Precise special-shaped flange clamping tool

Abstract

The utility model relates to a precise special-shaped flange clamping tool, and relates to the technical field of flange machining, the precise special-shaped flange clamping tool comprises a base, a flange body, a clamping assembly and a reinforcing assembly, and the flange body is arranged on the base; the clamping assembly is arranged on the base and used for clamping the flange body. The reinforcing assembly is arranged on the base and used for reinforcing the stability of the flange body. The flange has the effect of improving the stability of the flange.

Description

Technical Field

[0001] The present application relates to the technical field of flange processing, and in particular to a precision special-shaped flange clamping tool. Background Art

[0002] Special-shaped flanges are used as sealing and fastening connectors, also known as special-shaped flanges. They are widely used in large containers in the fields of aerospace, petroleum, and chemical industry. In order to facilitate the processing of flanges, it is necessary to clamp the flanges with the help of clamping devices.

[0003] At present, the general device includes a flange chuck, a straight groove is provided on the positioning surface of the flange chuck, and a movable positioning pin is arranged in the straight groove. The size of the positioning pin matches the inner diameter of the flange hole. By inserting the positioning pin into a flange hole, the flange is positioned on the flange chuck by adopting a single-hole positioning method.

[0004] However, when the single-hole positioning method is adopted, the flange is in a free state and can rotate or move, resulting in poor stability of the flange, thereby increasing the difficulty of processing. Utility Model Content

[0005] In order to improve the stability of the flange, the present application provides a precision special-shaped flange clamping tool.

[0006] The present application provides a precision special-shaped flange clamping tool, which adopts the following technical solution:

[0007] A precision special-shaped flange clamping tool comprises a base, a flange body, a clamping assembly and a reinforcement assembly, wherein the flange body is arranged on the base; the clamping assembly is arranged on the base and is used to clamp the flange body; the reinforcement assembly is arranged on the base and is used to enhance the stability of the flange body.

[0008] By adopting the above technical solution, the clamping assembly clamps the flange body through the countersunk hole of the flange body, so that the flange body can be firmly fixed on the base, and the reinforcement assembly performs secondary clamping on the end face of the flange body. Through the synergistic effect of the clamping assembly and the reinforcement assembly, rapid clamping can be achieved, which not only ensures the stability during the processing, but also greatly improves the processing accuracy.

[0009] Optionally, the clamping assembly includes a positioning rod, a supporting airbag and a clamping airbag, the positioning rod is vertically fixed to the base; the supporting airbag is fixed to the base and sleeved on the positioning rod; the clamping airbag is fixed to the supporting airbag and sleeved on the positioning rod, and the clamping airbag is located on the side of the supporting airbag away from the base; the supporting airbag is connected to the clamping airbag, and the cross-sections of the two along the axial direction of the positioning rod are stepped.

[0010] By adopting the above technical solution, the countersunk hole of the flange body can be sleeved on the clamping airbag through the positioning guidance of the positioning rod, and then, under the action of gravity, the flange body squeezes the supporting airbag, and the internal volume of the supporting airbag is reduced. Since the supporting airbag is connected to the clamping airbag, the internal volume of the clamping airbag is increased, the clamping airbag expands due to interference, and is tightly pressed against the countersunk hole of the flange body, making the flange body less likely to shake or displace, thereby improving the stability of the flange.

[0011] Optionally, the reinforcement assembly includes a driving part and a fixing part, the driving part is arranged on the positioning rod, the fixing part is arranged on the driving part, and the driving part is used to drive the fixing part to reinforce the flange body.

[0012] By adopting the above technical solution, through the cooperation of the driving part and the fixing part, the driving part drives the fixing part to reinforce the flange body, so that the flange is not easy to shake during the processing, thereby further enhancing the stability of the flange body and further improving the processing accuracy of the flange body.

[0013] Optionally, the driving part includes a driving telescopic rod, a sliding rod and an extrusion block, the driving telescopic rod is fixed on the positioning rod, and the movable end is arranged in a direction close to the flange body, and the rodless cavity of the driving telescopic rod is connected to the clamping airbag; the sliding rod is slidably connected to the movable end of the driving telescopic rod, and the sliding direction is a vertical direction; the extrusion block is fixed to a side of the sliding rod close to the flange body and is provided with a guide ramp, and the side of the extrusion block away from the guide ramp is arranged in a direction close to the positioning rod; in an initial state, the extrusion block is located in the countersunk hole of the flange body.

[0014] By adopting the above technical scheme, under the action of gravity of the flange body, the clamping airbag expands due to interference fit and is tightly pressed against the countersunk hole of the flange body. Due to the interference fit expansion of the clamping airbag, the internal volume of the clamping airbag increases. Since the rodless cavity of the driving telescopic rod is connected to the clamping airbag, excess gas inside the clamping airbag enters the rodless cavity of the driving telescopic rod, and the volume of the rodless cavity of the driving telescopic rod increases. The movable end of the driving telescopic rod moves, and the movable end of the driving telescopic rod drives the sliding rod to move, and the sliding rod drives the extrusion block to move. The guide bevel of the extrusion block is squeezed against the edge of the hole of the countersunk hole of the flange body. As the movable end of the driving telescopic rod moves, the guide bevel of the extrusion block gradually separates from the countersunk hole of the flange body, and the extrusion block presses against the end face of the flange, making it difficult for the flange to shake during the processing, thereby further enhancing the stability of the flange body.

[0015] Optionally, the fixed part includes a fixed telescopic rod, a guide tube, an elastic block, a sensing box and a controller, the fixed telescopic rod is fixedly connected to the movable end of the driving telescopic rod, and the movable end is coaxially fixedly connected to the sliding rod, and the two ends of the guide tube are respectively connected to the rodless cavity and the rod cavity of the fixed telescopic rod; the guide tube is provided with a solenoid valve; the elastic block is fixedly connected to the side of the extrusion block close to the flange body, and the interior is hollow; the sensing box is fixedly mounted on the extrusion block, and is connected to the elastic block by a guide tube, and water flows through the two through the guide tube, and a liquid level sensor is fixedly mounted in the sensing box; the controller is fixedly mounted on the positioning rod, the solenoid valve and the liquid level sensor are both electrically connected to the controller, the liquid level sensor is used to output a liquid level signal in the sensing box, the controller responds to the liquid level signal output by the liquid level sensor, and is used to control the opening and closing of the solenoid valve.

[0016] By adopting the above technical solution, the guiding inclined surface of the extrusion block is squeezed with the edge of the hole of the flange body, the sliding rod drives the movable end of the fixed telescopic rod to move, the internal volume of the rodless cavity of the fixed telescopic rod is reduced, and the gas in the rodless cavity of the fixed telescopic rod passes through the guide pipe into the rod cavity;

[0017] As the movable end of the telescopic rod is driven to move, the guiding inclined surface of the extrusion block gradually separates from the countersunk hole of the flange body, the extrusion block abuts against the end face of the flange, the extrusion block drives the elastic block to be squeezed against the end face of the flange, and the internal volume of the elastic block is reduced. Since the sensing box and the elastic block are connected, the water in the elastic block enters the sensing box through the guide pipe, and the liquid level sensor outputs the liquid level signal in the sensing box to the controller. The controller responds to the liquid level signal output by the liquid level sensor and controls the solenoid valve to close. The extrusion block abuts against the end face of the flange and no longer moves, so that the device is easy to fix according to different shapes of the flange, thereby improving work efficiency.

[0018] Optionally, the reinforcement components are provided in multiple groups.

[0019] By adopting the above technical solution, multiple groups of reinforcement components can reinforce the flange body at the same time, and multiple groups of reinforcement components can provide a more comprehensive and uniform reinforcement effect, thereby significantly enhancing the stability of the flange body.

[0020] Optionally, a plurality of groups of the reinforcement components are evenly arranged around the axis of the positioning rod.

[0021] By adopting the above technical solution and evenly arranging the reinforcement components around the positioning rod, it is easy to ensure comprehensive and even reinforcement of the flange body, thereby improving the stability of the flange body.

[0022] Optionally, it also includes an unlocking component, which includes a control button and an air pump, the control button is fixed on the support airbag and is electrically connected to the controller; the air pump is connected to the support airbag through a connecting tube and is electrically connected to the controller; a valve is provided on the connecting tube.

[0023] By adopting the above technical solution, when the flange body needs to be removed, the valve is opened, and then the control button is started. The control button drives the solenoid valve to open, and at the same time drives the air pump to open, the air pump exhausts outward, and the internal gas of the supporting airbag and the clamping airbag is discharged together, and the two are restored to their original state, driving the gas in the rodless cavity of the telescopic rod to be discharged, and under the action of negative pressure, the movable end of the telescopic rod is driven to reset;

[0024] During the resetting process, the elastic block slides with the flange end face. When the elastic block is separated from the flange end face, the fixed telescopic rod is reset. At the same time, the elastic block returns to its original state, and water flows back into the elastic block. The liquid level sensor outputs the liquid level signal in the sensing box to the controller. The controller responds to the liquid level signal output by the liquid level sensor and controls the air pump to shut down, making the flange easy to take and put, thereby improving the convenience of operation.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. By setting the positioning rod, supporting airbag and clamping airbag, the flange body is not easy to shake or displace, thereby improving the stability of the flange;

[0027] 2. By setting the driving part and the fixing part, the device can be easily fixed according to the different shapes of the flange, thereby improving the working efficiency;

[0028] 3. By setting the control button and the air pump, the flange is easy to take and put, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0030] Figure 2 is a cross-sectional view of a clamping assembly in an embodiment of the present application;

[0031] Figure 3 yes Figure 2 Magnified view at A in the middle;

[0032] Figure 4 yes Figure 3 Magnified view at B.

[0033] Description of reference numerals:

[0034] 1. Base; 2. Flange body; 3. Clamping assembly; 31. Positioning rod; 32. Support airbag; 33. Clamping airbag; 331. Through hole; 4. Reinforcement assembly; 41. Driving part; 411. Driving telescopic rod; 4111. Conduit; 412. Sliding rod; 413. Extrusion block; 42. Fixing part; 421. Fixing telescopic rod; 422. Guide tube; 4221. Solenoid valve; 423. Elastic block; 424. Induction box; 4241. Guide tube; 4242. Liquid level sensor; 425. Controller; 5. Unlocking assembly; 51. Control button; 52. Air pump; 53. Connecting pipe; 54. Valve. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] The present application embodiment discloses a precision special-shaped flange clamping tool. Figure 1 and Figure 2 A precision special-shaped flange clamping tool includes a base 1, a flange body 2, a clamping assembly 3, a reinforcement assembly 4 and an unlocking assembly 5. The flange body 2 is arranged on the base 1; the clamping assembly 3 is arranged on the base 1 and is used to clamp the flange body 2; the reinforcement assembly 4 is arranged on the base 1 and is used to enhance the stability of the flange body 2; the two ends of the unlocking assembly 5 are respectively connected to the clamping assembly 3 and the reinforcement assembly 4, and are used to release the fixing state of the clamping assembly 3 and the reinforcement assembly 4 on the flange body 2.

[0037] When in use, the clamping component 3 clamps the flange body 2 through the countersinking of the flange body 2, and the reinforcement component 4 performs secondary clamping on the end face of the flange body 2. When the processing is completed, the unlocking component 5 releases the fixing state of the clamping component 3 and the reinforcement component 4 on the flange body 2, thereby ensuring the stability during the processing and greatly improving the processing accuracy.

[0038] Reference Figure 1 and Figure 2 The base 1 is in a rectangular block shape and is arranged horizontally. The clamping assembly 3 includes a positioning rod 31, a supporting airbag 32 and a clamping airbag 33. The positioning rod 31 is in a circular column shape and is arranged vertically. The positioning rod 31 is fixedly connected to the center of the base 1. The supporting airbag 32 is in a circular ring shape and is fixedly arranged on the base 1. The supporting airbag 32 is sleeved on the positioning rod 31 and abuts against the positioning rod 31.

[0039] The clamping airbag 33 is in a circular ring shape and is located on the side of the supporting airbag 32 away from the base 1. The clamping airbag 33 is fixedly connected to the supporting airbag 32 and is sleeved on the positioning rod 31. The clamping airbag 33 abuts against the positioning rod 31. The outer diameter of the clamping airbag 33 is smaller than the outer diameter of the supporting airbag 32. The cross-section of the supporting airbag 32 and the clamping airbag 33 along the vertical direction is stepped. The supporting airbag 32 and the clamping airbag 33 are connected through the through hole 331, and air flows through the through hole 331.

[0040] When in use, the countersunk hole of the flange body 2 is passed through the positioning rod 31, and the flange body 2 is placed on the supporting airbag 32. Under the action of gravity, the flange body 2 squeezes the supporting airbag 32, and the air in the supporting airbag 32 enters the clamping airbag 33. The clamping airbag 33 expands due to interference and presses against the countersunk hole of the flange body 2, making it difficult for the flange body 2 to shake or move, thereby improving the stability of the flange.

[0041] Reference Figure 1 and Figure 2 The reinforcement components 4 are provided with multiple groups, and the multiple groups of reinforcement components 4 are evenly arranged around the axis of the positioning rod 31. The reinforcement components 4 include a driving part 41 and a fixing part 42.

[0042] Reference Figures 1 to 3 The driving part 41 includes a driving telescopic rod 411, a sliding rod 412 and an extrusion block 413. The driving telescopic rod 411 is fixed on the top of the positioning rod 31 and is arranged horizontally. The movable end of the driving telescopic rod 411 is arranged in a direction close to the flange body 2. The rodless cavity of the driving telescopic rod 411 is connected to the clamping airbag 33 by a conduit 4111, and air flows between the two through the conduit 4111.

[0043] The slide bar 412 is slidably connected to the movable end of the driving telescopic rod 411, and the sliding direction is the vertical direction. The extrusion block 413 is fixedly connected to the side of the slide bar 412 close to the flange body 2, and the extrusion block 413 is provided with a guide slope. The side of the extrusion block 413 away from the guide slope is arranged in the direction close to the positioning rod 31. In the initial state, the extrusion block 413 is located in the countersunk hole of the flange body 2.

[0044] Reference Figure 3 and Figure 4 The fixed part 42 includes a fixed telescopic rod 421, a guide tube 422, an elastic block 423, a sensing box 424 and a controller 425. The fixed telescopic rod 421 is vertically arranged and fixedly connected to the movable end of the driving telescopic rod 411. The movable end of the fixed telescopic rod 421 is coaxially fixedly connected to the sliding rod 412.

[0045] Reference Figure 3 and Figure 4The two ends of the flow guide tube 422 are respectively connected to the rodless cavity and the rod cavity of the fixed telescopic rod 421, and the flow guide tube 422 is provided with a solenoid valve 4221. The elastic block 423 is hollow inside and is fixedly connected to the side of the extrusion block 413 close to the flange body 2.

[0046] Reference Figure 3 and Figure 4 The induction box 424 is fixed on the extrusion block 413, and is connected to the elastic block 423 by a guide tube 4241, and water flows through the guide tube 4241. A liquid level sensor 4242 is fixed in the induction box 424. The controller 425 is fixed on the positioning rod 31, and the solenoid valve 4221 and the liquid level sensor 4242 are both electrically connected to the controller 425.

[0047] Reference Figure 3 and Figure 4 The liquid level sensor 4242 is used to output the liquid level signal in the sensing box 424 , and the controller 425 responds to the liquid level signal output by the liquid level sensor 4242 and is used to control the opening and closing of the solenoid valve 4221 .

[0048] When in use, under the action of gravity of the flange body 2, the clamping airbag 33 expands due to interference, and is pressed against the countersunk hole of the flange body 2, and then, the excess air inside the clamping airbag 33 enters the rodless cavity of the driving telescopic rod 411, and the air squeezes and drives the movable end of the telescopic rod 411 to move, and the movable end of the driving telescopic rod 411 drives the sliding rod 412 to move, and the sliding rod 412 drives the squeezing block 413 to move, and the guiding inclined surface of the squeezing block 413 is squeezed with the edge of the hole of the countersunk hole of the flange body 2, and the sliding rod 412 drives the movable end of the fixed telescopic rod 421 to move, and the air in the rodless cavity of the fixed telescopic rod 421 passes through the guide tube 422 and enters the rod cavity;

[0049] As the movable end of the telescopic rod 411 is driven to move, the guiding inclined surface of the extrusion block 413 gradually separates from the countersunk hole of the flange body 2, and the extrusion block 413 abuts against the end face of the flange. The extrusion block 413 drives the elastic block 423 to be squeezed against the end face of the flange, and the water in the elastic block 423 enters the sensing box 424 through the guide pipe 4241. The liquid level sensor 4242 outputs the liquid level signal in the sensing box 424 to the controller 425. The controller 425 responds to the liquid level signal output by the liquid level sensor 4242 and controls the solenoid valve 4221 to be closed. The extrusion block 413 abuts against the end face of the flange and no longer moves, so that the device can be easily fixed according to different shapes of the flange, thereby improving work efficiency.

[0050] Reference Figure 2 and Figure 4The unlocking assembly 5 includes a control button 51 and an air pump 52. The control button 51 is fixed on the supporting airbag 32 and is electrically connected to the controller 425. The air pump 52 is connected to the supporting airbag 32 through a connecting pipe 53 and is electrically connected to the controller 425. A valve 54 is provided on the connecting pipe 53.

[0051] During use, when the flange body 2 needs to be removed, the valve 54 is opened, and then the control button 51 is activated. The control button 51 drives the solenoid valve 4221 to open, and at the same time drives the air pump 52 to open, the air pump 52 exhausts air outward, the supporting airbag 32 and the clamping airbag 33 are restored to their original state, and the gas in the rodless cavity of the telescopic rod 411 is driven to be discharged. Under the action of negative pressure, the movable end of the telescopic rod 411 is driven to reset;

[0052] During the resetting process, the elastic block 423 slides with the flange end face. When the elastic block 423 is separated from the flange end face, the fixed telescopic rod 421 is reset. At the same time, the elastic block 423 returns to its original state, and water flows back into the elastic block 423. The liquid level sensor 4242 outputs the liquid level signal in the sensing box 424 to the controller 425. The controller 425 responds to the liquid level signal output by the liquid level sensor 4242 and controls the air pump 52 to be turned off, so that the flange is easy to take and put, thereby improving the convenience of operation.

[0053] The implementation principle of a precision special-shaped flange clamping tool in the embodiment of the present application is as follows: under the action of gravity, the flange body 2 squeezes the supporting airbag 32, the air in the supporting airbag 32 enters the clamping airbag 33, the clamping airbag 33 expands due to interference, and is pressed against the countersunk hole of the flange body 2;

[0054] Then, the excess air inside the clamping airbag 33 enters the rodless cavity of the driving telescopic rod 411, and the air squeezes the movable end of the driving telescopic rod 411 to drive the sliding rod 412 to move, and the sliding rod 412 drives the extrusion block 413 to move, and the guiding inclined surface of the extrusion block 413 is squeezed with the edge of the hole of the flange body 2, and the sliding rod 412 drives the movable end of the fixed telescopic rod 421 to move, and the air in the rodless cavity of the fixed telescopic rod 421 passes through the guide tube 422 and enters the rod cavity;

[0055] As the movable end of the driving telescopic rod 411 moves, the guiding inclined surface of the extrusion block 413 gradually separates from the countersunk hole of the flange body 2, and the extrusion block 413 abuts against the flange end surface. The extrusion block 413 drives the elastic block 423 to be squeezed against the flange end surface, and the water in the elastic block 423 enters the sensing box 424 through the guide pipe 4241. The liquid level sensor 4242 outputs the liquid level signal in the sensing box 424 to the controller 425. The controller 425 responds to the liquid level signal output by the liquid level sensor 4242 and controls the solenoid valve 4221 to close. The extrusion block 413 abuts against the flange end surface and no longer moves.

[0056] When the flange body 2 needs to be removed, the valve 54 is opened, and then the control button 51 is activated. The control button 51 drives the solenoid valve 4221 to open, and at the same time drives the air pump 52 to open. The air pump 52 exhausts air outward, and the supporting airbag 32 and the clamping airbag 33 are restored to their original state, and the gas in the rodless cavity of the telescopic rod 411 is driven to be discharged. Under the action of negative pressure, the movable end of the telescopic rod 411 is driven to reset;

[0057] During the resetting process, the elastic block 423 slides with the flange end face. When the elastic block 423 is separated from the flange end face, the fixed telescopic rod 421 is reset. At the same time, the elastic block 423 returns to its original state, and water flows back into the elastic block 423. The liquid level sensor 4242 outputs the liquid level signal in the sensing box 424 to the controller 425. The controller 425 responds to the liquid level signal output by the liquid level sensor 4242 and controls the air pump 52 to be turned off, so that the flange body 2 is not easy to shake or displace, thereby improving the stability of the flange.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A precision special-shaped flange clamping tool, characterized by: The invention comprises a base (1), a flange body (2), a clamping assembly (3) and a reinforcement assembly (4), wherein the flange body (2) is arranged on the base (1); the clamping assembly (3) is arranged on the base (1) and is used to clamp the flange body (2); and the reinforcement assembly (4) is arranged on the base (1) and is used to enhance the stability of the flange body (2).

2. The precision special-shaped flange clamping tool according to claim 1 is characterized by: The clamping assembly (3) comprises a positioning rod (31), a supporting airbag (32) and a clamping airbag (33); the positioning rod (31) is vertically fixedly connected to the base (1); the supporting airbag (32) is fixedly arranged on the base (1) and sleeved on the positioning rod (31); the clamping airbag (33) is fixedly connected to the supporting airbag (32) and sleeved on the positioning rod (31); the clamping airbag (33) is located on a side of the supporting airbag (32) away from the base (1); the supporting airbag (32) is connected to the clamping airbag (33), and the cross-sections of the two along the axial direction of the positioning rod (31) are stepped.

3. The precision special-shaped flange clamping tool according to claim 2 is characterized in that: The reinforcement assembly (4) comprises a driving part (41) and a fixing part (42); the driving part (41) is arranged on the positioning rod (31); the fixing part (42) is arranged on the driving part (41); the driving part (41) is used to drive the fixing part (42) to reinforce the flange body (2).

4. The precision special-shaped flange clamping tool according to claim 3 is characterized by: The driving part (41) comprises a driving telescopic rod (411), a sliding rod (412) and an extrusion block (413); the driving telescopic rod (411) is fixedly mounted on the positioning rod (31), and the movable end is arranged in a direction close to the flange body (2); the rodless cavity of the driving telescopic rod (411) is connected to the clamping airbag (33); the sliding rod (412) is slidably connected to the movable end of the driving telescopic rod (411), and the sliding direction is a vertical direction; the extrusion block (413) is fixedly connected to a side of the sliding rod (412) close to the flange body (2), and is provided with a guiding inclined surface; the side of the extrusion block (413) away from the guiding inclined surface is arranged in a direction close to the positioning rod (31); in an initial state, the extrusion block (413) is located in the countersunk hole of the flange body (2).

5. The precision special-shaped flange clamping tool according to claim 4 is characterized in that: The fixed portion (42) comprises a fixed telescopic rod (421), a flow guide tube (422), an elastic block (423), a sensing box (424) and a controller (425); the fixed telescopic rod (421) is fixedly connected to the movable end of the driving telescopic rod (411), and the movable end is coaxially fixedly connected to the sliding rod (412); the two ends of the flow guide tube (422) are respectively connected to the rodless cavity and the rod cavity of the fixed telescopic rod (421); the flow guide tube (422) is provided with a solenoid valve (4221); the elastic block (423) is fixedly connected to a side of the extrusion block (413) close to the flange body (2), and is hollow inside; the sensing box (424) is fixedly arranged on the A guide tube (4241) is disposed on the extrusion block (413) and is in communication with the elastic block (423), and water flows through the guide tube (4241) between the two. A liquid level sensor (4242) is fixedly disposed in the induction box (424); the controller (425) is fixedly disposed on the positioning rod (31), the solenoid valve (4221) and the liquid level sensor (4242) are both electrically connected to the controller (425), the liquid level sensor (4242) is used to output a liquid level signal in the induction box (424), and the controller (425) responds to the liquid level signal output by the liquid level sensor (4242) and is used to control the opening and closing of the solenoid valve (4221).

6. The precision special-shaped flange clamping tool according to claim 3 is characterized by: The reinforcement components (4) are provided in multiple groups.

7. The precision special-shaped flange clamping tool according to claim 3 is characterized by: A plurality of groups of the reinforcement components (4) are evenly arranged around the axis of the positioning rod (31).

8. The precision special-shaped flange clamping tool according to claim 5, characterized in that: The invention also comprises an unlocking component (5), the unlocking component (5) comprising a control button (51) and an air pump (52), the control button (51) being fixedly mounted on the supporting airbag (32) and being electrically connected to the controller (425); the air pump (52) being in communication with the supporting airbag (32) via a connecting pipe (53) and being electrically connected to the control button (51); and a valve (54) being arranged on the connecting pipe (53).

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