Flexible joint assembly machining jig
By designing a fixture suitable for flexible joint assemblies, the problem of fixing irregularly shaped front and rear tubes was solved, achieving convenience and stability in welding, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU CHANGLIAN WAVE TUBE CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-09
AI Technical Summary
Existing technologies cannot effectively fix irregularly shaped front and rear tubes, leading to welding difficulties and failing to meet the processing requirements of flexible joint assemblies.
A fixture was designed, comprising a base, a front tube clamping mechanism, a rear tube clamping mechanism, and a support platform. The front tube and rear tube are clamped by front tube cylinders and rear tube cylinders respectively, and the metal corrugated pipe is supported by the support platform. Combined with the flexible adjustment of the hand-cranked slide, the butt welding of the front tube and the metal corrugated pipe can be achieved.
The fixture has a simple structure and is easy to use, which improves welding efficiency and product quality, ensures stable fixing of the front and rear tubes, and facilitates the processing of the flexible joint assembly.
Smart Images

Figure CN224333827U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of fixtures for machining flexible joint assemblies, and in particular to a fixture for machining flexible joint assemblies. Background Technology
[0002] Currently, such as Figure 1 The flexible joint assembly 7 shown includes a front tube 71, a metal bellows 72, and a rear tube 73, with the metal bellows fixed between the front tube and the rear tube by welding.
[0003] During welding, the front tube, the corrugated metal tube, and the rear tube need to be fixed in place for welding. However, since the front tube and the rear tube are irregularly shaped, conventional clamps cannot fix them in place. There is an urgent need to develop a clamp that is easy to hold and can assist in welding. Utility Model Content
[0004] The purpose of this application is to provide a fixture for machining flexible joint assemblies to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides a fixture for machining flexible joint assemblies, employing the following technical solution:
[0006] A fixture for machining a flexible joint assembly includes a base, a front tube clamping mechanism, a rear tube clamping mechanism, and a support platform. The front tube clamping mechanism is slidably disposed on the base, the rear tube clamping mechanism is fixed on the base, and the support platform is fixed on the base and disposed between the front tube clamping mechanism and the rear tube clamping mechanism.
[0007] The front tube clamping mechanism includes a base plate, a front tube clamping frame, a front tube cylinder, and a front tube support block. The front tube clamping frame and the front tube support block are respectively fixed on the base plate. The front tube clamping frame has a front tube slot. The front tube cylinder is fixed on the front tube clamping frame and is correspondingly arranged with the front tube slot. A front tube pressure block is fixed to the piston rod end of the front tube cylinder.
[0008] The rear tube clamping mechanism includes a rear tube clamping frame, a rear tube support block, and a rear tube cylinder. The rear tube clamping frame is inclinedly connected to the worktable, the rear tube support block is fixed to the worktable, the rear tube clamping frame is provided with a rear tube slot, the rear tube cylinder is fixed to the rear tube clamping frame and is correspondingly provided with the rear tube slot, and a rear tube pressure block is fixed to the piston rod end of the rear tube cylinder.
[0009] Preferably, the workbench surface is provided with a hand-cranked slide, and the base plate of the front tube clamping mechanism is fixed on the slide of the hand-cranked slide.
[0010] By adopting the above technical solution, the hand-cranked slide table can be flexibly adjusted forward and backward according to the needs of the staff, making it convenient for the staff to operate.
[0011] The support platform has an arc-shaped groove on its surface, which is used to place the bellows in the flexible joint assembly.
[0012] Mounting seats are provided on both the base plate and the worktable, and the front tube clamp, front tube support block, rear tube clamp, and rear tube support block are respectively fixed on the mounting seats.
[0013] Preferably, in order to improve the clamping effect, rubber pads are fixed to the ends of both the front tube clamping block and the rear tube clamping block.
[0014] In summary, this application includes at least one of the following beneficial technical effects: the fixture for processing flexible joint assembly has a simple structure and is easy to use. By setting a rear tube clamping mechanism to clamp the rear tube and a support platform to assist in supporting the metal bellows, it is convenient for workers to weld. The front tube clamping mechanism is used to connect the front tube and the metal bellows, which not only facilitates welding, but also makes it easier to clamp and fix the front and rear tubes, greatly improving production efficiency and product quality. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure used in the prior art to illustrate the flexible joint assembly.
[0016] Figure 2 This is a structural schematic diagram of an embodiment of this application.
[0017] Figure 3 These are schematic diagrams illustrating the usage states from different perspectives of embodiments of this application.
[0018] Explanation of reference numerals in the attached drawings: 1. Base; 2. Front tube clamping mechanism; 21. Base plate; 22. Front tube clamping frame; 221. Front tube clamping slot; 23. Front tube cylinder; 231. Front tube pressing block; 24. Front tube support block; 3. Rear tube clamping mechanism; 31. Rear tube clamping frame; 311. Rear tube clamping slot; 32. Rear tube support block; 33. Rear tube cylinder; 331. Rear tube pressing block; 4. Support platform; 5. Hand-cranked slide; 6. Mounting base. Detailed Implementation
[0019] The following is in conjunction with the appendix Figure 2-3 This application will be described in further detail.
[0020] This application discloses a fixture for machining flexible joint assemblies, referring to... Figure 2-3The system includes a base 1, a front tube clamping mechanism 2, a rear tube clamping mechanism 3, and a support platform 4. The front tube clamping mechanism 2 is slidably mounted on the base 1, the rear tube clamping mechanism 3 is fixed on the base 1, and the support platform 4 is fixed on the base 1 and positioned between the front tube clamping mechanism 2 and the rear tube clamping mechanism 3. An arc-shaped groove is provided on the surface of the support platform 4 for placing the bellows in the flexible joint assembly.
[0021] The front tube clamping mechanism 2 includes a base plate 21, a front tube clamping frame 22, a front tube cylinder 23, and a front tube support block 24. The front tube clamping frame 22 and the front tube support block 24 are respectively fixed on the base plate 21. The front tube clamping frame 22 has a front tube slot 221. The front tube cylinder 23 is fixed on the front tube clamping frame 22 and is correspondingly arranged with the front tube slot 221. A front tube pressure block 231 is fixed to the end of the piston rod of the front tube cylinder 23.
[0022] The rear tube clamping mechanism 3 includes a rear tube clamping frame 31, a rear tube support block 32, and a rear tube cylinder 33. The rear tube clamping frame 31 is inclinedly connected to the worktable, the rear tube support block 32 is fixed on the worktable, the rear tube clamping frame 31 is provided with a rear tube slot 311, the rear tube cylinder 33 is fixed on the rear tube clamping frame 31 and is provided corresponding to the rear tube slot 311, and a rear tube pressure block 331 is fixed to the piston rod end of the rear tube cylinder 33.
[0023] To ensure the clamping effect, rubber pads are fixed to the ends of both the front tube clamping block 231 and the rear tube clamping block 331.
[0024] Reference Figure 2 To facilitate operation by staff, a hand-cranked slide 5 is provided on the surface of the workbench. The base plate 21 of the front tube clamping mechanism 2 is fixed on the slide of the hand-cranked slide 5. The hand-cranked slide 5 can be flexibly adjusted back and forth according to the needs of the staff.
[0025] Reference Figure 2 Mounting bases 6 are provided on the base plate 21 and the worktable. The front tube clamp 22, the front tube support block 24, the rear tube clamp 31 and the rear tube support block 32 are fixed on the mounting bases 6 respectively.
[0026] The implementation principle of a fixture for machining a flexible joint assembly according to an embodiment of this application is as follows:
[0027] During welding, the worker places the rear tube on the rear tube support block 32 and clamps it in the rear tube clamping slot 311. The rear tube cylinder 33 pushes the rear tube pressing block 331 to press the rear tube onto the rear tube clamping frame 31. After that, the worker inserts one end of the metal corrugated pipe into the rear tube and welds it. During welding, the support platform 4 can support the metal corrugated pipe, which greatly facilitates the worker's welding.
[0028] After the rear tube is welded, the worker fixes the front tube into the front tube clamping mechanism 2 and drives the front tube to move towards the metal bellows side by using the hand-cranked slide table 5. After the front tube and the metal bellows are connected, the worker welds the front tube and the metal bellows together.
[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A fixture for machining a flexible joint assembly, characterized in that: It includes a base (1), a front tube clamping mechanism (2), a rear tube clamping mechanism (3) and a support platform (4). The front tube clamping mechanism (2) is slidably disposed on the base (1), the rear tube clamping mechanism (3) is fixed on the base (1), and the support platform (4) is fixed on the base (1) and disposed between the front tube clamping mechanism (2) and the rear tube clamping mechanism (3). The front tube clamping mechanism (2) includes a base plate (21), a front tube clamping frame (22), a front tube cylinder (23), and a front tube support block (24). The front tube clamping frame (22) and the front tube support block (24) are respectively fixed on the base plate (21). The front tube clamping frame (22) has a front tube slot (221). The front tube cylinder (23) is fixed on the front tube clamping frame (22) and is correspondingly arranged with the front tube slot (221). The piston rod end of the front tube cylinder (23) is fixed with a front tube pressure block (231). The rear tube clamping mechanism (3) includes a rear tube clamping frame (31), a rear tube support block (32), and a rear tube cylinder (33). The rear tube clamping frame (31) is inclinedly connected to the base (1). The rear tube support block (32) is fixed on the base (1). The rear tube clamping frame (31) is provided with a rear tube slot (311). The rear tube cylinder (33) is fixed on the rear tube clamping frame (31) and is provided in correspondence with the rear tube slot (311). The piston rod end of the rear tube cylinder (33) is fixed with a rear tube pressure block (331).
2. The fixture for machining flexible joint assemblies according to claim 1, characterized in that: The base (1) is provided with a hand-cranked slide (5) on its surface, and the base plate (21) of the front tube clamping mechanism (2) is fixed on the slide of the hand-cranked slide (5).
3. The fixture for machining flexible joint assemblies according to claim 1, characterized in that: The support platform (4) has an arc-shaped groove on its surface, which is used to place the bellows in the flexible joint assembly.
4. The fixture for machining flexible joint assemblies according to claim 1, characterized in that: Mounting seats (6) are provided on both the base plate (21) and the base (1). The front tube clamp (22), the front tube support block (24), the rear tube clamp (31) and the rear tube support block (32) are respectively fixed on the mounting seats (6).
5. The fixture for machining flexible joint assemblies according to claim 1, characterized in that: Rubber pads are fixed to the ends of both the front tube pressure block (231) and the rear tube pressure block (331).