WO2014102689A1 - Tour vertical doté d'une broche de saisie mobile le long d'une trajectoire circulaire - Google Patents

Tour vertical doté d'une broche de saisie mobile le long d'une trajectoire circulaire Download PDF

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Publication number
WO2014102689A1
WO2014102689A1 PCT/IB2013/061212 IB2013061212W WO2014102689A1 WO 2014102689 A1 WO2014102689 A1 WO 2014102689A1 IB 2013061212 W IB2013061212 W IB 2013061212W WO 2014102689 A1 WO2014102689 A1 WO 2014102689A1
Authority
WO
WIPO (PCT)
Prior art keywords
axis
rotation
drum
workpiece
carrying
Prior art date
Application number
PCT/IB2013/061212
Other languages
English (en)
Inventor
Aldo Servetto
Original Assignee
Siecab S.R.L.
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 Siecab S.R.L. filed Critical Siecab S.R.L.
Priority to CN201390000147.XU priority Critical patent/CN203956637U/zh
Publication of WO2014102689A1 publication Critical patent/WO2014102689A1/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
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/04—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
    • B23Q7/047—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers the gripper supporting the workpiece during machining
    • 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
    • B23Q39/042—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 with circular arrangement of the sub-assemblies

Definitions

  • the present invention relates generally to a vertical lathe comprising at least one workpiece-carrying spindle formed as an inverted vertical spindle (typically known as a pick-up spindle). More specifically, the present invention relates to a vertical lathe of the type mentioned above, further comprising a base and a drum supported by the base rotatably about a vertical axis of rotation, wherein each workpiece-carrying spindle is mounted on the drum in such a manner that its axis is movable together with the drum along a circular path having its centre on the vertical axis of rotation of the said drum, as specified in the preamble of independent Claim 1.
  • each workpiece-carrying spindle is rotatable about its axis (and therefore about an axis of rotation parallel to the axis of rotation of the drum) and is also mounted on the drum so as to be displaceable in the vertical direction (and therefore along a direction parallel both to its axis of rotation and to the axis of rotation of the drum).
  • Each workpiece-carrying spindle is provided with a respective clamping device for clamping a workpiece to be machined.
  • a plurality of tool-carrying devices are mounted on the base and may be formed ei- ther as rotating tool-carrying turrets, in particular each arranged with its axis of rotation in a horizontal plane (and therefore in a plane perpendicular to the axis of rotation of the drum), or as tool-carrying heads each able to hold a single tool.
  • the tool-carrying devices are placed substantially along a circumference vertically aligned with the circumference along which the axis of each workpiece-carrying spindle moves, i.e.
  • the workpiece-carrying spindle While the workpiece-carrying spindle, and along with it the workpiece being machined, moves vertically downwards or upwards with respect to the tool, it also moves along a circular path having its centre on the axis of rotation of the drum so as to bring the workpiece into contact with the tool and machine it to the desired shape.
  • the rotary movement of the workpiece-carrying spindle about the axis of rotation of the drum replaces therefore the translatory movement along the X axis of the conventional lathes.
  • the tools carried by the tool-carrying devices may be equally well fixed tools or rotary tools, so that the lathe is also able to perform machining operations other than turning.
  • One of the main advantages of such a type of vertical lathe consists in the greater amount of space available for the tools, compared to conventional vertical lathes, allowing a greater number of tools to be mounted and therefore a greater flexibility, i.e. greater capacity to carry out different operations, to be obtained.
  • a further advantage of such a type of vertical lathe consists in the fewer problems caused by thermal drift, i.e. in the reduced impact of the variations in temperature on the precision of the machining operations performed.
  • the invention is based on the idea of providing a vertical lathe of the type specified in the preamble of independent Claim 1 with at least one machining unit and at least one counter-head which are mounted on the base, wherein the machining unit comprises a tool-carrying turret or head, the axis of which is oriented horizontally and is located at a distance from the axis of rotation of the drum smaller than the radius of the circumference along which the at least one workpiece-carrying spindle is movable, and movement means designed to move the tool-carrying turret or head relative to the base and to the drum at least along the direction of its axis, and wherein the counter-head comprises a clamping device for clamping a workpiece to be machined, the axis of said clamping device being oriented vertically and being located at a distance from the axis of rotation of the drum equal to the radius of the circumference along which the at least one workpiece-carrying spindle is movable, and motor means for
  • the vertical lathe according to the present invention may for example perform a machining operation by means of the machining unit, or by means of one of the machining units, on the workpiece carried by the counter-head, or by one of the counter-heads, while the workpiece-carrying spindle (or one of the workpiece-carrying spindles) picks up a new workpiece to be machined and while the lathe performs one or more machining operations on this new work- piece using the tools carried by the tool-carrying devices mounted on the base.
  • the vertical lathe according to the present invention is thus able to work as a dual-spindle lathe.
  • the vertical lathe according to the present invention is able to carry out machining operations both on one side of the work- piece, using as clamping device the clamping device of the workpiece-carrying spindle (or of one of the spindles) on the drum and as tools the tools carried by the tool-carrying devices on the base, and on the opposite side of the workpiece, using as clamping device the clamping device of the counter-head (or of one of the counter-heads) on the base and as tools the tools carried by suitable tool-carrying devices mounted on the drum.
  • Figures 1 and 2 are respectively a side elevation view, partially sectioned, and a top plan view, which show in schematic form a vertical lathe according to an embodiment of the present invention, in which the lathe comprises a dual-axis machining unit with tool- carrying turret; and
  • Figures 3 and 4 are respectively a side elevation view, partially sectioned, and a top plan view, which show in schematic form a vertical lathe according to a further embodiment of the present invention, in which the lathe comprises a dual-axis machining unit with hob-carrying head.
  • a vertical lathe according to the present invention is generally indicated 10.
  • the vertical lathe 10 (referred to below, for the sake of simplicity, merely as lathe) comprises a base 12, a drum 14 supported by the base 12 so as to be ro- tatable about an axis of rotation z oriented vertically, and motor means (not shown in the drawings since of the type known per se and in any case not relevant for the purposes of the present invention) for rotationally driving the drum 14 about the axis of rotation z.
  • the drum 14 has, mounted thereon, a workpiece-carrying spindle 16 formed as an inverted vertical spindle or pick-up spindle, i.e. a spindle having its axis of rotation (indicated zl) oriented vertically and having its clamping device (indicated 18) directed downwards.
  • the lathe 10 has a single workpiece-carrying spindle 16, but could however have several workpiece-carrying spindles, preferably arranged equally spaced angularly and with the respective axes of rotation zl arranged at the same distance from the axis of rotation z of the drum 14.
  • the workpiece-carrying spindle 16 also rotates about this axis and therefore its axis of rotation zl moves rigidly together with the drum 14 along a circular path having its centre on the axis of rotation z of the latter and a radius equal to the distance between the axes of rotation z and zl .
  • the workpiece-carrying spindle 16 is also mounted on the drum 14 by means of a slide 20 so as to be displaceable in the vertical direction.
  • the workpiece-carrying spindle 16 further comprises motor means 22 (only schematically shown in Figures 1 and 3) for rotationally driving the clamping device 18 so as to define the cutting speed.
  • Motor means (not shown) for controlling displacement of the slide 20, and along with it of the workpiece-carrying spindle 16, in the vertical direction, are associated with the said slide.
  • a plurality of tool-carrying devices 24 are mounted on the base 12 and can be formed either as rotary tool-carrying turrets, in particular each arranged with its axis of rotation in a horizontal plane (and therefore in a plane perpendicular to the axis of rotation of the drum), or as tool-carrying heads each able to hold a single tool.
  • the tool-carrying devices 24 are located substantially along a circumference (indicated C in Figures 2 and 4) vertically aligned with the circumference along which the axis of rotation zl of the workpiece-carrying spindle 16 moves.
  • Turning of the workpiece carried by the workpiece-carrying spindle 16 is performed using the rotational movement of the drum 14, and therefore of the axis of rotation zl of the said spindle, about its axis of rotation z and the translational movement of the said spindle in the vertical direction in order to control the feeding and depth of the turning operation.
  • the workpiece-carrying spindle 16 and along with it the workpiece being machined moves vertically downwards or upwards relative to the tool, it also moves along a circular path having its centre on the axis of rotation z of the drum 14 and radius equal to the distance between the axes of rotation z and zl so as to bring the workpiece into contact with the tool and machine it to the desired shape.
  • the rotary movement of the workpiece-carrying spindle 16 about the axis of rotation z of the drum 14 therefore replaces the translational movement along the X axis of the conventional lathes.
  • the tools carried by the tool-carrying devices 24 may be equally well fixed tools or rotary tools, so that the lathe 10 is also able to perform machining operations other than turning.
  • the lathe 10 also comprises a counter-head 26 fixed to the base 12 so as to clamp the workpiece to be machined and allow machining thereof by means of tools (not shown) car- ried by tool-carrying devices (also not shown) fixed to the drum 14.
  • the lathe 10 has a single counter-head 26, but could also have a greater number thereof.
  • the counter-head 26 comprises a clamping device 28 for clamping at the bottom a workpiece to be machined.
  • the axis of rotation (indicated z2) of the clamping device 28 is oriented vertically and, as shown in Figures 2 and 4, is located at a distance from the axis of rotation z of the drum 14 equal to the radius of the circumference along which the workpiece-carrying spindle 16 is movable, i.e. equal to the distance between the axis of rotation z of the drum 14 and the axis of rotation zl of the workpiece- carrying spindle 16.
  • the counter-head 26 further comprises motor means (not shown in detail) for rotationally driving the clamping device 28 about its axis of rotation z2.
  • the lathe 10 is able to perform machining operations both on one side of the workpiece, by clamping the workpiece by means of the clamping device 18 of the workpiece-carrying spindle 16, and on the opposite side of the workpiece, by clamping the workpiece by means of the clamping device 28 of the counter-head 26.
  • the lathe 10 also comprises a machining unit 30 mounted on the base 12.
  • the lathe 10 has a single machining unit 30, but could also have a greater number thereof.
  • the machining unit 30 comprises a tool-carrying turret or head 32, the axis of which (indicated y) is oriented horizontally and is located at a distance from the axis of rotation z of the drum 14 smaller than the radius of the circumference along which the workpiece-carrying spindle 16 is movable, i.e. smaller than the distance between the axis of rotation z of the drum 14 and the axis of rotation zl of the work- piece-carrying spindle 16.
  • the tool-carrying turret or head 32 is supported by a support structure 34 which is mounted on a horizontal slide 36 so as to be displaceable along the direction of the axis y.
  • the horizontal slide 36 has, associated therewith, motor means 38 designed to control displacement of the horizontal slide 36 and, along with it, of the assembly formed by the support structure 34 and by the tool-carrying turret or head 32, rela- tive to the base 12 along the direction of the axis y.
  • the tool-carrying turret or head 32 is formed as a rotary turret which is supported rotatably about its axis y and carries a plurality of tools 40. Moreover, in this embodiment, the tool-carrying turret or head 32 is mounted on the support structure 34 by means of a vertical slide 42 so as to be displaceable along a vertical direction (axis z3).
  • the vertical slide 42 has, associated therewith, motor means 44 for controlling the translational movement of the vertical slide 42 and, along with it, of the tool-carrying turret or head 32, relative to the base 12 along the direction of the axis z3.
  • the tool-carrying turret or head 32 could be vertically fixed and therefore have a single degree of freedom of horizontal displacement along the direction of the axis y.
  • the tool-carrying turret or head 32 carries a hob 46 by means of which the lathe 10 is able to form teeth both on workpieces carried by the workpiece-carrying spindle 16 and on workpieces carried by the counter-head 26.
  • the tool-carrying turret or head 32 is mounted on the support structure 34 by means of a vertical slide 42 operated by motor means 44 for moving along the direction of the axis z3.
  • the vertical lathe according to the present invention is able to work as a dual-spindle lathe, namely is able to machine simultaneously two workpieces.
  • the workpiece being machined may be transferred from the clamping device of the workpiece-carrying spindle to the clamping device of the counter-head.
  • the drum may pick up a new workpiece, clamping it by means of the clamping device of the workpiece-carrying spindle, and perform machin- ing operations on this workpiece using the tools carried by the tool-carrying devices mounted on the base.

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

Abstract

La présente invention concerne un tour vertical (10) qui comprend : une base (12), un tambour (14) supporté par la base (12) de façon rotative autour d'un axe vertical de rotation (z), au moins une broche porteuse de pièce à usiner (16) formée comme broche verticale inversée, une pluralité de dispositifs porte-outil (24) montés sur la base (12) de sorte à permettre aux outils respectifs d'usiner une pièce à usiner supportée par la broche porteuse de pièce à usiner (16), et au moins une unité d'usinage (30) ainsi qu'au moins une contre-tête (26) qui est montée sur la base (12). La broche porteuse de pièce à usiner (16) est montée sur le tambour (14) de sorte que son axe de rotation (z1) est mobile avec le tambour (14) le long d'une trajectoire circulaire ayant son centre sur l'axe de rotation (z) du tambour (14) et de sorte que ladite broche porteuse de pièce à usiner (16) est également mobile dans une direction verticale (z1). Chaque unité d'usinage (30) comprend une tourelle ou une tête porte-outil (32), dont l'axe (y) est orienté horizontalement et se trouve à une distance de l'axe de rotation (z) du tambour (14) inférieure à la distance entre l'axe de rotation (z) du tambour (14) et l'axe de rotation (z1) de la ou des broches porteuses de pièce à usiner (16), et un moyen de déplacement (36, 38, 42, 44) conçu pour déplacer la tourelle ou la tête porte-outil (32) par rapport à la base (12) et au tambour (14) au moins le long de son axe (y). Chaque contre-tête (26) comprend un dispositif de serrage (28) permettant de serrer une pièce à usiner devant être usinée, l'axe (z2) dudit dispositif de serrage (28) étant orienté verticalement et situé à une distance de l'axe de rotation (z) du tambour (14) sensiblement égale à la distance entre l'axe de rotation (z) du tambour (14) et l'axe de rotation (z1) de la ou des broches porteuses de pièce à usiner (16), et un moyen formant moteur permettant d'entraîner par rotation le dispositif de serrage (28) autour de son axe (z2).
PCT/IB2013/061212 2012-12-27 2013-12-20 Tour vertical doté d'une broche de saisie mobile le long d'une trajectoire circulaire WO2014102689A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201390000147.XU CN203956637U (zh) 2012-12-27 2013-12-20 具有能沿环形路径移动的拾取主轴的立式车床

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001148A ITTO20121148A1 (it) 2012-12-27 2012-12-27 Tornio verticale con mandrino pick-up mobile lungo una traiettoria circolare
ITTO2012A001148 2012-12-27

Publications (1)

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WO2014102689A1 true WO2014102689A1 (fr) 2014-07-03

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PCT/IB2013/061212 WO2014102689A1 (fr) 2012-12-27 2013-12-20 Tour vertical doté d'une broche de saisie mobile le long d'une trajectoire circulaire

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CN (1) CN203956637U (fr)
IT (1) ITTO20121148A1 (fr)
TW (1) TW201440930A (fr)
WO (1) WO2014102689A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104815993B (zh) * 2015-05-19 2017-04-26 济南第一机床有限公司 双倒立车削中心立加
WO2019158965A1 (fr) * 2018-02-13 2019-08-22 Mikron Sa Agno Machine de transfert améliorée
ES2894891T3 (es) * 2018-09-12 2022-02-16 Fidia Spa Unidad de eje C para máquina-herramienta con electrohusillo

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0726119A1 (fr) * 1995-02-10 1996-08-14 Index-Werke Gmbh & Co. Kg Hahn & Tessky Machine-outil à broches multiples
EP0785040A1 (fr) * 1996-01-17 1997-07-23 WITZIG & FRANK TURMATIC GmbH Machine outil avec poste de travail multiple
EP0807490A2 (fr) * 1996-05-15 1997-11-19 Index-Werke Gmbh & Co. Kg Hahn & Tessky Tour multibroche
WO2011048483A1 (fr) 2009-10-23 2011-04-28 Siecab S.R.L. Tour de saisie vertical perfectionné

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0726119A1 (fr) * 1995-02-10 1996-08-14 Index-Werke Gmbh & Co. Kg Hahn & Tessky Machine-outil à broches multiples
EP0785040A1 (fr) * 1996-01-17 1997-07-23 WITZIG & FRANK TURMATIC GmbH Machine outil avec poste de travail multiple
EP0807490A2 (fr) * 1996-05-15 1997-11-19 Index-Werke Gmbh & Co. Kg Hahn & Tessky Tour multibroche
WO2011048483A1 (fr) 2009-10-23 2011-04-28 Siecab S.R.L. Tour de saisie vertical perfectionné

Also Published As

Publication number Publication date
CN203956637U (zh) 2014-11-26
ITTO20121148A1 (it) 2014-06-28
TW201440930A (zh) 2014-11-01

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