WO2015114449A1 - Élément de tête d'outil pour la fabrication d'une tête d'outil, tête d'outil et moyen de réception d'outil ainsi que procédé de fabrication d'un élément de tête d'outil et d'une tête d'outil - Google Patents

Élément de tête d'outil pour la fabrication d'une tête d'outil, tête d'outil et moyen de réception d'outil ainsi que procédé de fabrication d'un élément de tête d'outil et d'une tête d'outil Download PDF

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Publication number
WO2015114449A1
WO2015114449A1 PCT/IB2015/000110 IB2015000110W WO2015114449A1 WO 2015114449 A1 WO2015114449 A1 WO 2015114449A1 IB 2015000110 W IB2015000110 W IB 2015000110W WO 2015114449 A1 WO2015114449 A1 WO 2015114449A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool head
tool
receiving means
torque
region
Prior art date
Application number
PCT/IB2015/000110
Other languages
German (de)
English (en)
Inventor
Frank Johne
Original Assignee
Johne & Co. Präzisionswerkzeuge 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 Johne & Co. Präzisionswerkzeuge GmbH filed Critical Johne & Co. Präzisionswerkzeuge GmbH
Priority to EP15708266.0A priority Critical patent/EP3102355A1/fr
Publication of WO2015114449A1 publication Critical patent/WO2015114449A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/11—Retention by threaded connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/06—Features relating to the removal of tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/02—Connections between the shanks and detachable cutting heads

Definitions

  • the invention relates to a tool head element for manufacturing a tool head comprising at least one cutting edge and can be arranged in a tool receptacle according to the preamble of claims 1, 2, 6, 7 and 12.
  • the tool head element may be formed in the manner of a blank and comprises at least one tool head section.
  • the tool head section should be provided so that at least one cutting edge can be arranged there.
  • It also comprises at least one attachment section adjoining the tool head section and one, in particular tapered, tapering.
  • the attachment section is intended to serve for fastening the tool head element further processed to a tool head.
  • the fastening can take place in the tool receiving means, which can be formed as a coupling and comprise or can be formed by a receiving shaft.
  • the invention relates to a tool head for rubbing, countersinking, drilling, in particular boring, and / or milling according to the preamble of claim 13 and 14 and a tool receiving means for receiving a tool head according to the respective preamble of claim 7, 19, 20 and 21.
  • Der Tool head can be arranged in a receiving opening of the tool receiving means.
  • the tool receiving means comprises a receiving shaft extending along an axis of symmetry, in which end a receiving opening, in particular for receiving a fastening section assigned to the tool head, is arranged.
  • the tool receiving means may comprise a tool coupling or be formed as a coupling.
  • the tool receiving means can be arranged on a drive of a tool.
  • the invention further relates to a tool according to the preamble of claim 22.
  • the tool comprises a tool receiving means described here, in which a, in particular here described, tool head is arranged.
  • the invention relates to a method for producing a tool head element for a tool for reaming, countersinking, drilling, in particular boring and / or milling, according to claim 23 and a method for producing a tool head, for a tool for rubbing, countersinking , Drilling, in particular boring, and / or milling, with a tool head section and at least one fastening section adjoining the tool head section according to the preamble of claim 28.
  • Machine tools are regularly produced in several process steps. It can be provided that a metal body is machined so that, for example, a reamer or a drill is created.
  • a machine reamer is described, for example, in EP 1 899 101 B1.
  • the devices with which tool manufacturing processes for producing a reamer described there can be carried out require a mechanical device. If now instead of a grater another tool, such as a drill or a milling cutter to be manufactured, the device must either be converted, or it must be provided a completely new manufacturing device. This makes the production of small quantities, as is sufficient in particular for special tools, not very attractive for a tool manufacturer.
  • the object of the invention is that the, in particular apparatus or cost, manufacturing costs for the production of tools is reduced. At the same time conditions are to be created to produce the highest quality tools that can be replaced with little effort in machine tools.
  • the tool head section of the tool head element comprises at least one machining area that can be machined such that the tool head element forms a tool head for a friction tool or a countersinking tool or a drilling tool.
  • the tool head element according to the invention forms a universal blank for the production of different tool heads, in particular for cutting tools.
  • a tool for drilling can be provided, ie a tool that drills existing holes to a hole of certain dimensions and tolerances. As far as a drilling is described below, this always means a boring.
  • the tool head element according to the invention can be manufactured in large numbers.
  • a reaming tool or a countersinking tool or a drilling tool can be manufactured from the tool head element according to the invention.
  • the described tool head element can be made of a hard metal, such as by pressing (and sintering) a metal powder.
  • the final production of a tool head takes place by means of a few (re) machining steps of the described tool head element. management.
  • An attractive material specialization is made possible in which the tool head formed from the tool head element can be formed from a material that meets the requirements for cutting edge resistance, heat resistance and / or hardness. All the more so as to other tool components, such as a tool receiving means (see below), other requirement are directed, such as in terms of flexibility of the tool receiving means.
  • a reduction of, in particular apparatus or cost, manufacturing costs for the production of tools is also given by a tool head element according to claim 2.
  • the tool head portion includes at least one processing area which is editable so that the tool head element forms a tool head for a milling tool.
  • the tool head element according to the invention according to claim 2 can also be manufactured in large quantities, creating the conditions for a production of cheaper and high-quality, replaceable tool heads for milling tools.
  • a further reduction of, in particular apparatus or cost, manufacturing costs for the production of tools also results from the fact that from the above tool head element, a reaming tool or a countersinking tool or a drilling tool or a milling tool can be made.
  • the manufacturer can therefore manufacture the tool head element according to the invention in large numbers and, depending on requirements or customer requirements, manufacture a high-quality tool head which can be used in a reaming tool or a countersinking tool or a drilling tool or a milling tool.
  • the tool head element expediently comprises at least one axis of symmetry which runs through the tool head section and / or through the fastening section or partial regions of the sections. It may, in particular for clamping, fastening or cooling purposes, at least one, in particular along the axis of symmetry extending through hole may be provided, in particular for passing a fastener and / or a coolant.
  • the passage opening may have at least one chamfer, in particular in the region of the tool head section, at the end, in particular at a recess.
  • the chamfer preferably forms the transition between the recess and the end face. te of the tool head section.
  • the recess may be adapted to receive a screw head.
  • the chamfer may have an angle in an angular range between about 6 ° and about 10 ° to the plane to which the axis of symmetry is perpendicular.
  • the chamfer may according to a particularly preferred embodiment of the tool head element according to the invention have an angle of about 8 ° to this plane.
  • the bevel causes an improved cutting behavior of a tool head formed from the tool head element, in particular a milling head formed from the tool head.
  • the chamfer is therefore expedient.
  • the tool head element comprises at least one Entformungsschräge, which preferably has an angle in an angular range of about 0.25 ° to about 3.5 °.
  • the Entformungsschräge can be arranged in particular on the tool head portion and / or on the mounting portion, and / or on the through hole and / or torque-supporting means.
  • An angle of draft of about 0.5 ° may be particularly preferred. If the described tool head element can be produced by pressing a material (metal powder), the draft angle ensures that the described tool head element can be removed more easily from a production device, such as a mold.
  • the mounting portion has a taper angle, which comes from a taper angle range of more than about 2 ° to less than about 10 ° (2 ° ⁇ angle ⁇ 10 °). It can also be provided an angular range of about 6 ° to about 10 °. According to a preferred embodiment, the taper angle may be about 8 ° or about 4 °.
  • the angle of taper can be about 4 °, if a tool head with a nominal diameter of the tool head portion of about 10 mm to about 12 mm or more than 12 mm is provided, the taper angle can be about 8 °.
  • the taper angle extends over the entire mounting portion and resembles the full opening angle of the cone. Based on the axis of symmetry, the half taper angle is about 1 ° to about 5 °, optionally about 3 ° to about 5 °, preferably about 4 ° or 2 °, depending on the nominal diameter of the tool head portion (see above).
  • the Malawikkeiement Due to the tapered angle formed by the inclined surface or by the taper angle formed cone or cone, the Malawikopfeiement can be easily removed from a mold, whereby the manufacturing cost is reduced. A draft angle in the area of the taper angle is therefore not absolutely necessary.
  • the Malawikopfeiement can be further processed by the tapered attachment portion to a high-quality tool head, which is centered and securely fastened in a suitable tool head receptacle.
  • a taper in the specified angular range causes the tool head formed from the tool head element to have a fixed and positionally accurate (relative to the axial position) seat in a suitable tool receiving means. If necessary, for example during tool wear, it can be removed from the tool holder.
  • the angle range of the taper affects the properties of the tool head in terms of fit and solubility. Small taper angles mean better transmission of moments, larger taper angles mean more accurate positioning and better solvability.
  • a reduction of, in particular apparatus or cost, manufacturing effort for the production of tools is also given by a horrineiement according to claim 7. Accordingly, a, in particular in a transition region between the tool head portion and the mounting portion arranged, torque-supporting means is provided.
  • the torque supporting means u. A. achieves that a torque from a machine tool via a tool receiving means on a tool head about for rubbing, (on) drilling, milling or sinking is at least partially transferable, wherein the tool head is made of the MalawiKKeiement described.
  • the torque transmission takes place via the fastening portion and / or torque-supporting means.
  • the torque-supporting means comprises at least one shoulder with at least one, in particular inclined, end face and / or a form element which is suitable for being able to be arranged in a recess of the tool receiving means corresponding to the shape of the form element Torque can be transferred from the tool receiving means to the tool head element via the torque-supporting means, and that the tool head element can preferably be arranged in the tool receiving means in a manner secure against rotation and / or position.
  • Non-rotating in this context means that there is at least one excellent (angular) position of the tool head in which a torque is stably transferable, and in a position deviating from the at least one excellent (radial) position, torque supporting means and recess of the tool grip Tool holder means not or only partially, so that a torque transmission is not or hardly done. The user notices this already when setting up the tool and corrects the fit of the tool head, so that then a reliable torque transmission can take place.
  • a (single) positionally accurate recording of the tool head formed from the tool head element in a tool receiving means also has the advantage that any coolant channels in the tool head (element) and those in the tool receiving means are accurately coupled to each other.
  • the coolant can be guided via the tool receiving means to the tool head, a blocking of a channel or a closure of the channel by incorrect positioning of the tool head in the tool receiving means is avoided. This not only improves the handling of the tool head formed from the tool head element, it also handling errors are avoided, which extends the life.
  • the torque-supporting means may comprise at least one shaped portion comprising at least one curvature and / or radius, preferably two curvatures and / or two radii.
  • the torque-supporting means may be formed as a cam or a "nose.”
  • the cam (nose) may protrude from the mounting portion, from the transition region between mounting portion or from the tool head portion
  • the torque-assisting means may also be formed as an asymmetric driver For example, an asymmetric hexagon may be provided ensuring accurate positioning. It can also be provided two or more torque-supporting means, each having different characteristics in terms of shape, size, etc.
  • the torque-supporting means may also be formed as a recess into which a corresponding form element of the tool receiving means engages.
  • the torque-supporting means may comprise at least two, in particular shaped, portions, which are aligned relative to a point to an axis or to a plane, in particular relative to a center, to an axis of symmetry or to a plane of symmetry to each other.
  • the torque-supporting means may be formed of a constructed oval, or optionally trapezoidal or rectangular.
  • a recess for arranging a fastener is arranged in the tool head portion, wherein the recess comprises at least one coolant channel ,
  • the coolant channel is suitable for directing coolant, for example a fluid or a fluid, into the region or into the vicinity of the cutting edge of a tool head formed from the tool head element.
  • the (coolant) Kana! is produced in the tool head element, in particular when pressing the material from which the tool head element is formed, a complex reworking of the tool head element and / or the tool head to create a (coolant) channel is not required.
  • the (coolant) channel is thus already formed when pressing the blank or the tool head element.
  • a reduction of, in particular apparatus or cost, manufacturing costs for the production of tools also results from a tool head for rubbing, countersinking, drilling and / or milling according to claim 13.
  • the tool head is formed from a prescribed tool head element, manufactured or it comprises a pre-described Tool head element, in particular it comprises individual, several or all features of the tool head element described here.
  • the tool head can have a taper in the region of the fastening section.
  • the tool head may be formed such that the end face of the fastening section in a corresponding receiving opening of a tool receiving element has no contact with the tool receiving means, in particular with the boundary of the receiving opening. If the taper has a cone with an angle from an angle range of about 3 ° to about 10 ° results in the corresponding receiving opening a tight fit and a good centering.
  • At least one cutting edge is provided in the processing area of the tool head element.
  • 6, 7 or 8 cutting edges can be provided. With 8 cutting edges, there can be a reduction of the machine time while at the same time increasing the service life.
  • the tool head comprises a recess for the arrangement of a fastening element, wherein the recess comprises at least one coolant channel.
  • the coolant channel may be arranged in the lower region and / or in the lateral region of the recess, wherein the lateral region extends substantially parallel to the axis of symmetry of the tool head and the lower region substantially perpendicular to the axis of symmetry.
  • the channel can be formed in several parts, d. H. it may include multiple channel sections or multiple micro-channels.
  • the channel can adjoin the passage opening of the tool head, as a result of which the coolant can be guided along the passage opening into the channels.
  • a reduction of, in particular apparatus or cost, manufacturing costs for the production of tools also results from a tool head for rubbing, countersinking, drilling and / or milling according to claim 14. Accordingly, a release means may be provided, whereby the tool head can be released from the receiving opening .
  • a fastening element formed as a screw can be arranged so that a force for fastening the tool head to the tool head can be transmitted by the screw head in a recess of the passage opening when tightening the screw.
  • the cone of the mounting portion of the tool head is pressed into a correspondingly shaped receiving opening, whereby - possibly together with the action of a torque-supporting means - a tight fit is achieved.
  • the screw is released, whereby the screw moves out of the thread in the tool receiving means for a limited axially extending distance.
  • the removal means comprises a screw attached to the ring (or a corresponding plate), it is possible that by the ring when loosening the screw, in particular in the region of the front side of the mounting portion of the tool head, a force on the tool head is transferable, the opposite the direction of the force is directed to the fastening.
  • the leaching means may also comprise or be formed from a nut. May be a mother with M2.5 size greater than M2.5, or a mother M12 or smaller than M12. For example, an M3, M6 or M10 nut may be provided.
  • the ring (or the plate / nut) is permanently and stably fixed (in terms of mechanical load) to the screw and thus causes, when loosening the screw, the ring (from below) presses against the tool head, whereby the tool head from the Seat in the tool receiving means is pushed out or levered out.
  • the tool head, fastener (screw) and release means (ring) form a total interchangeable tool head assembly, ie when a tool head exchange screw and ring are also exchanged, since the tool head, the deashing agent, d, h. the screw with the ring attached thereto.
  • At least one channel is arranged in the region of the removal means, in particular in the case of a fixed seat of the tool head in the tool receiving means, preferably between the channel Ring and the end face of the mounting portion is arranged.
  • the ring - with a firm fit of the tool head in the tool receiving means - be surrounded by the channel.
  • An extension of the channel extending in the axial direction and in the direction of the tool head section can be created by forming an annular gap or annular space between the screw and the through opening.
  • the screw has no thread in the region of the annular space. It may therefore be provided that the thread of the screw is partially removed respectively turned off. This preserves the core size and thus the load capacity of the screw.
  • the channel may be formed by the passage opening having a larger diameter than the screw.
  • the tool receiving means serves to receive a tool head, in particular a tool head described above.
  • the tool receiving means comprises a receiving shaft extending along an axis of symmetry, in the end of which a receiving opening, in particular for receiving a fastening section assigned to the tool head, is arranged. In the region of the receiving opening, at least one removal means for releasing a tool head arranged in the receiving opening is provided. In this way, the tool head of the tool is simple, d. H. inexpensive and without much equipment and without a user applied force, possible. The tool and the tool head are thus higher quality.
  • an easily exchangeable tool head is of a higher quality than a tool head which can hardly be removed from the tool receiving means. Any damage to the tool receiving means when detaching the tool head are also avoided.
  • the extraction means may preferably comprise a bore which is perpendicular or nearly perpendicular to the axis of symmetry.
  • an effect element can be used, through which the tool head, in particular in the region of the attachment portion, with a tool head from the receiving opening Thereforelösenden effect is bar.
  • the effect element it may be a linkage or a lever tool, which can be inserted into the bore of the leaching means.
  • the effect element is movable within the bore. It can be brought into mechanical contact with the tool head which is inserted in the tool receiving means. By actuating the action element of the tool head is removed from the tool receiving means, wherein a movement of the action element is transferable to the tool head.
  • a tool receiving means Requirements for high-quality tools that can be exchanged with little effort in machine tools, are also created by a tool receiving means according to claim 19.
  • the receiving opening is such that a narrow gap or a small distance remains between the male tool head and the end face of the tool receiving means. Through the gap or by the distance, a contact of the preferably planar surface end face of the tool receiving means is avoided with a front side facing surface of the tool head. Forces / moments are thus transferable in the region of the receiving opening (cone, taper) and / or in the region of the torque-transmitting means (cam, shoulder, molding element).
  • a tool receiving means In the region of the receiving opening a recess is arranged with a recess shape, wherein the recess is adapted to receive a torque-supporting means of the tool head.
  • the torque-supporting means has a corresponding to the recess shape respectively complementary shape.
  • the recess may also be provided a form element that engages in a recess formed as a torque supporting means of the tool head.
  • the tool receiving means preferably comprises a receiving opening with a receiving shape which is corresponding to the shape of the fixing portion of a tool head arranged in the tool receiving means or complementary.
  • the shapes of the receiving opening and the fastening portion are in particular corresponding or complementary, respectively, if the positioning of the fastening portion in the receiving opening takes place in a form-fitting manner at least in sections.
  • the receiving opening may comprise a cone or a conically shaped portion, wherein the geometric properties of the cone correspond to those of the mounting portion of the tool head or almost correspond.
  • the tool receiving means comprises a fastening element for fastening a (in particular already described) work convincing head.
  • the fastening element comprises at least a portion of a thread, wherein the thread of the fastening element engages in a arranged in the receiving opening mating thread.
  • a channel is arranged through which coolant can be guided to the tool head. The channel preferably runs along the thread.
  • the channel can be formed approximately by the fact that the flanks of the thread of the fastener against the flanks of the counter-thread in the receiving opening are made shortened.
  • the shortening of the flanks of the thread can be done by a grinding process.
  • the channel may extend over the entire fastener or over a portion of the fastener. In particular, the channel can extend over that region of the fastening element in which the thread of the fastening means is arranged.
  • the tool comprises a tool receiving means described here, in which a tool head is arranged. Between the end face of the tool receiving means and arranged in the region of the end face of the tool head, a gap is arranged.
  • a reduction of, in particular apparatus or cost, manufacturing costs for the production of tools is also obtained by a method according to claim 23.
  • the method of claim 23 is used to produce a tool head element for a tool for rubbing, sinking, drilling and / or milling.
  • the method is for producing a prescribed tool head element.
  • the tool head element comprises a tool head section and at least one fastening section adjoining the tool head section.
  • a mold is provided into which a powder, in particular a metal powder comprising preferably hard metal, is introduced and pressed into a compact.
  • the mold has at least one cone with an opening angle in an angle range between about 2 ° and about 10 °, preferably about 4 ° or 8 °.
  • An angle range between about 6 ° and about 10 ° may also be expedient.
  • the mold comprises, in particular in the region of the tool head section, at least one recess with which a on the Tool head element arranged torque-supporting means can be generated.
  • the compact is heated in a second process step. It can be provided that a passage opening is arranged in the tool head element before pressing or during pressing. In the passage opening, a fastening element for attaching the tool head formed from the tool head element can be arranged.
  • the symmetry axis of the passage opening can be aligned with the axis of symmetry of the tool head.
  • the compact can be processed mechanically.
  • at least one demoulding slant may be provided in the mold.
  • the pressed product can be removed from the mold with less effort after pressing.
  • the at least one Entformungsschräge can be removed after pressing, such as in a post.
  • the removal can be done by grinding.
  • the mold may comprise at least one recess and / or a protrusion, whereby the compact comprises at least one channel, in particular a coolant channel.
  • 4 to 6 channels are provided.
  • the channel or channels are arranged in the region between the fastening element and the tool head, in particular between the fastening element and a recess provided for the fastening element in the tool head.
  • a reduction of, in particular apparatus or cost, manufacturing costs for the production of tools also results from a method according to claim 28.
  • the method according to claim 28 relates to the production of a tool head for a tool for rubbing, sinking, drilling (drilling) and / or milling.
  • the tool head comprises a tool head section and at least one attachment section adjoining the tool head section.
  • a first method step having the above-described features of the method for producing a tool head element is provided.
  • at least one further method step is provided, in which the tool head section is processed, in particular by grinding, so that the tool head section is suitable for rubbing, countersinking, (up) drilling and / or milling.
  • 1A is a tool head element in perspective view
  • 1 B is a tool head for milling in perspective view
  • 3A is a tool head element according to FIG. 2 in a sectional view
  • FIG. 3B shows a tool head element according to FIG. 2 in an end view
  • 3C shows an alternative design of a tool head element in a side view
  • FIG. 3D shows a tool head with a release agent
  • 4A-C a first variant of a tool head in different views
  • 5A-C show a second variant of a tool head in different views
  • 6A is a tool receiving means in a side sectional view
  • FIG. 6B shows a detail of a tool receiving means according to FIG. 6A, FIG.
  • FIG. 6C shows a tool receiving means according to FIG. 6A with inserted tool head (schematically), FIG.
  • Fig. 8 is a tool receiving means with a coolant supply in lateral
  • FIGS. 1A and 1C A perspective view of a tool head element 1 can be taken from FIGS. 1A and 1C.
  • a tool head 2 can be made by pressing, in particular a tool head 2 according to Figures 1B, 4A-C and 5A-C.
  • the tool head element 1 according to FIG. 1A comprises a tool head section 3 with a first diameter and a fastening section 4 adjoining thereto.
  • the fastening section 4 has a second diameter which is smaller than the first diameter of the tool head portion 3.
  • an (inner) radius (40) may be provided (see Fig. 1C).
  • the attachment portion 4 comprises a tapered taper 6 which extends over a portion 7 of the attachment portion 4. Along the taper 6 becomes the diameter of the attachment portion 4 progressively smaller, so that the attachment portion 4 at the end opposite to the tool head portion 3 has a third diameter smaller than the first diameter (the tool head portion 3) and smaller than the second diameter (portion) 7 of the attachment portion 4 adjacent to the tool head portion 3).
  • a tool head 2 can be manufactured from the pressable tool head element 1 according to FIG. 1A, whereby the tool head 2 can be suitable for rubbing, countersinking, (drilling) up or milling. Whether the tool head 2 is suitable for rubbing, drilling, countersinking or milling depends on how the tool head element 1 according to FIG. 1A is machined and / or coated. Are in the processing area 8 of the tool head portion 3, for example, several (about six, see Fig. 4A-C) cutting edges 9 arranged, and the cutting edges 9, for example, with respect to the axis of symmetry 10 of the tool head element 1 has a slope 11, so the resulting tool head 2 for Milling be suitable.
  • the inclination 11 of the cutting edge 9 may differ from a milling tool head in a drilling tool head. It can also be provided cutting edges which are parallel to the axis of symmetry and therefore have no inclination.
  • the symmetry axis 10 extends through the tool head section 3 and through the attachment section 4.
  • a tool head 2 suitable for milling with a plurality of cutting edges 9 can be taken from FIG. 1B. Between the cutting edges 9 or in the region of the cutting edges 9 gaps may be provided, which contribute to the optimization of the chip guide.
  • the tool head 2 according to FIG. 1B has been produced from a tool head element 1, for example according to FIG. 1A.
  • the tool head 2 according to FIG. 1B can be inserted in a tool receiving means (14, see for example FIG. 6A).
  • the tool head 2 is usable so that it is exchangeable. In this way, a worn tool head can be exchanged, so that the total tool costs can be reduced.
  • the wearing part, ie the replaceable tool head 2 can be formed from a hard or hardened material, in particular in the area of the cutting edges 9.
  • the tool head 2 can be manufactured in a favorable manner, namely by pressing and reworking.
  • the tool receiving means 14 may be formed from other materials or from a different material composition, in particular because the mechanical requirements for the tool receiving means 14 are different than those which are directed to the tool head 2.
  • the tool head 2 has a high strength and Hardness, whereas the tool receiving means 14 has a deviating flexural rigidity and mechanical strength.
  • FIG. 1A It can be seen from FIG. 1A that a through opening 12 is provided in the tool head element 1, which extends along the axis of symmetry 10.
  • the passage opening 12 can also be removed from the tool head 2 according to FIG. 1B.
  • a not shown in Figures 1A to 3C fastener 13 can be arranged.
  • the tool head 2 With the fastening element 13, the tool head 2 can be fastened in a tool receiving means 14.
  • a tool receiving means 14 with a tool shank 15 and receiving shank 36 can be taken from FIGS. 6A and 6B, which are described below.
  • the tool head element 1 according to FIG. 1A can be produced by pressing a (hard) metal powder in a mold and then feeding it to a heat treatment such as sintering.
  • the sintered compact can then be reworked, for example by grinding. Turning may be done before sintering.
  • a demoulding skew 16 can be provided.
  • FIG. 2 which can be taken from a lateral view of the tool head element 1 according to FIG. 1A
  • a draft angle 16 is provided in the area of the tool head section 3 and the passage opening 12.
  • the Entformungsschräge is formed as a 0.5 ° bevel.
  • radii 40 may be provided in the region of the edges / transitions ranging from about 0.5 mm to about 5 mm.
  • a taper 6 is provided, the taper angle is about 8 °.
  • the opening angle of the cone is understood, which is formed by the tapered portion 7 of the mounting portion 4.
  • a taper angle of about 4 ° may be appropriate.
  • the tool head element 1 comprises a chamfer 34.
  • the chamfer 34 is arranged in the region of the recess 27 on the end face of the tool head section 3. It is a chamfer angle of about 8 ° provided. By the chamfer 34 is achieved that the cutting behavior of the tool head 2 is improved, in particular when the tool head element 1 is further processed to a tool head 2 for a milling tool. It can also be seen from FIG. 2 that a radius 40 is provided in the region of the end face 39 of the fastening section 4.
  • a torque-supporting means 17 is arranged in the (transition) region 5 between the tool head section 3 and the fastening section 4.
  • the torque-supporting means 17 is adapted to transmit a torque from a tool receiving means 14, such as shown in FIG. 6A, on the tool head 2, approximately according to FIG. 1 B, at least partially.
  • the torque-supporting means 7 is formed as a cam 18 or as a "nose.” If the tool head 2 is suitable for a nominal dimension of 12 mm (diameter), the cam 18 can be a (FIG.
  • a shaping element 35 may also be provided as a torque-supporting means
  • the mold element 35 or the cams 18 of the tool head 2 according to FIG. B is suitable for engaging in a recess 19 in the region of a receiving opening 20 of a tool receiving means (14, FIG. 6A), the recess 19 having a recess shape corresponding to the shape of the tool holder 2, it can be seen that the torque-supporting means 17 extends over the entire length of the (transition) area 5 between the tool head section 3 and fastened section 4 extends.
  • FIG. 3B shows an end view of the tool head element 1 according to FIG. 1A.
  • the torque-supporting means 17 at least partially comprises a radius 40, it can also be provided several (inner and / or outer) radii, wherein the inner radii in a range of about 0.5 mm to about 1 , 5 mm and the outer radii in a range of about 1 mm to about 5 mm.
  • FIG. 3B shows that the axis of symmetry 10 runs centrally through the center of the tool head element 1 perpendicular to the plane of the drawing.
  • FIG. 3D shows a tool head 2 which is manufactured from a tool head element 1 according to FIGS. 1A, 1C.
  • a screw 24 formed fastener 13 is arranged in the through hole 12 of the tool head 2 as a screw 24 formed fastener 13 is arranged.
  • the screw 24 has a screw head 28 and a thread 41, wherein the thread 41 via a portion of the shank of the screw 24 extends.
  • the screw 24 is tightened, ie the thread 41 engages in a mating thread 26 in the tool receiving means 14 and a force is transmitted to the tool head 2 in the axial direction, which is directed downward in accordance with FIG. 3D.
  • the tool head 2 is thereby pressed into the cone (20), whereby upon release of the tool head 2 on the tool head 2 a to expend some strength.
  • a removal solvent 32 is arranged on the screw 24 according to FIG. 3D outside the passage opening 12.
  • the removal means 32 is formed as a ring 38 which is captively fixed to the shank of the screw 24.
  • the attachment of the ring 38 to the screw 24 can be done by pressing, gluing, welding or about by a positive connection.
  • the ring 38 is captively attached to the screw 24.
  • the screw 24 in the tool head 2 is arranged captive (rotatable).
  • the tool head 2 according to FIG. 3D comprises the fastening element 13 (screw 24) and the removal means 32 (ring 38).
  • the tool head according to FIG. 3D comprises the removal means 32 and the attachment element 13, which are likewise exchanged when a tool head (for example, according to the application worn out) is replaced.
  • a gap 41 is arranged between the plate 38 and the end face 39 of the mounting portion 4 of the tool head 2.
  • a gap 41 is arranged in the intermediate space 42 in the installed and fixed state of the tool head 2 - a channel 29 through which a fluid, such as a cooling liquid, from the shaft of a tool receiving means 14 to the tool head 2 can be conducted.
  • the channel 29 can through the gap 41 be formed.
  • the cooling fluid can pass through the channel 29 into the region of the passage opening 12.
  • There is between the screw 24 and the wall of the through hole 12 is a channel with an annular cross-section. In the region of the recess 27, the coolant enters microchannels 30.
  • FIG. 3C shows an alternative embodiment of a tool head element 1, in which a draft angle 16 is arranged on the tool head section 3. After the tool head element 1 has been pressed and prior to the machining of the tool head element 1 to a tool head 2, for example for boring a bore, the relief bevel 16 is ground before cutting edges are arranged in the machining area 8. It can also be seen from FIG. 3C that 17 radii can be arranged both on the tool head section 3 and on the transitional region 5 and the torque-supporting means.
  • FIGS. 4A to 4C and 5A to 5C Alternative configurations of tool heads 2 for milling tools can be taken from FIGS. 4A to 4C and 5A to 5C.
  • the tool heads 2 according to FIGS. 4A to 4C and 5A to 5C are manufactured from a tool head device 1 according to FIG. 1A and each comprise a plurality of cutting edges 9.
  • the tool heads 2 according to FIGS. 1B, 4A to 4C and 5A to 5C differ at least By the torque-supporting means 17.
  • the torque-supporting means 17 comprises at least one oval 21.
  • Fig. 4B which shows an end view of a tool head 2 according to Fig.
  • the torque supporting means 17 comprises at least two sections 22 having a first radius and at least two sections 22 'having a second radius, the first radius being smaller than the second radius.
  • the torque-assisting means 17 according to Fig. 4B may further comprise a portion 22 "which does not comprise a radius but rather a plane surface
  • a side view of the tool head 2 according to Fig. 4A can be taken from Fig. 4C.
  • the torque-supporting means 17 is arranged symmetrically with respect to the axis of symmetry 10 so that at least one first section 22 with a first and at least one second section 22 'is arranged on a second radius on two opposite sides of the axis of symmetry 10.
  • FIGS. 5A to 5C A further alternative embodiment of a tool head 2 for a tool for milling can be taken from FIGS. 5A to 5C.
  • the torque-supporting means 17 comprises two partial regions 23, 23 ', of which each partial region 23, 23' comprises at least one molded segment.
  • the first shaped portion of the first portion 23 of the torque-supporting means 17 of the tool head 2 according to FIG. 5B comprises a bevel having at least one radius.
  • a second shaped portion of the first portion 23 includes a first and a second radius and a changing curvature, respectively.
  • Both partial regions 23, 23 ' are evenly distributed along the circumference of the (transition) region between fastening section 4 and machined tool head section 3 of the tool head 2, whereby they are arranged symmetrically with respect to the symmetry axis 10.
  • the torque-supporting means 17 according to the embodiments of the tool head element 1 and the tool head 2 have the property that a positionally accurate and / or rotationally secure arrangement of the tool head 2 can be carried out on a tool receiving means 14.
  • a positionally accurate arrangement may be, for example, that - as shown in Figures 1A and 1B - the torque-supporting means 17 comprises a single correspondingly shaped portion (mold member 25 and cam 18).
  • FIG. 9A Another variant of a tool head 2 can be taken from FIG. 9A.
  • the torque-supporting means 17 is formed by a shoulder 44 in the transition region 5.
  • a plan view of the tool element 2 shown in FIG. 9A is shown in FIG. 9B, which shows that the shoulder 44 is arranged partially in the transition region 5.
  • the heel extends over an angle of 180 ° or nearly 180 °, ie over half the circumference of the area 5. It can also be provided a larger or smaller angle, for example, the torque-supporting means 17 can be over a quarter or over Extend one third of the circumference or over a (circular) sector which is greater than 180 °.
  • the end face 45 of the paragraph 44 According to the lateral view shown in FIG. 9A, it runs parallel or nearly parallel to the axis of symmetry 10 of the tool element 2. A slight draft angle in the region of the end face may be provided.
  • FIG. 10A shows a side view of a further variant of a tool element 2, which differs from that according to FIG. 9A / B in that at least one end face 45, in particular both end faces 45, opposite at least one plane in which the axis of symmetry 10 lies, inclined by an angle is / are. If both end faces are inclined, as can be seen from the plan view of the tool element according to FIG. 10B, the end faces can run parallel to one another.
  • the inclination of the end faces 45 may be such that the circumference of the shoulder 44 in the region of the head section 3 is greater than in the region of the fastening section 4.
  • the angle of inclination of the end faces 45 with respect to the symmetry axis 10 may be 45 ° or nearly 45 °.
  • smaller or larger angles of inclination of the end faces 45 for example in an angular range of about 5 ° to about 80 °, can be provided.
  • FIG. 6A shows a tool receiving means 4, in which a tool head 2 according to FIGS. 1B, 4A, 5A can be arranged.
  • the tool head 2 is inserted with its attachment portion 4 in a receiving opening 20 so that the torque-supporting means 17 engages in the torque-supporting means provided for recess 19 with a torque-supporting means 17 corresponding recess shape.
  • the arrangement of the tool head 2 in the receiving opening 20 is such that the surface of the end face 39 with the boundary of the receiving opening 20 has no contact. Only the cones of the mounting portion 4 and the receiving opening 20 are in contact. This can be seen in FIG. 6C, in which a tool receiving means 14 is shown, in which a tool head 2 is mounted (schematic representation).
  • a gap 48 results between the tool head 2 and the end face of the tool receiving means 14, which is exaggerated in the schematic illustration according to FIG. 6C.
  • the gap 48 may be very small, ie significantly smaller than shown in Fig. 6C.
  • FIG. 6C it results that a transfer of forces and / or moments from the tool receiving means 14 to the tool head 2 is intended only in the Area of the cones (taper 6, receiving opening 20) and / or in the region of the torque-supporting means 17 takes place.
  • a fastening element 13 of the tool head 2 is fixed in the tool receiving means 14, wherein a fastening means of a screw 24 may be provided.
  • the thread 25 of the screw 24 is arranged in a mating thread 26 of the tool head 2.
  • the screw head 28 is arranged in a recess 27 for the arrangement of the fastening element 13.
  • a fastening element 3 arranged in the tool receiving means 14 can be taken from FIG. 7C.
  • the fastening element 13 comprises a thread 25 which engages in a mating thread 26. It may be a counter-element 46, for example, a lock screw may be provided.
  • an opening 48 (transverse bore), in particular for actuating (loosening / fastening) of the counter element 46 may be provided.
  • the lock nut is captively fixed to the fastener 13, in particular fixed so that upon actuation of the Auslierestoffs 46, the fixation is canceled, so that the Herauslierestoff 46 is actuated against the tool head 2.
  • a gap 42 or a gap, in particular for a fluid transport may be provided between the counter element 46 and the tool head 2.
  • a channel 29 is arranged through which coolant to the tool head 2 can be guided.
  • a plurality of microchannels 30 are arranged, which form a coolant channel 31, and through which the coolant is evenly distributed where the tool head 2 is arranged.
  • FIG. 6B An alternative or additional removal means 32 for releasing the tool head 2 from the receiving opening 20 of the tool receiving means 14 can be taken from FIG. 6B.
  • the removal means 32 comprises a recess or opening 33 or bore.
  • the opening 33 is perpendicular or nearly perpendicular to the axis of symmetry 10.
  • an effect element can be used, through which the tool head 2, in particular in the region of the mounting portion 4, with a tool head 2 from the receiving opening 20 releasing action is acted upon.
  • the action element may comprise a lever or a linkage, via which a force or a torque can be transmitted to the tool head 2.
  • FIG. 8 shows a section of a tool receiving means 14 in a lateral sectional view, in which two coolant supply lines 43 can be seen.
  • Coolant can be supplied to a tool head (not shown in FIG. 8) through the coolant feeds 43.
  • a positionally accurate coupling of the coolant paths in the tool head 2 to the coolant feeds 43 is required. This is simplified if the positioning of the tool head on the workpiece take-up means takes place with exact position , about means of a torque-supporting means 17 according to FIG. 1B or according to the figures 4B / 5B.

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

Abstract

L'invention concerne un élément de tête d'outil (1) destiné à la fabrication d'une tête d'outil (2) qui comporte au moins un tranchant (9) et qui peut être disposé dans un moyen de réception d'outil (14). L'élément de tête d'outil (1) comporte au moins une partie de tête d'outil (3) et au moins une partie de fixation (4) qui est adjacente à la partie de tête d'outil (3) et qui présente un amincissement (6) notamment conique. La partie de tête d'outil (3) comporte au moins une zone d'usinage (8) qui peut être usinée de telle sorte que l'élément de tête d'outil (1) forme une tête d'outil (2) destinée à un outil d'alésage ou un outil de chanfreinage ou un outil de perçage, en particulier un outil de réalésage ou un outil de fraisage. En outre, l'invention concerne une tête d'outil (2) formée à partir de l'élément de tête d'outil (1) et un moyen de réception d'outil (14) destiné à la tête d'outil (2).
PCT/IB2015/000110 2014-02-03 2015-02-03 Élément de tête d'outil pour la fabrication d'une tête d'outil, tête d'outil et moyen de réception d'outil ainsi que procédé de fabrication d'un élément de tête d'outil et d'une tête d'outil WO2015114449A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15708266.0A EP3102355A1 (fr) 2014-02-03 2015-02-03 Élément de tête d'outil pour la fabrication d'une tête d'outil, tête d'outil et moyen de réception d'outil ainsi que procédé de fabrication d'un élément de tête d'outil et d'une tête d'outil

Applications Claiming Priority (2)

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DE202014000866.3U DE202014000866U1 (de) 2014-02-03 2014-02-03 Werkzeugkopfelement zum Fertigen eines Werkzeugkopfes, Werkzeugkopf und Werkzeugaufnahmemittel
DE202014000866.3 2014-02-03

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WO2015114449A1 true WO2015114449A1 (fr) 2015-08-06

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CN110961863A (zh) * 2019-11-18 2020-04-07 常州时进精密机械有限公司 锥孔镜面加工工艺
CN113427263A (zh) * 2021-06-29 2021-09-24 河北高工工具有限公司 坦克发动机缸套加工专用阶梯镗铰刀

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DE202014000866U1 (de) 2015-05-06

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