A casting water meter shell polishing device and a polishing method

Abstract

The application is a kind of casting water meter shell polishing device and polishing method, belongs to the field of polishing equipment. Its technical scheme is a kind of casting water meter shell polishing device, including equipment main body, the equipment main body is equipped with lifting mechanism, the lifting end of lifting mechanism is installed with rotary displacement mechanism, rotary displacement mechanism includes a plurality of clamping assemblies for fixing and clamping water meter shell, clamping assembly is located at the lower end of rotary displacement mechanism, a plurality of clamping assemblies are uniformly arranged around the central axis;The equipment main body is also provided with a plurality of polishing heads, the generatrix shape of the outer periphery of a plurality of polishing heads is respectively matched with the contour of different parts of water meter. The position of the polishing head is fixedly arranged, the water meter shell is clamped by a plurality of clamping assemblies of rotary displacement mechanism, the water meter shell is rotated to different polishing heads by rotary displacement, the different parts of water meter shell are polished, after a plurality of displacement, the polishing of each surface of water meter can be completed, and the automatic polishing of water meter shell is realized.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment, and in particular to a grinding device and method for casting water meter housings. Background Technology

[0002] Water meters are widely used in construction and municipal engineering projects. Therefore, during the production stage, the metal casing of water meters is mostly manufactured using casting technology, followed by the later assembly of the internal structure and instrument components. After the water meter casing is cast, the casing blank needs to be ground and shaped. In particular, the mounting surface of the instrument, the threaded surfaces of the inlet and outlet require high surface precision. For other surfaces of the water meter casing, surface defects such as burrs, flash, and thick oxide scale also need to be repaired.

[0003] The shape of the water meter casing is as follows Figure 1 As shown, it includes a basically cylindrical main body with pipe openings on both sides of the outer circumference of the cylindrical main body. One end of the cylinder is open, serving as an installation window for the internal structure, and the meter is installed after the internal structure is installed. It is evident that the water meter casing has a highly irregular appearance.

[0004] Most existing grinding equipment is based on the principle of rotary grinding. For example, patent CN213439110U discloses a planetary gear mechanism that allows multiple grinding heads to revolve around a central point while each head also rotates on its own axis, improving the grinding effect on the object. However, it is evident that existing grinding equipment, represented by this patent, is mostly designed for grinding the inner and outer surfaces of circular workpieces. In water meter housings, the inner cavity can be ground using similar equipment. For the meter mounting surface, the water meter housing can be fixed with a clamp and then ground using a milling machine or grinding machine. However, for other irregular outer surfaces of the water meter housing, there is a lack of comprehensive and efficient grinding methods. Summary of the Invention

[0005] This invention addresses the problem of polishing the irregular outer surface of water meter housings by providing a polishing device for cast water meter housings.

[0006] To solve the above problems, the technical solution adopted by the present invention is a grinding device for casting water meter housings, comprising a main body of equipment, a lifting mechanism on the main body of equipment, a rotary positioning mechanism installed at the lifting end of the lifting mechanism, the rotary positioning mechanism rotating around a central axis, the rotary positioning mechanism including a plurality of clamping components for fixing and clamping the water meter housing, the clamping components being located at the lower end of the rotary positioning mechanism, the plurality of clamping components being evenly arranged around the central axis; the main body of equipment also has a plurality of grinding heads, the grinding heads being located below the rotary positioning mechanism, the plurality of grinding heads being arranged around the central axis, each grinding head being connected to a first drive motor, the rotation axis of the grinding head being arranged along the tangent direction of the rotation circle of the rotary positioning mechanism, and the generatrix shape of the outer circumferential surface of the plurality of grinding heads being adapted to the contour of different parts of the water meter. In this device, the grinding head is fixedly positioned, and the water meter housing is held by multiple clamping components of a rotary positioning mechanism. The water meter housing is rotated to different grinding heads through rotational positioning, allowing for the grinding of different parts of the water meter housing. After multiple positioning operations, the grinding of all surfaces of the water meter is completed, achieving automatic grinding of the water meter housing. This solution can simultaneously grind multiple water meter housings in different areas, completing the processing of all parts of multiple water meters in a single cycle, significantly reducing the grinding time per unit and adapting to the needs of large-scale production.

[0007] As a preferred embodiment of a grinding device for cast water meter housings, the rotary positioning mechanism includes a fixed base mounted on the lifting end of the lifting mechanism. A second drive motor is mounted on the main body of the device, and a drive gear is mounted on the output shaft of the second drive motor. Multiple planetary gears are arranged around the outer periphery of the drive gear, meshing with the drive gear. A cage is mounted on all the planetary gears, and the center of the cage is rotatably connected to the output shaft of the second drive motor. An internal gear ring is also provided around the outer periphery of the planetary gears, meshing with the internal gear ring. A connecting shaft is located at the center of the planetary gears, and the clamping assembly is located at the lower end of the connecting shaft. This planetary gear transmission structure achieves dual motion of revolution and rotation. On one hand, the cage drives the planetary gears to revolve around the drive gear, completing the position switching of the water meter housing between different grinding heads. On the other hand, the planetary gears mesh with the internal gear ring to achieve rotation, adjusting the grinding angle of the water meter housing to ensure no grinding dead angles in the complex internal structure of the water meter, improving the overall grinding coverage. Compared with a single rotary structure, this further optimizes the grinding accuracy and coverage.

[0008] As a preferred embodiment of a grinding device for cast water meter housings, the connecting shaft is a splined shaft, and the planetary gear has an internal splined hole at its center. The connecting shaft is slidably installed in the internal splined hole, and its upper end is rotatably connected to the cage. The internal gear ring is fixedly installed on the main body of the device, and the planetary gear and the internal gear ring are coplanar. The cooperation between the splined shaft and the internal splined hole ensures that the connecting shaft rotates synchronously with the planetary gear while allowing the connecting shaft to slide axially, adapting to the up-and-down movement requirements of the lifting mechanism. At the same time, the fixed installation of the internal gear ring ensures the stability of the planetary gear's rotation trajectory, avoiding angular deviations caused by transmission clearances, and further improving the grinding position accuracy. The rotatable connection between the upper end of the connecting shaft and the cage reduces structural sway during lifting, ensuring the stability of the water meter housing during up-and-down grinding and reducing the risk of grinding deviations caused by vibration.

[0009] As a preferred embodiment of a grinding device for cast water meter housings, the clamping assembly and the connecting shaft are hinged together via a rotating shaft, which is horizontally positioned. The hinged structure of the horizontal rotating shaft allows the clamping assembly to finely adjust its angle around the shaft. This automatically adapts to the curvature of water meters of different diameters, in conjunction with the contact pressure between the water meter housing and the grinding head during grinding. This ensures that the grinding head remains in close contact with the water meter surface, avoiding insufficient grinding in certain areas due to minor casting errors in the water meter housing, and improving grinding uniformity. It is particularly suitable for fine grinding of water meters with small openings and complex internal structures.

[0010] As a preferred embodiment of a grinding device for cast water meter housings, the clamping assembly includes a connecting plate on which two telescopic cylinders are mounted. The output shafts of the telescopic cylinders are arranged opposite each other, and clamping plates are mounted on the output shafts of the telescopic cylinders. The two clamping plates are coplanar and extend downward through the connecting plate. Arc-shaped notches are formed on the adjacent edges of the two clamping plates, and the arc-shaped notches on both sides meet to form a circle, serving to clamp the reduced-diameter portion of the water meter's mounting surface. The two telescopic cylinders drive the clamping plates to move towards or away from each other, ensuring the arc-shaped notches precisely fit the reduced-diameter portion of the water meter's mounting surface, preventing damage to the water meter housing surface during clamping, and ensuring uniform clamping force to prevent displacement of the water meter during grinding. The cylinder drive enables automatic clamping and releasing, and with manual or robotic arm loading and unloading at the feed port, the water meter does not need to be manually fixed, reducing manual intervention steps and improving overall work efficiency.

[0011] As a preferred embodiment of a grinding device for cast water meter housings, the main body of the equipment has water meter placement positions corresponding to the number of clamping components. Two rollers are installed in each water meter placement position, supporting the inlet and outlet pipes of the water meter respectively. The roller structure provides pre-support for the water meter housing, ensuring stable water meter posture during loading, facilitating precise positioning and clamping by the clamping components, and reducing subsequent grinding deviations caused by loading offset. Simultaneously, the rollers support the inlet and outlet pipes, preventing the water meter housing from directly contacting the equipment table surface and causing surface scratches, thus protecting the product's appearance quality. The correspondence between the placement positions and the number of clamping components enables a continuous operation process for loading, grinding, and unloading, improving equipment operational continuity and further optimizing production efficiency.

[0012] As a preferred embodiment of a grinding device for cast water meter housings, the lifting mechanism includes a mounting base fixedly mounted on the main body of the equipment. A lead screw is installed in the mounting base, and a fixed base is fixedly connected to the lead screw's nut seat. A third drive motor is also mounted on the mounting base, with a drive pulley mounted on the output shaft of the third drive motor. A driven pulley is mounted on one end of the lead screw, and a transmission belt is wound around both the drive pulley and the driven pulley. The lead screw drive offers higher lifting precision, accurately controlling the vertical movement distance of the rotary displacement mechanism to adapt to the depth requirements of different grinding areas, avoiding over- or under-grinding due to lifting errors. The pulley drive structure operates smoothly with low noise, reducing vibration interference during equipment operation and ensuring stable grinding. The modular design of the overall structure facilitates later maintenance and component replacement, reducing equipment operation and maintenance costs.

[0013] As a preferred embodiment of a grinding device for cast water meter housings, the mounting base has guide protrusions on both vertical surfaces, extending vertically. A guide plate is provided on the side of the fixed base facing the mounting base, and a guide groove is provided on the guide plate, with the guide protrusion located within the guide groove. The cooperation between the guide protrusion and the guide groove provides precise guidance for the vertical movement of the fixed base, preventing lateral shifting or rotation during lifting and ensuring that the rotary positioning mechanism always moves vertically, further improving grinding position accuracy. Simultaneously, the guide structure can share the radial force borne by the lead screw, reducing lead screw wear, extending equipment lifespan, and mitigating the risk of accuracy degradation after long-term use.

[0014] On the other hand, the present invention also provides a grinding method for casting water meter housings, comprising the following methods:

[0015] S1. Place multiple water meter housings in the set position of the grinding device, the lifting mechanism drives the rotary displacement mechanism to descend, and multiple clamping components clamp and fix the water meter housings.

[0016] S2. Multiple grinding heads are activated, and the lifting mechanism drives the rotary displacement mechanism to rise. During the rising process, different grinding heads grind different parts of the water meter housing at the corresponding positions.

[0017] S3. After the water meter housing rises past the grinding head, the rotary positioning mechanism rotates a certain angle, causing the water meter housing to exchange positions sequentially.

[0018] S4. The lifting mechanism drives the rotary displacement mechanism to descend, and each grinding head grinds the water meter housing at the current position. Then the lifting mechanism drives the rotary displacement mechanism to rise.

[0019] S5. Repeat steps S3 and S4 so that each water meter housing is polished at least once by all the polishing heads.

[0020] This method employs a cyclical process of lifting and rotating grinding combined with repositioning, allowing multiple water meter housings to be processed simultaneously. Compared to manual grinding of one housing at a time, this significantly increases the throughput per unit time, resolving production bottlenecks. Through multiple lifting and repositioning operations, it ensures that each water meter housing is processed by all grinding heads, covering all areas requiring grinding. This avoids blind spots that are easily missed during manual grinding, thus improving the product qualification rate.

[0021] Furthermore, in step S4, the lifting mechanism drives the rotary displacement mechanism to lift and lower multiple times, performing multiple grinding operations on the same part of the water meter housing. For parts requiring high grinding precision, repeated lifting and lowering can thoroughly remove stubborn burrs, avoiding the problem of incomplete grinding in a single operation. There is no need to increase the number of grinding heads; grinding quality can be improved simply by adjusting the process, reducing equipment modification costs. At the same time, the number of lifting and lowering operations can be flexibly set according to the grinding difficulty of different parts, balancing grinding quality and efficiency, and avoiding material waste caused by over-grinding.

[0022] As can be seen from the above technical solutions, the beneficial effects of the present invention are as follows: The device and method can effectively solve the problems of low efficiency, unstable quality, high personnel safety risks, and difficulty in adapting to multiple diameters in traditional manual grinding. Through the cooperation of the lifting mechanism and the rotary positioning mechanism on the main body of the equipment, multiple clamping components are used to simultaneously clamp multiple water meter shells. Combined with grinding heads arranged around the central axis and whose generatrix shape is adapted to different parts of the water meter, simultaneous automatic grinding of multiple water meters in different parts is achieved, which greatly shortens the grinding time of a single meter and breaks through the production bottleneck to adapt to the needs of large-scale production. The rotary positioning mechanism adopts planetary gear transmission to achieve a combination of rotation and revolution. With the cooperation of the sliding and rotation of the spline shaft, it ensures that the water meter shell is accurately switched between different grinding heads and the grinding angle is adjustable, avoiding grinding dead corners of complex internal structures and improving the comprehensiveness and positional accuracy of grinding. The clamping assembly, paired with a telescopic cylinder clamping structure featuring an arc-shaped notch, automatically adapts to the curvature and reduced diameter dimensions of water meters of different diameters, ensuring stable clamping without damaging the casing. This also reduces manual intervention. Combined with the water meter placement supported by rollers, it further improves feeding accuracy and operational continuity. The lifting mechanism, driven by a screw and pulley, along with the guiding action of guide protrusions and guide grooves, ensures precise and stable lifting movements with minimal vibration, reducing grinding deviations and extending equipment lifespan. The corresponding grinding method utilizes a cyclical process of lifting grinding and rotational repositioning to achieve simultaneous operation of multiple water meters and full-area grinding coverage. Furthermore, repeated lifting and grinding can precisely handle high-requirement areas, improving product qualification rates while reducing equipment modification costs and material waste. This completely eliminates the need for manual grinding, reducing occupational disease risks and enterprise costs. Attached Figure Description

[0023] To more clearly illustrate the technical solution of this patent, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this patent. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 Schematic diagram of the water meter casing Figure 1 .

[0025] Figure 2 Schematic diagram of the water meter casing Figure 2 .

[0026] Figure 3 This is a structural schematic diagram of a specific embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the lifting mechanism and the rotary displacement mechanism in a specific embodiment of the present invention. Figure 1 .

[0028] Figure 5This is a schematic diagram of the clamping component in a specific embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram showing the arrangement of the grinding head of the present invention.

[0030] Explanation of main figure symbols

[0031] 00. Central axis, 01. Bottom end face, 02. First threaded surface, 03. Second threaded surface, 04. Instrument mounting surface, 1. Equipment body, 2. Clamping assembly, 3. Grinding head, 31. First grinding head, 32. Second grinding head, 33. Third grinding head, 34. Fourth grinding head, 35. Fifth grinding head, 4. First drive motor, 5. Fixed seat, 6. Planetary gear, 7. Cage, 8. Internal gear ring, 9. Connecting shaft, 10. 11. Shaft, 12. Connecting plate, 13. Telescopic cylinder, 14. Clamping plate, 15. Idler roller, 16. Mounting base, 17. Lead screw, 18. Third drive motor, 19. Driving pulley, 20. Drive belt, 21. Second drive motor, 22. Guide protrusion, 23. Guide plate, 24. Lifting mechanism, 25. Rotary positioning mechanism, 26. Driving gear, 27. Water meter housing, 28. Internal spline hole, 29. Arc-shaped notch. Detailed Implementation

[0032] To make the objectives, features, and advantages of this patent more apparent and understandable, the technical solutions of this patent will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this patent, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0033] Example 1

[0034] like Figure 3-5 As shown, a grinding device for casting water meter housings includes a main body 1. The main body 1 is equipped with a lifting mechanism 24 and multiple grinding heads 3, and has water meter placement positions corresponding to the number of subsequent clamping components 2. The water meter placement positions are equipped with two rollers 14, which respectively support the inlet pipe and outlet pipe of the water meter. The roller structure can pre-support the water meter housing 27, ensuring the stability of the water meter posture during feeding, facilitating the precise positioning and clamping of the clamping components 2, reducing subsequent grinding deviations caused by feeding offset, and preventing the water meter housing 27 from directly contacting the equipment table surface and causing surface scratches, thus protecting the product's appearance quality. Furthermore, the placement positions correspond to the number of clamping components 2, enabling a continuous operation process of feeding, grinding, and unloading, improving the continuity of equipment operation and production efficiency.

[0035] The lifting mechanism 24 includes a mounting base 15, which is fixedly mounted on the main body 1 of the equipment. A lead screw 16 is mounted in the mounting base 15, and a third drive motor 17 is also mounted on the mounting base 15. A drive pulley 18 is mounted on the output shaft of the third drive motor 17. A driven pulley 19 is mounted on one end of the lead screw 16. A transmission belt 20 is mounted around both the drive pulley 18 and the driven pulley 19. The lead screw drive provides higher lifting precision, accurately controlling the vertical movement distance of the rotary displacement mechanism 25 to adapt to the depth requirements of different grinding areas, avoiding over- or under-grinding due to lifting errors. The pulley drive structure operates smoothly with low noise, reducing vibration interference during equipment operation and ensuring stable grinding. Simultaneously, guide protrusions 22 are provided on the vertical surfaces of both sides of the mounting base 15, extending vertically. A rotary positioning mechanism 25 is installed at the lifting end of the lifting mechanism 24. The rotary positioning mechanism 25 rotates around a central axis O0. The rotary positioning mechanism 25 includes a fixed seat 5 and multiple clamping components 2 for fixing and clamping the water meter housing 27. The fixed seat 5 is installed at the lifting end of the lifting mechanism 24 and is fixedly connected to the nut seat of the lead screw 16. The side of the fixed seat 5 facing the mounting seat 15 is provided with a guide plate 23. The guide plate 23 is provided with a guide groove. The guide protrusion 22 is located in the guide groove. The cooperation between the guide protrusion 22 and the guide groove can provide precise guidance for the up and down movement of the fixed seat 5, prevent the fixed seat 5 from shifting left and right or rotating during the lifting process, and ensure that the rotary positioning mechanism 25 always moves in the vertical direction, further improving the grinding position accuracy. At the same time, it can also share the radial force borne by the lead screw 16, reduce the wear of the lead screw 16, and extend the service life of the equipment.

[0036] The clamping assembly 2 is located at the lower end of the rotary displacement mechanism 25. Multiple clamping assemblies 2 are evenly arranged around the central axis O0. A second drive motor 21 is mounted on the main body 1. A drive gear 26 is mounted on the output shaft of the second drive motor 21. Multiple planetary gears 6 are arranged around the outer periphery of the drive gear 26. The planetary gears 6 mesh with the drive gear 26. Multiple planetary gears 6 are collectively mounted on a retainer 7. The center of the retainer 7 is rotatably connected to the output shaft of the second drive motor 21. The outer circumference of the wheel 6 is also provided with an internal gear ring 8, which is fixedly installed on the main body 1 of the equipment. The planetary gear 6 meshes with the internal gear ring 8 and is coplanar. The planetary gear transmission structure can realize dual motion of revolution and rotation. On the one hand, the planetary gear 6 is driven to revolve around the driving gear 26 through the cage 7, which completes the position switching of the water meter housing 27 between different grinding heads 3. On the other hand, the planetary gear 6 meshes with the internal gear ring 8 to realize rotation, which can adjust the grinding angle of the water meter housing 27, ensuring that there are no grinding dead corners in the complex internal structure of the water meter, and improving the comprehensiveness and accuracy of grinding.

[0037] The planetary gear 6 has an inner spline hole 28 at its center, and a connecting shaft 9 is installed in the inner spline hole 28. The connecting shaft 9 is a spline shaft that is slidably installed in the inner spline hole 28. The upper end of the connecting shaft 9 is rotatably connected to the retainer 7, and the lower end is provided with the clamping assembly 2. The cooperation between the spline shaft and the inner spline hole 28 ensures that the connecting shaft 9 rotates synchronously with the planetary gear 6, and also allows the connecting shaft 9 to slide along the axial direction, adapting to the up and down movement requirements of the lifting mechanism 24. At the same time, the inner gear ring 8 is fixedly set to ensure the stability of the rotation trajectory of the planetary gear 6 and avoid angular deviation caused by transmission clearance. The rotatable connection between the upper end of the connecting shaft 9 and the retainer 7 can also reduce structural shaking during lifting and lowering, ensuring the stability of the water meter housing 27 during up and down grinding and reducing the risk of grinding deviation caused by vibration.

[0038] The clamping assembly 2 and the connecting shaft 9 are hinged together via a horizontally arranged rotating shaft 10. This hinged structure allows the clamping assembly 2 to be finely adjusted around the rotating shaft 10. Combined with the contact pressure between the water meter housing 27 and the grinding head 3 during grinding, it can automatically adapt to the curvature of water meters of different diameters, ensuring that the grinding head 3 remains in close contact with the water meter surface. This avoids insufficient grinding in certain areas due to minor casting errors in the water meter housing 27, improving grinding uniformity. It is particularly suitable for fine grinding of water meters with small openings and complex internal structures. Furthermore, the clamping assembly 2 includes a connecting plate 11, on which two telescopic cylinders 12 are mounted. The output shafts of the telescopic cylinders 12 are arranged opposite to each other, and a [missing information - likely a device or component] is mounted on the output shaft of each telescopic cylinder 12. Clamping plates 13 are arranged on the same plane. The clamping plates 13 extend downward and pass through the connecting plate 11. The edges of the two clamping plates 13 that are close to each other are provided with arc-shaped notches 29. The arc-shaped notches 29 on both sides are joined to form a circle and are used to clamp the reduced diameter part of the instrument mounting surface of the water meter. Two telescopic cylinders 12 drive the clamping plates 13 to move towards or away from each other. The arc-shaped notches 29 can accurately fit the reduced diameter part of the instrument mounting surface of the water meter, avoiding damage to the surface of the water meter housing 27 during clamping. At the same time, it ensures uniform clamping force and prevents the water meter from shifting during grinding. The cylinder drive can also realize automatic clamping and releasing. With the manual or robotic arm loading and unloading at the loading port, there is no need to fix the water meter, reducing manual intervention steps and improving the overall operation efficiency.

[0039] The grinding head 3 is located below the rotary positioning mechanism 25. Multiple grinding heads 3 are arranged around the central axis O0. Each grinding head 3 is connected to a first drive motor 4. The rotation axis of the grinding head 3 is arranged along the tangent direction of the rotation circle of the rotary positioning mechanism 25. The generatrix shape of the outer circumference of the multiple grinding heads 3 is adapted to the contour of different parts of the water meter. With the synergistic effect of the above structures, multiple clamping components 2 can be used to simultaneously clamp multiple water meter housings 27. Through the cooperation of the rotary positioning mechanism 25 and the lifting mechanism 24, the water meter housing 27 is rotated to different grinding heads 3 for partial grinding, realizing simultaneous automatic grinding of multiple water meters, greatly shortening the grinding time of a single meter, breaking through the efficiency bottleneck of traditional manual grinding, adapting to the needs of large-scale production, and completely eliminating the dependence on manual grinding, reducing the risk of operator fatigue and injury, dust inhalation, and occupational disease incidence and enterprise labor costs. Furthermore, through the adaptability of each structure to multi-diameter water meters, it can solve the problems of low efficiency of manual switching and difficulty in adapting to flexible production, and improve the product qualification rate.

[0040] Example 2

[0041] Based on the grinding apparatus provided in Embodiment 1, the present invention further provides a grinding method for casting water meter housings, comprising the following methods:

[0042] S1. Place multiple water meter housings 27 in the set position of the grinding device, and drive the lifting mechanism 24 to lower the rotary displacement mechanism 25. Multiple clamping components clamp and fix the water meter housings 27.

[0043] S2. Multiple grinding heads 3 are activated, and the lifting mechanism 24 drives the rotary displacement mechanism 25 to rise. During the rising process, different grinding heads 3 grind different parts of the water meter housing 27 at corresponding positions.

[0044] S3. After the water meter housing 27 rises past the grinding head 3, the rotary positioning mechanism 25 rotates at a certain angle, causing the water meter housing 27 to exchange positions in sequence.

[0045] S4. The lifting mechanism 24 drives the rotary displacement mechanism 25 to descend, and each grinding head 3 grinds the water meter housing 27 at the current position. Then the lifting mechanism 24 drives the rotary displacement mechanism 25 to rise.

[0046] S5. Repeat steps S3 and S4 so that each water meter housing 27 is polished at least once by all the polishing heads 3.

[0047] In step S4, the lifting mechanism 24 drives the rotary displacement mechanism 25 to lift and lower multiple times, and polishes the same part of the water meter housing 27 multiple times.

[0048] by Figure 6As shown in the example, the grinding head includes a first grinding head 31, a second grinding head 32, a third grinding head 33, a fourth grinding head 34, and a fifth grinding head 35. The first grinding head 31 corresponds to the bottom end face 01 of the water meter housing 27, the first threaded machining surface 02 of the water inlet, and the second threaded machining surface 03 of the water outlet. The second grinding head 32 corresponds to the instrument mounting surface 04. The third grinding head 33 is located between the two water meter housings 27 and is used to grind the end face of the water inlet of one of the two water meter housings 27 and the end face of the water outlet of the other. The fourth grinding head 34 has the same function as the third grinding head 33, and performs secondary grinding on the end face of the water inlet and the end face of the water outlet. The fifth grinding head 35 performs secondary grinding on the instrument mounting surface.

[0049] As can be seen from the above technical solutions, the advantages of this invention are that the device and method can effectively solve the problems of low efficiency, unstable quality, high personnel safety risks, and difficulty in adapting to multiple diameters in traditional manual grinding. Through the cooperation of the lifting mechanism and the rotary positioning mechanism on the main body of the equipment, multiple clamping components are used to simultaneously clamp multiple water meter housings. Combined with grinding heads arranged around the central axis and whose generatrix shape adapts to different parts of the water meter, simultaneous automatic grinding of multiple water meters in different parts is achieved, significantly shortening the grinding time per unit and breaking through production bottlenecks to meet large-scale needs. The rotary positioning mechanism uses planetary gear transmission to achieve a combination of rotation and revolution, and with the synergistic effect of the sliding and rotation of the spline shaft, it ensures precise switching of the water meter housing between different grinding heads and adjustable grinding angles, avoiding grinding dead angles in complex internal structures and improving the comprehensiveness and positional accuracy of grinding. The horizontal hinge... The clamping assembly, paired with a telescopic cylinder clamping structure featuring an arc-shaped notch, automatically adapts to the curvature and reduced diameter dimensions of water meters of different diameters, ensuring stable clamping without damaging the casing. This also reduces manual intervention. Combined with the water meter placement supported by rollers, it further improves feeding accuracy and operational continuity. The lifting mechanism, driven by a screw and pulley, along with the guiding action of guide protrusions and guide grooves, ensures precise and stable lifting movements with minimal vibration, reducing grinding deviations and extending equipment lifespan. The corresponding grinding method utilizes a cyclical process of lifting grinding and rotational repositioning to achieve simultaneous operation of multiple water meters and full-area grinding coverage. Furthermore, repeated lifting and grinding can precisely handle high-requirement areas, improving product qualification rates while reducing equipment modification costs and material waste. This completely eliminates the need for manual grinding, reducing occupational disease risks and enterprise costs.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use this patent. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this patent. Therefore, this patent is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grinding device for casting water meter housings, comprising a main body (1), characterized in that, The main body (1) of the equipment is provided with a lifting mechanism (24). The lifting end of the lifting mechanism (24) is equipped with a rotational displacement mechanism (25). The rotational displacement mechanism (25) rotates around a central axis (00). The rotational displacement mechanism (25) includes a plurality of clamping components (2) for fixing and clamping the water meter housing. The clamping components (2) are located at the lower end of the rotational displacement mechanism (25). The plurality of clamping components (2) are evenly arranged around the central axis (00). The main body (1) of the equipment is also provided with a plurality of grinding heads (3). The grinding heads (3) are located below the rotary displacement mechanism (25). The plurality of grinding heads (3) are arranged around the central axis (00). The grinding heads (3) are respectively connected to the first drive motor (4). The rotation axis of the grinding heads (3) is arranged along the tangent direction of the rotation circle of the rotary displacement mechanism (25). The generatrix shape of the outer peripheral surface of the plurality of grinding heads (3) is adapted to the contour of different parts of the water meter housing (27). The rotary displacement mechanism (25) includes a fixed base (5), which is installed on the lifting end of the lifting mechanism (24). A second drive motor (21) is installed on the main body (1). A drive gear (26) is installed on the output shaft of the second drive motor (21). Multiple planetary gears (6) are provided on the outer periphery of the drive gear (26). The planetary gears (6) mesh with the drive gear (26). The multiple planetary gears (6) are jointly mounted on a retainer (7). The center of the retainer (7) is rotatably connected to the output shaft of the second drive motor (21). An internal gear ring (8) is also provided on the outer periphery of the planetary gears (6). The planetary gears (6) mesh with the drive gear (26). The internal gear ring (8) meshes with the planetary gear (6), and a connecting shaft (9) is provided at the center of the planetary gear (6). The clamping assembly (2) is located at the lower end of the connecting shaft (9). The connecting shaft (9) is a spline shaft. An internal spline hole (28) is provided at the center of the planetary gear (6). The connecting shaft (9) is slidably installed in the internal spline hole (28). The upper end of the connecting shaft (9) is rotatably connected to the cage (7). The internal gear ring (8) is fixedly installed on the main body of the equipment (1). The planetary gear (6) and the internal gear ring (8) are coplanar. The clamping assembly (2) and the connecting shaft (9) are hinged together by a rotating shaft (10). The rotating shaft (10) is horizontally arranged. The main body (1) of the equipment is provided with a water meter placement position corresponding to the number of clamping components (2). The water meter placement position is provided with two rollers (14), which can support the water inlet pipe and the water outlet pipe of the water meter housing (27) respectively.

2. The grinding device for casting water meter housings according to claim 1, characterized in that, The clamping assembly (2) includes a connecting plate (11), on which two telescopic cylinders (12) are mounted. The output shafts of the telescopic cylinders (12) are arranged opposite to each other. A clamping plate (13) is mounted on the output shaft of the telescopic cylinders (12). The two clamping plates (13) are arranged on the same plane. The clamping plates (13) extend downward and pass through the connecting plate (11). The edges of the two clamping plates (13) that are close to each other are provided with arc-shaped notches (29). The arc-shaped notches (29) on both sides are joined to form a circle and are used to clamp the reduced diameter part of the instrument mounting surface of the water meter housing (27).

3. The grinding device for casting water meter housings according to claim 1, characterized in that, The lifting mechanism (24) includes a mounting base (15), which is fixedly mounted on the main body (1) of the equipment. A lead screw (16) is installed in the mounting base (15), and the fixed base (5) is fixedly connected to the lead screw (16) nut seat. A third drive motor (17) is also provided on the mounting base (15). A drive pulley (18) is installed on the output shaft of the third drive motor (17), and a driven pulley (19) is installed at one end of the lead screw (16). A transmission belt (20) is installed around the drive pulley (18) and the driven pulley (19).

4. The grinding device for casting water meter housings according to claim 3, characterized in that, The mounting base (15) has guide protrusions (22) on both vertical surfaces. The guide protrusions (22) extend in the vertical direction. The fixing base (5) has a guide plate (23) on the side facing the mounting base (15). The guide plate (23) has a guide groove. The guide protrusions (22) are located in the guide groove.

5. A grinding method for casting water meter housings, characterized in that, The grinding device for casting water meter housings as described in any one of claims 1-4 includes the following grinding methods: S1. Place multiple water meter housings (27) in the set position of the grinding device, and drive the lifting mechanism (24) to lower the rotation displacement mechanism (25). Multiple clamping components (2) clamp and fix the water meter housings (27). S2. Multiple grinding heads (3) are started, and the lifting mechanism (24) drives the rotary displacement mechanism (25) to rise. During the rising process, different grinding heads (3) grind different parts of the water meter housing (27) at the corresponding positions. S3. After the water meter housing rises past the grinding head (3), the rotary displacement mechanism (25) rotates at a certain angle, causing the water meter housing (27) to exchange positions in sequence; S4. The lifting mechanism (24) drives the rotary displacement mechanism (25) to descend, and each grinding head (3) grinds the water meter housing (27) at the current position. Then the lifting mechanism (24) drives the rotary displacement mechanism (25) to rise. S5. Repeat steps S3 and S4 so that each water meter housing (27) is polished at least once by all the polishing heads (3).

6. The grinding method for casting water meter housings according to claim 5, characterized in that, In step S4, the lifting mechanism (24) drives the rotary displacement mechanism (25) to lift and lower multiple times, and polishes the same part of the water meter housing (27) multiple times.

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