A shell cutting device for power distribution cabinet processing and a cutting method thereof

Abstract

The application discloses a shell cutting device for power distribution cabinet processing and a cutting method thereof, and relates to the technical field of power distribution cabinet processing, which comprises a base plate, the top surface of which is provided with a guide groove; a cutting mechanism arranged on the top surface of the base plate and used for cutting the shell of the power distribution cabinet; and a pre-cutting mechanism arranged on the base plate and used for milling a pre-cut groove on the shell of the power distribution cabinet. The pre-cutting mechanism is cooperated with an electric push rod No.2, a movable supporting block No.1, a connecting rod No.1, a connecting rod No.2, a connecting rod No.3, a supporting rod No.1, a supporting rod No.2, a supporting rod No.3, a supporting block, a supporting arm, a servo motor, a vertical milling cutter and the guide groove, so that the supporting arm drives the servo motor and the vertical milling cutter to linearly feed along the guide groove, the pre-cut groove is milled on the shell, the cutting piece is accurately guided and limited after entering the pre-cut groove, the shaking and deflection of the cutting piece caused by the lack of righting during cutting are effectively prevented, and the cutting precision of the shell of the power distribution cabinet is improved.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet processing technology, specifically to a housing cutting device and cutting method for power distribution cabinet processing. Background Technology

[0002] Distribution cabinets are terminal devices used for power distribution, control, and protection in power systems. Their housings are typically made of metal sheets such as stainless steel, cold-rolled steel, or aluminum-zinc coated steel, processed through cutting, bending, and welding. Housing cutting is one of the key processes in distribution cabinet production; the cutting quality directly affects the precision of subsequent bending and welding, as well as the overall assembly quality and protective performance of the cabinet.

[0003] In existing technologies, the cutting of distribution cabinet housings mainly employs mechanical sawing. When using a circular saw to cut the sheet metal of the distribution cabinet housing, the cutting blade initially contacts the sheet surface. Due to the small contact area between the circumferential cutting edge and the sheet surface, and the lack of effective alignment and guidance at the moment of entry, the blade is easily subjected to uneven cutting forces, resulting in wobbling or wobble. This wobbling not only causes the cutting position to deviate from the predetermined trajectory and the cut to be uneven, but may also lead to blade chipping or breakage, affecting processing safety. Furthermore, during the cutting process, the cutting force continuously changes as the blade cuts into the sheet metal. Static clamping cannot effectively counteract the disturbance caused by the cutting force on the workpiece in real time, making it difficult to actively suppress the vibration and deformation of the sheet metal during the cutting process. Therefore, based on the above research and combined with existing technologies, a housing cutting device and its cutting method for processing distribution cabinets are proposed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a casing cutting device and a cutting method for processing power distribution cabinets, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A casing cutting device for processing electrical distribution cabinets, comprising: The substrate has a guide groove on its top surface; A cutting mechanism, located on the top surface of the substrate, is used to cut the power distribution cabinet housing; A pre-cutting mechanism is provided on the base plate and is used to mill a pre-cutting groove on the power distribution cabinet housing so that the cutting blade of the cutting mechanism is guided after entering the pre-cutting groove, thereby reducing the shaking of the cutting blade when cutting and improving the cutting accuracy and stability. A tensioning clamping structure is disposed on the base plate and is used to clamp the power distribution cabinet housing and apply tension force to its two ends; The pre-cutting mechanism includes a fixed bracket, a connecting frame, a movable support block, a first driving component, a support arm, a servo motor, a vertical milling cutter, and a linkage transmission assembly. The fixed bracket is fixed to the base plate, the connecting frame is fixed to the fixed bracket, the movable support block is slidably disposed in the connecting frame, and the first driving member is connected to the movable support block to drive it to slide horizontally. The support arm is slidably disposed above the substrate, the servo motor is fixed to the support arm, and the vertical milling cutter is fixed to the output shaft of the servo motor and extends into the guide groove; The linkage transmission assembly is connected between the movable support block and the support arm, and is used to convert the horizontal sliding of the movable support block into the linear feed motion of the vertical milling cutter driven by the support arm along the guide groove.

[0006] Further, the linkage transmission assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a first support rod, a second support rod, a third support rod, and a support block; the upper end of the first connecting rod is rotatably connected to the first movable support block, the second connecting rod is rotatably connected to the middle of the first connecting rod, and the third connecting rod is rotatably connected to the lower end of the first connecting rod; the second connecting rod and the third connecting rod are arranged parallel to each other; the second connecting rod is rotatably connected to the support block fixed to the connecting frame; the upper end of the first support rod is rotatably connected to the support arm, the second support rod is rotatably connected to the middle of the first support rod, and its upper end is rotatably connected to the upper end of the second connecting rod; the third support rod is rotatably connected to the lower end of the first support rod and is arranged parallel to the second support rod, the upper end of the third connecting rod is rotatably connected to the third support rod, and the upper end of the third support rod is rotatably connected to the second connecting rod.

[0007] Furthermore, the tensioning clamping structure includes two locking brackets, a clamping assembly, a tensioning assembly, and a tension force sensor; the two locking brackets are slidably disposed on the front and rear sides of the base plate, with their openings facing each other, for accommodating the two ends of the distribution cabinet housing; the clamping assembly is disposed on the locking brackets for clamping or releasing the ends of the distribution cabinet housing located within the locking brackets; the tensioning assembly is connected to the locking brackets for driving the two locking brackets to move away from or closer to each other to apply or release tension force; the tension force sensor is disposed on the force transmission path between the tensioning assembly and the locking brackets for real-time detection of tension force.

[0008] Furthermore, the tensioning assembly includes a mounting baffle, a second limiting slider, a sliding support rod, and a third electric push rod; the mounting baffle is fixed to the base plate, and a support hole is provided on its bottom surface; the sliding support rod is fixed in the support hole; the second limiting slider is slidably sleeved on the sliding support rod and is fixedly connected to the locking bracket; the third electric push rod is fixed to the bottom surface of the base plate, and its telescopic shaft is connected to the second limiting slider through a positioning frame; the tension force sensor is embedded in the positioning frame.

[0009] Further, the clamping assembly includes a movable clamping plate, a downward pressure rod, a movable rod one, a movable rod two, a movable rod three, a crossbar one, a movable support arm, a sliding bracket, an electric push rod four, and a crossbar two; the movable clamping plate is slidably disposed inside the locking bracket, the downward pressure rod is fixed to the top surface of the movable clamping plate, and the upper end of the downward pressure rod passes through the locking bracket; the crossbar one is rotatably connected between two positioning plates on the top surface of the locking bracket, and the movable rod three is fixedly sleeved on the crossbar one; the movable rod one is rotatably connected to the left and right sides of the downward pressure rod, and the lower end of the movable rod three is connected to the two movable support arms. The upper end of rod one is rotatably connected; the crossbar two is rotatably connected between the two positioning plates; the movable support arm has an L-shaped structure and is fixedly sleeved on the crossbar two; the crossbar two is located at the corner of the movable support arm; the movable rod two is rotatably connected to the left and right sides of the movable support arm; the front end of the movable rod two is coaxially connected to the upper end of the movable rod one and the lower end of the movable rod three; the sliding bracket is slidably connected to the movable support arm; the electric push rod four is fixed to the rear side of the locking bracket by a mounting support plate; the telescopic shaft of the electric push rod four is fixedly connected to the bottom surface of the sliding bracket.

[0010] Further, the cutting mechanism includes a support frame, a movable base, a ball screw, a limiting rod, a first drive motor, a first electric push rod, a stabilizing support plate, a mounting side plate, a support roller, a cutting disc, and a second drive motor. The support frame is fixed to the base plate, the movable base is slidably disposed within the support frame, the ball screw is rotatably connected to the support frame and threadedly connected to the movable base, the limiting rod is fixed to the support frame and slidably connected to the movable base, the first drive motor is fixed to the right side of the support frame and its drive shaft is fixedly connected to the ball screw, the first electric push rod is fixed to the top surface of the movable base, its telescopic shaft passes through the movable base and is fixedly connected to the stabilizing support plate, the mounting side plate is fixed to the bottom surface of the stabilizing support plate, the support roller is rotatably connected to the mounting side plate, the cutting disc is fixedly sleeved on the support roller, and the second drive motor is fixed to the mounting side plate and its drive shaft is fixedly connected to the support roller.

[0011] Furthermore, two fixing plates are fixed on the top surface of the substrate. The two fixing plates are located on the front and rear sides of the support arm, respectively. Each fixing plate is provided with a limiting slide rail. A limiting slider is slidably connected on the limiting slide rail. The support arm is fixedly connected to the limiting slider through an S-shaped connecting arm.

[0012] Furthermore, two limiting brackets are installed on the top surface of the substrate. The two limiting brackets are located on the front and rear sides of the guide groove and are used to laterally position the power distribution cabinet housing.

[0013] Furthermore, the top surface of the substrate is provided with several support grooves, and each support groove is rotatably connected with a movable wheel to assist the power distribution cabinet housing in moving on the substrate.

[0014] A method for cutting the casing of a power distribution cabinet includes the following steps: S1: Place the power distribution cabinet housing on the base plate, so that one side of the power distribution cabinet housing abuts against the two limit brackets for positioning, while the front and rear ends of the power distribution cabinet housing are respectively placed inside the two locking brackets. S2: Start the electric push rod four, which moves the movable clamping plate downward to engage with the inner bottom surface of the locking bracket and clamp the front and rear ends of the distribution cabinet housing; then start the electric push rod three, which moves the two locking brackets outward to apply tension to the housing, while the tension force value is monitored in real time by the tension force sensor. S3: Start the electric push rod two, which drives the support arm and vertical milling cutter to feed linearly along the guide groove through the linkage transmission assembly. At the same time, start the servo motor to drive the vertical milling cutter to rotate and mill a pre-cut groove on the housing. Then the vertical milling cutter resets and exits the pre-cut groove. S4: Start the electric push rod one to lower the cutting blade into the pre-cutting groove, start the drive motor two to drive the cutting blade to rotate, and cut the shell along the pre-cutting groove and guide groove. At the same time, start the drive motor one to drive the movable base to move laterally, which in turn moves the cutting blade laterally to cut the shell. During the cutting process, the tension force is dynamically adjusted according to the cutting progress through the feedback of the tension force sensor. The tension force is released after the cutting is completed.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By cooperating with the electric push rod 2, movable support block 1, connecting rod 1, connecting rod 2, connecting rod 3, support rod 1, support rod 2, support rod 3, support block, support arm, servo motor, vertical milling cutter, and guide groove, the electric push rod 2 drives the movable support block 1 to slide horizontally before the cutting disc initially contacts the distribution cabinet housing. Through the linkage transmission assembly composed of connecting rod 1, connecting rod 2, connecting rod 3, support rod 1, support rod 2, support rod 3, and support block, the support arm, servo motor, and vertical milling cutter are driven to feed linearly along the guide groove, milling a pre-cut groove on the housing. This ensures that the cutting disc receives precise physical guidance and limitation after entering the pre-cut groove, effectively preventing wobbling and deflection caused by lack of alignment when the cutting disc enters, improving cutting accuracy and cut quality. This solves the problem of wobbling and deflection and uneven cuts caused by lack of guidance when the cutting disc enters the existing distribution cabinet housing cutting device, achieving the effect of improving the cutting accuracy of the distribution cabinet housing.

[0016] 2. Through the coordinated operation of the locking bracket, movable clamping plate, pressing rod, movable rod one, movable rod two, movable rod three, crossbar one, movable support arm, sliding bracket, electric push rod four, crossbar two, electric push rod three, positioning frame, limit slider two, sliding support rod, tension sensor, and PLC controller, the sliding bracket can be driven by electric push rod four to slide along the movable support arm before cutting begins. The linkage of movable rod one, movable rod two, and movable rod three then drives the pressing rod and movable clamping plate downwards, clamping the front and rear ends of the distribution cabinet housing. Electric push rod three drives the positioning frame and limit slider two to move outwards along the sliding support rod, causing the two locking mechanisms to engage. The support is relatively far away, applying tension to the housing. At the same time, a tension sensor embedded inside the positioning frame detects the tension in real time and feeds it back to the PLC controller. The tension is dynamically adjusted according to the different stages of the cutting blade's entry, middle, and exit. The actively applied tension counteracts the disturbance caused by the cutting force on the housing in real time, suppressing the vibration and deformation of the housing during the cutting process. After cutting, the tension is released to reduce the rebound deformation of the housing. This solves the problems of existing power distribution cabinet housing cutting devices, such as the difficulty in real-time counteracting of cutting force disturbances by static clamping and the lack of real-time monitoring and dynamic adjustment of tension, thus improving the cutting stability of the power distribution cabinet housing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a rear view schematic diagram of the connection structure between the fixing bracket and the base plate of the present invention; Figure 3 A bottom view schematic diagram of the connection structure between the movable base and the stabilizing support plate of the present invention; Figure 4 This is a schematic diagram of the connection structure between the active support block and the connecting frame of the present invention; Figure 5 This is a schematic diagram of the connection structure between connecting rod one and connecting rod two of the present invention; Figure 6 This is a bottom view schematic diagram of the connection structure between the limiting slider 2 and the sliding support rod of the present invention; Figure 7 This is a schematic diagram of the connection structure between the pressure rod and the movable rod one of the present invention; Figure 8 This is a schematic diagram of the connection structure between the active support block 2 and the active hole of the present invention.

[0018] In the diagram: 1. Base plate; 2. Guide groove; 3. Support bracket; 4. Support frame; 5. Mounting baffle; 6. Locking bracket; 7. Support groove; 8. Movable wheel; 9. Drive motor one; 10. Limiting rod; 11. Ball screw; 12. Movable base; 13. Fixed bracket; 14. Limiting bracket; 15. Electric push rod one; 16. Stabilizing support plate; 17. Mounting side plate; 18. Support roller; 19. Drive motor two; 20. Cutting disc; 21. Locking nut; 22. Electric push rod two; 23. Connecting frame; 24. Movable support block one; 25. Support arm; 26. Servo motor; 27. Vertical milling cutter; 28. Fixed plate; 29. ​​Connecting arm; 30. Limiting slide. 31. Rail; 32. Limiting slider one; 33. Connecting rod one; 34. Connecting rod two; 35. Connecting rod three; 36. Support rod one; 37. Support rod two; 38. Electric push rod three; 39. Positioning frame; 40. Tension sensor; 41. Support hole; 42. Sliding support rod; 43. Limiting slider two; 44. Positioning plate; 45. Movable clamping plate; 46. Support block; 47. Pressing rod; 48. Movable rod one; 49. Movable rod two; 50. Movable rod three; 51. Crossbar one; 52. Movable support arm; 53. Sliding bracket; 54. Electric push rod four; 55. Crossbar two; 56. Mounting support plate; 57. Movable hole; 58. Movable support block two. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In one typical implementation of this application, please refer to Figures 1 to 8 A casing cutting device for processing power distribution cabinets includes a base plate 1. A guide groove 2 is provided on the top surface of the base plate 1. The guide groove 2 extends along the length direction of the base plate 1 and is used to provide guiding space for the movement of the cutting blade 20 and the vertical milling cutter 27. The debris generated from cutting the casing of the power distribution cabinet is also discharged through the guide groove 2. A cutting mechanism is provided on the top surface of substrate 1 for cutting the distribution cabinet housing; a pre-cutting mechanism is provided on the left side of substrate 1 to cooperate with the cutting mechanism to open a pre-cut groove in the distribution cabinet housing, facilitating the cutting mechanism to cut the distribution cabinet housing; a tensioning clamping structure is also provided on substrate 1 to clamp the distribution cabinet housing and apply appropriate tension force at both ends. A PLC controller is fixedly installed on the front side of substrate 1 for realizing automated control.

[0021] The pre-cutting mechanism includes a fixed bracket 13, a connecting frame 23, a movable support block 1 24, an electric push rod 22, a support arm 25, a servo motor 26, a vertical milling cutter 27, and a linkage transmission assembly consisting of a connecting rod 1 32, a connecting rod 2 33, a connecting rod 3 34, a support rod 1 35, a support rod 2 36, a support rod 3 37, and a support block 46.

[0022] The fixed bracket 13 is fixedly installed on the left side of the base plate 1, and the connecting frame 23 is fixedly installed on the top surface of the fixed bracket 13, with a horizontally extending slide rail formed inside. The movable support block 24 is slidably connected in the internal slide rail of the connecting frame 23. The outer wall of the movable support block 24 is clearance-fitted with the inner wall of the connecting frame 23, allowing the movable support block 24 to slide freely in the horizontal direction within the connecting frame 23. At the same time, the inner wall of the connecting frame 23 provides guidance and limitation for the sliding of the movable support block 24, ensuring the straightness of its movement.

[0023] Electric actuator 22 is fixedly installed on the outer left side of connecting frame 23. The telescopic shaft of electric actuator 22 extends horizontally, its end penetrating the left side wall of connecting frame 23 and extending into the interior of connecting frame 23, where it is fixedly connected to the left side of movable support block 24. Electric actuator 22 serves as the first driving component; the extension and retraction of its telescopic shaft drives movable support block 24 to slide reciprocally horizontally within connecting frame 23. Electric actuator 22 is electrically connected to a PLC controller, which controls its start / stop, extension / retraction direction, and extension / retraction speed.

[0024] A servo motor 26 is mounted on the top surface of the base plate 1. A vertical milling cutter 27 is fixedly mounted on the bottom surface of the drive shaft of the servo motor 26. The lower end of the vertical milling cutter 27 extends into the guide groove 2, and the diameter of the vertical milling cutter 27 is smaller than the opening width of the guide groove 2, so as to ensure that the vertical milling cutter 27 can move freely along its length within the guide groove 2 without interfering with the inner wall of the guide groove 2. A support arm 25 is fixedly mounted on the top surface of the servo motor 26 by bolts, which supports the servo motor 26 and the vertical milling cutter 27 and drives them to move synchronously. The servo motor 26 is electrically connected to the PLC controller, which controls its start, stop, and speed.

[0025] The linkage drive assembly is connected between the movable support block 24 and the support arm 25, and is used to convert the horizontal sliding of the movable support block 24 into the linear feed motion of the support arm 25 driving the servo motor 26 and the vertical milling cutter 27 along the direction of the guide groove 2. Specifically: The front and rear sides of the activity support block 24 are rotatably connected to the connecting rod 32 via a pivot. The lower end of the connecting rod 32 is a free end, which can swing around the pivot at the upper end in the vertical plane.

[0026] Connecting rod 2 33 is rotatably connected to the side of connecting rod 1 32 (i.e., the middle position of the rod body) via a pivot. Connecting rod 2 33 is inclined upward and its upper end extends upward. Connecting rod 34 is rotatably connected to the lower end (i.e., the free end) of connecting rod 1 32 via a pivot. Connecting rod 34 is inclined upward and its upper end is parallel to connecting rod 2 33.

[0027] A support block 46 is fixedly installed on the right side wall of the connecting frame 23. The rod body of the second connecting rod 33 is rotatably connected to the support block 46 through a pivot, that is, the second connecting rod 33 can rotate in the vertical plane around the pivot connecting it to the support block 46. Since the support block 46 is fixed to the connecting frame 23, the movement of the second connecting rod 33 at this pivot is constrained.

[0028] Support rods 35 are rotatably connected to the front and rear side walls of the support arm 25 via pivots. They are inclined downwards, meaning that the upper end of the support rod 35 is rotatably connected to the side wall of the support arm 25 via pivots, and the lower end of the support rod 35 extends downwards.

[0029] Support rod 2 36 is rotatably connected to the side (middle position) of support rod 1 35 via a pivot. The body of support rod 2 36 is rotatably connected to the side of support arm 25 via a pivot, that is, the middle position of support rod 2 36 is rotatably connected to the side wall of support arm 25 via a pivot. The upper end of support rod 2 36 is rotatably connected to the upper end of connecting rod 2 33 via a pivot, thereby linking the upper end of connecting rod 2 33 with the upper end of support rod 2 36.

[0030] The lower end of support rod 1 35 is rotatably connected to support rod 37 via a pivot, and support rod 37 is arranged parallel to support rod 2 36. The upper end of connecting rod 34 is rotatably connected to the side of support rod 37 via a pivot, and the upper end of support rod 37 is rotatably connected to the side of connecting rod 2 33 via a pivot.

[0031] Through the aforementioned connections, connecting rod 1 (32), connecting rod 2 (33), connecting rod 3 (34), support rod 1 (35), support rod 2 (36), support rod 3 (37), and support block 46 together constitute a multi-link linkage mechanism. Support block 46 serves as a fixed hinge point (i.e., a fixed pivot point) to constrain the movement of connecting rod 2 (33), movable support block 1 (24) acts as the driving element to input movement, and support arm 25 acts as the driven element to output movement.

[0032] To ensure the stability of the support arm 25's movement, two fixing plates 28 are fixedly installed on the top surface of the base plate 1, with the two fixing plates 28 respectively positioned on the front and rear sides of the support arm 25. Limiting slide rails 30 are fixedly installed on the opposing side walls of the two fixing plates 28. The limiting slide rails 30 extend horizontally, parallel to the length direction of the guide groove 2. A limiting slider 31 is slidably connected to the limiting slide rail 30, and the limiting slider 31 can slide freely along the length direction of the limiting slide rail 30. Connecting arms 29 are fixedly installed on the front and rear side walls of the support arm 25. The connecting arms 29 have an S-shaped structure, with their left ends fixedly connected to the side of the limiting slider 31. When the support arm 25 moves, the connecting arms 29 drive the limiting slider 31 to slide synchronously along the limiting slide rail 30. The cooperation between the limiting slide rail 30 and the limiting slider 31 provides precise guidance and stable support for the movement of the support arm 25.

[0033] The operation of the pre-cutting mechanism is automatically controlled by a PLC controller, specifically including the following stages: I. Pre-cut groove processing stage After the staff places the power distribution cabinet housing on the top surface of the base plate 1 and clamps it in place, the PLC controller first sends a start command to the servo motor 26. The drive shaft of the servo motor 26 begins to rotate at high speed, driving the vertical milling cutter 27, which is fixedly mounted at the end of its drive shaft, to rotate synchronously at high speed, so that the vertical milling cutter 27 reaches the predetermined cutting speed.

[0034] After the vertical milling cutter 27 reaches the predetermined speed, the PLC controller sends an extension command to the electric actuator 22. The telescopic shaft of the electric actuator 22 begins to extend outward, pushing the movable support block 24 to slide horizontally to the left inside the connecting frame 23.

[0035] When the movable support block 24 slides horizontally to the left, it drives the connecting rod 32, which is rotatably connected to the front and rear sides of the movable support block 24, to move synchronously. The upper end of the connecting rod 32 moves to the left along with the movable support block 24. Since the body of the connecting rod 32 is rotatably connected to the connecting rod 33 via a pivot, and the connecting rod 33 is rotatably connected to the support block 46 fixed on the connecting frame 23 via a pivot, the support block 46 acts as a fixed hinge point, restricting the movement of the connecting rod 33 at this position. Therefore, when the upper end of the connecting rod 32 moves to the left, the lower end of the connecting rod 32 (i.e., the end rotatably connected to the connecting rod 34) rotates to the right. The rightward rotation of the lower end of the connecting rod 32 causes the connecting rod 34 to move to the right.

[0036] Since connecting rod 2 33 and connecting rod 3 34 are parallel to each other, and the upper end of connecting rod 2 33 is rotatably connected to the upper end of support rod 2 36, and the upper end of connecting rod 3 34 is rotatably connected to the body of support rod 3 37, when connecting rod 3 34 moves to the right, it drives support rod 2 36 to rotate to the right synchronously through support rod 3 37, which is rotatably connected to it.

[0037] The body of support rod 26 is rotatably connected to the side wall of support arm 25 via a pivot, and the upper end of support rod 26 is rotatably connected to the upper end of connecting rod 23. When support rod 26 rotates to the right, its lower end (i.e., the end rotatably connected to support rod 1 35) swings to the right, causing the upper end of support rod 1 35 to rotate to the right. Since the upper end of support rod 1 35 is rotatably connected to the side wall of support arm 25 via a pivot, the rightward rotation of the upper end of support rod 1 35 causes support arm 25 to move to the right.

[0038] When the support arm 25 moves to the right, it drives the servo motor 26, which is fixedly mounted on its bottom surface, and the vertical end mill 27, which is fixedly mounted on the end of the drive shaft of the servo motor 26, to move synchronously to the right. While rotating at high speed, the vertical end mill 27 feeds linearly to the right along the length of the guide groove 2. During the feeding process, the support arm 25 drives the limiting slider 31 to slide along the limiting slide rail 30 via the S-shaped connecting arm 29. The cooperation between the limiting slide rail 30 and the limiting slider 31 provides precise guidance for the linear feed of the vertical end mill 27, ensuring that the vertical end mill 27 moves strictly along the length of the guide groove 2.

[0039] When the vertical milling cutter 27 moves to the right and contacts the pre-cut groove to be machined on the distribution cabinet housing, the high-speed rotating vertical milling cutter 27 mills the bottom surface of the distribution cabinet housing. While rotating, the vertical milling cutter 27 continues to feed to the right, milling a straight pre-cut groove with a certain width and depth on the bottom surface of the distribution cabinet housing. The width of the pre-cut groove is determined by the diameter of the vertical milling cutter 27, and the depth of the pre-cut groove is determined by the length of the vertical milling cutter 27 extending downward into the guide groove 2 and the height position of the servo motor 26 and the support arm 25.

[0040] When the telescopic shaft of the electric linear actuator 22 extends to the predetermined stroke, the vertical milling cutter 27 completes the full-length machining of the pre-cut groove. The PLC controller sends a stop extension command to the electric linear actuator 22, and the telescopic shaft of the electric linear actuator 22 remains in the extended position.

[0041] II. Reset Exit Phase After the pre-cut groove is processed, the PLC controller sends a retraction command to the electric push rod 22. The telescopic shaft of the electric push rod 22 begins to retract inward, causing the movable support block 24 to slide horizontally to the right inside the connecting frame 23.

[0042] When the active support block 24 slides horizontally to the right, the upper end of the support rod 35 rotates to the left through the reverse linkage of the linkage transmission assembly (i.e., the reverse process of the above motion transmission process), thereby causing the support arm 25 to move to the left. When the support arm 25 moves to the left, it drives the servo motor 26 and the vertical milling cutter 27 to move to the left synchronously, causing the vertical milling cutter 27 to retract from the pre-cut groove.

[0043] When the telescopic shaft of the electric push rod 22 is fully retracted and reset, the movable support block 24, support arm 25, servo motor 26 and vertical milling cutter 27 all return to their initial positions. The vertical milling cutter 27 completely exits the pre-cut groove and waits for the next pre-cut groove machining operation.

[0044] During this process, through a multi-link linkage mechanism consisting of connecting rod 1 32, connecting rod 2 33, connecting rod 3 34, support rod 1 35, support rod 2 36, support rod 3 37, and support block 46, the horizontal telescopic motion of electric push rod 22 is precisely converted into the linear feed motion of support arm 25 along guide groove 2. This ensures that the vertical milling cutter 27 moves strictly in a straight line during the feed process, thereby machining a pre-cut groove with high straightness on the distribution cabinet housing. The cooperation of limit slide rail 30 and limit slider 1 31 further ensures the straightness of the movement of support arm 25 and vertical milling cutter 27, preventing the pre-cut groove from bending or shifting due to movement skew.

[0045] The pre-cut groove machined by the vertical milling cutter 27 has precise width and straightness, and its width is adapted to the thickness of the cutting blade 20. When the cutting blade 20 enters the pre-cut groove in subsequent cutting processes, the two side walls of the pre-cut groove limit and guide the cutting blade 20. Under the constraint of the pre-cut groove, the cutting direction of the cutting blade 20 is strictly limited to the extension direction of the pre-cut groove, effectively avoiding radial wobble or axial sway caused by the lack of limiting when the cutting blade 20 initially contacts the distribution cabinet housing. This improves the positional and directional accuracy of the cutting blade 20 entering the housing, thereby improving the machining accuracy of the entire cutting process.

[0046] Furthermore, due to the guiding effect of the pre-cutting groove, the cutting blade 20 will not experience abnormal lateral contact or impact with the housing due to shaking when cutting into it, thus reducing lateral wear and abnormal chipping of the cutting blade 20. At the same time, the pre-cutting groove has already removed a portion of the material, reducing the actual amount of material removed by the cutting blade 20 during cutting, lowering the cutting load, and helping to extend the service life of the cutting blade 20.

[0047] The tensioning clamping structure includes two mounting baffles 5, two locking brackets 6, a clamping assembly, a tensioning assembly, and a tension force sensor 40.

[0048] Two mounting baffles 5 are fixedly installed on the front and rear sides of the base plate 1, respectively. Each mounting baffle 5 has a locking bracket 6 slidably connected to its top surface. The locking bracket 6 has a U-shaped structure, and the openings of the two locking brackets 6 are arranged opposite to each other to accommodate the end of the distribution cabinet housing.

[0049] The bottom surface of the locking bracket 6 is fixedly installed with a limiting slider 43. The bottom surface of the mounting baffle 5 is provided with a support hole 41, and a sliding support rod 42 is fixedly installed inside the support hole 41. The limiting slider 43 is slidably connected to the sliding support rod 42, so that the locking bracket 6 can slide smoothly on the mounting baffle 5 along the axial direction of the sliding support rod 42.

[0050] Two electric actuators 38 are fixedly mounted on the bottom surface of the substrate 1. A positioning frame 39 is fixedly mounted between the telescopic shaft of the electric actuators 38 and the side of the limiting slider 43. A tension sensor 40 is embedded inside the positioning frame 39. The electric actuators 38, positioning frame 39, tension sensor 40, limiting slider 43, and sliding support rod 42 together constitute the tensioning assembly.

[0051] A clamping assembly is mounted on the locking bracket 6 and is used to clamp or release the end of the distribution cabinet housing located within the locking bracket 6. Specifically, a movable clamping plate 45 is slidably connected inside the locking bracket 6, and a downward pressure rod 47 is fixedly mounted on the top surface of the movable clamping plate 45. The upper end of the downward pressure rod 47 passes through the locking bracket 6 and extends to the top surface of the locking bracket 6. Movable rods 48 are rotatably connected to both sides of the downward pressure rod 47 via pivots.

[0052] Two positioning plates 44 are fixedly installed on the top surface of the locking bracket 6. A crossbar 51 is rotatably connected between the two positioning plates 44 via a pivot. A movable rod 50 is fixedly sleeved on the outer circular wall of the crossbar 51. The lower end of the movable rod 50 is rotatably connected to the upper ends of the two movable rods 48 via a pivot. A crossbar 55 is also rotatably connected between the two positioning plates 44 via a pivot. A movable support arm 52 is fixedly sleeved on the outer circular wall of the crossbar 55. The movable support arm 52 has an L-shaped structure, and the crossbar 55 is located at the corner of the movable support arm 52. Movable rods 49 are rotatably connected to both sides of the movable support arm 52 via pivots. The front end of the movable rod 49 is coaxially connected to the upper end of the movable rod 48 and the lower end of the movable rod 50.

[0053] A sliding bracket 53 is slidably connected to the movable support arm 52. A mounting plate 56 is fixedly installed on the rear side of the locking bracket 6. An electric push rod 54 is fixedly installed on the top surface of the mounting plate 56. The top surface of the telescopic shaft of the electric push rod 54 is fixedly connected to the bottom surface of the sliding bracket 53. A connecting shaft is fixedly installed inside the sliding bracket 53. A rectangular hole is opened on the movable support arm 52. The connecting shaft slides inside the rectangular hole, thereby realizing the sliding engagement between the sliding bracket 53 and the movable support arm 52.

[0054] To further ensure the stability of the movable clamping plate 45, two movable holes 57 are provided on both sides of the two locking brackets 6 facing each other. Movable support blocks 58 are fixedly installed on both sides of the two movable clamping plates 45 facing each other, and the movable support blocks 58 are slidably connected to the movable holes 57. When the movable clamping plate 45 moves inside the locking bracket 6, the movable support blocks 58 move synchronously inside the movable holes 57. The movable support blocks 58 and the movable holes 57 cooperate to restrict the direction of movement of the movable clamping plate 45, ensuring the vertical lifting and lowering of the movable clamping plate 45.

[0055] In the above features, after the staff places the power distribution cabinet housing on the top surface of the base plate 1, the front and rear ends of the power distribution cabinet housing are respectively placed inside the two locking brackets 6.

[0056] The PLC controller activates the electric push rod 54, causing its telescopic shaft to move downwards, which in turn drives the sliding bracket 53 to slide downwards along the rear end of the movable arm 52. Because the connecting shaft inside the sliding bracket 53 slides within the rectangular hole of the movable arm 52, the front end of the movable arm 52 rotates upwards around the crossbar 55. This upward rotation of the front end of the movable arm 52 causes the movable rod 49 to rotate upwards, which in turn causes the movable rods 50 and 48 to rotate inwards. This inward rotation of the movable rods 50 and 48 causes the pressing rod 47 to move downwards, which in turn causes the movable clamping plate 45 to move downwards. The movable clamping plate 45 then engages with the inner bottom surface of the locking bracket 6, thereby clamping the end of the distribution cabinet housing between the movable clamping plate 45 and the bottom surface of the locking bracket 6.

[0057] After the front and rear ends of the distribution cabinet housing are clamped, the PLC controller controls the two electric push rods 38 to start. The telescopic shafts of the two electric push rods 38 move outward relative to each other, causing the positioning frame 39 and the limiting slider 43 to move outward. The limiting slider 43 slides outward along the sliding support rod 42 inside the support hole 41 on the mounting baffle 5. The outward movement of the limiting slider 43 causes the locking bracket 6 to move outward, thereby applying tension to the front and rear ends of the distribution cabinet housing.

[0058] During the application of tension, the tension sensor 40 inside the positioning frame 39 detects the magnitude of the tension in real time and feeds back the detection signal to the PLC controller. Based on the feedback signal from the tension sensor 40, the PLC controller controls the extension and retraction of the electric push rod 38 to achieve precise control of the tension.

[0059] Before cutting begins, tension is applied to bring the housing into a slightly deformed state. After cutting, the tension is released to reduce springback. During the cutting process, the tension is dynamically adjusted based on the entry, middle, and exit progress of the cutting blade 20, using feedback from the tension sensor 40 to achieve optimal control. By actively applying tension to counteract the cutting force, the stability of the distribution cabinet housing during the cutting process is effectively ensured.

[0060] The cutting mechanism includes two support brackets 3, a support frame 4, a movable base 12, a drive motor 9, a ball screw 11, a limit rod 10, a stabilizing support plate 16, a mounting side plate 17, a support roller 18, a cutting disc 20, a drive motor 19, a locking nut 21, and an electric push rod 15.

[0061] Two support brackets 3 are fixedly installed on the top surface of the base plate 1, and a support frame 4 is installed between the two support brackets 3 by bolts. A movable base 12 is slidably connected inside the support frame 4, and the movable base 12 can slide freely in the horizontal direction within the support frame 4.

[0062] A drive motor 9 is fixedly mounted on the right side of the support frame 4. A ball screw 11 is rotatably connected to the inside of the support frame 4 via bearings, and the ball screw 11 is threadedly connected to the movable base 12. A limit rod 10 is also fixedly mounted inside the support frame 4, and the movable base 12 is slidably connected to the limit rod 10. One end of the drive shaft of the drive motor 9 passes through the support frame 4 and is fixedly connected to the right end of the ball screw 11. When the drive motor 9 starts, its drive shaft rotates, causing the ball screw 11 to rotate. The rotation of the ball screw 11 is converted into linear motion of the movable base 12 along the axial direction of the ball screw 11. The limit rod 10 provides guidance and limitation for the movement of the movable base 12.

[0063] An electric push rod 15 is fixedly installed on the top surface of the movable base 12. The telescopic shaft of the electric push rod 15 passes through the movable base 12 and extends downward. The end of the telescopic shaft of the electric push rod 15 is fixedly connected to the top surface of the stabilizing support plate 16. A mounting side plate 17 is fixedly installed on the bottom surface of the stabilizing support plate 16.

[0064] A support roller 18 is rotatably connected to the right side of the mounting side plate 17, and a cutting blade 20 is movably fitted onto the outer circular wall of the support roller 18. A locking nut 21 is threaded onto the outer circular wall of the support roller 18, which locks the cutting blade 20 onto the support roller 18 to prevent it from sliding relative to the support roller 18 during rotation. A second drive motor 19 is mounted on the left side of the mounting side plate 17, with one end of its drive shaft passing through the mounting side plate 17 and fixedly connected to one end of the support roller 18. When the second drive motor 19 starts, its drive shaft rotates, causing the support roller 18 and the cutting blade 20 to rotate synchronously.

[0065] Specifically, after the pre-cutting mechanism completes the machining of the pre-cut groove and the vertical milling cutter 27 exits the pre-cut groove, the PLC controller controls the electric push rod 15 to start. The telescopic shaft of the electric push rod 15 extends downward, driving the stabilizing support plate 16 and the mounting side plate 17 to move downward. The downward movement of the stabilizing support plate 16 and the mounting side plate 17 drives the cutting blade 20 to move downward until the lower edge of the cutting blade 20 enters the interior of the pre-cut groove. At this time, the cutting blade 20 is guided and limited by the pre-cut groove.

[0066] The PLC controller starts the drive motor 19, and the drive shaft of the drive motor 19 rotates, causing the support roller 18 and the cutting blade 20 to rotate. The cutting blade 20 cuts the distribution cabinet housing along the pre-cut groove and the guide groove 2. The guiding effect of the pre-cut groove effectively prevents the shaking caused by the lack of limit when the cutting blade 20 initially contacts the distribution cabinet housing, thus improving the cutting accuracy of the distribution cabinet housing.

[0067] Simultaneously, the PLC controller starts the drive motor 9, and the drive shaft of the drive motor 9 rotates, causing the ball screw 11 to rotate. The rotation of the ball screw 11 causes the movable base 12 to move horizontally along the direction of the ball screw 11 and the limit rod 10. The horizontal movement of the movable base 12 causes the cutting blade 20 to move laterally, thereby completely cutting off the distribution cabinet housing.

[0068] Two limiting brackets 14 are bolted to the top surface of the substrate 1, and the two limiting brackets 14 are located on the front and rear sides of the guide groove 2. When the distribution cabinet housing is placed on the top surface of the substrate 1, the operator abuts one side of the distribution cabinet housing against the side of the two limiting brackets 14, which facilitates quick positioning of the distribution cabinet housing and ensures that the housing is placed in the same position each time it is cut.

[0069] The top surface of the substrate 1 has several support grooves 7, and the inside of the support grooves 7 is rotatably connected to the movable wheels 8 via a rotating shaft. After the operator places the distribution cabinet housing on the top surface of the substrate 1, the movement of the distribution cabinet housing on the substrate 1 will drive the movable wheels 8 to rotate inside the support grooves 7. The rolling of the movable wheels 8 replaces the sliding friction between the housing and the substrate 1, thereby facilitating the movement of the distribution cabinet housing by the operator and reducing labor intensity.

[0070] A PLC controller is fixedly mounted on the front side of the base plate 1. The PLC controller is electrically connected to the electric push rod 22, servo motor 26, drive motor 9, drive motor 19, electric push rod 15, electric push rod 38, electric push rod 44 and tension sensor 40 in this device.

[0071] The PLC controller receives the tension signal from the tension sensor 40 and automatically controls each electric push rod and drive motor according to the preset control logic.

[0072] Specifically, the PLC controller controls the extension and retraction of the second electric push rod 22 to drive the pre-cutting mechanism, controls the start, stop and speed of the servo motor 26 to drive the vertical milling cutter 27 to rotate, controls the start, stop and direction of the first drive motor 9 to drive the movable base 12 to move horizontally, controls the start, stop and speed of the second drive motor 19 to drive the cutting blade 20 to rotate, controls the extension and retraction of the first electric push rod 15 to drive the cutting blade 20 to rise and fall, controls the extension and retraction of the third electric push rod 38 to apply or release tension, and controls the extension and retraction of the fourth electric push rod 54 to drive the movable clamping plate 45 to clamp or release the housing.

[0073] As a preferred embodiment of this example, please refer to [link / reference]. Figures 1 to 8 The present invention also provides a method for cutting the housing of a power distribution cabinet, which is used in the above-mentioned device for cutting the housing of a power distribution cabinet, and includes the following steps: Step 1: Housing Placement and Positioning The distribution cabinet housing is placed on the top surface of the base plate 1, with one side of the housing abutting against the sides of the two limiting brackets 14 for positioning. Simultaneously, the front and rear ends of the housing are positioned inside the two locking brackets 6. During placement, as the housing moves on the base plate 1, it drives the movable wheels 8 to rotate within the support grooves 7. The rolling of the movable wheels 8 assists in the movement of the housing, facilitating operation by staff.

[0074] Step Two: Clamping and Tensioning Activating the electric push rod 4 (54) causes its telescopic axis to move downwards, driving the sliding bracket 53 to slide downwards along the rear end of the movable support arm 52. This causes the front end of the movable support arm 52 to rotate upwards around the crossbar 2 (55). The upward rotation of the front end of the movable support arm 52 causes the movable rod 2 (49) to rotate upwards, causing the movable rod 3 (50) and movable rod 1 (48) to rotate inwards. This causes the pressing rod 47 to move downwards, which in turn causes the movable clamping plate 45 to move downwards. The movable clamping plate 45 then engages with the inner bottom surface of the locking bracket 6, thereby clamping the front and rear ends of the distribution cabinet housing.

[0075] The two electric actuators 38 are activated, causing their telescopic shafts to move outward relative to each other, thus moving the positioning frame 39 and the limiting slider 43 outward. The limiting slider 43 moves outward along the sliding support rod 42 inside the support hole 41 on the mounting baffle 5. This outward movement of the limiting slider 43 causes the locking bracket 6 to move outward, thereby applying tension to both ends of the distribution cabinet housing. Simultaneously, the tension sensor 40 inside the positioning frame 39 monitors the tension on the distribution cabinet housing in real time and feeds the signal back to the PLC controller.

[0076] Before cutting begins, tension is applied to put the shell in a slightly deformed state; during the cutting process, the tension is dynamically adjusted based on the cutting progress of the cutting blade 20, through feedback from the tension sensor 40; after cutting is completed, the tension is released to reduce springback.

[0077] Step 3: Pre-cut groove processing steps Start the electric push rod 22. The extension shaft of the electric push rod 22 extends, causing the movable support block 24 to move to the left. The leftward movement of the movable support block 24 causes the upper end of the connecting rod 32 to rotate to the left and its lower end to rotate to the right. The rightward rotation of the lower end of the connecting rod 32 causes the connecting rods 33 and 34 to rotate to the right. The rotation of the connecting rods 33 and 34 causes the support rods 36 and 37 to rotate to the right. The rightward rotation of the support rods 36 and 37 causes the upper end of the support rod 35 to rotate to the right, causing the support arm 25 to drive the servo motor 26 and the vertical milling cutter 27 to move to the right.

[0078] Simultaneously, the servo motor 26 is activated, and its drive shaft rotates, causing the vertical milling cutter 27 to rotate. The vertical milling cutter 27 rotates and moves to the right to mill the distribution cabinet housing, thus creating a pre-cut groove on the housing. As the support arm 25 drives the servo motor 26 and the vertical milling cutter 27 to move to the right, the connecting arm 29 drives the limiting slider 31 to move along the limiting slide rail 30, providing stable guidance for the movement of the servo motor 26 and the vertical milling cutter 27.

[0079] After the pre-cut groove is processed, the telescopic shaft of the electric push rod 22 retracts and resets, driving the servo motor 26 and the vertical milling cutter 27 to reset to the left and exit the pre-cut groove.

[0080] Step 4: Cutting Steps Start the electric push rod 15. The telescopic shaft of the electric push rod 15 extends downward, causing the stabilizing support plate 16 and the mounting side plate 17 to move downward. The downward movement of the stabilizing support plate 16 and the mounting side plate 17 causes the cutting blade 20 to move downward until the cutting blade 20 moves downward and enters the interior of the pre-cutting groove.

[0081] Start the second drive motor 19. The drive shaft of the second drive motor 19 rotates, causing the support roller 18 and the cutting blade 20 to rotate. The cutting blade 20 cuts the distribution cabinet housing along the pre-cut groove and the guide groove 2. The guiding effect of the pre-cut groove prevents the cutting blade 20 from shaking when it first contacts the distribution cabinet housing, thus improving the cutting accuracy of the distribution cabinet housing.

[0082] At the same time, drive motor 9 is started. The drive shaft of drive motor 9 rotates, which drives ball screw 11 to rotate. The rotation of ball screw 11 causes movable base 12 to move along ball screw 11 and limit rod 10. The movement of movable base 12 causes cutting blade 20 to move laterally, thereby completely cutting off the power distribution cabinet housing.

[0083] After the cutting is completed, each electric push rod and drive motor resets according to the control instructions of the PLC controller, waiting for the next cutting operation.

[0084] 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. A casing cutting device for processing electrical distribution cabinets, characterized in that, include: The substrate (1) has a guide groove (2) on its top surface; A cutting mechanism is provided on the top surface of the substrate (1) for cutting the power distribution cabinet housing; A pre-cutting mechanism is provided on the base plate (1) and is used to mill a pre-cutting groove on the power distribution cabinet housing so that the cutting blade (20) of the cutting mechanism is guided after entering the pre-cutting groove, thereby reducing the shaking of the cutting blade (20) when it cuts in and improving the cutting accuracy and stability. A tensioning clamping structure is provided on the base plate (1) for clamping the power distribution cabinet housing and applying tension force to both ends thereto; The pre-cutting mechanism includes a fixed bracket (13), a connecting frame (23), a movable support block (24), a first driving component, a support arm (25), a servo motor (26), a vertical milling cutter (27), and a linkage transmission assembly; The fixed bracket (13) is fixed to the base plate (1), the connecting frame (23) is fixed to the fixed bracket (13), the movable support block (24) is slidably disposed in the connecting frame (23), and the first driving member is connected to the movable support block (24) to drive it to slide horizontally. The support arm (25) is slidably disposed above the substrate (1), the servo motor (26) is fixed to the support arm (25), and the vertical milling cutter (27) is fixed to the output shaft of the servo motor (26) and extends into the guide groove (2). The linkage transmission assembly is connected between the movable support block (24) and the support arm (25) to convert the horizontal sliding of the movable support block (24) into the support arm (25) driving the vertical milling cutter (27) to move linearly along the guide groove (2).

2. The casing cutting device for processing power distribution cabinets according to claim 1, characterized in that: The linkage transmission assembly includes a first connecting rod (32), a second connecting rod (33), a third connecting rod (34), a first supporting rod (35), a second supporting rod (36), a third supporting rod (37), and a support block (46); the upper end of the first connecting rod (32) is rotatably connected to the first movable support block (24), the second connecting rod (33) is rotatably connected to the middle part of the first connecting rod (32), the third connecting rod (34) is rotatably connected to the lower end of the first connecting rod (32), and the second connecting rod (33) and the third connecting rod (34) are arranged parallel to each other; the second connecting rod (33) is fixed to the first connecting rod (35), the second connecting rod (36), the third connecting rod (37), and the fourth connecting rod (46). The support block (46) of the connecting frame (23) is rotatably connected; the upper end of the first support rod (35) is rotatably connected to the support arm (25); the second support rod (36) is rotatably connected to the middle part of the first support rod (35), and its upper end is rotatably connected to the upper end of the second connecting rod (33); the third support rod (37) is rotatably connected to the lower end of the first support rod (35), and is arranged parallel to the second support rod (36); the upper end of the third connecting rod (34) is rotatably connected to the third support rod (37), and the upper end of the third support rod (37) is rotatably connected to the second connecting rod (33).

3. The casing cutting device for processing power distribution cabinets according to claim 1, characterized in that: The tensioning clamping structure includes two locking brackets (6), a clamping assembly, a tensioning assembly, and a tension force sensor (40). The two locking brackets (6) are slidably disposed on the front and rear sides of the base plate (1), with their openings facing each other, for accommodating the two ends of the distribution cabinet housing. The clamping assembly is disposed on the locking brackets (6) for clamping or releasing the ends of the distribution cabinet housing located within the locking brackets (6). The tensioning assembly is connected to the locking brackets (6) for driving the two locking brackets (6) to move away from or closer to each other to apply or release tension force. The tension force sensor (40) is disposed on the force transmission path between the tensioning assembly and the locking brackets (6) for real-time detection of tension force.

4. The casing cutting device for processing power distribution cabinets according to claim 3, characterized in that: The tensioning assembly includes a mounting baffle (5), a limiting slider two (43), a sliding support rod (42), and an electric push rod three (38); the mounting baffle (5) is fixed to the base plate (1), and a support hole (41) is provided on its bottom surface. The sliding support rod (42) is fixed in the support hole (41). The limiting slider two (43) is slidably sleeved on the sliding support rod (42) and fixedly connected to the locking bracket (6); the electric push rod three (38) is fixed to the bottom surface of the base plate (1), and its telescopic shaft is connected to the limiting slider two (43) through a positioning frame (39); the tension sensor (40) is embedded in the positioning frame (39).

5. The casing cutting device for processing power distribution cabinets according to claim 3, characterized in that: The clamping assembly includes a movable clamping plate (45), a downward pressure rod (47), a first movable rod (48), a second movable rod (49), a third movable rod (50), a first crossbar (51), a movable support arm (52), a sliding bracket (53), a fourth electric push rod (54), and a second crossbar (55). The movable clamping plate (45) is slidably disposed inside the locking bracket (6), and the downward pressure rod (47) is fixed to the top surface of the movable clamping plate (45). The upper end of the downward pressure rod (47) passes through the locking bracket (6). The first crossbar (51) is rotatably connected between two positioning plates (44) on the top surface of the locking bracket (6), and the third movable rod (50) is fixedly sleeved on the first crossbar (51). The first movable rod (48) is rotatably connected to the left and right sides of the downward pressure rod (47), and the lower end of the third movable rod (50) is connected to the first crossbar (51). The upper ends of the two movable rods (48) are rotatably connected; the crossbar (55) is rotatably connected between the two positioning plates (44); the movable support arm (52) is an L-shaped structure and is fixedly sleeved on the crossbar (55); the crossbar (55) is located at the corner of the movable support arm (52); the movable rod (49) is rotatably connected to the left and right sides of the movable support arm (52); the front end of the movable rod (49) is coaxially connected to the upper end of the movable rod (48) and the lower end of the movable rod (50); the sliding bracket (53) is slidably connected to the movable support arm (52); the electric push rod (54) is fixed to the rear side of the locking bracket (6) by the mounting support plate (56); the telescopic shaft of the electric push rod (54) is fixedly connected to the bottom surface of the sliding bracket (53).

6. The casing cutting device for processing power distribution cabinets according to claim 1, characterized in that: The cutting mechanism includes a support frame (4), a movable base (12), a ball screw (11), a limiting rod (10), a first drive motor (9), a first electric push rod (15), a stabilizing support plate (16), a mounting side plate (17), a support roller (18), a cutting disc (20), and a second drive motor (19). The support frame (4) is fixed to the base plate (1), the movable base (12) is slidably disposed within the support frame (4), the ball screw (11) is rotatably connected within the support frame (4) and threadedly connected to the movable base (12), and the limiting rod (10) is fixed within the support frame (4) and slidably connected to the movable base (12). Next, the first drive motor (9) is fixed to the right side of the support frame (4) and its drive shaft is fixedly connected to the ball screw (11); the first electric push rod (15) is fixed to the top surface of the movable base (12), its telescopic shaft passes through the movable base (12) and is fixedly connected to the stabilizing support plate (16); the mounting side plate (17) is fixed to the bottom surface of the stabilizing support plate (16); the support roller (18) is rotatably connected to the mounting side plate (17); the cutting blade (20) is fixedly sleeved on the support roller (18); the second drive motor (19) is fixed to the mounting side plate (17) and its drive shaft is fixedly connected to the support roller (18).

7. The casing cutting device for processing power distribution cabinets according to claim 1, characterized in that: Two fixing plates (28) are fixed on the top surface of the substrate (1). The two fixing plates (28) are located on the front and rear sides of the support arm (25) respectively. Each fixing plate (28) is provided with a limiting slide rail (30). A limiting slider (31) is slidably connected on the limiting slide rail (30). The support arm (25) is fixedly connected to the limiting slider (31) through an S-shaped connecting arm (29).

8. The casing cutting device for processing power distribution cabinets according to claim 1, characterized in that: Two limiting brackets (14) are installed on the top surface of the substrate (1). The two limiting brackets (14) are located on the front and rear sides of the guide groove (2) and are used to laterally position the power distribution cabinet housing.

9. The casing cutting device for processing power distribution cabinets according to claim 1, characterized in that: The top surface of the base plate (1) is provided with several support grooves (7), and each support groove (7) is rotatably connected with a movable wheel (8) to assist the power distribution cabinet housing to move on the base plate (1).

10. A method for cutting the casing of a power distribution cabinet, used in any one of claims 1 to 9, characterized in that, Includes the following steps: S1: Place the power distribution cabinet housing on the base plate (1) so that one side of the power distribution cabinet housing abuts against the two limit brackets (14) for positioning, while the front and rear ends of the power distribution cabinet housing are respectively placed inside the two locking brackets (6). S2: Start the electric push rod four (54), which drives the movable clamp (45) to move downward and cooperate with the inner bottom surface of the locking bracket (6) to clamp the front and rear ends of the distribution cabinet housing; then start the electric push rod three (38), which drives the two locking brackets (6) to move outward and apply tension to the housing, while the tension value is monitored in real time by the tension sensor (40); S3: Start the electric push rod two (22), which drives the support arm (25) and the vertical milling cutter (27) to feed linearly along the guide groove (2) via the linkage transmission assembly. At the same time, start the servo motor (26) to drive the vertical milling cutter (27) to rotate, milling a pre-cut groove on the housing. Then the vertical milling cutter (27) resets and exits the pre-cut groove. S4: Start the electric push rod one (15) to lower the cutting blade (20) into the pre-cut groove, start the drive motor two (19) to drive the cutting blade (20) to rotate, and cut the shell along the pre-cut groove and guide groove (2). At the same time, start the drive motor one (9) to drive the movable base (12) to move laterally, and drive the cutting blade (20) to move laterally to cut the shell. During the cutting process, the tension force is dynamically adjusted according to the cutting progress through the feedback of the tension force sensor (40), and the tension force is released after the cutting is completed.

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