EP1522378B1 - Fünfachsige Werkzeugmaschine mit fortlaufender Schleifscheibenabrichtvorrichtung - Google Patents

Fünfachsige Werkzeugmaschine mit fortlaufender Schleifscheibenabrichtvorrichtung Download PDF

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Publication number
EP1522378B1
EP1522378B1 EP04292338A EP04292338A EP1522378B1 EP 1522378 B1 EP1522378 B1 EP 1522378B1 EP 04292338 A EP04292338 A EP 04292338A EP 04292338 A EP04292338 A EP 04292338A EP 1522378 B1 EP1522378 B1 EP 1522378B1
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EP
European Patent Office
Prior art keywords
wheel
machine tool
axis
workpiece
grinding wheel
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
EP04292338A
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English (en)
French (fr)
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EP1522378A1 (de
Inventor
Thierry Cousin
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.)
Sferic Stellite
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Sferic Stellite
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Publication date
Application filed by Sferic Stellite filed Critical Sferic Stellite
Publication of EP1522378A1 publication Critical patent/EP1522378A1/de
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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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • 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
    • B24B53/053—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels using a rotary dressing tool

Definitions

  • the present invention relates to the field of manufacturing precision machined parts.
  • the invention more particularly relates to a machine tool with 5 machining axes with continuous grinding wheel system.
  • the present invention aims to overcome some disadvantages of the prior art by providing a machine tool for machining by grinding wheel on head and continuously a piece of any shape along 5 machining axes.
  • the machine tool comprises a frame (B) and a cradle (6) movable provided with a workpiece support (4).
  • the work support (4) is rotated about a first axis (A1) by first drive means incorporated in the cradle (6).
  • an assembly (5) with bracket (51) is fixed to the cradle (6) to maintain the position in position of the workpiece (3) to be machined.
  • the assembly (5) comprises means (52) for adjusting the height of the bracket (51) to maintain a so-called upper end (50) of the part (3) via a point (5) located at the free end of the gallows (51).
  • the piece is clamped between the workpiece support (4), consisting for example of a doll, and the tip (50).
  • the bracket (51) can be moved towards the work holding support (4) by sliding on a rail (52), so as to position the tip (5) bearing against the workpiece (3) and to clamp the workpiece . Screwing elements, wedging or clamping, insertable at different height levels on the rails (52), can be used to precisely adjust the height of the tip (50). Electric motors or cylinders can allow height adjustment of the tip (50).
  • the bracket (51) is for example of dimensions adapted so that the tip (50) is placed vertically of the workpiece support (4) when the cradle (6) is in the horizontal position.
  • the carrier-piece support (4) rotates in both directions the workpiece (3) along the first axis (A1) passing through the point (50).
  • the mobile cradle (6) is rotated by second drive means integral with the frame (B) along a second axis (A2) which is horizontal.
  • the cradle (6) can for example swing between two limit positions on either side of the vertical plane passing through the second axis (A2), by a rotational movement about this horizontal axis (A2).
  • the axis of rotation (A1) of the workpiece support (4) remains in a vertical plane (P1) perpendicular to the axis of rotation (A2) of the cradle .
  • Panels (P) or security partitions may be arranged along the sides of the cradle (6).
  • the cradle (6) may be surrounded by a security enclosure.
  • a calculation module (7) of the position of the part (3) continuously takes into account data representative of the rotational movements made by the first and second drive means.
  • This calculation module (7) can be connected directly to the motor element (M2) of the second drive means and receive, at regular intervals or in a continuous manner, data from a sensor indicating the position of the support support. -piece (4) rotated by the first drive means.
  • the calculation module (7) is connected to a central control member (not shown) for controlling the first and second drive means to change the orientation of the workpiece (3) to allow its machining as a function of a machining program corresponding to the desired part shape.
  • the calculation module (7) makes it possible to perform a servocontrol of the first and second drive means.
  • the coupling of the central control unit with this calculation module (7) of the position of the part makes it possible to control and adjust if necessary the commands made by the central control member for the first and second driving means, so as to obtain a controlled orientation of the workpiece (3) to be machined.
  • the calculation module (7) thus makes it possible to control the good realization of the program.
  • the central control unit can for example immediately stop machining as soon as the part orientation data obtained by the calculation module (7) does not correspond to the program forecasts.
  • the machine tool comprises a machining system (S) provided with a grinding wheel (2) for machining the workpiece (3) and a profiling wheel (1) for cutting the grinding wheel (2).
  • the machining system is integral with the frame (B) and comprises a carrier structure (100) movable in translation along three axes (X, Y, Z).
  • the carrier structure (100) remains straight, the axis (21) of the grinding wheel (2) and the axis (10) of the wheel (1) being kept vertical.
  • this carrier structure (100) is positioned above the cradle (6) and attached to the frame (B) by a system with three crossed slides (101, 102, 103).
  • the translation movements of the machining system (S) are made along the three perpendicular axes of the rails (101, 102, 103), respectively along a horizontal axis (Z) which is longitudinal with respect to the cradle (6), along a horizontal axis transverse (X) with respect to the cradle (6) and along a vertical axis (Y).
  • the slides (101, 102, 103) may be equipped with gear motor elements, cylinders or equivalent displacement system to modify the positioning of the carrier structure (100) relative to the workpiece (3). to machine.
  • the gear motor elements or equivalent are actuated by the central control unit according to the continuous machining program.
  • Other displacement members in translation of a known type can naturally be envisaged to adjust the positioning of the carrier structure (100).
  • the carrier structure (100) is equipped with a main spindle (21) for rotating the grinding wheel (2).
  • a rotating device (12) attached to the supporting structure and provided with a secondary pin (11) integral with the wheel (1) moves around the axis of rotation (20) of the grinding wheel (2).
  • the profiling wheel (1) can rotate around the grinding wheel (2) during machining a piece (3) having complex shapes, the position of the grinding wheel (2) can thus evolve without the wheel (1) is an obstacle.
  • This profiling wheel (1) has a profile (13) determined complementary to the profile (23) of the grinding wheel (2).
  • the wheel (1) can be rotated with the secondary spindle (11) via an electric motor or pneumatic speed adjustable.
  • the grinding wheel (2) digs in the workpiece (3) a groove (30) of complementary section to the profile (23) of the grinding wheel (2).
  • the groove (30) of the piece (3) has the same section as the profile (13) of the wheel (1).
  • this wheel (1) is diamond.
  • the secondary pin (11) is electric or pneumatic and mounted on a bracket (110).
  • the rotating device (12) comprises translational displacement means of this bracket (110) for positioning the wheel (1) against the grinding wheel (2).
  • the rotating device (12) which supports the secondary spindle (11) comprises for example guide rails (111) of the bracket (110).
  • a worm system (120, 124) or similar system makes it possible to control the bracket (110) in displacement so as to adjust the distance between the axis (10) of the wheel (1) and the axis ( 20) of the grinding wheel (2), or to bring the wheel (1) closer to the axis (20) of the grinding wheel (2) as and when the grinding wheel (2) wears, or to move the wheel away (2).
  • the main spindle (21) is rotated by an adjustable speed electric or pneumatic motor.
  • This motor (not shown) may be provided with means for reversing the direction of rotation of the spindle principal (21).
  • the rotating device (12) is rotated about the axis of the grinding wheel (2) by means of third drive means.
  • these third drive means may comprise a gear formed by a central gear (122) whose axis coincides with the axis (20) of the grinding wheel (2) and a peripheral gear wheel (123) integral with the device rotating (12) carrying the wheel (1).
  • these third drive means comprise a pulley system and toothed belt.
  • a motorized numerical control element is controlled by a control system of a so-called reference position representative of the position of the axis (20) of the grinding wheel (2), to make it possible to rotate the peripheral gear (123) around the central gear (122) in any direction of rotation as a function of the reference position.
  • the control system (not shown) actuates a numerical control for the motorized element of said third drive means to move the peripheral wheel (123) so that the rotating device (12) occupies an angular position relative to the axis (20) of the grinding wheel (2) so as to maintain a safety angle (24) avoiding collision between the wheel (1), the workpiece (3) and the machine members, while allowing optimized watering of the piece (3) and the grinding wheel (2) by at least one nozzle (25) for watering.
  • the nozzle (25) is coupled to a watering shoe.
  • the safety angle (24) is managed for example directly by a parameter of the machining program.
  • a sprinkler system is provided to prevent heating of the tools.
  • the sprinkler system (not shown) is for example attached to the rotating device (12) for watering the workpiece (3).
  • the orientation of the sprinkler opening being turned towards the grinding wheel (2), the workpiece (3) will be constantly sprinkled since the rotating device will follow the movements of the part (3).
  • any point of the piece (3) can be presented at any angle to the grinding wheel (2).
  • Another advantage of the invention is therefore to allow machining grooves (30) with a very high accuracy from all angles and thus to manufacture complex shapes parts.
  • the invention offers the possibility of performing machining for example circular continuous.
  • the fact of being able to rotate the machining system (S) around the machining tool allows in a given position of the machining system (S) to fetch with the head, in a tool magazine disposed nearby, the tool to be placed on the axis of the main grinding spindle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Milling Processes (AREA)

Claims (16)

  1. Werkzeugmaschine, die dazu vorgesehen ist, ein Stück (3) mit einer komplexen Form durch umgekehrtes und fortlaufendes Schleifscheibenabrichten zu verarbeiten, mit
    einem Gehäuse,
    einem Verarbeitungssystem (S), das einen tragenden Aufbau aufweist, der in drei Achsen translationsbeweglich ist, und mit einer Schleifscheibe (2), zum Bearbeiten eines Stück (3) versehen ist,
    und einem beweglichen Gestell, das das Arbeitsstück (3) positioniert, und entlang einer senkrechten, horizontalen Achse mit Antriebsmitteln zur Rotation angetrieben wird,
    dadurch gekennzeichnet, dass einerseits das Arbeitsstück (3) auf einem Stütz-Werkstückträger angebracht ist, der mit einem für den Stütz-Werkstückträger geeigneten Antriebsmittel um eine in einer vertikalen Ebene liegende Achse zur Rotation angetrieben wird,
    wobei das Antriebsmittel in das bewegliche Gestell (6), das das Arbeitsstück (3) positioniert, eingebaut ist, und dass andererseits die Verarbeitungsvorrichtung ein Profilierungsrändelrad aufweist, zum Abrichten der Schleifscheibe (2), so dass der tragende Aufbau mit dem Gehäuse verbunden ist und mit einem Hauptzapfen ausgestattet ist, um die Schleifscheibe (2) zu drehen, wobei sich eine drehbare Vorrichtung, die an den tragenden Aufbau anschließt und mit einem zweiten Zapfen versehen ist, der mit dem Rändelrad (1) verbunden ist, um die Rotationsachse (20) der Schleifscheibe (2) herum bewegt.
  2. Werkzeugmaschine gemäß Anspruch 1, in der die Achse (21) der Schleifscheibe (2) und die Achse (10) des Rändelrads (1) vertikal angeordnet sind, wobei die drehbare Vorrichtung ein Verschiebungsmittel zur Translation einer Auflage des zweiten Zapfens aufweist, zum Positionieren des Rändelrads (1) relativ zu der Schleifscheibe (2).
  3. Werkzeugmaschine gemäß Anspruch 2, in der das Verschiebungsmittel zur Translation Leitschienen (111) für die Auflage des zweiten Zapfens, und ein Gewindestangensystem (120, 124), zum Regulieren des Abstands zwischen der Achse (10) des Rändelrads (1) und der Achse (20) der Schleifscheibe (2), aufweist.
  4. Werkzeugmaschine gemäß einem der Ansprüche 1 bis 3, in der ein Aufbau (5) mit einem Träger (51) auf dem Gestell (6) befestigt ist und die ein Einstellmittel für die Höhe des Trägers (51) aufweist, um ein oberes Ende des Stücks (3) mittels einer Spitze (5), die sich an dem freien Ende des Trägers befindet, zu halten.
  5. Werkzeugmaschine gemäß Anspruch 4, in der das erste Antriebsmittel ein Motorisierungselement (M1) und eine Rotatienswelle (40) aufweist, die mit der Werkstückauflage (4) verbunden ist, wobei die Rotationswelle, die Werkstückauflage und die Spitze (5) an dem Ende des Trägers (51) entlang der ersten Achse (A1) ausgerichtet sind.
  6. Werkzeugmaschine gemäß einem der Ansprüche 1 bis 5, in der sich der tragende Aufbau des Verarbeitungssystems (S), das oberhalb des Gestells positioniert ist, durch ein System aus drei gekreuzten Laufschienen an das Gehäuse (B) angeschlossen ist, wobei die Translationsbewegungen des Verarbeitungssystems (S) entlang der drei senkrechten Achsen der Laufschienen durch eine zentrale Steuereinheit gehandhabt werden, die einem vorgegebenen, fortlaufenden Verarbeitungsprogramm folgt.
  7. Werkzeugmaschine gemäß einem der Ansprüche 1 bis 6, in der das zweite Antriebsmittel, das mit dem Gehäuse (B) verbunden ist, mit einem Motorisierungselement (M2) verbunden ist, um das Gestell (6) zum Schwenken zwischen zwei Grenzpositionen, beiderseits einer vertikalen Ebene, die durch die horizontale zweite Achse (A2) verläuft, zu bringen.
  8. Werkzeugmaschine gemäß einem der Ansprüche 1 bis 7, in der die drehbare Vorrichtung durch ein drittes Antriebsmittel, das von einem Kontrollsystem gesteuert und eingestellt wird, aus einer Position, die als repräsentative Referenz der Achse (20) der Schleifscheibe (2) bezeichnet wird, um die Achse der Schleifscheibe (2) herum rotierend angetrieben ist,
    wobei das Kontrollsystem die dritten Antriebsmittel so steuert, dass die drehbare Vorrichtung (12) gegenüber der Achse (20) der Schleifscheibe (2) eine derartige winkelförmige Position einnimmt, dass ein Sicherheitswinkel (24) bewahrt wird, der ein Zusammenstoßen des Rändelrads (1), des Werkstücks (3) und der Maschinenbauteile verhindert, wobei ein optimiertes Abbrausen des Stücks (3) und der Schleifscheibe (2) durch mindestens eine Waschdüse (25) ermöglicht wird.
  9. Werkzeugmaschine gemäß einem der Ansprüche 6 oder 7, in der die bewegliche Vorrichtung (12) mittels einem dritten Antriebsmittel, das von dem zentralen Steuerelement angesteuert wird, rotierend um die Achse (20) der Schleifscheibe (2) angetrieben wird.
  10. Werkzeugmaschine gemäß einem der Ansprüche 8 oder 9, in der das dritte Antriebsmittel entweder ein Getriebe aufweist, das aus einem zentralen Zahnrad (122), dessen Achse mit der Achse (20) der Schleifscheibe (2) zusammenfällt, und einem peripheren Zahnrad (123) gebildet wird, das mit der drehbaren Vorrichtung (12), die das Rändelrad (1) trägt, verbunden ist, oder ein System aus Antriebsscheibe und Zahnriemen.
  11. Werkzeugmaschine gemäß Anspruch 10, in der ein motorisiertes Element, das numerisch gesteuert und von dem Kontrollsystem der Referenzposition eingestellt wird, derart angeordnet ist, dass es das periphere Zahnrad (123) um das zentrale Zahnrad (122) herum, in beliebiger Drehrichtung, abhängig von der Referenzposition, drehen lässt.
  12. Werkzeugmaschine gemäß Anspruch 10, in der ein motorisiertes Element, das numerisch gesteuert und von dem zentralen Steuersystem eingestellt wird, derart angeordnet ist, dass es das periphere Zahnrad (123) um das zentrale Zahnrad (122) herum, in beliebiger Drehrichtung, abhängig von dem Verarbeitungsprogramm, drehen lässt.
  13. Werkzeugmaschine gemäß einem der Ansprüche 1 bis 12, in der der Hauptzapfen (21) durch einen Elektromotor mit verstellbarer Geschwindigkeit zur Rotation angetrieben wird, und mit einem Mittel zur Änderung der Drehrichtung versehen ist.
  14. Werkzeugmaschine gemäß einem der Ansprüche 1 bis 13, in der das Profilierungsrändelrad (1) diamantenbesetzt ist, und durch den zweiten Zapfen (20), mittels einem Elektro- oder Druckluftmotor mit verstellbarer Geschwindigkeit, rotierend angetrieben wird.
  15. Werkzeugmaschine gemäß einem der Ansprüche 1 bis 14, in der an der drehenden Vorrichtung (12) ein Berieselungssystem angeschlossen ist, um das stück (3) abzubrausen.
  16. Werkzeugmaschine gemäß einem der Ansprüche 6 bis 15, in der das zentrale Steuerelement an ein Berechnungsmodul (7) für die Position des Stücks (3) gekoppelt ist, zum derartigen Steuern und Einstellen der ersten und zweiten Antriebsmittel, dass eine Orientierung des Stücks (3), die seine Bearbeitung entsprechend dem Programm für die gewünschte Form des Stücks erlaubt, erhalten wird.
EP04292338A 2003-10-07 2004-10-01 Fünfachsige Werkzeugmaschine mit fortlaufender Schleifscheibenabrichtvorrichtung Expired - Lifetime EP1522378B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0311710A FR2860448B1 (fr) 2003-10-07 2003-10-07 Machine-outil a 5 axes d'usinage avec systeme de taillage en meule en continu
FR0311710 2003-10-07

Publications (2)

Publication Number Publication Date
EP1522378A1 EP1522378A1 (de) 2005-04-13
EP1522378B1 true EP1522378B1 (de) 2009-12-09

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EP04292338A Expired - Lifetime EP1522378B1 (de) 2003-10-07 2004-10-01 Fünfachsige Werkzeugmaschine mit fortlaufender Schleifscheibenabrichtvorrichtung

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Country Link
US (1) US7195543B2 (de)
EP (1) EP1522378B1 (de)
AT (1) ATE451198T1 (de)
DE (1) DE602004024487D1 (de)
FR (1) FR2860448B1 (de)

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JP4865579B2 (ja) * 2007-02-06 2012-02-01 三菱重工業株式会社 歯合わせ装置及び歯車加工機械
DE102009059659B4 (de) * 2009-12-19 2019-11-07 Gebr. Heller Maschinenfabrik Gmbh Werkzeugmaschine mit Drehtisch und zusätzlicher Werkstückabstützung
CN102689263B (zh) * 2012-06-15 2015-07-22 湘潭三峰数控机床有限公司 多拖板双主轴对称式磨削加工中心
CN109773497A (zh) * 2018-11-30 2019-05-21 广州市昊志机电股份有限公司 可扩展四轴半转动装置
CN110293471A (zh) * 2019-07-24 2019-10-01 深圳市久久犇自动化设备股份有限公司 一种曲面工件的加工方法及用于该方法中的设备
CN110788702A (zh) * 2019-12-03 2020-02-14 迈微思(深圳)科技有限公司 滤波器打磨装置
CN110774047B (zh) * 2020-01-02 2020-04-21 广东原点智能技术有限公司 一种卧式五轴加工中心
US11413721B2 (en) * 2020-05-15 2022-08-16 Silvano Altamirano Granite polishing machine
CN116330489B (zh) * 2021-12-17 2026-01-23 山东工业陶瓷研究设计院有限公司 一种刻线装置、方法以及系统
DE102024100134A1 (de) 2024-01-03 2025-07-03 Gebr. Heller Maschinenfabrik Gmbh Werkstücklagereinheit, Werkzeugmaschine und Verfahren zum Spannen eines Werkstücks
CN118081534A (zh) * 2024-03-20 2024-05-28 南京嘉博光学仪器有限公司 一种球面光学镜片的铣磨装置及其加工工艺

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DE3005606C2 (de) * 1980-02-15 1992-08-27 Hauni-Werke Körber & Co KG, 2050 Hamburg Numerisch gesteuerte Maschine zum Schleifen mehrerer unterschiedlicher Flächen an ein- und demselben Werkstück
DE3315196A1 (de) * 1983-04-27 1984-10-31 Schaudt Maschinenbau Gmbh, 7000 Stuttgart Verfahren zum abrichten und schaerfen einer schleifscheibe
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DE4441252B4 (de) * 1994-11-19 2006-01-26 Maschinenfabrik Berthold Hermle Ag Werkzeugmaschine, insbesondere Bohr- und Fräsmaschine
JP3052190B2 (ja) * 1996-05-23 2000-06-12 セイコー精機株式会社 砥石の修正方法およびその装置
JP2001009720A (ja) * 1999-06-22 2001-01-16 Hitachi Seiki Co Ltd 研削盤におけるクーラント供給方法およびその装置
JP3844420B2 (ja) * 2000-09-04 2006-11-15 株式会社牧野フライス製作所 マシニングセンタ及びその工具交換方法
CA2356497A1 (en) * 2001-08-30 2003-02-28 Applied Physics Specialties Limited Multi-axis polishing machine

Also Published As

Publication number Publication date
EP1522378A1 (de) 2005-04-13
FR2860448A1 (fr) 2005-04-08
FR2860448B1 (fr) 2006-01-06
US7195543B2 (en) 2007-03-27
US20050118928A1 (en) 2005-06-02
DE602004024487D1 (de) 2010-01-21
ATE451198T1 (de) 2009-12-15

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