EP2060363A2 - Dispositif de préparation de finissage mécanique de surfaces sphériques sur des pièces usinées à rotation symétrique - Google Patents

Dispositif de préparation de finissage mécanique de surfaces sphériques sur des pièces usinées à rotation symétrique Download PDF

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Publication number
EP2060363A2
EP2060363A2 EP20080019909 EP08019909A EP2060363A2 EP 2060363 A2 EP2060363 A2 EP 2060363A2 EP 20080019909 EP20080019909 EP 20080019909 EP 08019909 A EP08019909 A EP 08019909A EP 2060363 A2 EP2060363 A2 EP 2060363A2
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EP
European Patent Office
Prior art keywords
stroke
hollow shaft
shaft
oscillatory movements
drive
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Withdrawn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
EP20080019909
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German (de)
English (en)
Inventor
Horst Steinwender
Siegfried Hesse
Sebastian Reitmann
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.)
Thielenhaus Technologies GmbH
Original Assignee
Thielenhaus Technologies GmbH
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 Thielenhaus Technologies GmbH filed Critical Thielenhaus Technologies GmbH
Publication of EP2060363A2 publication Critical patent/EP2060363A2/fr
Withdrawn legal-status Critical Current

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    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • B24B19/06—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for grinding races, e.g. roller races
    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/04—Honing machines or devices; Accessories therefor designed for working external surfaces of revolution
    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/08—Honing tools
    • B24B33/081—Honing tools for external surfaces

Definitions

  • the invention relates to a device for mechanical finishing of spherical surfaces on rotationally symmetrical workpieces, in particular rolling bearing rings, having the features according to the preamble of claim 1.
  • the finishing of spherical raceways on rolling bearing rings, z. B. on roller bearing for spherical roller bearings, spherical roller bearings or large ball bearings requires a superposition of short-stroke oscillatory movements of a honing stone used as a finishing tool and long-stroke oscillatory movements.
  • the short stroke is also referred to as a cutting stroke and ensures material removal.
  • a superimposed long stroke is necessary so that the finishing tool completely captures the workpiece surface to be machined.
  • a device for mechanical finishing of spherical surfaces with a housing in which a hollow shaft is rotatably mounted, with a Oszillationswelle which is rotatably mounted in the hollow shaft and connected at one end to a tool carrier, with an oscillating drive, the oscillation shaft in offset short-stroke oscillatory movements, and with a force acting on the hollow shaft pivot drive, which generates long-stroke oscillatory movements of the hollow shaft.
  • the oscillation drive is arranged on a carrier connected to the hollow shaft, so that superimposed short-stroke oscillatory movements of the oscillation wave and long-stroke oscillatory movements of the hollow shaft.
  • the invention has for its object to provide an apparatus for mechanical finishing of spherical surfaces of rotationally symmetrical workpieces, which can be flexibly adapted to different finishing tasks.
  • the cutting stroke of the finishing tool and the long-stroke oscillatory movements of the finishing tool should be variable and independently variable. With the device, a multi-stage finish machining should be possible, in which the workpiece is machined in succession with different finishing stones in one setting.
  • the oscillation drive has an adjusting device with which the stroke of the short-stroke oscillatory movements is adjustable, and that an NC-controlled servomotor is provided as a pivot drive, of the short-stroke oscillatory movements produced independent long-stroke oscillatory movements of the hollow shaft.
  • Highly dynamic servo drives can be used as servomotor for the long-stroke oscillation movements. Suitable, for example, harmonic drive transmission with integrated NC drive.
  • the oscillation drive which displaces the oscillation shaft into short-stroke oscillatory movements, preferably has a rotary drive, a shaft driven by the rotary drive with an adjustable eccentric arrangement and a cooperating with the eccentric lever.
  • the lever is connected to the oscillation shaft and sets the oscillation wave in short-stroke oscillatory movements whose angle depends on the stroke of the eccentric arrangement.
  • the eccentric arrangement which allows a stepless adjustment of the eccentric stroke, preferably has an eccentric shaft and a sleeve surrounding the eccentric shaft, wherein the annular inner surface of the sleeve is offset eccentrically to the sleeve axis.
  • the eccentric axes can be adjusted to one another by a rotational movement of the eccentric shaft and fixedly clamped together by a locking device, for example a functional nut.
  • a locking device for example a functional nut.
  • On the sleeve and the eccentric shaft scaling can be provided for adjusting the Exzenterhubes.
  • the device according to the invention is characterized by a very compact construction and a low mass moment of inertia of the parts to be moved.
  • the construction according to the invention enables a cutting stroke with very high oscillation frequencies, which has a positive effect both on the cutting performance and on the workpiece quality. It is essential that the cutting stroke can be variably adapted to the respective finish task. Since the long-stroke oscillation movements can be changed very easily, the device is suitable for machining workpieces of different geometry with small batch sizes.
  • the device according to the invention allows different, respectively different modes of operation.
  • the device according to the invention can be used, for example, for finish machining by short stroke oscillation of a finishing stone, wherein the pivot drive acting on the hollow shaft is used to change the angle of attack of the held on the tool carrier finishing stone.
  • the pivot drive acting on the hollow shaft is used to change the angle of attack of the held on the tool carrier finishing stone.
  • An embodiment and operation of the device according to the invention provides that the pivot drive generates uniform oscillatory movements of the hollow shaft, wherein the pivot angle for the Oszillationsmotheren by a servo motor associated control is adapted to the workpiece surface to be machined so that with each pivotal movement held on the tool carrier finishing tool sweeps over the entire workpiece surface to be machined. Furthermore, there is the possibility that the pivot drive generates oscillatory movements about a reference position, the pivot angle is insufficient to edit the workpiece surface with this pivotal movement and that a servo motor associated control rotates the hollow shaft gradually after one or more long-stroke oscillatory movements in each case a new reference position until a finishing tool held on the tool carrier completely grips the workpiece surface to be machined.
  • the device according to the invention also allows a triple superimposition comprising short-stroke oscillatory movements of the oscillation wave, long-stroke oscillatory movements of the hollow shaft and a stepwise rotational movement of the hollow shaft in predetermined reference positions.
  • a triple superimposition comprising short-stroke oscillatory movements of the oscillation wave, long-stroke oscillatory movements of the hollow shaft and a stepwise rotational movement of the hollow shaft in predetermined reference positions.
  • the device according to the invention it is finally possible to process workpiece surfaces on an annular workpiece while maintaining the workpiece clamping successively with two or more different finishing stones.
  • at least two stone holders, each with a finishing stone as a finishing tool are arranged on the tool carrier, which can be brought by a rotation of the hollow shaft caused by the pivot drive in a processing position on the workpiece to be machined.
  • the common axis for short-stroke and long-stroke oscillatory movements is additionally used for a pivoting movement, which serves the tool change.
  • the rotary actuator performs a dual function. It not only generates the long-stroke oscillatory movements for the finish machining, but also causes a pivoting movement for the purpose of tool change.
  • the stone holders are expediently guided linearly movably on the tool carrier and acted upon in each case by a pressure device which generates the contact force of the finishing tool on the workpiece surface to be machined.
  • a pressure device cylinder / piston assemblies are suitable.
  • the Fig. 1 shows very schematically the principle realized according to the invention for the finish machining of spherically curved surfaces 1 on a rotationally symmetrical workpiece 2, for example, a roller bearing ring for a double-row spherical roller bearings.
  • the workpiece 2 has in the sectional view circular arcuate workpiece surfaces 1, which are each processed with a finishing stone as a finishing tool 3.
  • the annular workpiece 2 is fixed to a workpiece spindle 4 and is driven in rotation during finishing.
  • the finishing tool 3 is fixed to a tool carrier 5, which executes short-stroke oscillations 6 about a rotation axis 7.
  • the short-stroke oscillatory movements 6, which are also referred to as cutting stroke, ensure the material removal on the workpiece surface.
  • FIG. 2 and 3 show the basic structure of the device. These include a housing 9, in which a hollow shaft 10 is rotatably mounted, an oscillation shaft 11 which is rotatably mounted in the hollow shaft 10 and connected at one end to a tool carrier 5, an oscillating drive 12, which puts the oscillation shaft 11 in short-stroke oscillatory movements, and an acting on the hollow shaft 10 pivot drive 13, the long-stroke oscillatory movements of the hollow shaft 10 generates.
  • a pivot drive 13 is an NC-controlled Servomotor provided which causes the Thomashub independent long-stroke oscillatory movements of the hollow shaft 10.
  • the oscillating drive 12 is arranged on a carrier 14 connected to the hollow shaft 10 and is pivoted together with the latter during a rotational movement of the hollow shaft 10. It has an adjusting device 15, with which the stroke of the short-stroke oscillatory movements is adjustable and is formed in the embodiment as an eccentric drive.
  • the oscillating drive 12 has a rotary drive 16, a shaft driven by the rotary drive 16 with an adjustable eccentric arrangement 18 and a lever 19 cooperating with the eccentric arrangement 18.
  • the lever 19 is connected to the oscillation shaft 11 and sets the oscillation wave in short-stroke oscillatory movements whose angle depends on the stroke of the eccentric 18. Only schematically was in the Fig. 2 and 3 indicated that the eccentric 18 has an eccentric shaft 20 and a sleeve 21 surrounding the eccentric shaft 20.
  • the sleeve 21 is arranged on a shaft portion of the eccentric shaft 20, and has an annular inner surface 23 which is offset eccentrically to the rotation axis 22.
  • the assignment of the parts 20, 21 can be arranged so that the eccentricity of the two parts added or canceled each other. In this way, a continuous adjustment of the Exzenterhubes between a minimum and maximum value is possible.
  • scalings can be provided for adjusting the Exzenterhubes.
  • the pivot drive 13, which generates long-stroke oscillatory movements of the hollow shaft 10, has an NC-controlled servomotor. Preference is given to highly dynamic servo drives.
  • the hollow shaft 10 is driven via a belt of a harmonic drive with integrated NC drive.
  • a machining variant is characterized in that the pivot drive 13 generates uniform oscillatory movements of the hollow shaft 10 and the pivot angle ⁇ for the long-stroke oscillations by a control associated with the servo motor is adapted to the workpiece surface 1 to be machined so that with each pivotal movement held on the tool carrier finishing stone 3 passes over the entire workpiece surface 1 to be machined.
  • a control associated with the servo motor is adapted to the workpiece surface 1 to be machined so that with each pivotal movement held on the tool carrier finishing stone 3 passes over the entire workpiece surface 1 to be machined.
  • the hollow shaft 10 is gradually rotated further into a respective new reference position after one or more long-stroke oscillatory movements until the finishing stone 3 held on the tool carrier 5 has completely covered the workpiece surface to be machined. It is understood that this process can be repeated many times. There are three overlapping movements, namely short-stroke oscillatory movements, which are generated by the oscillation drive 12, a long-stroke oscillatory motion, which is generated by the pivot drive 13, and a stepwise further rotation of the hollow shaft over a larger angular range, which also causes of the pivot drive 13 becomes.
  • the device according to the invention also makes it possible to machine workpiece surfaces only by means of short-stroke oscillation movements and to use the pivot drive 13 acting on the hollow shaft 10 in order to realize specific angles of attack of the finishing tool 3.
  • the Fig. 4 and 5 If one assumes that at least two stone holder 24, each with a finishing stone or finishing tool 3, 3 'are arranged on the tool carrier 5, which can be brought by a caused with the pivot drive 13 rotational movement of the hollow shaft 10 in a processing position on the workpiece to be machined 2. After a workpiece surface 1 has been processed, the tool carrier 5 can be pivoted and the workpiece surface 1 can be reworked with another finishing stone 3 'in the manner described. The pivoting movement for the purpose of tool change is effected by acting on the hollow shaft 10 pivot drive 13. With the device according to the invention, it is therefore possible to process a workpiece 2 while maintaining its clamping successively with two or more different finishing stones.
  • the stone holders 24 are guided linearly movably on the tool carrier 5 in dovetail guides 25 and are each acted upon by a pressure device 26 which generates the pressing force of the finishing tool 3, 3 'on the workpiece surface 1 to be machined.
  • the pressure device 26 consists of a cylinder / piston arrangement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP20080019909 2007-11-15 2008-11-14 Dispositif de préparation de finissage mécanique de surfaces sphériques sur des pièces usinées à rotation symétrique Withdrawn EP2060363A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710054897 DE102007054897B4 (de) 2007-11-15 2007-11-15 Vorrichtung zur mechanischen Finishbearbeitung von sphärischen Flächen an rotationssymmetrischen Werkstücken

Publications (1)

Publication Number Publication Date
EP2060363A2 true EP2060363A2 (fr) 2009-05-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080019909 Withdrawn EP2060363A2 (fr) 2007-11-15 2008-11-14 Dispositif de préparation de finissage mécanique de surfaces sphériques sur des pièces usinées à rotation symétrique

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Country Link
EP (1) EP2060363A2 (fr)
DE (1) DE102007054897B4 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430965A (zh) * 2011-10-11 2012-05-02 洛阳Lyc轴承有限公司 第三代轮毂轴承内轴圈的磨削定位方法
CN102781625A (zh) * 2011-02-24 2012-11-14 日本精工株式会社 内外轮兼用超精加工盘
WO2015197448A1 (fr) * 2014-06-23 2015-12-30 Nagel Maschinen- Und Werkzeugfabrik Gmbh Procédé et dispositif servant à effectuer des finitions sur les surfaces périphériques de parties de pièces à usiner symétriques en rotation
CN109015330A (zh) * 2018-10-16 2018-12-18 宋江山 一种管体打磨机床
DE102019102137A1 (de) 2019-01-29 2020-07-30 Thielenhaus Technologies Gmbh Vorrichtung und Verfahren zur Finishbearbeitung einer gekrümmten Oberfläche eines Werkstückes

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010036470B4 (de) 2010-07-16 2018-04-26 Thielenhaus Technologies Gmbh Vorrichtung zum Honen von Laufflächen an Wälzlagerringen
CN102950521A (zh) * 2011-08-31 2013-03-06 上海通用轴承有限公司 轴承滚道加工设备及加工方法
DE102011087252B3 (de) * 2011-11-28 2013-01-17 Supfina Grieshaber Gmbh & Co. Kg Vorrichtung zur Finishbearbeitung eines insbesondere ringförmigen Werkstücks
DE102014102282B4 (de) * 2014-02-21 2019-11-14 Thielenhaus Technologies Gmbh Finishwerkzeugträger und Finisheinheit
DE102016000841A1 (de) * 2016-01-27 2017-07-27 J.G. WEISSER SöHNE GMBH & CO. KG Verfahren zur spanenden Bearbeitung eines Werkstücks, Werkzeugkopf für eine Drehmaschine sowie Drehmaschine
DE102019123338B4 (de) * 2019-08-30 2022-06-15 Schaeffler Technologies AG & Co. KG Vorrichtung und Verfahren zur spanenden Außenbearbeitung eines Werkstücks
DE102019129874A1 (de) 2019-11-06 2021-05-06 Schaeffler Technologies AG & Co. KG Honwerkzeug und Verfahren zur Bearbeitung eines Lagerteils

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004025375A (ja) 2002-06-26 2004-01-29 Daisei Co Ltd 超仕上げ盤

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004025375A (ja) 2002-06-26 2004-01-29 Daisei Co Ltd 超仕上げ盤

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102781625A (zh) * 2011-02-24 2012-11-14 日本精工株式会社 内外轮兼用超精加工盘
CN102781625B (zh) * 2011-02-24 2015-08-12 日本精工株式会社 内外轮兼用超精加工盘
CN102430965A (zh) * 2011-10-11 2012-05-02 洛阳Lyc轴承有限公司 第三代轮毂轴承内轴圈的磨削定位方法
WO2015197448A1 (fr) * 2014-06-23 2015-12-30 Nagel Maschinen- Und Werkzeugfabrik Gmbh Procédé et dispositif servant à effectuer des finitions sur les surfaces périphériques de parties de pièces à usiner symétriques en rotation
DE102014211937C5 (de) * 2014-06-23 2016-06-02 Nagel Maschinen- Und Werkzeugfabrik Gmbh Verfahren und Vorrichtung zur Finish-Bearbeitung von Umfangsflächen rotationssymmetrischer Werkstückabschnitte
EP3157708B1 (fr) 2014-06-23 2019-02-27 Nagel Maschinen- und Werkzeugfabrik GmbH Procédé et dispositif servant à effectuer des finitions sur les surfaces périphériques de parties de pièces à usiner symétriques en rotation
CN109015330A (zh) * 2018-10-16 2018-12-18 宋江山 一种管体打磨机床
DE102019102137A1 (de) 2019-01-29 2020-07-30 Thielenhaus Technologies Gmbh Vorrichtung und Verfahren zur Finishbearbeitung einer gekrümmten Oberfläche eines Werkstückes

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Publication number Publication date
DE102007054897A1 (de) 2009-05-20
DE102007054897B4 (de) 2010-05-20

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