Top opening and closing structure for double-tool-magazine vertical machining center and vertical machining center

Abstract

The invention discloses a top opening and closing structure for a double-tool-magazine vertical machining center and the vertical machining center, and the top opening and closing structure comprises a machine tool cross beam which is arranged at the top of a machine tool body and comprises a convex cross beam and end cross beams connected with the two ends of the convex cross beam respectively; the pair of cross beam doors are arranged above the working table of the machine tool main body and are respectively pivoted with the convex cross beam; the rail grooves are formed in the end cross beams respectively; the sliding assemblies are located above the machine tool cross beam; one end of each sliding assembly is fixedly connected to the beam door on the same side, and the other end of each sliding assembly is slidably connected to the rail groove on the same side. When the machine tool needs to machine a to-be-machined workpiece, the sliding assembly slides on the rail groove to drive the cross beam door to rotate and be opened, so that the to-be-machined workpiece can be directly placed on the workbench. In this way, the working efficiency of the machine tool can be improved, and the service life of the machine tool can be prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical equipment, and in particular to a top opening and closing structure for a double-tool magazine vertical machining center and a vertical machining center. Background Art

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

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

[0004] In order to solve the above technical problems, the first aspect of the present application provides a top opening and closing structure for a double-tool magazine vertical machining center, including: a machine tool beam, arranged on the top of the machine tool body, including a convex beam and end beams respectively connected to the two ends of the convex beam; a pair of beam doors, arranged above the workbench of the machine tool body, and pivotally connected to the convex beams respectively; a pair of track grooves, respectively arranged on the end beams; a pair of sliding assemblies, located above the machine tool beam; wherein, one end of the sliding assembly is fixedly connected to the beam 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 the workpiece to be processed, the sliding assembly slides on the track groove, driving the beam door to rotate and open, so that the workpiece to be processed can be directly placed on the workbench.

[0005] Among them, the top opening and closing structure also includes: a pair of sliding doors, which are slidably connected to the end beams; a pair of opening and closing brackets, each of which is fixedly connected to the sliding door and located at one end close to the machine tool beam; wherein, 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, and when the sliding door is opened, the opening and closing bracket moves with the sliding door and drives the sliding assembly to slide.

[0006] In which, at least one first hole is provided on the bottom surface of the opening and closing bracket, and the same number of matching second holes are provided at the positions corresponding to the first holes on the upper surface of the sliding door, and the top opening and closing structure also includes: multiple first fixing members; in which, when the first holes correspond one-to-one with the second holes, the multiple first fixing members are passed through 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] Wherein, the sliding assembly includes: a fixed block fixed on the beam door; a connecting assembly connected to the fixed block; and a first sliding block slidably arranged on the track groove and connected to the connecting assembly.

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

[0009] In which, both ends of the first connecting rod are provided with first through holes, the side of the fixed block is provided with a matching second through hole, and the side of the second sliding block is provided with a matching third through hole, and the top opening and closing structure also includes: multiple second fixing parts; in which, when the first through hole corresponds to the second through hole, the second fixing part is passed through the first through hole and the second through hole and tightened, the fixed block is fixedly connected to the first connecting rod, and when the first through hole corresponds to the third through hole, the second fixing part is passed 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] A fourth through hole is provided on a surface of the second sliding block facing the first sliding block, and a fifth through hole is provided on a side surface of the first sliding block. When one end of the second connecting rod is passed through the fourth through hole and tightened, and the other end of the second connecting rod is passed through the fifth through hole and tightened, the second connecting rod is connected to the first sliding block and the second sliding block.

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

[0012] In order to solve the above technical problems, the second aspect of the present application provides a vertical machining center, including: the top opening and closing structure described in the first aspect above; a machine tool body; wherein the locking mechanism is arranged on the machine tool body.

[0013] The machine tool body includes: a left tool magazine and a right tool magazine, both of which are arranged on one side of the top opening and closing structure; and a workbench, which is arranged below the top opening and closing structure and is used to place workpieces to be processed.

[0014] The beneficial effect of the present application is: different from the prior art, in the top opening and closing structure proposed in the present application, when the machine tool needs to process the workpiece to be processed, the sliding component slides on the track groove, driving the beam door to rotate and open, so that the workpiece to be processed can be directly placed on the workbench of the machine tool body, without the need for the operator to manually load the material twice, greatly reducing the time required for the machine tool to clamp the workpiece to be processed, and the machine tool beam is still an integrated structure with good stability and high strength, thereby improving the working efficiency and service life of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following briefly introduces the drawings required for describing the embodiments. 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 inventive efforts. Among them: Figure 1 This is a structural diagram of an embodiment of the top opening and closing structure of a double-tool magazine vertical machining center of the present application; Figure 2 This is a structural diagram of an embodiment of the sliding assembly of the present application; Figure 3 It is a structural diagram of an embodiment of the vertical machining center of the present application; Figure 4 It is a top view schematic diagram of an embodiment of the vertical machining center of the present application. DETAILED DESCRIPTION

[0016] It should be noted that the terms "first" and "second" in this application are only used for descriptive purposes and should not be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0017] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0018] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0019] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0020] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0021] This application provides the following embodiments, and each embodiment is described in detail below.

[0022] See also Figure 1 , Figure 1The present invention is a schematic diagram of an embodiment of a top opening and closing structure for a dual-tool magazine vertical machining center 2. The top opening and closing structure 1 proposed in the present invention comprises: a machine tool crossbeam 10, disposed on the top of a machine tool body (not shown), comprising a protruding crossbeam 100 and end crossbeams 101 connected to both ends of the protruding crossbeam 100; a pair of crossbeam doors 11, disposed above the workbench of the machine tool body and pivotally connected to the protruding crossbeams 100; a pair of track grooves 12, each disposed on the end crossbeams 101; and a pair of sliding assemblies 13, located above the machine tool crossbeam 10. One end of the sliding assembly 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. When the machine tool needs to process a workpiece to be processed (not shown), the sliding assembly 13 slides on the track groove 12, driving the crossbeam door 11 to rotate open, allowing the workpiece to be directly placed on the workbench (not shown).

[0023] Specifically, the top opening and closing structure 1 is composed of multiple components, including a machine tool beam 10, a pair of beam doors 11, a pair of track grooves 12 and a pair of sliding assemblies 13, etc., wherein the machine tool beam 10 is in a "F" shape, including a convex beam 100 and end beams 101 respectively connected to the two ends of the convex beam 100, and the machine tool beam 10 is arranged on the top of the machine tool body, wherein the machine tool beam 10 corresponds to an axis.

[0024] Furthermore, a 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 protruding beam 100 respectively, and a 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 arranged on the end beam 101 on the side of the left door of the beam, and the right track groove is arranged on the end beam 101 on the side of the right door of the beam.

[0025] It can be understood that a pair of sliding assemblies 13 include a left sliding assembly and a right sliding assembly located on both sides of the axis, both of which are located above the machine tool beam 10, wherein one end of the left sliding assembly is fixedly connected to the left door of the beam, and the other end is slidably connected to the left track groove, and one end of the right sliding assembly is fixedly connected to the right door of the beam, and the other end is slidably connected to the right track groove. When the machine tool needs to process the workpiece to be processed, the sliding assembly 13 slides on the track groove 12, thereby driving the beam door 11 to rotate and open, so that the workpiece to be processed can be placed directly on the workbench.

[0026] It should be noted that the convex cross beam 100 includes a left vertical beam, a transverse beam and a right vertical beam connected in sequence, wherein the left cross beam door is pivotally connected to the left vertical beam, and the right cross beam door is pivotally connected to the right vertical beam.

[0027] It is understood that the left vertical beam is connected to the transverse beam at a certain angle, and the left vertical beam is connected to the end crossbeam 101 on the left door side of the crossbeam at a certain angle. The right vertical beam is connected to the transverse beam at a certain angle, and the right vertical beam is connected to the end crossbeam 101 on the right door side of the crossbeam at a certain angle. The angle at the connection is generally a right angle, but may be other angles in other specific implementation scenarios, and this application does not impose specific limitations on this.

[0028] In some implementation scenarios, the cross-shaped machine tool beam 10 is fixed to the top outer protective sheet metal of the machine tool body by screws.

[0029] In some implementation scenarios, the X-shaped machine tool crossbeam 10 is fixed to the top outer protective sheet metal of the machine tool body by welding.

[0030] In some implementation scenarios, the track groove 12 is fixed on the end cross beam 101 by welding.

[0031] In some implementation scenarios, the track groove 12 is fixed on the end cross beam 101 by screws.

[0032] In some implementation scenarios, the beam door 11 is pivotally connected to the protruding beam 100 via a hinge, and the beam door 11 has a symmetrical structure.

[0033] In some implementation scenarios, the sliding assembly 13 is an electric cylinder device. After the sliding assembly 13 is energized, the sliding assembly 13 slides on the track groove 12 through the rotation of the motor, thereby driving the beam door 11 to rotate and open.

[0034] In some implementation scenarios, the sliding component 13 is correspondingly provided with a mechanical pushing structure, and the mechanical pushing structure is provided with an opening and closing device. When the mechanical pushing structure moves, the opening and closing device on the mechanical pushing structure will push the sliding component 13, so that the sliding component 13 slides on the track groove 12, thereby driving the beam door 11 to rotate and open.

[0035] In the top opening and closing structure 1 proposed in the present application, when the machine tool needs to process the workpiece to be processed, the sliding component 13 slides on the track groove 12, driving the beam door 11 to rotate and open, so that the workpiece to be processed can be directly placed on the workbench of the machine tool body, without the need for the operator to manually load the material twice, which greatly reduces the time required for the machine tool to clamp the workpiece to be processed, and the machine tool beam 10 is still an integrated structure with good stability and high strength, thereby improving the working efficiency and service life of the machine tool.

[0036] 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, wherein the pair of sliding doors 14 are slidably connected to the end beam 101, and each opening and closing bracket 15 is fixedly connected to the sliding door 14 and is located at one end close to the machine tool beam 10; wherein, when the sliding door 14 and the beam door 11 are fully closed, the center line of the sliding door 14 and the center line of the beam door 11 are coaxially arranged, and when the sliding door 14 is opened, the opening and closing bracket 15 moves with the sliding door 14 and drives the sliding assembly 13 to slide.

[0037] Specifically, a pair of sliding doors 14 include a left sliding door and a right sliding door, both of which are slidably connected to the end beam 101 through a linear rail slider, and a pair of opening and closing brackets 15 include a left opening and closing bracket and a right opening and closing bracket, wherein 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, and the left opening and closing bracket and the right opening and closing bracket are both arranged at one end close to the machine tool beam 10. When the sliding door 14 is opened, the opening and closing bracket 15 opens together with the sliding door 14, and the door opening bracket drives the sliding assembly 13 to slide on the track groove 12, so that the beam door 11 can be driven to rotate and open through the sliding assembly 13, so that the workpiece to be processed can be placed directly on the workbench, thereby improving the working efficiency of the machine tool.

[0038] Furthermore, when the machine tool completes the loading process, the operator closes the sliding door 14, and the opening and closing bracket 15 closes together with the sliding door 14, and in the process of closing the door, the opening and closing bracket 15 will hit the side of the beam door 11 on the same side, so that under the thrust of the opening and closing bracket 15, the left beam door and the right beam door can close together. When the sliding door 14 of the machine tool is completely closed, the beam door 11 will also be completely closed, so that the entire loading area of ​​the machine tool is closed and sealed, and the machine tool forms a complete enclosed space. Therefore, when the machine tool uses the tools in the tool magazine to process the workpiece to be processed, the water in the machine tool will not splash from the machine tool beam 10 to the outside of the machine tool, thereby reducing the water leakage rate of the machine tool.

[0039] 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 a matching number of second holes (not shown in the figure) at positions corresponding to the first holes, and the top opening and closing structure 1 also includes a plurality of first fixing members (not shown in the figure); wherein, when the first holes correspond one-to-one with the second holes, and the plurality of first fixing members are passed through the first holes and the second holes and tightened, the bottom surface of the opening and closing bracket 15 abuts against the upper surface of the sliding door 14, which is easy to install, has a simple structure, and is not easily damaged during use, thereby reducing the cost of use.

[0040] Optionally, the number of the first holes is set according to actual conditions, and can be one, two, three, etc., and this application does not impose any specific restrictions here.

[0041] 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 methods, thereby improving the stability between the opening and closing bracket 15 and the sliding door 14, without adding additional components, saving material costs.

[0042] In some implementation scenarios, see Figure 2 , Figure 2 The figure is a schematic diagram of the structure of an embodiment of the sliding assembly 13 of the present application. The sliding assembly 13 includes a fixed block 130, a connecting assembly 131, and a first sliding block 132. The fixed block 130 is fixed to the beam door 11, the connecting assembly 131 is connected to the fixed block 130, and the first sliding block 132 is slidably disposed on the track groove 12 and connected to the connecting assembly 131.

[0043] Specifically, the fixed block 130 is fixed to the left beam door and the right beam door by welding, forming a rigid connection, which can effectively prevent loosening or displacement caused by machine tool vibration or external force, and ensure the reliability of the structure. The connecting component 131 is connected to the fixed block 130, and the first sliding block 132 is slidably set on the track groove 12 and connected to the connecting component 131, so that 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 beam door 11 to rotate and ensure the smoothness of the movement process.

[0044] In some implementation scenarios, please continue to refer to Figure 2 The connecting assembly 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.

[0045] Specifically, the second sliding block 1311 is slidably set 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 double connecting rod and the double sliding blocks, the flexibility of movement is achieved while ensuring the stability of the overall structure, and the modular design of the components is convenient for replacement without disassembling the overall structure, thereby reducing maintenance costs.

[0046] In some implementation scenarios, first through holes (not shown) are provided at both ends of the first connecting rod 1310, a matching second through hole (not shown) is provided on the side of the fixed block 130, and a matching third through hole (not shown) is provided on the side of the second sliding block 1311. The top opening and closing structure 1 proposed in this application also includes multiple second fixing members 16, wherein, when the first through hole corresponds to the second through hole, the second fixing member 16 is passed 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, and when the first through hole corresponds to the third through hole, the second fixing member 16 is passed 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. It is easy to install, has a simple structure, is not easily damaged during use, and thus reduces the cost of use.

[0047] In other implementation scenarios, the first connecting rod 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 connecting rod 1310 and the fixed block 130 and the second sliding block 1311, without adding additional components, saving material costs.

[0048] In some implementation scenarios, a fourth through hole (not shown) is provided on the side surface of the second sliding block 1311 facing the first sliding block 132, and a fifth through hole (not shown) is provided on the side of the first sliding block 132. When one end of the second connecting rod 1312 is passed through the fourth through hole and tightened, and the other end of the second connecting rod 1312 is passed through the fifth through hole and tightened, the second connecting rod 1312 is connected to the first sliding block 132 and the second sliding block 1311. It is easy to install, has a simple structure, and is not easily damaged during use, thereby reducing the cost of use.

[0049] In other implementation scenarios, the second connecting rod 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 connecting rod 1312 and the first sliding block 132 and the second sliding block 1311, without adding additional components, saving material costs.

[0050] In a specific implementation scenario, the first connecting rod 1310 is a fisheye connecting rod, and a first through hole is set at both ends of the fisheye connecting rod. The fixing block 130 is an angle iron plate, and a matching second through hole is set on the side of the angle iron plate. The second fixing member 16 is a latch, and the latch is passed through the first through hole and the second through hole respectively and tightened, and then fixed with an elastic retaining ring on the shaft. The angle iron plate is welded to the corresponding beam door 11. The second sliding block 1311 is a connecting rod block, and a matching third through hole is set on the side of the connecting rod block. After the latch is passed through the first through hole and the third through hole respectively and tightened, the latch is fixed with an elastic retaining ring on the shaft. Fixed, the first sliding block 132 is a nylon block, and a fourth through hole is provided on the surface of the connecting rod block facing the nylon block, and the fourth through hole is a threaded hole. Corresponding threads are provided at both ends of the second connecting rod 1312, and a fifth through hole is provided on the side of the nylon block. 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 fixedly connected to the nylon block by tightening a nut, so that under the interacting mechanical movement, the connecting rod block, the second connecting rod 1312 and the nylon block can make reciprocating motion on the track groove 12 following the sliding door 14 switch.

[0051] In the above scheme, when the machine tool needs to be loaded, the operator opens the sliding door 14 to the maximum position, and 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 will pull the second sliding block 1311 and the first connecting rod 1310 through the second connecting rod 1312 to open the left door and the right door of the beam synchronously, so that the workpiece to be processed can be directly placed on the workbench. When 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 hits the side of the left and right doors of the beam as the sliding door 14 closes. Under the thrust of the opening and closing bracket 15, the left and right doors of the beam begin to close. When the sliding door 14 of the machine tool is completely closed, the left and right doors of the beam will also be completely closed, thereby closing and sealing the loading area of ​​the machine tool. The machine tool forms a complete enclosed space, and the water in the machine tool will not splash from the machine tool beam 10 to the outside of the machine tool, thereby reducing the water leakage rate of the machine tool.

[0052] It is understandable that since the opening and closing bracket 15 will frequently collide with the surface of the first sliding block 132, setting the first sliding block 132 to a nylon block with a smooth surface can enhance the wear resistance of the first sliding block 132 and reduce the cost of use. In addition, the top opening and closing structure 1 proposed in this application can be a purely mechanical motion structure. Compared with the structure of a cylinder or an electric cylinder, it has a simpler structure, is more convenient to install, has a lower failure rate, is safer, and is more energy-saving and environmentally friendly.

[0053] See also Figure 3 and Figure 4 , Figure 3This is a structural diagram of an embodiment of the vertical machining center of the present application. Figure 4 1 is a top view of an embodiment of a vertical machining center of the present application, wherein the vertical machining center 2 comprises a top opening and closing structure 1 and a machine tool body 20 as described in any of the above embodiments, wherein the top opening and closing structure 1 is disposed on the machine tool body 20 .

[0054] In some implementation scenarios, the machine tool body 20 includes a left tool magazine 200, a right tool magazine 201 and a workbench 202, wherein the left tool magazine 200 and the right tool magazine 201 are both arranged on one side of the top opening and closing structure 1, and the workbench 202 is arranged below the top opening and closing structure 1 for placing the workpiece to be processed.

[0055] Specifically, a plurality of tools with different functions are placed in the left tool magazine 200 and the right tool magazine 201 , and different tools can be selected for processing according to the type of workpiece to be processed.

[0056] The above solution sets the top opening and closing structure 1 on the machine tool body 20 of the vertical machining center 2. While ensuring that the machine tool crossbeam 10 is an integrated structure with high strength and good stability, it solves the problems of water splashing from the machine tool and the inability to place the workpiece to be processed directly on the workbench 202 at one time, thereby improving the working efficiency and service life of the vertical machining center 2.

[0057] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A top opening and closing structure for a double-tool magazine vertical machining center, characterized in that: include: A machine tool crossbeam is provided on the top of the machine tool body and includes a convex crossbeam and end crossbeams respectively connected to both ends of the convex crossbeam; a pair of crossbeam doors, disposed above the workbench of the machine tool body and pivotally connected to the convex crossbeams respectively; a pair of track grooves, respectively provided on the end cross beams; A pair of sliding assemblies, located above the machine tool crossbeam; wherein one end of the sliding assembly 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 a workpiece to be processed, the sliding assembly slides on the track groove, driving the beam door to rotate and open, so that the workpiece to be processed can be directly placed on the workbench.

2. The top opening and closing structure according to claim 1, characterized in that: The top opening and closing structure further includes: a pair of sliding doors slidably connected to the end beams; a pair of opening and closing brackets, each of the opening and closing brackets being fixedly connected to the sliding door and located near one end of the machine tool beam; Among them, 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 with the sliding door and drives the sliding assembly to slide.

3. The top opening and closing structure according to claim 2, characterized in that: 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 a matching number of second holes at positions corresponding to the first holes. The top opening and closing structure further includes: Multiple first fixing members; wherein, when the first holes correspond to the second holes one by one, when the multiple first fixing members are passed through 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.

4. The top opening and closing structure according to claim 1, characterized in that: The sliding assembly comprises: a fixing block, fixed on the crossbeam door; a connecting assembly connected to the fixing block; The first sliding block is slidably disposed on the track groove and is connected to the connecting component.

5. The top opening and closing structure according to claim 4, characterized in that: The connection 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; A second connecting rod, one end of the second connecting rod is connected to the second sliding block, and the other end of the second connecting rod is connected to the first sliding block.

6. The top opening and closing structure according to claim 5, 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, and the second sliding block has a matching third through hole on its side. The top opening and closing structure further includes: Multiple second fixing parts; wherein, when the first through hole corresponds to the second through hole, the second fixing part is passed 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, the second fixing part is passed through the first through hole and the third through hole and tightened, the second sliding block is fixedly connected to the first connecting rod.

7. The top opening and closing structure according to claim 5, characterized in that: A fourth through hole is provided on the side surface of the second sliding block facing the first sliding block, and a fifth through hole is provided on the side surface of the first sliding block. When one end of the second connecting rod is passed through the fourth through hole and tightened, and the other end of the second connecting rod is passed through the fifth through hole and tightened, the second connecting rod is connected to the first sliding block and the second sliding block.

8. The top opening and closing structure according to claim 1, characterized in that: The beam door is pivotally connected to the convex beam through a hinge, and the beam door has a symmetrical structure.

9. A vertical machining center, characterized in that: include: The top opening and closing structure according to any one of claims 1 to 8; Machine tool body; wherein, the top opening and closing structure is arranged on the machine tool body.

10. The vertical machining center according to claim 9, characterized in that: The machine tool body comprises: The left tool magazine and the right tool magazine are both arranged on one side of the top opening and closing structure; The workbench is arranged below the top opening and closing structure and is used for placing the workpiece to be processed.

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