the beginning of the Rolling the reduced area does not jerk too big forces occur.
  • the free end of the wire pin associated edge of the reduction runs obliquely opposite to the rolling direction. This can be taken care of be that the displacement of the excess material only in one Direction is performed, so the free end of the wire pin out.
  • the height of the reduction surface may, for example, increase be formed so that with increasing rolling not only the Diameter is gradually reduced, but also the axial length this area is enlarged. It may also be provided be that the height of the reduction surface is constant.
  • the invention can be used in particular for the production of screws be used, in which the wire pin before rolling with a Head is provided. Such a head can also be used for other things Bolt elements are attached.
  • the invention also proposes a rolling die pair with the features of claim 10 before. At least one of the two dies contains a Reduzier Structure, which raised relative to the other rolling surface is formed, so that here with correctly arranged pair of rolling dies the distance is reduced.
  • the reduction surface has a smooth surface.
  • the Reduction surface is designed such that their transversely to Rolling mill measured width seen in rolling device increases, the reduction so widened in rolling device.
  • the Reduction area starts narrow and then in rolling mill then widened to their desired length.
  • the reducing surface comprising part of the rolling die is removably formed to the Rolling dies also reduced for bolt elements without a section Diameter suitable to use. This is also the case Possibility to adjust the reduction diameter.
  • the reducing surface only over part of the extension of the rolling dies in the rolling apparatus extends.
  • FIG. 1 shows in perspective a rolling jaw of a rolling die pair.
  • the second rolling jaw would look similar and would be above this Rolling jaw be arranged.
  • the rolling die contains a rolling surface 2, in working condition of the rolling die pair of the other rolling die is facing.
  • On this rolling surface 2 are oblique to the longitudinal direction extending sharp-edged ribs 3 are formed with which a thread is rolled.
  • the formation of the rolling jaw is known.
  • the Wire pin is placed on the front left of the die and along the Rolled surface 2 rolled to the right rear. The rolling direction thus runs from left front to right rear and is indicated by the arrow 4.
  • the axial direction of the wire pin to be processed is perpendicular to this direction and parallel to the rolling surface 2, so in the figure left to right.
  • the wire pin is oriented so that free end pointing to the right.
  • the free end is the end of the Wire pin, which is remote from the head, in a screw so the Screw tip.
  • the area of reduced diameter is the Screw tip facing while the area of not reduced diameter facing the screw head.
  • This reduction surface 6 is an increase on the component 5 educated. It starts with a very narrow starting area 7, immediately after the beginning of the rolling die. Of this Beginning region 7 of the reduction area 6 widened, the Width means the extension transverse to the rolling device, ie transversely to the arrow 4. The broadening is designed so that the free End of the wire pin associated edge 8 of the reduction 6 inclined runs, while the head facing edge 9 of the reduction 6 runs in the rolling direction.
  • the length of the reduction surface 6 in the rolling direction is about one third of the longitudinal extent of the rolling die 1.
  • Die Reduction surface itself is flat and parallel to the rolling surface 2 is formed.
  • a strip area 10 Close to the rear end of the reducing 6 in rolling device a strip area 10, in which a ribbing is formed. With the help of this ribbing can in the area of the bolt element with reduced diameter rolled a coarse thread.
  • FIG. 2 shows, as already mentioned, a schematic cross section through a rolling die pair. It can be seen here that the each other facing surfaces of both rolling dies each have a Reduzier Chemistry. 6 exhibit. The edges 8 associated with the free end of the wire pin both reduction surfaces 6 form an inclined shoulder.
  • FIG 3 shows an example of a bolt element, which with a Rolling jaw according to the invention by the method according to the invention can be produced.
  • the bolt element in the example shown a screw, includes a first shaft portion 11 with a first Diameter, to which a second shaft portion 12 with a reduced diameter connects.
  • the free end of the screw forms a screw tip 13 which is cone-shaped.
  • On the Shank portion 11 is rolled a conventional screw thread, while in the screw portion 12, a coarse thread 14 is rolled is.
  • the actual screw tip contains in the embodiment 3 also still the coarse thread 14, while in the similar Embodiment of Figure 4 here is a continuation of the usual Screw thread is present.
  • the upper part is rolled, the lower part is reduced.
  • the angle of Reduzierbarke can thereby approx 20 ° instead of 6 ° to 10 °, as known in the art is.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Metal Rolling (AREA)
  • Metal Extraction Processes (AREA)

Claims (15)

  1. Procédé de production d'un élément-boulon cylindrique comportant deux sections de diamètre différent au cours duquel une pointe faite d'un fil métallique est tronçonnée,
    la pointe est placée entre deux joues (1) et laminée à un diamètre réduit dans la section correspondante,
    caractérisé en ce qu'un filetage à pas rapide est laminé sur la section au diamètre réduit après la réduction du diamètre et qu'un filetage est laminé sur la section non réduite de l'élément-boulon lors de la réduction de la section réduite.
  2. Procédé conforme à la revendication 1 au cours duquel le matériau en surplus de la pointe après la réduction est écarté en direction d'une extrémité libre de la pointe.
  3. Procédé conforme à la revendication 1 ou 2 au cours duquel la longueur axiale de la section au diamètre réduit est prolongée avec un laminage accéléré.
  4. Procédé conforme à l'une des revendications précédentes au cours duquel la pointe est laminée par deux joues (1) dont l'une au moins présente une surface de réduction (6) en saillie par rapport à sa surface primitive de fonctionnement (2).
  5. Procédé conforme à l'une des revendications précédentes dans lequel la surface de réduction (6) s'élargit dans le sens du laminage.
  6. Procédé conforme à la revendication 4 ou 5 dans lequel la surface de réduction (6) est d'abord étroite.
  7. Procédé conforme à l'une des revendications 4 à 6 dans lequel le bord (8) de la surface de réduction (6) correspondant à l'extrémité libre de la pointe est incliné par rapport au sens du laminage.
  8. Procédé conforme à l'une des revendications 4 à 7 dans lequel la hauteur de la surface de réduction (6) est constante par rapport à la surface de laminage (2).
  9. Procédé conforme à l'une des revendications précédentes au cours duquel la pointe est dotée d'une tête avant le laminage.
  10. Couple de joues pour la production d'un élément-boulon comportant deux sections de diamètre différent, avec
    une surface de laminage (2) sur chacune des joues (1) et
    une surface de réduction (6) sur au moins l'une des joues (1), faisant saillie par rapport à la surface de laminage (2) de la joue (1),
    caractérisé en ce que
    la surface de réduction (6) est suivie en long d'un nervurage (10) destiné à la formation d'un filetage à pas rapide (14).
  11. Couple de joues conforme à la revendication 10 dont la surface de réduction (6) présente une surface lisse.
  12. Couple de joues conforme à la revendication 10 ou 11 dont la surface de réduction (6) est formée de manière à s'élargir dans le sens du laminage.
  13. Couple de joues conforme à l'une des revendications 10 à 12 dont la surface de réduction (6) est d'abord étroite.
  14. Couple de joues conforme à l'une des revendications 10 à 13 dont la partie (5) de la joue (1) présentant la surface de réduction (6) est séparable.
  15. Couple de joues conforme à l'une des revendications 10 à 14 dont la surface de réduction (6) ne s'étend que sur une partie de la prolongation de la joue (1) dans le sens du laminage.
EP01117159A 2000-08-10 2001-07-14 Procédé et dispositif pour la fabrication d'éléments de visserie Expired - Lifetime EP1186360B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK01117159T DK1186360T3 (da) 2000-08-10 2001-07-14 Fremgangsmåde og indretning til fremstilling af boltelementer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10039011 2000-08-10
DE10039011A DE10039011A1 (de) 2000-08-10 2000-08-10 Verfahren und Vorrichtung zum Herstellen von Bolzenelementen

Publications (3)

Publication Number Publication Date
EP1186360A2 EP1186360A2 (fr) 2002-03-13
EP1186360A3 EP1186360A3 (fr) 2002-12-18
EP1186360B1 true EP1186360B1 (fr) 2005-03-16

Family

ID=7651944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01117159A Expired - Lifetime EP1186360B1 (fr) 2000-08-10 2001-07-14 Procédé et dispositif pour la fabrication d'éléments de visserie

Country Status (6)

Country Link
EP (1) EP1186360B1 (fr)
AT (1) ATE290934T1 (fr)
DE (2) DE10039011A1 (fr)
DK (1) DK1186360T3 (fr)
ES (1) ES2239639T3 (fr)
PT (1) PT1186360E (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10254319B3 (de) * 2002-11-21 2004-09-16 Duve Kaltformtechnik Gmbh Verfahren zum Herstellen einer Schraube mit einer Bohrspitze
DE102011076180A1 (de) * 2011-05-20 2012-11-22 Hilti Aktiengesellschaft Ankerbolzen und Herstellungsverfahren

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD33566A (fr) *
DE45391C (de) * AMERICAN Screw Co. by Edwin G. Awgell President in New-York Gewindewalzbacken
US2314390A (en) * 1939-08-17 1943-03-23 New Process Screw Corp Method and apparatus for rolling screws
GB2220721B (en) * 1988-07-11 1992-02-12 Austin Rover Group A method of making threaded fasteners
SU1637923A1 (ru) * 1988-12-05 1991-03-30 Предприятие П/Я М-5514 Инструмент дл одновременного накатывани резьбы и гладкой цилиндрической поверхности
JPH03161136A (ja) * 1989-11-14 1991-07-11 Shinjiyou Seisakusho:Kk コンクリート用アンカーボルトの製造方法及び該アンカーボルトの製造に用いる装置
US5242253A (en) * 1992-10-08 1993-09-07 Semblex Corporation Thread-forming screw
EP0682187A3 (fr) * 1994-04-13 1996-03-13 Bergner Richard Gmbh Co Méthode pour fabriquer une vis et ébauche de vis pour cette méthode.
JPH08108239A (ja) * 1994-10-05 1996-04-30 Toyota Motor Corp 転造ダイス
DE19632838A1 (de) * 1996-08-15 1998-02-19 Wuerth Adolf Gmbh & Co Kg Schraube mit einer selbstbohrenden Spitze

Also Published As

Publication number Publication date
DK1186360T3 (da) 2005-07-25
DE50105600D1 (de) 2005-04-21
EP1186360A3 (fr) 2002-12-18
EP1186360A2 (fr) 2002-03-13
ES2239639T3 (es) 2005-10-01
ATE290934T1 (de) 2005-04-15
PT1186360E (pt) 2005-06-30
DE10039011A1 (de) 2002-02-21

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