WO2017140837A1 - Tête d'usinage de filets - Google Patents

Tête d'usinage de filets Download PDF

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Publication number
WO2017140837A1
WO2017140837A1 PCT/EP2017/053604 EP2017053604W WO2017140837A1 WO 2017140837 A1 WO2017140837 A1 WO 2017140837A1 EP 2017053604 W EP2017053604 W EP 2017053604W WO 2017140837 A1 WO2017140837 A1 WO 2017140837A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling head
thread rolling
fluid
thread
flushing
Prior art date
Application number
PCT/EP2017/053604
Other languages
German (de)
English (en)
Inventor
Adam Beben
Christian Gutsche
Stefan Janke
Raphael Lienau
Original Assignee
Lmt Fette Werkzeugtechnik Gmbh & Co. Kg
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 Lmt Fette Werkzeugtechnik Gmbh & Co. Kg filed Critical Lmt Fette Werkzeugtechnik Gmbh & Co. Kg
Publication of WO2017140837A1 publication Critical patent/WO2017140837A1/fr

Links

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
    • B21H3/048—Thread-rolling heads working tangentially
    • 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
    • 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
    • B21H3/02—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
    • B21H3/046—Thread-rolling heads working radially

Definitions

  • the invention relates to a thread rolling head comprising at least two threaded rollers each rotatably mounted on an axis, wherein between the thread rolls a machining area for the thread forming machining of a workpiece is formed.
  • EP 0 811 443 B1 discloses a tangential thread rolling head.
  • axial and radial thread rolling heads are known. Thread rolling heads are used in machine tools and are exposed to chips from machining processes. While the threading process is carried out without cutting, in such machine tools, the threading process preceded by machining operations is performed. In this course, chips can be deposited on the thread rolling head, in particular the thread rolls. If a chip is located between the thread rolls and the workpiece to be machined, overpressure can occur during the threading process, and in the worst case, a breakage of the thread roll and thus a malfunction of the thread rolling head.
  • the invention has for its object to provide a thread rolling head of the type mentioned, in which also minimizes the risk of malfunction in cutting processes, increases the service life and the processing result can be improved.
  • the invention solves the problem in that a flushing component is arranged on the thread rolling head, wherein at least one fluid channel connected to a flushing fluid supply is formed within the flushing component, and wherein the at least one fluid channel opens into at least one fluid outlet opening of the flushing component through which fluid exits into the machining area during operation of the thread rolling head.
  • the threaded rollers may be in engagement with a gear coupling the threaded rollers, in particular a synchromesh.
  • the axes of rotation of the thread rollers can be parallel to each other.
  • a flushing component is arranged on the thread rolling head.
  • at least one fluid channel connected to a flushing fluid supply is formed.
  • the at least one fluid channel is connected to at least one fluid outlet opening of the flushing component.
  • the machining area is the area where the workpiece is located and threading engagement with the thread rolls of the thread rolling head.
  • the flushing component may for example consist of a plastic or a metal material.
  • the flushing fluid may in particular be a flushing fluid.
  • the flushing fluid may also have a cooling effect. In particular, it may be a rinsing and cooling liquid, such as water and / or oil.
  • At least one fluid channel formed in the flushing component can change its direction once or several times within the flushing component. This configuration provides great flexibility with regard to the arrangement of the fluid channels, in particular the discharge direction of the fluid in the processing area and thus also with regard to the design of the flushing component.
  • the flushing component may have a plurality of fluid outlet openings, through which fluid escapes in different directions into the processing area during operation of the thread rolling head. In this way, the flushing fluid can be brought more targeted to the required locations of the processing area by the flushing fluid is directed from different directions to the processing area.
  • a main fluid channel connected to the flushing fluid inlet and a plurality of distribution fluid channels branching from the main fluid channel and opening into the plurality of fluid outlet openings may be formed. Due to this embodiment, only one transfer opening to the fluid supply or the thread rolling head is required despite flexible and multiple application of the flushing fluid in the processing area. In this case, the main fluid channel and / or in particular the Verteilfluidkanäle within the Spülbauteils their direction one or more times.
  • the flushing component has a base body attached to the thread rolling head and at least one flushing arm projecting from the base body, wherein at least one of the distributing fluid channels is formed within the at least one flushing arm, and at the end of the at least one rinsing arm at least one of the fluid outlet openings is formed.
  • the main body may have a plurality of fluid outlet openings, wherein the main fluid channel and a plurality of distributing fluid channels opening into the fluid outlet openings are formed in the base body. It is also possible to provide a plurality of rinsing arms, for example two or more than two rinsing arms.
  • the rinse arms extend in different directions starting from a main body of the rinse component attached to the thread rolling head.
  • the rinse arms can change direction one or more times.
  • the distribution fluid passages formed in the rinsing arms also change their direction once or several times. In this way, poorly accessible areas of the processing area can be safely supplied with flushing fluid.
  • the main body of the flushing component may have a plurality of fluid outlet openings.
  • the main body may for example have a flat basic shape and be attached to the thread rolling head, for example by screwing.
  • a fluid supply channel is formed, the first end of which opens into a first transfer opening connected to the at least one fluid channel formed in the flushing component and the second end of which opens into a second transfer opening connected to the flushing fluid supply ,
  • the main fluid channel of the flushing component may be connected to the first transfer opening.
  • the fluid supply channel in the thread rolling head may have been introduced by drilling, for example.
  • a roll head holder holding the thread rolling head in which a fluid supply channel is likewise formed, whose first end opens into a third transfer opening connected to the second transfer opening of the fluid supply channel formed in the thread rolling head, and whose second end opens the flushing fluid supply is connected.
  • the roll head holder may for example be fork-shaped, wherein the thread rolling head with a holding portion between the Forks of the rolling head holder is clamped.
  • the roll head holder may for example consist of a metal material.
  • the fluid supply channel formed inside the rolling head holder can change its direction once or several times.
  • the thread rolling head transfer openings can be chosen such that the fluid supply channel can be formed in the thread rolling head, for example by drilling, and thus with less flexibility with regard to the channel geometry.
  • At least one of the transfer openings may be sealed by a sealing ring against a fluid outlet.
  • all transfer openings between the flushing component and the thread rolling head as well as between the thread rolling head and the rolling head holder can be sealed by a sealing ring.
  • the sealing ring may be an O-ring in a particularly practical manner.
  • the sealing ring may for example consist of a rubber material or plastic.
  • the sealing ring can furthermore be arranged or held in an annular groove of the rolling head holder and / or the threaded rolling head and / or the flushing component. The sealing ring is then clamped between the adjacent components and thus ensures the required sealing.
  • the flushing component and / or the roll head holder have been produced in layers in an additive process.
  • they can be produced in a 3D printing process by using a form of material applied in layers and constructed by selective melting or sintering of the discharged material of the rolling head holder and / or the Spülbauteil.
  • a laser melting or laser sintering can be used. It is possible in this way a precise production with the greatest flexibility.
  • substantially arbitrarily shaped internal fluid channels can be formed with one or multiple changes of direction in the flushing component or the roll head holder, which can not be produced by drilling.
  • the transfer of the flushing fluid from the rolling head holder can be realized in a simple manner via the conventionally produced thread rolling head, for example, into the flushing component.
  • the transfer openings in the rolling head holder and in the flushing component can be freely selected so that the supply channel can be produced by drilling, for example, in the thread rolling head which is not produced in an additive manner.
  • the thread rolling head according to the invention may be a tangential thread rolling head.
  • the thread rolling head may comprise two fork-shaped rolling head arms, in each of which one of the thread rolls is received.
  • the threaded rollers can be inserted laterally into a mounting position in the rolling head arms before installation of the axes, in which one of the axes can be inserted into a bearing bore of the thread rollers.
  • it may also be an axial thread rolling head or a Radialge winderollkopf. Accordingly, it is possible that the thread rolling head comprises a rolling head holder on which three thread rollers are rotatably mounted.
  • the rolling head arms may be pivotally mounted on the rolling head holder about a common, parallel to the roller axes axis, wherein adjusting means are provided for adjusting the pivotal position of the rolling head arms on the rolling head holder.
  • adjusting means are provided for adjusting the pivotal position of the rolling head arms on the rolling head holder.
  • the rolling head arms are not movable relative to each other, in particular are not pivotable.
  • FIG. 1 shows a thread rolling head according to the invention in a perspective view
  • FIG. 2 shows the thread rolling head of FIG. 1 in a plan view
  • FIG. 3 shows a sectional view along the line A-A in FIG. 2
  • FIG. 4 shows a flushing component of the thread rolling head shown in FIG. 1 in a perspective view
  • FIG. 5 shows the flushing component from FIG. 4 in a partially transparent view
  • FIG. 6 is a perspective view of the thread rolling head of FIG. 1 without Spülbauteil in a perspective view
  • FIG. 7 shows the thread rolling head from FIG. 1 without roll head holder in a perspective view
  • FIG. 8 shows the rolling head holder of the thread rolling head shown in FIG. 1 in a perspective view
  • FIG. 8 shows the rolling head holder of the thread rolling head shown in FIG. 1 in a perspective view
  • FIG. 9 shows the roll head holder shown in FIG. 8 in a further perspective view, FIG.
  • FIG. 11 shows the roll head holder from FIG. 9 in a further partially transparent representation
  • FIG. 12 shows the roll head holder from FIG. 9 in a longitudinally sectioned view
  • FIG. 13 is an enlarged view of the detail B of FIG. 12th
  • the thread rolling head according to the invention shown in Figures 1 to 3 has a first forked Rollkopfarm 10 in which a first thread roller 12 is rotatably mounted.
  • a second threaded roller 14 is rotatably mounted in a second forked rolling head arm 16.
  • the threaded rollers 12, 14 are coupled together via a synchronous transmission.
  • the rolling head arms 10, 16 are attached to a likewise forked roll head holder 18.
  • the roll head holder 18 is connected to a clamping section 20 for clamping in a machine tool, as can be seen in Fig. 3 at reference numeral 22.
  • the thread rolling head shown in FIGS. 1 to 3 is a tangential thread rolling head.
  • a processing area 24 for machining a workpiece not shown in detail is formed between the thread rollers 12, 14, a processing area 24 for machining a workpiece not shown in detail is formed.
  • a cylindrical workpiece is delivered to the processing area 24 and processed thread forming between the thread rollers 12, 14.
  • a flushing component 28 is fastened to a machining area 24 facing, to be recognized in Fig. 6 inner surface 26 of the thread rolling head, in this case screwed ver, as shown in Fig. 1 for one of the screw connections 30.
  • the flushing member 28 is shown in more detail in Figures 4 and 5. It has a relatively flat base body 32 which is screwed through holes 34, 36 on the inner surface 26 of the thread rolling head.
  • two flushing arms 38, 40 are integrally connected to one another. The ends 42 and 44 of the flushing arms 38, 40 are bent over the main section of the flushing arms 38, 40, upward in FIG. 4, and open into fluid outlet openings 46 , 48. As can be seen, for example, in FIG.
  • these fluid outlet openings 46, 48 in FIG. 1 are directed from below onto the processing area 24.
  • the main body 32 of the flushing component 28 likewise comprises a plurality of fluid outlet openings 50, which are likewise directed in the processing region 24 in different directions in the mounted state.
  • the base body 32 has on its rear side an inlet opening 52, with which a main fluid channel 54 is connected. From the main fluid channel 54 branch off a plurality of distribution fluid channels 56, which are each connected to one of the fluid outlet openings.
  • a flushing fluid for example a flushing fluid
  • a flushing fluid is discharged from different directions into the machining area 24 and chips produced in this way during machining are removed and, at the same time, a cooling effect generated.
  • the base body 32 of the flushing member 28 may further be formed cavities for weight reduction.
  • a fluid supply channel is formed in the thread rolling head, through which the flushing fluid is supplied to the flushing component 28, in particular the inlet opening 52, during operation.
  • a first transfer opening 58 communicating with the fluid supply channel is formed on the inner surface 26 of the thread rolling head (FIG. 6), which is aligned with the inlet opening 52 of the flushing component 28 in the state of the flushing component 28 mounted on the thread rolling head.
  • the other end of the formed in the threaded roller head fluid supply channel opens into a particular in Fig. 7 to be recognized second transfer port 60.
  • the second transfer port 60 is adjacent to a threaded hole 62 into which a threaded bolt 64 is screwed for attaching the roll head holder 18 to the thread rolling head , In Fig.
  • the rolling head holder 18 is shown disassembled from the thread rolling head state, wherein the rolling head holder 18 is shown in Fig. 8 from the bottom.
  • a third transfer opening 66 can be seen, which comes into coincidence with the second transfer opening 60 of the thread rolling head in the state of the rolling head holder 18 mounted on the thread rolling head.
  • a fluid supply channel is formed, which in this case partially extends through the chucking section 20 through to a supply opening 68 to be seen in FIG. 8. This is connected in operation to a flushing fluid pressure supply.
  • the fluid supply channel formed in the fork-shaped roll head holder 18 is shown in dashed lines in FIG. 11 at reference numeral 70.
  • a transfer opening for transferring the fluid from the chucking section 20 can be seen. Visible changes the fluid supply channel 70, as well as the channels formed in the Spülbauteil 28 once or more times its direction.
  • the transfer openings to the thread rolling head can be flexibly arranged such that the fluid supply channel formed in the thread rolling head can be introduced by drilling, for example.
  • Both the flushing component 28 shown in the figures and the rolling head holder 18 shown in the figures have been constructed in layers in an additive 3D printing process. In this way, the channels generated within these components can be flexibly formed with a wide variety of geometries. Both components can consist of a metal material. However, it is also possible that one or both of said components consist of a plastic.
  • the third transfer opening 66 formed in the rolling head holder 18 is surrounded by an annular groove 72.
  • a sealing ring 74 in particular an O-ring, is arranged for sealing the transition to the thread rolling head.
  • the sealing ring 74 may be held by an interference fit in the annular groove 72, for example.
  • Such sealing rings optionally including such annular grooves, may be provided at all transfer points between the different components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Tête d'usinage de filets comprenant au moins deux galets de filetage (12) montés rotatifs respectivement sur un axe, une zone d'usinage (24) étant formée entre les galets de filetage (12) et servant à former des filets sur une pièce, un élément de nettoyage (28) étant disposé sur la tête d'usinage de filets, au moins un canal fluidique relié à une alimentation en fluide de nettoyage, se trouvant dans l'élément de nettoyage (28), et l'au moins un canal fluidique débouchant dans au moins une ouverture de sortie de fluide de l'élément de nettoyage, ouverture à travers laquelle le fluide sort pour atteindre la zone d'usinage (24) lors du fonctionnement de la tête d'usinage de filets.
PCT/EP2017/053604 2016-02-19 2017-02-17 Tête d'usinage de filets WO2017140837A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016100891.3 2016-02-19
DE202016100891.3U DE202016100891U1 (de) 2016-02-19 2016-02-19 Gewinderollkopf

Publications (1)

Publication Number Publication Date
WO2017140837A1 true WO2017140837A1 (fr) 2017-08-24

Family

ID=55638417

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/053604 WO2017140837A1 (fr) 2016-02-19 2017-02-17 Tête d'usinage de filets

Country Status (2)

Country Link
DE (1) DE202016100891U1 (fr)
WO (1) WO2017140837A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376727A (en) * 1939-09-21 1945-05-22 Schutte Albert Device for making screw threads
US2694322A (en) * 1949-10-20 1954-11-16 Landis Machine Co Threading appliance
FR1237571A (fr) * 1959-03-09 1960-07-29 Nat Acme Co Tête à profiler à galets
JP2001001096A (ja) * 1999-06-17 2001-01-09 Minebea Co Ltd ねじ転造方法及びねじ転造装置
EP0811443B1 (fr) 1996-06-07 2001-12-12 Wilhelm Fette GmbH Tête de roulage tangentiel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376727A (en) * 1939-09-21 1945-05-22 Schutte Albert Device for making screw threads
US2694322A (en) * 1949-10-20 1954-11-16 Landis Machine Co Threading appliance
FR1237571A (fr) * 1959-03-09 1960-07-29 Nat Acme Co Tête à profiler à galets
EP0811443B1 (fr) 1996-06-07 2001-12-12 Wilhelm Fette GmbH Tête de roulage tangentiel
JP2001001096A (ja) * 1999-06-17 2001-01-09 Minebea Co Ltd ねじ転造方法及びねじ転造装置

Also Published As

Publication number Publication date
DE202016100891U1 (de) 2016-03-15

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