Guide rail self-lubricating device of numerical control gantry machining center

Abstract

The utility model relates to the technical field of gantry machine tools, and discloses a guide rail self-lubricating device of a numerical control gantry machining center, which comprises a cross beam and a sliding seat, a guide rail is arranged on the cross beam, the sliding seat is driven by the guide rail to transversely move, the guide rail comprises a threaded shaft, a plurality of rail bars and an oil pumping mechanism, and the sliding seat comprises a main body seat. A moving block and a plurality of sliding blocks are fixedly mounted on the back of the main body seat, the two ends of the threaded shaft are rotationally sleeved on the inner wall of the cross beam through two end barrel frames, the sliding blocks are slidably sleeved on the rail bars, the moving block is in threaded sleeve on the side wall of the threaded shaft, and an oil bin is formed in the cross beam; the oil pumping mechanism is arranged, the oil bin is arranged in the cross beam, displacement of the sliding seat can be used as power, lubrication stored in the oil bin is automatically pumped through the oil pumping mechanism and injected into an inner cavity of the moving block, the automatic lubrication effect between the moving block and the threaded shaft is achieved, and a manual oil coating mode is replaced; and the condition of non-uniform or untimely lubrication is avoided.

Description

Technical Field

[0001] This utility model relates to the field of gantry machining technology, and more specifically to a self-lubricating device for the guide rails of a CNC gantry machining center. Background Technology

[0002] A CNC gantry machining center is a high-precision, high-efficiency machining equipment that integrates mechanical manufacturing, CNC technology, automation control, and other multidisciplinary technologies. It has a large gantry structure and is usually composed of components such as bed, worktable, column, crossbeam, slide, and spindle box. It can realize multi-axis linkage machining. During the operation of the CNC gantry machining center, the guide rail, as a key moving component, is installed on the crossbeam, and its lubrication effect directly affects the machining accuracy, operational stability, and service life of the equipment.

[0003] Traditional CNC gantry machining centers primarily rely on manual application of grease to lubricate guideways. This manual application is not only labor-intensive but also makes it difficult to ensure uniform and timely lubrication. Insufficient lubrication can lead to increased wear on guideways, increased frictional resistance, and negatively impact machining accuracy and equipment operating efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a self-lubricating device for the guide rail of a CNC gantry machining center, so as to solve the problem that the lubrication of the guide rail of the traditional gantry machining center in the background art is difficult to guarantee the uniformity and timeliness of lubrication.

[0005] This utility model provides the following technical solution: a self-lubricating device for guide rails of a CNC gantry machining center, comprising a crossbeam and a slide block. A guide rail is provided on the crossbeam, and the slide block is driven to move laterally through the guide rail. The guide rail includes a threaded shaft, several rails, and an oil pumping mechanism. The slide block includes a main body, and a movable block and several sliders are fixedly installed on the back of the main body. The two ends of the threaded shaft are rotatably sleeved on the inner wall of the crossbeam through two end sleeves. Several sliders are slidably sleeved on several rails. The movable block is threadedly sleeved on the side wall of the threaded shaft. An oil tank is provided inside the crossbeam. The inner cavity of the movable block is connected to the inside of the oil tank through the oil pumping mechanism. The oil pumping mechanism is used to draw lubricating oil stored inside the oil tank and inject it into the inner cavity of the movable block. The lateral movement of the movable block drives the oil pumping mechanism to operate.

[0006] Furthermore, the top of the crossbeam is provided with an oil injection port that communicates with the interior of the oil tank.

[0007] Furthermore, the oil pumping mechanism includes a rotary column assembly, a moving gear, a rack, and a gear pump. The rotary column assembly is fixedly connected to the back of the moving block, the moving gear is fixedly connected to the inner wall of the crossbeam, the gear pump is connected to the rotary column assembly, and the rotary column assembly passes through the gear pump. The driving gear of the gear pump is fixedly connected to the side wall of the rotary column assembly. The rotation of the rotary column assembly drives the driving gear of the gear pump to rotate. The rack is connected to the side wall of the rotary column assembly and meshes with the moving gear. The inlet end of the gear pump is connected to a connecting hose through an inlet pipe. The connecting hose is connected to the inside of the oil tank. The outlet end of the gear pump is connected to the inner cavity of the moving block through an outlet pipe.

[0008] Furthermore, the rotating column assembly includes a main column and a fixed sleeve. The fixed sleeve is fixedly connected to the back of the moving block. The main column is rotatably sleeved within the inner cavity of the fixed sleeve. The rack is rotatably sleeved on the side wall of the main column. The side wall of the main column is connected to the inner wall of the fixed sleeve via a ratchet mechanism one, and to the inner wall of the rack via a ratchet mechanism two. The ratchet mechanism one and ratchet mechanism two have the same structure but opposite directions. The ratchet mechanism two is used to restrict the rack to rotate counterclockwise only along the side wall of the main column, and the ratchet mechanism one is used to restrict the main column to rotate clockwise only along the inner cavity of the fixed sleeve. The gear pump is fixedly connected to the back of the fixed sleeve and sleeved on the side wall of the main column. The driving gear of the gear pump is fixedly connected to the side wall of the main column.

[0009] Furthermore, the ratchet mechanism includes a disc housing, inside which a ratchet main component and several pawls are rotatably sleeved. The pawls engage with the ratchet teeth of the ratchet main component. The pawls are connected to the disc housing via a torsion spring. The main column penetrates the disc housing, and the ratchet main component is fixedly connected to the side wall of the main column. Several stops are provided on the inner wall of the disc housing, which are used to restrict the pawls from rotating only to one side.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] When the CNC gantry machining center is running, the guide rail drives the sliding seat to move, which in turn moves the spindle box. During the process, the sliding seat moves through the threaded engagement of the threaded shaft and the moving block. By setting up an oil pump mechanism and an oil tank inside the crossbeam, the sliding seat movement can be used as the power source. The oil pump mechanism automatically draws the lubricant stored in the oil tank and injects it into the inner cavity of the moving block, achieving automatic lubrication between the moving block and the threaded shaft. This replaces the manual oiling method and avoids uneven or untimely lubrication. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This utility model Figure 1Schematic diagram of the slide block and guide rail structure;

[0014] Figure 3 This utility model Figure 2 A schematic diagram of the pump mechanism in the middle;

[0015] Figure 4 This utility model Figure 3 A schematic diagram of the spiral column assembly structure in the diagram;

[0016] Figure 5 This utility model Figure 4 A schematic diagram of the ratchet mechanism in the image.

[0017] The attached diagram is labeled as follows: 1. Crossbeam; 2. Slide block; 3. Threaded shaft; 4. Rail; 5. Oil pumping mechanism; 21. Main body seat; 22. Moving block; 23. Sliding block; 31. End cylinder frame; 51. Rotary column assembly; 52. Moving gear; 53. Rack; 54. Gear pump; 55. Inlet pipe; 56. Connecting hose; 57. Outlet pipe; 511. Main column; 512. Fixed sleeve; 513. Ratchet mechanism one; 514. Ratchet mechanism two; 515. Disc; 516. Ratchet main component; 517. Pad; 518. Torsion spring; 11. Oil tank. Detailed Implementation

[0018] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] Reference Figure 1 and Figure 2 This utility model provides a self-lubricating device for the guide rail of a CNC gantry machining center, including a crossbeam 1 and a slide 2. The crossbeam 1 is provided with a guide rail, and the slide 2 is driven to move laterally through the guide rail. The guide rail includes a threaded shaft 3, several rails 4, and an oil pumping mechanism 5. The slide 2 includes a main body 21, and a movable block 22 and several sliders 23 are fixedly installed on the back of the main body 21. The two ends of the threaded shaft 3 are rotatably sleeved on the inner wall of the crossbeam 1 through two end sleeves 31. Several sliders 23 are slidably sleeved on several rails 4. The movable block 22 is threadedly sleeved on the side wall of the threaded shaft 3. An oil tank 11 is opened in the crossbeam 1. The inner cavity of the movable block 22 is connected to the inside of the oil tank 11 through the oil pumping mechanism 5. The oil pumping mechanism 5 is used to draw the lubricating oil stored in the oil tank 11 and inject it into the inner cavity of the movable block 22. The lateral movement of the movable block 22 drives the oil pumping mechanism 5 to run.

[0020] When the CNC gantry machining center is running, the rotation of the threaded shaft 3 and the threaded engagement of the moving block 22 can cause the moving block 22 to move, thereby driving the slide block 2 to move laterally. When the moving block 22 moves, it drives the oil pump mechanism 5 to run, thereby drawing the lubricating oil stored in the oil tank 11 and injecting it into the inner cavity of the moving block 22. This achieves automatic oiling and lubrication between the moving block 22 and the threaded shaft 3. As the moving block 22 moves along the axis of the threaded shaft 3, the lubricating oil can be spread on the entire threaded shaft 3 to achieve a uniform oiling effect.

[0021] Reference Figure 2 The top of the crossbeam 1 is provided with an oil injection port that communicates with the interior of the oil tank 11.

[0022] This setting allows for convenient oiling via the oil inlet at the top of beam 1.

[0023] Reference Figure 3 The oil pumping mechanism 5 includes a rotary column assembly 51, a moving gear 52, a rack 53, and a gear pump 54. The rotary column assembly 51 is fixedly connected to the back of the moving block 22. The moving gear 52 is fixedly connected to the inner wall of the crossbeam 1. The gear pump 54 is connected to the rotary column assembly 51, and the rotary column assembly 51 passes through the gear pump 54. The drive gear of the gear pump 54 is fixedly connected to the side wall of the rotary column assembly 51. The rotation of the rotary column assembly 51 drives the drive gear of the gear pump 54 to rotate. The rack 53 is connected to the side wall of the rotary column assembly 51 and meshes with the moving gear 52. The inlet end of the gear pump 54 is connected to a connecting hose 56 through an inlet pipe 55. The connecting hose 56 is connected to the inside of the oil tank 11. The outlet end of the gear pump 54 is connected to the inner cavity of the moving block 22 through an outlet pipe 57.

[0024] When the moving block 22 moves laterally, it drives the rotating column assembly 51 to move laterally as well. Through the meshing relationship between the rack 53 and the moving gear 52, the rack 53 can rotate, which in turn drives the rotating column assembly 51 to rotate as it moves laterally. When the rotating column assembly 51 rotates, it drives the gear pump 54 to operate and pump liquid. With the connection of the connecting hose 56, the lubricating oil stored inside the oil tank 11 can be drawn out. The lubricating oil flows into the moving block 22 through the liquid outlet pipe 57 to achieve the effect of applying lubricating oil.

[0025] Reference Figure 4The rotating column assembly 51 includes a main column 511 and a fixed sleeve 512. The fixed sleeve 512 is fixedly connected to the back of the moving block 22. The main column 511 is rotatably sleeved in the inner cavity of the fixed sleeve 512. The rack 53 is rotatably sleeved in the side wall of the main column 511. The side wall of the main column 511 is connected to the inner wall of the fixed sleeve 512 through a ratchet mechanism 1 513. The side wall of the main column 511 is connected to the inner wall of the rack 53 through a ratchet mechanism 2 514. The ratchet mechanism 1 513 and the ratchet mechanism 2 514 have the same structure but opposite directions. The ratchet mechanism 2 514 is used to restrict the rack 53 to rotate counterclockwise only along the side wall of the main column 511. The ratchet mechanism 1 513 is used to restrict the main column 511 to rotate clockwise only along the inner cavity of the fixed sleeve 512. The gear pump 54 is fixedly connected to the back of the fixed sleeve 512. The gear pump 54 is sleeved in the side wall of the main column 511. The drive gear of the gear pump 54 is fixedly connected to the side wall of the main column 511.

[0026] When the moving block 22 moves in one direction and causes the rack 53 to rotate clockwise, the ratchet mechanism 2 514 restricts the rack 53 to rotate counterclockwise only along the side wall of the main column 511. At this time, the ratchet mechanism 1 513 can drive the main column 511 to rotate, thereby making the gear pump 54 run. When the moving block 22 moves laterally in another direction, the rack 53 rotates counterclockwise, and the ratchet mechanism 1 513 restricts the ratchet mechanism 1 513 to rotate clockwise only along the inner cavity of the fixed sleeve 512. At this time, the main column 511 cannot follow the rack 53 to rotate counterclockwise, and the gear pump 54 does not run. This setting can avoid the gear pump 54 from running in reverse and improve the service life of the gear pump 54.

[0027] Reference Figure 5 The ratchet mechanism 513 includes a disc housing 515. Inside the disc housing 515, a ratchet main component 516 and several pawls 517 are rotatably sleeved. The pawls 517 engage with the ratchet teeth of the ratchet main component 516. The pawls 517 are connected to the disc housing 515 via a torsion spring 518. A main column 511 passes through the disc housing 515, and the ratchet main component 516 is fixedly connected to the side wall of the main column 511. Several stops are provided on the inner wall of the disc housing 515, which are used to restrict the pawls 517 from rotating to one side only.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. This utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A guide rail self-lubricating device of a numerical control gantry machining center, comprising a beam (1) and a sliding seat (2), the beam (1) is provided with a guide rail, the sliding seat (2) is driven to move laterally by the guide rail, characterized in that: The guide rail comprises a threaded shaft (3), a plurality of rails (4) and a pump oil mechanism (5), the sliding base (2) comprises a main body seat (21), the back of the main body seat (21) is fixedly connected with a moving block (22) and a plurality of sliding blocks (23), the threaded shaft (3) is rotatably sleeved on the inner wall of the cross beam (1) through two end cylinder frames (31) at both ends, the plurality of sliding blocks (23) are slidably sleeved on the rails (4), the moving block (22) is threadedly sleeved on the side wall of the threaded shaft (3), the cross beam (1) is internally provided with an oil tank (11), the inner cavity of the moving block (22) is communicated with the inside of the oil tank (11) through the pump oil mechanism (5), the pump oil mechanism (5) is used for extracting the lubricating oil stored in the oil tank (11) and injecting into the inner cavity of the moving block (22), and the moving block (22) drives the pump oil mechanism (5) to run through horizontal movement.

2. The self-lubricating device for the guide rail of a CNC gantry machining center according to claim 1, characterized in that: The top of the cross beam (1) is provided with an oil inlet opening in communication with the inside of the oil tank (11).

3. The self-lubricating device for the guide rail of a CNC gantry machining center according to claim 1, characterized in that: The pump oil mechanism (5) comprises a rotating column assembly (51), a moving gear (52), a rack (53) and a gear pump (54), the rotating column assembly (51) is fixedly connected to the back of the moving block (22), the moving gear (52) is fixedly connected to the inner wall of the cross beam (1), the gear pump (54) is in butt joint with the rotating column assembly (51), the rotating column assembly (51) penetrates through the gear pump (54), the driving gear of the gear pump (54) is fixedly connected to the side wall of the rotating column assembly (51), the rotating column assembly (51) is rotated to drive the driving gear of the gear pump (54) to rotate, the rack (53) is in butt joint with the side wall of the rotating column assembly (51), the rack (53) is in mesh with the moving gear (52), the gear pump (54) is communicated with a connecting hose (56) through a liquid inlet pipe (55) at the liquid inlet end, the connecting hose (56) is in communication with the inside of the oil tank (11), and the inner cavity of the moving block (22) is communicated with the gear pump (54) at the liquid outlet end through a liquid outlet pipe (57).

4. The self-lubricating device for the guide rail of a CNC gantry machining center according to claim 3, characterized in that: The rotating column assembly (51) comprises a main body column (511) and a fixed cylinder sleeve (512), the fixed cylinder sleeve (512) is fixedly connected to the back of the moving block (22), the main body column (511) is rotatably sleeved in the inner cavity of the fixed cylinder sleeve (512), the rack (53) is rotatably sleeved on the side wall of the main body column (511), the side wall of the main body column (511) is connected with the inner wall of the fixed cylinder sleeve (512) through a ratchet mechanism one (513), the side wall of the main body column (511) is connected with the inner wall of the rack (53) through a ratchet mechanism two (514), the ratchet mechanism one (513) and the ratchet mechanism two (514) are the same in structure and opposite in direction, the ratchet mechanism two (514) is used for limiting the rack (53) to rotate counterclockwise only along the side wall of the main body column (511), the ratchet mechanism one (513) is used for limiting the main body column (511) to rotate clockwise only along the inner cavity of the fixed cylinder sleeve (512), the gear pump (54) is fixedly connected to the back of the fixed cylinder sleeve (512), the gear pump (54) is sleeved on the side wall of the main body column (511), and the driving gear of the gear pump (54) is fixedly connected to the side wall of 5. A self-lubricating device for the guide ways of a CNC gantry machining center according to claim 4, characterized in that: The ratchet mechanism one (513) includes a disc shell (515), the disc shell (515) is rotatably sleeved with a ratchet main part (516) and a plurality of pawls (517), a plurality of the pawls (517) are engaged with the ratchet teeth of the ratchet main part (516), the pawls (517) are drivingly connected with the disc shell (515) through a torsion spring (518), the main body column (511) penetrates the disc shell (515), and the ratchet main part (516) is fixedly connected on the side wall of the main body column (511), a plurality of the stoppers are arranged on the inner wall of the disc shell (515), and the stoppers are used for limiting the plurality of pawls (517) to turn over only on one side.

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