Valve ball sphere lathe

Abstract

The utility model belongs to valve ball technical field especially relates to a valve ball spherical surface lathe, include: base, be provided with mounting seat on the base, the side of mounting seat is provided with the mounting groove, be provided with the clamping cylinder structure in the mounting groove, the one side of clamping cylinder structure swing penetrates mounting seat and extends to the top of mounting seat, is used for clamping the workpiece of processing, can fix the valve ball workpiece of processing through the clamping cylinder structure that sets up in the mounting groove, the meshing cooperation of worm wheel and worm wheel rotation drive structure, can realize the rotation of arc track through the rotation of worm wheel rotation drive structure and drive the bottom plate and second support, again through the up-and-down movement of mounting plate that setting drives the device, can let the polishing structure adapt to the spherical surface radian of different size valve ball, realizes the track adjustable from rough grinding to fine grinding.

Description

Technical Field

[0001] This utility model belongs to the field of valve ball technology, and in particular relates to a valve ball spherical lathe. Background Technology

[0002] A ball valve lathe is a high-precision, high-efficiency specialized machine tool used to machine the core component of ball valves—the "valve ball." Its main task is to precisely cut a metal blank (usually steel, stainless steel, copper, etc.) into a perfect sphere, achieving the required surface finish and dimensional accuracy. The valve ball is the "heart" of the ball valve; it is a sphere with a central through-hole. Rotating it 90 degrees opens or closes the pipeline. When the through-hole of the valve ball aligns with the pipeline, fluid flows through; when the valve ball rotates 90 degrees, its spherical surface fits tightly against the valve seat, cutting off the fluid flow. Therefore, the roundness (spherical accuracy), surface finish, and hardness of the valve ball are crucial. Any minute imperfection can cause the valve to not close tightly, resulting in leakage.

[0003] In existing technologies, valve ball grinding mostly uses fixed trajectory grinding heads. The movement path of the grinding head is preset by the mechanical structure of the equipment, which can only adapt to the spherical curvature of a single specification of valve ball. When it is necessary to process valve balls with different diameters and curvatures, it is necessary to disassemble and replace core components such as grinding head support and transmission gears. The adjustment cycle is long and the operation is complex, which seriously affects the efficiency of mass production. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned technical problems. This utility model provides a valve ball spherical lathe, comprising: a base, on which a mounting seat is provided, a mounting groove is provided on one side of the mounting seat, a clamping cylinder structure is provided in the mounting groove, and one side of the clamping cylinder structure extends movably through the mounting seat to the top of the mounting seat for clamping the workpiece to be processed. A first bracket is provided on the base. A rotating rod is rotatably provided on one side of the first bracket. A worm gear is provided on the outer periphery of the rotating rod. A worm gear rotation drive structure is provided on one side of the mounting base. The worm gear rotation drive structure is meshed with the worm gear. A base plate is provided on the top of the worm gear. A second bracket is provided on the base plate. A mounting plate is mounted on the second bracket through a lifting drive device. A connecting plate is provided on one side of the mounting plate. One end of the connecting plate extends above the clamping cylinder structure. A grinding structure is provided on the side of the connecting plate near the placement groove for grinding the workpiece clamped on the clamping cylinder structure.

[0005] Preferably, the worm gear is semi-circular.

[0006] Preferably, the worm gear rotation drive structure includes a support plate disposed on one side of the mounting base, a worm gear rotatably disposed on the support plate, a first rotary motor disposed on one side of the mounting base, and the drive end of the first rotary motor being connected to the worm gear through a belt pulley transmission structure.

[0007] Preferably, the grinding structure includes a second rotary motor mounted on the mounting plate, and a grinding head is provided on the side of the connecting plate near the placement slot. The second rotary motor is connected to the grinding head through a belt pulley transmission structure.

[0008] Preferably, the clamping cylinder structure includes a clamping cylinder disposed in a mounting groove, one side of the clamping cylinder extending movably through the mounting base to one side of the mounting base, a placement groove being provided on one side of the clamping cylinder, an inner cavity being provided inside the clamping cylinder, a plurality of clamping blocks being disposed in the placement groove, a connecting rod being connected to one side of the plurality of clamping blocks, and one end of the connecting rod extending movably through the placement groove into the inner cavity; Preferably, the mounting groove is provided with a movable structure, one end of which movably passes through and connects to a connecting rod in the inner cavity, for driving the connecting rod to move several clamping blocks along the placement groove so that the gap between the several clamping blocks shrinks.

[0009] Preferably, the placement groove is semi-circular, and all of the clamping blocks are integrally formed from spring steel.

[0010] Preferably, the movable structure includes a first cylinder disposed in the mounting groove, and the driving end of the first cylinder is provided with a guide rod, which movably passes through the clamping cylinder and is connected to the connecting rod.

[0011] Preferably, the second bracket includes two parallel columns spaced apart on the base plate, the lifting drive device is located on one side of the columns, and the two sides of the mounting plate are respectively connected to the lifting drive devices on the two columns.

[0012] Preferably, the lifting drive device includes an electric slide rail disposed on one side of one of the columns and a guide rail disposed on the other side of the column. One side of the mounting plate is fixedly connected to the slide table of the electric slide rail, and the other side is slidably connected to the guide rail.

[0013] Compared with the prior art, the valve ball spherical lathe described in this utility model has the following advantages: The clamping cylinder structure set in the mounting slot can fix the valve ball workpiece to be processed. The meshing of the worm gear and the worm gear rotation drive structure can drive the base plate and the second bracket to rotate in an arc trajectory through the rotation of the worm gear rotation drive structure. Then, the lifting drive device can drive the mounting plate to move up and down, so that the grinding structure can adapt to the spherical curvature of valve balls of different sizes, and the trajectory from rough grinding to fine grinding can be adjusted. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the worm gear of this utility model; Figure 3 This is a schematic diagram of the mounting slot of this utility model; Figure 4 This is a schematic diagram of the inside of the clamping cylinder of this utility model; The markings in the diagram are as follows: 1. Base; 2. Mounting seat; 3. Mounting slot; 4. Clamping cylinder; 5. Placement slot; 6. Inner cavity; 7. Clamping block; 8. First cylinder; 9. Guide rod; 10. First bracket; 11. Rotating rod; 12. Worm gear; 13. Base plate; 14. Second bracket; 15. Mounting plate; 16. Connecting plate; 17. Support plate; 18. Worm gear; 19. First rotary motor; 20. Second rotary motor; 21. Grinding head; 22. Connecting rod; 23. Column; 24. Electric slide rail; 25. Guide rail. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0016] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0017] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0019] Reference Figures 1-4 A valve ball spherical lathe includes: a base 1, a mounting seat 2 on the base 1, a mounting groove 3 on one side of the mounting seat 2, a clamping cylinder 4 structure in the mounting groove 3, and one side of the clamping cylinder 4 structure extending movably through the mounting seat 2 to the top of the mounting seat 2 for clamping the workpiece to be processed. A first bracket 10 is provided on the base 1. A rotating rod 11 is rotatably provided on one side of the first bracket 10. A worm gear 12 is provided on the outer periphery of the rotating rod 11. A worm gear rotation drive structure is provided on one side of the mounting base 2. The worm gear rotation drive structure is meshed with the worm gear 12. A base plate 13 is provided on the top of the worm gear 12. A second bracket 14 is provided on the base plate 13. A mounting plate 15 is mounted on the second bracket 14 through a lifting drive device. A connecting plate 16 is provided on one side of the mounting plate 15. One end of the connecting plate 16 extends above the clamping cylinder 4 structure. A grinding structure is provided on the side of the connecting plate 16 near the placement groove 5 for grinding the workpiece clamped on the clamping cylinder 4 structure.

[0020] When in use, the device can fix the valve ball workpiece to be processed through the clamping cylinder 4 structure set in the mounting groove 3. The meshing of the worm gear 12 and the worm gear rotation drive structure can drive the base plate 13 and the second bracket 14 to achieve arc-shaped trajectory rotation through the rotation of the worm gear rotation drive structure. Then, the mounting plate 15 can be moved up and down through the set lifting drive device, so that the grinding structure can be adapted to the spherical curvature of valve balls of different sizes, and the trajectory from rough grinding to fine grinding can be adjusted.

[0021] In the example of this application, the worm gear 12 is semi-circular.

[0022] As a preferred example of this utility model, the spherical surface of the valve ball is an arc-shaped curved surface. The rotation trajectory of the semi-circular worm gear 12 can drive the grinding structure to move along the arc-shaped path, so that the grinding head 21 can naturally fit the spherical surface for processing. Compared with the circular worm gear 12, it reduces the ineffective rotation stroke and improves the processing efficiency.

[0023] In the example of this application, the worm gear rotation drive structure includes a support plate 17 disposed on one side of the mounting base 2, a worm gear 18 rotatably disposed on the support plate 17, and a first rotary motor 19 disposed on one side of the mounting base 2. The drive end of the first rotary motor 19 is connected to the worm gear 18 through a belt pulley transmission structure.

[0024] As a preferred example of this utility model, the first rotary motor 19 can drive the worm gear 18 to rotate, thereby driving the meshing worm wheel 12 to move the worm wheel 12, the top base plate 13, the second bracket 14, and the grinding structure as a whole in an arc motion, so that the grinding structure contacts the workpiece surface at a uniform speed, avoiding scratches on the workpiece surface caused by speed fluctuations.

[0025] In the example of this application, the grinding structure includes a second rotary motor 20 disposed on the mounting plate 15, and a grinding head 21 disposed on the side of the connecting plate 16 near the placement groove 5. The second rotary motor 20 is connected to the grinding head 21 through a belt pulley transmission structure.

[0026] As a preferred example of this utility model, the second rotary motor 20 provides independent and controllable rotational power to the grinding head 21, and the grinding speed can be adjusted according to the material of the valve ball (such as stainless steel or copper alloy) to adapt to the processing requirements of workpieces with different hardness, and avoid incomplete grinding or workpiece damage caused by improper speed.

[0027] In the example of this application, the clamping cylinder 4 structure includes a clamping cylinder 4 disposed in the mounting groove 3. One side of the clamping cylinder 4 extends movably through the mounting base 2 to one side of the mounting base 2. A placement groove 5 is provided on one side of the clamping cylinder 4. An inner cavity 6 is provided inside the clamping cylinder 4. A plurality of clamping blocks 7 are disposed in the placement groove 5. A connecting rod 22 is connected to one side of the plurality of clamping blocks 7. One end of the connecting rod 22 extends movably through the placement groove 5 to the inner cavity 6.

[0028] As a preferred example of this utility model, the placement groove 5 provides an initial positioning reference for the workpiece. The clamping block 7 is linked with the subsequent drive structure through the connecting rod 22, which can clamp and fix the valve ball from multiple directions to avoid workpiece displacement during processing. At the same time, the multi-point contact between the clamping block 7 and the valve ball can disperse the clamping force and reduce workpiece deformation caused by excessive pressure at a single point. The independent setting of several clamping blocks 7 can be adjusted to adapt to valve balls of different diameters (such as DN15-DN100 specifications), improve the versatility of the equipment, eliminate the need to replace special fixtures for workpieces of different sizes, and reduce production input.

[0029] In the example of this application, a movable structure is provided in the mounting groove 3. One end of the movable structure is movably connected to the connecting rod 22 in the inner cavity 6 through the clamp, and is used to drive the connecting rod 22 to move so that a number of clamping blocks 7 move along the placement groove 5, so that the gap between the number of clamping blocks 7 shrinks.

[0030] As a preferred example of this utility model, the moving structure provides a horizontal driving force to the connecting rod 22. The clamping force of the clamping block 7 can be adjusted by controlling the moving distance. This ensures that the workpiece does not loosen during processing and avoids damage to the workpiece caused by over-clamping. It is especially suitable for processing thin-walled valve balls. The clamping block 7 is fixedly connected to the connecting rod 22 and there is a gap between adjacent clamping blocks 7. This makes the clamping action of each clamping block 7 synchronous and independent, avoiding interference between clamping blocks 7 due to insufficient gaps. This ensures that the clamping force is evenly distributed on the surface of the valve ball and further improves the positioning stability.

[0031] In the example of this application, the placement slot 5 is semi-circular.

[0032] As a preferred example of this utility model, the hemispherical structure is highly compatible with the spherical contour of the valve ball, which can quickly position the valve ball at the machining center, reducing the time for manual adjustment and improving machining efficiency; at the same time, the curved surface fit can disperse the workpiece's own weight and avoid positioning offset caused by single-point support.

[0033] In the examples of this application, several of the clamping blocks 7 are integrally formed from spring steel.

[0034] As a preferred example of this utility model, spring steel has good elastic deformation capability. When clamped, it can conform to the surface of the valve ball through slight deformation, avoiding scratches or indentations on the surface of the valve ball caused by rigid clamping. At the same time, the elastic restoring force can maintain the clamping force continuously, preventing the clamping from loosening due to vibration during processing.

[0035] In the example of this application, the moving structure includes a first cylinder 8 disposed in the mounting groove 3, and a guide rod 9 is provided at the driving end of the first cylinder 8. The guide rod 9 movably passes through the clamping cylinder 4 and is connected to the connecting rod 22.

[0036] As a preferred example of this utility model, the first cylinder 8 can provide a smooth linear driving force, which, together with the guiding action of the guide rod 9, ensures that the horizontal movement of the connecting rod 22 is without deviation, avoiding jamming or displacement of the clamping block 7 due to unstable driving; at the same time, the cylinder drive has a fast response speed, which can quickly complete the clamping and releasing actions, improving the efficiency of workpiece changeover.

[0037] In the example of this application, the second bracket 14 includes two parallel columns 23 arranged at intervals on the base plate 13, the lifting drive device is arranged on one side of the column 23, and the two sides of the mounting plate 15 are respectively connected to the lifting drive devices on the two columns 23.

[0038] As a preferred example of this utility model, the two columns 23 are arranged in parallel intervals, and the two sides of the mounting plate 15 are respectively connected to the lifting drive on the columns 23 to form a symmetrical lifting support structure. This prevents the mounting plate 15 from tilting or shaking during the lifting process, ensuring that the grinding head 21 always maintains stable vertical movement and improves processing accuracy.

[0039] In the example of this application, the lifting drive device includes an electric slide rail 24 disposed on one side of one of the columns 23 and a guide rail 25 disposed on the other side of the column 23. One side of the mounting plate 15 is fixedly connected to the slide table of the electric slide rail 24, and the other side is slidably connected to the guide rail 25.

[0040] As a preferred example of this utility model, the electric slide rail 24 provides power to drive the mounting plate 15 to rise and fall, while the guide rail 25 on the other side limits the direction of the rise and fall of the mounting plate 15. The two work together to ensure that the mounting plate 15 does not deviate or shake during the rise and fall process, thus ensuring the accuracy of distance control between the grinding head 21 and the workpiece.

[0041] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A valve ball spherical lathe, characterized in that, include: A base (1) is provided with a mounting seat (2). A mounting groove (3) is provided on one side of the mounting seat (2). A clamping cylinder structure is provided in the mounting groove (3). One side of the clamping cylinder structure extends through the mounting seat (2) to the top of the mounting seat (2) for clamping the workpiece to be processed. A first bracket (10) is provided on the base (1). A rotating rod (11) is rotatably provided on one side of the first bracket (10). A worm wheel (12) is provided on the outer periphery of the rotating rod (11). A worm wheel rotation drive structure is provided on one side of the mounting base (2). The worm wheel rotation drive structure is meshed with the worm wheel (12). A base plate (13) is provided on the top of the worm wheel (12). A second bracket (14) is provided on the base plate (13). A mounting plate (15) is installed on the second bracket (14) through a lifting drive device. A connecting plate (16) is provided on one side of the mounting plate (15). One end of the connecting plate (16) extends to the top of the clamping cylinder structure. A grinding structure is provided on the side of the connecting plate (16) near the placement groove (5) for grinding the workpiece clamped on the clamping cylinder structure.

2. A valve ball spherical lathe according to claim 1, characterized in that, The worm gear (12) is semi-circular.

3. A valve ball spherical lathe according to claim 1, characterized in that, The worm gear rotation drive structure includes a support plate (17) provided on one side of the mounting base (2), a worm (18) rotatably provided on the support plate (17), and a first rotary motor (19) provided on one side of the mounting base (2). The drive end of the first rotary motor (19) is connected to the worm (18) through a belt pulley transmission structure.

4. A valve ball spherical lathe according to claim 1, characterized in that, The grinding structure includes a second rotary motor (20) mounted on the mounting plate (15), and a grinding head (21) is provided on the side of the connecting plate (16) near the placement groove (5). The second rotary motor (20) is connected to the grinding head (21) through a belt pulley transmission structure.

5. A valve ball spherical lathe according to claim 1, characterized in that, The clamping cylinder structure includes a clamping cylinder (4) disposed in the mounting groove (3). One side of the clamping cylinder (4) extends through the mounting base (2) to one side of the mounting base (2). A placement groove (5) is provided on one side of the clamping cylinder (4). An inner cavity (6) is provided inside the clamping cylinder (4). A plurality of clamping blocks (7) are provided in the placement groove (5). A connecting rod (22) is connected to one side of the plurality of clamping blocks (7). One end of the connecting rod (22) extends through the placement groove (5) to the inner cavity (6).

6. A valve ball spherical lathe according to claim 5, characterized in that, A movable structure is provided in the mounting groove (3). One end of the movable structure is movably connected to the connecting rod (22) in the inner cavity (6) through the clamp. The clamping block is fixedly connected to the connecting rod, and a gap is provided between adjacent clamping blocks.

7. A valve ball spherical lathe according to claim 5, characterized in that, The placement groove (5) is hemispherical, and the clamping blocks (7) are all integrally formed from spring steel.

8. A valve ball spherical lathe according to claim 6, characterized in that, The movable structure includes a first cylinder (8) disposed in the mounting groove (3), and a guide rod (9) is provided at the driving end of the first cylinder (8). The guide rod (9) movably passes through the clamping cylinder (4) and is connected to the connecting rod (22).

9. A valve ball spherical lathe according to claim 1, characterized in that, The second bracket (14) includes two parallel columns (23) spaced apart on the base plate (13). The lifting drive device is located on one side of the column (23), and the two sides of the mounting plate (15) are respectively connected to the lifting drive devices on the two columns (23).

10. A valve ball spherical lathe according to claim 9, characterized in that, The lifting drive device includes an electric slide rail (24) on one side of one of the columns (23) and a guide rail (25) on one side of the other column (23). One side of the mounting plate (15) is fixedly connected to the slide of the electric slide rail (24), and the other side is slidably connected to the guide rail (25).

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