EP2921257A1 - Outil de rectification d'écroûtage avec des fentes pour l'absorption des résonances - Google Patents

Outil de rectification d'écroûtage avec des fentes pour l'absorption des résonances Download PDF

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Publication number
EP2921257A1
EP2921257A1 EP15159374.6A EP15159374A EP2921257A1 EP 2921257 A1 EP2921257 A1 EP 2921257A1 EP 15159374 A EP15159374 A EP 15159374A EP 2921257 A1 EP2921257 A1 EP 2921257A1
Authority
EP
European Patent Office
Prior art keywords
region
thickness
inclusive
slot
transition region
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Withdrawn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
EP15159374.6A
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German (de)
English (en)
Inventor
Michael Schulze
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.)
Dr Mueller Diamantmetall AG
Original Assignee
Dr Mueller Diamantmetall 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 Dr Mueller Diamantmetall AG filed Critical Dr Mueller Diamantmetall AG
Publication of EP2921257A1 publication Critical patent/EP2921257A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/14—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding conical surfaces, e.g. of centres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/02—Wheels in one piece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12—Cut-off wheels

Definitions

  • the invention relates to a peeling abrasive tool, preferably a peeling grinding wheel, with a carrier body and a hub for receiving a drive shaft.
  • Peel grinding wheels are well known in the art.
  • Pietschteiffractionn generally have a rotationally symmetrical carrier body, on the peripheral surface of an abrasive coating is attached.
  • Peel grinding wheels, or the workpiece to be machined are usually guided normal to the surface extent of the grinding wheel, so that the substantial material removal takes place on one side of the abrasive coating and not, as usual with cutting wheels, on its peripheral surface.
  • the grinding wheel is thus essentially not loaded in the radial direction but in the normal direction or at least with a force having a substantial normal component.
  • the grinding wheels are usually placed during the Schteifvorgangs in a high-frequency resonant oscillation.
  • the vibration that occurs is a surface vibration that depends, among other things, on the geometry and material of the grinding wheel, its speed and the feed rate.
  • the resonance vibration sometimes reaches sound pressure levels that are above the allowable limits, requiring soundproofing measures. Even in the event that limit values are not exceeded, these high-frequency and loud oscillations represent a considerable burden for the operating personnel of the processing machine.
  • Dervort invention therefore has for its object to provide a tool for working materials of the type mentioned above, which overcomes the disadvantages of the prior art and is characterized in particular by a suppression of resonant vibrations in peeling grinding operation.
  • the inventive tool for processing materials in particular a peel grinding wheel, a carrier body with a respect to a rotation axis substantially cylindrically symmetric geometry and with an inner hub through the center of which the cylinder axis extends centrally.
  • the carrier body has an inner diameter in the region of the hub and an abrasive coating having a thickness in the direction of the axis of rotation and a radial thickness on the peripheral surface of an outer region, such that the outer circumference of the abrasive coating defines the outer diameter of the tool.
  • a transition region with a thickness T is provided, wherein the thickness of the transition region is greater than the thickness of the abrasive coating.
  • the transition region has at least two slit-shaped passages arranged uniformly within the axis of rotation with respect to the rotation axis and having a slot thickness which extend from an inner region of the transition region to an outer region of the transition region.
  • the slot thickness is substantially the same across the entire thickness of the transition region, and the slot thickness is less than the thickness of the abrasive pad.
  • the slot widths of the slot-shaped feedthroughs are chosen very small and certainly smaller, preferably significantly smaller than the respective application thickness of the abrasive coating, in the context of this Description under the thickness of the abrasive coating whose dimension is to be understood in the direction parallel to the axis of rotation.
  • the bushings extend substantially radially from the inner region of the transition region to the outer region of the transition region. In a variant of this, the bushings extend in a direction deviating from the radius by a predetermined angle from the inner region of the transitional region to the outer region of the transitional region.
  • the straight-line extent of the slot-shaped passages in this embodiment facilitates in particular the production of peeling grinding wheels according to the invention, in which the slot-shaped bushings are incorporated by milling, laser cutting or wire erosion in the finished molded carrier body, or in the blank, before or after the attachment of the abrasive coating.
  • the slot-shaped passages have a curved path in their course from the inner region of the transition region to the outer region of the transition region, wherein the curved path can also have at least one point of inflection in its curvature.
  • the slot-shaped passages extend along a wave-shaped path from the inner region of the transitional region to the outer region of the transitional region.
  • This embodiment has proven to be advantageous in this respect as done by the non-linear design of the slot-shaped bushings, in particular in a wave-shaped course, reflections of vibrations at the interfaces, in this case at the defined by the slot walls interfaces in different directions and thus effectively a Scattering takes place, whereby the construction of standing waves is difficult or prevented. This leads to a suppression of resonance vibrations in the grinding operation.
  • the slot-shaped bushings in the region of their beginning and / or end on a substantially circular widened area, wherein the diameter is made greater than the slot thickness.
  • a defocusing of oscillation reflexes is achieved in a similar way, as described above, but on the other hand, the production of grinding wheels according to the invention is simplified, since, for example by introducing bores, suitable starting and end points for milling, laser cutting or wire erosion to be provided.
  • the slot-shaped bushings are arranged in their radial extent substantially centrally with respect to a center diameter between the inner diameter and the outer diameter.
  • the ratio of thickness of the transition region to thickness of the abrasive pad is between 1.2 and 20 inclusive depending on the application, preferably between 1.5 and 15 inclusive, further between 2 and 10 inclusive, further between 2.5 and 7 inclusive including, and more preferably between 3 inclusive and 5 inclusive.
  • the ratio of slot thickness to abrasive pad thickness is between 0.05 and 0.85 inclusive, depending on the application, preferably between 0.07 and 0.7 inclusive inclusive, more between 0.1 and 0.6 inclusive, more between 0.2 and more including and 0.5 inclusive, and more preferably between 0.25 inclusive and 0.4 inclusive.
  • an odd number of feedthroughs are provided, which are arranged uniformly along the central axis along the axis of rotation.
  • an even number of bushings may be provided.
  • Inventive carrier bodies are usually made of metallic materials, such as steel, brass, aluminum, copper, bronze or suitable metal alloys in order to absorb the shear forces generated in peeling grinding operation without damaging the carrier body can.
  • the abrasive coating is applied to the outer peripheral surface of the carrier body by gluing or sintering or similar known methods and is preferably selected from a group including diamond needles such as PCD, MKD, CVD, CBN needles, metal, plastic or ceramic bonded diamonds.
  • diamond needles such as PCD, MKD, CVD, CBN needles, metal, plastic or ceramic bonded diamonds.
  • metal- or plastic-bonded boron nitride, in particular cubic boron nitride comprises.
  • FIGS. 1 and 2 show an example of an embodiment of a peel grinding wheel according to the invention.
  • the grinding wheel has a carrier body 1 with an inner hub A and an outer outer region 3. Centrally the axis of rotation R extends through the hub A. Between the hub A and the outer region 3 a transition region 2 is arranged, the transition region 2 having a thickness T has.
  • the carrier body has an inner diameter a in the region of the hub.
  • an abrasive coating B is attached, which has a thickness D and a radial thickness C.
  • the outer diameter b of the grinding wheel is composed of the diameter of the outer periphery of the outer region 3 and 2 times the radial thickness C of the abrasive covering B.
  • the peeling grinding wheel according to the invention has four slot-shaped bushings distributed uniformly (ie symmetrically) around the axis of rotation in the transition region 5, which extend from the inner region of the transition region to its outer region, wherein the course of the slot-shaped passages 5 in the embodiment shown is wave-shaped.
  • the beginning and end of the slot-shaped bushings are also offset parallel to the radius so that the "zero line" of the wave-shaped extending slot comes to rest approximately on the radius.
  • the slit-shaped passages extend on both sides of the central diameter m lying substantially centrally between the inner diameter a and the outer diameter b inwardly or outwardly, so that the slot-shaped passages are arranged substantially centrally with respect to the average diameter m.
  • the slot-shaped passages have a slot width S which is essentially constant over the entire thickness T of the transition region (cf. Fig. 2 ). At both ends of the slot-shaped passages, that is at the inner and at the outer ends of circular expanded areas 8 are provided, whose diameter is greater than the slit width S.
  • the support body 1 tapers in the outer region 3 from the thickness T to the thickness D, wherein at the periphery of the outer region then the abrasive coating in the same thickness D is attached.
  • the ratio T / D in the present case is about 3.3 and the ratio S / D about 0.22.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP15159374.6A 2014-03-19 2015-03-17 Outil de rectification d'écroûtage avec des fentes pour l'absorption des résonances Withdrawn EP2921257A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014103719.7A DE102014103719A1 (de) 2014-03-19 2014-03-19 Schälschleifwerkzeug

Publications (1)

Publication Number Publication Date
EP2921257A1 true EP2921257A1 (fr) 2015-09-23

Family

ID=52684111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15159374.6A Withdrawn EP2921257A1 (fr) 2014-03-19 2015-03-17 Outil de rectification d'écroûtage avec des fentes pour l'absorption des résonances

Country Status (2)

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EP (1) EP2921257A1 (fr)
DE (2) DE102014103719A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1050987B (de) * 1958-03-18 1959-02-19 Erwin Buergel Fa Geraeuscharmes Kreissaegeblatt mit mehrfach geschlitzter Blattflaeche
FR2118263A5 (fr) * 1970-12-15 1972-07-28 Penciolelli Georges
DE7916756U1 (de) * 1979-06-09 1981-12-31 A. Ahlström Oy, 29600 Noormarkku Kreissägeblatt
US4794835A (en) * 1985-12-20 1989-01-03 Kanefusa Hamono Kogyo Company Limited Plate-like rotary body with vibration-suppressing characteristics and method of manufacturing same
DE4243480A1 (de) * 1992-12-22 1994-06-23 Sanshu Press Kogyo Kk Trockensägeblatt
EP1091142A1 (fr) * 1998-07-21 2001-04-11 Kanefusa Kabushiki Kaisha Plaque d'amortissement
DE102012004212A1 (de) * 2012-03-06 2013-09-12 Illinois Tool Works Inc. Scheibe zum Trennen und/oder Schleifen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3810138A1 (de) * 1987-12-23 1989-07-06 Fortuna Werke Maschf Ag Schleifscheibe
JP2999505B2 (ja) * 1990-04-03 2000-01-17 ノリタケダイヤ株式会社 乾式切断用ブレード
DE10033101A1 (de) * 2000-07-07 2002-01-17 Hilti Ag Scheibenförmiges Trennwerkzeug
DE10304162B3 (de) * 2003-02-03 2004-06-03 Hilti Ag Schneidblatt mit einer Geräuschdämpfungseinrichtung, insbesondere für handgeführte Trenngeräte
DE102011100725A1 (de) * 2011-05-06 2012-11-08 Dronco Ag Schleifscheibe
DE102012005085A1 (de) * 2012-03-13 2013-09-19 Dr. Müller Diamantmetall AG Werkzeug zum Bearbeiten von Materialien

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1050987B (de) * 1958-03-18 1959-02-19 Erwin Buergel Fa Geraeuscharmes Kreissaegeblatt mit mehrfach geschlitzter Blattflaeche
FR2118263A5 (fr) * 1970-12-15 1972-07-28 Penciolelli Georges
DE7916756U1 (de) * 1979-06-09 1981-12-31 A. Ahlström Oy, 29600 Noormarkku Kreissägeblatt
US4794835A (en) * 1985-12-20 1989-01-03 Kanefusa Hamono Kogyo Company Limited Plate-like rotary body with vibration-suppressing characteristics and method of manufacturing same
DE4243480A1 (de) * 1992-12-22 1994-06-23 Sanshu Press Kogyo Kk Trockensägeblatt
EP1091142A1 (fr) * 1998-07-21 2001-04-11 Kanefusa Kabushiki Kaisha Plaque d'amortissement
DE102012004212A1 (de) * 2012-03-06 2013-09-12 Illinois Tool Works Inc. Scheibe zum Trennen und/oder Schleifen

Also Published As

Publication number Publication date
DE102014103719A1 (de) 2015-09-24
DE202015101900U1 (de) 2015-05-29

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