A ball valve ball core surface turning and polishing device

Abstract

The utility model relates to ball valve ball core machining technical field, concretely to a ball valve ball core surface turning polishing device, including work head, be equipped with processing area on work head, the inside of processing area is equipped with the inner hole for the inner hole of ball core and controls its rotation's rotation mechanism of straining, rotation mechanism includes rotation module, and the output end fixed mounting of rotation module has rotation axis, and the outer surface of rotation axis is equipped with the shell of sleeve, and the outer surface of shell is inserted with a plurality of straining piece at interval, and the inside of shell is equipped with adjusting assembly, and the front end of shell is equipped with drive assembly, through setting shell, straining piece, adjusting assembly and drive assembly, reached can control a plurality of straining piece synchronous from ball core inner hole multi -point even force, form the inner bracing type centering, avoid the ball core surface damage or clamping deviation caused by traditional mode, make straining piece keep the bracing force of ball core inner hole continuously, even in turning polishing time, radial cutting force or vibration is received, also can avoid ball core loose or fall off.

Description

Technical Field

[0001] This utility model relates to the field of ball valve core processing technology, and in particular to a ball valve core surface turning and polishing device. Background Technology

[0002] The ball valve core surface turning and polishing device is a special equipment used for precision machining of the outer surface of the core component of the ball valve. Its core function is to remove excess material from the surface of the core by turning and reduce surface roughness by polishing, so as to ultimately meet the requirements of ball valve sealing performance and operational flexibility.

[0003] A ball valve core surface turning and polishing device disclosed in Chinese Patent Publication No. CN222307978U describes a device for turning and polishing the surface of a ball valve core. This device involves placing the ball valve core on the outside of a stabilizing block and activating a stabilizing drive mechanism until the stabilizing block is tightly connected to the inner surface of the ball valve core. This allows ball valve cores of different sizes to be stably placed on the operating table. However, according to ball valve core surface turning and polishing devices provided in related fields and existing technologies, the fixtures of existing devices are mostly of fixed specifications or tapered designs, which can only adapt to the inner holes of ball valve cores with a single or a few inner diameters and curvatures. For different models of ball valve cores, special fixtures need to be frequently changed, increasing tooling reserve costs. Furthermore, it is impossible to accurately control the fit between the clamping component and the inner hole of the ball valve core, affecting the centering accuracy. At the same time, during the processing, the clamping force is easily weakened or loosened due to the influence of cutting forces and vibrations, causing radial movement of the ball valve core and affecting the processing accuracy. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a ball valve core surface turning and polishing device.

[0005] The objective of this utility model is achieved through the following technical solution: a ball valve core surface turning and polishing device, comprising a worktable, a processing area on the worktable, a rotating mechanism inside the processing area for supporting the inner hole of the core and controlling its rotation, a turning mechanism for turning the core and a polishing mechanism for polishing the core inside the processing area; the rotating mechanism includes a rotating module, a rotating shaft fixedly mounted at the output end of the rotating module, a housing fitted on the outer surface of the rotating shaft, multiple supporting members inserted at equal intervals on the outer surface of the housing, an adjusting component inside the housing for controlling the multiple supporting members to slide in opposite directions, and a drive component at the front end of the housing for controlling the operation of the adjusting component and self-locking.

[0006] Preferably, the adjustment assembly includes a splined shaft rotatably disposed inside the housing, the rear end of the splined shaft being rotatably connected to the rotating shaft, and two adjustment discs being inserted into the outer surface of the splined shaft. Both adjustment discs are splinedly connected to the splined shaft, and each of the two adjustment discs has a guide groove corresponding to the position of each of the support members. The guide groove is an arc-shaped groove.

[0007] Preferably, the plurality of the tensioning members are disposed between the two adjusting discs, and each tensioning member is fixedly provided with a guide shaft at the position corresponding to the guide groove.

[0008] Preferably, the drive assembly includes a worm gear and a worm shaft rotatably disposed at the front end of the housing, the worm gear being splinedly connected to the splined shaft, and the worm shaft meshing with the worm gear.

[0009] Preferably, the outer casing is fixedly provided with a fixing member at one end of the worm gear, the fixing member has a first rotating hole corresponding to the end of the worm gear, the worm gear is connected to the first rotating hole through a bearing, and a knob is fixedly provided at the end of the worm gear away from the fixing member.

[0010] Preferably, the outer shell has sliding holes at the positions corresponding to the multiple support members, and the outer surfaces of the multiple support members are provided with flexible layers.

[0011] Preferably, the rotating shaft has a second rotating hole at the tail end corresponding to the spline shaft, the spline shaft is connected to the second rotating hole through a bearing, and the outer shell has a through hole at the position corresponding to the spline shaft.

[0012] Preferably, a screw is inserted into one end of the housing near the rotating shaft, and the rotating shaft has a threaded hole that matches the position of the screw.

[0013] Beneficial effects:

[0014] This ball valve core surface turning and polishing device, through the setting of a housing, a clamping component, an adjusting component, and a driving component, achieves the effect of controlling multiple clamping components to simultaneously apply force evenly from multiple points inside the ball core, forming an internal support centering, avoiding the surface damage or clamping displacement of the ball core caused by traditional methods. It ensures the coaxiality of the ball core and the rotating shaft during turning and polishing, reducing machining errors caused by eccentricity, and ensures that the ball core has no radial movement when rotating at high speed, improving the dimensional consistency of batch processing. It allows the clamping component to continuously maintain the clamping force on the inner hole of the ball core, and even if subjected to radial cutting force or vibration during turning and polishing, it can prevent the ball core from loosening or falling off, significantly reducing the scrap rate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the state of the multiple supporting members of this utility model after they have retracted into the interior of the outer shell;

[0018] Figure 3 This is a schematic diagram showing the state of the multiple supporting members of this utility model after they have extended outward from the outer shell;

[0019] Figure 4 This is a schematic diagram showing the disassembled structure of the outer shell and the rotating shaft of this utility model;

[0020] Figure 5 This is a schematic diagram showing the state of the adjusting disc when multiple supporting members of this utility model retract inward;

[0021] Figure 6 This is a schematic diagram showing the state of the adjusting disc when multiple supporting members of this utility model extend outwards;

[0022] Figure 7 This is a schematic diagram of the structure of the second rotating hole of this utility model.

[0023] In the diagram: 1. Worktable; 101. Machining area; 2. Turning mechanism; 3. Polishing mechanism; 4. Rotary module; 5. Rotary shaft; 501. Second rotating hole; 502. Threaded hole; 6. Housing; 601. Fixing component; 602. First rotating hole; 603. Sliding hole; 604. Screw; 7. Support component; 701. Guide shaft; 8. Adjustment assembly; 801. Splined shaft; 802. Adjustment disc; 803. Guide groove; 9. Drive assembly; 901. Worm gear; 902. Worm; 903. Knob. Detailed Implementation

[0024] In the description of this utility model, it should be noted that, 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 or an electrical 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.

[0025] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0026] like Figures 1 to 7 As shown, a ball valve core surface turning and polishing device includes a worktable 1 with a processing area 101. The processing area 101 contains a rotating mechanism for supporting the inner hole of the ball core and controlling its rotation. The processing area 101 also contains a turning mechanism 2 for turning the ball core and a polishing mechanism 3 for polishing the ball core. The rotating mechanism includes a rotating module 4, with a rotating shaft 5 fixedly mounted at its output end. A housing 6 is fitted onto the outer surface of the rotating shaft 5. A screw 604 is inserted into one end of the housing 6 near the rotating shaft 5. The rotating shaft 5 has a threaded hole 502 corresponding to the screw 604. By removing the screw 604, the housing 6 can be separated from the rotating shaft 5. By installing the screw 604, the rotating shaft 5 can drive the housing 6 to rotate. Multiple tensioning members 7 are inserted at equal intervals on the outer surface. Sliding holes 603 are provided at the positions of the multiple tensioning members 7 on the outer shell 6. The outer surface of the multiple tensioning members 7 is provided with a flexible layer (rubber). The flexible layer can improve the fit between the tensioning members 7 and the ball valve core, and can also prevent the ball valve core from being scratched during tensioning. The inner part of the outer shell 6 is provided with an adjustment component 8 for controlling the opposing sliding of the multiple tensioning members 7. The front end of the outer shell 6 is provided with a drive component 9 for controlling the operation of the adjustment component 8 and self-locking. The tensioning members 7 apply force evenly from multiple points in the inner hole to form an internal support centering, which avoids the damage to the ball core surface or clamping offset caused by traditional methods. This ensures the coaxiality of the ball core and the rotating shaft 5 during turning and polishing, reduces the machining error caused by eccentricity, and ensures that the ball core has no radial movement when rotating at high speed, thus improving the dimensional consistency of batch processing.

[0027] Adjustment assembly 8 includes a splined shaft 801 rotatably disposed inside housing 6. The rear end of splined shaft 801 is rotatably connected to rotating shaft 5. Two adjustment discs 802 are inserted into the outer surface of splined shaft 801, and both adjustment discs 802 are splinedly connected to splined shaft 801. Each adjustment disc 802 has a guide groove 803 corresponding to the position of each support member 7. The guide groove 803 is an arc-shaped groove. Rotating shaft 5 has a second rotation hole 501 corresponding to the tail end of splined shaft 801. Splined shaft 801 is connected to the second rotation hole 501 through a bearing. Housing 6 corresponds to the splined shaft 801. A through hole is provided at the position of the key shaft 801. By using the aforementioned bearing, the friction force of the spline shaft 801 during rotation can be reduced, and the stability of the spline shaft 801 during rotation can be improved. Multiple support members 7 are all set between the two adjusting discs 802. The support members 7 are all fixedly provided with guide shafts 701 at the positions corresponding to the guide grooves 803. The adjusting assembly 8 can adapt to the inner hole of ball valve cores with different inner diameters and curvatures by controlling the synchronous sliding of multiple support members 7. This eliminates the need for frequent fixture changes, reduces changeover time costs, and improves the adaptability of the equipment to multi-batch and multi-variety production.

[0028] Drive assembly 9 includes a worm gear 901 and a worm 902 rotatably mounted at the front end of housing 6. The worm gear 901 is splinedly connected to a splined shaft 801, and the worm 902 meshes with the worm gear 901. Housing 6 is fixedly provided with a fixing member 601 at one end of the worm 902. The fixing member 601 has a first rotation hole 602 at the end of the worm 902. The worm 902 is connected to the first rotation hole 602 through a bearing. A knob 903 is fixedly provided at the end of the worm 902 away from the fixing member 601. The bearing is a damping bearing, which ensures that the worm 902 can rotate stably in the circumferential direction while giving the worm 902 a damping effect, absorbing and converting vibrations. Energy is used for vibration damping; the drive assembly 9 adopts a worm gear 901 and worm 902 structure, whose high transmission ratio characteristics enable fine-tuning control. The small-angle rotation of the worm 902 drives the worm gear 901 to rotate slowly, thereby driving the adjustment assembly 8 to precisely adjust the position of the support member 7 to meet the requirements of precision machining. Based on the self-locking principle of the worm gear 901 and worm 902, when the drive assembly 9 stops power input, the worm 902 cannot be driven in reverse by the worm gear 901, thereby locking the position of the adjustment assembly 8 and ensuring that the support member 7 continuously maintains the tension force on the inner hole of the ball core. Even when subjected to radial cutting force or vibration during turning and polishing, it can prevent the ball core from loosening or falling off, significantly reducing the machining scrap rate.

[0029] The work process is as follows:

[0030] S1: During processing, the ball valve core is fitted onto the surface of the housing 6, and then the worm 902 is rotated by the knob 903. At this time, the meshing between the worm 902 and the worm wheel 901 is used to make the worm wheel 901 drive the spline shaft 801 to rotate.

[0031] S2: When the spline shaft 801 rotates, the two adjusting discs 802 are connected to its spline, so that the two adjusting discs 802 can rotate synchronously. At this time, the cooperation between the guide groove 803 and the guide shaft 701 can control the multiple supporting members 7 to expand outward or contract inward when the adjusting discs 802 rotate.

[0032] S3: In summary, the adjusting component 8 controls multiple supporting parts 7 to slide synchronously in opposite directions, which can adapt to the inner hole of the ball valve core with different inner diameters and curvatures. This eliminates the need for frequent fixture changes, reduces changeover time costs, and improves the equipment's adaptability to multi-batch and multi-variety production.

[0033] S4: The tensioning component 7 applies force evenly from multiple points in the inner hole to form an internal support centering, avoiding damage to the ball core surface or clamping offset caused by traditional methods. This ensures the coaxiality of the ball core and the rotating shaft during turning and polishing, reducing machining errors caused by eccentricity, and also ensures that the ball core has no radial movement when rotating at high speed, improving the dimensional consistency of batch processing.

[0034] S5: The drive assembly 9 adopts a worm gear 901 and worm 902 structure. Its high transmission ratio characteristic enables fine-tuning control. The small-angle rotation of the worm 902 drives the worm gear 901 to rotate slowly, thereby driving the adjustment assembly 8 to precisely adjust the position of the support member 7 to meet the requirements of precision machining. Based on the self-locking principle of the worm gear 901 and worm 902, when the drive assembly 9 stops power input, the worm 902 cannot be driven in reverse by the worm gear 901, thereby locking the position of the adjustment assembly 8 and ensuring that the support member 7 continuously maintains the support force on the inner hole of the ball core. Even when subjected to radial cutting force or vibration during turning and polishing, it can prevent the ball core from loosening or falling off, significantly reducing the machining scrap rate.

[0035] S6: Once the ball core is fixed, it can be machined by the turning mechanism 2. After the turning is completed, it can be polished by the polishing mechanism 3.

[0036] The turning mechanism 2, polishing mechanism 3, rotary module 4, ordinary bearing and damping bearing described in this application are all known technologies in this field, therefore their specific structures and working principles are not described in detail.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for turning and polishing the surface of a ball valve core, characterized in that: Includes a worktable (1), on which a processing area (101) is provided, and the interior of the processing area (101) is provided with a rotating mechanism for supporting the inner hole of the ball core and controlling its rotation, and the interior of the processing area (101) is provided with a turning mechanism (2) for turning the ball core and a polishing mechanism (3) for polishing the ball core. The rotating mechanism includes a rotating module (4), the output end of which is fixedly mounted with a rotating shaft (5). The outer surface of the rotating shaft (5) is fitted with a housing (6). Multiple support members (7) are inserted into the outer surface of the housing (6) at equal intervals. The interior of the housing (6) is provided with an adjustment component (8) for controlling the multiple support members (7) to slide in opposite directions. The front end of the housing (6) is provided with a drive component (9) for controlling the operation of the adjustment component (8) and self-locking.

2. The ball valve core surface turning and polishing device according to claim 1, characterized in that: The adjustment assembly (8) includes a spline shaft (801) rotatably disposed inside the housing (6). The rear end of the spline shaft (801) is rotatably connected to the rotating shaft (5). Two adjustment discs (802) are inserted into the outer surface of the spline shaft (801). Both adjustment discs (802) are splinedly connected to the spline shaft (801). Each of the two adjustment discs (802) has a guide groove (803) corresponding to the position of each of the support members (7). The guide groove (803) is an arc-shaped groove.

3. The ball valve core surface turning and polishing device according to claim 2, characterized in that: Multiple of the aforementioned support members (7) are disposed between the two aforementioned adjustment discs (802), and each of the support members (7) is fixedly provided with a guide shaft (701) at the position corresponding to the guide groove (803).

4. The ball valve core surface turning and polishing device according to claim 3, characterized in that: The drive assembly (9) includes a worm wheel (901) and a worm (902) rotatably disposed at the front end of the housing (6). The worm wheel (901) is splinedly connected to the spline shaft (801), and the worm (902) meshes with the worm wheel (901).

5. The ball valve core surface turning and polishing device according to claim 4, characterized in that: The outer casing (6) is fixedly provided with a fixing member (601) at one end of the worm (902). The fixing member (601) has a first rotating hole (602) at the end of the worm (902). The worm (902) is connected to the first rotating hole (602) through a bearing. A knob (903) is fixedly provided at the end of the worm (902) away from the fixing member (601).

6. The ball valve core surface turning and polishing device according to claim 1, characterized in that: The outer shell (6) has sliding holes (603) at the positions corresponding to the multiple support members (7), and the outer surface of the multiple support members (7) is provided with a flexible layer.

7. The ball valve core surface turning and polishing device according to claim 2, characterized in that: The rotating shaft (5) has a second rotating hole (501) at the tail end of the spline shaft (801). The spline shaft (801) is connected to the second rotating hole (501) through a bearing. The outer shell (6) has a through hole at the position corresponding to the spline shaft (801).

8. The ball valve core surface turning and polishing device according to claim 1, characterized in that: A screw (604) is inserted into one end of the outer casing (6) near the rotating shaft (5), and the rotating shaft (5) has a threaded hole (502) that matches the position of the screw (604).

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