A ball valve ball surface polishing device

Abstract

The application belongs to the technical field of polishing equipment, and specifically discloses a ball valve ball surface polishing equipment which comprises a workbench, a stand, a Z-axis driving mechanism, an X-axis driving mechanism and a Y-axis driving mechanism, both sides above the workbench are provided with grinding seat replacement placing assemblies, the stand is fixedly installed outside the workbench, the X-axis driving mechanism is arranged outside the stand, the X-axis driving mechanism is connected with the Z-axis driving mechanism through an X-axis sliding table, the Z-axis driving mechanism is connected with a stand base through a Z-axis sliding table, both sides outside the stand base are provided with supports, guide columns are vertically connected to the bottoms of the two supports, sliding discs are slidably sleeved with the guide columns, clamping and feeding assemblies are symmetrically arranged on the lower surfaces of the sliding discs, and shaft rods are fixedly arranged below the outside of the stand. The ball valve ball surface polishing equipment can greatly shorten the grinding seat replacement time, improve the continuous production efficiency of ball valve ball surface polishing and the equipment operation rate.

Description

Technical Field

[0001] This invention belongs to the field of grinding equipment technology, and specifically discloses a ball valve ball surface grinding equipment. Background Technology

[0002] During the production of ball valves, the outer surface of the ball needs to be ground to ensure sealing performance and surface finish. To improve grinding efficiency and automation, various specialized grinding devices have been developed.

[0003] For example, Chinese invention patent CN105690207A discloses a device for grinding the outer cylindrical surface of a ball valve. This device uses a tip mechanism to clamp the ball valve body and drive it to rotate. A grinding disc is positioned on one side of the ball, with a frustum-shaped groove on its surface. Multiple grinding rods, perpendicular to the disc surface, are evenly arranged along the outer edge of the groove. During grinding, the rotating ball contacts the fixed grinding rods, achieving the grinding of the outer cylindrical surface. This solution solves, to a certain extent, the basic problems of ball clamping and rotational grinding, and its structure is relatively simple.

[0004] However, in practical continuous production applications, it has been found that the disclosed technical solution involves several drawbacks. First, the grinding rod is fixed to the grinding disc by inserting it into the mounting slot and locking it with a tightening bolt, which is a rigid bolt connection. When the grinding rod wears down to failure due to long-term grinding, the operator must loosen the tightening bolts one by one, remove the old grinding rod, replace it with a new one, and re-tighten it. This entire process consumes a significant amount of time for disassembly, assembly, and alignment adjustments. Second, the grinding disc itself is also fixed to the grinding base with bolts. If the entire disc needs to be replaced or the radial position of the grinding rod needs to be adjusted, the same cumbersome disassembly and recalibration process is required. These defects lead to frequent equipment shutdowns in continuous ball valve ball grinding operations to replace grinding rods or adjust grinding tools, severely disrupting the production cycle and significantly reducing the overall efficiency and equipment uptime of the production line. When the grinding base wears down to failure and needs to be replaced, the operator must spend a significant amount of time disassembling and realigning it, a cumbersome and time-consuming process.

[0005] The aforementioned defects necessitate frequent equipment shutdowns during the daily continuous operation of ball valve ball grinding to replace worn grinding tools. However, the lack of a mechanism for rapid and precise tool replacement and installation severely disrupts the production cycle each time, significantly reducing the overall efficiency of the production line and equipment uptime, causing considerable inconvenience to large-scale, continuous production organization. Therefore, solving the problem of rapid tool replacement and calibration-free installation has become a pressing technical obstacle to overcome in this field. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the background art, and to propose a ball valve ball surface grinding device, including a worktable, a frame, a Z-axis drive mechanism, an X-axis drive mechanism, and a Y-axis drive mechanism. Grinding seat replacement and placement assemblies are provided on both sides of the upper part of the worktable. The frame is fixedly installed outside the worktable. The X-axis drive mechanism is located outside the frame and is connected to the Z-axis drive mechanism via an X-axis slide. The Z-axis drive mechanism is connected to a support base via the Z-axis slide. Supports are provided on both sides of the outer side of the support base. Guide posts are vertically connected to the bottom of each of the two supports, and sliding discs are slidably sleeved on the outside of the guide posts. The lower surface of the slide is symmetrically equipped with clamping and feeding components. A shaft is fixedly installed on the lower exterior of the frame. A fixed seat is provided at one end of the shaft. A swing frame is fixedly installed at the front end of the fixed seat. The swing frame is equipped with arc surface grinding components through internal bidirectional drive components. A grinding seat mounting and dismounting component is provided at one end of each arc surface grinding component. The Y-axis drive mechanism is located above the worktable and near the middle. The Y-axis drive mechanism is connected to a rotary lifting mechanism through a Y-axis slide. A pressure rod is connected to the drive end of the rotary lifting mechanism. A ball valve ball is provided at the upper end of the pressure rod. A rotating mechanism is provided above the frame for the upper surface of the ball valve ball to rotate and press against it.

[0007] In the above scheme, the grinding seat replacement placement assembly further includes a grinding head swing frame, which is vertically installed on one side above the worktable. Two clamping cylinders are fixedly installed inside the upper part of the grinding head swing frame, and a replacement inner arc surface grinding seat is slidably inserted inside the two clamping cylinders.

[0008] In the above scheme, the clamping and feeding assembly further includes an electric telescopic cylinder. One end of the electric telescopic cylinder is connected to the lower surface of the support arm, and the lower end of the electric telescopic cylinder is connected to the upper surface of the slide plate. Guide rods are symmetrically arranged on the lower surface of the slide plate. U-shaped connecting seats are symmetrically fixedly installed on both sides of the outer side of the guide post. A rotating shaft is rotatably inserted inside the U-shaped connecting seat. A clamping rod is fixedly sleeved on the outside of the rotating shaft. A telescopic sliding assembly is provided on the upper surface of the clamping rod.

[0009] In the above scheme, the telescopic sliding assembly further includes a stop shell, which is fixedly installed on the upper surface of the clamping rod. A sliding groove is formed on the upper surface of the stop shell, and a ball block is slidably installed inside the sliding groove. A top rod is fixedly connected to the upper surface of the ball block, and the upper end of the top rod is connected to the lower surface of the sliding plate.

[0010] In the above scheme, the bidirectional drive component further includes a bidirectional telescopic cylinder, which is fixedly installed inside the fixed base. Both ends of the bidirectional telescopic cylinder are fixedly installed with transverse sliding seats. The two transverse sliding seats are slidably fitted onto the outside of both ends of the swing frame. The inside of one end of the two transverse sliding seats is connected to the corresponding arc surface grinding component. The front end of the two transverse sliding seats is fixedly installed with a baffle.

[0011] In the above scheme, the arc surface grinding assembly further includes a drive motor, which is fixedly installed inside the transverse base. A notched mounting plate is fixedly installed at the output end of the drive motor. A notched ring shell is fixedly installed on the outer edge of the notched mounting plate. A notched abutment plate is fixedly installed on the outer surface of the notched mounting plate. An assembly vertical shell is fixedly embedded at one end of the notched abutment plate. A curved surface is machined at the axis near the notched mounting plate to fit the outer abutment of one end of the inner arc surface grinding base shaft. A connecting shaft is fixedly installed on the upper surface of one side of the fixed base. A main motor is fixedly installed on one side of the frame near the top. A shaft plate is fixedly installed at the output end of the main motor. The shaft plate is connected to the connecting shaft via a rocker arm on one side, thereby driving the swing frame and the fixed base to swing.

[0012] In the above scheme, the grinding base assembly further includes two insert shells, which are symmetrically fitted into the two sides of the notch abutment. The inner cavity of each insert shell is rectangular. One side of each insert shell is connected to the inner wall of the notch ring shell. A curved guide block is slidably installed inside the insert shell. A cylindrical shell is fixedly installed on one side of the curved guide block. A core rod is slidably installed at one end of the cylindrical shell. A tool holder limiting block is fixedly fitted on the outside of the end of the core rod away from the cylindrical shell. A vibration spring is fitted on the outside of the core rod. The two ends of the vibration spring are respectively connected to the tool holder limiting block and the end of the cylindrical shell that are close to each other.

[0013] In the above scheme, the outer side of the inner arc grinding seat shaft end is provided with a slot for the tool holder limiting block to be fitted. The inner sides of the assembly vertical shell and the notched abutment are provided with slots for the tool holder limiting block to slide through. A hydraulic rod is fixedly installed on the rear end of the notched abutment and on the side close to the corresponding curved guide block. A ball bearing seat is fixedly installed on the telescopic end of the hydraulic rod. The ball bearing seat extends into the inner side of the mounting shell. The ball bearing surface of the ball bearing seat abuts against the outer surface of the curved guide block.

[0014] In the above scheme, the rotating mechanism further includes a rotary motor, which is fixedly mounted on the upper surface of the frame. A locking rod is fixedly mounted on the output end of the rotary motor, and the locking rod is connected to the upper surface of the ball valve ball.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Building upon the advantages of contour grinding of the outer spherical surface of a ball valve ball, this invention focuses on innovating the rapid replacement and clamping feeding mechanism of the grinding base. By setting up a clamping feeding assembly consisting of an electric telescopic cylinder, slide plate, guide column, U-shaped connecting seat, rotating shaft, clamping rod, and ball bearing slider, automatic centering and stable feeding of the ball valve ball is achieved, with high adaptability. Simultaneously, a grinding base assembly for assembly and disassembly is designed at the end of the arc-surface grinding assembly, consisting of a tool holder limiting block, vibration spring, curved guide block, hydraulic rod, and ball bearing abutment. The linkage between these two components is manifested when the inner arc-surface grinding base becomes severely worn due to long-term high-frequency oscillation. The hydraulic rod drives the ball bearing abutment to release the curved guide block, and the tool holder limiting block automatically disengages from the bayonet at the end of the grinding base under the action of the vibration spring. Then, while maintaining the ball's position through the clamping feeding assembly on the device, the old grinding base is quickly extracted and the new grinding base is taken from the grinding head holder and inserted into the assembly vertical shell. Subsequently, the hydraulic rod re-clamps and locks the new grinding base. Throughout the entire replacement process, the clamping and feeding assembly does not need to be reset or disassembled, and the ball's posture remains stable, enabling rapid ball replacement of the ball valve.

[0016] 2. The clamping and feeding assembly and the quick-assembly assembly of the grinding base work in close coordination. Specifically, when the grinding cycle or wear of the inner arc surface grinding base reaches the wear value, the electric telescopic cylinder in the clamping and feeding assembly pushes the slide plate downward. Through the transmission of the ball bearing slider and the abutment shell, the clamping rods on both sides open outward. Then, driven by the X-axis and Z-axis drive mechanisms, the inner arc surface grinding base on one side is replaced first. At this time, the corresponding grinding base assembly unlocks and removes the old grinding base. Then, the new inner arc surface grinding base is clamped on one side and transported to the side of the drive motor. After the old inner arc surface grinding base is removed, it enters from above the mounting shell and the assembly vertical shell. Then, the new inner arc surface grinding base is inserted. The hydraulic rod presses against the corresponding curved guide block, causing the curved guide block to insert into the bayonet at the shaft end of the new inner arc surface grinding base, automatically locking it in place. This greatly improves the grinding base replacement efficiency and increases processing efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is another schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram showing the connection between the swing frame and the arc surface grinding component of the present invention. Figure 4 This is a schematic diagram showing the connection structure between the notched abutment, the notched ring cover, and the assembled vertical shell of the present invention. Figure 5 This is a schematic diagram from another angle showing the connection structure between the notched abutment, the notched ring cover, and the assembled vertical shell of the present invention. Figure 6 This is a schematic diagram of the overall structure of the clamping and feeding assembly of the present invention; Figure 7 This is a schematic diagram showing the partial structural connection between the notched abutment and the embedded shell of the present invention; Figure 8 This is a schematic diagram showing the disassembled connection structure of the inner part of the embedded shell of the present invention; Figure 9 For the present invention Figure 6 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Worktable; 2. Stand; 3. Z-axis drive mechanism; 4. X-axis drive mechanism; 5. Frame; 6. Grinding head swing frame; 7. Drive motor; 8. Rotary lifting mechanism; 9. Y-axis drive mechanism; 10. Ball valve ball; 11. Baffle; 12. U-shaped connecting seat; 13. Inner arc surface grinding seat; 14. Support arm; 15. Rotary motor; 16. Bracket; 17. Sheath; 18. Clamping rod; 19. Shaft; 20. Swing frame; 21. Ball bearing slide. 21. Block; 22. Notched ring shell; 23. Notched mounting plate; 24. Bidirectional telescopic cylinder; 25. Fixed seat; 26. Main motor; 27. Rocker arm; 28. Rotating shaft; 29. ​​Horizontal sliding seat; 30. Connecting shaft; 31. Assembly vertical shell; 32. Tool holder limit block; 33. Hydraulic rod; 34. Curved guide block; 35. Ball bearing seat; 36. Cylinder shell; 37. Vibration spring; 38. Notched bearing plate; 39. Electric telescopic cylinder; 40. Guide column; 41. Sliding plate. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0021] like Figures 1-9The ball valve ball surface grinding equipment shown includes a worktable 1, a frame 2, a Z-axis drive mechanism 3, an X-axis drive mechanism 4, and a Y-axis drive mechanism 9. Grinding seat replacement and placement assemblies are provided on both sides of the upper part of the worktable 1. The frame 2 is fixedly installed outside the worktable 1. The X-axis drive mechanism 4 is located outside the frame 2 and is connected to the Z-axis drive mechanism 3 via an X-axis slide. The Z-axis drive mechanism 3 is connected to a support 5 via a Z-axis slide. Supports 16 are provided on both sides of the outer surface of the support 5. Guide posts 40 are vertically connected to the bottom of each support 16. A sliding plate 41 is slidably sleeved on the outside of the guide posts 40. The lower surface of the sliding plate 41 is aligned with... The device is equipped with a clamping and feeding assembly. A shaft 19 is fixedly installed on the lower exterior of the frame 2. A fixed seat 25 is installed at one end of the shaft 19. A swing frame 20 is fixedly installed at the front end of the fixed seat 25. The swing frame 20 is equipped with arc surface grinding assemblies through internal bidirectional drive components. A grinding seat mounting and dismounting assembly is installed at one end of each arc surface grinding assembly. The Y-axis drive mechanism 9 is located above the worktable 1 and near the middle. The Y-axis drive mechanism 9 is connected to a rotary lifting mechanism 8 through a Y-axis slide. A pressure rod is connected to the drive end of the rotary lifting mechanism 8. A ball valve ball 10 is installed at the upper end of the pressure rod. A rotating mechanism for rotating and pressing the upper surface of the ball valve ball 10 is installed above the frame 5.

[0022] In this embodiment, before grinding, the Y-axis drive mechanism 9 drives the Y-axis slide to move the rotary lifting mechanism 8 along the Y-axis, transporting the ball valve ball 10 to the grinding station. The rotary lifting mechanism 8 drives the pressure rod to rise, while the Z-axis drive mechanism 3 drives the frame 5 to fall, so that the rotating mechanism on the frame 5 presses against the upper surface of the ball valve ball 10; During the grinding process, the shaft 19 below the platform 2 drives the fixed seat 25 and the swing frame 20 to swing. The bidirectional drive inside the swing frame 20 drives the arc surface grinding components on both sides to perform contour grinding on the outer spherical surface of the ball valve ball 10. When the inner arc surface grinding seat 13 is worn and needs to be replaced, the grinding seat installation and removal component at the end of the arc surface grinding component removes the old inner arc surface grinding seat 13. Then, the clamping and feeding component clamps the new inner arc surface grinding seat 13 from the replacement placement component and automatically locks it in place. The whole process does not require disassembling any bolts or readjusting the trajectory.

[0023] Through the above structure, while maintaining the adaptability of the oscillating grinding surface, the coordinated control of the X, Y, and Z axes, combined with the timing linkage between the clamping and feeding assembly and the grinding base assembly, enables the ball valve ball 10 to be quickly replaced without disassembly or repositioning, significantly reducing downtime and improving the efficiency of equipment for continuous production.

[0024] The grinding head replacement and placement assembly includes a grinding head holder 6, which is vertically installed on one side above the worktable 1. Two clamping cylinders are fixedly installed inside the upper part of the grinding head holder 6, and a replacement inner arc surface grinding seat 13 is slidably inserted inside the two clamping cylinders.

[0025] In this embodiment, in the prior art, when changing the grinding base, the operator needs to find a spare grinding base from the tool cabinet and manually align it to the installation position, which is inefficient and prone to errors.

[0026] Inside each chuck of the grinding head holder 6, a replaceable inner arc surface grinding seat 13 is slidably inserted. During normal grinding operations, the spare inner arc surface grinding seat 13 is always inserted in the chuck, ready for use. When the current inner arc surface grinding seat 13 is worn to the required level, the X-axis drive mechanism 4 and the Z-axis drive mechanism 3 work together to move the clamping and feeding assembly to the grinding head holder 6, clamp and remove the new inner arc surface grinding seat 13, and transport it to the assembly position of the arc surface grinding assembly, with the removal and placement proceeding from top to bottom.

[0027] The clamping and feeding assembly includes an electric telescopic cylinder 39. One end of the electric telescopic cylinder 39 is connected to the lower surface of the support arm 14, and the lower end of the electric telescopic cylinder 39 is connected to the upper surface of the slide plate 41. Guide rods are symmetrically arranged on the lower surface of the slide plate 41. U-shaped connecting seats 12 are symmetrically fixed on both sides of the guide post 40. A rotating shaft 28 is rotatably inserted inside the U-shaped connecting seat 12. A clamping rod 18 is fixedly sleeved on the outside of the rotating shaft 28. A telescopic sliding assembly is provided on the upper surface of the clamping rod 18.

[0028] In this embodiment, when it is necessary to clamp or release the ball valve ball 10, the electric telescopic cylinder 39 extends or retracts, pushing the slide plate 41 to slide up and down along the guide post 40. The movement of the slide plate 41 is converted into the opening or closing action of the clamping rod 18 around the rotating shaft 28 through the telescopic sliding assembly, thereby realizing the automatic centering and clamping of the ball valve ball 10. During the grinding process, the clamping and feeding assembly maintains the clamping state of the ball valve ball 10, and only the Z-axis drive mechanism 3 and the X-axis drive mechanism 4 drive the entire assembly to move, thereby completing the picking and placing of the new and old grinding seats without changing the posture of the ball valve ball 10. This achieves stable clamping and automatic feeding of the ball valve ball 10 throughout the grinding process, avoids repeated positioning errors, and improves processing consistency.

[0029] The telescopic sliding assembly includes a stop shell 17, which is fixedly installed on the upper surface of the clamping rod 18. A groove is provided on the upper surface of the stop shell 17, and a ball block 21 is slidably installed inside the groove. A top rod is fixedly connected to the upper surface of the ball block 21, and the upper end of the top rod is connected to the lower surface of the sliding plate 41.

[0030] In this embodiment, when the electric telescopic cylinder 39 pushes the slide plate 41 downward, the push rod pushes the ball block 21 to slide within the groove of the abutment 17. Since the abutment 17 is fixedly connected to the clamping rod 18, and the clamping rod 18 rotates around the rotating shaft 28, the slide plate 41 is lifted upward. Conversely, when the slide plate 41 is lifted upward, the clamping rod 18 closes, and an anti-slip rubber pad is attached to the inner clamping end face of the clamping rod 18 to improve the clamping stability of the ball valve ball 10 and prevent slippage.

[0031] This telescopic sliding assembly has a compact structure and high transmission efficiency, enabling reliable clamping force transmission in a small space. Furthermore, the rolling friction between the ball block 21 and the groove reduces wear, improving service life and operational reliability.

[0032] It is important to emphasize that the abutment 17 is located on one side edge of the clamping rod 18 and is not coaxial with the rotating shaft 28. Therefore, when the push rod is pressed by the slide plate 41, it causes the ball block 21 to move downward to one end of the clamping rod 18, at which point the clamping rod 18 can clamp.

[0033] The bidirectional drive component includes a bidirectional telescopic cylinder 24, which is fixedly installed inside the fixed base 25. Both ends of the bidirectional telescopic cylinder 24 are fixedly installed with transverse sliding seats 29. The two transverse sliding seats 29 are slidably fitted onto the outside of both ends of the swing frame 20. The inside of one end of the two transverse sliding seats 29 is connected to the corresponding arc surface grinding component. The front end of the two transverse sliding seats 29 is fixedly installed with a baffle 11.

[0034] In this embodiment, in existing swing-type grinding equipment, the distance between the two grinding stations is usually fixed. When picking up and putting down the ball valve ball 10, the space between them is small. Now, by driving the bidirectional telescopic cylinder 24 to extend or retract, the two transverse moving seats 29 move synchronously towards or away from each other, thereby adjusting the distance between the two arc-shaped grinding components, so that the inner arc-shaped grinding seat 13 can be easily placed and removed.

[0035] The arc surface grinding assembly includes a drive motor 7, which is fixedly installed inside the transverse base 29. A notched mounting plate 23 is fixedly installed at the output end of the drive motor 7. A notched ring shell 22 is fixedly installed on the outer edge of the notched mounting plate 23. A notched abutment plate 38 is fixedly installed on the outer surface of the notched mounting plate 23. An assembly vertical shell 31 is fixedly embedded at one end inside the notched abutment plate 38. A curved surface is machined at the axis of the assembly vertical shell 31 near the notched mounting plate 23 to fit the outer abutment of one end of the shaft end of the inner arc surface grinding base 13. A connecting shaft rod 30 is fixedly installed on the upper surface of one side of the fixed base 25. A main motor 26 is fixedly installed on one side and near the top inside the frame 2. A shaft plate is fixedly installed at the output end of the main motor 26. The shaft plate is connected to the connecting shaft rod 30 through a rocker arm 27 on one side, thereby driving the swing frame 20 and the fixed base 25 to swing.

[0036] In this embodiment, regarding the swinging motion, a main motor 26 is fixedly installed above the interior of the frame 2. A shaft disk is installed at the output end of the main motor 26, and the shaft disk is connected to the connecting shaft 30 on the fixed seat 25 via a rocker arm 27. When the main motor 26 rotates, the rocker arm 27 drives the connecting shaft 30 to swing back and forth, thereby driving the swing frame 20 and the fixed seat 25 to swing as a whole. At the same time, the drive motor 7 drives the notched mounting plate 23 to rotate at high speed, causing the inner arc surface grinding seat 13 inside the assembly vertical shell 31 to rotate.

[0037] The grinding base assembly includes two insert shells, which are symmetrically fitted into the inner sides of the notched abutment 38. The inner cavities of the insert shells are rectangular. One side of the insert shell is connected to the inner wall of the notched annular shell 22. A curved guide block 34 is slidably installed inside the insert shell. A cylindrical shell 36 is fixedly installed on one side of the curved guide block 34. A core rod is slidably installed at one end inside the cylindrical shell 36. A tool holder limiting block 32 is fixedly fitted on the outer side of the end of the core rod away from the cylindrical shell 36. A vibration spring 37 is fitted on the outer side of the core rod. The two ends of the vibration spring 37 are respectively connected to the tool holder limiting block 32 and the tool holder limiting block 32. The cylindrical shells 36 are connected at their close ends. The outer side of the inner arc grinding seat 13 shaft end is provided with a corresponding slot for the tool holder limiting block 32 to be fitted. The vertical shell 31 and the notched abutment 38 are both provided with slots for the tool holder limiting block 32 to slide through. A hydraulic rod 33 is fixedly installed on the rear end of the notched abutment 38 and on the side close to the corresponding curved guide block 34. A ball bearing seat 35 is fixedly installed on the telescopic end of the hydraulic rod 33. The ball bearing seat 35 extends into the interior of the embedded shell, and the ball surface of the ball bearing seat 35 abuts against the outer surface of the curved guide block 34.

[0038] In this embodiment, when it is necessary to lock the inner arc surface grinding base 13, the hydraulic rod 33 pushes the curved guide block 34 to move towards the axis of the notch abutment 38, compressing the vibration spring 37, and the tool holder limiting block 32 is inserted into the bayonet at the shaft end of the inner arc surface grinding base 13. When it is necessary to release, the external force is released, and the elastic force of the vibration spring 37 causes the tool holder limiting block 32 to automatically exit the bayonet.

[0039] The specific usage is as follows: when locked, the hydraulic rod 33 extends, the ball bearing seat 35 presses against the curved guide block 34, causing the curved guide block 34 to slide and push the tool holder limit block 32 through the slot into the bayonet.

[0040] During unlocking, the hydraulic rod 33 retracts, and the vibration spring 37 pushes the tool holder limit block 32 out of the bayonet. The ball surface of the ball bearing seat 35 reduces friction with the curved guide block 34.

[0041] The system achieves automatic locking and releasing of the grinding base using a spring-loaded mechanism, allowing for tool-free fixing and significantly reducing replacement time. Simultaneously, the vibration spring 37 absorbs high-frequency vibrations during grinding, reducing fretting wear on the grinding base.

[0042] The rotating mechanism includes a rotary motor 15, which is fixedly mounted on the upper surface of the bracket 5. A locking rod is fixedly mounted on the output end of the rotary motor 15, and the locking rod is connected to the upper surface of the ball valve ball 10.

[0043] In this embodiment, after the rotary lifting mechanism 8 lifts the ball valve ball 10 to a predetermined height, the rotary motor 15 drives the locking rod to rotate, and at the same time, the pressing rod of the rotary lifting mechanism 8 also rotates synchronously. The two together drive the ball valve ball 10 to rotate at a constant speed around its axis. During the grinding process, the rotation of the ball valve ball 10 and the swing-rotation compound motion of the inner arc surface grinding seat 13 cooperate to achieve all-round coverage of the outer spherical surface of the ball valve.

[0044] Working principle: First, the ball valve ball 10 to be ground is placed on the pressure rod at the upper end of the rotary lifting mechanism 8. The Y-axis drive mechanism 9 is activated, driving the rotary lifting mechanism 8 to move along the Y-axis direction via the Y-axis slide, transporting the ball valve ball 10 to the grinding station. Subsequently, the rotary lifting mechanism 8 drives the pressure rod to rise, lifting the ball valve ball 10 to a predetermined height. Simultaneously, the Z-axis drive mechanism 3 drives the support 5 to descend, causing the locking rod in the rotating mechanism above the support 5 to abut against the upper surface of the ball valve ball 10.

[0045] During the conventional grinding process, after the ball valve ball 10 is clamped and rotated, the arc surface grinding assembly is activated. Specifically, the bidirectional telescopic cylinder 24 drives the transverse sliding seats 29 on both sides to move towards or away from each other along the swing frame 20 to adjust the distance between the two arc surface grinding assemblies to accommodate ball valve balls 10 of different specifications. Subsequently, the main motor 26 starts, driving the rocker arm 27 to reciprocate through the shaft disc. The rocker arm 27 drives the fixed seat 25 and the swing frame 20 to swing synchronously through the connecting shaft 30. At the same time, the drive motor 7 starts, driving the notched mounting plate 23, the notched ring shell 22, and the notched abutment plate 38 to rotate at high speed. The inner arc surface grinding seat 13 installed inside the assembly vertical shell 31 rotates accordingly, grinding the outer spherical surface of the ball valve ball 10 to ensure uniform grinding. The rotation of the ball valve ball 10 and the swing rotation of the inner arc surface grinding seat 13 work together to achieve all-round contour grinding of the outer spherical surface of the ball valve.

[0046] When the inner arc surface grinding base 13 is severely worn and needs to be replaced, the telescopic end of the hydraulic rod 33 retracts, causing the ball bearing seat 35 to disengage from the outer surface of the curved guide block 34. At this time, under the elastic force of the vibration spring 37, the core rod pops out of the cylinder shell 36, causing the tool holder limiting block 32 to slide out of the bayonet on the outer side of the old inner arc surface grinding base 13 shaft end, thus unlocking the old inner arc surface grinding base 13.

[0047] Then, the X-axis drive mechanism 4 and the Z-axis drive mechanism 3 work together to move the clamping and feeding assembly to the grinding head swing frame 6, clamping the new inner arc surface grinding seat 13 into the upper sliding sleeve. Finally, the clamping and feeding assembly transports the new inner arc surface grinding seat 13 to the top of the assembly vertical shell 31 and inserts it vertically. After insertion, the hydraulic rod 33 extends again, driving the ball bearing seat 35 to press against the curved guide block 34. The curved guide block 34 slides within the mounting shell, pushing the cylinder shell 36 and the core rod inward, causing the tool holder limiting block 32 to re-engage in the slot on the outer side of the shaft end of the new inner arc surface grinding seat 13, achieving automatic locking. After replacement, the equipment can immediately resume grinding operations.

[0048] In summary, by coordinating the timing of the clamping and feeding assembly and the grinding base assembly, this invention enables the rapid unlocking, removal, replacement, and automatic locking of the worn inner arc surface grinding base 13 while the ball valve ball 10 remains in a clamped position. This significantly reduces downtime and improves the continuous production efficiency of grinding operations.

[0049] 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 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 claimed invention.

Claims

1. A ball valve ball surface grinding device, comprising a worktable (1), a frame (2), a Z-axis drive mechanism (3), an X-axis drive mechanism (4), and a Y-axis drive mechanism (9), characterized in that, Grinding seat replacement and placement components are provided on both sides above the worktable (1). The frame (2) is fixedly installed outside the worktable (1). The X-axis drive mechanism (4) is located outside the frame (2), and the X-axis drive mechanism (4) is connected to the Z-axis drive mechanism (3) through the X-axis slide. The Z-axis drive mechanism (3) is connected to the frame (5) through the Z-axis slide. The frame (5) is provided on both sides outside the frame (5). The bottom of the two frames (16) is vertically connected to the guide column (40). The guide column (40) is slidably sleeved with the slide plate (41). The lower surface of the slide plate (41) is symmetrically provided with clamping and feeding components. The frame (2) is fixedly installed below the outside of the frame (2). There is a shaft (19), one end of which is provided with a fixed seat (25). A swing frame (20) is fixedly installed at the front end of the fixed seat (25). The swing frame (20) is provided with arc surface grinding components through internal bidirectional drive components. One end of the arc surface grinding components is provided with a grinding seat assembly and disassembly assembly. The Y-axis drive mechanism (9) is located above the worktable (1) and near the middle. The Y-axis drive mechanism (9) is connected to a rotary lifting mechanism (8) through a Y-axis slide. The drive end of the rotary lifting mechanism (8) is connected to a pressure rod. A ball valve ball (10) is provided at the upper end of the pressure rod. A rotating mechanism for rotating and pressing the upper surface of the ball valve ball (10) is provided above the frame (5).

2. The ball valve ball surface grinding equipment according to claim 1, characterized in that, The grinding seat replacement and placement assembly includes a grinding head swing frame (6), which is vertically installed on one side above the worktable (1). Two clamping cylinders are fixedly installed inside the grinding head swing frame (6), and a replacement inner arc surface grinding seat (13) is slidably inserted inside the two clamping cylinders.

3. The ball valve ball surface grinding equipment according to claim 1, characterized in that, The clamping and feeding assembly includes an electric telescopic cylinder (39). One end of the electric telescopic cylinder (39) is connected to the lower surface of the support arm (14), and the lower end of the electric telescopic cylinder (39) is connected to the upper surface of the slide plate (41). Guide rods are symmetrically arranged on the lower surface of the slide plate (41). U-shaped connecting seats (12) are symmetrically fixed on both sides of the guide post (40). A rotating shaft (28) is rotatably inserted inside the U-shaped connecting seat (12). A clamping rod (18) is fixedly sleeved on the outside of the rotating shaft (28). A telescopic sliding assembly is provided on the upper surface of the clamping rod (18).

4. The ball valve ball surface grinding equipment according to claim 3, characterized in that, The telescopic sliding assembly includes a stop shell (17), which is fixedly installed on the upper surface of the clamping rod (18). A groove is provided on the upper surface of the stop shell (17), and a ball block slider (21) is slidably installed inside the groove. A top rod is fixedly connected to the upper surface of the ball block slider (21), and the upper end of the top rod is connected to the lower surface of the sliding plate (41).

5. The ball valve ball surface grinding equipment according to claim 1, characterized in that, The bidirectional drive component includes a bidirectional telescopic cylinder (24), which is fixedly installed inside the fixed base (25). Both ends of the bidirectional telescopic cylinder (24) are fixedly installed with transverse sliding seats (29). The two transverse sliding seats (29) are slidably fitted on the outside of both ends of the swing frame (20). The inside of one end of the two transverse sliding seats (29) is connected to the corresponding arc surface grinding component. The front end of the two transverse sliding seats (29) is fixedly installed with a baffle (11).

6. The ball valve ball surface grinding equipment according to claim 5, characterized in that, The arc surface grinding assembly includes a drive motor (7), which is fixedly installed inside the transverse support (29). A notched mounting plate (23) is fixedly installed at the output end of the drive motor (7). A notched ring shell (22) is fixedly installed on the outer edge of the notched mounting plate (23). A notched abutment plate (38) is fixedly installed on the outer surface of the notched mounting plate (23). An assembly vertical shell (31) is fixedly embedded at one end inside the notched abutment plate (38). The assembly vertical shell (31) is close to the notch. The mounting plate (23) has a curved surface at the center of the shaft that is adapted to the outer end of the inner arc grinding seat (13). A connecting shaft (30) is fixedly installed on the upper surface of one side of the fixed seat (25). A main motor (26) is fixedly installed on one side of the frame (2) near the top. A shaft disk is fixedly installed at the output end of the main motor (26). The shaft disk is connected to the connecting shaft (30) through a rocker arm (27) on one side, thereby driving the swing frame (20) and the fixed seat (25) to swing.

7. The ball valve ball surface grinding equipment according to claim 6, characterized in that, The grinding base assembly includes two insert shells, which are symmetrically fitted into the two sides of the notched abutment plate (38). The inner cavity of the insert shell is rectangular. One side of the insert shell is connected to the inner wall of the notched ring shell (22). A curved guide block (34) is slidably installed inside the insert shell. A cylindrical shell (36) is fixedly installed on one side of the curved guide block (34). A core rod is slidably installed at one end inside the cylindrical shell (36). A tool holder limiting block (32) is fixedly fitted on the outside of the end of the core rod away from the cylindrical shell (36). A vibration spring (37) is fitted on the outside of the core rod. The two ends of the vibration spring (37) are respectively connected to the tool holder limiting block (32) and the cylindrical shell (36) at their respective close ends.

8. The ball valve ball surface grinding equipment according to claim 7, characterized in that, The inner arc grinding seat (13) has a corresponding slot for the tool holder limiting block (32) to be fitted on the outer side of the shaft end. The assembly vertical shell (31) and the notched abutment (38) both have slots for the tool holder limiting block (32) to slide through. The rear end of the notched abutment (38) and the side close to the corresponding curved guide block (34) are fixedly installed with hydraulic rods (33). The telescopic end of the hydraulic rod (33) is fixedly installed with a ball bearing seat (35). The ball bearing seat (35) extends into the interior of the mounting shell. The ball surface of the ball bearing seat (35) abuts against the outer surface of the curved guide block (34).

9. The ball valve ball surface grinding equipment according to claim 1, characterized in that, The rotating mechanism includes a rotary motor (15), which is fixedly mounted on the upper surface of the frame (5). A locking rod is fixedly mounted on the output end of the rotary motor (15), and the locking rod is connected to the upper surface of the ball valve ball.

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