Efficient valve welding seam automatic cutting method and valve welding seam automatic cutting device

Abstract

An efficient automatic valve welding seam cutting method and an automatic valve welding seam cutting device.The efficient automatic valve welding seam cutting method comprises the following steps that S1, a locking and limiting mechanism clamps a pipeline, S2, a centering and clamping mechanism clamps and centers a valve, and S3, an annular cutting mechanism automatically cuts a valve welding seam. Manual operation is replaced, automatic adjustment of the cutter feeding amount and the rotary cutting speed is achieved, the welding seam cutting quality is ensured, an automatic centering mechanism, an automatic limiting mechanism, an automatic fixing mechanism and the like are arranged, meanwhile, adjustability is needed, the use requirements of valves of various sizes are met, a digital control system can be used, the cutting process is visualized and controllable, and the production efficiency is improved. The automation control degree of the equipment is improved, the whole cutting mechanism is integrated, use is flexible, simple and convenient, and tedious work such as manual clamping, calibration and cutting of operators can be omitted.

Description

[Technical field] The invention relates to the technical field of valve repair, and in particular to an efficient valve weld automatic cutting method and a valve weld automatic cutting device. [Background technology] The valve is an important component in the fluid delivery system of a nuclear power plant. Sealing is its most basic function. The key to ensuring the safety of the pipeline system of a nuclear power plant is to prevent leakage inside and outside the valve. In order to fully ensure the sealing function of the valve, according to the relevant technical requirements, for valves with high radioactive fluid parameters, in order to avoid damage to the fluid due to valve damage, the part where the valve is connected to the pipeline needs to be sealed with electric welding. In the valves of nuclear power plants, a ring-shaped sealing weld is usually welded between the valve cover and the valve body to block the radioactive fluid from passing through the gap between the valve body and the valve cover to prevent the fluid from being exposed. However, in the long-term harsh and complex service environment, chemical corrosion of the valve core and stress cracking of the weld occur from time to time, posing a great threat to the safe, efficient and low-cost operation of the on-site equipment. Therefore, regular and necessary inspection and maintenance are carried out on nuclear power valve facilities. In the prior art, the cutting tool needs to manually adjust the feed rate and an external power source is required for cutting. Therefore, the cutting device needs to be stopped during the cutting process to adjust the tool feed rate, resulting in a reduction in cutting efficiency. [Summary of the invention] In order to overcome the problems of low cutting efficiency and manual adjustment of the tool feed rate of the above-mentioned valve cutting device, the technical problem to be solved by the present invention is to provide an efficient valve weld automatic cutting method and valve weld automatic cutting device, and the present invention is realized by the following technical solutions: An efficient valve weld automatic cutting method comprises the following steps: S1: Lock the limit mechanism to clamp the pipe: S2: The centering clamping mechanism clamps and centers the valve; S3: The annular cutting mechanism automatically cuts the valve weld.

[0004] As described above, an efficient automatic valve weld cutting method is provided. The clamping claws are initially installed on the pipeline and the distance between the two clamping claws is adjusted. After the adjustment is completed, the hydraulic cylinder on the clamping claws presses the clamping claws to clamp the pipeline. The driving motor in the fastening mechanism drives the fastening bolts to move toward the valve to limit the up and down shaking of the valve when the weld is cut.

[0005] In the above-mentioned efficient automatic valve weld cutting method, the radial feeding mechanism drives the annular synchronous connecting rod and the clamping and centering module to feed simultaneously to realize the centering of the valve weld, and after the centering is completed, the clamping and centering module clamps the valve weld.

[0006] As described above, an efficient automatic valve weld cutting method includes: cutting, a first drive motor drives the first planetary gear to rotate in a fixed inner gear ring, a cutting mechanism rotates following the main shaft gear, a turning tool in the cutting mechanism continuously cuts the valve weld under the automatic feeding of a high-precision feeding mechanism, the first air cooling mechanism blows out cold air and the first chip removal mechanism discharges debris, and grinding, a second drive motor drives the second planetary gear to rotate in a fixed inner gear ring, a grinding mechanism rotates following the second planetary gear, after cutting by the cutting mechanism, a grinder in the grinding mechanism grinds the cut valve weld, the second air cooling mechanism blows out cold air to cool the tool and the second chip removal mechanism cleans the discharged debris.

[0007] A highly efficient automatic valve weld cutting device comprises a locking and limiting mechanism which is arranged on both sides of the valve to lock the overall cutting device on the detection valve, the locking and limiting mechanism is connected to a clamping and positioning mechanism which is used to position and automatically clamp the valve, and a ring-shaped cutting mechanism which automatically cuts around the valve weld is arranged on one side of the centering clamping mechanism.

[0008] In the highly efficient automatic valve weld cutting device as described above, the annular cutting mechanism includes a tool feeding mechanism for automatic tool feeding and cutting and automatic grinding after feeding and cutting, and a planetary gear transmission mechanism for causing the tool feeding mechanism to rotate around the valve.

[0009] As described above, a highly efficient automatic valve weld cutting device, the planetary gear transmission mechanism includes a fixed inner gear ring which is fixed to itself and used for the tool feeding mechanism to make circular motion, the fixed inner gear ring is meshed with a first planetary gear for driving the tool feeding mechanism to rotate and cut, and is meshed with a second planetary gear for driving the tool feeding mechanism to rotate and grind, the tool feeding mechanism includes a cutting mechanism connected to the first planetary gear for automatically feeding and cutting the valve weld, and a grinding mechanism connected to the second planetary gear in the tool feeding mechanism for automatically grinding the valve weld.

[0010] As described above, a high-efficiency automatic cutting device for valve welds, the cutting mechanism includes a first tool base for loading the cutting parts of the cutting mechanism, the first tool base is provided with a plurality of first pulleys supporting the cutting mechanism and facilitating the sliding of the cutting mechanism along the fixed inner gear ring, the first planetary gear is connected with a first drive motor for driving the first planetary gear to rotate, the cutting mechanism also includes a turning tool for cutting the valve weld, the turning tool is connected with a high-precision feeding mechanism for controlling the cutting amount, a first air cooling mechanism for cooling the tool when the tool is cutting is provided on one side of the high-precision feeding mechanism, a first chip removal mechanism for absorbing cutting debris while cooling the tool is provided on one side of the first air cooling mechanism, the high-precision feeding mechanism includes a first servo motor for performing rotational motion and a first ball screw for converting rotational motion into linear motion to drive the tool to feed.

[0011] As described above, a highly efficient automatic valve weld cutting device, the grinding mechanism includes a second tool base for loading the grinding mechanism grinding parts, the second tool base is provided with a plurality of second pulleys that support the grinding mechanism and facilitate the grinding mechanism to slide along the fixed inner gear ring, the second planetary gear is connected to a second drive motor for driving the second planetary gear to rotate, the grinding mechanism also includes a grinder for grinding the valve weld after cutting, the grinder is connected to a grinding feed mechanism for controlling the grinding depth, a second air cooling mechanism is provided on one side of the grinding feed mechanism for cooling the tool when grinding, a second chip removal mechanism is provided on one side of the second air cooling mechanism for absorbing cutting debris while cooling the tool, and the grinding feed mechanism includes a second servo motor for performing rotational motion and a second ball screw for converting rotational motion into linear motion to drive the tool feed.

[0012] According to the above-mentioned efficient automatic valve weld cutting device, the centering clamping mechanism includes a clamping and centering module for clamping the valve weld, the clamping and centering module is connected to a radial feed mechanism for controlling the movement of the clamping and centering module, the clamping and centering module includes a clamping slider for contacting the valve weld during clamping, a connecting rod is provided between the clamping slider and the radial feed mechanism, the connecting rod is connected to an annular synchronous connecting rod, a plurality of annular synchronous connecting rods are connected together by a connecting rod arc so that a plurality of clamping sliders simultaneously push and clamp the valve weld, and the radial feed mechanism is provided with a connecting rod between the clamping slider and the radial feed mechanism. The mechanism includes a third servo motor for performing rotational motion and a third ball screw that converts rotational motion into linear motion and pushes the clamping and centering module to clamp the valve weld. The locking and limiting mechanism includes a clamping claw for clamping and locking the pipe. The clamping claw is connected to a locking power device for pushing the clamping claw to lock the pipe. A support bracket is provided between the clamping claws. A fastening mechanism for limiting the up and down shaking of the entire device is provided on the bracket. The fastening mechanism includes a fourth drive motor and a fastening bolt. A support column is connected between the bracket and the centering clamping mechanism.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The automatic valve weld cutting method used in this scheme can replace manual operation, automatically adjust the tool feed rate and the rotary cutting speed, ensure the quality of weld cutting, and have automatic centering, limiting, fixing and other mechanisms. At the same time, it needs to be adjustable to meet the use requirements of valves of various sizes. A digital control system can be used to make the cutting process visual and controllable, improve the degree of automation control of the equipment, and integrate the overall cutting mechanism. It is flexible and easy to use, which can save the operators from the tedious work of manual clamping, calibration and cutting.

[0014] 2. The device is equipped with automatic centering clamping and locking limit mechanisms, and must be adjustable to meet the use requirements of valves of different sizes. The annular cutting mechanism can accurately control the cutting amount and cutting time. The setting of the centering clamping mechanism eliminates the operator's manual clamping and calibration operation time, greatly improving the cutting efficiency.

[0015] 3. The locking limit mechanism clamps and fixes the entire cutting equipment to ensure that the cutting device can be accurately positioned on the valve, avoiding inaccurate cutting due to position deviation, reducing the vibration of the cutting equipment, and improving the cutting quality.

[0016] 4. It has mechanisms for automatic chip cleaning, weld cutting, tool cooling, etc., which facilitates use and maintenance, reduces manual operation time, and increases equipment service life.

Brief Description of the Drawings

[0018] Figure 1 A schematic diagram of a highly efficient valve weld automatic cutting method of the present invention Figure 1 Figure 2 A three-dimensional schematic diagram of an efficient valve weld automatic cutting device of the present invention Figure 2 ; Figure 3 A schematic diagram of a locking and limiting mechanism of an efficient valve weld automatic cutting device of the present invention Figure 3 ; Figure 4 A schematic diagram of an efficient automatic valve weld cutting device of the present invention Figure 4 ; Figure 5 A schematic diagram of a centering clamping mechanism of an efficient valve weld automatic cutting device of the present invention Figure 5 ; Figure 6 Schematic diagram of the annular cutting mechanism of an efficient valve weld automatic cutting device of the present invention Figure 6 ; Figure 7 Schematic diagram of the annular cutting mechanism of an efficient valve weld automatic cutting device of the present invention Figure 7 ; Figure 8 Schematic diagram of the grinding mechanism of an efficient valve weld automatic cutting device of the present invention Figure 8 ; Fig. 9 A schematic diagram of the cutting mechanism of an efficient valve weld automatic cutting device of the present invention Figure 9 . [Specific implementation method] In order to make the technical problems, technical solutions and beneficial effects solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] See also Figures 1 to 9 , including a locking and limiting mechanism 1 for being arranged on both sides of the valve to lock the overall cutting device on the detection valve, the locking and limiting mechanism 1 is connected to a centering clamping mechanism 2 that automatically clamps the valve weld and positions the clamping center of the overall cutting device and the circular center of the weld on the same axis, and a ring cutting mechanism 3 for automatically cutting around the valve weld is provided on one side of the centering clamping mechanism 2. The locking and limiting mechanism ensures that the cutting device can be accurately positioned on the valve to avoid inaccurate cutting due to position deviation. The centering clamping mechanism ensures the accuracy of the cutting path by aligning the center of the cutting device with the circular center of the weld. The locking and centering clamping mechanisms work together to prevent the device from shaking during the cutting process, thereby reducing operating errors and potential safety risks. The ring cutting mechanism can automatically perform rotational cutting around the valve weld, reducing the need for manual intervention and improving production efficiency.

[0021] Furthermore, as a preferred implementation mode of the present invention but not a limitation, the annular cutting mechanism 3 includes a tool feeding mechanism 31 for automatic tool feeding and cutting and automatic grinding after feeding and cutting, and a planetary gear transmission mechanism 32 for driving the tool feeding mechanism 31 to rotate around the valve. The tool feeding mechanism 31 can accurately control the feeding speed and depth of the tool to ensure stability and consistency during the cutting or grinding process. The planetary gear transmission mechanism provides high torque output and precise rotational motion, which is suitable for uniform cutting and grinding around the valve weld. Compared with other transmission methods, the planetary gear transmission mechanism is more compact and space-saving, and is easy to install and use in a limited space. The annular cutting mechanism achieves efficient, precise and stable cutting and grinding effects through the synergistic effect of the tool feeding mechanism and the planetary gear transmission mechanism, which is suitable for the automated cutting requirements of valve weld cutting.

[0022] Further, as a preferred embodiment of the present invention but not limiting, the planetary gear transmission mechanism 32 includes a fixed inner gear ring 321 which is fixed by itself and used for the tool feeding mechanism 31 to make a circular motion, the fixed inner gear ring 321 is meshed with a first planetary gear 322 for driving the tool feeding mechanism 31 to rotate and cut, and is meshed with a second planetary gear 326 for driving the tool feeding mechanism 31 to rotate and grind, the tool feeding mechanism 31 includes a cutting mechanism 311 connected to the first planetary gear 322 for automatically feeding and cutting the valve weld, and the second planetary gear 326 is connected to the tool feeding mechanism 31. The grinding mechanism 312 for automatically grinding the valve weld, the cutting mechanism 311 and the grinding mechanism 312 are distributed on the same side of the fixed inner ring 321 in a mirror-image manner, the planetary gear transmission provides high-precision position and speed control, the planetary gear structure allows a larger torque to be transmitted in a smaller space, which is especially important for driving cutting and grinding tools, by having multiple planetary gears meshing at the same time, load balance can be achieved, vibration and noise can be reduced, and the smoothness of the machining process can be ensured, the symmetrical layout of the cutting mechanism and the grinding mechanism helps to balance the load of the entire system, reduce mechanical stress, and extend the service life of the equipment.

[0023] Furthermore, as a preferred embodiment of the present invention but not a limitation, the cutting mechanism 311 includes a first tool base 324 for loading the cutting parts of the cutting mechanism 311, the first tool base 324 is provided with a plurality of first pulleys 325 supporting the cutting mechanism 311 and facilitating the sliding of the cutting mechanism 311 along the fixed inner gear ring 321, the first planetary gear 322 is connected with a first drive motor 323 for driving the first planetary gear 322 to rotate, the cutting mechanism 311 also includes a turning tool 3111 for cutting valve welds, the turning tool 3111 is connected with a high-precision feeding mechanism 3112 for controlling the cutting amount, one side of the high-precision feeding mechanism 3112 is provided with a first air cooling mechanism 3115 for cooling the tool when the tool is cutting, and one side of the first air cooling mechanism 3115 is provided with a first air cooling mechanism 3115 for cooling the tool when the tool is cutting. The first chip removal mechanism 3116 cools down and absorbs the cutting debris at the same time. The high-precision feeding mechanism 3112 includes a first servo motor 3113 for performing rotational motion and a first ball screw 3114 for converting the rotational motion into a linear motion to push the tool to feed. The high-precision feeding mechanism ensures the precise feeding amount of the turning tool when cutting the valve weld, which is conducive to maintaining the cutting accuracy and consistency. The first air cooling mechanism can effectively reduce the temperature of the turning tool during the cutting process, reduce thermal fatigue wear, extend the tool life, and improve cutting efficiency and quality. The first chip removal mechanism promptly removes the debris generated during the cutting process to prevent the accumulation of debris from affecting the cutting process, while keeping the working area clean. The first tool base and the first pulley ensure the stable sliding of the cutting mechanism on the fixed inner gear ring, reduce vibration and wear, and enhance the reliability of the device. The tool feeding mechanism can adjust the feeding speed and depth according to different cutting requirements, and is suitable for valve welds of various materials and thicknesses.

[0024] Further, as a preferred embodiment of the present invention but not limiting, the grinding mechanism 312 includes a second tool base 327 for loading the grinding components of the grinding mechanism 312, the second tool base 327 is provided with a plurality of second pulleys 328 supporting the grinding mechanism 312 and facilitating the sliding of the grinding mechanism 312 along the fixed inner gear ring 321, the second planetary gear 326 is connected to a second drive motor 329 for driving the second planetary gear 326 to rotate, The grinding mechanism 312 also includes a grinding knife 3121 for grinding the valve weld after cutting, and the grinding knife 3121 is connected to a grinding feed mechanism 3122 for controlling the grinding depth. A second air cooling mechanism 3125 is provided on one side of the grinding feed mechanism 3122 for cooling the tool during grinding, and a second chip removal mechanism 3126 is provided on one side of the second air cooling mechanism 3125 for absorbing cutting debris while cooling the tool. The grinding feed mechanism 3122 includes a second servo motor 3123 for performing rotational motion and a second ball screw 3124 for converting the rotational motion into a linear motion to drive the tool feed. 124. The grinding feed mechanism can accurately control the feed depth of the grinder through the cooperation of the second servo motor and the second ball screw to ensure the accuracy and consistency during the grinding process. The second air cooling mechanism can effectively reduce the temperature of the grinder during the grinding process, reduce material deformation and tool wear caused by high temperature, and extend the service life of the grinder. The second chip removal mechanism can promptly remove the debris generated during the grinding process to prevent the debris from clogging and interfering with the grinding process, while keeping the working area clean. The second tool base and the second pulley ensure the stable sliding of the grinding mechanism on the fixed inner gear ring 321, reduce vibration, and increase the reliability and durability of the device.

[0025] Further, as a preferred embodiment of the present invention but not a limitation, the centering clamping mechanism 2 includes a clamping centering module 21 for clamping the valve weld, the clamping centering module 21 is connected to a radial feed mechanism 22 for controlling the movement of the clamping centering module 21, the clamping centering module 21 includes a clamping slider 211 for contacting the valve weld during clamping, a connecting rod 212 is provided between the clamping slider 211 and the radial feed mechanism 22, the connecting rod 212 is connected to an annular synchronous connecting rod 213, and a plurality of annular synchronous connecting rods 213 are connected together by a connecting rod arc 214 so that a plurality of clamping sliders 211 simultaneously push the clamping Tighten the valve weld, the radial feed mechanism 22 includes a third servo motor 221 for rotational motion and a third ball screw 222 for converting rotational motion into linear motion to push the clamping and centering module 21 to clamp the valve weld. The three circular clamping sliders move simultaneously under the action of the annular synchronous connecting rod, which can accurately position the valve weld in the center of the cutting device to ensure the centering accuracy during the cutting process. The combination of the third servo motor and the third ball screw provides high-precision radial feed control to ensure that the clamping and centering module can move according to the set route. The clamping and centering module can be adjusted according to the corresponding size of the valve to improve the applicability of the equipment.

[0026] Furthermore, as a preferred embodiment of the present invention but not a limitation, the locking and limiting mechanism 1 includes a clamping claw 11 for clamping and locking the pipe, the clamping claw 11 is connected to a locking power device 12 for pushing the clamping claw 11 so that the clamping claw 11 locks the pipe, the locking power device is a hydraulic cylinder, and a support bracket 13 is provided between the two clamping claws 11 clamping the pipe, the support bracket 13 is provided with a fastening mechanism 14 for limiting the up and down shaking of the entire device, and a support column 15 is connected between the support bracket 13 and the centering clamping mechanism 2 so that the entire mechanism can be cut when cutting. Maintain stability, the fastening mechanism 14 includes a fourth drive motor 141 and a fastening bolt 142. The hydraulic cylinder serves as a locking power device and can provide a very large clamping force to ensure that the pipeline is stably fixed during the cutting process and prevent any movement or shaking. The combination of the bracket and the support column enhances the rigidity of the overall structure, reduces vibration during the cutting process, and ensures the accuracy and stability of the cutting. The design of the clamping claw and the bracket can be adjusted according to pipes of different diameters to increase the scope of application of the device. By reducing shaking and movement during the cutting process, the flatness and quality of the cutting edge can be significantly improved.

[0027] An efficient automatic cutting method for valve welds includes the following three steps: S1 is a locking limit mechanism 1 that clamps the pipe so that the cutting device remains stable during cutting. After S1 is completed by locking the limit mechanism 1 to clamp the pipe, S2 is a centering clamping mechanism 2 that clamps the valve and makes the circular center formed by the valve weld and the clamping center of the centering clamping mechanism 2 on the same axis to ensure that the action trajectory of the tool when cutting along the circumference of the weld is aligned with the axial direction of the circular weld. After S2 is completed by the centering clamping mechanism 2 that clamps and centers the valve, S3 is an annular cutting mechanism 3 that automatically cuts the valve weld. During the cutting process, the tool needs to make a circular motion around the center of the weld to cut, and the valve weld is polished while cutting to ensure the cutting quality.

[0028] The step S1 includes the following specific steps: S11 preliminarily installs the clamping claw 11 on the pipe, adjusts the distance between the two clamping claws 11, and after the adjustment is completed, the hydraulic cylinder 12 on the clamping claw 11 presses the clamping claw 11 to clamp the pipe. The firm clamping can prevent the device from moving or falling off during the processing, ensuring that the device is in a suitable working state. S12 The drive motor 141 in the fastening mechanism drives the fastening bolt 142 to move toward the valve, and stops moving downward after pressing the appropriate pressure, so that the fastening mechanism 14 limits the up and down shaking of the entire device during the cutting process to ensure the accuracy during cutting.

[0029] The step S2 includes the following specific steps: S21 the radial feed mechanism 22 drives the annular synchronous connecting rod 23 and the circular clamping slider to feed simultaneously to realize the centering of the valve weld, S22 after the centering is completed, the three circular clamping sliders in the clamping and centering module jointly clamp the valve weld, and the annular synchronous connecting rod ensures the synchronous movement of all circular clamping sliders to avoid deviation or uneven stress caused by unilateral clamping, thereby improving the consistency and reliability of the centering effect.

[0030] The step S3 includes the following specific steps: S31: cutting, the first drive motor 323 drives the first planetary gear 322 to rotate in the fixed inner ring 321, the cutting mechanism 311 follows the first planetary gear 322 to rotate, and the turning tool 3111 in the cutting mechanism 311 automatically cuts the valve weld under the feeding of the high-precision feeding mechanism 3112. During the cutting process, the first air cooling mechanism 3115 blows out cold air to cool the tool and the first chip removal mechanism 3116 cleans the discharged debris. The high-precision feeding mechanism 3112 can accurately control the feed amount of the turning tool 3111 to ensure that the cutting amount during the cutting process meets the set value, improve the cutting accuracy and surface finish, and the cutting mechanism can adjust the cutting parameters according to a variety of valve weld types and materials, and has a wide range of applicability. S32: Grinding. The second drive motor 329 drives the second planetary gear 326 to rotate in the fixed inner gear ring 321. The grinding mechanism 312 rotates following the second planetary gear 326. After the cutting mechanism 311 cuts, the grinder 3121 in the grinding mechanism 312 grinds the cut valve weld. The second air cooling mechanism 3125 blows out cold air to cool the tool and the second chip removal mechanism 3126 cleans the discharged debris. Driven by the second planetary gear 326, the grinder 3121 can accurately grind the cut weld to remove burrs and unevenness, thereby improving the valve cutting quality.

[0031] The working principle of this embodiment is as follows: The invention discloses an efficient automatic valve weld cutting method and an automatic valve weld cutting device, wherein the clamping claw in the locking limit mechanism is locked on the pipeline. After the locking is completed, the radial feed mechanism in the centering clamping mechanism is controlled to move the clamping centering module, and under the action of the annular synchronous connecting rod, three circular clamping slide blocks are synchronously moved to clamp the valve. The driving motor in the annular cutting mechanism drives the tool feed mechanism to rotate, and the cutting mechanism in the tool feed mechanism rotates to cut the valve weld. The grinding mechanism grinds the cut valve weld until the valve weld is cut. The tool feed mechanism stops moving and the automatic cutting of the valve weld is completed. The stability of the cutting process and the accuracy of the weld cutting are ensured by the precise control of the centering clamping and locking mechanism. The whole process is controlled by an automatic system to reduce the need for manual operation.

[0032] The above are implementation methods provided in combination with specific contents, and it is not intended that the specific implementation of this application is limited to these descriptions. Any method structure similar to the present application, or some technical deductions or replacements made based on the concept of the present application, shall be deemed to be within the protection scope of this application.

Claims

1. An efficient valve weld automatic cutting method, characterized in that: The following steps are involved: S1: locking limit mechanism (1) clamps the pipe; S2: The centering clamping mechanism (2) clamps and centers the valve; S3: The annular cutting mechanism (3) automatically cuts the valve weld.

2. According to claim 1, a highly efficient automatic valve weld cutting method is characterized in that: The step S1 comprises the following specific steps: S11: Preliminarily installing the clamping claws (11) on the pipe and adjusting the distance between the two clamping claws (11). After the adjustment is completed, the hydraulic cylinder (12) on the clamping claws (11) presses the clamping claws (11) to clamp the pipe; S12: The driving motor (141) in the fastening mechanism (14) drives the fastening bolt (142) to move toward the valve to limit the valve from shaking up and down when the weld is cut.

3. The efficient automatic valve weld cutting method according to claim 2 is characterized in that: The step S2 comprises the following specific steps: S21: The radial feeding mechanism (22) drives the annular synchronous connecting rod (23) and the clamping and centering module (21) to feed simultaneously to realize centering of the valve weld; S22, after the alignment is completed, the centering module (21) is clamped to clamp the valve weld.

4. The efficient automatic valve weld cutting method according to claim 3 is characterized in that: The step S3 comprises the following specific steps: S31: cutting, the first driving motor (323) drives the first planetary gear (322) to rotate in the fixed inner gear ring (321), the cutting mechanism (311) rotates following the first planetary gear (322), the turning tool (3111) in the cutting mechanism (311) automatically cuts the valve weld under the feeding of the high-precision feeding mechanism (3112), and during the cutting process, the first air cooling mechanism (3115) blows out cold air to cool the tool, and the first chip removal mechanism (3116) cleans the discharged chips; S32: grinding, the second drive motor (329) drives the second planetary gear (326) to rotate in the fixed inner gear ring (321), the grinding mechanism (312) rotates following the second planetary gear (326), after the cutting mechanism (311) cuts, the grinding knife (3121) in the grinding mechanism (312) grinds the cut valve weld, the second air cooling mechanism (3125) blows out cold air to cool the tool, and the second chip removal mechanism (3126) cleans the discharged chips.

5. An efficient valve weld automatic cutting device, characterized in that: A highly efficient automatic valve weld cutting method as claimed in any one of claims 1 to 4, comprising a locking and limiting mechanism (1) arranged on both sides of the valve to lock the overall cutting device on the detection valve, the locking and limiting mechanism (1) being connected to a centering clamping mechanism (2) for clamping the valve weld so that the clamping center of the overall cutting device and the circular center of the weld are on the same axis, and a ring cutting mechanism (3) for performing rotational cutting around the valve weld is provided on one side of the centering clamping mechanism (2).

6. The efficient automatic valve weld cutting device according to claim 5 is characterized in that The annular cutting mechanism (3) comprises a tool feeding mechanism (31) for automatically feeding the tool for cutting and automatically grinding the tool after feeding and cutting, and a planetary gear transmission mechanism (32) for causing the tool feeding mechanism (31) to rotate around the valve.

7. The efficient automatic valve weld cutting device according to claim 6 is characterized in that The planetary gear transmission mechanism (32) comprises a fixed inner gear ring (321) which is fixed to itself and used for the tool feeding mechanism (31) to perform circular motion. The fixed inner gear ring (321) is meshed with a first planetary gear (322) for driving the tool feeding mechanism (31) to rotate and cut, and is meshed with a second planetary gear (326) for driving the tool feeding mechanism (31) to rotate and grind. The tool feeding mechanism (31) comprises a cutting mechanism (311) connected to the first planetary gear (322) for automatically feeding and cutting the valve weld, and a grinding mechanism (312) connected to the second planetary gear (326) in the tool feeding mechanism (31) for automatically grinding the valve weld.

8. The efficient automatic valve weld cutting device according to claim 7 is characterized in that The cutting mechanism (311) comprises a first tool base (324) for loading a cutting component of the cutting mechanism (311), the first tool base (324) is provided with a plurality of first pulleys (325) for supporting the cutting mechanism (311) and facilitating the cutting mechanism (311) to slide along a fixed inner gear ring (321), the first planetary gear (322) is connected to a first drive motor (323) for driving the first planetary gear (322) to rotate, the cutting mechanism (311) further comprises a turning tool (3111) for cutting a valve weld, the turning tool (31 11) is connected to a high-precision feeding mechanism (3112) for controlling the cutting amount, one side of the high-precision feeding mechanism (3112) is provided with a first air cooling mechanism (3115) for cooling the tool when the tool is cutting, one side of the first air cooling mechanism (3115) is provided with a first chip removal mechanism (3116) for absorbing cutting debris while cooling the tool, and the high-precision feeding mechanism (3112) includes a first servo motor (3113) for performing rotational motion and a first ball screw (3114) for converting rotational motion into linear motion to drive the tool to feed.

9. The efficient automatic valve weld cutting device according to claim 8, characterized in that : The grinding mechanism (312) comprises a second tool base (327) for loading the grinding parts of the grinding mechanism (312), the second tool base (327) is provided with a plurality of second pulleys (328) for supporting the grinding mechanism (312) and facilitating the grinding mechanism (312) to slide along the fixed inner gear ring (321), the second planetary gear (326) is connected to a second driving motor (329) for driving the second planetary gear (326) to rotate, The grinding mechanism (312) further comprises a grinding knife (3121) for grinding the valve weld after cutting, the grinding knife (3121) is connected to a grinding feed mechanism (3122) for controlling the grinding depth, a second air cooling mechanism (3125) for cooling the tool when the tool is being ground is provided on one side of the grinding feed mechanism (3122), a second chip removal mechanism (3126) for absorbing cutting debris while cooling the tool is provided on one side of the second air cooling mechanism (3125), and the grinding feed mechanism (3122) comprises a second servo motor (3123) for performing rotational motion and a second ball screw (3124) for converting the rotational motion into linear motion to drive the tool to feed.

10. The efficient automatic valve weld cutting device according to claim 9, characterized in that The centering clamping mechanism (2) comprises a clamping centering module (21) for clamping the valve weld, the clamping centering module (21) is connected to a radial feed mechanism (22) for controlling the movement of the clamping centering module (21), the clamping centering module (21) comprises a clamping slider (211) for contacting the valve weld during clamping, a connecting rod (212) is provided between the clamping slider (211) and the radial feed mechanism (22), the connecting rod (212) is connected to an annular synchronous connecting rod (213), a plurality of annular synchronous connecting rods (213) are connected together by a connecting rod arc (214) so ​​that the plurality of clamping sliders (211) are pushed to clamp the valve weld at the same time, and the radial feed mechanism (22) comprises a connecting rod for performing a rotational motion. The third servo motor (221) and the third ball screw (222) converting the rotational motion into the linear motion to push the clamping and centering module (21) to clamp the valve weld, the locking and limiting mechanism (1) comprises a clamping claw (11) for clamping and locking the pipe, the clamping claw (11) is connected to a locking power device (12) for pushing the clamping claw (11) to lock the pipe, a bracket (13) for supporting is provided between the clamping claws (11), a fastening mechanism (14) for limiting the up and down shaking of the entire device is provided on the bracket (13), the fastening mechanism (14) comprises a fourth drive motor (141) and a fastening bolt (142), and a support column (15) is connected between the bracket (13) and the centering clamping mechanism (2).

Images