EP1522378A1 - Fünfachsige Werkzeugmaschine mit fortlaufender Schleifscheibenabrichtvorrichtung - Google Patents

Fünfachsige Werkzeugmaschine mit fortlaufender Schleifscheibenabrichtvorrichtung Download PDF

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Publication number
EP1522378A1
EP1522378A1 EP04292338A EP04292338A EP1522378A1 EP 1522378 A1 EP1522378 A1 EP 1522378A1 EP 04292338 A EP04292338 A EP 04292338A EP 04292338 A EP04292338 A EP 04292338A EP 1522378 A1 EP1522378 A1 EP 1522378A1
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EP
European Patent Office
Prior art keywords
wheel
axis
machine tool
grinding wheel
tool 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.)
Granted
Application number
EP04292338A
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English (en)
French (fr)
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EP1522378B1 (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
Original Assignee
A RESPONSABILITE ABSALON Ltee Ste
A Responsabilite Absalon Ltee Ste
SARL ABSALON
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Publication date
Application filed by A RESPONSABILITE ABSALON Ltee Ste, A Responsabilite Absalon Ltee Ste, SARL ABSALON filed Critical A RESPONSABILITE ABSALON Ltee Ste
Publication of EP1522378A1 publication Critical patent/EP1522378A1/de
Application granted granted Critical
Publication of EP1522378B1 publication Critical patent/EP1522378B1/de
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
    • 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 the manufacture of parts precision machined.
  • the invention relates more particularly to 5-axis machine tool with grinding wheel system continued.
  • the present invention aims to overcome certain disadvantages of the prior art by proposing a machine tool for machining by cutting grinding on a head and continuously a part of any shape according to 5 axes machining.
  • a machine tool for machining a workpiece complex shapes by cutting grinding wheel on head and continuously, comprising a frame, a workpiece holder driven in rotation by first means of driving around a first axis included in a vertical plane, a machining system provided with a grinding wheel for machining the workpiece and a wheel profiling device for cutting the wheel, characterized in that said first means of training are incorporated in a mobile cradle driven in rotation by second drive means along a second axis horizontal perpendicular to said vertical plane, the cutting system comprising a carrier structure movable in translation along three axes, the supporting structure being secured to the frame and equipped with a main spindle to rotate the wheel, a rotating device attached to the structure carrier and provided with a secondary pin secured to the wheel moving around the axis of rotation of the grinding wheel.
  • the axis of the wheel and the axis of the wheel are kept vertical, the rotary device comprising means for translational movement of a support of the secondary spindle to position the wheel against the wheel.
  • the means of displacement in translation include guide rails of the spindle support secondary and a worm gear system to adjust the distance between the axis of the wheel and the axis of the wheel.
  • an assembly with a stem is fixed at cradle and includes height adjustment means of the stem for maintain a so-called upper end of the piece through a tip located at the free end of the gallows.
  • the first means with a drive element and a drive shaft. rotation connected to the workpiece holder, the rotation shaft, the workpiece holder and the tip at the end of the stem being aligned along the said first axis.
  • the carrying structure of the system of cutting positioned above the cradle, is attached to the frame by a system with three crossed slides, the translation movements of the machining system along the three perpendicular axes of the slides being operated by a central controller according to a program predetermined continuous machining.
  • the second drive means integral with the frame, are connected to a motor element to rotate the cradle between two limit positions on either side of the vertical plane passing through the second horizontal axis.
  • the rotating device is driven by rotation around the axis of the grinding wheel via third means of training controlled and enslaved by a control system of a reference position representative of the position of the axis of the grinding wheel, the control system actuating the third drive means for the rotating device to occupy an angular position with respect to the axis of the grinding wheel so as to maintain a safety angle avoiding collision between the wheel, the workpiece and the machine members, while allowing optimized watering of the part and the grinding wheel by at least one nozzle watering.
  • the rotating device is driven by rotation around the axis of the grinding wheel via third means driven by the central control unit.
  • the security angle is managed directly by a parameter of the machining program.
  • the third means of training comprise either a gear formed by a central gear wheel whose axis is confused with the axis of the grinding wheel and a peripheral gear wheel integral with the rotating device carrying the wheel, a pulley system and notched belt.
  • a motorized controlled element digital and enslaved by the control system of the reference position is arranged to rotate the peripheral gear around the wheel central tooth in any direction of rotation depending on the reference position.
  • a motorized controlled element digital and controlled by the central control unit is arranged to rotate the peripheral gear around the center gear in any direction of rotation depending on the machining program.
  • the main spindle is driven in rotation by an electric motor with adjustable speed and provided with means to reverse the direction of rotation.
  • the profiling wheel is diamond and rotated by the secondary spindle via a electric or pneumatic motor with adjustable speed.
  • a watering system is attached to the rotating device for watering the room.
  • the central control unit is coupled to a module for calculating the position of the part to control and enslaving the first and second means of training, so as to obtain an orientation of the part allowing its machining according to the program corresponding to the desired part shape.
  • the machine tool comprises a frame (B) and a mobile cradle (6) provided with a workpiece support (4).
  • the workpiece holder (4) is rotated about a first axis (A1) by first means of training incorporated in the cradle (6).
  • an assembly (5) with a bracket (51) is fixed to the cradle (6) to hold the workpiece (3) in position machined.
  • the assembly (5) comprises height adjustment means (52) of the bracket (51) for holding a so-called upper end (50) of the piece (3) via a point (5) at the free end of the gallows (51).
  • the workpiece is clamped between the workpiece carrier (4), constituted for example a doll, and the tip (50).
  • the gallows (51) can be moved to the work support (4) by sliding on a rail (52), in order to position the tip (5) bearing against the workpiece (3) and to perform the tightening the workpiece. Screwing, wedging or clamping elements, insertable at different height levels on the rails (52), can be used to precisely the height of the tip (50). Electric motors or cylinders may allow height adjustment of the tip (50).
  • the gallows (51) is for example of suitable dimensions so that the tip (50) is placed vertically of the work support support (4) when the cradle (6) is in position horizontal.
  • the carrier-piece support (4) rotates in both directions the part (3) along the first axis (A1) passing through the point (50).
  • the mobile cradle (6) is rotated by second driving means secured to the frame (B) along a second axis (A2) which is horizontal.
  • the cradle (6) can for example swing between two limit positions on both sides 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 can be arranged along the sides of the cradle (6).
  • the cradle (6) can be surrounded by a security enclosure.
  • the first means of training for the workpiece support (4) may comprise a shaft (40) directly actuated by an engine electric (M1).
  • the rotation shaft (40) is for example connected to the support workpiece carrier (40), aligned with the workpiece holder and the tip (50) according to the first axis (A1).
  • This electric motor (M1) is placed inside the cradle (6), whose thickness (61) is for example of the order of 30 centimeters.
  • the rotation shaft (40) rotates a plate (45) to which is fixed the workpiece holder (4).
  • the seconds means of training are connected to a motorization element (M2) incorporated in the frame (B) to rotate the cradle (6) between the two limit positions (not shown).
  • the cradle (6) can be suspended by through one or two levels.
  • a calculation module (7) for the position of the workpiece (3) continuously takes into account data representative of the rotational movements made by the first and second means of training.
  • This calculation module (7) can be connected directly to the motor element (M2) second means of training and receive, at regular intervals or on a continuous basis, data from a sensor indicating the position of the workpiece carrier (4) rotated by the first means of training.
  • the calculation module (7) is connected to a central controller (not shown) for control the first and second means of training to make evolve the orientation of the part (3) to allow its machining according to a machining program corresponding to the desired part shape.
  • the calculation module (7) allows the realization of an enslavement of the first and second drive means.
  • the coupling of the organ central control unit with this calculation module (7) of the position of the part allows to order and adjust if necessary the orders made by the central control unit for the first and second means of training, 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 implementation of the program.
  • the central control unit can for example immediately stop machining as soon as the orientation data of the piece obtained by the calculation module (7) do 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 wheel (1) profiling for cutting the 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 supporting 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 slides (101, 102, 103), respectively along a horizontal axis (Z) longitudinal to the cradle (6), according to a transverse horizontal axis (X) relative to the cradle (6) and along a vertical axis (Y).
  • the slides (101, 102, 103) may be equipped with geared motor elements, jacks or equivalent displacement system to modify the positioning the carrier structure (100) relative to the workpiece (3) to machined.
  • 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 considered to adjust the positioning of the structure carrier (100).
  • the supporting structure (100) is equipped with a main spindle (21) to rotate 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 of 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) as illustrated in FIG. 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) by via an electric or pneumatic motor with adjustable speed.
  • the grinding wheel (2) digs into the piece (3) a groove (30) of complementary section to the profile (23) of the grinding wheel (2).
  • the groove (30) of the part (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 square (110).
  • the device turn (12) comprises means for translational movement of this square (110) to position the wheel (1) against the grinding wheel (2).
  • the rotating device (12) which supports the secondary spindle (11) comprises example of the guide rails (111) of the bracket (110).
  • a screw system without end (120, 124) or similar system makes it possible to control moving the bracket (110), 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 together the axis (20) of the grinding wheel (2) as the grinding wheel (2) wears out, either to move the wheel (1) away from the axis (20) of the grinding wheel when changing grinding wheel (2) or wheel (1).
  • the presence of a worm (120) ensures a very precise adjustment.
  • the guide rail (111) can be equipped with a measuring ruler to know the distance of the wheel (1) relative to the axis (20) of the grinding wheel and thus be able to calculate in real time the radius of the grinding wheel (2).
  • the rail (111) is fixed on the rotating device (12) which can pivot about the axis (20) of the grinding wheel (2).
  • the main spindle (21) is rotated by an engine electric or pneumatic with adjustable speed.
  • This engine (not shown) can be provided with means to reverse the direction of rotation of the spindle principal (21).
  • the device rotating (12) is rotated about the axis of the grinding wheel (2) by via third means of training.
  • these third drive means may comprise a gear formed by a central gear (122) whose axis is coincident with the axis (20) of the grinding wheel (2) and a peripheral gear (123) secured to the rotating device (12) carrying the wheel (1).
  • these third drive means comprise a pulley system and notched belt.
  • a motorized element with digital control is slaved by a control system of a position said reference representative of the position of the axis (20) of the grinding wheel (2), to rotate the peripheral gearwheel (123) around the central gear (122) in any direction of rotation in function of the reference position.
  • the control system (not shown) actuates a numerical control so that the motorized element of said third drive means moves the peripheral wheel (123), such that the rotating device (12) occupies an angular position by 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 members machine, while allowing optimized watering of the workpiece (3) and the grinding wheel (2) by at least one watering nozzle (25).
  • the nozzle (25) is coupled to a watering hoof.
  • the security angle (24) is managed for example directly by a parameter of the machining program.
  • the control system will command the device turning (12) to move each time the safety angle (24) of the wheel (1) is no longer respected. In this way the wheel (1) is indeed moved so that there is no contact between the workpiece (3), the wheel (1), and the machine parts.
  • the central control organ which actuates the movements of the rotating device (12), depending on the evolution of the predetermined machining program.
  • the position angle of the wheel (1) can thus be enslaved and controlled numerically.
  • Data from calculation module (7), representative of the rotational movements made by the first and second drive means, can also be taken into account by the central control unit for the actuation of the rotating device (12).
  • the central control body may consist of a system of numerical control which allows for example, by knowing the distance of the wheel (1) relative to the axis (20) of the grinding wheel (2), to calculate the radius of the grinding wheel and compensate for its wear by bringing the workpiece (3) closer to the axis (20) of the grinding wheel (2) of the same distance that it brings the wheel (1) the axis (20) of the grinding wheel (2).
  • the speeds of the motors of the spindles (11, 21) of the wheel (1) and the grinding wheel (2) can be enslaved.
  • a watering system is designed to prevent the tools from heating up.
  • the watering system (no shown) is for example attached to the rotating device (12) for watering the room (3).
  • the orientation of the watering opening being turned towards the mill (2), the workpiece (3) will be constantly watered since the rotating device will follow the movements of the part (3).
  • the grinding wheel (2) is made of abrasive crystals.
  • the engines used to to rotate the support of the wheel around the axis (20) of the grinding wheel, the workpiece support (4), the cradle (6) and to move the square (110) of the wheel are preferably electric.
  • the engines used to rotate the spindle (21) of the grinding wheel (2) and the spindle (11) of the wheel (1) are preferably electric or pneumatic.
  • Others machine elements can each be made of steel, alloy or hard ceramic or steel, alloy or ceramic hard and low coefficient dilation as invar to increase the accuracy of the whole.
  • the grinding wheels are tools normally used for finishing and rectifications because of their high accuracy.
  • One of the advantages of the invention is to machine continuously with a very high precision a piece (3) and not require additional grinding or finishing.
  • a Another advantage of the invention is therefore to allow the machining of grooves (30) with a very high precision from all angles and so to manufacture pieces of complex shapes.
  • the invention offers the possibility of performing machining for example circular continuous.

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

Family

ID=34307479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04292338A Expired - Lifetime EP1522378B1 (de) 2003-10-07 2004-10-01 Fünfachsige Werkzeugmaschine mit fortlaufender Schleifscheibenabrichtvorrichtung

Country Status (5)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0712682A2 (de) * 1994-11-19 1996-05-22 Maschinenfabrik Berthold Hermle Aktiengesellschaft Werkzeugmaschine, insbesondere Bohr- und Fräsmaschine
EP1184134A2 (de) * 2000-09-04 2002-03-06 Makino Milling Machine Co. Ltd. Bearbeitungszentrum mit Abrichtwerkzeug
CA2356497A1 (en) * 2001-08-30 2003-02-28 Applied Physics Specialties Limited Multi-axis polishing machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS585148B2 (ja) * 1976-10-15 1983-01-29 豊田工機株式会社 砥石車の修正方法および装置
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
CH664728A5 (de) * 1983-06-29 1988-03-31 Hauni Werke Koerber & Co Kg Flachschleifmaschine.
DE3740199A1 (de) * 1987-11-27 1989-06-08 Schaudt Maschinenbau Gmbh Verfahren und vorrichtung zum bahngesteuerten abrichten einer schleifscheibe
US5595528A (en) * 1994-10-19 1997-01-21 Vermont Rebuild, Inc. Grinding wheel dresser
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0712682A2 (de) * 1994-11-19 1996-05-22 Maschinenfabrik Berthold Hermle Aktiengesellschaft Werkzeugmaschine, insbesondere Bohr- und Fräsmaschine
EP1184134A2 (de) * 2000-09-04 2002-03-06 Makino Milling Machine Co. Ltd. Bearbeitungszentrum mit Abrichtwerkzeug
CA2356497A1 (en) * 2001-08-30 2003-02-28 Applied Physics Specialties Limited Multi-axis polishing machine

Also Published As

Publication number Publication date
US7195543B2 (en) 2007-03-27
FR2860448A1 (fr) 2005-04-08
ATE451198T1 (de) 2009-12-15
FR2860448B1 (fr) 2006-01-06
EP1522378B1 (de) 2009-12-09
DE602004024487D1 (de) 2010-01-21
US20050118928A1 (en) 2005-06-02

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