WO2013057327A1 - Machine-outil à bélier orientable - Google Patents

Machine-outil à bélier orientable Download PDF

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Publication number
WO2013057327A1
WO2013057327A1 PCT/ES2011/000306 ES2011000306W WO2013057327A1 WO 2013057327 A1 WO2013057327 A1 WO 2013057327A1 ES 2011000306 W ES2011000306 W ES 2011000306W WO 2013057327 A1 WO2013057327 A1 WO 2013057327A1
Authority
WO
WIPO (PCT)
Prior art keywords
ram
intermediate piece
carriage
machine tool
piece
Prior art date
Application number
PCT/ES2011/000306
Other languages
English (en)
Spanish (es)
Inventor
ANDONEGUI.Aitor AGIRRE
Iosu UNZUETA SAN MARTIN
Original Assignee
Goratu Maquinas-Herramienta, S.A.
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 Goratu Maquinas-Herramienta, S.A. filed Critical Goratu Maquinas-Herramienta, S.A.
Priority to PCT/ES2011/000306 priority Critical patent/WO2013057327A1/fr
Publication of WO2013057327A1 publication Critical patent/WO2013057327A1/fr

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
    • 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
    • B23Q1/4852—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs a single sliding pair followed perpendicularly by a single rotating pair
    • B23Q1/4866—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs a single sliding pair followed perpendicularly by a single rotating 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
    • B23Q2220/00—Machine tool components
    • B23Q2220/006—Spindle heads

Definitions

  • the present invention is related to the mechanization of large parts by means of the use of machine tools such as milling machines or boring machines, proposing a mobile column machine tool that has an angularly orientable ram to bore holes and mill in inclined planes without the need for Move the piece.
  • milling machines and boring machines which are composed of horizontal tables fixed to the ground or dividing plates on which the workpiece is arranged, and a vertical column on the that a carriage slides inside which a ram is arranged that in turn slides horizontally in a direction perpendicular to the column and therefore to the longitudinal axis of the table that supports the piece.
  • a rod is coaxially arranged, which at its tip can have a boring tool.
  • the exit of the cane has, like the ram, a movement in the direction perpendicular to the longitudinal axis of the table, this causes that if you need to mechanize holes in inclined planes of the piece, it is the piece itself that must move to that the plane to be machined is in a position perpendicular to the cane.
  • tables are used which, by using a series of actuators, can rotate and tilt to position the plane of the workpiece facing the tool.
  • this solution involves the use of tables with anchoring and drive systems that must withstand large loads derived from the weight of the piece, which increases the cost of the machine as a whole and increases the machining time because the piece must be properly anchored to the table.
  • the present invention proposes to employ a ram that can rotate to position itself in different angles and be able to attack on different inclined planes of the piece.
  • a ram that can rotate to position itself in different angles and be able to attack on different inclined planes of the piece.
  • systems based on systems of rotation or pulleys that allow a slight movement of the ram in its direction of advance however these systems are not designed to make sharp turns in the ram, but to compensate for the fall of the same during the progressive removal of the latter from the column of the machine tool.
  • a system for compensating the fall of the ram as described above is described in European patent EP 2,149,423, where a support piece is provided that is associated with skates that include guides through which the ram moves transversely with respect to of the vertical translation carriage and the machine column.
  • the support piece rotates due to the drive of two Ball screws that act in opposite directions to cause the ram to lift when it deflects due to its weight.
  • This system allows to correct small deviations derived from the weight of the ram but is limited in its angular movement and is not valid to make pronounced turns of the ram, or to keep the same held to work in a certain angular position.
  • European Patent EP 487,896 discloses a machining center that has a column with respect to which a ram that can rotate with respect to a horizontal axis moves vertically and horizontally to operate in two horizontal positions on both sides of the machining center. The rotation is achieved by means of a radial pinion that gears punctually with a toothed crown that is associated with the ram, a braking system composed of four cylindrical heads that act by pressure block the ram in its working position.
  • This system allows the ram to be placed in two opposing horizontal positions by rotating the ram through the center of its mass axis to facilitate positioning, however it is not valid to tilt the ram when it is working in a position away from the column of the machine since in the braking system there can be landslides that do not guarantee the stability of the ram or the positioning accuracy required when working in an inclined position away from the machine column.
  • a machine tool with a ram that is angularly orientable is proposed to be able to attack inclined planes of different parts to be machined without the need to turn the piece and use tables with complex anchoring and turning systems that must withstand large loads .
  • the object of the present invention is to propose a machine tool comprising a column through which a carriage and a ram that is mounted on the carriage and which in turn travels horizontally with respect to the machine column.
  • a machine tool comprising a column through which a carriage and a ram that is mounted on the carriage and which in turn travels horizontally with respect to the machine column.
  • an intermediate piece that includes skates that slide on horizontal guides arranged on the ram.
  • a turning mechanism is arranged on a horizontal axis, which is formed by a radial crown integral to the intermediate piece on which at least two radial pinions that are attached to the carriage engage.
  • the machine tool has locking systems of the intermediate piece that act individually or in combination with each other to retain the ram in the required working position.
  • the locking systems of the intermediate piece to guarantee the retention of the ram in the required position are at least three, being able to act separately or jointly depending on the needs required by the machining operation, so that the stability of the ram can be guaranteed even when it is in a position away from the machine column.
  • the first locking system of the intermediate piece is constituted by servomotors that act on a respective radial gear pinion with the radial crown, in this way by means of a continuous operation of said servomotors the toothed crown can be retained and therefore block the piece intermediate to which the ram is associated.
  • the second locking system of the intermediate piece is constituted by disc brakes arranged on both sides of the intermediate piece, the disc brakes being respectively formed by an arm that is attached to the intermediate piece and calipers that are attached to the carriage and that selectively seize the upper arm.
  • the third locking system of the intermediate piece is constituted by an annular piece that on one side is coupled to the intermediate piece and on the other side has a toothed surface that faces a toothed ring, said toothed ring is connected with cylinders Hydraulics that cause the gearing of the toothed ring with the annular piece, so that a correct blockage of the intermediate piece is guaranteed, which in turn guarantees the retention of the ram in the required inclined work position.
  • a machine tool is thus obtained which, due to its constructive and functional characteristics, is a preferred application for the function to which it is intended in relation to the orientation of the ram for machining on different inclined planes of a piece, without the need to rotate the piece or use special support tables.
  • Figure 1 shows a perspective view of the machine tool of the invention, where the possibility of guiding the ram angularly is shown.
  • Figure 2 is a front perspective view of the ram of the machine tool and a vertical translation carriage.
  • Figure 3 is a perspective view of the ram and the car of the machine tool viewed from behind.
  • Figure 4 shows a perspective view from behind, like the one in the previous figure, where the vertical translation carriage has been removed to show the ram's turning mechanism.
  • Figure 5 shows an elevation view of the ram and the car, where a horizontal section and a vertical section taken by the center of the car are indicated.
  • Figures 6 and 7 correspond respectively to the vertical section VI-VI and the horizontal section VII-VII of Figure 5.
  • Figures 8 and 9 show, respectively, enlarged details of Figures 6 and 7.
  • Figure 1 shows a perspective view of the machine tool object of the present invention, where a column (1) can be observed through which a ram (2) moves vertically, which is represented in two positions, one a normal stroke and another stroke and point, to show the versatility of being able to be placed in different angular positions.
  • the ram (2) has a rod (3) inside it that in its most extreme part has a boring tool, so that by means of the orientation of the ram (2) different inclined planes of the workpiece can be attacked (not shown).
  • the ram (2) is mounted on a carriage (4) that moves vertically by means of skates (5) that slide on respective fixed vertical guides to the column (1) of the machine, these vertical guides have not been represented for reasons of clarity in the figures.
  • the ram (2) moves horizontally with respect to the carriage (4) through other skates (6) that slide on horizontal guides (7) arranged on the ram itself (2).
  • the carriage (4) has been omitted to be able to show the mechanism that causes the controlled rotation of the intermediate piece (8) and therefore of the ram (2) on a horizontal axis indicated with the reference (A).
  • the intermediate piece (8) rotates in solidarity with a radial crown (9) that meshes with at least two radial pinions (10) arranged in diametrically opposite positions.
  • Pine nuts Radials (10) are operated by respective servo reducers (11) that are synchronized and electronically preloaded to avoid gaps between teeth that can cause loss of precision. That is, the radial pinions (10) act on the opposite flanks of the teeth of the radial crown (10), to avoid gaps.
  • the first locking system is constituted by the two servo reducers (11) that drive the respective radial pinions (10), so that by means of a continuous operation of said servo reducers (11) the ram (2) is kept in the angular position required for machining.
  • This system allows positioning the ram (2) in any angular position and eliminates the effect caused by the fall of the ram, so it is designed for tasks that require great precision, such as parts finishing operations.
  • the second locking system consists of disc brakes (12) arranged above and below the ram (2), which have arms (12.1) that are coupled to the intermediate piece (8) and calipers (12.2 ) that are attached to the vertical translation carriage (4), so that the upper part of the arms (12.1) runs inside of the clamps (12.2), where a friction material is present, so that when the ram lock is required (2) the clamps (12.2) are closed by several hydraulic cylinders, leaving the upper part of the arms (12.1) immobilized.
  • This locking system angular positioning of the ram (2) of thousandths of a degree is achieved, allowing starting capacities of up to 40 Kw and 1,400 Nm.
  • the third locking system consists of a series of toothed crowns of the Hirth type that are arranged in the turning mechanism that is internalized in the carriage (4).
  • This third locking system is constituted by an annular piece (13), which on one side is integral with the intermediate piece (8) and on the other side has a serrated surface (13.1), which is arranged facing a ring (14) that is serrated in its frontal part.
  • the toothed ring (14) engages with a toothed surface (18.1) of the annular part (18) that rotates together with the whole mechanism and the part (13), and with a toothed annular piece (17) on a toothed surface (17.1) that is static with the non-rotating side of the carriage (4).
  • the hydraulic cylinder (15) that causes the coupling has in its front part a spring (16) that causes the cylinder to retract when it is not acted and on the other hand dampens the advance of the cylinder, to avoid collisions during the coupling that could damage the gear.
  • the adjustable ram (2) of the invention is configured to mount a boring tool on the tip of the rod (3) and make holes on different inclined planes of the piece, but it is clear that the rod (3) can be retracted into the ram (2) to arrange other tools, such as milling, grinding, turning or other heads.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)

Abstract

L'invention concerne une machine-outil à bélier orientable, formée d'une colonne dans laquelle se déplace verticalement un chariot dans lequel est intégré un bélier (2) qui se déplace horizontalement, une pièce intermédiaire (8) qui se déplace sur des guides horizontaux (7) du bélier (2) venant entre le chariot et le bélier (2); à ladite pièce intermédiaire (8) est accouplé un mécanisme de rotation qui comprend une couronne radiale (9) solidaire de la pièce intermédiaire (8) et sur laquelle viennent s'engrener au moins deux pignons radiaux (10) qui sont reliés au chariot qui comporte le bélier (2); la pièce intermédiaire (8) présentant des systèmes de blocage qui agissent individuellement ou de manière combinée pour retenir le bélier (2) dans la position requise.
PCT/ES2011/000306 2011-10-21 2011-10-21 Machine-outil à bélier orientable WO2013057327A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES2011/000306 WO2013057327A1 (fr) 2011-10-21 2011-10-21 Machine-outil à bélier orientable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2011/000306 WO2013057327A1 (fr) 2011-10-21 2011-10-21 Machine-outil à bélier orientable

Publications (1)

Publication Number Publication Date
WO2013057327A1 true WO2013057327A1 (fr) 2013-04-25

Family

ID=48140386

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2011/000306 WO2013057327A1 (fr) 2011-10-21 2011-10-21 Machine-outil à bélier orientable

Country Status (1)

Country Link
WO (1) WO2013057327A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015014961A3 (fr) * 2013-08-01 2015-04-23 Grob-Werke Gmbh & Co. Kg Configuration d'une machine d'usinage
CN105500035A (zh) * 2015-12-26 2016-04-20 沈正福 一种数控加工中心第一轴滑动座

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483796A (en) * 1967-06-21 1969-12-16 Innocenti Soc Generale Angularly adjustable headstock attachment for use on machine tools
US3757638A (en) * 1972-04-12 1973-09-11 J Martin Five-axis shaper
US4369958A (en) * 1980-11-17 1983-01-25 Airco, Inc. Rotating table positioning device with minimum backlash
US5090267A (en) * 1990-11-21 1992-02-25 Gramling James T Indexing apparatus
US5664308A (en) * 1994-11-25 1997-09-09 Deitert; Heinz Machine tool having a tool mounted eccentrically on a rotatable turntable
US20100202847A1 (en) * 2007-07-25 2010-08-12 Rudolf Moser Tool for machining a work piece and method for machining a work piece

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483796A (en) * 1967-06-21 1969-12-16 Innocenti Soc Generale Angularly adjustable headstock attachment for use on machine tools
US3757638A (en) * 1972-04-12 1973-09-11 J Martin Five-axis shaper
US4369958A (en) * 1980-11-17 1983-01-25 Airco, Inc. Rotating table positioning device with minimum backlash
US5090267A (en) * 1990-11-21 1992-02-25 Gramling James T Indexing apparatus
US5664308A (en) * 1994-11-25 1997-09-09 Deitert; Heinz Machine tool having a tool mounted eccentrically on a rotatable turntable
US20100202847A1 (en) * 2007-07-25 2010-08-12 Rudolf Moser Tool for machining a work piece and method for machining a work piece

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015014961A3 (fr) * 2013-08-01 2015-04-23 Grob-Werke Gmbh & Co. Kg Configuration d'une machine d'usinage
US20160176002A1 (en) * 2013-08-01 2016-06-23 Grob-Werke Gmbh & Co. Kg Machine tool
US20160193704A1 (en) * 2013-08-01 2016-07-07 Grob-Werke Gmbh & Co. Kg Machine tool for machining
US9878409B2 (en) * 2013-08-01 2018-01-30 Grob-Werke Gmbh & Co. Kg Machine tool for machining
CN105500035A (zh) * 2015-12-26 2016-04-20 沈正福 一种数控加工中心第一轴滑动座
CN105500035B (zh) * 2015-12-26 2018-02-27 南通知航机电科技有限公司 一种数控加工中心第一轴滑动座

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