Multi-functional water meter shell polishing machine

Abstract

The utility model provides a kind of multifunctional water meter shell grinding machine, a kind of multifunctional water meter shell grinding machine, the machine tool includes shell, rotary table, turnover seat and push cylinder. Among them, the workbench in shell can be accurately controlled transverse and longitudinal displacement by numerical control system, the rotary table supported thereon is provided with rotating seat with accommodating groove and turnover seat driving swing arm, and water meter shell is pressed on the rotating seat on rotary table by swing arm swing to ejector pin, can realize single clamping, i.e. complete exposure water meter shell outer peripheral curved surface, two end interface plane, instrument mouth plane and interface inner and outer annular surface etc. All areas to be processed, avoid repeated positioning operation in grinding process. In grinding stage, numerical control system pre-plans the moving path of water meter shell according to water meter shell three-dimensional model, controls the continuous polishing of curved surface edge by grinding bar, drilling of instrument mouth side by drill bit and end face grinding by grinding disc etc. Can be completed at one time, is favorable to improve the grinding accuracy and efficiency of water meter shell.

Description

Technical Field

[0001] This utility model relates to the field of water meter casing grinding technology, and in particular to a multifunctional water meter casing grinding machine. Background Technology

[0002] After the water meter casing is cast, its surface needs to be ground to remove burrs. Currently, the grinding of burrs on the surface of water meter casings generally adopts a multi-station segmented processing mode. In the clamping and positioning stage, the workpiece is often fixed by a three-jaw chuck or vacuum suction cup, supplemented by multiple manual adjustments to ensure that each processing surface is exposed. The processing of key areas such as the outer peripheral curved surface, end face interface and instrument port needs to be completed on different machines. For example, a special curved surface grinder is used to process the edge burrs, and then the machine is transferred to a drilling machine to drill holes on the side of the instrument port. Finally, the end face sealing plane is processed on a surface grinder.

[0003] However, the aforementioned existing technologies are prone to reference drift during the transfer of water meter housings between multiple devices or during repeated positioning of a single machine. This makes it difficult to guarantee the relative positional accuracy of the circumferential curved surface of the water meter housing with the end face and the side of the instrument port. In particular, when the cumulative positioning error is generated by multiple clamping, it will directly cause a series of process defects such as misalignment of the continuous grinding trajectory of the curved surface, skewed drilling of the instrument port, and uneven sealing plane of the end face, which seriously restricts the product qualification rate and production line efficiency. Utility Model Content

[0004] To address the shortcomings mentioned above in the background technology, this utility model provides a multifunctional water meter casing grinding machine.

[0005] The present invention adopts the following technical solution: A multi-functional water meter casing grinding machine tool, the machine tool comprising: The housing contains a column and a worktable that moves horizontally and vertically relative to the column. The column is equipped with a first motor and a second motor with their output shafts facing downwards. The output shaft of the first motor is connected to a grinding rod, and the output shaft of the second motor is connected to a drill bit. A rotatable grinding disc is provided on the front of the column. A rotary table is fixed to the worktable, and a rotating seat is fixed on the rotating shaft of the rotary table. A recessed receiving groove is formed in the rotating seat. The water meter shell to be polished is embedded in the receiving groove, so that the joints at both ends of the water meter shell extend to the outside of both ends of the rotating seat, and the instrument opening of the water meter shell extends to the outside of the side of the rotating seat. A flip-up seat is fixed to the workbench, and a flip-up swing arm is provided on the flip-up seat. A rotatable pin is provided at the end of the swing arm. When the swing arm flips down to press against the rotating seat, the pin presses against the surface of the water meter housing on the rotating seat.

[0006] In one possible implementation, a discharge port is provided on one side of the housing, and a discharge hopper is also provided inside the housing at the discharge port. The upper end of the discharge hopper is close to the height of the rotary seat, and the lower end of the discharge hopper is connected to the discharge port. The machine tool also includes a push cylinder, which is fixed to the worktable and to the side of the rotary table facing away from the discharge hopper. The piston rod of the push cylinder moves vertically, and a push plate is fixed to the upper end of the piston rod. When the rotary seat rotates to the position where the instrument opening of the water meter housing faces the push cylinder, the push plate extends to below the instrument opening of the water meter housing.

[0007] In one possible implementation, a bearing is fitted at the end of the swing arm, and the upper end of the ejector pin is fixed to the inner ring of the bearing.

[0008] In one possible implementation, a third motor is fixed above the column, a rotatable connecting shaft is provided on the front of the column, one end of the connecting shaft extends to the outside of the column to fix the grinding disc, and the other end of the connecting shaft is connected to the third motor for transmission.

[0009] In one possible implementation, a fourth motor is also provided on one side of the column, the output shaft of the fourth motor is horizontally facing the front of the housing, and the output shaft of the fourth motor is connected to a milling cutter.

[0010] In one possible implementation, a lifting cylinder is also fixed above the column, the piston rod of the lifting cylinder is fixed to the lifting seat, and the first motor is fixed to the lifting seat.

[0011] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: the embedded positioning structure that presses the water meter shell into the receiving groove by the swing arm, combined with the spatial layout of the water meter shell's two end joints extending to the two ends of the rotating seat and the instrument opening extending to the side of the rotating seat, realizes that the outer peripheral curved surface of the water meter shell, the two end interface planes, the instrument opening plane and the inner and outer ring surfaces of the interface, and all the areas waiting to be processed can be completely exposed in a single clamping, avoiding repeated positioning operations during the grinding process, ensuring that the grinding rod continuously grinds the curved edge, the drill bit drills the water meter shell, and the grinding disc processes the water meter shell's end face in one go. Compared with the processing method of frequently transferring the water meter shell, it is beneficial to improve the grinding accuracy and efficiency of the water meter shell. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 for Figure 1 A diagram showing the product after the outer shell has been hidden.

[0014] Figure 3 for Figure 2 The structure in relative Figure 1 A schematic diagram of the three-dimensional structure from the other side of the view.

[0015] Figure 4 This is a side view of the present invention after the outer shell is hidden.

[0016] Figure 5 A three-dimensional structural diagram showing a platform set on a pre-approved workbench, with a rotary table, a tilting seat, and a pusher cylinder mounted on that platform.

[0017] Figure 6 This is a schematic diagram showing the workbench moving closer to the unloading hopper.

[0018] Figure 7 for Figure 6 A magnified diagram of point A in the middle.

[0019] Figure 8 This is a schematic diagram of the cross-sectional structure of the outer fixed tool sleeve of the milling cutter. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0021] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0022] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0023] This utility model provides a multifunctional water meter casing grinding machine tool, which can achieve efficient and integrated processing of water meter casings. (See attached image) Figures 1 to 4As shown, the machine tool includes a housing 1, a rotary table 2, a tilting base 3, and a pusher cylinder 4. A fixed column 11 is located inside the housing 1. A first motor 13 and a second motor 14 with their output shafts facing downwards are mounted on the column 11. The output shaft of the first motor 13 is connected to a grinding rod 131, and the output shaft of the second motor 14 is connected to a drill bit 141. A rotatable grinding disc 151 is mounted on the front of the column 11. A fourth motor 16 is also mounted on the side of the column 11, with its output shaft horizontally facing the front of the housing 1 and connected to a milling cutter 161. Furthermore, the grinding rod 131, drill bit 141, and milling cutter 161 can all be securely clamped using tool holders, improving machining reliability and versatility.

[0024] A third motor 15 is fixed above the column 11. A rotatable connecting shaft 152 is provided on the front of the column 11. Specifically, a bearing seat can be fixed inside the lower part of the column 11. The connecting shaft 152 passes through the bearing seat and is fixedly engaged with the bearing seat, thus constraining it to only rotate. One end of the connecting shaft 152 extends out of the column 11 to fix the grinding disc 151. The other end of the connecting shaft 152 is connected to the third motor 15 through belt drive or chain drive, etc. This transmission structure enables the third motor 15 to drive the grinding disc 151 to rotate at high speed, forming an efficient and uniform planar grinding of the water meter housing 5 attached to the surface of the grinding disc 151.

[0025] The outer casing 1 is also equipped with a worktable 12 for placing the water meter casing 5 to be polished. The worktable 12 is driven by two sets of independent lead screw mechanisms (not shown in the attached figure) to achieve horizontal and vertical movement relative to the column 11. Under the control of the CNC system configured in this utility model, the two sets of lead screw mechanisms form a precise X-axis and Y-axis linkage displacement, thereby driving the water meter casing 5 to move relative to each tool along the set path. The movement mechanism controlled by the CNC system ensures that the grinding rod 131 achieves high-precision burr grinding on the outer peripheral curved edge of the water meter casing 5. At the same time, it drives the drill bit 141 to accurately position it to a specific position on the surface of the water meter casing 5 to perform drilling operations. In conjunction with the grinding disc 151, it performs full-area grinding on the two end interface 51 planes and the front instrument port 52 plane of the water meter casing 5. It also works with the milling cutter 161 to perform reaming grinding on the inside of the two end interface 51 of the water meter casing 5. This can achieve the technical effect of multi-process integrated precision machining of the water meter casing 5.

[0026] Furthermore, a tool sleeve 162 is fixed to the outside of the milling cutter 161. A first cutting edge 1621 is fixed to the inner annular surface of the tool sleeve 162, and a second cutting edge 1622 is fixed to the bottom surface inside the tool sleeve 162. During the high-speed rotation of the milling cutter 161, when the water meter housing 5 moves to the interface 51 and is fitted onto the outside of the milling cutter 161, the milling cutter 161 simultaneously reams and grinds the inner wall of the interface 51. Simultaneously, the first cutting edge 1611 inside the tool sleeve 162 grinds the outer annular surface of the interface 51 of the water meter housing 5, and the second cutting edge 1622 inside the tool sleeve 162 simultaneously mills the end face of the interface 51 of the water meter housing 5 to form an annular groove for embedding an O-ring seal. This structure achieves simultaneous integrated machining of the inner wall, outer annular surface, and end face of the interface 51 of the water meter housing 5, significantly improving machining efficiency.

[0027] The rotary table 2 can be a rotary worktable 12 structure with a rotary axis 21 in the prior art, and refer to the appendix. Figure 6 and 7 A rotating seat 22 is fixed on the rotating shaft 21 of the rotary table 2. A recessed receiving groove 201 is formed in the rotating seat 22. The water meter housing 5 to be ground is embedded in the receiving groove 201, so that the joints at both ends of the water meter housing 5 extend to the outside of both ends of the rotating seat 22, and the instrument opening 52 of the water meter housing 5 extends to the outside of the side of the rotating seat 22. The rotary table 2 is fixed to the worktable 12, and the rotating shaft 21 is precisely controlled by a CNC system to realize multi-angle precise positioning and continuous rotation adjustment during the grinding process of the water meter housing 5.

[0028] As attached Figure 5 As shown, the tilting seat 3 is fixed to the worktable 12, and a tiltable swing arm 31 is connected to the tilting seat 3. A rotatable ejector pin 32 is provided at the end of the swing arm 31. Specifically, a swing motor 33 is fixed on the tilting seat 3. The output shaft of the swing motor 33 is fixed to the swing arm 31, and the swing motor 33 is controlled by the control system to realize the digital and automated control of the tilting of the swing arm 31 and the ejector pin 32 relative to the rotary table 2. The ejector pin 32 can be set by embedding a bearing at the end of the swing arm 31, and fixing the upper end of the ejector pin 32 to the inner ring of the bearing. When the swing arm 31 tilts downward to press against the rotary seat 22, the ejector pin 32 presses against the surface of the water meter housing 5 on the rotary seat 22 to restrict the water meter housing 5 to the rotary seat 22 to prevent it from jumping out during the grinding process. At the same time, relying on the characteristic that the ejector pin 32 can rotate freely with the inner ring of the bearing, it is ensured that the ejector pin 32 moves synchronously without friction interference when the rotary table 2 drives the water meter housing 5 to rotate for processing, thereby ensuring the continuous stability and processing accuracy of the rotary grinding process.

[0029] The above structure uses the swing arm 31 to press the water meter shell 5 into the embedded positioning structure of the receiving groove 201. Combined with the spatial layout where the connectors at both ends of the water meter shell 5 extend to the outside of both ends of the rotating seat 22 and the instrument port 52 extends out of the side of the rotating seat 22, it can completely expose all the areas to be processed, such as the outer peripheral curved surface of the water meter shell 5, the plane of the two end interfaces 51, the plane of the instrument port 52, and the inner and outer ring surfaces of the interfaces 51, in a single clamping. This avoids repeated positioning operations during the grinding process and ensures that the continuous grinding of the curved surface edge by the grinding rod 131, the drilling of the side of the instrument port 52 by the drill bit 141, and the end face processing by the grinding disc 151 can be completed in one go, significantly improving the processing accuracy and efficiency.

[0030] In addition, the first motor 13 is fixed to the lifting seat 171 located on the front of the column 11. Slide rails are fixed on both sides of the upper part of the front of the column 11, and both slide rails are adapted to connect slidable sliders. The lifting seat 171 is fixed to the sliders, allowing the first motor 13 to stably rise and fall relative to the worktable 12 and the rotary table 2 on the front of the column 11, thereby driving the grinding rod 131 to stably rise and fall relative to the water meter housing 5. A lifting cylinder 17 is also fixed above the column 11, with the piston rod of the lifting cylinder 17 fixed to the lifting seat 171, and the first motor 13 fixed to the lifting seat 171. Preferably, a notch is provided on the front of the column 11 between the two slide rails, and one end of the connecting seat passes through the notch to the inside of the column 11 and connects and fixes to the piston rod of the lifting cylinder 17. The lifting cylinder 17 can be an electric push plate 41, and the CNC system controls the operation of the lifting cylinder 17 to achieve digital automatic control of the lifting of the grinding rod 131. Specifically, based on the three-dimensional model of the water meter casing 5 and the machining process parameters, the CNC system pre-embeds the avoidance command of the interference area of ​​the swing arm 31 during the movement path planning stage of the grinding rod 131. When the grinding rod 131 passes through the space area where the swing arm 31 is located according to the programmed path, the CNC system drives the lifting cylinder 17 to perform a lifting action in real time so that the grinding rod 131 accurately avoids the physical structure of the swing arm 31. After passing the interference area, the lifting cylinder 17 is immediately controlled to descend and reset so that the grinding rod 131 continues to perform surface grinding along the predetermined trajectory. This programmed obstacle avoidance mechanism completely avoids the risk of physical collision, ensures the continuous grinding process of multiple processes without interruption, and at the same time ensures the optimization of grinding path control accuracy and grinding efficiency.

[0031] In addition, as attached Figure 1 , 6As shown in Figure 7, a discharge port 101 is provided on one side of the outer casing 1, and a discharge hopper 18 is also provided inside the outer casing 1 at the discharge port 101. The upper end of the discharge hopper 18 is close to the height of the rotating seat 22, and the lower end of the discharge hopper 18 is connected to the discharge port 101. The push cylinder 4 is fixed to the worktable 12, and the push cylinder 4 is also fixed to the side of the rotary table 2 facing away from the discharge hopper 18. The piston rod of the push cylinder 4 moves vertically, and the upper end of the piston rod of the push cylinder 4 is fixed with a push plate 41. When the rotating seat 22 rotates to the point where the instrument port 52 of the water meter housing 5 faces the push cylinder 4, the push plate 41 extends to below the instrument port 52 of the water meter housing 5. The push cylinder 4 adopts a cylinder structure and is integrated and controlled by a CNC system. After the water meter housing 5 is polished, the CNC system executes a three-step linkage unloading procedure: first, the worktable 12 is driven to move to the corresponding position of the unloading hopper 18; second, the control system commands the swing arm 31 to flip up to release the constraint; and finally, the piston rod of the push cylinder 4 is triggered to rise and push the push plate 41 to push the end of the instrument port 52 of the water meter housing 5, so that the water meter housing 5 is lifted and slid into the unloading hopper 18, realizing fully automated unloading.

[0032] Preferably, the worktable 12 can be fixed with a platform 6 for placing workpieces in a CNC grinding machine tool, as described in the application filed by the applicant on December 1, 2023, with application number 202323270919.6. The rotary table 2, the tilting seat 3, and the push cylinder 4 are all fixed on the platform 6, so that the water meter housing 5 has a reverse buffer movement stroke during the grinding process, thereby slightly changing the movement path of the water meter housing 5, so that the larger burrs on the surface of the water meter housing 5 can avoid the tool, and avoid the tool from breaking due to direct and forced grinding of the larger burrs.

[0033] In summary, this utility model provides a CNC integrated multi-functional water meter casing 5 grinding machine. A fixed column 11 is installed inside the casing 1. A first motor 13 and a second motor 14 with their output shafts facing downwards are mounted on the upper part of the column 11. The output shaft of the first motor 13 is connected to a grinding rod 131, and the output shaft of the second motor 14 is connected to a drill bit 141. A fourth motor 16 is mounted on the side of the column 11, with its output shaft horizontally facing the front of the casing 1 and connected to a milling cutter 161. These three motors, together with the rotatable grinding disc 151 on the front of the column 11, constitute a multi-tool collaborative grinding system. The worktable 12 can be precisely controlled for lateral and longitudinal displacement via a CNC system. A rotary table 2 supported on the worktable 12 is equipped with a rotating seat 22 with a receiving groove 201. Simultaneously, a tilting seat 3 supported on the worktable 12 is connected to a tiltable swing arm 31. A rotatable ejector pin 32 is installed at the end of the swing arm 31 to press and secure the water meter casing 5 while allowing the water meter casing 5 to rotate freely. During the grinding stage, the CNC system pre-plans the movement path of the water meter housing 5 based on the three-dimensional model of the water meter housing 5, and synchronously controls the lifting cylinder 17 to perform the lifting action of the grinding rod 131 to achieve precise obstacle avoidance and ensure continuous operation of the grinding operation. After the water meter housing 5 completes the four processes of curved surface grinding, drilling, end face grinding and reaming, the CNC system coordinates the worktable 12 to be positioned to the unloading hopper 18, controls the swing arm 31 to flip up and triggers the push cylinder 4 to push the push plate 41 to lift the instrument port 52, so that the water meter housing 5 slides into the unloading hopper 18 at the unloading port 101 of the outer shell 1, realizing the whole process of digital precision operation from positioning of the water meter housing 5, multi-tool collaborative grinding to automatic unloading.

[0034] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A multifunctional water meter casing grinding machine, characterized in that, The machine tool includes: The housing contains a column and a worktable that moves horizontally and vertically relative to the column. The column is equipped with a first motor and a second motor with their output shafts facing downwards. The output shaft of the first motor is connected to a grinding rod, and the output shaft of the second motor is connected to a drill bit. A rotatable grinding disc is provided on the front of the column. A rotary table is fixed to the worktable, and a rotating seat is fixed on the rotating shaft of the rotary table. A recessed receiving groove is formed in the rotating seat. The water meter shell to be polished is embedded in the receiving groove, so that the joints at both ends of the water meter shell extend to the outside of both ends of the rotating seat, and the instrument opening of the water meter shell extends to the outside of the side of the rotating seat. A flip-up seat is fixed to the workbench, and a flip-up swing arm is provided on the flip-up seat. A rotatable pin is provided at the end of the swing arm. When the swing arm flips down to press against the rotating seat, the pin presses against the surface of the water meter housing on the rotating seat.

2. The machine tool as described in claim 1, characterized in that, A discharge port is provided on one side of the outer casing, and a discharge hopper is also provided inside the outer casing at the discharge port. The upper end of the discharge hopper is close to the height of the rotary seat, and the lower end of the discharge hopper is connected to the discharge port. The machine tool also includes a push cylinder, which is fixed to the worktable and to the side of the rotary table facing away from the discharge hopper. The piston rod of the push cylinder moves vertically, and a push plate is fixed to the upper end of the piston rod. When the rotary seat rotates to the point where the instrument port of the water meter housing faces the push cylinder, the push plate extends to below the instrument port of the water meter housing.

3. The machine tool as described in claim 1, characterized in that, The end of the swing arm is fitted with a bearing, and the upper end of the ejector pin is fixed to the inner ring of the bearing.

4. The machine tool as described in claim 1, characterized in that, A third motor is fixed above the column, and a rotatable connecting shaft is provided on the front of the column. One end of the connecting shaft extends to the outside of the column to fix the grinding disc, and the other end of the connecting shaft is connected to the third motor for transmission.

5. The machine tool as described in claim 1, characterized in that, A fourth motor is also provided on one side of the column. The output shaft of the fourth motor faces horizontally toward the front of the housing, and the output shaft of the fourth motor is connected to a milling cutter.

6. The machine tool as described in claim 1, characterized in that, A lifting cylinder is also fixed above the column, and the piston rod of the lifting cylinder is fixed to the lifting seat. The first motor is fixed to the lifting seat.

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