A high-precision polishing device based on valve machining

Abstract

The application belongs to the technical field of valve processing, and particularly relates to a high-precision polishing equipment based on valve processing, which comprises an operation table, integrated polishing mechanisms, mold clamping mechanisms and detection mechanisms are respectively arranged on the operation table, the integrated polishing mechanisms are arranged in the middle of the operation table, the mold clamping mechanisms and the detection mechanisms are respectively arranged on the two sides of the integrated polishing mechanisms, and a liquid storage mechanism is arranged on one side of the operation table. The high-precision polishing equipment based on valve processing can realize in-situ online detection, real-time monitoring and adjustment of polishing pressure, closely combines polishing and detection processes, integrates polishing processes of a ball valve core and a valve seat, detects the surface state of a workpiece in time after polishing, directly detects the sealing property of the workpiece after polishing, avoids errors caused by secondary clamping, and improves production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of valve processing technology, specifically referring to a high-precision polishing device based on valve processing. Background Technology

[0002] Ball valves, as core opening, closing, and regulating components of fluid control systems, are widely used in many fields such as petrochemicals, power, and municipal water supply. The machining accuracy of the ball core and valve seat sealing surfaces directly determines the valve's sealing performance, pressure resistance rating, and service life. High-precision polishing is a key process in the machining of ball valve sealing components, which can effectively eliminate residual tool marks from turning, correct microscopic surface defects, and ensure long-term leak-free and stable operation of the valve. Traditional valve polishing equipment still has many technical shortcomings and is difficult to adapt to the batch precision machining requirements of high-precision ball valves. Existing polishing equipment, which uses molds for polishing, struggles to control polishing pressure in real time, easily leading to uneven local pressure. This can cause defects such as over-polishing and edge collapse on the sealing surface, and under-polishing leaving tool marks, severely affecting valve sealing accuracy. Furthermore, existing polishing equipment generally employs an offline inspection mode of "processing first, then disassembling and inspecting." Even for checking the fit between the ball valve core and seat, the workpiece must be removed for individual inspection. The polishing process and precision inspection are independent, making it impossible to monitor quality throughout the process. Defective workpieces require re-clamping and rework, resulting in repeated positioning errors, significantly reducing machining accuracy and production efficiency, and leading to poor consistency in the quality of workpieces within the same batch and a high scrap rate. Summary of the Invention

[0003] To address the aforementioned challenges, this invention provides a high-precision polishing device based on valve processing, capable of in-situ online inspection and real-time monitoring and adjustment of polishing pressure. It tightly integrates polishing and inspection processes, simultaneously combining the polishing processes of the ball valve core and seat. After polishing, the surface condition of the workpiece is promptly inspected, and the workpiece can be directly tested for sealing against standard parts after polishing, avoiding errors caused by secondary clamping and improving production efficiency.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high-precision polishing device based on valve processing, including an operating table, a main controller on the operating table, an integrated polishing mechanism, a mold clamping mechanism and a detection mechanism respectively on the operating table, the integrated polishing mechanism being located in the middle of the operating table, the mold clamping mechanism and the detection mechanism being located on both sides of the integrated polishing mechanism respectively, and a liquid storage mechanism being provided on one side of the operating table.

[0005] Furthermore, the integrated polishing mechanism includes a positioning frame, a valve seat clamping assembly, and a valve core clamping assembly. The positioning frame is mounted on the operating table and is arranged in an inverted U-shape. The upper crossbeam of the positioning frame adopts an electric telescopic block. One side vertical plate of the positioning frame slides on the operating table through an electric telescopic connection structure. The valve seat clamping assembly is located on the upper wall inside the positioning frame. The valve core clamping assembly is horizontally mounted on one side vertical plate of the positioning frame and is located below the valve seat clamping assembly.

[0006] Furthermore, the mold clamping mechanism includes an electric lifting column, a second electric telescopic rod, and a flipping plate. The electric lifting column is vertically mounted on the operating table, the second electric telescopic rod is horizontally mounted at the output end of the electric lifting column, the telescopic end of the second electric telescopic rod faces the positioning frame, the output end of the second electric telescopic rod is equipped with a flipping motor, and the flipping plate is located at the output end of the flipping motor.

[0007] Furthermore, the detection mechanism includes a third electric telescopic rod and a detection probe. The third electric telescopic rod is horizontally positioned above the operating table, with its telescopic end opposite to that of the second electric telescopic rod. The detection probe is movably positioned at the end of the third electric telescopic rod.

[0008] Furthermore, a positioning block is provided through the center of the flipping plate, and induction motors are evenly distributed around the circumference of the side of the flipping plate away from the positioning block. The telescopic ends of the induction motors penetrate the flipping plate, and pressure sensing pads are provided at the output ends of the induction motors. The pressure sensing pads are evenly distributed around the outside of the positioning block, and a through hole is provided through the center of the positioning block. When the second electric telescopic rod is fully extended, the flipping plate is located between the valve seat clamping assembly and the valve core clamping assembly. The four sets of pressure sensing pads can detect and adjust the clamping pressure at four points during mold assembly to ensure balanced force on the mold. Polishing pressure is collected in real time during the polishing process, and the polishing pressure is adjusted in real time in combination with a preset threshold to avoid sudden changes in pressure during the polishing process, effectively reducing defects such as over-polishing, under-polishing, and edge collapse of the workpiece, and improving the polishing accuracy and batch processing consistency of the ball valve workpiece.

[0009] Preferably, a valve core mold is bolted onto the flip plate, and a valve seat mold is suspended on the positioning frame. The valve seat mold can be bolted onto the flip plate. The centers of the valve core mold and the valve seat mold are respectively engaged with the positioning block. The centers of the valve core mold and the valve seat mold are respectively provided with through holes, which are connected to the through holes. This device can selectively polish the sealing surfaces of the ball valve core or the valve seat without the need for two separate polishing equipment. The corresponding adjustment can be completed by inputting the workpiece size parameters through the main controller. It can adapt to the processing of ball valve workpieces of various specifications, reduce equipment investment costs, and reduce the equipment footprint.

[0010] Furthermore, the valve seat clamping assembly includes a first electric telescopic rod and an inner three-jaw clamping disc. The first electric telescopic rod is vertically mounted on the upper wall inside the positioning frame. A polishing motor is provided at the output end of the first electric telescopic rod. The inner three-jaw clamping disc is located at the output end of the polishing motor. A nozzle is provided at the center of the inner three-jaw clamping disc. A liquid passage pipe is connected through the side wall of the inner three-jaw clamping disc and is connected to the nozzle.

[0011] Furthermore, the valve core clamping assembly includes a rotating motor, a plug-in rotating rod, an internal expansion and fixing component, a hydraulic telescopic column, and a fixed plug rod. The rotating motor is located inside the positioning frame, and the plug-in rotating rod is located at the output end of the rotating motor. The central axis of the plug-in rotating rod is perpendicular to the central axis of the first electric telescopic rod and is in the same vertical plane. The internal expansion and fixing component is located inside the plug-in rotating rod. The hydraulic telescopic column and the fixed plug rod are respectively horizontally arranged on one side of the sliding vertical plate of the positioning frame. The fixed plug rod is located inside the hydraulic telescopic column. The hydraulic telescopic column has a hollow structure. When the positioning frame retracts and the sliding side vertical plate approaches the fixed side vertical plate, the fixed plug rod engages and inserts into the center of the plug-in rotating rod. An air pump is provided on the telescopic end of the hydraulic telescopic column. The telescopic end of the hydraulic telescopic column is an annular disc with air holes evenly distributed around its circumference. The evenly distributed air holes are interconnected and connected to the output end of the air pump.

[0012] Furthermore, the internal expansion and tightening fixing component includes a motor, a double-acting lead screw, a cross slider, and expansion plates. The motor is embedded in the plug-in rotating rod. The double-acting lead screw is located at the output end of the motor and has threads in both directions. The cross sliders are symmetrically engaged at both ends of the double-acting lead screw and slide within the plug-in rotating rod. The expansion plates are evenly distributed around the outer side of the cross sliders, and each expansion plate is rotatably connected to one of the two cross sliders. Rubber pads are provided on the outer side of the expansion plates to protect the valve core's inner hole and increase friction. When the double-acting lead screw rotates, the two cross sliders... The cross-shaped sliders move closer or further apart, and under the action of the connecting plate, the circumferentially distributed expansion plates expand outward or retract inward towards the plug-in rotating rod. When the second electric telescopic rod is fully extended, the center of the inner hole three-jaw clamping disc is on the same straight line as the center of the positioning block, and is on the same plane as the center section of the expansion plate. Fixing is achieved by the rubber pad on the expansion plate adhering to the inner hole of the valve core, and the clamping force is uniform. This ensures that sufficient torque is transmitted during rotary polishing and protects the inner hole of the valve core from being damaged. The valve seat is fixed by the three-jaw clamping disc, which ensures high coaxiality of the workpiece and reduces the form and position errors caused by clamping.

[0013] Furthermore, an adjustment motor is provided on one side of the output end of the third electric telescopic rod, and an adjustment tooth is provided at the output end of the adjustment motor. The central axis of the adjustment tooth is perpendicular to the central axis of the third electric telescopic rod. The adjustment tooth meshes with a follower tooth, which is rotatably connected to the end of the third electric telescopic rod. A fine-tuning telescopic rod is fixedly connected to the follower tooth. The detection probe is located at the output end of the fine-tuning telescopic rod. The end of the detection probe is a telescopic structure, and a spring and a displacement sensor are provided inside. The detection probe is connected to a roughness tester through a cable. Preferably, when the third electric telescopic rod is fully extended, the detection probe is directly above the internal expansion fixing member.

[0014] Furthermore, the liquid storage mechanism includes a liquid storage tank, a central through rod, a tank cover, and a conversion through rod. The liquid storage tank is located on the side of the operating table near the mold clamping mechanism. The central through rod is located at the center of the liquid storage tank. Three partitions are evenly distributed around the outer circumference of the central through rod. The partitions are connected to the inner wall of the liquid storage tank, dividing the interior of the liquid storage tank into three areas, which respectively hold polishing liquid, rinsing liquid, and testing liquid. Liquid passage grooves are evenly distributed around the bottom circumference of the central through rod, and the liquid passage grooves are located between the partitions.

[0015] Preferably, the bucket lid is installed on the liquid storage tank, the switching rod is rotatably located at the center of the bucket lid, the switching rod is rotatably inserted into the central rod, the lower end of the switching rod is provided with a liquid inlet, when the switching rod rotates in the central rod, the liquid inlet is connected to the liquid channel, the upper end of the switching rod is fitted with a switching tooth, the bucket lid is respectively provided with a liquid pump and a drive motor, the output end of the drive motor is provided with a drive tooth, the drive tooth meshes with the switching tooth, the liquid pump is connected to the switching rod, and the output end of the liquid pump is connected to the liquid pipe; Furthermore, a waste liquid tank is provided on the operating platform. The waste liquid tank is located directly below the internal expansion and fixing component. A first valve and a second pump are respectively provided in the waste liquid tank. The first valve is connected to a drain pipe, and the second pump is connected to a storage tank and is provided with a recovery pipe.

[0016] By switching the fluid inlet with the switching rod, the polishing fluid, rinsing fluid, and testing fluid can be automatically switched and supplied independently; the processing waste fluid is uniformly collected into the waste fluid tank for external recycling and treatment, and the testing fluid can be pumped for recycling and reuse; the polishing process is equipped with air blowing holes to dissipate heat from the polishing friction in time, avoid workpiece deformation due to heat, and ensure the machining accuracy of the sealing surface.

[0017] Preferably, the main controller is a PLC controller, and the electric telescopic block of the positioning frame, the first electric telescopic rod, the polishing motor, the nozzle, the rotating motor, the air pump, the motor, the electric lifting column, the second electric telescopic rod, the flipping motor, the induction motor, the pressure sensing pad, the third electric telescopic rod, the adjusting motor, the fine-tuning telescopic rod, the detection probe, the drive motor, the liquid pump, the first valve and the second pump are respectively electrically connected to the main controller.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The present invention provides a high-precision polishing equipment based on valve processing, which closely integrates polishing and inspection processes. After the workpiece is polished, it does not need to be disassembled. The equipment automatically completes rinsing and chip removal, centrifugal drying, and online roughness probe detection in sequence. It can also use standard parts to complete the sealing verification, eliminating the workpiece disassembly and transfer and offline inspection processes, and greatly reducing the secondary clamping and positioning error. Defective workpieces can be directly repaired at the workstation, which greatly shortens the processing flow and improves production efficiency.

[0019] 2. This device adopts an integrated design with a compact overall structure. It can selectively polish the sealing surfaces of ball valve cores or seats without the need for two separate polishing equipment. The corresponding adjustment can be completed by inputting the workpiece size parameters through the main controller. It can adapt to the processing of ball valve workpieces of various specifications, reduce equipment investment costs, and reduce the equipment footprint.

[0020] 3. A flexible dynamic monitoring module is adopted, with four sets of pressure sensing pads. During mold assembly, the clamping pressure at four points can be detected and adjusted to ensure balanced force on the mold. During the polishing process, the polishing pressure is collected in real time and adjusted in real time with the preset threshold to avoid the pressure fluctuating during the polishing process. This effectively reduces defects such as over-polishing, under-polishing, and edge collapse of the workpiece, and improves the polishing accuracy and batch processing consistency of the ball valve workpiece.

[0021] 4. This device has a high degree of automation. From workpiece clamping and positioning, mold clamping, polishing, post-processing to quality inspection, each action is performed by the main controller in coordination with each motor and telescopic rod, reducing manual intervention; reducing the impact of operator experience on finished product quality, and facilitating standardized mass production of ball valve sealing pairs. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a high-precision polishing device based on valve processing provided by the present invention; Figure 2 This is a schematic diagram of the integrated polishing mechanism; Figure 3 A schematic diagram of the combined structure of the hydraulic telescopic column, the fixed insertion rod, and the positioning frame; Figure 4 This is a structural schematic diagram of the internal expansion and tightening fixing component; Figure 5 This is a schematic diagram of the mold clamping mechanism; Figure 6 This is a schematic diagram of the flip-up plate structure; Figure 7 This is a schematic diagram of the testing organization's structure; Figure 8 A schematic diagram of the combined structure of the operating table and the liquid storage tank; Figure 9 A schematic diagram of the combined structure of the bucket lid and the conversion rod; Figure 10 A cross-sectional structural diagram of the combination of the bucket lid and the conversion rod; Figure 11 This is a schematic diagram of the valve core mold structure; Figure 12 This is a schematic diagram of the valve seat mold.

[0023] The components include: 1. Operating table; 2. Integrated polishing mechanism; 3. Detection mechanism; 4. Mold clamping mechanism; 5. Liquid storage mechanism; 6. Positioning frame; 7. Valve seat clamping assembly; 8. Valve core clamping assembly; 9. Valve core mold; 10. Valve seat mold; 11. First electric telescopic rod; 12. Inner hole three-jaw clamping plate; 13. Liquid passage pipe; 14. Nozzle; 15. Rotary motor; 16. Insertion rotating rod; 17. Internal expansion and fixing component; 18. Hydraulic telescopic column; 19. Fixed insertion rod; 20. Air blowing hole; 21. Air pump; 22. Two-way lead screw; 23. Motor; 24. Cross slider; 25. Connecting plate; 26. Expansion plate; 27. Electric lifting column. 28. Second electric telescopic rod; 29. ​​Tilting motor; 30. Tilting plate; 31. Induction motor; 32. Through hole; 33. Positioning block; 34. Pressure sensing pad; 35. Third electric telescopic rod; 36. Adjusting motor; 37. Adjusting gear; 38. Follow-up gear; 39. Fine-tuning telescopic rod; 40. Detection probe; 41. Waste liquid tank; 42. Storage tank; 43. Tank lid; 44. Central through rod; 45. Partition; 46. Liquid passage; 47. Conversion through rod; 48. Liquid passage port; 49. Liquid pump; 50. Drive motor; 51. Conversion gear; 52. Drive gear; 53. First valve; 54. Second pump; 55. Recovery pipe. Detailed Implementation

[0024] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. The parts of the technical features or connection relationships described in the present invention that are not described in detail are all existing technologies.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] like Figures 1-12As shown, the present invention provides a high-precision polishing device based on valve processing, including an operating table 1, a main controller on the operating table 1, an integrated polishing mechanism 2, a mold clamping mechanism 4 and a detection mechanism 3 respectively on the operating table 1, the integrated polishing mechanism 2 is located in the middle of the operating table 1, the mold clamping mechanism 4 and the detection mechanism 3 are respectively located on both sides of the integrated polishing mechanism 2, and a liquid storage mechanism 5 is provided on one side of the operating table 1.

[0027] The integrated polishing mechanism 2 includes a positioning frame 6, which is mounted on the operating table 1. The positioning frame 6 is arranged in an inverted U-shape. The upper crossbeam of the positioning frame 6 adopts an electric telescopic block. One side vertical plate of the positioning frame 6 slides on the operating table 1 through an electric telescopic connection structure. The upper inner wall of the positioning frame 6 is provided with a valve seat clamping assembly 7. A valve core clamping assembly 8 is horizontally provided on the fixed side vertical plate of the positioning frame 6. The valve core clamping assembly 8 is located below the valve seat clamping assembly 7. The valve seat clamping assembly 7 includes a first electric telescopic rod 11 and an inner three-jaw clamping disc 12. The first electric telescopic rod 11 is vertically mounted on the upper wall inside the positioning frame 6. A polishing motor is provided at the output end of the first electric telescopic rod 11. The inner three-jaw clamping disc 12 is located at the output end of the polishing motor. A nozzle 14 is provided at the center of the inner three-jaw clamping disc 12. A liquid passage pipe 13 is connected through the side wall of the inner three-jaw clamping disc 12 and is connected to the nozzle 14.

[0028] The valve core clamping assembly 8 includes a rotating motor 15, a hydraulic telescopic column 18, and a fixed insert rod 19. The rotating motor 15 is located inside the positioning frame 6. The output end of the rotating motor 15 is provided with a plug-in rotating rod 16. The central axis of the plug-in rotating rod 16 is perpendicular to the central axis of the first electric telescopic rod 11 and is in the same vertical plane. The plug-in rotating rod 16 is provided with an internal expansion and tightening fixing component 17. The hydraulic telescopic column 18 and the fixed insert rod 19 are respectively horizontally arranged on the sliding side vertical plate of the positioning frame 6. The fixed insert rod 19 is located inside the hydraulic telescopic column 18. The hydraulic telescopic column 18 has a hollow structure. When the positioning frame 6 retracts and the sliding side vertical plate approaches the fixed side vertical plate, the fixed insert rod 19 engages and inserts into the center of the plug-in rotating rod 16. The telescopic end of the hydraulic telescopic column 18 is provided with an air pump 21. The telescopic end of the hydraulic telescopic column 18 is an annular disc with air blowing holes 20 evenly distributed around its circumference. The evenly distributed air blowing holes 20 are connected and connected to the output end of the air pump 21.

[0029] The internal expansion and tightening fixing component 17 includes a motor 23, which is embedded in the plug-in rotating rod 16. The output end of the motor 23 is provided with a bidirectional lead screw 22, which has forward and reverse threads. The two ends of the bidirectional lead screw 22 are symmetrically engaged with cross sliders 24, which slide within the plug-in rotating rod 16. Expansion plates 26 are evenly distributed around the outer circumference of the cross sliders 24. Connecting plates 25 are rotatably connected between the evenly distributed expansion plates 26 and the two cross sliders 24. Rubber pads are provided on the outer side of the expansion plates 26 to protect the inner hole of the valve core and increase friction. When the bidirectional lead screw 22 rotates, the two symmetrical cross sliders 24 move closer or further away from each other. Then, driven by the connecting plates 25, the evenly distributed expansion plates 26 expand outward or retract inward towards the plug-in rotating rod 16.

[0030] The mold clamping mechanism 4 includes an electric lifting column 27, which is vertically mounted on the operating table 1. A second electric telescopic rod 28 is horizontally mounted at the output end of the electric lifting column 27, with its telescopic end facing the positioning frame 6. A flipping motor 29 is mounted at the output end of the second electric telescopic rod 28, and a flipping plate 30 is mounted at the output end of the flipping motor 29. A positioning block 33 is disposed through the center of the flipping plate 30, and induction motors 31 are evenly distributed around the circumference of the side of the flipping plate 30 away from the positioning block 33. The telescopic end passes through the flip plate 30, and the output end of the induction motor 31 is provided with a pressure sensing pad 34. The pressure sensing pad 34 is evenly distributed around the outside of the positioning block 33, and the center of the positioning block 33 is provided with a through hole 32. When the second electric telescopic rod 28 is fully extended, the flip plate 30 is located between the valve seat clamping assembly 7 and the valve core clamping assembly 8. When the second electric telescopic rod 28 is fully extended, the center of the inner hole three-jaw clamping disc 12 is on the same straight line as the center of the positioning block 33, and is on the same plane as the center section of the tensioning plate 26. A valve core mold 9 is bolted onto the flip plate 30, and a valve seat mold 10 is suspended on the positioning frame 6. The valve seat mold 10 can also be bolted onto the flip plate 30. The centers of the valve core mold 9 and the valve seat mold 10 are respectively engaged with the positioning block 33. The centers of the valve core mold 9 and the valve seat mold 10 are respectively provided with through holes, which are connected to the through hole 32. During installation, the bottoms of the valve core mold 9 and the valve seat mold 10 are pressed on the pressure sensing pad 34.

[0031] The testing mechanism 3 includes a third electric telescopic rod 35, which is horizontally positioned above the operating table 1. The telescopic end of the third electric telescopic rod 35 is opposite to the telescopic end of the second electric telescopic rod 28. An adjusting motor 36 is provided on one side of the output end of the third electric telescopic rod 35. An adjusting tooth 37 is provided at the output end of the adjusting motor 36. The central axis of the adjusting tooth 37 is perpendicular to the central axis of the third electric telescopic rod 35. The adjusting tooth 37 engages with a follower tooth 38, which is rotatably connected to the end of the third electric telescopic rod 35. A fine-tuning telescopic rod 39 is fixedly connected to the follower tooth 38. A testing probe 40 is provided at the output end of the fine-tuning telescopic rod 39. The end of the testing probe 40 is a telescopic structure, and it contains a spring and a displacement sensor. The testing probe 40 is connected to a roughness tester via a cable. When the third electric telescopic rod 35 is fully extended, the testing probe 40 is directly above the internal expansion fixing member 17.

[0032] The liquid storage mechanism 5 includes a liquid storage tank 42 and a lid 43. The liquid storage tank 42 is located on the side of the operating table 1 near the mold clamping mechanism 4. A central through rod 44 is provided at the center of the liquid storage tank 42. Three partitions 45 are evenly distributed around the outer circumference of the central through rod 44. The partitions 45 are connected to the inner wall of the liquid storage tank 42, dividing the interior of the liquid storage tank 42 into three areas, which respectively hold polishing liquid, rinsing liquid, and testing liquid. Liquid channels 46 are evenly distributed around the bottom circumference of the central through rod 44, and the liquid channels 46 are located between the partitions 45. The lid 43 is installed on the liquid storage tank 42. A conversion rod 47 is rotatably inserted into a central rod 44. A liquid inlet 48 is provided at the lower end of the conversion rod 47. When the conversion rod 47 rotates within the central rod 44, the liquid inlet 48 is connected to the liquid inlet 46. A conversion tooth 51 is sleeved on the upper end of the conversion rod 47. A liquid pump 49 and a drive motor 50 are respectively provided on the lid 43. A drive tooth 52 is provided at the output end of the drive motor 50. The drive tooth 52 meshes with the conversion tooth 51. The liquid pump 49 is connected to the conversion rod 47. The output end of the liquid pump 49 is connected to the liquid inlet pipe 13.

[0033] The operating table 1 is provided with a waste liquid tank 41, which is located directly below the internal expansion and fixing component 17. The waste liquid tank 41 is provided with a first valve 53 and a second pump 54. The first valve 53 is connected to a drain pipe, and the second pump 54 is connected to a storage tank 42 with a recovery pipe 55. The part of the storage tank 42 connected to the recovery pipe 55 holds the test liquid.

[0034] The main controller adopts a PLC controller. The electric telescopic block of the positioning frame 6, the first electric telescopic rod 11, the polishing motor, the nozzle 14, the rotary motor 15, the air pump 21, the motor 23, the electric lifting column 27, the second electric telescopic rod 28, the flipping motor 29, the induction motor 31, the pressure sensing pad 34, the third electric telescopic rod 35, the adjusting motor 36, the fine-tuning telescopic rod 39, the detection probe 40, the drive motor 50, the liquid pump 49, the first valve 53 and the second pump 54 are electrically connected to the main controller.

[0035] Working principle and workflow: In practical use, this device can polish the sealing surface of the ball valve core or valve seat. The valve core mold 9 and the valve seat mold 10 are not used at the same time. The valve core mold 9 or the valve seat mold 10 is selected according to the size of the workpiece to be polished. Example 1: When polishing the valve core, input the radius of the valve core to be polished to the main controller. The main controller drives the hydraulic telescopic column 18 to extend a certain distance according to the size of the valve core radius. Install the valve core mold 9 on the flip plate 30 with bolts. The valve core mold 9 engages with the positioning block 33. The base of the valve core mold 9 presses on the four pressure sensing pads 34. Tighten the four bolts with a fixed torque. Then observe the pressure value detected by the pressure sensing pads 34. If the pressure values ​​at the four points are significantly different, adjust the pressure of the pressure sensing pads 34 through the induction motor 31 until the pressure values ​​at the four points are basically close. Install and fix the valve seat standard part on the inner hole three-jaw clamping plate 12. The valve seat standard part is directly facing the inward expansion and fixing component 17.

[0036] Then, the valve core to be polished is placed on the plug-in rotating rod 16, the main controller is started, the electric telescopic block on the upper part of the positioning frame 6 retracts, and the valve core to be polished is moved to the inner expansion and fixing component 17 under the push of the end face of the hydraulic telescopic column 18. When the electric telescopic block is fully retracted, the fixing plug rod 19 is inserted into the plug-in rotating rod 16, and the ball core of the valve core and the central axis of the valve seat standard part are on the same straight line. At this time, the motor 23 starts immediately, the bidirectional lead screw 22 rotates, and the cross sliders 24 at both ends of it move closer to each other. Then, under the push of the connecting plate 25, the circumferentially distributed expansion plate 26 is pushed outward. The rubber pad on the expansion plate 26 is pressed tightly against the inner hole of the valve core, fixing the valve core, protecting the inner hole of the valve core and increasing the friction force, while the hydraulic telescopic column 18 is reset and no longer in contact with the valve core. The flipping motor 29 starts, causing the flipping plate 30 to rotate the valve core mold 9 downwards. The second electric telescopic rod 28 is fully extended, and then the electric lifting column 27 retracts, causing the valve core mold 9 to move down and press onto the valve core to be polished. At this time, the liquid inlet 48 is connected to the liquid channel 46 containing the polishing liquid. The liquid pump 49 works, and the polishing liquid is drawn into the liquid pipe 13 and sprayed out through the nozzle 14. The polishing liquid flows through the inside of the valve seat standard part and through the through hole 32 and the through hole on the valve core mold 9 to the surface of the valve core to be polished. Then the rotating motor 15 starts, and the plug-in rotating rod 16 drives the valve core to rotate, polishing the outer surface of the valve core. During the polishing process, the pressure sensor 34 monitors the changes in the polishing pressure on the valve core mold 9 in real time and adjusts the pressure on the valve core mold 9 in real time according to the preset pressure threshold to ensure polishing accuracy. At the same time, the air pump 21 works, and the air blowing hole 20 blows air into the valve core during polishing to increase its surface heat dissipation.

[0037] After polishing is completed, the electric lifting column 27 extends, causing the valve core mold 9 to move upward and away from the valve core. The drive motor 50 starts immediately, driving the gear 52 to rotate, causing the corresponding conversion gear 51 to rotate, which in turn causes the conversion rod 47 to rotate. The liquid inlet 48 connects to the liquid tank 46 containing the rinsing liquid. The rinsing liquid passes through the nozzle 14 and the through hole 32 to rinse the valve core, removing residual polishing liquid and metal debris. The polishing liquid and rinsing liquid flow into the waste liquid tank 41. The first valve 53 opens, and the polishing liquid and rinsing liquid are discharged to the external recycling equipment through the drain pipe. Then, the pump 49 stops working, the second electric telescopic rod 28 retracts, the flip plate 30 resets, and the rotating motor 15 continues to rotate, causing the rinsing liquid on the surface of the valve core to be thrown off. Simultaneously, the air blowing hole 20 blows air to accelerate the drying of the valve core surface.

[0038] After the valve core surface is dry, the rotary motor 15 stops working, the third electric telescopic rod 35 extends, and the detection probe 40 extends to directly above the polished valve core. The motor 36 is adjusted so that the tip of the detection probe 40 points downwards. The fine-tuning telescopic rod 39 is activated, causing the detection probe 40 to contact the valve core. The rotation speed of the rotary motor 15 is adjusted to drive the valve core to rotate at a low speed, thereby detecting the roughness of the valve core polish through the detection probe 40. After the test is passed, the fine-tuning telescopic rod 39, the adjusting motor 36, and the third electric telescopic rod 35 are reset. The rotary motor 15 stops working, and the first electric telescopic rod 11 extends, causing the valve seat standard part to move down and press against the polished valve core. At this point, the drive motor 50 starts working again, causing the liquid inlet 48 to rotate to the liquid inlet 46 containing the test liquid. The pump 49 draws out the test liquid and sprays it through the nozzle 14 onto the inside of the valve seat standard part. At this time, the rotating motor 15 starts, driving the valve core to rotate at a low speed. Observe whether the test liquid flows out from between the valve core and the valve seat standard part. If it flows out, it means that the sealing is not qualified and the valve core needs to be repaired. Otherwise, it means that the valve core is qualified. Finally, the first electric telescopic rod 11 is reset, the second pump 54 works, and the test liquid is drawn back into the storage tank 42 for recovery. The internal expansion and fixing component 17 is reset. After removing the valve core, the next valve core can be polished with high precision.

[0039] Example 2: When polishing the valve seat sealing surface, input the radius of the valve core standard part to the main controller; based on the steps of Example 1, install the valve seat mold 10 on the flip plate 30 with bolts, tighten the four bolts with a fixed torque and adjust the pressure values ​​of the four pressure sensing pads 34 to be basically close; install and fix the valve seat to be polished on the inner hole three-jaw clamping plate 12, with the valve seat facing the inner expansion and fixing component 17, then put the valve core standard part on the plug-in rotating rod 16, and push the valve core standard part to the inner expansion and fixing component 17 through the hydraulic telescopic column 18 and internally expand and fix it, the hydraulic telescopic column 18 resets and no longer contacts the valve core standard part.

[0040] The flipping motor 29 starts, causing the flipping plate 30 to rotate the valve seat mold 10 upwards. The second electric telescopic rod 28 is fully extended, and then the electric lifting column 27 extends, causing the valve seat mold 10 to move upwards and press onto the valve seat to be polished. The polishing liquid is sprayed out through the nozzle 14 and flows to the sealing surface of the valve seat to be polished. Excess polishing liquid flows into the waste liquid tank 41 through the through hole and the through hole 32 on the valve seat mold 10. Then the polishing motor starts to polish the sealing surface of the valve seat. During the polishing process, the pressure sensor 34 monitors the changes in polishing pressure on the valve seat mold 10 in real time and adjusts the pressure on the valve seat mold 10 in real time according to the preset pressure threshold to ensure polishing accuracy.

[0041] After polishing is complete, the electric lifting column 27 retracts, causing the valve seat mold 10 to move down away from the valve seat. The drive motor 50 immediately starts, and the liquid inlet 48 connects to the liquid channel 46 containing the rinsing liquid. The rinsing liquid is sprayed out through the nozzle 14 to rinse the valve seat and valve seat mold 10, removing residual polishing liquid and metal debris. Then, the liquid pump 49 stops working, the second electric telescopic rod 28 and the tilting plate 30 reset, and the polishing motor continues to rotate, causing the rinsing liquid on the valve seat to be quickly flung off. After the surface is dry, the polishing motor stops working, the third electric telescopic rod 35 extends, allowing the detection probe 40 to extend directly below the polished valve seat. The first electric telescopic rod 11 adjusts the distance between the valve seat and the detection probe 40. The motor 36 is adjusted to tilt the tip of the detection probe 40 upwards, the fine-tuning telescopic rod 39 is activated, and the detection probe 40 contacts the valve core sealing surface. The polishing motor speed is adjusted to drive the valve seat to rotate at low speed, and the roughness of the valve seat polishing is detected by the detection probe 40. After the test is qualified, the fine-tuning telescopic rod 39, the adjusting motor 36, and the third electric telescopic rod 35 are reset, the polishing motor stops working, and the first electric telescopic rod 11 extends, causing the polished valve seat to move down and press onto the valve core standard part. The sealing performance between the valve seat and the valve core standard part is tested by the detection fluid. After the test is qualified, the first electric telescopic rod 11 is reset, the internal expansion fixing component 17 is reset, the valve seat is removed, and the high-precision polishing of the next valve seat can be performed.

[0042] It is worth noting that the use of the internal three-jaw chuck 12, the detection probe 40, and the roughness detector are all existing technologies, and will not be elaborated here.

[0043] The above is the overall workflow of this invention. Simply repeat this process the next time you use it.

[0044] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-precision polishing device based on valve processing, comprising an operating table (1), characterized in that: The operating table (1) is provided with an integrated polishing mechanism (2), a mold clamping mechanism (4) and a detection mechanism (3). The integrated polishing mechanism (2) is located in the middle of the operating table (1). The mold clamping mechanism (4) and the detection mechanism (3) are located on both sides of the integrated polishing mechanism (2). A liquid storage mechanism (5) is provided on one side of the operating table (1). The integrated polishing mechanism (2) includes a positioning frame (6), a valve seat clamping assembly (7), and a valve core clamping assembly (8). The positioning frame (6) is mounted on the operating table (1) and is arranged in an inverted U-shape. One side vertical plate of the positioning frame (6) slides on the operating table (1) via an electric telescopic connection structure. The valve seat clamping assembly (7) is located on the upper wall inside the positioning frame (6). The valve core clamping assembly (8) is horizontally mounted on one side vertical plate fixed to the positioning frame (6) and is located below the valve seat clamping assembly (7). The mold clamping mechanism (4) includes an electric lifting column (27), a second electric telescopic rod (28), and a flipping plate (30). The electric lifting column (27) is vertically mounted on the operating table (1), the second electric telescopic rod (28) is horizontally mounted at the output end of the electric lifting column (27), and the output end of the second electric telescopic rod (28) is equipped with a flipping motor (29). The flipping plate (30) is located at the output end of the flipping motor (29). The detection mechanism (3) includes a third electric telescopic rod (35) and a detection probe (40). The third electric telescopic rod (35) is horizontally positioned above the operating table (1). The telescopic end of the third electric telescopic rod (35) is positioned opposite to the telescopic end of the second electric telescopic rod (28). The detection probe (40) is movably positioned at the end of the third electric telescopic rod (35).

2. The high-precision polishing equipment based on valve processing according to claim 1, characterized in that: The center of the flip plate (30) is provided with a positioning block (33). On the side of the flip plate (30) away from the positioning block (33), there are induction motors (31) evenly distributed around the circumference. The telescopic end of the induction motor (31) passes through the flip plate (30). The output end of the induction motor (31) is provided with a pressure sensing pad (34). The pressure sensing pad (34) is evenly distributed around the outside of the positioning block (33). The center of the positioning block (33) is provided with a through hole (32).

3. The high-precision polishing equipment based on valve processing according to claim 2, characterized in that: The valve seat clamping assembly (7) includes a first electric telescopic rod (11) and an inner hole three-jaw clamping disc (12). The first electric telescopic rod (11) is vertically mounted on the upper wall inside the positioning frame (6). The output end of the first electric telescopic rod (11) is equipped with a polishing motor. The inner hole three-jaw clamping disc (12) is located at the output end of the polishing motor. The center of the inner hole three-jaw clamping disc (12) is equipped with a nozzle (14). A liquid passage pipe (13) is connected through the side wall of the inner hole three-jaw clamping disc (12). The liquid passage pipe (13) is connected to the nozzle (14).

4. A high-precision polishing device based on valve processing according to claim 3, characterized in that: The valve core clamping assembly (8) includes a rotating motor (15), a plug-in rotating rod (16), an internal expansion fixing component (17), a hydraulic telescopic column (18), and a fixed plug rod (19). The rotating motor (15) is located inside the positioning frame (6), and the plug-in rotating rod (16) is located at the output end of the rotating motor (15). The central axis of the plug-in rotating rod (16) is perpendicular to the central axis of the first electric telescopic rod (11) and is in the same vertical plane. The internal expansion fixing component (17) is located inside the plug-in rotating rod (16). The hydraulic telescopic column (18) and the fixed insert rod (19) are respectively horizontally mounted on one side of the vertical plate of the positioning frame (6). The fixed insert rod (19) is located inside the hydraulic telescopic column (18). The hydraulic telescopic column (18) is a hollow structure. An air pump (21) is provided on the telescopic end of the hydraulic telescopic column (18). The telescopic end of the hydraulic telescopic column (18) is a circular disc with air holes (20) evenly distributed around its circumference. The evenly distributed air holes (20) are connected to each other and are connected to the output end of the air pump (21).

5. A high-precision polishing device based on valve processing according to claim 4, characterized in that: The internal expansion and fixing component (17) includes a motor (23), a two-way lead screw (22), a cross slider (24), and an expansion plate (26). The motor (23) is embedded in the plug-in rotating rod (16). The two-way lead screw (22) is located at the output end of the motor (23). The cross slider (24) is symmetrically engaged at both ends of the two-way lead screw (22). The cross slider (24) slides within the plug-in rotating rod (16). The expansion plate (26) is evenly distributed around the outside of the cross slider (24). The evenly distributed expansion plate (26) is rotatably connected to the two cross sliders (24) by connecting plates (25). When the second electric telescopic rod (28) is fully extended, the center of the inner hole three-jaw clamping disc (12) is on the same straight line as the center of the positioning block (33), and is in the same plane as the center section of the tensioning plate (26).

6. A high-precision polishing device based on valve processing according to claim 5, characterized in that: The third electric telescopic rod (35) has an adjustment motor (36) on one side of its output end. The output end of the adjustment motor (36) has an adjustment tooth (37). The adjustment tooth (37) meshes with a follower tooth (38). The follower tooth (38) is rotatably connected to the end of the third electric telescopic rod (35). A fine-tuning telescopic rod (39) is fixedly connected to the follower tooth (38). The detection probe (40) is located on the output end of the fine-tuning telescopic rod (39).

7. A high-precision polishing device based on valve processing according to claim 6, characterized in that: The liquid storage mechanism (5) includes a liquid storage tank (42), a central through rod (44), a tank cover (43), and a conversion through rod (47). The liquid storage tank (42) is located on the side of the operating table (1) near the mold clamping mechanism (4). The central through rod (44) is located at the center of the liquid storage tank (42). There are three partitions (45) evenly distributed on the outer circumference of the central through rod (44). The partitions (45) are connected to the inner wall of the liquid storage tank (42). There are liquid channels (46) evenly distributed on the bottom circumference of the central through rod (44). The liquid channels (46) are located between the partitions (45).

8. A high-precision polishing device based on valve processing according to claim 7, characterized in that: The lid (43) is installed on the storage tank (42). The switching rod (47) is rotatably located at the center of the lid (43). The switching rod (47) is rotatably inserted into the central rod (44). The lower end of the switching rod (47) is provided with a liquid inlet (48). When the switching rod (47) rotates in the central rod (44), the liquid inlet (48) is connected to the liquid channel (46). The upper end of the switching rod (47) is fitted with a switching tooth (51). The lid (43) is provided with a liquid pump (49) and a drive motor (50). The output end of the drive motor (50) is provided with a drive tooth (52). The drive tooth (52) meshes with the switching tooth (51). The liquid pump (49) is connected to the switching rod (47). The output end of the liquid pump (49) is connected to the liquid pipe (13).

9. A high-precision polishing device based on valve processing according to claim 8, characterized in that: The operating table (1) is provided with a waste liquid tank (41), which is located directly below the internal expansion and fixing component (17). The waste liquid tank (41) is provided with a first valve (53) and a second pump (54). The first valve (53) is connected to a drain pipe, and the second pump (54) is connected to the storage tank (42) with a recovery pipe (55).

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