EP3956090A1 - Outil d'usinage par enlèvement de copeaux avec un insert de coupe fixé de manière ajustable. - Google Patents

Outil d'usinage par enlèvement de copeaux avec un insert de coupe fixé de manière ajustable.

Info

Publication number
EP3956090A1
EP3956090A1 EP20719418.4A EP20719418A EP3956090A1 EP 3956090 A1 EP3956090 A1 EP 3956090A1 EP 20719418 A EP20719418 A EP 20719418A EP 3956090 A1 EP3956090 A1 EP 3956090A1
Authority
EP
European Patent Office
Prior art keywords
cutting
support surface
tool
insert
tool according
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.)
Pending
Application number
EP20719418.4A
Other languages
German (de)
English (en)
Inventor
Klaus Matheis
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.)
Guehring KG
Original Assignee
Guehring 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 Guehring KG filed Critical Guehring KG
Publication of EP3956090A1 publication Critical patent/EP3956090A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03403—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing
    • B23B29/03417—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by means of inclined planes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
    • B23C5/2208—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
    • B23C5/2226—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/24—Securing arrangements for bits or teeth or cutting inserts adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/24—Securing arrangements for bits or teeth or cutting inserts adjustable
    • B23C5/2462—Securing arrangements for bits or teeth or cutting inserts adjustable the adjusting means being oblique surfaces

Definitions

  • the invention relates to a cutting tool, in particular a
  • Cutting inserts are received outside the axis of rotation in an insert seat which is formed in a cutting insert carrier.
  • the cutting insert is penetrated by means of a
  • An active cutting edge protruding over the insert seat can be adjusted within the framework of a fine adjustment with regard to its axial or radial position, in that one of the edge support surfaces is displaced by means of a wedge gear.
  • the displaceable edge support surface is formed by a wedge surface of an actuating body displaceable parallel to the base surface.
  • the cutting insert With the cap screw tightened, the cutting insert can be fine-tuned either in the axial or radial direction. Similar kinematics are found in one
  • Cutting tool according to EP 1 447 162 B1 application.
  • Cutting tools equipped with cutting inserts are also known, for example from the documents EP 1 044 081 B1, DE 32 36 921 C1 or EP 2 101 944 B1, in which fine adjustment of the cutting inserts is possible in several directions, i.e. in the axial and radial direction . In these cases, however, it is not the cutting insert that is adjusted, but a cassette carrying the cutting insert. In the case of complex arrangements of cutting inserts, such a configuration is often not possible for reasons of space.
  • a generic tool is known from document EP 2 146 812 B1.
  • the fine adjustment of the cutting tip in the radial direction is accomplished via a very space-saving design of an adjusting mechanism in which a sleeve body equipped with a wedge surface supports a radially inner tip edge.
  • the sleeve body is mounted displaceably in a direction which is essentially perpendicular to the bottom surface of the insert seat, and it has a
  • the cutting insert can be finely adjusted in the radial direction, while it is supported by a further insert edge that runs at an angle to the inner edge of the insert, usually in a plane perpendicular to the tool axis.
  • Fine adjustment because the surfaces forming the insert seat can be worked into the carrier body with sufficient accuracy, so that there is no need for an axial fine adjustment.
  • the invention is based on the object of a generic
  • each of the two edge support surfaces is formed by a movably guided support body in the tool carrier body, each of the two support bodies being drivable by means of an associated adjusting device in order to enable fine adjustment of the cutting insert in the radial and axial direction.
  • Floor support surface allows the cutting insert to be adjusted in two directions at an angle to one another, e.g. in the radial and axial direction, to stabilize so far that the prescribed alignment of the cutting edge to the
  • the invention is particularly suitable for tools which, due to their use, require a relatively filigree structure of the cutting insert carrier forming the insert seat.
  • the installation space required for the components for fine adjustment can be further reduced by the development of claim 2.
  • this development results in increased flexibility when accommodating the support bodies and actuating devices in the tool. It is thus possible to optimally integrate the components required for fine adjustment of the cutting insert into a given tool structure. If the tool is designed according to claim 3, the cutting plate can be fine-tuned particularly precisely. This is because the wedge body is received in a guided manner in the wedge-shaped extension of the insert seat, so that the cutting insert can support itself over a large area on the wedge body even when the head screw is loosened or only slightly tightened.
  • the fine adjustment in the radial direction can also be decoupled from the adjustment in the axial direction when using cuboid cutting inserts.
  • Cutting plate outline shapes can be used to adjust the cutting plate in a purely radial or purely axial direction on the fixed adjustment ratio, which results from the wedge gear and the angle between the plate edges, which are supported on the edge support surfaces.
  • a particularly stable axial support of the cutting plate results with the development according to claim 4.
  • the bottom side preferably closes
  • the bottom support surface can in principle be at any desired angle to the axial support surface of the wedge body. However, if the bottom
  • the support surface is formed parallel to the bottom support surface for the cutting insert, resulting in advantageous simplifications in terms of manufacturing technology.
  • the bottom support surface can be aligned perpendicular to the axial support surface of the wedge body.
  • the configuration of the further adjusting device according to claim 6 has, in addition to the small space requirement, the further special advantage that the sensitivity of the fine adjustment can be adjusted solely via the ratio of the thread pitches. It turns out that it is basically sufficient for a sufficiently stable support of the cutting plate if the edge support surfaces are connected to the cutting plate
  • Cutting insert geometry the assignment of the position to be supported
  • the flat support preferably leaves out the cutting edges of the cutting insert.
  • the inventive concept of the tool design described above is not limited to a specific geometry of the cutting insert.
  • the cutting insert can essentially have the shape of a straight prism with a triangle, rectangle or parallelogram as the base area, which simplifies the manufacture of the insert seat.
  • the cutting insert essentially has the shape of a straight prism with a rectangle or parallelogram as a base, which can be used on the cutting insert
  • FIG. 1 shows a perspective illustration of a rotationally driven tool which is equipped with several sets of finely adjustable cutting inserts
  • FIG. 2 shows the detail “II” according to FIG. 1;
  • FIG. 3 shows, on an enlarged scale, a partially broken away plan view of a cutting insert with fine adjustment in the axial and radial directions;
  • FIG. 4 shows the sectional view “IV-IV” in FIG. 3;
  • FIG. 5 the view “V” according to FIG. 3.
  • FIG. 6 shows the view “VI” according to FIG. 5.
  • FIG. 1 shows a cutting tool which can be driven in rotation and which is designated by the reference numeral 10 and which has a tool carrier body 14 which has a rotation axis 12 and which is driven in a clockwise direction.
  • the tool carrier body 14 is designed for coupling to a spindle (not shown) with a FISK interface and accordingly has a flea shaft 16 on the spindle side, to which a carrier shaft 22 connects via a coupling collar 18 with a gripper groove 20, which - preferably detachable and centered - the actual cutting part 24 with a multiplicity of spoke-like or star-like arranged tool carrier webs 26 holds.
  • Each tool carrier web 26 is equipped with cutting bodies 28, 30, 32, of which the cutting bodies 28 are firmly soldered and the cutting bodies 30 and 32 are formed by adjustable cutting inserts. Guide strips are denoted by reference numeral 34.
  • the tool 10 is designed as a boring tool, in particular as a drilling fine machining tool, the sets of cutting bodies 28, 30 and 32 machine different, axially staggered bore surfaces. In order to ensure the required working accuracy and service life of the tool, it is important that the tools in a cutting group or set of cutting edges
  • Cutting group are positioned on the same cutting circle. At the same time, it must be ensured that the front cutting edges 28-1, 30-1 and 32-1 of a relevant group of cutting edges have the same axial distance from the coupling collar 18 of the
  • Stepped bore is machined, it must be ensured that the axial distance AX1 between the front cutting edges 28-1 and 30-1 and / or AX2 between the front cutting edges 30-1 and 32-1 are within the permitted tolerance range. Therefore, the cutting bodies 30, 32, which in the embodiment shown in FIG.
  • Essentially cuboid-shaped cutting inserts with a diamond shape are adjustable, preferably finely adjustable, received in so-called insert seats 40, 42 which are worked into the tool carrier webs 26, e.g. are milled.
  • insert seats 40, 42 which are worked into the tool carrier webs 26, e.g. are milled.
  • the cutting inserts 30, 32 are in the associated insert seats 40,
  • the insert seat each forms a floor support surface 44 for the flat
  • Rounded section 64 widening, stepped through hole 62 penetrates eccentrically in such a way that the screw head denoted by 66 the cutting insert 30, 32 at flat pressing against the bottom support surface 44 simultaneously presses against both support bodies 50 and 52, more precisely against their edge support surfaces 70, 72.
  • the cutting tip 30 or 32 rests flat against the associated edge support surface 70 or 72. In principle, however, point, multi-point or line contact would also be possible.
  • the cutting tip 30 or 32 which in the embodiment shown has the shape of a straight prism with a rectangle or parallelogram as a base and is arranged in the tip seat 40 or 42 such that a plate edge 54 is perpendicular to the bottom support surface 44 in the plan view perpendicular to the Tool axis 12 extends, on the tool carrier web 26 in two mutually at an angle
  • both edge support surfaces 70, 72 are formed by support bodies 50, 52 movably guided in the tool carrier body 26.
  • each of these support bodies 50, 52 can be driven by means of an associated adjusting device, which will be described in more detail below.
  • the support body 50 has the shape of a cylindrical sleeve body which is movably guided in a cylindrical recess 74 with the axis A74.
  • the axis A74 is perpendicular to the bottom support surface 44 of the cutting insert 30.
  • the sleeve body 50 has a continuous internal threaded bore 76 offset eccentrically to the axis A74 by the dimension EX (see Figure 3 and Figure 4), into which an adjusting screw 78 engages, which acts as a drive spindle for the sleeve body 50 is used.
  • the inner diameter of the cylindrical recess 74 is - as best shown in FIG. 4 - caught axially between two stops, one of the axial stops from the bottom of the cylindrical recess 74 and the other being axial
  • Stop is formed by a shoulder 82 of a bottom undercut of the cylindrical recess 74.
  • the cylindrical sleeve body 50 can be placed on the adjusting screw 78, whereupon the sleeve body 50 can be drawn into the stop position shown in FIG. 4 by turning the adjusting screw 78 using a socket wrench.
  • Sleeve body 50 is aligned parallel to a radially inner plate edge surface 54F, so that when the cutting insert 30 is mounted it can provide for its planar radial support. Via the drive movement of the adjusting screw 78, the outer wedge surface 70, that is, the one that radially supports the cutting insert
  • Edge support surface displaced in the radial direction, whereby a finely adjustable radial stop for the cutting tip 30 or 32 is provided.
  • the adjusting device for the support body 52 is constructed as follows:
  • the edge support surface 72 of the support body 52 is formed by a side surface of a wedge body received in a wedge-shaped extension 48 of the insert seat 40.
  • the extension 48 of the insert seat 40 is supported by a bottom-side support surface 86, which adjoins the bottom support surface 44 via a step 96 and, for example, parallel to the
  • Floor support surface 44 extends, and an axial support surface 88 (see FIG. 5) at an angle thereto, preferably at right angles, is formed.
  • the wedge body 52 is accordingly guided by the surfaces 86 and 88 parallel to the base support surface 44, while its edge support surface 72 facing away from the axial support surface 88 rests preferably flat, particularly preferably over a large area, on the cutting tip 30, more precisely on the tip edge surface 56F.
  • the surfaces 72 and 56F are located in such a way that they guide the cutting insert 30 in a plane which is perpendicular to the tool axis 12.
  • the arrangement is preferably made such that the wedge body 52 does not touch the upper edge of the cutting insert.
  • the direction that runs parallel to the axis A90 of the differential thread screw 90 and thus skewed to the direction of movement A74 of the actuating body 50 is an axial direction
  • Fine adjustment of the cutting plate 30 is possible. The one related to this shift
  • the adjusting device used is structured as follows:
  • a differential threaded screw 90 is arranged parallel to the surfaces 86 and 88, which has a first threaded section 92 with the wedge body 52 and with its second thread section 94, which is different in terms of the thread pitch, including opposing thread section 94
  • Tool carrier body 26 is in engagement. About the drive movement of the
  • the wedge body 52 can be moved to fix or fine-tune the axial position of the cutting plate 30.
  • Cutting insert is also possible if only a very limited space is available.
  • the cutting insert 30 or 40 can be inserted into the insert seat 40, 42 in positions.
  • the head screw 60 can be screwed in so far in this position that the cutting plate rests against the adjusting bodies 50, 52 and flat against the
  • Differential threaded screw 90 and the wedge angle WK (see Figures 3 and 7) formed between the axial support surface 88 and the edge support surface 72 for the wedge body 52, a sufficiently large adjustment force can be applied to the cutting plate that it is adjustable even when the head screw 60 is tightened.
  • Cutting plate 30, 40 the set screw 78 is driven by means of a socket wrench that can be attached from the cutting plate so that the sleeve body 50 and thus the outer wedge surface 70 moves out of the receiving opening 74, the cutting plate 30 is moved in the radial direction (direction R2 in FIG 3) pressed outwards, while it constantly rests against the edge support surface 72 and thus remains radially guided. This ensures that the cutting tip 30, 32 does not tilt during fine adjustment even if the width B70 shown in FIG. 7 is only a fraction of the length L54F of the tip surface 54F.
  • the shape of the cutting insert is not restricted to the shape of an essentially straight prism with a parallelogram as a base.
  • the cutting plate can also be equipped with the base of a triangle, rectangle or some other polygon.
  • the only decisive factor is that an axial and radial fine adjustment of the cutting plate is made possible via the support body in such a way that one of the support bodies can guide and stabilize the cutting plate when the other support body is adjusted.
  • a cutting insert can also be used that uses a round cutting insert that forms secant outer surfaces.
  • the insert seat 40 or 42 can also be formed in a cutter carrier cassette.
  • the orientation of the axes for the adjustment of the support bodies 50, 52 to one another and with regard to the orientation of the floor support surface 44 can also be varied for optimal use of the available installation space.
  • the position of the floor support surface can also be changed, e.g. so that the front cutting edge 30-1 of the cutting insert 30 is positioned in relation to a plane containing the tool axis 12. It is also not necessary for the front cutting edge 30-1 of the cutting insert 30 to lie in a plane perpendicular to the tool axis 12.
  • the cutting insert 30 can also be formed by an indexable insert, in which case it is necessary to exclude the cutting edges from contact with the support bodies 50, 52.
  • the fine adjustment of the cutting plates can also be used for other tools, for example for milling or broaching tools or also for non-rotating tools that are used in lathes.
  • the adjustment of the support body can also take place from another point, e.g. from the rear of the tool carrier webs 26.
  • the stop for the screw head 80 of the adjusting screw 78 can also be provided by an axial locking ring.
  • the invention thus creates a cutting tool, in particular a rotationally drivable tool, with a tool carrier body having an axis, which either in a cassette or directly at least one insert seat for receiving a Cutting insert forms.
  • the cutting plate is by means of a penetrating it
  • Cap screw can be pressed with its base against a base support surface and with two plate edges enclosing an angle against one associated edge support surface of the insert seat.
  • Edge support surfaces are formed by movably guided support bodies in the tool carrier body, which can be driven for the radial and axial fine adjustment of the cutting insert by means of an associated adjusting device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

L'invention concerne un outil d'enlèvement de copeaux, en particulier pouvant être entraîné en rotation, comprenant un corps porte-outil (26) présentant un axe (12), lequel constitue au moins un siège de plaquette (40) pour recevoir une plaquette de coupe (30) soit dans une cassette, soit directement. La plaquette de coupe peut être pressée, au moyen d'une vis à tête (60) passant à travers elle, avec son fond contre une surface de support de fond (44) et avec deux arêtes de plaquette (54, 56) formant un angle (WP) l'une avec l'autre contre une surface de support d'arête associée (70, 72) respective du siège de plaquette (40). Afin d'obtenir un espace aussi étroit que possible lors du montage de plaquettes de coupe, de respecter des tolérances dimensionnelles de fabrication étroites et de protéger l'outil dans une mesure suffisante contre une usure excessive, les deux surfaces de support d'arête (70, 72) sont formées par des corps de support (50, 52) guidés de manière déplaçable dans le corps porte-outil, lesquels peuvent être entraînés en vue d'un ajustement radial et axial fin de la plaquette de coupe (30) à chaque fois au moyen d'un dispositif de commande associé (50, 70, 74, 78, 80, 82, respectivement 52, 90, 92, 94).
EP20719418.4A 2019-04-18 2020-04-15 Outil d'usinage par enlèvement de copeaux avec un insert de coupe fixé de manière ajustable. Pending EP3956090A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019205717.9A DE102019205717A1 (de) 2019-04-18 2019-04-18 Zerspanungswerkzeug mit einstellbar fixiertem schneideinsatz
PCT/EP2020/060572 WO2020212412A1 (fr) 2019-04-18 2020-04-15 Outil d'usinage par enlèvement de copeaux avec un insert de coupe fixé de manière ajustable.

Publications (1)

Publication Number Publication Date
EP3956090A1 true EP3956090A1 (fr) 2022-02-23

Family

ID=70289803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20719418.4A Pending EP3956090A1 (fr) 2019-04-18 2020-04-15 Outil d'usinage par enlèvement de copeaux avec un insert de coupe fixé de manière ajustable.

Country Status (4)

Country Link
US (1) US20220072625A1 (fr)
EP (1) EP3956090A1 (fr)
DE (1) DE102019205717A1 (fr)
WO (1) WO2020212412A1 (fr)

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DE2140004A1 (de) * 1971-08-10 1973-02-22 Walter Kieninger Senk- und fraeswerkzeug
DE3236921C1 (de) * 1982-10-06 1983-11-17 Fried. Krupp Gmbh, 4300 Essen Fräsmesserkopf
US4533281A (en) * 1983-10-14 1985-08-06 Dijet Industrial Co., Ltd. Cutter blade retention
SE454490B (sv) * 1984-07-05 1988-05-09 Seco Tools Ab Fres med instellbar kassett
DE3708034A1 (de) * 1987-03-12 1988-09-22 Zerspanungstech Gmbh & Co Kg Messerkopf
DE4003862A1 (de) * 1989-08-05 1991-02-07 Widia Heinlein Gmbh Messerkopf
FR2651703B1 (fr) * 1989-09-14 1994-06-17 Electro Metallurg Ste Indle Dispositif de reglage micrometrique d'une plaquette de coupe sur un porte-outil.
JP3970929B2 (ja) * 1996-01-31 2007-09-05 ヴィディア ゲゼルシャフト ミット ベシュレンクテル ハフツング 荒削り及び精密削りのための切削チップ
JP3199756B2 (ja) * 1997-03-27 2001-08-20 ケンナメタル インコーポレイテッド 調整可能なストッパ
DE19800440A1 (de) * 1998-01-08 1999-07-15 Maier Kg Andreas Messerkopf mit ein- bis dreidimensional verstellbarem Schneideinsatz und mit formschlüssig aufgenommenem Schneideinsatz
DE19951931B4 (de) * 1999-10-28 2009-03-12 GFE-Präzisionstechnik Schmalkalden GmbH Fräswerkzeug, insbesondere Fräskopf zum Plan- und Eckfräsen
DE10047079A1 (de) * 2000-09-22 2002-04-18 Kennametal Inc Zerspanungswerkzeug
ATE258094T1 (de) * 2000-12-05 2004-02-15 Mapal Fab Praezision Werkzeug zur spanenden feinbearbeitung von werkstücken
DE10108103B9 (de) * 2001-02-20 2009-11-26 Komet Group Gmbh Maschinenwerkzeug mit verstellbarer Schneidplatte
US7014393B2 (en) * 2003-02-07 2006-03-21 Dr. Joerg Guehring Clamping and adjustment apparatus for a cutting tool
DE20303316U1 (de) * 2003-02-28 2003-04-30 Guehring Joerg Drehangetriebenes Zerspanungswerkzeug
KR101526610B1 (ko) * 2006-11-13 2015-06-05 귀링 카게 금속 절삭 공구
EP2101944B1 (fr) * 2006-11-29 2014-07-16 Gühring OHG Outil d'usinage à enlèvement de copeaux
SE532162C2 (sv) * 2008-03-13 2009-11-03 Seco Tools Ab Publ Skär för fräsning med rillor på skärets undersida
KR20100068820A (ko) * 2008-12-15 2010-06-24 한국야금 주식회사 절삭용 밀링커터
IL197205A0 (en) * 2009-02-24 2009-12-24 Iscar Ltd Cutting tool having adjustment mechanism
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DE102017212200B4 (de) * 2017-07-17 2024-02-22 Gühring KG Zerspanungswerkzeug mit einem an einem grundkörper einstellbar gehaltenen schneideinsatz

Also Published As

Publication number Publication date
WO2020212412A1 (fr) 2020-10-22
DE102019205717A1 (de) 2020-10-22
US20220072625A1 (en) 2022-03-10

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