An angular contact ball bearing cage and angular contact ball bearing
By designing an outer guide ring and an inner guide ring structure on the cage of the angular contact ball bearing and coating it with a wear-resistant self-lubricating coating, the problems of cage whirling and vibration at high speeds are solved, achieving stable operation and extending service life.
Patent Information
- Application Number
- CN202522206696.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-10-20
AI Technical Summary
At high speeds or under high inertial forces, the cage of angular contact ball bearings is prone to whirling and vibration, leading to unstable operation, noise, and wear.
Design a cage for an angular contact ball bearing, which adopts an outer guide ring and an inner guide ring structure. The distance between the guide surface and the inner wall of the bearing outer ring is 0.1 to 0.5 mm. It is coated with a wear-resistant self-lubricating coating and has an oil groove to store lubricating oil to reduce friction.
It achieves stable rotation of the cage at high speeds, reduces vibration and noise, and extends service life.
Smart Images
Figure CN223609116U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bearing field especially relates to a kind of angular contact ball bearing retainer and angular contact ball bearing. BACKGROUND
[0002] Ball bearing is usually the outer guide of ball guide or retainer, inner guide;In the case of ball guide, the retainer is floatingly arranged on the ball, and in the case of high rotation speed, rapid acceleration or deceleration or high inertia force, the retainer is prone to tilt and swing (referred to as "retainer vortex"), resulting in unstable operation. Stable movement will generate vibration and noise, and cause unnecessary collision between the retainer and the ball or the ring, aggravating wear. Taking the outer guide scheme of the retainer as an example, the outer ring part of the retainer and the inner wall of the bearing outer ring keep a very small gap plane, which is called guide surface. The inner wall of the bearing outer ring is usually fixed in the bearing seat and does not move, which is equivalent to a fixed "track". The rotating retainer is guided by the structure of small gap between the guide surface and the track, just like a train running on the track. The structure of the retainer is limited from the outside, which can effectively suppress the vortex and vibration of the retainer. High stability means more reliable at high speed, more accurate movement and less vibration and noise. Designing an outer guide structure suitable for angular contact ball bearing is a technical problem to be solved at present. SUMMARY
[0003] The utility model aims at providing a kind of angular contact ball bearing retainer and angular contact ball bearing to solve or partially solve the above technical problems.
[0004] To achieve the above object, the utility model provides the following technical scheme:
[0005] A kind of angular contact ball bearing retainer, including circular table shaped frame body;Center hole is arranged on the frame body, and a plurality of pockets are arranged at equal intervals along the circumference of the frame body, the frame body includes large end and small end, the large end is provided with the outer guide ring extending outward, the small end is provided with the inner guide ring extending outward, the outer guide ring and the inner guide ring all include guide surface, the outer diameter of the outer guide ring is greater than the outer diameter of the large end, the outer diameter of the inner guide ring is greater than the outer diameter of the small end;A plurality of oil grooves are arranged at equal intervals along the circumference of the guide surface;The distance between the guide surface of the outer guide ring and the inner guide ring and the inner wall of the bearing outer ring is 0.1-0.5mm.
[0006] Preferably, the guide surface is coated with a wear-resistant self-lubricating coating, and the thickness of the wear-resistant self-lubricating coating is 1-5 μm.
[0007] Preferably, the wear-resistant self-lubricating coating is a chromium nitride coating or a Ta-C coating.
[0008] Preferably, the cross section of the oil groove is arc-shaped or trapezoidal.
[0009] Preferably, the width of the outer guide ring is 3-5mm.
[0010] Preferably, the width of the inner guide ring is 1-3mm.
[0011] Preferably, the material of the frame body is polyimide or brass.
[0012] The utility model also provides a kind of angular contact ball bearing, including the angular contact ball bearing retainer of the kind, including inner ring and outer ring, the cross section of the outer ring is L character, the inner wall of the outer ring is correspondingly provided with guide plane at outer guide ring and inner guide ring, the interval of the guide plane and outer guide ring and inner guide ring is 0.1-0.5mm.
[0013] The utility model has the advantages that: by outer guide structure, realize a stable bearing structure;Frame body inside and outside are all provided with guide surface, and structure is stable;Oil groove can store lubricating oil to reduce the friction between guide surface and outer ring;Wear-resistant self-lubricating coating can provide additional lubrication guarantee under starting or instantaneous oil shortage condition, to prolong service life. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the perspective view of angular contact ball bearing retainer;
[0015] Figure 2 It is the cross section part structure schematic view of bearing. DETAILED DESCRIPTION
[0016] The technical scheme of the utility model will be described in detail in combination with specific implementation.
[0017] In the description of the utility model, it needs to be explained that, the orientation or position relationship indicated by terms "inner", "outer", "upper", "lower", "horizontal" etc. are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying description, and not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as the limitation of the utility model.
[0018] As Figure 1 And Figure 2As shown, the utility model discloses a kind of angular contact ball bearing cage, including circular-truncated cone frame body 10, the material of frame body 10 is polyimide or brass. Center hole 12 is provided on frame body 10, and a plurality of pockets 16 for placing ball 14 are provided at equidistance along the circumferential direction of frame body 10. Frame body 10 includes large end 18 and small end 20, large end 18 is provided with outwardly extending outer guide ring 22, and small end 20 is provided with outwardly extending inner guide ring 24, and outer guide ring 22 and inner guide ring 24 both include guide surface 26, and guide surface 26 is a plane.
[0019] The outer diameter of outer guide ring 22 is greater than the outer diameter of large end 18, and the outer diameter of inner guide ring 24 is greater than the outer diameter of small end 20;A plurality of oil grooves 28 are provided at equidistance along the circumferential direction of guide surface 26, and the cross section of oil groove 28 is arc-shaped or trapezoidal. Lubricating oil in the bearing can be kept in oil groove 28, and in rotation, lubricating oil is conveniently continuously replenished between guide surface 26 and the inner wall of outer ring 32 to form lubrication.
[0020] Abrasion-resistant self-lubricating coating (not shown) is coated on guide surface 26, and the thickness of abrasion-resistant self-lubricating coating is 1-5 μm. Abrasion-resistant self-lubricating coating is chromium nitride coating or Ta-C coating;Ta-C coating is hydrogen-free diamond-like carbon (DLC) coating.
[0021] The width of outer guide ring 22 is 3-5 mm;The width of inner guide ring 24 is 1-3 mm.
[0022] The utility model discloses a kind of angular contact ball bearings, including inner ring 30, outer ring 32 and angular contact ball bearing cage, ball 14 is arranged in pocket 16;Inner ring 30 is arranged in center hole 12, and outer ring 32 is arranged outside frame body 10 to form bearing. The cross section of outer ring 32 and inner ring 30 is L-shaped, and the inner side of outer ring 32 is provided with two guide planes 34, and the distance between guide plane 34 and outer guide ring 22 and inner guide ring 24 is same and is 0.1-0.5 mm. In rotation, stable support is formed between guide surface 26 of outer guide ring 22 and inner guide ring 24 and guide plane 34, so that frame body 10 is stably rotated in outer ring 32.
[0023] The above-mentioned is only the embodiment of the utility model, and not therefore limit the patent range of the utility model, and equivalent structure or equivalent process transformation using the contents of the utility model specification and drawing, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.
Claims
1. A cage for an angular contact ball bearing, comprising a frustum-shaped cage body; characterized in that: The frame has a central hole and a plurality of pockets evenly spaced along its circumference. The frame includes a large end and a small end. The large end has an outwardly extending outer guide ring, and the small end has an outwardly extending inner guide ring. Both the outer and inner guide rings include guide surfaces. The outer diameter of the outer guide ring is larger than the outer diameter of the large end, and the outer diameter of the inner guide ring is larger than the outer diameter of the small end. A plurality of through oil grooves are evenly spaced along the circumference of the guide surfaces. The distance between the guide surfaces of the outer and inner guide rings and the inner wall of the bearing outer ring is 0.1~0.5mm.
2. The angular contact ball bearing cage according to claim 1, characterized in that, The guide surface is coated with a wear-resistant self-lubricating coating, the thickness of which is 1~5μm.
3. A cage for an angular contact ball bearing according to claim 2, characterized in that, The wear-resistant self-lubricating coating is a chromium nitride coating or a Ta-C coating.
4. The angular contact ball bearing cage according to claim 1, characterized in that, The cross-section of the oil tank is arc-shaped or trapezoidal.
5. A cage for an angular contact ball bearing according to claim 1, characterized in that, The width of the outer guide ring is 3~5mm.
6. A cage for an angular contact ball bearing according to claim 1, characterized in that, The width of the inner guide ring is 1~3mm.
7. A cage for an angular contact ball bearing according to claim 1, characterized in that, The frame is made of polyimide or brass.
8. An angular contact ball bearing, comprising an angular contact ball bearing cage according to any one of claims 1 to 7, characterized in that, It includes an inner ring and an outer ring. The outer ring has an L-shaped cross-section. A guide plane is provided on the inner wall of the outer ring corresponding to the outer guide ring and the inner guide ring. The distance between the guide plane and the outer guide ring and the inner guide ring is 0.1~0.5mm.