A device for processing complex curved surface welding groove

Abstract

The present invention provides a complex curved surface welding groove processing device, a magnetorheological suction cup, a retaining ring, a rigid support rod assembly, a clamping force adjustment shaft, a processing template and a plurality of processing units, wherein the retaining ring is arranged on the outer wall of the processing template, the clamping force adjustment shaft is arranged just above the center of the processing template, and a plurality of processing units are arranged between the lower part of the clamping force adjustment shaft and the inner wall of the processing template; the upper end of the retaining ring is connected to the upper part of the clamping force adjustment shaft through a rigid support rod assembly, the lower end of the retaining ring is connected to the upper end of the magnetorheological suction cup, and the lower surface of the processing template is in contact with the upper surface of the magnetorheological suction cup. In the present invention, the magnetorheological suction cup can effectively fix the entire device on the surface to be processed when the electromagnet is energized. The retaining ring and the processing template define the circumferential position of the processing unit, and the combination of the rigid support rod assembly and the flexible support rod provides reliable pushing force and pressure for the processing unit.

Description

Technical Field

[0001] The invention relates to the field of oil and gas field ground equipment manufacturing and processing, in particular to a complex curved surface welding groove processing device. Background Art

[0002] In the ground equipment of oil and gas fields, in order to realize the interconnection between containers and the internal cleaning of the container itself, the installation of components, and other specific functions, it is necessary to open a hole on the container equipment body, and then weld a pipe on the hole for easy use. The surface to be opened is not limited to the plane, but usually includes the cylindrical surface, the vault surface, etc. The opening is generally a circular surface, and the intersection line between the combination of the surfaces is usually a complex spatial curve. For example, opening a circular hole on the side of a cylinder will form a saddle surface, and the points on its edge line are not in the same plane.

[0003] Welding is the main processing method of over-control equipment. After the container is opened, the workload of welding the pipe on the opening will be affected by the shape of the groove. When the opening diameter is small or the wall thickness of the opening surface is thin, the groove form has little effect on the subsequent welding workload, but when the opening surface thickness is large and the opening diameter is large, the welding workload corresponding to different groove shapes is obviously different. The appropriate groove shape can not only reduce labor costs, but also save welding materials. At present, there are many processing methods for welding grooves. For processing welding grooves on planes, the processing method is simple, the equipment types are many and have been maturely applied. When processing welding grooves on complex curved surfaces, although manual tools are highly flexible, the processing accuracy is poor, the efficiency is low, and the labor intensity of workers is high. The use of CNC equipment can achieve very high processing accuracy, but the over-control equipment is generally large in size, which requires the use of large equipment to process welding grooves. The price of CNC machine tools themselves is very high, and its operation also requires processing personnel to have certain programming skills and work experience. These increase production costs and are not conducive to improving the competitiveness of enterprises.

[0004] It can be seen that designing a complex curved surface welding groove processing device with low cost, easy operation and wide application range is of great significance for reducing the welding processing workload and reducing the equipment manufacturing cost. Summary of the invention

[0005] In order to overcome the problem that, when processing welding grooves on complex curved surfaces, manual tools are highly flexible but have poor processing accuracy, low efficiency, and high labor intensity for workers, the present invention provides a complex curved surface welding groove processing device. The present invention uses a differential method to divide the edge curve of the complex curved surface to be processed into multiple parts, and uses support bars to translate the height of each section to form a motor motion track parallel to the curve to be processed. At the same time, in view of the characteristics that the size of the large openings on the container is designed according to the national standard size series, the device is equipped with a corresponding size adjustment template, so that the device can process large openings of different sizes on complex curved surfaces. The device is fixed to the surface of the equipment to be processed by a magnetorheological suction cup, which can not only increase the rigidity of the equipment and reduce the influence of equipment deformation on the processing accuracy, but also expand the scope of application of the complex curved surface welding groove processing device.

[0006] The technical solution adopted by the present invention is:

[0007] A device for processing a complex curved surface welding groove comprises a magnetorheological suction cup, a guard ring, a rigid strut assembly, a clamping force adjustment shaft, a processing template and a plurality of processing units, wherein the guard ring is arranged on the outer wall of the processing template, the clamping force adjustment shaft is arranged directly above the center of the processing template, and a plurality of processing units are arranged between the lower part of the clamping force adjustment shaft and the inner wall of the processing template; the upper end of the guard ring is connected to the upper part of the clamping force adjustment shaft through the rigid strut assembly, the lower end of the guard ring is connected to the upper end of the magnetorheological suction cup, the lower surface of the processing template is in contact with and connected to the upper surface of the magnetorheological suction cup; the lower end of the magnetorheological suction cup is connected to the surface to be processed.

[0008] The processing unit at least includes roller A, a guard ring, a movable support bar assembly, a flexible strut, a locking nut, roller B, a reducer, a motor and a contour tool. The motor is connected to the lower part of the clamping force adjustment shaft through the flexible strut; the locking nut is arranged at the lower part of the clamping force adjustment shaft; the upper end of the motor is connected to the reducer, the upper end of the reducer is connected to the upper end of the movable support bar assembly through roller B, and the lower end of the motor is connected to the lower part of the movable support bar assembly through roller A; the movable support bar assembly is arranged on the inner wall of the processing mold, and the lower end of the movable support bar assembly extends downward through the magnetorheological suction cup and is fixedly connected to the surface to be processed; the contour tool is arranged at the lower end of the motor.

[0009] The movable support bar assembly is composed of multiple support bars connected in sequence, and the multiple support bars are connected and combined into a chain structure that is adapted to the size of the inner wall of the processing mold. The bottom end of each support bar contacts the surface to be processed, and the upper end surface of the support bar forms a processing track after the curve to be processed is moved up to the same height.

[0010] The support bars are long strip structures with a bend at the lower end and equal length.

[0011] The cross section of the magnetorheological suction cup is a capsule-like structure, the outer layer is a rubber-like soft film, the interior is filled with magnetorheological fluid and is arranged with an electromagnet.

[0012] The roller B is in the shape of a stepped shaft.

[0013] The retaining ring is connected to the magnetorheological chuck via a set screw A, and a plurality of threaded holes with different heights are arranged on the retaining ring.

[0014] The processing master mold is a hollow cylinder.

[0015] The rigid support rod assembly includes a vertical section, a corner section, an inclined section and an internal threaded section. The vertical section, corner section, inclined section and internal threaded section are connected in sequence into one. The lower end of the vertical section is fixedly connected to the retaining ring by a set screw B; the internal threaded section is connected to the upper part of the clamping force adjustment shaft.

[0016] The clamping force adjustment shaft is a cylinder with a boss in the middle, and threads are provided at the upper and lower ends of the cylinder. The uppermost cylindrical surface is symmetrically processed with parallel planes. The rigid strut assembly is located above the middle boss, and the flexible strut is located below the middle boss; the flexible strut limits the axial position of the flexible strut by a locking nut located below the middle boss.

[0017] The beneficial effects of the present invention are:

[0018] In the processing of the welding groove of the present invention, the intersection line of the complex curved surface and the open cylindrical surface is a spatial curve. The present invention decomposes the spatial curve to be processed into a plurality of tiny segments, transmits the curve to be processed at equal height through a movable support bar to form a motion track of the processing unit, designs a reasonable support and adjustment device, enables the processing unit to run smoothly, utilizes different templates, enables the diameter of the processing hole to be changed according to a standard series, and designs a magnetorheological suction cup as a support of the processing device according to the characteristic that the state of the magnetorheological fluid can change under the action of a magnetic field, so that it can be adsorbed on the surface to be processed, drives the profiling tool to rotate through a motor, and drives the processing unit to move on the track at the same time, so as to realize the function of processing the welding groove on the complex curved surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the convex surface processed by the structure of the present invention.

[0020] Figure 2 It is a main top view schematic diagram of the structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the main structure of the concave surface processed by the structure of the present invention.

[0022] In the figure, the reference numerals are: 1, magnetorheological suction cup; 2, roller A; 3, set screw A; 4, retaining ring; 5, movable support bar assembly; 6, set screw B; 7, rigid support rod assembly; 8, flexible support rod; 9, clamping force adjustment shaft; 10, locking nut; 11, roller B; 12, reducer; 13, machining template; 14, motor; 15, contour tool. DETAILED DESCRIPTION

[0023] Embodiment 1:

[0024] In order to overcome the problems that the existing manual tools have high flexibility but poor processing accuracy, low efficiency and high labor intensity for workers when processing welding grooves on complex curved surfaces, the present invention provides a Figure 1-3 The device for processing complex curved surface welding grooves shown in the figure uses differential method to divide the edge curve of the complex curved surface to be processed into multiple parts, and uses support bars to translate the height of each section to form a motor motion track parallel to the curve to be processed. At the same time, in view of the characteristics that the size of the large openings on the container is designed according to the national standard size series, the device is equipped with corresponding size adjustment templates, so that the device can process large openings of different sizes on complex curved surfaces. The device is fixed to the surface of the equipment to be processed by a magnetorheological suction cup, which can not only increase the rigidity of the equipment and reduce the influence of equipment deformation on the processing accuracy, but also expand the scope of application of the device for processing complex curved surface welding grooves.

[0025] A device for processing a complex curved surface welding groove comprises a magnetorheological suction cup 1, a retaining ring 4, a rigid support rod assembly 7, a clamping force adjustment shaft 9, a processing template 13 and a plurality of processing units, wherein the retaining ring 4 is arranged on the outer wall of the processing template 13, the clamping force adjustment shaft 9 is arranged just above the center of the processing template 13, and a plurality of processing units are arranged between the lower part of the clamping force adjustment shaft 9 and the inner wall of the processing template 13; the upper end of the retaining ring 4 is connected to the upper part of the clamping force adjustment shaft 9 through the rigid support rod assembly 7, the lower end of the retaining ring 4 is connected to the upper end of the magnetorheological suction cup 1, the lower surface of the processing template 13 is in contact with the upper surface of the magnetorheological suction cup 1; and the lower end of the magnetorheological suction cup 1 is connected to the surface to be processed.

[0026] The magnetorheological chuck 1 in the present invention can fix the retaining ring 4 on the surface to be processed according to the angle corresponding to the processing requirements. The cross-section of the magnetorheological chuck 1 is a sac-like structure, the outer layer is a rubber soft film, the interior is filled with magnetorheological fluid and an electromagnet is arranged. After the position of the retaining ring 4 is determined on the surface to be processed, the bottom surface of the magnetorheological chuck 1 is fitted with the surface to be processed, and the electromagnet is energized. Then the magnetorheological fluid is magnetized, the viscosity of the liquid increases rapidly, and it becomes solid and is fixed on the surface to be processed under the action of the magnetic field.

[0027] The complex curved surface welding groove processing device provided by the present invention is equipped with a magnetorheological suction cup 1. By utilizing the property of magnetorheological fluid that can be converted from liquid to solid under the action of a magnetic field, the entire device can be effectively fixed on the surface to be processed when the electromagnet is energized. The retaining ring 4 and the processing mold 13 define the circumferential position of the processing unit. At the same time, the combination of the rigid support rod assembly 7 and the flexible support rod 8 provides a reliable pushing force and pressure for the processing unit, so that the processing unit is stably stressed during operation. The movable support bar assembly 5 is a chain structure, and the processing unit movement track is formed by the method of the lower end contacting the track to be processed, and the vertical rigidity of the support bar is increased. The device is equipped with a tool 15 that is adapted to the shape of the groove to be processed, which can realize the function of processing complex curved surface welding grooves.

[0028] Embodiment 2:

[0029] Based on Example 1, in this embodiment, preferably, the processing unit at least includes roller A2, a guard ring 4, a movable support bar assembly 5, a flexible strut 8, a locking nut 10, a roller B11, a reducer 12, a motor 14 and a contour tool 15, the motor 14 is connected to the lower part of the clamping force adjusting shaft 9 through the flexible strut 8; the locking nut 10 is arranged at the lower part of the clamping force adjusting shaft 9; the upper end of the motor 14 is connected to the reducer 12, the upper end of the reducer 12 is connected to the upper end of the movable support bar assembly 5 through the roller B11, and the lower end of the motor 14 is connected to the lower part of the movable support bar assembly 5 through the roller A2; the movable support bar assembly 5 is arranged on the inner wall of the processing mold 13, and the lower end of the movable support bar assembly 5 extends downward through the magnetorheological suction cup 1 and is fixedly connected to the surface to be processed; the contour tool 15 is arranged at the lower end of the motor 14.

[0030] The machining master mold 13 provided by the present invention is used to determine the size of the hole to be machined. Its structure is a hollow cylinder. The inner surface of the machining master mold 13 serves as the support of the movable support bar 5 along the circumferential direction. The inner wall size can be adjusted by different master molds or combinations of different master molds to ensure stable supporting force. In the present invention, the flexible support rod 8 can be deformed under the action of external force. The symmetrical structure can reduce the friction between the flexible support rod 8 and the clamping force adjustment shaft 9. The flexible support rod 8 is connected to the motor 14 through a hinge and provides outward thrust and downward pressure.

[0031] Preferably, the movable support bar assembly 5 is composed of multiple support bars connected in sequence, and the multiple support bars are connected and combined into a chain structure that is adapted to the inner wall size of the processing mold 13. The bottom end of each support bar is in contact with the surface to be processed, and the upper end surface of the support bar forms a processing track after the curve to be processed is moved up to the same height.

[0032] Preferably, the support bars are long strip structures with a bend at the lower end and equal length.

[0033] In the present invention, the movable support bar assembly 5 is composed of many strip structures with bent lower ends and equal lengths, and the end points are located at the curve to be processed. The lateral dimension of the support bar is very small, and adjacent support bars can be rotated at a certain angle through a rotating pair and can slide axially. When working, multiple movable support bars are connected and combined into a chain structure that is adapted to the inner wall size of the processing mold 13, so that the bottom end of each movable support bar contacts the surface to be processed, and the upper end surface of the support bar forms a processing track after the curve to be processed is moved up to the same height. Under the action of magnetic force, the chain formed by the movable support bar assembly 5 is fixed on the processing mold 13 and the magnetorheological suction cup 1.

[0034] Preferably, the cross-section of the magnetorheological chuck 1 is a capsule-like structure, the outer layer is a rubber-like soft film, the interior is filled with magnetorheological fluid and an electromagnet is arranged.

[0035] The magnetorheological chuck 1 in the present invention can fix the retaining ring 4 on the surface to be processed according to the angle corresponding to the processing requirements. The cross-section of the magnetorheological chuck 1 is a sac-like structure, the outer layer is a rubber soft film, the interior is filled with magnetorheological fluid and an electromagnet is arranged. After the position of the retaining ring 4 is determined on the surface to be processed, the bottom surface of the magnetorheological chuck 1 is fitted with the surface to be processed, and the electromagnet is energized. Then the magnetorheological fluid is magnetized, the viscosity of the liquid increases rapidly, and it becomes solid and is fixed on the surface to be processed under the action of the magnetic field.

[0036] Preferably, the roller B11 is in the shape of a stepped shaft.

[0037] Preferably, the retaining ring 4 is connected to the magnetorheological chuck 1 via a set screw A3, and the retaining ring 4 is provided with a plurality of threaded holes of different heights.

[0038] In the present invention, the retaining ring 4 is connected to the magnetorheological chuck 1 by a set screw A3. The retaining ring 4 has threaded holes of different heights, which facilitates the adjustment of the relative height between the retaining ring 4 and the magnetorheological chuck to improve the applicability of the processing device.

[0039] Preferably, the machining master mold 13 is a hollow cylinder.

[0040] Preferably, the rigid support rod assembly 7 includes a vertical section, a corner section, an inclined section and an internal threaded section, and the vertical section, the corner section, the inclined section and the internal threaded section are connected in sequence into one, and the lower end of the vertical section is fixedly connected to the guard ring 4 by a set screw B6; the internal threaded section is connected to the upper part of the clamping force adjustment shaft 9.

[0041] In the present invention, the vertical section of the rigid support rod assembly 7 is connected to the retaining ring 4 via the set screw B6 to increase the rigidity of the retaining ring 4.

[0042] Preferably, the clamping force adjustment shaft 9 is a cylinder with a boss in the middle, the upper and lower ends of the cylinder are provided with threads, and the uppermost cylindrical surface is symmetrically processed with parallel planes. The rigid strut assembly 7 is located above the middle boss, and the flexible strut 8 is located below the middle boss; the flexible strut 8 limits the axial position of the flexible strut 8 by the locking nut 10 located below the middle boss.

[0043] The two mutually parallel planes symmetrically processed on the upper end of the pressing force adjusting shaft 9 are for the convenience of using a wrench to screw the pressing force adjusting shaft 9 .

[0044] In the present invention, the output shaft of the motor 14 drives the profiling tool 15 to rotate through a connecting device. The connecting device can be a clamp or a chuck. Considering that if the back cutting amount is too large, the motor load may be too large. A telescopic tool can be used to slowly feed the tool, that is, the processing unit is allowed to process in layers instead of processing in place at one time. According to different groove requirements, the corresponding tool can be selected, and a tool with a telescopic device can also be selected.

[0045] In the present invention, the motor 14 and the reducer 12 are an integrated structure. The speed of the motor 14 is reduced and reversed after passing through the reducer 12. The output shaft drives the roller B11 to rotate. The roller B11 is in the shape of a stepped shaft. Due to the thrust and pressure provided by the flexible support rod 8 and the driving force of the reducer 12, the roller can move on the track formed by the upper end surface of the movable support bar assembly 5 and maintain contact with the track. The roller A2 is installed at the lower end of the motor 14 body to facilitate the smooth operation of the motor and keep the movable support bar assembly 5 under force balance.

[0046] like Figure 1 As shown, the magnetorheological suction cup 1 of the present invention is used as a fixing device of the groove processing device to adsorb the entire processing device on the surface to be processed; the roller A2 is used to provide support for the lower end of the motor 14, and the resistance of the motor when it moves along the track is reduced by rolling; the set screw A3 can adjust the relative position between the magnetorheological suction cup 1 and the retaining ring 4; the retaining ring 4 is the main body of the processing device; the movable support bar assembly 5 is used to limit the position of the processing unit in the vertical direction; the set screw B6 is used to connect the retaining ring 4 and the rigid support rod assembly 7; the rigid support rod assembly 7 is the support of the clamping force adjustment shaft 9; the flexible support rod 8 provides downward pressure and outward thrust for the operation of the processing unit; the clamping force adjustment shaft 9 is used to adjust the clamping force and the pushing force; the locking nut 10 is used to limit the position of the flexible support rod 8; the roller B11 can drive the processing unit to move along the track; the reducer 12 reduces the output speed of the motor and provides power for the driving wheel; the processing template 13 can adjust the size of the hole to be processed; the motor 14 is used to drive the processing unit to work; the profiling tool 15 performs cutting processing of the welding groove.

[0047] The working process of the present invention: before work, select the retaining ring 4 and the processing template 13 corresponding to the size of the hole to be processed, select a certain shape and number of movable support bars according to the condition of the surface to be processed, and assemble them into a movable support bar assembly 5. During installation, first connect the magnetorheological suction cup 1 and the retaining ring 4 together through the set screw A3, and place them on the surface to be processed. Since the magnetorheological suction cup is a soft structure, care must be taken during the placement process so that it does not hinder the subsequent installation of other parts; secondly, install the processing template 13 from the top of the equipment, so that the bottom end of the movable support bar assembly 5 contacts the surface to be processed, and its side is basically attached to the inner surface of the processing template. The angle and position of the retaining ring 4 can be adjusted using auxiliary tools, and then the magnetorheological suction cup 1 is energized to make it adsorbed on the surface to be processed. Under the action of the magnetic field, the movable support bar assembly 5 is also adsorbed on the processing template. mold; then, install the processing unit on the flexible support rod 8, and connect it to the movable support bar assembly 5 through rollers A2 and rollers B11; then, connect the clamping force adjusting shaft 9 to the rigid support rod assembly 7, adjust the clamping force adjusting shaft to the top of the rigid support rod assembly, fix the rigid support rod assembly 7 to the retaining ring 4 through the set screws B6, and the clamping force adjusting shaft 9 passes through the sleeve in the center of the flexible support rod 8 and is tightened by the locking nut 10. Rotate the clamping force adjusting shaft 9 so that it has appropriate pushing force and clamping force on the processing unit; finally, power on the motor, and the device can process the welding groove.

[0048] The present invention decomposes the space curve to be processed into many small segments, transmits the curve to be processed with equal height through movable support bars to form the motion track of the processing unit, designs reasonable support and adjustment devices, so that the processing unit can run smoothly, uses different templates, so that the diameter of the processing hole can be changed according to the standard series, and designs a magnetorheological suction cup 1 as a support of the processing device according to the characteristic that the state of the magnetorheological fluid can change under the action of the magnetic field, so that it can be adsorbed on the surface to be processed, and the motor 14 drives the profiling tool 15 to rotate and drive the processing unit to move on the track at the same time, so as to realize the function of processing the welding groove on the complex curved surface. Because the magnetorheological suction cup 1 is changeable in shape before power is turned on, the device can also process the surface that is at a certain angle to the processed surface. According to the requirements of the surface to be processed, the shape of the magnetorheological suction cup 1 is adjusted. So as to be suitable for different complex curved surface welding groove processing, the device structure is compact and reasonable, and has good practicality.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for processing complex curved surface welding grooves, characterized in that: A magnetorheological suction cup (1), a retaining ring (4), a rigid support rod assembly (7), a clamping force adjustment shaft (9), a processing template (13) and a plurality of processing units, wherein the retaining ring (4) is arranged on the outer wall of the processing template (13), the clamping force adjustment shaft (9) is arranged just above the center of the processing template (13), and a plurality of processing units are arranged between the lower part of the clamping force adjustment shaft (9) and the inner wall of the processing template (13); the upper end of the retaining ring (4) is connected to the upper part of the clamping force adjustment shaft (9) through the rigid support rod assembly (7), the lower end of the retaining ring (4) is connected to the upper end of the magnetorheological suction cup (1), and the processing template (13) is connected to the inner wall of the processing template (13). ) is in contact with the upper surface of the magnetorheological chuck (1); the lower end of the magnetorheological chuck (1) is connected to the surface to be processed; the processing unit at least comprises a roller A (2), a retaining ring (4), a movable support bar assembly (5), a flexible support rod (8), a locking nut (10), a roller B (11), a reducer (12), a motor (14) and a contour tool (15); the motor (14) is connected to the lower part of the clamping force adjustment shaft (9) through the flexible support rod (8); the locking nut (10) is arranged at the lower part of the clamping force adjustment shaft (9); the upper end of the motor (14) is connected to the reducer ( 12), the upper end of the reducer (12) is connected to the upper end of the movable support bar assembly (5) through the roller B (11), and the lower end of the motor (14) is connected to the lower part of the movable support bar assembly (5) through the roller A (2); the movable support bar assembly (5) is arranged on the inner wall of the processing template (13), and the lower end of the movable support bar assembly (5) extends downward through the magnetorheological suction cup (1) and is fixedly connected to the surface to be processed; the profiling tool (15) is arranged at the lower end of the motor (14); the movable support bar assembly (5) is composed of a plurality of support bars connected in sequence, and the plurality of support bars are connected and combined to form a processing template (13). The inner wall size of the workpiece mold (13) is adapted to the chain structure, the bottom end of each support bar contacts the surface to be processed, and the upper end surface of the support bar forms a processing track after the curve to be processed is moved up to the same height; the clamping force adjustment shaft (9) is a cylinder with a boss in the middle, the upper and lower ends of the cylinder are provided with threads, and the uppermost cylindrical surface is symmetrically processed with parallel planes, the rigid support rod assembly (7) is located above the middle boss, and the flexible support rod (8) is located below the middle boss; the flexible support rod (8) limits the axial position of the flexible support rod (8) through the locking nut (10) located below the middle boss.

2. A complex curved surface welding groove processing device according to claim 1, characterized in that: The support bars are long strip structures with a bend at the lower end and equal length.

3. The device for processing complex curved surface welding groove according to claim 1, characterized in that: The cross-section of the magnetorheological suction cup (1) is a capsule-like structure, the outer layer is a rubber-like soft membrane, the interior is filled with magnetorheological fluid and is arranged with an electromagnet.

4. The device for processing complex curved surface welding groove according to claim 1, characterized in that: The roller B (11) is in the shape of a stepped shaft.

5. The device for processing complex curved surface welding groove according to claim 1, characterized in that: The retaining ring (4) is connected to the magnetorheological chuck (1) via a set screw A (3), and the retaining ring (4) is provided with a plurality of threaded holes of different heights.

6. The device for processing complex curved surface welding groove according to claim 1, characterized in that: The processing master mold (13) is a hollow cylinder.

7. The device for processing complex curved surface welding groove according to claim 1, characterized in that: The rigid support rod assembly (7) comprises a vertical section, a corner section, an inclined section and an internal thread section, wherein the vertical section, the corner section, the inclined section and the internal thread section are connected in sequence to form a whole, and the lower end of the vertical section is fixedly connected to the retaining ring (4) via a set screw B (6); and the internal thread section is connected to the upper part of the clamping force adjustment shaft (9).

8. A method for using a complex curved surface welding groove processing device according to any one of claims 1 to 7, characterized in that: The specific steps are: Before working, a retaining ring (4) and a machining master mold (13) corresponding to the size of the hole to be machined are selected, and a certain shape and number of movable support bars are selected according to the condition of the surface to be machined, and they are assembled into a movable support bar assembly (5); During installation, the magnetorheological suction cup (1) and the retaining ring (4) are first connected together by means of a set screw A (3) and placed on the surface to be processed; secondly, the processing template (13) is installed from the top of the equipment so that the bottom end of the movable support bar assembly (5) contacts the surface to be processed and the side thereof is basically attached to the inner surface of the processing template, and the angle and position of the retaining ring (4) are adjusted by using an auxiliary tool, and then the magnetorheological suction cup (1) is energized so that it is adsorbed on the surface to be processed. Under the action of the magnetic field, the movable support bar assembly (5) is also adsorbed on the processing template; thereafter, the processing unit is installed on the flexible support rod (8) and is rolled. Wheel A (2) and roller B (11) are connected to the movable support bar assembly (5); then, the clamping force adjustment shaft (9) is connected to the rigid support rod assembly (7), the clamping force adjustment shaft is adjusted to the top of the rigid support rod assembly, the rigid support rod assembly (7) is fixed to the retaining ring (4) by the set screw B (6), the clamping force adjustment shaft (9) passes through the sleeve at the center of the flexible support rod (8), and is tightened by the locking nut (10), and the clamping force adjustment shaft (9) is rotated so that it has appropriate pushing force and clamping force on the processing unit; finally, the motor is powered on, and the complex curved surface welding groove processing device can process the welding groove.

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