A valve body clamp tool

Abstract

The utility model discloses a valve body clamp frock, valve body clamp frock includes: frock base, two first clamping mechanism and a plurality of second clamping mechanism, first clamping mechanism is located frock base's both ends respectively, and the second clamping mechanism is located between two first clamping mechanism, and the first clamping mechanism forms the installation station with adjacent second clamping mechanism or adjacent two second clamping mechanism, be provided with a plurality of limiting mechanisms on frock base, and the limiting mechanism is distributed in the corresponding installation station, any limiting mechanism includes: first drive assembly and limiting rod, and the limiting rod is fixed in the output of drive assembly, and the limiting rod is driven in along the working direction movement by first drive assembly, the utility model discloses through setting limiting rod and first drive assembly, make the length of limiting rod bare in installation station lengthen, increase the depth of limiting rod insertion corresponding station, increase the friction of limiting rod and corresponding workpiece, reduce the risk that workpiece appears small -range deviation in the processing.

Description

Technical Field

[0001] This utility model relates to the field of fixtures and tooling, and in particular to a valve body fixture and tooling. Background Technology

[0002] In machining processes, clamping fixtures are typically used to hold the workpiece in place to prevent it from moving and affecting machining accuracy. However, current clamping fixtures only clamp the workpiece, and this single clamping operation can cause a slight shift in the workpiece during machining, leading to a reduction in machining accuracy. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a valve body fixture. By setting a limiting rod and a first driving component, the length of the limiting rod exposed in the installation position is increased, the depth of the limiting rod inserted into the corresponding position is increased, the friction between the limiting rod and the corresponding workpiece is increased, the risk of small displacement of the workpiece during processing is reduced, and the processing accuracy is improved.

[0004] Accordingly, this utility model proposes a valve body clamping fixture, which includes: a fixture base, two first clamping mechanisms and multiple second clamping mechanisms;

[0005] Two first clamping mechanisms are located at both ends of the tooling base, and a plurality of second clamping mechanisms are located between the two first clamping mechanisms. Any first clamping mechanism and an adjacent second clamping mechanism or two adjacent second clamping mechanisms form an installation station.

[0006] The tooling base is provided with multiple limiting mechanisms, and two of the multiple limiting mechanisms are distributed in a corresponding installation station;

[0007] Any of the aforementioned limiting mechanisms includes: a first driving component and a limiting rod, wherein the limiting rod is fixed to the output end of the driving component and is driven by the first driving component to move along the working direction.

[0008] Preferably, the tooling base is provided with multiple limiting bosses and multiple supporting bosses, and the multiple limiting bosses and multiple supporting bosses are distributed in the corresponding installation positions.

[0009] Preferably, a limiting post is provided on the upper end face of any of the limiting protrusions, and the limiting post is located at the center of the upper end face of the limiting protrusion.

[0010] Preferably, the first clamping mechanism includes a second driving component and a first clamping component, wherein the output end of the second driving component is connected to the first clamping component;

[0011] The first clamping component is driven by the second driving component to switch between a clamped state and a released state.

[0012] Preferably, the first clamping assembly includes: a first clamping block and a first connecting rod, the first clamping block being rotatably connected to the output end of the second driving assembly, one end of the first connecting rod being rotatably connected to the first clamping block, and the other end of the first connecting rod being rotatably connected to the second driving assembly;

[0013] The first connecting rod is driven to rotate by the second driving component, and the rotation of the first connecting rod causes the first clamping block to rotate.

[0014] Preferably, the second clamping mechanism includes: a third driving component and a second clamping component, wherein the output end of the third driving component is connected to the second clamping component;

[0015] The second clamping component is driven by the third driving component to switch between a clamped state and a released state.

[0016] Preferably, the second clamping assembly includes: a second clamping block, a third clamping block, a second connecting rod, and a third connecting rod;

[0017] Both the second clamping block and the third clamping block are connected to the output end of the third drive assembly. One end of the second connecting rod is connected to the second clamping block, and the other end of the second connecting rod is rotatably connected to the third drive assembly. One end of the third connecting rod is connected to the third clamping block, and the other end of the third connecting rod is connected to the third drive assembly.

[0018] The second connecting rod is driven to rotate by the third driving assembly, and the rotation of the second connecting rod causes the second clamping block to rotate.

[0019] The third connecting rod is driven to rotate by the third driving assembly, and the rotation of the third connecting rod causes the third clamping block to rotate.

[0020] Preferably, the second clamping block and the second connecting rod are symmetrically distributed with respect to the third clamping block and the third connecting rod based on the output end of the third drive assembly.

[0021] Preferably, the valve body fixture further includes two symmetrically distributed chucks, one of which is connected to one end of the fixture base.

[0022] Preferably, the valve body fixture is made of metal.

[0023] The beneficial effects of this utility model are:

[0024] This invention incorporates multiple limiting mechanisms and clamping mechanisms on a valve body fixture. These mechanisms work together to ensure the workpiece is fixed in its corresponding mounting position, reducing the risk of workpiece vibration during processing and improving machining accuracy. Furthermore, the invention includes a limiting rod and a first driving assembly. Driven by the first driving assembly, the limiting rod moves forward along the working direction, increasing its length exposed in the mounting position. This increases the depth of insertion of the limiting rod into the corresponding position, increasing the friction between the limiting rod and the workpiece, improving impact resistance, and reducing the risk of slight workpiece displacement during processing, thereby enhancing machining accuracy. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the first structure of the valve body fixture tooling in this utility model;

[0027] Figure 2 This is a schematic diagram of the second structure of the valve body fixture tooling in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the first clamping mechanism in this utility model;

[0029] Figure 4 This is a schematic diagram of the first structure of the second clamping mechanism in this utility model;

[0030] Figure 5 This is a schematic diagram of the second structure of the second clamping mechanism in this utility model;

[0031] Figure 6 This is a schematic diagram of the limiting mechanism in this utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the first driving component in this utility model.

[0033] In the attached diagram: 1. Tooling base; 2. First clamping mechanism; 21. Second drive assembly; 22. First clamping assembly; 221. First clamping block; 222. First connecting rod; 3. Second clamping mechanism; 31. Third drive assembly; 32. Second clamping assembly; 321. Second clamping block; 322. Second connecting rod; 323. Third clamping block; 324. Third connecting rod; 4. Limiting mechanism; 41. First drive assembly; 42. Limiting rod; 5. Limiting boss; 51. Limiting post; 6. Supporting boss; 7. Installation station; 8. Chuck. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] Figure 1 This shows a schematic diagram of the first structure of the valve body fixture tooling in this utility model. Figure 2 This shows a schematic diagram of the second structure of the valve body fixture tooling in this utility model. Figure 3 A schematic diagram of the first clamping mechanism in this utility model is shown. Figure 4 This invention shows a schematic diagram of the first structure of the second clamping mechanism. Figure 5 This invention shows a schematic diagram of the second structure of the second clamping mechanism. Figure 6 A schematic diagram of the limiting mechanism in this utility model is shown. Figure 7A schematic diagram of the structure of the first driving component in this utility model is shown. The valve body clamping fixture includes: a fixture base 1, two first clamping mechanisms 2, and multiple second clamping mechanisms 3. The two first clamping mechanisms 2 are respectively located at both ends of the fixture base 1, and the multiple second clamping mechanisms 3 are located between the two first clamping mechanisms 2. An installation station 7 is formed between any one of the first clamping mechanisms 2 and an adjacent second clamping mechanism 3 or between two adjacent second clamping mechanisms 3. Multiple limiting mechanisms 4 are provided on the fixture base 1, and two of the multiple limiting mechanisms 4 are correspondingly distributed in a corresponding installation station 7. Each of the limiting mechanisms 4 includes: a first driving component 41 and a limiting rod 42. The limiting rod 42 is fixed to the output end of the first driving component 41, and the limiting rod 42 moves along the working direction under the drive of the first driving component 41. In this embodiment, the tooling base 1 has two second clamping mechanisms 3, which are located between two first clamping mechanisms 2. The distance between two adjacent second clamping mechanisms 3 is equal to the distance between any second clamping mechanism 3 and an adjacent first clamping mechanism 2. That is, the distance between any two adjacent first clamping mechanisms 2 and two adjacent second clamping mechanisms 3 is equal, forming three identical mounting stations 7. The number of second clamping mechanisms 3 can be adjusted according to the usage. When more workpieces need to be clamped, the number of second clamping mechanisms 3 can be increased, so that more mounting stations 7 can be formed on the tooling base 1. The tooling base 1 is provided with six limiting mechanisms 4. Two of the six limiting mechanisms 4 are correspondingly distributed in one of the three mounting stations 7, and the two limiting mechanisms 4 located in the same mounting station 7 are symmetrical about the center line of the mounting station 7. Each of the limiting mechanisms 4 includes a first driving component 41 and a limiting rod 42. The side of the first driving component 41 near the output end is fixedly connected to the bottom of the tooling base 1. Each of the limiting rods 42 passes through the tooling base 1, and one end of the limiting rod 42 is connected to the output end of the first driving component 41. When the first driving component 41 outputs power, it pushes the corresponding limiting rod 42 to move in the working direction.The working direction of the limiting rod 42 is perpendicular to the upper surface of the base fixture. When the limiting rod 42 is driven by the first driving component 41 to move forward along the working direction, the length of the limiting rod 42 exposed in the mounting station 7 increases, thereby increasing the insertion depth of the limiting rod 42 into the corresponding station, increasing the friction between the limiting rod 42 and the corresponding workpiece, improving impact resistance, and reducing the risk of small displacement of the workpiece during processing, thus improving processing accuracy. When the limiting rod 42 is driven by the first driving component 41 to move backward along the working direction, the length of the limiting rod 42 exposed in the mounting station 7 decreases, thereby reducing the insertion depth of the limiting rod 42 into the corresponding station, reducing the friction between the limiting rod 42 and the corresponding workpiece, making it easier for the operator to remove the workpiece from the mounting station 7. The clamping mechanism and the limiting mechanism 4 simultaneously fix the corresponding workpiece in the corresponding mounting station 7, ensuring that the workpiece can be fixed in the corresponding mounting station 7, which helps to reduce the risk of workpiece vibration during processing and improve processing accuracy.

[0036] Furthermore, the tooling base 1 is provided with multiple limiting bosses 5 and multiple supporting bosses 6. Two of the limiting bosses 5 and two of the supporting bosses 6 are distributed in a corresponding installation station 7. In this embodiment, the tooling base 1 is provided with six limiting bosses 5 and six supporting bosses 6. Two of the six limiting bosses 5 are distributed in a corresponding position of one of the three installation stations 7, and two of the six supporting bosses 6 are distributed in a corresponding position of one of the three installation stations 7. That is, one installation station 7 corresponds to two limiting bosses 5 and two supporting bosses 6. If the number of installation stations 7 on the fixture tooling increases, the number of supporting bosses 6 and limiting bosses 5 also increases accordingly, and adjustments are made according to different usage conditions. The supporting boss 6 is used to elevate the workpiece. During processing, handling, or assembly, if the bottom of the workpiece directly contacts the bottom of the tooling, scratches or wear are easily caused by friction and collision. The supporting boss 6 can effectively isolate the workpiece from the tooling, reducing this direct contact, thereby protecting the surface quality of the workpiece bottom and ensuring the workpiece's accuracy and aesthetics. The limiting boss 5 also has the function of elevating the workpiece, but its main function is to limit the movement range of the tooling, preventing the workpiece from shifting slightly due to vibration during processing, which could lead to inaccurate processing. This helps to fix the workpiece in the corresponding position and improve processing accuracy.

[0037] It should be noted that each mounting station 7 has two limiting bosses 5 and two supporting bosses 6, which are respectively distributed at the four corners of the mounting station 7. Each adjacent limiting boss 5 is adjacent to the other two supporting bosses 6; that is, the two limiting bosses 5 are located diagonally opposite each other in the mounting station 7, and similarly, the two supporting bosses 6 are located at two opposite corners of the mounting station 7. The supporting bosses 6 at the two diagonal positions can provide a more balanced supporting force for the workpiece, keeping the workpiece stable on the tooling and reducing problems such as tilting and wobbling caused by insufficient single-point support or local support. This is beneficial for improving the positioning accuracy of the workpiece during processing or assembly.

[0038] Furthermore, a limiting post 51 is provided on the upper end face of any of the limiting bosses 5, and the limiting post 51 is located at the center of the upper end face of the limiting boss 5. In this embodiment, the edge of the upper end face of the limiting post 51 is recessed, so that the top of the limiting post 51 forms a hemispherical shape, which can reduce the frictional resistance during workpiece positioning. Secondly, the central limiting post 51 ensures that the valve body workpiece is subjected to uniform force during clamping, avoiding workpiece deformation or vibration caused by eccentric clamping, which helps to ensure that the corresponding workpiece is fixed in the corresponding position.

[0039] Furthermore, the first clamping mechanism 2 includes a second driving component 21 and a first clamping component 22. The output end of the second driving component 21 is connected to the first clamping component 22. The first clamping component 22 is driven by the second driving component 21 to switch between a clamping state and a loosening state. In this embodiment, when the second driving component 21 drives the first clamping component 22 to move so that the first clamping component 22 is in the clamping state, the first clamping component 22 presses and clamps the corresponding workpiece onto the corresponding mounting station 7. That is, the first clamping component 22 presses one side of the upper surface of the corresponding workpiece. By pressing one side of the upper surface of the workpiece, the first clamping component 22 can increase the friction between the workpiece and the mounting station 7, making the workpiece more firmly fixed on the mounting station 7. When the first clamping component 22 is in the loosening state, the first clamping component 22 has no contact with the corresponding workpiece, making it convenient for employees to remove or replace the workpiece from the corresponding mounting station 7.

[0040] Furthermore, the first clamping assembly 22 includes a first clamping block 221 and a first connecting rod 222. The first clamping block 221 is rotatably connected to the output end of the second driving assembly 21. One end of the first connecting rod 222 is rotatably connected to the first clamping block 221, and the other end of the first connecting rod 222 is rotatably connected to the second driving assembly 21. The first connecting rod 222 rotates under the drive of the second driving assembly 21, and the rotation of the first connecting rod 222 causes the first clamping block 221 to rotate. In this embodiment, one end of the first connecting rod 222 is rotatably connected to the upper end face of the second driving component 21, and the other end of the first connecting rod 222 is rotatably connected to the first clamping block 221. When the output end of the second driving component 21 outputs in the forward direction, the first clamping block 221 rotates in the forward direction. At the same time, the first connecting rod 222 is driven by the first clamping block 221 to rotate in a direction closer to the installation station 7 with the connection point between the first connecting rod 222 and the second driving component 21 as the center. This gives the first connecting rod 222 a vertical supporting force on the first clamping block 221, and one side of the first connecting rod 222 is in contact with the workpiece, ensuring that the first clamping block 221 can be fixed in the corresponding position and press and clamp the workpiece. When the output end of the second driving component 21 outputs in the reverse direction, the first clamping block 221 rotates in the reverse direction. At the same time, the first connecting rod 222 is driven by the first clamping block 221 to rotate in a direction away from the installation station 7, so that one side of the first connecting rod 222 is not in contact with the workpiece, making it convenient for the workpiece to be taken out or replaced from the corresponding installation station 7.

[0041] It should be noted that the forward rotation of the first clamping block 221 is a rotation that moves closer to the installation station 7, and the reverse rotation of the first clamping block 221 is a rotation that moves away from the installation station 7.

[0042] Furthermore, the second clamping mechanism 3 includes a third driving component 31 and a second clamping component 32. The output end of the third driving component 31 is connected to the second clamping component 32. The second clamping component 32 is driven by the third driving component 31 to switch between a clamping state and a loosening state. In this embodiment, when the third driving component 31 drives the second clamping component 32 to move so that the second clamping component 32 is in the clamping state, the second clamping component 32 presses and clamps the corresponding workpiece onto the corresponding mounting station 7. That is, the second clamping component 32 presses one side of the upper surface of the corresponding workpiece. By pressing one side of the upper surface of the workpiece, the second clamping component 32 can increase the friction between the workpiece and the mounting station 7, making the workpiece more firmly fixed on the mounting station 7. When the second clamping component 32 is in the loosening state, the second clamping component 32 has no contact with the corresponding workpiece, making it convenient for employees to remove or replace the workpiece from the corresponding mounting station 7.

[0043] Furthermore, the second clamping assembly 32 includes: a second clamping block 321, a third clamping block 323, a second connecting rod 322, and a third connecting rod 324; the second clamping block 321 and the third clamping block 323 are both connected to the output end of the third driving assembly 31; one end of the second connecting rod 322 is connected to the second clamping block 321, and the other end of the second connecting rod 322 is rotatably connected to the third driving assembly 31; one end of the third connecting rod 324 is connected to the third clamping block 323, and the other end of the third connecting rod 324 is connected to the third driving assembly 31; the second connecting rod 322 rotates under the drive of the third driving assembly 31, and the rotation of the second connecting rod 322 causes the second clamping block 321 to rotate; the third connecting rod 324 rotates under the drive of the third driving assembly 31, and the rotation of the third connecting rod 324 causes the third clamping block 323 to rotate. In this embodiment, one end of the second connecting rod 322 is rotatably connected to the upper end face of the third driving assembly 31, and the other end of the second connecting rod 322 is rotatably connected to the first clamping block 221. When the output end of the third driving assembly 31 outputs in the positive direction, the first clamping block 221 rotates in the positive direction. At the same time, the second connecting rod 322 is driven by the first clamping block 221 to rotate in a direction closer to the installation position 7 with the connection point between the second connecting rod 322 and the third driving assembly 31 as the center. This causes the second connecting rod 322 to rotate relative to the installation position 7. The first clamping block 221 has a vertical supporting force, and one side of the second connecting rod 322 is in contact with the workpiece, ensuring that the first clamping block 221 can be fixed in the corresponding position and clamp the workpiece. When the output end of the third driving assembly 31 outputs in the reverse direction, the first clamping block 221 rotates in the reverse direction, and at the same time, the second connecting rod 322 is driven by the first clamping block 221 to rotate away from the installation station 7, so that one side of the second connecting rod 322 is not in contact with the workpiece, making it convenient for the workpiece to be removed or replaced from the corresponding installation station 7. Similarly, the working principle of the third clamping block 323 and the third connecting rod 324 is the same as that of the second clamping block 321 and the second connecting rod 322, and will not be described in detail here.

[0044] It should be noted that the second clamping block 321 and the third clamping block 323 in the two adjacent second clamping mechanisms 3 simultaneously press against the workpiece installed at the installation station 7 formed by the two adjacent second clamping mechanisms 3.

[0045] Furthermore, the second clamping block 321 and the second connecting rod 322 are symmetrically distributed with the third clamping block 323 and the third connecting rod 324 based on the output end of the third drive assembly 31. In this embodiment, when the third drive assembly 31 moves, it can simultaneously drive the second clamping block 321 to rotate with the connection point between the second clamping block 321 and the second connecting rod 322 as a reference, and the third clamping block 323 to rotate with the connection point between the third clamping block 323 and the third connecting rod 324 as a reference. The rotation direction of the second clamping block 321 is opposite to the rotation direction of the third clamping block 323, ensuring that the second clamping block 321 and the third clamping block 323 can simultaneously clamp or release the corresponding workpiece.

[0046] Furthermore, the valve body fixture also includes two symmetrically distributed chucks 8, one of which is connected to one end of the fixture base 1. In this embodiment, any one of the chucks 8 is connected to the end of the corresponding fixture base 1 where the first clamping assembly 22 is provided, and the two symmetrically distributed chucks 8 are simultaneously connected to both ends of the valve body fixture. A rotatable connecting part is embedded in the center of each chuck 8, and the connecting part has a connecting rod that can connect to an external motor or base. When the connecting part is driven to rotate externally, it drives the entire valve body fixture to rotate, allowing the entire valve body fixture to rotate to a corresponding angle, facilitating processing and improving processing efficiency.

[0047] Furthermore, the valve body fixture is made of metal. Metal has high yield strength and tensile strength, which can withstand the cutting force, clamping force and vibration impact during valve body machining. Moreover, the high rigidity of the metal fixture can effectively suppress machining vibration, avoid surface roughness deterioration and dimensional deviation caused by chatter, and help improve machining accuracy.

[0048] In summary, this utility model, by setting multiple limiting mechanisms and multiple clamping mechanisms on the valve body fixture, ensures that the workpiece can be fixed in the corresponding installation position through the cooperation of the limiting mechanisms and clamping mechanisms. This helps to reduce the risk of workpiece vibration during processing and improves processing accuracy. This utility model also sets a limiting rod and a first driving assembly. The limiting rod is driven by the first driving assembly to move forward along the working direction, increasing the length of the limiting rod exposed in the installation position. This increases the depth of the limiting rod inserted into the corresponding position, increases the friction between the limiting rod and the corresponding workpiece, improves impact resistance, and reduces the risk of small displacement of the workpiece during processing, thereby improving processing accuracy.

[0049] Furthermore, the above description provides a detailed overview of the valve body fixture provided in the embodiments of this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A valve body fixture, characterized in that, The valve body clamping fixture includes: a fixture base, two first clamping mechanisms, and multiple second clamping mechanisms; Two first clamping mechanisms are located at both ends of the tooling base, and a plurality of second clamping mechanisms are located between the two first clamping mechanisms. Any first clamping mechanism and an adjacent second clamping mechanism or two adjacent second clamping mechanisms form an installation station. The tooling base is provided with multiple limiting mechanisms, and two of the multiple limiting mechanisms are distributed in a corresponding installation station; Any of the aforementioned limiting mechanisms includes: a first driving component and a limiting rod, wherein the limiting rod is fixed to the output end of the driving component and is driven by the first driving component to move along the working direction.

2. The valve body fixture according to claim 1, characterized in that, The tooling base is provided with multiple limiting bosses and multiple supporting bosses, and two of the multiple limiting bosses and two of the multiple supporting bosses are distributed in a corresponding installation station.

3. The valve body fixture according to claim 2, characterized in that, A limiting post is provided on the upper end face of any of the limiting bosses, and the limiting post is located at the center of the upper end face of the limiting boss.

4. The valve body fixture according to claim 1, characterized in that, The first clamping mechanism includes: a second driving component and a first clamping component, wherein the output end of the second driving component is connected to the first clamping component; The first clamping component is driven by the second driving component to switch between a clamped state and a released state.

5. A valve body fixture according to claim 4, characterized in that, The first clamping assembly includes: a first clamping block and a first connecting rod, wherein the first clamping block is rotatably connected to the output end of the second driving assembly, one end of the first connecting rod is rotatably connected to the first clamping block, and the other end of the first connecting rod is rotatably connected to the second driving assembly; The first connecting rod is driven to rotate by the second driving component, and the rotation of the first connecting rod causes the first clamping block to rotate.

6. A valve body fixture according to claim 5, characterized in that, The second clamping mechanism includes: a third driving component and a second clamping component, wherein the output end of the third driving component is connected to the second clamping component; The second clamping component is driven by the third driving component to switch between a clamped state and a released state.

7. A valve body fixture according to claim 6, characterized in that, The second clamping assembly includes: a second clamping block, a third clamping block, a second connecting rod, and a third connecting rod; Both the second clamping block and the third clamping block are connected to the output end of the third drive assembly. One end of the second connecting rod is connected to the second clamping block, and the other end of the second connecting rod is rotatably connected to the third drive assembly. One end of the third connecting rod is connected to the third clamping block, and the other end of the third connecting rod is connected to the third drive assembly. The second connecting rod is driven to rotate by the third driving assembly, and the rotation of the second connecting rod causes the second clamping block to rotate. The third connecting rod is driven to rotate by the third driving assembly, and the rotation of the third connecting rod causes the third clamping block to rotate.

8. A valve body fixture according to claim 7, characterized in that, The second clamping block and the second connecting rod are symmetrically distributed with respect to the third clamping block and the third connecting rod based on the output end of the third drive assembly.

9. A valve body fixture according to claim 5, characterized in that, The valve body fixture also includes two symmetrically distributed chucks, one of which is connected to one end of the fixture base.

10. A valve body fixture according to claim 1, characterized in that, The valve body fixture is made of metal.

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