A kind of strong pressure setting heat treatment tooling of thin-wall angular contact sleeve ring

Abstract

The application discloses a kind of strong pressure shaping heat treatment toolings of thin-wall angular contact ring, it is related to thin-wall angular contact ring forming technical field, including base sleeve and tray, and the tray is fixed with the base sleeve bottom by support column, and the base sleeve is fixed with limit sleeve inside, and the side wall of limit sleeve is provided with through slot, and it is annularly symmetrical distribution, and the through slot is provided with the separate abutting mechanism of ring inner expansion locking;The strong pressure shaping heat treatment tooling of thin-wall angular contact ring of the application, by ingenious modular structure, precise double-drive adjusting mechanism and the inner expansion unit with self-locking function, efficient, accurate, stable multidirectional strong pressure shaping of stacked thin-wall ring is realized, the size precision and pass rate of heat treatment product are not only significantly improved by the tooling, but also have wide versatility due to its high adjustability, while simple operation, high degree of automation, it is the ideal tooling for solving the problem of thin-wall piece heat treatment deformation.

Description

Technical Field

[0001] This invention relates to the field of thin-walled corner contact ring forming technology, specifically to a high-pressure shaping and heat treatment tooling for thin-walled corner contact rings. Background Technology

[0002] Thin-walled angular contact rings, as core components of precision bearings, are widely used in aerospace, high-speed machine tools, precision instruments and other fields. Due to their thin walls, large diameters and poor rigidity, these rings are prone to elliptical deformation and end face warping during heat treatment due to the combined effects of structural stress and thermal stress. This seriously affects the rotational accuracy, vibration noise level and service life of the bearing. How to effectively control the deformation of thin-walled rings during heat treatment has always been a key technical problem that needs to be solved in the bearing manufacturing field.

[0003] To address the aforementioned issues, various technical solutions for controlling the deformation of thin-walled rings during heat treatment have been proposed within the industry. For example, patent document CN104480287A describes a forming mold for heat treatment of thin-walled rings. This mold employs a structure with an inner conical expansion sleeve and an outer conical sleeve. By tightening the screw, the inner conical expansion sleeve is driven to move axially, thereby pushing the support block to expand radially and achieve support and locking of the inner wall of the ring. Another example is utility model patent CN207845713U, which discloses a mold for preventing the heat treatment of thin-walled rings. It employs a top tooth and top ring structure, and the inner hole support is achieved by matching the arc of the outer edge of the top tooth with the inner circle of the ring. Yet another example is patent document CN204976419U, which discloses a heat treatment shaping fixture for thin-walled ring-shaped workpieces. It employs a combination structure of a base sleeve and a clamping sleeve, and radial positioning is achieved by the small gap between the outer diameter of the middle cylinder and the inner diameter of the ring. Axial locking is achieved by the clamping sleeve being spun.

[0004] However, analysis of the aforementioned existing technologies reveals the following shortcomings:

[0005] First, most existing tooling uses a single inner hole support structure or end face clamping structure, which lacks a coordinated radial and axial constraint mechanism, making it difficult to form a three-dimensional strong pressure shaping state. For angular contact rings with extremely thin walls and a large diameter-to-thickness ratio, their deformation resistance is still insufficient.

[0006] Secondly, the support units of existing tooling are mostly integral or fixed structures, which cannot flexibly adjust the axial position according to the different thicknesses of stacked rings, making it difficult for the same tooling to adapt to multiple specifications of rings and resulting in poor versatility.

[0007] Third, some tooling uses manual adjustment, which is cumbersome to operate, difficult to guarantee adjustment accuracy, and the synchronization of multiple support units is poor, which can easily cause uneven force on the ring and aggravate local deformation.

[0008] Fourth, under high-temperature heat treatment conditions, the locking mechanism of some tooling lacks reliable self-locking performance, and the locking force is prone to loosening with temperature changes, affecting the stability of the centering effect;

[0009] To address this, we propose a high-pressure shaping and heat treatment fixture for thin-walled corner contact rings. Summary of the Invention

[0010] The purpose of this invention is to provide a high-pressure shaping and heat treatment fixture for thin-walled corner contact rings, thereby solving the problems mentioned in the background art;

[0011] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure shaping heat treatment fixture for thin-walled corner contact rings, comprising a base sleeve and a tray, wherein the tray is fixed to the bottom of the base sleeve by a support column, a limiting sleeve is fixed inside the base sleeve, the side wall of the limiting sleeve is provided with a through groove, which is symmetrically distributed in a ring, and a separating abutment mechanism for the ring to expand and lock is provided in the through groove, which is stacked in the through groove. The side walls of the separating abutment mechanisms stacked and axially distributed in the same through groove are equipped with folding rods, and they slide together through the folding rods.

[0012] A sliding rod, a lead screw, and a rotating column are installed on the bottom of the base sleeve and on the same side of the separating abutment mechanism, and the three of them pass through the separating abutment mechanism and are connected to the top of the limiting sleeve;

[0013] A cylinder is fixed to the base sleeve by a support column, and a clamping sleeve is installed on the output end of the cylinder. The clamping sleeve is correspondingly set with the limiting sleeve, and the inner diameter of the clamping sleeve is larger than that of the limiting sleeve.

[0014] Furthermore, a servo motor one and a servo motor two are installed at the bottom of the tray. An outer rotating sleeve is movably connected to the bottom of the base sleeve through a bearing, and an inner rotating sleeve is provided through the inner side of the outer rotating sleeve. The servo motor one meshes with the toothed pattern of the outer wall of the outer rotating sleeve through a gear, and the servo motor two meshes with the toothed pattern of the outer wall of the inner rotating sleeve through a gear.

[0015] Furthermore, an inner spiral toothed ring is movably connected inside the base sleeve and outside the lead screw, and the inner spiral toothed ring is connected to the inner spiral sleeve. An outer spiral toothed ring is movably connected inside the base sleeve and outside the spiral column, and the outer spiral toothed ring is connected to the outer spiral sleeve.

[0016] Furthermore, the separating abutment mechanism provided inside the base sleeve includes a slider that slides in a through groove, a toothed cylinder installed in the inner cavity of the slider, a threaded rod movably connected to the inner wall of the inner cavity of the slider, and a transmission tooth fixedly sleeved on the threaded rod. The transmission tooth meshes with the toothed cylinder. An abutment sleeve is slidably connected in the groove at the end of the slider. The abutment sleeve is threadedly connected to the threaded rod, and the rotation of the threaded rod drives the abutment sleeve to slide back and forth.

[0017] Furthermore, a lead screw installed inside the base sleeve passes through multiple sliders, and the topmost slider is threadedly connected to the lead screw. The rotation of the lead screw causes the topmost slider to slide within the through groove of the limiting sleeve, and under the linkage of the folding rod, it causes the remaining sliders to unfold.

[0018] Furthermore, the rotating column inside the base sleeve penetrates the slider and the toothed cylinder, and is slidably connected to the toothed cylinder. The rotation of the rotating column drives the toothed cylinder to rotate, which in turn drives the sliding of the abutting sleeve sleeved at the end of the threaded rod, thus completing the abutting support of the inner wall of the collar.

[0019] The operation method of the high-pressure shaping and heat treatment tooling for this thin-walled corner contact ring is as follows:

[0020] The installation process involves stacking the rings to be quenched on the outside of the limiting sleeve. Based on the externally output ring thickness, multiple sliders in the through groove of the limiting sleeve are unfolded accordingly. Servo motor 2 drives the inner rotating sleeve to rotate, which in turn drives the inner rotating toothed ring to rotate, completing the rotation of the screw on the four sets of sliders. The screw rotation completes the displacement control of the top slider in the through groove, and the remaining sliders are unfolded at equal intervals through the folding rod, so that the height of the outer side of the slider abutting the sleeve matches the height of the inner wall of the corresponding stacked rings.

[0021] Subsequently, the servo motor drives the outer rotating sleeve to rotate, which in turn drives the outer rotating toothed ring to rotate, completing the rotation of the rotating column on the four sets of sliders. As the rotating column rotates, it pushes the abutting sleeve to expand outward synchronously. The abutting sleeve then locks the inner wall of the collar against the sleeve. Finally, the cylinder pushes the pressing sleeve downward to contact and squeeze the collars stacked on the limiting sleeve, completing the end face pressing and locking of the collars. Then, the final quenching process is performed.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. This invention significantly improves the dimensional accuracy and product quality of thin-walled rings through the synergistic effect of "internal expansion and external pressure" and a self-locking mechanical structure. The tooling adopts a design combining a partitioned abutment mechanism and a clamping sleeve. In the radial direction, multiple abutment sleeves uniformly and symmetrically expand and lock the inner wall of the ring. In the axial direction, the cylinder-driven clamping sleeve applies uniform pressure to the end face of the ring, forming a three-dimensional strong pressure shaping state. This synergistic effect can effectively offset the structural stress generated by the internal phase transformation of the material during the heat treatment process, significantly suppressing the common elliptical deformation and warping problems of thin-walled parts. The threaded pair formed by the threaded rod and the abutment sleeve has self-locking characteristics, ensuring that a constant expansion force is maintained throughout the high-temperature heat treatment process. Even if the material undergoes thermal expansion or phase transformation volume change, the self-locking structure can effectively resist reverse impact and prevent the locking force from loosening, thereby ensuring that the ring is always in a stable constrained state throughout the entire heat treatment cycle, greatly improving the dimensional accuracy and yield of the product after heat treatment.

[0024] 2. This invention employs a dual-servo motor layered drive and a modular adjustable structure to achieve efficient automated adjustment and wide versatility. The tooling drives the outer and inner rotating sleeves respectively through servo motor one and servo motor two, and then synchronously controls the rotation of all rotating columns and lead screws through the outer and inner rotating gear rings, achieving decoupled control of axial adjustment and radial locking. This layered drive design not only simplifies the operation process, but more importantly, ensures the consistency of axial and radial adjustment of all support points, allowing multiple stacked rings to be precisely and evenly locked simultaneously, avoiding stress concentration or positioning failure caused by uneven local force. At the same time, multiple partitioned abutment mechanisms linked by folding rods within the same through slot can slide at equal distances, allowing the tooling to quickly adapt to ring specifications of different thicknesses without frequent tooling changes. Combined with the closed-loop control characteristics of the servo motors, the operator only needs to input the ring parameters to achieve fully automated adjustment, significantly shortening tooling adjustment time, significantly improving production efficiency, and possessing excellent operational convenience and equipment versatility. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the high-pressure shaping and heat treatment tooling for the thin-walled corner contact ring of the present invention;

[0026] Figure 2 This is a schematic front view of the high-pressure shaping and heat treatment tooling for the thin-walled corner contact ring of the present invention;

[0027] Figure 3 This is a schematic diagram of the servo motor driving the inner and outer rotating sleeves according to the present invention;

[0028] Figure 4 This is a schematic diagram of the installation structure of multiple separating abutment mechanisms on the limiting sleeve of the present invention;

[0029] Figure 5 This is a schematic diagram of the installation structure of the lead screw and multiple separating abutment mechanisms of the present invention;

[0030] Figure 6 This is a schematic diagram of the toothed cylinder structure installed inside the slider and on the rotating column of the present invention;

[0031] Figure 7 This is a schematic diagram of the meshing transmission structure between the gear cylinder and the transmission gear of the present invention.

[0032] Figure 8 This is a schematic diagram showing the meshing connection between the inner and outer gear rings of the present invention and the lead screw and the bottom gear of the rotating column.

[0033] In the diagram: 1. Base sleeve; 2. Tray; 3. Servo motor one; 4. Servo motor two; 5. Inner rotating sleeve; 6. Outer rotating sleeve; 7. Outer rotating gear ring; 8. Inner rotating gear ring; 9. Limiting sleeve; 10. Cylinder; 11. Pressing sleeve; 12. Separating abutment mechanism; 121. Slider; 122. Gear cylinder; 123. Threaded rod; 124. Transmission gear; 125. Abutment sleeve; 13. Slide rod; 14. Lead screw; 15. Rotating column; 16. Folding rod. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figure 1-8 The present invention provides a technical solution:

[0036] Example 1: This example aims to illustrate the overall structure and collaborative working mechanism of the high-pressure shaping heat treatment fixture for thin-walled corner contact rings. The fixture integrates the internal expansion radial locking and axial clamping functions in a modular way and introduces an adjustable partition structure. It aims to solve the problem that thin-walled rings are prone to elliptical or warping deformation due to stress release during heat treatment, while improving the versatility and operational efficiency of the fixture.

[0037] like Figure 1 , Figure 2 and Figure 4 As shown, this tooling includes a base sleeve 1 that serves as a support base and a tray 2 fixed to its bottom. A limiting sleeve 9 is coaxially fixed inside the base sleeve 1. Multiple through slots are evenly distributed along the circumference on the side wall of the limiting sleeve 9. These through slots provide installation and movement space for the subsequent inner wall locking mechanism of the collar.

[0038] In each through slot, multiple partition abutment mechanisms 12 are stacked axially to support the stacked rings from the inside. Adjacent partition abutment mechanisms 12 in the same through slot are connected by folding rods 16, enabling them to move in tandem and maintain equal spacing. This design cleverly achieves adaptability to rings of different thicknesses. When different sizes of rings need to be processed, the position of the top slider 121 is adjusted by the drive mechanism, and the folding rods 16 will drive the remaining sliders 121 to move synchronously and equidistantly. This ensures that the support height of each abutment sleeve 125 is precisely matched with the center height of the corresponding ring. This not only significantly enhances the versatility of the tooling and avoids the trouble of frequently changing tooling, but also ensures that all rings are subjected to uniform stress in the same heat treatment batch, laying the foundation for subsequent stable locking and fundamentally eliminating the hidden danger of local stress or insufficient support caused by height mismatch.

[0039] To achieve multi-directional constraint on the rings, a cylinder 10 is mounted on the top of the tooling via a support column. The output end of the cylinder is connected to a clamping sleeve 11. The clamping sleeve 11 is coaxially arranged with the limiting sleeve 9 and its inner diameter is slightly larger than that of the latter, allowing it to be fitted onto the stacked rings from top to bottom and applying uniform axial pressure to the end face of the rings. Combined with the radial expansion force of the separating abutment mechanism 12, the rings are radially centered and locked by multiple abutment sleeves 125 and axially compacted by the clamping sleeve 11, thus forming a three-dimensional high-pressure shaping state. This synergistic effect of "internal expansion and external pressure" can effectively offset the structural stress generated by the internal phase transformation of the material during heat treatment, significantly suppress the elliptical deformation and warping of thin-walled parts, and greatly improve the dimensional accuracy and yield of the product after heat treatment. At the same time, since both radial and axial clamping forces can be quantitatively controlled, operators can accurately set the clamping force value according to the ring material, wall thickness, and heat treatment process requirements, realizing digital management of process parameters and further improving the stability of heat treatment quality.

[0040] Example 2: In order to achieve precise and independent control of the above-mentioned separating and abutting mechanism 12, this example describes in detail the integrated dual servo motor drive system and its transmission path. The design of the system fully considers the convenience of operation and the precision of adjustment, avoiding the defects of traditional manual adjustment that is time-consuming, laborious and inaccurate, while ensuring the synchronization and consistency of the actions of multiple groups of sliders 121.

[0041] like Figure 3 and Figure 8 As shown, servo motor 1 3 and servo motor 2 4 are installed at the bottom of the tray 2. The bottom of the base sleeve 1 is rotatably connected to the inner rotating sleeve 5 and the outer rotating sleeve 6 through the bearing. The inner rotating sleeve 5 is coaxially inserted inside the outer rotating sleeve 6. The servo motor 1 3 drives the outer rotating sleeve 6 to rotate through the gear meshing with the toothed teeth on the outer wall of the outer rotating sleeve 6.

[0042] Servo motor 4 meshes with inner rotating sleeve 5 through gears, driving inner rotating sleeve 5 to rotate independently. Inner rotating sleeve 5 is fixedly connected to inner rotating toothed ring 8 set in base sleeve 1. Outer rotating sleeve 6 is fixedly connected to outer rotating toothed ring 7. Inner rotating toothed ring 8 meshes with gears at the bottom of all lead screws 14, and outer rotating toothed ring 7 meshes with gears at the bottom of all rotating columns 15.

[0043] This layered drive structure brings significant advantages: the servo motor 4 drives all lead screws 14 to rotate synchronously through the inner rotating sleeve 5 and the inner rotating toothed ring 8, thereby uniformly adjusting the axial height of all the separating contact mechanisms 12;

[0044] Servo motor 3 drives all rotating columns 15 to rotate synchronously through the outer rotating sleeve 6 and the outer rotating toothed ring 7, uniformly controlling the radial extension of all abutting sleeves 125. The two actions do not interfere with each other and can be performed sequentially, realizing the decoupled control of axial adjustment and radial locking. This not only simplifies the operation process, but more importantly, ensures the consistency of adjustment of all support points in the axial and radial directions. This allows multiple rings to be precisely and evenly locked simultaneously in a stacked state, avoiding stress concentration or positioning failure caused by local overtightness or looseness, thereby improving the stability and reliability of the heat treatment process. In addition, the closed-loop control characteristics of the servo motor allow the operator to input ring specification parameters through the human-machine interface. The system automatically calculates and drives the motor to the target position, realizing fully automated adjustment, greatly shortening the tooling adjustment time and improving production efficiency.

[0045] Example 3: This example provides an in-depth analysis of the core unit for achieving precise support of the inner wall of the ring, the fine structure of the separating abutment mechanism 12 and its internal expansion locking principle. The ingenuity of this mechanism lies in integrating axial follow-up and radial drive functions into one, and achieving reliable self-locking through mechanical transmission, ensuring that the locking force does not decrease during high-temperature heat treatment, thereby ensuring that the ring remains in a stable constraint state throughout the entire heat treatment cycle.

[0046] Combination Figure 5 , Figure 6 and Figure 7 Each separating abutment mechanism 12 includes a slider 121 that can slide within the through groove of the limiting sleeve 9. The slider 121 has a cavity inside, and a freely rotatable gear cylinder 122 is installed in the cavity. A threaded rod 123 is horizontally movably connected to the side wall of the inner cavity of the slider 121. A transmission tooth 124 is fixedly sleeved on the threaded rod 123. The transmission tooth 124 is engaged with the gear cylinder 122. A guide groove is opened at the end of the slider 121 facing the collar. An abutment sleeve 125 is slidably connected in the groove. The abutment sleeve 125 is threadedly engaged with the protruding end of the threaded rod 123.

[0047] Its operating logic is as follows: When the axial height needs to be adjusted, the lead screw 14 rotates. Since the top slider 121 is threadedly connected to the lead screw 14, it is driven to slide along the through groove. Through the linkage of the folding rod 16, it drives all the sliders 121 below to move synchronously, thereby realizing the overall axial adjustment. During this process, the rotating column 15 and the slide rod 13 set on one side only play a guiding role and do not participate in the driving. This design ensures that the axial adjustment is convenient and accurate and will not be interfered with by the radial drive mechanism.

[0048] When radial locking is required, the swivel column 15 rotates. Since the swivel column 15 and the gear cylinder 122 are slidably connected by a spline, the rotation of the swivel column 15 will force all the gear cylinders 122 to rotate synchronously. The rotation of the gear cylinder 122 is transmitted to the threaded rod 123 through the meshing transmission teeth 124, causing the threaded rod 123 to rotate. The rotation of the threaded rod 123 then drives the abutment sleeve 125, which is threadedly connected to it, to extend radially outward smoothly along the guide groove until its end face is tightly pressed against the inner wall of the collar.

[0049] This transmission method has two major advantages: First, the threaded pair formed by the threaded rod 123 and the abutting sleeve 125 has a self-locking characteristic. Once the drive stops, the abutting sleeve 125 cannot retract under the action of radial force, thus maintaining a constant tension force throughout the heat treatment process and ensuring the reliability of centering. Even if the material undergoes slight thermal expansion or phase change volume change at high temperatures, the self-locking structure can effectively resist reverse impact and prevent the locking force from loosening. Second, since all abutting sleeves 125 are driven by the same rotating column 15, their extensions are completely consistent at the same time, resulting in a uniform and symmetrical radial support force on the inner wall of the ring. This is crucial for maintaining the roundness of the thin-walled ring and effectively prevents local deformation caused by uneven local force. At the same time, the abutting sleeve 125 and the inner wall of the ring are in surface contact rather than point contact, which increases the contact area, reduces contact stress, avoids leaving indentations on the inner wall of the ring, and protects the surface quality of the product.

[0050] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0051] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-pressure shaping and heat treatment fixture for thin-walled corner contact rings, comprising a base sleeve (1) and a tray (2), wherein the bottom of the base sleeve (1) is fixed to the tray (2) by a support column, characterized in that, The base sleeve (1) is fixed with a limiting sleeve (9). The side wall of the limiting sleeve (9) is provided with a through groove, which is symmetrically distributed in a ring. The through groove is provided with a separating abutment mechanism (12) that is locked by the inner expansion of the collar. The two separating abutment mechanisms (12) are stacked in the through groove. The side wall of the stacked and axially distributed separating abutment mechanisms (12) in the same through groove is equipped with a folding rod (16), and they slide together through the folding rod (16). The base sleeve (1) is equipped with a slide rod (13), a lead screw (14) and a rotating column (15) on the bottom of the base sleeve (1) and on the same side of the separation and abutment mechanism (12), and the three of them pass through the separation and abutment mechanism (12) and are connected to the top of the limiting sleeve (9); A cylinder (10) is fixed on the base sleeve (1) by a support column. A pressing sleeve (11) is installed on the output end of the cylinder (10). The pressing sleeve (11) is correspondingly set with the limiting sleeve (9), and the inner diameter of the pressing sleeve (11) is larger than that of the limiting sleeve (9).

2. The high-pressure shaping and heat treatment fixture for a thin-walled corner contact ring according to claim 1, characterized in that, Servo motor one (3) and servo motor two (4) are installed at the bottom of the tray (2). The bottom of the base sleeve (1) is movably connected to an outer rotating sleeve (6) through a bearing. An inner rotating sleeve (5) is provided through the inner side of the outer rotating sleeve (6). Servo motor one (3) meshes with the outer wall teeth of the outer rotating sleeve (6) through a gear. Servo motor two (4) meshes with the outer wall teeth of the inner rotating sleeve (5) through a gear.

3. The high-pressure shaping and heat treatment fixture for a thin-walled corner contact ring according to claim 2, characterized in that, An inner spiral toothed ring (8) is movably connected inside the base sleeve (1) and outside the lead screw (14). The inner spiral toothed ring (8) is connected to the inner spiral sleeve (5). An outer spiral toothed ring (7) is movably connected inside the base sleeve (1) and outside the spiral column (15). The outer spiral toothed ring (7) is connected to the outer spiral sleeve (6).

4. The high-pressure shaping and heat treatment fixture for a thin-walled corner contact ring according to claim 3, characterized in that, The separation and abutment mechanism (12) provided in the base sleeve (1) includes a slider (121) that slides in the through groove. A toothed cylinder (122) is installed in the inner cavity of the slider (121). A threaded rod (123) is movably connected to the inner wall of the inner cavity of the slider (121), and a transmission tooth (124) is sleeved and fixed on the threaded rod (123). The transmission tooth (124) meshes with the toothed cylinder (122). An abutment sleeve (125) is slidably connected in the end groove of the slider (121). The abutment sleeve (125) is threadedly connected to the threaded rod (123). The abutment sleeve (125) slides back and forth by rotating the threaded rod (123).

5. The high-pressure shaping and heat treatment fixture for a thin-walled corner contact ring according to claim 4, characterized in that, The lead screw (14) installed inside the base sleeve (1) passes through multiple sliders (121). The topmost slider (121) is threadedly connected to the lead screw (14). The rotation of the lead screw (14) drives the topmost slider (121) to slide in the through groove of the limiting sleeve (9), and under the linkage of the folding rod (16), it drives the remaining sliders (121) to unfold.

6. The high-pressure shaping and heat treatment fixture for a thin-walled corner contact ring according to claim 5, characterized in that, The rotating column (15) provided inside the base sleeve (1) passes through the slider (121) and the toothed cylinder (122), and is slidably connected to the toothed cylinder (122). The rotating column (15) rotates to drive the toothed cylinder (122) to rotate, which drives the abutting sleeve (125) sleeved at the end of the threaded rod (123) to slide, thus completing the abutting support of the inner wall of the collar.

7. The high-pressure shaping and heat treatment fixture for a thin-walled corner contact ring according to claim 6, characterized in that, The operation method of the high-pressure shaping and heat treatment tooling for this thin-walled corner contact ring is as follows: The expected installation involves stacking the rings to be quenched on the outside of the limiting sleeve (9). According to the ring thickness size output externally, the multiple sliders (121) in the through groove of the limiting sleeve (9) are unfolded accordingly. The servo motor (4) drives the inner rotating sleeve (5) to rotate. The inner rotating sleeve (5) drives the inner rotating toothed ring (8) to rotate, completing the rotation of the screw (14) on the four sets of sliders (121). The rotation of the screw (14) completes the displacement control of the top slider (121) in the through groove, and drives the remaining sliders (121) to unfold at equal intervals through the folding rod (16), so that the outer side of the slider (121) abuts the sleeve (125) and matches the height of the inner wall of the corresponding stacked rings. Subsequently, servo motor 1 (3) drives the outer rotating sleeve (6) to rotate, and the outer rotating sleeve (6) drives the outer rotating toothed ring (7) to rotate, completing the rotation of the rotating column (15) on the four sets of sliders (121). While the rotating column (15) rotates, it pushes the abutting sleeve (125) to expand outward synchronously. The abutting sleeve (125) performs abutting and locking of the inner wall of the ring. Finally, the cylinder (10) pushes the pressing sleeve (11) to move downward, contacting and squeezing the rings stacked on the limiting sleeve (9), completing the pressing and locking of the ring end face, and then performing the final quenching treatment.

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