Optical fiber laser cutting machine with positioning mechanism

Abstract

This invention discloses a fiber laser cutting machine with a positioning mechanism, belonging to the technical field of fiber laser cutting machines. It includes: a frame; a moving mechanism on the top of the frame, comprising a crossbeam, a moving seat, a lifting plate, and a first electric push rod; a laser cutter fixedly mounted on the bottom of the lifting plate; a driving mechanism at one end of the crossbeam; positioning mechanisms on both sides of the inner side of the frame, comprising a servo motor, a lead screw, a guide rail, an adjusting seat, a second electric push rod, and a clamping plate; and a support mechanism on the top inner side of the frame. This invention, through a multi-dimensional adjustment structure employing the cooperation of the driving mechanism and the moving mechanism, enables precise all-around adjustment of the laser cutter's horizontal, vertical, and overall height. The gear and rack meshing transmission method ensures the stability and accuracy of the position adjustment.

Description

Technical Field

[0001] This invention relates to the field of fiber laser cutting machine technology, and in particular to a fiber laser cutting machine with a positioning mechanism. Background Technology

[0002] Fiber laser cutting machines are core equipment in the field of precision machining. With their advantages of high cutting accuracy, small heat-affected zone, and high processing efficiency, they are widely used in sheet metal processing, hardware manufacturing, and the processing of irregularly shaped workpieces, among many other industries. Currently, most mainstream fiber laser cutting machines on the market are equipped with basic workpiece clamping and positioning structures and fixed support tables, enabling them to perform routine cutting operations on standardized and regular workpieces, meeting basic industrial batch processing needs. Existing equipment has a mature structure and simple operation procedures, making it the mainstream equipment type for precision cutting of metal workpieces at present, with applications covering most conventional machining fields.

[0003] Existing fiber laser cutting machines mostly employ fixed-space or simple manual adjustment structures for clamping and positioning. This results in poor adjustment flexibility, making it difficult to adapt to the precise positioning requirements of workpieces with different specifications and irregular shapes. Furthermore, they cannot sense clamping force in real time, easily leading to workpiece loosening, displacement, or excessive compression and deformation during operation. Simultaneously, the workpiece support structure is often fixed, unable to adaptively adjust its shape according to the workpiece's contour. This results in numerous unsupported areas when processing irregularly shaped or large workpieces, causing workpiece vibration and deformation during cutting. In addition, traditional equipment suffers from poor linkage accuracy in cutting head position adjustment and insufficient stability in multi-directional adjustments, ultimately leading to poor workpiece cutting accuracy, difficulty in improving yield, and an inability to meet the processing needs of high-precision, multi-type workpieces. Therefore, we propose a fiber laser cutting machine with a positioning mechanism to solve this problem. Summary of the Invention

[0004] The purpose of this invention is to provide a fiber laser cutting machine with a positioning mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A fiber laser cutting machine with a positioning mechanism includes: a frame, a moving mechanism on the top of the frame, the moving mechanism including: a crossbeam, a moving seat, a lifting plate and a first electric push rod, a laser cutter fixedly installed at the bottom of the lifting plate, a driving mechanism at one end of the crossbeam, positioning mechanisms on both sides of the inside of the frame, the positioning mechanism including: a servo motor, a lead screw, a guide rail, an adjusting seat, a second electric push rod and a clamping plate, and a support mechanism on the top of the inside of the frame.

[0006] Preferably, the support mechanism includes: a base plate, a support net, a first lifting frame and a second lifting frame. The base plate is fixedly installed inside the frame. A third electric push rod and a fourth electric push rod are fixedly installed on the front and rear sides of the base plate, respectively. The output end of the third electric push rod is fixedly connected to the first lifting frame. A first round rod is fixedly installed on both sides of the first lifting frame. Side plates are fixedly installed on both sides of the bottom of the support net. The first round rod is rotatably installed in the corresponding side plate. The output end of the fourth electric push rod is fixedly connected to the second lifting frame. The second lifting frame has a second round rod fixedly installed on both sides. A square hole is opened on one side of the side plate, and a square plate is slidably installed in the square hole. The second round rod is rotatably installed in the corresponding square plate.

[0007] Preferably, the movable seat is slidably sleeved on the outside of the crossbeam, the first electric push rod is fixedly installed on the front side of the movable seat, the lifting plate is fixedly installed on the output end of the first electric push rod, a flexible wire frame is provided on the top of the lifting plate, a rotary motor is fixedly installed on the rear side of the movable seat, a first gear is fixedly installed on the output shaft of the rotary motor, and a first rack is fixedly installed on the top of the crossbeam, with the first rack meshing with the first gear.

[0008] Preferably, the driving mechanism includes: a mounting frame, a drive motor, a second gear, a second rack, and a fixed beam. The second rack is fixedly mounted on the top of the fixed beam. The second gear meshes with the second rack. The second gear is fixedly mounted on the output shaft of the drive motor. The drive motor is fixedly mounted inside the mounting frame. A guide rail is fixedly mounted on one side of the fixed beam. The mounting frame is slidably sleeved on the outside of the guide rail. The mounting frame is fixedly installed at one end of the crossbeam, and the fixing beam is fixedly installed on the outside of the frame.

[0009] Preferably, the servo motor is fixedly mounted on the rear side of the frame, the lead screw is fixedly mounted on the output shaft of the servo motor, the adjusting seat is threaded onto the outside of the lead screw, the second electric push rod is fixedly mounted inside the adjusting seat, a pressure sensor is fixedly mounted on one side of the clamping plate, and the output end of the second electric push rod is fixedly connected to the pressure sensor.

[0010] Preferably, a guide rod is fixedly installed on one side of the clamping plate, the guide rod is slidably installed in the adjusting seat, and sliding grooves are provided on both inner walls of the frame. The adjusting seat is slidably installed in the corresponding sliding groove, and a longitudinal rail is fixedly installed on the side wall of the sliding groove. The adjusting seat is slidably sleeved on the outside of the longitudinal rail.

[0011] Preferably, slide rails are fixedly installed on both sides of the top of the frame, and the crossbeam is slidably sleeved on the outside of the slide rails.

[0012] The beneficial effects of this invention are as follows: 1. The fiber laser cutting machine with a positioning mechanism described in this invention, through the setting of a double-sided adjustable positioning clamping structure, and relying on servo-driven lead screw transmission to achieve flexible adjustment of the clamping distance, can adapt to workpieces of different specifications and sizes, greatly expanding the processing adaptability range of the equipment. During the clamping operation, the clamping pressure can be monitored in real time, and the clamping force can be precisely controlled. This effectively avoids workpiece displacement and misalignment during the cutting operation, ensuring the stability of the processing benchmark and eliminating cutting deviations caused by workpiece loosening. It also avoids defects such as workpiece deformation due to excessive clamping force, achieving stable and accurate clamping and positioning of various workpieces, laying a good foundation for high-precision cutting processing.

[0013] 2. The fiber laser cutting machine with a positioning mechanism described in this invention, through a multi-dimensional adjustment structure employing a drive mechanism and a moving mechanism working together, enables precise all-around adjustment of the laser cutter's horizontal, vertical, and longitudinal height. The gear and rack meshing transmission method ensures the stability and accuracy of position adjustment, while the sliding limit structure of the slide rail and guide rail effectively reduces displacement deviation during adjustment. Simultaneously, the vertical lifting structure, combined with a flexible wire frame, stably adjusts the cutting height, ensuring the safety and stability of the lifting adjustment process. This multi-directional precise adjustment mode can meet the processing position requirements of different cutting processes and workpiece shapes, effectively improving the accuracy of the cutting position.

[0014] 3. The fiber laser cutting machine with a positioning mechanism described in this invention, equipped with an adaptively adjustable support mechanism, utilizes two independent electric push rods to drive two sets of lifting frames, and employs a linkage structure of rotating round rods and sliding square plates to achieve multi-angle and multi-height adaptive fine-tuning of the support mesh. It can fully conform to the bottom of the workpiece according to its shape and effectively support the suspended parts of the workpiece, overcoming the limitation of traditional fixed support structures that cannot adapt to irregularly shaped workpieces. It provides uniform and stable support force to the workpiece throughout the entire process, effectively suppressing workpiece vibration and deformation during cutting, and continuously ensuring the structural stability of the workpiece during the cutting process.

[0015] 4. The fiber laser cutting machine with a positioning mechanism described in this invention, through the coordinated operation of the positioning mechanism, the moving drive mechanism, and the support mechanism, constructs a high-precision and high-stability laser cutting processing system, comprehensively optimizing the overall processing performance of the equipment. Each mechanism has a clear division of labor and strong interoperability. The positioning stage ensures workpiece clamping accuracy, the adjustment stage ensures precise cutting point positioning, and the support stage prevents workpiece deformation during processing, thus avoiding processing defects from multiple dimensions. The equipment can simultaneously adapt to the cutting and processing needs of both regular and irregularly shaped workpieces, effectively improving the overall cutting accuracy and finished product yield, and enhancing the market adaptability and practicality of the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a fiber laser cutting machine with a positioning mechanism proposed in this invention. Figure 2 This is a cross-sectional structural diagram of a fiber laser cutting machine with a positioning mechanism proposed in this invention. Figure 3 for Figure 2 A magnified view of part A in the middle; Figure 4 This is a three-dimensional structural diagram of the support mechanism proposed in this invention; Figure 5 for Figure 4 A magnified view of part B in the middle section; Figure 6 This is a cross-sectional structural schematic diagram of the moving mechanism proposed in this invention; Figure 7 This is a cross-sectional structural schematic diagram of the driving mechanism proposed in this invention; Figure 8 This is a cross-sectional three-dimensional structural diagram of the positioning mechanism proposed in this invention.

[0017] In the diagram: 1. Frame; 2. Moving mechanism; 201. Crossbeam; 202. Moving seat; 203. First electric push rod; 204. Lifting plate; 205. Laser cutter; 206. Flexible wire frame; 207. Rotary motor; 208. First gear; 209. First rack; 3. Slide rail; 4. Drive mechanism; 401. Mounting frame; 402. Drive motor; 403. Second gear; 404. Second rack; 405. Fixed beam; 406. Guide rail; 5. Positioning mechanism; 501 502. Servo motor; 503. Lead screw; 504. Longitudinal rail; 505. Adjustment seat; 506. Clamping plate; 507. Pressure sensor; 508. Guide rod; 509. Second electric push rod; 600. Support mechanism; 601. Base plate; 602. Support net; 603. Side plate; 604. Third electric push rod; 605. First lifting frame; 606. First round rod; 607. Fourth electric push rod; 608. Second lifting frame; 609. Second round rod; 610. Square plate; 611. Square hole. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figures 1-8A fiber laser cutting machine with a positioning mechanism includes: a frame 1, a moving mechanism 2 on the top of the frame 1, the moving mechanism 2 including: a crossbeam 201, a moving seat 202, a lifting plate 204 and a first electric push rod 203, a laser cutter 205 fixedly installed at the bottom of the lifting plate 204, a driving mechanism 4 at one end of the crossbeam 201, positioning mechanisms 5 on both sides of the inside of the frame 1, the positioning mechanism 5 including: a servo motor 501, a lead screw 502, a guide rail 406, an adjusting seat 504, a second electric push rod 508 and a clamping plate 505, and a support mechanism 6 on the top of the inside of the frame 1.

[0020] The frame 1 serves as the overall load-bearing base of the equipment, integrally cast from high-strength ductile iron. Its dense, uniform, and extremely rigid structure provides excellent shock resistance, compressive strength, and deformation resistance, effectively mitigating mechanical vibrations and impacts generated during laser cutting. This prevents frame deformation and swaying, providing a stable reference for the installation and operation of all functional mechanisms, ensuring overall processing accuracy and operational stability from a fundamental perspective. Furthermore, the material is rust-resistant and wear-resistant, adaptable to long-term industrial environments, and extends the overall service life of the equipment. The moving mechanism 2, as the core displacement adjustment component of the laser cutter 205, is primarily used to achieve multi-dimensional precise displacement control of the laser cutter 205, flexibly adapting to the cutting needs of workpieces of different sizes and positions, effectively improving the equipment's processing flexibility. The symmetrically arranged positioning mechanism 5 can achieve adaptive and precise clamping and positioning for workpieces of different specifications, overcoming the shortcomings of traditional laser cutting machine positioning fixtures—single-purpose, poorly versatile, and low positioning accuracy—ensuring no workpiece offset during processing. The support mechanism 6 can provide all-round adaptive support to the bottom of the workpiece, specifically addressing industry pain points such as workpiece shaking, deformation, and edge chipping during suspended cutting.

[0021] In this embodiment, the support mechanism 6 includes: a base plate 601, a support net 602, a first lifting frame 605, and a second lifting frame 608. The base plate 601 is fixedly installed inside the frame 1. A third electric push rod 604 and a fourth electric push rod 607 are fixedly installed on the front and rear sides of the base plate 601, respectively. The output end of the third electric push rod 604 is fixedly connected to the first lifting frame 605. A first round rod 606 is fixedly installed on both sides of the first lifting frame 605. Side plates 603 are fixedly installed on both sides of the bottom of the support net 602. The first round rod 606 is rotatably installed in the corresponding side plate 603. The base plate 601 is made of thickened Q235 steel plate, cut and welded. The plate surface is leveled, ground, and coated with anti-rust paint, resulting in a flat, stable structure with strong load-bearing capacity. It can stably support the load of all the supporting components above, and is not prone to bending or deformation under long-term heavy load. At the same time, the anti-rust coating can isolate processing dust, metal shavings, and moisture corrosion, preventing the base plate from rusting and failing. The support net 602 is woven from high-toughness high-manganese alloy steel. The net structure has high strength, good elasticity, wear resistance, and is not easily deformed. The hollow mesh structure can fully fit the bottom of the workpiece to achieve uniform support without obstructing the laser cutting path. At the same time, it allows waste and debris generated during cutting to fall off naturally, keeping the processing area clean and reducing the impact of waste accumulation on cutting accuracy. The first lifting frame 605 and the second lifting frame 608 are both made of hard anodized aluminum alloy, which is lightweight, has sufficient structural rigidity, sensitive lifting response, and smooth operation. They can be precisely adjusted in conjunction with electric push rods to complete height adjustment operations. The first round rod 606 is precision-machined from hardened stainless steel, featuring a high surface finish, low coefficient of friction, wear resistance, and rust prevention. It allows for flexible rotation and effectively ensures the smoothness and stability of the angle adjustment of the support net 602. The side plate 603 is integrally stamped from steel plate, possessing high structural hardness and toughness, and is not easily bent or deformed. It provides robust installation support for the rotating connection structure of the support net 602, ensuring transmission accuracy.

[0022] The output end of the fourth electric push rod 607 is fixedly connected to the second lifting frame 608. The second round rod 609 is fixedly installed on both sides of the second lifting frame 608. A square hole 611 is opened on one side of the side plate 603. A square plate 610 is slidably installed in the square hole 611. The second round rod 609 is rotatably installed in the corresponding square plate 610.

[0023] The second round rod 609 and the first round rod 606 are made of the same hardened stainless steel, possessing high strength, high wear resistance, and rust resistance. Long-term reciprocating rotation will not cause wear, loosening, jamming, or other problems, resulting in a long service life. The square plate 610 is made of precision wear-resistant alloy steel, with extremely high dimensional accuracy. The clearance between the square plate 610 and the inner wall of the square hole 611 is controlled at the micron level, ensuring smooth sliding without shaking or deviation. Simultaneously, the square plate 610 can rotate and adapt to the angle changes of the support net 602 in conjunction with the second round rod 609. Through this dual composite structure of sliding and rotation, the support net 602 achieves adaptive fine-tuning at multiple angles and in multiple postures, significantly improving the adaptability and fit of the support mechanism 6.

[0024] In this embodiment, the movable seat 202 is slidably sleeved on the outside of the crossbeam 201. The first electric push rod 203 is fixedly installed on the front side of the movable seat 202. The lifting plate 204 is fixedly installed on the output end of the first electric push rod 203. A flexible wire frame 206 is provided on the top of the lifting plate 204. A rotary motor 207 is fixedly installed on the rear side of the movable seat 202. A first gear 208 is fixedly installed on the output shaft of the rotary motor 207. A first rack 209 is fixedly installed on the top of the crossbeam 201. The first rack 209 and the first gear 208 mesh with each other.

[0025] The crossbeam 201 is made of aerospace-grade high-strength aluminum alloy profile, treated with an aging hardening process, resulting in strong structural rigidity and light weight. It does not undergo elastic deformation during high-speed sliding. The surface is precision-ground, resulting in extremely low sliding resistance, effectively ensuring the smoothness and accuracy of the sliding seat 202. The sliding seat 202 adopts a precision cast steel one-piece structure, with its internal sliding cavity precision-machined, achieving a high degree of fit with the crossbeam 201 and uniform sliding gap, effectively preventing operational deviation and shaking, and adapting to high-frequency, high-precision reciprocating sliding operations. The first electric push rod 203 is a high-precision servo electric push rod with micron-level telescopic positioning accuracy, smooth operation, and uniform thrust. It can precisely control the vertical lifting height of the lifting plate 204, flexibly adapting to the laser cutting focal length adjustment requirements of workpieces of different thicknesses. The lifting plate 204 is made of high-strength alloy steel plate, with high surface flatness and good load-bearing stability, firmly fixing the laser cutter 205 and preventing vibration and deviation of the laser cutter 205 during cutting operations, ensuring accurate cutting trajectory. The flexible wire frame 206 is composed of high-strength flame-retardant flexible cables, possessing excellent tensile toughness and protective performance. It can freely extend and retract with the lifting action of the lifting plate 204, neatly storing the internal wiring and effectively preventing problems such as wire breakage, wear and aging, and tangling, significantly improving the safety and stability of equipment operation. The rotary motor 207 is a closed-loop servo rotary motor with fast start / stop response, precise speed control, and low operating noise, enabling high-precision power output. Both the first gear 208 and the first rack 209 are made of high-frequency quenched alloy steel and precision ground, resulting in high tooth profile accuracy, uniform meshing clearance, and extremely strong wear resistance. This enables backlash-free precise meshing transmission, effectively reducing transmission errors and ensuring high precision in the longitudinal displacement adjustment of the moving seat 202.

[0026] In this embodiment, the drive mechanism 4 includes: a mounting frame 401, a drive motor 402, a second gear 403, a second rack 404, and a fixed beam 405. The second rack 404 is fixedly mounted on the top of the fixed beam 405. The second gear 403 meshes with the second rack 404. The second gear 403 is fixedly mounted on the output shaft of the drive motor 402. The drive motor 402 is fixedly mounted inside the mounting frame 401. A guide rail 406 is fixedly mounted on one side of the fixed beam 405. The mounting frame 401 is slidably sleeved on the outside of the guide rail 406. The drive mechanism 4 is the core power structure for achieving precise lateral displacement of the crossbeam 201. It is responsible for adjusting the lateral position of the laser cutter 205 and, in conjunction with the moving mechanism 2, enables omnidirectional planar cutting operations. The mounting frame 401 is made of lightweight, high-strength steel plate, bent and welded, with a compact structure and sufficient rigidity. It can stably wrap and fix the drive motor 402, effectively isolating external processing dust and mechanical vibration from interfering with the motor's operating accuracy. It also has the advantage of easy disassembly and assembly, facilitating later equipment maintenance. The drive motor 402 is a high-precision servo drive motor, with stable power output, a wide speed range, and high positioning accuracy, meeting the high-speed, high-precision displacement adjustment requirements of the equipment and suitable for precision workpiece cutting. The second gear 403 and the second rack 404 are made of hardened wear-resistant alloy steel, with high tooth surface hardness, wear resistance, and durability. The meshing transmission is smooth and impact-free, achieving high-precision and high-efficiency power transmission and eliminating transmission jamming and displacement deviation problems. The fixed beam 405 is made of thickened I-beam steel, which has a strong load-bearing capacity and excellent resistance to deformation. It provides a stable reference for the installation of the second rack 404 and the guide rail 406, and is not prone to deformation or misalignment during long-term use. The guide rail 406 is made of precision linear guide rail steel, which has high surface hardness, low coefficient of friction, and precise straightness. It ensures that the sliding process of the mounting frame 401 is smooth and stable, without jamming or offset, further improving the accuracy of lateral displacement adjustment.

[0027] Mounting frame 401 is fixedly installed at one end of crossbeam 201, and fixing beam 405 is fixedly installed on the outside of frame 1.

[0028] The external fixed structure is reasonably laid out, which can stably and efficiently transmit the power of the drive mechanism 4 to the crossbeam 201. At the same time, the drive transmission structure is arranged on the outside of the frame 1, which can effectively avoid the erosion and wear of the transmission components caused by the accumulation of waste residue and dust in the processing area, greatly reduce the probability of equipment failure, reduce the workload of daily cleaning and maintenance, and extend the service life of the drive mechanism 4.

[0029] In this embodiment, the servo motor 501 is fixedly installed on the rear side of the frame 1, the lead screw 502 is fixedly installed on the output shaft of the servo motor 501, the adjusting seat 504 is threaded onto the outside of the lead screw 502, the second electric push rod 508 is fixedly installed inside the adjusting seat 504, and a pressure sensor 506 is fixedly installed on one side of the clamping plate 505. The output end of the second electric push rod 508 is fixedly connected to the pressure sensor 506.

[0030] The servo motor 501 is a high-precision closed-loop control servo motor, characterized by rapid start / stop response, strong speed controllability, and minimal positioning error. It can precisely control the number of rotations and rotation angle of the lead screw 502, achieving micron-level precise adjustment of the spacing between the adjusting seats 504, adapting to the positioning requirements of workpieces of different specifications. The lead screw 502 is made of precision ball screw material, and after quenching and polishing, it has high transmission efficiency, quiet operation, and minimal wear. It can accurately convert the rotational motion of the servo motor 501 into the linear motion of the adjusting seat 504, with extremely high displacement transmission accuracy. The adjusting seat 504 adopts a one-piece cast aluminum structure, which is lightweight and has sufficient structural rigidity. The internal mounting cavity is regular and precise, which can stably fix the second electric actuator 508, making it suitable for high-frequency and long-term adjustment operations without easily causing structural loosening or deformation. The second electric actuator 508 is a low-voltage precision electric actuator with smooth extension and retraction, uniform thrust output, and linear and precise control of clamping force. The 506 pressure sensor is a high-precision thin-film pressure sensor with high detection sensitivity, fast response speed, and strong anti-interference ability. It can collect workpiece clamping pressure data in real time and accurately, providing precise data support for intelligent control of clamping force. It completely solves the defects of traditional mechanical clamping structures that cannot accurately control clamping force and are prone to workpiece loosening, displacement, or extrusion deformation and damage.

[0031] In this embodiment, a guide rod 507 is fixedly installed on one side of the clamping plate 505. The guide rod 507 is slidably installed in the adjusting seat 504. Slide grooves are provided on both inner walls of the frame 1. The adjusting seat 504 is slidably installed in the corresponding slide groove. A longitudinal rail 503 is fixedly installed on the side wall of the slide groove. The adjusting seat 504 is slidably sleeved on the outside of the longitudinal rail 503.

[0032] The clamping plate 505 is made of steel plate composite anti-slip and wear-resistant rubber material. The plate surface is flat and regular, and the side in contact with the workpiece has anti-slip buffering properties. This increases the contact friction with the workpiece, improves the stability of clamping and fixing, and prevents the workpiece from slipping or shifting during cutting. It also avoids surface scratches and pressure marks caused by direct contact between the rigid plate and the workpiece, effectively protecting the workpiece's appearance and processing quality. The guide rod 507 is made of high-precision polished stainless steel round steel, with high dimensional accuracy, good wear resistance, and excellent straightness. It can accurately guide and limit the horizontal clamping action of the clamping plate 505, preventing problems such as offset, tilting, and shaking of the clamping plate 505 during clamping, ensuring accurate alignment and uniform force distribution of the clamping plates 505 on both sides. The longitudinal rail 503 is made of precision linear slide rail material with high surface hardness, wear resistance, and deformation resistance. It forms a double-limiting sliding structure with the slide groove of the frame 1, which can significantly improve the stability and straightness of the adjustment seat 504 during movement, avoiding adjustment jamming and displacement deviation, and ensuring workpiece positioning accuracy.

[0033] In this embodiment, slide rails 3 are fixedly installed on both sides of the top of the frame 1, and the crossbeam 201 is slidably sleeved on the outside of the slide rails 3.

[0034] The slide rail 3 is made of high-hardness alloy steel and is precision ground. The surface is quenched and rust-proofed, with excellent wear resistance and precise straightness. The two sets of slide rails 3 are arranged symmetrically and in parallel, which can form a bidirectional balanced support for the crossbeam 201, effectively dispersing the load of the crossbeam 201 during operation, reducing the probability of sliding wear and deformation, and ensuring the accuracy and stability of the crossbeam 201 in long-term high-speed reciprocating sliding, thereby improving the cutting and processing accuracy of the equipment from the structural basis.

[0035] In this embodiment, during use, the workpiece to be processed is first placed on the support mechanism 6 inside the frame 1. The positioning mechanisms 5 on both sides of the frame 1 complete the precise clamping and positioning of the workpiece. Specifically, the servo motor 501 installed on the rear side of the frame 1 drives the lead screw 502 to rotate, causing the adjusting seat 504 threaded onto the outside of the lead screw 502 to slide along the longitudinal rail 503 inside the slide groove of the frame 1. This adjusts the distance between the two adjusting seats 504 according to the workpiece specifications. After the distance is adjusted, the second electric push rod 508 installed inside the adjusting seat 504 extends and pushes the clamping plate 505 to move horizontally through the pressure sensor 506. At the same time, the guide rod 507 on one side of the clamping plate 505 slides inside the adjusting seat 504 to guide and limit the clamping action. The two clamping plates 505 cooperate synchronously to clamp the workpiece. The pressure sensor 506 detects the clamping pressure in real time, which can not only ensure that the workpiece is firmly clamped and avoid displacement and misalignment during the cutting process, but also prevent the workpiece from being squeezed and deformed due to excessive clamping pressure, thus achieving stable and precise positioning of workpieces of different specifications. Compared to the fixed positioning fixtures used in traditional laser cutting machines, the positioning mechanism 5 of this equipment can achieve adaptive stepless adjustment. It can adapt to the positioning needs of various workpieces such as large plates, small plates, irregular shapes, and curved surfaces without changing the positioning fixture, which greatly improves the equipment's processing versatility and production changeover efficiency. At the same time, relying on the real-time detection feedback of the pressure sensor 506, a flexible clamping mode with closed-loop pressure control is formed, which protects the workpiece in all aspects while ensuring clamping stability, effectively reducing workpiece positioning loss and improving the processing qualification rate.

[0036] After the workpiece is positioned, the cutting position of the laser cutter 205 is adjusted by the cooperation of the drive mechanism 4 and the moving mechanism 2. When the drive mechanism 4 is working, the drive motor 402 inside the mounting frame 401 drives the second gear 403 to rotate. By utilizing the meshing action of the second gear 403 and the second rack 404 on the top of the fixed beam 405, the mounting frame 401 is driven to slide along the guide rail 406 on one side of the fixed beam 405, thereby driving the crossbeam 201, which is fixedly connected to the mounting frame 401, to slide laterally along the slide rails 3 on both sides of the top of the frame 1, thereby realizing the lateral position adjustment of the laser cutter 205. This gear and rack meshing transmission structure has the advantages of high transmission rigidity, fast response speed, high positioning accuracy and strong load-bearing capacity. With the dual guide limit of high-precision guide rail 406 and slide rail 3, it can realize infinitely precise lateral adjustment of laser cutter 205, with no transmission gap and no running deviation. It effectively solves the problems of low accuracy and easy stretching and deformation of traditional belt drive and chain drive, and greatly improves the overall cutting accuracy of large-format workpieces.

[0037] Simultaneously, the rotary motor 207 of the moving mechanism 2 drives the first gear 208 to rotate. Relying on the meshing structure between the first gear 208 and the first rack 209 on the top of the crossbeam 201, the moving seat 202 is driven to slide longitudinally along the outer side of the crossbeam 201, thereby realizing the longitudinal position adjustment of the laser cutter 205. Furthermore, the first electric push rod 203 fixed to the front side of the moving seat 202 can drive the lifting plate 204 to rise and fall vertically, precisely adjusting the vertical cutting height of the laser cutter 205. The flexible wire frame 206 on the top of the lifting plate 204 can ensure the safety and stability of the lifting and adjustment process. The equipment utilizes a three-dimensional independent and precise adjustment structure (horizontal, vertical, and center) to achieve comprehensive and precise calibration of the laser cutter 205's spatial position. This allows for accurate matching of the laser cutting focal length and trajectory requirements for workpieces of varying thicknesses and shapes, making it suitable for various precision cutting operations. Simultaneously, the flexible wire frame 206 neatly organizes the equipment's movement path throughout the entire process, effectively preventing wire tangling, pulling, and wear damage. This ensures the safety and stability of the equipment during long-term continuous operation, reducing the probability of equipment malfunction and downtime.

[0038] Throughout the entire cutting process, the support mechanism 6 inside the frame 1 continuously provides adaptive support to the workpiece. The third electric push rod 604 on the front side of the base plate 601 drives the first lifting frame 605 to rise and fall, and the fourth electric push rod 607 on the rear side of the base plate 601 drives the second lifting frame 608 to rise and fall. The first lifting frame 605 rotates with the bottom side plate 603 of the support net 602 via the first round rods 606 on both sides. The second lifting frame 608 rotates with the square plate 610 via the second round rods 609 on both sides. At the same time, the square plate 610 can slide inside the square hole 611 of the side plate 603, thereby realizing the adaptive fine adjustment of the support net 602 at multiple angles and heights. This allows the support net 602 to fully conform to the bottom of the workpiece, effectively supporting the suspended parts of the workpiece and avoiding deformation and vibration problems during the workpiece cutting process. Traditional laser cutting machines typically use fixed planar supports, which cannot meet the support requirements of irregularly shaped, curved, and large-span suspended workpieces. The suspended parts of the workpiece are prone to vibration, deformation, chipping, and dimensional deviations under the high temperature and mechanical vibration of laser cutting, severely affecting processing quality. This equipment's support mechanism 6 employs a composite adjustment structure with independent front and rear lifting combined with sliding rotation. It can adaptively adjust the angle and height of the support mesh 602 according to the workpiece's bottom contour, curvature, and suspended position, achieving fully fitted flexible support. This completely eliminates the risk of workpiece deformation and vibration under suspended stress, significantly improving the yield rate of irregularly shaped and thin-plate workpieces.

[0039] Through the coordinated operation of various components, the equipment can complete high-precision and high-stability laser cutting of workpieces of various specifications, effectively improving the cutting accuracy and processing yield, and adapting to the cutting and processing needs of various conventional and irregular workpieces.

[0040] This equipment, through the pressure-adaptive flexible clamping of the positioning mechanism 5, the all-round adaptive fitting support of the support mechanism 6, and the three-dimensional high-precision displacement adjustment of the moving mechanism 2 and the driving mechanism 4, forms a high-precision, high-stability, and highly versatile laser cutting processing system. The various structures have strong linkage and low operational fault tolerance, which can effectively reduce workpiece processing errors and scrap rates. At the same time, the equipment is durable, easy to maintain, and adaptable to a wide range of scenarios, meeting various operational needs such as industrial mass production, precision parts processing, and customized processing of irregular-shaped parts. It has extremely high practical value and market promotion value.

[0041] The fiber laser cutting machine with a positioning mechanism provided by the present invention has been described in detail above. Specific embodiments have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A fiber laser cutting machine with a positioning mechanism, characterized in that, include: A frame (1) is provided with a moving mechanism (2) at the top of the frame (1). The moving mechanism (2) includes a crossbeam (201), a moving seat (202), a lifting plate (204), and a first electric push rod (203). A laser cutter (205) is fixedly installed at the bottom of the lifting plate (204). A drive mechanism (4) is provided at one end of the crossbeam (201). A positioning mechanism (5) is provided on both sides of the inside of the frame (1). The positioning mechanism (5) includes a servo motor (501), a lead screw (502), a guide rail (406), an adjusting seat (504), a second electric push rod (508), and a clamping plate (505). A support mechanism (6) is provided on the top of the inside of the frame (1).

2. The fiber laser cutting machine with a positioning mechanism according to claim 1, characterized in that, The support mechanism (6) includes: a base plate (601), a support net (602), a first lifting frame (605), and a second lifting frame (608). The base plate (601) is fixedly installed inside the frame (1). A third electric push rod (604) and a fourth electric push rod (607) are fixedly installed on the front and rear sides of the base plate (601), respectively. The output end of the third electric push rod (604) is fixedly connected to the first lifting frame (605). A first round rod (606) is fixedly installed on both sides of the first lifting frame (605). Side plates (603) are fixedly installed on both sides of the bottom of the support net (602). The first round rod (606) is rotatably installed in the corresponding side plate (603). The output end of the fourth electric push rod (607) is fixedly connected to the second lifting frame (608). The second lifting frame (608) has a second round rod (609) fixedly installed on both sides. A square hole (611) is opened on one side of the side plate (603). A square plate (610) is slidably installed in the square hole (611). The second round rod (609) is rotatably installed in the corresponding square plate (610).

3. The fiber laser cutting machine with a positioning mechanism according to claim 1, characterized in that, The movable seat (202) is slidably sleeved on the outside of the crossbeam (201). The first electric push rod (203) is fixedly installed on the front side of the movable seat (202). The lifting plate (204) is fixedly installed on the output end of the first electric push rod (203). A flexible wire frame (206) is provided on the top of the lifting plate (204). A rotary motor (207) is fixedly installed on the rear side of the movable seat (202). A first gear (208) is fixedly installed on the output shaft of the rotary motor (207). A first rack (209) is fixedly installed on the top of the crossbeam (201). The first rack (209) meshes with the first gear (208).

4. The fiber laser cutting machine with a positioning mechanism according to claim 1, characterized in that, The drive mechanism (4) includes: a mounting frame (401), a drive motor (402), a second gear (403), a second rack (404), and a fixed beam (405). The second rack (404) is fixedly mounted on the top of the fixed beam (405). The second gear (403) meshes with the second rack (404). The second gear (403) is fixedly mounted on the output shaft of the drive motor (402). The drive motor (402) is fixedly mounted inside the mounting frame (401). A guide rail (406) is fixedly mounted on one side of the fixed beam (405). The mounting frame (401) is slidably sleeved on the outside of the guide rail (406). The mounting frame (401) is fixedly installed at one end of the crossbeam (201), and the fixing beam (405) is fixedly installed on the outside of the frame (1).

5. The fiber laser cutting machine with a positioning mechanism according to claim 1, characterized in that, The servo motor (501) is fixedly installed on the rear side of the frame (1), the lead screw (502) is fixedly installed on the output shaft of the servo motor (501), the adjusting seat (504) is threaded onto the outside of the lead screw (502), the second electric push rod (508) is fixedly installed inside the adjusting seat (504), and a pressure sensor (506) is fixedly installed on one side of the clamping plate (505). The output end of the second electric push rod (508) is fixedly connected to the pressure sensor (506).

6. The fiber laser cutting machine with a positioning mechanism according to claim 1, characterized in that, A guide rod (507) is fixedly installed on one side of the clamping plate (505). The guide rod (507) is slidably installed in the adjusting seat (504). Slide grooves are provided on both sides of the inner wall of the frame (1). The adjusting seat (504) is slidably installed in the corresponding slide groove. A longitudinal rail (503) is fixedly installed on the side wall of the slide groove. The adjusting seat (504) is slidably sleeved on the outside of the longitudinal rail (503).

7. The fiber laser cutting machine with a positioning mechanism according to claim 1, characterized in that, The top two sides of the frame (1) are fixedly installed with slide rails (3), and the crossbeam (201) is slidably sleeved on the outside of the slide rails (3).

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