Machine tool

Abstract

The present invention relates to a machine tool capable of performing six-surface machining of a workpiece precisely and rapidly using two main spindles through one setup and one process, and capable of achieving compactness, by an optimized layout capable of multi-axis two-system machining.

Description

Technical Field

[0001] This invention relates to machine tools, and in particular to machine tools that can perform multi-axis dual-system optimized layouts, enabling not only the machining of general materials, but also the precise and rapid machining of six sides of large materials in a single setup and single operation using two spindles, and achieving a compact machine tool. Background Technology

[0002] Generally speaking, a machine tool is a machine used to process metal / non-metal workpieces into the required shape and size by means of appropriate cutting or non-cutting tools.

[0003] Machine tools of various types, such as turning centers, vertical / horizontal machining centers, gantry machining centers, Swiss-type machine tools, electrical discharge machines, horizontal NC boring machines, CNC lathes, and composite machining centers, are widely used in various industrial settings according to their respective applications.

[0004] In machine tools, a so-called multi-functional machining center refers to a turning center equipped with a multi-functional automatic tool changer (ATC) and tool magazine capable of performing various machining operations such as turning, drilling, tapping, and milling. In a multi-functional machining center, when the operator needs to load or change the tools required for machining, the tools usually need to be manually loaded into the tool magazine.

[0005] Generally, many machine tools currently in use have a control console that utilizes numerical control (NC) or CNC (computerized numerical control) technology. This control console has various function switches or buttons and a monitor.

[0006] In addition, the machine tool is equipped with: a worktable for placing workpieces or materials and transferring workpieces for processing; a tray for preparing workpieces before processing; a spindle for rotating in conjunction with a tool or workpiece; a tailstock for supporting the workpiece during processing; and shockproof devices, etc.

[0007] Generally, machine tools include a transfer unit that moves the worktable, tool post, spindle, tailstock, and vibration damping device along the transfer axis for various machining operations.

[0008] In addition, in order to perform various machining operations, machine tools generally use multiple cutting tools, and use a tool magazine or turret in the form of a tool storage area to house and store multiple cutting tools.

[0009] In order to perform various machining operations, the machine tool uses multiple cutting tools and a tool magazine in the form of a tool storage area that houses and stores the multiple cutting tools.

[0010] In addition, to minimize non-processing time, machine tools are generally equipped with an Automatic Palette Changer (APC). The APC automatically exchanges pallets between the workpiece processing area and the workpiece setting area. Workpieces can be loaded onto the pallets.

[0011] Generally, in order to improve the productivity of machine tools, machine tools are equipped with an automatic tool changer (ATC). The automatic tool changer retrieves or reloads a specific tool from the tool magazine according to the instructions of the CNC unit.

[0012] Generally speaking, a machining center is a machine tool equipped with an automatic tool changer and other devices that can change multiple tools and perform a wide range of machining operations on lathes, milling machines, drilling machines, boring machines, etc. It is mainly divided into vertical machining centers with vertically mounted spindles and horizontal machining centers.

[0013] Recent trends in automotive manufacturing technology necessitate the use of gigacasting processes to manufacture materials for vehicle underframes in order to ensure productivity and cost competitiveness.

[0014] The existing traditional method of manufacturing vehicle underframes involves multiple processes, such as casting and machining dozens of different vehicle frame components separately, followed by assembly through welding and bolting.

[0015] The Giga Casting process is due to the recent development of large-scale casting equipment, which enables the one-time casting of a complete assembly shape equivalent to dozens of parts in the past.

[0016] The introduction of this giga casting (GIGA CASTING) process necessitates not only the processing of general sizes, but also the development of equipment for single-stage casting of large sizes.

[0017] There is a current demand for the development of equipment capable of processing large gigacasting in a single setup and single operation.

[0018] Furthermore, this technology is not only applicable to giga casting (GIGA CASTING), but also to electric vehicle (EV) battery trays, which have recently seen a surge in demand.

[0019] In the past, electric vehicle battery trays were assembled from multiple individual components, but for similar reasons, there is an increasing demand for manufacturing them as a single unit and completing the overall shape processing in one go.

[0020] Traditional machine tools have various problems when using multiple spindles to simultaneously machine a part of a large material on six sides.

[0021] That is, a common type of C-frame table-moving vertical machining center in traditional machine tools has the problem that it cannot realize two spindles because it is a table-moving device.

[0022] Even if two spindles (2Spindle) are applied to a C-frame table-moving vertical machining center, there is still an insurmountable problem that the two spindles cannot be machined independently because a table can only move two axes.

[0023] In addition, a conventional five-axis vertical machining center with column movement in traditional machine tools does not have a two-axis spindle, but a rotating table as the two-axis rotation. Although it can machine up to five sides of small materials, it cannot machine six sides due to the C-axis drive of the rotating table. Furthermore, it cannot even machine five sides of large materials, which is a problem.

[0024] Furthermore, while traditional large gantry machine tools can process small materials and perform five-sided machining on large materials, six-sided machining is not feasible. Even for five-sided machining, a very large equipment layout is required, resulting in reduced space utilization, consumer dissatisfaction, and increased manufacturing and installation costs.

[0025] Therefore, there is an urgent need to develop a machine tool with a compact size that can process both small and large materials on all six sides in one setup and one operation.

[0026] Existing technical documents

[0027] Patent documents

[0028] Patent Document 1: Korean Invention Patent Publication No. 10-2016-0092326

[0029] Patent Document 2: Korean Invention Patent Publication No. 10-2018-0027380

[0030] Patent Document 3: Korean Invention Patent Publication No. 10-2020-0131921

[0031] Patent Document 4: Korean Invention Patent Publication No. 10-2020-0098094

[0032] Patent Document 5: Korean Invention Patent Publication No. 10-2021-0151858

[0033] Patent Document 6: Korean Invention Patent Publication No. 10-2023-0139542 Summary of the Invention

[0034] Technical issues

[0035] The present invention aims to solve the above-mentioned problems and its purpose is to provide a machine tool that, through an optimized layout capable of multi-axis two-system machining, enables machining of both ordinary and large materials by avoiding interference between the worktable and the material clamping by two spindles, and to perform six-sided machining accurately and quickly by using two spindles simultaneously or independently. In order to maximize the machining area, the proximity distance between the two spindles is minimized to improve productivity and accuracy. The overall design is compact and maximizes space utilization.

[0036] Technical solution

[0037] To achieve the objectives of this invention, the machine tool according to the invention comprises: a bed module divided into a machining area and a non-machining area; a workpiece module disposed in the machining area of ​​the bed module, wherein, when a workpiece to be machined is placed therein, the workpiece to be machined is moved and rotated about one axis according to the machining process; a first machining module disposed in the non-machining area of ​​the bed module capable of moving and rotating about multiple axes independently of the workpiece module, for machining the workpiece placed in the workpiece module; and a second machining module disposed in the non-machining area of ​​the bed module capable of moving and rotating about multiple axes independently of the workpiece module and the first machining module, for simultaneously machining the portion of the workpiece placed in the workpiece module that was machined by the first machining module, or machining them separately and independently.

[0038] Furthermore, in a preferred embodiment of the machine tool of the present invention, the machine tool may further include a tool changing module, which is capable of accommodating multiple tools and is respectively disposed on both sides of the non-machining area of ​​the machine tool module, so as to perform tool changing with the first machining module and the second machining module respectively.

[0039] Furthermore, in a preferred embodiment of the machine tool of the present invention, the machine tool may further include a cover module configured on the bed module in a manner that divides the bed module into a machining area and a non-machining area.

[0040] In an ideal embodiment of the machine tool of the present invention, the workpiece module can move in one direction along the front-back direction on the bed module and rotate in one direction with the left-right direction as a reference, so as to form two shaft systems.

[0041] Furthermore, in a preferred embodiment of the machine tool of the present invention, the first processing module and the second processing module of the machine tool can move in three directions—left-right, front-back, and up-down—and rotate in two directions based on the left-right and front-back directions, thereby forming five axis systems.

[0042] Furthermore, in a preferred embodiment of the machine tool of the present invention, the machine tool performs two system machining with seven axes by working independently of the workpiece module, the first machining module and the second machining module, respectively, to simultaneously or independently process a part of a large workpiece, and to perform machining of the six sides of the large workpiece (top, bottom, left, right and front) in one setup and one operation.

[0043] To achieve other objectives of the present invention, the machine tool of the present invention includes: a bed divided into a machining area and a non-machining area; a pair of columns disposed in the non-machining area of ​​the bed, facing each other, and each capable of moving independently along an axial direction; a pair of rams disposed on the pair of columns, each capable of moving independently along two axes different from the direction of movement of the pair of columns; a pair of spindles disposed at each front end of the pair of rams, each capable of rotating independently along two different axes different from the direction of movement of the pair of rams; a pair of bases fixedly disposed facing each other in the machining area of ​​the bed; a pair of saddles disposed facing each other on the pair of bases such that they are movable along an axial direction different from one axis of the pair of columns, two axes of the pair of rams, and two axes of the pair of spindles; and a rotary table rotatably disposed on the pair of saddles along an axial direction different from one axis of the pair of columns, two axes of the pair of rams, two axes of the pair of spindles, and one axis of the pair of saddles, for placing a workpiece to be machined by the pair of spindles.

[0044] Furthermore, in other preferred embodiments of the machine tool of the present invention, the machine tool may also include a pair of tool changing units that accommodate multiple tools and are respectively fixedly arranged on both sides of the moving direction of a pair of columns in the non-machining area of ​​the bed, so that tool changing is performed by moving the pair of columns and the pair of spindles respectively.

[0045] Furthermore, in other preferred embodiments of the machine tool of the present invention, the pair of columns of the machine tool are respectively formed into a shaft system that moves in the left-right direction, the pair of slides are respectively formed into two shaft systems that move in the front-back direction and the up-down direction, the pair of spindles are respectively formed into two shaft systems that rotate with the left-right direction as a reference or with the front-back direction as a reference, the pair of saddles are respectively formed into a shaft system that moves in the front-back direction, and the rotary table can form a shaft system that rotates in one direction with the left-right direction as a reference.

[0046] Furthermore, in another preferred embodiment of the machine tool of the present invention, the machine tool moves independently or synchronously along the seven axes formed by the pair of columns, the pair of slides, the pair of spindles, the pair of saddles and the rotary table to perform machining, so as to simultaneously or independently process a part of a large workpiece, and to perform machining of the six sides of the large workpiece (top, bottom, left, right and front) in one setup and one operation.

[0047] To achieve another objective of the present invention, the machine tool according to the present invention includes: a first bed disposed in a non-machining area and a second bed disposed in a machining area in a longitudinal direction relative to the first bed; a first column and a second column opposite to each other in a left-right direction on the upper part of the first bed and each independently movable in a left-right direction; a first ram disposed on the first column movable in both a longitudinal and vertical direction, and a second ram disposed on the second column independently of the first ram movable in both a longitudinal and vertical direction; and a first tool detachably mounted and rotatable based on either a longitudinal or left-right direction reference. The system comprises: a first spindle disposed at the front end of the first ram; a second spindle that can be detachably mounted on a second tool and is rotatably disposed at the front end of the second ram independently of the first spindle, based on a front-rear and left-right directional reference; a first base and a second base that are fixedly disposed opposite to each other on the upper part of the second bed in the left-right direction; a first saddle that is movable in the front-rear direction on the upper part of the first base; a second saddle that is movable in the front-rear direction on the upper part of the second base; and a rotary table that is rotatably disposed between the first saddle and the second saddle, based on a left-right directional reference.

[0048] Furthermore, in another preferred embodiment of the machine tool of the present invention, the first slide of the machine tool is disposed inside the first column in the left-right direction, and the second slide can be disposed opposite to the first slide in the left-right direction inside the second column.

[0049] Furthermore, in another preferred embodiment of the machine tool of the present invention, the first ram of the machine tool includes: a first slide seat, which is movably disposed on the inner side of the first column in the left-right direction along the vertical direction of the first column; and a first ram body, which moves relative to the first slide seat in the front-back direction. The second ram includes: a second slide seat, which moves along the vertical direction of the second column and is disposed opposite to the first slide seat on the inner side of the second column in the left-right direction; and a second ram body, which moves relative to the second slide seat in the front-back direction.

[0050] Furthermore, in another preferred embodiment of the machine tool of the present invention, the machine tool may further include: a first tool changing unit, which accommodates a plurality of tools and is fixedly disposed on one side of the first bed, and performs tool changing with the first spindle by moving the first column, the first slide, and the first spindle; and a second tool changing unit, which accommodates a plurality of tools and is fixedly disposed on the other side of the first bed opposite to the first tool changing unit in the left-right direction, and performs tool changing with the second spindle by moving the second column, the second slide, and the second spindle.

[0051] Furthermore, in another preferred embodiment of the machine tool of the present invention, the first column and the second column of the machine tool each form an independent axis system that moves in the left-right direction, the first slide and the second slide each form two independent axis systems that move independently in the front-back direction and the up-down direction, the first spindle and the second spindle each form two independent axis systems that rotate with the left-right direction as a reference or with the front-back direction as a reference, the first saddle and the second saddle each form an independent axis system that moves in the front-back direction, and the rotary table can form an axis system that rotates in one direction with the left-right direction as a reference.

[0052] Furthermore, in another preferred embodiment of the machine tool of the present invention, the machine tool uses a first system consisting of seven independent axes formed by the first column, the first slide, the first spindle, the first saddle, the second saddle, and the rotary table, and a second system consisting of seven independent axes formed by the second column, the second slide, the second spindle, the first saddle, the second saddle, and the rotary table, to simultaneously or independently process a portion of a large workpiece, enabling the machining of the six sides (top, bottom, left, right, front, and back) of the large workpiece to be performed in one setup and one operation.

[0053] Furthermore, in another preferred embodiment of the machine tool of the present invention, the rotary table of the machine tool includes: a first engagement portion rotatably engaged with the first saddle; a second engagement portion rotatably engaged with the second saddle; a placement portion extending between the first engagement portion and the second engagement portion for placing a workpiece to be processed; and a clamping portion for clamping the workpiece placed in the placement portion.

[0054] Invention Effects

[0055] The machine tool of the present invention, through its optimized layout capable of performing multi-axis two-system machining, is not only suitable for general materials, but also for large materials. It avoids interference between the worktable where the two spindles clamp the material, and uses the two spindles simultaneously or independently to perform six-sided machining accurately and quickly, thus achieving the aforementioned effects.

[0056] Furthermore, the machine tool according to the present invention processes six sides of a large workpiece simultaneously or independently using two spindles. In order to maximize the processing area, the proximity distance between the two spindles is minimized to increase the processing range, thereby improving the versatility and productivity of the machine tool and maximizing its safety and reliability.

[0057] Furthermore, the machine tool of the present invention achieves six-sided machining of large materials through an optimized layout, and unlike the traditional method, it focuses on compactness to maximize space utilization and reduce manufacturing costs, thus achieving such effects.

[0058] The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description. Attached Figure Description

[0059] Figure 1 The diagram shows a conceptual design of a machine tool of the present invention, which has seven axes and is capable of performing machining on two systems.

[0060] Figure 2 and Figure 3 Show Figure 1 The machine tool of the present invention is shown in a conceptual diagram of the operation of a system of axes that move in the front-back direction of the rotary table and a system of axes that rotate the rotary table, as well as seven axes and a transfer unit that enables the operation of the seven axes, in a state where some components are deleted.

[0061] Figure 4 and Figure 5 This is a conceptual diagram illustrating the state in which a pair of columns in the machine tool of the present invention move independently along three axes.

[0062] Figure 6 This is a conceptual diagram showing a pair of columns moving and performing tool changes in a machine tool according to the present invention.

[0063] Figure 7 Indicates in Figure 6 A conceptual diagram showing the state of the first spindle changing tools through the first tool changing unit.

[0064] Figure 8 This is a conceptual diagram showing a state in which a pair of spindles rotate along two axis systems to machine the side of a workpiece in the machine tool of the present invention.

[0065] Symbol Explanation

[0066] 1: Machine tool; 10: Bed module; 20: First machining module; 30: Second machining module; 50: Workpiece module; 80: Tool changing module; 90: Cover module; 100: Bed; 110: First bed; 120: Second bed; 200: Pair of columns; 210: First column; 220: Second column; 300: Pair of rams; 310: First ram; 320: Second ram; 400: Pair of spindles; 41 0: First spindle, 420: Second spindle, 500: Pair of bases, 510: First base, 520: Second base, 600: Pair of saddles, 610: First saddle, 620: Second saddle, 700: Rotary table, 800: Pair of tool changers, 810: First tool changer, 820: Second tool changer, 900: Cover, 1000: Transfer unit, C1: First system, C2: Second system. Detailed Implementation

[0067] Detailed description is provided with reference to the machine tool drawings illustrating embodiments of the present invention. The embodiments described below are provided as examples so that the spirit of the invention can be fully conveyed to those skilled in the art. Therefore, the present invention is not limited to the embodiments described below and may be embodied in other forms. Furthermore, for convenience, the dimensions and thickness of the device may be exaggerated in the drawings. Throughout the specification, the same reference numerals denote the same constituent elements.

[0068] The advantages and features of the present invention, as well as the ways in which they are implemented, will become apparent from the embodiments detailed in the accompanying drawings. However, the present invention is not limited to the embodiments shown below, but can be implemented in various different forms. These embodiments are only provided to complete the disclosure of the invention and to provide those skilled in the art with a full understanding of the scope of the invention, which is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same constituent elements. In the drawings, the dimensions and relative dimensions of the layers and regions may be exaggerated for clarity of illustration.

[0069] The terminology used in this specification is for illustrative purposes and is therefore not intended to limit the invention. In this specification, the singular form includes the plural form unless otherwise specifically mentioned. The use of "comprise" and / or "comprising" in this specification does not exclude the possibility that one or more other components, steps, actions, and / or elements may be present in the described elements.

[0070] Figure 1 The diagram shows a conceptual illustration of a machine tool of the present invention, each having seven axes and capable of performing machining on two systems.

[0071] Figure 2 and Figure 3 Shown in Figure 1 The machine tool of the present invention shown is a conceptual diagram of the operation of a system of axes that move in the front-back direction of the rotary table and a system of axes that rotate the rotary table, with some components removed, as well as seven axes and a transfer unit that enables the operation of the seven axes.

[0072] Figure 4 and Figure 5 A conceptual diagram showing the state in which a pair of columns in the machine tool of the present invention move independently along three axes is shown.

[0073] Figure 6 This is a conceptual diagram illustrating the state in which a pair of columns in the machine tool of the present invention move to perform tool changing.

[0074] Figure 7 Indicates in Figure 6 A conceptual diagram showing the state of the first spindle changing tools through the first tool changing unit.

[0075] Figure 8 This is a conceptual diagram illustrating the state in which a pair of spindles in the machine tool of the present invention rotate along two axis systems to machine the side of a workpiece.

[0076] The following definitions apply to the terminology used. "Left and right direction" refers to the horizontal direction within the same component, i.e. Figures 1 to 8 The X-axis direction; the "front-to-back direction" refers to the width direction within the same component, orthogonal to the left-to-right direction. Figures 1 to 8 The Y-axis direction; the "vertical direction" refers to the height direction within the same component, orthogonal to the left-right and front-back directions. Figures 1 to 8 The Z-axis direction. Furthermore, "above (upper part)" refers to the upper direction in the height direction, i.e. Figures 1 to 8 The upper direction of the Z-axis; "lower" refers to the lower direction in the height direction, i.e. Figures 1 to 8 The direction below the Z-axis.

[0077] Reference Figures 1 to 8The machine tool 1 of the present invention is described.

[0078] like Figures 1 to 8 As shown, a machine tool 1 according to an embodiment of the present invention includes a bed module 10, a workpiece module 50, a first processing module 20, a second processing module 30, a tool changing module 80, and a cover module 90.

[0079] The bed module 10 is divided into a processing area and a non-processing area.

[0080] That is, the processing area refers to the area where the workpiece is processed by the first processing module and the second processing module, and the non-processing area refers to the area where the workpiece is not processed.

[0081] Furthermore, this bed module 10 can preferably form the configuration of the bed 100 described later.

[0082] The workpiece module 50 is configured in the processing area of ​​the bed module 10, and with the workpiece to be processed placed therein, the workpiece to be processed is moved and rotated along an axis according to the processing technology.

[0083] Furthermore, this workpiece module 50 can preferably be composed of a pair of bases 500, a pair of saddles 600, and a rotary table 700, as described later.

[0084] The first processing module 30 is configured in the non-processing area of ​​the bed module and is capable of multi-axis movement and rotation independently of the workpiece module to process the workpiece placed in the workpiece module.

[0085] Furthermore, the first processing module 20 may preferably be composed of a first column 210 of a pair of columns 200, a first slide 310 of a pair of slides 300, and a first spindle 410 of a pair of spindles 400, as described later.

[0086] The second processing module 30 is configured in the non-processing area of ​​the bed module. It is independent of the workpiece module and the first processing module and can perform multi-axis movement and rotation to process the workpiece placed on the workpiece module simultaneously with the portion processed by the first processing module, or process them independently.

[0087] Furthermore, the second processing module 30 may preferably be composed of the second column 220 of the pair of columns 200, the second slide 320 of the pair of slides 300, and the second spindle 420 of the pair of spindles 400.

[0088] The tool changing module 80 accommodates multiple tools, which are respectively arranged on both sides of the non-machining area of ​​the bed module, and performs tool changing with the first machining module and the second machining module respectively.

[0089] Furthermore, these tool changing modules 80 can preferably be formed by a pair of tool changing units 800 described later.

[0090] A cover module 90 is configured on the bed module to divide the bed module into a processing area and a non-processing area.

[0091] Furthermore, such a cover module 90 can preferably form the configuration of the cover portion 900 described later.

[0092] These cover modules 90 or cover sections 900 can be configured as multiple covers.

[0093] Furthermore, in one embodiment of the present invention, the workpiece module 50 of the machine tool 1 moves along one direction (Y-axis) on the bed module and rotates along one direction with the left-right direction (X-axis) as a reference, forming two axis systems.

[0094] Furthermore, according to an embodiment of the present invention, the first machining module and the second machining module of the machine tool 1 move in three directions: left-right (X-axis), front-back (Y-axis), and up-down (Z-axis), respectively, and rotate in two directions with the left-right (X-axis) and front-back (Y-axis) as references, forming five axis systems.

[0095] Furthermore, in one embodiment of the present invention, the machine tool 1 has two systems C1 and C2 with seven axes respectively, which execute the workpiece module, the first machining module and the second machining module independently, thereby enabling simultaneous or independent machining of a part of a large workpiece 2, and performing machining of the six sides of the large workpiece (top, bottom, left, right and front) in one setup and one operation.

[0096] These shaft systems are moved or rotated in the corresponding direction by the transfer unit 1000 used to move the corresponding shaft system.

[0097] Thus, the machine tool of one embodiment of the present invention, through an optimized layout capable of multi-axis two-system machining, can not only perform six-sided machining on general materials, but also on large materials simultaneously or independently, and achieves overall compactness to maximize space utilization.

[0098] like Figures 1 to 8 As shown, a machine tool 1 according to another embodiment of the present invention includes a bed 100, a pair of columns 200, a pair of slides 300, a pair of spindles 400, a pair of bases 500, a pair of saddles 600, a rotary table 700, a pair of tool changing units 800, and a cover.

[0099] The bed 100 is divided into a machining area 110 and a non-machining area 120.

[0100] This type of machine bed is installed on the ground, base, or foundation, forming a space for a pair of columns, a pair of rams, a pair of spindles, a pair of saddles, a rotary table, a pair of tool changers, and a cover, as described later.

[0101] A pair of columns 200 are arranged in the non-machining area of ​​the aforementioned bed, facing each other, and each can move independently along an axial direction.

[0102] The pair of slides 300 are each independently mounted on the pair of columns, capable of moving independently along two axes that are different from the direction of movement of the pair of columns.

[0103] A pair of spindles 400 are rotatably disposed at the respective front ends of the pair of slides along two axes that are different from the direction of movement of the pair of slides.

[0104] A pair of bases 500 are fixedly arranged opposite each other in the machining area of ​​the bed.

[0105] The pair of saddles 600 are arranged opposite each other on the pair of bases in a manner that allows them to move along an axis that is different from one axis of the pair of columns, two axes of the pair of slides, and one axis of the pair of spindles.

[0106] The rotary table 700 is rotatably mounted on the pair of saddles along an axis that is different from one axis of the pair of columns, two axes of the pair of slides, two axes of the pair of spindles, and one axis of the pair of saddles, and is used to place the workpiece 2 to be processed by the pair of spindles.

[0107] A pair of tool changing units 800 accommodate multiple tools and are respectively fixedly arranged on both sides of the moving direction of the pair of columns in the non-machining area of ​​the bed. The tool changing is performed by the movement of the pair of columns and the separate operation of the pair of spindles.

[0108] Furthermore, according to another embodiment of the machine tool 1, the pair of columns respectively form a shaft system that moves in the left-right direction, the pair of slides respectively form two shaft systems that move in the front-back direction and the up-down direction, the pair of spindles respectively form two shaft systems that rotate with the left-right direction as a reference or with the front-back direction as a reference, the pair of saddles respectively form a shaft system that moves in the front-back direction, and the rotary table forms a shaft system that rotates in one direction with the left-right direction as a reference.

[0109] Furthermore, according to an embodiment of the present invention, the machine tool 1, as the pair of columns, the pair of slides, the pair of spindles, the pair of saddles and the rotary table move independently or synchronously along the seven axes formed therein and perform machining, can simultaneously or independently machine a part of a large workpiece, and perform machining of the six sides of the large workpiece (upper, lower, left, right and front) in one setup and one operation.

[0110] The machine tool of this invention, through its optimized layout, performs six-sided machining of large materials while, unlike traditional methods, focusing on compactness to maximize space utilization and reduce manufacturing costs.

[0111] like Figures 1 to 8 As shown, the machine tool 1 of another embodiment of the present invention includes a first bed 110 and a second bed 120, a first column 210 and a second column 220, a first slide 310 and a second slide 320, a first spindle 410 and a second spindle 420, a first base 510 and a second base 520, a first saddle 610 and a second saddle 620, a rotary table 700, a first tool changing unit 810 and a second tool changing unit 820, a cover 900, and a transfer unit 1000.

[0112] A first bed 110 is arranged in the non-processing area, and a second bed 120 is arranged in the processing area along the front-back direction with the first bed.

[0113] That is, the first bed and the second bed are formed in a long left-right direction, and in order to maintain rigidity, they are assembled into a single unit.

[0114] The first column 210 and the second column 220 are arranged on the upper part of the first bed in a manner that is opposite to each other in the left-right direction (X1 axis) and can be moved independently in the left-right direction (X1 axis) by the transfer unit 1000.

[0115] That is, the first column and the second column are positioned opposite each other in the left-right direction on the upper part of the first bed, forming a shaft system that moves the transfer part in the left-right direction by moving the first column and the second column by a predetermined distance.

[0116] The first slide 310 is configured to move in the front-back direction (Y-axis) and the up-down direction (Z-axis) on the first column 210, and the second slide 320 is configured independently of the first slide 310 on the second column 220 to move in the front-back direction (Y1-axis) and the up-down direction (Z1-axis).

[0117] That is, the first slide is movable in the front-back direction (Y1 axis) and the up-down direction (Z1 axis) and is disposed inside the left-right direction (X1 axis) of the first column. The second slide is opposite to the first slide in the left-right direction (Y1 axis) and is independently disposed on the second column in the left-right direction (Y1 axis) and the up-down direction (Z1 axis) of the second column.

[0118] Specifically, the first slide block 310 includes: a first slide block 311, which is movably disposed on the inner side of the first column in the left-right direction along the vertical direction (Z1 axis) of the first column 210; and a first slide block body, which moves relative to the first slide block 311 in the front-back direction (Y1 axis). The first slide block 311 forms a shaft system by moving relative to the first column 210 in the vertical direction through the transfer part 1000, and the first slide block body 312 forms a shaft system by moving relative to the first slide block 311 in the front-back direction (Y1 axis) through the transfer part 1000.

[0119] The second slide block 320 includes: a second slide seat 321, which moves along the vertical direction of the second column 220 and is disposed opposite to the first slide seat on the inner side of the second column in the horizontal direction; and a second slide block body, which moves relative to the second slide seat in the front-back direction.

[0120] Specifically, the second slide block 320 includes a second slide seat 321 that is movably disposed on the inner side of the second column 220 in the left-right direction along the vertical direction (Z2 axis) of the second column, and a second slide block body 322 that moves relative to the second slide seat in the front-back direction (Y2 axis). The second slide seat forms a shaft system by moving relative to the second column in the vertical direction through the transfer part 1000, and the second slide block body 322 forms a shaft system by moving relative to the second slide seat in the front-back direction through the transfer part 1000.

[0121] Therefore, a column moving structure is formed in which each of the first column 210 and the second column 220 moves along three axes in the upper part of the first bed: left and right (X1 axis, X2 axis), front and back (Y1 axis, Y2 axis), and up and down (Z1 axis, Z2 axis).

[0122] The first spindle 410 is detachably mounted with the first tool 411 and is rotatably positioned at the front end of the first slide with reference to the front-back direction or the left-right direction (A1 axis, B1 axis).

[0123] The second spindle 420 is detachably mounted with the second tool 421 and is rotatably (A2 axis, B2 axis) positioned at the front end of the second slide independently of the first spindle, based on the front-back direction reference and the left-right direction reference.

[0124] On the other hand, the first spindle 410 and the second spindle 420 can be respectively formed as orthogonal milling heads rotating on two axes (A-axis and B-axis).

[0125] Thus, the first spindle with axes A1 and B1 and the second spindle with axes A2 and B2 form a universal head with two rotating axes.

[0126] The first base 510 and the second base 520 are fixedly arranged opposite each other in the left-right direction (X-axis) on the upper part of the second bed 120.

[0127] The first saddle 610 is movably disposed on the upper part of the first base in the front-rear direction (V1 axis).

[0128] The second saddle 620 is movable in the front-rear direction (V1 axis) and is positioned on the upper part of the second base.

[0129] The rotary table 700 is configured to rotate (W1 axis) with the left and right directions as a reference between the first saddle and the second saddle.

[0130] like Figures 2 to 3 As shown, the rotary table 700 of the machine tool 1 according to another embodiment of the present invention includes: a first engagement portion 710 rotatably engaged with the first saddle 610; a second engagement portion 720 rotatably engaged with the second saddle 620; a placement portion 730 extending between the first engagement portion and the second engagement portion for placing a workpiece 2 to be processed; and a clamping portion 740 for clamping the workpiece placed on the placement portion.

[0131] Thus, the rotary table is stably formed and rotates on the first and second saddles. As the rotary table is set on the first and second saddles, it has a shaft system that transfers the workpiece along the V-axis parallel to the Y-axis and a shaft system that allows the workpiece to rotate independently relative to the first and second spindles.

[0132] In addition, such as Figure 1 , Figure 6 and Figure 7 As shown, another embodiment of the machine tool 1 of the present invention includes: a first tool changing unit 810, which accommodates a plurality of tools and is fixedly disposed on one side of the first bed, and performs tool changing with the first spindle by moving the first column, the first slide and the first spindle; and a second tool changing unit 820, which accommodates a plurality of tools and is fixedly disposed on the other side of the first bed opposite to the first tool changing unit in the left-right direction, and performs tool changing with the second spindle by moving the second column, the second slide and the second spindle.

[0133] Thus, the first tool changing unit, which performs tool changing with the first spindle, is located on the moving area of ​​the first column of the first bed, and the second tool changing unit, which performs tool changing with the second spindle, is independently located on the moving area of ​​the second column of the second bed. The first spindle and the second spindle can not only perform the same machining independently or simultaneously, but also achieve machine tool miniaturization by minimizing the movement time and distance required for tool changing, and improve productivity by reducing non-machining time such as tool changing. The first tool changing unit and the second tool changing unit are stably set on the first bed to maximize the safety of the machine tool.

[0134] In another embodiment of the present invention, the first column and the second column of the machine tool 1 are each formed into an independent axis system that moves in the left-right direction (X-axis), the first slide and the second slide are each formed into two independent axis systems (A-axis and B-axis) that move independently in the front-back direction (Y-axis) and the up-down direction (Z-axis), the first spindle and the second spindle are each formed into two independent axis systems that rotate with the left-right direction as a reference or with the front-back direction as a reference, the first saddle and the second saddle are each formed into an independent axis system that moves in the front-back direction (V1-axis), and the rotary table is formed into an axis system (W-axis) that rotates in one direction with the left-right direction as a reference.

[0135] In another embodiment of the present invention, the machine tool 1 uses a first system C1 consisting of seven independent axes (X1, Y1, Z1, A1, B1, V1, W) of the first column, the first slide, the first spindle, the first saddle, the second saddle, and the rotary table, and a second system C2 consisting of seven independent axes (X2, Y2, Z2, A2, B2, V1, W) of the second column, the second slide, the second spindle, the first saddle, the second saddle, and the rotary table, to process a portion of a large workpiece simultaneously or independently, thereby performing machining of the six sides (top, bottom, left, right, front, and back) of the large workpiece in one setup and one operation.

[0136] Each of the first columns, second columns, first slides, first ram bodies, second slides, second ram bodies, first saddles, and second saddles, and its respective transfer unit 1000 includes a ball screw extending along the movement direction of the corresponding axis and LM guide rails spaced at predetermined intervals between the ball screws, so as to enable stable movement, reduce vibration and noise generated during movement, improve machining accuracy, and facilitate the operator's operation.

[0137] Thus, the machine tool according to the present invention, through an optimized layout capable of performing multi-axis two-system machining, achieves not only machining of ordinary materials but also machining of large materials, by avoiding interference between the worktable and the clamping table of the material by the two spindles, and by using the two spindles simultaneously or independently to perform six-sided machining accurately and quickly. In order to maximize the machining area, the proximity distance between the two spindles is minimized to expand the machining range, improve the versatility and productivity of the machine tool, maximize the safety and reliability of the machine tool, and through the optimized layout, when machining six sides of large materials, unlike the conventional method, the equipment is compact, maximizes space utilization, reduces manufacturing costs, minimizes vibration and noise, and thus improves machining accuracy.

[0138] As described above, the detailed description of the present invention refers to preferred embodiments of the invention. However, those skilled in the art or with general knowledge of the art will understand that various modifications and alterations can be made to the present invention without departing from the scope of the ideas and technical field of the invention as set forth in the following claims. Therefore, the technical scope of the present invention is not limited to the contents described in the detailed description, but should be determined by the claims.

Claims

1. A machine tool, characterized in that, include: The bed module is divided into machining and non-machining areas; The workpiece module, which is configured in the processing area of ​​the bed module, moves and rotates the workpiece about one axis when the workpiece to be processed is placed therein, according to the processing technology. A first processing module, which is configured to move and rotate independently of the workpiece module in a multi-axis manner in the non-processing area of ​​the bed module, in order to process the workpiece placed in the workpiece module; as well as The second processing module is configured to move and rotate independently of the workpiece module and the first processing module in the non-processing area of ​​the bed module, so as to simultaneously process the part of the workpiece placed in the workpiece module that was processed by the first processing module, or process them separately and independently.

2. The machine tool according to claim 1, characterized in that, It also includes a tool changing module, which can accommodate multiple tools and is respectively arranged on both sides of the non-machining area of ​​the bed module to change tools with the first machining module and the second machining module respectively.

3. The machine tool according to claim 1, characterized in that, It also includes a cover module configured on the bed module to divide the processing area and non-processing area of ​​the bed module.

4. The machine tool according to claim 1, characterized in that, The workpiece module moves along one direction (front-back) on the bed module and rotates in another direction (left-right) to form two shaft systems.

5. The machine tool according to claim 4, characterized in that, The first processing module and the second processing module move in three directions: left and right, front and back, and up and down, respectively, and rotate in two directions with the left and right and front and back as references to form five axis systems.

6. The machine tool according to claim 5, characterized in that, The workpiece module, the first processing module, and the second processing module work independently to perform two systems processing with seven axes, simultaneously or independently processing a part of a large workpiece, performing the processing of the top, bottom, left, right, front, and back six sides of the large workpiece in one setup and one operation.

7. A machine tool, characterized in that, include: The machine bed is divided into a machining area and a non-machining area; A pair of columns are arranged opposite each other in the non-machining area of ​​the bed, and each is capable of moving independently along an axis; A pair of rams, each of which is independently movable along two axes that are different from the direction of movement of the pair of columns, are respectively disposed on the pair of columns; A pair of spindles, each rotatably disposed at the front end of the pair of slides along two axes that are different from the direction of movement of the pair of slides; A pair of bases are fixedly disposed opposite each other in the machining area of ​​the bed; A pair of saddles are arranged opposite each other on a pair of bases in such a way that they can move along an axis that is different from one axis of the pair of columns, two axes of the pair of slides and two axes of the pair of spindles; as well as A rotary table is rotatably mounted on a pair of saddles along an axis that is different from one axis of the pair of columns, two axes of the pair of slides, two axes of the pair of spindles, and one axis of the pair of saddles, and is used to place workpieces to be processed by the pair of spindles.

8. The machine tool according to claim 7, characterized in that, It also includes a pair of tool changing units, each of which accommodates multiple tools and is fixedly arranged on both sides of the moving direction of the pair of columns in the non-machining area of ​​the bed. The tool changing is performed by moving the pair of columns and the pair of spindles respectively.

9. The machine tool according to claim 7, characterized in that, The pair of columns each form an axis system that moves in the left-right direction. The pair of slides are respectively formed by two shaft systems that move in the front-back direction and the up-down direction. The pair of main shafts respectively form two shaft systems that rotate with the left-right direction as a reference or with the front-back direction as a reference. The pair of saddles are each formed on a shaft system that moves in the front-to-back direction. The rotary table forms an axis system that rotates in one direction with the left and right directions as a reference.

10. The machine tool according to claim 9, characterized in that, As the pair of columns, the pair of slides, the pair of spindles, the pair of saddles, and the rotary table move independently or synchronously along the seven axes they form, a portion of a large workpiece is processed simultaneously or independently, and the machining of the six sides (top, bottom, left, right, front, and back) of the large workpiece is performed in one setup and one operation.

11. A machine tool, characterized in that, include: A first bed disposed in a non-processing area and a second bed disposed in a processing area in a front-rear direction with respect to the first bed; The first and second columns on the upper part of the first bed are opposite to each other in the left and right directions and can move independently in the left and right directions; A first slide block that is movable in the front-back and up-down directions on the first column, and a second slide block that is movable in the front-back and up-down directions on the second column independently of the first slide block; A first spindle capable of detachably mounting a first tool and rotatably configured at the front end of the first ram based on a front-rear or left-right direction reference; and a second spindle capable of detachably mounting a second tool and rotatably configured at the front end of the second ram independently of the first spindle based on a front-rear and left-right direction reference. A first base and a second base are fixedly disposed opposite to each other on the upper part of the second bed in the left-right direction; A first saddle that is movable in the front-rear direction and disposed on the upper part of the first base, and a second saddle that is movable in the front-rear direction and disposed on the upper part of the second base; as well as A rotary table that is rotatable between the first saddle and the second saddle with a left-right directional reference.

12. The machine tool according to claim 11, characterized in that, The first ram is located on the inner side of the first column in the left-right direction. The second slide is disposed on the inner side of the second column in the left-right direction opposite to the first slide.

13. The machine tool according to claim 11, characterized in that, The first ram includes: A first slide block, which is movably disposed on the inner side of the first column in the left-right direction along the vertical direction of the first column; and The first slide block body moves in the front-to-back direction relative to the first slide seat. The second bolster includes: The second slide block moves vertically along the second column and is disposed opposite the first slide block on the inner side of the second column in the left-right direction; and The second slide body moves in the front-back direction relative to the second slide block.

14. The machine tool according to claim 11, characterized in that, Also includes: A first tool changing unit, which accommodates multiple tools and is fixedly configured on one side of the first bed, performs tool changing with the first spindle through the movement of the first column, the first ram, and the first spindle; and The second tool changing unit accommodates multiple tools and is fixedly disposed on the other side of the first bed opposite the first tool changing unit in the left-right direction. Tool changing is performed with the second spindle by moving the second column, the second slide, and the second spindle.

15. The machine tool according to claim 11, characterized in that, The first column and the second column each form an independent axis system that moves in the left-right direction. The first slide and the second slide each form two independent shaft systems that can move independently in the front-back direction and the up-down direction. The first spindle and the second spindle each form two independent axis systems that rotate with the left-right direction as a reference or with the front-back direction as a reference. The first saddle and the second saddle each form an independent shaft system that moves in the front-to-back direction. The rotary table forms an axis system that rotates in one direction with the left and right directions as a reference.

16. The machine tool according to claim 15, characterized in that, A first system consisting of seven independent axes, including the first column, the first slide, the first spindle, the first saddle, the second saddle, and the rotary table, and a second system consisting of seven independent axes, including the second column, the second slide, the second spindle, the first saddle, the second saddle, and the rotary table, allows for the simultaneous or independent processing of a portion of a large workpiece, enabling the machining of all six sides (top, bottom, left, right, front, and back) of the workpiece in a single setup and operation.

17. The machine tool according to claim 11, characterized in that, The rotary table includes: The first connecting part is rotatably connected to the first saddle; The second connecting part is rotatably connected to the second saddle. A placement portion, extending between the first joint portion and the second joint portion, is used to place the workpiece to be processed; and A clamping part, which is used to clamp the workpiece placed in the placement part.

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