Pneumatic rivet jig
By designing a pneumatic rivet fixture, using the method of fixed block limit and multiple pressing cylinder stamping, the problem of difficult workpiece balance when riveting annular workpieces is solved, significantly reducing the skew of the rivets and improving the processing quality.
Patent Information
- Application Number
- CN202421778767.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-25
AI Technical Summary
When riveting annular workpieces, it is difficult to control the balance of the workpieces, resulting in skew during the rivet pressing process and affecting the processing quality.
A pneumatic rivet fixture is designed, including a base, a fixed block and a press-fit cylinder, which limits the workpiece by a fixed block, and uses multiple press-fit cylinders to stamp the rivets from all directions, reducing the possibility of workpiece movement and rivet skew.
It effectively reduces the skew during the rivet pressing process, improves the processing quality, and simplifies the installation and disassembly of the pressing cylinder.
Smart Images
Figure CN222790537U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rivet pressing, in particular to a pneumatic rivet fixture. Background Art
[0002] Some workpiece products require riveting during the manufacturing process. Rivets or rivet bolts are pressed into the workpiece material to expand the material radially, causing the material to plastically deform or to connect and fix the materials.
[0003] There is a kind of annular workpiece in the prior art. In order to perform riveting, a plurality of holes are opened on the side wall of the workpiece. When riveting, rivets or rivet bolts are pressed into the holes. In the actual practical process, it is necessary to manually insert the rivets or rivet bolts into the holes first, and then use the pressing equipment to press the rivets one by one. Due to the circular shape of the workpiece, it is difficult to control the balance of the workpiece during the pressing process, resulting in skewness between the workpiece and the rivet during the pressing process, and the overall processing quality is poor. Utility Model Content
[0004] In order to reduce rivet skew and improve processing quality, the present application provides a pneumatic rivet fixture.
[0005] The pneumatic rivet fixture provided in this application adopts the following technical solution:
[0006] A pneumatic rivet fixture comprises a base, a fixing block and a pressing cylinder, wherein the pressing cylinder is arranged on the base, the fixing block is arranged on the base, the fixing block is provided with a pressing hole, and the fixing block is provided with a positioning block.
[0007] By adopting the above technical solution, a plurality of pressing cylinders are provided and the piston rods of the pressing cylinders are aligned with the pressing holes. When pressing is required, the workpiece is put on the fixed block so that the slotted hole on the workpiece is put on the positioning block, and the hole of the workpiece that needs to be riveted is aligned with the pressing hole. The rivet is inserted into the hole of the workpiece, and the rivet part is inserted into the pressing hole. At this time, the pressing cylinder is started, and the pressing cylinder presses the rivet to perform the riveting operation, thereby completing the riveting. In this process, the workpiece is fixed on the fixed block, and the pushing force borne by the workpiece during pressing is offset by multiple pressing cylinders, thereby reducing the possibility of movement of the workpiece due to the pressing force, reducing the probability of rivet pressing crooked, and improving the processing quality.
[0008] Preferably, the base is provided with an assembly groove, and the pressing cylinder is provided with an assembly block, and the assembly block is inserted into the assembly groove.
[0009] By adopting the above technical solution, the assembly block on the pressing cylinder is inserted into the assembly groove of the base, and the pressing cylinder is limited to a certain extent by the assembly block pressing against the inner wall of the assembly groove to ensure that the pressing cylinder is aligned with the pressing hole, thereby reducing the possibility of the rivet pressing being skewed due to the skewness of the pressing cylinder, thereby improving the processing quality, and at the same time, the pressing cylinder can be easily removed from the base, thereby facilitating the inspection and maintenance of the pressing cylinder, and also facilitating replacement when problems occur.
[0010] Preferably, the pressing cylinder is provided with a locking assembly, which is used to lock the pressing cylinder on the base, and the locking assembly includes a locking rod and a locking spring, the assembly block is provided with a locking groove, the locking rod is slidably arranged in the locking groove, the locking spring is arranged in the locking groove and connected to the locking rod, the assembly block is provided with a locking support groove communicated with the locking groove, the inner wall of the assembly groove is provided with a locking hole, and the locking rod is inserted into the locking hole.
[0011] By adopting the above technical solution, the pressing cylinder is locked on the base through the locking assembly. When disassembling the pressing cylinder, the locking rod is pushed through the locking support groove to compress the locking spring, so that the locking rod withdraws from the locking hole. At this time, the pressing cylinder is pulled out, so that the assembly block is separated from the assembly groove to complete the disassembly. When installing, the locking rod is pushed through the locking support groove to compress the locking spring, the assembly block is inserted into the assembly groove, the locking rod is released, and the locking spring recovers to push the locking rod into the locking hole to complete the installation. The operation is simple and convenient, and the stability of the fixing of the pressing cylinder is improved.
[0012] Preferably, the locking assembly further comprises a locking support rod, the locking support rod is slidably disposed in a locking support groove, and the locking support rod is connected to the locking rod.
[0013] By adopting the above technical solution, the locking rod can be driven to move more conveniently through the locking support rod, thereby facilitating the disassembly and installation of the pressing cylinder and improving the convenience of replacing the pressing cylinder.
[0014] Preferably, the fixing block is provided with mounting bolts, and the mounting bolts are used to mount the fixing block on the base.
[0015] By adopting the above technical solution, the fixing block is mounted on the base by means of mounting bolts. When the fixing block is damaged, the mounting bolts can be unscrewed to remove the fixing block from the base for replacement.
[0016] Preferably, the base is provided with a mounting block, and the mounting block is inserted into the pressing hole.
[0017] By adopting the above technical solution, the pressing hole is communicated with the bottom wall of the fixing block. When the fixing block is installed on the base, the mounting block is inserted into the pressing hole for positioning. At the same time, the mounting block is abutted against the inner wall of the pressing hole to limit the fixing block, thereby reducing the possibility of the fixing block being displaced by force during the pressing process, thereby reducing the possibility of the rivet being skewed during pressing, and improving the processing quality.
[0018] Preferably, the mounting bolt passes through the positioning block, and the positioning block is provided with a positioning groove.
[0019] By adopting the above technical solution, the mounting bolt passes through the positioning block, the contact area between the mounting bolt and the fixed block is increased, and the stability of the installation of the fixed block is improved. At the same time, a positioning groove is provided on the positioning block. When the workpiece is installed, the insert block on the workpiece is inserted into the positioning groove, thereby improving the stability of the assembly and fixation of the workpiece and the fixed block, reducing the possibility of the workpiece being displaced or rotated by force during pressing, thereby reducing the possibility of the rivet pressing being skewed, and improving the processing quality.
[0020] Preferably, the base is provided with an auxiliary block, the auxiliary block is provided with an auxiliary groove, and a pressing rod is detachably provided on the piston rod of the pressing cylinder, and the pressing rod passes through the auxiliary groove.
[0021] By adopting the above technical solution, the pressing rod can be detachably arranged on the piston rod of the pressing cylinder, which is convenient for replacement when the pressing rod is damaged during long-term use. At the same time, the pressing rod passes through the auxiliary groove on the auxiliary block to limit the pressing rod, thereby reducing the probability of the rivet pressing being skewed due to the skewness of the pressing rod and improving the processing quality.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. By setting a base, a fixing block, a pressing cylinder, a pressing hole and a positioning block, during processing, the annular workpiece to be processed is sleeved on the fixing block of the base, so that the positioning block is inserted into the yielding slot on the workpiece, and the hole on the side wall of the annular workpiece is aligned with the pressing hole, and then the rivet is inserted into the slot on the annular workpiece, and the end of the rivet is inserted into the pressing hole, and the pressing cylinder is started for riveting. During this process, the pressing cylinders in all directions are stamped together, and the workpiece is limited by the fixing block, so as to reduce the possibility of displacement and skewness of the workpiece during processing, thereby reducing the possibility of skewness of the rivet during riveting, and improving the processing quality;
[0024] 2. By providing an assembly block, an assembly groove, a locking rod, a locking spring, a locking support rod, a locking groove, a locking support groove and a locking hole, when installing the press cylinder, the locking support rod is pushed to slide in the locking support groove, thereby driving the locking rod to slide in the locking groove and compressing the locking spring, the assembly block is inserted into the assembly groove, the locking support rod is released, the locking spring is restored to push the locking rod to insert into the locking hole, and the installation is completed. When disassembling, the locking support rod is pushed to drive the locking rod to compress the locking spring and disengage from the locking hole, and the assembly block is pulled out of the assembly groove at this time, thereby completing the disassembly. The operation is simple and convenient, and it is convenient to replace the press cylinder after a problem occurs;
[0025] 3. By setting the mounting bolts and mounting blocks, the fixing block can be removed from the base for replacement through the mounting bolts. During installation, the mounting block is inserted into the press-fit hole on the fixing block, and the mounting block is limited to improve the stability of the connection between the base and the fixing block, thereby improving the stability of the workpiece fixation during processing, reducing the possibility of the rivet being skewed due to the movement of the workpiece, and improving the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is an overall schematic diagram of a pneumatic rivet fixture provided in an embodiment of the present application.
[0027] Figure 2 It is a cross-sectional view used to illustrate the structure of the locking assembly.
[0028] Figure 3 It is a cross-sectional view used to reflect the connection relationship between the pressing rod and the pressing cylinder piston rod.
[0029] Explanation of the accompanying drawings: 1. Base; 11. Assembly groove; 111. Locking hole; 12. Mounting block; 13. Auxiliary block; 131. Auxiliary groove; 2. Fixing block; 21. Positioning block; 22. Positioning groove; 23. Press-fit hole; 24. Mounting bolt; 3. Press-fit cylinder; 31. Assembly block; 311. Locking groove; 312. Locking support groove; 32. Press-fit rod; 321. Threaded rod; 322. Threaded hole; 4. Locking assembly; 41. Locking rod; 42. Locking spring; 43. Locking support rod. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-3 This application is described in further detail.
[0031] The present application embodiment discloses a pneumatic rivet fixture. Figures 1 to 3, which includes a base 1, a fixed block 2 and six pressing cylinders 3. The fixed block 2 is circular and is arranged on the base 1. A positioning block 21 is fixedly arranged on the top wall of the fixed block 2. An arc-shaped positioning groove 22 is arranged at each end of the positioning block 2. Six pressing holes 23 are dispersedly arranged on the side wall of the fixed block 2, and the pressing holes 23 pass through the top wall and the bottom wall of the fixed block 2. The pressing cylinder 3 is fixedly arranged with two assembly blocks 31, and the length of the assembly block 31 is greater than the width of the pressing cylinder 3. A plurality of assembly grooves 11 are arranged on the surface of the base 1, and the assembly blocks 31 are adapted to be inserted into the assembly grooves 11, and the pressing cylinders 3 are aligned with the pressing holes 23 one by one. The pressing cylinder 3 is provided with a locking component 4 for locking and fixing the pressing cylinder 3 on the base 1. The workpiece to be processed is put on the fixed block 2 so that the slot on the workpiece is put on the positioning block 21, the insert block on the workpiece is inserted into the positioning slot 22, and the hole on the side wall of the workpiece is aligned with the pressing hole 23, and the rivet is inserted into the hole on the side wall of the workpiece and into the pressing hole 23, and then the pressing cylinder 3 is started for pressing. During the stamping process, the thrusts generated by the six pressing cylinders 3 on the workpiece offset each other, and cooperate with the fixed block 2 to limit and tighten the workpiece, thereby reducing the possibility of rivet skewness caused by workpiece movement and improving the processing quality.
[0032] In order to improve the convenience of installation and disassembly of the press cylinder 3, refer to Figure 1 and Figure 2 The locking assembly 4 includes a locking rod 41, a locking support rod 43 and a locking spring 42. The locking support rod 43 is integrally arranged on the side wall of the locking rod 41. The assembly block 31 is provided with a locking groove 311 along the length direction. The locking rod 41 is adapted to be slidably arranged in the locking groove 311. The locking spring 42 is arranged in the locking groove 311 and connects the inner wall of the locking groove 311 and the side wall of the locking rod 41. The surface of the assembly block 31 is provided with a locking support groove 312 that is the same as the locking groove 311. The locking support rod 43 is adapted to be slidably arranged in the locking support groove 312. The inner side wall of the assembly groove 11 is provided with a locking hole 111. The locking rod 41 is adapted to be inserted into the locking hole 111. During installation, the locking support rod 43 is pushed to drive the locking rod 41 to compress the locking spring 42, so that the locking rod 41 retracts into the locking groove 311, and the assembly block 31 is inserted into the assembly groove 11, and the locking support rod 43 is released, the locking spring 42 recovers and pushes the locking rod 41 to insert into the locking hole 111 to complete the installation. During disassembly, the locking support rod 43 is pushed to drive the locking rod 41 to compress the locking spring 42 and disengage from the locking hole 111, and then the assembly block 31 is pulled out to complete the disassembly, which is simple and convenient to operate.
[0033] To improve the convenience of replacement, refer to Figure 1 and Figure 3The fixing block 2 is provided with a mounting bolt 24, which is used to mount the fixing block 2 on the base 1, and the mounting bolt 24 passes through the positioning block 21. Six cylindrical mounting blocks 12 are integrally fixedly provided on the surface of the base 1, and the mounting blocks 12 are adapted to be inserted into the press-fit holes 23, and the side walls of the mounting blocks 12 are located in the press-fit holes 23. Six auxiliary blocks 13 are integrally fixedly provided on the surface of the base 1, and the auxiliary blocks 13 are arranged between the mounting blocks 12 and the assembly groove 11. The auxiliary blocks 13 are provided with auxiliary grooves 131 on the surface, and the auxiliary grooves 131 pass through the side walls close to the mounting blocks 12 and the side walls close to the assembly groove 11. The piston rod of the press-fitting cylinder 3 is provided with a press-fitting rod 32, and the press-fitting rod 32 is adapted to pass through the auxiliary groove 131, and the top wall of the mounting block 12 is lower than the bottom wall of the press-fitting rod 32. The pressing rod 32 is integrally provided with a threaded rod 321 near one end of the pressing cylinder 3, and the piston rod of the pressing cylinder 3 is provided with a threaded hole 322. The threaded rod 321 is adapted to be inserted into the threaded hole 322 and is threadedly connected with the threaded hole 322. The pressing rod 32 is detachably provided by the thread, and it is convenient to replace the pressing rod 32 when it is damaged during the pressing process. The installation bolt 24 is provided so that the fixing block 2 and the base 1 can be disassembled, which is convenient for replacement when problems occur. At the same time, the installation block 12 is inserted into the pressing hole 23 to limit the fixing block 2, thereby improving the stability of the installation of the fixing block 2.
[0034] The implementation principle of a pneumatic rivet fixture in an embodiment of the present application is as follows: a fixed block 2 is provided to position and fix the workpiece on a base 1, and rivets are punched simultaneously from all directions, so that the thrusts applied to the workpiece by each pressing cylinder 3 partially offset each other, and the fixed block 2 limits the workpiece, thereby reducing the possibility of the workpiece moving crookedly or shaking during processing, thereby reducing the possibility of crookedness caused by rivet punching and improving the processing quality.
[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A pneumatic rivet fixture, characterized in that: The invention comprises a base (1), a fixing block (2) and a pressing cylinder (3), wherein the pressing cylinder (3) is arranged on the base (1), the fixing block (2) is arranged on the base (1), the fixing block (2) is provided with a pressing hole (23), and the fixing block (2) is provided with a positioning block (21).
2. A pneumatic rivet fixture according to claim 1, characterized in that: The base (1) is provided with an assembly groove (11), and the pressing cylinder (3) is provided with an assembly block (31), and the assembly block (31) is inserted into the assembly groove (11).
3. A pneumatic rivet fixture according to claim 2, characterized in that: The pressing cylinder (3) is provided with a locking assembly (4), and the locking assembly (4) is used to lock and fix the pressing cylinder (3) on the base (1). The locking assembly (4) comprises a locking rod (41) and a locking spring (42). The assembly block (31) is provided with a locking groove (311), and the locking rod (41) is slidably arranged in the locking groove (311). The locking spring (42) is arranged in the locking groove (311) and is connected to the locking rod (41). The assembly block (31) is provided with a locking support groove (312) which is in communication with the locking groove (311). The inner wall of the assembly groove (11) is provided with a locking hole (111), and the locking rod (41) is inserted into the locking hole (111).
4. The pneumatic rivet fixture according to claim 3, characterized in that: The locking assembly (4) further comprises a locking support rod (43), wherein the locking support rod (43) is slidably disposed in the locking support groove (312), and the locking support rod (43) is connected to the locking rod (41).
5. The pneumatic rivet fixture according to claim 1, characterized in that: The fixing block (2) is provided with a mounting bolt (24), and the mounting bolt (24) is used to mount the fixing block (2) on the base (1).
6. The pneumatic rivet fixture according to claim 5, characterized in that: The base (1) is provided with a mounting block (12), and the mounting block (12) is inserted into the pressing hole (23).
7. The pneumatic rivet fixture according to claim 5, characterized in that: The mounting bolt (24) passes through the positioning block (21), and the positioning block (21) is provided with a positioning groove (22).
8. The pneumatic rivet fixture according to claim 1, characterized in that: The base (1) is provided with an auxiliary block (13), the auxiliary block (13) is provided with an auxiliary groove (131), and a pressing rod (32) is detachably provided on the piston rod of the pressing cylinder (3), and the pressing rod (32) passes through the auxiliary groove (131).