EP3159104A1 - Vorrichtung zum abrichten einer schleifscheibe - Google Patents

Vorrichtung zum abrichten einer schleifscheibe Download PDF

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Publication number
EP3159104A1
EP3159104A1 EP15190814.2A EP15190814A EP3159104A1 EP 3159104 A1 EP3159104 A1 EP 3159104A1 EP 15190814 A EP15190814 A EP 15190814A EP 3159104 A1 EP3159104 A1 EP 3159104A1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
dressing
monitoring
actuator
dressing 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Withdrawn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
EP15190814.2A
Other languages
English (en)
French (fr)
Inventor
Bruno BARBOSA DE OLIVEIRA FERREIRA SALLES
Eraldo JANNONE DA SILVA
Joao Fernando G. DE OLIVEIRA
Alex CAMILLI BOTTENE
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.)
Universidade de Sao Paulo USP
ThyssenKrupp Metalurgica Campo Limpo Ltda
ThyssenKrupp AG
Original Assignee
Universidade de Sao Paulo USP
ThyssenKrupp Metalurgica Campo Limpo Ltda
ThyssenKrupp 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 Universidade de Sao Paulo USP, ThyssenKrupp Metalurgica Campo Limpo Ltda, ThyssenKrupp AG filed Critical Universidade de Sao Paulo USP
Priority to EP15190814.2A priority Critical patent/EP3159104A1/de
Priority to BR112018007943A priority patent/BR112018007943A2/pt
Priority to US15/770,107 priority patent/US20180311789A1/en
Priority to PCT/EP2016/074883 priority patent/WO2017067884A1/en
Priority to CN201680060260.5A priority patent/CN108430698A/zh
Publication of EP3159104A1 publication Critical patent/EP3159104A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B24B53/08—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/003—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving acoustic means
    • 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
    • B24B53/005—Positioning devices for 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
    • B24B53/04—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels

Definitions

  • the present invention refers to an apparatus for dressing a grinding wheel and a method for controlling an apparatus for dressing a grinding wheel.
  • EP 0 876 875 A1 discloses a dressing apparatus having a CNC-control system.
  • the dressing apparatus has a tool holder for accommodating a dressing tool, a CNC-controllable drive and a guide for moving the tool holder in such a manner, that the cutting position is movable in directions of at least two axes of a coordinate system.
  • This dressing apparatus is used for the dressing of grinding wheels: Such grinding wheels are used for grinding several kinds of products.
  • the quality of the created texture in particular deviates from the intended texture; improvements in the quality of the created texture are desirable.
  • the invention has the object to create a texture of high quality on the surface of grinding wheels.
  • the invention provides an apparatus for dressing a grinding wheel mounted thereon by creating structures on the surface of a, in particular cylindrical, grinding surface of the grinding wheel, the apparatus comprising:
  • the invention provides the possibility to control the synchronisation between the circumferential position of a grinding wheel and the position of the dressing tool.
  • the actuator may be a piezoelectric actuator, comprising a dressing tool holder associated in its free extremity.
  • a linear actuation of the actuator provides the contact between the dressing tool and the grinding wheel surface or a variation of the dressing depth.
  • a contact between the dressing tool and the grinding wheel must be present to create the intended structures on the surface of the grinding wheel. Since the actuation of the actuator and thus the position of the tool is controlled as a function of the monitored structure and the monitored circumferential position and/or rotary speed, the structures can be created accurately on the predetermined position on the surface of the grinding wheel.
  • a quality control of the surface created on the grinding wheel surface is given by the correction of the rotation and by control of the dressing tool feed. This includes the possibility of mapping of the obtained texture for quality assurance.
  • the creation of the structures thus depends on the circumferential position of the grinding wheel.
  • the means for monitoring a circumferential position and/or the rotary speed of the grinding wheel can be a magnetic sensor, in particular a hall-sensor. It is immaterial whether the sensor actually measures the rotary speed or the circumferential position over time, since the rotary speed can be calculated by differentiating the circumferential position and the circumferential position can be calculated by integrating the rotary speed.
  • the sensor can be an inductive, capacitive, magnetic, photoelectrical or optical rotary speed or circumferential position sensor.
  • an analysing unit adapted to reconstruct a structure created on the surface of the grinding wheel, based on the information provided by the means for monitoring an individual structure and the means for monitoring a circumferential position and/or the rotary speed of the grinding wheel.
  • Said means use a synchronism reading signal which is provided by said means for monitoring a circumferential position and/or the speed. Additionally, the synchronism reading signal is used to generate and amplify an image of the created structure.
  • the means for monitoring an individual structure are adapted to monitor the individual structure at the instant moment during creation of this respective structure.
  • This allows a real time controlling of the actuator, since deviations at the time of creation can be immediately recognized and corrected.
  • the tool actuation can thus be coordinated by the feedback, which is provided by said means at the instant moment during creation, thus correcting of errors and closer results of the initially desired structures can be obtained.
  • the sensor for monitoring the structure can send the obtained signal to a structure representation system in real time.
  • the structure reconstructed by the tool can be reconstructed based on historical data.
  • the means for monitoring the structure comprise an acoustic sensor for monitoring the noise, which is generated during creation of the respective structure, the acoustic sensor is in particular attached to the dressing tool and/or the dressing tool holder.
  • This sensor records the noise, comprising in particular ultrasonic sound, which is generated when the tool immerses into the surface of the grinding wheel.
  • the recorded noise is thus a real time representation of the structure, created at the time of recording.
  • the recorded noise can be correlated to details of structures which are deposited in a database. By correlating the recorded noise and thus the obtained structure with the monitored circumferential position, the position of the created structure can be observed and monitored.
  • the means for controlling the actuator comprise numerical control means, enabling the input, compilation and transmission of information of machine commands without the intervention of an operator.
  • the apparatus comprises further means for comparing the monitored structure with a given predetermined structure and based on the result of the comparison adjusting at least one control pulse for controlling the actuator of the dressing tool and/or a motor for driving the grinding wheel.
  • Said means can be integrated in the means for controlling the actuator.
  • the objective is further solved by a method for controlling an apparatus as already described.
  • the method comprises the following steps:
  • FIG. 1 show a block diagram of an apparatus according to the invention.
  • the apparatus 1 comprises a grinding wheel support 14 for rotatably supporting a grinding wheel 2 to be dressed within the apparatus 1.
  • a motor 20 drives the grinding wheel 2 into rotation.
  • a magnetic circumferential position sensor 8 is provided to monitor the actual circumferential position 19 of grinding wheel 2. By differentiating the several monitored circumferential position values a rotary speed of the grinding wheel is obtained.
  • a dressing tool 4 comprise a diamond tip 5, which during the dressing process gets in contact with the surface 3 of the grinding wheel 2.
  • the dressing tool 4 is supported by a dressing tool holder 6.
  • the position of the dressing tool holder 6 can be manipulated by an actuator 7 in various directions. In particular by varying the position of the dressing tool holder 6 in x-direction, the depth of immersion of the diamond tip 5 into the surface 3 of the grinding wheel 2 is adjusted.
  • a control unit 10 provides control pulses 16 for the dressing tool actuator 7.
  • the control unit 10 is provided with data concerning the predetermined surface 3 P , which has to be created on the grinding wheel 2.
  • Several predetermined structures 11 are provided within these data. Synchronization with the actual circumferential position of the grinding wheel 2 is provided by the circumferential position signal 19 of the grinding wheel 2.
  • An acoustic sensor 13 is provided for recording noise 18 occurring during immersion of the diamond tip 5 into the surface 3. Based on the immersion depth, the force, which is applied on the tip 5, the duration of the immersion and the area of the immersion, noises of different spectra 18 are generated. So when different structures are created on the surface noises of different frequencies and volumes, subsequently summarized under the term noise spectra 18, occur.
  • a library of different noise spectra 18 is deposited in a database 15, along with details of structures 12 assigned thereto.
  • a structure 12 can be determined, which is similar to the structure which was created during the recording of the respective noise 18. This determination is performed by an analysing unit 9, which has access to the data base 15. As a result the analysing unit 9 establishes an observed surface image 3 O comprising the structures 12 as monitored.
  • FIG. 1 shows in the observed surface 3 O a structure 12', which deviates from the predetermined structures 11. This indicates an undue wearout of the dressing tool 4.
  • This wearout can be compensated by a respective change in the controlling of the actuator 7.
  • the loss of diamond particles at the tip 5 can be compensated by an increased feed rate of the actuator 7 in x-direction.
  • the apparatus and method according to the present invention provides the possibility of adapting the feed rate within a control circuit in real-time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP15190814.2A 2015-10-21 2015-10-21 Vorrichtung zum abrichten einer schleifscheibe Withdrawn EP3159104A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP15190814.2A EP3159104A1 (de) 2015-10-21 2015-10-21 Vorrichtung zum abrichten einer schleifscheibe
BR112018007943A BR112018007943A2 (pt) 2015-10-21 2016-10-17 aparelho para cobertura de uma roda de polimento, e método de controle de aparelho para cobertura de uma roda de polimento
US15/770,107 US20180311789A1 (en) 2015-10-21 2016-10-17 An apparatus for dressing a grinding wheel
PCT/EP2016/074883 WO2017067884A1 (en) 2015-10-21 2016-10-17 An apparatus for dressing a grinding wheel
CN201680060260.5A CN108430698A (zh) 2015-10-21 2016-10-17 用于处理磨轮的设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15190814.2A EP3159104A1 (de) 2015-10-21 2015-10-21 Vorrichtung zum abrichten einer schleifscheibe

Publications (1)

Publication Number Publication Date
EP3159104A1 true EP3159104A1 (de) 2017-04-26

Family

ID=54359978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15190814.2A Withdrawn EP3159104A1 (de) 2015-10-21 2015-10-21 Vorrichtung zum abrichten einer schleifscheibe

Country Status (5)

Country Link
US (1) US20180311789A1 (de)
EP (1) EP3159104A1 (de)
CN (1) CN108430698A (de)
BR (1) BR112018007943A2 (de)
WO (1) WO2017067884A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11577365B2 (en) * 2019-04-05 2023-02-14 Honda Motor Co., Ltd. Systems and methods of processing a rotatable assembly
US11633825B2 (en) 2020-02-06 2023-04-25 Fives Landis Corp. Acoustic crankpin location detection

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0876875A1 (de) 1997-04-29 1998-11-11 Albert Geuzinge Abrichten von Schleifscheiben
JP2007175815A (ja) * 2005-12-28 2007-07-12 Jtekt Corp 砥石車の修正方法及び修正装置
JP2007260880A (ja) * 2006-03-30 2007-10-11 Jtekt Corp 砥石車のツルーイング方法及び研削盤
EP2801441A1 (de) * 2013-05-07 2014-11-12 Jtekt Corporation Schleifmaschine
US20150258659A1 (en) * 2014-03-17 2015-09-17 Jtekt Corporation Grinding wheel truing method and grinding machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103273425A (zh) * 2013-05-14 2013-09-04 东华大学 一种cbn砂轮轨迹修整装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0876875A1 (de) 1997-04-29 1998-11-11 Albert Geuzinge Abrichten von Schleifscheiben
JP2007175815A (ja) * 2005-12-28 2007-07-12 Jtekt Corp 砥石車の修正方法及び修正装置
JP2007260880A (ja) * 2006-03-30 2007-10-11 Jtekt Corp 砥石車のツルーイング方法及び研削盤
EP2801441A1 (de) * 2013-05-07 2014-11-12 Jtekt Corporation Schleifmaschine
US20150258659A1 (en) * 2014-03-17 2015-09-17 Jtekt Corporation Grinding wheel truing method and grinding machine

Also Published As

Publication number Publication date
CN108430698A (zh) 2018-08-21
US20180311789A1 (en) 2018-11-01
BR112018007943A2 (pt) 2018-10-30
WO2017067884A1 (en) 2017-04-27

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