Bearing ring cold rolling mill
By using a positioning groove and connecting rod structure to stabilize material feeding, combined with water pump cooling, the problem of material deviating from the path and falling off in the bearing ring cold rolling mill was solved, thus improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO QIANFAN PRECISION BEARING CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-24
AI Technical Summary
During the feeding process of the bearing ring cold rolling mill, the material cannot enter the rolling area smoothly and continuously, resulting in detachment, which affects the size and shape accuracy of the product and reduces the product quality.
The system employs a positioning groove and connecting rod structure. The positioning groove guides the material along a predetermined path into the compaction area, while the connecting rod flips to prevent it from falling off. Combined with a water pump cooling system, this ensures the stability and uniform stress distribution of the material during processing.
It achieves stable and centered feeding of materials, prevents detachment, improves production efficiency and product quality, reduces overheating and internal stress, and obtains a smoother and more uniform surface.
Smart Images
Figure CN224543002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing technology, specifically to a cold rolling machine for bearing rings. Background Technology
[0002] A bearing ring cold rolling mill is a special cold forming equipment used to manufacture bearing rings (the inner or outer ring of a bearing). It applies pressure to a metal billet (usually a steel pipe or forging billet) at room temperature, and through the rotation of the mold and rolling wheel, the material undergoes plastic deformation and is gradually expanded into a ring of the required size. Patent CN209716335U discloses a symmetrical rolling die for the inner ring of a tapered roller bearing, comprising an active roller and a main shaft. The main shaft is horizontally mounted inside the circumference of the active roller. A fixing key is provided on the outer wall of the upper circumference of the middle section of the main shaft. Symmetrical rolling is used to sequentially form bearing rings, and two bearing rings are formed at once by fitting two bearing inner rings onto the active roller. This effectively solves the problem of axial force and improves production efficiency. Traditional tapered roller bearings, due to their asymmetrical cross-section, experience excessive axial force during rolling, which affects the deformation of the bearing rings, resulting in uneven wall thickness and poor roundness. The symmetrical rolling die for the inner ring of the tapered roller bearing of this invention effectively solves and avoids the above-mentioned shortcomings, thereby achieving the purpose of symmetrical rolling. At the same time, there is a baffle on the active roller to restrict the axial flow of metal, thereby improving the forming accuracy of the side of the bearing ring. Based on existing solutions and actual use, the current cold rolling mill for bearing rings still has some problems. For example, when rolling bearing rings, it is impossible to ensure that the material enters the rolling area smoothly and continuously during the feeding process. As a result, the material deviates from the predetermined path and falls off under pressure during the rolling process, which increases the risk of operation and causes deviations in the size and shape of the rings, thus affecting the quality of the product. Utility Model Content
[0003] The purpose of this utility model is to provide a cold rolling mill for bearing rings, so as to solve the problem mentioned in the background art that when rolling bearing rings, it is impossible to ensure that the material enters the rolling area smoothly and continuously during the feeding process, and the material also falls off under the pressure during the rolling process, which causes the ring size and shape deviation, thus affecting the product quality.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a cold rolling mill for bearing rings, comprising: The base has two sets of rollers at the middle of its top, and an active roller for rolling is located at the left end of the top of the base. A mounting frame is fixedly installed at the left end of the top of the base, and a telescopic core roller is located at the right end of the top of the mounting frame. A cooling component is located at the top of the mounting frame. Transmission grooves are fixedly installed at both the front and rear ends of the base, and a moving component is located inside the transmission grooves. A mounting frame is located at the right end of the top of the base, and a limit component is located in the groove of the mounting frame.
[0005] Preferably, the cooling assembly includes a water tank, a water pump, a connecting pipe, and nozzles. The water tank is fixedly installed at the left end of the top of the mounting frame, and the water pump is installed at the right end of the water tank. The connecting pipe is fixedly installed at the right end of the top of the mounting frame, and the left end of the connecting pipe is fixedly connected to the output end of the water pump. Nozzles are fixedly installed at both the front and rear ends of the bottom of the mounting frame, and the upper end of the nozzles is fixedly connected to the pipe body of the connecting pipe.
[0006] Preferably, the moving component includes a synchronous pulley, a belt, a mounting block, and a motor. Both the left and right ends of the transmission groove are rotatably connected to synchronous pulleys. The left synchronous pulley and the right synchronous pulley in the transmission groove are connected together by a belt sleeve, and a mounting block is fixedly installed on the belt body. The right end of the top of the transmission groove is fixedly installed with a motor, and the output end of the motor is fixedly connected to the shaft of the right synchronous pulley in the transmission groove.
[0007] Preferably, the interior of the mounting frame is hollow, and the left end of the mounting frame is open. The side wall of the mounting frame is fixedly connected to the mounting block.
[0008] Preferably, the limiting component includes a connecting rod, a guide roller, a positioning groove, a rotating rod, a hinge rod, and a stepper motor. The front and rear ends of the left end of the mounting frame are rotatably connected to the connecting rod. The right end of the connecting rod extends through into the interior of the mounting frame, and the left end of the connecting rod is rotatably connected to the guide roller. A positioning groove is fixedly installed at the middle position of the left end of the mounting frame, and the left end of the positioning groove is set in a semi-arc structure. A rotating rod is rotatably connected at the middle position inside the mounting frame, and both the left and right ends of the rotating rod are rotatably connected to the hinge rod. A stepper motor is fixedly installed at the middle position of the top of the mounting frame, and the output end of the stepper motor is fixedly connected to the upper end of the rotating rod.
[0009] Preferably, the left hinge rod and the right hinge rod of the rotating rod are arranged in an alternating manner, the rod body of the hinge rod is rotatably connected to the right end of the connecting rod, and the rotating rod drives the connecting rod to form a flipping structure through the hinge rod.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This bearing ring cold rolling machine uses a positioning groove to guide the workpiece into the rolling area along a predetermined path, thereby maintaining a stable and centered state and accelerating the feeding speed to achieve continuous high-speed production. At the same time, the flipping of the connecting rod can effectively prevent accidental slippage or detachment. The cooperation between the connecting rod and the positioning groove can keep the workpiece from shifting during the processing and ensure that the workpiece is subjected to uniform force during the rolling process. Then, the operation of the water pump can reduce overheating during the rolling process and reduce the internal stress generated during the deformation process, thereby obtaining a smoother and more uniform surface. 1. The system is equipped with a transmission groove, synchronous pulleys, a belt, mounting blocks, a motor, a mounting frame, and a positioning groove. The left and right synchronous pulleys in the transmission groove are connected by a belt sleeve. The output end of the motor is fixedly connected to the shaft of the right synchronous pulley in the transmission groove. The operation of the motor drives the belt to rotate. The mounting block is fixedly installed on the belt and is fixedly connected to the mounting frame. When the belt rotates, it synchronously drives the mounting block to move, which in turn drives the mounting frame to slide. A positioning groove is fixedly installed in the middle of the left end of the mounting frame. The positioning groove is set in a semi-circular structure. The mounting frame can drive the positioning groove to move, and the movement of the positioning groove can guide and push the material. The material enters the crushing area along a predetermined path through the positioning groove, thereby maintaining the stability and centering of the material, accelerating the feeding speed, and realizing continuous and high-speed production. 2. The system comprises a mounting frame, connecting rods, guide rollers, rotating rods, hinge rods, and a stepper motor. The mounting frame is hollow, with its left end open. Connecting rods are rotatably connected to both ends of the left end of the mounting frame, with the right end of each connecting rod extending into the interior of the mounting frame. A rotating rod is rotatably connected to the center of the mounting frame, and hinge rods are rotatably connected to the left and right ends of the rotating rods in an alternating manner. The hinge rods are also rotatably connected to the right ends of the connecting rods. Since the output end of the stepper motor is fixedly connected to the rotating rod, when the stepper motor is running, the rotating rod drives the connecting rod to rotate via the hinge rod. The guide roller is rotatably connected to the left end of the connecting rod, and the rotation of the connecting rod causes the guide roller to come into contact with the material. The rotation of the connecting rod effectively prevents accidental slippage or detachment. Furthermore, the cooperation with the positioning groove ensures that the workpiece does not shift during processing and that the workpiece is subjected to uniform force during rolling, thereby improving product quality. 3. It is equipped with a water tank, a water pump, a connecting pipe, and a nozzle. The water pump is fixedly connected to the water tank, and the output end of the water pump is also fixedly connected to the left end of the connecting pipe. The nozzle is also fixedly connected to the connecting pipe. By operating the water pump, water can be drawn from the water tank and sprayed out through the cooperation between the connecting pipe and the nozzle, thereby cooling the material during the compaction process. The operation of the water pump can reduce overheating during the compaction process, resulting in a smoother and more uniform surface and reducing the internal stress generated during deformation. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a top view of the base of this utility model. Figure 3 This is a top view of the mounting bracket of this utility model. Figure 4 This is a top sectional view of the mounting frame of this utility model; Figure 5 This is a schematic diagram of the main sectional view of the mounting frame of this utility model; Figure 6 This is a schematic diagram of the main sectional view of the transmission groove of this utility model; Figure 7 This is a schematic diagram of the overall structure of the mounting frame of this utility model.
[0012] In the diagram: 1. Base; 2. Roller; 3. Drive roller; 4. Mounting frame; 5. Core roller; 6. Water tank; 7. Water pump; 8. Connecting pipe; 9. Nozzle; 10. Transmission groove; 11. Synchronous pulley; 12. Belt; 13. Mounting block; 14. Motor; 15. Mounting frame; 16. Connecting rod; 17. Guide roller; 18. Positioning groove; 19. Rotating rod; 20. Hinge rod; 21. Stepper motor. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0014] Please see Figure 1-7This utility model provides a technical solution: a cold rolling machine for bearing rings, comprising: a base 1, a rolling roller 2, a drive roller 3, a mounting frame 4, a core roller 5, a water tank 6, a water pump 7, a connecting pipe 8, a nozzle 9, a transmission groove 10, a synchronous pulley 11, a belt 12, a mounting block 13, a motor 14, a mounting frame 15, a connecting rod 16, a guide roller 17, a positioning groove 18, a rotating rod 19, a hinge rod 20, and a stepper motor 21.
[0015] First, as attached Figure 1 Appendix Figure 2 Appendix Figure 6 and attached Figure 7 As shown, when using a cold rolling mill to roll the bearing rings, the rings are first placed on the right side of the top of the base 1. Since the positioning groove 18 is fixedly installed at the middle position of the left end of the mounting frame 15, and the positioning groove 18 is set in a semi-circular structure, the rings come into contact with the positioning groove 18, and the positioning groove 18 restricts the orientation of the rings. Then, transmission grooves 10 are fixedly installed at both the front and rear ends of the top of the base 1, and synchronous pulleys 11 are rotatably connected to the left and right ends inside the transmission grooves 10. Simultaneously, the synchronous pulley 11 at the left end of the transmission groove 10 and the synchronous pulley 11 at the right end of the transmission groove 10 are connected together by a belt 12. A mounting block 13 is installed on the belt body of the belt 12, and the mounting block 13 is fixedly connected to the mounting frame 15. After the rings are placed... The controller controls the forward and reverse operation of the motor 14. Since the output end of the motor 14 is fixedly connected to the shaft of the right synchronous pulley 11 in the transmission groove 10, the forward and reverse operation of the motor 14 drives the belt 12 to rotate left and right, and causes the mounting block 13 to drive the mounting frame 15 to slide left and right. The movement of the mounting frame 15 can synchronously drive the positioning groove 18 to move, and then the positioning groove 18 pushes the ring to slide above the base 1 and pushes the ring to the bottom of the core roller 5. After the ring is placed under the core roller 5, the controller can control the operation of the core roller 5, so that the core roller 5 is inserted into the hole of the ring, thus fixing the ring in the designated position. The positioning groove 18 guides and pushes the ring, thereby maintaining the stability and centering of the workpiece, thereby speeding up the feeding speed and realizing continuous high-speed production. As attached Figure 1 Appendix Figure 2 Appendix Figure 4 Appendix Figure 5 and attached Figure 7As shown, after the ring is pushed to the designated position, the controller controls the operation of the roller 2, thereby limiting the ring. Simultaneously, the controller controls the operation of the drive roller 3 to roll the ring. When the ring is cold-rolled through the cooperation between the drive roller 3 and the roller 2, the motor 14, after conveying the ring to the designated position via the positioning groove 18, can also control the operation of the stepper motor 21. During the rolling of the ring, the output end of the stepper motor 21 is fixed to the upper end of the rotating rod 19. Hinged rods 20 are rotatably connected to both ends of the rotating rod 19. The mounting frame 15 is in a hollow state, with the left end of the mounting frame 15 being through-hole. Connecting rods 16 are rotatably connected to both the front and rear ends of the left end of the mounting frame 15, and the connecting rods 16 pass through... The rod extends into the interior of the mounting frame 15 and is also rotatably connected to the right end of the connecting rod 16 via the hinge rod 20 in an alternating manner. When the stepper motor 21 drives the rotating rod 19 to rotate, the hinge rod 20 can drive the two sets of connecting rods 16 to flip, causing the two sets of connecting rods 16 to move closer or further apart. Since the left end of the connecting rod 16 is rotatably connected to the guide roller 17, the connecting rod 16 synchronously drives the guide roller 17 to flip. Thus, the opening angle of the connecting rod 16 can be adjusted according to the size of the ring being rolled. Since the guide roller 17 has a self-locking ability when not in operation, the guide roller 17 can fit with the ring during rolling. The connection between the connecting rod 16 and the guide roller 17 can effectively prevent accidental slippage or detachment, keep the workpiece in the correct position during processing, and ensure that the workpiece is evenly stressed during rolling. As attached Figure 1 and attached Figure 3 As shown, during the rolling process of the ring, the water pump 7 can be controlled by the controller to operate. Because high temperature is generated between the drive roller 3 and the ring during cold rolling, a mounting frame 4 is fixedly installed on the top left end of the base 1, and a water tank 6 is fixedly installed on the top of the mounting frame 4. The input end of the water pump 7 is fixedly connected to the right end of the water tank 6, so the operation of the water pump 7 can draw water from the inside of the water tank 6. A connecting pipe 8 is fixedly installed on the top right end of the mounting frame 4, and the pipe body of the connecting pipe 8 is fixedly connected to the nozzle 9 at the bottom of the mounting frame 4. At the same time, the output end of the water pump 7 is fixedly connected to the pipe body on the left end of the connecting pipe 8. So the operation of the water pump 7 and the cooperation between the connecting pipe 8 and the nozzle 9 can spray water from the inside of the water tank 6 to cool the ring during cold rolling. Cooling the workpiece during processing can reduce overheating and reduce the internal stress generated during deformation, resulting in a smoother and more uniform surface.
[0016] The contents not described in detail in this specification are existing technologies known to those skilled in the art. All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0017] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A cold rolling mill for bearing rings, comprising: The base (1) has two sets of rollers (2) at the middle position of the top of the base (1) and an active roller (3) for rolling is provided at the left end of the top of the base (1). The base (1) is characterized in that: a mounting frame (4) is fixedly installed at the left end of the top of the base (1), and a core roller (5) for telescopic movement is provided at the right end of the top of the mounting frame (4). A cooling component is provided at the top of the mounting frame (4). A transmission groove (10) is fixedly installed at both the front and rear ends of the base (1), and a moving component is provided inside the transmission groove (10). A mounting frame (15) is provided at the right end of the top of the base (1), and a limiting component is provided in the groove of the mounting frame (15).
2. The bearing ring cold rolling machine according to claim 1, characterized in that: The cooling assembly includes a water tank (6), a water pump (7), a connecting pipe (8), and a nozzle (9). The water tank (6) is fixedly installed on the left end of the top of the mounting bracket (4), and the water pump (7) is installed on the right end of the water tank (6). The connecting pipe (8) is fixedly installed on the right end of the top of the mounting bracket (4), and the left end of the connecting pipe (8) is fixedly connected to the output end of the water pump (7). The nozzles (9) are fixedly installed on both the front and rear ends of the bottom of the mounting bracket (4), and the upper end of the nozzles (9) is fixedly connected to the pipe body of the connecting pipe (8).
3. The bearing ring cold rolling mill according to claim 1, characterized in that: The moving component includes a synchronous pulley (11), a belt (12), a mounting block (13), and a motor (14). The left and right ends of the transmission groove (10) are rotatably connected to the synchronous pulley (11). The left synchronous pulley (11) in the transmission groove (10) and the right synchronous pulley (11) in the transmission groove (10) are connected together by the belt (12). The mounting block (13) is fixedly installed on the belt (12). The motor (14) is fixedly installed at the right end of the top of the transmission groove (10). The output end of the motor (14) is fixedly connected to the shaft of the right synchronous pulley (11) in the transmission groove (10).
4. A cold rolling mill for bearing rings according to claim 1, characterized in that: The interior of the mounting frame (15) is hollow, and the left end of the mounting frame (15) is open. The side wall of the mounting frame (15) is fixedly connected to the mounting block (13).
5. A cold rolling mill for bearing rings according to claim 1, characterized in that: The limiting assembly includes a connecting rod (16), a guide roller (17), a positioning groove (18), a rotating rod (19), a hinge rod (20), and a stepper motor (21). The front and rear ends of the left end of the mounting frame (15) are rotatably connected to the connecting rod (16). The right end of the connecting rod (16) extends through into the interior of the mounting frame (15), and the left end of the connecting rod (16) is rotatably connected to the guide roller (17). The positioning groove (18) is fixedly installed at the middle position of the left end of the mounting frame (15), and the left end of the positioning groove (18) is set in a semi-arc structure. The rotating rod (19) is rotatably connected at the middle position inside the mounting frame (15), and the left and right ends of the rotating rod (19) are rotatably connected to the hinge rod (20). The stepper motor (21) is fixedly installed at the middle position of the top of the mounting frame (15), and the output end of the stepper motor (21) is fixedly connected to the upper end of the rotating rod (19).
6. A cold rolling mill for bearing rings according to claim 5, characterized in that: The left hinge rod (20) and the right hinge rod (20) of the rotating rod (19) are arranged in an alternating manner. The rod body of the hinge rod (20) is rotatably connected to the right end of the connecting rod (16), and the rotating rod (19) drives the connecting rod (16) to form a flipping structure through the hinge rod (20).