Petroleum machinery part machining device

Abstract

The application belongs to the technical field of petroleum part department fine grinding, and particularly relates to a petroleum machinery part machining device, which comprises a machining machine tool and a multi-shaft moving table. A thick fine grinding mechanism and a multi-shaft arranged thin fine grinding mechanism are arranged above the multi-shaft moving table. A driving coupling is arranged between the thick fine grinding mechanism and the thin fine grinding mechanism. The thick fine grinding mechanism, the thin fine grinding mechanism and the driving coupling are arranged close to one side of the rotating external circle of a petroleum machinery valve rod through the multi-shaft moving table. At this time, the grinding mechanisms of the thick fine grinding mechanism and the thin fine grinding mechanism are connected through the driving coupling. The grinding mechanisms of the thick fine grinding mechanism and the thin fine grinding mechanism can rotate simultaneously through one driving source. When the thick fine grinding mechanism slowly moves the external circle of the valve body for fine grinding, the thin fine grinding mechanism can slowly move the similar different thick ring grooves or thin ring grooves for fine grinding, so that the time loss problem caused by fine grinding in the prior art is reduced.

Description

Technical Field

[0001] This invention belongs to the field of precision grinding of petroleum parts, specifically a processing device for petroleum machinery parts. Background Technology

[0002] In petroleum machinery, valve stems and valve cores are core valve components that directly affect the efficiency of oil extraction and transportation. Due to the high pressure, high corrosiveness, and solid particle content of petroleum media, valve stems and valve cores must have extremely high sealing performance and wear resistance. Therefore, it is necessary to perform precision grinding on their mating outer circles and sealing surfaces to reduce leakage and friction wear, thereby extending the service life of the valve. Furthermore, the secondary fine grinding of the valve stem can also achieve the purpose of recycling and reuse.

[0003] A patent document with publication number CN223532059U discloses a valve stem surface fine grinding device, including a device body, a grinding wheel and a transmission assembly. The transmission assembly is used to drive the grinding wheel to rotate. A base is slidably connected between the inner walls of the device body. The grinding wheel is driven to rotate between the inner walls of the device body by the transmission assembly. At the same time, the displacement assembly drives the displacement plate to move on the top of the base, thereby fine grinding the valve stem surface.

[0004] In traditional techniques for machining valve stems in petroleum machinery, fine grinding is typically required to improve machining quality and facilitate secondary repairs. A common approach involves clamping the valve stem and rotating it, then grinding its outer diameter, followed by grinding the multiple annular grooves of varying thicknesses on the stem. This completes the fine grinding of the entire valve stem. However, this process requires two grinding steps and may also involve manually re-clamping the valve stem, after outer diameter grinding, onto the annular groove grinding machine. This makes integrated, continuous, and precise machining difficult, resulting in low grinding efficiency and poor quality consistency.

[0005] Therefore, the present invention provides a processing device for petroleum machinery parts to solve the problems mentioned in the background art. Summary of the Invention

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The petroleum machinery parts processing device of the present invention includes a processing machine tool and a multi-axis moving table installed on the side of the processing machine tool. A thick fine grinding mechanism and a thin fine grinding mechanism with multiple axes are installed above the multi-axis moving table. A drive coupling is installed between the thick fine grinding mechanism and the thin fine grinding mechanism. The grinding structure of the thin fine grinding mechanism is linked with the grinding structure of the thick fine grinding mechanism through the drive coupling. Both adopt the same drive mechanism. A component for spraying grinding fluid is installed above the thick fine grinding mechanism and the thin fine grinding mechanism. The machine tool includes a push table that is slidably mounted on one end of the machine tool and a clamping table that is fixedly mounted on the other end of the machine tool. A valve body is rotatably clamped between the push table and the clamping table. The outer side of the valve body is provided with multiple thick annular grooves and thin annular grooves.

[0007] Preferably, a rotating clamping component one is rotatably mounted on the side of the clamping platform facing the pushing platform, and a rotating clamping component two is mounted on the side of the pushing platform facing the clamping platform. The rotating clamping component one and the rotating clamping component two are respectively matched with the two ends of the valve body.

[0008] Preferably, the multi-axis moving stage includes a fixed stage fixedly installed on the side of the machine tool and a translation stage slidably installed above the fixed stage. Multiple telescopic components are installed on the upper side of the translation stage, and a sliding stage is installed at one end of each telescopic component. The sliding stage is slidably installed above the translation stage.

[0009] Preferably, the thin-grinding mechanism includes a protective shell and U-shaped blocks installed on the upper and lower sides of the protective shell, with a set of U-shaped blocks slidably installed above the sliding table below the protective shell.

[0010] Preferably, the protective shell is slidably installed between the two U-shaped blocks. Multiple drive motors are installed on the sides of the U-shaped blocks. The drive motors drive the protective shell to slide inside the two U-shaped blocks. A grinding wheel is rotatably installed inside the protective shell.

[0011] Preferably, the thick fine grinding mechanism includes a second protective shell fixedly installed on a sliding table and a second grinding wheel rotatably installed inside the second protective shell. A fixed motor is fixedly installed on the side of the second protective shell, and the fixed motor is used to drive the second grinding wheel to rotate. The second grinding wheel is linked to the first grinding wheel through a drive coupling.

[0012] Preferably, the second protective shell is equipped with a plurality of pushing members on the sides of the two U-shaped blocks, and one end of the plurality of pushing members is connected to the side of the corresponding U-shaped block.

[0013] Preferably, the pushing member extends to drive the thin grinding mechanism as a whole to slide above the sliding table, increasing the distance between the thick grinding mechanism and the thin grinding mechanism.

[0014] Preferably, the thickness of the second grinding wheel is greater than the thickness of the first grinding wheel, and the thickness of the first grinding wheel is less than the thickness of the thin annular groove.

[0015] Preferably, the drive coupling includes a Schmidt coupling and a telescopic rod installed at the end of the Schmidt coupling. The end of the telescopic rod passes through a protective shell and is connected to a grinding wheel. The other end of the Schmidt coupling passes through a protective shell and is connected to a grinding wheel.

[0016] The beneficial effects of this invention are as follows: 1. The petroleum machinery parts processing device of the present invention, by setting a multi-axis moving table, brings the thick fine grinding mechanism, the thin fine grinding mechanism and the drive coupling close to the rotating outer circle of the petroleum machinery valve stem. At this time, the grinding mechanisms of the thick fine grinding mechanism and the thin fine grinding mechanism are connected through the drive coupling. Only one drive source is needed to realize the simultaneous rotation of the thick fine grinding mechanism and the thin fine grinding mechanism. When the thick fine grinding mechanism performs slow and fine grinding on the outer circle of the valve body, the thin fine grinding mechanism can perform slow and fine grinding on similar thick or thin annular grooves, reducing the time loss problem caused by traditional fine grinding.

[0017] 2. In the petroleum machinery parts processing device of the present invention, when the protective shell and the grinding wheel move along the X-axis on one side of the thick fine grinding mechanism, the Schmidt coupling will adapt and change, but always maintain the coupling between the grinding wheel and the grinding wheel. When the thin fine grinding mechanism moves along the Y-axis on one side of the thick fine grinding mechanism, multiple pushing components extend and retract. At this time, the telescopic rod will extend and retract adaptively, further maintaining the coupling between the grinding wheel and the grinding wheel, thereby achieving synchronous grinding and increasing the quality consistency of petroleum machinery valve stem grinding. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a perspective view of the entire invention; Figure 2 This is a three-dimensional schematic diagram of the machine tool used in this invention; Figure 3 This is a three-dimensional schematic diagram of the multi-axis moving stage in this invention; Figure 4 This is a three-dimensional schematic diagram of the thick fine grinding mechanism and the thin fine grinding mechanism in this invention; Figure 5 This is a three-dimensional schematic diagram of the first state of the drive coupling in this invention; Figure 6 This is a three-dimensional schematic diagram of the second state of the drive coupling in this invention.

[0020] In the diagram: 1. Machine tool; 11. Pushing table; 111. Rotating clamping component two; 12. Clamping table; 121. Rotating clamping component one; 2. Petroleum machinery valve stem; 21. Valve body; 22. Thin annular groove; 23. Thick annular groove; 3. Multi-axis moving table; 31. Fixed table; 32. Translation table; 33. Telescopic component; 34. Sliding table; 4. Thick fine grinding mechanism; 41. Protective shell two; 42. Grinding wheel two; 43. Fixed motor; 44. Pushing component; 5. Thin fine grinding mechanism; 51. U-shaped block; 511. Drive motor; 52. Protective shell one; 53. Grinding wheel one; 6. Drive coupling; 61. Schmidt coupling; 62. Telescopic rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1: As Figures 1-2 As shown, an embodiment of the present invention provides a petroleum machinery parts processing device, including a processing machine tool 1 and a multi-axis moving table 3 installed on the side of the processing machine tool 1. A thick fine grinding mechanism 4 and a thin fine grinding mechanism 5 with multiple axes are installed above the multi-axis moving table 3. A drive coupling 6 is installed between the thick fine grinding mechanism 4 and the thin fine grinding mechanism 5. The grinding structure of the thin fine grinding mechanism 5 is linked with the grinding structure of the thick fine grinding mechanism 4 through the drive coupling 6. Both adopt the same drive mechanism. A component for spraying grinding fluid is installed above the thick fine grinding mechanism 4 and the thin fine grinding mechanism 5. The machine tool 1 includes a push table 11 that is slidably mounted on one end of the machine tool 1 and a clamping table 12 that is fixedly mounted on the other end of the machine tool 1. A valve body 21 is rotatably clamped between the push table 11 and the clamping table 12. A plurality of thick annular grooves 23 and thin annular grooves 22 are provided on the outer side of the valve body 21.

[0023] Specifically, when the petroleum machinery valve stem 2 needs to be finely ground, the push table 11 is first driven to slide on the machine tool 1 to increase the distance between the clamping table 12 and the push table 11. Then, the petroleum machinery valve stem 2 is picked up and positioned between the push table 11 and the clamping table 12. The push table 11 is then driven to slide so that the push table 11 and the clamping table 12 clamp the petroleum machinery valve stem 2. At this time, the petroleum machinery valve stem 2 can rotate above the machine tool 1. The multi-axis moving table 3 is used to bring the thick fine grinding mechanism 4, the thin fine grinding mechanism 5, and the drive coupling 6 close to the rotating outer circle of the petroleum machinery valve stem 2. At this time, the grinding mechanisms of the thick fine grinding mechanism 4 and the thin fine grinding mechanism 5 are connected through the drive coupling 6. Only one drive source is needed to realize the simultaneous rotation of the grinding mechanisms of the thick fine grinding mechanism 4 and the thin fine grinding mechanism 5. At the same time, the thin fine grinding mechanism 5 can perform X-ray grinding on the side of the thick fine grinding mechanism 4. The movement along the Y-axis allows the thin grinding mechanism 5 to move away from the side of the valve body 21 while the thick grinding mechanism 4 is grinding near the rotating outer circle of the valve body 21. This increases the distance between the thin grinding mechanism 5 and the valve body 21. Then, the movement along the Y-axis ensures that the mechanism being ground by the thin grinding mechanism 5 is on the same vertical plane as the adjacent thick annular groove 23 or thin annular groove 22. Finally, the thin grinding mechanism 5 moves along the X-axis to approach the inner wall of the rotating groove of the adjacent thick annular groove 23 or thin annular groove 22 and grinds it. In other words, while the thick grinding mechanism 4 is slowly grinding the outer circle of the valve body 21, the thin grinding mechanism 5 can slowly grind different sets of thick annular grooves 23 or thin annular grooves 22. This reduces the time loss problem caused by traditional fine grinding and allows for integrated grinding of the same set of petroleum machinery valve stems 2, which is beneficial for improving the processing efficiency of parts.

[0024] like Figures 3-6 As shown, a rotating clamping component 121 is rotatably mounted on the side of the clamping platform 12 facing the push platform 11, and a rotating clamping component 111 is mounted on the side of the push platform 11 facing the clamping platform 12. The rotating clamping component 121 and the rotating clamping component 111 are respectively matched with the two ends of the corresponding valve body 21.

[0025] The multi-axis moving table 3 includes a fixed table 31 fixedly installed on the side of the machine tool 1 and a translation table 32 slidably installed above the fixed table 31. Multiple telescopic components 33 are installed on the upper side of the translation table 32, and a sliding table 34 is installed at one end of each of the multiple telescopic components 33. The sliding table 34 is slidably installed above the translation table 32.

[0026] The thin-grinding mechanism 5 includes a protective shell 52 and U-shaped blocks 51 installed on the upper and lower sides of the protective shell 52. A set of U-shaped blocks 51 below the protective shell 52 is slidably installed above the sliding table 34.

[0027] The protective shell 52 is slidably installed between two U-shaped blocks 51. Multiple drive motors 511 are installed on the side of the U-shaped blocks 51. The drive motors 511 drive the protective shell 52 to slide inside the two U-shaped blocks 51. A grinding wheel 53 is rotatably installed inside the protective shell 52.

[0028] The thick fine grinding mechanism 4 includes a second protective shell 41 fixedly installed on a sliding table 34 and a second grinding wheel 42 rotatably installed inside the second protective shell 41. A fixed motor 43 is fixedly installed on the side of the second protective shell 41. The fixed motor 43 is used to drive the second grinding wheel 42 to rotate. The second grinding wheel 42 is linked with the first grinding wheel 53 through a drive coupling 6.

[0029] The protective shell 41 has multiple pushing components 44 installed on the sides facing the two U-shaped blocks 51, and one end of each pushing component 44 is connected to the side of the corresponding U-shaped block 51.

[0030] The pushing component 44 extends to drive the thin fine grinding mechanism 5 to slide above the sliding table 34, increasing the distance between the thick fine grinding mechanism 4 and the thin fine grinding mechanism 5.

[0031] The thickness of the second grinding wheel 42 is greater than the thickness of the first grinding wheel 53, and the thickness of the first grinding wheel 53 is less than the thickness of the thin annular groove 22.

[0032] Specifically, the movement of the second rotating clamping member 111 reduces the distance between it and the first rotating clamping member 121, allowing it to clamp the petroleum machinery valve stem 2. When the second rotating clamping member 111 and the first rotating clamping member 121 rotate synchronously, they can drive the entire petroleum machinery valve stem 2 to rotate, adapting to subsequent fine grinding. The translation stage 32 can drive the sliding stage 34, the thick fine grinding mechanism 4, the thin fine grinding mechanism 5, and the drive coupling 6 to move towards the machine tool 1. Through the extension member 33, the sliding stage 34 can drive the thick fine grinding mechanism 4, the thin fine grinding mechanism 5, and the drive coupling 6 to move on the translation stage 32. Therefore, through the multi-axis movement of the multi-axis moving stage 3... The function allows the thin fine grinding mechanism 5 and the thick fine grinding mechanism 4 to approach the outer side of the petroleum machinery valve stem 2. Driven by the fixed motor 43, the second grinding wheel 42 rotates. Under the coupling action of the drive coupling 6, the second grinding wheel 42 and the first grinding wheel 53 can achieve synchronous rotation through the same drive mechanism. When the second grinding wheel 42 rotates and contacts the outer circle of the valve body 21 for grinding, the drive of the U-shaped block 51 allows the protective shell 52 to slide inside the two U-shaped blocks 51, first away from the outer side of the valve body 21, and then, under the action of the extension of multiple pushing components 44, the U-shaped block 51 drives the protective shell 52 and the first grinding wheel 53 above the sliding table 34. The grinding wheel 53 is slid until it is aligned with the adjacent thin annular groove 22 or thick annular groove 23 on the same vertical plane. Then, the protective shell 52 is driven by the U-shaped block 51 to slide inside the two U-shaped blocks 51, and then performs fine grinding on the inner wall surface of the adjacent thin annular groove 22 or thick annular groove 23. In other words, the grinding wheel 53 and the grinding wheel 42 work together. The grinding wheel 53 is used to perform fine grinding on the inner wall surface of the thin annular groove 22 and thick annular groove 23, while the grinding wheel 42 is used to perform fine grinding on the outer circle of the valve body 21. This allows for integrated grinding of the same set of petroleum machinery valve stems 2, reducing the number of processing steps. To minimize time loss, the protective shell 52 drives the grinding wheel 53 to move along the X and Y axes. After grinding a set of thin annular grooves 22 or thick annular grooves 23, the next set of thin annular grooves 22 or thick annular grooves 23 can be ground. At this time, the sliding table 34 will also drive the thin fine grinding mechanism 5, the drive coupling 6 and the thick fine grinding mechanism 4 to move and grind different rotating outer circles of the valve body 21. The distance between the thin fine grinding mechanism 5 and the thick fine grinding mechanism 4 should not be too large. Generally speaking, they are located above the sliding table 34. At this time, the grinding wheel 53 and the grinding wheel 42 are always connected through the drive coupling 6 to achieve synchronous grinding and increase the quality consistency of grinding the petroleum machinery valve stem 2.

[0033] Example 2: Figure 6As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the drive coupling 6 includes a Schmidt coupling 61 and a telescopic rod 62 installed at the end of the Schmidt coupling 61. The end of the telescopic rod 62 passes through the protective shell 52 and is connected to the grinding wheel 53. The other end of the Schmidt coupling 61 passes through the protective shell 41 and is connected to the grinding wheel 42.

[0034] Specifically, when the protective shell 52 and the grinding wheel 53 move along the X-axis on one side of the thick fine grinding mechanism 4, the Schmidt coupling 61 will adapt accordingly, but will always maintain the coupling between the grinding wheel 53 and the grinding wheel 42. When the thin fine grinding mechanism 5 moves along the Y-axis on one side of the thick fine grinding mechanism 4, multiple pushing components 44 will extend and retract. At this time, the telescopic rod 62 will extend and retract accordingly, further maintaining the coupling between the grinding wheel 53 and the grinding wheel 42, thereby achieving synchronous grinding and increasing the quality consistency of the grinding of the petroleum machinery valve stem 2.

[0035] Working principle: When fine grinding of the petroleum machinery valve stem 2 is required, the push table 11 is first driven to slide on the machine tool 1, increasing the distance between the clamping table 12 and the push table 11. Then, the petroleum machinery valve stem 2 is picked up and positioned between the push table 11 and the clamping table 12. The push table 11 is then driven to slide, causing the push table 11 and the clamping table 12 to clamp the petroleum machinery valve stem 2. At this time, the petroleum machinery valve stem 2 can rotate above the machine tool 1. The multi-axis moving table 3 is used to bring the thick fine grinding mechanism 4, the thin fine grinding mechanism 5, and the drive coupling 6 close to the rotating outer circle of the petroleum machinery valve stem 2. At this time, the grinding mechanisms of the thick fine grinding mechanism 4 and the thin fine grinding mechanism 5 are connected through the drive coupling 6, requiring only one drive source. The thick fine grinding mechanism 4 and the thin fine grinding mechanism 5 rotate simultaneously. At the same time, the thin fine grinding mechanism 5 can move along the X and Y axes to the side of the thick fine grinding mechanism 4. Therefore, when the thick fine grinding mechanism 4 approaches the rotating outer circle of the valve body 21 for grinding, the thin fine grinding mechanism 5 can first move away from the side of the valve body 21 along the X axis to increase the distance between the thin fine grinding mechanism 5 and the valve body 21. Then, it moves along the Y axis to align the grinding mechanism of the thin fine grinding mechanism 5 with the adjacent thick annular groove 23 or thin annular groove 22 on the same vertical plane. Finally, the thin fine grinding mechanism 5 moves along the X axis to approach the inner wall of the rotating groove of the adjacent thick annular groove 23 or thin annular groove 22 and grinds it. This achieves a finer, slower movement of the thick fine grinding mechanism 4 along the outer circle of the valve body 21. During grinding, the thin-grinding mechanism 5 can perform slow, fine grinding on similar but different sets of thick annular grooves 23 or thin annular grooves 22, reducing the time loss caused by traditional fine grinding. It can also perform integrated grinding on the same set of petroleum machinery valve stems 2, improving parts processing efficiency. The rotating clamping member 211 moves to reduce the distance between itself and the rotating clamping member 121, clamping the petroleum machinery valve stem 2. When the rotating clamping member 211 and the rotating clamping member 121 rotate synchronously, they can drive the petroleum machinery valve stem 2 to rotate as a whole, adapting to subsequent fine grinding. The translation stage 32 can drive the sliding stage 34, the thick-grinding mechanism 4, the thin-grinding mechanism 5, and the drive coupling 6 to move towards the machine tool 1 via extension and retraction. The component 33 is configured such that the sliding table 34 can drive the thick grinding mechanism 4, the thin grinding mechanism 5, and the drive coupling 6 to move on the translation table 32. Therefore, the multi-axis movement function of the multi-axis moving table 3 allows the thin grinding mechanism 5 and the thick grinding mechanism 4 to move closer to the outside of the petroleum machinery valve stem 2. Driven by the fixed motor 43, the second grinding wheel 42 rotates. Under the coupling action of the drive coupling 6, the second grinding wheel 42 and the first grinding wheel 53 can achieve synchronous rotation through the same drive mechanism. When the second grinding wheel 42 rotates and contacts the rotating outer circle of the valve body 21 for grinding, the drive of the U-shaped block 51 allows the protective shell 52 to slide inside the two U-shaped blocks 51, first moving away from the outside of the valve body 21, and then, under the action of the extension of multiple pushing components 44,The U-shaped block 51 drives the protective shell 52 and the grinding wheel 53 to slide above the sliding table 34 until the grinding wheel 53 is on the same vertical plane as the adjacent thin annular groove 22 or thick annular groove 23. Then, the U-shaped block 51 drives the protective shell 52 to slide inside the two U-shaped blocks 51, and performs fine grinding on the inner wall surface of the adjacent thin annular groove 22 or thick annular groove 23. That is, the grinding wheel 53 and the grinding wheel 42 work together. The grinding wheel 53 is used to perform fine grinding on the inner wall surface of the thin annular groove 22 and thick annular groove 23, while the grinding wheel 42 is used to perform fine grinding on the outer circle of the valve body 21. This can achieve integrated grinding of the same set of petroleum machinery. The comprehensive grinding of valve stem 2 reduces processing steps and time consumption. The protective shell 52 drives the grinding wheel 53 to move along the X and Y axes. After grinding one set of thin annular grooves 22 or thick annular grooves 23, the next set can be ground. At this time, the sliding table 34 also drives the thin fine grinding mechanism 5, the drive coupling 6, and the thick fine grinding mechanism 4 to move, grinding different rotating outer circles of the valve body 21. The distance between the thin fine grinding mechanism 5 and the thick fine grinding mechanism 4 should not be too large; generally, they are positioned above the sliding table 34. Furthermore, grinding wheel 53 and grinding wheel 42 are always connected through the drive coupling 6 to achieve synchronous grinding, increasing the consistency of the grinding quality of the petroleum machinery valve stem 2.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A petroleum machinery parts processing device, comprising a machine tool (1) and a multi-axis moving table (3) mounted on the side of the machine tool (1), characterized in that: A thick fine grinding mechanism (4) and a thin fine grinding mechanism (5) with multiple axes are installed above the multi-axis moving stage (3). A drive coupling (6) is installed between the thick fine grinding mechanism (4) and the thin fine grinding mechanism (5). The grinding structure of the thin fine grinding mechanism (5) is linked with the grinding structure of the thick fine grinding mechanism (4) through the drive coupling (6). Both adopt the same drive mechanism. A component for spraying grinding liquid is installed above the thick fine grinding mechanism (4) and the thin fine grinding mechanism (5). The machining tool (1) includes a push table (11) that is slidably mounted on one end of the machining tool (1) and a clamping table (12) that is fixedly mounted on the other end of the machining tool (1). A valve body (21) is rotatably clamped between the push table (11) and the clamping table (12). A plurality of thick annular grooves (23) and thin annular grooves (22) are provided on the outer side of the valve body (21).

2. The petroleum machinery parts processing device according to claim 1, characterized in that: The clamping platform (12) is rotatably mounted with a rotating clamping component one (121) on the side facing the pushing platform (11), and the pushing platform (11) is mounted with a rotating clamping component two (111) on the side facing the clamping platform (12). The rotating clamping component one (121) and the rotating clamping component two (111) are respectively matched with the two ends of the valve body (21).

3. The petroleum machinery parts processing device according to claim 1, characterized in that: The multi-axis moving stage (3) includes a fixed stage (31) fixedly installed on the side of the machine tool (1) and a translation stage (32) slidably installed above the fixed stage (31). Multiple telescopic components (33) are installed on the upper side of the translation stage (32). A sliding stage (34) is installed at one end of the multiple telescopic components (33). The sliding stage (34) is slidably installed above the translation stage (32).

4. The petroleum machinery parts processing device according to claim 3, characterized in that: The thin grinding mechanism (5) includes a protective shell (52) and U-shaped blocks (51) installed on the upper and lower sides of the protective shell (52). A set of the U-shaped blocks (51) below the protective shell (52) is slidably installed above the sliding table (34).

5. The petroleum machinery parts processing device according to claim 4, characterized in that: The protective shell (52) is slidably installed between the two U-shaped blocks (51). Multiple drive motors (511) are installed on the side of the U-shaped blocks (51). The drive motors (511) drive the protective shell (52) to slide inside the two U-shaped blocks (51). A grinding wheel (53) is rotatably installed inside the protective shell (52).

6. The petroleum machinery parts processing device according to claim 5, characterized in that: The thick fine grinding mechanism (4) includes a second protective shell (41) fixedly installed on a sliding table (34) and a second grinding wheel (42) rotatably installed inside the second protective shell (41). A fixed motor (43) is fixedly installed on the side of the second protective shell (41). The fixed motor (43) is used to drive the second grinding wheel (42) to rotate. The second grinding wheel (42) is linked to the first grinding wheel (53) through a drive coupling (6).

7. The petroleum machinery parts processing device according to claim 6, characterized in that: The second protective shell (41) is equipped with a plurality of pushing members (44) on the sides facing the two U-shaped blocks (51), and one end of the plurality of pushing members (44) is connected to the side of the corresponding U-shaped block (51).

8. The petroleum machinery parts processing device according to claim 7, characterized in that: The pushing component (44) extends to drive the thin grinding mechanism (5) to slide above the sliding table (34), increasing the distance between the thick grinding mechanism (4) and the thin grinding mechanism (5).

9. A petroleum machinery parts processing device according to claim 6, characterized in that: The thickness of the second grinding wheel (42) is greater than the thickness of the first grinding wheel (53), and the thickness of the first grinding wheel (53) is less than the thickness of the thin annular groove (22).

10. A petroleum machinery parts processing device according to claim 6, characterized in that: The drive coupling (6) includes a Schmidt coupling (61) and a telescopic rod (62) installed at the end of the Schmidt coupling (61). The end of the telescopic rod (62) passes through a protective shell (52) and is connected to a grinding wheel (53). The other end of the Schmidt coupling (61) passes through a protective shell (41) and is connected to a grinding wheel (42).

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