US20220023994A1 - Dressing device and method for dressing a grinding tool - Google Patents

Dressing device and method for dressing a grinding tool Download PDF

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Publication number
US20220023994A1
US20220023994A1 US17/296,263 US201917296263A US2022023994A1 US 20220023994 A1 US20220023994 A1 US 20220023994A1 US 201917296263 A US201917296263 A US 201917296263A US 2022023994 A1 US2022023994 A1 US 2022023994A1
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US
United States
Prior art keywords
tool
rotation
sharpening
rotatable
profiling
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Pending
Application number
US17/296,263
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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
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Schaeffler Technologies AG and Co KG
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Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Mahr, Gerhard, Woiwode, Stephan, Roth, Thorsten
Publication of US20220023994A1 publication Critical patent/US20220023994A1/en
Pending 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
    • 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
    • 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
    • B24B53/04—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
    • 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 disclosure relates to a dressing device designed for profiling and sharpening a grinding tool.
  • the disclosure further relates to a method for dressing a grinding tool.
  • a dressing device of the generic type is known from U.S. Pat. No. 4,073,281 A, for example.
  • a dressing roller and a sharpening roller are attached to a common spindle.
  • the dressing roller and the sharpening roller rotate about mutually parallel axes, both rollers being driven by means of a single belt. In this case, no axial offset is provided between the two rollers.
  • the devices according to U.S. Pat. No. 4,073,281 A are suitable for machining grinding wheels made of cubic boron nitride (CBN).
  • a further dressing device which is also provided for machining CBN grinding wheels, is disclosed in U.S. Pat. No. 4,259,940 A.
  • a roller provided for dressing can hereby rotate with a certain direction of rotation.
  • the device according to U.S. Pat. No. 4,259,940 A comprises a roller for finishing (dressing roll), which rotates in the opposite direction if it is used for processing.
  • the two processing tools i.e., said roller and said roll, are fastened next to one another on a common work spindle.
  • the dressing device comprises two rotatable tools, namely a profiling tool and a sharpening tool.
  • the tools have axes of rotation that are parallel to one another, which also includes 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 can be set relative to the sharpening tool. There may be an adjustability between these tools at least in the common axial direction of the tools.
  • the adjustability between the two tools can be used either to dress and sharpen the grinding wheel in succession or to use the profiling tool and the sharpening tool simultaneously—in different surface areas of the grinding tool.
  • the two tools i.e., the profiling tool and the sharpening tool
  • a non-rotatable coupling between the two tools can be released or could not be provided from the start. For example, this enables one of the tools to be driven while the other tool is at a standstill.
  • tool drives can be implemented to allow 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 non-identical axes of rotation that are parallel to one another, then these axes of rotation can be set with respect to one another.
  • the axes of rotation of the tools lie in a common plane with the axis of rotation of the grinding tool in each operating state.
  • both 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 may be variable.
  • the axis of rotation of the profiling tool lies in a first plane with the axis of rotation of the grinding tool
  • the axis of rotation of the sharpening tool lies in a second plane with the axis of rotation of the grinding tool.
  • An acute angle is enclosed between the two planes, for example, an angle of less than 45°, in particular an angle of less than 30°.
  • An adjustability between the axes of rotation of the profiling tool and the grinding tool is provided, for example, in that the two axes of rotation of the tools of the dressing device are displaceable within the relevant plane. It is also possible to implement embodiments in which, alternatively or in addition, the two planes are pivotable relative to one another, wherein the axis of rotation of the grinding tool represents the pivot axis.
  • the sharpening tool of the dressing device has, for example, corundum as a cutting material.
  • the grinding tool to be processed may contain cubic boron nitride in a ceramic bond.
  • the method according to the disclosure generally includes the processes of profiling and sharpening, both processes being carried out by the dressing device which has the profiling tool and the sharpening tool.
  • the tools are fed and advanced relative to the grinding tool.
  • the feed direction forms a right angle with the advancement direction. At least one of the variables of feed and advancement is set differently in the case of the two tools.
  • the dressing device may be suitable for machining grinding tools for centerless throughfeed grinding.
  • the combination of profiling and sharpening provides the grinding system with a sharpenable tool at an early stage.
  • the dressing device according to the disclosure allows for a drastic shortening or even omission of the free grinding.
  • the resulting process of sharpening by means of the variable sharpening tool integrated into the dressing, used simultaneously with the profiling tool or independently of the profiling tool, mainly removes bond components from the grinding tool. This increases the effective roughness depth of the grinding tool, which allows for a workpiece to be machined with low grinding forces.
  • FIG. 1 shows components of a dressing device as well as a grinding tool to be processed in plan view
  • FIG. 2 shows the arrangement according to FIG. 1 in a perspective view
  • FIGS. 3 and 4 show a second exemplary embodiment of a dressing device in views analogous to FIGS. 1 and 2 ,
  • FIGS. 5 and 6 show a third exemplary 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.
  • CBN cubic boron nitride
  • a dressing device 1 is used, of which only two tools 4 , 5 are shown, namely a profiling tool 4 and a sharpening tool 5 .
  • the profiling tool 4 is rotatable about an axis of rotation RP; the sharpening tool 5 is rotatable about an axis of rotation RSc.
  • the axis of rotation of the grinding tool 3 is denoted by 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 two tools 4 , 5 are moved here independently of one another.
  • Each tool 4 , 5 of the dressing device 1 has its own electric drive.
  • the tools 4 , 5 are displaceable independently of one another along the common axis of rotation RP, RSc.
  • the distance between the axis of rotation RP, RSc of the tools 4 , 5 and the axis of rotation RA of the grinding tool 3 can be set.
  • one of the tools 4 , 5 may be used for machining the grinding tool 3 , while the other tool 5 , 4 remains in a waiting position.
  • the axes of rotation RP, RSc are displacable parallel to one another. In the configuration according to FIGS. 3 and 4 , the axes of rotation RP, RSc coincide. Based on this configuration, it is possible to move only one of the two tools 4 , 5 onto the grinding tool 3 in the radial direction of the axis of rotation RA. If the relevant tool 4 , 5 is then moved in the longitudinal direction of the rotational axes RP, RSc, the other tool 5 , 4 also performs this movement in the axial direction, and can remain out of engagement with the grinding tool 3 .
  • FIGS. 5 and 6 show an exemplary embodiment in which the tools 4 , 5 are rotatable about spaced apart axes of rotation RP, RSc and are movable independently of one another along these axes of rotation RP, RSc.
  • Each axis of rotation RP, RSc of the dressing device 1 can be set with respect 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 plane is defined by the axes of rotation RA, RSc.
  • An acute angle is formed between these planes, which intersect in the axis of rotation RA, which in the exemplary embodiment is less than 30 degrees.
  • the sharpening tool 5 contains corundum as a cutting material and can also be used to clean the grinding tool 3 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
US17/296,263 2018-12-05 2019-11-29 Dressing device and method for dressing a grinding tool Pending US20220023994A1 (en)

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 (de) 2018-12-05 2019-11-29 Abrichtvorrichtung und verfahren zum abrichten eines schleifwerkzeugs

Publications (1)

Publication Number Publication Date
US20220023994A1 true US20220023994A1 (en) 2022-01-27

Family

ID=68834911

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/296,263 Pending US20220023994A1 (en) 2018-12-05 2019-11-29 Dressing device and method for dressing a grinding tool

Country Status (7)

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

Citations (6)

* 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
US4073281A (en) * 1975-09-29 1978-02-14 Toyoda-Koki Kabushiki-Kaisha Truing and dressing apparatus for grinding wheels
US4993194A (en) * 1988-02-12 1991-02-19 Reishauer Ag Grinding disks for profiling cylindrical worms
US5044126A (en) * 1986-10-01 1991-09-03 Rotrafer S.P.A. Tangential grinding machine
US20120309271A1 (en) * 2011-06-01 2012-12-06 Liebherr-Verzahntechnik Gmbh Method for Dressing a Tool
US20160346894A1 (en) * 2015-05-30 2016-12-01 Emag Holding Gmbh Dual-spindle grinding machine

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
JPH0295573A (ja) * 1988-09-29 1990-04-06 Toyoda Mach Works Ltd 砥石ドレッシング装置
EP0626235A3 (de) * 1993-04-26 1995-01-25 Fuji Valve Spitzenlose Schleifmaschine und Abrichtvorrichtung für Schleifscheibe.
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
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

Patent Citations (6)

* 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
US4073281A (en) * 1975-09-29 1978-02-14 Toyoda-Koki Kabushiki-Kaisha Truing and dressing apparatus for grinding wheels
US5044126A (en) * 1986-10-01 1991-09-03 Rotrafer S.P.A. Tangential grinding machine
US4993194A (en) * 1988-02-12 1991-02-19 Reishauer Ag Grinding disks for profiling cylindrical worms
US20120309271A1 (en) * 2011-06-01 2012-12-06 Liebherr-Verzahntechnik Gmbh Method for Dressing a Tool
US20160346894A1 (en) * 2015-05-30 2016-12-01 Emag Holding Gmbh Dual-spindle grinding machine

Also Published As

Publication number Publication date
KR20210097106A (ko) 2021-08-06
CN112912212A (zh) 2021-06-04
JP2022510693A (ja) 2022-01-27
EP3890923A1 (de) 2021-10-13
JP7275271B2 (ja) 2023-05-17
DE102018130908A1 (de) 2020-06-10
WO2020114553A1 (de) 2020-06-11

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