EP0552713A1 - Tool for rolling threads - Google Patents

Tool for rolling threads Download PDF

Info

Publication number
EP0552713A1
EP0552713A1 EP93100724A EP93100724A EP0552713A1 EP 0552713 A1 EP0552713 A1 EP 0552713A1 EP 93100724 A EP93100724 A EP 93100724A EP 93100724 A EP93100724 A EP 93100724A EP 0552713 A1 EP0552713 A1 EP 0552713A1
Authority
EP
European Patent Office
Prior art keywords
profile
roller
thread
base body
rollers
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.)
Granted
Application number
EP93100724A
Other languages
German (de)
French (fr)
Other versions
EP0552713B1 (en
Inventor
Helmut Dipl.-Ing. Glimpel
Dietmar Maier
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.)
Emuge Werk Richard Glimpel GmbH and Co KG Fabrik fuer Praezisionswerkzeuge
Original Assignee
Emuge Werk Richard Glimpel GmbH and Co KG Fabrik fuer Praezisionswerkzeuge
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 Emuge Werk Richard Glimpel GmbH and Co KG Fabrik fuer Praezisionswerkzeuge filed Critical Emuge Werk Richard Glimpel GmbH and Co KG Fabrik fuer Praezisionswerkzeuge
Publication of EP0552713A1 publication Critical patent/EP0552713A1/en
Application granted granted Critical
Publication of EP0552713B1 publication Critical patent/EP0552713B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • B21H3/08—Making helical bodies or bodies having parts of helical shape internal screw-threads

Definitions

  • the invention relates to a roller for pressing threads, in which a base body is provided with a device for receiving in a tool holder and carries at least three profile rollers on an end face for threading, which are arranged on a circle at a distance from one another, in which the profile rollers each are rotatable on a shaft journal which is fixed to the base body and is laterally inclined to its central axis by the pitch angle of the thread to be pressed and in which the profile rollers on the base body are each placed against an axially positioning stop and with the free ends corresponding to the slope of the one to be pressed Thread are offset in the axial direction.
  • rollers for pressing external threads are known per se (DE-OS 26 33 883).
  • the stops viewed axially, are all arranged at the same height and the offset of the free ends of the profile rollers is achieved by the profile rollers being of different lengths.
  • the offset is necessary because, due to the pitch of the thread to be produced, the profile of each profile roller on the rod piece which is to be provided with the external thread must engage axially at another point. So many different profile rolls have to be manufactured and kept in stock as are provided on the cast iron. This effort due to the offset of the free end of the profile rollers is relatively large.
  • An object of the invention is therefore to provide a roller iron of the type mentioned, in which the axial offset of the free ends of the profile rollers is achieved by the same design of all profile roles in a less expensive manner.
  • the roller iron according to the invention is solving this problem, characterized in that the positioning stops are offset in the axial direction in accordance with the pitch of the thread to be pressed, all profile rollers being of the same design.
  • the profile rollers are the same in terms of axial extension and in terms of profile, i.e. are identical, the production and storage of the profile rollers are less expensive.
  • the required axial offset of the base body stops only requires a relatively small, negligible additional effort in the manufacture of the base body.
  • the profile rolls of a cast iron according to the invention are identical to one another, they can be exchanged for one another as desired. An essential prerequisite has been created in order to develop the roller iron into an inexpensive single-use tool.
  • the profile rollers have circumferential rings and channels or profile ribs and profile gaps as a pressing profile.
  • the inclined arrangement of the profile rollers is provided because of the pitch of the thread to be pressed or generated.
  • the base body has, for example, the outside dimension of a die and can be inserted into the same tool holder as a die.
  • the shaft journals and profile rollers are cantilevered at one end, that is to say are not held by an additional cross piece. This simplifies production, with the aim being a disposable tool, where it is not necessary to change the profile rollers.
  • the shaft journal is of some kind, ie a head, which holds the profile roller on the shaft journal; if this holding head is formed by a snap ring, the profile roller can be replaced.
  • shaft journals are pushed into the base body only by clamping and / or are designed to be eccentric-free. This is easy to manufacture. There is no adjustability of the diameter of the thread to be pressed because of the freedom from eccentrics and the tight fit. However, this is meaningless if an inexpensive one-way tool is sought.
  • the diameter of the external thread to be pressed is larger than the diameter of the profile rollers, in particular greater than one and a half times the profile roller diameter. These diameter ratios are primarily useful for more than three profile rolls, it is about pressing external threads with relatively large diameters with relatively small profile rollers.
  • a particularly expedient and advantageous embodiment of the invention exists when a head holding the profile roller is provided at the free end of the shaft journal and the head is integral with the shaft journal.
  • This one-piece design is advantageous because of its cheapness in the case of a single tool because the manufacture of the headed shaft journal and the assembly of the roller iron are simplified.
  • a head holding the profile roller is provided at the free end of the shaft journal and the head is arranged sunk in a hollow of the profile roller.
  • this allows the profile rollers with the pressing profile to be brought closer to an end collar on the rod piece being processed than is possible with an axially projecting head; i.e. the pressed thread can reach closer to the end collar. If the head is in one piece with the shaft journal, it does not need to be assembled, which is particularly difficult when the head is recessed.
  • the base body 1 to 4 serves to press an external thread and has a base body 1 which is circular in cross section and is plate-shaped.
  • the base body 1 is provided on the outer circumference with a device 2 for receiving in a tool holder, which is provided on the lateral surface in the form of countersinks and an axial groove.
  • the circumferential surface merges into an end face 3 via a circumferential rim.
  • the base body 1 has a circular opening 4 in the middle, the diameter of which is at least somewhat larger than the outside diameter of the thread to be produced and which serves to receive the rod section which has already been threaded in the machining process.
  • the base body is provided with axially continuous mounting holes 5, which are arranged on a circle.
  • stops 6, 7, 8 are formed around the mounting holes 5 by the base body 1, which stops are recessed or sunk into the base body 1 at different depths.
  • the countersink depth is directed counterclockwise.
  • the flat stops 6, 7, 8 are each arranged obliquely with respect to a horizontal, for example the end face 3, so that a perpendicular to the bevel has a lateral inclination with respect to the central axis of the base body. This angle of inclination corresponds approximately to the thread lead angle.
  • the central axis of the mounting holes 5 is inclined to the central axis of the base body 1, the mounting holes extending at right angles to the oblique flat stops 6, 7, 8.
  • Each profile roller 9 lies with a lower end face on one of the stops 6, 7, 8 and projects with the profile at least by the depth of the thread to be pressed in the central opening 4 of the base body 1.
  • the center axes of the profile rollers 9 are to the center axis of the base body 1 according to the slope of the stops 6, 7, 8 inclined in the same way as the central axes of the mounting holes 5.
  • the side inclination of the profile rollers 9 is a tangential inclination.
  • the free ends 10 of the profile roller 9 are in the axial direction go offset against each other. This offset is illustrated by Fig. 4.
  • Each profile roller 9 is held on the base body by means of a shaft journal 11, one end piece of which is clamped in a mounting hole 5.
  • the profile roller 9 is rotatably seated with a central bearing bore on the shaft journal 11, which at the upper end integrally carries a head 12 which projects radially on all sides.
  • the head is completely received by a cavity 13, which is provided centrally on an end face of the profile roller 9 and is open on one side in the direction of the central axis of the profile roller.
  • the head 12 is in the cavity 13 of the profile roller 9 rotatably fitted.
  • FIG. 5 is intended for pressing the external thread and has more than three, namely six profile rollers 9, the diameter of which is considerably smaller than the external diameter of the external thread to be pressed.
  • the offset illustrated by FIG. 4 can also be an integral multiple of the profile division.
  • a multi-start thread can be produced with the roller.
  • two or more threads run parallel to each other and the spacing of the tips of two adjacent threads is to be understood by profile division.
  • 6 to 8 is provided for pressing the internal thread and is constructed in the manner of the same as the roller according to FIGS. 1 to 4, which is why reference is made to the relevant description.
  • 6 to 8 is the lateral inclination, ie the tangential inclination of the profile roller 9 not shown.
  • the profile rollers 9 project radially beyond the base body 1 with respect to its central axis.
  • Fig. 7 shows a tool holder 14 which receives the base body 1 by means of screws 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

There is a tool in which a main body 1 bears, for the purpose of thread rolling, profiled rollers 9 which, on the main body 1, are each laid against an axially positioning stop 6, 7, 8 and, with the free ends 10, are offset in the axial direction in accordance with the pitch of the thread to be rolled. It is desirable if the axial offset of the free ends of the profiled rollers be achieved in a less expensive manner by identical design of all the profiled rollers. This provides an essential prerequisite for the development of the rolling tool into a disposable tool. <IMAGE>

Description

Die Erfindung betrifft ein Rolleisen zum Drücken von Gewinde, bei dem ein Grundkörper mit einer Einrichtung zur Aufnahme in einen Werkzeughalter versehen ist und an einer Stirnfläche zum Gewindedrücken mindestens drei Profilrollen trägt, die auf einem Kreis mit Abstand voneinander angeordnet sind, bei dem die Profilrollen jeweils auf einem Wellenzapfen drehbar sind, der am Grundkörper festgelegt ist und zu dessen Mittelachse um den Steigungswinkel des zu drükkenden Gewindes seitlich geneigt ist und bei dem die Profilrollen beim Grundkörper jeweils gegen einen axial positionierenden Anschlag gelegt und mit den freien Enden entsprechend der Steigung des zu drückenden Gewindes in Achsrichtung versetzt sind.The invention relates to a roller for pressing threads, in which a base body is provided with a device for receiving in a tool holder and carries at least three profile rollers on an end face for threading, which are arranged on a circle at a distance from one another, in which the profile rollers each are rotatable on a shaft journal which is fixed to the base body and is laterally inclined to its central axis by the pitch angle of the thread to be pressed and in which the profile rollers on the base body are each placed against an axially positioning stop and with the free ends corresponding to the slope of the one to be pressed Thread are offset in the axial direction.

Rolleisen zum Drücken von Außengewinde sind an sich bekannt (DE-OS 26 33 883). Bei einem durch die Praxis bekannten Rolleisen der eingangs genannten Art sind die Anschläge, axial gesehen, sämtliche auf gleicher Höhe angeordnet und ist der Versatz der freien Enden der Profilrollen erreicht, indem die Profilrollen verschieden lang ausgebildet sind. Der Versatz ist nötig, weil wegen der Steigung des zu erzeugenden Gewindes das Profil jeder Profilrolle an dem Stangenstück, das mit dem Außengewinde zu versehen ist, axial an einer anderen Stelle angreifen muß. Es müssen also soviele verschiedene Profilrollen hergestellt und auf Lager gehalten werden, wie an dem Rolleisen vorgesehen sind. Dieser durch den Versatz des freien Ende der Profilrollen bedingte Aufwand ist relativ groß.Rollers for pressing external threads are known per se (DE-OS 26 33 883). In a roller iron of the type mentioned at the outset known in practice, the stops, viewed axially, are all arranged at the same height and the offset of the free ends of the profile rollers is achieved by the profile rollers being of different lengths. The offset is necessary because, due to the pitch of the thread to be produced, the profile of each profile roller on the rod piece which is to be provided with the external thread must engage axially at another point. So many different profile rolls have to be manufactured and kept in stock as are provided on the cast iron. This effort due to the offset of the free end of the profile rollers is relatively large.

Eine Aufgabe der Erfindung ist es daher, ein Rolleisen der eingangs genannten Art zu schaffen, bei dem der axiale Versatz der freien Enden der Profilrollen durch gleiche Ausbildung sämtlicher Profilrollen in einer weniger aufwendigen Weise erreicht ist. Das erfindungsgemäße Rolleisen ist, diese Aufgabe lösend, dadurch gekennzeichnet, daß die positionierenden Anschläge entsprechend der Steigung des zu drückenden Gewindes in Achsrichtung versetzt sind, wobei sämtliche Profilrollen gleich ausgebildet sind.An object of the invention is therefore to provide a roller iron of the type mentioned, in which the axial offset of the free ends of the profile rollers is achieved by the same design of all profile roles in a less expensive manner. The roller iron according to the invention is solving this problem, characterized in that the positioning stops are offset in the axial direction in accordance with the pitch of the thread to be pressed, all profile rollers being of the same design.

Da die Profilrollen hinsichtlich der axialen Erstreckung und hinsichtlich des Profils gleich, d.h. identisch ausgebildet sind, sind die Herstellung und Lagerhaltung der Profilrollen weniger aufwendig. Der erforderliche axiale Versatz der Grundkörper-Anschläge macht nur einen relativ geringen, vernachlässigbaren zusätzlichen Aufwand bei der Herstellung des Grundkörpers nötig. Da die Profilrollen eines erfindungsgemäßen Rolleisens einander gleich sind, können sie gegeneinander beliebig getauscht werden. Es ist eine wesentlich Voraussetzung geschaffen, um das Rolleisen hin zu einem preisgünstigen Einwegwerkzeug zu entwickeln.Since the profile rollers are the same in terms of axial extension and in terms of profile, i.e. are identical, the production and storage of the profile rollers are less expensive. The required axial offset of the base body stops only requires a relatively small, negligible additional effort in the manufacture of the base body. Since the profile rolls of a cast iron according to the invention are identical to one another, they can be exchanged for one another as desired. An essential prerequisite has been created in order to develop the roller iron into an inexpensive single-use tool.

Die Profilrollen weisen als drückendes Profil umlaufende Ringe und Rinnen bzw. Profilrippen und Profillücken auf. Die geneigte Anordnung der Profilrollen ist wegen der Steigung der zu drückenden bzw. zu erzeugenden Gewindes vorgesehen. Der Grundkörper hat z.B. die Außenabmessung eines Schneideisens und läßt sich in die gleiche Werkzeugaufnahme einsetzen wie ein Schneideisen. Bei dem hier zur Rede stehenden Rolleisen sind die Wellenzapfen und Profilrollen einerends freiragend, d.h. nicht durch ein zusätzliches Querstück gehalten. Dies vereinfacht die Herstellung, wobei ein Einwegwerkzeug angestrebt ist, bei dem ein Auswechseln der Profilrollen unnötig ist. Der Wellenzapfen wieist am freien Ende eine irgendwie geartete Verbreitung, d.h. einen Kopf auf, der die Profilrolle auf dem Wellenzapfen hält; wenn dieser haltende Kopf von einem Sprengring gebildet ist, dann ist die Profilrolle auswechselbar.The profile rollers have circumferential rings and channels or profile ribs and profile gaps as a pressing profile. The inclined arrangement of the profile rollers is provided because of the pitch of the thread to be pressed or generated. The base body has, for example, the outside dimension of a die and can be inserted into the same tool holder as a die. In the roller iron in question here, the shaft journals and profile rollers are cantilevered at one end, that is to say are not held by an additional cross piece. This simplifies production, with the aim being a disposable tool, where it is not necessary to change the profile rollers. At the free end, the shaft journal is of some kind, ie a head, which holds the profile roller on the shaft journal; if this holding head is formed by a snap ring, the profile roller can be replaced.

Besonders zweckmäßig und vorteilhaft ist es, wenn die Wellenzapfen im Grundkörper eingeschoben nur durch Klemmung festsitzen und/oder exzenterfrei gerade ausgebildet sind. Dies ist herstellungsmäßig einfach. Es ist zwar wegen der Exzenterfreiheit und des festen Sitzes keine Einstellbarkeit des Durchmessers des zu drückenden Gewindes gegeben. Dies ist aber bedeutungslos, wenn ein preiswertes Einwegwerkzeug angestrebt ist.It is particularly expedient and advantageous if the shaft journals are pushed into the base body only by clamping and / or are designed to be eccentric-free. This is easy to manufacture. There is no adjustability of the diameter of the thread to be pressed because of the freedom from eccentrics and the tight fit. However, this is meaningless if an inexpensive one-way tool is sought.

Besonders zweckmäßig und vorteilhaft ist es sodann, wenn mindestens vier, vorzugsweise mindestens sechs Profilrollen am Grundkörper vorgesehen sind. Es sind jetzt Rolleisen mit mehr als drei Profilrollen bei vernünftigem Aufwand möglich. Dadurch lassen sich nun zu drückende Außengewinde mit weit größeren Durchmessern als bisher mittels Rolleisen dieser Bauart herstellen. Außengewinde mit derart großen Durchmessern sind bisher nicht mit Rolleisen gedrückt worden. Dabei kann der Durchmesser der Profilrollen relativ klein gehalten werden.It is then particularly expedient and advantageous if at least four, preferably at least six, profile rollers are provided on the base body. Rollers with more than three profile rolls are now possible with reasonable effort. As a result, external threads to be pressed can now be produced with diameters of this type that are much larger than previously. External threads with such large diameters have so far not been pressed with roller dies. The diameter of the profile rollers can be kept relatively small.

Besonders zweckmäßig und vorteilhaft ist es ebenso, wenn der Durchmesser des zu drückenden Außengewindes größer als der Durchmesser der Profilrollen ist, insbesondere größer als der eineinhalbfache Profilrollen-Durchmesser ist. Diese Durchmesserverhältnisse sind primär bei mehr als drei Profilrollen sinnvoll, wobei es darum geht, mit relativ kleinen Profilrollen Außengewinde mit relativ großen Durchmessern zu drücken.It is also particularly expedient and advantageous if the diameter of the external thread to be pressed is larger than the diameter of the profile rollers, in particular greater than one and a half times the profile roller diameter. These diameter ratios are primarily useful for more than three profile rolls, it is about pressing external threads with relatively large diameters with relatively small profile rollers.

Eine besonders zweckmäßige und vorteilhafte Ausführungsform der Erfindung liegt vor, wenn am freien Ende des Wellenzapfens ein die Profilrolle haltender Kopf vorgesehen ist und der Kopf mit dem Wellenzapfen einstückig ist. Diese Einstückigkeit ist ihrer Billigkeit wegen bei einem Einwerkzeug von Vorteil, weil die Herstellung des mit Kopf versehenen Wellenzapfens und der Zusammenbau des Rolleisens vereinfacht sind.A particularly expedient and advantageous embodiment of the invention exists when a head holding the profile roller is provided at the free end of the shaft journal and the head is integral with the shaft journal. This one-piece design is advantageous because of its cheapness in the case of a single tool because the manufacture of the headed shaft journal and the assembly of the roller iron are simplified.

Besonders zweckmäßig und vorteilhaft ist es sodann, wenn am freien Ende des Wellenzapfens ein die Profilrolle haltender Kopf vorgesehen ist und der kopf in einer Höhlung der Profilrolle versenkt angeordnet ist. Dies läßt es ganz allgemein zu, die Profilrollen mit dem drückenden Profil näher an einen Endbund an dem in Bearbeitung befindlichen Stangenstück heranzuführen, als es bei axial vorstehenden kopf möglich ist; d.h. das gedrückte Gewinde kann näher an den Endbund heranreichen. Wenn der Kopf mit dem Wellenzapfen einstückig ist braucht er nicht montiert zu werden, was bei versenkter Anordnung das Kopfes besonders schwierig ist.It is then particularly expedient and advantageous if a head holding the profile roller is provided at the free end of the shaft journal and the head is arranged sunk in a hollow of the profile roller. In general, this allows the profile rollers with the pressing profile to be brought closer to an end collar on the rod piece being processed than is possible with an axially projecting head; i.e. the pressed thread can reach closer to the end collar. If the head is in one piece with the shaft journal, it does not need to be assembled, which is particularly difficult when the head is recessed.

In der Zeichnung sind bevorzugte Ausführungsformen der Erfindung dargestellt und zeigt

Fig. 1
eine Draufsicht auf ein erstes Rolleisen zum Drücken von Gewinde,
Fig. 2
eine Ansicht des Rolleisens gemäß Pfeil II in Fig. 1,
Fig. 3
eine Ansicht des Rolleisens gemäß Pfeil III in Fig. 1,
Fig. 4
einen schematische Abwicklung des Rolleisens gemäß 1 in einem größeren Maßstab als in Fig. 1,
Fig. 5
eine Draufsicht auf ein zweites Rolleisen zum Drücken von Gewinde,
Fig. 6
eine Draufsicht auf ein drittes Rolleisen zum Drücken von Gewinde,
Fig. 7
einen Schnitt gemäß Linie VII-VII in Fig. 6 und
Fig. 8
eine Unteransicht des Rolleisens gemäß Fig.6.
In the drawing, preferred embodiments of the invention are shown and shows
Fig. 1
a plan view of a first roller for pressing threads,
Fig. 2
2 shows a view of the roller iron according to arrow II in FIG. 1,
Fig. 3
a view of the cast iron according to arrow III in Fig. 1,
Fig. 4
2 shows a schematic development of the roller iron according to FIG. 1 on a larger scale than in FIG. 1,
Fig. 5
a plan view of a second roller for pressing threads,
Fig. 6
a plan view of a third roller for pressing threads,
Fig. 7
a section along line VII-VII in Fig. 6 and
Fig. 8
a bottom view of the cast iron according to Figure 6.

Das Rolleisen gemäß Fig. 1 bis 4 dient dem Drücken eines Außengewindes und weist einen Grundkörper 1 auf, der im Querschnitt kreisrund ist und plattenförmig ist. Der Grundkörper 1 ist am Außenumfang mit einer Einrichtung 2 zur Aufnahme in einem Werkzeughalter versehen, die an der Mantelfläche in Form von Ansenkungen und einer axialen Nut vorgesehen ist. Die Mantelfläche geht über eine umlaufende Amfassung in die eine Stirnfläche 3 über. Der Grundkörper 1 weist mittig einen kreisrunden Durchbruch 4 auf, dessen Durchmesser mindestens etwas größer als der Außendurchmesser des zu fertigenden Gewindes ist und der zur Aufnahme des im Bearbeitungsprozeß bereits mit Gewinde versehenen Stangenabschnittes dient. Weiterhin ist der Grundkörper mit axial durchgehenden Halterungsbohrungen 5 versehen, die auf einam Kreis angeordnet sind.1 to 4 serves to press an external thread and has a base body 1 which is circular in cross section and is plate-shaped. The base body 1 is provided on the outer circumference with a device 2 for receiving in a tool holder, which is provided on the lateral surface in the form of countersinks and an axial groove. The circumferential surface merges into an end face 3 via a circumferential rim. The base body 1 has a circular opening 4 in the middle, the diameter of which is at least somewhat larger than the outside diameter of the thread to be produced and which serves to receive the rod section which has already been threaded in the machining process. Furthermore, the base body is provided with axially continuous mounting holes 5, which are arranged on a circle.

An der einen Stirnfläche 3 sind rund um die Halterungensbohrungen 5 vom Grundkörper 1 flächige Anschlage 6, 7, 8 gebildet, die verschieden tief in den Grundkörper 1 eingelassen bzw. versenkt sind. Es sind drei Anschläge 6, 7, 8 vorgesehen, vom denen der eine nur wenig versenkt ist, der, bei Draufsicht bei zu fertigendem rechtsinnigem Gewinde im Uhrzeigersinn betrachtet, nachfolgende um ein Drittel der Gewindesteigung tiefer versenkt ist und der nachfolgende Dritte um zwei Drittel der Gewindesteigung noch tiefer versenkt ist. Bei Festigung von linkssinnigen Gewinden ist die Versenkungstiefe entgegen dem Uhrzeigersinn gerichtet. Die flächigen Anschläge 6, 7, 8 sind jeweils bezüglich einer Waagerechten, z.B. der Stirnfläche 3, schräg angeordnet, so daß eine Rechtwinkelige zu der Schräge gegenüber der Mittelachse des Grundkörpers eine seitliche Neigung aufweist. Dieser Neigungswinkel entspricht im etwa dem Gewindesteigungswinkel. Im gleicher Weise ist die Mittelachse der Halterungsbohrungen 5 zu der Mittelachse des Grundkörpers 1 geneigt, wobei die Halterungsbohrungen rechtwinkelig zu dem schrägen flächigen Anschlägen 6, 7, 8 verlaufen.On one end face 3, flat stops 6, 7, 8 are formed around the mounting holes 5 by the base body 1, which stops are recessed or sunk into the base body 1 at different depths. There are three stops 6, 7, 8, one of which one is sunk only a little, which, when viewed from the top when the right-hand thread is to be produced, looks clockwise, the following is sunk lower by a third of the thread pitch and the following third is sunk even further by two thirds of the thread pitch. When tightening left-handed threads, the countersink depth is directed counterclockwise. The flat stops 6, 7, 8 are each arranged obliquely with respect to a horizontal, for example the end face 3, so that a perpendicular to the bevel has a lateral inclination with respect to the central axis of the base body. This angle of inclination corresponds approximately to the thread lead angle. In the same way, the central axis of the mounting holes 5 is inclined to the central axis of the base body 1, the mounting holes extending at right angles to the oblique flat stops 6, 7, 8.

Es sind drei gleiche Profilrollen 9 vorgesehen, die in ihrer Achsrichtung gleichlang sind und ein gleiches Profil vom in sich geschlossen umlaufenden Profilrippen und Profillücken aufweisen. Jede Profilrolle 9 liegt mit einer unteren Stirnfläche am einem der Anschläge 6, 7, 8 und ragt mit dem Profil mindestans um die Tiefe des zu drückenden Gewindes im dem mittigen Durchbruch 4 des Grundkörpers 1. Die Mittelachsen der Profilrollen 9 sind zur Mittelachse des Grundkörpers 1 entsprechend der Schräge der Anschläge 6, 7, 8 im gleicher Weise geneigt wie die Mittelachsen der Halterungsbohrungen 5. Bei der Seitenneigung der Profilrollen 9 handelt es sich um eine tangentiale Neigung. Ensprechend der verschieden großen Versenkung der Anschläge 6, 7, 8 sind die freien Enden 10 der Profilrolle 9 in Achsrichtung gehen gegeneinander versetzt. Dieser Versatz wird durch Fig 4 verdeutlicht.There are three identical profile rollers 9 which are of equal length in their axial direction and have the same profile of the self-contained circumferential profile ribs and profile gaps. Each profile roller 9 lies with a lower end face on one of the stops 6, 7, 8 and projects with the profile at least by the depth of the thread to be pressed in the central opening 4 of the base body 1. The center axes of the profile rollers 9 are to the center axis of the base body 1 according to the slope of the stops 6, 7, 8 inclined in the same way as the central axes of the mounting holes 5. The side inclination of the profile rollers 9 is a tangential inclination. Corresponding to the different sized countersinking of the stops 6, 7, 8, the free ends 10 of the profile roller 9 are in the axial direction go offset against each other. This offset is illustrated by Fig. 4.

Jede Profilrolle 9 ist am Grundkörper mittels eines Wellenzapfens 11 gehalten, dessen eines Endstück in einer Halterungsbohrung 5 klemmend festsitzt. Die Profilrolle 9 sitzt mit einer mittigen Lagerungsbohrung drehbar auf dem Wellenzapfen 11, der am oberen Ende einstückig einem Kopf 12 trägt, der radial allseits vorspringt. Der Kopf ist vollständig von einer Höhlung 13 aufgenommen, die an einer Stirnseite der Profilrolle 9 mittig vorgesehen ist und in der Richtung der Mittelachse der Profilrolle einseitig offen ist. Der Kopf 12 ist im die Höhlung 13 der Profilrolle 9 drehlagernd genau eingepaßt.Each profile roller 9 is held on the base body by means of a shaft journal 11, one end piece of which is clamped in a mounting hole 5. The profile roller 9 is rotatably seated with a central bearing bore on the shaft journal 11, which at the upper end integrally carries a head 12 which projects radially on all sides. The head is completely received by a cavity 13, which is provided centrally on an end face of the profile roller 9 and is open on one side in the direction of the central axis of the profile roller. The head 12 is in the cavity 13 of the profile roller 9 rotatably fitted.

Das Rolleisem gemäß Fig. 5 ist zum Drücken vom Außengewinde vorgesehen und weist mehr als drei, nämlich sechs Profilrollen 9 auf, deren Durchmesser beachtlich kleiner als der Außendurchmesser des zu drückenden Außengewindes ist. Der durch Fig. 4 verdeutlichte Versatz kann auch ein ganzzahliges Vielfaches der Profilteilung sein. In diesem Fall läßt sich ein mehrgängiges Gewinde mit dem Rolleisem herstellen Bei einem mehrgängigan Gewinde verlaufen zwei oder mehr Gewindegänge parallel zueinander und ist unter Profilteilung der Abstand der Spitzen zweier benachbarter Gewindegänge voneinander zu verstehen.5 is intended for pressing the external thread and has more than three, namely six profile rollers 9, the diameter of which is considerably smaller than the external diameter of the external thread to be pressed. The offset illustrated by FIG. 4 can also be an integral multiple of the profile division. In this case, a multi-start thread can be produced with the roller. In the case of a multi-start thread, two or more threads run parallel to each other and the spacing of the tips of two adjacent threads is to be understood by profile division.

Das Rolleisen gemäß Fig. 6 bis 8 ist zum Drücken vom Innengewinde da vorgesehen umd im wessenlichen so aufgebaut wie das Rolleisen gemäß Fig. 1 bis 4, weshalb auf die diesbezügliche Beschreibung verwiesen wird. In Fig. 6 bis 8 ist die seitliche Neigung, d.h. die tangentiale Neigung der Profilrolle 9 nicht gezeigt. Die Profilrollen 9 ragen über den Grundkörper 1 bezüglich dessen Mittelachse radial hinaus. Fig. 7 zeigt einen Werkzeughalter 14, der dem Grundkörper 1 mittels Schrauben 15 aufnimmt.6 to 8 is provided for pressing the internal thread and is constructed in the manner of the same as the roller according to FIGS. 1 to 4, which is why reference is made to the relevant description. 6 to 8 is the lateral inclination, ie the tangential inclination of the profile roller 9 not shown. The profile rollers 9 project radially beyond the base body 1 with respect to its central axis. Fig. 7 shows a tool holder 14 which receives the base body 1 by means of screws 15.

Claims (6)

Rolleisem zum Drücken vom Gewinde,
bei dem ein Grundkörper mit einer Einrichtung zur Aufnahme in einen Werkzeughalter versehen ist und an einer Stirnfläche zum Gewindedrücken mindestens drei Profilrollen trägt, die auf einem Kreis mit Abstand voneinander angeordnet sind,
bei der die Profilrollen jeweils auf einem Wellenzapfen drehbar sind der am Grundkörper festgelegt ist und zu dessen Mittelachse um den Steigungswinkel des zu drückenden Gewindes seitlich geneigt ist, und
bei der die Profilrollen beim Grundkörper jeweils gegen einem axial positionierenden Anschlag gelegt und mit den freiem Enden entsprechend der Steigung des zu drückenden Gewindes in Achsrichtung versetzt sind,
dadurch gekennzeichnet,
daß die positionierenden Anschläge (6, 7, 8) entsprechend der Steigung des zu drückenden Gewindes in Achsrichtung versetzt sind, wobei sämtliche Profilrollen (9) gleich ausgebildet sind.Roller for pressing the thread,
in which a base body is provided with a device for receiving in a tool holder and carries at least three profile rollers on an end face for threading, which are arranged on a circle at a distance from one another,
in which the profile rollers are each rotatable on a shaft journal which is fixed to the base body and is laterally inclined to the central axis thereof by the pitch angle of the thread to be pressed, and
in which the profile rollers in the base body are each placed against an axially positioning stop and the free ends are offset in the axial direction in accordance with the pitch of the thread to be pressed,
characterized by
that the positioning stops (6, 7, 8) are offset in accordance with the pitch of the thread to be pressed in the axial direction, with all profile rollers (9) being of the same design. Rolleisem nach Anspruch 1, dadurch gekennzeichnet, daß die Wellenzapfen (11) im Grundkörper (1) eingeschoben nur durch Klemmung festsitzen und/oder oder exzenterfrei ausgebildet sind.Rolleisem according to claim 1, characterized in that the shaft journals (11) inserted in the base body (1) are stuck only by clamping and / or are eccentric. Rolleisen nach Anspruch 1 oder 2,dadurch gekennzeichnet, daß mindestens vier, vorzugsweise mindestens sechs Profilrollen (9) am Grundkörper (1) vorgesehen sind.Roller according to claim 1 or 2, characterized in that at least four, preferably at least six profile rollers (9) are provided on the base body (1). Rolleisem nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß der Durchmesser des zu drückenden Außengewindes größer als der Durchmesser der Profilrolle (9) ist, insbesondere größer als der eineinhalbfache Profilrollen-Durchmesser ist.Roller according to claim 1, 2 or 3, characterized in that the diameter of the external thread to be pressed is larger than the diameter the profile roller (9) is, in particular larger than one and a half times the profile roller diameter. Rolleisen nach einem der vorhergehenden Ansprüche, wobei am freiem Ende jedes Wellenzapfens ein die Profilrolle haltender Kopf vorgesehen ist, dadurch gekennzeichnet, daß der Kopf (12) mit dem Wellenzapfen (11) einstückig ist.Roller according to one of the preceding claims, wherein a head holding the profile roller is provided at the free end of each shaft journal, characterized in that the head (12) is integral with the shaft journal (11). Rolleisen nach einem dar vorhergehenden Ansprüche, wobei am freien Ende des Wellenzapfes ein die Profilrolle haltender Kopf vorgesehen ist, dadurch gekennzeichnet, daß der Kopf (12) in einer Höhlung (13) der Profilrolle (9) versenkt angeordnet ist.Roller according to one of the preceding claims, wherein a head holding the profile roller is provided at the free end of the shaft journal, characterized in that the head (12) is arranged sunk in a cavity (13) in the profile roller (9).
EP93100724A 1992-01-21 1993-01-19 Tool for rolling threads Expired - Lifetime EP0552713B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4201446A DE4201446A1 (en) 1992-01-21 1992-01-21 ROLLER BAR TO PRESS THREAD
DE4201446 1992-01-21

Publications (2)

Publication Number Publication Date
EP0552713A1 true EP0552713A1 (en) 1993-07-28
EP0552713B1 EP0552713B1 (en) 1996-06-05

Family

ID=6449907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100724A Expired - Lifetime EP0552713B1 (en) 1992-01-21 1993-01-19 Tool for rolling threads

Country Status (2)

Country Link
EP (1) EP0552713B1 (en)
DE (2) DE4201446A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103691856A (en) * 2013-07-29 2014-04-02 曹立峰 Method for controlling forward speed of handpiece by automatic rib-stripping thread roller
EP2792429A1 (en) 2013-04-19 2014-10-22 LMT Fette Werkzeugtechnik GmbH & Co. KG Axial thread rolling head and method for forming an external thread on a workpiece with an axial thread rolling head

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB567700A (en) * 1943-09-11 1945-02-27 Nino Bonamini Improved tool for forming external screw threads
SU115164A1 (en) * 1957-05-25 1957-11-30 Д.З. Краснопольский Thread rolling dies
DE1225136B (en) * 1963-02-25 1966-09-22 Sawod Freser Thread rolling head for rolling threads on thin-walled workpieces, especially on pipes
CH582028A5 (en) * 1974-09-05 1976-11-30 Lechot Andre Thread cutting tool for small screws - has each cutter rotating on spindle with out head, giving longer threaded portion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB567700A (en) * 1943-09-11 1945-02-27 Nino Bonamini Improved tool for forming external screw threads
SU115164A1 (en) * 1957-05-25 1957-11-30 Д.З. Краснопольский Thread rolling dies
DE1225136B (en) * 1963-02-25 1966-09-22 Sawod Freser Thread rolling head for rolling threads on thin-walled workpieces, especially on pipes
CH582028A5 (en) * 1974-09-05 1976-11-30 Lechot Andre Thread cutting tool for small screws - has each cutter rotating on spindle with out head, giving longer threaded portion

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
MACHINES AND TOOLING. (STANKI I INSTRUMENTY) Bd. 43, Nr. 11, 1972, MELTON MOWBRAY GB Seiten 54 - 57 A.M.BRODSKII: 'Small thread-rolling dies' *
SOVIET INVENTIONS ILLUSTRATED Section PQ, Week 8951, 7. Februar 1990 Derwent Publications Ltd., London, GB; Class P52, AN 89-377231/51 & SU-A-1 466 858 (TIMOFEEV) 23. März 1989 *
SOVIET INVENTIONS ILLUSTRATED Section PQ, Week C07, 26. März 1980 Derwent Publications Ltd., London, GB; Class P52, AN B5304C/07 & SU-A-664 728 (ZHITNITSKII) 30. Mai 1979 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2792429A1 (en) 2013-04-19 2014-10-22 LMT Fette Werkzeugtechnik GmbH & Co. KG Axial thread rolling head and method for forming an external thread on a workpiece with an axial thread rolling head
US9468969B2 (en) 2013-04-19 2016-10-18 Lmt Fette Werkzeugtecnik Gmbh & Co. Kg Axial thread rolling head and method for forming an external thread on a workpiece with an axial thread rolling head
CN103691856A (en) * 2013-07-29 2014-04-02 曹立峰 Method for controlling forward speed of handpiece by automatic rib-stripping thread roller

Also Published As

Publication number Publication date
DE59302770D1 (en) 1996-07-11
EP0552713B1 (en) 1996-06-05
DE4201446A1 (en) 1993-07-22

Similar Documents

Publication Publication Date Title
DE3934495C1 (en)
DE3007245C2 (en) Tooth trim for rollers and support segments of textile machines
DE2453635B2 (en) Pre-tensioned differential double nut
DE2803925C2 (en) Opening roller for open-end spinning machines
DE3031216A1 (en) CHUCK FOR TAPS.
EP0141283A1 (en) Pinned roller for textile machines
DE2559145C3 (en) Deburring tool
DE2807618A1 (en) TUNING DEVICE FOR A STRING INSTRUMENT
EP0552713B1 (en) Tool for rolling threads
DE2848202B1 (en) Closure for a large diameter vessel
DE2242266A1 (en) HOLDER FOR OPTICAL DEVICES
DE9313722U1 (en) Infinitely adjustable brush holder
DE20320068U1 (en) Connection of two machine parts
DE2948242C2 (en) Stamp for presses with a link guide
DE3828482C2 (en) Pushing or pulling tool
EP0173862A2 (en) Apparatus for making grooves in work-pieces, preferably in cylindrical work pieces
DE3141733A1 (en) Apparatus for open-end spinning
DE2516139A1 (en) Spiral staircase inter-step height-adjustable spacer - has notch-locking spiral surfaces on interfacing part-element end faces
DE3432939C2 (en)
DE19827396C2 (en) Clamping device with adjustable counter bearing
DE2311476A1 (en) INTERNAL SMOOTH ROLLING TOOL
DE4320978C2 (en) Flaring tool
DE3538237A1 (en) Trepanning bit
DE1477040A1 (en) Tool holder for rolling tools
DE1752683B1 (en) Device for bending helical rings made of wire

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

RBV Designated contracting states (corrected)

Designated state(s): CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19931210

17Q First examination report despatched

Effective date: 19950220

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19960605

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19960605

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19960605

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

REF Corresponds to:

Ref document number: 59302770

Country of ref document: DE

Date of ref document: 19960711

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960809

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960905

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980109

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980119

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19980126

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990131

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990224

Year of fee payment: 7

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990119

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990930

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001101