Double-drive gantry structure suitable for laser equipment

Abstract

This utility model relates to a dual-drive gantry structure suitable for laser equipment, including a mounting base on which a left Y-axis and a right Y-axis are symmetrically mounted; crossbeams are mounted on the left and right Y-axis. The left Y-axis includes two parallel guide rails, a second guide rail, and a stator mounted between the first and second guide rails. A mover is movably mounted on the stator. The first and second guide rails are located on either side of the mover, jointly supporting it. A left optical grating ruler is fitted to one side of the mover. The right Y-axis has the same structure as the left Y-axis. Both the left and right Y-axis utilize dual guide rails to support the mover, which evenly distributes the strong magnetic force between the mover and stator, avoiding force misalignment on a single guide rail and effectively reducing the cogging force of the linear motor. Simultaneously, it reduces the influence of cogging effect, making the output force of the single-sided drive shaft more stable, thus driving the crossbeam to move more smoothly, meeting the motion stability requirements of laser processing.

Description

Technical Field

[0001] This utility model relates to a gantry structure, and more particularly to a dual-drive gantry structure suitable for laser equipment. Background Technology

[0002] In the field of laser processing equipment, gantry structures are often used as the mounting load for subsequent laser equipment to facilitate spatial changes at the processing station. Therefore, the gantry structure is a core component for achieving high-precision movement of processing components. The stability and motion accuracy of the gantry structure directly affect the processing quality of laser cutting, marking, and other processes.

[0003] The existing Chinese patent CN220006356U discloses a gantry-type dual-drive precision laser processing platform with an all-granite structure. This patent utilizes granite to manufacture components such as the X-axis moving plate, Z-axis moving plate, crossbeam, and base. While leveraging the high stability and consistent thermal expansion coefficient of granite to improve overall structural stability, this technical solution does not address the optimized design of the mover support method and the synchronization of the left and right Y-axis movements. Furthermore, most dual-drive gantry structures currently on the market employ a single-side, single-rail design to support the mover on both the left and right Y-axis. When the mover and stator generate driving force, this structure is prone to increased offset due to concentrated force on a single rail, exacerbating the cogging effect of the linear motor and causing unstable mover movement. Moreover, due to insufficient rigidity of the single-rail support, the left and right Y-axis often exhibit asynchronous movement when driving the crossbeam, specifically manifested as inconsistent movement speeds or displacement deviations of the movers on both sides, directly affecting the positioning accuracy of the laser processing components. Especially in high-precision laser processing scenarios, such problems can cause workpiece processing errors to exceed the allowable range.

[0004] Furthermore, as the precision requirements of laser processing continue to increase, the shortcomings of existing dual-drive gantry structures in terms of support rigidity, motion synchronization, and displacement detection accuracy are becoming increasingly apparent. In view of these deficiencies, the designers have actively researched and innovated to create a dual-drive gantry structure suitable for laser equipment, making it more industrially valuable. Utility Model Content

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a dual-drive gantry structure suitable for laser equipment.

[0006] This utility model discloses a dual-drive gantry structure suitable for laser equipment, comprising a mounting base, wherein: a left Y-axis and a right Y-axis are symmetrically mounted on the mounting base; crossbeams are mounted on the left Y-axis and the right Y-axis; the left Y-axis includes two parallel first guide rails and a second guide rail, with a stator mounted between the first guide rails and the second guide rails, and a mover movably mounted on the stator; the first guide rails and the second guide rails are respectively located on both sides of the mover, jointly supporting the mover; a left grating ruler is fitted and mounted on one side of the mover; the structure of the right Y-axis is the same as that of the left Y-axis.

[0007] Furthermore, in the aforementioned dual-drive gantry structure suitable for laser equipment, a support plate is installed at the upper end of the mover, and the lower part of the crossbeam is connected to the support plate.

[0008] Furthermore, in the aforementioned dual-drive gantry structure suitable for laser equipment, the distance between the first guide rail and the second guide rail is 1.2 to 1.5 times the width of the mover.

[0009] Furthermore, in the aforementioned dual-drive gantry structure suitable for laser equipment, the first and second guide rails are linear roller guide rails.

[0010] Furthermore, in the aforementioned dual-drive gantry structure suitable for laser equipment, the left grating ruler is fixed on the frame of the left Y-axis, and the distance between its measuring head and the side of the mover is 1mm to 5mm.

[0011] Furthermore, in the aforementioned dual-drive gantry structure suitable for laser equipment, the bottom of the mover is equipped with a slider that cooperates with the first guide rail and the second guide rail.

[0012] Furthermore, in the aforementioned dual-drive gantry structure suitable for laser equipment, leveling feet are installed between the bottom of the left Y-axis and the right Y-axis and the mounting base.

[0013] Furthermore, in the aforementioned dual-drive gantry structure suitable for laser equipment, two parallel auxiliary traction guide rails are installed on the front side of the crossbeam.

[0014] Furthermore, in the aforementioned dual-drive gantry structure suitable for laser equipment, displacement sensors are installed on the left Y-axis, right Y-axis, and crossbeam. These displacement sensors are either infrared probes or laser probes.

[0015] Furthermore, in the aforementioned dual-drive gantry structure suitable for laser equipment, the mounting base has a plurality of positioning holes distributed thereon.

[0016] By means of the above solution, this utility model has at least the following advantages: 1. Both the left and right Y-axis utilize dual guide rails to support the mover, which evenly distributes the strong magnetic force between the mover and stator, avoiding force misalignment on a single guide rail and effectively reducing the cogging force of the linear motor. Simultaneously, it reduces the impact of cogging effect, making the output force of the single-sided drive shaft more stable, thereby driving the crossbeam to move more smoothly and meeting the motion stability requirements of laser processing.

[0017] 2. The left and right Y-axis can achieve dual guide rail support. Compared with the single rail support of the left and right Y-axis in the existing technology, the rigidity is greatly improved. It can effectively avoid the alternating movement of the left and right Y-axis, ensuring that the two move synchronously, and further improving the stability and accuracy of the beam movement.

[0018] 3. The left and right optical grating rulers are positioned close to the corresponding movers, allowing for real-time monitoring by displacement sensors to provide precise displacement data for the control system. This ensures the beam moves accurately along a preset trajectory, meeting the high-precision processing requirements of laser equipment.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a dual-drive gantry structure suitable for laser equipment.

[0021] Figure 2 This is a schematic diagram of the movement and stator assembly.

[0022] The meanings of the labels in the figures are as follows.

[0023] Detailed Implementation The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] like Figures 1 to 2A dual-drive gantry structure suitable for laser equipment includes a mounting base 11, which serves as the base for supporting components. The mounting base 11 has several positioning holes. These positioning holes ensure precise alignment between the mounting base 11 and other basic components of the laser equipment, preventing misalignment of the mounting base 11 and ensuring the accuracy of subsequent laser processing. Its unique feature is the symmetrical mounting of a left Y-axis 1 and a right Y-axis 3 on the mounting base 11. Leveling feet are installed at the bottom of both the left and right Y-axis 1 and between them and the mounting base 11. This allows adjustment of the height of the leveling feet to ensure that the left and right Y-axis 1 and 3 are on the same horizontal plane after installation, preventing tilting of the crossbeam 2 due to height differences and thus affecting the positional accuracy of the laser processing components. Alternatively, by improving processing precision, the left and right Y-axis 1 and 3 can be made perfectly level after fabrication, eliminating the need for leveling feet. Simultaneously, a crossbeam 2 is mounted on the upper ends of both the left Y-axis 1 and the right Y-axis 3. The crossbeam 2 serves as the mounting carrier for the laser processing assembly, driving the assembly to move along the Y-axis. During implementation, subsequent laser processing assemblies can be adapted to use such as laser cutting heads and laser marking heads. Furthermore, two parallel auxiliary guide rails are installed on the front side of the crossbeam 2 to facilitate the displacement adjustment and installation of the laser processing assembly.

[0025] According to a preferred embodiment of this utility model, the left Y-axis 1 includes two parallel guide rails, a first guide rail 5 and a second guide rail 8, both of which are linear roller guide rails. The use of linear roller guide rails provides high load-bearing capacity and smooth movement, reducing frictional resistance during the movement of the mover 6, while also withstanding strong magnetic impacts between the mover 6 and the stator 7, making it suitable for the long-term high-frequency operation of laser equipment. Furthermore, an installation space is reserved between the two guide rails for fixing the stator 7. The mover 6 is movably mounted on the stator 7, with the first guide rail 5 and the second guide rail 8 located on the left and right sides of the mover 6 respectively, jointly providing symmetrical support for the mover 6.

[0026] Furthermore, the bottom of the mover 6 is fitted with a slider that matches the first guide rail 5 and the second guide rail 8. During use, the clearance between the slider and the guide rail is precisely controlled to ensure that the mover 6 can slide smoothly along the guide rail while avoiding lateral deviation during movement, thus ensuring the stability of the output force of the mover 6. Simultaneously, the distance between the first guide rail 5 and the second guide rail 8 is set to 1.2 to 1.5 times the width of the mover 6. This distance allows the supporting force of the two guide rails on the mover 6 to be evenly distributed, preventing concentrated support due to too small a distance or tilting of the mover 6 due to too large a distance, further improving support stability. When the mover 6 and stator 7 are energized, the strong magnetic force generated between them is evenly distributed on the first guide rail 5 and the second guide rail 8, completely solving the problem of "offset caused by force on a single guide rail, aggravating cogging force" in existing technologies, and effectively reducing the cogging effect of the linear motor.

[0027] In practical implementation, a left grating ruler 4 is fitted to one side of the mover 6. This left grating ruler 4 is fixed to the frame of the left Y-axis 1, and the distance between the measuring head of the left grating ruler 4 and the side of the mover 6 is controlled between 1mm and 5mm. Specifically, the left grating ruler 4 is positioned close to the mover 6 to minimize displacement detection errors, capture the movement trajectory of the mover 6 in real time, and provide accurate displacement data for the laser equipment control system. Simultaneously, it ensures that the crossbeam 2 can move along a preset path, meeting the high-precision requirements of laser processing. Correspondingly, the structure of the right Y-axis 3 used in this invention is exactly the same as that of the left Y-axis 1. That is, the right Y-axis 3 also includes two parallel linear roller guides, corresponding to the first guide rail 5 and the second guide rail 8 of the left Y-axis 1. It also includes a stator installed between the two guide rails, a mover movably mounted on the stator, and a right grating ruler fitted to one side of the mover, corresponding to the left grating ruler 4 of the left Y-axis 1. The installation method of the right grating ruler and the distance requirements between the measuring head and the corresponding mover are consistent with those of the left grating ruler 4. The symmetrical structural design of the right Y-axis 3 and the left Y-axis 1 is the basis for ensuring their synchronous movement, which can effectively avoid the "alternating movement of the left and right Y-axis due to structural differences" in the existing technology, and further improve the stability of the movement of the crossbeam 2.

[0028] Furthermore, this invention includes displacement sensors 10 installed on the left Y-axis 1, right Y-axis 3, and crossbeam 2. The displacement sensors 10 can be either infrared or laser probes. During implementation, the laser probe offers higher detection accuracy than the infrared probe, making it suitable for scenarios with extremely high precision requirements, such as laser cutting and laser precision engraving. Infrared probes are suitable for scenarios with relatively less stringent precision requirements, such as laser marking. The function of the displacement sensors 10 is to monitor the movement speed and displacement deviation of the movers on the left Y-axis 1 and right Y-axis 3 in real time, as well as the overall movement state of the crossbeam 2. When asynchronous movement is detected between the left Y-axis 1 and right Y-axis 3, such as one mover moving too fast and the other too slow, or abnormal offset of the crossbeam 2, the displacement sensors 10 immediately feed the signal back to the laser equipment control system. The control system quickly corrects the deviation by adjusting parameters such as the drive current and frequency of the left Y-axis 1 and right Y-axis 3, ensuring synchronized movement. For simplification, limit switches can also be used to construct the displacement sensors 10.

[0029] The working process of this utility model's dual-drive gantry structure in laser equipment is as follows: After the laser equipment is started, the control system sends drive signals to the stators 7 of the left Y-axis 1 and right Y-axis 3. The stators 7 and their corresponding movers 6 are energized, generating a strong magnetic force, thus providing driving power. Then, under the influence of this strong magnetic force, the mover 6 of the left Y-axis 1 slides along the first guide rail 5 and the second guide rail 8, while the mover 6 of the right Y-axis 3 slides synchronously along its corresponding two guide rails. Because the left Y-axis 1 and right Y-axis 3 are structurally symmetrical and controlled by the same control system, the speed and displacement of their movers 6 are completely identical.

[0030] Simultaneously, when the mover 6 moves, the support plate 9 at its upper end, which connects the mover 6 to the crossbeam 2, drives the crossbeam 2 to move along the Y-axis. The laser processing components on the crossbeam 2 move synchronously with the crossbeam 2, performing laser processing on the workpiece to achieve operations such as cutting and marking. Furthermore, during the movement, the left and right optical grating rulers 4 and 5 detect the displacement of the corresponding mover 6 in real time and feed the data back to the control system. At the same time, each displacement sensor 10 monitors the movement status of the left Y-axis 1, right Y-axis 3, and crossbeam 2. If any deviation occurs during processing, the control system immediately adjusts the drive parameters to ensure precise movement.

[0031] Once processing is complete, the control system sends a stop signal, de-energizing stator 7 and mover 6, thus eliminating the strong magnetic force. As a result, mover 6 stops moving, and beam 2 stops as well. If the next processing cycle is required, the control system can drive mover 6 to reset beam 2 to its initial position.

[0032] Furthermore, the directions or positional relationships described in this utility model are based on the directions or positional relationships shown in the accompanying drawings. They are only for the purpose of facilitating the description of this utility model and simplifying the description, and are not intended to indicate or imply that the device or structure referred to must have a specific orientation, or to operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A double-drive gantry structure suitable for laser equipment, comprising a mounting base (11), characterized in that: The mounting base (11) is symmetrically equipped with a left Y-axis (1) and a right Y-axis (3); a crossbeam (2) is installed on the left Y-axis (1) and the right Y-axis (3); the left Y-axis (1) includes two parallel first guide rails (5) and second guide rails (8), and a stator (7) is installed between the first guide rails (5) and the second guide rails (8). A mover (6) is movably installed on the stator (7). The first guide rails (5) and the second guide rails (8) are located on both sides of the mover (6) and support the mover (6) together; a left grating ruler (4) is fitted to one side of the mover (6); the structure of the right Y-axis (3) is the same as that of the left Y-axis (1).

2. The double-drive gantry structure suitable for laser equipment according to claim 1, characterized in that: The upper end of the mover (6) is equipped with a bearing plate (9), and the lower part of the crossbeam (2) is connected to the bearing plate (9).

3. The double drive gantry structure suitable for laser apparatus according to claim 1, wherein: The distance between the first guide rail (5) and the second guide rail (8) is 1.2 to 1.5 times the width of the mover (6).

4. The dual-drive gantry structure suitable for laser apparatus according to claim 1, wherein: The first guide rail (5) and the second guide rail (8) are linear roller guide rails.

5. The dual-drive gantry structure suitable for laser apparatus according to claim 1, wherein: The left grating ruler (4) is fixed on the frame of the left Y-axis (1), and the distance between its measuring head and the side of the mover (6) is 1mm to 5mm.

6. The dual-drive gantry structure suitable for laser apparatus according to claim 1, wherein: The bottom of the mover (6) is equipped with a slider that cooperates with the first guide rail (5) and the second guide rail (8).

7. The dual-drive gantry structure suitable for laser apparatus according to claim 1, wherein: Leveling feet are installed between the bottom of the left Y-axis (1) and the right Y-axis (3) and the mounting base (11).

8. The dual-drive gantry structure suitable for laser apparatus according to claim 1, wherein: Two parallel auxiliary guide rails are installed on the front side of the crossbeam (2).

9. The dual-drive gantry structure suitable for laser apparatus according to claim 1, wherein: Displacement sensors (10) are installed on the left Y-axis (1), right Y-axis (3), and crossbeam (2). The displacement sensors (10) are either infrared probes or laser probes.

10. The dual-drive gantry structure for laser equipment according to claim 1, characterized in that: The mounting base (11) has several positioning holes.

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