EP0448509B1 - Rectifieuse cylindrique sans centre - Google Patents

Rectifieuse cylindrique sans centre Download PDF

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Publication number
EP0448509B1
EP0448509B1 EP91810119A EP91810119A EP0448509B1 EP 0448509 B1 EP0448509 B1 EP 0448509B1 EP 91810119 A EP91810119 A EP 91810119A EP 91810119 A EP91810119 A EP 91810119A EP 0448509 B1 EP0448509 B1 EP 0448509B1
Authority
EP
European Patent Office
Prior art keywords
wheel
grinding wheel
longitudinal
machine
machine according
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.)
Expired - Lifetime
Application number
EP91810119A
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German (de)
English (en)
Other versions
EP0448509A1 (fr
Inventor
Walter Pfluger
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.)
Agathon AG Maschinenfabrik
Original Assignee
Agathon AG Maschinenfabrik
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 Agathon AG Maschinenfabrik filed Critical Agathon AG Maschinenfabrik
Priority to AT91810119T priority Critical patent/ATE95457T1/de
Publication of EP0448509A1 publication Critical patent/EP0448509A1/fr
Application granted granted Critical
Publication of EP0448509B1 publication Critical patent/EP0448509B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work

Definitions

  • the present invention relates to a centerless cylindrical grinding machine according to the preamble of claim 1.
  • a centerless cylindrical grinding machine according to the preamble of claim 1.
  • Such a machine is already known from the document FR-A-2575953.
  • the workpiece support located between the grinding wheel and the regulating wheel is usually arranged on the regulating wheel carriage and, in order to adapt the machine to different workpiece diameters, is adjustable in the radial direction relative to the regulating wheel.
  • the workpiece support further comprises a workpiece support body which is displaceable in height and in the axial direction of the regulating wheel. To compensate for a taper or align a parallelism in relation to the grinding wheel and / or the regulating wheel, the workpiece support body is additionally pivoted horizontally.
  • a dressing device with a dressing member is assigned to both the regulating wheel and the grinding wheel.
  • each of the dressing devices comprises a first dressing slide that can be moved in the longitudinal direction of the machine and a second dressing slide that can be moved at right angles to the first dressing slide.
  • the cross-slide drive for the grinding wheel can be made smaller.
  • the workpiece support can be essentially firmly connected to the machine bed.
  • the swivel position of the workpiece support relative to the grinding wheel is adjusted within the scope of the adjustment options of the latter by adjusting the grinding wheel.
  • the relative The position of the regulating wheel relative to the workpiece support remains unchanged, ie the regulating wheel does not need to be readjusted.
  • the workpiece support is decoupled from the regulating wheel. Because the workpiece support is always in the same place, the workpiece feed device can be implemented with less effort compared to the prior art. As a further advantage, in-process measurements can be considerably simplified.
  • the centerless cylindrical grinding machine which is shown in FIGS. 1 to 3, comprises a machine bed 1 on which a first horizontal plate 5 is pivotally mounted about a vertical axis 6 (pivoting direction C1). The edge region of the plate 5 opposite the pivot axis is supported by a support guide 40.
  • a first longitudinal slide 7 is arranged which has a part which can be displaced in the longitudinal direction X1 of the machine.
  • a first cross slide 8 is arranged on this part and has a part which can be displaced perpendicular to the direction X1 in the transverse direction Y1 of the machine.
  • a grinding wheel headstock 49 with a rotatably mounted grinding wheel 2 is fastened to this.
  • the axis of the grinding wheel 2 is designed as a hub 27, in which a shaft 28 engages in a longitudinally displaceable manner.
  • the torque transmission from the shaft to the hub takes place, for example, by means of a serration or by means of feather keys.
  • the shaft 28 is coupled, for example, via a V-belt drive 50 to the drive motor 39, which in this example is arranged on the first longitudinal slide 7.
  • This structure has the advantageous effect that the massive drive motor 39 does not have to be moved when the grinding wheel 2 'is moved back and forth, for example when the grinding wheel executes its intended oscillating movements when machining workpieces.
  • An embodiment in which the drive motor 39 is fastened to the first cross slide 8 is also possible in particular for very small machines.
  • a first dressing device 12 for the grinding wheel 2 is arranged on the first pivotable plate 5 and is firmly connected to said plate.
  • the first dressing device 12 comprises a first dressing member 14, for example a diamond, which is positioned at the center height 16 of the grinding wheel axis and is held in the dressing device 12 by means of a locking device 51.
  • a workpiece support 4 is spaced from the lateral surface of the Grinding wheel connected to the machine bed 1 only adjustable in height A1.
  • the workpiece support 4 comprises a workpiece support body 17. The horizontal distance and the horizontal angular position of the grinding wheel 2 relative to the support body 17 is set by means of the pivotable first plate 5, the first longitudinal slide 7 and the first cross slide 8.
  • a workpiece feed device 31 comprises, for example, a horizontal transport rail 29 attached to vertical stands 42, 43 and arranged above the machine.
  • a transport slide 32 arranged on the latter in a longitudinally displaceable manner has vertically movable feed arms 33, 34 for removing or dispensing workpieces on a workpiece supply device 30 and for feeding one workpiece to be machined on the support body 17 or for removing a machined workpiece from the support body 17. It is obvious and immediately apparent that the feeding and removal of the workpieces in the support body 17 is simpler than in the prior art if the support body is always positioned at the same location in the longitudinal direction of the machine and is always aligned in the transverse direction to the machine. The design and the control engineering effort of the feed device can be significantly reduced.
  • both the first longitudinal slide 7 and the first transverse slide 8 are each provided with a CNC-controlled axis, which is not specifically shown in the figures.
  • the axes are each one Drive motor 35 for the longitudinal slide and driven by a drive motor 37 for the cross slide.
  • the drive motors are electrically connected to an associated electronic control 21, 22.
  • the drive motors can either be stepper motors or servomotors, the effective position of the two slides being reported back to the electronic control via position sensors (not shown).
  • the pivot axis 6 for the first plate 5 is arranged in the area of the grinding wheel 2. In the course of the development of the machine, it has proven to be advantageous to have the pivot axis 6 for the first plate 5 run centrally through the workpiece support 4.
  • a regulating wheel 3 is provided horizontally spaced from the grinding wheel 2 in the longitudinal direction of the machine. It is arranged on a regulating disc headstock 47 and is rotatably mounted about an axis 19. The direction of rotation of the regulating wheel is indicated by B2 in the figures.
  • the regulating disc headstock 47 is fastened to a holding bracket 48 and can be inclined in the vertical direction V2 relative to the latter.
  • the heat development in the drive of the machine according to the invention which is designed with a toothed belt drive, is considerably smaller, which has an advantageous effect.
  • the regulating disc headstock 47 and the holding bracket 48 are on one in the transverse direction Y2 of the machine slidable second cross slide 11 attached.
  • the latter is arranged on a second longitudinal slide 10 which can be displaced in the longitudinal direction X2 of the machine.
  • This is in turn, practically identical to the design of the grinding wheel side, mounted on a second horizontal and pivotable plate 9.
  • This is pivotally mounted in the direction C2 on a further vertical pivot axis 24, which is advantageously arranged approximately centrally under the regulating disc 3.
  • the edge area, which lies opposite the pivot axis 24 of the second plate 9, is supported by a further support guide 41.
  • the second slides 10, 11 for the regulating wheel 3 are also preferably set by CNC-controlled drives 36, for the longitudinal slide 10, and 38 for the cross slide 11.
  • a second dressing device 13 is immovably mounted on the second plate 9, this second dressing device 13 comprising a second dressing member 15, for example in the form of a further diamond, which is arranged at the center height 16 of the regulating wheel axis 19.
  • the second dressing member 15 is fastened to the second dressing device 13 with holding means 52.
  • the pivoting movement of the second plate can, although not shown in the drawing, also be carried out by a further numerically controlled drive.
  • a very significant advantage of the machine according to the invention is that the longitudinal or transverse slides 7, 10; 8, 11 can be used not only for feeding the grinding wheel 2 and the control wheel 3 to a workpiece to be machined, but also for feeding the grinding wheel 2 to the first dressing device 12 and for feeding the control wheel 3 to the second dressing device 13 are.
  • the longitudinal or transverse slides 7, 10; 8, 11 can be used not only for feeding the grinding wheel 2 and the control wheel 3 to a workpiece to be machined, but also for feeding the grinding wheel 2 to the first dressing device 12 and for feeding the control wheel 3 to the second dressing device 13 are.
  • four numerically controlled axes X1, Y1, X2, Y2 which in conventional machines alone have to be used to control the two dressing devices, both the dressing processes and the machining processes can be controlled in the machine according to the invention.
  • at least two of the relatively expensive numerical drives can be saved.
  • taper compensation or parallelism alignments can be carried out by the grinding wheel 2 and / or the regulating wheel 3.
  • the machine is programmed via a control panel 22, which is connected to electronic cabinets 21 of the electronic control system via a cable channel 44.
  • the vertical inclination setting V2 of the regulating wheel 3 can also be carried out either manually or by means of an additional numerically controlled drive.
  • a protective hood 53 covers the machine bed with the grinding and regulating wheel arrangements thereon.
  • the electronic control 21, 22 assigned to the machine can also be used, among other things, to calculate the control wheel contour and to generate the latter can be used by the second dressing device 13. Since the regulating wheel is aligned to the center height, it is necessary to convert the regulating wheel contour to be generated as a function of the height, the diameter of a workpiece to be machined and the inclination of the regulating wheel. This conversion must take place because a workpiece is usually machined above the center height 16 of the regulating and grinding wheels, while the control wheel is dressed at the center height. Without conversion, there would be a distortion of the regulating wheel contour.
  • the embodiment of the centerless cylindrical grinding machine according to the invention shown in this example is suitable for drive powers of the grinding wheel of approximately 9 kW.
  • the machining diameters of the workpieces are advantageously below about 15 mm.
  • Appropriately adapted and reinforced constructions would of course also make and use larger machines which have the features according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (12)

  1. Rectifieuse sans centre avec un banc de machine (1), une meule (2), une meule de réglage (3), laquelle est disposées de manière espacée de la meule selon la direction longitudinale de la machine, ainsi qu'un support de pièce d'usinage (4) disposé entre les deux meules (2,3) pour supporter une pièce en cours d'usinage, au moins un chariot longitudinal (7,10) déplaçable selon la direction longitudinale de la machine, et un chariot transversal (8,11) déplaçable selon une direction transversale perpendiculaire à la direction longitudinale est prévu sur celui-ci, caractérisé en ce que la meule (2), respectivement la meule de réglage (3) est disposée à proximité sur le chariot transversal (8,11) et en ce que au moins un dispositif de dressage (12,13) concernant les possibilités de déplacement longitudinal et transversal desdits chariots est-disposé en un endroit fixe.
  2. Machine selon la revendication 1, caractérisée en ce qu'une première plaque (5) est prévue sur laquelle un premier chariot longitudinal (7) est disposé, le chariot transversal déterminé étant défini comme premier chariot transversal (8) pour supporter la meule (2), et en ce qu'un premier dispositif de dressage (12) est relié en un endroit fixe sur la première plaque (5).
  3. Machine selon la revendication 2, caractérisée en ce que la première plaque (5) est orientable autour d'un axe vertical (6), ledit axe d'orientation se trouvant dans la région de la meule (2), passant de préférence au milieu à travers le support de pièce d'usinage (4).
  4. Machine selon l'une des revendications 2 ou 3, caractérisée en ce qu'une deuxième plaque (9) est prévue, orientable autour d'un autre axe vertical (24), un deuxième chariot longitudinal (10) étant disposé sur celle-ci, le chariot transversal déterminé étant défini comme deuxième chariot transversal (11) pour supporter la meule de réglage (3), et en ce qu'un deuxième dispositif de dressage (13) est relié en un endroit fixe sur la deuxième plaque (9).
  5. Machine selon l'une des revendications 1 à 4, caractérisée en ce que chaque dispositif de dressage (12,13) comprend un organe de dressage (14,15), lequel est disposé à la hauteur du centre (16) de la meule (2), respectivement de la meule de réglage (3).
  6. Machine selon l'une des revendications 1 à 5, caractérisée en ce que pour le déplacement de chacun desdits chariots longitudinaux (7,10), respectivement transversaux (8,11), chacun desdits chariots comprend un axe commandé numériquement.
  7. Machine selon l'une des revendications 2 à 6, caractérisée en ce que le premier chariot longitudinal (7) et le premier chariot transversal (8) ne sont pas uniquement prévus pour présenter la meule (2) à une pièce à usiner, mais aussi pour présenter cette dernière au premier dispositif de dressage (12).
  8. Machine selon l'une des revendications 4 à 7, caractérisée en ce que le deuxième chariot longitudinal (10) et le deuxième chariot transversal (11) ne sont pas uniquement prévus pour présenter la meule de réglage (3) à une pièce à usiner, mais aussi pour présenter cette dernière au deuxième dispositif de dressage (13).
  9. Machine selon l'une des revendications 6 à 8, caractérisée en ce que l'axe commandé numériquement du premier chariot transversal (8) est prévu comme axe d'oscillation pour produire des mouvements périodiques en avant et en arrière de la meule (2).
  10. Machine selon l'une des revendications 1 à 9, caractérisée en ce qu'un moteur d'entraînement (39) de la meule (2) est disposé sur le premier chariot longitudinal (7), et en ce que des moyens de transmission de mouvement (27,28) sont prévus au moteur d'entraînement pour permettre un déplacement relatif de la meule selon la direction transversale.
  11. Machine selon l'une des revendications 1 à 10, caractérisée en ce que la meule de réglage (3) est entraînée par un servo-moteur (18) réglable continûment, et en ce que le servo-moteur est couplé avec l'axe (19) de la meule de réglage (3) au moyen d'une courroie crantée (20).
  12. Machine selon l'une des revendications 1 à 11, caractérisée en ce qu'elle comprend une commande électronique (21,22) et en ce que la commande (21,22) est destinée entre autres à calculer et produire le contour (23) de la meule de réglage pour le deuxième dispositif de dressage (13) en travail sur la hauteur du centre de la meule de réglage (3), en fonction d'une position d'outil, d'un diamètre d'outil et de l'inclinaison de la meule de réglage (3).
EP91810119A 1990-03-23 1991-02-22 Rectifieuse cylindrique sans centre Expired - Lifetime EP0448509B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91810119T ATE95457T1 (de) 1990-03-23 1991-02-22 Spitzenlose rundschleifmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH97690 1990-03-23
CH976/90 1990-03-23

Publications (2)

Publication Number Publication Date
EP0448509A1 EP0448509A1 (fr) 1991-09-25
EP0448509B1 true EP0448509B1 (fr) 1993-10-06

Family

ID=4199584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810119A Expired - Lifetime EP0448509B1 (fr) 1990-03-23 1991-02-22 Rectifieuse cylindrique sans centre

Country Status (3)

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EP (1) EP0448509B1 (fr)
AT (1) ATE95457T1 (fr)
DE (1) DE59100441D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104608015A (zh) * 2014-12-30 2015-05-13 东莞理工学院 一种带机械手上下料的全自动数控外圆磨床

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19940687A1 (de) 1999-08-27 2001-03-01 Mikrosa Werkzeugmaschinen Gmbh Schleifmaschinen zum spitzenlosen Schleifen von Werkstücken
CN105171595A (zh) * 2015-08-13 2015-12-23 浙江勤龙机械科技股份有限公司 一种全自动圆盘磨床
CN113001331B (zh) * 2021-02-24 2022-04-26 浙江米奇尔数控科技有限公司 一种多功能机床
CN115365906B (zh) * 2022-09-16 2023-11-17 浙江天台天豪机械有限公司 一种汽车零配件精磨加工装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0449765A1 (fr) * 1990-03-29 1991-10-02 HILTI Aktiengesellschaft Perceuse avec changement de vitesse

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1733092A (en) * 1929-10-22 Centerless grinding machine
FR2575953B1 (fr) * 1985-01-14 1987-03-20 Pont A Mousson Rectifieuse centerless pour la rectification exterieure de pieces cylindriques creuses, notamment de chemises pour cylindres de moteurs a combustion interne

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0449765A1 (fr) * 1990-03-29 1991-10-02 HILTI Aktiengesellschaft Perceuse avec changement de vitesse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104608015A (zh) * 2014-12-30 2015-05-13 东莞理工学院 一种带机械手上下料的全自动数控外圆磨床

Also Published As

Publication number Publication date
ATE95457T1 (de) 1993-10-15
EP0448509A1 (fr) 1991-09-25
DE59100441D1 (de) 1993-11-11

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