Positioning and clamping device for heat treatment of aerospace high-strength structural member

Abstract

The invention discloses a positioning and clamping device for heat treatment of an aerospace high-strength structural part, relates to the field of aerospace component heat treatment tools, and solves the problems that an existing device is poor in adaptability and insufficient in clamping and fitting degree. The device comprises a positioning base table, side jacking limiting pieces and a clamping driving piece, the positioning base table is a basic support, and the side jacking limiting pieces are distributed in a bilateral symmetry mode and can be freely combined up and down to adapt to workpieces with different heights. The side jacking limiting piece comprises a sliding base, a jacking rod, a jacking head and an elastic jacking piece, the jacking head achieves angle self-adaption through a universal ball joint and is attached to the side face of a workpiece, and the elastic jacking piece provides continuous jacking force. The clamping driving piece drives the sliding seats on the two sides to move synchronously through the double-end lead screw, and stable movement and accurate positioning are guaranteed in cooperation with the guide assembly. The device is flexible in clamping and high in universality, deformation of workpieces during heat treatment can be avoided, and the clamping efficiency and the machining precision are improved.

Description

A heat treatment positioning and clamping device for high-strength structural components in aerospace Technical Field

[0001] This invention relates to the field of aerospace component processing technology, specifically to a heat treatment positioning and clamping device for high-strength aerospace structural components. Background Technology

[0002] Structural components in the aerospace field, such as fuselage frames, wing spars, and connectors, are typically made of high-strength alloy materials and require heat treatment to improve their mechanical properties. During heat treatment, the workpiece is prone to deformation due to heat; therefore, specialized positioning and clamping devices are needed to fix the workpiece in place to ensure its dimensional accuracy and geometric tolerances.

[0003] Existing positioning and clamping devices mostly employ fixed or simply adjustable clamping structures, making it difficult to adapt to workpieces of different sizes and shapes. Furthermore, uneven clamping force distribution can easily lead to localized workpiece deformation or loosening of the clamp during heat treatment due to thermal stress. In addition, for workpieces with significant height, traditional devices often fail to provide sufficient lateral support, affecting positioning stability. Therefore, a positioning and clamping device that is flexibly adjustable, provides uniform clamping, and offers high stability is needed.

[0004] Therefore, this solution proposes a heat treatment positioning and clamping device for high-strength aerospace structural components to solve the above problems. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the purpose of this invention is to provide a heat treatment positioning and clamping device for high-strength structural components in aerospace applications.

[0006] To achieve the aforementioned objective, the technical solution of this invention is as follows: A high-strength structural component heat treatment positioning and clamping device for aerospace mainly comprises three core parts: a positioning base, a side clamping limiter, and a clamping drive. These parts cooperate to form a complete and flexibly adjustable positioning and clamping system. The specific structural configuration is as follows: The positioning base serves as the bottom foundation structure of the entire device, providing installation support and positioning reference for all components. The positioning base adopts an integrated rigid structure to ensure overall structural strength and stability. It can be directly fixed to the workbench inside the heat treatment furnace or on an external heat treatment operating table, providing a stable foundation for subsequent workpiece clamping and heat treatment operations; the side clamping limiter... The device consists of at least two side clamping limiters symmetrically distributed on the positioning base. These are the core components for achieving lateral clamping and positioning of the workpiece. The side clamping limiters on each side can be freely combined sequentially from bottom to top. The number of combinations can be flexibly adjusted according to the height of the workpiece to be heat-treated, achieving full-height, multi-point lateral support for workpieces of different heights and effectively solving the bending and offset problems during heat treatment of tall workpieces. The clamping drive component is installed inside the horizontally distributed mounting slots within the positioning base. As the power drive component of the device, it provides the power for the side clamping limiters on both sides to move in opposite directions or backwards, realizing the clamping and releasing operations of the workpiece. It also ensures the synchronous movement of the side clamping limiters on both sides, improving the centering and clamping accuracy.

[0007] The side clamping and limiting component, as a key part for achieving uniform clamping and adapting to the workpiece shape, specifically comprises four parts: a slide, a push rod, a clamping head, and an elastic clamping component. The connection and arrangement of each component are as follows: The slide, which is longitudinally distributed, serves as the basic mounting structure for the side clamping and limiting component, supporting the push rod, clamping head, and elastic clamping component. The slide is a rigid structure to ensure the overall support strength of the side clamping and limiting component. The push rod has several equidistant sliding members that slide through the interior of the slide. The push rod and the slide are in a sliding fit, allowing free extension and retraction along their own axis. Each push rod is an independent support unit. The push rods are longitudinally and equidistantly distributed on the slide, providing multi-point lateral support for the workpiece. The clamping heads, located at the inner end of each push rod, directly contact the side of the workpiece to be heat-treated and are the key components for achieving close clamping of the workpiece. They can adaptively adjust according to the shape and angle of the workpiece side to ensure a tight fit. The elastic clamping element is assembled between the end of the push rod away from the clamping head and the outer end face of the slide, providing a continuous elastic clamping force to the push rod, ensuring that the clamping head always fits tightly against the side of the workpiece. At the same time, it can absorb the slight thermal expansion and contraction of the workpiece during the heat treatment process, avoiding workpiece deformation caused by rigid constraints.

[0008] Furthermore, the clamping head includes a universal joint fixedly connected to one end of the inner side of the push rod, and a clamping pad mating to the movable end of the universal joint. The inner end face of the clamping pad presses against the side of the workpiece to be heat-treated. The universal joint can achieve 360° angle fine adjustment, allowing the clamping pad to adaptively adjust according to the tilt angle and slight undulations of the workpiece side, changing traditional line contact and point contact to surface contact, effectively improving the clamping fit and avoiding local stress concentration. As a component that directly contacts the workpiece, the structure and material of the clamping pad directly affect the clamping effect and the surface quality of the workpiece.

[0009] Furthermore, the elastic clamping component includes an end cap fixed to one end of the push rod, a positioning ring fixed to the outer end face of the slide block at the push rod's exit port, and a spring fixed between the end cap and the positioning ring. The spring is also sleeved on the outside of the push rod. The end cap is used to axially limit the spring, the positioning ring provides a fixed support reference for the spring, and the spring provides a continuous elastic driving force to the push rod, so that the push rod always has a tendency to clamp inward. Each push rod is equipped with an independent elastic clamping component, which can realize independent elastic clamping of each push rod, ensuring multi-point uniform clamping of the workpiece.

[0010] Furthermore, the front and rear ends of the top of the slide block are equipped with vertically distributed locking teeth, and the front and rear ends of the bottom of the slide block are equipped with locking interfaces that adapt to the locking teeth. The upper and lower adjacent side clamping and limiting components are engaged by the locking teeth and locking interfaces, and the locking teeth and locking interfaces are also positioned by bolts. The engagement of the locking teeth and locking interfaces enables the rapid positioning and initial fixation of the upper and lower side clamping and limiting components, while the bolts provide secondary tightening, ensuring that the combined side clamping and limiting components form a whole with sufficient structural strength. At the same time, the engagement of the locking teeth and locking interfaces makes the disassembly and assembly of the side clamping and limiting components simple and quick, and the number of combinations can be quickly adjusted according to the workpiece height.

[0011] Furthermore, the clamping drive component includes a double-ended lead screw rotatably mounted inside the mounting slot, lead screw sleeves threaded onto both ends of the double-ended lead screw, and screw caps distributed outside the positioning base and connected to the right end of the double-ended lead screw. The top walls of the lead screw sleeves on both sides are connected to the bottom center of the slide block inside the lowest side clamping limiters on both sides. The two ends of the double-ended lead screw are provided with precision threads with opposite directions of rotation. When the screw caps are rotated to drive the double-ended lead screw to rotate, the lead screw sleeves at both ends will move synchronously towards or away from the double-ended lead screw, thereby driving the side clamping limiters on both sides to move synchronously, realizing the centering and clamping of the workpiece, ensuring the positioning accuracy during the clamping process. The screw caps are located outside the positioning base, which is convenient for manual operation by the operator, eliminating the need for additional power equipment and simplifying the device structure.

[0012] Furthermore, guide rails distributed along the length of the positioning base are provided at both the front and rear edges. Guide components are installed inside each guide rail, and these components are connected to the bottom ends of the slide blocks within the lowest side-clamping limiting members on both sides. The guide rails provide the track for the installation and movement of the guide components, while the guide components constrain and guide the movement direction of the side-clamping limiting members, preventing them from shifting or tipping over during movement and ensuring smooth and straight movement.

[0013] Furthermore, the guiding assembly includes a guide rod installed within the guide rail, and guide sleeves slidably fitted onto both ends of the guide rod. The top walls of the guide sleeves on both sides are respectively connected to the bottom ends of the two slides. The guide rod provides a reference for the movement of the guide sleeves. The guide sleeves and guide rods are in a sliding fit. When the side clamping limiters move under the drive of the clamping drive, the guide sleeves slide synchronously along the guide rod, effectively constraining the movement trajectory of the slides, ensuring the parallel movement of the side clamping limiters on both sides, and improving the centering and clamping accuracy.

[0014] Furthermore, the clamping pad in the clamping head is made of a hard, wear-resistant material, and the inner end face of the clamping pad that contacts the workpiece to be heat-treated is a smooth contact surface. The hard, wear-resistant material ensures the structural stability and wear resistance of the clamping pad under high-temperature heat treatment conditions, preventing deformation or wear from affecting the clamping effect. The smooth contact surface prevents the clamping pad from scratching the workpiece surface during clamping, ensuring the surface quality of the workpiece.

[0015] Furthermore, the springs in the elastic clamping component are coaxially distributed along the axis of the push rod, and the locating ring and the outer end face of the slide are integrally fixed. The coaxial distribution of the springs and the push rod ensures that the spring force acts along the axis of the push rod, making the extension and retraction of the push rod smoother and avoiding uneven loading. The integral structure of the locating ring and the slide enhances the installation stability of the elastic clamping component, preventing the locating ring from loosening or shifting under the repeated spring force, and ensuring the long-term reliable operation of the elastic clamping component.

[0016] The beneficial effects of this invention are reflected in the fact that by setting up side clamping limiters that can be combined up and down, the number of clamping units can be flexibly adjusted according to the height of the workpiece, so as to adapt to workpieces of different sizes.

[0017] Each side clamping limiter is equipped with multiple independent elastic clamping rods, which, together with the clamping head of the universal ball joint structure, allow each clamping pad to adapt to the slight undulations on the side of the workpiece, achieving uniform multi-point contact, avoiding local stress concentration, and reducing heat treatment deformation.

[0018] The clamping drive uses a double-ended lead screw to synchronously drive the two side slides to center and clamp, and with the guide assembly, it ensures a smooth clamping process and high centering accuracy.

[0019] The locking teeth between the slides are engaged with the locking interface and bolts for positioning. The structure is simple, the assembly is firm, and it is easy to disassemble and assemble. Attached Figure Description

[0020] In the accompanying drawings: Figure 1 is a structural schematic diagram of the present invention; Figure 2 is a schematic diagram of the distribution of the mounting groove and guide rail of the present invention; Figure 3 is a structural schematic diagram of the side clamping limiting member of the present invention; Figure 4 is a structural schematic diagram of the slide of the present invention; Figure 5 is a structural schematic diagram of the clamping head of the present invention; Figure 6 is a structural schematic diagram of the elastic clamping member of the present invention; Figure 7 is a structural schematic diagram of the clamping drive member of the present invention; Figure 8 is a structural schematic diagram of the guide assembly of the present invention; Explanation of reference numerals: 1, positioning base; 11, mounting groove; 12, guide rail; 2, side clamping limiting member; 21, slide; 211, snap-fit ​​interface; 212, snap-fit ​​tooth; 22, push rod; 23, clamping head; 231, universal ball joint; 232, clamping pad; 24, elastic clamping member; 241, end cap; 242, spring; 243, positioning ring; 3, clamping drive member; 31, double-ended lead screw; 32, lead screw sleeve; 33, screw cap; 4, guide assembly; 41, guide rod; 42, guide sleeve. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the invention, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that if the embodiments of the invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

[0024] Please refer to Figures 1-8 in the specification. This invention provides a positioning and clamping device for heat treatment of high-strength structural components in aerospace applications, mainly comprising a positioning base 1, a side clamping and limiting member 2, and a clamping drive member 3. The positioning base 1 serves as the bottom foundation of the entire device and is typically fixed inside a heat treatment furnace or on a workbench. A transversely distributed mounting groove 11 is provided in the middle of the positioning base 1 for mounting the clamping drive member 3. Guide rails 12, distributed along the length direction, are provided at the front and rear edges of the positioning base 1 to guide the movement of the side clamping and limiting member 2.

[0025] At least two side-clamping limiting members 2 are provided, symmetrically distributed left and right. The side-clamping limiting members 2 on each side can be freely combined from bottom to top, that is, multiple side-clamping limiting members 2 can be stacked according to the height of the workpiece. Each side-clamping limiting member 2 includes a slide 21, a push rod 22, a clamping head 23, and an elastic clamping member 24. The slide 21 is longitudinally distributed, and multiple through holes are equally spaced along the longitudinal direction inside it. The push rod 22 slides through these through holes. The clamping head 23 is installed on the inner end (the side facing the workpiece) of the push rod 22, and the outer end is connected to the outer end face of the slide 21 through the elastic clamping member 24.

[0026] The clamping head 23 includes a universal ball joint 231 and a clamping pad 232. The fixed end of the universal ball joint 231 is fixedly connected to the inner end of the push rod 22, while the movable end is connected to the clamping pad 232. The inner end face of the clamping pad 232 is used to directly clamp the side of the workpiece. Due to the presence of the universal ball joint 231, the clamping pad 232 can swing relative to the push rod 22 within a certain angle range, thereby adapting to the tilt or unevenness of the workpiece side, achieving surface contact rather than line contact, improving clamping stability and avoiding damage to the workpiece.

[0027] Among them, the clamping pad in the clamping head 23 is a hard and wear-resistant structure, and the inner end face of the clamping pad 232 that contacts the workpiece to be heat-treated is a smooth contact surface.

[0028] The specific structure of the elastic clamping component 24 includes an end cap 241, a spring 242, and a positioning ring 243. The end cap 241 is fixed to the outer end of the push rod 22, the positioning ring 243 is fixed to the outer end face of the slide block 21 and located at the port through which the push rod 22 passes, and the spring 242 is sleeved on the outside of the push rod 22 and compressed between the end cap 241 and the positioning ring 243. In this way, the push rod 22 always has a tendency to press inward under the action of the spring 242, so that the clamping pad 232 elastically presses against the side of the workpiece, which can absorb the slight thermal expansion or deformation of the workpiece during heat treatment and maintain continuous clamping.

[0029] Among them, the spring 242 in the elastic clamping member 24 is coaxially distributed along the axial direction of the push rod 22, and the positioning ring 243 and the outer end face of the slide 21 are an integral fixed structure.

[0030] To enable the vertical assembly of multiple side-clamping limiting components 2, the top front and rear ends of the slide 21 are provided with upwardly distributed locking teeth 212, and the bottom front and rear ends of the slide 21 are provided with locking interfaces 211 that adapt to the locking teeth 212. Two adjacent side-clamping limiting components 2 achieve rapid positioning by engaging the locking interface 211 at the bottom of the upper slide 21 with the locking teeth 212 at the top of the lower slide 21. The two are then further secured with bolts to ensure the overall rigidity of the assembly.

[0031] The clamping drive 3 is used to drive the side clamping limiters 2 on both sides to move towards or away from each other, thereby achieving clamping and loosening. The clamping drive 3 includes a double-ended lead screw 31, lead screw sleeves 32, and a screw cap 33. The double-ended lead screw 31 is rotatably installed in the mounting groove 11, and its two ends have external threads with opposite directions of rotation. The two lead screw sleeves 32 are respectively threaded onto the two ends of the double-ended lead screw 31, and the top wall of the lead screw sleeve 32 is fixedly connected to the bottom center of the bottom of the lowermost slide block 21 on both sides. The screw cap 33 is located outside the positioning base 1 and is connected to the right end of the double-ended lead screw 31. When the screw cap 33 is rotated, the double-ended lead screw 31 rotates, driving the two lead screw sleeves 32 to move simultaneously towards the middle or both sides, thereby causing the side clamping limiters 2 on both sides to clamp or loosen.

[0032] To ensure smooth movement, guide components 4 are installed inside the guide rails 12 on both the front and rear sides of the positioning base 1. The guide components 4 include guide rods 41 and guide sleeves 42. The guide rods 41 are fixedly installed inside the guide rails 12 along their length. Two guide sleeves 42 are slidably fitted onto the guide rods 41, and the top walls of the guide sleeves 42 are fixedly connected to the bottom ends of the lowest sliding blocks 21 on both sides. Thus, when the sliding blocks 21 move, the guide sleeves 42 slide along the guide rods 41, providing guidance and support, and preventing the sliding blocks 21 from shifting or overturning.

[0033] The working process of this device is as follows: Side clamping limit component assembly: According to the actual height of the high-strength aerospace structural component to be heat-treated, select an appropriate number of side clamping limit components 2, arrange the side clamping limit components 2 to be assembled in an up-down order, align the locking interface 211 at the bottom of the upper slide 21 with the locking tooth 212 at the top of the lower slide 21, and apply downward force to make the locking tooth 212 fully engage with the locking interface 211, thereby achieving rapid positioning of the upper and lower side clamping limit components 2. Then, insert bolts into the bolt holes corresponding to the locking tooth 212 and the locking interface 211, and tighten the bolts with a wrench to complete the firm fixation of the upper and lower side clamping limit components 2. Finally, a clamping unit adapted to the height of the workpiece is formed on the left and right sides of the positioning base 1.

[0034] Workpiece placement: The high-strength aerospace structural component to be heat-treated is placed stably in the middle of the positioning base 1. The center axis of the positioning base 1 is used as a reference to ensure the centering of the workpiece. The left and right sides of the workpiece are respectively aligned with the clamping units on the left and right sides of the positioning base 1, which prepares for the subsequent clamping operation.

[0035] Centering and clamping: The operator holds the screw cap 33 on the outside of the positioning base 1 and rotates the screw cap 33 clockwise. The screw cap 33 drives the double-ended lead screw 31 to rotate clockwise around its own axis. Since the threads at both ends of the double-ended lead screw 31 turn in opposite directions, the lead screw sleeves 32 at both ends will move synchronously towards the center along the double-ended lead screw 31. The lead screw sleeves 32 drive the clamping units on both sides to move synchronously towards the center until the top clamping pads 232 on the clamping units contact the two sides of the workpiece. Continue to slowly adjust the screw cap 33 clockwise so that the top rods 22 on both sides overcome the preload force of the spring 242 and contract appropriately outward. The spring 242 is further compressed until all the top clamping pads 232 are in close contact with the sides of the workpiece and a certain preload force is applied to the workpiece. At this time, stop rotating the screw cap 33 to complete the centering and clamping operation of the workpiece. During the clamping process, since each push rod 22 is equipped with an independent elastic clamping element 24, and the clamping head 23 achieves angle self-adaptation through the universal ball joint 231, each clamping pad 232 can independently adjust its angle and extension amount according to the actual shape and slight undulations of the workpiece side, so as to achieve surface contact and fit with the workpiece side, ensure the uniform distribution of clamping force on the workpiece side, and avoid local stress concentration.

[0036] Heat treatment operation: After the workpiece is positioned and clamped, the entire device and the workpiece are sent into the heat treatment furnace for quenching, tempering, annealing and other corresponding heat treatment processes.

[0037] During heat treatment, the workpiece will expand or contract due to temperature changes. When the workpiece expands, the side of the workpiece will exert an outward pushing force on the clamping pad 232. The push rod 22 overcomes the elastic force of the spring 242 and contracts outward to absorb the expansion of the workpiece, avoiding excessive internal stress and deformation caused by rigid constraints. When the workpiece contracts, the elastic force of the spring 242 pushes the push rod 22 to extend inward, ensuring that the clamping pad 232 always maintains close contact with the side of the workpiece, preventing displacement of the workpiece due to loose clamping. At the same time, the self-locking property of the guide assembly 4 and the clamping drive 3 ensures that the position of the clamping units on both sides remains stable and will not loosen due to vibration or temperature changes during heat treatment, effectively ensuring stable clamping of the workpiece throughout the entire heat treatment process.

[0038] Workpiece disassembly: After the heat treatment process of the workpiece is completed, the device and the workpiece are taken out of the heat treatment furnace together. After the workpiece cools to room temperature, the operator holds the nut 33 and rotates it counterclockwise. The nut 33 drives the double-ended lead screw 31 to rotate counterclockwise. The lead screw sleeves 32 at both ends move synchronously to the opposite sides along the double-ended lead screw 31, which drives the clamping units on both sides to move synchronously to the sides. The clamping pad 232 gradually separates from the side of the workpiece until the clamping unit is completely separated from the workpiece. At this time, the heat-treated workpiece can be smoothly taken out from the positioning base 1, completing the entire heat treatment positioning and clamping operation.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat treatment positioning and clamping device for high-strength structural components in aerospace applications, characterized in that, include: The positioning base serves as the bottom foundation structure of the entire device; The side clamping limiters are provided in at least two and symmetrically distributed on the left and right sides, and the side clamping limiters on each side can be freely combined in sequence from bottom to top; the clamping drive is installed as a whole inside the horizontally distributed mounting grooves provided in the positioning base; wherein, the side clamping limiters include: a slide block, which is distributed longitudinally as a whole; a push rod, which has several equidistant sliding through the interior of the slide block; a clamping head, which is distributed at the inner end of each push rod; and an elastic clamping member, which is assembled between the push rod away from the clamping head and the outer end face of the slide block.

2. The heat treatment positioning and clamping device for high-strength structural components in aerospace as described in claim 1, characterized in that, The clamping head includes a universal joint fixedly connected to one end of the inner side of the push rod, and a clamping pad mating to the movable end of the universal joint. The inner end face of the clamping pad is clamped to the side of the workpiece to be heat treated.

3. The heat treatment positioning and clamping device for high-strength structural components in aerospace as described in claim 1, characterized in that, The elastic clamping component includes an end cap fixed to one end of the outer side of the push rod, a positioning ring fixed to the outer end face of the slide block at the position where the push rod passes through, and a spring fixed between the end cap and the positioning ring. The spring is also sleeved on the outside of the push rod.

4. The heat treatment positioning and clamping device for high-strength structural components in aerospace as described in claim 1, characterized in that, The front and rear ends of the top of the slide block are provided with vertically distributed locking teeth, and the front and rear ends of the bottom of the slide block are provided with locking interfaces that are adapted to the locking teeth. The upper and lower adjacent side clamping and limiting members are engaged by locking teeth and locking interfaces, and the locking teeth and locking interfaces are also positioned by bolts.

5. The heat treatment positioning and clamping device for high-strength structural components in aerospace as described in claim 1, characterized in that, The clamping drive includes a double-ended lead screw rotatably installed inside the mounting groove, lead screw sleeves threaded to both ends of the double-ended lead screw, and a rotating cap distributed outside the positioning base and connected to the right end of the double-ended lead screw. The top walls of the lead screw sleeves on both sides are respectively connected to the bottom center of the slide block inside the side clamping limiter on both sides.

6. The heat treatment positioning and clamping device for high-strength structural components in aerospace as described in claim 1, characterized in that, The positioning base is provided with guide rails distributed along its length at both the front and rear edges. Guide components are installed inside the guide rails, and the guide components are connected to the bottom end of the slide block in the side clamping limit member at the bottom of both sides.

7. A heat treatment positioning and clamping device for high-strength structural components in aerospace as described in claim 6, characterized in that, The guide assembly includes a guide rod installed in the guide rail and guide sleeves slidably sleeved at both ends of the guide rod. The top walls of the guide sleeves on both sides are respectively connected to the bottom ends of the two slide blocks.

8. The heat treatment positioning and clamping device for high-strength structural components in aerospace as described in claim 1, characterized in that, The clamping pad in the clamping head is a hard and wear-resistant structure, and the inner end face of the clamping pad that contacts the workpiece to be heat-treated is a smooth contact surface.

9. A heat treatment positioning and clamping device for high-strength structural components in aerospace as described in claim 3, characterized in that, The springs in the elastic clamping member are coaxially distributed along the axis of the push rod, and the positioning ring and the outer end face of the slide are an integral fixed structure.

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