General tool device for synchronous machining of three surfaces of inclined cover and valve body

Abstract

The utility model provides a kind of general tooling device of three-face synchronous processing of inclined cover and valve body, belong to general tooling device technical field, this inclined cover and valve body three-face synchronous processing general tooling device includes basic support component, three-dimensional positioning system, synchronous pressing mechanism and generalization module;The basic support component provides installation base for entire device, the three-dimensional positioning system is set on the basic support component to realize the multi-angle positioning of workpiece, the synchronous pressing mechanism is fixed with the three-dimensional positioning system to workpiece and is pressed tightly, the generalization module is set on the three-dimensional positioning system to adapt to different specifications workpiece, the basic support component includes lathe flange and fixture bottom plate, the lathe flange is fixedly connected with the fixture bottom plate, and it is collectively constituted the basic installation platform of device, by integrated structure control cumulative machining error, overcome the defect that traditional tooling is low in precision, poor in versatility multiple clamping.

Description

Technical Field

[0001] This utility model belongs to the field of general tooling device technology, specifically, it relates to a general tooling device for simultaneous processing of three sides of a slanted cover and a valve body. Background Technology

[0002] In the field of machining, general-purpose tooling devices are key auxiliary equipment for achieving precise workpiece positioning and stable clamping to cooperate with machining equipment in completing cutting, boring, and other processes. They are widely used in the mass production of parts such as valve bodies and slanted covers. These devices typically need to possess core performance characteristics such as accurate positioning, stable clamping, and strong adaptability. Their structural design directly affects machining efficiency, accuracy, and production costs. High-quality general-purpose tooling devices can reduce the number of workpiece clamping operations, reduce human error, and provide reliable guarantees for large-scale production.

[0003] However, traditional general-purpose tooling has many drawbacks in the machining of valve bodies and slanted caps. In valve body machining, traditional tooling often employs a split-type positioning structure, requiring multiple clamping operations on different machining surfaces such as the end face and side face of the valve body. Each clamping requires recalibration, resulting in fragmented processes and significantly reduced machining efficiency. Furthermore, the cumulative positioning errors from multiple clamping operations often exceed 0.25mm, making it difficult to meet the high-precision machining requirements of valve bodies. For irregularly shaped parts like slanted caps, due to their tilted structure, traditional tooling lacks targeted angle adjustment and stable clamping structures, easily leading to workpiece wobbling and misalignment during clamping, severely affecting machining quality. Existing split-type positioning tooling and dedicated angle fixtures also have significant shortcomings. Split-type positioning tooling requires frequent replacement of different positioning components to adapt to different machining surfaces, which is not only cumbersome but also creates additional connection gaps due to component replacement, further increasing machining errors. While dedicated angle fixtures can machine workpieces at certain angles, their application is limited. A single fixture typically only corresponds to parts of a specific angle and size. When machining workpieces of different sizes or angles, the entire fixture set must be changed, with changeover adjustments taking over 30 minutes, severely impacting production continuity. Furthermore, most of these traditional tooling fixtures lack integrated effective clamping mechanisms, relying on external tools for workpiece fixation. This is not only inconvenient to operate but also makes it difficult to ensure uniform clamping force, further exacerbating the problem of insufficient machining accuracy. Simultaneously, the lack of versatility in the structural design of traditional tooling forces companies to equip multiple sets of tooling for parts of different sizes, significantly increasing equipment investment costs and storage space requirements. Utility Model Content

[0004] In view of this, the present invention provides a universal tooling device for simultaneous three-sided machining of the slanted cover and valve body, which realizes one-time three-sided machining of the slanted cover and valve body, improves the adaptability of multiple specifications, and controls the cumulative machining error through integrated structure, overcoming the defects of low accuracy and poor versatility of traditional tooling with multiple clamping.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a universal tooling device for simultaneous three-sided machining of slanted caps and valve bodies, comprising a basic support assembly, a three-way positioning system, a synchronous clamping mechanism, and a universal module. The basic support assembly provides the installation foundation for the entire device. The three-way positioning system is set on the basic support assembly to achieve multi-angle positioning of the workpiece. The synchronous clamping mechanism cooperates with the three-way positioning system to clamp and fix the workpiece. The universal module is set on the three-way positioning system to adapt to workpieces of different specifications.

[0007] The technical advantages of this utility model's universal tooling device for simultaneous three-sided machining of slanted caps and valve bodies are as follows: By integrating four core modules—basic support components, a three-way positioning system, a synchronous clamping mechanism, and a universal module—an integrated machining solution for slanted caps and valve bodies is achieved. Breaking through the limitations of traditional tooling's single-function design, it integrates multi-angle positioning, synchronous clamping, and specification adaptation functions into one unit for the first time. From a structural design perspective, it solves the problem of low efficiency caused by multiple clamping operations, providing a basic framework for simultaneous three-sided machining and making it possible to complete multi-sided machining in a single clamping operation.

[0008] Based on the above technical solution, the universal tooling device for simultaneous three-sided machining of the slanted cover and valve body of this utility model can be further improved as follows:

[0009] The basic support components include a lathe flange and a fixture base plate. The lathe flange and the fixture base plate are fixedly connected to each other and together form the basic installation platform of the device.

[0010] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the fixed connection structure between the lathe flange and the fixture base plate ensures a rigid connection between the tooling device and the machining equipment, and the flatness error of the foundation mounting platform is controlled within 0.05mm. This integrated foundation design reduces the connection gap of the split structure, provides a stable installation benchmark for the subsequent positioning system and clamping mechanism, directly reduces the machining error caused by foundation shaking, and meets the machining requirements of heavy valve bodies.

[0011] Furthermore, the three-way positioning system includes an angle plate, which is disposed above the base support component. The angle plate and the base support component are connected by an adjustment structure to achieve an angle adjustment of 15°-75°.

[0012] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the adjustable structure design of the inclined plate and the basic support assembly realizes a wide range of tilt angle adjustment from 15° to 75°. Compared with the fixed angle design of dedicated angle fixtures, the adjustable structure allows the same tooling to be adapted to the machining of workpieces with different tilt angles, saving the cost of changing to dedicated fixtures and ensuring that the angle tolerance of inclined surface machining is controlled within the design range.

[0013] Furthermore, the inclined plate is provided with a circular processing area with spoke support, which is used to place the inclined cover or valve body workpiece to be processed.

[0014] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The circular machining area structure with spoke support reduces material consumption while ensuring the rigidity of the tooling. The hollow structure formed by the spoke design facilitates chip removal during the machining process, preventing chip accumulation from affecting machining accuracy. The contact surface between the circular machining area and the workpiece is hardened (hardness HRC50-55), extending the service life of the tooling and providing a uniform support surface for the workpiece, reducing local deformation.

[0015] Furthermore, the synchronous clamping mechanism includes three sets of radially distributed clamping units. Each set of clamping units includes a clamping nut and a tightening screw. The clamping nut and the tightening screw work together to form a triangular constraint clamping on the workpiece placed in the processing area.

[0016] The beneficial effects of the above-mentioned improved scheme are as follows: The three radially distributed clamping units adopt the triangular constraint principle, and through the linkage of the clamping nut and the tightening screw, the radial uniform force on the workpiece is achieved. Compared with the traditional single-sided clamping method, the triangular synchronous pressure avoids workpiece displacement caused by unilateral force. The manually operated clamping structure does not require an additional power source, is suitable for processing environments without air / hydraulic power sources, and the clamping force of a single unit can reach 5000N, ensuring that the workpiece does not loosen during processing.

[0017] Furthermore, the synchronous clamping mechanism also includes a limiting block and a positioning mandrel. The limiting block and the positioning mandrel are disposed in the circular processing area and cooperate with the three sets of clamping units to form a triangular constraint and fixation of the workpiece.

[0018] The beneficial effects of the above-mentioned improved scheme are as follows: the cooperation of the limiting block, the positioning mandrel, and the three sets of clamping units forms a multi-constraint fixation; the positioning mandrel centers the inner hole of the workpiece (centering accuracy ±0.02mm); the limiting block restricts the axial displacement of the workpiece; and the clamping units provide radial pressure. This composite positioning method solves the problem of insufficient clamping stability for irregularly shaped parts such as slanted covers, and meets the requirements of high-precision milling and boring.

[0019] Furthermore, the universal module includes a replaceable bushing and a vertical plate. The replaceable bushing is fitted onto the positioning mandrel, and the vertical plate is mounted on the basic support assembly. The vertical plate has a T-slot for quick adjustment and change of configuration.

[0020] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the combination design of the replaceable bushing and the vertical plate T-slot enables rapid changeover of workpieces of various specifications. The replaceable bushing adapts to different workpiece inner hole specifications by changing different inner diameter sizes (φ20-φ100mm), and the vertical plate T-slot eliminates the need for re-drilling when adjusting the position of the positioning component. The changeover adjustment time is shortened from more than 30 minutes in the traditional way to less than 5 minutes. The applicable specification range of the tooling is expanded by more than 3 times, and the procurement cost of special tooling is significantly reduced.

[0021] Furthermore, the adjustment structure includes an adjustment bolt and a positioning pin disposed between the base support component and the inclined plate. By adjusting the tightness of the adjustment bolt and cooperating with the positioning action of the positioning pin, the tilt angle of the inclined plate can be adjusted.

[0022] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the combined adjustment structure of the adjusting bolt and the positioning pin makes the tilt angle adjustment of the inclined plate both convenient and precise. The adjusting bolt achieves coarse positioning, while the positioning pin achieves precise angle positioning through different hole combinations, avoiding the angle drift problem of a single adjustment method.

[0023] Furthermore, the three sets of clamping units of the synchronous clamping mechanism are evenly distributed in the circumferential direction of the circular processing area, and the clamping nut and the tightening screw of each set of clamping units are connected by a linkage structure to achieve synchronous pressure application.

[0024] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The circumferentially evenly distributed design of the three clamping units ensures that the radial pressure on the workpiece is symmetrically distributed at 120°, and the force balance avoids the eccentric deformation of the workpiece. The linkage structure ensures that the three sets of screws apply pressure synchronously, and the radial displacement deviation of the workpiece during the clamping process is ≤0.03mm. This solves the problem of workpiece tilting caused by traditional single clamping points, provides stable clamping conditions for simultaneous three-sided machining, and ensures that the machining accuracy of the end face, side face, and inclined face remains consistent.

[0025] Furthermore, the replaceable bushing is available in various sizes to accommodate different specifications of slanted cover or valve body workpieces. The replaceable bushing is detachably connected to the positioning mandrel, and different sizes of replaceable bushings can be used to adapt to the processing requirements of workpieces of various specifications.

[0026] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the detachable design and multiple size specifications of the replaceable bushing enable the tooling to be quickly adapted to different valve body and valve cover inner hole specifications within the range of φ20-φ100mm.

[0027] Compared with the prior art, the beneficial effects of the universal tooling device for simultaneous three-sided machining of slanted caps and valve bodies provided by this utility model are:

[0028] This invention brings significant benefits in several aspects through optimized structural design and working mechanism. In terms of processing efficiency, it enables one-time three-sided machining of slanted caps and valve bodies, integrating the traditional three-clamping process for end face, side face, and slanted face machining into a single clamping operation. This eliminates the calibration and adjustment time required for multiple clamping operations, significantly shortening the production cycle and greatly improving processing efficiency. Simultaneously, the universal structural design greatly reduces changeover and adjustment time. Operators can quickly adapt to workpieces of different specifications without complex tooling changes and adjustments, effectively reducing production preparation time and improving equipment utilization.

[0029] In terms of machining accuracy, the integrated positioning and clamping structure significantly reduces cumulative machining errors. The three-way positioning system provides a stable basic positioning reference, the precise angle adjustment of the inclined plate ensures the angular accuracy of the inclined surface machining, and the synchronous clamping mechanism achieves uniform force clamping of the workpiece through the triangular constraint principle, avoiding workpiece deformation and displacement caused by improper clamping, thus effectively controlling machining errors and meeting the machining requirements of high-precision valve bodies and inclined cover parts;

[0030] In terms of cost control, the standardized modular design significantly reduces tooling costs. The replaceable bushings and T-slot structure of the vertical plate allow a single tooling unit to cover the machining of parts of various specifications, reducing the number of dedicated tooling units required and lowering equipment investment costs. Simultaneously, the optimized structure extends the tooling's lifespan, reducing replacement frequency and maintenance costs, ultimately saving companies substantial production costs over the long term.

[0031] In terms of ease of operation, the integrated structural design simplifies the operation process. The synchronized clamping mechanism requires no complex professional skills; operators can achieve stable fixation of the workpiece with a simple tightening action, reducing the skill requirements for operators. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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.

[0033] Figure 1 An example diagram of a universal tooling device for simultaneous machining of three sides of a slanted cover and a valve body;

[0034] Figure 2 This is the assembly drawing of the valve body tooling fixture of this utility model;

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 10. Basic support components; 20. Three-way positioning system; 21. Inclined plate; 30. Synchronous clamping mechanism; 31. Clamping unit; 32. Limiting block; 33. Positioning mandrel; 40. Universal module. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0038] like Figure 1 , Figure 2 The diagram shown is an example of a universal tooling device for simultaneous three-sided machining of a slanted cover and valve body provided by this utility model. It includes a basic support component 10, a three-way positioning system 20, a synchronous clamping mechanism 30, and a universal module 40. The basic support component 10 provides the installation foundation for the entire device. The three-way positioning system 20 is set on the basic support component 10 to realize multi-angle positioning of the workpiece. The synchronous clamping mechanism 30 cooperates with the three-way positioning system 20 to clamp and fix the workpiece. The universal module 40 is set on the three-way positioning system 20 to adapt to workpieces of different specifications.

[0039] In the above technical solution, the basic support component 10 includes a lathe flange and a fixture base plate. The lathe flange and the fixture base plate are fixedly connected to each other and together form the basic installation platform of the device.

[0040] Furthermore, in the above technical solution, the three-way positioning system 20 includes an inclined angle plate 21, which is disposed above the base support component 10. The inclined angle plate 21 and the base support component 10 are connected by an adjustment structure to achieve an inclination angle adjustment of 15°-75°.

[0041] Furthermore, in the above technical solution, the inclined plate 21 is provided with a circular processing area with spoke support, which is used to place the inclined cover or valve body workpiece to be processed.

[0042] Furthermore, in the above technical solution, the synchronous clamping mechanism 30 includes three sets of radially distributed clamping units 31. Each set of clamping units 31 includes a clamping nut and a tightening screw. The clamping nut and the tightening screw work together to form a triangular constraint clamping on the workpiece placed in the processing area.

[0043] Furthermore, in the above technical solution, the synchronous pressing mechanism 30 also includes a limiting block 32 and a positioning spindle 33. The limiting block 32 and the positioning spindle 33 are arranged in the circular processing area and cooperate with the three sets of pressing units 31 to form a triangular constraint and fixation of the workpiece.

[0044] Furthermore, in the above technical solution, the universal module 40 includes a replaceable bushing and a vertical plate. The replaceable bushing is sleeved on the positioning mandrel, and the vertical plate is set on the basic support component 10. A T-slot is reserved on the vertical plate for quick change-up and adjustment.

[0045] Furthermore, in the above technical solution, the adjustment structure includes an adjustment bolt and a positioning pin disposed between the base support component 10 and the inclined angle plate 21. By adjusting the tightness of the adjustment bolt and cooperating with the positioning action of the positioning pin, the tilt angle of the inclined angle plate 21 can be adjusted.

[0046] Furthermore, in the above technical solution, the three sets of clamping units 31 of the synchronous clamping mechanism 30 are evenly distributed in the circumferential direction of the circular processing area, and the clamping nut and the tightening screw of each set of clamping units 31 are connected by a linkage structure to achieve synchronous pressure application.

[0047] Furthermore, in the above technical solution, the replaceable bushing is provided with various sizes according to different specifications of slanted cover or valve body workpieces. The replaceable bushing and the positioning mandrel are detachably connected. By replacing the replaceable bushing of different sizes, the processing requirements of workpieces of various specifications can be adapted.

[0048] Example 1:

[0049] The core structure of this implementation includes a three-way positioning system, a manual synchronous clamping mechanism, and a universal module. The three-way positioning system consists of a lathe flange and a fixture base plate fixedly connected to form a basic platform. The inclined plate allows for tilt adjustment from 15° to 75° via adjusting bolts and locating pins. The adjusting bolts are used for coarse angle adjustment, while the locating pins achieve precise positioning through different hole combinations. The synchronous clamping mechanism employs a linkage structure of three sets of radially evenly distributed clamping nuts and tightening screws, forming a triangular constraint with limit blocks and a locating mandrel. The locating mandrel engages with the workpiece's inner hole for centering, and the limit blocks restrict the workpiece's axial displacement. The universal module includes a replaceable bushing and a vertical plate with a T-slot. The replaceable bushing is fitted onto the locating mandrel, and the T-slot on the vertical plate is used for quick adjustment of the limit block position.

[0050] This method is primarily applicable to the processing of small to medium batches of valve bodies and slanted cover parts in various specifications, and is especially suitable for processing environments without a pneumatic or hydraulic power source. In small machining plants or multi-variety, small-batch production lines, this implementation method requires no additional power unit; workpiece clamping can be completed manually, resulting in low equipment investment costs and simple, easy-to-learn operation.

[0051] In terms of technical performance, the manual synchronous clamping structure ensures uniform workpiece clamping force, and the triangular constraint controls the workpiece positioning error to within 0.05mm, with a cumulative machining error of ≤0.15mm, meeting high-precision machining requirements. The universal module reduces changeover adjustment time to less than 5 minutes, and one set of tooling can cover parts of various specifications, reducing tooling costs. The three processes are combined into a single clamping operation, improving machining efficiency. Furthermore, the manual operation structure is simple to maintain, has a low failure rate, and is suitable for production scenarios with limited equipment maintenance capabilities.

[0052] Example 2:

[0053] This implementation uses a quick-change angle adjustment structure in the three-way positioning system. The tilt plate replaces the traditional adjusting bolt with a gear and rack mechanism, enabling rapid adjustment and locking of the tilt angle. The meshing transmission of the gear and rack makes the angle adjustment more stable and precise. The synchronous clamping mechanism retains three sets of radially distributed clamping units. The cooperation method between the positioning mandrel and the limit block is the same as in implementation method one, but the universal module is further optimized. The replaceable bushing adopts a magnetic assisted positioning structure, and the T-slot of the vertical plate is equipped with a quick-locking bolt, achieving second-level fixation of the positioning components.

[0054] The main application scenarios are medium to large-scale batch production processes that require frequent changes in workpiece angles, such as assembly lines in valve manufacturing companies. In processing where frequent adjustments to workpiece tilt angles are necessary, the quick-change angle adjustment structure can significantly reduce changeover time and improve production continuity.

[0055] In terms of technical effectiveness, the rack and pinion angle adjustment mechanism improves angle adjustment accuracy to ±0.3°, reduces effort during adjustment, and provides good stability after angle locking, preventing angle deviation during processing. The magnetically assisted positioning replaceable bushing reduces replacement time to less than 30 seconds, and the time required for adjusting and fixing the limit block position with quick-lock bolts is reduced, resulting in an overall changeover efficiency improvement of 30% compared to the previous method. Cumulative processing errors are controlled within 0.12mm, further improving processing accuracy. The rack and pinion structure has high wear resistance, reducing the rate of angle adjustment accuracy decay after long-term use and extending the tooling's service life, making it suitable for high-intensity applications in large-volume continuous production.

[0056] Specifically, the principle of this utility model is as follows:

[0057] The technical principle of this utility model is based on the design concepts of precise positioning, stable clamping, and universal adaptability. It achieves efficient and high-precision parts machining through the collaborative work of multiple systems. The three-way positioning system constitutes the basic positioning framework of the entire fixture. The lathe flange and the fixture base plate are fixedly connected to form a rigid base platform, providing a stable installation reference for subsequent positioning and machining, ensuring that the fixture will not shake or shift due to external forces during machining. The connection structure between the inclined plate and the base platform adopts an adjustable design. By adjusting the components, the tilt angle of the inclined plate can be changed, allowing the inclined surface of the workpiece to precisely match the movement trajectory of the machining tool, meeting the machining requirements of inclined surfaces with different angles. Its angle adjustment principle is to change the relative positional relationship between the inclined plate and the base platform to achieve continuous adjustment of the tilt angle, while maintaining stable structural rigidity after adjustment.

[0058] The synchronous clamping mechanism utilizes the principle of triangular constraint to achieve stable workpiece clamping. Three sets of radially distributed clamping nuts and top screws form a symmetrical clamping force distribution. When the clamping nuts are tightened, the top screws simultaneously apply radial pressure to the workpiece. Combined with the action of the limiting blocks and the positioning mandrel, the workpiece is constrained and fixed from multiple directions. The positioning mandrel is inserted into the inner hole of the workpiece for centering and positioning, ensuring that the machining center of the workpiece is consistent with the positioning center of the tooling. The limiting blocks restrict the axial displacement of the workpiece, preventing it from moving axially during machining. The three sets of clamping components provide uniform clamping force radially, keeping the workpiece stable during machining and preventing positional displacement due to cutting forces. This multi-directional constraint clamping method effectively disperses clamping forces and reduces workpiece deformation during clamping.

[0059] The universal module adapts to various workpiece specifications through its interchangeable structure and flexible adjustment methods. Interchangeable bushings are replaced according to the inner diameter of different workpieces. The fit between the bushing and the positioning mandrel ensures centering accuracy for workpieces of different specifications. The replacement principle utilizes a detachable connection, allowing for quick bushing replacement to accommodate different inner diameters. The T-slots pre-reserved in the vertical plate facilitate the adjustment of positioning components such as limit blocks. Operators can quickly adjust the position of the positioning components according to the workpiece's dimensions using the T-slots without destructive modifications to the tooling, enabling rapid tooling changeover. The adjustment principle utilizes the guiding effect of the T-slots and the fixing effect of the fasteners, allowing the positioning components to move freely within a certain range and be stably fixed in the required position, thus adapting to the positioning needs of workpieces of different sizes.

Claims

1. A universal tooling device for simultaneous machining of three sides of a slanted cover and a valve body, characterized in that, It includes a basic support component, a three-way positioning system, a synchronous clamping mechanism, and a universal module; the basic support component provides the installation foundation for the entire device, the three-way positioning system is set on the basic support component to realize multi-angle positioning of the workpiece, the synchronous clamping mechanism cooperates with the three-way positioning system to clamp and fix the workpiece, and the universal module is set on the three-way positioning system to adapt to workpieces of different specifications; The three-way positioning system includes an angle plate, which is disposed above the base support component. The angle plate and the base support component are connected by an adjustment structure to achieve an angle adjustment of 15°-75°. The inclined plate is provided with a circular processing area with spoke support, which is used to place the inclined cover or valve body workpiece to be processed. The synchronous clamping mechanism includes three sets of radially distributed clamping units. Each set of clamping units includes a clamping nut and a tightening screw. The clamping nut and the tightening screw work together to form a triangular constraint clamping on the workpiece placed in the processing area. The synchronous clamping mechanism also includes a limiting block and a positioning mandrel. The limiting block and the positioning mandrel are disposed in the circular processing area and work together with the three sets of clamping units to form a triangular constraint fixing on the workpiece. The universal module includes a replaceable bushing and a vertical plate. The replaceable bushing is fitted onto the positioning mandrel, and the vertical plate is mounted on the basic support assembly. The vertical plate has a T-slot for quick adjustment and change of shape.

2. The universal tooling device for simultaneous machining of three sides of a slanted cover and valve body according to claim 1, characterized in that, The basic support components include a lathe flange and a fixture base plate. The lathe flange and the fixture base plate are fixedly connected to each other, forming the basic installation platform of the device.

3. The universal tooling device for simultaneous machining of three sides of the slanted cover and valve body according to claim 2, characterized in that, The adjustment structure includes an adjustment bolt and a positioning pin disposed between the base support component and the inclined plate. By adjusting the tightness of the adjustment bolt and cooperating with the positioning action of the positioning pin, the tilt angle of the inclined plate can be adjusted.

4. The universal tooling device for simultaneous machining of three sides of the slanted cover and valve body according to claim 3, characterized in that, The three sets of clamping units of the synchronous clamping mechanism are evenly distributed in the circumferential direction of the circular processing area. The clamping nut and the tightening screw of each set of clamping units are connected by a linkage structure to achieve synchronous pressure application.

5. A universal tooling device for simultaneous machining of three sides of a slanted cover and a valve body according to claim 4, characterized in that, The replaceable bushing is available in various sizes to accommodate different specifications of slanted cover or valve body workpieces. The replaceable bushing is detachably connected to the positioning mandrel. By replacing the replaceable bushing with different sizes, the processing requirements of workpieces of various specifications can be met.

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