A rotary high-efficiency riveting device

Abstract

The utility model discloses a rotary high-efficiency riveting device, including a connecting rod, a connecting bolt and a rotary bearing, one end of the connecting rod is provided with a connecting screw hole, the screw of the connecting bolt passes through the central through hole of the inner ring of the rotary bearing and is connected with the connecting screw hole, the rotary bearing is located between the nut of the connecting bolt and the connecting rod, the inner ring of the rotary bearing and the connecting bolt cannot rotate relative to each other, and the outer ring of the rotary bearing can rotate freely. The utility model designs the connecting rod, the connecting bolt and the rotary bearing to be connected to each other, so that the inner ring of the rotary bearing is fixedly connected with the connecting bolt and the connecting rod, and the outer end of the rotary bearing can rotate freely. When in use, the connecting rod is connected to the tool holder of the machine tool or the tool rod of the machine tool is directly used as the connecting rod, and the workpiece to be riveted is installed on the clamping chuck of the machine tool, and the rotary riveting function of medium and large products is realized by using a conventional machine tool, and there is no need to purchase a hemming machine, which reduces the cost, improves the efficiency, and improves the riveting quality.

Description

Technical Field

[0001] The utility model relates to a riveting device for riveting medium and large parts, in particular to a rotary high-efficiency riveting device. Background Art

[0002] Flanging riveting is a common process in the product production process. Its function is to flange the riveted parts (such as riveted tubes or riveted plates, etc.) at the end of the product to achieve a reliable connection. For small products, the riveted parts are generally riveted tubes, and the flanging process is generally completed by expansion and pressure, that is, by applying pressure to the riveting head, the end of the riveted tube is first expanded and then flanged to form a riveted part; for medium and large products, the riveted parts are generally riveted plates, and the circumferential edge of the riveted plate needs to be flanged 90° to rivet the circular end of the product.

[0003] For the riveting process of medium and large products, the traditional method is generally completed through a rolling machine, which has the following defects: the rolling machine is expensive, and when encountering small batches or test pieces, the cost of purchasing a rolling machine is high and the cycle is long. At the same time, the flanging mold matched with the rolling machine has a single forming direction and cannot realize the rotation function. Multiple flanging molds are required to complete 90° riveting, which is costly, inefficient, and the flanging effect is not guaranteed.

[0004] At present, almost all enterprises have machine tools as machining equipment, and the machine tool itself has mutually coordinated tool holders (also called tool magazines), cutting tools (such as drills, milling cutters, chippers, etc., including tool rods and tool heads), clamping chucks (such as three-jaw chucks, five-jaw chucks, etc.) and other parts. The tool holder, cutting tools and clamping chucks can rotate and move independently to realize various forms of machining functions. If these built-in functions of the machine tool can be used to realize the riveting function of medium and large products, it can reduce costs, improve efficiency and improve the quality of riveting. Utility Model Content

[0005] The purpose of the utility model is to provide a rotary high-efficiency riveting device capable of completing the riveting function by using a machine tool in order to solve the above-mentioned problem.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A rotary high-efficiency riveting device comprises a connecting rod, a connecting bolt and a rotary bearing, wherein one end of the connecting rod is provided with a connecting screw hole, the screw of the connecting bolt passes through the central through hole of the inner ring of the rotary bearing and is connected to the connecting screw hole, the rotary bearing is located between the nut of the connecting bolt and the connecting rod, the inner ring of the rotary bearing and the connecting bolt cannot rotate relative to each other, and the outer ring of the rotary bearing can rotate freely.

[0008] Preferably, in order to improve the connection reliability between the inner ring of the rotating bearing and the connecting bolt and the connecting rod respectively, a washer is provided between one end of the rotating bearing and the nut of the connecting bolt, and the screw of the connecting bolt passes through the central through hole of the washer; a clamping ring is provided between the other end of the rotating bearing and the connecting rod, and the screw of the connecting bolt passes through the central through hole of the clamping ring; the washer and the clamping ring are respectively in tight contact with the two ends of the inner ring of the rotating bearing.

[0009] Preferably, in order to facilitate the use in conjunction with a tool holder and a clamping chuck of a machine tool, the axial direction of the connecting screw hole is perpendicular to the axial direction of the connecting rod.

[0010] Preferably, in order to facilitate the application with the machine tool, the connecting rod is a tool rod connected to the tool holder on the machine tool, or the connecting rod is an independent rod body connected to the tool holder on the machine tool.

[0011] The beneficial effects of the utility model are:

[0012] The utility model designs interconnected connecting rods, connecting bolts and rotating bearings, so that the inner ring of the rotating bearing is fixedly connected with the connecting bolts and the connecting rod, and the outer end of the rotating bearing can rotate freely. When in use, the connecting rod is connected to the tool holder of the machine tool or the tool rod of the machine tool is directly used as the connecting rod, and the workpiece to be riveted is mounted on the clamping chuck of the machine tool. The tool holder and the clamping chuck can rotate and move independently. The position and angle between the rotating bearing and the workpiece are adjusted, and the outer ring of the bearing can be pressed on the edge of the riveted plate of the workpiece to be bent by adjusting the angle of the tool holder relative to the workpiece. The purpose of bending the entire circumferential edge of the riveted plate can be achieved by controlling the clamping chuck to drive the workpiece to rotate. The angle of the tool holder relative to the workpiece is adjusted multiple times until the entire circumferential edge of the riveted plate is bent by 90°, and the entire riveting process of the workpiece is completed, thereby using conventional machine tools to realize the rotary riveting function of medium and large products, without the need to purchase a hemming machine, reducing costs, improving efficiency, and improving riveting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main structure of the rotary high-efficiency riveting device of the utility model;

[0014] Figure 2 This is a schematic diagram of the main cross-sectional structure of the rotary high-efficiency riveting device of the utility model;

[0015] Figure 3 This is one of the main structural schematic diagrams of the rotary high-efficiency riveting device of the utility model when it is used;

[0016] Figure 4 This is the second main structural schematic diagram of the rotary high-efficiency riveting device of the utility model when it is used;

[0017] Figure 5 This is the third main structural diagram of the rotary high-efficiency riveting device of the utility model when it is used, in which the knife holder and part of the connecting rod are omitted;

[0018] Figure 6 This is the fourth main structural diagram of the rotary high-efficiency riveting device of the utility model when it is used, in which the knife holder and part of the connecting rod are omitted;

[0019] Figure 7 This is the fifth main structural diagram of the rotary high-efficiency riveting device of the utility model when it is used, in which the knife holder and part of the connecting rod are omitted;

[0020] Figure 8 The utility model is a schematic diagram of the main structure of a workpiece and a clamping chuck after riveting is completed by using the rotary high-efficiency riveting device of the utility model. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] like Figure 1 and Figure 2 As shown, the rotary high-efficiency riveting device of the utility model includes a connecting rod 1, a connecting bolt 2 and a rotating bearing 4. A connecting screw hole 7 is provided at one end of the connecting rod 1. The screw 6 of the connecting bolt 2 passes through the central through hole of the inner ring of the rotating bearing 4 (not separately marked in the figure) and is connected to the connecting screw hole 7. The rotating bearing 4 is located between the nut of the connecting bolt 2 (not separately marked in the figure) and the connecting rod 1. The inner ring of the rotating bearing 4 and the connecting bolt 2 cannot rotate relative to each other, and the outer ring of the rotating bearing 4 (not separately marked in the figure) can rotate freely.

[0023] Preferably, in order to improve the connection reliability between the inner ring of the rotating bearing 4 and the connecting bolt 2 and the connecting rod 1, a washer 3 is provided between one end of the rotating bearing 4 and the nut of the connecting bolt 2, and the screw 6 of the connecting bolt 2 passes through the central through hole of the washer 3, and a clamping ring 5 is provided between the other end of the rotating bearing 4 and the connecting rod 1, and the screw 6 of the connecting bolt 2 passes through the central through hole of the clamping ring 5, and the washer 3 and the clamping ring 5 are in close contact with the two ends of the inner ring of the rotating bearing 4 respectively; in order to facilitate the connection with the tool holder of the machine tool (reference Figure 3 and Figure 4 Tool holder 8) and clamping chuck (reference Figure 3 and Figure 4 The connecting rod 1 is used in conjunction with the clamping chuck 11), and the axial direction of the connecting screw hole 7 is perpendicular to the axial direction of the connecting rod 1; in order to facilitate the use with the machine tool, the connecting rod 1 is a tool rod connected to the tool holder 8 on the machine tool, or the connecting rod 1 is an independent rod body connected to the tool holder on the machine tool.

[0024] like Figure 3-Figure 8As shown, when used, first connect the connecting rod 1 to the tool holder 8 of the machine tool (not shown in the figure). If the connecting rod 1 is the tool rod of the machine tool, it does not need to be connected. Instead, the cutter head on the tool rod is removed, and the rotating bearing 4 is installed on the tool rod through the connecting bolt 2, the washer 3 and the clamping ring 5; then install the workpiece 10 on the clamping chuck 11 of the machine tool, so that the riveted plate 9 at one end of the workpiece 10 is close to the outer ring of the rotating bearing 4. At this time, the center line of the rotating bearing 4 and the riveted plate 9 are parallel to each other, and the outer ring of the rotating bearing 4 is in contact with the position near the edge of the riveted plate 9, as shown in FIG. Figure 3 Then the knife holder 8 is rotated by a small angle, such as 10 °, and the rotating bearing 4 is pressed against the corresponding edge position of the riveted plate 9 to bend the angle, such as Figure 4 As shown; then the workpiece 10 is rotated by the clamping chuck 11, or the clamping chuck 11 drives the workpiece 10 to rotate continuously until the entire riveting process is completed, and the outer ring of the rotating bearing 4 rolls on the riveting plate 9 of the riveting plate 9 while applying pressure to the edge of the riveting plate 9. After the riveting plate 9 rotates at least one circle (it can also rotate multiple circles to achieve a precise bending effect), the entire edge of the riveting plate 9 is bent at this angle; then the tool holder 8 is rotated by a certain angle, such as 10°, 20°, etc. The specific angle is determined according to factors such as the thickness and hardness of the riveting plate 9, and the rotating bearing 4 applies pressure to the corresponding edge position of the riveting plate 9 to bend it at this angle, as shown Figure 5 As shown in the figure (35° in the figure, plus the 10° of the first bend, the total bending angle is 45°); in the same way, after the riveted plate 9 rotates at least one circle, the entire edge of the riveted plate 9 is bent at this angle; finally, the knife seat 8 is rotated at a certain angle, and the rotating bearing 4 applies pressure to the corresponding edge position of the riveted plate 9 to bend it at this angle. At this time, the total bending angle is 90°, as shown in the figure. Figure 6 Similarly, after the riveting plate 9 rotates at least one circle, the entire edge of the riveting plate 9 is bent at this angle, such as Figure 7 Then the riveting device is removed, the whole edge of the riveting plate 9 is turned up 90° and fits tightly with the outer wall of the end of the workpiece 10, so as to achieve high-quality riveting effect, such as Figure 8 shown.

[0025] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. A rotary high-efficiency riveting device, characterized in that: It includes a connecting rod, a connecting bolt and a rotating bearing. One end of the connecting rod is provided with a connecting screw hole. The screw of the connecting bolt passes through the central through hole of the inner ring of the rotating bearing and is connected to the connecting screw hole. The rotating bearing is located between the nut of the connecting bolt and the connecting rod. The inner ring of the rotating bearing and the connecting bolt cannot rotate relative to each other, and the outer ring of the rotating bearing can rotate freely.

2. The rotary high-efficiency riveting device according to claim 1 is characterized in that: A washer is provided between one end of the rotating bearing and the nut of the connecting bolt, and the screw of the connecting bolt passes through the central through hole of the washer. A clamping ring is provided between the other end of the rotating bearing and the connecting rod, and the screw of the connecting bolt passes through the central through hole of the clamping ring. The washer and the clamping ring are in close contact with the two ends of the inner ring of the rotating bearing respectively.

3. The rotary high-efficiency riveting device according to claim 2 is characterized in that: The axial direction of the connecting screw hole is perpendicular to the axial direction of the connecting rod.

4. The rotary high-efficiency riveting device according to claim 1, 2 or 3, characterized in that: The connecting rod is a tool rod connected to the tool holder on the machine tool, or the connecting rod is an independent rod body connected to the tool holder on the machine tool.

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