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EP0417416A2 - Tête axiale à rouler les filets - Google Patents

Tête axiale à rouler les filets Download PDF

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Publication number
EP0417416A2
EP0417416A2 EP90112909A EP90112909A EP0417416A2 EP 0417416 A2 EP0417416 A2 EP 0417416A2 EP 90112909 A EP90112909 A EP 90112909A EP 90112909 A EP90112909 A EP 90112909A EP 0417416 A2 EP0417416 A2 EP 0417416A2
Authority
EP
European Patent Office
Prior art keywords
thread
rolling head
thread rolling
axial thread
eccentric
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.)
Withdrawn
Application number
EP90112909A
Other languages
German (de)
English (en)
Other versions
EP0417416A3 (en
Inventor
Uwe Schunk
Wolfgang Hahn
Eberhart Krueger
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.)
Fette GmbH
Original Assignee
Wilhelm Fette 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 Wilhelm Fette GmbH filed Critical Wilhelm Fette GmbH
Publication of EP0417416A2 publication Critical patent/EP0417416A2/fr
Publication of EP0417416A3 publication Critical patent/EP0417416A3/de
Withdrawn legal-status Critical Current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
    • B21H3/04—Making by means of profiled-rolls or die rolls
    • B21H3/042—Thread-rolling heads
    • B21H3/044—Thread-rolling heads working axially

Definitions

  • the innovation relates to an axial thread rolling head which is provided with thread rollers which are adjustable at a distance from one another and which are rotatably mounted on eccentrics, which are each carried by a bearing pin.
  • Such rolling heads are used in particular for producing threads on screws or other workpieces, such as angular or T-shaped connecting pieces, the legs of which are designed as shafts to be provided with a thread.
  • the thread rolling head is fed axially to the workpiece or the workpiece is axially inserted into the thread rolling head when a thread is rolled.
  • the thread rolls are mounted so as to be adjustable radially or transversely to one another.
  • the thread rolls sit on eccentrics that are supported by bearing bolts.
  • the bearing bolts are mounted on both sides of a thread roll, on the one hand in the housing of the thread rolling head and on the other hand in a front plate which is on the side of the threaded bushing facing away from the housing and is connected to the housing of the rolling head by spacing screws.
  • a front plate instead of such a front plate, however, other holders of thread rolls are also possible, in which, however, the eccentric of a thread roll is also supported at both ends.
  • the known thread rolling heads of the type described above generally have the disadvantage that when rolling a thread on a workpiece shank, the thread cannot be rolled up to a base body adjoining the shank, but only up to a distance which corresponds at least to the thickness of the front plate , provided that the base body adjoining the shank of the workpiece has a larger diameter than the shank.
  • such workpieces can be provided with a thread that almost reaches the base body if an eccentric is designed as an end journal of a bearing pin and is only supported on one side, that is to say, in contrast to known arrangements, not on two sides.
  • the innovation eliminates the front plate previously considered necessary, the thickness of which reduced the possible thread length to be produced or other mounts on the side of a thread roller facing away from the housing.
  • the eccentric is preferably connected to a bearing pin, which is held in the housing of the rolling head by two adjacent pivot bearings, which are preferably axially spaced from one another and are designed as needle bearings, in order to also absorb the load from higher torques in a compact design can.
  • the axial thread rolling head 1 shown in the drawing is provided for its clamping in a machine tool with a shaft 2 which carries a plate 5.
  • a housing 3 is connected to the plate 5 by screws 6.
  • adjustable bearing bolts 30 are provided, each of which is rotatably held about its axis 41 by two needle bearings 44 and 46 which are axially spaced from one another.
  • the adjustable bearing bolts 30 each have an eccentric pin 31 on which a threaded roller 32 with a rotary bearing 13 is mounted.
  • the thread rolls32 are interchangeable.
  • Screws 33 are provided for their mounting, which extend through a cover 34 into a threaded bore of an eccentric pin 31.
  • the screws 33 are arranged centrally to the eccentric pin 31, so that their axis 42 and thus the axis of the eccentric pin 31 is slightly offset from the axis of rotation 41 of a bearing pin 30. By rotating the bearing pin 30, the center distance of the threaded rollers 32 can therefore be adjusted.
  • a plate-shaped collar 40 at the rear end of a bearing bolt 30, which is supported on the housing 3, and an axial bearing 26 on the rear side of the thread rollers 32 also serve to secure and support the thread rollers 32.
  • the workpiece 60 When rolling a thread 63 on a workpiece 60, the workpiece 60 is either fed axially to the thread rolling head 1 or the thread rolling head 1 is fed axially to the workpiece according to the arrow 51. If either the thread rolling head 1 or the workpiece 60 is set in rotation, then a thread is produced with the thread 50 of the individual thread rollers 32 on a threaded connection 61 of the workpiece, which extends almost directly to the base body 62 in a length of L 1, whereby only a very narrow remaining distance L2 remains relative to the base body 62, so that the thread is longer and closer to the base body 62 than in a known axial thread rolling head, in which the thread rollers 32 are also mounted on their side facing away from the housing 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
EP19900112909 1989-09-09 1990-07-06 Axial thread rolling head Withdrawn EP0417416A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8910769U 1989-09-09
DE8910769U DE8910769U1 (de) 1989-09-09 1989-09-09 Axialgewinderollkopf

Publications (2)

Publication Number Publication Date
EP0417416A2 true EP0417416A2 (fr) 1991-03-20
EP0417416A3 EP0417416A3 (en) 1991-04-03

Family

ID=6842702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900112909 Withdrawn EP0417416A3 (en) 1989-09-09 1990-07-06 Axial thread rolling head

Country Status (2)

Country Link
EP (1) EP0417416A3 (fr)
DE (1) DE8910769U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29606684U1 (de) * 1996-04-12 1996-07-11 Wilhelm Fette Gmbh, 21493 Schwarzenbek Gewinderollkopf

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1065418A (fr) * 1951-10-29 1954-05-25 Appareil pour rouler les pas de vis sur tours dans l'industrie métallurgique
DE1225136B (de) * 1963-02-25 1966-09-22 Sawod Freser Gewinderollkopf fuer Einrollen von Gewinden auf duennwandigen Werkstuecken, insbesondere auf Rohren
FR2281183A1 (fr) * 1974-08-06 1976-03-05 Habegger Harold Outil a fileter par laminage
FR2336198A1 (fr) * 1975-12-23 1977-07-22 Habegger Harold Appareil a fileter par laminage
SU738734A1 (ru) * 1978-06-19 1980-06-05 Предприятие П/Я Р-6753 Резьбонакатна головка
FR2448949A1 (fr) * 1979-02-16 1980-09-12 Hydexco Tete a rouler les filets
SU940968A1 (ru) * 1980-11-14 1982-07-07 Севастопольский Приборостроительный Институт Устройство дл накатывани резьбы на метчиках
SU940967A1 (ru) * 1980-11-12 1982-07-07 Севастопольский Приборостроительный Институт Резьбонакатна головка

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1065418A (fr) * 1951-10-29 1954-05-25 Appareil pour rouler les pas de vis sur tours dans l'industrie métallurgique
DE1225136B (de) * 1963-02-25 1966-09-22 Sawod Freser Gewinderollkopf fuer Einrollen von Gewinden auf duennwandigen Werkstuecken, insbesondere auf Rohren
FR2281183A1 (fr) * 1974-08-06 1976-03-05 Habegger Harold Outil a fileter par laminage
FR2336198A1 (fr) * 1975-12-23 1977-07-22 Habegger Harold Appareil a fileter par laminage
SU738734A1 (ru) * 1978-06-19 1980-06-05 Предприятие П/Я Р-6753 Резьбонакатна головка
FR2448949A1 (fr) * 1979-02-16 1980-09-12 Hydexco Tete a rouler les filets
SU940967A1 (ru) * 1980-11-12 1982-07-07 Севастопольский Приборостроительный Институт Резьбонакатна головка
SU940968A1 (ru) * 1980-11-14 1982-07-07 Севастопольский Приборостроительный Институт Устройство дл накатывани резьбы на метчиках

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29606684U1 (de) * 1996-04-12 1996-07-11 Wilhelm Fette Gmbh, 21493 Schwarzenbek Gewinderollkopf
EP0800877A1 (fr) * 1996-04-12 1997-10-15 Wilhelm Fette GmbH Tête à rouler les filets
US5870918A (en) * 1996-04-12 1999-02-16 Schunk; Uwe Thread rolling head

Also Published As

Publication number Publication date
EP0417416A3 (en) 1991-04-03
DE8910769U1 (de) 1989-11-02

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