A smart cutting device for processing metal tube handrails in rail transit

Abstract

This invention discloses an intelligent cutting device for processing metal tube handrails in rail transit, relating to the field of tube laser cutting technology. It includes a worktable and a laser cutting mechanism mounted on top of the worktable. The invention straightens the bent position of the tube by installing a cutting precision control mechanism. During the process of straightening the tube from a bent state, the distance between the two ends of the tube is simultaneously controlled to prevent the tube from reverting to its original position and ensure it remains straight. The straightness of the tube ensures the accuracy of laser cutting and avoids problems such as cutting position deviation and inconsistent opening shapes caused by bending. Furthermore, restricting the two ends of the tube prevents deformation due to its own weight and bending deformation during pushing. Simultaneously, when the tube is completely straight, it is heated and repaired to prevent it from bending back to its original position after cutting.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology for pipe fittings, and in particular to an intelligent cutting device for processing metal pipe handrails for rail transit. Background Technology

[0002] Laser cutting is commonly used for cutting holes in metal tube handrails. However, metal tubes often experience localized bending during storage or forming. When a metal tube bends, its straight length shortens accordingly. Directly performing laser positioning cutting under these conditions can lead to deviations in the cutting position. Furthermore, if the hole is located precisely at the bend, the hole's shape will become distorted, thus affecting the cutting accuracy.

[0003] In existing technologies, metal tubes are typically processed by clamping one end and rotating and pushing it. However, when the metal tube is long, pushing it from one end can easily cause it to bend. Combined with the tube's own weight, it will sag, which also affects cutting accuracy. Furthermore, rotating the tube may cause slight deformation, which can also affect cutting accuracy. Summary of the Invention

[0004] This invention proposes an intelligent cutting device for processing metal tube handrails in rail transit, in order to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A smart cutting device for processing metal tube handrails for rail transit includes a worktable and further includes:

[0007] Laser cutting mechanism, which is mounted on top of a worktable, including a laser cutting machine;

[0008] The clamping and feeding mechanism, which is mounted on the top of the worktable, includes a chuck and a clamping shaft;

[0009] A cutting precision control mechanism, which is connected to the clamping and feeding mechanism, includes a straightening mechanism and an anti-reset mechanism;

[0010] The straightening mechanism includes two symmetrically arranged locking blocks, with multiple ball bearings rotatably connected to the inner wall of each locking block, and a heater fixed inside each locking block.

[0011] The anti-reset mechanism includes a hydraulic cylinder 1, a sensor is fixed to the output end of the hydraulic cylinder 1, a sleeve is fixed to one side of the sensor, a plurality of hydraulic cylinders 2 are fixed to the inner wall of the sleeve, and a clamping plate is fixed to the output end of the hydraulic cylinder 2.

[0012] The drive mechanism is mounted on top of the worktable.

[0013] Furthermore, the laser cutting mechanism also includes a support frame fixed to the top of the worktable, a push rod motor fixed to the top of the support frame, and the laser cutting machine fixed to the bottom of the push rod motor.

[0014] Furthermore, the clamping and feeding mechanism includes a movable frame, an installation plate is rotatably connected inside the movable frame, the chuck is fixed to one side of the installation plate, the pipe fittings are clamped between the multiple chucks, a motor is fixed to one side of the movable frame, and the output end of the motor is fixedly connected to the installation plate.

[0015] Furthermore, the clamping and feeding mechanism also includes a fixed frame fixed to the top of the worktable, and an electric rotating ring is rotatably connected inside the fixed frame, with multiple clamping shafts fixed to one side of the electric rotating ring;

[0016] A second motor is fixed to one side of the fixed frame, and a screw is fixed to the output end of the second motor. The screw is threaded inside the first movable frame, and a first guide rod is fitted inside the first movable frame. One end of the first guide rod is fixedly connected to the fixed frame.

[0017] Furthermore, the straightening mechanism also includes two movable frames, one of which has a reciprocating screw threaded inside, and a one-way gear is installed at one end of the reciprocating screw; the other movable frame has a guide rod fixed to the top of the worktable.

[0018] A push rod motor 2 is fixed between the two movable frames 2. A mounting block is fixed to the output end of the push rod motor 2. A double-section reciprocating threaded rod is rotatably connected inside the mounting block. A bevel gear 1 is installed at one end of the double-section reciprocating threaded rod. A bevel gear 2 is meshed on one side of the bevel gear 1. Two sliders are fixed to the inner wall of the bevel gear 2. A rotating shaft 1 is sleeved inside the bevel gear 2. Two sliding grooves are opened on the outside of the rotating shaft 1. The sliders are sleeved inside the sliding grooves. A one-way gear 2 is installed at one end of the rotating shaft 1.

[0019] One of the movable frames has a part opening, and the first and second bevel gears are fitted inside the part opening. The first rotating shaft is fitted through the part opening and inside the movable frame.

[0020] The two locking blocks are threadedly fitted onto the outside of the two reciprocating threads of the double-section reciprocating threaded rod. A guide rod three is fixed inside the mounting block, and the two locking blocks are fitted onto the outside of the guide rod three.

[0021] Furthermore, the anti-reset mechanism also includes an L-shaped plate fixed to one side of the movable frame. The L-shaped plate is sleeved inside the fixed frame. A second rotating shaft is rotatably connected inside the vertical plate of the L-shaped plate. One end of the second rotating shaft is fixedly connected to a hydraulic cylinder. A third rotating shaft is rotatably connected inside the horizontal plate of the L-shaped plate. A belt assembly is installed at one end of the third rotating shaft and one end of the second rotating shaft. A belt assembly is installed at the other end of the third rotating shaft and the output end of the motor.

[0022] Furthermore, the drive mechanism includes a motor plate fixed to the top of the workbench, a motor three is fixed inside the motor plate, a gear is fixed to the output end of the motor three, one side of the gear meshes with a one-way gear one, and the other side meshes with a one-way gear two, and the rotating shaft one and the reciprocating screw are rotatably connected to the motor plate.

[0023] Furthermore, a controller is installed on one side of the workbench, and the controller is electrically connected to motor one, motor two, motor three, hydraulic cylinder one, hydraulic cylinder two, chuck, sensor, clamping shaft, push rod motor one, push rod motor two and laser cutting machine respectively.

[0024] Compared with existing technologies, the beneficial effects of this invention are:

[0025] This invention straightens the bent portion of a pipe by installing a cutting precision control mechanism. During the straightening process, the distance between the two ends of the pipe is simultaneously controlled to prevent it from reverting to its original position and ensure it remains straight. This straightness guarantees the precision of laser cutting and avoids issues such as cutting position deviations and inconsistent opening shapes caused by bending. Furthermore, restricting the two ends of the pipe prevents deformation due to its own weight and bending during pushing. Simultaneously, when the pipe is completely straight, it is heated to repair itself, preventing it from bending back to its original position after cutting. During the cutting process, both ends of the pipe rotate synchronously to prevent torsional forces from single-end rotation that could deform the pipe and affect cutting precision. Attached Figure Description

[0026] Figure 1 This is a first-view structural schematic diagram of an intelligent cutting device for processing metal tube handrails in rail transit, as proposed in this invention.

[0027] Figure 2 This is a second-view structural schematic diagram of an intelligent cutting device for processing metal tube handrails in rail transit, as proposed in this invention.

[0028] Figure 3 This is a first-view structural diagram of the clamping and feeding mechanism of an intelligent cutting device for processing metal tube handrails in rail transit, as proposed in this invention.

[0029] Figure 4This is a second-view structural diagram of the clamping and feeding mechanism of an intelligent cutting device for processing metal tube handrails in rail transit, as proposed in this invention.

[0030] Figure 5 This is a third-view structural diagram of the clamping and feeding mechanism of an intelligent cutting device for processing metal tube handrails in rail transit, as proposed in this invention.

[0031] Figure 6 This is a schematic diagram of the straightening mechanism of an intelligent cutting device for processing metal tube handrails in rail transit, as proposed in this invention.

[0032] Figure 7 This is a schematic diagram of the anti-reset mechanism of an intelligent cutting device for processing metal tube handrails in rail transit, as proposed in this invention.

[0033] Figure 8 This is a schematic diagram of the sleeve structure of an intelligent cutting device for processing metal tube handrails in rail transit, as proposed in this invention.

[0034] Figure 9 for Figure 6 Enlarged structural diagram of point A inside.

[0035] In the diagram: 1. Workbench; 2. Laser cutting mechanism; 21. Support frame one; 22. Push rod motor one; 23. Laser cutting machine; 3. Clamping and feeding mechanism; 31. Moving frame one; 32. Mounting plate; 33. Chuck; 35. Pipe fitting; 36. Fixed frame; 37. Electric rotating ring; 38. Clamping shaft; 39. Motor two; 310. Screw; 311. Guide rod one; 312. Motor one; 4. Cutting precision control mechanism; 41. Moving frame two; 42. Reciprocating screw; 43. Push rod motor two; 44. Mounting block; 45. Double-stage reciprocating threaded rod; 46. Bevel gear one; 4 7. Clamping block; 48. Ball bearing; 49. Shaft 1; 410. One-way gear 2; 411. Slide groove; 412. Slider; 413. Bevel gear 2; 414. L-shaped plate; 415. Shaft 2; 416. Shaft 3; 417. Belt assembly 1; 418. Hydraulic cylinder 1; 419. Sensor; 420. Sleeve; 421. Hydraulic cylinder 2; 422. Clamping plate; 423. Guide rod 2; 424. One-way gear 1; 425. Part opening; 426. Belt assembly 2; 427. Guide rod 3; 5. Drive mechanism; 51. Motor plate; 52. Motor 3; 53. Gear. Detailed Implementation

[0036] 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.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Example: Refer to Figures 1-9 A smart cutting device for processing metal tube handrails for rail transit includes a worktable 1, and further includes:

[0040] Laser cutting mechanism 2, which is mounted on top of worktable 1, includes laser cutting machine 23;

[0041] The clamping and feeding mechanism 3 is installed on the top of the worktable 1 and includes a chuck 33 and a clamping shaft 38.

[0042] The cutting precision control mechanism 4 is connected to the clamping and feeding mechanism 3, and includes a straightening mechanism and an anti-reset mechanism;

[0043] The straightening mechanism includes two symmetrically arranged locking blocks 47, with multiple balls 48 rotatably connected to the inner wall of the locking blocks 47, and a heater fixed inside the locking blocks 47.

[0044] The anti-reset mechanism includes a hydraulic cylinder 418, a sensor 419 is fixed to the output end of the hydraulic cylinder 418, a sleeve 420 is fixed to one side of the sensor 419, a plurality of hydraulic cylinders 421 are fixed to the inner wall of the sleeve 420, and a clamping plate 422 is fixed to the output end of the hydraulic cylinder 421.

[0045] Drive mechanism 5 is mounted on top of worktable 1.

[0046] The laser cutting mechanism 2 also includes a support frame 21 fixed to the top of the worktable 1. A push rod motor 22 is fixed to the top of the support frame 21, and the laser cutting machine 23 is fixed to the bottom of the push rod motor 22.

[0047] The clamping and feeding mechanism 3 includes a movable frame 31, an mounting plate 32 is rotatably connected inside the movable frame 31, a chuck 33 is fixed on one side of the mounting plate 32, and a pipe fitting 35 is clamped between multiple chucks 33. A motor 312 is fixed on one side of the movable frame 31, and the output end of the motor 312 is fixedly connected to the mounting plate 32.

[0048] The clamping and feeding mechanism 3 also includes a fixed frame 36 fixed to the top of the worktable 1. An electric rotating ring 37 is rotatably connected inside the fixed frame 36, and multiple clamping rotating shafts 38 are fixed to one side of the electric rotating ring 37.

[0049] A motor 39 is fixed to one side of the fixed frame 36. A screw 310 is fixed to the output end of the motor 39. The screw 310 is threaded inside the movable frame 31. A guide rod 311 is fitted inside the movable frame 31. One end of the guide rod 311 is fixedly connected to the fixed frame 36.

[0050] The straightening mechanism also includes two movable frames 41. One of the movable frames 41 has a reciprocating screw 42 threaded inside, and a one-way gear 424 is installed at one end of the reciprocating screw 42. The other movable frame 41 has a guide rod 423 inside, and the guide rod 423 is fixed to the top of the worktable 1.

[0051] A push rod motor 43 is fixed between two movable frames 41. A mounting block 44 is fixed to the output end of the push rod motor 43. A double-stage reciprocating threaded rod 45 is rotatably connected inside the mounting block 44. A bevel gear 46 is installed at one end of the double-stage reciprocating threaded rod 45. A bevel gear 413 meshes with one side of the bevel gear 46. Two sliders 412 are fixed to the inner wall of the bevel gear 413. A rotating shaft 49 is sleeved inside the bevel gear 413. Two sliding grooves 411 are opened on the outside of the rotating shaft 49. The sliders 412 are sleeved inside the sliding grooves 411. A one-way gear 410 is installed at one end of the rotating shaft 49.

[0052] One of the movable frames 41 has a part opening 425, bevel gear 46 and bevel gear 413 are fitted inside the part opening 425, and rotating shaft 49 is fitted through the part opening 425 and inside the movable frame 41.

[0053] Two locking blocks 47 are threaded onto the outside of the two reciprocating threads of the double-section reciprocating threaded rod 45. A guide rod 3 427 is fixed inside the mounting block 44, and the two locking blocks 47 are fitted onto the outside of the guide rod 3 427.

[0054] The anti-reset mechanism also includes an L-shaped plate 414 fixed to one side of the movable frame 31. The L-shaped plate 414 is fitted inside the fixed frame 36. The vertical plate of the L-shaped plate 414 is rotatably connected to a second rotating shaft 415. One end of the second rotating shaft 415 is fixedly connected to a hydraulic cylinder 418. The horizontal plate of the L-shaped plate 414 is rotatably connected to a third rotating shaft 416. One end of the third rotating shaft 416 and one end of the second rotating shaft 415 are equipped with a belt assembly 417. The other end of the third rotating shaft 416 and the output end of the motor 312 are equipped with a belt assembly 426.

[0055] The drive mechanism 5 includes a motor plate 51 fixed on the top of the workbench 1. A motor 3 52 is fixed inside the motor plate 51. A gear 53 is fixed at the output end of the motor 3 52. One side of the gear 53 meshes with a one-way gear 424, and the other side meshes with a one-way gear 410. A rotating shaft 49 and a reciprocating screw 42 are rotatably connected to the motor plate 51.

[0056] A controller is installed on one side of the workbench 1. The controller is electrically connected to motor 1 312, motor 2 39, motor 3 52, hydraulic cylinder 1 418, hydraulic cylinder 2 421, chuck 33, sensor 419, clamping shaft 38, push rod motor 1 22, push rod motor 2 43 and laser cutting machine 23.

[0057] Working principle:

[0058] The controller controls hydraulic cylinder 421 to push clamping plate 422 closer to the inner fitting 35, clamping and limiting one end of the fitting 35. Then, motor 52 is started to drive gear 53 to reverse. The reverse rotation of gear 53 satisfies the direction of rotation of shaft 49 driven by unidirectional gear 410. The rotation of shaft 49 drives bevel gear 413 to rotate through slide groove 411 and slider 412. Bevel gear 413 drives bevel gear 46 and double-stage reciprocating threaded rod 45 to rotate, causing two clamping blocks 47 to drive heater and ball bearing 48 closer to the fitting 35 and clamp the fitting 35. Internally, motor 3 (52) drives gear 53 to rotate forward. The forward rotation of gear 53 satisfies the rotation direction of the one-way gear 1 (424) driving the reciprocating screw 42, causing the moving frame 2 (41) to move multiple locking blocks 47. When the moving frame 2 (41) moves, it pushes bevel gear 2 (413) and slider 412 to slide along the groove 411, ensuring that bevel gear 2 (413) and bevel gear 1 (46) remain engaged. When the locking blocks 47 move to the bent position of the pipe fitting 35, they straighten the bent position. At the instant of straightening, the overall length of the pipe fitting 35 increases. As the length increases... The pressure is applied to clamping plate 422, hydraulic cylinder 421, and sleeve 420. Sensor 419 senses the pressure and transmits the pressure data to the controller. The controller then controls hydraulic cylinder 418 to pull sleeve 420 and one end of pipe 35 backward. This is to prevent the bent position from returning to its original state after the locking block 47 moves away. Therefore, pulling one end of pipe 35 backward during straightening prevents pipe 35 from resetting. The locking block 47 moves from one end of pipe 35 to the other, straightening the bent position of pipe 35 and controlling one end of pipe 35 to maintain its position. When the moving frame 41 moves to the end of the reciprocating screw 42 and stops moving, the starting motor 52 drives the gear 53 to reverse, causing the double-section reciprocating screw rod 45 to rotate. This causes the clamping blocks 47 that have moved to the end of the screw to move away from each other and release the clamping of the tube 35. Because the chuck 33 and the clamping plate 422 have already limited the tube 35, the tube 35 always remains in a straight state. The straight state of the tube 35 can ensure the accuracy of laser cutting, avoid the situation where bending causes deviation in the cutting position, and also avoid the situation where bending of the tube 35 causes inconsistent opening shapes.

[0059] Then, the heater is started, and motor 3 52 drives gear 53 to rotate forward, causing moving frame 2 41 to move block 47 and heater and other structures to reset. The temperature emitted by the heater when it resets acts on pipe 35, heating pipe 35. After the pipe 35 is heated and cooled, it will remain in a straight state, preventing it from returning to a bent state after cutting. Heating and straightening pipe 35 solves the problem of bending pipe 35 after cutting. Then, push rod motor 2 43 is started to move block 47 and other structures upward, so as not to affect the movement of moving frame 1 31.

[0060] Then, start motor 2 39 to make moving frame 1 31 push chuck 33 and tube 35 to move. Tube 35 passes through electric rotating ring 37. Then, start the cylinder of clamping shaft 38 to make the shaft clamp tube 35. When moving frame 1 31 moves, it pushes L-shaped plate 414 to move. The movement of L-shaped plate 414 makes moving frame 1 31 and sleeve 420 maintain the same distance, so that tube 35 always maintains a straight cutting state, avoiding the situation where only one end pushes tube 35, causing tube 35 to bend and affecting accuracy.

[0061] When the workpiece is moved to the cutting position, the laser cutting machine 23 is started to make a hole. At the same time, the first motor 312 is started to rotate forward and reverse so that the tube 35 rotates according to the cutting path. Simultaneously, the second motor 39 is started to rotate forward and reverse so that the tube 35 moves according to the cutting path, so as to achieve the cutting of holes of different shapes. When the tube 35 rotates, the first motor 312 drives the rotating shaft 415, hydraulic cylinder 418 and sleeve 420 to rotate through the belt assembly 417 and the second belt assembly 426. The electric rotating ring 37 drives the clamping rotating shaft 38 to rotate through the internal drive component, so that the sleeve 420, chuck 33 and electric rotating ring 37 rotate synchronously. The purpose is to solve the problem of deformation of one end of the tube 35 due to torsional force during rotation, and to ensure the accuracy of laser cutting.

[0062] After laser cutting, all components are reset, the chuck 33, the clamping shaft 38 and the clamping plate 422 are opened to remove the tube 35, and the processing is completed.

[0063] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An intelligent cutting device for processing rail transit metal pipe handrails, comprising a workbench (1), characterized in that, Also include: Laser cutting mechanism (2) is installed on the top of the workbench (1), including laser cutting machine (23); Clamping feeding mechanism (3) is installed on the top of the workbench (1), including chuck (33) and clamping shaft (38); Cutting precision control mechanism (4) is connected with clamping feeding mechanism (3), including straightening mechanism and anti reset mechanism; The straightening mechanism includes two symmetrically arranged clamping blocks (47), the inner wall of the clamping block (47) is rotatably connected with a plurality of ball bearings (48), and the inside of the clamping block (47) is fixed with a heater; The anti reset mechanism includes hydraulic cylinder one (418), the output end of the hydraulic cylinder one (418) is fixed with a sensor (419), one side of the sensor (419) is fixed with a sleeve (420), the inner wall of the sleeve (420) is fixed with a plurality of hydraulic cylinder two (421), the output end of the hydraulic cylinder two (421) is fixed with a clamping plate (422); Driving mechanism (5) is installed on the top of the workbench (1); The straightening mechanism further includes two moving frames two (41), one of the moving frames two (41) is internally threaded with a reciprocating screw (42), one end of the reciprocating screw (42) is provided with a one-way gear one (424), the other moving frame two (41) is internally sleeved with a guide rod two (423), and the guide rod two (423) is fixed on the top of the workbench (1); The two moving frames two (41) are fixed with a push rod motor two (43), the output end of the push rod motor two (43) is fixed with a mounting block (44), the inside of the mounting block (44) is rotatably connected with a double section reciprocating screw rod (45), one end of the double section reciprocating screw rod (45) is provided with a bevel gear one (46), one side of the bevel gear one (46) is engaged with a bevel gear two (413), the inner wall of the bevel gear two (413) is fixed with two sliding blocks (412), the bevel gear two (413) is internally sleeved with a rotating shaft one (49), the outer portion of the rotating shaft one (49) is provided with two sliding grooves (411), the sliding blocks (412) are sleeved in the sliding grooves (411), and one end of the rotating shaft one (49) is provided with a one-way gear two (410); One of the moving frames two (41) is provided with a part opening (425), the bevel gear one (46) and the bevel gear two (413) are sleeved in the part opening (425), and the rotating shaft one (49) penetrates through the part opening (425) and is sleeved in the moving frame two (41); Two clamping blocks (47) are threadedly sleeved on the outer portions of the two reciprocating threads of the double section reciprocating screw rod (45), the inside of the mounting block (44) is fixed with a guide rod three (427), and the two clamping blocks (47) are sleeved on the outside of the guide rod three (427); The anti-reset mechanism further includes an L-shaped plate (414) fixed on one side of the moving frame (31), the L-shaped plate (414) is sleeved in the fixed frame (36), the vertical plate of the L-shaped plate (414) is rotatably connected with a rotating shaft (415), one end of the rotating shaft (415) is fixedly connected with a hydraulic cylinder (418), the horizontal plate of the L-shaped plate (414) is rotatably connected with a rotating shaft (416), one end of the rotating shaft (416) is fixedly connected with a belt assembly (417), the other end of the rotating shaft (416) is fixedly connected with a belt assembly (426) of the output end of the motor (312).

2. The intelligent cutting device for processing rail transit metal pipe handrails according to claim 1, characterized in that, The laser cutting mechanism (2) further includes a supporting frame (21) fixed on the top of the workbench (1), and the supporting frame (21) is fixedly connected with a push rod motor (22) on the top.

3. The intelligent cutting device for processing rail transit metal pipe handrails according to claim 2, characterized in that, The clamping and feeding mechanism (3) further includes a fixed frame (36) fixed on the top of the workbench (1), and the fixed frame (36) is rotatably connected with a motor (39) on one side.

4. The intelligent cutting device for processing rail transit metal pipe handrails according to claim 3, characterized in that, The clamping and feeding mechanism (3) further includes a fixed frame (36) fixed on the top of the workbench (1), and the fixed frame (36) is rotatably connected with a motor (39) on one side. The fixed frame (36) is fixedly connected with a motor (39) on one side, and the output end of the motor (39) is fixedly connected with a screw rod (310).

5. The intelligent cutting device for processing rail transit metal pipe handrails according to claim 4, characterized in that, The driving mechanism (5) includes a motor plate (51) fixed on the top of the workbench (1), and the motor plate (51) is fixedly connected with a motor (52) in the interior.

6. The intelligent cutting device for processing rail transit metal pipe handrails according to claim 5, characterized in that, One side of the workbench (1) is provided with a controller, and the controller is electrically connected with the motor (312), the motor (39), the motor (52), the hydraulic cylinder (418), the hydraulic cylinder (421), the chuck (33), the sensor (419), the clamping shaft (38), the push rod motor (22), the push rod motor (43) and the laser cutting machine (23).

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