Riveting device for copper heat preservation rivet in cylindrical roller bearing
By employing a riveting device with electromagnetic induction heating and high-pressure treatment in cylindrical roller bearings, the problems of low riveting efficiency and difficulty in guaranteeing quality in existing technologies have been solved, achieving efficient and stable riveting results and improving the overall performance of the bearing.
Patent Information
- Application Number
- CN202520416863.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Existing riveting structures are inefficient and difficult to guarantee in the bearing industry, affecting product qualification rates. They are also complex to operate and require high skills.
A riveting device for cylindrical roller bearings was designed, employing electromagnetic induction heating technology and high-pressure processing, combined with an adjustable beam and positioning system to ensure riveting quality and efficiency.
It improves riveting quality and efficiency, reduces operational difficulty, adapts to bearings of different specifications, reduces positioning errors, enhances the overall rigidity and stability of bearings, and reduces vibration and noise.
Smart Images
Figure CN223789490U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a riveting device for copper heat-insulating riveting in cylindrical roller bearings. Background Technology
[0002] Copper heat-insulated riveting is an important technology in the field of metal joining, especially for connecting copper materials or copper-containing components. The principle is that when copper is heated, its plasticity increases and its hardness decreases. The heated copper is deformed and inserted into a pre-set position on the mating part. Then, external force is applied using a riveting tool, causing the copper to undergo plastic deformation and form a tight connection. This technology is also applied in the bearing industry, using a split design with a lower and upper cage. The lower cage has multiple connecting pins, and the upper cage has connecting ports that interlock with the connecting pins to form a fixed combination. By placing the copper connecting parts at the connecting ports and using heat riveting to achieve a tight fit between the lower and upper cages, this method offers high strength, good stability, and excellent fatigue resistance, significantly improving the overall performance and lifespan of the bearing. However, existing stamping structures have many problems, low efficiency, and difficulty in guaranteeing riveting quality, affecting the product yield. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a riveting device for copper heat-insulating riveting in cylindrical roller bearings. It has a simple structure, reasonable layout, and ensures riveting quality while achieving a good product qualification rate.
[0004] To achieve the above objectives, this utility model provides a riveting device for copper heat-insulating riveting in cylindrical roller bearings, including a base and a beam plate. The beam plate is mounted on the base, and a pressing cylinder is provided on the beam plate. The output end of the pressing cylinder faces the base, and the output end of the pressing cylinder is connected to a copper heat-insulating riveting device. The copper heat-insulating riveting device includes a heating coil located near the pressing cylinder and several copper rivets for being installed at the connection port of the upper cage. The base is provided with a copper heat-insulating riveting device for engaging with the retaining edge of the outer ring of the bearing to be processed.
[0005] The advantages of this setup are as follows: By heating the rivet head and applying high pressure, along with the addition of riveting fixtures and a high-temperature electric tempering process, hot riveting effectively prevents cage deformation and rivet head cracking, thus ensuring product quality and offering advantages such as higher connection strength and smoother joint surfaces. Furthermore, hot riveting can deform or melt the metal joints together by increasing the temperature, achieving a strong connection. This connection method significantly improves the overall rigidity and stability of the bearing, reducing vibration and noise during operation. The copper underrunner on the base is perfectly matched to the shape of the bearing's outer ring flange, achieving precise "one-to-one" positioning. When placing the bearing, it can be quickly and accurately positioned, greatly reducing positioning time and effectively avoiding deviations that are common in traditional positioning methods. Moreover, different bearing specifications only require replacing the copper underrunner with the corresponding size, making operation convenient. When performing hot riveting, operators can simply place the bearing's outer ring flange directly on the copper underrunner to complete the positioning, eliminating the need for complex measurements and adjustments, reducing the skill requirements for operators, allowing new employees to quickly learn and reducing human positioning errors. At the same time, hot riveting is extremely efficient. The advanced heating system utilizes electromagnetic induction heating technology in the heating coil of the copper rivet, which can heat the copper rivet to the appropriate temperature in a short time, several times faster than traditional heating methods, thus shortening the heating waiting time. The pressure cylinder is directly connected to the copper rivet, and it can respond quickly after heating. With its high pressure output and rapid action characteristics, it completes riveting in a very short time, and the pressure is stable and controllable, ensuring consistent riveting quality.
[0006] As a further feature of this utility model, the four corners of the beam plate are connected to the base via connecting rods, the beam plate is sleeved on the connecting rods and slides with the connecting rods, and a control nut is threaded onto the connecting rod, the control nut abutting against the beam plate.
[0007] The advantages of this design are as follows: The beam plate is connected to the base at its four corners via connecting rods, greatly enhancing the flexibility of the entire riveting device. The beam plate is fitted onto the connecting rods and can slide along them, allowing it to move up and down. The threaded control nut on the connecting rod allows the operator to easily change the beam plate height by simply turning it when using cylindrical roller bearings of different sizes. This operation is extremely convenient, requiring no complex tools and can be completed manually. The adjustment principle is based on the lifting action of the thread. By precisely controlling the number of rotations of the nut, the beam plate height can be accurately adjusted, thereby adjusting the height of the pressure cylinder. This adjustable design ensures that the cylinder is in the optimal working position when riveting bearings of different sizes, guaranteeing the riveting effect. Regardless of the bearing size, quick adjustments ensure precise alignment of the brass rivet with the upper cage connection port, completing the riveting with the most suitable pressure and angle. This avoids problems such as insecure riveting or over-riveting caused by improper cylinder height, comprehensively improving the quality and efficiency of riveting.
[0008] As a further feature of this invention, a sleeve is provided on the beam plate, and the output end of the pressure cylinder passes through the sleeve and is riveted to the copper retainer. A sliding seat is slidably provided on the sleeve, and three swing arms are oscillatingly provided on the sliding seat. The other end of each swing arm is oscillatingly connected to a connecting arm, and the other end of each connecting arm is oscillatingly provided with a push plate for abutting against the outer peripheral wall of the copper retainer. A support arm is oscillatingly connected to the connecting arm, and the other end of the support arm is fixedly connected to the sleeve. A positioning nut is threaded onto the sleeve, and the sliding seat abuts against the positioning nut.
[0009] The advantages of this setup are as follows: The entire positioning system is controlled by the raising and lowering of the positioning nut. When the positioning nut is rotated, its engagement with the sleeve thread causes the sliding seat to move up and down. As the sliding seat rises or falls, the three swing arms connected to it begin to move, opening or closing accordingly based on the displacement of the sliding seat. At the other end of each swing arm, a connecting arm connects to a push plate, further transmitting the movement of the swing arms and causing the push plate to move accordingly. The push plate ultimately abuts against the outer circumferential wall of the copper-insulated rivet. Through the coordinated action of the three push plates, the copper-insulated rivet is centered and positioned. Operators can easily adjust the positioning of the copper-insulated rivet simply by rotating the positioning nut, without complicated procedures or specialized tools. Regarding positioning accuracy, the even distribution of the three swing arms and push plates allows for force application to the copper-insulated rivet from multiple directions, ensuring it can be accurately pushed to the center position in all directions, effectively avoiding positioning errors such as eccentricity. By adjusting the positioning nut, the positioning requirements under various working conditions can be flexibly met, greatly improving the versatility and practicality of the riveting device.
[0010] As a further feature of this invention, the push plate is arc-shaped.
[0011] The advantages of this design are as follows: the curved push plate can perfectly fit the outer peripheral wall of the copper underrunner, which is closer than that of a regular flat push plate. During positioning, the pushing force on the copper underrunner is more uniform in all directions, avoiding positional deviation caused by uneven force, greatly improving positioning stability. Furthermore, the uniform force distribution helps reduce damage to the surface of the copper underrunner, ensuring that its surface quality is not affected. When the push plate abuts against the outer peripheral wall of the copper underrunner, it can apply precise and stable force to the copper underrunner from multiple directions, ensuring that it can be accurately pushed to the center position in all directions, effectively avoiding positioning errors such as eccentricity.
[0012] As a further feature of this invention, the bottom surface of the base is provided with anti-slip strips.
[0013] The beneficial effects of this design are as follows: During the riveting process, the equipment will generate a certain amount of vibration and shaking. If the base is unstable, it is very likely to cause deviations in the entire riveting process. The presence of anti-slip strips effectively increases the friction between the base and the placement surface, ensuring the stability of the base position even under high-frequency vibration, and preventing displacement from affecting the riveting accuracy. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model without the sleeve and sliding seat installed;
[0015] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Detailed Implementation
[0016] This utility model provides an embodiment of a riveting device for copper heat-insulating riveting in cylindrical roller bearings, such as... Figures 1 to 2As shown, the bearing includes a base 1 and a beam plate 2, with the beam plate 2 mounted on the base 1. A pressure cylinder 3 is mounted on the beam plate 2, with its output end facing the base 1. The output end of the pressure cylinder 3 is connected to a copper upper riveting 4, which includes a heating coil near the pressure cylinder 3 and several copper rivets for mounting at the upper cage connection port. The base 1 has a copper lower riveting 4 for engaging with the outer ring flange of the bearing to be processed. The advantages of this configuration are: by heating the rivet head and applying high pressure, along with the addition of riveting fixtures and an electric heating high-temperature tempering process, this hot riveting technology effectively prevents cage deformation and rivet head cracking, thus ensuring product quality. It also offers advantages such as higher connection strength and smoother connecting surfaces. Furthermore, the hot riveting process can deform or melt the metal connection parts together by increasing the temperature, achieving a strong connection. This connection method can significantly improve the overall rigidity and stability of the bearing, reducing vibration and noise generated during operation. Furthermore, the copper rivet on base 1 is perfectly matched to the shape and height of the outer ring flange of the bearing to be processed, achieving precise "one-to-one" positioning. When placing the bearing, it can be positioned quickly and accurately, greatly reducing positioning time and effectively avoiding deviations that are prone to occur in traditional positioning. Moreover, for bearings of different specifications, only the corresponding size copper rivet needs to be replaced, making operation convenient. When performing hot riveting, operators can simply place the bearing outer ring flange directly on the copper rivet to complete the positioning, without the need for complex measurements and adjustments, reducing the skill requirements for operators. New employees can quickly get started, reducing human positioning errors. At the same time, the hot riveting process is extremely efficient. The advanced heating system uses electromagnetic induction heating technology in the heating coil of the copper rivet 4, which can heat the copper rivet to the appropriate temperature in a short time, several times faster than traditional heating methods, shortening the heating waiting time. The pressure cylinder 3 is directly connected to the copper rivet 4, and can respond quickly after heating. With its high pressure output and rapid action characteristics, it completes riveting in a very short time, and the pressure is stable and controllable, ensuring consistent riveting quality.
[0017] As a further feature of this invention, the four corners of the beam plate 2 are connected to the base 1 via connecting rods 21. The beam plate 2 is fitted onto the connecting rods 21 and slides with them. A control nut 22 is threaded onto the connecting rods 21, and the control nut 22 abuts against the beam plate 2. The advantages of this design are: the connection of the four corners of the beam plate 2 to the base 1 via the connecting rods 21 greatly enhances the flexibility of the entire riveting device. The beam plate 2, fitted onto the connecting rods 21 and sliding with them, allows it to move up and down along the connecting rods 21. The control nut 22 threaded onto the connecting rods 21 allows the operator to easily change the height of the beam plate 2 by simply rotating it when using cylindrical roller bearings of different specifications. This operation is extremely convenient, requiring no complex tools and can be completed manually. The adjustment principle is based on the lifting action of the thread. By precisely controlling the number of rotations of the nut 22, the height of the beam plate 2 can be accurately adjusted, thereby adjusting the height of the pressing cylinder 3. This adjustable design ensures that the cylinder is in the optimal working position when riveting bearings of different specifications, guaranteeing the riveting effect. Regardless of the size of the bearing, quick adjustment can precisely align the copper rivet with the upper cage connection port, completing the riveting with the most suitable pressure and angle. This avoids problems such as weak riveting or over-riveting caused by improper cylinder height, comprehensively improving the quality and efficiency of riveting.
[0018] As a further feature of this invention, a sleeve 6 is provided on the beam plate 2. The output end of the pressure cylinder 3 passes through the sleeve 6 and is connected to the copper retainer riveting 4. A sliding seat 7 is slidably provided on the sleeve 6. Three swing arms 71 are oscillatingly provided on the sliding seat 7. The other end of each swing arm 71 is oscillatingly connected to a connecting arm 72. The other end of each connecting arm 72 is oscillatingly provided with a push plate 73 for abutting against the outer peripheral wall of the copper retainer riveting. A support arm 62 is oscillatingly connected to the connecting arm 72. The other end of the support arm 62 is fixedly connected to the sleeve 6. A positioning nut 61 is threaded onto the sleeve 6, and the sliding seat 7 abuts against the positioning nut 61. The beneficial effect of this configuration is that the operation of the entire positioning system is controlled by the raising and lowering of the positioning nut 61. When the positioning nut 61 is rotated, its threaded engagement with the sleeve 6 causes the sliding seat 7 to move up and down. As the sliding seat 7 rises or falls, the three swing arms 71 connected to it begin to move, opening or closing accordingly based on the displacement of the sliding seat 7. At the other end of the swing arm 71, it is connected to the push plate 73 via the connecting arm 72. The movement of the swing arm 71 is further transmitted, causing the push plate 73 to move accordingly. The push plate 73 finally abuts against the outer peripheral wall of the copper-insulated rivet. Through the coordinated action of the three push plates 73, the copper-insulated rivet is centered and positioned. The operator can easily adjust the positioning of the copper-insulated rivet by simply rotating the positioning nut 61, without complicated operating procedures or professional tools. In terms of positioning accuracy, the even distribution of the three swing arms 71 and the push plate 73 can apply force to the copper-insulated rivet from multiple directions, ensuring that it can be accurately pushed to the center position in all directions, effectively avoiding positioning errors such as eccentricity. By adjusting the positioning nut 61, the positioning requirements under various working conditions can be flexibly met, greatly improving the versatility and practicality of the riveting device.
[0019] As a further feature of this invention, the push plate 73 is arc-shaped. The advantages of this design are: the arc-shaped push plate 73 can perfectly fit against the outer peripheral wall of the copper underrunner, providing a tighter fit than a standard flat push plate 73. During positioning, this ensures a more uniform pushing force on the copper underrunner in all directions, preventing positional shifts caused by uneven force distribution and significantly improving positioning stability. Furthermore, the uniform force distribution helps reduce damage to the surface of the copper underrunner, ensuring its surface quality remains unaffected. When the push plate 73 contacts the outer peripheral wall of the copper underrunner, it can apply precise and stable forces from multiple directions, ensuring that the underrunner can be accurately pushed to the center position in all directions, effectively avoiding positioning errors such as eccentricity.
[0020] As a further feature of this invention, anti-slip strips are provided on the bottom surface of the base 1. The beneficial effect of this design is that during the riveting operation, the equipment will generate a certain amount of vibration and shaking. If the base 1 is unstable, it is highly likely that the entire riveting process will deviate. The presence of the anti-slip strips effectively increases the friction between the base 1 and the placement surface, ensuring the stability of the base 1's position even under high-frequency vibration, and preventing displacement from affecting the riveting accuracy.
[0021] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.
Claims
1. A riveting device for copper heat-insulating riveting in cylindrical roller bearings, comprising a base and a beam plate, the beam plate being mounted on the base, and a pressing cylinder being disposed on the beam plate, the output end of the pressing cylinder facing the base, characterized in that: The output end of the pressure cylinder is connected to a copper upper rivet, which includes a heating coil located near the pressure cylinder and several copper rivets for use at the connection port of the upper retainer. The base is provided with a copper lower rivet for engaging with the flange of the outer ring of the bearing to be processed.
2. The riveting device for copper heat-insulating riveting in cylindrical roller bearings according to claim 1, characterized in that: The four corners of the beam plate are connected to the base via connecting rods. The beam plate is sleeved on the connecting rods and slides with the connecting rods. A control nut is threaded onto the connecting rod and abuts against the beam plate.
3. The riveting device for copper heat-insulating riveting in cylindrical roller bearings according to claim 1, characterized in that: A sleeve is provided on the beam plate. The output end of the pressure cylinder passes through the sleeve and is riveted to the copper retainer. A sliding seat is slidably provided on the sleeve. Three swing arms are oscillatingly provided on the sliding seat. The other end of the swing arm is oscillatingly connected to a connecting arm. The other end of the connecting arm is oscillatingly provided with a push plate for abutting against the outer peripheral wall of the copper retainer. A support arm is oscillatingly connected to the connecting arm. The other end of the support arm is fixedly connected to the sleeve. A positioning nut is threaded on the sleeve. The sliding seat abuts against the positioning nut.
4. The riveting device for copper heat-insulating riveting in cylindrical roller bearings according to claim 3, characterized in that: The push plate is arc-shaped.
5. The riveting device for copper heat-insulating riveting in cylindrical roller bearings according to claim 1, characterized in that: The base has anti-slip strips on its bottom surface.