Five-axis three-dimensional machining laser cutting machine

Abstract

The invention relates to the technical field of laser cutting machines, in particular to a five-axis three-dimensional machining laser cutting machine. Comprising a cutting machine body and a positioning part, the positioning part comprises a driving assembly and a plurality of positioning assemblies, and the driving assembly is used for driving the positioning assemblies to move at intervals along a toothed plate of the cutting machine body; the positioning assembly comprises a supporting telescopic rod, a connecting rod and a plurality of positioning strips, the supporting telescopic rod is connected with the driving assembly, the connecting rod is rotationally arranged on the upper side of the supporting telescopic rod, elastic detection columns are arranged at the two ends of the connecting rod, a detection rod is arranged between the two detection columns, and the positioning strips are evenly distributed in the length direction of the detection rod. The positioning strip is rotationally connected with the detection rod, when the edge of the workpiece is positioned through the positioning strip, the lower end of the positioning strip makes contact with the workpiece, the positioning assembly continues to move towards the direction of the workpiece, and the positioning strip making contact with the workpiece and the detection rod are unlocked. And the edge of an irregular workpiece can be accurately detected.

Description

Technical Field

[0001] This invention relates to the field of laser cutting machine technology, specifically a five-axis three-dimensional processing laser cutting machine. Background Technology

[0002] In modern manufacturing, laser cutting has become an important method for machining complex three-dimensional workpieces due to its advantages of high precision, high efficiency, and non-contact processing. Advanced five-axis three-dimensional laser cutting machines can achieve high-quality cutting of complex curved surfaces from multiple angles. However, cutting accuracy depends not only on the dynamic performance of the machine tool itself and the laser control system, but also on the accurate positioning of the workpiece before cutting, which is a crucial step in ensuring the final cutting quality.

[0003] Currently, precise positioning of the edges of irregular or curved workpieces remains a significant challenge in actual production operations. Traditional methods typically rely on manual measurement and calibration using calipers and probes. These methods are inefficient, have poor repeatability, and are difficult to adapt to the needs of automated continuous production. Furthermore, for workpieces with complex edge contours, existing technologies struggle to achieve multi-point synchronous, adaptive contact detection and pose feedback.

[0004] Especially for workpieces with complex three-dimensional contours, their edges are often not standard geometric shapes, and may even have free-form surface features. Existing laser cutting equipment lacks a positioning assistance system that can actively, flexibly, and accurately follow and "sense" the complex edge contours of the workpiece, which may ultimately lead to systematic errors between the cutting path and the design path, resulting in material waste and product defects.

[0005] Therefore, the industry urgently needs a technical solution that can be integrated into the laser cutting equipment itself, enabling rapid and adaptive high-precision contact detection and positioning of various complex edges without damaging the workpiece. Summary of the Invention

[0006] To address the above problems, this invention provides a five-axis three-dimensional machining laser cutting machine.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a five-axis three-dimensional processing laser cutting machine, including a cutting machine body and a positioning part, wherein the positioning part includes a driving component and a plurality of positioning components, and the driving component is used to drive the positioning components to move along the toothed plate interval of the cutting machine body; The positioning assembly includes a supporting telescopic rod, a connecting rod, and several positioning strips. The supporting telescopic rod is connected to a driving assembly. The connecting rod is rotatably positioned on the upper side of the supporting telescopic rod. Flexible detection posts are positioned at both ends of the connecting rod, and a detection rod is positioned between two detection posts. The several positioning strips are evenly distributed along the length of the detection rod. The positioning strips are rotatably connected to the detection rods. When positioning the edge of the workpiece using the positioning strips, the lower end of the positioning strip contacts the workpiece, and the positioning assembly continues to move towards the workpiece. The positioning strip in contact with the workpiece is then released from its locking position with the detection rod.

[0008] As an optimization, the detection column includes a receiving part and a connecting part. The receiving part is located on the side of the connecting part away from the workpiece. The receiving part is fixedly connected to the connecting rod, and the interior of the connecting part and the receiving part are interconnected. The connecting part is made of elastic material. Several detection strips are connected from top to bottom on the side of the connecting part away from the receiving part. There is a detection gap between the other end of the detection strip and the inner wall of the receiving part. The receiving part is equipped with a distance sensor, which is set towards the detection gap. When the connecting part deforms, the other end of the connecting part extends into the detection gap. The distance sensor is used to locate the position where the connecting part is deformed.

[0009] As an optimization, a limiting groove is provided at the end of the detection strip away from the connecting part, and a vertical elastic rope is provided inside the receiving part. The elastic rope is stuck in the limiting groove. When the connecting part deforms, the detection strip pushes the elastic rope to move. When the connecting part separates from the workpiece, the outer side of the connecting part is relieved of pressure, and the elastic rope pushes the detection strip to reset.

[0010] As an optimization, a rotary motor is provided at the upper end of the support telescopic rod, the rotary motor is provided with a fixed seat, the fixed seat is connected to the connecting rod through a spring shaft, and the spring shaft is provided with an angle sensor.

[0011] As an optimization, a connecting sleeve is provided on the upper part of the positioning strip, the connecting sleeve is rotatably connected to the detection rod, at least one end of the detection rod is provided with a detection motor, and a connection circuit is provided between the connecting sleeve and the detection rod. In the initial state, the connection circuit inside the connecting sleeve and the detection rod is connected, and when the positioning strip and the detection rod rotate relative to each other, the connection circuit is disconnected.

[0012] As an optimization, the detection rod is internally configured with several positioning magnetic blocks, and the connecting sleeve is internally configured with a positioning electromagnet. The positioning magnetic blocks and the positioning electromagnet are arranged opposite to each other. When the positioning electromagnet is energized, it magnetically connects the detection rod and the connecting sleeve.

[0013] As an optimization, the drive assembly includes a fixed rod and a plurality of drive screws, the fixed rod is threadedly connected to the drive screws, at least one end of the drive screws is equipped with a drive motor, and the support telescopic rod is vertically fixed to the upper part of the fixed rod; The fixing rod is arranged along the length direction of the cutting machine body, and the drive screw is arranged along the length direction of the toothed plate.

[0014] The beneficial effects of this plan are as follows: By driving multiple positioning components to move, the device can accurately position the edge shape of the workpiece. When the positioning bar contacts the edge of the workpiece with different curvatures, it can adaptively rotate, thus accurately conforming to the workpiece contour through multi-point contact. By setting a positioning component including an elastic detection column, a movable positioning bar, and a detection rod, the device can actively conform to the edge of workpieces with different shapes and curvatures. The rotating connection design of the positioning bar and the detection rod can accurately detect the edge of irregular workpieces. The detection column is equipped with a precision detection mechanism consisting of an elastic connection part, a detection bar, and a distance sensor. It can sense and feedback the position and degree of local deformation of the connection part in real time, realizing quantitative monitoring of the contact state of the workpiece edge and providing a data foundation for high-precision positioning. The support telescopic rod and the connecting rod are connected by a spring shaft equipped with an angle sensor, which can monitor the overall attitude angle change of the positioning component, further enriching the positioning status information. The detection strip, through the cooperation of the limiting groove and the elastic rope, realizes the automatic reset of the detection mechanism, ensuring the reliability and repeatability of the detection action. A connection and control mechanism consisting of a connecting circuit, a positioning magnetic block and a positioning electromagnet is set between the positioning strip and the detection rod. It can not only monitor the relative rotation of the two, but also generate magnetic attraction through the energization of the electromagnet to actively lock the angle of the positioning strip, thereby enhancing the active stability and adjustability of the positioning. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is an isometric view of the present invention.

[0017] Figure 3 This is a top view of the present invention.

[0018] Figure 4 For the present invention Figure 3 A schematic diagram of the AA cross-section structure.

[0019] Figure 5 For the present invention Figure 4 A magnified structural diagram of part D.

[0020] Figure 6This is a schematic diagram of the positioning part of the present invention from the axial side.

[0021] Figure 7 This is a schematic diagram of the positioning component of the present invention from the axial side.

[0022] Figure 8 This is a schematic diagram of the back axis of the positioning component of the present invention.

[0023] Figure 9 This is a top view of the positioning component of the present invention.

[0024] Figure 10 For the present invention Figure 9 A schematic diagram of the BB cross-section structure.

[0025] Figure 11 This is a schematic diagram of the detection strip axis side of the present invention.

[0026] Figure 12 For the present invention Figure 9 A schematic diagram of the CC cross-section structure.

[0027] Figure 13 For the present invention Figure 12 A magnified structural diagram of part E.

[0028] The components are as follows: 1. Cutting machine body; 2. Support telescopic rod; 3. Connecting rod; 4. Positioning strip; 5. Detection rod; 6. Receiving part; 7. Connecting part; 8. Detection strip; 9. Distance sensor; 10. Detection interval; 11. Elastic rope; 12. Rotary motor; 13. Angle sensor; 14. Connecting sleeve; 15. Detection motor; 16. Connecting circuit; 17. Positioning magnetic block; 18. Positioning electromagnet; 19. Fixing rod; 20. Drive screw; 21. Drive motor. Detailed Implementation

[0029] like Figures 1-13 As shown, a five-axis three-dimensional machining laser cutting machine includes a cutting machine body 1 and a positioning part. The positioning part includes a driving component and several positioning components. The driving component is used to drive the positioning components to move along the toothed plate interval of the cutting machine body 1. The positioning assembly includes a supporting telescopic rod 2, a connecting rod 3, and several positioning strips 4. The supporting telescopic rod 2 is connected to the driving assembly. The connecting rod 3 is rotatably positioned on the upper side of the supporting telescopic rod 2. Both ends of the connecting rod 3 are equipped with elastic detection posts. A detection rod 5 is positioned between two detection posts. Several positioning strips 4 are evenly distributed along the length of the detection rod 5. The positioning strips 4 are rotatably connected to the detection rod 5. When positioning the edge of the workpiece through the positioning strips 4, the lower end of the positioning strip 4 contacts the workpiece. The positioning assembly continues to move towards the workpiece, and the positioning strip 4 in contact with the workpiece is released from locking with the detection rod 5.

[0030] The main body 1 of the cutting machine is a three-dimensional laser cutting machine body with five-axis linkage function, carrying the laser generator and motion system, providing high-degree-of-freedom processing capabilities. The positioning part is an independently integrated module of this invention, used for "sensing" rather than "fixing," that is, actively and accurately detecting the spatial position of the edge to be cut on the workpiece before any cutting operation. The positioning part consists of a drive component and several positioning components. The drive component is responsible for driving the positioning components to perform macroscopic two-dimensional planar motion in the initial position of the cutting area to approach different detection points on both sides of the workpiece; while the positioning components are responsible for performing microscopic, adaptive contact detection.

[0031] The support telescopic rod 2 is typically made of high-strength aluminum alloy or carbon fiber composite material, with a built-in electric or pneumatic telescopic mechanism (such as an electric push rod, optional model LINAKLA36). Its function is to adjust the overall working height of the positioning probe to adapt to worktables or workpieces of different thicknesses. The connecting rod 3 is connected to the top of the support telescopic rod 2 via a rotating joint, allowing the entire probe head to deflect in the horizontal plane. Several positioning strips 4 are end actuators that make flexible contact directly with the edge of the workpiece. Their material combines a certain rigidity and wear resistance; they can be POM or chrome-plated alloy steel. They are evenly arranged along the detection rod 5 to form a "detection line." The detection rod 5 serves as the mounting base for the positioning strips 4, and its internal sensing and control circuitry is integrated. The entire detection process is as follows: multiple positioning strips 4 actively approach the edge of the workpiece under the drive assembly, and "trace" the contour of the edge through their own rotation and the deformation of the detection column.

[0032] In use, the support telescopic rod 2 is shortened so that the entire positioning component is lower than the bottom surface of the toothed plate, allowing the positioning component to move along the drive component to the other side of the workpiece, thereby enabling positioning and monitoring of the contours on both sides of the workpiece.

[0033] like Figure 8 and Figure 10 As shown, the detection column includes a receiving part 6 and a connecting part 7. The receiving part 6 is located on the side of the connecting part 7 away from the workpiece. The receiving part 6 is fixedly connected to the connecting rod 3, and the connecting part 7 is in communication with the interior of the receiving part 6. The connecting part 7 is made of elastic material. Several detection strips 8 are connected from top to bottom on the side of the connecting part 7 away from the receiving part 6. The other end of the detection strip 8 is left with a detection interval 10 between it and the inner wall of the receiving part 6. The receiving part 6 is equipped with a distance sensor 9, which is positioned towards the detection interval 10. When the connecting part 7 deforms, the other end of the connecting part 7 extends into the detection interval 10, and the distance sensor 9 locates the position where the connecting part 7 deforms.

[0034] The receiving part 6 is a rigid structure (such as aluminum alloy) used to mount the sensor and internal mechanism; the connecting part 7 is made of highly elastic, fatigue-resistant silicone rubber or polyurethane material, serving as a buffer interface for contact with the workpiece. The width of the receiving part 6 gradually narrows on the side away from the connecting part 7, so that the detection strip 8 can be guided by the inner wall of the receiving part 6 and move laterally stably.

[0035] When the positioning component moves, causing the connecting part 7 to contact the edge of the workpiece, the pressure at the contact point causes the connecting part 7 to undergo an inward elastic deformation (towards the receiving part 6). This deformation pushes the connected detection strip 8 (a rigid rod or rigid plate) into the detection interval 10. The distance sensor 9 (which can be a high-precision miniature laser displacement sensor, such as the Keyence LK-H series, or a capacitive displacement sensor) monitors its distance from the end of the nearest detection strip 8 in real time. Since each detection strip 8 has a fixed position in the vertical direction, and the initial distance between its end and the sensor is known, changes in the sensor reading can not only pinpoint which detection strip 8 at which height was pushed (i.e., the position of the contact point in the vertical direction of the connecting part 7), but also quantify the contact force or degree of contact through the deformation. This method achieves two-dimensional (vertical position + deformation depth) information acquisition of the single-point contact position and state.

[0036] like Figure 10 and Figure 11 As shown, a limiting groove is provided at the end of the detection strip 8 away from the connecting part 7, and a vertical elastic rope 11 is provided inside the receiving part 6. The elastic rope 11 is stuck in the limiting groove. When the connecting part 7 is deformed, the detection strip 8 pushes the elastic rope 11 to move. When the connecting part 7 is separated from the workpiece, the outer side of the connecting part 7 is released, and the elastic rope 11 pushes the detection strip 8 to reset.

[0037] The limiting groove at the end of the detection strip 8 and the elastic rope 11 vertically arranged within the receiving part 6 work together. When the connecting part 7 is deformed under pressure, the detection strip 8 compresses the elastic rope 11; when the contact pressure is removed (the positioning component leaves the workpiece), the restoring force of the elastic rope 11 pushes the detection strip 8 back to its initial position, thereby causing the elastic connecting part 7 to return to its original shape. This ensures the independence of each detection action, avoids measurement errors caused by residual deformation, and guarantees the repeatability and long lifespan of the system in continuous, rapid detection. The detection strip 8 is fixedly or detachably connected to the inner wall of the connecting part 7.

[0038] like Figure 8 As shown, a rotary motor 12 is provided at the upper end of the support telescopic rod 2. The rotary motor 12 is provided with a fixed seat. The fixed seat is connected to the connecting rod 3 through a spring shaft. The spring shaft is provided with an angle sensor 13.

[0039] When the detection column contacts the curved workpiece, the connecting rod 3 rotates with the movement of the positioning assembly, and the rotation angle between them is recorded by the angle sensor 13. When the positioning assembly separates from the workpiece, the positioning assembly can reset under the action of the spring shaft.

[0040] The rotary motor 12 supporting the upper end of the telescopic rod 2 can be a servo motor, such as the Yaskawa SGM7J, used to actively adjust the horizontal angle of the connecting rod 3 before or during detection. A spring-loaded shaft (containing an internal torsion spring) allows the connecting rod 3 to passively and flexibly deflect when subjected to lateral forces from the workpiece edge, better conforming to the edge direction. The angle sensor 13 can be a high-precision absolute encoder or potentiometer, used to measure this deflection angle in real time. This angle data, combined with the position information of the drive components, can calculate the tangent or normal direction of the local contour of the workpiece edge, providing key angle parameters for subsequent laser cutting head path planning.

[0041] like Figure 8 , Figure 12 and Figure 13 As shown, a connecting sleeve 14 is disposed on the upper part of the positioning strip 4. The connecting sleeve 14 is rotatably connected to the detection rod 5. At least one end of the detection rod 5 is provided with a detection motor 15. A connecting circuit 16 is disposed between the connecting sleeve 14 and the detection rod 5. In the initial state, the connecting sleeve 14 is connected to the connecting circuit 16 inside the detection rod 5. When the positioning strip 4 and the detection rod 5 rotate relative to each other, the connecting circuit 16 is disconnected.

[0042] Each positioning bar 4 forms a rotating pair with the detection rod 5 via the upper connecting sleeve 14. The detection motor 15 can be a stepper motor or a micro servo motor, used to drive the detection rod 5 to rotate as a whole, thereby aligning all the positioning bars 4 at their initial angles.

[0043] The connection circuit 16 is a status monitoring circuit. Initially, the connecting sleeve 14 is connected to the electrical contacts on the detection rod 5, and the circuit is open. When a positioning bar 4 contacts an irregular edge and is forced to rotate, the connecting sleeve 14 rotates accordingly, causing the electrical contacts to separate and the connection circuit 16 to disconnect. By monitoring the on / off status of each circuit, the control system can know in real time which positioning bars 4 have rotated and the approximate timing of their rotation.

[0044] like Figure 13 As shown, the detection rod 5 is internally equipped with several positioning magnetic blocks 17, and the connecting sleeve 14 is internally equipped with a positioning electromagnet 18. The positioning magnetic blocks 17 and the positioning electromagnet 18 are arranged opposite to each other. When the positioning electromagnet 18 is energized, it magnetically connects the detection rod 5 and the connecting sleeve 14.

[0045] The positioning magnetic block 17 and the positioning electromagnet 18 constitute an active locking mechanism. In the detection mode, the electromagnet 18 is energized, and the two are locked together by magnetic attraction, so that they can remain relatively fixed. At this time, the lower end of the positioning strip 4 is tilted towards the workpiece. When the positioning strip 4 contacts the workpiece, the positioning strip 4 overcomes the magnetic attraction and contacts and locks with the detection rod 5, and relative rotation occurs.

[0046] like Figure 1 and Figure 6 As shown, the drive assembly includes a fixed rod 19 and a plurality of drive screws 20. The fixed rod 19 is threadedly connected to the drive screws 20. At least one end of the drive screw 20 is equipped with a drive motor 21. The support telescopic rod 2 is vertically fixed to the upper part of the fixed rod 19. The fixing rod 19 is arranged along the length direction of the cutting machine body 1, and the driving screw 20 is arranged along the length direction of the toothed plate.

[0047] The drive assembly is responsible for enabling precise movement of the positioning components within the machining area. The fixed rod 19 is arranged along the X-axis of the machine tool (the length direction of the cutting machine body 1) and is made of high-rigidity rectangular steel or alloy profile. The drive screw 20 is arranged along the Y-axis of the machine tool (the length direction of the gear plate) and is typically a precision ball screw pair. The drive motor 21 (which can be a servo motor) drives the screw 20 to rotate. The support telescopic rod 2 is fixed to the fixed rod 19, and the fixed rod 19 is threadedly connected to the drive screw 20 via a nut. Simultaneously, to ensure stable positioning of the components, an auxiliary telescopic rod can be provided. This auxiliary telescopic rod is a non-powered telescopic rod and is vertically parallel to the support telescopic rod 2, improving the stability of the positioning components. Therefore, the rotation of the drive motor 21 (Y-axis) drives the fixed rod 19 and all positioning components on it to move along the Y-axis; while the entire drive assembly (including the fixed rod 19 and the drive screw 20) can be driven by the X-axis motion platform of the machine tool body, achieving X-axis movement. By linking the X and Y axes, any positioning component can be precisely driven to the front of the detection point on the edge of the workpiece.

[0048] How to use: Start the five-axis laser cutting machine and its control system. Reset all drive motors 21, rotary motors 12, and detection motors 15 to their initial zero positions. Raise the support telescopic rod 2 to its non-working height. De-energize all positioning electromagnets 18, ensuring that each positioning bar 4 and detection rod 5 are in a freely rotatable state. Verify that all connection circuits 16 are connected and that all sensor signals are normal.

[0049] The workpiece to be cut is fixed on the machine tool table (tooth plate) using an independent conventional clamping device; The support telescopic rod 2 extends, causing the positioning component to rise to the working height. At the same time, the lower part of the positioning bar 4 rotates upward to an inclined state. The drive motor 21 drives the drive screw 20 to rotate, causing the fixed rod 19 and the positioning component above it to move along the toothed plate spacing direction (X-axis).

[0050] The positioning component moves along the toothed plate at intervals to the workpiece. When the positioning strip 4 contacts the workpiece, the workpiece prevents the positioning strip 4 from moving further, causing the positioning strip 4 to be unlocked from the detection rod 5 under the action of resistance. At the same time, the connecting circuit 16 is disconnected. The system judges the edge shape of the workpiece according to the position and timing of the circuit disconnection. Different positioning strips 4 represent the Y-axis direction of the cutting machine body 1. The edge contour of the workpiece can be obtained according to the timing of the state changes of different positioning strips 4.

[0051] As the positioning component continues to move, the detection column contacts and squeezes the edge of the workpiece. The workpiece squeezes the connecting part 7, causing the connecting part 7 to deform and push the detection strip 8 to move. The distance sensor 9 monitors the change of the detection interval 10 in real time to determine which vertical position of the detection strip 8 is pushed and its deformation, thereby obtaining the local (vertical Z direction) coordinates and contact pressure information of the contact point, and thus determining the height of the workpiece edge. After inspecting one side of the workpiece, lower the height of the support telescopic rod 2 so that the positioning component is lower than the bottom surface of the toothed plate. Then, drive the positioning component to move to the other side of the workpiece and inspect the other side of the workpiece using the same steps.

[0052] Angle sensor 13 provides real-time feedback on the deflection angle of connecting rod 3 relative to the fixed base, reflecting the tangent direction of the edge. The status (on / off) of connecting circuit 16 provides feedback on whether and when the positioning bar 4 has rotated.

[0053] The main control system, through its built-in kinematics and coordinate transformation algorithms, combined with the macroscopic X / Y / Z position, local deformation depth, and deflection angle of connecting rod 3, accurately calculates the three-dimensional spatial coordinates (X, Y, Z) of the current contact point in the global coordinate system of the worktable, as well as the normal or tangent direction vector of the workpiece edge at that point. This high-precision edge feature point coordinates and attitude data are then stored in the system.

[0054] Based on the above, the main control system will obtain a series of high-density three-dimensional point clouds, which can accurately describe the edge contour and spatial posture of the workpiece after actual clamping. Based on the actual position and contour, the main control system can compare this with the preset cutting path and make compensation corrections to obtain more accurate machining code. The selection of the system and code can be based on the operator's usage habits and will not be elaborated further here.

[0055] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the product form and style of the above-described specific embodiments. Any five-axis three-dimensional processing laser cutting machine that conforms to the claims of the present invention, and any appropriate changes or modifications made thereto by those skilled in the art, shall fall within the patent protection scope of the present invention.

Claims

1. A five-axis three-dimensional machining laser cutting machine, comprising a cutting machine body (1) and a positioning part, characterized in that: The positioning part includes a driving component and several positioning components. The driving component is used to drive the positioning components to move along the toothed plate interval of the cutting machine body (1). The positioning component includes a supporting telescopic rod (2), a connecting rod (3), and several positioning strips (4). The supporting telescopic rod (2) is connected to the driving component. The connecting rod (3) is rotatably positioned on the upper side of the supporting telescopic rod (2). The two ends of the connecting rod (3) are provided with elastic detection posts. A detection rod (5) is provided between two detection posts. Several positioning strips (4) are evenly distributed along the length direction of the detection rod (5). The positioning strips (4) are rotatably connected to the detection rod (5). When the workpiece edge is positioned by the positioning strips (4), the lower end of the positioning strips (4) contacts the workpiece. The positioning component continues to move towards the workpiece, and the positioning strips (4) in contact with the workpiece are unlocked from the detection rods (5).

2. The five-axis three-dimensional machining laser cutting machine according to claim 1, characterized in that: The detection column includes a receiving part (6) and a connecting part (7). The receiving part (6) is located on the side of the connecting part (7) away from the workpiece. The receiving part (6) is fixedly connected to the connecting rod (3). The connecting part (7) and the interior of the receiving part (6) are connected. The connecting part (7) is made of elastic material. Several detection strips (8) are connected from top to bottom on the side of the connecting part (7) away from the receiving part (6). A detection interval (10) is left between the other end of the detection strip (8) and the inner wall of the receiving part (6). The receiving part (6) is equipped with a distance sensor (9). The distance sensor (9) is set towards the detection interval (10). When the connecting part (7) deforms, the other end of the connecting part (7) extends into the detection interval (10). The distance sensor (9) locates the position where the connecting part (7) deforms.

3. A five-axis three-dimensional machining laser cutting machine according to claim 2, characterized in that: The detection strip (8) has a limiting groove at one end away from the connecting part (7). A vertical elastic rope (11) is provided inside the receiving part (6). The elastic rope (11) is stuck in the limiting groove. When the connecting part (7) is deformed, the detection strip (8) pushes the elastic rope (11) to move. When the connecting part (7) is separated from the workpiece, the outer side of the connecting part (7) is released, and the elastic rope (11) pushes the detection strip (8) to reset.

4. A five-axis three-dimensional machining laser cutting machine according to claim 1, characterized in that: The upper end of the support telescopic rod (2) is equipped with a rotary motor (12), the rotary motor (12) is equipped with a fixed seat, the fixed seat is connected to the connecting rod (3) through a spring shaft, and the spring shaft is equipped with an angle sensor (13).

5. A five-axis three-dimensional machining laser cutting machine according to claim 1, characterized in that: The upper part of the positioning strip (4) is provided with a connecting sleeve (14), which is rotatably connected to the detection rod (5). At least one end of the detection rod (5) is provided with a detection motor (15). A connection circuit (16) is provided between the connecting sleeve (14) and the detection rod (5). In the initial state, the connection circuit (16) inside the connecting sleeve (14) and the detection rod (5) is connected. When the positioning strip (4) and the detection rod (5) rotate relative to each other, the connection circuit (16) is disconnected.

6. A five-axis three-dimensional machining laser cutting machine according to claim 5, characterized in that: The detection rod (5) is equipped with several positioning magnetic blocks (17), and the connecting sleeve (14) is equipped with a positioning electromagnet (18). The positioning magnetic blocks (17) and the positioning electromagnet (18) are arranged opposite to each other. When the positioning electromagnet (18) is energized, it magnetically connects the detection rod (5) and the connecting sleeve (14).

7. A five-axis three-dimensional machining laser cutting machine according to claim 1, characterized in that: The drive assembly includes a fixed rod (19) and a plurality of drive screws (20). The fixed rod (19) is threadedly connected to the drive screws (20). At least one end of the drive screw (20) is equipped with a drive motor (21). The support telescopic rod (2) is vertically fixed to the upper part of the fixed rod (19). The fixing rod (19) is arranged along the length direction of the cutting machine body (1), and the driving screw (20) is arranged along the length direction of the toothed plate.

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