M-shaped forming die for radial needle bearing stretching retainer
By setting up a sliding slider and spring mechanism on the forming die of the needle roller bearing cage, the problem of excessive punching pressure during the stamping process is solved, effectively protecting the cage and the round rod, ensuring the stability of the stamping process and accuracy.
Patent Information
- Application Number
- CN202420652396.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-01
AI Technical Summary
During the production process of needle roller bearing cages, existing molds are difficult to effectively fix and protect the cages during stamping, resulting in excessive punching pressure that may damage the cages and the round rods.
Design a centripetal needle roller bearing tensile cage M forming mold, and set up a sliding slider and spring mechanism. The slider provides elastic potential energy during stamping, slows down the molding mold and avoids excessive punching pressure through the limit block. , protective cage and round rod.
Effectively slow down the descent speed of the forming die, avoid excessive punching pressure to damage the cage and round rod, and ensure the stability and accuracy of the stamping process.
Smart Images
Figure CN222277235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearing production, in particular to an M-shaped forming die for a radial needle roller bearing stretching retainer. Background Art
[0002] The radial needle roller and cage assembly is an independent rolling element. The two guide surfaces of the cage have a wide spacing, which can accurately guide the needle roller and keep the needle roller in the correct position. This type of bearing is suitable for occasions where the shaft and seat hole can be used as raceways. It is only necessary to process the shaft and bearing seat hole raceways to the specified dimensional accuracy and geometric accuracy to ensure high rotation accuracy in the smallest space. In the production process of the cage, an M-shaped forming die is required to stamp the cage.
[0003] The existing needle roller bearing retainer can refer to the utility model with patent announcement number CN217055996U, which discloses a retainer for needle roller bearings, "including a wide outer sleeve, a connecting rod, an outer roller mounting assembly and an inner roller mounting assembly; a plurality of connecting rods are evenly arranged circumferentially between the upper wide outer sleeve and the lower wide outer sleeve at intervals, and a needle roller groove is between every two adjacent connecting rods, and a needle roller is arranged in each needle roller groove; there are two outer roller mounting assemblies, and the two outer roller mounting assemblies are fixedly arranged on the top inner wall of the upper wide outer sleeve located on the outer side of the needle roller; there are two inner roller mounting assemblies, and the two inner roller mounting assemblies are fixedly arranged on the bottom inner wall of the lower wide outer sleeve located on the inner side of the needle roller. The retainer for needle roller bearings provided by the utility model can prevent the needle roller from falling off, and at the same time lubricate the needle roller well." In the production process of the retainer, an M-shaped molding die is required to be used for stamping it, and the retainer needs to be fixed during stamping.
[0004] In order to solve the above problems, the present application proposes a radial needle roller bearing stretching cage M-shaped molding die. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a radial needle roller bearing stretching retainer M-shaped forming die, a bearing retainer is movably arranged under the forming die, a needle roller mounting groove is provided on the bearing retainer, a round support rod is movably provided in the bearing retainer, a fixing ring and a threaded head are fixed on the round support rod, a fixing sleeve is spirally provided on the threaded head, a threaded groove is provided on the fixing sleeve, a sliding groove is provided on the side of the forming die, a limit block is fixedly provided on the side of the forming die, a spring is fixedly provided at the bottom of the limit block, and a slider is fixedly provided at the other end of the spring.
[0006] Preferably, the limit block and the top of the slide groove are located in the same horizontal plane, and a spring is also fixed on the top of the slide groove. The shape of the slide groove is "T"-shaped, and the shape of the slider is "H"-shaped. The slider is slidably connected in the slide groove.
[0007] Preferably, the diameter of the inner circle of the bearing retainer is equal to the diameter of the right part of the support rod, the diameter of the middle part of the support rod is smaller than the diameter of the inner circle of the bearing retainer, the diameter of the fixing ring is larger than the diameter of the inner circle of the bearing retainer, and the diameter of the threaded head is equal to the diameter of the inner circle of the bearing retainer.
[0008] Preferably, the thread head is spirally connected in the thread groove, the diameter of the outer circle of the fixing sleeve is larger than the diameter of the inner circle of the bearing retainer, and the width of the fixing sleeve is equal to the width of the thread head.
[0009] Preferably, the bottom of the forming mold is in an "M" shape, and the width of the forming mold is equal to the width of the needle roller mounting groove.
[0010] Preferably, the distance from the bottom of the slide groove to the bottom of the forming mold is equal to the depth of the needle roller mounting groove.
[0011] The above technical solution of the utility model has the following beneficial technical effects:
[0012] The utility model provides a sliding slider on the "M"-shaped forming die. When the slider is pushed by the retaining frame, the spring provides elastic potential energy to the slider, thereby slowing down the descending speed of the forming die after the needle roller mounting groove is stamped. When it approaches the limit block, it stops descending, thereby preventing the retaining frame and the supporting round rod from being damaged by excessive stamping pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the exploded structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the front view structure of the utility model;
[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.
[0016] Reference numerals:
[0017] 1. Bearing retainer; 101. Needle roller mounting groove; 2. Support rod; 201. Fixing ring; 3. Threaded head; 4. Fixing sleeve; 401. Threaded groove; 5. Forming die; 501. Slide groove; 502. Limit block; 6. Spring; 7. Slider. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0019] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.
[0020] A radial needle roller bearing stretching cage M-shaped forming die provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.
[0021] Embodiment 1:
[0022] Combination Figure 1-3 As shown, the utility model provides a radial needle roller bearing stretching retainer M-shaped forming die, a bearing retainer 1 is movably arranged below the forming die 5, a needle roller mounting groove 101 is provided on the bearing retainer 1, a round support rod 2 is movably arranged in the bearing retainer 1, a fixing ring 201 and a threaded head 3 are fixedly provided on the round support rod 2, a fixing sleeve 4 is spirally provided on the threaded head 3, a threaded groove 401 is provided on the fixing sleeve 4, a slide groove 501 is provided on the side of the forming die 5, a limit block 502 is fixedly provided on the side of the forming die 5, a spring 6 is fixedly provided at the bottom of the limit block 502, a slider 7 is fixedly provided at the other end of the spring 6, the limit block 502 and the top of the slide groove 501 are located in the same horizontal plane, the top of the slide groove 501 is also fixedly provided with a spring 6, and the shape of the slide groove 501 is "T ” shape, the shape of the slider 7 is “H” shape, the slider 7 is slidably connected in the slide groove 501, the diameter of the inner circle of the bearing retainer 1 is equal to the diameter of the right part of the support rod 2, the diameter of the middle part of the support rod 2 is smaller than the diameter of the inner circle of the bearing retainer 1, the diameter of the fixing ring 201 is larger than the diameter of the inner circle of the bearing retainer 1, the diameter of the thread head 3 is equal to the diameter of the inner circle of the bearing retainer 1, the thread head 3 is spirally connected in the thread groove 401, the diameter of the outer circle of the fixing sleeve 4 is larger than the diameter of the inner circle of the bearing retainer 1, the width of the fixing sleeve 4 is equal to the width of the thread head 3, the shape of the bottom of the forming mold 5 is “M” shape, the width of the forming mold 5 is equal to the width of the needle roller mounting groove 101, and the distance from the bottom of the slide groove 501 to the bottom of the forming mold 5 is equal to the depth of the needle roller mounting groove 101.
[0023] Specifically, a needle roller mounting groove 101 is opened on the bearing retainer 1, and the needle roller mounting groove 101 is stamped by the forming die 5. A supporting rod 2 is movably inserted into the bearing retainer 1, and a fixing ring 201 and a threaded head 3 are fixedly welded on the supporting rod 2. The diameter of the middle part of the supporting rod 2 is smaller than the diameter of the inner circle of the bearing retainer 1, so that the forming die 5 will not easily touch the supporting rod 2 during stamping. The diameter of the fixing ring 201 is larger than the diameter of the inner circle of the bearing retainer 1, so that the bearing retainer 1 will be blocked on the left side of the fixing ring 201. The diameter of the threaded head 3 is equal to the diameter of the inner circle of the bearing retainer 1. The thread head 3 is capable of passing through the bearing retainer 1, a fixing sleeve 4 is spirally connected to the thread head 3, and a thread groove 401 is provided on the fixing sleeve 4 so that the fixing sleeve 4 can be fixed on the thread head 3, so that the fixing sleeve 4 is located on the left side of the bearing retainer 1, and the outer diameter of the fixing sleeve 4 is larger than the inner diameter of the bearing retainer 1, so that the fixing sleeve 4 can block the bearing retainer 1 from moving to the left, thereby cooperating with the fixing ring 201 on the right side of the bearing retainer 1 to fix the bearing retainer 1 in the middle, so that the bearing retainer 1 will not move, and at the same time, the supporting rod 2 can drive the bearing retainer 1 to rotate together, so that the molding die 5 can evenly open the needle roller installation groove 101 on the bearing retainer 1, and a forming mold 5 is movably arranged above the bearing retainer 1, and the bottom of the forming mold 5 is "M"-shaped, so that when the forming mold 5 is stamping the bearing retainer 1, the "M"-shaped needle roller installation groove 101 can be completed. A "T"-shaped slide groove 501 is opened on the side of the forming mold 5, and an "H"-shaped slider 7 is slidably connected in the slide groove 501, and the distance from the bottom of the slide groove 501 to the bottom of the forming mold 5 is equal to the depth of the needle roller installation groove 101, so that when the forming mold 5 reaches the distance from the bottom of the slide groove 501 when stamping the bearing retainer 1, The side wall of the bearing retainer 1 is penetrated without touching the supporting round rod 2 inside the bearing retainer 1. Two limit blocks 502 are fixedly welded on the side of the forming die 5. The limit blocks 502 and the top of the slide groove 501 are located in the same horizontal plane. Springs 6 are fixedly welded on the limit blocks 502 and the top of the slide groove 501. The other end of the spring 6 is fixedly welded on the slider 7, so that the forming die 5 will touch the slider 7 to compress the spring 6 when stamping the bearing retainer 1, thereby providing elastic potential energy to the slider 7, slowing down the descending speed of the forming die 5, and avoiding excessive stamping pressure to damage the bearing retainer 1 and the supporting round rod 2.
[0024] The working principle and use process of the utility model are as follows: first, the unperforated bearing retainer 1 is sleeved on the middle part of the supporting rod 2, the fixing sleeve 4 is screwed on the threaded head 3, and the bearing retainer 1 is fixed with the fixing ring 201, and the supporting rod 2 is connected to a device capable of controlling the rotation angle, so that the bearing retainer 1 rotates at the same angle each time, and the forming die 5 is casually aligned with the top of the bearing retainer 1, and the machine is started to punch the bearing retainer 1. When the forming die 5 is punched to the depth of the needle roller mounting groove 101, the outer surface of the bearing retainer 1 will touch the slider 7, thereby squeezing the spring 6. When the slider 7 is squeezed to close to the limit block 502, the punching speed of the forming die 5 will decrease rapidly, thereby preventing the bottom of the forming die 5 from touching the surface in the middle of the supporting rod 2, and then the forming die 5 will rebound and rise, thereby continuing to punch the next needle roller mounting groove 101.
[0025] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.
Claims
1. A radial needle roller bearing stretching cage M-shaped forming die, wherein a bearing cage (1) is movably arranged below the forming die (5), characterized in that: The bearing retainer (1) is provided with a needle roller mounting groove (101), a round support rod (2) is movably provided inside the bearing retainer (1), a fixing ring (201) and a threaded head (3) are fixedly provided on the round support rod (2), a fixing sleeve (4) is spirally provided on the threaded head (3), a threaded groove (401) is provided on the fixing sleeve (4), a sliding groove (501) is provided on the side of the forming mold (5), a limiting block (502) is fixedly provided on the side of the forming mold (5), a spring (6) is fixedly provided at the bottom of the limiting block (502), and a sliding block (7) is fixedly provided at the other end of the spring (6).
2. The radial needle roller bearing stretching cage M-shaped forming die according to claim 1, characterized in that: The limit block (502) and the top of the slide groove (501) are located in the same horizontal plane. The top of the slide groove (501) is also fixed with a spring (6). The shape of the slide groove (501) is "T"-shaped. The shape of the slider (7) is "H"-shaped. The slider (7) is slidably connected in the slide groove (501).
3. The radial needle roller bearing stretching cage M-shaped forming die according to claim 1, characterized in that: The diameter of the inner circle of the bearing retainer (1) is equal to the diameter of the right part of the supporting rod (2), the diameter of the middle part of the supporting rod (2) is smaller than the diameter of the inner circle of the bearing retainer (1), the diameter of the fixing ring (201) is larger than the diameter of the inner circle of the bearing retainer (1), and the diameter of the threaded head (3) is equal to the diameter of the inner circle of the bearing retainer (1).
4. The radial needle roller bearing stretching cage M-shaped forming die according to claim 1, characterized in that: The thread head (3) is spirally connected in the thread groove (401), the outer diameter of the fixing sleeve (4) is greater than the inner diameter of the bearing retainer (1), and the width of the fixing sleeve (4) is equal to the width of the thread head (3).
5. The radial needle roller bearing stretching cage M-shaped forming die according to claim 1, characterized in that: The bottom of the forming mold (5) is in an "M" shape, and the width of the forming mold (5) is equal to the width of the needle roller mounting groove (101).
6. The radial needle roller bearing stretching cage M-shaped forming die according to claim 1, characterized in that: The distance from the bottom of the slide groove (501) to the bottom of the forming mold (5) is equal to the depth of the needle roller installation groove (101).