WO2015063236A1 - Outil d'usinage de surfaces de pièces par enlèvement de copeaux - Google Patents

Outil d'usinage de surfaces de pièces par enlèvement de copeaux Download PDF

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Publication number
WO2015063236A1
WO2015063236A1 PCT/EP2014/073397 EP2014073397W WO2015063236A1 WO 2015063236 A1 WO2015063236 A1 WO 2015063236A1 EP 2014073397 W EP2014073397 W EP 2014073397W WO 2015063236 A1 WO2015063236 A1 WO 2015063236A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
knife
indexing
coupling element
blade plate
Prior art date
Application number
PCT/EP2014/073397
Other languages
German (de)
English (en)
Inventor
Dieter Kress
Original Assignee
MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress 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 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG filed Critical MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG
Publication of WO2015063236A1 publication Critical patent/WO2015063236A1/fr

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Classifications

    • 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
    • B23B2200/0461—Round
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/16—Supporting or bottom surfaces
    • B23B2200/165—Supporting or bottom surfaces with one or more grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/36—Other features of cutting inserts not covered by B23B2200/04 - B23B2200/32
    • B23B2200/3627—Indexing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2205/00—Fixation of cutting inserts in holders
    • B23B2205/16—Shims

Definitions

  • the invention relates to a tool for machining workpieces according to the preamble of claim 1.
  • the invention also relates to a round blade plate having the features of claim 13.
  • Tools of the type discussed here ie those with a round blade plate, are used for machining of workpiece workpiece surfaces.
  • the cutting edge of the circular blade plate wears in a certain area. This depends on the depth of cut, the feed and the radius of the knife plate or its cutting edge. After a certain amount of wear, the blade plate is rotated by a certain angle of rotation and used in a new rotational position for machining the workpiece surface. By further rotation of the blade plate reaches an intact area of the cutting edge into engagement with the workpiece to be machined.
  • Knife plates of the type mentioned here have very wear-resistant and expensive cutting materials at high demands on the surface quality or service life of the tool, at least in the area of the cutting edge, for example PCBN (polycrystalline boron nitride) or PCD (polycrystalline diamond).
  • the blades can also consist entirely of these materials. Consequently, it is advantageous that, after wear of a region of the cutting edge, the round blade plate is only rotated so far that the wear regions of the cutting edge which arise during the machining of a workpiece are as direct as possible. connect to each other so that the entire circumference of the knife plate, ie the peripheral cutting edge, can be fully utilized.
  • projections or depressions are provided for positioning the cutting edge on the knife edge or on the opposite side, for example, a number of wells or star-shaped arranged notches.
  • a clamping device cooperating with the knife breast engages in these projections or depressions, or it is provided that projections or depressions interact with corresponding structures which are provided in the contact region of the knife plate.
  • a disadvantage of blades of this type is that the production of such complex contours is expensive and expensive.
  • the object of the invention is therefore to provide a tool which does not have these disadvantages.
  • a tool for machining of workpiece surfaces of the type mentioned above is proposed, which is characterized by an indexing unit.
  • This has a relative to the main body of the tool rotatable Coupling element with a contact area for the blade plate, wherein the coupling element and the blade plate are rotatably coupled together.
  • a rotatably connected to the coupling element indexing device is provided, which ensures that a blade plate by means of the indexing unit in each case only by a certain angle of rotation is rotatable.
  • the indexing unit has a drive device for stepwise rotation of the coupling element, so that an indexing of the blade plate is possible in a simple manner.
  • the indexing unit has a variable indexing device.
  • the indexer is either interchangeable, or has different sections, which are characterized in that the blade plate is indexable by different angles of rotation. Further embodiments emerge from the subclaims.
  • the object of the invention is also to provide a blade plate, which serves to avoid the disadvantages mentioned.
  • a round blade plate for a tool of the above type is created, which has a flat knife breast and a running at a distance to the rear, with a center axis of the blade plate is perpendicular to the knife breast and on the back.
  • the blade plate is characterized in that on its rear side a positive locking element is provided, which is designed and / or arranged so that it interacts with a counter-form-locking element on the tool such that a torque can be introduced into the blade plate.
  • the knife plate is also characterized by the fact that its knife breast has an intact clamping surface.
  • the intact clamping surface serves for the installation of a clamping element, for example, the installation of a clamping claw of a clamping device, as it is usually used for the attachment of knife plates.
  • the clamping claw acting on the knife edge on the one hand ensures that the interlocking element and the counter-form-locking element engage in one another and realize a positive connection, so that a rotationally fixed fixation of the knife plate is effected.
  • the clamping surface of the knife breast is intact, that is, the knife plate does not, as usual, on a through hole for a clamping screw, by means of which it is fixed to the tool.
  • FIG. 1 is a perspective view of a tool with a round blade plate
  • Figure 2 is an enlarged perspective view of the front part of the tool; 3 shows a schematic section through the front part of
  • Figure 4 shows the reproduced in Figure 3 section in an exploded view.
  • Figure 1 shows the tool in a perspective view obliquely from the front.
  • the design of the tool 1 is so far irrelevant to its implementation according to the invention insofar as it can be a turning tool, as shown in FIG. 1, but it can also be designed as a milling cutter, drill or the like. It is crucial that it has at least one insertable into the main body 3 of the tool 1 round blade plate 5.
  • the knife plate 5 is formed as a cylindrical body. But it is also possible to form the blade plate as a conical section-shaped body, or with a peripheral surface 7, which is concave retracted.
  • the tool 1 shown in FIG. 1 is a rotary holder which is provided here by way of example with a shaft having a square cross-section which can be clamped on a lathe.
  • the shaft can, as will be readily borrowed, also be designed differently.
  • the realization of contours is possible by means of the tool.
  • the knife plate 5 is fixed by a clamping device 1 1 on the base body 3 of the tool 1, wherein the clamping device 1 1 here has a clamping claw 13 which rests on a designated knife edge 17 top of the blade plate 5 and thus the blade plate 5 with its parallel to the knife breast 17 extending back 19 against a contact area 21 presses.
  • the clamping claw 13 may - as provided in the embodiment shown here - have a clamping lip 15; but this is not necessary.
  • the knife breast 17 has an intact clamping surface, in the region of which the clamping claw 13 rests.
  • the blade plate 5 thus has no through hole for a clamping screw, as is often the case with conventional blade plates, wherein the clamping screw serves to fix the blade plate on the main body of a tool.
  • the clamping claw 13 rests on a clamping surface, which currently has no through hole, also no clamping grooves, which are provided with conventional blade plates, so that there can engage a clamping lip and causes a positive locking a rotation of the blade plate.
  • the clamping surface is undamaged, ie flat, and forms no positive connection with the clamping claw on it.
  • FIG. 1 shows that the knife breast 17 -, in particular in the region of a clamping surface on which the clamping claw 13 or its clamping lip 15 rests - is designed to be flat, that is to say it has no elevations or recesses, as provided in conventional knife plates 5 and For example, cooperate with the clamping lip 15 in order to realize a defined rotational position of the blade plate 5 in the main body 3 of the tool 1.
  • the knife plate 5 can thus be tightened in any rotational position with respect to the clamping lip 15 on the base body 3.
  • the tool 1 has an indexing unit 25, which encompasses a coupling element 27 rotatable relative to the base body 3, whose top side facing the blade plate 5 comprises the contact area 21 on which the blade plate 5 rests.
  • the coupling element 27 is here exemplified as a cylindrical body or as a disc whose parallel to the top extending bottom 29 rests on a formed in the base body 3 contact surface 31 on which the central axis 33 of the blade plate 5 is vertical. This central axis 33 is also perpendicular to the contact region 21 of the coupling element 27 and on the knife edge 17 and the rear side 19 of the blade plate 5.
  • the outer diameter of the coupling element 27 is preferably smaller than that of the blade plate. 5
  • the coupling element 27 is rotatably mounted in the base body 3 of the tool.
  • a rotation of the coupling element 27 about the central axis 33 can be effected by a drive means 35 of the indexing unit 25, which here comprises a rotary knob 37, the peripheral surface 39 includes, for example, a knurl to increase the grip of the knob 37.
  • the drive device 35 of the indexing unit 25 is rotatably coupled to the coupling element 27, which in turn is non-rotatably coupled to the blade plate 5. In this way it is achieved that a torque introduced into the drive device 35 leads to a rotation of the coupling element 27 and thus the blade plate 5, when the blade plate 5 is not tightened.
  • the drive device 35 may also, in a departure from the embodiment shown here, be realized in that in the lower end of the indexing unit 25, a recess is formed, which is designed for the engagement of a tool. With this, a rotation of the coupling element 27 can be effected, as is possible by means of the rotary knob 37.
  • FIG. 1 also shows an indexing unit 25. This serves to allow a rotation of the coupling element 27 and thus of the blade plate 5 by a defined angle of rotation, ie an indexing of the blade plate 5 when a torque is introduced into the drive device 35.
  • the knife plate 5 is rotated about its central axis 33 by means of the indexing unit 25, as is the coupling element 27.
  • Figure 2 shows an enlarged perspective view of the front part of the tool 1 according to Figure 1, but from another Line of sight. While FIG. 1 shows the tool 1 obliquely from the front, FIG. 2 shows a view from which the tool according to the illustration in FIG. 1 is reproduced from the front right. In the enlarged view of the shaft 9 of the tool 1 is not shown in full length. The same parts are provided with the same reference numerals, so that reference is made to the description of Figure 1.
  • FIG. 2 also shows the drive unit 35 which is provided in the embodiment of the tool 1 shown here with the knob 37, by means of which the coupling element 27 can be rotated. Since the latter is non-rotatably coupled to the round blade plate 5, the round blade plate 5 is also rotated during a rotation of the rotary knob 37.
  • FIG. 3 shows a schematic section through the front part of the tool according to FIG. 2.
  • the same parts are provided with the same reference numbers, so that reference is made to the description of FIGS. 1 and 2.
  • FIG. 3 thus again shows the enlarged front part of the tool 1, the shaft 9 of which is not shown in full length. Clearly visible is the opening 41 with the bore 43 through the base body 3 of the tool 1 in the direction of the indexing unit 25 extends.
  • the clamping claw 13 presses the knife plate 5 against the contact region 21 of the coupling element 27 with tightened clamping screw, which is rotatably coupled to the blade plate 5.
  • the coupling element 27 is pressed against the contact surface 31 and held against rotation.
  • the indexing unit 25 is freely rotatable in the main body 3 of the tool 1, so that the mesher plate. 5
  • the drive means 35 with the knob 37, which is rotatably connected to the coupling element 27. It turns out here that the rotary knob 37 is rotatably coupled via an indexing shaft 45 with the coupling element 27 whose axis of rotation coincides with the central axis 33.
  • the indexing unit 25 also comprises an indexing device 47.
  • This is characterized by depressions 49 and / or elevations 51, which are introduced into a preferably cylindrical surface 53.
  • the indexing device 47 it is provided that in the surface 53 upwardly open grooves are realized with intermediate webs, wherein in this embodiment, the surface 53 has a larger diameter than the indexing 45.
  • gene 49 may also be formed as troughs or holes, so have a closed edge.
  • the knob 37 has a larger outer diameter, as the area with the cylindrical surface 53.
  • the cylindrical surface 53 and the surface of the indexing 45 each stages, but not are mandatory. It also turns out that the length of the indexing shaft 45 depends on the size of the tool. If necessary, it can be omitted for small tools, so that the indexing device 47 virtually merges into the coupling element 27.
  • a latching element 55 arranged in the bore 43 cooperates, which engages into the intermediate spaces between the elevations 51 and into the recesses 49.
  • the locking element 55 is designed so that it engages with a resilient force, which is preferably constructed by means of a spring, in the intermediate spaces between the elevations 51 and in the depressions 49.
  • the latching element 55 may have a sleeve-shaped main body 57 whose outer diameter is matched to the inner diameter of the bore 43 so that the latching element 55 can be guided and pressed to a desired position within the bore 53.
  • the main body 57 of the locking element 55 has an external thread, which cooperates with a not-shown internal thread in the bore 43.
  • the locking element 55 are introduced through the opening 41 in the base body 3 of the tool 1 and screwed into a desired depth in the bore 43.
  • a spring-loaded serving as a detent body ball 59 which engages in the space between the elevations 51 and 49 in the recesses, that is, the ball 59 is by a spring against the outer surface the indexer 47 pressed.
  • the ball 59 can be pushed back against its bias in the body 57, so that the indexing device 47 can be gradually rotated by a certain angle, that is indexed, the angle of rotation of the circumferential direction to the central axis 33rd measured distance of the recesses 49 and elevations 51 depends.
  • the knob 37 engages slightly into the base body 3 of the tool 1 and cooperates with a lower contact surface 52 so that the indexing unit 25 in the axial direction, that is seen in the direction of the central axis 33, with a slight play in the body 3 is fixed in position.
  • the contact surface 52 prevents an upward movement and the bearing surface 31, against which the underside 29 of the coupling element 27 bears, a downward movement of the indexing unit 25.
  • the indexing device can therefore also be part of the rotary knob 37 and thus of the drive device 35.
  • the blade plate 5 is pressed by means of the clamping claw 13 of the clamping device 1 1 against the coupling element 27, so that the coupling element 27 rests firmly against the contact surface 31 in the base body 3 of the tool 1, such that a rotation of the coupling element 27th is not possible due to the existing frictional forces between this and the base body 3.
  • the rotatably coupled to the coupling element 27 blade plate 5 is fixed in the main body 3 of the tool 1 so that an unwanted rotation of the blade plate 5 is not possible.
  • the indexing device 47 By the action of the indexing device 47 it is ensured that upon a rotation of the rotary knob 37, the locking element 55 only permits a stepwise rotation or indexing. For an operator, it is thus possible in a simple manner, to rotate the blade plate 5 by a defined angle of rotation.
  • the angle of rotation can be chosen so that a rotation of the blade plate by a plurality of locking steps is necessary, that is done by a plurality of partial rotation angle, which are given by the interaction of the locking element 55 with the indexing device 47.
  • the clamping device 1 1 is activated again so that the clamping claw 13 presses firmly on the knife face 17 and thus exerts a contact pressure on the coupling element 27, which then is pressed against the contact surface 31 in order to fix the blade plate 5 and the indexing unit 25 in a rotationally fixed manner in the base body 3 of the tool 1.
  • a clamping screw 65 is introduced into the provided with an internal thread through hole 23 of the clamping device 1 1, which with an internal thread in the through hole 23 and with an internal thread in a two- th through hole 67 in the main body 3 cooperates.
  • the tensioning screw 65 preferably has two threaded sections equipped with opposing threads. On the tension of the clamping device 1 1 and the fixation of the blade plate 5 in the base body 3 of the tool 1 is not discussed here, because this is a known to a person skilled in the art. Of course, it is possible to design the clamping device 1 1 with other clamping means.
  • the knife breast 17 of the blade plate 5 is formed flat, in particular in the area of the intact clamping surface, that is, has no recesses provided for the engagement of the clamping lip and / or elevations, as is the case with conventional blade plates. If, therefore, the clamping force of the clamping claw 3 on the knife breast 17 is only slightly reduced, it is possible to rotate the knife plate 5 by means of the coupling element 27 of the indexing device 47 mounted rotatably in the main body by a certain angle.
  • FIG. 4 shows the reproduced in Figure 3 tool, but in an exploded view. The same parts are provided with the same reference numerals, so reference is made to the description of the preceding figures.
  • the knife plate 5 is tightened by means of the clamping device 1 1 in the main body 3 of the tool 1 characterized in that the clamping screw 65 is screwed through the through hole 23 until it engages in the through hole 67.
  • the clamping lip 15 of the clamping claw 13 By the clamping lip 15 of the clamping claw 13, the blade plate 5 is pressed against the coupling element 27 of the indexing unit 25, against the contact region 21 of the coupling element 27.
  • a positive connection provided such that a relative rotation between the blade plate 5 and coupling element 27 is excluded at least in the pressed state.
  • the positive connection between the rear side 19 of the blade plate 5 and the abutment portion 21 of the rotatable coupling element 27 is realized in that on the back 19, a positive locking element is provided which cooperates with a counter-form-locking element in the contact region 21 of the coupling element 27, in such a way that over Indexing 25 a torque in the blade plate 5 can be introduced.
  • the blade plate is rotatable at a wear of the cutting edge.
  • the interlocking element is formed and / or arranged so that a force acting at a distance from the central axis 33 force, which is preferably directed perpendicular to an imaginary central axis 33 intersecting diameter line, causes a rotation of the blade plate 5.
  • the form-fitting element and the Gegennnn gleichelennent are complementary and engage.
  • the positive-locking element is designed as a recess and the counter-form-locking element is designed as a projection. This is because it is cheaper, especially in very hard materials used in connection with a knife plate, there to provide a recess or depression. It is much more complex and costly to build a head start. In principle, however, it is also very possible to realize the form-fit element as a projection and the counter-form element as a recess.
  • At least one projection preferably formed as a substantially cylindrical pin 69, originates from the abutment region 21 of the coupling element 27, to which a further pin is preferably assigned diametrically opposite one another. This is not visible in the representation selected here.
  • the pin 69 engages in the back 19 of the blade plate 5, where a corresponding recess or recess for the pin 69 is provided.
  • the recess is designed and arranged such that a positive connection between the knife plate 5 and the coupling element 27 is effected in such a way that a relative rotation between the two parts is not possible.
  • the pin 69 and the associated recess are offset, that is arranged at a radial distance from the central axis 33.
  • the non-rotatable coupling between the blade plate 5 and coupling element 27 can be done in any way.
  • the at least one pin 69 is listed here by way of example only. In principle, it can also originate from the rear side 19 of the knife plate 5. However, it is rather expensive and cheaper to provide the knife plate 5 on its rear side 19 with a recess for the pin 69 that springs from the contact surface 21.
  • a recess may also serve a groove in the back 19 of the blade plate 5, which preferably extends in the radial direction to the central axis 33. The side walls of the groove then serve as a stop for the pin 69 engaging in the groove in order to prevent a relative rotation of the knife plate 5 about the central axis 33 with respect to the coupling element 27.
  • the coupling element 27 is connected to the remainder of the indexing unit 25 by means of a screw 71, which engages in the indexing shaft 45.
  • the connection between coupling element 27 and Indexierwelle 45 ensures that no relative rotation is possible here. Any other attachment of the coupling element 27 to the indexing shaft 45 is also possible, whether by gluing, soldering, welding or the like.
  • the indexing shaft 45 is formed integrally with the indexing device 47 and the drive region 35.
  • An essential aspect is that the cutting edge 64 of the blade plate 5 is subject to wear during the machining of a workpiece over a certain circumferential area, wherein the Size of the peripheral region is dependent on the depth of cut, the feed and the radius of the cutting edge 64 of the blade plate 5. Also other parameters, such as the cutting speed, the material of the blade plate and the workpiece to be machined can also play a role here.
  • the knife plate 5 is preferably further rotated or indexed as accurately as possible by a certain angle of rotation, if necessary by a number of partial angles of rotation, so that an intact, undamaged region of the cutting edge 64 follows the turning of the blade plate 5 engages with the workpiece to be machined.
  • the intact cutting region directly adjoins the worn cutting region.
  • An overlapping of the cutting regions in the sense that an already worn region of the cutting edge comes into engagement with the workpiece after the turning of the knife plate is preferably completely avoided. If, as a precautionary measure, the knife plate is turned further so that there is a space between an already worn area of the cutting edge and the cutting area which is subject to wear in the subsequent machining process, the cutting edge is not optimally utilized.
  • the indexing device 47 is designed to be interchangeable and variable: it is thus possible to remove an indexing device 47 from a tool 1 and to feed it through another indexing device in which the depressions and / or elevations tions are arranged at a different circumferential distance from each other.
  • the knob 57 thus result depending on the indexing device 47 different sized rotation angle at each set by the locking element 55 rotation step. This makes it possible to adapt the rotation of a blade plate to various processing parameters and to use identically designed blade plates 5 under different processing conditions.
  • a largely optimized possibility is to use an indexing device 47, the recesses 49 and elevations 51 in a relatively narrow circumferential distance from each other, so that at each latching step, the blade plate is further rotated by a small angle of rotation.
  • an operator can count the latching steps and set an optimum defined angular range by which the knife plate 5 is rotated step by step in the event of wear. If the distance between the recesses and elevations is relatively small, the blade plate 5 only rotates by a small angle of rotation during each latching step. If the distance between the depressions and elevations is relatively large, a twisting of the blade plate results per latching step by a larger angle of rotation.
  • the indexing device 47 is designed so that the circumferential distance of the recesses and / or elevations is selected so that per locking step, a rotation angle of 5 ° to 20 ° is realized.
  • a grid of 10 ° or 15 ° is preferred in order to realize different angular positions per latching step during the rotation of a knife plate. It is crucial that the blade plate 25 can always be formed the same due to the use of the indexing unit described here, which significantly reduces the cost of the blade plate and thus a tool of the type discussed here.
  • the rotational angle or partial rotational angle given by the configuration of the indexing unit 25 or the indexing device 47 results from the spacing of the depressions and elevations, measured in the direction of rotation, indicating the angle of rotation or the partial rotation angle.
  • the knob 57 may project so far into the main body 3 of the tool that it has on its peripheral surface 39 recesses and elevations at a relatively large distance (measured in the circumferential direction).
  • a further area above the rotary knob 37 can, as shown in FIGS. 3 and 4, be provided with an indexing device 47 in which the spacing of the recesses and elevations deviates from those provided on the peripheral surface 39 of the rotary knob 37.
  • a section may be provided which has depressions and elevations, which in turn have a different distance from each other, measured in the circumferential direction.
  • the indexing unit 25 Since the base body 3 of the tool 1 could be weakened too much by a plurality of bores 43 for a latching body 55, it is preferable to design the indexing unit 25 so that the indexing device 47 is interchangeable and with different rasters with respect to the spacing of recesses and elevations measured in the direction of contact can be trained. Depending on the wear of the blade plate in certain cases, then various indexing 47 can be used, with always the same configuration of the blade plate is used.
  • the tool according to the invention and the inventively designed knife plate act together so that a rotation of the blade plate 5 with a wear of a portion of the cutting edge 64 relative to the main body 3 of the tool 1 is already possible when the clamping claw 13 of the clamping device 1 1 is only slightly relieved , A rotation of the clamping screw 65 in the release direction by a quarter to a half turn is sufficient, because the clamping claw 13 rests on an intact clamping surface of the Mes masters breast 17, and here no positive locking is realized.
  • the blade plate 5 is pressed only with reduced force against the associated coupling element 27 and against the contact area 21, so that the Coupling element 27 is pressed only with reduced force against the contact surface 31 in the main body 3 of the tool 1.
  • the indexing unit 25 it is possible, by means of the indexing unit 25 to rotate identical blades 5 by different angles of rotation, wherein the angle of rotation can be chosen differently by the design of the indexing device 47.
  • the indexing unit 25 as a whole is exchangeable, or has a replaceable indexing device 47, so that at different intervals - in the circumferential direction seen - arranged elevations and depressions cooperate with a latching element to adjust different angles of rotation in one and the same type of blade plate in different wear situations can.

Abstract

L'invention concerne un outil d'usinage de pièces par enlèvement de copeaux, comportant un corps de base, au moins une plaquette de coupe ronde (5) présentant au moins un tranchant (64) géométriquement défini ainsi qu'un front de coupe (17), un dispositif de serrage (11) fixant la plaquette de coupe (5) sur le corps de base (3), le dispositif de serrage (11) présentant une griffe de serrage (13) agissant sur le front de coupe (17) et la force de la griffe de serrage (13) étant dirigée de telle manière que la plaquette de coupe (5) est comprimée par sa face arrière (19) opposée au front de coupe (17) contre une zone d'appui (21) de l'outil (1). L'outil (1) est caractérisé en ce qu'il présente une unité d'indexage (25) comprenant un élément d'accouplement (27) à la zone d'appui (21) pour la plaquette de coupe, rotatif par rapport au corps de base (3), accouplé solidaire en rotation à la plaquette de coupe (5), un dispositif d'indexage (47) relié solidaire en rotation à l'élément d'accouplement (27), et un dispositif d'entraînement (35) pour l'indexage de l'élément d'accouplement (27) à un angle de rotation défini.
PCT/EP2014/073397 2013-10-31 2014-10-30 Outil d'usinage de surfaces de pièces par enlèvement de copeaux WO2015063236A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310222206 DE102013222206A1 (de) 2013-10-31 2013-10-31 Werkzeug zur spanenden Bearbeitung von Werkstückoberflächen
DE102013222206.8 2013-10-31

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WO2015063236A1 true WO2015063236A1 (fr) 2015-05-07

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DE (1) DE102013222206A1 (fr)
WO (1) WO2015063236A1 (fr)

Cited By (1)

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CN108436120A (zh) * 2018-06-14 2018-08-24 中原内配集团安徽有限责任公司 一种缸套镗孔刀具

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Publication number Priority date Publication date Assignee Title
DE102013226734B4 (de) * 2013-12-19 2019-08-08 Hoffmann GmbH Qualitätswerkzeuge Spanabhebendes Werkzeug

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WO1995026846A1 (fr) * 1994-03-31 1995-10-12 Kennametal Inc. Ensemble outil de coupe et outil rapporte
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