Self-positioning labor-saving punching and riveting tool for concave structure
By designing self-positioning and labor-saving riveting tooling for concave structures, the problem of difficulty in positioning and operation of the riveting parts of the concave structures in mechanical assembly is solved, and the accuracy and labor-saving of the riveting are achieved, ensuring the quality of the riveting stability.
Patent Information
- Application Number
- CN202421160313.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-24
AI Technical Summary
During mechanical assembly, the riveting parts between the nut and the shaft are often in the concave structure, which makes it difficult to tilt the rivet head, difficult to knock, difficult to ensure the quality of the riveting, and laborious.
A self-positioning and labor-saving riveting tool for concave structures is designed, including positioning tooling. The positioning tooling is cylindrical, with a circular groove open at the bottom, and a through groove is penetrated in the inner axial direction, and a sliding connection is made in the through groove. The punch has a slope that is opened at the bottom of the punch. By positioning the circular groove of the tooling and the nut skirt, combined with the design of the through groove and punch, the self-positioning and labor-saving of the punching rivet are achieved.
The precision and labor-saving punching of the concave structure are achieved, ensuring the stability of the quality of the punching rivet and avoiding the problem of difficult to achieve the punching angle.
Smart Images
Figure CN222450000U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical assembly, in particular to a self-positioning, labor-saving punching and riveting tool for an inner concave structure. Background Art
[0002] In the mechanical assembly process, the nut / shaft assembly process uses a locking riveting mechanism. The specific riveting part is affected by other mechanisms and is in a concave position, making it difficult to position. During the riveting operation, personnel often use a conical rivet head to align with the riveting part, tilt the rivet head, and use a copper hammer to hit the tail of the rivet head. Through the transmission of force, the rivet head impacts the skirt of the nut, and the skirt is deformed and recessed into the machined inclined groove reserved for the shaft, thereby locking the nut and the shaft to prevent the nut from loosening during the rotation / vibration of the shaft (as shown in the attached figure of the specification). Figure 1 , Figure 2 as shown).
[0003] At present, in some specific assembly environments, the punching and riveting parts are often in a concave structural environment. It is difficult for the punch to tilt to achieve the required punching and riveting angle, and it is also difficult for personnel to perform the knocking operation, making the punching and riveting operation difficult to achieve, the punching and riveting quality difficult to ensure, and it is relatively laborious. Therefore, a self-positioning and labor-saving punching and riveting tool for concave structures is needed to solve the above technical problems. Utility Model Content
[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a self-positioning and labor-saving punching and riveting tool for an inner concave structure.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-positioning and labor-saving punching and riveting tool for a concave structure, including a positioning tool, the positioning tool is cylindrical, and a circular groove is provided at the bottom end of the positioning tool, a through groove is axially penetrated inside the positioning tool, a punch is slidably connected to the inside of the through groove, and an inclined surface is provided at the bottom end of the punch.
[0006] Preferably, an open groove is axially penetrated through one side of the positioning tool.
[0007] Preferably, a clamping mechanism is provided inside the positioning tool, and the clamping mechanism includes screw holes opened on both sides of the top of the positioning tool, bolts are inserted into the screw holes, bottom ends of the screw holes are opened with bottom grooves, arc grooves are opened on both sides of the circular groove, and the arc grooves are connected with the bottom grooves, arc clamping blocks are provided in the arc grooves, and a hinged top plate is provided in the bottom groove, and the bolts can push the hinged top plate to move downward, and both sides of the bottom end of the hinged top plate are hinged with hinged side plates.
[0008] Preferably, a notch is provided on one side of the two arc-shaped clamping blocks that are close to each other at the top ends, and an elastic pull rope is provided in the notch.
[0009] Preferably, two elastic pull ropes are fixedly connected to both sides of the hinged top plate, and the other ends of the two elastic pull ropes are fixedly connected to the side surfaces of the bottom groove.
[0010] Preferably, an auxiliary groove is formed on one side of the punch near the opening groove, an auxiliary block is fixedly connected to the top end of the through groove near the opening groove, and the auxiliary block is in the auxiliary groove.
[0011] Preferably, rollers are installed at the bottom ends of the hinged side panels, and the bottoms of the rollers are in contact with the bottom ends of the bottom grooves.
[0012] Beneficial effects:
[0013] Compared with the prior art, the self-positioning and labor-saving punching and riveting tool for the concave structure has the following beneficial effects:
[0014] 1. The utility model positions the nut by placing the circular groove under the positioning tool close to the nut skirt, and rotating the positioning tool so that the open groove is aligned with the punching and riveting part on one side. Because the product is 180 degrees opposite to the punching and riveting, the punching and riveting part on the other side is aligned with the punching and riveting hole. The punch is passed through the punching and riveting hole, and the tail of the punching and riveting head is knocked two to three times in a straight line. The positioning tool is removed, and the punching and riveting are completed. The directional through groove of the positioning tool cooperates with the punch to guide the punch. The open groove on the positioning tool realizes the positioning of the punching and riveting position in the circumferential direction of the double punching and riveting structure. The bevel passivation structure at the bottom of the punch realizes the deformation of the punching and riveting skirt to prevent bursting. The punch and the positioning tool are used in coordination to realize the change of the direction of the radial force, the change of the knocking direction, and the achievement of the punching and riveting angle, thereby realizing the precision and labor saving of the punching and riveting of the concave structure.
[0015] 2. The utility model aligns the punching and riveting part on one side through the open groove. At this time, two bolts are screwed into the screw holes and continue to be screwed downward, so that the bolts press the hinged top plate downward, and the hinged top plate presses the two hinged side plates. The bottom ends of the two hinged side plates are opened to the side away from each other, and the hinged side plate close to the side of the arc-shaped clamping block presses the arc-shaped clamping block, so that the arc-shaped clamping block clamps and squeezes the nut, which is beneficial to ensure the stability of the positioning tooling when striking the punch, and avoid the positioning tooling from rotating due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a top view of the nut when it is installed on the shaft;
[0017] Figure 2 is a schematic diagram of the cross-sectional structure of the nut when it is installed on the rotating shaft;
[0018] Figure 3 It is a structural schematic diagram of using the positioning tool of the utility model to punch and rivet the skirt of a nut;
[0019] Figure 4 It is a three-dimensional structural schematic diagram of the positioning tooling of the utility model;
[0020] Figure 5 This is a structural schematic diagram of a second implementation mode of the positioning tool of the utility model;
[0021] Figure 6 for Figure 5 A cross-sectional view of
[0022] Figure 7 It is a three-dimensional view from another perspective of the second embodiment of the positioning tool of the utility model;
[0023] Figure 8 is a structural schematic diagram of the clamping mechanism;
[0024] Fig. 9 for Figure 6 A partial enlarged view of point A in the middle.
[0025] In the figure: 1. positioning tool; 2. circular groove; 3. open groove; 4. through groove; 5. punch; 6. clamping mechanism; 61. screw hole; 62. bottom groove; 63. arc groove; 64. arc clamping block; 65. hinged top plate; 66. hinged side plate; 7. notch; 8. elastic pull rope 1; 9. elastic pull rope 2; 10. auxiliary groove; 11. auxiliary block; 12. roller; 13. rotating shaft; 14. gear; 15. nut; 16. inclined groove. DETAILED DESCRIPTION
[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0027] like Figure 1 , Figure 2 As shown, a self-positioning and labor-saving punching and riveting tool for a concave structure is shown. In the prior art, after the gear 14 is installed on the rotating shaft 13, the shaft end of the rotating shaft 13 is locked by the nut 15. However, in order to prevent the nut from loosening due to vibration during rotation, bevel grooves 16 are processed on both sides of the shaft end surface of the rotating shaft 13. The angle between the two bevel grooves 16 is 180 degrees. By using a conical punching and riveting head to align with the punching and riveting part, the rivet head is tilted, and a copper hammer is used to strike the tail of the punching and rivet head. Through the transmission of force, the punching and rivet head impacts the skirt of the nut, and the skirt is deformed and recessed into the bevel groove 16 on the end surface of the rotating shaft 13, thereby locking the nut 15 and the rotating shaft 13 and preventing the nut from loosening during the rotation of the rotating shaft.
[0028] like Figure 3 , Figure 4As shown, the utility model proposes a self-positioning and labor-saving punching and riveting tool for a concave structure, including a positioning tool 1. The positioning tool 1 is cylindrical, and a circular groove 2 is provided at the bottom end of the positioning tool 1. The circular groove 2 cooperates with the skirt of the nut 15 and the circular concave hole in the gear 14 to achieve the positioning of the tool. A through groove 4 is axially penetrated inside the positioning tool 1, and a punch 5 is slidably connected inside the through groove 4. The through groove 4 is used to guide the punch 5. An inclined surface is provided at the bottom end of the punch 5, and the end of the inclined surface at the lower end of the punch 5 is passivated to prevent the nut skirt from being broken. An open groove 3 is axially penetrated on one side of the positioning tool 1, and the connecting line between the open groove 3 and the through groove 4 passes through the central axis of the positioning tool 1, ensuring that the open groove 3 and the through groove 4 are located at the positions of the two inclined grooves 16 after the positioning tool is positioned. During operation, the circular groove 2 under the positioning tool 1 is pressed against the skirt of the nut for positioning, and the positioning tool 1 is rotated and observed from the opening slot 3 so that the opening slot 3 is aligned with the riveting position on one side, that is, when the opening slot 3 is aligned with one of the inclined slots 16, the through slot 4 is facing the other inclined slot 16, and then the top of the punch 5 is hammered to achieve the transformation of the radial force, so that the lower end of the punch 5 is inclined to apply pressure to the skirt of the nut 15 to press it into the inclined slot 16, thereby achieving riveting. If both inclined slots 16 need to be riveted, the same method is used, and the opening slot 3 is observed to make the opening slot 3 face one of the riveted inclined slots 16, and the through slot 4 is facing one of the unriveted inclined slots 16, so that the end is riveted again. The positioning of the riveting position of the double riveting structure is achieved.
[0029] Second implementation method:
[0030] like Figures 5 to 9 As shown, an auxiliary groove 10 is provided on one side of the punch 5 close to the opening groove 3, and an auxiliary block 11 is fixedly connected to the top of the through groove 4 close to the opening groove 3, and the auxiliary block 11 is located in the auxiliary groove 10, and the two are adapted and slidably connected. The design of the auxiliary block 11 and the auxiliary groove 10 is convenient for reminding the staff that the inclined surface at the bottom end of the punch 5 is located on the side of the opening groove 3 during operation to prevent incorrect placement, which cannot be inserted if it is placed incorrectly.
[0031] The interior of the positioning tool 1 is provided with a clamping mechanism 6, which includes screw holes 61 opened on both sides of the top of the positioning tool 1, and bottom grooves 62 are opened at the bottom ends of the screw holes 61, arc grooves 63 are opened on both sides of the circular groove 2, and the arc grooves 63 are connected to the bottom grooves 62, and arc clamping blocks 64 are arranged in the arc grooves 63. Notches 7 are opened on the sides close to the tops of the two arc clamping blocks 64, and elastic pull ropes 8 are arranged in the notches 7. The notches 7 are used to accommodate the elastic pull ropes 8, and the two ends of the elastic pull ropes 8 are respectively connected to the fixed walls of the arc clamping blocks 64 and the arc grooves 63, so that the arc clamping blocks 64 can be pulled back to their original positions by relying on the resilience of the elastic pull ropes 8 after they move.
[0032] A hinged top plate 65 is provided in the bottom groove 62. Both sides of the hinged top plate 65 are fixedly connected with elastic pull ropes 29, and the other ends of the elastic pull ropes 29 are fixedly connected with the side surfaces of the bottom groove 62. The design of the elastic pull ropes 29 allows the hinged top plate 65 to be reset by the elastic force of the elastic pull ropes 29 when the bolts are loosened after being pressed down, so that it can be restored to its original position in time when the bolts are moved up and loosened. Both sides of the bottom end of the hinged top plate 65 are hinged with hinged side plates 66. The bottom ends of the hinged side plates 66 are installed with rollers 12, and the bottoms of the rollers 12 are in contact with the bottom ends of the bottom grooves 62. The design of the rollers 12 greatly reduces the friction between the hinged side plates 66 and the bottom grooves 62.
[0033] During operation, the riveting part on one side is aligned through the open groove 3. At this time, two bolts are screwed into the screw holes 61 until they contact the hinged top plate 65, and then continue to be screwed downward, so that the bolts squeeze the hinged top plate 65 downward, and the hinged top plate 65 squeezes the two hinged side plates 66. The bottom ends of the two hinged side plates 66 open to the side away from each other, and the hinged side plate 66 close to the side of the arc clamping block 64 squeezes the arc clamping block 64, so that the arc clamping block 64 clamps and squeezes the nut, which is beneficial to ensure the stability of the positioning tool 1 when striking the punch 5, and avoid the positioning tool 1 from rotating due to vibration.
[0034] 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 in the protection scope of the present invention.
Claims
1. A self-positioning and labor-saving punching and riveting tool for a concave structure, comprising a positioning tool (1), characterized in that: The positioning tool (1) is cylindrical, and a circular groove (2) is provided at the bottom end of the positioning tool (1). A through groove (4) axially penetrates the interior of the positioning tool (1), a punch (5) is slidably connected to the interior of the through groove (4), and a bevel is provided at the bottom end of the punch (5).
2. The self-positioning and labor-saving punching and riveting tool for a concave structure according to claim 1, characterized in that: An open groove (3) is axially penetrated through one side of the positioning tool (1).
3. The self-positioning and labor-saving punching and riveting tool for a concave structure according to claim 1, characterized in that: A clamping mechanism (6) is provided inside the positioning tool (1), and the clamping mechanism (6) includes screw holes (61) provided on both sides of the top of the positioning tool (1), bolts are inserted into the screw holes (61), bottom ends of the screw holes (61) are provided with bottom grooves (62), arc grooves (63) are provided on both sides of the circular groove (2), and the arc grooves (63) are connected to the bottom groove (62), arc clamping blocks (64) are provided in the arc grooves (63), and a hinged top plate (65) is provided in the bottom groove (62), and when the bolts move downward, the hinged top plate (65) can be pushed downward, and both sides of the bottom end of the hinged top plate (65) are hinged with hinged side plates (66).
4. The self-positioning and labor-saving punching and riveting tool for a concave structure according to claim 3, characterized in that: A notch (7) is provided on one side of the two arc-shaped clamping blocks (64) adjacent to each other at the top ends, and an elastic pull rope (8) is provided in the notch (7).
5. The self-positioning and labor-saving punching and riveting tool for a concave structure according to claim 3, characterized in that: Elastic pull ropes 2 (9) are fixedly connected to both sides of the hinged top plate (65), and the other ends of the elastic pull ropes 2 (9) are fixedly connected to the side surfaces of the bottom groove (62).
6. The self-positioning and labor-saving punching and riveting tool for a concave structure according to claim 1, characterized in that: An auxiliary groove (10) is provided on one side of the punch (5) close to the opening groove (3), and an auxiliary block (11) is fixedly connected to the top end of the through groove (4) close to the opening groove (3), and the auxiliary block (11) is located in the auxiliary groove (10).
7. The self-positioning and labor-saving punching and riveting tool for a concave structure according to claim 3, characterized in that: The bottom ends of the hinged side plates (66) are all equipped with rollers (12), and the bottoms of the rollers (12) are in contact with the bottom ends of the bottom grooves (62).