Gantry type three-dimensional displacement precision laser cutting machine

Abstract

This utility model discloses a gantry-type three-dimensional displacement precision laser cutting machine, including a frame, a motion controller, a worktable, a workpiece clamping structure, and a laser cutter. Gantry frames are fixed to the symmetrical sides of the frame, and a first linear track structure is provided on the top of the gantry frames. A crossbeam is provided between the two gantry frames, and a second linear track structure is provided on the crossbeam. A first drive structure is fixed to both ends of the crossbeam. A sliding support is provided on the crossbeam, and a vertical lifting structure is provided on the sliding support. The laser cutter is mounted on the vertical lifting structure. A second drive structure is fixed on the sliding support. This utility model has a reasonable structural design, which can smoothly and reliably achieve translational adjustment at different positions, meeting the laser cutting needs of different positions, improving cutting accuracy and stability, increasing adjustment efficiency and smoothness, and improving production efficiency. With the help of a rotary table, the cutting angle of the laser cutter can be adjusted as needed.

Description

Technical Field

[0001] This utility model belongs to the field of laser cutting machine technology, specifically relating to a gantry-type three-dimensional displacement precision laser cutting machine. Background Technology

[0002] A laser cutting machine focuses a laser beam emitted from a laser source into a high-density laser beam through an optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach its melting or boiling point. Simultaneously, high-pressure gas, coaxial with the speed of light, blows away the molten or vaporized metal. It has advantages such as high precision and fast cutting speed. For example, CN202322047890.9 shows a material rack lifting device for a laser cutting machine, which includes a protective box. Inside the protective box, there is a laser cutting machine, an adjustment mechanism, and a lifting mechanism. The lifting mechanism is located below the adjustment mechanism. The adjustment mechanism includes an adjustment part and a clamping part. The clamping part is located above the adjustment part. The adjustment part includes a support plate, a connecting frame, a motor, a reciprocating threaded rod, a slider, a slide bar, and a feeding plate. The bottom surface of the connecting frame is fixedly connected to the top surface of the support plate.

[0003] While it can meet general usage needs, it mainly adopts a single-track structure, which lacks overall structural rigidity. This affects the overall stability of the structure. Furthermore, the laser is easily restricted by other components or cables during translation, affecting its swing angle. Consequently, it can affect the cutting accuracy and efficiency to some extent, limiting its applicability and making it difficult to meet market demands. Utility Model Content

[0004] The purpose of this invention is to provide a gantry-type three-dimensional displacement precision laser cutting machine with a reasonable structural design and stable and reliable operation.

[0005] The technical solution to achieve the purpose of this utility model is a gantry-type three-dimensional displacement precision laser cutting machine, including a frame, a motion controller fixed inside the frame, a worktable fixed on the top surface of the frame, a workpiece clamping structure provided on the top surface of the worktable, a laser cutter provided above the worktable, gantry frames fixed on the symmetrical sides of the frame, and a first linear track structure provided on the top of the gantry frames. A crossbeam is provided between the two gantry frames, and a second linear track structure is provided on the crossbeam. The first linear track structure and the second linear track structure are arranged perpendicularly. The two ends of the crossbeam are fixed with a first driving structure, which cooperates with the first linear track structure to achieve linear translation. A sliding support is provided on the crossbeam, and a vertical lifting structure is provided on the sliding support. The laser cutter is mounted on the vertical lifting structure. A second driving structure is fixed on the sliding support, and the second driving structure cooperates with the second linear track structure to achieve linear translation.

[0006] A further preferred embodiment is that the first linear track structure includes a first track bar and a first grinding helical toothed bar parallel to the first track bar; Both the first track bar and the first grinding helical rack are fixed to the top surface of the gantry frame; A first slider is slidably mounted on the first track bar, and the first slider is fixed to the bottom end of the crossbeam; The first drive structure includes a drive motor and a drive gear fixed on the main shaft of the drive motor; The drive gear meshes with the tooth groove of the first grinding helical rack; The drive motor is connected to the motion controller.

[0007] A further preferred embodiment is that the second linear track structure includes a second track bar and a second grinding helical toothed bar parallel to the second track bar; The second track bar is fixed to the side of the crossbeam, and the second grinding helical toothed rack is fixed to the top surface of the crossbeam; The back of the sliding support is fixed with a second slider that cooperates with the second track bar, and the top surface of the sliding support is above the crossbeam. The second drive structure includes a control motor fixed on a sliding support, and a control gear fixed on the main shaft of the control motor. The control gear meshes with the tooth groove of the second grinding helical rack. The control motor is connected to the motion controller.

[0008] A further preferred embodiment is that the vertical lifting structure includes a lead screw nut fixed on a sliding support, an adjusting lead screw threadedly connected to the lead screw nut and capable of lifting, and a servo motor fixed to the top of the adjusting lead screw; A movable plate is fixed on the motor base of the servo motor, and a hollow reducer and a rotating disk connected to the hollow reducer are fixed on the lower part of the movable plate. The laser cutter is fixed on the rotating disk. The movable plate is also fixed with a vertical linear guide rail parallel to the adjusting screw, and a linear slider is fixed on the sliding support. The vertical linear guide rail moves up and down on the linear slider. The servo motor is connected to the motion controller.

[0009] A further preferred embodiment is that a control platform connected to the motion controller is fixed on the gantry.

[0010] A further preferred embodiment is that the workpiece fixture structure includes a U-shaped fixture base, an n-shaped support base, an angle servo motor, a fixture body, and a rotary motor; The U-shaped clamp seat is fixed on the worktable, and the angle servo motor is fixed on the side of the U-shaped clamp seat; The n-shaped support is set inside the U-shaped clamp seat, and its end is fixedly connected to the main shaft of the angle servo motor; The rotary motor is fixed to the bottom surface of the n-shaped support base, and the clamp body is located on the top surface of the n-shaped support base, with the main shaft of the rotary motor fixedly connected to the middle part of the clamp body. Both the angle servo motor and the rotary motor are connected to the motion controller.

[0011] A further preferred embodiment is that a first drag chain is provided at the end of the crossbeam and on the top surface of the gantry frame; A second drag chain is provided between the sliding support and the top surface of the crossbeam.

[0012] A further preferred embodiment is that the number of the first track bar and the second track bar is two or three that are parallel to each other.

[0013] A further preferred embodiment is that the cross-section of the first track bar and the second track bar is T-shaped or I-shaped.

[0014] This utility model has positive effects: Its structure is rationally designed. Through a gantry frame combined with a crossbeam, a first linear track structure, a second linear track structure, a first drive structure, and a second drive structure, it can smoothly and reliably achieve translational adjustment at different positions, meeting the laser cutting needs of different locations, improving cutting accuracy and stability. Furthermore, the first and second drive structures also improve adjustment efficiency and smoothness, thus greatly increasing production efficiency. A vertical lifting structure is also included, enabling vertical lifting adjustment. Combined with a rotary table, the cutting angle of the laser cutter can be adjusted as needed, expanding its applicability. Moreover, its workpiece clamping structure allows for angle and rotation adjustment, thus meeting the cutting needs of workpieces at different positions and angles, improving operational stability and reliability. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another perspective; Figure 3 for Figure 1Enlarged structural diagram at point A in the middle; Figure 4 for Figure 1 Enlarged structural diagram at point B; Figure 5 This is a partial disassembled structural diagram of the vertical lifting structure, sliding support, and laser cutter in this utility model.

[0016] Reference numerals: 1. Frame; 2. Worktable; 3. Workpiece clamping structure; 3. U-shaped clamping seat; 31. N-shaped support seat; 32. Angle servo motor; 33. Clamping body; 34. Rotary motor; 35. Laser cutter; 4. Gantry frame; 5. First linear track structure; 6. First track bar; 61. First grinding helical rack; 62. First slider; 63. Crossbeam; 7. Second linear track structure; 8. Second track bar; 81. Second grinding helical rack; 82. First drive structure; 9. Sliding support; 10. Vertical lifting structure; 11. Movable plate; 111. Servo motor; 112. Adjusting screw; 113. Rotary disk; 114. Screw nut; 115. Vertical linear guide rail; 116. Linear slider; 117. Hollow reducer; 118. Second drive structure; 12. Control platform; 13. First drag chain; 14. Second drag chain; 15. Detailed Implementation

[0017] 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. Example

[0018] See Figures 1 to 5 As shown, a gantry-type three-dimensional displacement precision laser cutting machine includes a frame 1, a motion controller fixed inside the frame, a worktable 2 fixed on the top surface of the frame, a workpiece clamping structure 3 provided on the top surface of the worktable, a laser cutter 4 provided above the worktable, gantry frames 5 fixed on the symmetrical sides of the frame, and a first linear track structure 6 provided on the top of the gantry frames. In this embodiment, the frame, laser cutter, and motion controller are all conventional structures of the prior art, simply applied. The motion controller is mainly used to realize the corresponding drive control operation. The gantry frame is a heavy-duty gantry frame, which is welded and fixed as a whole, and is processed in one step by a large CNC gantry milling machine. The frame and gantry frame are annealed to eliminate stress, thereby ensuring the accuracy of the overall structure and providing a good foundation for continuous and efficient operation. In this embodiment, a crossbeam 7 is provided between the two gantry frames, and a second linear track structure 8 is provided on the crossbeam. The first and second linear track structures are arranged perpendicularly. A first drive structure 9 is fixed to both ends of the crossbeam, and the first drive structure cooperates with the first linear track structure to achieve linear translation. A sliding support 10 is provided on the crossbeam, and a vertical lifting structure 11 is provided on the sliding support. The laser cutter is mounted on the vertical lifting structure. A second drive structure 12 is fixed on the sliding support, and the second drive structure cooperates with the second linear track structure to achieve linear translation. In this embodiment, the first and second linear track structures are perpendicular, enabling translation along the X and Y axes. Simultaneously, in conjunction with the vertical lifting structure, translation along the Z axis is achieved, thus satisfying three-dimensional adjustment operations and meeting the needs of different usage scenarios.

[0019] In this embodiment, the sliding support includes a left side plate, a right side plate, a mounting plate, and a transverse support plate, which are fixed by screws or welding. The mounting plate is attached to the crossbeam and is used to install and fix the second slider. Its vertical lifting structure moves up and down within the space formed by the left side plate, the right side plate, and the mounting plate. The transverse support plate is used to install the second drive structure. In practical applications, it can also be other common sliding supports.

[0020] In this embodiment, the first linear track structure includes a first track bar 61 and a first grinding helical toothed rack 62 parallel to the first track bar; during assembly, the first track bar and the first grinding helical toothed rack are both fixed to the top surface of the gantry frame; and a first slider 63 is slidably disposed on the first track bar, and the first slider is fixed to the bottom end of the crossbeam. Furthermore, its first driving structure includes a drive motor and a drive gear fixed on the main shaft of the drive motor; the drive gear meshes with the tooth groove of the first grinding helical rack; the drive motor is connected to the motion controller. In use, the first track bar mainly cooperates with the first slider to achieve sliding guidance, while the first grinding helical rack, in conjunction with the drive gear on the drive motor, can achieve translational drive control, ensuring the smoothness and effectiveness of translation.

[0021] In this embodiment, the second linear track structure includes a second track bar 81 and a second grinding helical toothed rack 82 parallel to the second track bar; during assembly, the second track bar is fixed to the side of the crossbeam, and the second grinding helical toothed rack is fixed to the top surface of the crossbeam; a second slider that cooperates with the second track bar is fixed to the back of the sliding support, and the top surface of the sliding support is above the crossbeam; the second slider is fixed to the back of the mounting plate.

[0022] The second drive structure includes a control motor fixed on a sliding support. A control gear is fixed on the main shaft of the control motor, and the control gear meshes with the tooth groove of the second grinding helical rack. The control motor is connected to the motion controller. In use, the second track is mainly used for translational guidance, ensuring the smoothness and effectiveness of translation, while the control motor, through the control gear and the second grinding helical rack, ensures the reliability of driving the translation.

[0023] In practical applications, the number of the first and second track bars is two or three, which are parallel to each other. The cross-section of the first and second track bars is T-shaped or I-shaped.

[0024] like Figure 5 As shown, in practical applications, the vertical lifting structure includes a lead screw nut 115 fixed on a sliding support, an adjusting lead screw 113 threadedly connected to the lead screw nut and capable of lifting, a servo motor 112 fixed at the top of the adjusting lead screw; a movable plate 111 fixed on the motor base of the servo motor, and a hollow reducer 118 and a rotating disk 114 connected to the hollow reducer fixed at the lower part of the movable plate, the laser cutter fixed on the rotating disk; a vertical linear guide rail 116 parallel to the adjusting lead screw is also fixed on the movable plate, and a linear slider 117 is fixed on the sliding support, the vertical linear guide rail lifting on the linear slider; The servo motor is connected to the motion controller.

[0025] In this embodiment, the servo motor, in conjunction with the adjusting screw and screw nut, enables lifting and adjusting operations. The rotary disc, in conjunction with the laser cutter, allows for cutting at different angles, improving the effectiveness and reliability of the cutting process. In practical applications, the hollow reducer is connected to the motion controller for corresponding control. In this embodiment, the screw nut is fixed to the sliding support. When the servo motor drives the adjusting screw, the servo motor, adjusting screw, and movable plate as a whole will lift relative to the screw nut, ensuring the effectiveness and reliability of the lifting. In practical applications, a vertical linear guide rail is fixed to the movable plate, along with a linear slider. The linear slider is fixed to the side of the sliding support, enabling multi-point positioning in conjunction with the screw nut, improving the stability and effectiveness of the lifting.

[0026] Furthermore, a control platform 13 connected to the motion controller is fixed on the gantry frame, facilitating corresponding operation and control.

[0027] Furthermore, the workpiece fixture structure includes a U-shaped fixture base 31, an n-shaped support base 32, an angle servo motor 33, a fixture body 34, and a rotary motor 35. The fixture body is a conventional structure from the prior art, simply applied. During assembly, the U-shaped fixture base is fixed to the worktable, and the angle servo motor is fixed to the side of the U-shaped fixture base. The n-shaped support base is disposed within the U-shaped fixture base, and its end is fixedly connected to the spindle of the angle servo motor. The rotary motor is fixed to the bottom surface of the n-shaped support base, and the fixture body is located on the top surface of the n-shaped support base, with the spindle of the rotary motor fixedly connected to the middle of the fixture body. Both the angle servo motor and the rotary motor are connected to a motion controller. In this embodiment, the motion controller can realize angle control of the angle servo motor and adjustment of the rotation angle of the rotary motor, improving the accuracy and effectiveness of control.

[0028] In this embodiment, a first drag chain 14 is provided between the end of the crossbeam and the top surface of the gantry; and a second drag chain 15 is provided between the sliding support and the top surface of the crossbeam. This is mainly used to house pipelines and prevent damage during translation.

[0029] This utility model has positive effects: Its structure is rationally designed. Through a gantry frame combined with a crossbeam, a first linear track structure, a second linear track structure, a first drive structure, and a second drive structure, it can smoothly and reliably achieve translational adjustment at different positions, meeting the laser cutting needs of different locations, improving cutting accuracy and stability. Furthermore, the first and second drive structures also improve adjustment efficiency and smoothness, thus greatly increasing production efficiency. A vertical lifting structure is also included, enabling vertical lifting adjustment. Combined with a rotary table, the cutting angle of the laser cutter can be adjusted as needed, expanding its applicability. Moreover, its workpiece clamping structure allows for angle and rotation adjustment, thus meeting the cutting needs of workpieces at different positions and angles, improving operational stability and reliability.

[0030] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0031] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A gantry type three-dimensional displacement precision laser cutting machine, comprising a rack, a motion controller fixed in the rack, a workbench fixed on the top surface of the rack, a workpiece clamp structure arranged on the top surface of the workbench, and a laser cutting device arranged above the workbench, characterized in that: A gantry frame is fixed to each of the symmetrical sides of the frame, and a first linear track structure is provided on the top of the gantry frame; A crossbeam is provided between the two gantry frames, and a second linear track structure is provided on the crossbeam. The first linear track structure and the second linear track structure are arranged perpendicularly. The two ends of the crossbeam are fixed with a first driving structure, which cooperates with the first linear track structure to achieve linear translation. A sliding support is provided on the crossbeam, and a vertical lifting structure is provided on the sliding support. The laser cutter is mounted on the vertical lifting structure. A second driving structure is fixed on the sliding support, and the second driving structure cooperates with the second linear track structure to achieve linear translation.

2. The gantry type three-dimensional displacement precision laser cutting machine according to claim 1, characterized in that: The first linear track structure includes a first track bar and a first grinding helical toothed bar parallel to the first track bar; Both the first track bar and the first grinding helical rack are fixed to the top surface of the gantry frame; A first slider is slidably mounted on the first track bar, and the first slider is fixed to the bottom end of the crossbeam; The first drive structure includes a drive motor and a drive gear fixed on the main shaft of the drive motor; The drive gear meshes with the tooth groove of the first grinding helical rack; The drive motor is connected to the motion controller.

3. The gantry type three-dimensional displacement precision laser cutting machine according to claim 2, characterized in that: The second linear track structure includes a second track bar and a second grinding helical toothed bar parallel to the second track bar; The second track bar is fixed to the side of the crossbeam, and the second grinding helical toothed rack is fixed to the top surface of the crossbeam; The back of the sliding support is fixed with a second slider that cooperates with the second track bar, and the top surface of the sliding support is above the crossbeam. The second drive structure includes a control motor fixed on a sliding support, and a control gear fixed on the main shaft of the control motor. The control gear meshes with the tooth groove of the second grinding helical rack. The control motor is connected to the motion controller.

4. The gantry type three-dimensional displacement precision laser cutting machine according to claim 3, characterized in that: The vertical lifting structure includes a lead screw nut fixed on a sliding support, an adjusting lead screw threadedly connected to the lead screw nut and capable of lifting, and a servo motor fixed to the top of the adjusting lead screw; A movable plate is fixed on the motor base of the servo motor, and a hollow reducer and a rotating disk connected to the hollow reducer are fixed on the lower part of the movable plate. The laser cutter is fixed on the rotating disk. The movable plate is also fixed with a vertical linear guide rail parallel to the adjusting screw, and a linear slider is fixed on the sliding support. The vertical linear guide rail moves up and down on the linear slider. The servo motor is connected to the motion controller.

5. The gantry type three-dimensional displacement precision laser cutting machine according to claim 3, characterized in that: A control platform connected to the motion controller is fixed on the gantry frame.

6. The gantry type three-dimensional displacement precision laser cutting machine according to claim 1, characterized in that: The workpiece fixture structure includes a U-shaped fixture base, an n-shaped support base, an angle servo motor, a fixture body, and a rotary motor. The U-shaped clamp seat is fixed on the worktable, and the angle servo motor is fixed on the side of the U-shaped clamp seat; The n-shaped support is set inside the U-shaped clamp seat, and its end is fixedly connected to the main shaft of the angle servo motor; The rotary motor is fixed to the bottom surface of the n-shaped support base, and the clamp body is located on the top surface of the n-shaped support base, with the main shaft of the rotary motor fixedly connected to the middle part of the clamp body. Both the angle servo motor and the rotary motor are connected to the motion controller.

7. The gantry type three-dimensional displacement precision laser cutting machine according to claim 3, characterized in that: The end of the crossbeam and the top surface of the gantry are provided with a first drag chain; A second drag chain is provided between the sliding support and the top surface of the crossbeam.

8. The gantry type three-dimensional displacement precision laser cutting machine according to claim 3, characterized in that: The number of the first track bar and the second track bar is two or three that are parallel to each other.

9. The gantry type three-dimensional displacement precision laser cutting machine according to claim 3, characterized in that: The cross-sections of the first and second track bars are T-shaped or I-shaped.

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