High-temperature-resistant long-life ball bearing cage

Abstract

The utility model provides a kind of high-temperature-resistant long-life ball bearing retainer, it is related to bearing retainer technical field, and it includes: hold frame body;The retainer body is annular structure, and ball hole is arranged in annular array shape on the inner wall of retainer body;Annular array shape is arranged in the through hole of the outer wall of retainer body, and the through hole is circular hole structure, and the through hole arranged in annular array shape is jointly composed of the heat dissipation structure of retainer body.Utilize nickel-based alloy high melting point (1300 DEG C above) and strong oxidation resistance, so that retainer is not easy to heat softening or oxidation corrosion failure under high temperature working condition (such as industrial kiln, aeroengine), directly prolongs the service life under high temperature environment;Through type circular through hole forms three-dimensional heat dissipation channel, cooperates the forced convection of lubricating medium (oil / gas), and internal heat is quickly taken away.For example in high-speed motor, airflow passes through through hole can make retainer temperature reduce 20%~30%, avoid local overheating to cause material failure.

Description

Technical Field

[0001] This utility model relates to the field of bearing cage technology, and in particular to a high-temperature resistant, long-life ball bearing cage. Background Technology

[0002] The bearing cage is an important component of rolling bearings. It is mainly used to separate the rolling elements (such as balls, rollers, etc.) to prevent them from contacting each other and causing friction. At the same time, it guides the rolling elements to be evenly distributed on the raceway to ensure stable operation of the bearing.

[0003] The existing cage heat dissipation structure is simple and cannot achieve multiple heat dissipation or expand the heat dissipation area, which affects the high temperature resistance and service life of the cage. Utility Model Content

[0004] This utility model relates to a high-temperature resistant, long-life ball bearing cage, which solves the problem that the existing cages have a single heat dissipation structure, cannot achieve multiple heat dissipation and expand the heat dissipation area, thus affecting the high-temperature resistance and service life of the cage.

[0005] This utility model provides a high-temperature resistant, long-life ball bearing cage, specifically including: a cage body; the cage body has an annular structure, and ball holes are arranged in an annular array on the inner wall of the cage body; through holes are arranged in an annular array on the outer wall of the cage body, and the through holes are circular holes. The annular array of through holes together form the heat dissipation structure of the cage body.

[0006] Furthermore, an auxiliary groove is provided on the inner wall of the retainer body, and the auxiliary groove is an annular groove structure.

[0007] Furthermore, the top surface of the retainer body is provided with a first groove in a ring array. The first groove is a semi-cylindrical groove structure and serves as an auxiliary heat dissipation structure for the retainer body.

[0008] Furthermore, the outer wall of the retainer body is provided with a second groove in a ring array. The second groove is a semi-cylindrical groove structure. The ring array of the second grooves together form a further heat dissipation structure for the retainer body.

[0009] Furthermore, the cage body is treated with tungsten carbide (WC) coating.

[0010] Furthermore, the cage body contains a nickel-based alloy.

[0011] This utility model provides a high-temperature resistant, long-life ball bearing cage, which has the following advantages:

[0012] This application utilizes the high melting point and strong oxidation resistance of nickel-based alloys to prevent the cage from failing due to thermal softening or oxidation corrosion under high-temperature conditions (such as industrial kilns and aero engines), directly extending its service life in high-temperature environments. The high strength and creep resistance of the alloy itself ensure that the cage maintains structural stability under high-temperature loads, avoiding ball jamming or bearing failure due to material deformation. The high-hardness corrosion-resistant barrier formed by the surface coating significantly reduces friction and wear between the cage and the balls and the external medium, reducing heat and material loss caused by wear, and indirectly improving high-temperature resistance.

[0013] This application utilizes a through-hole circular perforation to create a three-dimensional heat dissipation channel. Combined with forced convection of the lubricating medium (oil / air), this rapidly removes internal heat. For example, in high-speed motors, airflow through the perforation can reduce the cage temperature by 20%–30%, preventing localized overheating and material failure. The annular groove on the inner wall, by reducing the body thickness (e.g., by 15%–20%), shortens the heat conduction path, allowing internal heat to diffuse to the surface more quickly. Simultaneously, reducing the body mass decreases inertial frictional heat during movement, creating a dual effect of "heat reduction + heat conduction."

[0014] This application utilizes a ring-shaped array of fins through a semi-cylindrical first groove on the top surface and a second groove on the outer wall to increase the heat dissipation area by 30% to 50%. Similar to the principle of radiator fins, it enhances natural convection with air or forced convection of the lubricating medium, further reducing surface temperature. Precisely machined ball bearing holes optimize ball positioning accuracy (e.g., tolerance ±0.005mm) to reduce sliding friction between the balls and the cage, reducing heat generation at the source. Combined with the heat dissipation structure, this forms a closed loop of "less heat generation → faster heat dissipation," reducing the overall temperature rise by 15% to 25%. The synergistic effect of materials and structure increases the cage's lifespan in high-temperature environments by more than 50% compared to traditional designs, making it particularly suitable for scenarios requiring long-term continuous operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 A schematic diagram of the axial view of the high-temperature resistant, long-life ball bearing cage of this utility model is shown.

[0019] Figure 2 This shows a schematic diagram of the main structure of the high-temperature resistant, long-life ball bearing cage of this utility model;

[0020] Figure 3A top view of the high-temperature resistant, long-life ball bearing cage of this utility model is shown.

[0021] Figure 4 This diagram shows a split axial view of the high-temperature resistant, long-life ball bearing cage of this invention.

[0022] List of reference numerals

[0023] 1. Cage body; 101. Ball bearing hole; 102. Auxiliary groove; 103. Through hole; 104. First groove; 105. Second groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example 1: Please refer to Figures 1 to 4 :

[0026] This utility model proposes a high-temperature resistant, long-life ball bearing cage, comprising: a cage body 1; the cage body 1 has an annular structure, and ball holes 101 are arranged in an annular array on the inner wall of the cage body 1; through holes 103 are arranged in an annular array on the outer wall of the cage body 1, and the through holes 103 are circular holes. The annular array of through holes 103 together form the heat dissipation structure of the cage body 1. During use, the annular array of through holes 103 can achieve auxiliary heat dissipation of the cage body 1, thus ensuring the service life of the cage body 1.

[0027] An auxiliary groove 102 is provided on the inner wall of the cage body 1. The auxiliary groove 102 is an annular groove structure. During use, the thickness of the cage body 1 can be reduced through the auxiliary groove 102, thereby improving the heat dissipation efficiency and high temperature resistance of the cage body 1.

[0028] The top surface of the cage body 1 has a first groove 104 arranged in a ring array. The first groove 104 is a semi-cylindrical groove structure. The first groove 104 is an auxiliary heat dissipation structure of the cage body 1. During use, the heat dissipation area of ​​the cage body 1 can be expanded by the first groove 104 arranged in a ring array, thereby improving the high temperature resistance and service life of the cage body 1.

[0029] The cage body 1 has a second groove 105 arranged in a ring array on its outer wall. The second groove 105 is a semi-cylindrical groove structure. The second groove 105 arranged in a ring array together form a further heat dissipation structure for the cage body 1. During use, the heat dissipation area of ​​the cage body 1 can be further expanded by the second groove 105 arranged in a ring array, thus better realizing the heat dissipation of the cage body 1.

[0030] The cage body 1 is treated with tungsten carbide (WC) coating, which improves the corrosion resistance of the cage body 1 during use, thereby increasing the service life of the cage body 1.

[0031] Example 2, based on Example 1, such as Figures 1 to 4 The cage body 1 shown contains a nickel-based alloy, which improves the melting point and oxidation resistance of the cage body 1.

[0032] The working principle of this embodiment is as follows: When machining the ball bearing holes 101 on the inner wall of the cage body 1, CNC drilling or electrical discharge machining is used. CNC drilling controls the movement trajectory of the drill bit through programming, accurately drilling holes that meet the size requirements at the annular array position, ensuring the positional accuracy and diameter consistency of the ball bearing holes 101. Electrical discharge machining utilizes the principle of pulse discharge corrosion of metal, which is suitable for nickel-based alloys with high hardness. It can machine ball bearing holes 101 with complex shapes and high precision, and there is no cutting force during the machining process, avoiding material deformation. The auxiliary groove 102 is a ring-shaped groove structure, which is machined using CNC turning or milling. CNC turning cuts out the annular groove through the relative movement of the rotating workpiece and the fixed tool. CNC milling uses a rotating milling cutter to cut out the annular groove according to the programmed path in the cage body 1. The required auxiliary groove 102 is milled into the inner wall of the cage. By precisely controlling the tool path and cutting parameters, the depth, width and surface quality of the auxiliary groove 102 can be guaranteed, thus achieving the design requirement of reducing the thickness of the cage body 1. The through hole 103, the first groove 104 and the second groove 105 are machined. The through hole 103, the first groove 104 and the second groove 105 are all machined by CNC. The through hole 103 is precisely drilled in a ring array on the outer wall of the cage body 1 by CNC drilling to form a heat dissipation channel. The first groove 104 and the second groove 105 are semi-cylindrical groove structures, which are machined by CNC milling using a ball end mill. By programming and controlling the movement trajectory and cutting depth of the milling cutter, grooves that meet the design requirements are machined on the top surface and outer wall of the cage to achieve the purpose of expanding the heat dissipation area.

Claims

1. A high-temperature-resistant long-life ball bearing cage, characterized by, include: The cage body (1) is an annular structure. The inner wall of the cage body (1) is provided with ball bearing holes (101) arranged in an annular array. The outer wall of the cage body (1) is provided with through holes (103) arranged in an annular array. The through holes (103) are circular holes. The annular array of through holes (103) together form the heat dissipation structure of the cage body (1).

2. The high-temperature resistant, long-life ball bearing cage according to claim 1, characterized in that, An auxiliary groove (102) is provided on the inner wall of the cage body (1), and the auxiliary groove (102) is an annular groove structure.

3. The high-temperature resistant, long-life ball bearing cage according to claim 2, characterized in that, The top surface of the cage body (1) is provided with a first groove (104) in a ring array. The first groove (104) is a semi-cylindrical groove structure and serves as an auxiliary heat dissipation structure for the cage body (1).

4. The high-temperature resistant, long-life ball bearing cage according to claim 3, characterized in that, The outer wall of the retainer body (1) is provided with a second groove (105) in a ring array. The second groove (105) is a semi-cylindrical groove structure. The second groove (105) in the ring array together form a further heat dissipation structure of the retainer body (1).

5. A high-temperature resistant, long-life ball bearing cage according to claim 4, characterized in that, The cage body (1) is treated with tungsten carbide (WC) coating.

6. The high-temperature resistant, long-life ball bearing cage according to claim 5, characterized in that, The cage body (1) contains a nickel-based alloy.

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