EP2498949A1 - Procédé et machine-outil pour l'usinage simultané de deux pièces - Google Patents

Procédé et machine-outil pour l'usinage simultané de deux pièces

Info

Publication number
EP2498949A1
EP2498949A1 EP10779277A EP10779277A EP2498949A1 EP 2498949 A1 EP2498949 A1 EP 2498949A1 EP 10779277 A EP10779277 A EP 10779277A EP 10779277 A EP10779277 A EP 10779277A EP 2498949 A1 EP2498949 A1 EP 2498949A1
Authority
EP
European Patent Office
Prior art keywords
workpieces
workpiece
tool
machine
spindle
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.)
Withdrawn
Application number
EP10779277A
Other languages
German (de)
English (en)
Inventor
Achim Feinauer
Dieter Fink
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.)
Stama Maschinenfabrik GmbH
Original Assignee
Stama Maschinenfabrik GmbH
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 Stama Maschinenfabrik GmbH filed Critical Stama Maschinenfabrik GmbH
Publication of EP2498949A1 publication Critical patent/EP2498949A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q39/04—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being arranged to operate simultaneously at different stations, e.g. with an annular work-table moved in steps
    • 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
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
    • B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
    • B23Q1/626—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding 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
    • B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q39/02—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
    • B23Q39/021—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like
    • B23Q39/022—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with same working direction of toolheads on same workholder
    • 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
    • B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q2039/006—Machines with multi-spindles

Definitions

  • the present invention relates to a method for simultaneous machining of at least two workpieces with a machine tool for machining, comprising a workpiece clamping device for clamping the workpieces and at least two tool spindles, synchronous with each other and relative to the workpiece clamping device in three mutually orthogonal machine axes movable and parallel side by side along a first of the machine axes are arranged with a center distance from each other.
  • the present invention further relates to a machine tool for the simultaneous machining of at least two workpieces, with a workpiece clamping device for clamping at least two workpieces and at least two tool spindles for receiving processing tools, wherein the two tool spindles synchronously with each other and relative to the workpiece clamping device in three mutually orthogonal machine axes are movable and arranged parallel to each other along a first of the machine axes with a center distance to each other,
  • the known machine tool has a spindle head with two mutually parallel tool spindles, which are mounted on a traveling column in a conventional manner so that they can be compared to the workpieces in the three orthogonal linear axes X, Y and Z moved.
  • the tool spindles are either rigidly coupled together, or they are driven synchronously with each other.
  • the known machine tool has only limited travel paths in the three linear axes, in particular, the travel in the y-axis is limited.
  • Another advantage of the double-spindle machine tool is that workpieces can be made so to speak in pairs to match each other, since the effects of the temperature response, etc. are identical to the two simultaneously manufactured workpieces.
  • the present invention has the object, the known machine tool and the known method such that while maintaining the high machining accuracy and high workpiece throughput and workpieces can be edited, which after clamping in the direction of the y- Axle extend over a length which is greater than the relative travel between the workpiece spindles and the workpiece clamping device.
  • this object is achieved in a method of the type mentioned by the steps: a) clamping at least two workpieces on a workpiece table which is at least by 180 ° back and forth about a pivotable about the first machine axis pivot axis, such that the workpieces extend with their longitudinal axes parallel to each other and perpendicular or obliquely to the first machine axis and perpendicular to the pivot axis, b) time- and contour-identical machining of two workpieces with clamped in the two tool spindles processing tools, wherein a first workpiece with the c) pivoting of the workpiece table by 180 °, and d) spindle machining of only one and then the other workpiece, wherein the first workpiece is machined with the first tool spindle, and the second with the second Maschinenst ückspindel.
  • this object is further achieved in a machine tool of the type mentioned above in that the Maschinen Swissspannvorrich- Device is designed as a tool table, which can be pivoted to and fro about a pivot axis perpendicular to the first machine axis by at least 180 °.
  • the workpiece clamping device is designed as a turntable, so as pivotable about a pivot axis tool table, as he is otherwise used in machine tools having a work area and a placement area, the two areas by a provided on the workpiece table splash guard against each other are separated, so that the assembly area can be equipped with a workpiece to be machined, while at the same time in the work area a workpiece is processed.
  • shuttle table workpiece table now the workpieces are clamped so that they do not extend parallel to the X direction, they extend because of their length out of the work area.
  • the workpiece table is pivoted about 180 ° about its pivot axis, so that now the pivoted into the work area, previously unprocessed areas of the workpieces are available for processing.
  • the workpieces are clamped in their assignment to the tool spindles, so that a highly accurate machining is only possible if the tool spindle and workpiece remain associated with each other.
  • the inventors have recognized that the travel of a double-spindle machine tool in the x-direction, ie transverse to the longitudinal direction of the clamped Workpieces can be designed sufficiently to allow this single-spindle machining.
  • one part of the machining is done with double spindle, while another part of the machining is done sequentially and with one spindle.
  • each machining is done with double-spindle, while after pivoting single-spindle work is done when high accuracy is required, otherwise it may also be two-spindle.
  • the workpieces are not parallel to the x-direction, which has the largest travel, but must have in the x-axis to each other the distance that the machining spindles have each other in the x-direction. If the workpieces are perpendicular to the X axis, only the travel in the y direction determines the maximum length of the areas of the workpieces to be machined in a rotational position of the workpiece table. But it is also possible to lay the workpieces obliquely to the x-axis, so that increases the maximum length to be machined, at an angle of 45 °, for example. By 2, that is about 1.4 times. The problem underlying the invention is completely solved in this way.
  • step f) it is preferred if the workpieces are rotated in a step f) about their respective longitudinal axes, and that thereafter only step d), then step c) and then step b) are repeated.
  • the advantage here is that more pages of the workpieces can be edited. Due to the rotation about its longitudinal axis, the workpieces are still reversed to the tool spindles, so that the first single-spindle machining must be done before the assignment between workpieces and tool spindles is correct again after pivoting the turntable, so that doppelspinde- lig can be worked.
  • step f) it is preferable if the workpieces are rotated in a step f) about a center axis extending parallel to their respective longitudinal axes, and that thereafter step b), then step c) and then step d) are repeated.
  • step f) it is preferred if the workpieces are rotated in a step f) about a perpendicular to their respective longitudinal axes and perpendicular to the pivot axis extending center axis, and that thereafter step d), then step c) and then step b) be repeated.
  • step f) and the subsequent steps in a corresponding order are repeated until all sides of the workpieces have been processed.
  • the new machine tool preferably has a travel path in the direction of the first machine axis which is at least twice as large as the center distance between the two tool spindles.
  • Four workpieces can also be processed with two tool spindles, when the workpieces are clamped on a common turntable, but between each pair of two workpieces in the X direction, a distance is provided which is greater than the center distance of the tool spindles to each other.
  • both pairs of workpieces can be machined successively double-spindle, if the accuracy requirements allow. If higher accuracy is required, all workpieces can be machined one spindle with the originally assigned tool spindle in succession, with the respective idling tool either on the right or left on the turntable or between the two pairs of workpieces, where it can join the travel movements without being engaged.
  • Fig. 1 is a schematic front view of the new machine tool on which the new method is performed
  • FIG. 2 shows a schematic side view of the machine tool from FIG. 1, seen from the left in FIG. 1;
  • Fig. 3 is a plan view of the workpiece table of the machine tool
  • Fig. 4 - 9 in a view like Fig. 3 different stages of processing of the clamped on the workpiece table workpieces.
  • a machine tool 10 is shown schematically and not to scale in a front view, which has a spindle head 11 which is mounted on a schematically indicated machine frame 12. Further, a workpiece clamping device in the form of a workpiece table 14 is provided, relative to which the spindle head 11 in the usual manner in three mutually orthogonal machine axes X, Y and Z can be moved, which are defined by a next to the machine tool 10 indicated coordinate system.
  • two tool spindles 15, 16 are arranged, each of which can receive a machining tool 17, 18, which is rotationally driven about its own axis of rotation 19, 21.
  • the workpiece table 14 is designed as a turntable and can be pivoted about its vertically extending pivot axis 24, which is indicated by an arrow 25.
  • the machine tool shown in the figures is designed as a vertical machine, the tool spindles 15, 16 are thus aligned vertically. It is also possible to design the new machine tool as a horizontal machine and to form the tool spindles 15, 15, so to speak, lying down, without losing the advantages of the new method.
  • the workpiece table 14 is then designed to be rotatable about a horizontal pivot axis. This pivoting of the workpiece table 14 is used in the initially mentioned prior art to move workpieces from the working area of the machine tool in the assembly area, and vice versa.
  • a splash guard wall is generally provided, which divides the workpiece table 14 in the working area facing the spindle and the mounting area facing away from the spindle.
  • Such a splash guard wall is not provided in the new machine tool 10, so that the method according to the invention can be carried out on it, which will be explained in detail below with reference to FIGS. 3 to 9.
  • the two axes of rotation 19, 21 of the tool spindles 15, 16 have a distance 26 to each other. At this distance 26 and the two workpieces 22 and 23 are spaced from each other in the x-axis, while they are parallel to each other in the y-axis.
  • the spindle head 11 ' is shown in dashed lines in Fig. 2 in its outermost position in the y-direction.
  • the dashed line in Fig. 1 left tool spindle 15 'and a recorded tool 17' is shown.
  • FIG. 2 The situation of Fig. 2 is shown schematically again in Fig. 3, where the workpiece table 14 is shown in plan view, so that the two workpieces 22 and 23 can be seen, with their areas to be processed 28 and 29 above the working space limit 27 are, so that these areas 28, 29 can be edited with the also schematically indicated tool spindles 15, 16.
  • the workpieces 22, 23 are parallel to the y-axis, but they can also be at an angle obliquely to the x-axis, whereby the length of the in a rotational position of the workpiece table 14 to be processed areas 28, 29th extended according to the angle.
  • the work table 14 pivots about its pivot axis 24 along the arrow 25 by 180 °, so that the situation of FIG. 4 is present, where now unprocessed areas 31 and 32 of the workpieces 22 and 23 are above the working space limit 27 and can now be edited by the tool spindles 15 and 16.
  • the workpieces 22 and 23 are processed by the rigidly interconnected tool spindles 15 and 16 in time and the same shape, is in the processing after pivoting, as shown in FIG 4, from double-spindle machining to single-spindle machining.
  • FIGS. 5 and 6 The resulting consequences are shown in FIGS. 5 and 6.
  • the tool spindles 15 and 16 are moved in the x-direction so that with the tool spindle 16, the area 32 of the workpiece 23 is processed. This is shown in FIG.
  • the tool spindles 15, 16 only about the predetermined distance between them 26 to the left and right with respect to the workpiece table 14 must be moved. This applies if the workpieces 22, 23 are parallel to the y-axis. On the other hand, if they are inclined, the traversing range in the x direction must be larger in accordance with the angle.
  • FIGS. 4 to 6 the processed portions of the workpieces 22 and 23 are shown hatched, the portions still to be processed are not shown hatched.
  • an overlapping region is indicated, which can be processed in the two pivotal positions of the workpiece table 14, as they correspond to FIG. 3 on the one hand and FIGS. 4 to 6 on the other hand, so that the connection between the two regions 28 and 31 or 29 and 32 can be machined with the required accuracy.
  • Fig. 6 it can be seen that the workpiece 22 is mounted at its end faces in rotary tables 35 and 36, through which the workpiece 22 can be pivoted about its longitudinal axis 37.
  • the rotary tables 35 and 36 can also be seen in Fig. 1.
  • the workpiece 23 is clamped at its end faces in rotary tables 38 and 39, through which the workpiece 23 can be pivoted about its longitudinal axis 41.
  • the workpiece 22 is first of all machined with the tool spindle 15, whereupon, according to FIG. 8, the workpiece 23 is machined with the tool spindle 16. Thereafter, the workpiece table 14 is pivoted back about its pivot axis 24, which is indicated by the arrow 25.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Abstract

L'invention concerne un procédé pour l'usinage simultané d'au moins deux pièces (22, 23) avec une machine-outil (10) pour l'usinage avec enlèvement de copeaux, qui présente un dispositif de serrage de pièce pour le serrage de pièces (22, 23) et au moins deux broches d'outil (15, 16), lesquelles peuvent être déplacées de façon synchrone l'une avec l'autre et par rapport au dispositif de serrage de pièce dans trois axes de machine (x, y, z) perpendiculaires entre eux et sont disposées parallèlement les unes à côté des autres le long d'un premier (x) des axes de machine avec une distance de centre à centre (26). Ce procédé comporte les étapes suivantes : a) serrage de deux pièces (22, 23) sur une table porte-pièce (14), qui peut être basculée d'un côté et de l'autre d'au moins 180 ° autour d'un axe de pivotement (24) agencé perpendiculairement au premier axe de machine (x), de telle sorte que les pièces (22, 23) s'étendent avec leurs axes longitudinaux parallèlement entre elles et perpendiculairement ou obliquement par rapport au premier axe de machine (x) et perpendiculairement à l'axe de pivotement (24), b) usinage simultané et identique au niveau du contour des deux pièces (22, 23) avec des outils d'usinage (17, 18) encastrés dans les deux broches d'outil (15, 16), la première pièce (22) étant usinée avec la première broche d'outil (15), et la seconde pièce (23), avec la seconde broche d'outil (16), c) basculement de la table porte-pièce (14) de 180 °, et d) usinage mono-broche d'abord de la première pièce et ensuite de l'autre pièce (15, 16), la première pièce (22) étant usinée avec la première broche d'outil (15), et la seconde pièce (23), avec la seconde broche d'outil (16).
EP10779277A 2009-11-12 2010-11-04 Procédé et machine-outil pour l'usinage simultané de deux pièces Withdrawn EP2498949A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910054095 DE102009054095A1 (de) 2009-11-12 2009-11-12 Verfahren zur gleichzeitigen Bearbeitung von zwei Werkstücken
PCT/EP2010/066816 WO2011057941A1 (fr) 2009-11-12 2010-11-04 Procédé et machine-outil pour l'usinage simultané de deux pièces

Publications (1)

Publication Number Publication Date
EP2498949A1 true EP2498949A1 (fr) 2012-09-19

Family

ID=43602818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10779277A Withdrawn EP2498949A1 (fr) 2009-11-12 2010-11-04 Procédé et machine-outil pour l'usinage simultané de deux pièces

Country Status (4)

Country Link
EP (1) EP2498949A1 (fr)
CN (1) CN102695583A (fr)
DE (1) DE102009054095A1 (fr)
WO (1) WO2011057941A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013002793A1 (de) * 2012-03-02 2013-09-05 Lang Spannwerkzeuge GmbH Vorrichtung und Verfahren zur Bearbeitung von Werkstücken

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
DE3734722C1 (de) 1987-10-14 1988-11-24 Chiron Werke Gmbh Werkzeugmaschine mit Spritzschutzelementen
DE3533089C1 (de) 1985-09-17 1987-04-09 Chiron Werke Gmbh Werkzeugmaschine mit Spritzschutzelement
DE4301393C2 (de) * 1993-01-20 1996-05-23 Witzig & Frank Turmatic Gmbh Rundtakt-Werkzeugmaschine
DE4306093C2 (de) 1993-02-27 1996-08-22 Chiron Werke Gmbh Werkzeugmaschine mit Spritzschutzwänden
IT233992Y1 (it) * 1994-08-03 2000-02-16 Riello Macchine Utensili Spa Perfezionamento nelle macchine utensili transfer a tavola rotante
CN2240409Y (zh) * 1995-12-15 1996-11-20 谢瑞生 双工位半自动攻丝机
DE10119175A1 (de) * 2001-04-10 2002-10-17 Heller Geb Gmbh Maschf Vorrichtung zur Bearbeitung von Werkstücken sowie Verfahren zur Bearbeitung von Werkstücken unter Verwendung einer solchen Vorrichtung
DE10330909B4 (de) 2003-07-07 2007-02-08 Stama Maschinenfabrik Gmbh Werkzeugmaschine und Verfahren zur spanabhebenden Bearbeitung von Werkstücken
DE102005031933B4 (de) * 2005-07-08 2007-07-26 Keppler, Karl Werkzeugmaschine und Verfahren zur Fertigung
JP5030606B2 (ja) * 2007-01-30 2012-09-19 ヤマザキマザック株式会社 マシニングセンタ

Non-Patent Citations (1)

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See references of WO2011057941A1 *

Also Published As

Publication number Publication date
CN102695583A (zh) 2012-09-26
WO2011057941A1 (fr) 2011-05-19
DE102009054095A1 (de) 2011-05-19

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