WO2018172462A1 - Plaquette de coupe réversible en étoile et système d'outil - Google Patents

Plaquette de coupe réversible en étoile et système d'outil Download PDF

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Publication number
WO2018172462A1
WO2018172462A1 PCT/EP2018/057304 EP2018057304W WO2018172462A1 WO 2018172462 A1 WO2018172462 A1 WO 2018172462A1 EP 2018057304 W EP2018057304 W EP 2018057304W WO 2018172462 A1 WO2018172462 A1 WO 2018172462A1
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WO
WIPO (PCT)
Prior art keywords
cutting
cutting plate
recess
insert
projections
Prior art date
Application number
PCT/EP2018/057304
Other languages
German (de)
English (en)
Inventor
Uwe HENZLER
Original Assignee
Ceramtec 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 Ceramtec Gmbh filed Critical Ceramtec Gmbh
Publication of WO2018172462A1 publication Critical patent/WO2018172462A1/fr

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
    • B23B29/04—Tool holders for a single cutting tool
    • B23B29/046—Tool holders for a single cutting tool with an intermediary toolholder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
    • B23B27/145—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness characterised by having a special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B23B27/1614—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert
    • B23B27/1622—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert characterised by having a special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B23B27/1625—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped by a clamping member acting almost perpendicularly on the chip-forming plane
    • B23B27/164—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped by a clamping member acting almost perpendicularly on the chip-forming plane characterised by having a special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/04—Overall shape
    • B23B2200/048—Star form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/08—Rake or top surfaces
    • B23B2200/086—Rake or top surfaces with one or more grooves
    • B23B2200/088—Rake or top surfaces with one or more grooves for clamping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/20—Top or side views of the cutting edge
    • B23B2200/205—Top or side views of the cutting edge with cutting edge having a wave form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/28—Angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2205/00—Fixation of cutting inserts in holders
    • B23B2205/12—Seats for cutting inserts

Definitions

  • the invention relates to a cutting plate for machining workpieces, wherein the cutting plate has cutting edges on its circumference and a tool system having a base body, a clamping element and a clamping means, wherein the base body has a recess with a plate seat for receiving the cutting plate and the cutting plate through the Clamping element is mounted in the recess on the insert seat.
  • an indexable insert having a regular polygonal shape with five to eight corners is fixed to one end of a tool base such that one of two adjacent sides of an outer peripheral surface serves as a rake face with a negative rake angle, the other of the two adjacent sides as a front one Flank surface serves; and an edge between the two adjacent sides serves as a cutting edge with a point angle. It is possible to swap the corners so that a total of 16 (8 * 2) cutting edges are available for an octagon indexable insert. The point angle is 135 ° for an octagon indexable insert.
  • An insert and a tool system are subject to high demands. These depend on the materials to be processed in conjunction with the process parameters such as feed rate, cutting depth and surface qualities to be produced.
  • the invention has for its object to improve an insert according to the preamble of claim 1 and a tool system according to the preamble of claim 1 1 to meet the increased process requirements. According to the invention, this object is achieved by the features of a cutting insert of claim 1 and by the features of a tooling system of claim 11.
  • An insert according to the invention has a significantly increased setting angle "A" (see Figure 4)
  • the angle between the longitudinal axis of the workpiece to be machined and the cutting edge of the insert is referred to as the setting angle "A".
  • This angular magnification according to the invention leads to a reduction of the engagement length of the cutting edge on the workpiece.
  • the so-called passive force "Fp" (see Figure 4) is reduced during machining, when the insert is used, and these measures according to the invention result in a reduced load on the tool system, the workpiece and the processing machine
  • the notch wear is minimized.
  • an insert when, in the following, an insert is meant, it always means an indexable insert which can have cutting edges both on its top side and on its bottom side.
  • the circumference of an insert according to the invention has in plan view the shape of a star (character or symbol) or gear.
  • a star-shaped closed curve is to be understood, wherein the distances, starting from a center of the outer shape, the circumference, to the outer shape may have different amounts.
  • a cuboid cutting plate has a star-shaped top and bottom, which are interconnected via a peripheral surface.
  • the periphery of the insert may be formed by projections and recesses in the form of serrations or teeth.
  • the projections and recesses may be uniformly distributed at equal distances from each other over the circumference.
  • the number of projections and recesses may be identical or may differ from each other.
  • the number of protrusions and recesses may be even or odd.
  • the circumferentially disposed projections and recesses may have identical dimensions, such as length, width, angle, etc. and are then formed symmetrically. However, it is also possible for example that the dimensions deviate from one another within a single projection or a recess, and thus the projections or the recesses deviate from a symmetry.
  • the insert has in each case five to ten, preferably eight, projections and recesses.
  • the preferred embodiment, each having 8 protrusions and recesses, i. an octagon insert will be described in more detail.
  • Eight projections provide an optimal embodiment with a maximum Einstellwinkel Superset from 55 ° to 85 ° and a cutting depth to 3 mm (see figure description).
  • the projections or the recesses may have rectilinear flanks which are arranged at an angle (B), a point angle (B) of 45 ° to 105 ° to each other.
  • the rectilinear, arranged at an angle to each flanks formed as cutting edges go into a tip over. Since the flanks of the projections include a point angle (B) of 45 ° to 105 °, the star-like shape of the insert results.
  • the arrangement according to the invention of the cutting edges (flanks) of the projections significantly increases the setting angle "A" in the direction of the machining movement towards the workpiece (see figures and associated description) In addition, this reduces the length of engagement of the cutting edge on the workpiece same working conditions reduces the passive force "Fp". This in turn has a positive influence on the friction that is reduced and the associated lower notch wear. Overall, the Use of an insert according to the invention reduces the load on the tool, the workpiece and the machine and increases the service life of the insert.
  • the flanks may have shapes that deviate from rectilinear flanks.
  • the flanks can be concave, convex or curve, for example, formed as a spline. Regardless of their shape, the flanks are always at an angle to each other, which includes a range of 45 ° to 105 ° as described above.
  • An insert according to the invention may be formed as an indexable insert, whereby the number of usable cutting is doubled. It then has cutting edges on its top and bottom. For example, should the cutting edges of the top be worn, the insert may be rotated 180 degrees to use the cutting edges of the bottom.
  • An insert may preferably be made of cubic boron nitride (CBN) or polycrystalline cubic boron nitride (PCBN) or a sintered ceramic such as alumina ceramic or silicon nitride ceramic or SiAlON ceramic. This is described, for example, in WO 2005/021 192 A1.
  • the insert like all inserts, has a top and a bottom. At the top or bottom, at least one trough can be arranged or these top or bottom are made smooth.
  • a smooth trained Oberg. Bottom has no depression or elevation.
  • a smooth surface is understood to mean a planar planar surface. If the upper side or the lower side has a depression, this has the advantage of better centering of the cutting plate during clamping and can prevent the cutting plate from flying out of its insert seat in the tool base body.
  • a first trough is arranged on the top and bottom, which has an annular recess with a bottom. This bulge passes over an annular surface from the bottom to the top or bottom.
  • the protrusion may include a protuberance having its tip above the bottom of the well and below the top or bottom.
  • This trough (described in WO 03/013770 A1) is used for positive fixing and tension of the cutting plate on the main body of the tool. Especially for drawing cuts, in which the cutting plate could be pulled out of its seat by the acting cutting forces, this cutting plate with the special trough offers itself.
  • the aforementioned annular surface can be designed as a cone, basket arch lowering or dome shape. It may also be a flat, arranged at an angle to the top or bottom ring surface.
  • a second clamping recess may be arranged coaxially with the first clamping recess, wherein the first clamping recess are arranged lower than the second clamping recess and both lower than the top or bottom.
  • the clamping element rests on the second clamping recess and, for example, engages with a nose in the first clamping recess.
  • the distance from the contact surface of the clamping element to the trough is thus always constant and is not dependent on laser, lapping or grinding of the cutting top surfaces.
  • the main body of the tool system has a recess which is delimited by a plate seat and contact surfaces.
  • the contact surfaces of the recess are shaped so that they form an undercut. These contact surfaces of the undercut engage in the spaces between two adjacent projections of a cutting plate and fix the cutting plate repeatable safe in the base body of the tool system. A flying out of the insert during operation is characterized prevented. A secure holding the cutting plate during operation is ensured by the contact surfaces of the undercut in the main body of the tool system.
  • the undercut is an additional securing means to a recess of an insert and is also particularly useful for a cutting insert with a smooth upper and lower side. The undercut of the recess ensures the repeatable positionally accurate holding the cutting plate regardless of whether it has a trough or a smooth top.
  • the recess may have further contact surfaces with which the positioning of a cutting plate can be ensured. These contact surfaces may be formed in the form of projections which engage in a recess of a cutting plate. The result is an additional positive connection in the form of tongue and groove between the recess and the cutting plate. Depending on the requirements, a tool system according to the invention can have a plurality of these positive connections.
  • the contact surfaces are preferably lugs which almost completely fill the interstices of two adjacent projections or teeth of a cutting insert. Adjacent is understood to mean adjacent to the circumference or peripheral surface.
  • the above-described recess is formed with the undercut in an adapter.
  • the adapter is fixed in a fixed position in a recess on the base body of the tool system. This allows a uniform recess in the main body of a tool system regardless of the outer shape, ie, the number of projections and recesses of a cutting plate. This creates a uniform interface between body and adapter.
  • various adapters whose outer shape is formed congruent to the recess in the base body, attached become.
  • the recess may have a shape which deviates from the recess which receives the cutting plate.
  • the recess in the adapter itself can then be provided with undercuts, which are formed congruent to the outer shape of the insert used.
  • an adapter for example, it is possible for an adapter to receive a star-shaped insert with, for example, four projections and another adapter for a star-shaped insert with, for example, eight projections in the same recess of a base.
  • Both adapters have an outer shape that is congruent with the shape of the recess in the main body of the tool.
  • the shape of the recess in the adapter in which the insert is received differs.
  • this shape of the recess on a cutting plate with four projections and recesses and in the other case, this shape of the recess is adapted to a cutting plate with eight projections and recesses.
  • An insert according to the invention has a longitudinal axis. This is transversely, preferably arranged at an angle of 90 degrees to the top or bottom of the cutting plate.
  • the cutting plate is pushed into the recess in the direction of its longitudinal axis, in other words it is inserted from "above.”
  • the cutting insert is pushed into the recess of the main body until it rests against the insert seat the recess are inserted.
  • the direction from the "front” would be perpendicular to the longitudinal axis of the cutting insert in the direction of the workpiece so that the protrusions of the main body can engage between the protrusions of the cutting insert, the cutting insert must be positioned over the protrusions to be engaged and then inserted fill the recesses of two adjacent projections of the insert almost completely.
  • the insertion direction of the insert is limited by the insert seat.
  • the insert seat may preferably be a surface of the main body. Then, the recess, wherein the insert seat is a part of this recess, bounded by contact surfaces of the body. To compensate for manufacturing tolerances, a support can be arranged in the recess.
  • This support then lies with its underside against the insert seat, its upper side forming the contact surface for a cutting insert according to the invention. If a base body has a support, then the direction of insertion of an insert is limited by the upper side of the support.
  • the depth of the recess in a base body of the tool system in which a support is arranged is generally greater by the height of the support than the depth of a recess in which no support is provided.
  • Main body Main body, an insert, a clamping element and a
  • Figure 2 shows a detail of the tool system according to Figure 1 without
  • Clamping element in a schematic representation, 3 shows an enlarged detail of Figure 2 in a schematic
  • FIG. 4 shows an inventive cutting plate according to the figures 1 to 3 with two wells in plan view in a schematic representation
  • Figure 5 the cutting plate according to Figures 4 with two wells in plan view of an upper side of the cutting insert fitted in a recess 4 of the main body of a tool system in a schematic Presentation
  • Figures 6a to 6d different embodiments of a cutting plate according to
  • FIG. 5 in a schematic representation
  • FIG. 7 shows the cutting plate according to FIG. 4 without troughs in a plan view of an upper side of the cutting insert fitted in a recess of the main body of a tool system in a schematic representation
  • Figure 8 the main body of a tool system according to the invention with a recess which is adapted to receive an adapter, wherein the adapter is a recess for receiving a cutting plate according to the invention is formed on, in part and in a schematic representation.
  • FIG. 1 shows the tool system according to the invention, or the front part of a base body 1 of the tool system facing the workpiece 7 (FIG. 4).
  • a clamping element 2 is fastened with a tensioning means 18.
  • the clamping element 2 presses with a projection in the form of a nose an inventive star indexable insert 3, hereinafter referred to as cutting plate 3, in a recess 4 in the base body first
  • the cutting plate 3 is arranged in the recess 4 of the base body 1 and rests on a plate seat 25.
  • the cutting plate 3 will be described in more detail below.
  • the cutting plate 3 has the outer shape of a star (character) or gear, wherein in the embodiment of Figure 1, the circumference or the peripheral surface 9 of uniformly distributed over the circumference identical projections 5 with two rectilinear flanks 6a , 6b is formed.
  • the flanks 6a, 6b go cutting edges forming in the top 10 ( Figure 3) via. See in particular the sections in Figures 2 to 4.
  • FIG. 2 shows a detail from FIG. 1 without a tensioning element 2.
  • the recess 4 with the plate seat 25 on the base body 1 can be clearly seen.
  • the recess 4 has projecting projections in the form of lugs 17, which serve as contact surfaces for the cutting plate 3. These lugs 17 engage in the recesses 16 of two adjacent projections 5 of the cutting plate 3 and thus prevent ejection of the cutting plate 3 in use.
  • the cutting plate 3 can not be pushed from “front” in the recess 4, but is used from “top” until it rests with its bottom on the insert seat 25. The sliding direction of "front” would be perpendicular to the longitudinal axis of the cutting plate 3.
  • the cutting plate 3 In order for the protrusions 17 of the base body 1 to be able to grip between the protrusions 5 of the cutting plate 3, the cutting plate 3 must be positioned over the protrusions 17 to be engaged and subsequently inserted Projections 17 can fill the recesses 16 of two adjacent projections 5 of the cutting plate 3 almost completely.
  • Figure 3 shows an enlarged detail of Figure 2.
  • the two cantilevered projections 17 on the recess 4 have at their ends an orifice and form a constriction in this area.
  • the cutting plate 3 is inserted into the recess from above and can not escape "forwardly" due to the narrowed orifice 3.
  • the cutting plate 3 shown in Figures 1 to 3 has a smooth upper surface 15, ie has no depression on the upper side or the surface Otherwise, the same reference numerals also show the same features.
  • Figure 4 shows the cutting plate 3 according to Figures 1 to 3 with two wells 1 1 a, 1 1 b in plan view of an upper side 15 of the cutting plate 3 in engagement with a workpiece 7.
  • the cutting plate 3 has the outer shape of a star, it is meant the character or the symbol, or a gear.
  • the distance between the tip 10 and the intersection point p of two cutting edges 6a and 6b of two adjacent projections 5 forms the length of a flank 6a, 6b.
  • the flanks 6a, 6b of the projections 5 form cutting edges forming in the top 10 of the projections 5 over.
  • the flanks 6a, 6b are formed as cutting edges at least in the region of the tip 10.
  • the cutting edges can be formed over the entire length of the flanks 6a, 6b. You can also extend from the top 10, only portions of the flanks 6a, 6b. These ranges may be from 100% to 50%, preferably 100% to 75% of the length of the flanks 6a, 6b.
  • eight teeth 5 are shown.
  • the dashed line 21 shows the outer contour of a standard octagonal cutting insert with a point angle B of 135 °.
  • the invention of the cutting plate 3 presented here is the much smaller point angle B, which reduces the total load on the tool, the workpiece and the machine and increases the service life of the insert 3 due to reduced friction and thus the notch wear is minimized.
  • the workpiece 7 is shown schematically in FIG.
  • the arrow 20 indicates the feed direction of the tool or the cutting plate 3.
  • the setting angle is marked A and the passive force in the machining process is Fp.
  • the cutting plate of Figure 4 shows, in contrast to the cutting plate according to Figures 1 to 3, a first trough 1 1 a on the top 15. If, as already mentioned, is spoken by a cutting plate, so always an indexable insert is meant, which also on its underside a trough 1 1 a may have.
  • the trough 1 1 a is circular and has a bottom 12 which merges via an annular surface 22 in a second recess 1 1 b.
  • the tip 14 is below the top 15 of the cutting plate 3 and preferably below the second trough 1 1 b.
  • the annular surface 22 may be designed conically as a basket arch depression or as Kalottenform or as a flat surface.
  • the annular surface 22 may be arranged at an angle to the top 15.
  • the clamping element 2 engages with adapted shaped nose positively in the first recess 1 1 a of the cutting plate 3 (not shown).
  • This trough 1 1 a is used for positive clamping on a base body 1 of a tool system. Especially for drawing sections, in which the cutting plate 3 could be pulled out of its seat by the acting cutting forces, this trough 1 1 a offers great advantages in terms of the fixation of the cutting plate. 3
  • a second depression 1 1 b is arranged coaxially with the first depression 1 1 a, the first depression 1 1 a being deeper than the second depression 1 1 a Trough 1 1 b and both lower than the top 15 are arranged ( Figure 4).
  • the clamping element 2 is located on the second trough 1 1 b and engages, for example with a nose in the first trough 1 1 a.
  • the distance from the support surface of the clamping element to the trough 1 1 a is thus always constant and is not dependent on lapping or grinding operations of the top 15 of the cutting edge.
  • the cutting plate 3 may be made of PCBN or of CBN or of a sintered ceramic such as alumina ceramic or silicon nitride ceramic or SiAlON ceramic.
  • the corresponding contour of the cutting plate 3 and also the troughs 1 1 a, 1 1 b can be produced for example by means of laser processing or via a corresponding shaping of the green body. The green body thus produced is then dried and sintered.
  • the cutting plate 3 may be provided with a coating.
  • FIG. 5 shows the cutting plate 3 according to FIG. 4 with two clamping recesses 11a, 11b in a plan view of an upper side 15 of the cutting plate 3.
  • the recess 4 in the main body 1 of the tool system can be seen.
  • the projections 17 in the form of lugs 17 engage in the recesses 16, in the interstices of the projections 5 of the cutting plate 3 a.
  • the arrow 23 indicates the direction of the withdrawal of the clamping element 2 and the cutting plate 3. See the preceding figures.
  • the withdrawal shown causes the flank pointing in the direction of the workpiece 7, in this case 6a, to rest against the facing contact surface 24 of the projection 17.
  • the depth of cut is designated, which is a maximum of 2.68 mm in this embodiment, which has a point angle of 75 °.
  • the setting angle A is 70 °.
  • Two flanks 6b, 6a of two adjacent projections 5a, 5b in this embodiment form an angle of 120 °.
  • FIGS. 6a to 6d show a cutting plate 3 according to the invention, in alternative embodiments.
  • the maximum possible cutting depths ap are dependent on the respective tip angle B.
  • the cutting plate 3 according to FIG. 6a has an insertion angle A of 85 °, with a point angle B of 45 ° and a maximum cutting depth ap of 3.08 mm.
  • Two flanks 6b, 6a of two adjacent projections 5a, 5b in this embodiment form an angle of 90 °.
  • the cutting plate 3 according to FIG. 6b has a setting angle A of 75 °, with a point angle B of 65 ° and a maximum cutting depth ap of 2.79 mm.
  • Two flanks 6b, 6a of two adjacent projections 5a, 5b in this embodiment form an angle of 110 °.
  • the cutting plate 3 according to FIG. 6c has a setting angle A of 65 °, with a point angle B of 85 ° and a maximum cutting depth ap of 2.58 mm.
  • Two flanks 6b, 6a of two adjacent projections 5a, 5b in this embodiment form an angle of 130 °.
  • the cutting plate 3 according to FIG. 6d has a setting angle A of 55 °, with a point angle B of 105 ° and a maximum cutting depth ap of 2.38 mm.
  • Two flanks 6b, 6a of two adjacent projections 5a, 5b in this embodiment form an angle of 150 °.
  • FIG. 7 shows another embodiment of a main body 1 of a tool system according to the invention.
  • the exemplary embodiment according to FIG. 7 has additional projections 27 in addition to the projections 17.
  • the shape of the recess 4 in one area, corresponds to the shape of the peripheral surface 9 of the cutting plate 3.
  • the projections 27 serve as additional positioning aids of a cutting plate 3 according to the invention.
  • Embodiments are also possible which do not have any except in the region of the recess 4 further projections 27 or only one further projection 27 or at least one or more projections 27 have.
  • the number of additional projections or positioning aids 27 is dependent on the requirements for the positioning of the cutting plate 3.
  • FIG. 8 shows a further embodiment of an inventive device
  • the recess 4 in the base body 1 is formed to a Adapters 26 record.
  • the adapter 26 may be attached to the base body 1 with known fastening means (not shown).
  • the outer shape of the adapter 26 is formed congruent to the shape of the recess 4.
  • the shape of the recess 4 may differ from the shape described above, because it does not take a cutting insert 3 according to the invention but an adapter 26.
  • the adapter 26 itself has a recess 4 ', which is designed to receive a cutting plate according to the invention.
  • the recess 4 also has projections 17 which form an undercut about an inserted cutting plate 3 transversely to its longitudinal axis in Hold position.
  • the contact surfaces 24 are operatively connected to the flanks 6a, 6b.
  • different adapters with different recesses 4 ' can be positioned.
  • the recesses 4 ' may be congruent with various forms of cutting plates 3, for example cutting plates 3 according to FIGS. 6a to 6d.
  • the various adapters 26 have identical outer shapes.
  • the invention relates to a tool system comprising a base body 1, a clamping element 2 and a cutting plate 3 for machining workpieces 7, wherein the base body 1 has a recess 4 with a plate seat 25 for receiving the cutting plate 3, the cutting plate 3 by the clamping element 2 in the recess 4 is mounted on the insert seat 25 and the cutting plate 3 at its periphery 9 Schneidkanten6, 6a, 6b has.
  • the invention proposes that the circumference (9) of the cutting plate (3) by at least two projections (5) and at least two recesses (16) is formed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

L'invention concerne un système d'outil comprenant un corps principal (1), un élément de fixation (2) et une plaquette de coupe (3) pour l'usinage de pièces (7) par enlèvement de copeaux, le corps principal (1) présentant un évidement (4) formant un logement (25) pour la plaquette de coupe (3), destiné à recevoir la plaquette de coupe (3), la plaquette de coupe (3) étant retenue dans le logement (25) par l'élément de fixation (2), et la plaquette de coupe (3) présentant des arêtes de coupe (6a, 6b) sur sa surface périphérique (9). Aux fins d'augmenter notablement l'angle de direction d'arête (A) par rapport à la pièce (7) dans la direction d'usinage/d'avance (20), de réduire la longueur de contact de l'arête de coupe (6a, 6b) sur la pièce, et de réduire la force passive (Fp) pendant le processus d'usinage, l'invention propose que la périphérie (9) de la plaquette de coupe (3) soit constituée par des saillies (5) et des renfoncements (16).
PCT/EP2018/057304 2017-03-24 2018-03-22 Plaquette de coupe réversible en étoile et système d'outil WO2018172462A1 (fr)

Applications Claiming Priority (2)

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DE102017205037.3 2017-03-24
DE102017205037 2017-03-24

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Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922766A (en) * 1972-08-15 1975-12-02 Paul Malinchak Inserts for metal cutters
GB2081142A (en) * 1980-08-04 1982-02-17 Wimet Ltd Profiling Insert and Holder
EP0075148A2 (fr) * 1981-09-19 1983-03-30 Fried. Krupp Gesellschaft mit beschränkter Haftung Dispositif d'usinage par enlèvement de copeaux de pièces
WO1998001249A1 (fr) * 1996-07-10 1998-01-15 Sandvik Ab (Publ) Pastille coupante indexable
US6190096B1 (en) * 1996-08-07 2001-02-20 Kennametal Inc. Indexable cutting insert with indexing marks
WO2003013770A1 (fr) 2001-07-26 2003-02-20 Ceramtec Ag Innovative Ceramic Engineering Outil de coupe par enlevement de copeaux et matrice de coupe de forme annulaire
WO2004024379A1 (fr) * 2002-08-28 2004-03-25 Ceramtec Ag Matrice de decoupage a deux cavites
WO2005021192A1 (fr) 2003-08-22 2005-03-10 Ceramtec Ag Innovative Ceramic Engineering Plaque coupante en pcbn ou en materiau composite a base de cbn comprenant un creux de serrage
RU2302320C1 (ru) * 2006-01-10 2007-07-10 Нина Алексеевна Корюкина Сборный режущий инструмент
DE102011007076A1 (de) * 2011-04-08 2012-10-11 Walter Ag Wendeschneidplatte und Wendeschneidplattenhalter
WO2013088433A1 (fr) * 2011-12-14 2013-06-20 Iscar Ltd. Plaquette de coupe indexable et outil de coupe associé
EP2823921A1 (fr) 2012-03-08 2015-01-14 Sumitomo Electric Hardmetal Corp. Outil de coupe
WO2017202679A1 (fr) * 2016-05-25 2017-11-30 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Plaquette de coupe et outil d'usinage par enlèvement de copeaux
WO2018011782A1 (fr) * 2016-07-11 2018-01-18 Iscar Ltd. Insert de coupe en forme d'étoile pour fraise rotative de chanfreinage avant et arrière

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922766A (en) * 1972-08-15 1975-12-02 Paul Malinchak Inserts for metal cutters
GB2081142A (en) * 1980-08-04 1982-02-17 Wimet Ltd Profiling Insert and Holder
EP0075148A2 (fr) * 1981-09-19 1983-03-30 Fried. Krupp Gesellschaft mit beschränkter Haftung Dispositif d'usinage par enlèvement de copeaux de pièces
WO1998001249A1 (fr) * 1996-07-10 1998-01-15 Sandvik Ab (Publ) Pastille coupante indexable
US6190096B1 (en) * 1996-08-07 2001-02-20 Kennametal Inc. Indexable cutting insert with indexing marks
WO2003013770A1 (fr) 2001-07-26 2003-02-20 Ceramtec Ag Innovative Ceramic Engineering Outil de coupe par enlevement de copeaux et matrice de coupe de forme annulaire
WO2004024379A1 (fr) * 2002-08-28 2004-03-25 Ceramtec Ag Matrice de decoupage a deux cavites
EP1536903A1 (fr) 2002-08-28 2005-06-08 Ceramtec AG Matrice de decoupage a deux cavites
WO2005021192A1 (fr) 2003-08-22 2005-03-10 Ceramtec Ag Innovative Ceramic Engineering Plaque coupante en pcbn ou en materiau composite a base de cbn comprenant un creux de serrage
RU2302320C1 (ru) * 2006-01-10 2007-07-10 Нина Алексеевна Корюкина Сборный режущий инструмент
DE102011007076A1 (de) * 2011-04-08 2012-10-11 Walter Ag Wendeschneidplatte und Wendeschneidplattenhalter
WO2013088433A1 (fr) * 2011-12-14 2013-06-20 Iscar Ltd. Plaquette de coupe indexable et outil de coupe associé
EP2823921A1 (fr) 2012-03-08 2015-01-14 Sumitomo Electric Hardmetal Corp. Outil de coupe
WO2017202679A1 (fr) * 2016-05-25 2017-11-30 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Plaquette de coupe et outil d'usinage par enlèvement de copeaux
WO2018011782A1 (fr) * 2016-07-11 2018-01-18 Iscar Ltd. Insert de coupe en forme d'étoile pour fraise rotative de chanfreinage avant et arrière

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