Top-opening structure for dual-tool magazine vertical machining centers and vertical machining centers

Abstract

This application discloses a top-opening structure for a dual-tool magazine vertical machining center and the vertical machining center itself. The top-opening structure includes: a machine tool crossbeam, located on top of the machine tool body, comprising a convex crossbeam and end crossbeams connected to both ends of the convex crossbeam; a pair of crossbeam doors, located above the worktable of the machine tool body and pivotally connected to the convex crossbeams; a pair of track grooves, each located on one end of the end crossbeam; and a pair of sliding components, located above the machine tool crossbeam. One end of each sliding component is fixedly connected to a crossbeam door on the same side, and the other end is slidably connected to a track groove on the same side. When the machine tool needs to process a workpiece, the sliding components slide on the track grooves, causing the crossbeam doors to rotate and open, allowing the workpiece to be directly placed on the worktable. Through this method, this application can improve the working efficiency and service life of the machine tool.

Description

Technical Field

[0001] This application relates to the field of mechanical equipment technology, and in particular to a top-opening structure for a dual-tool magazine vertical machining center and a vertical machining center. Background Technology

[0002] Currently, due to the imperfect design of the crossbeam structure of existing dual-tool magazine vertical machining centers, it is impossible to simultaneously solve the problems of one-time loading and poor overall machine tool strength, resulting in low machine tool efficiency and short service life. Therefore, improving machine tool efficiency and service life has become an urgent problem to be solved. Summary of the Invention

[0003] The main technical problem addressed by this application is to provide a top-opening structure for a dual-tool magazine vertical machining center and a vertical machining center, which can improve the working efficiency and service life of the machine tool.

[0004] To address the aforementioned technical problems, the first aspect of this application provides a top-opening structure for a dual-tool magazine vertical machining center, comprising: a machine tool crossbeam disposed on the top of the machine tool body, including a convex crossbeam and end crossbeams respectively connected to both ends of the convex crossbeam; a pair of crossbeam doors disposed above the worktable of the machine tool body and pivotally connected to the convex crossbeams respectively; a pair of track grooves respectively disposed on the end crossbeams; and a pair of sliding components located above the machine tool crossbeam; wherein, one end of each sliding component is fixedly connected to the crossbeam door on the same side, and the other end is slidably connected to the track groove on the same side; wherein, when the machine tool needs to process a workpiece, the sliding components slide on the track grooves, causing the crossbeam doors to rotate and open, so that the workpiece can be directly placed on the worktable.

[0005] The top opening and closing structure further includes: a pair of sliding doors slidably connected to the end crossbeam; and a pair of opening and closing brackets, each of which is fixedly connected to the sliding door and located at one end near the machine tool crossbeam. When the sliding door and the crossbeam door are fully closed, the center line of the sliding door and the center line of the crossbeam door are coaxially arranged. When the sliding door is opened, the opening and closing brackets move together with the sliding door and drive the sliding assembly to slide.

[0006] The bottom surface of the opening and closing bracket is provided with at least one first hole, and the upper surface of the sliding door is provided with the same number of matching second holes at the positions corresponding to the first holes. The top opening and closing structure also includes: multiple first fixing members; wherein, when the first holes and the second holes correspond one-to-one, and the multiple first fixing members are inserted into the first holes and the second holes and tightened, the bottom surface of the opening and closing bracket abuts against the upper surface of the sliding door.

[0007] The sliding assembly includes: a fixing block fixed to the crossbeam door; a connecting assembly connected to the fixing block; and a first sliding block slidably disposed on the track groove and connected to the connecting assembly.

[0008] The connecting component includes: a first connecting rod connected to the fixed block; a second sliding block connected to the first connecting rod and slidably disposed on the track groove; and a second connecting rod, one end of which is connected to the second sliding block and the other end of which is connected to the first sliding block.

[0009] The first connecting rod has first through holes at both ends, the fixed block has a matching second through hole on its side, and the second sliding block has a matching third through hole on its side. The top opening and closing structure also includes a plurality of second fixing members. When the first through hole corresponds to the second through hole, and the second fixing member is inserted through the first through hole and the second through hole and tightened, the fixed block is fixedly connected to the first connecting rod. When the first through hole corresponds to the third through hole, and the second fixing member is inserted through the first through hole and the third through hole and tightened, the second sliding block is fixedly connected to the first connecting rod.

[0010] The second sliding block has a fourth through hole on one side surface facing the first sliding block, and the first sliding block has a fifth through hole on its side surface. When one end of the second connecting rod passes through the fourth through hole and is tightened, and the other end of the second connecting rod passes through the fifth through hole and is tightened, the second connecting rod is connected to the first sliding block and the second sliding block.

[0011] The beam door is pivotally connected to the protruding beam via a hinge, and the beam door has a symmetrical structure.

[0012] To solve the above-mentioned technical problems, a second aspect of this application provides a vertical machining center, comprising: the top opening and closing structure described in the first aspect; a machine tool body; wherein the locking mechanism is disposed on the machine tool body.

[0013] The machine tool body includes a left tool magazine and a right tool magazine, both located on one side of the top opening structure; and a worktable located below the top opening structure for placing the workpiece to be processed.

[0014] The beneficial effects of this application are as follows: Unlike the prior art, in the top-opening structure proposed in this application, when the machine tool needs to process the workpiece, the sliding component slides on the track groove, causing the crossbeam door to rotate and open, so that the workpiece can be directly placed on the worktable of the machine tool body without the need for secondary manual loading by the operator, which greatly reduces the time required for the machine tool to clamp the workpiece. In addition, the machine tool crossbeam is still an integral structure with good stability and high strength, thereby improving the working efficiency and service life of the machine tool. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of one embodiment of the top opening and closing structure for a dual-tool magazine vertical machining center according to this application;

[0017] Figure 2 This is a schematic diagram of one embodiment of the sliding component of this application;

[0018] Figure 3 This is a structural schematic diagram of one embodiment of the vertical machining center of this application;

[0019] Figure 4 This is a top view schematic diagram of one embodiment of the vertical machining center of this application. Detailed Implementation

[0020] It should be noted that the terms "first" and "second" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0023] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0024] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0025] This application provides the following embodiments, and each embodiment is described in detail below.

[0026] Please see Figure 1 , Figure 1This is a schematic diagram of one embodiment of the top opening and closing structure of the dual-tool magazine vertical machining center 2 according to this application. The top opening and closing structure 1 proposed in this application includes: a machine tool crossbeam 10, disposed on the top of the machine tool body (not shown), including a protruding crossbeam 100 and end crossbeams 101 respectively connected to both ends of the protruding crossbeam 100; a pair of crossbeam doors 11, disposed above the worktable of the machine tool body, and pivotally connected to the protruding crossbeams 100 respectively; a pair of track grooves 12, respectively disposed on the end crossbeams 101; and a pair of sliding components 13, located above the machine tool crossbeam 10; wherein one end of the sliding component 13 is fixedly connected to the crossbeam door 11 on the same side, and the other end is slidably connected to the track groove 12 on the same side; wherein, when the machine tool needs to process a workpiece (not shown), the sliding component 13 slides on the track groove 12, causing the crossbeam door 11 to rotate and open, so that the workpiece can be directly placed on the worktable (not shown).

[0027] Specifically, the top opening and closing structure 1 is composed of multiple components, including a machine tool crossbeam 10, a pair of crossbeam doors 11, a pair of track grooves 12, and a pair of sliding components 13, etc. The machine tool crossbeam 10 is shaped like a "Z" and includes a protruding crossbeam 100 and end crossbeams 101 connected to both ends of the protruding crossbeam 100. The machine tool crossbeam 10 is located on the top of the machine tool body, and the machine tool crossbeam 10 has a corresponding axis.

[0028] Furthermore, the pair of beam doors 11 include a left beam door and a right beam door located on both sides of the axis, which are pivotally connected to the convex beam 100 respectively. The pair of track grooves 12 include a left track groove and a right track groove located on both sides of the axis. The left track groove is set on the end beam 101 on the side of the left beam door, and the right track groove is set on the end beam 101 on the side of the right beam door.

[0029] Understandably, the pair of sliding components 13 includes a left sliding component and a right sliding component located on both sides of the axis, both located above the machine tool crossbeam 10. One end of the left sliding component is fixedly connected to the left door of the crossbeam, and the other end is slidably connected to the left track groove. One end of the right sliding component is fixedly connected to the right door of the crossbeam, and the other end is slidably connected to the right track groove. When the machine tool needs to process the workpiece, the sliding component 13 slides on the track groove 12, thereby driving the crossbeam door 11 to rotate and open, so that the workpiece can be directly placed on the worktable.

[0030] It should be noted that the convex crossbeam 100 includes a left vertical beam, a transverse beam, and a right vertical beam connected in sequence, wherein the left side of the crossbeam is pivotally connected to the left vertical beam, and the right side of the crossbeam is pivotally connected to the right vertical beam.

[0031] It is understood that the left vertical beam and the horizontal beam are connected at a certain angle, and the left vertical beam is connected at a certain angle to the end beam 101 on the left side of the horizontal beam. Similarly, the right vertical beam and the horizontal beam are connected at a certain angle, and the right vertical beam is connected at a certain angle to the end beam 101 on the right side of the horizontal beam. The included angle at the connection point is usually a right angle, but it can be other angles in other specific implementation scenarios, and this application does not impose specific restrictions on this.

[0032] In some implementation scenarios, the U-shaped machine tool crossbeam 10 is fixed to the top outer protective sheet metal of the machine tool body with screws.

[0033] In some implementation scenarios, the U-shaped machine tool crossbeam 10 is fixed to the top outer protective sheet metal of the machine tool body by welding.

[0034] In some implementation scenarios, the track groove 12 is fixedly installed on the end crossbeam 101 by welding.

[0035] In some implementation scenarios, the track groove 12 is fixed to the end crossbeam 101 by screws.

[0036] In some implementation scenarios, the beam door 11 is pivotally connected to the convex beam 100 via a hinge, and the beam door 11 has a symmetrical structure.

[0037] In some implementation scenarios, the sliding component 13 is an electric cylinder device. After the sliding component 13 is energized, the rotation of the electric motor causes the sliding component 13 to slide on the track groove 12, thereby driving the beam door 11 to rotate and open.

[0038] In some implementation scenarios, the sliding component 13 is provided with a mechanical push structure, which is equipped with an opening and closing device. When the mechanical push structure moves, the opening and closing device on the mechanical push structure will push the sliding component 13, causing the sliding component 13 to slide on the track groove 12, thereby driving the beam door 11 to rotate and open.

[0039] In the top opening and closing structure 1 proposed in this application, when the machine tool needs to process the workpiece, the sliding component 13 slides on the track groove 12, causing the crossbeam door 11 to rotate and open, so that the workpiece can be directly placed on the worktable of the machine tool body without the need for secondary manual loading by the operator, which greatly reduces the time required for the machine tool to clamp the workpiece. In addition, the machine tool crossbeam 10 is still an integral structure with good stability and high strength, thereby improving the working efficiency and service life of the machine tool.

[0040] Please continue reading. Figure 1The top opening and closing structure 1 proposed in this application also includes a pair of sliding doors 14 and a pair of opening and closing brackets 15. The pair of sliding doors 14 are slidably connected to the end crossbeam 101, and each opening and closing bracket 15 is fixedly connected to the sliding door 14 and located at one end close to the machine tool crossbeam 10. When the sliding door 14 and the crossbeam door 11 are fully closed, the center line of the sliding door 14 and the center line of the crossbeam door 11 are coaxially arranged. When the sliding door 14 is opened, the opening and closing bracket 15 moves together with the sliding door 14 and drives the sliding assembly 13 to slide.

[0041] Specifically, a pair of sliding doors 14 includes a left sliding door and a right sliding door, both of which are slidably connected to the end crossbeam 101 via linear guide sliders. A pair of opening and closing brackets 15 includes a left opening and closing bracket and a right opening and closing bracket. The left opening and closing bracket is fixedly connected to the left sliding door, and the right opening and closing bracket is fixedly connected to the right sliding door. Both the left and right opening and closing brackets are located at one end near the machine tool crossbeam 10. When the sliding door 14 is opened, the opening and closing bracket 15 moves with the sliding door 14 and drives the sliding component 13 to slide on the track groove 12. This allows the crossbeam door 11 to be rotated and opened through the sliding component 13, so that the workpiece to be processed can be directly placed on the worktable, improving the working efficiency of the machine tool.

[0042] Furthermore, after the machine tool completes the loading process, the operator closes the sliding door 14. The opening and closing bracket 15 moves together with the sliding door 14 to close. During the closing process, the opening and closing bracket 15 will hit the side of the crossbeam door 11 on the same side. Thus, under the pushing force of the opening and closing bracket 15, the left and right crossbeam doors move together to close. When the machine tool's sliding door 14 is completely closed, the crossbeam door 11 will also be completely closed, so that the entire loading area of ​​the machine tool is closed and sealed. The machine tool forms a complete enclosed space. Therefore, when the machine tool uses the tools in the tool magazine to process the workpiece, the water inside the machine tool will not splash from the machine tool crossbeam 10 to the outside of the machine tool, reducing the water leakage rate of the machine tool.

[0043] In some implementation scenarios, the bottom surface of the opening and closing bracket 15 is provided with at least one first hole (not shown in the figure), and the upper surface of the sliding door 14 is provided with the same number of matching second holes (not shown in the figure) at the position corresponding to the first hole. The top opening and closing structure 1 also includes multiple first fasteners (not shown in the figure). When the first hole and the second hole correspond one-to-one, and the multiple first fasteners are inserted into the first hole and the second hole and tightened, the bottom surface of the opening and closing bracket 15 abuts against the upper surface of the sliding door 14. The installation is simple, the structure is simple, and it is not easily damaged during use, thereby reducing the cost of use.

[0044] Optionally, the number of the first hole can be set according to the actual situation, such as one, two, three, etc. This application does not impose specific restrictions here.

[0045] In other implementation scenarios, the opening and closing bracket 15 can be fixed to the upper surface of the sliding door 14 by welding or other means, thereby improving the stability between the opening and closing bracket 15 and the sliding door 14, without the need to add additional parts, thus saving material costs.

[0046] In some implementation scenarios, please refer to Figure 2 , Figure 2 This is a schematic diagram of one embodiment of the sliding component 13 of this application. The sliding component 13 includes a fixing block 130, a connecting component 131, and a first sliding block 132. The fixing block 130 is fixed on the crossbeam door 11, the connecting component 131 is connected to the fixing block 130, and the first sliding block 132 is slidably disposed on the track groove 12 and is connected to the connecting component 131.

[0047] Specifically, the fixing blocks 130 are fixed to the left and right doors of the crossbeam by welding to form a rigid connection, which can effectively prevent loosening or displacement caused by machine tool vibration or external force, ensuring the reliability of the structure. The connecting component 131 is connected to the fixing blocks 130, and the first sliding block 132 is slidably disposed on the track groove 12 and connected to the connecting component 131. Thus, through the sliding cooperation between the connecting component 131 and the first sliding block 132, and the limiting effect of the track groove 12, the sliding component 13 can drive the crossbeam door 11 to rotate and ensure the smoothness of the movement process.

[0048] In some implementation scenarios, please refer to [the relevant documentation]. Figure 2 The connecting component 131 includes a first connecting rod 1310, a second sliding block 1311, and a second connecting rod 1312. The first connecting rod 1310 is connected to the fixed block 130, the second sliding block 1311 is connected to the first connecting rod 1310 and is slidably disposed on the track groove 12, one end of the second connecting rod 1312 is connected to the second sliding block 1311, and the other end is connected to the first sliding block 132.

[0049] Specifically, the second sliding block 1311 is slidably mounted on the track groove 12. One end of the first connecting rod 1310 is connected to the fixed block 130, and the other end is connected to the second sliding block 1311. One end of the second connecting rod 1312 is connected to the second sliding block 1311, and the other end is connected to the first sliding block 132. Through the coordinated cooperation of the two connecting rods and the two sliding blocks, the overall structural stability is ensured while the flexibility of movement is achieved. Furthermore, the modular design of the components makes it easy to replace without disassembling the overall structure, thus reducing maintenance costs.

[0050] In some implementation scenarios, the first connecting rod 1310 has first through holes (not shown) at both ends, the fixed block 130 has matching second through holes (not shown) on its side, and the second sliding block 1311 has matching third through holes (not shown) on its side. The top opening and closing structure 1 proposed in this application also includes multiple second fixing members 16. When the first through hole corresponds to the second through hole, the second fixing member 16 is inserted through the first through hole and the second through hole and tightened, the fixed block 130 is fixedly connected to the first connecting rod 1310. When the first through hole corresponds to the third through hole, the second fixing member 16 is inserted through the first through hole and the third through hole and tightened, the second sliding block 1311 is fixedly connected to the first connecting rod 1310. The installation is simple, the structure is simple, and it is not easily damaged during use, thereby reducing the cost of use.

[0051] In other implementation scenarios, the first link 1310 can be connected to the fixed block 130 and the second sliding block 1311 by welding or other methods, thereby improving the structural stability between the first link 1310, the fixed block 130 and the second sliding block 1311, without the need to add additional parts, thus saving material costs.

[0052] In some implementation scenarios, the second sliding block 1311 has a fourth through hole (not shown) on one side surface facing the first sliding block 132, and the first sliding block 132 has a fifth through hole (not shown). When one end of the second connecting rod 1312 passes through the fourth through hole and is tightened, and the other end of the second connecting rod 1312 passes through the fifth through hole and is tightened, the second connecting rod 1312 is connected to the first sliding block 132 and the second sliding block 1311. The installation is simple, the structure is simple, and it is not easily damaged during use, thereby reducing the cost of use.

[0053] In other implementation scenarios, the second link 1312 can be connected to the first sliding block 132 and the second sliding block 1311 by welding or other methods, thereby improving the structural stability between the second link 1312 and the first sliding block 132 and the second sliding block 1311, without the need to add additional parts, thus saving material costs.

[0054] In a specific implementation scenario, the first connecting rod 1310 is a fisheye connecting rod, with first through holes at both ends. The fixing block 130 is an angle iron plate, with matching second through holes on its side. The second fixing member 16 is a pin. After the pin is passed through the first and second through holes and tightened, it is fixed with a shaft elastic retaining ring. The angle iron plate is welded to the corresponding crossbeam door 11. The second sliding block 1311 is a connecting rod block, with matching third through holes on its side. After the pin is passed through the first and third through holes and tightened, it is fixed with a shaft elastic retaining ring. The first sliding block 132 is a nylon block. The side surface of the connecting rod block facing the nylon block is provided with a fourth through hole, which is a threaded hole. The two ends of the second connecting rod 1312 are provided with corresponding threads. The side of the nylon block is provided with a fifth through hole. One end of the second connecting rod 1312 is connected to the connecting rod block through the threaded hole, and the other end is passed through the fifth through hole and then tightened and fixed to the nylon block with a nut. Thus, under the mechanical movement of interaction, the connecting rod block, the second connecting rod 1312 and the nylon block can reciprocate on the track groove 12 following the opening and closing of the sliding door 14.

[0055] In the above scheme, when the machine tool needs to be loaded, before the operator opens the sliding door 14 to its maximum position, the opening and closing bracket 15 on the sliding door 14 hits the first sliding block 132 as the sliding door 14 opens, and pushes the first sliding block 132 to move together. The first sliding block 132, in turn, pulls the second sliding block 1311 and the first connecting rod 1310 through the second connecting rod 1312, opening the left and right doors of the crossbeam simultaneously, so that the workpiece to be processed can be directly placed on the worktable. After the machine tool completes the loading process, the operator... The sliding door 14 will be closed. At this time, the opening and closing bracket 15 on the sliding door 14 will hit the sides of the left and right doors of the crossbeam as the sliding door 14 closes. Under the pushing force of the opening and closing bracket 15, the left and right doors of the crossbeam will begin to close. When the sliding door 14 of the machine tool is completely closed, the left and right doors of the crossbeam will also be completely closed, thereby closing and sealing the loading area of ​​the machine tool. The machine tool forms a complete closed space, and the water inside the machine tool will not splash from the crossbeam 10 of the machine tool to the outside of the machine tool, reducing the water leakage rate of the machine tool.

[0056] It is understandable that, since the opening and closing bracket 15 will frequently impact the surface of the first sliding block 132, setting the first sliding block 132 to a smooth nylon block can enhance the wear resistance of the first sliding block 132 and reduce the cost of use. Furthermore, the top opening and closing structure 1 proposed in this application can be a purely mechanical motion structure, which is simpler, easier to install, has a lower failure rate, higher safety, and is more energy-efficient and environmentally friendly compared to the structure of a cylinder or electric cylinder.

[0057] Please see Figure 3 and Figure 4 , Figure 3This is a structural schematic diagram of one embodiment of the vertical machining center of this application. Figure 4 This is a top view schematic diagram of one embodiment of the vertical machining center of this application. The vertical machining center 2 includes the top opening / closing structure 1 and the machine tool body 20 as described in any of the above embodiments, with the top opening / closing structure 1 disposed on the machine tool body 20.

[0058] In some implementation scenarios, the machine tool body 20 includes a left tool magazine 200, a right tool magazine 201, and a worktable 202. The left tool magazine 200 and the right tool magazine 201 are both located on one side of the top opening structure 1, and the worktable 202 is located below the top opening structure 1 for placing the workpiece to be processed.

[0059] Specifically, the left tool magazine 200 and the right tool magazine 201 contain multiple tools with different functions, and different tools can be selected for machining according to the type of workpiece to be machined.

[0060] The above solution sets the top opening structure 1 on the machine tool body 20 of the vertical machining center 2. While ensuring that the machine tool crossbeam 10 is a high-strength and stable integrated structure, it solves the problems of water splashing on the machine tool and the inability to place the workpiece to be processed directly on the worktable 202 at one time, thereby improving the working efficiency and service life of the vertical machining center 2.

[0061] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A top-opening structure for a dual-tool magazine vertical machining center, characterized in that, include: A machine tool crossbeam is located on the top of the machine tool body and includes a protruding crossbeam and end crossbeams connected to both ends of the protruding crossbeam. A pair of crossbeam doors are located above the worktable of the machine tool body and are pivotally connected to the protruding crossbeams respectively; A pair of track grooves are respectively provided on the end crossbeam; A pair of sliding components are located above the machine tool crossbeam; wherein one end of the sliding component is fixedly connected to the crossbeam door on the same side, and the other end is slidably connected to the track groove on the same side; When the machine tool needs to process the workpiece, the sliding component slides on the track groove, causing the crossbeam door to rotate and open, so that the workpiece can be directly placed on the worktable. The top opening and closing structure further includes: A pair of sliding doors are slidably connected to the end crossbeam; A pair of opening and closing brackets, each of the opening and closing brackets being fixedly connected to the sliding door and located at one end near the machine tool crossbeam; When the sliding door and the beam door are fully closed, the center line of the sliding door and the center line of the beam door are coaxially arranged. When the sliding door is opened, the opening and closing bracket moves together with the sliding door and drives the sliding assembly to slide. The bottom surface of the opening and closing bracket is provided with at least one first hole, and the upper surface of the sliding door is provided with the same number of matching second holes at the positions corresponding to the first holes. The top opening and closing structure further includes: Multiple first fasteners; wherein, when the first hole corresponds one-to-one with the second hole, and the multiple first fasteners are inserted into the first hole and the second hole and tightened, the bottom surface of the opening and closing bracket abuts against the upper surface of the sliding door; The sliding component includes: A fixing block is fixed to the crossbeam door; The connecting component is connected to the fixing block; The first sliding block is slidably disposed on the track groove and connected to the connecting component; The connection component includes: The first connecting rod is connected to the fixed block; The second sliding block is connected to the first connecting rod and is slidably disposed on the track groove; The second link has one end connected to the second sliding block and the other end connected to the first sliding block; The beam door is pivotally connected to the protruding beam via a hinge, and the beam door has a symmetrical structure.

2. The top opening and closing structure according to claim 1, characterized in that, The first connecting rod has first through holes at both ends, the fixed block has a matching second through hole on its side, the second sliding block has a matching third through hole on its side, and the top opening and closing structure further includes: Multiple second fasteners; wherein, when the first through hole corresponds to the second through hole, and the second fastener is inserted through the first through hole and the second through hole and tightened, the fixing block is fixedly connected to the first connecting rod; when the first through hole corresponds to the third through hole, and the second fastener is inserted through the first through hole and the third through hole and tightened, the second sliding block is fixedly connected to the first connecting rod.

3. The top opening and closing structure according to claim 1, characterized in that, The second sliding block has a fourth through hole on one side surface facing the first sliding block, and the first sliding block has a fifth through hole on its side surface. When one end of the second connecting rod passes through the fourth through hole and is tightened, and the other end of the second connecting rod passes through the fifth through hole and is tightened, the second connecting rod is connected to the first sliding block and the second sliding block.

4. A vertical machining center, characterized in that, include: The top opening and closing structure according to any one of claims 1-3; Machine tool body; wherein the top opening and closing structure is disposed on the machine tool body.

5. The vertical machining center according to claim 4, characterized in that, The machine tool body includes: Both the left and right tool magazines are located on one side of the top opening structure; A workbench, located below the top opening structure, is used to place the workpiece to be processed.

Images