CN218817705U

CN218817705U - High-precision small-curvature arc outer contour surface spherical ring

Info

Publication number: CN218817705U
Application number: CN202223076564.2U
Authority: CN
Inventors: 赵勇; 姜勇胜; 鲁旭
Original assignee: Hangzhou Ward Automotive Parts Manufacturing Co ltd
Current assignee: Hangzhou Ward Automotive Parts Manufacturing Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-04-07
Anticipated expiration: 2032-11-18

Abstract

The utility model relates to an automobile spare and accessory part technical field specifically is little camber circular arc outer profile surface ball ring of high accuracy, including the round pin axle in ball ring body and the three-forked section body, the ball ring body includes outer ball ring, and the external profile of outer ball ring is personally submitted little camber circular-arc, and the ball ring body still includes interior ball ring, and interior ball ring is installed in selling epaxial and interior ball ring and is located the inside of outer ball ring, is equipped with the kingpin in clearance and the clearance between interior ball ring and the outer ball ring. This little camber circular arc outer profile surface ball ring of high accuracy has following advantage: under the condition that the sizes of the ball rings are basically the same, larger torque can be transmitted; after the curvature is reduced, the angle between the outer spherical surface and the inner ball cage raceway is larger, so that abrasion is not easy to occur, and the service life of the ball ring is longer; the ball ring and the ball cage are matched more accurately, the gap is smaller, the time delay of torque transmission of the ball cage is reduced, and meanwhile, the impact of a vehicle on the ball ring during starting is reduced; the requirement on the size of the ball cage is reduced, and the production efficiency and the rejection rate of the ball cage are greatly improved.

Description

High-precision small-curvature arc outer contour surface spherical ring

Technical Field

The utility model relates to an automobile spare and accessory part technical field specifically is little camber circular arc outer profile surface ball ring of high accuracy.

Background

The ball ring (ball table) is an important part of the middle link of the automobile transmission system, is arranged on the three-fork universal joint and is matched with the driving shaft ball cage. The outer contour surface of the ball ring is matched with the raceway of the inner ball cage and stretches out and draws back in the raceway of the inner ball cage, so that large torque output by the gearbox is transmitted to the hub end, and the wheel is driven to rotate. Therefore, the high-precision small-curvature arc outer contour ball table is provided to transfer large torque, improve the transfer efficiency, reduce abrasion, enable the ball ring to move more flexibly in the inner ball cage raceway and meet the quality requirements of customers.

The traditional spherical ring has larger curvature of the circular arc design of the outer diameter, and the curvature is more than R20. There are the following problems in use: 1) The curvature is too large, the outer diameter surface of the ball ring and the inner raceway surface of the inner ball cage are difficult to be accurately matched, the clearance between the ball ring and the inner raceway surface of the inner ball cage is large, and time delay is easy to occur when the output torque of the gearbox is transmitted; 2) The curvature is too large, so that the matching surface is easy to wear when large torque is transmitted; 3) The curvature is too large and if a precise fit of the ball ring to the inner cage is to be achieved, then the inner cage raceway dimensional control must be good, which undoubtedly increases the difficulty of machining.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a little camber circular arc outer profile surface ball ring of high accuracy has solved the problem of proposing in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the ball ring body comprises an outer ball ring, the outer contour of the outer ball ring is in a small curvature arc shape, the ball ring body further comprises an inner ball ring, the inner ball ring is mounted on the pin shaft and located inside the outer ball ring, a gap is formed between the inner ball ring and the outer ball ring, a roller pin is arranged in the gap, and an oil inlet channel communicated with the gap is arranged in the outer ball ring and can dissipate heat of the roller pin.

Preferably, the outer contour of the outer spherical ring comprises an outer spherical surface and an extension surface, two ends of the outer spherical surface respectively extend to be connected with the extension surface, and a transition arc is arranged between the outer spherical surface and the extension surface.

Preferably, the curvature radius of the outer spherical surface is 8.027mm-8.077mm, the inclination angle of the extension surface is 35 degrees, and the radius of the transition circular arc is 1.5mm. The ball ring is processed by roller grinding, the symmetry is within 0.01, and the roughness is within 0.5 mm.

Preferably, the oil inlet channel is respectively positioned in the extension surfaces at two ends of the outer wall of the outer spherical surface.

Preferably, a clamp spring used for limiting and preventing the needle roller from falling off is arranged in the outer spherical ring.

Preferably, the top end of the pin shaft is provided with a limiting ring, and the limiting ring is used for preventing the inner ball ring from falling off.

The curvature is reduced, so that the ball ring can transmit larger torque, and meanwhile, the curvature of the outer diameter of the ball ring is reduced, and the time delay of the ball ring in torque transmission is greatly reduced under the condition of higher precision; after the curvature is reduced, the contact angle between the outer spherical surface and the raceway of the inner ball cage is larger, abrasion is not easy to occur, meanwhile, the requirement on the size of the raceway part of the inner ball cage is reduced, the size of the inner ball cage is easier to control, and the production efficiency of the ball cage is greatly improved.

This little camber circular arc outer profile surface ball ring of high accuracy has following advantage:

1. under the condition that the sizes of the ball rings are basically the same, larger torque can be transmitted;

2. after the curvature is reduced, the angle between the outer spherical surface and the inner ball cage raceway is larger, so that abrasion is not easy to occur, and the service life of the ball ring is longer;

3. the ball ring and the ball cage are matched more accurately, the gap is smaller, the time delay of torque transmission of the ball cage is reduced, and meanwhile, the impact of a vehicle on the ball ring during starting is reduced;

4. the requirement on the size of the ball cage is reduced, and the production efficiency and the rejection rate of the ball cage are greatly improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the modified outer table of the present invention;

fig. 3 is a schematic structural view of the outer table of the utility model before being modified.

In the figure: 1. a ball ring body; 2. a pin shaft; 3. an outer ball ring; 4. an inner ball ring; 5. rolling needles; 6. an oil inlet channel; 7. an outer spherical surface; 8. an extension plane; 9. a transition arc; 10. a clamp spring; 11. a limiting ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 3, the present invention provides a technical solution: high-precision small-curvature arc outer contour surface ball ring, including round pin axle 2 in ball ring body 1 and the three-forked section body, the top of round pin axle 2 is equipped with spacing collar 11 and this spacing collar 11 is used for playing the anticreep effect to interior ball ring 4, ball ring body 1 includes outer ball ring 3, be equipped with in the outer ball ring 3 and be used for carrying out spacing jump ring 10 of spacing anticreep to kingpin 5, the outside profile of outer ball ring 3 includes ectosphere 7 and extension face 8, the both ends of ectosphere 7 extend respectively to and extend face 8 and be connected to and be equipped with transition circular arc 9 between ectosphere 7 and the extension face 8, the radius of curvature of ectosphere 7 is 8.027mm-8.077mm, the inclination angle of extension face 8 is 35, the radius of transition circular arc 9 is 1.5mm, the outside profile of outer ball ring 3 is little camber, ball ring body 1 still includes interior ball ring 4, interior ball ring 4 is installed on round pin axle 2 and interior ball ring 4 is located the inside of outer ball ring 3, be equipped with the clearance and be equipped with the kingpin clearance and the outer ball ring 3 and be equipped with the oil feed channel 6 and can be linked together to the outer wall in the ectosphere 6 and the outer wall of extending face 6 respectively, the outer ball ring 6 is equipped with the heat dissipation channel that extends outside.

In the description of the present specification, the terms "connect", "install", "fix", "set", and the like are used in a broad sense, for example, the term "connect" may be a fixed connection or an indirect connection through intermediate components without affecting the relationship and technical effects of the components, or may be an integral connection or a partial connection, and as such, for a person skilled in the art, the specific meaning of the terms in the present invention or the present invention can be understood according to specific situations.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Little camber circular arc outer profile face ball of high accuracy, round pin axle (2) in ball body (1) and the three-fork joint body, its characterized in that: the ball ring comprises a ball ring body (1) and is characterized in that the ball ring body (1) comprises an outer ball ring (3), the outer contour of the outer ball ring (3) is arc-shaped with small curvature, the ball ring body (1) further comprises an inner ball ring (4), the inner ball ring (4) is mounted on a pin shaft (2), the inner ball ring (4) is located inside the outer ball ring (3), a gap is formed between the inner ball ring (4) and the outer ball ring (3), a roller pin (5) is arranged in the gap, an oil inlet channel (6) communicated with the gap is formed in the outer ball ring (3), and the roller pin (5) can be cooled.

2. The high accuracy small curvature circular arc outer contour surface spherical ring of claim 1, characterized in that: the outer contour of outer spherical ring (3) includes ectosphere (7) and extension face (8), the both ends of ectosphere (7) extend respectively to and extend face (8) and link to each other and ectosphere (7) and extend and be equipped with transition circular arc (9) between face (8).

3. The high accuracy low curvature circular arc outer contour surface spherical ring of claim 2, wherein: the curvature radius of the outer spherical surface (7) is 8.027mm-8.077mm, the inclination angle of the extension surface (8) is 35 degrees, and the radius of the transition circular arc (9) is 1.5mm.

4. The high accuracy low curvature circular arc outer contour surface spherical ring of claim 1, wherein: the oil inlet channels (6) are respectively positioned in the extension surfaces (8) at two ends of the outer wall of the outer spherical surface (7).

5. The high accuracy low curvature circular arc outer contour surface spherical ring of claim 1, wherein: and a clamp spring (10) used for limiting and preventing the rolling needle (5) from falling off is arranged in the outer ball ring (3).

6. The high accuracy small curvature circular arc outer contour surface spherical ring of claim 1, characterized in that: the top of round pin axle (2) is equipped with spacing collar (11) and this spacing collar (11) are used for playing the anticreep effect to interior ball ring (4).