A cable corrugated pipe circumcision device and its control method

Abstract

The present invention discloses a circumferential cutting device for a cable corrugated pipe and a control method thereof. The device includes a machine shell and a positioning component coaxially arranged with the machine shell for clamping and fixing the cable. It further includes an annular track coaxially arranged with the machine shell and the positioning component in sequence, a rotating component rotating along the annular track, a driving component located inside the machine shell, a moving component connected to the rotating component, a cutting component located on the movable part of the moving component, a first laser rangefinder located on the movable part of the moving component, and a controller electrically connected to the driving component, the moving component, the cutting component and the first laser rangefinder. According to the characteristics that the cable corrugated pipe is spiral and the cross-section is non-circular, the present invention performs multiple segmented cutting on the corrugated pipe according to the outer peripheral contour of the cable. Compared with single circumferential cutting, it is beneficial to protect the shielding layer of the cable. Moreover, the present invention can realize the negative feedback closed-loop control of the cutting depth of a single segment, enabling the cutting circular saw to cut the cable corrugated pipe with high precision without damaging the shielding layer.

Description

Technical Field

[0001] The present invention relates to a circumferential cutting device and a control method thereof, and particularly to a circumferential cutting device for cable corrugated pipes and a control method thereof. Background Art

[0002] Power cables are cables used for transmitting and distributing electric energy. Power cables are commonly used in urban underground power grids, outgoing lines of power stations, internal power supply in industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. The basic structure of a power cable consists of four parts: a core (conductor), an insulating layer, a shielding layer, and a protective layer. The corrugated pipe for protecting the cable is a metal pipe with a spiral wave shape made of aluminum, which serves as a protective layer in the cable system. In order to connect between cable bodies or with a terminal system, it is necessary to perform stripping treatment on the cable, cut and remove the corrugated pipe outside the cable to achieve the connection between internal conductive segments. When cutting the corrugated pipe, it is required not to damage the shielding layer to prevent damage to the line.

[0003] Currently, when processing cables with a diameter of 50 - 150 mm, the cutting methods mainly include manual cutting and cutting by manually operating machine equipment. Manual cutting operations have low efficiency, poor reliability, and the cutting accuracy cannot be guaranteed; most of the existing cutting machine equipment only focuses on the cutting position of the corrugated pipe, while ignoring the accuracy of the cutting depth of the corrugated pipe. The actual operation requires a cutting accuracy of 0.05 mm, that is, the existing cutting methods cannot meet the requirements of only cutting and removing the corrugated pipe outside the cable and not damaging the shielding layer during cable stripping treatment. Summary of the Invention

[0004] Object of the Invention: The first object of the present invention is to provide a circumferential cutting device for cable corrugated pipes with high cutting accuracy and without damaging the cable shielding layer.

[0005] The second object of the present invention is to provide a control method for a circumferential cutting device for cable corrugated pipes.

[0006] Technical Solution: A circumferential cutting device for cable corrugated pipes disclosed by the present invention includes a machine shell and a positioning component coaxially arranged with the machine shell for clamping and fixing the cable. It also includes an annular track coaxially arranged with the machine shell and the positioning component in sequence, a rotating component that can rotate along the annular track, a driving component located inside the machine shell and used to drive the rotating component to rotate, a moving component connected to the rotating component and used to adjust the radial feed depth, a cutting component located on the moving part of the moving component and used to cut the cable, a first laser rangefinder located on the moving part of the moving component and used to measure the outer peripheral contour data of the cable, and a controller electrically connected to the driving component, the moving component, the cutting component, and the first laser rangefinder.

[0007] Further, the rotating assembly includes a wheel frame and two symmetrically arranged wheels rotatably connected to the wheel frame. The two wheels are respectively clamped on the outer track and the inner track of the annular track and are in rotational contact therewith. Among them, the driving assembly drives one wheel to rotate along the inner track of the annular track, and at the same time drives the other wheel to rotate along the outer track of the annular track through the wheel frame.

[0008] Further, the moving assembly includes two support blocks fixedly connected to the wheel frame, a lead screw rotatably installed between the two support blocks, a feed motor installed on the wheel frame and having an output shaft fixedly connected to the lead screw, a slider threadedly connected to the outer periphery of the lead screw, a second laser rangefinder installed on one side of the upper support block, and a reflector installed on the slider and cooperating with the second laser rangefinder to measure the actual moving distance of the slider.

[0009] Further, the Rockwell hardness of the wheel is ≥55.

[0010] Further, the driving assembly includes a driving motor installed inside the machine shell, a driving gear fixedly connected to the output shaft of the driving motor, a ring pipe fixedly connected to the inner wall of the machine shell and coaxially arranged with the annular track, a sun gear rotatably installed on the outer periphery of the ring pipe and meshingly connected to the driving gear, an internal gear fixedly connected to the inner wall of the machine shell and arranged on the outer periphery of the sun gear, a planetary gear meshingly connected to the sun gear and rotating along the internal teeth of the internal gear, and a driving shaft fixedly connected to the central axis of the planetary gear. One end of the driving shaft away from the planetary gear is fixedly connected to the central axis of the wheel located on the inner track of the annular track.

[0011] Further, the cutting assembly includes a cutting circular saw fixedly installed at the bottom of the slider and a rotating motor installed on the slider and having an output shaft connected to the cutting circular saw.

[0012] Further, the positioning assembly includes a support, a chuck body fixedly connected to the support and having a wire passing hole opened at the center for the cable to pass through, a movable chuck claw slidably connected to a plurality of annularly arrayed grooves opened on the inner wall of the wire passing hole, and a chuck driving mechanism arranged on one side of the chuck body for adjusting the movable chuck claw to clamp the cable.

[0013] Further, it further includes a support rod. Both ends and the middle of the support rod are provided with threads. A plurality of through holes are opened on the chuck body in an annular array distribution. One end of the support rod passes through the through hole and is threadedly connected to a nut on the other side of the chuck body. The middle of the support rod is threadedly connected to the machine shell, and the other end of the support rod passes through the machine shell and is threadedly connected to the annular track.

[0014] Based on the same inventive concept, the present invention also discloses a control method for a cable corrugated pipe cutting device, including the following steps:

[0015] S1: Adjust the cutting assembly to the zero position of the annular track;

[0016] S2: Clamp and fix the cable through the positioning assembly, and coaxialize the cable with the cable bellows cutting device;

[0017] S3: Drive the moving assembly and the cutting assembly to rotate around the annular track for one week, so that the first laser rangefinder scans the outer peripheral contour data of the cable and transmits the outer peripheral contour data of the cable to the controller;

[0018] S4: Adjust the cutting assembly to the zero position of the annular track again;

[0019] S5: The controller adjusts the rotation of the feed motor through the outer peripheral contour data of the cable to make the slider move along the diameter direction of the cable. At the same time, the controller realizes the negative feedback closed-loop control of the moving distance of the slider, so that the slider drives the cutting circular saw to move along the diameter of the cable to the maximum displacement and rotate to cut the cable;

[0020] S6: Adjust the feed motor through the controller to make the cutting circular saw return to the initial position;

[0021] S7: The controller adjusts the drive assembly according to the outer peripheral contour data of the cable, so that the rotating assembly moves a step distance on the annular track;

[0022] S8: Repeat steps S5 to S7 until the rotating assembly rotates around the annular track for one week and returns to the zero position of the annular track.

[0023] Further, the specific steps to implement the negative feedback closed-loop control in step S5 are as follows:

[0024] The controller obtains the standard distance of the slider movement through the outer peripheral contour data of the cable;

[0025] The controller adjusts the number of rotation turns of the feed motor according to the standard distance to drive the slider to move;

[0026] The second laser rangefinder and the reflector measure the actual distance of the slider movement and transmit the actual distance to the controller;

[0027] The controller calculates the difference between the actual distance and the standard distance, and uses the difference as the input of the negative feedback adjustment algorithm to calculate the movement distance that the slider needs to adjust again. So on and so forth until the difference between the actual distance and the standard distance is less than the preset value.

[0028] Beneficial effects: Compared with the prior art, the present invention has the following remarkable advantages:

[0029] (1) Considering the characteristics that the cable corrugated pipe is spiral and its cross-section is not a perfect circle, through the settings of the moving component and the first laser rangefinder, negative feedback closed-loop control of the moving distance of the slider can be achieved, and in cooperation with the cutting component, the cable corrugated pipe can be cut in multiple segments, enabling the cutting circular saw to cut the cable corrugated pipe with high precision without damaging the cable shielding layer, thus realizing the automatic high-precision cutting of the cable corrugated pipe;

[0030] (2) Through the synchronous movement of the high-hardness wheels, the first laser rangefinder and the cutting circular saw, the influence of the wear of the wheels and the annular track on the measurement results is avoided; when actually cutting the cable corrugated pipe, the cutting accuracy can be as high as 0.05 mm, meeting the requirements in actual operations. Brief Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of the present invention;

[0032] Figure 2 is a schematic structural diagram of the rotating component, moving component and cutting component of the present invention;

[0033] Figure 3 is a schematic structural diagram of the driving component and the machine shell of the present invention;

[0034] Figure 4 is a schematic structural diagram of the positioning component of the present invention;

[0035] Figure 5 is a control flow chart of the control method of the present invention;

[0036] Figure 6 is a schematic structural diagram of the cable corrugated pipe of the present invention. Detailed Description of the Invention

[0037] The technical solutions of the present invention will be further described below with reference to the accompanying drawings.

[0038] Example 1

[0039] As Figure 1 and Figure 4As shown in the figure, a cable corrugated pipe circumcision device according to the present invention includes a machine shell 1, a positioning assembly 2, an annular track 3, a support rod 4, a rotating assembly 5, a driving assembly 6, a moving assembly 7, a cutting assembly, a first laser rangefinder 8 and a controller. Among them, the machine shell 1, the positioning assembly 2 and the annular track 3 are coaxially arranged. The driving assembly 6 drives the rotating assembly 5 to rotate along the annular track 3. The moving assembly 7 is installed on one side of the fixed part of the rotating assembly 5. The cutting assembly and the first laser rangefinder 8 are installed on one side of the movable part of the moving assembly 7. The driving assembly 6, the moving assembly 7, the cutting assembly and the first laser rangefinder 8 are respectively electrically connected to the controller. By operating the controller, the driving assembly 6, the moving assembly 7 and the cutting assembly can be controlled. The positioning assembly 2 includes a support 26, a chuck body 28, movable jaws 29 and a jaw driving mechanism 30. The chuck body 28 is fixedly installed at the top of the support 26. A wire passing hole 27 is provided at the center of the chuck body 28. A plurality of annularly arrayed grooves are provided on the inner wall of the wire passing hole 27. The movable jaws 29 are slidably connected to the grooves. The jaw driving mechanism 30 is installed on one side of the chuck body 28, and the jaw driving mechanism 30 is used to adjust the movable jaws 29 so that the movable jaws 29 move along the inner wall of the groove. Below the guiding parts of the three movable jaws 29 on the chuck body 28, there are threads meshing with the planar thread on the back of the disc-shaped bevel gear. When the small bevel gear is rotated through the square hole with a wrench, the disc-shaped gear rotates, and the planar thread on the back simultaneously drives the three movable jaws 29 to move closer to or away from the center to clamp workpieces of different diameters. The jaw driving mechanism 30 is a conventional existing structure. During cutting, the cable passes through the wire passing hole 27. The position of the movable jaws 29 is adjusted by the jaw driving mechanism 30 so that the plurality of movable jaws 29 move synchronously towards the cable until the movable jaws 29 clamp and fix the cable. Moreover, the arrangement of the movable jaws 29 and the jaw driving mechanism 30 can clamp cables of different diameters. Both ends of the support rod 4 are provided with threads. A plurality of annularly arrayed through holes 31 are provided on the chuck body 28. One end of the support rod 4 passes through the through hole 31 and is threadedly connected to the nut on the other side of the chuck body 28. The other end of the support rod 4 passes through the machine shell 1 and is threadedly connected to the annular track 3, and the support rod 4 is fixedly connected to the machine shell 1.

[0040] As Figure 1 and Figure 2As shown, the rotating assembly 5 includes a wheel frame 15 and two wheels 16. The two wheels 16 are symmetrically installed at both ends of the wheel frame 15, and the wheels 16 are rotatably connected to the wheel frame 15. Preferably, the wheels 16 are made of a material with a Rockwell hardness ≥ 55, so that the deformation of the wheels 16 is within a certain precision range, which is beneficial to improving the stability of the wheels 16 during rotation and the precision of the distance that the wheels 16 move on the annular track 3 each time; the two wheels 16 are respectively clamped on the outer track and the inner track of the annular track 3 and are in rotational contact with it. When one of the wheels 16 rotates, through the linkage action of the wheel frame 15, the other wheel 16 can be made to rotate along the annular track 3. The moving assembly 7 includes two support blocks 9, a lead screw 10, a feed motor 11, a slider 12, a second laser rangefinder 13 and a reflector 14. The two support blocks 9 are fixedly connected to the side of the wheel frame 15 away from the wheels 16. The lead screw 10 is rotatably installed between the two support blocks 9. The feed motor 11 is fixedly installed on the wheel frame 15, and the output shaft of the feed motor 11 is fixedly connected to the lead screw 10. The slider 12 is threadedly connected to the lead screw 10, and the slider 12 is located between the two support blocks 9. The second laser rangefinder 13 is fixedly installed on one side of the upper support block 9. The reflector 14 is installed on the slider 12 and cooperates with the second laser rangefinder 13. The cutting assembly includes a rotating motor 24 and a cutting circular saw 25. The cutting circular saw 25 is installed at the bottom of the slider 12. The rotating motor 24 is fixedly installed on the slider 12, and the output shaft of the rotating motor 24 is fixedly connected to the center of the cutting circular saw 25, that is, the rotating motor 24 drives the cutting circular saw 25 to rotate and cut the cable. The first laser rangefinder 8 is fixedly installed on one side of the slider 12. Preferably, the first laser rangefinder 8 is located above the cutting circular saw 25. Among them, the feed motor 11, the second laser rangefinder 13 and the rotating motor 24 are respectively electrically connected to the controller. The first laser rangefinder 8 and the cutting circular saw 25 are both installed on the slider 12, and the two move synchronously. The first laser rangefinder 8 follows the rotating assembly 5 to rotate around the cable and measures the diameter of the cable, such as Figure 6As shown, the cable corrugated pipe is spiral, so its cross-section is not a complete perfect circle. Additionally, due to the manufacturing error in the production process of the cable corrugated pipe, its cross-section is not a perfect circle either. Therefore, what the first laser rangefinder 8 can measure by going around the cable once is the outer contour data of the cable, and the outer contour data of the cable will be transmitted to the controller. Since the first laser rangefinder 8 and the cutting circular saw 25 move synchronously, it avoids the influence of the wear of the wheel 16 and the annular track 3 on the measurement result. When actually cutting the cable, the precision requirement during cutting reaches 0.05 mm, especially when cutting the corrugated pipe. And the cable is not a complete perfect circle; in fact, it is a polygon close to a circle. Therefore, during the cutting process, the depth of each single cut needs to be adjusted according to the actual situation of the cable. Adjust the moving distance of the cutting circular saw 25 based on the outer contour data of the cable measured by the first laser rangefinder 8, and then adjust the depth of each single cut of the cutting circular saw 25 on the cable. The feed motor 11 drives the lead screw 10 to rotate, causing the slider 12 and the cutting circular saw 25 to move along the length direction of the lead screw 10. By controlling the number of turns of the feed motor 11, the moving distance of the slider 12 and the cutting circular saw 25 can be indirectly controlled. However, during the actual operation process, there will be a certain error in the transmission of the lead screw 10. After the feed motor 11 rotates a specified number of turns, the slider 12 and the cutting circular saw 25 cannot move the preset distance. By setting the second laser rangefinder 13 and the reflector 14, the actual moving distance of the slider 12 and the cutting circular saw 25 can be measured. Comparing the actual moving distance of the slider 12 with the preset distance, on the one hand, it can be known whether the slider 12 and the cutting circular saw 25 have moved to the preset position, and on the other hand, the slider 12 can be adjusted multiple times according to the error between the two until the error between the two is less than the preset standard, that is, the error between the two is less than 0.05 mm, which is beneficial to improving the accuracy of each single cut of the cutting circular saw 25 and beneficial to improving the precision of cable cutting.

[0041] As Figure 3As shown in the figure, the driving assembly 6 includes a driving motor 17, a driving gear 18, an annular pipe 19, a sun gear 20, an internal gear 21, a planetary gear 22 and a driving shaft 23. The driving motor 17 is fixedly installed on the inner wall of the casing 1. The driving gear 18 is fixedly connected to the output shaft of the driving motor 17. The annular pipe 19 is fixedly connected to the inner wall of the casing 1 and is coaxially arranged with the casing 1. When cutting the cable, the cable passes through the annular pipe 19. The sun gear 20 is rotatably installed on the outer periphery of the annular pipe 19, and the driving gear 18 is meshed with the sun gear 20. The internal gear 21 is fixedly connected to the inner wall of the casing 1 and is arranged on the outer periphery of the sun gear 20. The driving gear 18, the planetary gear 22 and the driving shaft 23 are all located in the annular space formed by the internal gear 21 and the sun gear 20. The planetary gear 22 is meshed with the sun gear 20 and rotates along the internal teeth of the internal gear 21. The thickness of the sun gear 20 is greater than the sum of the thicknesses of the driving gear 18 and the planetary gear 22, and the driving gear 18 and the planetary gear 22 are respectively meshed with the two side edge parts of the gear of the sun gear 20, that is, the driving gear 18 and the planetary gear 22 are staggered from each other and do not interfere with each other. The driving shaft 23 is fixedly connected to the central axis of the planetary gear 22, and the end of the driving shaft 23 away from the planetary gear 22 is fixedly connected to the central axis of the wheel 16 located on the inner track of the annular track 3. After the driving motor 17 is started, it drives the driving gear 18 to rotate. The driving gear 18 drives the meshed sun gear 20 to rotate. The sun gear 20 drives the meshed planetary gear 22 to rotate. Since the central axis of the planetary gear 22 is not fixed and is restricted by the internal gear 21, the planetary gear 22 rotates along the internal teeth of the internal gear 21 while maintaining its own rotation. The driving shaft 23 connects the planetary gear 22 and the wheel 16, so that the two wheels 16 rotate along the annular track 3, and further enables the wheel frame 15 to drive the moving assembly 7, the cutting assembly and the first laser rangefinder 8 to rotate around the cable.

[0042] Embodiment 2

[0043] The control method of a cable corrugated pipe cutting device according to the present invention is as Figure 5 and Figure 6 shown, and includes the following steps:

[0044] S1: Adjust the cutting assembly to the zero position of the annular track 3; adjust the drive motor 17 through the controller. The drive motor 17 drives the drive gear 18 to rotate, the drive gear 18 drives the sun gear 20 meshing with it to rotate, and the sun gear 20 drives the planet gear 22 meshing with it to rotate. Since the central axis of the planet gear 22 is not fixed and is restricted by the internal gear 21, the planet gear 22 rotates along the internal teeth of the internal gear 21 while maintaining its own rotation. The drive shaft 23 connects the planet gear 22 and the wheels 16, so that the two wheels 16 rotate along the annular track 3, and then the wheel carrier 15 drives the moving assembly 7, the cutting assembly and the first laser rangefinder 8 to rotate to the zero position of the annular track 3, that is, the highest point of the annular track 3. Before actual operation, first perform self-check and initialization on the device; after the device is powered on as a whole, the device as a whole executes the self-check program and completes the initialization. If the self-check is abnormal, an error message is issued, and the operator debugs the device until the self-check is normal. After the self-check is normal, proceed to the next step. Then set the parameters; the operator sets and changes the parameters according to actual needs. Conventional parameters include the single rotation angle of the drive motor 17, the rotation speed of the rotation motor 24, etc.

[0045] S2: Clamp and fix the cable through the positioning assembly 2, and set the cable coaxially with the cable corrugated pipe cutting device; pass the free end of the cable through the annular track 3, the annular pipe 19, the through-hole 27 of the housing 1 and the chuck body 28 in sequence, and set the cable coaxially with the annular track 3. Adjust the position of the movable chuck 29 through the chuck driving mechanism 30, so that a plurality of movable chucks 29 move towards the cable synchronously until the movable chucks 29 clamp and fix the cable.

[0046] S3: Adjust the drive motor 17 through the controller to make the two wheels 16 rotate around the annular track 3 for one circle, so that the moving assembly 7, the cutting assembly and the first laser rangefinder 8 rotate around the annular track 3 synchronously for one week, so that the first laser rangefinder 8 scans the outer peripheral contour data of the cable and transmits the outer peripheral contour data of the cable to the controller.

[0047] S4: Adjust the cutting assembly to the zero position of the annular track 3 again.

[0048] S5: The controller adjusts the rotation of the feed motor 11 according to the cable outer contour data to move the slider 12 along the cable diameter direction. At the same time, the controller realizes the negative feedback closed-loop control of the moving distance of the slider 12, so that the slider 12 drives the cutting circular saw 25 to move along the cable diameter to the maximum displacement and rotate to cut the cable. When actually cutting the cable, the accuracy requirement during cutting is relatively high, especially when cutting the corrugated pipe. And the cable is spiral and its cross-section is not a complete regular circle, but is actually a polygon close to a circle. Therefore, during the cutting process, it is necessary to adjust the depth of each single cut according to the cable outer contour data, and cut section by section along the outer circumference of the cable, that is, divide the cable outer circumference into multiple sections on average. Preferably, the cable outer circumference is at least evenly divided into 40 sections. The diameter of the arc of each section can be known according to the cable outer contour data. The number of sections divided on average depends on the actual situation of the cable to be cut. Adjust the depth of each single cut according to the diameter of each arc (when a single section is composed of multiple arcs spliced together or there are multiple values for the diameter of a single section, the depth of each single cut of this section is adjusted based on the minimum diameter to prevent over-cutting and damaging the shielding layer of the cable). The process of the negative feedback closed-loop control is as follows: The controller obtains the standard distance (the diameter of this arc) of the slider 12 movement through the cable outer contour data; the controller adjusts the number of rotation turns of the feed motor 11 according to the standard distance and then drives the slider 12 to move; the second laser rangefinder 13 and the reflector 14 measure the actual distance of the slider 12 movement and transmit the actual distance to the controller; the controller calculates the difference between the actual distance and the standard distance, and uses the difference as the input quantity of the negative feedback adjustment algorithm to calculate the movement distance that the slider 12 needs to adjust again. Repeat this process until the difference between the actual distance and the standard distance is less than the preset value. Preferably, the preset value is set to 0.05 mm; this is beneficial to improving the accuracy of each single cut of the cutting circular saw 25 and is beneficial to improving the cutting accuracy of the cable.

[0049] S6: The controller adjusts the feed motor 11 to make the cutting circular saw 25 return to the initial position. The feed motor 11 drives the lead screw 10 to rotate, so that the slider 12 drives the cutting circular saw 25 to move.

[0050] S7: The controller adjusts the drive assembly 6 according to the cable outer contour data, so that the rotating assembly 5 moves a step distance on the annular track 3, and the step distance corresponds to the length of each arc in step S7.

[0051] S8: Repeat steps S7 to S9 until the rotating assembly 5 moves around the annular track 3 for one circle and returns to the zero position of the annular track 3.

[0052] When a single segment is composed of multiple spliced arcs or there are multiple values for the diameter of a single segment, the depth of a single cut for this segment is adjusted based on the smallest diameter. After the cutting component rotates around the cable for one full cut, there will be a situation where the cable is not completely cut; however, because there are cases where other single segments are completely cut, and only a relatively thin layer of the uncut part remains for the part that is not completely cut, pulling the cable towards both ends at this time can achieve a complete disconnection of the cutting layer of the cable.

Claims

1. A cable corrugated tube ring cutting device, comprising a housing (1) and a positioning assembly (2) coaxially arranged with the housing (1) for clamping and fixing the cable, characterized in that: The invention also comprises an annular track (3) coaxially arranged with the housing (1) and the positioning assembly (2), a rotating assembly (5) rotatable along the annular track (3), a driving assembly (6) located in the housing (1) and used to drive the rotating assembly (5) to rotate, a moving assembly (7) connected to the rotating assembly (5) and used to adjust the radial feed depth, a cutting assembly located on the moving part of the moving assembly (7) and used to cut the cable, a first laser rangefinder (8) located on the moving part of the moving assembly (7) and used to measure the peripheral contour data of the cable, and a laser rangefinder (8) connected to the driving assembly (6), the moving assembly (7), the cutting assembly and the first laser rangefinder (8). The rangefinder (8) is electrically connected to a controller; the moving assembly (7) comprises two support blocks (9) fixedly connected to the rotating assembly (5), a lead screw (10) rotatably mounted between the two support blocks (9), a feed motor (11) mounted on a wheel frame (15) and having an output shaft fixedly connected to the lead screw (10), a slider (12) threadedly connected to the outer periphery of the lead screw (10), a second laser rangefinder (13) mounted on one side of the upper support block (9), and a reflector (14) mounted on the slider (12) and cooperating with the second laser rangefinder (13) to measure the actual moving distance of the slider (12).

2. The cable corrugated tube ring cutting device according to claim 1, characterized in that: The rotating assembly (5) comprises a wheel frame (15) and two wheels (16) symmetrically arranged and rotatably connected to the wheel frame (15), wherein the two wheels (16) are respectively clamped on an outer track and an inner track of the circular track (3) and are in rotational contact therewith, wherein the driving assembly (6) drives one wheel to rotate along the inner track of the circular track (3), and at the same time drives the other wheel to rotate along the outer track of the circular track (3) through the wheel frame (15).

3. The cable corrugated tube ring cutting device according to claim 2, characterized in that: The wheel (16) has a Rockwell hardness of ≥55.

4. The cable corrugated tube ring cutting device according to claim 2, characterized in that: The driving assembly (6) comprises a driving motor (17) mounted inside the housing (1), a driving gear (18) fixedly connected to the output shaft of the driving motor (17), an annular tube (19) fixedly connected to the inner wall of the housing (1) and arranged coaxially with the annular track (3), a sun gear (20) rotatably mounted on the outer periphery of the annular tube (19) and meshingly connected to the driving gear (18), an inner gear (21) fixedly connected to the inner wall of the housing (1) and arranged on the outer periphery of the sun gear (20), a planetary gear (22) meshingly connected to the sun gear (20) and rotating along the inner teeth of the inner gear (21), and a driving shaft (23) fixedly connected to the central axis of the planetary gear (22), wherein one end of the driving shaft (23) away from the planetary gear (22) is fixedly connected to the central axis of a wheel (16) located on the inner track of the annular track (3).

5. The cable corrugated tube ring cutting device according to claim 1, characterized in that: The cutting assembly comprises a cutting circular saw (25) fixedly mounted on the bottom of a slide block (12) and a rotating motor (24) located on the slide block (12) and having an output shaft connected to the cutting circular saw (25).

6. The cable corrugated tube ring cutting device according to claim 1, characterized in that: The positioning assembly (2) comprises a support (26), a chuck body (28) fixedly connected to the support (26) and having a wire hole (27) at the center for the cable to pass through, a movable claw (29) slidably connected to a plurality of annular array grooves formed on the inner wall of the wire hole (27), and a claw driving mechanism (30) disposed on one side of the chuck body (28) for adjusting the movable claw (29) to clamp the cable.

7. The cable corrugated tube ring cutting device according to claim 6, characterized in that: It also includes a support rod (4), both ends and a middle portion of the support rod (4) are provided with threads, the chuck body (28) is provided with a plurality of through holes (31) distributed in an annular array, one end of the support rod (4) passes through the through hole (31) and is threadedly connected to a nut on the other side of the chuck body (28), the middle portion of the support rod (4) is threadedly connected to the housing (1), and the other end of the support rod (4) passes through the housing (1) and is threadedly connected to the annular track (3).

8. A control method for a cable corrugated tube ring cutting device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Adjust the cutting assembly to the zero position of the circular track (3); S2: The cable is clamped and fixed by the positioning component (2), and the cable and the cable corrugated tube ring cutting device are arranged coaxially; S3: driving the moving assembly (7) and the cutting assembly to rotate around the circular track (3) for one revolution, so that the first laser rangefinder (8) scans the cable outer periphery profile data and transmits the cable outer periphery profile data to the controller; S4: Adjust the cutting assembly to the zero position of the circular track (3) again; S5: The controller adjusts the rotation of the feed motor (11) according to the cable outer periphery profile data so that the slider (12) moves along the cable diameter direction. At the same time, the controller implements negative feedback closed-loop control of the moving distance of the slider (12), so that the slider (12) moves along the cable diameter direction with the cutting circular saw (25) to the maximum displacement position and rotates to cut the cable; The specific steps of the negative feedback closed-loop control are as follows: the controller obtains the standard moving distance of the slider (12) through the cable peripheral profile data; The controller adjusts the number of revolutions of the feed motor (11) according to the standard distance, thereby driving the slider (12) to move; The second laser rangefinder (13) and the reflective sheet (14) measure the actual distance moved by the slider (12), and transmit the actual distance to the controller; The controller calculates the difference between the actual distance and the standard distance, and uses the difference as an input of a negative feedback adjustment algorithm to calculate the moving distance that the slider (12) needs to be adjusted again, and repeats this process until the difference between the actual distance and the standard distance is less than a preset value; S6: adjusting the feed motor (11) through the controller to return the cutting circular saw (25) to the initial position; S7: the controller adjusts the driving component (6) according to the cable outer peripheral profile data, so that the rotating component (5) moves a step distance on the circular track (3); S8: Repeat steps S5 to S7 until the rotating assembly (5) moves one circle around the circular track (3) and returns to the zero point position of the circular track (3).

Images