A rolling device for a cylindrical roller bearing cage

Abstract

The present application discloses a rolling device for a cylindrical roller bearing cage, which includes an upper die mechanism, a rotating shaft mechanism and a lower die mechanism, wherein: the upper die mechanism includes a connected upper die seat and an upper forming die, the upper forming cavity of the upper forming die is semicircular, and the upper die seat can drive the upper forming die to move up and down; the lower die mechanism includes a punching block and a connected lower die seat and a lower forming die, the punching block is located in the lower forming die, the punching block can enter and exit the lower forming cavity of the lower forming die, the lower forming cavity is semicircular, and the openings of the lower forming cavity and the upper forming cavity are arranged oppositely; the rotating shaft mechanism is located between the upper forming die and the lower forming die, the rotating shaft mechanism includes a circular rotating shaft, the circular rotating shaft is parallel to the axial direction of the upper forming cavity, and the circular rotating shaft can enter the upper forming cavity and the lower forming cavity respectively under the drive of the punching block. The present application can realize large-scale rapid production, and the intermediate process does not require manual assistance, and only manual material taking and placing is required, thereby improving the consistency of the product and the production efficiency of the product.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece rolling, and in particular to a rolling device for a cylindrical roller bearing retainer. Background Art

[0002] The workpiece bending technology generally uses a punching machine to pressurize the workpiece using a die to cause it to undergo plastic deformation, thereby obtaining the desired shape.

[0003] When producing rolled workpieces, such as bearing retainers, the traditional process is to use a rolling machine to roll the workpiece. However, during the use of existing rolling machines, each deformation step of the workpiece requires manual assistance, the rolling efficiency is low, and manual operation is difficult to ensure product consistency. In addition, due to the plastic deformation of the mold that is difficult to detect with the naked eye after long-term use, and the instability of the stamping structure, the rolled workpieces produced by traditional rolling machines usually cannot reach the standard roundness, and it is difficult to ensure the quality of the product. This is a major defect for the manufacture of precision workpieces. Traditional rolling machines are also relatively large in size and occupy a large area, which increases the land cost.

[0004] Therefore, how to improve rolling efficiency, improve product consistency and quality, and reduce costs needs to be solved urgently. Summary of the invention

[0005] In order to solve the technical problems described in the above background technology, the purpose of this application is to propose a rolling device for a cylindrical roller bearing retainer, which can automatically and one-time complete the entire rolling process, and can quickly produce a large number of rolled workpieces. It only needs manual loading and unloading, and no manual assistance is required in the intermediate process, which improves the consistency of the product and the production efficiency of the product. The mold is not prone to plastic deformation, has a long service life and low cost.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A cylindrical roller bearing cage rolling device comprises an upper die mechanism, a rotating shaft mechanism and a lower die mechanism, wherein:

[0008] The upper die mechanism includes a connected upper die seat and an upper forming die, the upper forming cavity of the upper forming die is semicircular, and the upper die seat can drive the upper forming die to move up and down; the lower die mechanism includes a stamping block and a connected lower die seat and a lower forming die, the stamping block is located in the lower forming die, and the stamping block can enter and exit the lower forming cavity of the lower forming die, the lower forming cavity is semicircular, the lower forming cavity and the opening of the upper forming cavity are arranged opposite to each other, and the lower forming cavity and the upper forming cavity can form a complete circle; the rotating shaft mechanism is located between the upper forming die and the lower forming die, and the rotating shaft mechanism includes a circular rotating shaft, the circular rotating shaft is axially parallel to the upper forming cavity, the circular rotating shaft is connected to the stamping block, and the circular rotating shaft can enter the upper forming cavity and the lower forming cavity respectively under the drive of the stamping block.

[0009] Therefore, when rolling the workpiece, first place the workpiece between the circular rotating shaft and the upper forming die, the punching block moves up and out of the lower forming cavity, driving the circular rotating shaft to move up in the direction of the upper forming die, and the circular rotating shaft drives the workpiece to gradually enter the upper forming cavity during the upward movement, and punch the workpiece, thereby obtaining a U-shaped workpiece with the opening facing downward. After the U-shaped workpiece is formed, the two ends will shrink in the lower forming die, and the lower forming die temporarily supports the U-shaped workpiece and fixes it in the upper forming cavity. At this time, the punching block moves down into the lower forming cavity, driving the circular rotating shaft to enter the lower forming cavity, and then the upper die seat drives the upper forming die to press down. During the pressing process of the upper forming die, the two ends of the opening of the U-shaped workpiece are merged with the edge guidance of the lower forming cavity of the lower forming die until the upper forming cavity coincides with the circular rotating shaft, and a complete circular workpiece surrounding the circular rotating shaft can be obtained. With the above working process as a cycle, a large number of rolled workpieces can be produced quickly, and the workpiece can complete the entire rolling process at one time. No manual assistance is required in the intermediate process, and only manual material picking and placing is required, which improves the consistency of the product and the production efficiency of the product.

[0010] The rolled workpiece is made around a circular rotating shaft, so the roundness of the rolled workpiece is closely related to the circular rotating shaft. In this embodiment, the circular rotating shaft can rotate axially, which can avoid long-term and frequent local repeated pressure causing local plastic deformation of the circular rotating shaft, and thus causing the roundness of the rolled workpiece to be unqualified, thereby ensuring product quality. Specifically, the circular rotating shaft can be rotated in advance each time stamping is performed.

[0011] Since the circular rotating shaft is connected to the punch block, it can move synchronously with the punch block and stably enter and exit the lower molding cavity. However, the lack of restrictions between the circular rotating shaft and the upper molding die will cause the circular rotating shaft to be unable to smoothly enter and exit the upper molding cavity. Therefore, as an optional implementation method of the rolling device of a cylindrical roller bearing retainer, the rotating shaft mechanism includes a guide plate, one end of which is connected to an end face of the circular rotating shaft, and the upper molding die is also provided with a guide cavity, the guide plate is located in the guide cavity, and the guide plate can move up and down along the edge of the guide cavity. In this way, the guide plate is located in the guide cavity and can move repeatedly in the guide cavity. The edge of the guide cavity can provide a guiding and limiting function for the guide plate, thereby guiding and limiting the circular rotating shaft in and out of the upper molding cavity, so that the circular rotating shaft can stably enter and exit the upper molding cavity, thereby improving the structural stability.

[0012] As an optional implementation of a cylindrical roller bearing cage rolling device, the rotating shaft mechanism also includes a rotating rod, the rotating rod is coaxially connected to the circular rotating shaft, the rotating rod passes through the circular rotating shaft and is rotatably connected to the guide plate, and the rotating rod can drive the circular rotating shaft to rotate axially. At this time, the circular rotating shaft is connected to the stamping block through the guide plate, and the circular rotating shaft can be rotated by rotating the rotating rod, which is simple to operate and convenient and labor-saving.

[0013] As an optional implementation method of a rolling device for a cylindrical roller bearing retainer, the upper molding die side is provided with a guide protrusion, and the lower molding die side is provided with a guide groove matching the guide protrusion; or, the upper molding die side is provided with a guide groove, and the lower molding die side is provided with a guide protrusion matching the guide groove. Taking the example of the upper molding die side being provided with a guide protrusion, and the lower molding die side being provided with a guide groove matching the guide protrusion, when the lower molding die is pressed down by the upper die seat, the guide protrusions on both sides of the upper molding die enter the guide grooves on both sides of the lower molding die, which can guide and limit the downward pressure of the lower molding die, further improve the structural stability, and improve the quality of the rolled workpiece.

[0014] As an optional implementation of a cylindrical roller bearing cage rolling device, a shock-absorbing column is provided at one end of the upper forming die facing the lower forming die; or a shock-absorbing column is provided at one end of the lower forming die facing the upper forming die. In this way, the shock-absorbing column can buffer the impact force of stamping, thereby reducing damage to the die and ensuring the service life of the die.

[0015] As an optional implementation of a cylindrical roller bearing cage rolling device, it also includes a positioning plate, the positioning plate includes a first positioning plate and a second positioning plate respectively connected to the two sides of the upper forming die, and the positioning plate is used to place and position the workpiece. In this way, when manually placing the material, it is only necessary to directly position the blank on the positioning plate, which is simple, convenient and fast to operate, and improves the rolling efficiency.

[0016] As an optional implementation of a cylindrical roller bearing cage rolling device, the punching block includes a first punching block and a second punching block, and the first punching block and the second punching block are arranged on both sides of the lower forming cavity along the axial direction of the circular rotating shaft. In this way, the balance of the circular rotating shaft and the reliability of punching are maintained.

[0017] As an optional implementation of a cylindrical roller bearing cage rolling device, the portion where the first punching block and / or the second punching block is connected to the circular shaft is recessed downward along the edge of the circular shaft, thereby ensuring the stability of the circular shaft and improving the structural stability.

[0018] As an optional implementation of the rolling device of the cylindrical roller bearing cage, an oil storage tank is provided on the side of the guide plate connected to the circular rotating shaft. Since the guide plate moves repeatedly in the guide cavity, lubricating oil or grease needs to be applied to the guide plate. In order to avoid excessive consumption of the lubricating oil, an oil storage tank is provided on the guide plate to store the lubricating oil, thereby ensuring that the guide plate can move smoothly and stably in the guide cavity.

[0019] As an optional implementation of a rolling device for a cylindrical roller bearing cage, the oil storage tank is X-type, I-type or O-type. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 The present invention is a three-dimensional structural schematic diagram of an illustrative embodiment of a rolling device for a cylindrical roller bearing cage.

[0022] Reference numerals in the figures:

[0023] 1. Upper die mechanism; 11. Upper die seat; 12. Upper forming die; 121. Upper forming cavity; 122. Guide protrusion;

[0024] 2. Lower die mechanism; 21. Punching block; 22. Lower die seat; 23. Lower forming die; 231. Lower forming cavity; 232. Guide cavity; 233. Guide groove;

[0025] 3. Rotating shaft mechanism; 31. Circular rotating shaft; 32. Guide plate; 321. Oil storage tank; 33. Rotating rod;

[0026] 4. Shock-absorbing column;

[0027] 5. Positioning plate. DETAILED DESCRIPTION

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings. In the drawings, the same reference numerals represent components with the same structure or similar structures but the same functions.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0030] Reference Figure 1 The present application proposes a cylindrical roller bearing cage rolling device, which includes an upper die mechanism 1, a rotating shaft mechanism 3 and a lower die mechanism 2, wherein: the upper die mechanism 1 includes a connected upper die seat 11 and an upper forming die 12, the upper forming cavity 121 of the upper forming die 12 is semicircular, and the upper die seat 11 can drive the upper forming die 12 to move up and down; the lower die mechanism 2 includes a punching block 21 and a connected lower die seat 22 and a lower forming die 23, the punching block 21 is located in the lower forming die 23, and the punching block 21 can enter and exit the lower forming cavity 121 of the lower forming die 23. The molding cavity 231, the lower molding cavity 231 is semicircular, the lower molding cavity 231 and the opening of the upper molding cavity 121 are arranged opposite to each other, and the lower molding cavity 231 and the upper molding cavity 121 can form a complete circle; the rotating shaft mechanism 3 is located between the upper molding die 12 and the lower molding die 23, and the rotating shaft mechanism 3 includes a circular rotating shaft 31, and the circular rotating shaft 31 is axially parallel to the upper molding cavity 121, and the circular rotating shaft 31 is connected to the punching block 21, and the circular rotating shaft 31 can enter the upper molding cavity 121 and the lower molding cavity 231 respectively under the drive of the punching block 21.

[0031] Therefore, refer to Figure 1When the workpiece is rolled, the workpiece is first placed between the circular rotating shaft 31 and the upper forming die 12, and the punching block 21 moves up and out of the lower forming cavity 231, driving the circular rotating shaft 31 to move up in the direction of the upper forming die 12. During the upward movement, the circular rotating shaft 31 drives the workpiece to gradually enter the upper forming cavity 121, and the workpiece is punched, so as to obtain a U-shaped workpiece with the opening facing downward. After the U-shaped workpiece is formed, the two ends will shrink in the lower forming die 23, and the lower forming die 23 temporarily supports the U-shaped workpiece and fixes it in the upper forming cavity 121. At this time, the punching block 21 moves down into the lower forming cavity 231, driving the circular rotating shaft 31 into the lower forming cavity 231, and then the upper die seat 11 drives the upper forming die 12 to press down. During the downward pressing process of the upper forming die 12, the two ends of the opening of the U-shaped workpiece are merged along the edge of the lower forming cavity 231 of the lower forming die 23 until the upper forming cavity 121 coincides with the circular rotating shaft 31, and a complete circular workpiece surrounding the circular rotating shaft 31 can be obtained. Taking the above working process as a cycle, a large number of rolled workpieces can be produced quickly. The workpiece can complete the entire rolling process at one time. No manual assistance is required in the intermediate process, and only manual material picking and placing is required, which improves product consistency and product production efficiency.

[0032] The rolled workpiece is made around the circular rotating shaft 31, so the roundness of the rolled workpiece is closely related to the circular rotating shaft 31. In this embodiment, the circular rotating shaft 31 can rotate axially, which can avoid long-term and frequent local repeated pressure causing local plastic deformation of the circular rotating shaft 31, and thus causing the roundness of the rolled workpiece to be unqualified, thereby ensuring product quality. Specifically, the circular rotating shaft 31 can be rotated in advance each time stamping is performed.

[0033] Since the circular rotating shaft 31 is connected to the punch block 21, it can move synchronously with the punch block 21 and stably enter and exit the lower molding cavity 231. However, there is no restriction between the circular rotating shaft 31 and the upper molding die 12, which will cause the circular rotating shaft 31 to be unable to smoothly enter and exit the upper molding cavity 121. Therefore, in an exemplary embodiment of a processing device for a cylindrical roller bearing retainer, the rotating shaft mechanism 3 includes a guide plate 32, one end of which is connected to an end face of the circular rotating shaft 31, and the upper molding die 12 is also provided with a guide cavity 232. The guide plate 32 is located in the guide cavity 232, and the guide plate 32 can move up and down along the edge of the guide cavity 232. In this way, the guide plate 32 is located in the guide cavity 232 and can move repeatedly in the guide cavity 232. The edge of the guide cavity 232 can provide a guiding and limiting function for the guide plate 32, thereby guiding and limiting the circular rotating shaft 31 in and out of the upper molding cavity 121, so that the circular rotating shaft 31 can stably enter and exit the upper molding cavity 121, thereby improving the structural stability.

[0034] In an exemplary embodiment of a cylindrical roller bearing cage processing device, the rotating shaft mechanism 3 further includes a rotating rod 33, which is coaxially connected to the circular rotating shaft 31, and the rotating rod 33 passes through the circular rotating shaft 31 and is rotatably connected to the guide plate 32, and the rotating rod 33 can drive the circular rotating shaft 31 to rotate axially. At this time, the circular rotating shaft 31 is connected to the stamping block 21 through the guide plate 32, and the circular rotating shaft 31 can be rotated by rotating the rotating rod 33, which is simple to operate, convenient and labor-saving.

[0035] Reference Figure 1 , a guide protrusion 122 is provided on the side of the upper forming die 12, and a guide groove 233 matching the guide protrusion 122 is provided on the side of the lower forming die 23. Therefore, when the lower forming die 23 is pressed down by the upper die seat 11, the guide protrusions 122 on both sides of the upper forming die 12 enter the guide grooves 233 on both sides of the lower forming die 23, which can guide and limit the downward pressure of the lower forming die 23, further improve the structural stability, and improve the quality of the rolled workpiece. In other embodiments, the guide groove 233 can be provided on the side of the upper forming die 12, and the guide protrusion 122 matching the guide groove 233 can be provided on the side of the lower forming die 23.

[0036] In an exemplary embodiment of a cylindrical roller bearing cage processing device, a damping column 4 is provided at one end of the upper forming die 12 facing the lower forming die 23; or a damping column 4 is provided at one end of the lower forming die 23 facing the upper forming die 12. In this way, the damping column 4 can buffer the impact force of stamping, thereby reducing damage to the die and ensuring the service life of the die.

[0037] In an exemplary embodiment of a cylindrical roller bearing cage processing device, it also includes a positioning plate 5, which includes a first positioning plate 5 and a second positioning plate 5 respectively connected to both sides of the upper forming die 12, and the positioning plate 5 is used to place and position the workpiece. In this way, when manually placing the material, it is only necessary to directly position the blank on the positioning plate 5, which is simple, convenient and fast to operate, and improves the rolling efficiency.

[0038] In an exemplary embodiment of a cylindrical roller bearing cage processing device, the punching block 21 includes a first punching block 21 and a second punching block 21, and the first punching block 21 and the second punching block 21 are arranged on both sides of the lower forming cavity 231 along the axial direction of the circular rotating shaft 31. In this way, the balance of the circular rotating shaft 31 and the reliability of punching are maintained.

[0039] In an exemplary embodiment of a cylindrical roller bearing cage processing device, the portion where the first punching block 21 and / or the second punching block 21 is connected to the circular shaft 31 is recessed downward along the edge of the circular shaft 31. In this way, the stability of the circular shaft 31 is ensured and the structural stability is improved.

[0040] In an exemplary embodiment of a cylindrical roller bearing cage processing device, an oil storage tank 321 is provided on one side of the guide plate 32 connected to the circular rotating shaft 31. Since the guide plate 32 moves repeatedly in the guide cavity 232, lubricating oil or grease needs to be applied to the guide plate 32. In order to avoid excessive consumption of lubricating oil, the oil storage tank 321 is provided on the guide plate 32 to store the lubricating oil and ensure that the guide plate 32 can move smoothly in the guide cavity 232.

[0041] In an exemplary embodiment of a cylindrical roller bearing cage processing device, the oil storage tank 321 may be X-shaped, I-shaped, or O-shaped. Figure 1 , the oil storage tank 321 is X-shaped.

[0042] In an exemplary embodiment of a processing device for a cylindrical roller bearing cage, a positioning boss is provided on the outer wall of the circular rotating shaft 31, and the positioning boss corresponds to the size and shape of the roller window of the finished bearing cage. Furthermore, the positioning boss can also elastically expand and contract in the radial direction of the circular rotating shaft 31, so that the positioning boss can enter and exit the circular rotating shaft 31. In this way, the positioning boss can position a roller window of the bearing cage to ensure the stability of the bearing cage during the rolling process, and can also calibrate the roller window. Specifically, the positioning boss is located on the upper semicircle of the circular rotating shaft 31, and the positioning boss elastically expands and contracts in the radial direction of the circular rotating shaft 31. During the process of stamping the blank into a U-shaped workpiece, the position of the bearing cage can be automatically adjusted so that the roller window enters the positioning boss.

[0043] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0044] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A cylindrical roller bearing cage curling device, characterized in that: It includes an upper mold mechanism, a rotating shaft mechanism and a lower mold mechanism, wherein: The upper die mechanism comprises an upper die seat and an upper forming die which are connected to each other. The upper forming cavity of the upper forming die is semicircular. The upper die seat can drive the upper forming die to move up and down. The lower die mechanism comprises a punching block and a connected lower die seat and a lower forming die, wherein the punching block is located in the lower forming die, and the punching block can enter and exit the lower forming cavity of the lower forming die, wherein the lower forming cavity is semicircular, and the openings of the lower forming cavity and the upper forming cavity are arranged opposite to each other, and the lower forming cavity and the upper forming cavity can form a complete circle; The rotating shaft mechanism is located between the upper forming die and the lower forming die, and the rotating shaft mechanism includes a circular rotating shaft, the circular rotating shaft is parallel to the axial direction of the upper forming cavity, the circular rotating shaft is connected to the punching block, and the circular rotating shaft can enter the upper forming cavity and the lower forming cavity respectively under the drive of the punching block; The circular rotating shaft can be rotated axially. After each stamping, the circular rotating shaft is rotated to avoid long-term and frequent local repeated pressure causing local plastic deformation and affecting the roundness of the rolled workpiece, thereby improving product consistency and product quality; It also includes a positioning plate, the positioning plate includes a first positioning plate and a second positioning plate respectively connected to two sides of the upper forming die, and the positioning plate is used to place and position the workpiece; A positioning boss is provided on the outer wall of the circular rotating shaft. The positioning boss corresponds to the size and shape of the roller window of the finished bearing retainer. The positioning boss can be elastically extended and retracted along the radial direction of the circular rotating shaft, so that the positioning boss can enter and exit the circular rotating shaft to position the roller window of the bearing retainer and ensure the stability of the bearing retainer during the rolling process.

2. The cylindrical roller bearing cage curling device according to claim 1, characterized in that: The rotating shaft mechanism comprises a guide plate, one end of which is connected to an end surface of the circular rotating shaft. The upper forming die is also provided with a guide cavity, the guide plate is located in the guide cavity, and the guide plate can move up and down along the edge of the guide cavity.

3. The cylindrical roller bearing cage curling device according to claim 2, characterized in that: The rotating shaft mechanism also includes a rotating rod, which is coaxially connected to the circular rotating shaft. The rotating rod passes through the circular rotating shaft and is rotationally connected to the guide plate. The rotating rod can drive the circular rotating shaft to rotate axially.

4. The cylindrical roller bearing cage curling device according to claim 1, characterized in that: The side surface of the upper molding die is provided with a guide protrusion, and the side surface of the lower molding die is provided with a guide groove matching the guide protrusion; or, the side surface of the upper molding die is provided with a guide groove, and the side surface of the lower molding die is provided with a guide protrusion matching the guide groove.

5. The cylindrical roller bearing cage curling device according to claim 1, characterized in that: A shock absorbing column is provided at one end of the upper forming die facing the lower forming die; or a shock absorbing column is provided at one end of the lower forming die facing the upper forming die.

6. The cylindrical roller bearing cage curling device according to claim 1, characterized in that: The punching block includes a first punching block and a second punching block, and the first punching block and the second punching block are arranged on both sides of the lower forming cavity along the axial direction of the circular rotating shaft.

7. The cylindrical roller bearing cage curling device according to claim 6, characterized in that: The portion where the first punching block and / or the second punching block is connected to the circular rotating shaft is recessed downward along the edge of the circular rotating shaft.

8. The cylindrical roller bearing cage curling device according to claim 2, characterized in that: An oil storage tank is provided on one side of the guide plate connected to the circular rotating shaft.

9. The cylindrical roller bearing cage curling device according to claim 8, characterized in that: The oil storage tank is X-shaped, I-shaped or O-shaped.

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