EP2636482A1 - Système de traitement de pièce usinée et procédé de traitement très fin d'une pièce usinée - Google Patents

Système de traitement de pièce usinée et procédé de traitement très fin d'une pièce usinée Download PDF

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Publication number
EP2636482A1
EP2636482A1 EP12158434.6A EP12158434A EP2636482A1 EP 2636482 A1 EP2636482 A1 EP 2636482A1 EP 12158434 A EP12158434 A EP 12158434A EP 2636482 A1 EP2636482 A1 EP 2636482A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
belt
groove
shaped recess
machining system
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.)
Granted
Application number
EP12158434.6A
Other languages
German (de)
English (en)
Other versions
EP2636482B1 (fr
Inventor
Thomas Waidele
Simon Wolber
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.)
Supfina Grieshaber GmbH and Co KG
Original Assignee
Supfina Grieshaber GmbH 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 Supfina Grieshaber GmbH and Co KG filed Critical Supfina Grieshaber GmbH and Co KG
Priority to EP20120158434 priority Critical patent/EP2636482B1/fr
Publication of EP2636482A1 publication Critical patent/EP2636482A1/fr
Application granted granted Critical
Publication of EP2636482B1 publication Critical patent/EP2636482B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B24B19/022—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 helicoidal grooves
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/16—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape

Definitions

  • the invention relates to a workpiece processing system, comprising a workpiece with a workpiece outer side, in which at least one groove-shaped recess running around a workpiece axis is introduced, and comprising a superfine machining tool for micromachining the surface of the groove-shaped recess.
  • finishing stones In known workpiece machining systems, superfinishing tools in the form of finishing stones are used, which finish the surface of a groove-shaped depression of the workpiece. Such finishing stones are made of an abrasive material which is pressed against the surface of the groove-shaped depression.
  • the known workpiece machining systems allow high-quality machining of groove-shaped depressions, which serve for example as a raceway for rolling bearing body.
  • a highly accurate machining of the groove-shaped depressions is relatively time-consuming in the known workpiece machining systems.
  • a very accurate positioning of the workpiece relative to the surface of the groove-shaped depression is required.
  • only comparatively small average power can be achieved.
  • the present invention has the object to provide a workpiece machining system, with which a high production quality and a short processing time can be realized.
  • the superfinishing tool is in the form of a belt having an extending along the belt effective portion that the active portion has a matched to a recess profile of the groove-shaped depression profile and that the active portion along a along the groove-shaped Well extending contact surface is in contact with the surface of the groove-shaped depression.
  • a superfinishing tool in the form of a belt is provided.
  • a belt offers the possibility of deforming, at least within certain limits, and thus of adapting to the surface of the groove-shaped depression to be able to.
  • the flexibility of the belt also allows a reduction in the required positioning accuracy between the workpiece and the tool.
  • the belt has an (abrasive acting) effective portion, which has an active profile, which is adapted to a depression profile of the groove-shaped depression.
  • active profile and the depression profile are complementary to one another, so that, ideally, the surface of the groove-shaped depression can be machined over the entire width of the depression profile when the active section engages with the groove-shaped depression.
  • the active profile has smaller dimensions than the recess profile.
  • the effective portion of the belt is not only in contact with the surface of the groove-shaped depression along a profile line, as is the case with a flat finishing belt.
  • a flat finishing belt When a flat finishing belt is curved transversely to the belt direction, it can are no longer curved in a direction parallel to the tape direction.
  • a flat belt When a flat belt is curved in a direction parallel to the belt direction, it can not be curved in a direction transverse to the belt direction.
  • a flat band only a line contact to a multi-curved workpiece surface can be realized.
  • the active section is in contact with the surface of the groove-shaped depression along a contact surface extending along the groove-shaped recess, so that the belt is secured within a wrap angle in FIG Contact with the surface of the groove-shaped depression stands.
  • the above measures contribute to the fact that a surface contact between the superfinishing tool and the workpiece surface to be machined can be created so that higher cutting performance can be achieved compared to a line contact.
  • the looping between the belt and the workpiece and the resulting surface contact leads to an improvement in the roundness values and to a reduction in the waviness of the surface of the groove-shaped depression.
  • the workpiece machining system according to the invention is particularly suitable for workpieces in the form of threaded spindles or inner rings of a rolling bearing, or for outer rings of a rolling bearing.
  • a belt drive means be provided for driving the belt in a belt running direction.
  • a belt drive device may for example be formed by a belt drive wheel, which is driven by a motor.
  • a looping angle setting device is provided for setting a looping angle of the belt corresponding to the length of the contact surface about the workpiece axis. This allows easy control of Manufacturing parameters, which influence the roundness and / or waviness of the surface of the groove-shaped depression and manufacturing parameters, which have an influence on the cutting performance to be achieved.
  • a pressing device for adjusting a contact pressure with which the belt presses with its operative portion on the surface of the groove-shaped depression is provided. This also allows important production parameters to be influenced in a simple manner.
  • a deflection device is provided for deflecting the belt, whereby a simple specification of a guideway of the belt is made possible.
  • a Heileinstell Steiner is provided for adjusting the position of the deflection relative to the workpiece.
  • the position adjustment causes, for example, a change in the position of the deflection or parts of the deflection, whereby a wrap angle adjustment and / or a pressing device can be provided in a simple manner.
  • a rotary drive device is provided for the rotary drive of the workpiece about the workpiece axis. This enables a simple processing of the groove-shaped depression running around the workpiece axis and a tracking of the wrap angle along the groove-shaped depression.
  • a drive device for driving the workpiece or the belt in a direction parallel to the workpiece axis direction intended.
  • a drive device is particularly advantageous for workpieces in which a groove-shaped depression extends helically around the workpiece.
  • the workpiece is displaced in a direction parallel to the workpiece axis, matched to a rotational speed of the workpiece, so that the operative portion of the belt is held in continuous engagement with the helically extending groove-shaped recess.
  • the belt extends within a belt plane and if a pivoting device is provided for adjusting an angle between the belt plane and the workpiece axis.
  • This angle is for example at least approximately 90 ° in the event that the workpiece is an inner bearing of a roller bearing.
  • the angle around the pitch of the thread deviates from a right angle.
  • a particularly simple handling of the workpiece machining system results when the belt is in the form of an endless belt. This allows an endless circumferential guidance of the belt and in particular a waiver of supply rolls.
  • a surface bounded by the course of the belt within a belt plane is arranged outside the workpiece. This allows easy handling, setup and maintenance of the belt on the one hand and easy positioning of the workpiece on the other hand. But it is also possible to arrange the workpiece within said surface.
  • the belt has a supporting portion extending along the belt for supporting the knitting portion.
  • the support section made of a plastic material, for example an elastomer, in particular made of rubber or polyurethane.
  • the active section is made, for example, of CBN (cubic crystalline boron nitride), of aluminum oxide or silicon carbide.
  • the active section completely envelops the support section in the profile. But it is also possible that the active portion does not completely envelop the support portion and that the active portion between the support portion and the surface of the groove-shaped recess is arranged.
  • the belt in profile can have different cross sections.
  • the belt is circular in cross section, oval, elliptical, trapezoidal or rectangular.
  • the active section and the support section can also each have one of the abovementioned forms, which can also be combined with each other in pairs.
  • the invention further relates to a method for microfinishing a workpiece, which has a workpiece outer side, in which at least one groove-shaped recess running around a workpiece axis is introduced.
  • the present invention has the further object of specifying a method for microfinishing a workpiece, with which a high production quality and a short processing time can be realized.
  • the invention further relates to the use of a workpiece machining system described above for carrying out a method described above.
  • a workpiece processing system denoted overall by the reference numeral 10 in the drawing comprises a workpiece 12 and a superfinishing tool in the form of a belt 14.
  • the workpiece 12 extends along a workpiece axis 16 and has a workpiece outer side 18 extending around the workpiece axis 16.
  • the workpiece outer side 18 is preferably rotationally symmetrical, in particular cylindrical or conical.
  • groove-shaped recess 20 is introduced in the workpiece outer side 18 a circumferential around the workpiece axis 16. This recess is made for example by means of a thread whirling process.
  • the groove-shaped recess 20 extends endlessly circumferentially, or, as shown in the embodiment, helically along the outer side 18 of the workpiece 12th
  • the groove-shaped recess 20 has a surface 22, with a recess profile 24, for example, has a concave curvature.
  • the machining system 10 preferably comprises a rotary drive device 26, for example a drive motor, for rotationally driving the workpiece 12 about the workpiece axis 16 in a first direction of rotation 28 and / or in a second direction of rotation 30 opposite thereto (cf. FIG. 2 ).
  • a rotary drive device 26 for example a drive motor, for rotationally driving the workpiece 12 about the workpiece axis 16 in a first direction of rotation 28 and / or in a second direction of rotation 30 opposite thereto (cf. FIG. 2 ).
  • a drive device 32 for example in the form of a drive carriage, is preferably provided.
  • the belt 14 is in the form of an endless belt and can be driven by means of a belt drive device 34.
  • the belt drive device comprises, for example with the belt 14 in frictional contact drive wheel 36, the rotation of which defines a first belt running direction 38 or a second belt running direction 40 opposite thereto.
  • the drive wheel 36 may have a groove-shaped drive section 42.
  • the workpiece processing system 10 comprises a deflection device 44, which comprises at least one deflection roller 46 for deflecting the belt 14.
  • two deflection rollers 46, 48 are provided which are arranged on opposite sides with respect to a portion 12 of the belt 14 engaged with the workpiece 12.
  • the deflection roller 46 or the deflection rollers 46, 48 may have a groove-shaped deflection section 50.
  • the drive means 34 and the diverter 44 are disposed within the surface 54 and the workpiece 12 is disposed outboard of the surface 54.
  • a position adjustment device 56 is provided to set a distance between the deflection axes 60 of the deflection rollers 46 and 48. In this way, a relative position of the deflecting device 44 to the workpiece 12 can be changed. Further, a pressing device 58 is provided, by means of which a distance between the workpiece axis 16 and the deflection axis 60 of a deflection roller 46, 48 can be adjusted to the workpiece axis 16. As a result, the contact pressure of the belt 14 is adjusted.
  • the Lüeinstell issued 56 and the pressing device 58 together form a wrap angle adjustment means by which the size of a wrap angle 62 is adjustable, in which the belt 14 wraps around the workpiece 12 about the workpiece axis 16 around.
  • the wrap angle 62 may be, for example, between about 2 ° and about 90 °, preferably between about 5 ° and about 45 °.
  • a pivoting device 66 may be provided which, for example, pivots the workpiece 16 or the belt 14 together with the drive device 34 and the deflection device 44.
  • the belt 14 has an operative portion 68 which is provided on the outside of the belt 14 and consists of an abrasive material.
  • the active portion 68 is preferably held on a support portion 70 which is made of, for example, an elastomer.
  • the active section 68 has an active profile 72 (cf. FIGS. 4 to 7 ), which is complementary to the recess profile 24 of the groove-shaped recess 20 is formed.
  • the active portion 68 is within the wrap angle 62 along the groove-shaped recess 20 seen within a contact surface 74 (see FIG. 2 ) in contact with the surface 22 of the groove-shaped recess 20.
  • the workpiece For finishing machining of the surface 22, the workpiece is set in rotary motion by means of the rotary drive device 26. At the same time, the workpiece 12 is displaced parallel to the workpiece axis 16 by means of the drive device 32. Meanwhile, the belt 14 is driven in rotation by means of the belt drive means 34, so that the groove-shaped recess 20 is machined finish along its entire circumferential length. During the entire finishing process of the groove-shaped recess 20, the operative portion 68 of the belt 14 is in contact via the (displacing) contact surface 74.
  • the workpiece processing system 10 enables highly accurate and rapid finish machining of the surface 22 of the groove-like recess 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP20120158434 2012-03-07 2012-03-07 Système de traitement de pièce usinée et procédé de traitement très fin d'une pièce usinée Active EP2636482B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20120158434 EP2636482B1 (fr) 2012-03-07 2012-03-07 Système de traitement de pièce usinée et procédé de traitement très fin d'une pièce usinée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120158434 EP2636482B1 (fr) 2012-03-07 2012-03-07 Système de traitement de pièce usinée et procédé de traitement très fin d'une pièce usinée

Publications (2)

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EP2636482A1 true EP2636482A1 (fr) 2013-09-11
EP2636482B1 EP2636482B1 (fr) 2014-07-02

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014206057A1 (de) 2014-03-31 2015-10-01 Supfina Grieshaber Gmbh & Co. Kg Werkstückbearbeitungssystem und Verfahren zum spanabhebenden Bearbeiten eines Werkstückes
JP2016074058A (ja) * 2014-10-06 2016-05-12 株式会社サンシン ボールねじ研磨方法及びその装置
JP2017121689A (ja) * 2016-01-08 2017-07-13 株式会社サンシン ボールねじ研磨方法及びその装置
CN111890190A (zh) * 2020-07-22 2020-11-06 长沙湖航冶金设备有限公司 一种螺杆泵螺杆加工用车床
CN113510557A (zh) * 2021-04-22 2021-10-19 江西奥夫科压缩机有限公司 一种星轮加工装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4333734A1 (de) * 1993-10-05 1995-04-06 Frank Dr Ing Hentschel Vorrichtung zum konturbündigen Abschleifen von Überhöhungen oder Ausschleifen von Defekten in Form kantenfreier Schleifgeometrien
DE19615946A1 (de) * 1995-12-22 1997-06-26 Allweiler Ag Verfahren und Vorrichtung zum spanabhebenden Bearbeiten eines Werkstückes
US20090170402A1 (en) * 2007-12-28 2009-07-02 Hon Hai Precision Industry Co., Ltd. Apparatus and method for grinding threaded portion of workpiece

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4333734A1 (de) * 1993-10-05 1995-04-06 Frank Dr Ing Hentschel Vorrichtung zum konturbündigen Abschleifen von Überhöhungen oder Ausschleifen von Defekten in Form kantenfreier Schleifgeometrien
DE19615946A1 (de) * 1995-12-22 1997-06-26 Allweiler Ag Verfahren und Vorrichtung zum spanabhebenden Bearbeiten eines Werkstückes
US20090170402A1 (en) * 2007-12-28 2009-07-02 Hon Hai Precision Industry Co., Ltd. Apparatus and method for grinding threaded portion of workpiece

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014206057A1 (de) 2014-03-31 2015-10-01 Supfina Grieshaber Gmbh & Co. Kg Werkstückbearbeitungssystem und Verfahren zum spanabhebenden Bearbeiten eines Werkstückes
JP2016074058A (ja) * 2014-10-06 2016-05-12 株式会社サンシン ボールねじ研磨方法及びその装置
JP2017121689A (ja) * 2016-01-08 2017-07-13 株式会社サンシン ボールねじ研磨方法及びその装置
CN111890190A (zh) * 2020-07-22 2020-11-06 长沙湖航冶金设备有限公司 一种螺杆泵螺杆加工用车床
CN113510557A (zh) * 2021-04-22 2021-10-19 江西奥夫科压缩机有限公司 一种星轮加工装置
CN113510557B (zh) * 2021-04-22 2023-03-10 江西奥夫科压缩机有限公司 一种星轮加工装置

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