Anti-deviation structure for ball valve machining

Abstract

This utility model relates to the technical field of ball valve processing equipment, specifically an anti-deviation structure for ball valve processing. The clamping assembly includes a support frame, a clamping block, a first U-shaped frame, a hydraulic cylinder, and a hydraulic controller. The hydraulic cylinder and hydraulic controller are fixed below the processing table. The first U-shaped frame is installed at the output end of the hydraulic cylinder and extends through the processing table at both ends. Second U-shaped frames are fixedly installed at both ends of the first U-shaped frame. The support frame is fixed at the upper end of the processing table. The inner side of the clamping block has a curved groove, and the outer side of the clamping block has a push rod that extends through the support frame and is slidably connected to the support frame. The curved groove on the inner side of the clamping block is highly fitted to the curved surface of the outer wall of the ball valve core, changing the traditional point / line contact to surface contact. Combined with the symmetrical clamping force driven by the hydraulic cylinder, it completely solves the deviation problem caused by uneven clamping of existing three-jaw chucks, ensuring the positional stability of the inner wall of the valve core during grinding and improving the processing accuracy of the sealing surface.

Description

Technical Field

[0001] This utility model relates to the technical field of ball valve processing equipment, specifically to an anti-deviation structure for ball valve processing. Background Technology

[0002] As the core component of a ball valve, the smoothness of its inner wall and the dimensional accuracy of its spherical valve core directly affect its sealing performance.

[0003] In the current grinding process of ball valve cores, three-jaw chucks or flat clamping fixtures are mostly used to fix the valve core. Because the clamping surface has low contact with the outer wall of the ball, point contact or line contact is easy to occur, which leads to uneven force on the valve core during grinding, resulting in radial offset or axial movement, which will reduce the processing quality of the ball valve. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an anti-deviation structure for ball valve processing.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an anti-deviation structure for ball valve processing, comprising a processing table, a control box fixedly mounted on the upper end of the processing table, and two clamping components symmetrically arranged on the upper end of the processing table; The clamping assembly includes a support frame, a clamping block, a first U-shaped frame, a hydraulic cylinder, and a hydraulic controller. The hydraulic cylinder and the hydraulic controller are fixed below the processing table. The first U-shaped frame is installed at the output end of the hydraulic cylinder and extends through the processing table at both ends. Second U-shaped frames are fixedly installed at both ends of the first U-shaped frame. The support frame is fixed at the upper end of the processing table. The inner side of the clamping block is provided with a curved groove. The outer side of the clamping block is provided with a push rod that extends through the support frame and is slidably connected to the support frame. The outer end of the push rod is provided with an inclined groove. The second U-shaped frame is provided with a drive rod that extends through the inclined groove and is slidably connected to the inclined groove. The control box and the hydraulic controller are connected by an electrical signal.

[0006] Furthermore, an improvement of this utility model is that a support plate is provided below the processing table, and a hydraulic cylinder and a hydraulic controller are installed on the upper end of the support plate.

[0007] Furthermore, the present invention includes the following improvements: a lifting assembly is fixedly installed at the lower end of the processing table; a second vertical rod penetrating the processing table is provided at the output end of the lifting assembly; a support plate is fixedly installed at the top end of the second vertical rod; and a first vertical rod connecting the first U-shaped frame is provided at the output end of the hydraulic cylinder.

[0008] Furthermore, an improvement of this utility model is that the lifting assembly adopts an electric lifting rod.

[0009] To improve the applicability of this structure, the present invention includes the following improvements: the outer side of the clamping block is provided with a positioning groove, the front end of the push rod is inserted into the positioning groove and fits tightly with the positioning groove, the inner wall of the positioning groove is provided with a slot, the front end of the push rod is symmetrically provided with multiple cavities, each cavity is provided with a spring, one end of the spring is fixed inside the cavity, and the other end is provided with a locking block that cooperates with the slot. All of the locking blocks are isosceles trapezoidal structures, which facilitates the replacement of different clamping blocks. The curved grooves on different clamping blocks have different specifications and are suitable for different valve core outer wall curved surfaces.

[0010] To facilitate assembly of the push rod, the present invention includes the following improvements: the drive rod is a cylindrical structure, and both ends of the drive rod are fixed to the second U-shaped frame by screws. The bottom end of the support frame is provided with a base plate, which is fixed to the upper end of the processing table by screws.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides an anti-deviation structure for ball valve processing, which has the following beneficial effects: The curved groove on the inner side of the clamping block fits closely to the curved surface of the outer wall of the ball valve core, changing the traditional point / line contact to surface contact. Combined with the symmetrical clamping force driven by the hydraulic cylinder, it completely solves the offset problem caused by uneven clamping of the existing three-jaw chuck, ensuring the positional stability of the valve core inner wall during grinding and improving the machining accuracy of the sealing surface.

[0012] The clamping block can be quickly assembled and disassembled with the positioning groove through the locking block-slot structure at the front end of the push rod. Clamping blocks of different specifications (with different curvature of the curved groove) can be adapted to various valve core models without the need to change the overall tooling, shortening the changeover time and improving the flexibility of the production line. Attached Figure Description

[0013] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention; Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention; Figure 3 This utility model Figure 1 The main view; Figure 4 This is an assembly drawing of the clamping block in this utility model; In the diagram: 1. Processing table; 2. Control box; 3. Lifting assembly; 4. Pallet; 5. Support frame; 6. Push rod; 7. Clamping block; 8. Positioning groove; 9. Slot; 10. Clamping block; 11. Inclined groove; 12. Second U-shaped frame; 13. Drive rod; 14. First U-shaped frame; 15. Hydraulic cylinder; 16. Hydraulic controller; 17. Curved groove. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-4 The present invention provides an anti-deviation structure for ball valve processing, comprising a processing table 1, a control box 2 fixedly mounted on the upper end of the processing table 1, and two clamping components symmetrically arranged on the upper end of the processing table 1. The clamping assembly includes a support frame 5, a clamping block 7, a first U-shaped frame 14, a hydraulic cylinder 15, and a hydraulic controller 16. The hydraulic cylinder 15 and the hydraulic controller 16 are fixed below the processing table 1. The first U-shaped frame 14 is installed at the output end of the hydraulic cylinder 15 and extends through the processing table 1 at both ends. A second U-shaped frame 12 is fixedly installed at both ends of the first U-shaped frame 14. The support frame 5 is fixed at the upper end of the processing table 1. The inner side of the clamping block 7 is provided with a curved groove 17. The outer side of the clamping block 7 is provided with a push rod 6 that extends through the support frame 5 and is slidably connected to the support frame 5. The outer end of the push rod 6 is provided with a slanted groove 11. The second U-shaped frame 12 is provided with a drive rod 13 that extends through the slanted groove 11 and is slidably connected to the slanted groove 11. The control box 2 and the hydraulic controller 16 are connected by an electrical signal.

[0016] A support plate is provided below the processing table 1, and the hydraulic cylinder 15 and the hydraulic controller 16 are installed on the upper end of the support plate.

[0017] The lifting assembly 3 is an electric lifting rod.

[0018] Clamping preparation: The lower end of the processing table 1 is fixedly provided with a lifting component 3. The output end of the lifting component 3 is provided with a second vertical rod that passes through the processing table 1. The top end of the second vertical rod is fixedly provided with a support plate 4. The output end of the hydraulic cylinder 15 is provided with a first vertical rod that connects to the first U-shaped frame 14.

[0019] Place the ball valve core to be processed on the tray 4 on the top of the lifting assembly 3 at the lower end of the processing table 1.

[0020] By controlling the start of the lifting assembly 3 (electric lifting rod) in the control box 2, the pallet 4 rises synchronously with the second vertical rod, and the ball valve core is precisely positioned at the designated processing position between the two clamping blocks 7.

[0021] Clamping and fixing: The control box 2 sends an electrical signal to the hydraulic controller 16, which drives the hydraulic cylinder 15 on the support plate below the processing table 1 to start.

[0022] The hydraulic cylinder 15 pushes the first U-shaped frame 14 upward through the first vertical rod, and the second U-shaped frames 12 at both ends of the first U-shaped frame 14 are raised accordingly.

[0023] At this time, the drive rod 13 on the second U-shaped frame 12 slides along the inclined groove 11 of the push rod 6 on the outside of the clamping block 7. Due to the guiding effect of the inclined groove 11, the push rod 6 pushes the clamping block 7 forward, so that the two clamping blocks 7 move towards the ball valve core in sync.

[0024] The curved groove 17 on the inner side of the clamping block 7 fits tightly against the outer wall of the ball valve core, forming a uniform clamping force through surface contact, which effectively limits the radial displacement and axial movement of the valve core during processing.

[0025] Model compatibility and replacement: The clamping block 7 has a positioning groove 8 on its outer side. The front end of the push rod 6 is inserted into the positioning groove 8 and fits tightly with it. The inner wall of the positioning groove 8 has a slot 9. The front end of the push rod 6 has multiple cavities symmetrically arranged. A spring is installed in each cavity. One end of the spring is fixed inside the cavity, and the other end has a locking block 10 that cooperates with the slot 9. All locking blocks 10 are isosceles trapezoidal structures, which facilitates the replacement of different clamping blocks 7. The curved grooves 17 on different clamping blocks 7 have different specifications and are suitable for different valve core outer wall curved surfaces.

[0026] When machining ball valve cores of different specifications, pull the clamping block 7 so that the external force is greater than the elastic force of the spring at the front end of the push rod 6. The isosceles trapezoidal locking block 10 compresses the spring and disengages from the locking groove 9 on the inner wall of the positioning groove 8. The front end of the push rod 6 is then pulled out of the positioning groove 8, allowing the old clamping block 7 to be disassembled and replaced with a suitable model. When installing the new clamping block 7, the front end of the push rod 6 is inserted into the positioning groove 8, and the locking block 10 is locked into the locking groove 9 under the action of the spring, completing the quick positioning.

[0027] The electrical signal linkage between the control box 2 and the hydraulic controller 16 enables one-button clamping, avoiding errors caused by manual adjustment. The hydraulic cylinder 15 is rigidly connected to the first U-shaped frame 14 through the first vertical rod. Combined with the transmission design of the drive rod 13 and the inclined groove 11, the vertical lifting motion is converted into horizontal clamping force, which has high transmission efficiency and low power loss.

[0028] The drive rod 13 is a cylindrical structure. Both ends of the drive rod 13 are fixed to the second U-shaped frame 12 by screws. The bottom end of the support frame 5 is provided with a base plate, which is fixed to the upper end of the processing table 1 by screws.

[0029] The support frame 5 is fixed to the processing table 1 by the base plate screws, providing rigid support for the clamping block 7; the two ends of the drive rod 13 are connected to the second U-shaped frame 12 by screws to ensure that there is no loosening during the transmission process; the bearing plate under the processing table 1 is uniformly equipped with hydraulic cylinder 15 and hydraulic controller 16 to reduce the impact of vibration and improve the overall stability of the equipment.

[0030] Control Chassis 2 (Core Control Unit): Selection criteria: It is necessary to realize the logic control and signal transmission of the hydraulic controller 16 and the lifting assembly 3, and adapt to the anti-interference requirements of the industrial processing environment.

[0031] Recommended model: PLC controller: Siemens S7-200SMART series (CPUST20), supports DC24V power supply, integrates 12 digital inputs / 8 digital outputs, can communicate with hydraulic controller 16 via PROFINET protocol, and meets the requirements of on / off control.

[0032] Human-Machine Interface (HMI): Weintek MT8071iE touchscreen, 7-inch color display, supports parameter setting and status monitoring, and communicates with PLC via RS485.

[0033] Hydraulic controller 16 (hydraulic system control center): Selection criteria: It needs to receive PLC electrical signals and drive the hydraulic cylinder 15 to achieve precise adjustment and pressure control of clamping force.

[0034] Recommended model: Proportional directional valve: Rexroth 4WE10J33 / CG24N9K4, 10mm diameter, rated pressure 31.5MPa, electromagnetic control, used in conjunction with the 0-10V analog output of the PLC to achieve speed and direction control of the hydraulic cylinder 15.

[0035] Hydraulic control unit: Parker PGP511 series gear pump combination unit, rated pressure 21MPa, flow rate 10L / min, integrated safety valve and filter, adapted to the oil supply requirements of hydraulic cylinder 15.

[0036] Hydraulic cylinder 15 (clamping power actuator): Selection criteria: Stable clamping force is required to ensure that the clamping block 7 is in face contact with the ball valve core and fixed, considering a load of approximately 50-100kg and a stroke of 50-80mm.

[0037] Recommended model: Standard hydraulic cylinder 15: Yuci Oil Research Y-HG1-E50 / 36×80, cylinder diameter 50mm, rod diameter 36mm, stroke 80mm, rated pressure 16MPa, end cap type mounting structure, adapted to the connection requirements of the first U-shaped frame 14.

[0038] Displacement sensor: MTL magnetostrictive displacement sensor (model MTSRHM0080MP051S1G6100), installed on the outside of cylinder 15 of hydraulic cylinder, with a detection accuracy of ±0.05mm, and provides real-time feedback of piston position to PLC.

[0039] Lifting component 3 (electric lifting actuator): Selection criteria: The valve needs to support the ball valve core and achieve precise lifting and positioning, with a load of approximately 50kg, a stroke of 200mm, and a positioning accuracy of ±0.1mm.

[0040] Recommended model: Electric lifting mast: Dazhu Motor ZKL100-L200, lead screw 10mm, thrust 1000N, stroke 200mm, equipped with a 100W servo motor (model ECMA-C10604RS), the lifting speed and position are controlled by the pulse signal of PLC.

[0041] Servo driver: Leadshine DM542, compatible with the above servo motors, supports pulse + direction control mode, response frequency 200kHz, ensuring the smooth lifting of pallet 4.

[0042] Auxiliary electrical components: Switching power supply: Mean Well S-200-24, input AC220V, output DC24V / 8.3A, to power low-voltage components such as PLCs and sensors.

[0043] Relay module: Omron G6D-1A, DC24V coil, 5A contact capacity, used to isolate the PLC output signal from the high-voltage circuit of the hydraulic controller 16.

[0044] Cables and connectors: Power cable: YC heavy-duty rubber-sheathed cable (3×2.5mm) 2 ), used to power the hydraulic cylinder 15 motor; Control cable: RVVP shielded cable (4×0.75mm) 2 It is used for sensor signal transmission and has an IP65 protection rating.

[0045] Circuit breaker: Schneider C65N-C16 / 1P, rated current 16A, provides overload protection for control box 2 and hydraulic system.

[0046] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An anti-deviation structure for ball valve machining, comprising a machining table (1), wherein a control housing (2) is fixedly mounted on the upper end of the machining table (1), characterized in that: Two clamping components are symmetrically arranged at the upper end of the processing table (1); The clamping assembly includes a support frame (5), a clamping block (7), a first U-shaped frame (14), a hydraulic cylinder (15), and a hydraulic controller (16). The hydraulic cylinder (15) and the hydraulic controller (16) are fixed below the processing table (1). The first U-shaped frame (14) is installed at the output end of the hydraulic cylinder (15) and its two ends pass through the processing table (1). The two ends of the first U-shaped frame (14) are fixedly provided with a second U-shaped frame (12). The support frame (5) is fixed at the upper end of the processing table (1). The inner side of the clamping block (7) is provided with a curved groove (17). The outer side of the clamping block (7) is provided with a push rod (6) that passes through the support frame (5) and is slidably connected to the support frame (5). The outer end of the push rod (6) is provided with a slanted groove (11). The second U-shaped frame (12) is provided with a drive rod (13) that passes through the slanted groove (11) and is slidably connected to the slanted groove (11). The control box (2) and the hydraulic controller (16) are connected by an electrical signal.

2. The anti-deviation structure for ball valve processing according to claim 1, characterized in that: The processing table (1) is provided with a support plate below it, and the hydraulic cylinder (15) and hydraulic controller (16) are installed on the upper end of the support plate.

3. The anti-deviation structure for ball valve processing according to claim 2, characterized in that: The lower end of the processing table (1) is fixedly provided with a lifting component (3), and the output end of the lifting component (3) is provided with a second vertical rod that passes through the processing table (1). The top end of the second vertical rod is fixedly provided with a support plate (4).

4. The anti-deviation structure for ball valve processing according to claim 3, characterized in that: The output end of the hydraulic cylinder (15) is provided with a first vertical rod that connects to the first U-shaped frame (14).

5. The anti-deviation structure for ball valve processing according to claim 4, characterized in that: The lifting assembly (3) uses an electric lifting rod.

6. The anti-deviation structure for ball valve processing according to claim 5, characterized in that: The clamping block (7) has a positioning groove (8) on its outer side. The front end of the push rod (6) is inserted into the positioning groove (8) and fits tightly with the positioning groove (8). The inner wall of the positioning groove (8) has a slot (9). The front end of the push rod (6) is symmetrically provided with multiple cavities. A spring is provided in the cavity. One end of the spring is fixed inside the cavity, and the other end is provided with a locking block (10) that cooperates with the slot (9). All of the locking blocks (10) are isosceles trapezoidal structures.

7. The anti-deviation structure for ball valve processing according to claim 6, characterized in that: The drive rod (13) is a cylindrical structure. Both ends of the drive rod (13) are fixed to the second U-shaped frame (12) by screws. The bottom end of the support frame (5) is provided with a base plate, which is fixed to the upper end of the processing table (1) by screws.

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