EP3890923A1 - Dispositif de dressage et procédé de dressage d'un outil de rectification - Google Patents

Dispositif de dressage et procédé de dressage d'un outil de rectification

Info

Publication number
EP3890923A1
EP3890923A1 EP19817129.0A EP19817129A EP3890923A1 EP 3890923 A1 EP3890923 A1 EP 3890923A1 EP 19817129 A EP19817129 A EP 19817129A EP 3890923 A1 EP3890923 A1 EP 3890923A1
Authority
EP
European Patent Office
Prior art keywords
tool
rotation
tools
grinding
sharpening
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.)
Pending
Application number
EP19817129.0A
Other languages
German (de)
English (en)
Inventor
Stephan Woiwode
Gerhard Mahr
Thorsten Roth
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP3890923A1 publication Critical patent/EP3890923A1/fr
Pending legal-status Critical Current

Links

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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/04—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels
    • B24B53/053—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels using a rotary dressing tool
    • 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
    • B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/003—Devices or means for dressing or conditioning abrasive surfaces using at least two conditioning tools
    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
    • B24B53/062—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels using rotary dressing tools

Definitions

  • the invention relates to a dressing device formed for profiling and sharpening a grinding tool according to the preamble of claim 1. Furthermore, the invention relates to a method for dressing a grinding tool.
  • a generic dressing device is known for example from US 4,073,281 A.
  • a dressing roller and a sharpening roller are attached to a common spindle.
  • the dressing roller and the sharpening roller rotate about axes parallel to one another, both rollers being driven by means of a single belt. In this case there is no axial offset between the two rollers.
  • the devices according to US 4,073,281 A are said to be particularly suitable for processing grinding wheels made of cubic boron nitride (CBN).
  • US Pat. No. 4,259,940 A Another dressing device, which is also provided for the machining of CBN grinding wheels, is disclosed in US Pat. No. 4,259,940 A.
  • a truing wheel provided for dressing can rotate with a certain direction of rotation.
  • the device according to US 4,259,940 A includes a roll for finishing (dressing roll) which, if used for processing, rotates in the opposite direction.
  • the two processing tools, that is, the roller and the roller mentioned, are attached to one another on a common working spindle.
  • the invention is based on the object of specifying further developed, rational and diverse possibilities of machining grinding tools, in particular grinding wheels based on cubic boron nitride, compared to the prior art mentioned.
  • This object is achieved according to the invention by a dressing device with the features of claim 1.
  • the object is also achieved by a method for dressing a grinding tool according to claim 9.
  • embodiments and advantages of the invention explained in connection with the dressing method apply mutatis mutandis to the dressing device and vice versa.
  • the dressing device in a basic concept known per se comprises two rotatable tools, namely a profiling tool and a sharpening tool.
  • the tools have axes of rotation that are parallel to one another, including an identity of the axes of rotation.
  • the tools are offset from one another in the axial direction of the axes of rotation.
  • the profiling tool is adjustable relative to the sharpening tool, preferably being adjustable between these tools at least in the common axial direction of the tools.
  • the adjustability between the two tools can be used to either dress and sharpen the grinding wheel one after the other or at the same time - to use the profiling tool and the sharpening tool in different surface areas of the grinding tool.
  • the two tools that is to say the profiling tool and the sharpening tool, have a common axis of rotation, along which they can be adjusted relative to one another.
  • a rotationally fixed coupling between the two tools can be canceled or not possible from the beginning.
  • tool drives can be implemented which enable the speed of one tool to be varied in relation to the speed of the other tool.
  • each tool is driven by its own electric motor for this purpose. If the two tools of the dressing device have mutually parallel, not identical axes of rotation, these axes of rotation are preferably adjustable relative to one another.
  • the axes of rotation of the tools are in a common plane with the axis of rotation of the grinding tool in each operating state.
  • the distance between the axis of rotation of the profiling tool and the axis of rotation of the grinding tool and the distance between the sharpening tool and the axis of rotation of the grinding tool are preferably variable.
  • the axis of rotation of the profiling tool with the axis of rotation of the grinding tool is in a first plane
  • the axis of rotation of the sharpening tool with the axis of rotation of the grinding tool is in a second plane, with an acute angle, for example an angle of between the two planes less than 45 °, in particular an angle of less than 30 °, is included.
  • An adjustability between the axes of rotation of the profiling tool and the grinding tool is given, for example, by the fact that the two axes of rotation of the tools of the dressing device are displaceable within the relevant plane.
  • the two planes can be pivoted relative to one another, the axis of rotation of the grinding tool representing the pivot axis.
  • the sharpening tool of the dressing device has, for example, corundum as the cutting material.
  • the grinding tool to be machined preferably contains cubic boron nitride in a ceramic bond.
  • the method according to the invention generally comprises the processes of profiling and sharpening, both processes being carried out by the dressing device, which has the profiling tool and the sharpening tool, said tools being advanced and delivered relative to the grinding tool.
  • the feed direction includes a right angle with the feed direction. At least one of the feed and infeed sizes is adjusted in different ways during the process for the two tools.
  • the dressing device is particularly suitable for machining grinding tools for centerless continuous grinding.
  • the combination of profiling and sharpening provides the grinding system with a grinding tool at an early stage.
  • the dressing device according to the invention enables a drastic shortening or even elimination of the grinding away.
  • the process of sharpening by means of the integrated into the dressing which can be used variably, optionally at the same time with the profiling tool or independently of the profiling tool, uses sharpening components to be removed from the grinding tool. This increases the effective roughness of the grinding tool, which enables machining of a workpiece with low grinding forces.
  • Fig. 1 components of a dressing device and a to be machined
  • FIG. 2 shows the arrangement according to FIG. 1 in a perspective view
  • FIGS. 1 and 2 a second embodiment of a dressing device in views analogous to Figures 1 and 2, 5 and 6 a third embodiment of a dressing device in views analogous to FIGS. 1 and 2.
  • a grinding tool 3 is shown, which is made of cubic boron nitride (CBN) with a ceramic bond.
  • a dressing device 1 is used to dress the grinding tool 3, of which only two tools 4, 5, namely a profiling tool 4 and a sharpening tool 5, are shown.
  • the profiling tool 4 is rotatable about an axis of rotation RP, the sharpening tool 5 about an axis of rotation RSc.
  • the axis of rotation of the grinding tool 3 is marked with RA. All axes of rotation RA, RP, RSc are aligned parallel to one another in all exemplary embodiments and in all operating states.
  • the axes of rotation RP, RSc coincide geometrically.
  • the movement of the two tools 4, 5 takes place independently of one another.
  • Each tool 4, 5 of the dressing device 1 has its own electrical drive.
  • the tools 4, 5 can be displaced independently of one another along the common axis of rotation RP, RSc.
  • Grinding tool 3 is adjustable.
  • FIGS. 5 and 6 show an exemplary embodiment in which the tools 4, 5 can be rotated about rotational axes RP, RSc spaced apart from one another and can be moved independently of one another along these rotational axes RP, RSc.
  • Each axis of rotation RP, RSc of the dressing device 1 is adjustable relative to the axis of rotation RA of the grinding tool 3.
  • a first plane is defined by the axes of rotation RA, RP.
  • a second level is defined by the axes of rotation RA, RSc. Between these planes, which intersect in the axis of rotation RA, an acute angle is formed, which in the exemplary embodiment is less than 30 degrees.
  • the sharpening tool 5 contains corundum as the cutting material and can also be used for cleaning the

Abstract

L'invention concerne un procédé de dressage d'un outil de rectification (3), comprenant les opérations de profilage et d'affûtage, les deux opérations étant effectuées par un seul dispositif de dressage (1) qui possède deux outils rotatifs (4, 5), à savoir un outil de profilage (4) et un outil d'affûtage (5), qui sont avancés et approchés par rapport à l'outil de rectification (3). Au moins l'une des grandeurs d'avance et d'approche est ajustée de différentes manières au niveau des deux outils (4, 5) au cours du procédé.
EP19817129.0A 2018-12-05 2019-11-29 Dispositif de dressage et procédé de dressage d'un outil de rectification Pending EP3890923A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018130908.2A DE102018130908A1 (de) 2018-12-05 2018-12-05 Abrichtvorrichtung und Verfahren zum Abrichten eines Schleifwerkzeugs
PCT/DE2019/101024 WO2020114553A1 (fr) 2018-12-05 2019-11-29 Dispositif de dressage et procédé de dressage d'un outil de rectification

Publications (1)

Publication Number Publication Date
EP3890923A1 true EP3890923A1 (fr) 2021-10-13

Family

ID=68834911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19817129.0A Pending EP3890923A1 (fr) 2018-12-05 2019-11-29 Dispositif de dressage et procédé de dressage d'un outil de rectification

Country Status (7)

Country Link
US (1) US20220023994A1 (fr)
EP (1) EP3890923A1 (fr)
JP (1) JP7275271B2 (fr)
KR (1) KR20210097106A (fr)
CN (1) CN112912212A (fr)
DE (1) DE102018130908A1 (fr)
WO (1) WO2020114553A1 (fr)

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2162038A (en) * 1937-05-17 1939-06-13 Cincinnati Grinders Inc Grinding machine
US2482785A (en) * 1946-12-04 1949-09-27 Niles Bement Pond Co Threaded abrasive wheel dresser
GB1553511A (en) * 1975-09-29 1979-09-26 Asaeda T Truing and dressing apparatus for grinding whells
US4073281A (en) 1975-09-29 1978-02-14 Toyoda-Koki Kabushiki-Kaisha Truing and dressing apparatus for grinding wheels
JPS5537252A (en) 1978-09-05 1980-03-15 Toyoda Mach Works Ltd Wheel truing device of grinder
DE3035635C2 (de) * 1980-09-20 1982-08-12 Ernst Winter & Sohn ( GmbH & Co.), 2000 Hamburg Verfahren zum Abrichten von Schleifscheiben mit Diamant oder kubisch kristallinen Bornitrid
JPS61117065A (ja) * 1984-11-09 1986-06-04 Toyoda Mach Works Ltd 砥石修正装置
IT1218120B (it) * 1986-10-01 1990-04-12 Claudio Baldo Macchina molatrice e/o rettificatrice tangenziale
EP0328482B1 (fr) * 1988-02-12 1993-07-14 Reishauer Ag. Outil rotatif en forme de disque pour le profilage de vis de meulage cylindriques pour la rectification de roues dentées
JPH0295573A (ja) * 1988-09-29 1990-04-06 Toyoda Mach Works Ltd 砥石ドレッシング装置
EP0739684A1 (fr) * 1993-04-26 1996-10-30 Fuji Oozx Inc. Appareil de dressages des meules
JP2001071266A (ja) * 1999-09-03 2001-03-21 Nagase Integrex Co Ltd 回転砥石の目立て方法及び目立てドレッサを設けた研削盤
JP2001162530A (ja) * 1999-12-13 2001-06-19 Micron Seimitsu Kk 内研用小径砥石の成形方法、および、内研用小径砥石の成形装置
JP2004122251A (ja) * 2002-09-30 2004-04-22 Thk Co Ltd 研削盤の砥石ドレッシング方法及び装置
JP4647437B2 (ja) * 2005-08-29 2011-03-09 株式会社三井ハイテック 砥石ドレッサ装置
CN101695774A (zh) * 2009-10-21 2010-04-21 西安贝吉姆机床股份有限公司 成形砂轮磨齿机砂轮修整机构
DE102011102113A1 (de) * 2011-05-20 2012-11-22 Schaudt Mikrosa Gmbh Mehrscheiben-Schleifmaschine mit zumindest zwei Spindelsätzen
DE102011103216A1 (de) * 2011-06-01 2012-12-06 Liebherr-Verzahntechnik Gmbh Verfahren zum Abrichten eines Werkzeugs
DE102012001898B3 (de) * 2012-02-01 2013-04-25 Emag Holding Gmbh Doppelspindlige Schleifmaschine
JP6197567B2 (ja) * 2013-10-16 2017-09-20 株式会社ジェイテクト ツルーイング方法及びツルーイング装置
DE102015007023B3 (de) * 2015-05-30 2016-11-10 Emag Holding Gmbh Schleifmaschine

Also Published As

Publication number Publication date
JP7275271B2 (ja) 2023-05-17
JP2022510693A (ja) 2022-01-27
WO2020114553A1 (fr) 2020-06-11
CN112912212A (zh) 2021-06-04
US20220023994A1 (en) 2022-01-27
DE102018130908A1 (de) 2020-06-10
KR20210097106A (ko) 2021-08-06

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