EP2636482B1 - 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
EP2636482B1
EP2636482B1 EP20120158434 EP12158434A EP2636482B1 EP 2636482 B1 EP2636482 B1 EP 2636482B1 EP 20120158434 EP20120158434 EP 20120158434 EP 12158434 A EP12158434 A EP 12158434A EP 2636482 B1 EP2636482 B1 EP 2636482B1
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EP
European Patent Office
Prior art keywords
workpiece
belt
groove
processing system
recited
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.)
Active
Application number
EP20120158434
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German (de)
English (en)
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EP2636482A1 (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
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Supfina Grieshaber GmbH and Co KG
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Priority to EP20120158434 priority Critical patent/EP2636482B1/fr
Publication of EP2636482A1 publication Critical patent/EP2636482A1/fr
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Publication of EP2636482B1 publication Critical patent/EP2636482B1/fr
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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
    • B24B19/022—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 having the features of the preamble of patent claim 1.
  • 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.
  • a sanding machine with a compliant cotton abrasive loop having a coating of abrasive material is known.
  • Other sanding belts are from the DE 196 15 946 A1 and the DE 43 33 734 A1 known.
  • the present invention has the object, a workpiece processing system to create, with which a high production quality and a short processing time can be realized.
  • a superfinishing tool in the form of a belt is provided.
  • a belt offers the possibility of being able to deform, at least within certain limits, and thus of being able to adapt to the surface of the groove-shaped depression.
  • 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 no longer curved in a direction parallel to the tape direction become.
  • 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 operative portion is in contact with the surface of the groove-shaped recess along a contact surface extending along the groove-shaped recess so that the belt is in contact with the surface of the groove-shaped recess within a wrap angle.
  • 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 is 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 that affect the roundness and / or waviness of the surface of the groove-shaped depression and manufacturing parameters that affect 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 Heileinstellinnate is provided for adjusting the position of the deflection relative to the workpiece.
  • the Lüeinstellinnate causes, for example, a change in the position of the deflecting device or parts of the deflecting device, thereby easily a wrap angle adjustment and / or a pressing device can be provided.
  • 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 is provided.
  • Such 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 support portion extending along the belt for supporting the knuckle portion.
  • This has the advantage that the working portion can be optimized with regard to its abrasive effect and the support portion in view of a desired flexibility and deformability of the belt.
  • the support portion is 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. This makes it possible to use the support portion for guiding, driving and / or deflection of the belt and the provided for guiding, driving and / or deflection of the belt components, such as guide rollers, drive rollers and / or pulleys, not with the To act on abrasive material of the effective section.
  • 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. In this way, a relative position of the deflecting device 44 to the workpiece 12 can be changed.
  • 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)

Claims (14)

  1. Système d'usinage de pièce (10), comprenant une pièce (12) ayant une surface extérieure de pièce (18) dans laquelle est ménagé au moins un creux en forme de cannelure (20) qui s'étend autour d'un axe de pièce (16), et comprenant un outil de superfinition destiné à superfinir la surface (22) du creux en forme de cannelure (20), ledit outil de superfinition étant réalisé sous forme d'une courroie (14) qui présente un tronçon actif (68) qui s'étend le long de ladite courroie (14) et qui est en contact, le long d'une surface de contact (74) s'étendant le long dudit creux en forme de cannelure (20), avec la surface (22) du creux en forme de cannelure (20), caractérisé par le fait que ledit tronçon actif (68) présente un profil efficace (72) qui est accordé à un profil de creux (24) du creux en forme de cannelure (20), que le profil efficace (72) accordé au profil de creux (24) du creux en forme de cannelure (20) est en contact avec la surface du creux en forme de cannelure (20) et que ladite courroie (14) présente un tronçon de support (70) en une matière synthétique qui s'étend le long de la courroie (14) et qui est destiné à supporter ledit tronçon actif (68).
  2. Système d'usinage de pièce (10) selon la revendication 1, caractérisé par un dispositif d'entraînement de courroie (34) destiné à entraîner la courroie (14) dans un sens de déplacement de courroie (38, 40).
  3. Système d'usinage de pièce (10) selon l'une quelconque des revendications précédentes, caractérisé par un dispositif de réglage de l'angle d'enroulement destiné à régler un angle d'enroulement (62) de la courroie (14) autour de l'axe de pièce (16), qui correspond avec la longueur de la surface de contact.
  4. Système d'usinage de pièce (10) selon l'une quelconque des revendications précédentes, caractérisé par un dispositif de pression (58) destiné à régler une pression d'appui avec laquelle la courroie (14) se presse, par son tronçon actif (68), contre la surface (22) du creux en forme de cannelure (20).
  5. Système d'usinage de pièce (10) selon l'une quelconque des revendications précédentes, caractérisé par un dispositif de renvoi (44) pour changer la direction de ladite courroie (14).
  6. Système d'usinage de pièce (10) selon la revendication 5, caractérisé par un dispositif de réglage de position (56) destiné à régler la position dudit dispositif de renvoi (44) par rapport à ladite pièce (12).
  7. Système d'usinage de pièce (10) selon l'une quelconque des revendications précédentes, caractérisé par un dispositif d'entraînement en rotation (26) destiné à entraîner en rotation ladite pièce (12) autour de l'axe de pièce (16).
  8. Système d'usinage de pièce (10) selon l'une quelconque des revendications précédentes, caractérisé par un dispositif d'entraînement (32) destiné à entraîner la pièce (12) ou la courroie (14) dans une direction parallèle à l'axe de pièce (16).
  9. Système d'usinage de pièce (10) selon l'une quelconque des revendications précédentes, caractérisé par le fait que ladite courroie (14) s'étend à l'intérieur d'un plan de courroie (52) et que l'on prévoit un dispositif de pivotement (66) destiné à régler un angle (64) entre ledit plan de courroie (52) et ledit axe de pièce (16).
  10. Système d'usinage de pièce (10) selon l'une quelconque des revendications précédentes, caractérisé par le fait que ladite courroie (14) est réalisée sous forme d'une courroie sans fin.
  11. Système d'usinage de pièce (10) selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'une surface (54) délimitée par le tracé de la courroie (14) à l'intérieur d'un plan de courroie (52) est disposée à l'extérieur de la pièce (12).
  12. Système d'usinage de pièce (10) selon l'une quelconque des revendications précédentes, caractérisé par le fait que ledit tronçon actif (68) est disposé entre le tronçon de support (70) et la surface (22) du creux en forme de cannelure (20).
  13. Procédé de superfinition d'une pièce (12) qui présente une surface extérieure de pièce (18) dans laquelle est ménagé au moins un creux en forme de cannelure (20) qui s'étend autour d'un axe de pièce (16), caractérisé par le fait que, pour la superfinition de la surface (22) du creux en forme de cannelure (20), on utilise un outil de superfinition sous forme d'une courroie (14) qui présente un tronçon actif (68) s'étendant le long de ladite courroie (14), que ledit tronçon actif (68) présente un profil efficace (72) qui est accordé à un profil de creux (24) du creux en forme de cannelure (20) et que ledit tronçon actif (68) est mis en contact, le long d'une surface de contact (74) s'étendant le long dudit creux en forme de cannelure (20), avec la surface (22) du creux en forme de cannelure (20).
  14. Utilisation d'un système d'usinage de pièce (10) selon l'une quelconque des revendications 1 à 12, pour la mise en oeuvre du procédé selon la revendication 13.
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)

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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

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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

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EP2636482B1 true EP2636482B1 (fr) 2014-07-02

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* 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
JP6044905B2 (ja) * 2014-10-06 2016-12-14 株式会社サンシン ボールねじ研磨方法及びその装置
JP6316854B2 (ja) * 2016-01-08 2018-04-25 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
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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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
CN101468412B (zh) * 2007-12-28 2011-06-29 鸿富锦精密工业（深圳）有限公司 研磨控制装置及其控制方法

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