Thin-walled part press riveting tool

Abstract

The utility model relates to transmission assembly technical field, specifically disclose a thin -walled piece riveting tool for cooperating servo press riveting operation of thin -walled piece is completed, including the riveting base, bottom limit tool, top limit tool and riveting pressure head that set up in proper order from below to above, the output of riveting base and bottom thin -walled piece contact, bottom limit tool is used to carry out the circumferential limit to the bottom of the need riveting work piece, top limit tool is used to carry out the circumferential limit to the top of the need riveting work piece, the output of riveting pressure head and top thin -walled piece contact. Adopt the technical scheme provided by the utility model can solve the riveting depth of prior art manual riveting thin -walled piece, pressure control inconsistency, lead to riveting quality consistency poor, influence the technical problem of the effect of lock washers.

Description

Technical Field

[0001] This utility model relates to the field of gearbox assembly technology, specifically to a riveting fixture for thin-walled parts. Background Technology

[0002] During gearbox assembly, thin-walled components such as lock nuts are often used for positioning and fixing to achieve axial positioning of shaft components. To ensure that these components do not loosen during operation, effective anti-loosening measures must be taken for these thin-walled components. Currently, the commonly used anti-loosening method is to use riveting technology to rivet lock nuts or other thin-walled components into grooves in the shaft wall, thereby restricting the relative rotation between threaded pairs and achieving mechanical anti-loosening function.

[0003] In existing technologies, riveting operations are mostly performed manually. This method typically relies on the operator's experience and physical strength to rivet thin-walled parts one by one into the shaft wall groove. However, this manual riveting method has many shortcomings. First, due to the significant influence of human factors, inconsistent riveting depth and pressure control lead to poor riveting quality and affect the anti-loosening effect. Second, the impact force during riveting is relatively large, which can easily cause deformation or even breakage of thin-walled parts, affecting structural strength and assembly accuracy. In addition, manual riveting is labor-intensive and inefficient, making it difficult to meet the needs of modern automated and large-scale production. Especially when thin-walled parts need to be riveted at both the bottom and top ends of the workpiece, it further increases the operator's labor intensity and prolongs the gearbox assembly time.

[0004] Therefore, there is an urgent need for a thin-walled part riveting fixture to work with a servo press to complete the riveting operation of thin-walled parts, so as to overcome the defects of manual riveting in the existing technology, thereby improving the efficiency and quality of gearbox assembly and meeting the high precision and high stability requirements for preventing loosening of thin-walled parts during gearbox assembly. Utility Model Content

[0005] The present invention aims to provide a riveting fixture for thin-walled parts to solve the technical problem that the riveting depth and pressure control of existing manual riveting of thin-walled parts are inconsistent, resulting in poor riveting quality and affecting the anti-loosening effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A riveting fixture for thin-walled parts is used in conjunction with a servo press to complete the riveting operation of thin-walled parts. It includes a riveting base, a bottom limiting fixture, a top limiting fixture, and a riveting head arranged sequentially from bottom to top. The output end of the riveting base contacts the bottom thin-walled part. The bottom limiting fixture is used to circumferentially limit the bottom of the workpiece to be riveted. The top limiting fixture is used to circumferentially limit the top of the workpiece to be riveted. The output end of the riveting head contacts the top thin-walled part.

[0007] The principle and advantages of this scheme are: In practical applications, the output end of the riveting base contacts the bottom thin-walled component to support and position the workpiece. The bottom and top limiting fixtures respectively circumferentially limit the bottom and top of the workpiece to be riveted, preventing rotation or displacement during the riveting process. The output end of the riveting head contacts the top thin-walled component, and a servo press controls it to apply precise riveting force, riveting the thin-walled component into the shaft head groove. Compared with existing technologies, this solution has the following advantages: 1. High consistency of riveting: This solution works with a servo press to complete the riveting operation of thin-walled parts. By precisely controlling the riveting force and displacement through the servo press, the problem of inconsistent riveting depth caused by experience differences in manual operation can be avoided, thereby significantly improving the consistency and stability of riveting quality.

[0008] 2. Reduce impact force and lower the risk of workpiece damage: This solution is used in conjunction with a servo press for riveting operations. In other words, a servo press is used to replace the traditional manual hammering method, making the riveting process stable and controllable. This effectively reduces the impact on thin-walled parts, which helps to reduce the risk of deformation or breakage of thin-walled parts and ensures the structural integrity of the workpiece.

[0009] 3. Improve assembly efficiency and reduce labor intensity: This solution can be integrated into automated assembly lines to achieve continuous and efficient riveting operations, significantly reducing the labor intensity of operators and adapting to the needs of modern large-scale production.

[0010] 4. Precise positioning and improved assembly accuracy: This solution achieves precise circumferential positioning of the workpiece through the synergistic effect of the bottom and top limiting fixtures, preventing workpiece offset or rotation during riveting, ensuring accurate riveting position of thin-walled parts, and improving assembly accuracy and reliability.

[0011] 5. Simultaneous riveting of top and bottom thin-walled parts: This solution, through the synergistic effect of the riveting base and the riveting head, combined with the precise positioning of the bottom and top limiting fixtures, can simultaneously complete the riveting of bottom and top thin-walled parts in one clamping process, thereby effectively reducing assembly steps and further improving assembly efficiency and process consistency.

[0012] Preferably, as an improvement, the riveting base includes a base plate, a bottom pad, and a bottom pressure plate arranged sequentially from bottom to top. The top of the base plate has a bottom limiting groove, and the bottom pressure plate is inserted into the bottom limiting groove. The top of the bottom pressure plate is provided with a plurality of bottom pressure blocks. The bottom pad has bottom clearance holes corresponding to the positions of the bottom pressure blocks. The bottom pressure blocks are inserted into the bottom clearance holes at the corresponding positions, and the top of the bottom pressure blocks contacts the bottom of the bottom thin-walled component.

[0013] Beneficial effects: This solution optimizes the structure of the riveting base by adopting a layered combination structure of a base plate, a bottom pad plate, and a bottom pressure plate, and sets limiting grooves, clearance holes, and bottom pressure blocks on the corresponding components, achieving the following technical effects: 1) Improved positioning accuracy and adaptability: The bottom pressure plate is installed in the bottom limiting groove of the base plate by plugging in, which can be flexibly replaced or adjusted according to the size of the workpiece being riveted, enhancing the versatility and adaptability of the tooling; at the same time, the bottom pressure block cooperates with the bottom clearance hole, so that the bottom pressure block acts precisely on the bottom of the thin-walled part, improving the positioning accuracy during riveting.

[0014] 2) Enhance the uniformity and stability of riveting: Multiple bottom pressure blocks are evenly distributed on the bottom pressure plate. Through the clearance holes of the bottom pad, the bottom thin-walled parts are supported and force is applied evenly at multiple points, which helps to reduce local stress concentration during the riveting process and improve the stability of the riveting process and the riveting quality.

[0015] 3) Easy to maintain and replace: The modular and layered structure makes each component detachable and replaceable, which facilitates daily maintenance and quick changeover for different models of thin-walled parts, improving the flexibility and service life of the tooling.

[0016] Preferably, as an improvement, the bottom limiting fixture is provided with a bottom limiting boss at the top, the shape and size of which match the shaft end groove at the bottom of the workpiece to be riveted, and the bottom limiting boss is inserted into the shaft end groove at the bottom of the workpiece to be riveted; the bottom limiting fixture is provided with a bottom riveting hole at the position corresponding to the bottom pressing block, and the bottom pressing block is inserted into the bottom riveting hole at the corresponding position.

[0017] Beneficial effects: This solution optimizes the structure of the bottom limiting fixture, sets a bottom limiting boss that matches the groove at the end of the workpiece shaft, and sets bottom riveting holes at corresponding positions to cooperate with the bottom pressure block, achieving the following technical effects: 1) Achieve precise circumferential positioning of the workpiece bottom: The shape and size of the bottom limiting boss match the shaft end groove of the workpiece to be riveted and are inserted into it, which can effectively prevent the workpiece from rotating or shifting circumferentially during the riveting process, and improve the positioning accuracy and stability of the assembly.

[0018] 2) Ensure a clear and uniform riveting force transmission path: The bottom pressure block is accurately inserted through the bottom riveting hole, so that the riveting force is effectively transmitted from the riveting base to the bottom of the thin-walled part, avoiding uneven riveting or workpiece deformation caused by force offset, and improving the riveting quality.

[0019] 3) Enhance the compatibility and versatility of tooling and workpieces: The bottom limiting boss can be replaced or adjusted according to the shaft end groove structure of different workpiece models, so that the tooling has good adaptability and scalability, and meets the riveting requirements of various specifications of thin-walled parts.

[0020] Preferably, as an improvement, the riveting head includes a top plate, a top pad, and a top pressure plate arranged sequentially from top to bottom. The bottom of the top plate is provided with a top limiting groove, and the top pressure plate is inserted into the top limiting groove. The bottom of the top pressure plate is provided with a plurality of top pressure blocks. The top pad is provided with top clearance holes corresponding to the positions of the top pressure blocks. The top pressure blocks are inserted into the top clearance holes at the corresponding positions, and the bottom of the top pressure blocks is in contact with the top of the top thin-walled component.

[0021] Beneficial effects: This solution optimizes the structure of the riveting head through modularization and layering, employing a combination structure of a top plate, a top pad, and a top pressure plate, and incorporating a top limiting groove, a top clearance hole, and a top pressure block, achieving the following technical effects: 1) Improved riveting accuracy and adaptability: The top pressure plate is inserted into the top limiting groove of the top plate, which is structurally stable and easy to replace. It can be flexibly adjusted according to different specifications of thin-walled parts, improving the versatility and adaptability of the tooling; the top pressure block acts precisely on the top of the thin-walled part to ensure accurate riveting position.

[0022] 2) Achieve uniform force distribution and improve riveting quality: Each top pressure block is evenly distributed on the top pressure plate and contacts the top thin-walled part through the clearance holes on the top pad, making the riveting force distribution more uniform, effectively avoiding local stress concentration, reducing the risk of deformation of thin-walled parts, and improving the riveting quality and consistency.

[0023] 3) Easy maintenance and quick changeover: The layered modular structure makes each component detachable and replaceable, which facilitates daily maintenance and quick changeover for different models of thin-walled parts, improving the flexibility and efficiency of tooling.

[0024] Preferably, as an improvement, the bottom of the top limiting fixture is provided with a top limiting boss, the shape and size of which match the shaft end groove of the top of the workpiece to be riveted, and the top limiting boss is inserted into the shaft end groove of the top of the workpiece to be riveted; the top limiting fixture is provided with a top riveting hole corresponding to the position of the top pressing block, and the top pressing block is inserted into the top riveting hole at the corresponding position.

[0025] Beneficial effects: This solution optimizes and improves the structure of the top limiting fixture, sets a top limiting boss that matches the groove at the top shaft end of the workpiece, and opens a top riveting hole at the corresponding position to cooperate with the top pressure block, achieving the following technical effects: 1) Achieve precise circumferential positioning at the top: The shape and size of the top positioning boss match the shaft end groove at the top of the workpiece to be riveted and is inserted into it, which can effectively prevent the top of the workpiece from rotating or shifting during the riveting process, ensuring the accuracy of the riveting position and the stability of the assembly.

[0026] 2) Ensure uniform transmission of riveting force: The top pressure block is precisely inserted through the top riveting hole and contacts the top thin-walled part, so that the riveting force is uniformly transmitted to the workpiece along the set path, avoiding riveting defects or deformation of thin-walled parts caused by uneven force, and improving the riveting quality.

[0027] 3) Enhance the versatility and replaceability of tooling: The top limiting boss can be replaced according to different workpiece models, giving the tooling good adaptability and expandability. It is suitable for riveting operations of various specifications of thin-walled parts, improving the reuse rate and flexibility of tooling.

[0028] Preferably, as an improvement, it also includes a positioning base, the top of which has a positioning hole, the riveting base is inserted into the positioning hole, and the outer wall of the riveting base is clearance-fitted with the inner wall of the positioning hole.

[0029] Beneficial effects: This solution achieves the following technical effects by introducing a positioning base into the overall structure and using a clearance fit between the riveting base and the positioning hole of the positioning base: 1) Improve the overall tooling positioning accuracy and assembly stability: The positioning base provides a unified reference installation position for the entire riveting tooling. The riveting base achieves fast and accurate positioning and installation through cooperation with the positioning hole, which effectively improves the overall structural stability and positional consistency of the tooling during the riveting process.

[0030] 2) Easy to install, disassemble and replace: The riveting base and the positioning hole adopt a gap fit plug-in method, which makes the riveting base quick to install or disassemble. It is convenient to replace the corresponding riveting tooling module according to different workpiece types, thereby improving the equipment's flexible production capacity and changeover efficiency.

[0031] 3) Enhanced system compatibility and scalability: Through standardized positioning hole settings, it can be adapted to riveting base modules of various structural forms, which enhances the versatility and scalability of the tooling system and is conducive to building a modular and serialized press riveting assembly platform.

[0032] Preferably, as an improvement, it also includes a nylon sheath, which is coaxially disposed above the positioning base with the positioning hole, the inner diameter of the nylon sheath is the same as the inner diameter of the positioning hole, and the bottom of the nylon sheath mates with the top step of the positioning base.

[0033] Beneficial effects: This solution achieves the following technical effects by adding a nylon sheath above the positioning base, coaxially aligning it with the positioning hole and having the same inner diameter, and fitting its bottom with the stepped structure of the positioning base: 1) Effectively protects tooling and workpiece surfaces from damage: The nylon sheath has good wear resistance and surface flexibility. During the process of inserting the riveting base into the positioning hole, it can avoid direct friction between metal parts, prevent scratches or damage to the tooling surface, and reduce the risk of secondary damage to the assembled workpiece.

[0034] 2) Improve the guidance and smoothness of the insertion process: The smooth inner wall of the nylon sheath and the flexible fit between it and the outer wall of the riveting base help improve the guidance performance of the insertion process, reduce assembly resistance, and make the riveting base more smoothly and accurately inserted into the positioning hole, thereby improving clamping efficiency and accuracy.

[0035] 3) Enhanced wear resistance and service life: Nylon material has good self-lubricating and wear resistance. Compared with direct metal mating, nylon sheaths can significantly reduce wear during long-term insertion and removal, extend the service life of the positioning base, and reduce maintenance frequency.

[0036] 4) Improve assembly friendliness while maintaining positioning accuracy: The nylon sheath is coaxial with the positioning hole and has the same inner diameter, which does not affect the original positioning accuracy; at the same time, its flexibility improves the friendliness of the assembly process, especially suitable for multi-variety, small-batch production scenarios with frequent replacement of riveting bases. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0038] Figure 2 for Figure 1 The front view.

[0039] Figure 3 for Figure 1 A sectional view. Detailed Implementation

[0040] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: positioning base 1, riveting base 2, base plate 21, bottom pad 22, bottom pressure plate 23, bottom limiting fixture 3, nylon sheath 4, top limiting fixture 5, riveting pressure head 6, top pressure plate 61, top pad 62, top plate 63, workpiece to be riveted 7, top thin-walled part 71, bottom thin-walled part 72.

[0041] Example A thin-walled part pressing and riveting fixture, used in conjunction with a servo press to... Figure 3 The top thin-walled member 71 and the bottom thin-walled member 72 shown are press-fitted together. Figure 1 The workpiece 7 shown is required to be riveted.

[0042] A thin-walled part riveting fixture, such as Figure 1 , Figure 2 and Figure 3 As shown, the riveting base 2, bottom limiting fixture 3, top limiting fixture 5, and riveting head 6 are arranged sequentially from bottom to top. The output end of the riveting base 2 is in contact with the bottom thin-walled part 72. The bottom limiting fixture 3 is used to circumferentially limit the bottom of the workpiece 7 to be riveted. The top limiting fixture 5 is used to circumferentially limit the top of the workpiece 7 to be riveted. The output end of the riveting head 6 is in contact with the top thin-walled part 71.

[0043] The system also includes a positioning base 1 and a nylon sleeve 4 arranged sequentially from bottom to top. The positioning base 1 has a positioning hole at its top, which, in this embodiment, extends vertically through the upper and lower end faces of the positioning base 1. The positioning base 1 is placed on the pressing base of the servo press. The riveting base 2 and the bottom limiting fixture 3 are vertically slidably inserted into the positioning hole. The outer walls of the riveting base 2 and the bottom limiting fixture 3 are clearance-fitted with the inner wall of the positioning hole. The nylon sleeve 4 is placed on the positioning base 1, coaxially arranged with the positioning hole, and its inner diameter is the same as the inner diameter of the positioning hole. The bottom of the nylon sleeve 4 engages with the top step of the positioning base 1.

[0044] The riveting base 2 includes a base plate 21, a bottom pad 22, and a bottom pressure plate 23 arranged sequentially from bottom to top. A bottom limiting groove is formed at the top center of the base plate 21, and the bottom pressure plate 23 is slidably inserted into the bottom limiting groove. Several bottom pressure blocks are integrally formed on the top of the bottom pressure plate 23, and these bottom pressure blocks are evenly distributed around the axis of the workpiece 7 to be riveted. Bottom clearance holes are formed on the bottom pad 22 corresponding to the positions of the bottom pressure blocks. These bottom clearance holes penetrate vertically through the upper and lower end faces of the bottom pad 22, and the bottom pressure blocks are slidably inserted into the corresponding bottom clearance holes.

[0045] The bottom limiting fixture 3 has an integrally formed bottom limiting boss at its top center position. The shape and size of the bottom limiting boss match the shaft end groove at the bottom of the workpiece 7 to be riveted. The bottom limiting boss is slidably inserted into the shaft end groove at the bottom of the workpiece 7 to be riveted. The bottom limiting fixture 3 has a bottom riveting hole at the position corresponding to the bottom pressing block. The bottom riveting hole extends vertically through the upper and lower end faces of the bottom limiting fixture 3. The bottom pressing block is slidably inserted into the bottom riveting hole at the corresponding position, and the top of the bottom pressing block is in contact with the bottom of the bottom thin-walled part 72.

[0046] The structure of the riveting head 6 is basically the same as that of the riveting base 2, and the riveting head 6 and the riveting base 2 are symmetrically arranged at the top and bottom of the workpiece 7 to be riveted. Specifically, the riveting head 6 includes a top plate 63, a top pad 62, and a top pressure plate 61 arranged sequentially from top to bottom. A top limiting groove is opened at the center of the bottom of the top plate 63, and the top pressure plate 61 is slidably inserted into the top limiting groove. Several top pressure blocks are integrally formed at the bottom of the top pressure plate 61, and the several top pressure blocks are evenly distributed around the axis of the workpiece 7 to be riveted. The top pad 62 has top clearance holes corresponding to the positions of the top pressure blocks. The top clearance holes penetrate the upper and lower end faces of the top pad 62 in the vertical direction, and the top pressure blocks are slidably inserted into the top clearance holes at the corresponding positions.

[0047] The bottom center of the top limiting fixture 5 is integrally formed with a top limiting boss. The shape and size of the top limiting boss match the shaft end groove on the top of the workpiece 7 to be riveted. The top limiting boss is slidably inserted into the shaft end groove on the top of the workpiece 7 to be riveted. The top limiting fixture 5 has a top riveting hole corresponding to the position of the top pressing block. The top riveting hole penetrates the upper and lower end faces of the top limiting fixture 5 vertically. The top pressing block is slidably inserted into the top riveting hole at the corresponding position, and the bottom of the top pressing block contacts the top of the top thin-walled part 71.

[0048] The specific implementation process is as follows: (1) Assemble the lower part of the tooling: First, place the positioning base 1 on the pressing base of the servo press, then insert the base plate 21, bottom pressure plate 23, bottom pad 22 and bottom limit tooling 3 into the positioning hole in sequence. Then, place the nylon sheath 4 on the top of the positioning base 1 in a coaxial manner to complete the assembly of the lower part of the tooling.

[0049] (2) Install the workpiece 7 to be riveted and the thin-walled part: Insert the bottom thin-walled part 72 into the bottom of the workpiece 7 to be riveted, and then insert the bottom end of the workpiece 7 into the nylon sleeve 4, so that the bottom limiting boss of the bottom limiting fixture 3 is inserted into the shaft end groove at the bottom of the workpiece 7 to be riveted, thereby positioning the bottom of the workpiece 7 to be riveted and the lower half of the fixture. At this time, the top of the bottom pressing block is in contact with the bottom of the bottom thin-walled part 72. Then, insert the top thin-walled part 71 into the top of the workpiece 7 to be riveted.

[0050] (3) Assemble the upper part of the tooling: First, place the top limiting tooling 5 coaxially on the top of the workpiece 7 to be riveted, so that the top limiting boss of the top limiting tooling 5 is inserted into the shaft end groove of the top of the workpiece 7 to be riveted, thereby achieving the positioning of the top of the workpiece 7 to be riveted and the upper part of the tooling. Then, place the top pad 62 coaxially on the top of the top limiting tooling 5, so that the positioning clearance hole corresponds one-to-one with the top riveting hole. Then, place the top pressure plate 61 coaxially on the top pad 62, so that the top pressure block passes through the corresponding top clearance hole and top riveting hole in sequence. At this time, the bottom of the top pressure block contacts the top of the top thin-walled part 71. Then, place the top plate 63 coaxially on the top pressure plate 61, so that the top pressure plate 61 is inserted into the top limiting groove of the top plate 63, thus completing the assembly of the upper part of the tooling.

[0051] (4) Riveting operation: Start the servo press, and the output end of the servo press contacts the top plate 63, applying a vertically downward force to the top, pushing the upper part of the fixture downward, so that the top thin-walled part 71 in contact with the top pressing block is riveted downward into the top shaft wall groove of the workpiece 7 to be riveted. At the same time, the bottom plate 21 in contact with the pressing base of the servo press is subjected to a vertically upward reaction force, so that the lower part of the fixture is pushed upward, thereby riveting the bottom thin-walled part 72 in contact with the bottom pressing block into the bottom shaft wall groove of the workpiece 7 to be riveted.

[0052] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A riveting fixture for thin-walled parts, characterized in that: This device is used to work with a servo press to perform riveting operations on thin-walled parts. It includes a riveting base, a bottom limiting fixture, a top limiting fixture, and a riveting head arranged from bottom to top. The output end of the riveting base contacts the bottom thin-walled part. The bottom limiting fixture is used to circumferentially limit the bottom of the workpiece to be riveted. The top limiting fixture is used to circumferentially limit the top of the workpiece to be riveted. The output end of the riveting head contacts the top thin-walled part.

2. The thin-walled part press-in tooling of claim 1, wherein: The riveting base includes a base plate, a bottom pad, and a bottom pressure plate arranged sequentially from bottom to top. The top of the base plate has a bottom limiting groove, and the bottom pressure plate is inserted into the bottom limiting groove. The top of the bottom pressure plate is provided with a number of bottom pressure blocks. The bottom pad has bottom clearance holes corresponding to the positions of the bottom pressure blocks. The bottom pressure blocks are inserted into the bottom clearance holes at the corresponding positions, and the top of the bottom pressure blocks is in contact with the bottom of the bottom thin-walled part.

3. The thin-walled part press-in tooling of claim 2, wherein: The bottom limiting fixture is provided with a bottom limiting boss at the top. The shape and size of the bottom limiting boss match the shaft end groove at the bottom of the workpiece to be riveted. The bottom limiting boss is inserted into the shaft end groove at the bottom of the workpiece to be riveted. The bottom limiting fixture is provided with a bottom riveting hole at the position corresponding to the bottom pressing block. The bottom pressing block is inserted into the bottom riveting hole at the corresponding position.

4. The thin-walled part press-in tooling of claim 3, wherein: The riveting head includes a top plate, a top pad, and a top pressure plate arranged sequentially from top to bottom. The bottom of the top plate has a top limiting groove, and the top pressure plate is inserted into the top limiting groove. The bottom of the top pressure plate is provided with a number of top pressure blocks. The top pad has a top clearance hole corresponding to the position of the top pressure block. The top pressure block is inserted into the top clearance hole at the corresponding position, and the bottom of the top pressure block is in contact with the top of the top thin-walled part.

5. The thin-walled part press-in tooling of claim 4, wherein: The bottom of the top limiting tooling is provided with a top limiting boss. The shape and size of the top limiting boss match the shaft end groove on the top of the workpiece to be riveted. The top limiting boss is inserted into the shaft end groove on the top of the workpiece to be riveted. The top limiting fixture has a top riveting hole at the position corresponding to the top pressure block, and the top pressure block is inserted into the top riveting hole at the corresponding position.

6. The thin-walled part press-in tooling of claim 5, wherein: It also includes a positioning base, the top of which has a positioning hole. The riveting base is inserted into the positioning hole, and the outer wall of the riveting base is clearance-fitted with the inner wall of the positioning hole.

7. The thin-walled part press-in tooling of claim 6, wherein: It also includes a nylon sheath, which is coaxially positioned above the positioning base with the positioning hole. The inner diameter of the nylon sheath is the same as the inner diameter of the positioning hole, and the bottom of the nylon sheath mates with the top step of the positioning base.

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