WO2003084712A2 - Machine-outil, notamment fraiseuse universelle, et procede pour faire fonctionner cette machine - Google Patents

Machine-outil, notamment fraiseuse universelle, et procede pour faire fonctionner cette machine Download PDF

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Publication number
WO2003084712A2
WO2003084712A2 PCT/CH2003/000213 CH0300213W WO03084712A2 WO 2003084712 A2 WO2003084712 A2 WO 2003084712A2 CH 0300213 W CH0300213 W CH 0300213W WO 03084712 A2 WO03084712 A2 WO 03084712A2
Authority
WO
WIPO (PCT)
Prior art keywords
tool
spindle
machine
machine tool
arc
Prior art date
Application number
PCT/CH2003/000213
Other languages
German (de)
English (en)
Other versions
WO2003084712A3 (fr
Inventor
Walter MÖRI-FREY
Original Assignee
Spacemill Ag
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 Spacemill Ag filed Critical Spacemill Ag
Priority to AU2003212179A priority Critical patent/AU2003212179A1/en
Publication of WO2003084712A2 publication Critical patent/WO2003084712A2/fr
Publication of WO2003084712A3 publication Critical patent/WO2003084712A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/1554—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/48—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs
    • B23Q1/4828—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs a single rotating pair followed parallelly by a single sliding pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/48—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs
    • B23Q1/4804—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs a single rotating pair followed perpendicularly by a single sliding pair
    • B23Q1/4819—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs a single rotating pair followed perpendicularly by a single sliding pair followed perpendicularly by a single sliding pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/157—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
    • B23Q3/1578—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools for tool transfer in a machine tool with a horizontal and a vertical spindle; for tool transfer in a machine tool with a spindle having variable orientation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/385—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously using a gear and rack mechanism or a friction wheel co-operating with a rail
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/1554—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore
    • B23Q2003/155414—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising two or more grippers
    • B23Q2003/155418—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising two or more grippers the grippers moving together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/1554—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore
    • B23Q2003/155414—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising two or more grippers
    • B23Q2003/155425—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising two or more grippers pivotable
    • B23Q2003/155428—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising two or more grippers pivotable about a common axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/1554—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore
    • B23Q2003/155414—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising two or more grippers
    • B23Q2003/155425—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising two or more grippers pivotable
    • B23Q2003/155435—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising two or more grippers pivotable and linearly movable
    • B23Q2003/155446—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising two or more grippers pivotable and linearly movable with translation of the pivoting axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2210/00—Machine tools incorporating a specific component
    • B23Q2210/006—Curved guiding rails

Definitions

  • the present invention relates to the field of machine tools. It relates to a machine tool, in particular a universal milling machine according to the preamble of claim 1.
  • Such a machine tool is e.g. known from US-A-1, 991, 285.
  • the curved guide which is designed as a closed circle, not only results in a considerable expenditure of material and processing and assembly time, but also increases the outside dimensions of the machine and limits the space of the additional devices such as an automatic tool changer is available. In addition, access to the machining area of the machine in the area of the table is generally restricted.
  • the object is achieved by the entirety of the features of claims 1 and 20.
  • the essence of the invention is that the first arc guide is limited to a circular arc section open to one side.
  • the first curved guide preferably has approximately the shape of a semicircle, and the curved segment has a segment angle of approximately 90 °.
  • a preferred embodiment of the machine tool according to the invention is characterized in that a drive for moving the tool spindle is arranged on the first curved guide, which drive meshes with a round rack attached to the curved segment via a first pinion.
  • the drive comprises a first motor, which drives a drive shaft via a worm gear, if the drive shaft is toothed with the first pinion, if the drive shaft is helically toothed with the first pinion, and the helical gearing is axially adjustable to cancel the play, and if, in addition to the first tooth pinion, a second mechanically coupled and braced tooth pinion is arranged to eliminate the tooth play, which meshes with the round rack.
  • a second motor is fixedly arranged on the first sheet guide, which drives a third pinion via a gear, which third pinion meshes with the round rack and the round rack with a torque to compensate for the weight of the arc segment and the tool spindle.
  • the weight can also be relieved by a spiral spring system acting on the pinion.
  • a cross slide unit is arranged between the tool spindle and the arc segment, and for Adjustment of the cross slide unit in the two orthogonal axes, two linear drives each equipped with a motor and a spindle are provided.
  • a particularly simple and, in terms of functionality, favorable construction of the machine is obtained if the machine tool has an elongated machine bed on which the table is arranged, if a stand unit is attached to the machine bed on one long side, in particular screwed on, which extends upwards over the machining plane protrudes, and when the first sheet guide is arranged on a side of the stand unit which is transverse to the longitudinal direction of the machine bed.
  • the table can preferably be designed as a longitudinal table which can be moved in the longitudinal direction on the machine bed.
  • the tool spindle is a milling spindle
  • the milling spindle is integrated in a milling bar and is moved together with the milling bar.
  • the advantages of the compact construction of the machine tool according to the invention become particularly apparent when an automatic tool changer is provided on the machine tool. Due to the semicircular design of the curved guide, the open side of the semicircle is available as a space for the tool changer.
  • the tool changer preferably comprises a tool magazine and an exchange unit, which exchange unit transports tools between the tool magazine and the tool spindle.
  • the tools are held in the tool magazine with a first, predetermined orientation
  • the exchange unit has means with which the tools can be pivoted from the first orientation into a second orientation during transport from the tool magazine to the tool spindle, which corresponds to the respective orientation of the Tool spindle corresponds when changing the tool, or can be pivoted from the second to the first orientation during transport from the tool spindle to the tool magazine.
  • the exchange unit can be moved perpendicular to the pivoting plane of the tool spindle between the tool magazine and the tool spindle, and the pivoting means are designed in such a way that the tool can be pivoted in a plane parallel to the pivoting plane of the tool spindle.
  • the pivot means preferably include a second sheet guide in which a rotating unit with grippers for the tools is guided on a sheet.
  • a drive provided with a motor can be provided for moving the rotary unit, in which a pinion meshes with a round rack.
  • a preferred embodiment of the method according to the invention is characterized in that the tool changer comprises a tool magazine in which the tools are held with a first, predetermined orientation, and in that the tool changer transports the tools from the tool magazine to the tool spindle from the first orientation pivoted into a second orientation, which corresponds to the respective orientation of the tool spindle when changing the tool, or swivels back from the second orientation into the first orientation during transport from the tool spindle to the tool magazine.
  • FIG. 1A shows the plan view in the direction of the machine longitudinal axis from the direction of the tool magazine
  • FIG. 1C shows the plan view in the direction of the machine longitudinal axis from the opposite direction
  • FIGS. 1B and D show two different perspective side views
  • FIG. 2 shows an enlarged view of a section of the machine according to FIG. 1 with the drive for moving the tool spindle and the tool spindle with the cross slide unit;
  • FIG. 3 shows a simplified illustration of the internal structure of the drive for moving the tool spindle
  • FIG. 6 shows a perspective side view of the exchange unit according to FIG.
  • FIG. 7 shows a perspective side view of the arrangement of the exchange unit on the machine, with essential parts of the machine being omitted;
  • 9 shows a snapshot of a tool change process with the tool spindle at an angle; and 10 shows a snapshot of a tool change process with the tool spindle lying horizontally.
  • FIG. 1 shows different views of a preferred exemplary embodiment of a machine tool according to the invention in different partial figures.
  • 1A shows the top view in the direction of the machine longitudinal axis from the direction of the tool magazine
  • FIG. 1C shows the top view in the direction of the machine longitudinal axis from the opposite direction.
  • 1B and 1D show two different perspective side views.
  • the machine tool 10 which is preferably designed as a universal milling machine, comprises a stable, elongated machine bed 11, on which a longitudinal table 12 is arranged so as to be movable in the longitudinal direction.
  • the longitudinal table 12 can be a rigid table. However, it is also conceivable to provide a (rotatable) rotary table 67, as indicated in FIGS. 1B and 1D.
  • the longitudinal table 12 is mounted according to FIG. 9 on a slide 63 which can be moved in the direction of the machine longitudinal axis by means of roller shoes 64 on two parallel guides 54, 55.
  • a linear drive with a spindle 61 is provided for driving the carriage 63.
  • the longitudinal table 12 is designed in the usual way for clamping workpieces to be machined.
  • a vertical rectangular flange (62 in FIG. 7) is provided on the machine bed 11, on which a stand unit 13, which extends laterally outwards and upwards beyond the working plane of the longitudinal table 12, is screwed.
  • the stand unit 13 carries (in the case of the universal milling machine) a movable milling bar 17 in which the actual tool spindle 65 (FIG. 1 D) is accommodated.
  • the milling bar 17 is mounted on a cross slide unit 16 and by means of two linear drives, which according to FIG. 2 each comprise a motor 27, 30 (with gear) and a spindle 29, 31, in two orthogonal ones Movable axes.
  • the cross slide unit 16 is in turn mounted on an arc segment 15 which has a segment angle of approximately 90 °.
  • the arc segment 15 is movably supported in an arc guide 14 on a circular arc, which lies in a pivot plane oriented perpendicular to the longitudinal axis of the machine and has the longitudinal table 12 as the center.
  • the curved guide 14 which is arranged on a side of the stand unit 13 oriented perpendicular to the longitudinal axis of the machine, has the shape of a semicircle of approximately 180 ° and is open to the side of the machine bed 11 opposite the stand unit 13.
  • the arch guide 14 has two arch-shaped guides 35, 36 (FIG. 4) separated by a space on which the arch segment 15 runs.
  • the arch segment 15 is secured to the arch guide 4 by a retaining strip 37 which engages behind the lower guide 36 (FIG. 4).
  • a round toothed rack 21 (see also FIG. 2), which is screwed onto the curved segment 15, also serves to drive the curved segment 15.
  • the arc segment 15 is driven via a drive unit 22 which is arranged in a fixed manner on the arc guide 14 and which comprises a motor 24 which drives a first pinion (main pinion) 32 via a worm gear 25, which pinion (main gear) 32 21 combs.
  • a drive shaft 66 coming from the worm gear 25 is helically toothed in a gear 23 with the first toothed pinion 32, the helical toothing being axially adjustable to eliminate play.
  • a second pinion 33 is arranged in the gear 23 according to FIG. 3, which is mechanically coupled and clamped to eliminate the tooth play and also meshes with the round tooth length 21.
  • a two-motor 26, which drives a third pinion 34 via a gear 38, is arranged in a stationary manner on the first curved guide 14 according to FIGS. 2 and 3.
  • the third cog 34 also meshes with the round rack 21 and applies a torque to the round rack 21, with which the weight of the arc segment 15 and the tool spindle 65 comes into play. can be penalized.
  • another power source such as a coil spring system, can also be used as the power source.
  • the machine tool according to FIG. 1 additionally has an automatic tool changer 18 which is arranged at one end of the machine bed 11.
  • the tool changer 18 comprises a tool magazine 19 lying horizontally above the machining plane, in which a plurality of tools 59 are held hanging vertically downwards and can be transported past a removal point on a closed oval path at which a lifting device 60 is provided.
  • An exchange unit 20, which is shown in more detail in FIGS. 5 and 6, is provided for transporting the tools 59 between the tool magazine 19 and the tool spindle 65 accommodated in the milling beam 17.
  • the exchange unit 20 is constructed on a slide 39 which can be moved in the longitudinal direction of the machine by means of roller shoes 57, 58 on the same guides 54, 55 as the longitudinal table 12.
  • a linear drive is provided for the movement of the slide 39, which comprises a motor 41 fastened to a holding plate 40 with a flange-mounted gear and a spindle 42.
  • An upwardly extending arc 51 is fastened on the slide 39 in a plane lying parallel to the pivoting plane of the tool spindle 65.
  • the arc carries an arc guide 53 and a round rack 52 side by side on the one side.
  • a rotating unit 43 is movably supported on a circular arc by means of a bearing plate 50 and roller shoes 56.
  • a motor 49 is provided for the drive, which drives a toothed pinion which meshes with the round toothed rack 52.
  • the rotating unit 43 has a support arm 44 standing vertically in the basic position shown in FIGS. 5, 6, at the upper end of which two opposite, horizontal grippers 45, 46 are arranged so as to be rotatable about a vertical axis.
  • the grippers 45, 46 can be rotated through 180 ° about the vertical axis by means of two hydraulic cylinders 47, 48 arranged at the foot of the support arm 44.
  • the hydraulic cylinders 47, 48 actuate racks which mesh with a ring gear arranged on the support arm 44.
  • the pivotability of the rotating unit 43 achieved by the curved guide 53 ensures that the exchange unit 20 can always pull the tools 59 out of the tool magazine 19 in the same vertical orientation or hang them into the tool magazine 19, but during the changing process the tool into another (horizontal or oblique) can bring alignment that matches the respective orientation of the tool spindle 65. In this way, it is possible to replace the tool located in the tool spindle 65 without the tool spindle having to be moved back to a predetermined position.
  • FIG. 8 to 10 show several exemplary tool changing processes in a snapshot.
  • the tool spindle in the cutter bar 17 is vertical.
  • the tool 59 can be changed without the exchange unit 20 or the turning unit 43 having to perform a pivoting movement during the transfer process.
  • the cutter bar 17 is at an angle when the tool is changed.
  • the exchange unit 20 has to perform a swiveling movement on its way from the tool magazine 19 to the milling bar 17, so that the tools 59 can be exchanged unhindered.
  • the milling bar 17 lies horizontally.
  • the exchange unit 20 between the tool magazine 19 and the milling bar 17 must carry out the maximum pivoting movement by 90 °.
  • the entire procedure for changing a tool comprises the following steps:
  • the exchange unit 20 which is initially in a parking position, moves towards the tool magazine 19 in the longitudinal direction of the machine (FIG. 7).
  • the holding box (68 in FIG. 7) holding the tool 59 releases and is moved upwards by the lifting device 60. 4.
  • the exchange unit 20 moves with the "new" tool to the position of the
  • Tool spindle 65 wherein pivoting takes place at the same time when the tool spindle is inclined or horizontal. 5.
  • the other gripper 46 clicks into the “old” tool located in the tool spindle 65.
  • the rotating unit 43 rotates through 180 ° and exchanges the tools.
  • the exchange unit 20 moves back to the tool magazine 19, the rotating unit 43 being pivoted back into the vertical basic position at the same time.
  • the holding box 68 is moved down by the lifting device 60 and the old tool is clamped.
  • the exchange unit 20 moves back into its parking position.
  • the tool magazine 19 positions a new tool at the removal point below the lifting device 60.
  • Known universal milling machines are in most cases equipped with a pure horizontal or vertical milling spindle. If a combination is required, either vertical milling heads or manually / automatically distributable horizontal / vertical (H / V) milling heads are used.
  • the attached milling heads have the disadvantage of the large amount of time required for the changeover.
  • the automatic H / V ⁇ milling heads can only be positioned in either the horizontal or vertical position. In exceptional cases, intermediate positions can only be positioned in discontinuous steps of 1 ° or 2.5 °, whereby the major disadvantage which has to be accepted in the inclined position of the spindle. To do this, the traversing axes must make corrections.
  • the milling head normally has to be returned to a preferred spindle position again and again. If both spindle positions are to be fed, the tool change device must be designed accordingly. With intermediate positions of the milling head, the travel axes are not parallel to the spindle axis in these systems. For an infeed axially to the spindle, 2 or 3 axes must always be adjusted. This is practically impossible when operated manually.
  • a cross-slide system for the vertical and transverse axes is attached to an arcuate segment with a milling bar with an integrated milling spindle and is brought into the horizontal position by means of an arcuate movement in an arcuate guide by 90 ° (FIG. 10).
  • the functions of the vertical axis and the transverse axis are interchanged. If any intermediate position on the curved guide is approached, the axial adjustment of the spindle axis always moves perpendicular to these axes. Compensatory movements are not to be carried out.
  • the longitudinal table is adjusted horizontally on the machine bed.
  • the height of the table does not change. Compared to swivel tables, this principle can accommodate a high workpiece weight. Even bulky workpieces can be clamped.
  • a stand unit screwed to the rear of the machine bed is provided with a curved guide on the side.
  • the cross slide placed on the arch segment unit with the cutter bar is adjusted in this curved guide from vertical to horizontal position transversely to the longitudinal table axis.
  • the sheet guide is driven by a manual or motorized drive via pinion and round rack.
  • the backlash can be eliminated using a second mechanically coupled and tensioned pinion.
  • a further spring pinion can be used to reduce the weight by means of a spiral spring system or an electric motor.
  • the machine can be used with and without an automatic tool changer. If a tool changer is used, - the tool magazine with the tool feeder system is placed outside the work area at the end of the machine bed. The new tool is already moved radially out of the magazine into a waiting position during the machining time. When the new tool is actually brought to the milling spindle, which is oriented differently depending on the angle adjustment, the tool is also brought into the corresponding angular position on a (second) curved guide (FIGS. 8 to 10).
  • Support arm 46 grippers, 48 hydraulic cylinders

Abstract

La présente invention concerne une machine-outil (10), notamment une fraiseuse universelle, qui comprend une table (12) conçue pour fixer une pièce à usiner dans un plan d'usinage horizontal, ainsi qu'une broche d'outil (65) montée dans un plan de pivotement perpendiculaire au plan d'usinage, sur une orbite circulant autour de la table (12) tenant lieu de centre, continuellement mobile entre une position verticale et une position horizontale. Cette broche d'outil (65) est fixée sur un segment de courbe (15) qui est guidé mobile sur une courbe dans un premier dispositif de guidage courbe (14). L'objectif de la présente invention est de mettre au point une telle machine-outil (10) qui permette de réaliser des économies d'espace du point de vue de la construction, tout en diminuant la complexité de fabrication et de montage et en améliorant l'accessibilité à l'espace de travail. A cette fin, le premier dispositif de guidage courbe (14) présente la forme d'une section d'arc de cercle qui entoure la table (12) seulement sur un côté.
PCT/CH2003/000213 2002-04-05 2003-04-02 Machine-outil, notamment fraiseuse universelle, et procede pour faire fonctionner cette machine WO2003084712A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003212179A AU2003212179A1 (en) 2002-04-05 2003-04-02 Machine-tool comprising a tool spindle which can be displaced on an arc

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10215195A DE10215195A1 (de) 2002-04-05 2002-04-05 Werkzeugmaschine, insbesondere Universalfräsmaschine, sowie Verfahren zum Betrieb einer solchen Maschine
DE10215195.4 2002-04-05

Publications (2)

Publication Number Publication Date
WO2003084712A2 true WO2003084712A2 (fr) 2003-10-16
WO2003084712A3 WO2003084712A3 (fr) 2003-12-18

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Country Status (3)

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AU (1) AU2003212179A1 (fr)
DE (1) DE10215195A1 (fr)
WO (1) WO2003084712A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1985410A1 (fr) * 2007-04-27 2008-10-29 IEMCA Giuliani Macchine Italia S.p.A. Machine-outil de type transfert rotatitf avec changement automatique d'outil
CN104368983A (zh) * 2014-11-24 2015-02-25 昆山市佰奥自动化设备科技有限公司 自动铣弧设备
CN114505712A (zh) * 2022-02-12 2022-05-17 徐州正天科技有限公司 一种连续式绝对值编码器组件加工用弧形开槽设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006002863A1 (de) * 2006-01-19 2007-07-26 Emag Holding Gmbh Werkzeugmaschine zur Bearbeitung von Werkstücken mit großen Abmessungen

Citations (3)

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US1991285A (en) * 1932-09-02 1935-02-12 Lindner Herbert Machine tool with rotary tool
US2539107A (en) * 1948-04-28 1951-01-23 Charles W Sectish Grinding machine
US5943750A (en) * 1997-12-23 1999-08-31 The Regents Of The University Of Michigan Reconfigurable machine tool

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Publication number Priority date Publication date Assignee Title
US1991285A (en) * 1932-09-02 1935-02-12 Lindner Herbert Machine tool with rotary tool
US2539107A (en) * 1948-04-28 1951-01-23 Charles W Sectish Grinding machine
US5943750A (en) * 1997-12-23 1999-08-31 The Regents Of The University Of Michigan Reconfigurable machine tool

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1985410A1 (fr) * 2007-04-27 2008-10-29 IEMCA Giuliani Macchine Italia S.p.A. Machine-outil de type transfert rotatitf avec changement automatique d'outil
CN104368983A (zh) * 2014-11-24 2015-02-25 昆山市佰奥自动化设备科技有限公司 自动铣弧设备
CN104368983B (zh) * 2014-11-24 2016-08-24 昆山市佰奥自动化设备科技有限公司 自动铣弧设备
CN114505712A (zh) * 2022-02-12 2022-05-17 徐州正天科技有限公司 一种连续式绝对值编码器组件加工用弧形开槽设备

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