Large-diameter thin-wall adjustable riveting tool and method
By setting up an adjustment mechanism on large-diameter thin-wall riveting workpieces, the problem that existing riveting machines and fixtures cannot ensure riveting quality and stability is solved, and a high-quality and high-stability riveting process is achieved, which is suitable for batch processing and production.
Patent Information
- Application Number
- CN202411952732.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-18
AI Technical Summary
In the existing mechanical processing large-diameter thin-wall riveting process, the riveting workpieces of the riveting machine have riveting limitations, and the riveting fixture cannot ensure the riveting quality and stability.
A large-diameter thin-wall adjustable riveting tool is designed. By setting up an adjustment mechanism on the riveting workpiece, including parallel limit blocks, angle limit blocks, coaxial adjustment blocks and screw handwheel adjustment mechanisms, the full adjustment of the riveting workpiece is achieved, ensuring the coaxiality, parallelism and precision between the upper cover and the lower cover.
It improves the quality and stability of the riveting process, ensures the fatigue resistance of large-diameter thin-wall riveting parts, and is suitable for mass processing and production.
Smart Images
Figure CN119634654A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a large-diameter thin-wall adjustable riveting tool and method. Background Art
[0002] In the mechanical processing industry, riveting is a method of connecting multiple parts by using axial force to thicken the nail rod in the rivet hole of the part and form a nail head, or two plates of small thickness are connected together by drilling holes in their parts, then putting rivets in, and using a rivet gun to rivet the rivets. Riveting types are divided into active riveting, fixed riveting, and sealed riveting. Riveting is also divided into cold riveting and hot riveting. Therefore, the riveted workpiece produces the required deformation through the extrusion of the rivet head and the workpiece. When the rivet head is riveted, the contact between the rivet head and the rivet is a point. Under the action of pressure, the contact point begins to deform, and then the swinging motion of the rivet head causes each point on the motion trajectory to deform point by point, thereby extending the deformation to the entire rivet end face. Metal riveting can be performed on ceramic, plastic, and wooden workpieces. The riveting process can ensure high fatigue strength and is widely used.
[0003] The riveting quality and stability between parts are closely related to the riveting fixtures. There are radial riveting machines and rotary rolling machines on the market. Riveting machines have better riveting effects and stable processes. Rotary rolling machines are widely used in the field of rough processing, but do not require high precision and surface quality. Riveting machines still cannot achieve riveting processing for large-diameter and thin-walled riveted parts. Riveting machines are not suitable for workpieces that are inconvenient to clamp, especially batch processing. Riveting machines have limitations in processing operations and require riveting tools to achieve riveting processing. In addition, the existing riveting fixtures have poor processability and it is difficult to ensure quality. Summary of the invention
[0004] The problem to be solved by the present invention is the riveting limitations of the riveting machine in the existing mechanical processing large-diameter thin-wall riveting process, and the inability of the riveting fixture to ensure the riveting quality and stability. The present invention provides a large-diameter thin-wall adjustable riveting tool and method. The parallel limit block, angle limit block, coaxiality adjustment block and screw handwheel adjustment mechanism of the adjustment mechanism arranged on the large-diameter thin-wall riveted workpiece are fully adjusted, fixed and riveted, so that the coaxiality, parallelism and precision of the upper cover and the lower cover meet the requirements in size, and the riveting process performance ensures high fatigue strength.
[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a large-diameter thin-walled adjustable riveting tool, comprising a base, a gantry frame is fixedly mounted on the base, a positioning seat is installed in the base, a tray is arranged on the positioning seat, a riveted workpiece is mounted on the tray, the riveted workpiece is in a cylindrical shape, a backpack mechanism is mounted on the riveted workpiece, an adjustment mechanism is installed on the riveted workpiece, and the riveted workpiece and the adjustment mechanism are fixedly connected;
[0006] Wherein, a backpack mounting seat is installed inside the gantry frame, the backpack mechanism is fixed on the backpack mounting seat, an adjustment mechanism frame is arranged on the top of the gantry frame, and the adjustment mechanism is installed on the adjustment mechanism frame;
[0007] The adjustment mechanism includes a parallel limit block, an angle limit block, a coaxial adjustment block, a baffle plate, and a screw handwheel adjustment mechanism installed on the upper positioning plate. The upper positioning plate is a hub type on which parallel limit blocks and angle limit blocks are evenly installed. The parallel limit block is a moving block arranged in the bracket groove and fixedly mounted on the upper positioning plate. The upper end of the parallel limit block is pressed against the gantry frame, and the upper end of the angle limit block is pressed against the baffle plate.
[0008] The baffle plate, coaxiality adjustment block and screw handwheel adjustment mechanism are respectively installed at the center of the upper positioning plate and are mounted on the adjustment mechanism frame. The coaxiality adjustment block is mounted on the screw handwheel adjustment mechanism and locked by a locking screw; the screw handwheel adjustment mechanism includes a screw handwheel and a shelf, and the adjustment mechanism is placed on the gantry frame through the shelf.
[0009] Preferably, the riveted workpiece comprises an upper cover, a lower cover, a cylinder, and reinforcing ribs, the reinforcing ribs are fixed between the upper cover and the lower cover, and the cylinder is a thin-walled sheet that is flattened and riveted around the reinforcing ribs.
[0010] Preferably, the backpack mechanism is a double ring connected, a connecting rod is installed on the backpack mounting seat, and the double ring is fixed on the connecting rod.
[0011] Preferably, the upper cover and the upper positioning block are positioned by pins and connected by mounting screws.
[0012] A large-diameter thin-wall adjustable riveting method, the operation steps are as follows:
[0013] 1) Preparation: Install the positioning seat on the base and the gantry frame, place the pallet on the positioning seat, place the upper cover, lower cover and riveted workpieces of the reinforcement on the pallet, set the backpack mechanism on the workpiece, the backpack mechanism is fixed on the backpack mounting seat on the frame, install the adjustment mechanism on the riveted workpiece, the adjustment mechanism is placed on the gantry frame through the shelf, the riveted workpiece and the adjustment mechanism are fixed with screws, adjust the positioning seat, adjust the parallel limit block, angle limit block, coaxiality adjustment block, baffle and screw handwheel adjustment mechanism of the adjustment mechanism, adjust the parallelism and coaxiality of the upper cover and lower cover of the workpiece, and ensure the requirements of dimensional tolerance, position and distance;
[0014] 2) Riveting work: Position the upper cover and lower cover of the riveted workpiece, fix the reinforcing ribs between the upper cover and the lower cover, remove the positioning seat under the riveted workpiece, and loosen the backpack mechanism on the riveted workpiece. The cylinder is a thin-walled sheet of aluminum alloy rolled into a large-diameter circle and flattened around the reinforcing ribs. Rivet with the reserved rivet holes. After the riveting is completed, take out the large-diameter, thin-walled precision workpiece.
[0015] The advantages and positive effects of the present invention are:
[0016] 1. The large-diameter, thin-walled, adjustable riveting tool of the present invention adopts a base and a positioning seat to install the riveted workpiece, a backpack mechanism is mounted on the riveted workpiece and fixed by the backpack mounting seat, and an adjustment mechanism is installed on the riveted workpiece. The large-diameter, thin-walled riveted workpiece is adjusted in all directions through the parallel limit block, angle limit block, coaxiality adjustment block, and screw handwheel adjustment mechanism of the adjustment mechanism, and the coaxiality and parallelism of the upper cover and the lower cover are ensured in size, thereby improving the processability of the riveting tool and ensuring quality, and the tool is suitable for batch processing and production.
[0017] 2. The large-diameter, thin-walled, adjustable riveting tool of the present invention adopts a gantry frame and an adjustment mechanism frame fixed on a base and a positioning seat, and fixes the large-diameter, thin-walled riveted workpiece through the upper and lower double rings of a backpack mounting seat and a backpack mechanism, thereby ensuring the precision size and quality stability of the riveted workpiece.
[0018] 3. The large-diameter, thin-walled, adjustable riveting tool of the present invention adopts an adjustment mechanism installed on the riveted workpiece, and the adjustment mechanism is installed on the adjustment mechanism frame. The movable block in the bracket groove of the parallel limit block can be adjusted up and down, the upper end of the parallel limit block is pressed against the gantry frame, the angle limit block can adjust the angle and the upper end is pressed against the baffle plate, the coaxiality adjustment block, baffle plate and screw handwheel adjustment mechanism respectively installed in the center of the positioning plate realize the coaxiality adjustment of the riveted workpiece and ensure the stability of the riveting process. The thin-walled sheet of the cylinder on the riveting tool is flattened and riveted around the reinforcing ribs, which is convenient and compact. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of a large-diameter, thin-walled, adjustable riveting tooling;
[0020] Figure 2 It is a schematic diagram of the positioning seat and gantry frame structure of a large-diameter, thin-walled, adjustable riveting tool;
[0021] Figure 3 It is a schematic diagram of the structure of the adjustment mechanism of a large-diameter, thin-walled, adjustable riveting tool;
[0022] Figure 4 The present invention is a schematic diagram of the structure of a large-diameter, thin-wall riveted workpiece of a large-diameter, thin-wall adjustable riveting tool.
[0023] 1-base, 2-gantry frame, 3-positioning seat, 4-tray, 5-backpack mounting seat, 6-backpack mechanism, 7-adjustment mechanism, 8-adjustment mechanism frame, 9-shelf, 10-screw handwheel adjustment mechanism, 11-upper positioning plate, 12-riveted workpiece, 13-upper cover, 14-lower cover, 15-cylinder, 16-reinforcement rib, 17 baffle, 18-coaxiality adjustment block, 19-angle limit block, 20-parallel limit block. DETAILED DESCRIPTION
[0024] In order to better understand the present invention, the present invention is further described below in conjunction with specific embodiments.
[0025] See also Figure 1 , 2 , 3, 4, the present invention provides a large-diameter, thin-walled, adjustable riveting tool. The tool frame base 1 and the gantry frame 2 are made of steel profiles, and the gantry frame 2 is fixedly mounted on the base 1; a positioning seat 3 is installed in the base 1, the positioning seat 3 is circular and its diameter corresponds to the large diameter of the riveted workpiece 12, a tray 4 is installed on the positioning seat 3, and the riveted workpiece 12 is installed on the tray 4, and the riveted workpiece 12 is in the shape of a cylinder 15. A backpack mechanism 6 is mounted on the riveted workpiece 12, and an adjustment mechanism 7 is installed on the riveted workpiece 12. The backpack mechanism 6 is an upper and lower double ring that is connected, and the double rings cover the cylinder 15 of the riveted workpiece 12. A backpack mounting seat 5 is installed on the inner side of the gantry frame 2, and a connecting rod is installed on the backpack mounting seat 5. The double rings are fixed on the connecting rod, and the backpack mechanism 6 is fixed on the backpack mounting seat 5;
[0026] An adjustment mechanism skeleton 8 is arranged on the top of the gantry skeleton 2, a top plate is installed on the adjustment mechanism skeleton 8, and the upper end of the adjustment mechanism 7 is installed on the adjustment mechanism skeleton 8; the adjustment mechanism 7 is composed of a parallel limit block 20, an angle limit block 19, a coaxiality adjustment block 18, a baffle 17, and a screw handwheel adjustment mechanism 10 installed on an upper positioning plate 11. The upper positioning plate 11 is a hub type, and parallel limit blocks 20 are evenly installed on the outer circle thereof, and angle limit blocks 19 are evenly installed on the inner circle thereof. The parallel limit block 20 is made of a moving block arranged in a bracket groove. The moving block moves in the bracket groove to adjust the opening degree of the upper cover 13 and the lower cover 14. The lower end of the moving block is fixed on the upper positioning plate 11. The upper end of the bracket groove of the parallel limit block 20 is pushed against the gantry frame 2. The angle limit block 19 can be set in a U-shaped block and hinged. The upper end of the U-shaped block of the angle limit block 19 is pushed against the baffle 17. The angle of the riveted workpiece 12 is adjusted by rotating the angle of the U-shaped block on the limit block.
[0027] The baffle plate 17, the coaxiality adjustment block 18 and the screw handwheel adjustment mechanism 10 are respectively installed at the center of the upper positioning plate 11 and are mounted on the adjustment mechanism frame 8. The coaxiality adjustment block 18 is mounted on the screw handwheel adjustment mechanism 10 and locked by a locking screw. The screw handwheel adjustment mechanism 10 includes a screw handwheel and a shelf 9. The shelf 9 is placed on the gantry frame 2, so that the adjustment mechanism 7 is placed on the gantry frame 2 through the shelf 9.
[0028] The large-diameter thin-walled adjustable riveting method has the following operating steps: preparation work: using riveting tooling to process the riveting of the large-diameter thin-walled cylinder 15, installing the positioning seat 3 on the base 1 and the gantry frame 2, placing the tray 4 on the positioning seat 3, placing the riveted workpiece 12 of the upper cover 13, the lower cover 14 and the reinforcing rib 16 on the tray 4, the backpack mechanism 6 and the backpack mounting seat 5 to fasten the riveted workpiece 12, installing the adjustment mechanism 7 on the riveted workpiece 12, the adjustment mechanism 7 is placed on the gantry frame 2 through the shelf 9, the riveted workpiece 12 and the adjustment mechanism 7 are fixedly connected by screws, the upper cover 13 and the upper positioning block 11 are positioned by pins and installed with screws; adjusting the positioning seat 3, adjusting Adjust the parallel limit block 20, angle limit block 19, coaxiality adjustment block 18, baffle 17, and screw handwheel adjustment mechanism 10, adjust the parallelism and coaxiality of the upper cover 13 and the lower cover 14 of the workpiece, and ensure the requirements of dimensional tolerance, position and distance; Riveting work: locate the upper cover 13 and the lower cover 14 of the riveted workpiece 12, fix the reinforcing rib 16 between the upper cover 13 and the lower cover 14, remove the positioning seat 3 under the riveted workpiece 12, and loosen the backpack mechanism 6 on the riveted workpiece. The cylinder 15 is a thin-walled sheet of aluminum alloy rolled into a large-diameter circle around the reinforcing rib 16 and riveted with the reserved rivet holes. After the riveting is completed, the large-diameter thin-walled precision workpiece is taken out.
[0029] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.
Claims
1. A large-diameter, thin-walled, adjustable riveting tool, comprising a base, characterized in that: A gantry frame is fixedly mounted on the base, a positioning seat is installed in the base, a tray is arranged on the positioning seat, a riveted workpiece is mounted on the tray, the riveted workpiece is in a cylindrical shape, a backpack mechanism is mounted on the riveted workpiece, an adjusting mechanism is installed on the riveted workpiece, and the riveted workpiece is fixedly connected to the adjusting mechanism; Wherein, a backpack mounting seat is installed inside the gantry frame, the backpack mechanism is fixed on the backpack mounting seat, an adjustment mechanism frame is arranged on the top of the gantry frame, and the adjustment mechanism is installed on the adjustment mechanism frame; The adjustment mechanism includes a parallel limit block, an angle limit block, a coaxial adjustment block, a baffle plate, and a screw handwheel adjustment mechanism installed on the upper positioning plate. The upper positioning plate is a hub type on which parallel limit blocks and angle limit blocks are evenly installed. The parallel limit block is a moving block arranged in the bracket groove and fixedly mounted on the upper positioning plate. The upper end of the parallel limit block is pressed against the gantry frame, and the upper end of the angle limit block is pressed against the baffle plate. The baffle plate, coaxiality adjustment block and screw handwheel adjustment mechanism are respectively installed at the center of the upper positioning plate and are mounted on the adjustment mechanism frame. The coaxiality adjustment block is mounted on the screw handwheel adjustment mechanism and locked by a locking screw; the screw handwheel adjustment mechanism includes a screw handwheel and a shelf, and the adjustment mechanism is placed on the gantry frame through the shelf.
2. A large-diameter, thin-walled, adjustable riveting tool according to claim 1, characterized in that: The riveted workpiece comprises an upper cover, a lower cover, a cylinder, and reinforcing ribs. The reinforcing ribs are fixed between the upper cover and the lower cover, and the cylinder is a thin-walled sheet that is flattened and riveted around the reinforcing ribs.
3. The large-diameter, thin-walled, adjustable riveting tool according to claim 1, characterized in that: The backpack mechanism is a double ring connected to each other, a connecting rod is installed on the backpack mounting seat, and the double ring is fixed on the connecting rod.
4. The large-diameter, thin-walled, adjustable riveting tool according to claim 1, characterized in that: The upper cover and the upper positioning block are positioned by pins and connected by screws.
5. A large diameter thin wall adjustable riveting method, the operation steps are as follows: 1) Preparation: Install the positioning seat on the base and the gantry frame, place the pallet on the positioning seat, place the upper cover, lower cover and riveted workpieces of the reinforcement on the pallet, set the backpack mechanism on the workpiece, the backpack mechanism is fixed on the backpack mounting seat on the frame, install the adjustment mechanism on the riveted workpiece, the adjustment mechanism is placed on the gantry frame through the shelf, the riveted workpiece and the adjustment mechanism are fixed with screws, adjust the positioning seat, adjust the parallel limit block, angle limit block, coaxiality adjustment block, baffle and screw handwheel adjustment mechanism of the adjustment mechanism, adjust the parallelism and coaxiality of the upper cover and lower cover of the workpiece, and ensure the requirements of dimensional tolerance, position and distance; 2) Riveting work: Position the upper cover and lower cover of the riveted workpiece, fix the reinforcing ribs between the upper cover and the lower cover, remove the positioning seat under the riveted workpiece, and loosen the backpack mechanism on the riveted workpiece. The cylinder is a thin-walled sheet of aluminum alloy rolled into a large-diameter circle and flattened around the reinforcing ribs. Rivet with the reserved rivet holes. After the riveting is completed, take out the large-diameter, thin-walled precision workpiece.