EP2825341A1 - Procédé et outil pour la production par enlèvement de copeaux d'un perçage cylindrique aux dimensions précises en partant d'un perçage existant avec addition d'un usinage de finition - Google Patents

Procédé et outil pour la production par enlèvement de copeaux d'un perçage cylindrique aux dimensions précises en partant d'un perçage existant avec addition d'un usinage de finition

Info

Publication number
EP2825341A1
EP2825341A1 EP13711572.1A EP13711572A EP2825341A1 EP 2825341 A1 EP2825341 A1 EP 2825341A1 EP 13711572 A EP13711572 A EP 13711572A EP 2825341 A1 EP2825341 A1 EP 2825341A1
Authority
EP
European Patent Office
Prior art keywords
cutting edge
bore
diameter
stoßstempels
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13711572.1A
Other languages
German (de)
English (en)
Inventor
Peter Kopton
Eugen Maurer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
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 Audi AG filed Critical Audi AG
Publication of EP2825341A1 publication Critical patent/EP2825341A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
    • B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B23C3/122—Trimming or finishing edges, e.g. deburring welded corners of pipes or cylinders
    • B23C3/124—Trimming or finishing edges, e.g. deburring welded corners of pipes or cylinders internally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C7/00—Milling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool
    • B23C7/04—Milling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool to planing or slotting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D11/00—Planing or slotting devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D13/00—Tools or tool holders specially designed for planing or slotting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D37/00—Broaching machines or broaching devices
    • B23D37/22—Broaching machines or broaching devices for special purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D43/00—Broaching tools
    • B23D43/02—Broaching tools for cutting by rectilinear movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D5/00—Planing or slotting machines cutting otherwise than by relative movement of the tool and workpiece in a straight line
    • B23D5/02—Planing or slotting machines cutting otherwise than by relative movement of the tool and workpiece in a straight line involving rotary and straight-line movements only, e.g. for cutting helical grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B23D79/02—Machines or devices for scraping
    • B23D79/04—Machines or devices for scraping with rotating cutting-tool, e.g. for smoothing linings of bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2215/00—Details of workpieces
    • B23B2215/24—Components of internal combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23B2222/12—Brass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/12—Boron nitride
    • B23B2226/125—Boron nitride cubic [CBN]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/31—Diamond
    • B23B2226/315—Diamond polycrystalline [PCD]
    • 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
    • B23B27/10—Cutting tools with special provision for cooling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49995—Shaping one-piece blank by removing material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5104—Type of machine
    • Y10T29/5115—Planer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5168—Multiple-tool holder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/03—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/34—Combined cutting means
    • Y10T408/356—Combined cutting means including plunging [single stroke] cutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
    • Y10T408/45—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product including Tool with duct
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/78—Tool of specific diverse material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303752—Process
    • Y10T409/303808—Process including infeeding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/50082—Process
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/500984—Planing with means to lubricate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/501476—Means to remove flash or burr
    • Y10T409/50164—Elongated work
    • Y10T409/501804—Flash or burr inside hollow work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/502624—Means for cutting groove
    • Y10T409/502788—Arcuate groove
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/502624—Means for cutting groove
    • Y10T409/502788—Arcuate groove
    • Y10T409/502952—For rifling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/502624—Means for cutting groove
    • Y10T409/503116—Inside hollow work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/509348—Tool head

Definitions

  • the invention relates to a method and a tool for machining a precision, cylindrical bore with high surface quality and a length which can be a multiple of the diameter, from an existing bore with a radius related finishing allowance.
  • broaches and Räumdorne be used, which usually staggered from front to rear have a plurality of stepped further projecting cutting teeth.
  • Broaching tools are typically used for profiling, not the finishing and finishing of cylindrical holes with high surface quality.
  • the invention is therefore an object of the invention to provide a method and tool of the type mentioned, which allows a significant reduction in processing time compared to the conventional rubbing without loss of precision and surface quality of the cylindrical bores to be produced.
  • the invention relates to a method of machining a precision-machined, high-surface-area cylindrical bore having a length that can be a multiple of the diameter from an existing bore with a finishing allowance that is characterized by the finishing allowance during axial machining Working stroke of a Stoßstempels is peeled with a circular or substantially circular cutting edge at its front end to the nominal diameter of the finished bore, wherein the axial stroke is superimposed by a rotational movement, either the ratio of stroke and speed is constant or varied.
  • a tool for carrying out the method according to the invention, which has the shape of a Stoßst Zis, which is formed at the front end with a circular or substantially circular cutting edge whose diameter corresponds to the nominal diameter of the bore to be produced.
  • the ram preferably tapers immediately behind the cutting edge or behind a front region of a certain length.
  • a substantially circular cutting edge is here to be understood a cutting edge which produces a substantially cylindrical bore for accurately receiving and guiding a cylindrical shaft or axis, wherein small projections for the production shallow traits in the surface of the bore, which only affect the lubricating film locally, are disregarded.
  • a length of z. B. 38 mm requires the push only a single forward and return stroke and a processing time of z. B. about 0.6 sec. That is only about 1/50 of the duration of the exemplified Reibbearbeitung with a reamer.
  • the cutting edge of the thrusting die peels the grinding or finishing allowance from the bore wall so that it expands to the nominal diameter.
  • the material of the bore wall can be compacted and smoothed by the impact ram. This results in a high percentage of support. Traces and surface structures left by the tool on the bore wall during the forward and return strokes extend axially, i. H.
  • the tracks and surface structures run after processing by means of a reamer transverse to the direction of movement of the valves, so that it already comes when retracting the motor due to the friction of the valve stems transverse to the surface structures to a first wear.
  • the cutting speed in the finishing of the bores with the punch can easily be 5 m / min to 150 m / min, preferably 30 to 60 m / min or more.
  • the thickness of the finishing allowance depends on the diameter of the bore and the material. It must peel off with a single stroke, so shock, and then the cut surface must have the predetermined surface quality. For bore diameters up to 20 mm, the finishing allowance will normally be 0.01 mm to 0.5 mm, based on the radius, but it may also be smaller or larger. So that the impact punch can push out the chips peeled off from the bore wall itself from the bore, the impact punch is preferably slightly longer than the bore to be produced.
  • the chip formation takes place at the cutting edge at the front end of the Stoßst Zis. Starting either immediately behind the cutting edge or behind a front, cylindrical portion of certain length, z. 0.1-0.4 mm, the impactor is tapered relative to its cross-section at the cutting edge. The amount of taper should, on the one hand, be sufficient to prevent it from rubbing against the bore wall beyond a front portion of a certain length, while remaining stiff enough to guide the cutting edge safely.
  • a guide of the impact punch also takes place on the bore wall, namely on the front part of the impact punch, where the diameter is as large as or only slightly smaller than the diameter of the cutting edge. Therefore, the front part of the bumper can also take over the function, during the return stroke material that has been displaced during the cutting process radially outward and then pushed back into the bore to push back to the outside and thereby solidify and smooth. This applies not only to tools whose thrusting dies are tapered only behind a front region of a certain length, but also to those in which the taper already begins immediately behind the cutting edge but is still very weak there.
  • a special feature applies to tools for relatively long, narrow holes.
  • the peripheral regions between the webs are preferably sinkers with a depth of a few hundredths to some tenths of mm work, z. B. grind.
  • coolant lubricant channels open in the front regions of the depressions, in another embodiment alternatively or additionally also in the front end surface of the impact plunger.
  • a further improvement of the tool according to the invention may be that in the front region of the Stoßstempels, behind the front end formed cutting edge, distributed over the circumference, a plurality of radial projections are mounted, the z. B. 1 to 3 hundredths of mm protrude radially beyond the cutting edge and cut or push corresponding trains in the cylindrical bore wall, which can hold a small amount of oil.
  • the projections may be formed on the impactor, mounted or machined by laser from radially outside the cutting edge existing material.
  • a similar result can be obtained if the cutting edge formed at the front end of the bumper is a polygonal approximated to a circular shape, the radius in the corner regions of the polygon z. B. about 2 to 3 hundredths of a mm greater than in the central peripheral regions between the corner regions.
  • the last mentioned radial projections or the corner regions of a substantially total circular, polygonal cutting edge helical axial extensions on the peripheral surface of the Stoßstempels and this is not only axially in the production of the bore, but also at the same time according to the pitch of the screw flights driven in the direction of rotation. In this way, twisted trains are created in the bore wall which can cause a valve to be slightly rotated at each stroke and thereby more evenly loaded over the circumference.
  • a rotational movement is added to the impact movement which is generated by the stroke of the impact punch.
  • the rotational movement can be synchronous or asynchronous with the thrust movement. Synchronous means that the impact movement is superimposed by the rotational movement, whereby the ratio of stroke and rotational speed is constant. In the case of an asynchronous progression, there is no reference between the impact speed and the rotational speed, ie a constant ratio not before.
  • the speed may correspond to a common engine speed between 1 and 22,000 rpm. Turning speeds of 30,000 rpm or more may also be suitable.
  • the stroke amounts in particular to 5 m / min to 60 m / min or more.
  • a further preferred embodiment of the invention provides that the front end of the Stoßstkovs with the cutting edge and possibly also the front region with the same or only slightly smaller diameter without or with radial projections of carbide, polycrystalline diamond (PCD), cubic boron nitride ( CBN), or a CVD (Chemical Vapor Deposition) produced diamond layer.
  • the diamond layer is available as a solid material and is either soldered to a subcarrier or directly on the impactor, in particular in a vacuum.
  • the thickness of the layer produced by the CVD method may be 0.5 mm.
  • the cutting material provides adequate service life of the proposed tool for high volume production.
  • the impact stamp is made entirely of hard metal or has a front side forming a cutting edge cylindrical disc made of hard metal or a cylindrical disc of cutting material, such as PCD or CBN or a diamond layer produced by CVD method.
  • At least the cutting material PKD and CBN is applied to a support made of hard metal as soldered, which in turn with the impact stamp z. B. is connected cohesively by soldering.
  • the connection and soldering zone should extend at least at a distance of at least 3 mm, in particular at a distance of between 3 mm and 8 mm to the end face, which consists of the cutting material.
  • the impact punch has a smaller diameter compared to the support, so that the connection and soldering zone is located outside the conforming zone, ie the region in which the material in which the bore is to be made, to the Clinging tool could.
  • a diamond layer produced in the CVD-V is used as the cutting material, it is either connected to a carrier made of hard metal and then soldered onto the bump or directly on the bump, in particular in a vacuum.
  • the connection as well as the soldering zone should also be outside the conforming zone.
  • the thickness of the cutting material ie the hard metal as the cutting material or the layer thickness of the PCD, CBN or the diamond layer produced by the CVD method is between 0.1 mm to 3 mm or more, where the thickness should be determined as a function of the elastic fitting of the workpiece through which the bore is to be pushed. This is to ensure that the pusher can be easily withdrawn regardless of the nestling of the material to the ram in the range of the cutting material.
  • the cutting edge is the peripheral region of a planar surface consisting of the cutting material, which is the end face of the impact stamp, then a ring made of the cutting material can also be used, which extends on the front side of the tool.
  • the tool can be integrally, z.
  • B. PCD is connected to a support layer of hard metal.
  • Fig. 1A is a central longitudinal section through a cutting tool for
  • FIG. 1B a section of FIG. 1A in the region of the cutting edge of the
  • FIG. 1C is a perspective view of the tool of FIG. 1A; FIG.
  • Fig. 1D shows a detail of Fig. IC in the region of the front end of
  • Fig. 2A is a central longitudinal section through a compared to FIG. 1 modified to the effect tool that his push punches axial webs and between these depressions, in which
  • Fig. 2B shows a cross section through the impact die of the tool according to
  • FIG. 2C is a side view of the tool of FIG. 2A
  • FIG. 2D is a perspective view of the tool of FIGS. 2A-C; FIG.
  • FIG. 3A shows a central longitudinal section through a comparison with FIG. 2A to the effect modified embodiment that the front end of
  • 3B shows a cross section through the impact stamp according to section line C-C in FIG.
  • 3C is a side view of the tool of FIG. 3A.
  • FIG. 3D is a perspective view of the tool of FIGS. 3A-C; FIG.
  • FIG 4A is a central longitudinal section through a modified compared to FIG 3A, the tool that behind the cutting edge radial projections are present, which generate in the bore wall trains,
  • FIG. 4B is a side view of the tool of FIG. 4A, 00803
  • FIG. 9 shows a cross section through the impact stamp according to section line C - C in FIG. 4B, FIG.
  • FIG. 1 shows a longitudinal section through a tool modified relative to FIG. 1A in that the impact stamp has a polygonal cutting edge which approximates a circular shape and in the front region of the impact stamp coolant coolant channels open in the peripheral surface, a side view of the tool according to FIG. 5A, FIG.
  • FIG. 1A Side view and front view of a drill head used instead of the milling head of Fig. 6 E, F.
  • the tool shown in Fig. 1A consists of a circular cross-section impact die 10 made of hard metal, which is soldered with its rear end in a matching hole in a clamping shank 12.
  • the clamping shaft 12 is z. B. from a tempered tool steel.
  • the tool is a pre-drilled hole in a workpiece z. B. brass or steel bronze by machining ablation of a Reibzugabe of z. B. 0.1 to 0.5 mm thickness to the nominal diameter of the finished bore and thereby the surface quality can be achieved as in a processing with a reamer.
  • Such quality requirements are z. B. provided to holes for valve guide in internal combustion engines.
  • the impact stamp according to Fig. 1A is formed at its front end with a substantially circular cutting edge 14 whose diameter corresponds to the nominal diameter of the bore to be produced.
  • the cutting edge 14 is followed by a forwardmost portion 16 having an axial length of e.g. 0.1-0.2 mm, in which the plunger 10 is formed cylindrically with the same diameter as the cutting edge 14.
  • the further circular cross-section impact stamp 10 tapers conically, wherein the inclination angle a between a straight line in the circumferential surface lying in the straight line and a parallel to the central longitudinal axis in the example is 0.5 °.
  • the conical taper extends over a greater length than the length of the bore to be made, e.g. over 40.5 mm with a bore length of 38 mm. By the taper is achieved that the ram does not rub with its rear portion on the bore wall.
  • the taper of the impact punch may also begin immediately at the cutting edge 14.
  • the conicity of the taper will then be much smaller, for. B. only one to two ⁇ on lengths of 20 mm.
  • the taper immediately after the cutting edge only minimally affects, so that it can be assumed that the foremost portion 16 of FIG. 1B pralctisch still the same diameter as the circular cutting edge 14. Therefore, also retains in this version of the front portion 16 of the Stoßstempels 10 its leading and smoothing function.
  • the impactor 10 is not circular in cross-section but has an outer peripheral surface which is reduced to a plurality of axially extending webs 18 (see FIGS. 2B-D).
  • depressions 20 with a depth of z. B. 0.05 to 0.5 mm, which may possibly also be shallower or deeper, preferably in each of whose front areas a coolant lubricant channel 22 opens.
  • the cooling lubricant channels 22 are connected to a central supply channel 24 extending centrally through the impact punch.
  • a radial taper is also starting along the webs 18, in particular on the cutting edge 14, but this is preferably made only small, eg only one to two ⁇ to 20 mm in length. With this embodiment, it is endeavored to drive the punches on a large part of its length at the bore wall, especially for long holes with a relatively small diameter. The friction occurring is reduced by the supplied with coolant depressions 20 between the webs 18.
  • the circumferential surface of the Stoßstempels 10 should be according to the illustration of FIG. 1 A - D cutting edge free outside the frontal cutting edge.
  • Fig. 3A is similar to that of Fig. 2A, but has the advantage that the front end of the impact punch 10, where the cutting edge 14 is located, from a layer or plate 15 of polycrystalline diamond (PCD) or a other extremely hard cutting material such as cubic boron nitride (CBN) or a CVD diamond layer. Also, the PCD or the CBN is mounted on a support, which consists in particular of hard metal and has the geometry of a cylindrical disc. Such is indicated in Fig. 3 A with 15 '.
  • PCD polycrystalline diamond
  • CBN cubic boronitride
  • the thickness of the layer of PCD or CBN or a diamond layer produced in the CVD method should be between 0.1 to 3 mm, without thereby affecting the invention is restricted.
  • the thickness of the layer depends on the material in which the bore is to be introduced, that is of its elasticity, so that when retracting the impact punch 10, the elastic nestling of the material essentially acts on the cutting material.
  • connection such as soldering zone 15 "and the hard metal carrier 15 ', which is materially connected to the plunger 10 at a distance between 3 and 8 mm from the end face of the hard metal layer 15 extend to unwanted forces during retraction by In particular, the distance should be at least 3.2 mm or more
  • the connection and soldering zone 15 extendends in the region of the shaft of the impact punch 10, in which this in the Compared to the cutting edge has a smaller diameter.
  • the tool shown in Fig. 4A-F which largely coincides with that of FIG. 3A-D, is obtained by the fact that the bumper at its front end behind the soldered there plate 15 made of PCD on hard metal pad on a portion 17 of z. B. 4 mm in length initially has a slightly larger diameter (eg 6.05 mm) than the cutting edge (eg 6.0 mm) made of PCD.
  • F need not necessarily extend axially straight line, but may be helical as shown in FIG. 4H. If the tool is rotated during the forward and return strokes, twisted lines will be generated in the bore wall, which may have a positive effect on the movement of the valves in the bores produced.
  • the cutting edge 14 is already ground so that it has a circular diameter larger than the nominal diameter Dn (for example, 6 mm) approximating a circular shape with larger diameter (z B. 10 mm) and corners 27 'composite, polygonal shape receives.
  • Dn nominal diameter
  • z B. 10 mm larger diameter
  • the polygonal shape of the cutting edge is best seen in Fig. 5C and is also clearly expressed in Fig. 5E.
  • This shape of the tool also lends itself to creating non-tangle or twisted features in the bore wall to be made by forming the corners 27 'with either an axially rectilinear or a helical extension.
  • the only example called number of 12 convex side edges of the polygon can also be chosen smaller or larger.
  • the rotational movement can be synchronous or asynchronous with the thrust movement. Synchronous means that the impact movement is superimposed by the rotational movement in such a way that the ratio of lifting speed and rotational speed is constant. In an asynchronous process, the ratio of impact speed and speed varies. As a result, feed and retraction can be facilitated. It is a stiction avoided or reduced to an extent that basically only a sliding friction occurs.
  • the impact stamp 10 during the impact with a speed of z. B. 2,000 rev / min or more or less, in particular rotations of 30 000 rev / min or more to rotate.
  • the stroke should be in the range of 5 m / min or more, in particular up to 150 m / min. Due to the numerical values, however, the teaching according to the invention is not restricted.
  • a tool according to Fig. 6A-H is proposed. It has an impactor 10 of Figures 1A-D, 2A-D or 3A-D having the above-described characteristics, variations and functions.
  • the ram 10 is only combined with a milling head 30 for face milling of the bottom of the blind bore or with a drill head 32, the cutting edges of a vertex angle of eg 90 ° or 120 ° or any other suitable acute or obtuse angle. You could also be ground rounded so that the bottom of the blind bore thus obtained is not the shape of a hollow cone but a dome.
  • the milling or drilling knob 30 and 32 may be formed integrally with the push-10 or made individually and fixedly attached to the front end of the push-10, z. B. soldered. It should not be larger in diameter, preferably slightly smaller than the cutting edge 14.
  • an annular recessed transition region 33 is provided between the cutting edge 14 and the milling or boring head 30, 32; in the embodiments according to FIGS. 6E, F and 6 G, H, the milling head 30 is located
  • the blind bore is finished as far as but butt and accurate fit, as the ram 10 axially advances. A certain section of the bore wall will remain up to its bottom without this finishing.
  • the ram 10 with milling or drilling head 30 and 32 can also be driven in rotation during the shock stroke, preferably at low speed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)

Abstract

L'invention concerne un procédé et un outil travaillant par enlèvement de copeaux qui servent à produire un perçage cylindrique aux dimensions précises, présentant une haute qualité de surface et une longueur qui peut représenter un multiple du diamètre, en partant d'un perçage existant, avec addition d'un usinage de finition. Pour raccourcir la durée de l'usinage de finition exécuté au moyen d'un alésoir, il est proposé d'utiliser un outil sous la forme d'un piston poussé (10) qui présente à l'extrémité avant une arête tranchante (14), circulaire ou sensiblement circulaire, dont le diamètre correspond au diamètre nominal du perçage à produire et qui se rétrécit, en commençant directement en arrière de l'arête tranchante (14) ou en arrière d'une région avant (16) ayant une longueur déterminée.
EP13711572.1A 2012-03-16 2013-03-15 Procédé et outil pour la production par enlèvement de copeaux d'un perçage cylindrique aux dimensions précises en partant d'un perçage existant avec addition d'un usinage de finition Withdrawn EP2825341A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012005191 2012-03-16
DE102012007514A DE102012007514A1 (de) 2012-03-16 2012-04-17 Verfahren und Werkzeug zur spanenden Herstellung einer passgenauen, zylindrischen Bohrung aus einer bestehenden Bohrung mit Fertigbearbeitungszugabe
PCT/EP2013/000803 WO2013135392A1 (fr) 2012-03-16 2013-03-15 Procédé et outil pour la production par enlèvement de copeaux d'un perçage cylindrique aux dimensions précises en partant d'un perçage existant avec addition d'un usinage de finition

Publications (1)

Publication Number Publication Date
EP2825341A1 true EP2825341A1 (fr) 2015-01-21

Family

ID=49043801

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Application Number Title Priority Date Filing Date
EP13711572.1A Withdrawn EP2825341A1 (fr) 2012-03-16 2013-03-15 Procédé et outil pour la production par enlèvement de copeaux d'un perçage cylindrique aux dimensions précises en partant d'un perçage existant avec addition d'un usinage de finition

Country Status (5)

Country Link
US (1) US9919389B2 (fr)
EP (1) EP2825341A1 (fr)
CN (1) CN104302430B (fr)
DE (1) DE102012007514A1 (fr)
WO (1) WO2013135392A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014006845B4 (de) 2014-05-13 2016-12-08 Audi Ag Werkzeug zum Aufrauen einer metallischen Oberfläche
DE102014014932B4 (de) 2014-10-07 2020-12-31 Audi Ag Verfahren zum Aufbohren einer vorgebohrten Werkstück-Kernbohrung
CN105215436A (zh) * 2015-09-17 2016-01-06 东方电气(广州)重型机器有限公司 一种深孔加工的钻铣复合刀具及使用其加工的方法
ITUA20163169A1 (it) * 2016-05-05 2017-11-05 Viero Srl Attrezzatura per la lavorazione di un canotto porta-sella e canotto porta-sella realizzato con tale attrezzatura
FR3094656B1 (fr) * 2019-04-03 2022-01-07 Safran Aircraft Engines Outil de brochage, machine de brochage comportant un tel outil et procédé d’usinage d’une pièce au moyen d’une telle machine
US11510760B2 (en) * 2019-09-17 2022-11-29 Dan Rosen Hydrating cancellus bone cortical drill
CN112475825B (zh) * 2020-11-20 2022-10-28 重庆江增船舶重工有限公司 一种增压器滑动轴承阶梯环槽的加工方法
CN112548224B (zh) * 2020-12-02 2022-02-08 东莞市银天新能源有限公司 一种电池极片加工设备
IT202100002546A1 (it) * 2021-02-05 2022-08-05 Brighetti Mecc S R L Kit per trasformare una macchina utensile in una brocciatrice rotante
US20220288802A1 (en) * 2021-03-11 2022-09-15 Apex Mfg. Co., Ltd. Hole puncher
CN113210750B (zh) * 2021-05-10 2022-05-10 三花股份（江西）自控元器件有限公司 一种空调截止阀内孔去毛刺装置

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1310934A (en) * 1919-07-22 And ethan viall
US1394079A (en) * 1917-06-28 1921-10-18 Renault Louis Apparatus for use in calibrating and rifling the bore of firearms
US1441502A (en) * 1920-08-13 1923-01-09 Aluminum Manufactures Inc Broach
US2209025A (en) * 1938-03-14 1940-07-23 Detroit Broach Company Broach
US2548702A (en) * 1948-04-17 1951-04-10 Nat Supply Co Pipe upsetting and hot broaching tool
US2522440A (en) * 1949-09-22 1950-09-12 Roy J Freter Cold punching metal parts
DE1045765B (de) * 1954-04-20 1958-12-04 Klopfer A G Werkzeug & Maschin Kalibrierstempel mit schabender Kante und glaettender Flaeche zum Herstellen von genauen Bohrungen
CH369004A (de) * 1959-04-22 1963-04-30 Kaiser Heinz Schnellwechselfutter mit Satz von in dasselbe einsetzbaren Ausdrehwerkzeugen
NL8203489A (nl) * 1982-09-08 1984-04-02 Philips Nv Werkwijze voor het vervaardigen van het huis van een spiraalgroeflager.
US4526077A (en) 1983-07-21 1985-07-02 Detroit Punch & Retainer Corporation Heavy duty punch
US4762043A (en) * 1987-03-23 1988-08-09 Jacob L. Reich Long wearing punch
CN1038416A (zh) 1988-06-08 1990-01-03 索尼·斯尼得 改进型抗磨损冲头
DE4128028C2 (de) * 1991-08-23 1994-06-30 Alfred Mueller Reibwerkzeug mit Kühlmittelzufuhr
US20060075871A1 (en) * 2004-10-13 2006-04-13 M.O.M. Tools, Llc Dual head punch with tapered neck
CN201124200Y (zh) 2007-08-23 2008-10-01 湖北美标汽车制冷系统有限公司 改进的汽车空调集合管排孔加工刀具
ES1071078Y (es) * 2009-09-11 2010-03-24 Estampaciones Ind S A Punzon para procesos de estampacion y corte
GB2473485A (en) 2009-09-14 2011-03-16 Royal Bank Scotland Plc Processing electronic receipts
CN202105900U (zh) 2011-05-31 2012-01-11 浙江松信汽车空调有限公司 一种集液管冲孔成形刀

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013135392A1 *

Also Published As

Publication number Publication date
US20150158132A1 (en) 2015-06-11
WO2013135392A1 (fr) 2013-09-19
CN104302430B (zh) 2018-02-06
DE102012007514A1 (de) 2013-09-19
US9919389B2 (en) 2018-03-20
CN104302430A (zh) 2015-01-21

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