WO2021156355A1 - Outil de laminage et procédé de laminage d'un profilé - Google Patents

Outil de laminage et procédé de laminage d'un profilé Download PDF

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Publication number
WO2021156355A1
WO2021156355A1 PCT/EP2021/052643 EP2021052643W WO2021156355A1 WO 2021156355 A1 WO2021156355 A1 WO 2021156355A1 EP 2021052643 W EP2021052643 W EP 2021052643W WO 2021156355 A1 WO2021156355 A1 WO 2021156355A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling
disk
profile
workpiece
area
Prior art date
Application number
PCT/EP2021/052643
Other languages
German (de)
English (en)
Inventor
Stefan Lüder
Michael FELKE
Peter Brau
Original Assignee
Profiroll Technologies 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 Profiroll Technologies Gmbh filed Critical Profiroll Technologies Gmbh
Priority to EP21705114.3A priority Critical patent/EP4100186A1/fr
Publication of WO2021156355A1 publication Critical patent/WO2021156355A1/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
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
    • 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
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • 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
    • B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other

Definitions

  • the invention relates to a rolling tool and a method for rolling a profile, in particular a spline on a workpiece.
  • Feed-through rolling processes are mostly used in the production of long profiles and / or on hollow shafts. turns to keep the pressure on the workpiece low. Excessive pressures can lead to cracks and distortions on the workpiece, which is undesirable.
  • Round tools are not limited to the arrangement and operating conditions described in DE 10 2007 039 959 A1.
  • three or more round rolling tools can be arranged around the workpiece in order to apply a profile to a workpiece, see for example DE 803 232 A1.
  • the invention is based on the object of creating a rolling tool for rolling a profile, in particular a spline on a workpiece, as well as a corresponding method for this purpose, which overcomes the disadvantages of the prior art.
  • a rolling tool for rolling a profile, in particular a spline on a workpiece comprises a rolling disk package which has at least one main disk and an interchangeable disk that is detachably fastened to it in a rotationally fixed manner.
  • the interchangeable disc is upstream of the main disc with respect to a working direction.
  • the components referred to as disks in the context of the present disclosure can be components of a rolling beam as well as of a round rolling tool.
  • a working direction is identified with the direction of the workpiece feed.
  • the working direction can, but does not have to, coincide with a main or rotational axis of the disk package.
  • the working direction is perpendicular to the movement of the roll bar in the rolling process.
  • the device is set up to carry out a push-through rolling process.
  • the interchangeable disk includes an inlet area for rolling the workpiece.
  • the interchangeable disc meets the workpiece first and is mainly stressed by it, i.e. most of the forming work is carried out by the interchangeable disc. Since this is detachably attached to the main disc, it can be replaced without much effort when worn, which brings a considerable material saving with it, since the main disc and possibly other existing discs can ideally continue to be used.
  • the interchangeable disk has a profile recess or a chamfer on the front side in the working direction, which forms the inlet area.
  • the area of the bevel is designed in such a way that in this area the profile rises from the end face in the direction of the calibration.
  • the teeth get deeper and deeper until they approximate the final tooth shape.
  • the profile depression has a uniform profile depth along the working direction, but is incorporated at an angle with respect to the working direction, so that the workpiece only gradually meshes with the workpiece along the working direction.
  • the invention can be used for rolling both short and long workpieces who the, in particular for example for the production of toothed shafts, gears, rotor shafts
  • the invention is particularly suitable for the formation of external toothings of gear wheels or gear shafts.
  • Helical or spiral gears and the like can also be produced with the tool according to the invention.
  • the workpieces can also be solid or hollow. Due to the relatively low pressure on the work piece, an application is particularly suitable for hollow work pieces and / or long profiles.
  • the profile of the disks can be any, for example serrations or involute gears can be created on the workpiece.
  • the interchangeable disk can be made from the same material as or from a different material than the main disk. Due to the fact that the interchangeable disk does most of the work on the workpiece during operation, provision can advantageously be made to use a higher quality material for the interchangeable disk than for the main disk, for example a hard metal. In the event of wear, costs can thus be saved, while at the same time the service life is increased. Alternatively, for example, a more cost-effective material than for the main disk can also be used.
  • the interchangeable lens and the main lens or just the interchangeable lens can also be equipped with coatings in order to optimize material properties.
  • the width of the interchangeable pane can be configured in the range from 2 to 50%, preferably in the range between 5 and 10%.
  • a bevel angle or a profile depression angle in the inlet area is preferably as small as possible, since the deformation per feed should be as small as possible.
  • the angle is preferably between 5 ° and 35 °, more preferably between 10 ° and 20 °, in particular about 15 °. At angles smaller than 5 °, the entry area would become too large, which leads to high material costs for the tool.
  • the bevel angle or a profile depression angle in the inlet area is often limited in size by the component geometry.
  • the rolling disk package in particular the interchangeable disk and / or the main disk, can have a calibration area which is characterized by a constant profile height, in particular constant tooth height and tooth shape, along the working direction.
  • the rolling disk set in particular the main disk, has a relief area which is preferably characterized by a lowering of the profile along the working direction.
  • a constant profile depth with a setback of the profile at an angle can preferably be provided, but alternatively also a reduction in the profile depth or a change in the profile shape so that the workpiece gradually less meshes with the tool as it is advanced .
  • the relief area is arranged after the calibration area with respect to the working direction.
  • a first relief area can also be provided in front of the calibration area and a second relief area after the calibration area.
  • the roll disk set also comprises a chamfering disk, which is characterized by a profile elevation along the working direction.
  • a chamfering disk which is characterized by a profile elevation along the working direction.
  • workpieces that have a length approximately equal to the length of the main disk can be equipped with threading chamfers for the profile, for example for the toothing.
  • the chamfering of the toothing on the workpiece is used, for example, to improve the ability to be plugged together, for example in the case of external splines of gear wheels or shafts that are inserted into a hub with opposing teeth.
  • the gripping disk can be releasably attached to the main disk and in particular be positioned downstream of the main disk with respect to the working direction.
  • a workpiece that is processed in the machine and guided past the tool first comes into contact with the interchangeable disk, then with the main disk and finally with the bevel disk.
  • the main disk itself can have a chamfering area which, for example, adjoins the calibration area or the relief area, i.e. is located downstream of it.
  • One advantage of a separate gripping disk is that it is easier to manufacture the tool, since a one-piece manufacture of the calibration, relief and chamfering area is complex.
  • a rolling arrangement comprises at least one, preferably two, three or four rolling tools as described above, which are preferably arranged like a planet around a rolling area.
  • the rolling arrangement also includes at least a control, for example a CNC control, which is set up to feed the rolling tools to one another and to enable an axial displacement of the workpiece relative to the tools, for example with the aid of an advance of the workpiece against stationary rolling tools.
  • the control can move the rolling tools axially against a stationary workpiece.
  • a profile in particular a spline on egg nem workpiece by means of a rolling tool, in which an axial infeed of the workpiece to the rolling tool takes place along a work direction during a deformation of the workpiece, for. B. with stationary rolling tools or stationary workpiece, it is provided that the profile is reshaped in an inlet area, an optional calibration area and a relief area of the rolling tool.
  • the method can in particular be carried out with the rolling tools described above.
  • the features that were disclosed with reference to the rolling tool are accordingly to be understood as disclosed with reference to the method.
  • the functional width of the individual areas in particular the entry area, can be set as a function of the axial infeed speed.
  • the width of a calibration area can be matched to the axial infeed speed in such a way that each area on the workpiece comes into contact at least once with a corresponding counterpart on the calibration area.
  • the infeed of the workpiece to the rolling tool along the working direction is preferably a feed movement with a constant or variable feed speed.
  • FIG. 1 shows a top view of a rolling arrangement with a workpiece arranged therein
  • FIG. 2 shows a front view of a rolling tool according to a first embodiment
  • FIG. 3 shows a sectional view of the rolling tool along AA in FIG. 2
  • FIG. 4 shows an enlarged area B from FIG. 3 according to a first embodiment
  • FIG. 5 shows an enlarged area B from FIG. 3 according to a second embodiment
  • FIG. 6 shows a sectional view corresponding to the illustration in FIG. 3 through a rolling tool according to a further embodiment
  • FIG. 7 shows an enlarged area C from FIG. 6.
  • the invention is illustrated and described below using a round tool as an example. However, the invention can also be used for rolling bars as rolling tools.
  • FIG. 1 shows a rolling arrangement 2 of a rolling machine with two parallel and spaced apart rolling tools 10, in particular round rolling tools, which define a clear width between them for receiving a workpiece 4.
  • the rolling machine is for example for cold rolling profiles 6 such. B. formed as shown by longitudinal teeth of wave-shaped workpieces 4.
  • the rolling tools 10 are arranged, for example, on rolling carriages that can be freely positioned under computer control.
  • the rolling tools 10 are driven in synchronous rotation via a control (not shown), for example a CNC control, and at the same time moved towards one another by means of the control, so that the workpiece 4 is in contact or with the profile of the rolling tools 10. engages.
  • a control not shown
  • the workpiece 4 is pushed in a working direction 8 by the rolling tools 10, which coincides with the main axes 30 of the rolling tools 10 here, for example.
  • the feed is generated by a relative movement between the workpiece 4 and the rolling mill 10, z.
  • the feed can be carried out at a continuous or variable speed. After the workpiece 4 has been rolled, it has the profile 6.
  • the workpiece 4 is stored during the process in a workpiece holder 9, for example between centering points.
  • Fig. 2 shows a rolling tool 10 according to an embodiment of the invention in front view.
  • the perspective shows a transverse plane of the rolling tool 10, since the plane shown is perpendicular to the main axis 30 of the rolling tool 10.
  • the main axis 30 coincides with the working direction 8, as described with reference to FIG.
  • the rolling tool 10 in particular a round rolling tool, has a profile area 12 equipped with a tooth profile along its outer circumference.
  • the teeth of the profile area 12 can have any shape, for example wedge-shaped, notch-shaped or involute-shaped in section.
  • the profile area 12 can be designed to be homogeneous or inhomogeneous over the circumference of the rolling tool. For example, incremental elevations of the teeth over the circumference of the rolling tool 10 are possible. as is also described in more detail with reference to the other figures.
  • the rolling tool 10 comprises a rolling disk pack 14, which is described in more detail with reference to FIG. 3.
  • an attachment opening 16 for receiving it in a tool spindle (not shown).
  • the plug-on opening 16 is not circular in this embodiment, but has two tangential keyways 17, but this is purely exemplary.
  • the drive options of the rolling tool 10 by the tool spindle can be designed in many ways and z. B. comprise more than two Tan gentialkeilnuten 17 or a key connection.
  • the rolling tool 10 is preferably installed in a rolling arrangement (not shown), as described, for example, with reference to FIG. 1.
  • a rolling arrangement not shown
  • 1, 2, 3 or 4 such rolling tools 10 can be provided, which act on the typically round workpiece 4 at different points.
  • the illustrated rolling tool 10 has a number of fastening elements 18, which are here, for example, regularly at a 45 ° distance from one another at the same distance around the Main axis 30 are arranged around. With the aid of the fastening elements 18, the individual disks of the roller disk pack 14 are detachably and non-rotatably fastened to one another, which is better shown in FIG. 3.
  • FIG. 3 shows the rolling tool 10 from FIG. 2 along the section A-A.
  • the profile area 12 in the environment B is shown once again enlarged in FIGS.
  • the roll disk set 14 comprises a main disk 24 and an interchangeable disk 26 attached to it, which is positioned in front of the main disk 24 in relation to the working direction 8.
  • the interchangeable disk 26 is fastened to the main disk 24 by means of a tension disk 28.
  • the diameter of the clamping disk 28 is slightly smaller than the diameter of the main disk 24, so that there is no engagement with the workpiece.
  • the fastening elements 18, which have been described with reference to FIG. 2, are designed here once as a pin 20 and once as a screw 22, for example a cylinder pin and cylinder screw.
  • the person skilled in the art will expediently choose the fastening elements 18 in such a way that the individual disks of the rolling disk set 14 are fastened to one another sufficiently firmly.
  • the anti-rotation device and the anti-shift device are set up large enough to absorb static and dynamic forces from the work process.
  • the releasability and the mountability are determined in such a way that the panes can easily be changed by the user, particularly preferably without special tools.
  • the location and alignment of the fastening elements 18 are ideally coordinated with one another in such a way that the disks can be changed without having to dismantle the tool 10 from the rolling machine.
  • FIGS. 4 and 5 show two different embodiments of rolling tools 10 in the enlarged area B from FIG the working direction 8 marked.
  • the individual disks of the roller disk set 14 are not shown in FIGS. 4 and 5. Rather, various embodiments are possible here, as will be described in more detail below.
  • Fig. 4 shows the rolling tool 10 with an inlet area 32 of width b 3 , a calibrating area 34 of width b 4 and a downstream relief area 36 of width bs.
  • the interchangeable disk can comprise only part of the inlet region 32.
  • the main disk then also includes part of the inlet area 32, as well as the calibration area 34 and the relief area 36.
  • the interchangeable lens can encompass the entire inlet region 32.
  • the main disk then comprises the calibration area 34 and the relief area 36.
  • the interchangeable lens can encompass the entire inlet area 32 and part of the calibration area 34.
  • the main disk then includes the remaining part of the calibration area 34 and the relief area 36.
  • the interchangeable lens can include the inlet area 32 and the entire calibration area 34.
  • the main disk then includes the relief area 36.
  • the interchangeable lens can encompass the inlet area 32, the entire calibration area 34 and part of the relief area 36.
  • the main disk then comprises the remaining part of the relief area 36.
  • the interchangeable disk according to the embodiment shown has a bevel 40 in which a profile depth of the teeth increases in the working direction.
  • the bevel 40 can include, for example, an increase in the profile from 0 to a maximum profile depth.
  • the bevel 40 does not begin at a profile depth of zero, but rather at an inlet depth ti which, for example, is between a tenth and half of the profile depth in the calibration range is equivalent to.
  • the inlet depth ti typically denotes a value that results from half the difference between a pre-turning diameter and a root diameter.
  • the increase in the tread depth can be linear as shown.
  • the bevel 40 can have a radius or steps or also be designed in the form of a double bevel.
  • the chamfer 4 may be characterized 40 by a chamfer angle wi, which, as seen from FIG., As a tangent function from the inlet depth ti (assuming the beginning of tread depth at 0) and 3, the width b of the lead-in area 32 is obtained.
  • the bevel angle wi is preferably between 10 ° and 20 °.
  • the relief area 36 is arranged after the calibration area 34 with respect to the working direction 8 and is characterized by a lowering of the profile.
  • the profile is typically incorporated at a relief angle W 3.
  • the relief angle W 3 is preferably between 0 ° 10 'and 1 °.
  • FIG. 5 shows an alternative embodiment with inlet area 32 and relief area 36, that is without calibration area 34.
  • An essential difference of the embodiment according to FIG formed by a lower profile 42.
  • the profile depth ⁇ 2 is consistently large over the width b 3 , but incorporated with a first profile lowering angle W 2 to the working direction.
  • the area is thus conical in comparison to the calibration area 34.
  • the first profile depression angle W 2 is preferably between 10 ° and 20 °.
  • FIG. 6 shows a rolling tool 10 according to a further embodiment of the invention.
  • the representation in Fig. 6 is selected analogously to FIG. 3, only the upper part of the rolling tool 10 was shown in section.
  • the rolling tool 10 comprises a profile area 12, which is shown enlarged with surroundings C in FIG. 7.
  • the roller disk set 14 in addition to the main disk 24, interchangeable disk 26 and clamping disk 28, also includes a gripping disk 44, which is arranged downstream of the main disk 24 in relation to the working direction 8.
  • the workpiece 4 is thus first formed by the interchangeable disk 26, then by the main disk 24 and finally by the bevel disk 44.
  • FIG. 7 shows the area C in an enlarged illustration.
  • the main disk 24, the interchangeable disk 26 and the gripping disk 44 are shown here in relation to the functional areas.
  • the interchangeable disk 26 here comprises, for example, only the inlet area 32 and no parts of the calibration area 34 or relief area 36.
  • the main disk 24 here, purely by way of example, includes only a relief area 36 and also no calibration area 34. Other embodiments as described above are of course possible.
  • the gripping disk 44 follows, with an inclined profile and a second profile depression angle W4.
  • the first Profilab lowering angle w 2 and the second Profilabenkungswinkel W 4 can be the same or different sizes.
  • the profile lowering angle W2 and W 4 are different Lich large, since the second profile lowering angle W 4 is predetermined by the component geometry.
  • the second profile lowering angle W 4 is between 2 ° and 10 °.
  • the rolling tool 10 shown in Fig. 7 is specially designed for workpieces 4 whose usable profile length or tooth length corresponds approximately to the width bi2 of the main disk 24 ent.
  • the workpiece 4 is rolled through the inlet area 32, then passes through the calibration area (not shown) and the relief area 36 of the main disk 24, and is then guided over part of the width bi 4 of the bevel disk 44.
  • the chamfering disk 44 produces a chamfer of the profile on the workpiece 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un outil de laminage (10) pour laminer un profilé, en particulier une denture de cannelure sur une pièce au moyen d'un ensemble de disques de laminage, comprenant au moins un disque principal (24) et un disque interchangeable (26) fixé à demeure sur ce dernier. Selon l'invention, le disque interchangeable (26) présente une phase (40) ou une dépression profilée (42) dans la direction de travail (8). L'invention concerne également un procédé permettant de laminer un profilé, en particulier une denture de cannelure sur une pièce.
PCT/EP2021/052643 2020-02-07 2021-02-04 Outil de laminage et procédé de laminage d'un profilé WO2021156355A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21705114.3A EP4100186A1 (fr) 2020-02-07 2021-02-04 Outil de laminage et procédé de laminage d'un profilé

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020103151.3A DE102020103151A1 (de) 2020-02-07 2020-02-07 Walzwerkzeug und Verfahren zum Walzen eines Profils
DE102020103151.3 2020-02-07

Publications (1)

Publication Number Publication Date
WO2021156355A1 true WO2021156355A1 (fr) 2021-08-12

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Family Applications (1)

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PCT/EP2021/052643 WO2021156355A1 (fr) 2020-02-07 2021-02-04 Outil de laminage et procédé de laminage d'un profilé

Country Status (3)

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EP (1) EP4100186A1 (fr)
DE (1) DE102020103151A1 (fr)
WO (1) WO2021156355A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE51257C (de) * 1889-07-05 1890-03-19 THE SlMONDS STEEL AND IRON FORGING COMPANY LIMITED in London Walzplatten zur Herstellung von Schraubengewinden
DE803232C (de) 1951-04-02 1951-04-02 Schoppe & Faeser Feinmechanik Vorrichtung zum Herstellen von Zahnraedern und verzahnten Teilen nach dem Warmrollverfahren
DE925522C (de) * 1950-10-20 1955-04-21 Pee Wee Maschinen Und Appbau I Verfahren, Gewindewalzen und Maschine zum Walzen von Gewinde im Durchlauf
DE1013612B (de) * 1953-03-12 1957-08-14 Pee Wee Maschinen Und Appbau I Einrichtung zum Kaltwalzen von achsparallelen Profilen, z.B. Verzahnungen
US3735619A (en) * 1972-01-27 1973-05-29 Lear Siegler Inc Gear roll chamfering
EP0062441A2 (fr) * 1981-03-25 1982-10-13 Anderson-Cook, Inc. Arbre et outil de façonnage rotatif
CN2356779Y (zh) * 1998-07-16 2000-01-05 王雪云 变齿形螺旋轴向进给滚丝模
EP1270127B1 (fr) 2001-06-21 2004-06-09 The Gleason Works Outil de chanfreinage et d'ébavurage des extrémités frontales de dents des roues dentées
DE102007039959A1 (de) 2007-08-23 2009-02-26 Profiroll Technologies Gmbh Verfahren und Profilwalzmaschine zum Kaltwalzen von längsgerichteten Verzahnungen und Profilen bei langen wellenförmigen Werkstücken
TW200916222A (en) * 2007-10-12 2009-04-16 Ariki Anto Method of manufacturing thread rolling die and rolling screw shaft with small diameter and radius R round-bottom deep grooves
KR20110096479A (ko) * 2010-02-22 2011-08-30 유니온쓰루 가부시키가이샤 전조다이스
WO2019020619A1 (fr) * 2017-07-26 2019-01-31 Mag Ias Gmbh Procédé et dispositif pour la fabrication d'une denture sur une pièce cylindrique

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE51257C (de) * 1889-07-05 1890-03-19 THE SlMONDS STEEL AND IRON FORGING COMPANY LIMITED in London Walzplatten zur Herstellung von Schraubengewinden
DE925522C (de) * 1950-10-20 1955-04-21 Pee Wee Maschinen Und Appbau I Verfahren, Gewindewalzen und Maschine zum Walzen von Gewinde im Durchlauf
DE803232C (de) 1951-04-02 1951-04-02 Schoppe & Faeser Feinmechanik Vorrichtung zum Herstellen von Zahnraedern und verzahnten Teilen nach dem Warmrollverfahren
DE1013612B (de) * 1953-03-12 1957-08-14 Pee Wee Maschinen Und Appbau I Einrichtung zum Kaltwalzen von achsparallelen Profilen, z.B. Verzahnungen
US3735619A (en) * 1972-01-27 1973-05-29 Lear Siegler Inc Gear roll chamfering
EP0062441A2 (fr) * 1981-03-25 1982-10-13 Anderson-Cook, Inc. Arbre et outil de façonnage rotatif
CN2356779Y (zh) * 1998-07-16 2000-01-05 王雪云 变齿形螺旋轴向进给滚丝模
EP1270127B1 (fr) 2001-06-21 2004-06-09 The Gleason Works Outil de chanfreinage et d'ébavurage des extrémités frontales de dents des roues dentées
DE102007039959A1 (de) 2007-08-23 2009-02-26 Profiroll Technologies Gmbh Verfahren und Profilwalzmaschine zum Kaltwalzen von längsgerichteten Verzahnungen und Profilen bei langen wellenförmigen Werkstücken
TW200916222A (en) * 2007-10-12 2009-04-16 Ariki Anto Method of manufacturing thread rolling die and rolling screw shaft with small diameter and radius R round-bottom deep grooves
KR20110096479A (ko) * 2010-02-22 2011-08-30 유니온쓰루 가부시키가이샤 전조다이스
WO2019020619A1 (fr) * 2017-07-26 2019-01-31 Mag Ias Gmbh Procédé et dispositif pour la fabrication d'une denture sur une pièce cylindrique

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Publication number Publication date
EP4100186A1 (fr) 2022-12-14
DE102020103151A1 (de) 2021-08-12

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