ES1259504U - Gantry Milling Machine - Google Patents
Gantry Milling Machine Download PDFInfo
- Publication number
- ES1259504U ES1259504U ES202090024U ES202090024U ES1259504U ES 1259504 U ES1259504 U ES 1259504U ES 202090024 U ES202090024 U ES 202090024U ES 202090024 U ES202090024 U ES 202090024U ES 1259504 U ES1259504 U ES 1259504U
- Authority
- ES
- Spain
- Prior art keywords
- milling machine
- screw
- machine according
- gantry milling
- upright
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003801 milling Methods 0.000 title claims abstract description 37
- 230000003134 recirculating effect Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
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- 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
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/012—Portals
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
- B23Q11/0017—Arrangements compensating weight or flexion on parts of the machine compensating the weight of vertically moving elements, e.g. by balancing liftable machine parts
-
- 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
- B23Q5/36—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission in which a servomotor forms an essential element
-
- 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
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
- Shovels (AREA)
Abstract
Description
DESCRIPCIÓNDESCRIPTION
Máquina de fresado de pórticoGantry Milling Machine
La presente invención se refiere al campo de las grandes herramientas de máquina. En particular, la presente invención se refiere a una máquina de fresado de pórtico.The present invention relates to the field of large machine tools. In particular, the present invention relates to a gantry milling machine.
Estas máquinas se utilizan a menudo para la producción de piezas grandes, tales como componentes de plantas nucleares o para la industria del petróleo y del gas o para la industria ferroviaria, que requieren tolerancias de fabricación muy estrictas, por razones de diseño y fiabilidad.These machines are often used for the production of large parts, such as components for nuclear plants or for the oil and gas industry or for the rail industry, which require very strict manufacturing tolerances, for design and reliability reasons.
Durante el procesado, por otro lado, se desarrollan enormes fuerzas que, de diferentes maneras, producen una deformación de los componentes de la máquina, afectando negativamente a las tolerancias asegurables.During processing, on the other hand, enormous forces are developed that, in different ways, cause a deformation of the machine components, negatively affecting the insurable tolerances.
Dependiendo del tipo de máquina, existen diferentes soluciones que tienen como objetivo limitar el efecto en la máquina de las fuerzas de procesamiento.Depending on the type of machine, there are different solutions that aim to limit the effect on the machine of the processing forces.
En particular, en lo que respecta a las máquinas de fresado de pórtico, existen soluciones que utilizan cables y poleas para compensar la deformación sufrida por los montantes o soluciones que utilizan algunos pistones hidráulicos para el mismo fin.In particular, with regard to gantry milling machines, there are solutions that use cables and pulleys to compensate for the deformation suffered by the uprights or solutions that use some hydraulic pistons for the same purpose.
Sin embargo, cada una de estas soluciones tiene inconvenientes. Por ejemplo, los sistemas mecánicos son voluminosos y están sujetos a un desgaste rápido, mientras que los sistemas hidráulicos requieren un circuito de suministro de energía ad hoc. However, each of these solutions has drawbacks. For example, mechanical systems are bulky and subject to rapid wear, while hydraulic systems require an ad hoc power supply circuit .
El objeto de la presente invención es proporcionar una gran máquina de fresado de pórtico capaz de satisfacer las necesidades del sector y de, al mismo tiempo, superar los inconvenientes mencionados con referencia a la técnica anterior.The object of the present invention is to provide a large gantry milling machine capable of satisfying the needs of the sector and at the same time overcoming the drawbacks mentioned with reference to the prior art.
Tal objetivo se consigue mediante una máquina de fresado de pórtico de acuerdo con la reivindicación 1. Las reivindicaciones dependientes describen variantes adicionales ventajosas de realización.This object is achieved by means of a gantry milling machine according to claim 1. The dependent claims describe further advantageous variants of embodiment.
Las características y ventajas de la máquina de fresado de pórtico de acuerdo con la presente invención aparecerán más claramente a partir de la siguiente descripción, hecha a modo de ejemplo indicativo y no limitante con referencia a las figuras que se acompañan, en las que:The characteristics and advantages of the gantry milling machine according to the present The invention will appear more clearly from the following description, made by way of an indicative and non-limiting example with reference to the accompanying figures, in which:
- la figura 1 muestra un aparato que comprende una máquina de fresado de pórtico de acuerdo con una realización de la presente invención;figure 1 shows an apparatus comprising a gantry milling machine according to an embodiment of the present invention;
- la figura 2 muestra la máquina de fresado de pórtico de la figura 1;figure 2 shows the gantry milling machine of figure 1;
- la figura 3 muestra un montante de la máquina de fresado de pórtico de la figura 2; yfigure 3 shows an upright of the gantry milling machine of figure 2; Y
- la figura 4 muestra un corte vertical del montante de la figura 3, con travesaño y medios de movimiento vertical.figure 4 shows a vertical section of the upright of figure 3, with crossbar and vertical movement means.
Con referencia a los dibujos adjuntos, el número 1 de referencia indica en general un aparato de herramienta de máquina que comprende cimientos 2, habitualmente formados por debajo del plano de tierra, en los que están bancos 4 de máquina de fresado de pórtico, dispuestos en paralelo a lo largo de una dirección longitudinal X.With reference to the accompanying drawings, reference numeral 1 generally indicates a machine tool apparatus comprising foundations 2, usually formed below the ground plane, in which are gantry milling machine benches 4, arranged in parallel along a longitudinal direction X.
Por ejemplo, cada banco 4 consta de un par de guías de banco 4’.For example, each bank 4 consists of a pair of bank 4 'guides.
El aparato de herramienta de máquina 1 comprende adicionalmente una máquina de fresado de pórtico 10, que comprende un par de carros de montante 12, estando cada carro de montante 12 aplicado de manera deslizante al respectivo banco 4.The machine tool apparatus 1 further comprises a gantry milling machine 10, which comprises a pair of upright carriages 12, each upright carriage 12 being slidingly engaged to respective bench 4.
La máquina de fresado 10 comprende adicionalmente un par de montantes 14, 16 separados a lo largo de una dirección transversal Y ortogonal a la dirección longitudinal X, en donde cada montante 14, 16 tiene una extensión predominante a lo largo de una dirección vertical respectiva W1, W2.Milling machine 10 further comprises a pair of uprights 14, 16 spaced along a transverse direction Y orthogonal to longitudinal direction X, wherein each upright 14, 16 has a predominant extension along a respective vertical direction W1 , W2.
Cada montante 14, 16 está soportado por el respectivo carro de montante 12 y tiene, preferiblemente, una estructura en forma de caja provista de placas de refuerzo, con el fin de garantizar una alta rigidez.Each upright 14, 16 is supported by the respective upright carriage 12 and preferably has a box-shaped structure provided with reinforcing plates, in order to ensure high rigidity.
Cada montante 14, 16, preferiblemente de corte cuadrangular, tiene una cara frontal 17, sobre la que se aplican guías paralelas de montante 18, que se extienden a lo largo de la dirección vertical W1, W2. Each post 14, 16, preferably quadrangular cut, has a front face 17, on which are applied parallel post guides 18, extending along the vertical direction W1, W2.
Preferiblemente, dichas guías de montante 18 ocupan sólo parcialmente la cara frontal 17, mientras que una porción restante aloja los medios de movimiento vertical 30, que se describirán a continuación.Preferably, said post guides 18 only partially occupy the front face 17, while a remaining portion houses the vertical movement means 30, which will be described below.
La máquina de fresado 10 comprende adicionalmente un travesaño 20, que se extiende a lo largo de la dirección transversal Y, y que está aplicado de manera deslizante a dichas guías de montante 18 en cada montante 14, 16.The milling machine 10 further comprises a crossbar 20, which extends along the transverse direction Y, and which is slidingly engaged to said stud guides 18 at each stud 14, 16.
La máquina de fresado comprende adicionalmente un cabezal portaherramientas soportado de manera deslizante por el travesaño y una herramienta de fresado soportada por el cabezal portaherramientas.The milling machine further comprises a tool head slidably supported by the crossbar and a milling tool supported by the tool head.
Los medios de movimiento vertical 30 de la máquina de fresado 10 están aplicados al travesaño 20 para impulsar su traslación a lo largo de la dirección vertical W1, W2.The vertical movement means 30 of the milling machine 10 are applied to the crossbar 20 to drive its translation along the vertical direction W1, W2.
Para cada montante 14, 16, los medios de movimiento vertical 30 comprenden un tornillo sin fin 32 aplicado a e integrado con el travesaño 20. Por ejemplo, el travesaño 20, en la cara trasera 20b, opuesta a la cara delantera 20a destinada a la aplicación del cabezal portaherramientas, tiene un accesorio 22, al que está conectado mecánicamente el tornillo sin fin 32.For each upright 14, 16, the vertical movement means 30 comprise an endless screw 32 applied to and integrated with the cross member 20. For example, the cross member 20, on the rear face 20b, opposite to the front face 20a intended for the application of the tool head, has an accessory 22, to which the endless screw 32 is mechanically connected.
Dichos medios de movimiento vertical 30 también comprenden un tornillo de bolas en recirculación 34, aplicado de manera giratoria al tornillo sin fin 32, que se extiende de manera predominante a lo largo de un eje vertical Q de tornillo, paralelo a la dirección vertical W1, W2, entre un extremo superior 36 y un extremo inferior 38.Said vertical movement means 30 also comprise a recirculating ball screw 34, rotatably applied to the endless screw 32, which extends predominantly along a vertical screw axis Q, parallel to the vertical direction W1, W2, between an upper end 36 and a lower end 38.
Los medios de movimiento vertical 30 comprenden adicionalmente un motor eléctrico superior 40, aplicado al tornillo 34, directa o indirectamente, en el extremo superior 36, y un motor eléctrico inferior 42, aplicado al tornillo 34, directa o indirectamente, en el extremo inferior 38.The vertical movement means 30 further comprise an upper electric motor 40, applied to the screw 34, directly or indirectly, at the upper end 36, and a lower electric motor 42, applied to the screw 34, directly or indirectly, at the lower end 38 .
De acuerdo con una realización, cada motor eléctrico 40, 42 está soportado por el respectivo montante 14, 16.According to one embodiment, each electric motor 40, 42 is supported by the respective upright 14, 16.
De acuerdo con una realización preferida, además, dichos medios de movimiento vertical 30 comprenden un soporte giratorio superior 44, que soporta de manera giratoria el extremo superior 36 del tornillo 34, y un soporte giratorio inferior 46, que soporta de manera giratoria el extremo inferior 38 del tornillo 34.According to a preferred embodiment, furthermore, said vertical movement means 30 comprise an upper rotating support 44, which rotatably supports the end upper 36 of screw 34, and a lower rotary bracket 46, which rotatably supports lower end 38 of screw 34.
Preferiblemente, dichos soportes giratorios 44, 46 son adecuados para alojar una pluralidad de cojinetes de bolas en recirculación, para un soporte óptimo del tornillo 34.Preferably, said rotatable supports 44, 46 are suitable to house a plurality of recirculating ball bearings, for optimal support of the screw 34.
Lo que es más, preferiblemente, cada soporte giratorio 44, 46 se aplica a la cara frontal 17 del respectivo montante 14, 16.What is more, preferably, each rotary bracket 44, 46 engages the front face 17 of the respective upright 14, 16.
Lo que es más, preferiblemente, el motor superior 40 es coaxial con el motor inferior 42 y está alineado con el eje Q del tornillo 34.What is more, preferably, the upper motor 40 is coaxial with the lower motor 42 and is aligned with the axis Q of the screw 34.
La máquina de fresado 10 comprende adicionalmente unos medios de control de tornillo electrónico 100 para controlar el funcionamiento de los motores 40, 42 de cada montante 14, 16 para obtener una rotación controlada del tornillo 34.The milling machine 10 further comprises electronic screw control means 100 for controlling the operation of the motors 40, 42 of each upright 14, 16 to obtain a controlled rotation of the screw 34.
En particular, dichos medios de control de tornillo, que comprenden un PLC o un microprocesador programado con el equipo lógico informático (software) adecuado, están configurados o programados como para realizar un control de momento torsor de acuerdo con una lógica maestro/esclavo, en el que, por ejemplo, para cada montante 14, 16, el motor superior 40 actúa como maestro de control de momento torsor, y el motor inferior 42 actúa como esclavo de control de momento torsor.In particular, said screw control means, which comprise a PLC or a microprocessor programmed with the appropriate computer logic (software), are configured or programmed to perform a torque control according to a master / slave logic, in which, for example, for each strut 14, 16, the upper motor 40 acts as a torque control master, and the lower motor 42 acts as a torque control slave.
Lo que es más, preferiblemente, los medios de control de tornillo no adoptan ninguna precarga, ya que se supone que la restricción mecánica entre los motores, implantada por el tornillo, es suficientemente rígida y sin holgura.What is more, preferably, the screw control means does not adopt any preload, since the mechanical restriction between the motors, implanted by the screw, is assumed to be sufficiently rigid and without play.
Además, preferiblemente, los medios de control de tornillo distribuyen el momento torsor por igual entre los dos motores.Furthermore, preferably, the screw control means distributes the torque equally between the two motors.
Además, La máquina de fresado 10 comprende unos medios electrónicos de control 110 para conseguir que el travesaño 20 no se distorsione, ni de manera dinámica ni de manera estática.Furthermore, the milling machine 10 comprises electronic control means 110 to ensure that the crossbar 20 is not distorted, neither dynamically nor statically.
Dichos medios de control transversal 110, que comprenden por ejemplo un PLC o un microprocesador programado con el software adecuado, están configurados o programados para hacer funcionar un control de posición entre un motor 40, 42 del primer montante 14 y un motor 40, 42 del segundo montante 16, de acuerdo con una lógica maestro/esclavo.Said transverse control means 110, comprising for example a PLC or a microprocessor programmed with the appropriate software, are configured or programmed to operate a position control between a motor 40, 42 of the first upright 14 and a motor 40, 42 of the second post 16, according to a master / slave logic.
Por ejemplo, dentro de los medios de control de posición 110, el motor superior 40 del primer montante 14 funciona como maestro en el control de posición, y el motor superior 40 del segundo montante 16 funciona como esclavo en el control de posición.For example, within the position control means 110, the upper motor 40 of the first post 14 functions as a master in position control, and the upper motor 40 of the second post 16 functions as a slave in position control.
Para este fin, La máquina de fresado 10 comprende medios para detectar la posición del travesaño; por ejemplo, dichos medios de detección comprenden dos líneas ópticas montadas especularmente en un montante y en el otro, adecuadas para enviar, a los medios de control transversal 110, una señal representativa de la posición del travesaño 20 en el respectivo montante 14, 16.To this end, the milling machine 10 comprises means for detecting the position of the crossbar; for example, said detection means comprise two optical lines mounted specularly on one upright and on the other, suitable to send, to the transverse control means 110, a signal representative of the position of the crossbar 20 on the respective upright 14, 16.
Por supuesto, el desplazamiento del cabezal portaherramientas a lo largo del travesaño 20 implica un desequilibrio de las cargas en los dos pares de motores 40, 42.Of course, the displacement of the tool head along the cross member 20 implies an imbalance of the loads in the two pairs of motors 40, 42.
Los medios de control transversal 110, por medio de dicho control de posición, permite la acción global necesaria para mantener el travesaño recto durante su elevación o descenso entre los dos montantes, mientras que, dentro de cada montante, los medios 100 de control de tornillo distribuyen el momento torsor entre los dos motores por igual.The transverse control means 110, by means of said position control, allows the overall action necessary to keep the crossbar straight during its raising or lowering between the two posts, while, within each post, the screw control means 100 they distribute the torque between the two motors equally.
De manera innovadora, la máquina de fresado de pórtico de acuerdo con la presente invención supera los inconvenientes mencionados con referencia al estado de la técnica, ya que permite aumentar considerablemente la rigidez aparente del tornillo, mejorando, de este modo, la precisión de los desplazamientos de los travesaños.In an innovative way, the gantry milling machine according to the present invention overcomes the drawbacks mentioned with reference to the state of the art, since it makes it possible to considerably increase the apparent rigidity of the screw, thus improving the precision of the movements of the cross members.
Lo que es más, ventajosamente, la presencia de dos motores por cada tornillo mejora la fiabilidad de la máquina, ya que implanta una redundancia en el soporte del tornillo, útil en el caso de mal funcionamiento o rotura de uno de los dos motores del tornillo.What is more, advantageously, the presence of two motors for each screw improves the reliability of the machine, since it implements redundancy in the screw support, useful in the event of a malfunction or breakage of one of the two screw motors. .
Es claro que el experto en la técnica puede hacer cambios en la máquina de fresado descrita anteriormente con el fin de satisfacer necesidades incidentales, cayendo, todos ellos, dentro del alcance de protección definido en las siguientes reivindicaciones. It is clear that the person skilled in the art can make changes to the milling machine described above in order to satisfy incidental needs, all of which fall within the scope of protection defined in the following claims.
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102018000005332A IT201800005332A1 (en) | 2018-05-14 | 2018-05-14 | PORTAL MILLING MACHINE |
PCT/IB2019/053866 WO2019220286A1 (en) | 2018-05-14 | 2019-05-10 | Gantry milling machine |
Publications (2)
Publication Number | Publication Date |
---|---|
ES1259504U true ES1259504U (en) | 2021-01-25 |
ES1259504Y ES1259504Y (en) | 2021-04-15 |
Family
ID=63312235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES202090024U Active ES1259504Y (en) | 2018-05-14 | 2019-05-10 | Gantry Milling Machine |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN214685212U (en) |
DE (1) | DE212019000284U1 (en) |
ES (1) | ES1259504Y (en) |
IT (1) | IT201800005332A1 (en) |
WO (1) | WO2019220286A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3834984B1 (en) * | 2019-12-10 | 2024-02-07 | GF Machining Solutions AG | Machine structure for machine tool |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02160440A (en) * | 1988-12-12 | 1990-06-20 | Honda Motor Co Ltd | Machine tool |
JP3369802B2 (en) * | 1995-07-24 | 2003-01-20 | オークマ株式会社 | Moving body drive device |
JPH1086027A (en) * | 1996-09-13 | 1998-04-07 | Toshiba Mach Co Ltd | Driving method and device for feed screw |
JPH11114762A (en) * | 1997-10-14 | 1999-04-27 | Kitamura Mach Co Ltd | Driving device for nc machine tool |
-
2018
- 2018-05-14 IT IT102018000005332A patent/IT201800005332A1/en unknown
-
2019
- 2019-05-10 WO PCT/IB2019/053866 patent/WO2019220286A1/en active Application Filing
- 2019-05-10 ES ES202090024U patent/ES1259504Y/en active Active
- 2019-05-10 DE DE212019000284.6U patent/DE212019000284U1/en active Active
- 2019-05-10 CN CN201990000694.5U patent/CN214685212U/en active Active
Also Published As
Publication number | Publication date |
---|---|
IT201800005332A1 (en) | 2019-11-14 |
CN214685212U (en) | 2021-11-12 |
DE212019000284U1 (en) | 2020-12-21 |
WO2019220286A1 (en) | 2019-11-21 |
ES1259504Y (en) | 2021-04-15 |
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