EP1555072B1 - Tête de roulage des filets axial - Google Patents

Tête de roulage des filets axial Download PDF

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Publication number
EP1555072B1
EP1555072B1 EP04028284A EP04028284A EP1555072B1 EP 1555072 B1 EP1555072 B1 EP 1555072B1 EP 04028284 A EP04028284 A EP 04028284A EP 04028284 A EP04028284 A EP 04028284A EP 1555072 B1 EP1555072 B1 EP 1555072B1
Authority
EP
European Patent Office
Prior art keywords
shank
bearing unit
radial
rolling head
axial thread
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.)
Active
Application number
EP04028284A
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German (de)
English (en)
Other versions
EP1555072A2 (fr
EP1555072A3 (fr
Inventor
Andreas Focken
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
Fette GmbH
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Filing date
Publication date
Application filed by Fette GmbH filed Critical Fette GmbH
Publication of EP1555072A2 publication Critical patent/EP1555072A2/fr
Publication of EP1555072A3 publication Critical patent/EP1555072A3/fr
Application granted granted Critical
Publication of EP1555072B1 publication Critical patent/EP1555072B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 invention relates to an axial thread rolling head according to the preamble of claim 1.
  • Such axial thread rolling head is made DE 44 30 184 C2 known.
  • Axialgewinderollkexcellent are about DE 12 69 086 or DE 24 38 937 C3 known. They usually provide three offset by 120 ° to each other arranged profile rollers, which are rotatably mounted in a so-called storage unit.
  • the bearing unit is held by a shaft which is clamped in a machine tool.
  • the thread rolling head is held in the direction of rotation, but can move axially.
  • the rolling head is pressed onto the rotating workpiece, wherein the feed is made by the axially freely movable rolling head during the formation of the thread. After completion of the thread forming is necessary to disengage the profile rollers with the workpiece.
  • the profile rollers store on eccentric shafts, on which also sit small gears, which mesh with a Mittenrad which is rotatably mounted on the shaft ( DE 12 69 086 A1 or DE 44 30 184 C2 ).
  • a coil spring is fixedly connected at one end to the bearing unit and at the other end fixed to the shaft. In the working position of the profile rollers, the spiral spring is biased in the winding direction. If the feed reaches a predetermined value, the workpiece abuts against an axially mounted in the shaft of the thread rolling head rod. As a result, the bearing unit and shaft are moved apart axially, and a dog clutch between these parts is separated. The spring can now rotate the bearing unit by a predetermined angle.
  • the gears roll on the center wheel and rotate the eccentric shafts for adjusting the profile rollers out of engagement with the workpiece.
  • the bearing unit is reversed in the direction of rotation opposite to the rotational movement described until the jaw clutch engages.
  • the profile rollers are designed for specific workpiece diameter and thread. If another workpiece machining is to be carried out in the same machine tool, naturally another thread rolling head must be used. This also applies to the case that the clamping portion of the shaft is adapted to the particular machine tool.
  • the shaft is in the art part of the thread rolling head and can not be easily removed if the rolling head is not dismantled.
  • the invention has for its object to provide a Axialgewindeollkopf in which can be reduced in the case of a plurality of threaded roller heads to be provided, the manufacturing cost.
  • clamping portion of the shaft on the one hand and coupling portion, bearing portion and driving portion of the shaft on the other hand separate parts which are axially and non-rotatably fixed by suitable connecting portion, but releasably connected to each other.
  • the corresponding shaft section can be readily replaced by another, wherein the part connected to the bearing unit can remain in this. If several thread rolling heads are kept in a production facility, which are used depending on the application, then the clamping section can remain in the machine tool when the storage unit is removed and replaced by another desired one. If only one thread rolling head is used in the machine tool, only a single clamping shaft is required for a large number of different rolling heads.
  • the clamping portion has an axial cylindrical collar which is fittingly inserted into a coaxial cylindrical recess of the coupling portion, wherein a rear-side radial annular surface of the coupling portion bears against a radial stop surface of the Einspannabitess.
  • the coupling portion has radially circumferentially spaced bores which lead into the cylindrical recess and receive the fastening screws.
  • the axial collar has radial threaded holes for receiving the threaded portion of the mounting screws. To separate the described parts, therefore, only the fixing screws have to be loosened, of which e.g. three are provided.
  • the radial surfaces which lie against each other are precisely worked and determine the axial length of the shaft, for which a certain amount must be maintained.
  • the holes and the fastening screws are designed so that when screwing in the fastening screws, the radial annular surface and the radial stop surface are clamped against each other.
  • the radial bores can be provided with a suitable eccentric countersink which cooperate with conical sections of the fastening screws, so that when screwing in an axial force between the separated parts is achieved.
  • the in Figs. Shaft 1 to 3 is composed of a first part 10 and a second part 12.
  • the part 10 has an elongate cylindrical clamping portion 14 which is axially drilled in a known manner. It is used for clamping in a suitable machine tool, wherein the axial through hole can receive a stop against which abuts the workpiece for moving apart of bearing unit on the one hand and shaft on the other.
  • a radial flange 16 is formed, which forms a radial stop surface 18.
  • the stop surface 18 is adjoined by an axial cylindrical collar 20 which has four radial threaded holes 22 spaced by 90 °. As seen in Fig. 3, the threaded holes 22 can receive fastening screws 24, the head of which is conical, as seen at 26.
  • the described sections of the part 10 are integrally formed.
  • the part 12 has a hollow cylindrical portion 30 which is provided with radial through holes 32.
  • the through holes 32 are arranged at 90 ° spacing and have a conical countersink 34.
  • the conical countersink 34 is eccentric.
  • the portion 30 has on the side opposite the part 10 on a coupling portion 36 which is formed here as a jaw coupling portion.
  • the dog clutch portion 36 cooperates with a complementary coupling portion of the bearing unit of the axial thread rolling head.
  • Bearing unit on the one hand and the shaft according to FIGS. 1 to 3, on the other hand, are axially movable relative to each other to engage and disengage the coupling portions.
  • the bearing unit is received by a bearing portion 38, which adjoins the coupling portion 36.
  • the bearing portion 38 is followed by a splined portion 40, which, as is also known, rotatably cooperates with a complementary through hole of a center gear, which in turn meshes with pinions on the eccentric shafts for the profile rollers of Axialgewinderollkopfs.
  • the part 12 is also one piece.
  • the collar 20 is inserted into the interior of the portion 30, wherein the inner recess 42 of the portion 30 fits snugly on the collar 20 and the axes of the holes 32 coincide with the axes of the threaded holes 22.
  • the mounting screws 24 on the Drilled holes 32 in the threaded holes 22 are eccentric, the formation of the countersinks 34 creates an axial force component between the parts 10 and 12, whereby a rear side annular surface 44 of the section 30 is clamped firmly against the abutment surface 18 of the flange 16 becomes.
  • the part 12 is normally fixedly mounted in the axial thread rolling head, not shown. If another rolling head is to be used or another clamping section, only a loosening of the mounting screws 24 is required to take apart the parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Gripping On Spindles (AREA)
  • Mechanical Operated Clutches (AREA)
  • Earth Drilling (AREA)

Claims (4)

  1. Tête de roulage de filets axial comportant une tige et une unité de palier, maintenue par la tige et comportant des rouleaux profilés, la tige comportant une partie de serrage (14) allongée, une première partie de couplage (36), une partie de palier (38) pour l'unité de palier, et une partie d'entraînement (40) pour une roue dentée centrale de l'unité de palier, et l'unité de palier comportant une deuxième partie de couplage, qui est en prise avec la première partie de couplage lorsque l'unité de palier et la tige sont dans une position de couplage par précontrainte d'un ressort et est hors de prise lorsque l'unité de palier et la tige sont déplacées dans le sens axial à l'encontre de la précontrainte du ressort pour s'écarter l'une de l'autre dans une position de séparation, moyennant quoi l'unité de palier peut effectuer une rotation relative sur la tige, caractérisée en ce que la partie de serrage (14) de la tige, d'une part, et la partie de couplage (36), la partie de palier (38) et la partie d'entraînement (40) de la tige, d'autre part, forment des pièces (10, 12) séparées qui, par l'intermédiaire de parties d'assemblage, peuvent être assemblées l'une à l'autre dans le sens axial et de manière solidaire en rotation, mais amovible.
  2. Tête de roulage de filets axial selon la revendication 1, caractérisée en ce que la partie de serrage (10, 14) comporte un collet (20) cylindrique, qui peut être introduit de manière ajustée dans un évidement (42) cylindrique coaxial de la partie de couplage (30, 36), une surface annulaire (44) radiale arrière de la partie de couplage (30, 36) étant en appui conte une surface de butée (18) radiale de la partie de serrage, la partie de couplage (30, 36) comportant des forures (32) radiales, écartées les unes des autres dans le sens périphérique et destinées à recevoir des vis de fixation (24), et le collet (20) axial comportant des trous taraudés (22) destinés à recevoir la tige filetée des vis de fixation (24).
  3. Tête de roulage de filets axial selon la revendication 2, caractérisée en ce que les forures (32) radiales et les vis de fixation (24) sont conçues de telle sorte que, au moment du vissage des vis de fixation (24), la surface annulaire (44) radiale et la surface de butée (18) radiale sont serrées l'une contre l'autre.
  4. Tête de roulage de filets axial selon la revendication 3, caractérisée en ce que les forures (32) radiales comportent un chanfrein (34) conique excentré.
EP04028284A 2004-01-14 2004-11-30 Tête de roulage des filets axial Active EP1555072B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004000424U 2004-01-14
DE202004000424U DE202004000424U1 (de) 2004-01-14 2004-01-14 Axialgewinderollkopf

Publications (3)

Publication Number Publication Date
EP1555072A2 EP1555072A2 (fr) 2005-07-20
EP1555072A3 EP1555072A3 (fr) 2005-11-09
EP1555072B1 true EP1555072B1 (fr) 2007-07-04

Family

ID=32087749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04028284A Active EP1555072B1 (fr) 2004-01-14 2004-11-30 Tête de roulage des filets axial

Country Status (5)

Country Link
US (1) US7204115B2 (fr)
EP (1) EP1555072B1 (fr)
AT (1) ATE366156T1 (fr)
DE (2) DE202004000424U1 (fr)
ES (1) ES2286552T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2886224A1 (fr) 2013-12-17 2015-06-24 LMT Fette Werkzeugtechnik GmbH & Co. KG Tête à rouler les filets

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112247035A (zh) * 2020-10-14 2021-01-22 如皋市中正机械有限公司 一种管桩螺栓滚丝用丝滚安装结构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE439280A (fr) * 1939-09-21 1940-10-31
US2704950A (en) * 1951-06-14 1955-03-29 Reed Rolled Thread Die Co Thread rolling device
DE1269086B (de) 1960-12-01 1968-05-30 Wilhelm Fette Praez Swerkzeug Selbsttaetig oeffnender Gewindewalzkopf
CH580462A5 (fr) * 1974-08-06 1976-10-15 Habegger Harold
DE2438937C3 (de) 1974-08-14 1986-07-31 Harold Court Bern Habegger Selbstöffnender Gewinderollkopf
ES214356Y (es) * 1975-07-31 1976-12-01 Esteban Torralba Construccion perfeccionada aplicada a cojinetes de roscar por laminacion.
DE9313282U1 (de) * 1993-09-03 1993-12-09 Wilhelm Fette Gmbh, 21493 Schwarzenbek Axialgewinderollkopf
DE29606684U1 (de) * 1996-04-12 1996-07-11 Wilhelm Fette Gmbh, 21493 Schwarzenbek Gewinderollkopf
DE20102471U1 (de) * 2001-02-13 2001-04-26 Wilhelm Fette Gmbh, 21493 Schwarzenbek Gewinderollkopf

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2886224A1 (fr) 2013-12-17 2015-06-24 LMT Fette Werkzeugtechnik GmbH & Co. KG Tête à rouler les filets
WO2015091111A1 (fr) * 2013-12-17 2015-06-25 Lmt Fette Werkzeugtechnik Gmbh & Co. Kg Tête à rouler les filets

Also Published As

Publication number Publication date
US20050150267A1 (en) 2005-07-14
DE502004004230D1 (de) 2007-08-16
EP1555072A2 (fr) 2005-07-20
ES2286552T3 (es) 2007-12-01
DE202004000424U1 (de) 2004-04-01
US7204115B2 (en) 2007-04-17
EP1555072A3 (fr) 2005-11-09
ATE366156T1 (de) 2007-07-15

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