High-stability numerical control portal frame

Abstract

The utility model relates to the technical field of machine tools, in particular to a high-stability numerical control portal frame. Two sets of X-axis linear motors are arranged on the machine tool, X-axis driving sliding blocks are arranged on the X-axis linear motors, a supporting column is arranged on each X-axis driving sliding block, a cross beam is connected to the top ends of the two supporting columns, a sliding groove is formed in the cross beam, a driving structure is arranged in the cross beam, and a Y-axis driving sliding block in transmission connection with the driving structure is arranged on the sliding groove. The front end of the Y-axis driving sliding block is connected with a Z-axis lifting structure, and the bottom end of the Z-axis lifting structure is connected with a machining structure. Reinforcing pieces are arranged on the tops of the cross beams. A reinforcing structure is arranged in the supporting column; the arched reinforcers enhance the rigidity of the cross beam, disperse stress and reduce stress concentration; the design of the damping holes is beneficial to damping, and the machining precision is improved; x-shaped reinforcing ribs are arranged in the supporting columns, the weight is reduced while the strength is improved, the load and abrasion of the X-axis linear motor are reduced, the service life of the X-axis linear motor is prolonged, and the stability of the machine tool is improved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically to a highly stable CNC gantry. Background Technology

[0002] CNC machining technology has become one of the core technologies of modern manufacturing, and CNC gantry cranes, as a key piece of equipment, are widely used in high-precision and high-complexity machining fields such as aerospace, automobile manufacturing, and mold processing. While traditional CNC gantry crane structures possess a certain degree of rigidity and precision, their main body is mostly a large-mass, one-piece metal structure to achieve the required strength. When subjected to high loads and long-term operation, the weight of the crossbeam itself often causes deformation. Simultaneously, the large mass of the structure causes significant wear on the drive structure, leading to excessive vibration. These problems ultimately result in decreased machining accuracy, accelerated equipment wear, and a decline in overall production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a reasonably designed and highly stable CNC gantry frame that addresses the defects and shortcomings of the existing technology and solves the aforementioned defects.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: It includes a machine tool, which is equipped with two sets of X-axis linear motors. Each X-axis linear motor is equipped with an X-axis drive slider, and each X-axis drive slider is equipped with a support column. A crossbeam is connected to the top of the two support columns. A sliding groove is opened on the crossbeam, and a drive structure is provided inside the crossbeam. A Y-axis drive slider that is connected to the drive structure is provided on the sliding groove. A Z-axis lifting structure is connected to the front end of the Y-axis drive slider, and a machining structure is connected to the bottom end of the Z-axis lifting structure. A reinforcing member is provided at the top of the crossbeam; and a reinforcing structure is provided inside the support columns.

[0005] Preferably, the reinforcing structure includes a main core vertically disposed at the center of the support column, and several sets of reinforcing slots are symmetrically opened on both sides of the main core inside the support column. Each set of reinforcing slots includes four triangular reinforcing slots facing the center, and the four reinforcing slots form an "X"-shaped reinforcing rib.

[0006] Preferably, the reinforcing member has a circular arch structure, and the bottom of the reinforcing member is connected to the crossbeam.

[0007] Preferably, the reinforcing member has several shock-absorbing holes, all of which are through holes.

[0008] The beneficial effects of this utility model after adopting the above structure are:

[0009] 1. This gantry frame is designed with arched reinforcing members, which have good compressive strength and can effectively distribute and bear forces from all directions, improve the overall rigidity of the crossbeam, and reduce bending and deformation caused by stress under long-term load. Moreover, the arched structure can distribute stress concentrated at a certain point to the entire arched area, thereby reducing the stress concentration effect. At the same time, the design of the damping holes can reduce the overall weight of the reinforcing members, thereby reducing the inertia of the crossbeam during movement, and thus reducing the amplitude and frequency of the resulting vibration, achieving a damping effect. Furthermore, the transverse through holes will change the vibration mode and frequency of the reinforcing members and the crossbeam, adjusting the natural frequency to a range far away from the working frequency, avoiding resonance, thereby reducing vibration and improving the stability of the machine tool.

[0010] 2. The main core of this gantry frame is designed as the core support body of the support column. The external reinforcing groove forms an "X" shaped reinforcing rib, which enhances the strength of the support column and significantly reduces its weight. This reduces the pressure of the support column's own weight on the X-axis linear motor, thereby reducing the load on the X-axis linear motor and the resulting wear. This reduces vibration and decrease in machining accuracy caused by wear, extends the service life of the X-axis linear motor, and improves the stability of the machine tool during use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a partial cross-sectional view of the support column in this utility model.

[0013] Explanation of reference numerals in the attached figures:

[0014] 1. Machine tool; 2. X-axis linear motor; 3. X-axis drive slider; 4. Support column; 5. Crossbeam; 6. Reinforcing member; 7. Vibration damping hole; 8. Y-axis drive slider; 9. Z-axis lifting structure; 10. Machining structure; 11. Reinforcing slot; 12. Main core. 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] See Figures 1-2As shown, it includes a machine tool 1, on which two sets of X-axis linear motors 2 are provided. Each X-axis linear motor 2 is equipped with an X-axis drive slider 3. Each X-axis drive slider 3 is equipped with a support column 4. The top of the two support columns 4 is connected to a crossbeam 5. The crossbeam 5 has a sliding groove. A drive structure is provided inside the crossbeam 5. A Y-axis drive slider 8 is provided on the sliding groove and is connected to the drive structure. The front end of the Y-axis drive slider 8 is connected to a Z-axis lifting structure 9. The bottom end of the Z-axis lifting structure 9 is connected to a machining structure 10. A reinforcing member 6 is provided at the top of the crossbeam 5. The reinforcing member 6 has a circular arch structure. The bottom of the reinforcing member 6 is connected to the crossbeam 5. Several vibration damping holes 7 are provided inside the reinforcing member 6. All vibration damping holes 7 are through holes. The support columns 4 are equipped with a reinforcing structure.

[0017] The reinforcing structure includes a main core 12 vertically located at the center of the support column 4. Several sets of reinforcing slots 11 are symmetrically opened on both sides of the main core 12 inside the support column 4. Each set of reinforcing slots 11 includes four triangular reinforcing slots 11 facing the center. The four reinforcing slots 11 form an "X" shaped reinforcing rib.

[0018] The principle and usage process of this utility model:

[0019] During use, the position of the machining structure 10 can be controlled and machining can be performed by controlling the X-axis linear motor 2, the drive structure in the crossbeam 5, and the Z-axis lifting structure 9. In use, the arched reinforcing member 6 has good compressive strength, which can effectively disperse and bear the force from all directions, improve the overall rigidity of the crossbeam 5, reduce the bending and deformation caused by the force under long-term load, and the arched structure can disperse the stress concentrated at a certain point to the entire arched area, thereby reducing the stress concentration effect, reducing the risk of material fatigue, and extending the service life of the crossbeam 5.

[0020] Meanwhile, the design of the damping hole 7 can reduce the overall weight of the reinforcing member 6, thereby reducing the inertia of the crossbeam 5 when it moves, and thus reducing the amplitude and frequency of the vibration generated therefrom, achieving the effect of damping; and the transverse through hole will change the vibration mode and frequency of the reinforcing member 6 and the crossbeam 5, adjusting the natural frequency to a range far away from the working frequency, avoiding resonance, thereby reducing vibration and improving the stability of the machine tool 1.

[0021] The main core 12 is set inside the support column 4 as the core support body, and the external reinforcing groove 11 forms an "X" shaped reinforcing rib, which enhances the strength of the support column 4 and significantly reduces the weight of the support column 4. This reduces the pressure of the support column 4's own weight on the X-axis linear motor 2, thereby reducing the load on the X-axis linear motor 2 and the resulting wear, reducing vibration and machining accuracy caused by wear, extending the service life of the X-axis linear motor 2, and improving the stability of the machine tool 1 during use.

[0022] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A highly stable CNC gantry crane, comprising a machine tool (1), characterized in that: The machine tool (1) is equipped with two sets of X-axis linear motors (2), each of which is equipped with an X-axis drive slider (3). Each X-axis drive slider (3) is equipped with a support column (4). The top of the two support columns (4) is connected to a crossbeam (5). The crossbeam (5) has a groove. The crossbeam (5) is equipped with a drive structure. The groove is equipped with a Y-axis drive slider (8) that is connected to the drive structure. The front end of the Y-axis drive slider (8) is connected to a Z-axis lifting structure (9). The bottom end of the Z-axis lifting structure (9) is connected to a machining structure (10). The top of the crossbeam (5) is equipped with a reinforcing member (6). The support column (4) is equipped with a reinforcing structure.

2. The highly stable CNC gantry crane according to claim 1, characterized in that: The reinforcing structure includes a main core (12) vertically located at the center of the support column (4). Several sets of reinforcing slots (11) are symmetrically opened on both sides of the main core (12) inside the support column (4). Each set of reinforcing slots (11) includes four triangular reinforcing slots (11) facing the center. The four reinforcing slots (11) form an "X" shaped reinforcing rib.

3. The highly stable CNC gantry crane according to claim 2, characterized in that: The reinforcing member (6) is an arched structure, and the bottom of the reinforcing member (6) is connected to the crossbeam (5).

4. A highly stable CNC gantry crane according to claim 3, characterized in that: The reinforcing member (6) has several damping holes (7), all of which are through holes.

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