Transmission structure of gantry numerical control machining center

Abstract

The utility model discloses a transmission structure of gantry numerical control machining center, including frame, dustproof mechanism and lubricating mechanism, the upper end front side fixed connection of frame has the fixed frame, and the left and right ends of fixed frame are rotatably connected with the ball screw, and the front side of frame is fixedly connected with the guide rail no.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, specifically to a transmission structure for a gantry CNC machining center. Background Technology

[0002] A gantry CNC machining center is a large, high-precision CNC machine tool. Its main structure adopts a gantry layout (with columns supporting the top beam on both sides), and the worktable is typically a floor-standing or mobile platform design, featuring an ultra-long machining stroke and strong load-bearing capacity. Its core advantage lies in its ability to efficiently process ultra-large, heavy, or complex geometrically shaped workpieces, such as aerospace structural components, energy equipment bases, ship parts, and large molds. It is a core piece of equipment in heavy industry and high-end equipment manufacturing. Modern models also integrate intelligent modules, such as online monitoring, adaptive control, and IoT interfaces, driving the automation and flexibility of large parts processing.

[0003] In existing gantry CNC machining centers, the transmission typically uses a combination of ball screws and guide rails. To protect the ball screws, bellows covers are used, with both the ball screws and guide rails located inside the bellows covers. The bellows covers extend and retract with the movement of the Z-axis transmission mechanism to provide protection. However, the surface of the bellows covers is often made of canvas, which can be scratched by hot metal shavings, affecting the protective effect and making it difficult for the heat generated by the ball screws to dissipate. In addition, the ball screws require lubrication and maintenance, and since they are located inside the bellows covers, maintenance is also relatively inconvenient. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a transmission structure for a gantry CNC machining center. By using a roller shutter-type protective cover, the protective effect is improved, and the lubrication of the ball screw is facilitated, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a transmission structure for a gantry CNC machining center, comprising a frame, a dustproof mechanism, and a lubrication mechanism; A fixed frame is fixedly connected to the upper front side of the frame. A ball screw is rotatably connected between the left and right ends of the fixed frame. A guide rail is fixedly connected to the front side of the frame. Both the ball screw and the guide rail are located inside the fixed frame. A mounting bracket is fixedly connected between the nut of the ball screw and the front side of the slider of the guide rail. The dustproof mechanism includes a fixed plate, a cover, and a curtain roller track. The fixed plates are symmetrically fixed to the upper and lower sides of the fixed frame. A cover is fixedly connected between adjacent left and right fixed plates. A curtain roller track is fixedly connected to the inner walls of the upper and lower sides of the fixed frame. A connecting seat is fixedly connected to the left and right sides of the mounting frame. A roller is rotatably connected between the inner walls of the upper and lower sides of the cover. A roller slat is fixedly connected between the connecting seat and the roller on the same side. The roller slat is slidably connected between the two curtain roller tracks. The lubrication mechanism is located in the middle of the connecting seat, and the ball screw is configured to cooperate with the lubrication mechanism.

[0006] Furthermore, the dustproof mechanism also includes rubber plates, which are fixedly connected to the opposite inner sides of the two covers, and the lower ends of the rubber plates are slidably connected to the front sides of the adjacent roller shutters to prevent dust from entering from the covers.

[0007] Furthermore, the dustproof mechanism also includes fan covers, which are uniformly fixedly connected to the left and right sides of the upper surface of the fixed frame. Axial flow fans are fixedly connected to the outside of the ventilation openings on the left and right sides of the upper surface of the fixed frame. The axial flow fans are located inside the adjacent fan covers. Filter screens are fixedly connected to the upper end of each fan cover. The input end of each axial flow fan is electrically connected to the output end of the control console of the gantry CNC machining center to achieve heat dissipation inside the fixed frame.

[0008] Furthermore, the lubrication mechanism includes a base plate, a lubrication cover, an oil can seat, a connecting seat, an oil can, and a hose. The base plate is respectively located in the middle of the rear side of the connecting seat. Lubrication covers are fixedly connected to the opposite outer sides of the two base plates. Oil can seats are fixedly connected to the left and right sides of the fixing frame. A connecting seat is fixedly connected to the middle of the oil can seat. An oil can is threaded to the lower end of the connecting seat. The connecting seat is connected to the adjacent rear lubrication cover through a hose. An oil-absorbing rope is threaded through the inside of the hose to achieve lubrication of the ball screw.

[0009] Furthermore, the lubrication cover is a bowl-shaped lubrication cover, with through holes in the middle of the bottom wall of the lubrication cover. The ball screw passes through the through holes in the middle of the two lubrication covers to collect excess lubricating oil.

[0010] Furthermore, a motor is fixedly connected to the right side of the fixed frame, the output shaft of the motor is fixedly connected to the right end of the ball screw, and the input end of the motor is electrically connected to the output end of the control console of the gantry CNC machining center, driving the ball screw to rotate.

[0011] Furthermore, a second guide rail is fixedly connected to the upper surface of the frame, and a second slider of the second guide rail is fixedly connected to the upper end of the mounting frame to limit the upper end of the mounting frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The use of roller shutters to prevent dust from entering the ball screw is more robust and less prone to damage compared to bellows covers. Furthermore, the axial flow fans on both sides allow for air circulation inside the mounting bracket, providing heat dissipation for the ball screw and guide rails, and making the displacement of the mounting bracket more stable. 2. The oil-absorbing rope inside the hose delivers the lubricating oil from the oil can to the upper end of the ball screw through capillary action. The lubricating oil drips from the rear end of the oil-absorbing rope to lubricate the ball screw. When the lubricating oil in the oil can is used up, simply unscrew the oil can and refill it, making lubrication and maintenance more convenient. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an enlarged structural diagram of point A in this utility model; Figure 4 This is a cross-sectional structural diagram of the cover of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the lubrication cover of this utility model.

[0014] In the diagram: 1. Frame, 2. Fixing frame, 3. Ball screw, 4. Guide rail one, 5. Mounting bracket, 6. Motor, 7. Dustproof mechanism, 71. Fixing plate, 72. Cover, 73. Rubber plate, 74. Fan cover, 75. Curtain roller track, 8. Lubrication mechanism, 81. Base plate, 82. Lubrication cover, 83. Oil can holder, 84. Connecting seat, 85. Oil can, 86. Hose, 9. Guide rail two, 10. Roller, 11. Axial flow fan, 12. Connecting seat. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This embodiment provides a technical solution: a transmission structure for a gantry CNC machining center, including a frame 1, a dustproof mechanism 7, and a lubrication mechanism 8.

[0017] The frame 1 is fixedly connected to the upper front side of the frame 2. The left and right ends of the fixed frame 2 are rotatably connected to the ball screw 3. The front side of the frame 1 is fixedly connected to the guide rail 4. The ball screw 3 and the guide rail 4 are both located inside the fixed frame 2. The nut of the ball screw 3 and the front side of the slider of the guide rail 4 are fixedly connected to the mounting bracket 5. The right side of the fixed frame 2 is fixedly connected to the motor 6. The output shaft of the motor 6 is fixedly connected to the right end of the ball screw 3. The input end of the motor 6 is electrically connected to the output end of the control console of the gantry CNC machining center. The upper surface of the frame 1 is fixedly connected to the guide rail 2. The slider of the guide rail 2 is fixedly connected to the upper end of the mounting bracket 5.

[0018] The dustproof mechanism 7 includes a fixing plate 71, a cover 72, and a curtain roller track 75. The fixing plates 71 are symmetrically fixed to the upper and lower sides of the fixing frame 2. A cover 72 is fixedly connected between adjacent fixing plates 71. Curtain roller tracks 75 are fixedly connected to the inner walls of the upper and lower sides of the fixing frame 2. Connecting seats 12 are fixedly connected to the left and right sides of the mounting frame 5. A roller shaft 10 is rotatably connected between the inner walls of the upper and lower sides of the cover 72. A curtain slat is fixedly connected between the connecting seat 12 and the roller shaft 10 on the same side. The curtain slats are slidably connected between the two curtain roller tracks 75. The dustproof mechanism 7 also includes... The dustproof mechanism 7 includes rubber plates 73, which are fixedly connected to the opposite inner sides of the two covers 72. The lower ends of the rubber plates 73 are slidably connected to the front sides of the adjacent roller shutters. The dustproof mechanism 7 also includes fan covers 74, which are evenly fixedly connected to the left and right sides of the upper surface of the fixed frame 2. Axial flow fans 11 are fixedly connected to the outside of the ventilation openings on the left and right sides of the upper surface of the fixed frame 2. The axial flow fans 11 are located inside the adjacent fan covers 74. The upper ends of the fan covers 74 are fixedly connected to the filters. The input ends of the axial flow fans 11 are electrically connected to the output ends of the control console of the gantry CNC machining center.

[0019] The lubrication mechanism 8 is located in the middle of the connecting seat 12, and the ball screw 3 is configured to cooperate with the lubrication mechanism 8. The lubrication mechanism 8 includes a base plate 81, a lubrication cover 82, an oil can seat 83, a connecting seat 84, an oil can 85, and a hose 86. The base plate 81 is located in the middle of the rear side of the connecting seat 12. The lubrication cover 82 is fixedly connected to the opposite outer sides of the two base plates 81. The oil can seat 83 is fixedly connected to both the left and right sides of the fixing frame 2. The connecting seat 84 is fixedly connected to the middle of the oil can seat 83. The lower end of the connecting seat 84 is fixedly connected to the connecting seat 85. The oil can 85 is threadedly connected to the connecting seat 84 and the adjacent lubrication cover 82 on the rear side, which are connected by a hose 86. An oil-absorbing rope is threaded inside the hose 86. The lubrication cover 82 is a bowl-shaped lubrication cover, and the bottom wall of the lubrication cover 82 has a through hole in the middle. The ball screw 3 passes through the through hole in the middle of the two lubrication covers 82. The oil-absorbing rope inside the hose 86 draws out the lubricating oil from the oil can 85 through the capillary principle. The oil-absorbing rope is made of cotton thread. After the rear end of the oil-absorbing rope accumulates too much lubricating oil, the lubricating oil drips onto the ball screw 3 to lubricate the ball screw 3.

[0020] The working principle of this utility model is as follows: The Z-axis transmission mechanism is installed inside the mounting bracket 5, and position sensors and other sensors are installed to detect the displacement changes of the Y-axis and Z-axis of the transmission structure of this gantry CNC machining center. During operation, the output shaft of motor 6 rotates, the ball screw 3 rotates, and the nut of ball screw 3 drives the mounting bracket 5 to slide between guide rail 2 9 and guide rail 1 4. Guide rail 2 9 is located on the upper surface of frame 1, which limits the upper end of mounting bracket 5, making the displacement of mounting bracket 5 more stable. When the mounting bracket 5 moves to the left, the left roller shutter slat is pushed by the mounting bracket 5 and retracts into the left cover 72. At the same time, the right roller shutter slat is pulled out from the right cover 72, thus protecting the inside of the fixing bracket 2. The lower end of the rubber plate 73 is slidably connected to the front side of the adjacent roller shutter slats to reduce dust entering from the cover 72. Meanwhile, the left axial fan 11 is installed in the opposite direction to the right axial fan 11. The right axial fan 11 supplies outside air, and the left axial fan 11 supplies out the air inside the fixing bracket 2, thus realizing the exchange of air inside and outside the fixing bracket 2 and dissipating heat from the ball screw 3 and the guide rail 4. The oil-absorbing rope inside the hose 86 draws out the lubricating oil from the oil can 85 through capillary action. The oil-absorbing rope is made of cotton thread. After excess lubricating oil accumulates at the rear end of the oil-absorbing rope, the lubricating oil drips onto the ball screw 3 to lubricate the ball screw 3. The lubrication cover 82 is a bowl-shaped lubrication cover that collects the excess lubricating oil dripping from the ball screw 3 to reduce waste. When the lubricating oil in the oil can 85 is used up, the oil can 85 can be unscrewed, refilled, and then screwed back on.

[0021] It is worth noting that the motor 6 disclosed in the above embodiments can be a 1GG6186-0NC40-1VV3-Z DC motor, and the axial flow fan 11 can be freely configured according to the actual application scenario. The control of the motor 6 and the axial flow fan 11 by the gantry CNC machining center console adopts the methods commonly used in the prior art.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A transmission structure for a gantry CNC machining center, characterized in that: Includes a frame (1), a dustproof mechanism (7), and a lubrication mechanism (8); A fixed frame (2) is fixedly connected to the upper front side of the frame (1). A ball screw (3) is rotatably connected between the left and right ends of the fixed frame (2). A guide rail (4) is fixedly connected to the front side of the frame (1). The ball screw (3) and the guide rail (4) are both located inside the fixed frame (2). A mounting bracket (5) is fixedly connected between the nut of the ball screw (3) and the front side of the slider of the guide rail (4). The dustproof mechanism (7) includes a fixed plate (71), a cover (72) and a curtain roller track (75). The fixed plates (71) are symmetrically fixed to the upper and lower sides of the fixed frame (2). The cover (72) is fixedly connected between the left and right adjacent fixed plates (71). The curtain roller track (75) is fixedly connected to the inner walls of the upper and lower sides of the fixed frame (2). The left and right sides of the mounting frame (5) are fixedly connected to the connecting seat (12). The inner walls of the upper and lower sides of the cover (72) are rotatably connected to the roller (10). The connecting seat (12) and the roller (10) on the same side are fixedly connected to the curtain slats. The curtain slats are slidably connected between the two curtain roller tracks (75). The lubrication mechanism (8) is respectively located in the middle of the connecting seat (12), and the ball screw (3) is configured in conjunction with the lubrication mechanism (8).

2. The transmission structure of a gantry CNC machining center according to claim 1, characterized in that: The dustproof mechanism (7) also includes a rubber plate (73), which is fixedly connected to the opposite inner sides of the two covers (72), and the lower end of the rubber plate (73) is slidably connected to the front side of the adjacent roller shutter.

3. The transmission structure of a gantry CNC machining center according to claim 1, characterized in that: The dustproof mechanism (7) also includes a fan cover (74), which is uniformly fixedly connected to the left and right sides of the upper surface of the fixed frame (2). An axial flow fan (11) is fixedly connected to the outside of the ventilation openings on the left and right sides of the upper surface of the fixed frame (2). The axial flow fan (11) is located inside the adjacent fan cover (74). A filter screen is fixedly connected to the upper end of the fan cover (74). The input end of the axial flow fan (11) is electrically connected to the output end of the control console of the gantry CNC machining center.

4. The transmission structure of a gantry CNC machining center according to claim 1, characterized in that: The lubrication mechanism (8) includes a base plate (81), a lubrication cover (82), an oil can seat (83), a connecting seat (84), an oil can (85), and a hose (86). The base plate (81) is respectively located in the middle of the rear side of the connecting seat (12). The two base plates (81) are fixedly connected to the opposite outer sides of each other with a lubrication cover (82). The left and right sides of the fixing frame (2) are fixedly connected with oil can seats (83). The middle of the oil can seat (83) is fixedly connected with a connecting seat (84). The lower end of the connecting seat (84) is threaded with an oil can (85). The connecting seat (84) is connected to the adjacent rear lubrication cover (82) through a hose (86). An oil-absorbing rope is threaded through the inside of the hose (86).

5. The transmission structure of a gantry CNC machining center according to claim 4, characterized in that: The lubrication cover (82) is a bowl-shaped lubrication cover. The bottom wall of the lubrication cover (82) has through holes in the middle. The ball screw (3) passes through the through holes in the middle of the two lubrication covers (82).

6. The transmission structure of a gantry CNC machining center according to claim 1, characterized in that: A motor (6) is fixedly connected to the right side of the fixed frame (2). The output shaft of the motor (6) is fixedly connected to the right end of the ball screw (3). The input end of the motor (6) is electrically connected to the output end of the control console of the gantry CNC machining center.

7. The transmission structure of a gantry CNC machining center according to claim 1, characterized in that: The upper surface of the frame (1) is fixedly connected to the second guide rail (9), and the second slider of the second guide rail (9) is fixedly connected to the upper end of the mounting frame (5).

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