Numerical control gantry machining center beam guide rail structure

Abstract

The utility model relates to numerical control gantry machining center technical field, and disclose a kind of numerical control gantry machining center crossbeam guide rail structure, including connecting base plate, the bottom left and right sides of connecting base plate are evenly provided with connecting shaft, the bottom of left connecting shaft is provided with the guide rail assembly with one end and right side connecting shaft bottom fixed connection, the bottom of connecting base plate is provided with the rotating shaft with guide rail assembly top fixed connection, the outside of rotating shaft is provided with first bevel gear.The numerical control gantry machining center crossbeam guide rail structure, by setting guide rail assembly, when needing to disassemble and replace ball screw, first, limit nut is spun from limit bolt, then limit bolt is spun from U-shaped seat, finally, ball screw is pulled to drive connecting block to move out from U-shaped seat, to realize the purpose of being convenient for disassembling and replacing screw rod, improve the practicality of structure, facilitate staff use.

Description

Technical Field

[0001] This utility model relates to the technical field of CNC gantry machining centers, specifically to a crossbeam guide rail structure for a CNC gantry machining center. Background Technology

[0002] A CNC gantry machining center is a machining center in which the spindle axis is set perpendicular to the worktable. It is mainly suitable for machining large parts. It is equipped with a crossbeam guide rail structure, and the crossbeam guide rail structure drives the moving seat to move horizontally through the lead screw.

[0003] The lead screws on existing beam guide rail structures are mostly fixed to the output shaft of the motor by welding, which is inconvenient to disassemble and replace, affecting the use of the structure. Secondly, the existing beam guide rail structure has a fixed position and cannot be adjusted according to the usage requirements. Therefore, a new beam guide rail structure for CNC gantry machining centers is proposed to solve the above-mentioned technical problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a crossbeam guide rail structure for a CNC gantry machining center. This structure offers advantages such as easy disassembly and replacement of the lead screw, and adjustment of the crossbeam guide rail's orientation according to usage requirements. It solves the problems of existing crossbeam guide rail structures where the lead screw is mostly welded to the motor's output shaft, making disassembly and replacement inconvenient and affecting the structure's usability. Furthermore, existing crossbeam guide rail structures have a fixed orientation and cannot be adjusted according to usage requirements.

[0006] (II) Technical Solution

[0007] To facilitate the disassembly and replacement of the lead screw and allow for adjustment of the beam guide rail's orientation according to usage requirements, this utility model provides the following technical solution: A beam guide rail structure for a CNC gantry machining center, comprising a connecting base plate, connecting shafts on both the left and right sides of the bottom of the connecting base plate, a guide rail assembly with one end fixedly connected to the bottom of the right connecting shaft at the bottom of the left connecting shaft, a rotating shaft fixedly connected to the top of the guide rail assembly at the bottom of the connecting base plate, a first bevel gear on the outside of the rotating shaft, a second stepper motor at the bottom of the connecting base plate, and a second bevel gear meshing with the outside of the first bevel gear at the output shaft of the second stepper motor;

[0008] The guide rail assembly includes a crossbeam and a ball screw. A crossbeam is located at the bottom of the left connecting shaft, one end of which is fixedly connected to the bottom of the right connecting shaft. The bottom of the rotating shaft is connected to the top of the crossbeam. Positioning seats are located on both the left and right sides of the bottom of the crossbeam. A motor fixing frame is located on the right side wall of the right positioning seat. A first stepper motor is located on the right side of the inner wall of the motor fixing frame. U-shaped seats are located on opposite sides of the two positioning seats. The ball screw is located between the two U-shaped seats. Connecting blocks extending into the interior of the two U-shaped seats are located on both the left and right side walls of the ball screw. The output shaft of the first stepper motor is connected to the right side wall of the right U-shaped seat. A limiting bolt extending to the bottom of the U-shaped seat is located at the top, penetrating the connecting block. Two limiting nuts, located on the upper and lower sides of the U-shaped seat respectively, are located outside the limiting bolt.

[0009] Preferably, the bottom of the connecting base plate is provided with an annular groove that matches the moving trajectory of the connecting shaft.

[0010] Preferably, the rear side wall of the motor fixing frame is provided with an inspection box door, and the rear side wall of the motor fixing frame is provided with a number of heat dissipation mesh holes.

[0011] Preferably, the connecting block has a threaded through hole inside that is compatible with the limiting bolt.

[0012] Preferably, the contact surface between the limiting nut and the U-shaped seat is provided with serrated anti-slip texture.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a crossbeam guide rail structure for a CNC gantry machining center, which has the following beneficial effects:

[0015] 1. The crossbeam guide rail structure of this CNC gantry machining center, by setting up a guide rail assembly, when it is necessary to disassemble and replace the ball screw, first unscrew the limit nut from the limit bolt, then unscrew the limit bolt from the U-shaped seat, and finally pull the ball screw to drive the connecting block out of the U-shaped seat, thereby achieving the purpose of facilitating the disassembly and replacement of the screw and improving the practicality of the structure.

[0016] 2. The crossbeam guide rail structure of this CNC gantry machining center, by setting a second stepper motor, drives the second bevel gear to rotate through the output shaft. The cooperation between the second bevel gear and the first bevel gear causes the rotating shaft to drive the guide rail assembly to rotate, thereby realizing the purpose of adjusting the position of the crossbeam guide rail according to the usage requirements, further improving the practicality of the structure. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged diagram of point A in the middle.

[0019] In the diagram: 1. Connecting base plate; 2. Connecting shaft; 3. Guide rail assembly; 31. Crossbeam; 32. Positioning seat; 33. Motor fixing frame; 34. First stepper motor; 35. Ball screw; 36. Connecting block; 37. Limit bolt; 38. Limit nut; 39. U-shaped seat; 4. Rotating shaft; 5. First bevel gear; 6. Second stepper motor; 7. Second bevel gear. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-2A crossbeam guide rail structure for a CNC gantry machining center includes a connecting base plate 1. Connecting shafts 2 are slidably connected to the left and right sides of the bottom of the connecting base plate 1. An annular groove adapted to the movement trajectory of the connecting shafts 2 is formed on the bottom of the connecting base plate 1. A guide rail assembly 3 is fixedly connected to the bottom of the left connecting shaft 2, with one end fixedly connected to the bottom of the right connecting shaft 2. A rotating shaft 4 is rotatably connected to the bottom of the connecting base plate 1 and fixedly connected to the top of the guide rail assembly 3. The guide rail assembly 3 includes a crossbeam 31 and a ball screw 35. The bottom of the left connecting shaft 2 is fixedly connected to the crossbeam 31, with one end fixedly connected to the bottom of the right connecting shaft 2. The bottom of the rotating shaft 4 is fixedly connected to the top of the crossbeam 31. Positioning seats 32 are fixedly connected to the left and right sides of the bottom of the crossbeam 31. A motor fixing frame 33 is fixedly connected to the right side wall of the right positioning seat 32. A maintenance door is provided on the rear side wall of the motor fixing frame 33. The rear side wall of the motor mounting frame 33 has a number of heat dissipation mesh holes. The first step motor 34 is fixedly connected to the right side of the inner wall of the motor mounting frame 33. The two positioning seats 32 are rotatably connected to the opposite sides of each other. The ball screw 35 is located between the two U-shaped seats 39. The left and right side walls of the ball screw 35 are fixedly connected to the connecting blocks 36 that extend into the interior of the two U-shaped seats 39 respectively. The output shaft of the first step motor 34 is fixedly connected to the right side wall of the right U-shaped seat 39. The top of the U-shaped seat 39 is threadedly connected to a limiting bolt 37 that extends to its bottom. The limiting bolt 37 passes through the connecting block 36. The interior of the connecting block 36 has a threaded through hole that matches the limiting bolt 37. The external thread of the limiting bolt 37 is connected to two limiting nuts 38 located on the upper and lower sides of the U-shaped seat 39 respectively. The contact surface between the limiting nuts 38 and the U-shaped seat 39 is provided with a serrated anti-slip texture.

[0022] A first bevel gear 5 is fixedly connected to the outside of the rotating shaft 4, a second stepper motor 6 is fixedly connected to the bottom of the connecting base plate 1, and a second bevel gear 7 that meshes with the outside of the first bevel gear 5 is fixedly connected to the output shaft of the second stepper motor 6.

[0023] It is worth noting that both the first stepper motor 34 and the second stepper motor 6 mentioned in this application are externally connected to control switches and drive power supplies. Furthermore, both the first stepper motor 34 and the second stepper motor 6 are conventional and known devices. The standard parts used in this application can all be purchased from the market. The specific connection methods of each part are all connected using conventional methods such as bolts, rivets, and welding that are mature in the prior art. Moreover, the machinery, parts, and equipment all use conventional models in the prior art. In addition, the circuit connection uses conventional connection methods in the prior art. The contents not described in detail in the description belong to the prior art known to those skilled in the art, and will not be described in detail here.

[0024] In summary, the crossbeam guide rail structure of this CNC gantry machining center, by setting the guide rail assembly 3, allows for easy disassembly and replacement of the ball screw 35. First, the limit nut 38 is unscrewed from the limit bolt 37, then the limit bolt 37 is unscrewed from the U-shaped seat 39. Finally, the ball screw 35 is pulled to move the connecting block 36 out of the U-shaped seat 39, thus facilitating the disassembly and replacement of the screw and improving the practicality of the structure. Furthermore, by setting a second stepper motor 6, starting the second stepper motor 6 drives the second bevel gear 7 to rotate via its output shaft. The cooperation between the second bevel gear 7 and the first bevel gear 5 causes the rotating shaft 4 to drive the guide rail assembly 3 to rotate, thereby enabling the adjustment of the crossbeam guide rail's orientation according to usage requirements. This further improves the structure's practicality and solves the problem that existing crossbeam guide rail structures often rely on welding to fix the screw to the motor's output shaft, making disassembly and replacement inconvenient and affecting the structure's usability. Additionally, existing crossbeam guide rail structures have fixed orientations and cannot be adjusted according to usage requirements.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crossbeam guide rail structure for a CNC gantry machining center, comprising a connecting base plate (1), characterized in that: The bottom of the connecting base plate (1) is provided with connecting shafts (2) on both the left and right sides. The bottom of the left connecting shaft (2) is provided with a guide rail assembly (3) that is fixedly connected to the bottom of the right connecting shaft (2). The bottom of the connecting base plate (1) is provided with a rotating shaft (4) that is fixedly connected to the top of the guide rail assembly (3). The outside of the rotating shaft (4) is provided with a first bevel gear (5). The bottom of the connecting base plate (1) is provided with a second stepper motor (6). The output shaft of the second stepper motor (6) is provided with a second bevel gear (7) that meshes with the outside of the first bevel gear (5). The guide rail assembly (3) includes a crossbeam (31) and a ball screw (35). The bottom of the left connecting shaft (2) is provided with a crossbeam (31) that is fixedly connected to the bottom of the right connecting shaft (2). The bottom of the rotating shaft (4) is connected to the top of the crossbeam (31). Positioning seats (32) are provided on both the left and right sides of the bottom of the crossbeam (31). A motor fixing frame (33) is provided on the right side wall of the right positioning seat (32). A first stepper motor (34) is provided on the right side of the inner wall of the motor fixing frame (33). U-shaped seats (39) are provided on the opposite sides of the two positioning seats (32). The ball screw (35) is located between two U-shaped seats (39). The left and right side walls of the ball screw (35) are provided with connecting blocks (36) that extend into the interior of the two U-shaped seats (39). The output shaft of the first stepper motor (34) is connected to the right side wall of the right U-shaped seat (39). The top of the U-shaped seat (39) is provided with a limiting bolt (37) that extends to its bottom. The limiting bolt (37) passes through the connecting block (36). The outside of the limiting bolt (37) is provided with two limiting nuts (38) that are located on the upper and lower sides of the U-shaped seat (39).

2. The crossbeam guide rail structure of a CNC gantry machining center according to claim 1, characterized in that: The bottom of the connecting base plate (1) is provided with an annular groove that is adapted to the moving trajectory of the connecting shaft (2).

3. The crossbeam guide rail structure of a CNC gantry machining center according to claim 1, characterized in that: The rear side wall of the motor fixing frame (33) is provided with an inspection box door, and the rear side wall of the motor fixing frame (33) is provided with a number of heat dissipation mesh holes.

4. The crossbeam guide rail structure of a CNC gantry machining center according to claim 1, characterized in that: The connecting block (36) has a threaded through hole inside that is compatible with the limiting bolt (37).

5. The crossbeam guide rail structure of a CNC gantry machining center according to claim 1, characterized in that: The contact surface between the limiting nut (38) and the U-shaped seat (39) is provided with a serrated anti-slip texture.

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