Shaping die and machining die for deep groove ball bearing retainer

Abstract

The utility model discloses a shaping die and a processing die for a deep groove ball bearing retainer, which comprise an upper shaping die, a lower shaping die and a lower shaping die, the shaping lower die is provided with a second ball cavity, the first ball cavity is opposite to the second ball cavity, the first ball cavity is used for containing a ball pocket of the retainer, and a shaping ball used for shaping the ball pocket of the retainer is placed in the second ball cavity; and the shaping core is located in the shaping lower die, the outer side of the shaping core can be sleeved with the retainer, a third ball cavity is formed in the position, making contact with the second ball cavity, of the shaping core, and the shaping ball is located in the space between the second ball cavity and the third ball cavity. After the shaping upper die moves towards the shaping lower die, the first ball cavity is opposite to the second ball cavity, under the action of extrusion force, the shaping ball extrudes a ball pocket of the retainer, the ball pocket is limited between the shaping ball and the first ball cavity, the ball pocket is shaped through extrusion of the shaping ball and the first ball cavity, and therefore the consistency of the shape of the ball pocket is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing processing, in particular to a shaping die and a processing die for a deep groove ball bearing retainer. Background Art

[0002] Bearing is an important component in modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient of the mechanical rotating body during movement, and ensure the rotation accuracy of the mechanical rotating body.

[0003] A bearing generally consists of four parts: an inner ring, an outer ring, rolling elements and a cage. The inner ring cooperates with the shaft and rotates with the shaft; the outer ring cooperates with the bearing seat and plays a supporting role; the rolling elements are evenly distributed between the inner and outer rings with the help of the cage, and their shape, size and number directly affect the performance and life of the rolling bearing; the cage, also known as the bearing cage or bearing retainer, refers to a bearing part that partially wraps all or part of the rolling elements and moves with them. It is used to isolate the rolling elements, enable the rolling elements to be evenly distributed along the circumference of the bearing and keep the rolling elements in the bearing, and usually guides the rolling elements to rotate for lubrication.

[0004] The shapes of the cages of different types of bearings may be different. For example, the cage used for deep groove ball bearings is generally called a wave-shaped cage, that is, there are protrusions (or grooves) on the cage to form the ball pocket position of the rolling body. However, the shape of the ball pocket after molding may have processing differences or the shape of the ball pocket may be inconsistent.

[0005] Therefore, how to provide a shaping mold for a deep groove ball bearing cage to shape the ball pocket of the deep groove ball bearing cage is a technical problem that needs to be solved urgently by skilled technicians. Utility Model Content

[0006] In view of this, the utility model provides a shaping die for a deep groove ball bearing cage to shape the ball pocket of the deep groove ball bearing cage. In addition, the utility model also provides a processing die having the shaping die for the deep groove ball bearing cage.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A shaping die for a deep groove ball bearing cage, comprising:

[0009] A shaping upper die, wherein the shaping upper die has a first ball cavity;

[0010] A shaping lower mold, wherein the shaping lower mold has a second ball cavity, the first ball cavity is opposite to the second ball cavity, and the first ball cavity is used to accommodate the ball pocket of the retainer, and the second ball cavity is used to place a shaping ball for shaping the ball pocket of the retainer;

[0011] A shaping core, wherein the shaping core is located inside the shaping lower mold, and a retaining frame can be sleeved on the outside of the shaping core, a third ball cavity is provided at a position where the shaping core contacts the second ball cavity, and the shaping ball is located in the space between the second ball cavity and the third ball cavity.

[0012] Preferably, in the above-mentioned shaping mold for the deep groove ball bearing retainer, the shaping core is located in the middle of the shaping lower mold, and the axis of the shaping core, the axis of the shaping lower mold and the axis of the shaping upper mold coincide.

[0013] Preferably, in the above-mentioned shaping mold for the deep groove ball bearing retainer, the first ball cavity is a hemispherical groove, and the diameter of the first ball cavity is equal to the diameter of the shaping ball;

[0014] The third spherical cavity is a circular arc groove, the second spherical cavity is a circular arc groove, and the second spherical cavity, the third spherical cavity and the first spherical cavity cooperate to form a plastic space.

[0015] Preferably, in the above-mentioned shaping mold for the deep groove ball bearing cage, the shaping core comprises:

[0016] A first end, the first end protrudes from the shaping lower die, and the third ball cavity is provided at a position where the first end contacts the second ball cavity;

[0017] The second end is inserted into the mounting hole of the shaping lower die, and the shaping core is detachably connected to the shaping lower die.

[0018] Preferably, in the above-mentioned shaping mold of the deep groove ball bearing retainer, the diameter of the first end is larger than the diameter of the second end, the second end is cooperatively connected with the mounting hole of the shaping lower mold, and the step formed by the first end and the second end is axially limited with the shaping lower mold.

[0019] Preferably, in the above-mentioned shaping mold for the deep groove ball bearing retainer, the shaping upper mold has a positioning hole on one side close to the shaping lower mold, the shaping core can be inserted into the positioning hole, and the first ball cavity is provided on the edge of the positioning hole.

[0020] Preferably, in the above-mentioned shaping mold for the deep groove ball bearing cage,

[0021] The shaping upper die is detachably mounted on the upper die plate of the machine tool;

[0022] and / or,

[0023] The shaping lower die is detachably mounted on the lower die plate of the machine tool;

[0024] and / or,

[0025] The shaping core is detachably connected to the shaping lower die.

[0026] Preferably, in the above-mentioned shaping mold for the deep groove ball bearing retainer, the shaping upper mold, the upper mold of the forming mold for processing the ball pocket of the retainer, and the upper mold of the punching mold for punching the retainer are all integrated in the upper mold plate, and the upper mold of the forming mold, the shaping upper mold and the upper mold of the punching mold are arranged in sequence along the conveying direction of the retainer.

[0027] Preferably, in the above-mentioned shaping mold for the deep groove ball bearing cage,

[0028] The shaping upper die is detachably fixed to the upper die plate via a shaping upper die seat;

[0029] And / or, the shaping lower die is detachably fixed to the lower die base via a shaping lower die base.

[0030] A deep groove ball bearing cage processing device comprises a deep groove ball bearing cage shaping mold, wherein the deep groove ball bearing cage shaping mold is any one of the deep groove ball bearing cage shaping molds described above.

[0031] The utility model discloses a shaping mold for a deep groove ball bearing retainer. After the shaping upper mold moves toward the shaping lower mold, the first ball cavity is opposite to the second ball cavity. Under the action of the extrusion force, the shaping ball squeezes the ball pocket of the retainer so that the ball pocket is limited between the shaping ball and the first ball cavity, and the ball pocket is shaped by squeezing the shaping ball and the first ball cavity, thereby ensuring the consistency of the shape of the ball pocket. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic structural diagram of a deep groove ball bearing retainer disclosed in an embodiment of the utility model;

[0034] Figure 2 It is a structural schematic diagram of a processing mold for a deep groove ball bearing cage disclosed in an embodiment of the utility model;

[0035] Figure 3 This is a disassembled view of a shaping die for a deep groove ball bearing cage disclosed in an embodiment of the utility model;

[0036] Figure 4 It is a front view of a shaping mold for a deep groove ball bearing retainer disclosed in an embodiment of the utility model;

[0037] Figure 5 for Figure 4 Sectional view in the AA direction;

[0038] Figure 6 It is a structural schematic diagram of a partial structure of a shaping mold for a deep groove ball bearing cage disclosed in an embodiment of the utility model;

[0039] Figure 7 It is a structural schematic diagram of a shaping upper die of a shaping die disclosed in an embodiment of the utility model;

[0040] Figure 8 It is a structural schematic diagram of a shaping lower die of a shaping die disclosed in an embodiment of the utility model;

[0041] Fig. 9 It is a structural schematic diagram of a shaping core of a shaping mold disclosed in an embodiment of the utility model;

[0042] Fig.10 It is a schematic diagram of the local structure of the shaping mold in the shaping state disclosed in the embodiment of the utility model. DETAILED DESCRIPTION

[0043] The utility model discloses a shaping die for a deep groove ball bearing cage, which is used to shape the ball pocket of the deep groove ball bearing cage. In addition, the utility model also discloses a processing die having the shaping die for the deep groove ball bearing cage.

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0046] A bearing generally consists of four parts: an inner ring, an outer ring, rolling elements and a cage. The inner ring cooperates with the shaft and rotates with the shaft; the outer ring cooperates with the bearing seat and plays a supporting role; the rolling elements are evenly distributed between the inner and outer rings with the help of the cage, and their shape, size and number directly affect the performance and life of the rolling bearing; the cage, also known as the bearing cage or bearing retainer, refers to a bearing part that partially wraps all or part of the rolling elements and moves with them. It is used to isolate the rolling elements, enable the rolling elements to be evenly distributed along the circumference of the bearing and keep the rolling elements in the bearing, and usually guides the rolling elements to rotate for lubrication.

[0047] The shape of the cage of different types of bearings may vary, such as Figure 1 As shown, the cage used for deep groove ball bearings is generally called a wave-shaped cage, that is, a protrusion (or groove) is processed on the cage to form a ball pocket 101 for the rolling body. However, there may be processing differences in the shape of the ball pocket 101 after molding, or the shape of the ball pocket 101 may be inconsistent.

[0048] Combination Figure 2 As shown, the present application discloses a processing die for a deep groove ball bearing retainer, comprising a forming die 2, a shaping die 3 and a punching die 4.

[0049] Among them, the forming mold 2 is used to process the ball pocket 101 on the retaining frame 100 to be processed; the shaping mold 3 is used to shape the ball pocket 101 of the retaining frame 100 processed by the forming mold 2; and the punching mold 4 is used to punch the retaining frame 100 after being shaped by the shaping mold 3.

[0050] The forming die 2, shaping die 3 and punching die 4 in the present application are integrated on the same machine tool, and the same machine tool can be used to simultaneously perform forming, shaping and punching processes on different retaining frames, thereby improving processing efficiency while reducing the use of machine tools, which is beneficial to reducing costs.

[0051] Combination Figures 3 to 10 As shown, based on the above technical problems, the shaping mold of the deep groove ball bearing retainer disclosed in the present application includes: a shaping upper mold 32, a shaping lower mold 34 and a shaping core 33.

[0052] Among them, the shaping upper mold 32 has a first ball cavity 323; the shaping lower mold 34 has a second ball cavity 342, the first ball cavity 323 is opposite to the second ball cavity 342, and the first ball cavity 323 is used to accommodate the ball pocket 101 of the retaining frame 100, and the second ball cavity 342 is used to place the shaping ball 36 for shaping the ball pocket 101 of the retaining frame 100; the shaping core 33 is located inside the shaping lower mold 34, and the retaining frame 100 can be sleeved on the outside of the shaping core 33, and the position where the shaping core 33 contacts the second ball cavity 342 has a third ball cavity 333, and the shaping ball 36 is located in the space between the second ball cavity 342 and the third ball cavity 333.

[0053] The outer diameter of the shaping core 33 in the present application is the same as the inner diameter of the retainer 100 . After the retainer 100 is sleeved on the outer side of the shaping core 33 , the inner diameter of the retainer 100 is not affected during the shaping process of the retainer 100 .

[0054] After the shaping upper mold 32 moves toward the shaping lower mold 34, the first ball cavity 323 is opposite to the second ball cavity 342. Under the action of the extrusion force, the shaping ball 36 squeezes the ball pocket 101 of the retaining frame 100, so that the ball pocket 101 is limited between the shaping ball 36 and the first ball cavity 323, and the ball pocket 101 is shaped by the extrusion of the shaping ball 36 and the first ball cavity 323, thereby ensuring the consistency of the shape of the ball pocket 101.

[0055] In some embodiments, the second spherical cavity 342 is a hemispherical groove, and the diameter of the second spherical cavity 342 is equal to the diameter of the shaping ball 36. The third spherical cavity 333 is a circular arc groove, and the circular arc groove cooperates with the second spherical cavity 342 to limit the shaping ball 36 along the direction of the second spherical cavity 342 toward the axis of the shaping core 33, and the height of the third spherical cavity 333 along the direction of the axis of the shaping core 33 is greater than the radius of the shaping ball 36. The second spherical cavity 342 contacts the third spherical cavity 333, and the shaping ball 36 is limited in the second spherical cavity 342, but the height direction of the shaping ball 36 is not limited. The first ball cavity 323 is opposite to the second ball cavity 342, and the first ball cavity 323 is an arc groove, and the diameter of the first ball cavity 323 is larger than the diameter of the shaping ball 36, and can be set according to the thickness of the ball pocket 101 of the retaining frame 100. Optionally, the diameter of the first ball cavity 323 is the sum of the diameter of the shaping ball 36 and the thickness of the ball pocket 101.

[0056] The second spherical cavity 342, the third spherical cavity 333 and the first spherical cavity 323 cooperate to form a shaping space. The size and shape of the shaping space can be set according to different shaping needs and are all within the protection range.

[0057] In some embodiments, the shaping core 33 is located in the middle of the shaping lower die 34, and the axis of the shaping core 33, the axis of the shaping lower die 34 and the axis of the shaping upper die 32 coincide. Optionally, the shaping upper die 33, the shaping lower die 34 and the shaping core 33 are all cylindrical structures. It can be understood by those skilled in the art that the shapes of the shaping upper die 33 and the shaping lower die 34 can also be other shapes, as long as the first ball cavity 323 and the second ball cavity 342 are provided.

[0058] Combination Figure 8 and Fig. 9 In the illustrated embodiment, the shaping lower die 34 is a cylindrical structure, and a mounting hole 341 is provided in the middle, and a plurality of first ball cavities 323 are evenly provided along the circumferential direction on the end surface of one side close to the shaping upper die 32 .

[0059] The shaping core 33 includes: a first end 331 and a second end 332. The first end 331 protrudes from the shaping lower die 34, and a third ball cavity 333 is provided at the position where the first end 331 contacts the second ball cavity 342; the second end 332 is inserted into the mounting hole 341 of the shaping lower die 34, and the shaping core 33 and the shaping lower die 34 are detachably connected.

[0060] In some embodiments, the diameter of the first end 331 is greater than the diameter of the second end 332, and the second end 332 is matched with the mounting hole 341 of the shaping lower die 34. It should be noted that the matching connection method includes but is not limited to clearance fit. The step formed by the first end 331 and the second end 332 is axially limited with the shaping lower die 34. In some embodiments, the shaping ball 36 can also be bonded or welded in the second ball cavity 342.

[0061] Combination Figure 7 As shown, the shaping upper die 32 is a cylindrical structure, and the shaping upper die 32 has a positioning hole 321 on one side close to the shaping lower die 34, and the shaping core 33 can be inserted into the positioning hole 321. The edge of the positioning hole 321 is provided with a first ball cavity 323. The shaping upper die 32 has an assembly hole 322 on one side away from the shaping lower die 34, and the assembly hole 322 can facilitate the connection of the shaping upper die.

[0062] Since the first ball cavity 323 and the second ball cavity 342 are easily worn during the shaping process, based on this, in the present application, the shaping upper die 32 is detachably mounted on the upper die plate 11 of the machine tool, and the shaping lower die 34 is detachably mounted on the lower die plate 12 of the machine tool. At the same time, the shaping core 33 is detachably connected to the shaping lower die 34. The installation methods for the shaping upper die 32, the shaping core 33 and the shaping lower die 34 include but are not limited to screw connection.

[0063] See also Figures 3 to 5As shown, in the present application, the shaping upper die 32 is detachably fixed to the upper die plate 11 through the shaping upper die seat 31, and the shaping lower die 34 is detachably fixed to the lower die plate 12 through the shaping lower die seat 35. Among them, the shaping upper die seat 31 and the shaping lower die seat 35 can be cylindrical structures respectively, and the distance between the upper die plate 11 and the lower die plate 12 can be increased by setting the shaping upper die seat 31 and the shaping lower die seat 35.

[0064] Combination Figure 2 The shaping upper die 32, the upper die of the forming die 2 for processing the ball pocket 101 of the retaining frame 100, and the upper die of the punching die 4 for punching the retaining frame 100 are all integrated in the upper template 11, and the upper die of the forming die 2, the shaping upper die 32 and the upper die of the punching die 4 are arranged in sequence along the conveying direction of the retaining frame 100.

[0065] In addition, the present application also discloses a processing mold for a deep groove ball bearing retainer, including a shaping mold for the deep groove ball bearing retainer, wherein the shaping mold for the deep groove ball bearing retainer is the shaping mold for the deep groove ball bearing retainer disclosed in the above-mentioned embodiment. Therefore, the processing mold for the deep groove ball bearing retainer having the shaping mold for the deep groove ball bearing retainer also has all the above-mentioned technical effects, which will not be repeated here one by one.

[0066] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0067] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shaping die for a deep groove ball bearing cage, characterized in that: include: A shaping upper die, wherein the shaping upper die has a first ball cavity; A shaping lower mold, wherein the shaping lower mold has a second ball cavity, the first ball cavity is opposite to the second ball cavity, and the first ball cavity is used to accommodate the ball pocket of the retainer, and the second ball cavity is used to place a shaping ball for shaping the ball pocket of the retainer; A shaping core, wherein the shaping core is located inside the shaping lower mold, and a retaining frame can be sleeved on the outside of the shaping core, a third ball cavity is provided at a position where the shaping core contacts the second ball cavity, and the shaping ball is located in the space between the second ball cavity and the third ball cavity.

2. The shaping mold for the deep groove ball bearing cage according to claim 1, characterized in that: The shaping core is located in the middle of the shaping lower die, and the axis of the shaping core, the axis of the shaping lower die and the axis of the shaping upper die coincide with each other.

3. The shaping mold for the deep groove ball bearing cage according to claim 1, characterized in that: The first spherical cavity is a hemispherical groove, and the diameter of the first spherical cavity is equal to the diameter of the shaping ball; The third spherical cavity is a circular arc groove, the second spherical cavity is a circular arc groove, and the second spherical cavity, the third spherical cavity and the first spherical cavity cooperate to form a plastic space.

4. The shaping die for the deep groove ball bearing cage according to claim 3, characterized in that: The shaping core comprises: A first end, the first end protrudes from the shaping lower die, and the third ball cavity is provided at a position where the first end contacts the second ball cavity; The second end is inserted into the mounting hole of the shaping lower die, and the shaping core is detachably connected to the shaping lower die.

5. The shaping die for the deep groove ball bearing cage according to claim 4, characterized in that: The diameter of the first end is greater than the diameter of the second end, the second end is cooperatively connected with the mounting hole of the shaping lower die, and the step formed by the first end and the second end is axially limited with the shaping lower die.

6. The shaping die for the deep groove ball bearing cage according to claim 4, characterized in that: The shaping upper die has a positioning hole on one side close to the shaping lower die, the shaping core can be inserted into the positioning hole, and the first ball cavity is arranged at the edge of the positioning hole.

7. The shaping die for the deep groove ball bearing cage according to any one of claims 1 to 6, characterized in that: The shaping upper die is detachably mounted on the upper die plate of the machine tool; and / or, The shaping lower die is detachably mounted on the lower die plate of the machine tool; and / or, The shaping core is detachably connected to the shaping lower die.

8. The shaping die for the deep groove ball bearing cage according to claim 7, characterized in that: The shaping upper die, the upper die of the forming die for processing the ball pocket of the retaining frame, and the upper die of the punching die for punching the retaining frame are all integrated in the upper mold plate, and the upper die of the forming die, the shaping upper die, and the upper die of the punching die are arranged in sequence along the conveying direction of the retaining frame.

9. The shaping die for the deep groove ball bearing cage according to claim 7, characterized in that: The shaping upper die is detachably fixed to the upper die plate via a shaping upper die seat; And / or, the shaping lower die is detachably fixed to the lower die base via a shaping lower die base.

10. A processing mold for a deep groove ball bearing cage, characterized in that: It comprises a forming die, a shaping die and a punching die of a deep groove ball bearing cage integrated on the same machine tool, wherein the shaping die is the shaping die of the deep groove ball bearing cage as claimed in any one of claims 1 to 9.

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