Quick clamping tool for machining inner curved surface of spherical head

Abstract

The application relates to a quick clamping tool for processing the inner curved surface of a spherical head, which comprises a pedestal, the top surface of the pedestal is provided with a semispherical groove for accommodating the spherical head, and the top surface of the pedestal is also provided with an annular part which is flush with the groove opening of the semispherical groove, a plurality of vertical locking assemblies are arranged on the annular part at equal intervals in the circumferential direction and are used for vertically supporting and fixing the spherical head; a plurality of elastic leveling assemblies are arranged at the groove bottom of the semispherical groove; and a plurality of inclined support assemblies are arranged at the groove wall of the semispherical groove at equal intervals in the circumferential direction and are used for obliquely supporting and fixing the spherical head. After the spherical head is placed in the semispherical groove, the bottom of the spherical head is ensured to be in good contact through the elastic leveling assemblies; the vertical locking assemblies are adjusted to lock the spherical head, so that the spherical head cannot deviate during the processing. The inclined support assemblies provide additional support and better stability during the processing. The problems that the spherical head is inconvenient to clamp and fix and the product is prone to shaking during the processing to reduce the quality of the product are solved.

Description

Technical Field

[0001] This application relates to the field of CNC machine tool machining spherical heads quick positioning fixtures, and in particular to a quick clamping fixture for machining the inner curved surface of a spherical head. Background Technology

[0002] Currently, there are two main manufacturing processes for spherical heads: one is to use dies and dies for stamping, and the other is to use CNC machine tools for integral machining.

[0003] Currently, CNC machine tools primarily rely on chucks and jaws for positioning and clamping when machining spherical heads. However, machining the inner curved surfaces of large spherical heads presents clamping challenges. Conventional processes use welded tooling plates for clamping, a time-consuming and labor-intensive process. Furthermore, chucks and jaws often fail to apply even clamping force when holding the spherical head, especially on the inner curved surfaces. Uneven clamping force distribution not only leads to workpiece deformation but also presents other problems. Firstly, for larger spherical heads, existing tooling and manual clamping are insufficient. Secondly, the thin wall thickness of the product during machining means that uneven force on the cutting tool can easily cause vibration, thus reducing product quality. Summary of the Invention

[0004] This application provides a quick clamping fixture for machining the inner curved surface of a spherical head, to solve the problem in related technologies where it is inconvenient to clamp and fix the spherical head, and the product is prone to shaking during the machining process, which reduces its quality.

[0005] In a first aspect, a quick clamping fixture for machining the inner curved surface of a spherical head is provided, comprising a platform with a hemispherical groove on its top surface for accommodating the spherical head, and an annular portion on the top surface of the platform that is flush with the opening of the hemispherical groove. Multiple vertical locking components are evenly spaced along the circumferential direction on the annular portion for vertically supporting and fixing the spherical head; multiple elastic leveling components are disposed at the bottom of the hemispherical groove; and multiple diagonal bracing components are evenly spaced along the circumferential direction of the wall of the hemispherical groove for obliquely supporting and fixing the spherical head.

[0006] In some embodiments, the platform is a cylindrical platform with a hollow interior; the sidewall of the cylindrical platform is provided with a plurality of first operating ports, and the bottom surface is provided with a plurality of second operating ports; the groove wall of the hemispherical groove is provided with a fourth operating port that communicates with the first and second operating ports at equal intervals.

[0007] In some embodiments, the bottom of the hemispherical groove is provided with a third operating port that penetrates the cylindrical base; multiple elastic leveling components are located on the periphery of the third operating port and are evenly distributed along the circumferential direction.

[0008] In some embodiments, the elastic leveling assembly includes an upper base, a lower base, and a first bolt. Both the upper base and the lower base are provided with multiple first through holes. The platform is provided with multiple first mounting slots that communicate with the bottom of the hemispherical groove. The lower base is fixed to the bottom of the first mounting slot by a locking bolt passing through the first through hole. The upper base is fixed to the opening of the first mounting slot by a locking bolt passing through the first through hole. The upper base is provided with a second through hole through which the first bolt passes. The nut of the first bolt abuts against the bottom of the upper base, and the nut is connected to the lower base by a spring.

[0009] In some embodiments, a washer and a second bolt are also included. The washer has a retaining groove, and the bottom of the retaining groove has a through hole that passes through the washer. The first bolt has a threaded hole at one end away from its nut. The second bolt passes through the through hole and rotates into the threaded hole, and its top abuts against the retaining groove to fix the washer to the end of the first bolt away from its nut.

[0010] In some embodiments, multiple bracing components are divided into two groups, and the two groups of bracing components are arranged at equal intervals along the circumferential wall of the hemispherical groove. The distribution positions of the two groups of bracing components form two distribution circles respectively; the radius of the distribution circle formed by the first group of bracing components is larger than the radius of the distribution circle formed by the second group of bracing components.

[0011] In some embodiments, the hemispherical groove has a second mounting groove on its wall at two distributed circles; the diagonal brace assembly includes a first screw and a floating nut; the first screw is fixed to the second mounting groove, and the end of the first screw outside the second mounting groove is connected to a support block by an extension rod; the floating nut is hollowed out, and one end is fitted with the support block through an opening, the floating nut is set to rotate freely, and the opening abuts against the end of the support block near the first screw.

[0012] In some embodiments, the vertical locking assembly includes a base plate and a supporting assembly; the annular portion is provided with a plurality of locking member mounting slots at equal intervals along the circumferential direction, the base plate is provided with a plurality of third through holes, and the base plate is fixed to the locking member mounting slots by locking bolts passing through the third through holes; the supporting assembly is fixedly connected to the base plate and abuts against the spherical end cap.

[0013] In some embodiments, the supporting assembly includes a pressure plate, a second screw, a fixing nut, and an adjusting nut; the pressure plate is provided with a transverse adjusting groove that extends vertically through the pressure plate, the base plate is provided with a fixing hole, the second screw passes through the fixing hole and the transverse adjusting groove, the fixing nut is rotated from the bottom end of the second screw to abut against the bottom surface of the base plate, and the pressure plate moves up and down along the length of the second screw; the adjusting nut is rotated from the top end of the second screw to abut against the transverse adjusting groove, and the bottom of the pressure plate abuts against the spherical end cap.

[0014] In some embodiments, the pressure plate is further provided with a guide hole that penetrates the pressure plate, and a third bolt is provided in the guide hole, with the nut of the third bolt abutting against the top surface of the base plate.

[0015] The beneficial effects of the technical solution provided in this application include:

[0016] This application provides a quick-clamping fixture for machining the inner curved surface of a spherical head. The fixture's main structure is a platform with space provided to fit and fix the spherical head during machining. A hemispherical groove is provided on the top surface, specifically designed to accommodate the spherical head. The groove shape conforms to the inner curved surface of the spherical head. The annular portion allows for the installation of a vertical locking component, which firmly secures the spherical head through vertical support, preventing it from shaking or loosening during machining. An elastic leveling component is located at the bottom of the hemispherical groove to compensate for minor unevenness of the spherical head, ensuring precise contact between the head and the groove bottom during clamping and improving machining accuracy. Diagonal bracing components are evenly distributed along the groove wall, obliquely supporting the spherical head and providing additional lateral support to enhance stability. This is particularly effective during fine machining, significantly reducing head displacement caused by uneven machining forces. The entire tooling process is as follows: After the spherical head is placed in the hemispherical groove, the elastic leveling component first ensures good contact at the bottom. Then, the vertical locking component is adjusted to lock the spherical head in place, ensuring it will not move or deviate during processing. The diagonal bracing component provides additional support, further enhancing the fixing effect and providing better stability during processing. This solves the problem in related technologies where it is inconvenient to clamp and fix the spherical head, and the product is prone to shaking during processing, thus reducing its quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the cylindrical pedestal structure provided in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of a platform for clamping and fixing a spherical head according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the vertical locking assembly structure provided in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the base plate structure provided in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the pressure plate structure provided in an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the first screw structure provided in an embodiment of this application;

[0024] Figure 7 This is a schematic diagram of the diagonal bracing component structure provided in an embodiment of this application;

[0025] Figure 8 This is a schematic diagram of the elastic leveling component structure provided in the embodiments of this application;

[0026] Figure 9 This is a schematic cross-sectional view of the elastic leveling component provided in an embodiment of this application.

[0027] Figure 10 This is a schematic diagram of the lower base structure provided in an embodiment of this application;

[0028] Figure 11 This is a schematic diagram of the upper base structure provided in an embodiment of this application.

[0029] In the diagram: 1. Hemispherical groove; 2. Base; 21. Annular part; 22. First operating port; 23. Second operating port; 24. Fourth operating port; 25. Third operating port; 3. Vertical locking assembly; 31. Base plate; 311. Fixing hole; 32. Third through hole; 33. Pressure plate; 331. Horizontal adjustment groove; 332. Guide hole; 34. Second screw; 35. Adjusting nut; 36. Third bolt; 4. Elastic leveling assembly; 41. Upper base; 42. Lower base; 43. First bolt; 44. First through hole; 45. Second through hole; 46. Spring; 5. Diagonal brace assembly; 51. First screw; 52. Floating nut; 53. Extension rod; 54. Support block; 6. Washer; 7. Second bolt; 8. Locking bolt. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] This application provides a quick clamping fixture for machining the inner curved surface of a spherical head, which can solve the problem in related technologies that it is inconvenient to clamp and fix the spherical head, and the product is prone to shaking during the machining process, which reduces its quality.

[0032] Since existing CNC machine tools mainly rely on chucks and jaws for positioning and clamping when machining spherical heads, there are clamping difficulties for machining the inner curved surfaces of large spherical heads. Conventional processes use welded tooling plates for clamping, which is time-consuming and labor-intensive. Furthermore, due to the thin wall thickness of the product, uneven force on the tool during machining can easily cause vibration, thus reducing product quality. Therefore, a tooling suitable for rapid clamping is designed. First, a main structure of the tooling is designed, with grooves that fit the spherical head and are required for its machining and fixing, and whose shape conforms to the inner curved surface of the spherical head. Second, components with corresponding unique structures are set within the grooves. These components assist in leveling the bottom of the spherical head and fix it laterally and vertically, preventing it from shaking during machining. This solves the problem of inconvenient clamping and fixing of spherical heads and the easy shaking during machining that reduces product quality.

[0033] refer to Figure 1-11 ,in Figure 1 This is a schematic diagram of the cylindrical pedestal structure provided in the embodiments of this application; a quick clamping fixture for machining the inner curved surface of a spherical head includes a pedestal 2, the top surface of which is provided with a hemispherical groove 1 to accommodate the spherical head, and the top surface of the pedestal 2 is also provided with an annular portion 21 that is flush with the groove opening of the hemispherical groove 1. Multiple vertical locking components 3 are provided at equal intervals along the circumferential direction on the annular portion 21 for vertically supporting and fixing the spherical head; multiple elastic leveling components 4 are provided at the bottom of the groove of the hemispherical groove 1; multiple inclined support components 5 are provided at equal intervals along the circumferential direction of the groove wall of the hemispherical groove 1 for obliquely supporting and fixing the spherical head.

[0034] In this structural setup, the platform 2 serves as the main structure of the tooling, providing space to fit and fix the spherical head during processing. A hemispherical groove 1 is located on the top surface, specifically designed to accommodate the spherical head. The shape of the hemispherical groove 1 conforms to the inner curved surface of the spherical head. The annular portion 21 is designed for the installation of the vertical locking assembly 3, which firmly fixes the spherical head vertically, preventing it from shaking or loosening during processing. An elastic leveling assembly 4 is located at the bottom of the hemispherical groove 1 to compensate for minor unevenness of the spherical head, ensuring precise contact between the spherical head and the groove bottom during clamping, thus improving processing accuracy. Diagonal bracing assemblies 5 are evenly distributed along the groove wall of the hemispherical groove 1, obliquely supporting the spherical head and providing additional lateral support to enhance stability. Especially during fine processing, this significantly reduces head displacement caused by uneven processing force. The entire tooling process is as follows: After the spherical end cap is placed in the hemispherical groove 1, the elastic leveling component 4 first ensures good contact at its bottom. Then, the vertical locking component 3 is adjusted to vertically lock the spherical end cap, ensuring it will not move or deviate during processing. The diagonal bracing component 5 provides additional support, further enhancing the fixing effect and providing better stability during processing. This solves the problem in related technologies where it is inconvenient to clamp and fix the spherical end cap, and the product is prone to shaking during processing, thus reducing its quality.

[0035] In some preferred embodiments, the platform 2 is a cylindrical platform with a hollow interior; the side wall of the cylindrical platform is provided with a plurality of first operating ports 22, and the bottom surface is provided with a plurality of second operating ports 23; the groove wall of the hemispherical groove 1 is provided with a fourth operating port 24 at equal intervals, which communicates with the first operating ports 22 and the second operating ports 23.

[0036] In this embodiment, a cylindrical platform is chosen as the basic structure of the tooling through this structural design. It should be noted that the platform 2 can also be of other shapes, with a groove on the top surface for the spherical head to fit into. The interior of the cylindrical platform is hollow. This design facilitates subsequent processing of the spherical head by other tooling or manual intervention after it is clamped and fixed, and also reduces the overall weight. Other components, such as cylinders, hydraulic systems, or cooling piping systems, can also be housed inside. The hollowed-out design increases the operability of the tooling. Multiple first operating ports 22 are evenly distributed on the sidewalls of the cylindrical platform, allowing workers to operate from different angles during processing and maintenance. Multiple second operating ports 23 are provided on the bottom surface, also to improve operational flexibility. A fourth operating port 24, communicating with the first and second operating ports 22 and 23, is provided at equal intervals on the wall of the hemispherical groove 1, facilitating adjustment, monitoring, and maintenance during processing. By introducing a cylindrical base, an internal hollow design, and multiple operating ports, this quick-clamping tooling for machining the inner curved surface of spherical heads not only improves the operating efficiency and flexibility of the equipment, but also provides higher precision during the machining process.

[0037] In some preferred embodiments, the bottom of the hemispherical groove 1 is provided with a third operating port 25 that penetrates the cylindrical base; a plurality of elastic leveling components 4 are located on the periphery of the third operating port 25 and are distributed at equal intervals along the circumference.

[0038] With this structural design, the third operating port 25 is located at the bottom of the hemispherical groove 1 and extends through the cylindrical base. This design allows the workpiece to contact or connect with the worktable below through the operating port during processing, thus providing better support and operability. Multiple flexible leveling components 4 are evenly distributed around the periphery of the third operating port 25, arranged at equal intervals along the circumference. This design ensures that pressure is effectively distributed and stability is improved during installation and adjustment. These flexible leveling components 4 can absorb shocks and vibrations, enhance the tooling's anti-interference ability, and help maintain high precision during processing. When the spherical head is clamped and fixed, the flexible leveling components 4 can be finely adjusted according to the weight and position of the workpiece to ensure that the workpiece remains level. This design can be widely used in industries requiring high-precision curved surface processing; by setting the third operating port 25 at the bottom of the hemispherical groove 1 and the equally spaced flexible leveling components 4, the stability, efficiency, and flexibility of the entire spherical head internal curved surface processing quick clamping tooling are significantly improved.

[0039] In some preferred embodiments, the elastic leveling component 4 includes an upper base 41, a lower base 42, and a first bolt 43. Both the upper base 41 and the lower base 42 are provided with a plurality of first through holes 44. The platform 2 is provided with a plurality of first mounting slots that communicate with the bottom of the hemispherical groove 1. The lower base 42 is fixed to the bottom of the first mounting slot by a locking bolt 8 passing through the first through hole 44. The upper base 41 is fixed to the opening of the first mounting slot by a locking bolt 8 passing through the first through hole 44. The upper base 41 is provided with a second through hole 45 through which the first bolt 43 passes. The nut of the first bolt 43 abuts against the bottom of the upper base 41, and the nut is connected to the lower base 42 by a spring 46.

[0040] In this embodiment, through this structural design, the lower base 42 can be fixed to the bottom of the first mounting groove on the base 2 by locking bolts 8, while the upper base 41 is fixed to the opening of the first mounting groove on the base 2 by locking bolts 8, and both are achieved by locking bolts 8 passing through the first through hole 44; furthermore, the upper base 41 has a second through hole 45 in the middle, through which the first bolt 43 can pass. It should be noted that the nut of the first bolt 43 is located below the upper base 41, so that the first bolt 43 can abut against the upper base 41. Furthermore, the nut is connected to one end of the spring 46, and the other end of the spring 46 is connected to the lower base 42, while the end of the first bolt 43 away from the nut protrudes outside the first mounting groove, thus forming a complete elastic leveling component 4; during implementation, when the spherical end cap is placed, its bottom contacts and abuts against the first bolt 43, and the first bolt 43, after receiving downward pressure, squeezes the spring and produces a certain deformation, thereby leveling the bottom of the spherical end cap accordingly. Through a reasonable structural layout and flexible design, the tooling can adapt to various working conditions during processing, ensuring good contact at its bottom.

[0041] In some preferred embodiments, a washer 6 and a second bolt 7 are also included. The washer 6 has a retaining groove, and the bottom of the retaining groove has a through hole that passes through the washer 6. The first bolt 43 has a threaded hole at one end away from its nut. The second bolt 7 passes through the through hole and is turned into the threaded hole, and its top abuts against the retaining groove to fix the washer 6 to the end of the first bolt 43 away from its nut.

[0042] In this embodiment, through this structural design, the washer 6 is provided with a retaining groove to provide a stable pressing surface when the washer 6 is fixed. The through hole penetrates the washer 6, facilitating the installation of the second bolt 7 and ensuring a reliable connection between the first bolt 43 and the washer 6. The second bolt 7 penetrates the through hole of the washer 6 and rotates into the threaded hole on the end of the first bolt 43 away from the nut. Its top abuts against the retaining groove of the washer 6, ensuring that the washer 6 remains stable under force, thereby enhancing the overall structural tightness. That is, based on the contact between the first bolt 43 and the bottom of the spherical head, an additional washer 6 is added to the end of the first bolt 43 away from its nut, replacing the direct contact of the first bolt 43, which can provide stronger wear resistance and corrosion resistance. In the new design, the integration of the washer 6 and the second bolt 7 improves the adjustment capability and stability of the elastic leveling component 4, making it more adaptable in the quick clamping tooling for machining the inner curved surface of the spherical head.

[0043] In some preferred embodiments, the plurality of diagonal bracing components 5 are divided into two groups, and the two groups of diagonal bracing components 5 are arranged at equal intervals along the circumferential wall of the hemispherical groove 1, and the distribution positions of the two groups of diagonal bracing components 5 respectively form two distribution circles; the radius of the distribution circle formed by the first group of diagonal bracing components 5 is larger than the radius of the distribution circle formed by the second group of diagonal bracing components 5.

[0044] In this embodiment, multiple sets of diagonal bracing components 5 are designed to improve overall support and stability. The diagonal bracing components 5 are divided into two groups, located at different positions on the wall of the hemispherical groove 1. Specifically, the annular areas in the middle and upper middle parts of the hemispherical groove 1 are defined as the first mounting part and the second mounting part, respectively. The two sets of diagonal bracing components 5 are respectively positioned in the first and second mounting parts, i.e., the circular areas. This design facilitates the initial positioning and rotation of the spherical head during the process of lowering it, requiring less effort. Furthermore, it prevents the spherical head from shaking or loosening during processing, especially during fine machining, significantly reducing head displacement caused by uneven processing force. By dividing the multiple diagonal bracing components 5 into two groups, located in the first and second mounting parts respectively, the hemispherical groove 1 exhibits better load-bearing and adjustment capabilities during use.

[0045] In some preferred embodiments, the hemispherical groove 1 has a second mounting groove on its groove wall and located at two distribution circles; the inclined brace assembly 5 includes a first screw 51 and a floating nut 52; the first screw 51 is fixed to the second mounting groove, and one end of the first screw 51 located outside the second mounting groove is connected to a support block 54 by an extension rod 53; the floating nut 52 is hollowed out, and one end is fitted with the support block 54 through an opening, the floating nut 52 is set to rotate freely, and the opening abuts against the end of the support block 54 near the first screw 51.

[0046] In this embodiment, the first and second mounting parts are both provided with second mounting grooves to facilitate the installation and adjustment of the diagonal brace assembly 5. This design provides greater flexibility, allowing the diagonal brace assembly 5 to be adjusted within a certain range, thereby better adapting to different working conditions. The first screw 51 is fixed in the second mounting groove, and the floating nut 52 is hollowed out with an opening, allowing it to be fitted onto the abutment block 54, improving flexibility. The design of the floating nut 52 allows it to rotate freely during stress, reducing friction and wear, extending service life, and also reducing the force required to adjust the spherical head. The first screw 51 is located at one end outside the second mounting groove and is connected to the abutment block 54 via an extension rod 53. In this way, the abutment block 54 can be flexibly adjusted and abut against the side wall of the spherical head; the cooperation between the abutment block 54 and the floating nut 52 allows the floating nut 52 to receive the support of the abutment block 54 when abutting the spherical head, effectively transmitting and dispersing the force. During assembly and adjustment, operators can precisely adjust the support angle and height of the diagonal brace assembly 5 by adjusting the relative positions of the first screw 51 and the floating nut 52 in the second mounting slot according to processing requirements, thereby enhancing the flexibility and load-bearing capacity of the structure.

[0047] In some preferred embodiments, the vertical locking assembly 3 includes a base plate 31 and a supporting assembly; the annular portion 21 is provided with a plurality of locking member mounting grooves at equal intervals along the circumference, the base plate 31 is provided with a plurality of third through holes 32, and the base plate 31 is fixed to the locking member mounting groove by means of locking bolts 8 passing through the third through holes; the supporting assembly is fixedly connected to the base plate 31 and supports the spherical end cap.

[0048] In this embodiment, the base plate 31 is provided with multiple third through holes 32 for the insertion of locking bolts 8, ensuring that the base plate is securely fixed in the locking member mounting groove. The abutment assembly is mechanically connected to the base plate 31; its main function is to abut the spherical head, ensuring its stable position during operation. The locking bolts 8 secure the base plate 31 to the locking member mounting groove through the third through holes 32, ensuring structural tightness and preventing loosening due to vibration or other external forces.

[0049] In some preferred embodiments, the supporting assembly includes a pressure plate 33, a second screw 34, a fixing nut, and an adjusting nut 35; the pressure plate 33 is provided with a transverse adjusting groove 331 that runs vertically through the pressure plate 33, and the base plate 31 is provided with a fixing hole 311. The second screw 34 passes through the fixing hole 311 and the transverse adjusting groove 331. The fixing nut is rotated from the bottom end of the second screw 34 to abut against the bottom surface of the base plate 31, and the pressure plate 33 moves up and down along the length of the second screw 34; the adjusting nut 35 is rotated from the top end of the second screw 34 to abut against the transverse adjusting groove 331, and the bottom of the pressure plate 33 abuts against the spherical end cap.

[0050] In this structural design, the pressure plate 33 is the core component of the supporting assembly, and it is provided with a transverse adjustment groove 331 that extends along the length of the pressure plate 33. This design allows for transverse and longitudinal movement of the pressure plate 33, facilitating adjustment of the contact pressure and position with the spherical head as needed. The second screw 34 is a key component connecting the pressure plate 33 and the base plate 31, with one end passing through the fixing hole 311 and moving through the transverse adjustment groove 331. This allows the pressure plate 33 to move freely up and down along the length of the second screw 34. The fixing nut is located at the bottom end of the second screw 34, contacting the bottom surface of the base plate 31, and serves to fix the second screw 34. The adjusting nut 35 is located at the top of the second screw 34 and abuts against the transverse adjustment groove 331. Adjustment is achieved by rotating the adjusting nut 35 to adapt to different working conditions. The design of the supporting assembly enhances its adjustability.

[0051] In some preferred embodiments, the pressure plate 33 is further provided with a guide hole 332 penetrating the pressure plate 33, and a third bolt 36 is provided on the guide hole 332, with the nut of the third bolt 36 abutting against the top surface of the base plate 31.

[0052] With this structural design, the guide hole 332 is a through hole in the pressure plate 33, designed to provide additional guidance and support. Its positional design ensures that the pressure plate 33 is more stable during adjustment and less prone to lateral displacement or tilting. The third bolt 36 passes through the guide hole 332, with its nut abutting against the top surface of the base plate 31. This design ensures that the third bolt 36 maintains the positioning of the pressure plate 33 during operation while providing the necessary support force. The third bolt 36 can be fine-tuned as needed, thereby flexibly maintaining the optimal contact between the pressure plate and the spherical head.

[0053] The beneficial effects of this invention include:

[0054] The base 2 serves as the main structure of the tooling, providing space to fit and fix the spherical head during machining. A hemispherical groove 1 is located on the top surface, specifically designed to accommodate the spherical head. The shape of the hemispherical groove 1 conforms to the inner curved surface of the spherical head. The annular portion 21 is designed for the installation of the vertical locking assembly 3, which firmly fixes the spherical head vertically, preventing it from shaking or loosening during machining. An elastic leveling assembly 4 is located at the bottom of the hemispherical groove 1 to compensate for minor unevenness of the spherical head, ensuring precise contact between the spherical head and the groove bottom during clamping, thus improving machining accuracy. Diagonal bracing assemblies 5 are evenly distributed along the groove wall of the hemispherical groove 1, obliquely supporting the spherical head and providing additional lateral support to enhance stability. Especially during fine machining, this significantly reduces head displacement caused by uneven machining force. The entire tooling process is as follows: After the spherical end cap is placed in the hemispherical groove 1, the elastic leveling component 4 first ensures good contact at its bottom. Then, the vertical locking component 3 is adjusted to vertically lock the spherical end cap, ensuring it will not move or deviate during processing. The diagonal bracing component 5 provides additional support, further enhancing the fixing effect and providing better stability during processing. This solves the problem in related technologies where it is inconvenient to clamp and fix the spherical end cap, and the product is prone to shaking during processing, thus reducing its quality.

[0055] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0056] It should be noted that in this application, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A quick-clamping fixture for machining the inner curved surface of a spherical head, characterized in that, It includes: The platform (2) has a hemispherical groove (1) on its top surface to accommodate the spherical end cap, and the platform (2) also has an annular part (21) that is level with the opening of the hemispherical groove (1). The annular part (21) is provided with a plurality of vertical locking components (3) at equal intervals along the circumferential direction for vertically supporting and fixing the spherical end cap. Multiple elastic leveling components (4) are disposed at the bottom of the hemispherical groove (1); Multiple diagonal bracing components (5) are arranged at equal intervals along the circumferential wall of the hemispherical groove (1) to obliquely support and fix the spherical end cap; The elastic leveling component (4) includes an upper base (41), a lower base (42) and a first bolt (43). Both the upper base (41) and the lower base (42) are provided with a plurality of first through holes (44). The base (2) is provided with a plurality of first mounting slots that communicate with the bottom of the hemispherical groove (1). The lower base (42) is fixed to the bottom of the first mounting slot by a locking bolt (8) passing through the first through hole (44). The upper base (41) is fixed to the opening of the first mounting slot by the locking bolt (8) passing through the first through hole (44). The upper base (41) is provided with a second through hole (45) for the first bolt (43) to pass through. The nut of the first bolt (43) abuts against the bottom of the upper base (41), and the nut is connected to the lower base (42) by a spring (46). The multiple inclined bracing components (5) are divided into two groups. The two groups of inclined bracing components (5) are arranged at equal intervals along the circumferential wall of the hemispherical groove (1). The distribution positions of the two groups of inclined bracing components (5) form two distribution circles respectively. The radius of the distribution circle formed by the first set of diagonal bracing components (5) is greater than the radius of the distribution circle formed by the second set of diagonal bracing components (5); The hemispherical groove (1) has a second mounting groove on its groove wall and located at the two distribution circles; The diagonal bracing assembly (5) includes a first screw (51) and a floating nut (52); The first screw (51) is fixed to the second mounting groove, and the end of the first screw (51) located outside the second mounting groove is connected to a support block (54) by an extension rod (53). The floating nut (52) is hollowed out, and one end is fitted with the abutment block (54) through an opening. The floating nut (52) is set to rotate freely, and the opening abuts against the end of the abutment block (54) near the first screw (51).

2. The quick-clamping fixture for machining the inner curved surface of a spherical head as described in claim 1, characterized in that: The platform (2) is a cylindrical platform, and the interior of the cylindrical platform is a hollow structure; The cylindrical platform has multiple first operating ports (22) on its side wall and multiple second operating ports (23) on its bottom surface. The hemispherical groove (1) has a fourth operating port (24) that is equally spaced on the groove wall and communicates with the first operating port (22) and the second operating port (23).

3. The quick-clamping fixture for machining the inner curved surface of a spherical head as described in claim 2, characterized in that: The bottom of the hemispherical groove (1) is provided with a third operating port (25) that penetrates the cylindrical base. Multiple elastic leveling components (4) are located on the periphery of the third operating port (25) and are distributed at equal intervals along the circumference.

4. The quick-clamping fixture for machining the inner curved surface of a spherical head as described in claim 1, characterized in that: It also includes a washer (6) and a second bolt (7), wherein the washer (6) is provided with a retaining groove and the bottom of the retaining groove is provided with a through hole penetrating the washer (6); The first bolt (43) has a threaded hole at the end away from its nut; The second bolt (7) passes through the through hole and is turned into the threaded hole, and its top abuts against the abutment groove to fix the washer (6) to the end of the first bolt (43) away from its nut.

5. The quick-clamping fixture for machining the inner curved surface of a spherical head as described in claim 1, characterized in that: The vertical locking assembly (3) includes a base plate (31) and a supporting assembly; The annular portion (21) is provided with multiple locking component mounting slots at equal intervals along the circumferential direction, and the base plate (31) is provided with multiple third through holes (32). The base plate (31) is fixed to the locking component mounting slot by means of locking bolts (8) passing through the third through holes. The abutment component is fixedly connected to the base plate (31) and abuts against the spherical end cap.

6. The quick-clamping fixture for machining the inner curved surface of a spherical head as described in claim 5, characterized in that: The supporting assembly includes a pressure plate (33), a second screw (34), a fixing nut, and an adjusting nut (35); The pressure plate (33) is provided with a horizontal adjustment groove (331) that runs vertically through the pressure plate (33), and the base plate (31) is provided with a fixing hole (311). The second screw (34) passes through the fixing hole (311) and the horizontal adjustment groove (331). The fixing nut is rotated from the bottom end of the second screw (34) and abuts against the bottom surface of the base plate (31). The pressure plate (33) moves up and down along the length of the second screw (34). The adjusting nut (35) is rotated from the top of the second screw (34) to abut against the transverse adjusting groove (331), and the bottom of the pressure plate (33) abuts against the spherical end cap.

7. The quick-clamping fixture for machining the inner curved surface of a spherical head as described in claim 6, characterized in that: The pressure plate (33) is also provided with a guide hole (332) that penetrates the pressure plate (33), and a third bolt (36) is provided in the guide hole (332), with the nut of the third bolt (36) abutting against the top surface of the base plate (31).

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