CN209756633U

CN209756633U - Lightweight aluminum alloy wheel hub

Info

Publication number: CN209756633U
Application number: CN201920210656.4U
Authority: CN
Inventors: 陈柏辰; 王树强; 宗绪惠; 罗锦荣; 王前明
Original assignee: KunShan Liufeng Machinery Industry Co Ltd
Current assignee: KunShan Liufeng Machinery Industry Co Ltd
Priority date: 2019-01-23
Filing date: 2019-02-18
Publication date: 2019-12-10
Anticipated expiration: 2029-02-18
Also published as: CN109606009A

Abstract

The application relates to a lightweight aluminum alloy wheel hub, including quotation (1) that is the radiation claw form and encircleing the child ring (2) of quotation, child ring (2) inner circle with quotation (1) outer lane passes through friction stir welding and joins and forms and encircles the cavity of quotation (1), the intercommunication has on child ring (2) the through-hole of cavity (3). The utility model has the advantages that: manufacturing a whole-ring cavity for weight reduction and noise reduction by using a welding process between the tire ring and the disk surface; by applying friction stir welding, the welding of the ultrathin plate can be well realized, the bridging capacity is good, the requirement on assembly clearance is reduced, and the structural perfection of the cavity is ensured; the cavity utilizes the Helmholtz resonator principle, so that the noise of the vehicle can be reduced, and the driving comfort is improved.

Description

Lightweight aluminum alloy wheel hub

Technical Field

The application belongs to the technical field of wheels, and particularly relates to a light-weight aluminum alloy wheel hub.

Background

Common automobile hubs include steel hubs and aluminum alloy hubs. The steel hub has high strength and is commonly used for large trucks; however, the steel hub is heavy in weight and single in appearance, does not conform to the current low-carbon and fashionable concepts, and is gradually replaced by the aluminum alloy hub which is beneficial to light weight of the vehicle.

The fuel consumption of the automobile is in direct proportion to the total mass of the automobile, the weight of the whole automobile is reduced by 10%, the fuel efficiency can be improved by 6% -8%, and the fuel consumption can be reduced to 0.3-0.6 liter per hundred kilometers when the mass of the whole automobile is reduced by 100 kilograms. According to the planning of energy conservation and new energy automobile industry development (2012-2020), the energy conservation and emission reduction needs to reach the regulation of 5L/100Km in 2020. Therefore, each large automobile factory starts to improve the automobile products according to the fuel consumption value, and the main three target directions are respectively: new energy automobile, power assembly technique and vehicle lightweight. Among them, the light weight of vehicles has become a key factor for promoting the whole materials, manufacturing equipment and technical process for vehicles. The light weight of the vehicle is realized by optimizing parts on the basis of stable mechanical properties, and the light weight of automobile materials from widely applied aluminum alloys and magnesium alloys to carbon fiber composite materials considered as the most potential materials enters a new development era.

The material cost in the production and manufacture of the aluminum alloy wheel hub accounts for 50 percent of the total manufacturing cost, 8Kg of wheel hub is used, and each wheel hub is lightened by 0.2Kg, so the manufacturing cost can be reduced by 1 to 2 percent, namely the profit of an enterprise can be increased by 1 to 2 percent. The aluminum alloy wheel hub has the lightest weight of more than 9.0kg such as 20X 8.5J inches, and the lightest weight of more than 10kg in some cases.

In order to reduce the oil consumption of products, reduce the emission of carbon dioxide, improve the environment, improve the quality of life and improve the advanced technology and high-end market advantage of a company in response to energy conservation and emission reduction, the company researches and develops the light-weight aluminum alloy hub.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the light aluminum alloy hub is provided for solving the defects of weight reduction and noise reduction of the aluminum alloy hub caused by the existing process and design in the prior art.

The utility model provides a technical scheme that its technical problem adopted is:

The utility model provides a lightweight aluminum alloy wheel hub, is including the quotation that is radiation claw form and encircle the child ring of quotation, the child ring inner circle with the quotation outer lane passes through friction stir welding and joins and forms and encircle the cavity of quotation, have the intercommunication on the child ring the through-hole of cavity.

In one embodiment, a plurality of partition plates are arranged in the cavity to divide the cavity into a plurality of small separated cells.

In one embodiment, a tire pressure sensor is arranged in the cavity.

In one embodiment, the volume of the cavity is 550 cubic centimeters to 1100 cubic centimeters.

The utility model has the advantages that: manufacturing a whole-ring cavity for weight reduction and noise reduction by using a welding process between the tire ring and the disk surface; by applying friction stir welding, the welding of the ultrathin plate can be well realized, the bridging capacity is good, the requirement on assembly clearance is reduced, and the structural perfection of the cavity is ensured; the cavity utilizes the Helmholtz resonator principle, so that the noise of the vehicle can be reduced, and the driving comfort is improved.

Drawings

FIG. 1 is a schematic structural view of an aluminum alloy hub according to an embodiment of the present application.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

Referring to fig. 1, the embodiment of the utility model discloses a lightweight aluminum alloy wheel hub, including being quotation 1 of radiation claw shape and the child ring 2 of encircleing quotation 1, 1 outer lane of quotation is the ring, and the ring center is the center of rotation of quotation 1. The tyre ring 2 is in a circular ring shape, the outer ring of the tyre ring 2 is used for bearing a tyre, and the inner ring is connected with the outer ring of the disc surface 1. The disk surface 1 and the tire ring 2 are fixed by performing a part of welding process at the joint, thereby fixing the disk surface 1 and the tire ring 2. In order to reduce the material consumption and the overall weight of the aluminum alloy hub, the disk surface 1 and the tire ring 2 are welded by Friction Stir Welding (FSW) in the embodiment, a cavity 3 surrounding the disk surface 1 is formed through a joint, and the tire ring 2 is also provided with a through hole communicated with the cavity 3. It should be noted that, besides the weight reduction, the resonance frequency of the aluminum alloy hub can be controlled by designing the specification and the number of the cavities 3 due to the resonance (helmholtz resonance) phenomenon of the air in the cavity, so that the driving noise of the vehicle is reduced, and the driving comfort is improved.

in one embodiment, divider panels are provided within the cavity 3 to divide the cavity 3 into small compartments. The partition plates can be used as a design means for reducing noise by utilizing Helmholtz resonance, namely the through holes are used for changing the number and the positions of the partition plates so as to change the specification and the number of the cavities 3 to control the resonance frequency of the aluminum alloy hub. The design rules of the partition plates for hubs of different models can be obtained through routine experiments or calculation, and are not described in detail. In this embodiment, however, the partition has at least one, and correspondingly, it divides at least the above-mentioned cavity 3 into two smaller compartments, so as to achieve the effect of adjusting the resonance frequency of the hub.

In one embodiment, a tire pressure sensor is disposed in the cavity 3. The tire pressure sensor (TPMS) can automatically monitor various conditions of the tire in real time, and can provide effective safety guarantee for driving.

In one embodiment, repeated experiments show that the volume of the cavity 3 is 550-1100 cubic centimeters in order to achieve better weight reduction and noise reduction effects on the premise of ensuring the structural strength of the hub. In different embodiments, the volume of the cavity 3 may be 550 cubic centimeters or 800 cubic centimeters or 1100 cubic centimeters.

The embodiment of the utility model provides an in still disclose a manufacturing approach of lightweight aluminum alloy wheel hub, including following step: firstly, casting a disc surface 1 by using a low-pressure casting method; then, casting the bead ring 2 by a gravity cast metal method; then, heat-treating the tire ring 2 and the disk surface 1; then, welding the tire ring 2 and the disk surface 1 by friction stir welding, and finally forming the cavity 3; and finally, performing finish machining and drilling on the welded tire ring 2 and the disk surface 1. After further completing the drilling, tire mounting and noise testing, the tire mounted with the light aluminum alloy wheel hub of the embodiment is completed.

In one embodiment, the method for manufacturing the light-weight aluminum alloy hub further comprises the following steps: the bead ring 2 cast by the gravity cast metal method is corrected by a correction machine, and the bead ring 2 is preheated before the bead ring 2 and the disk surface 1 are welded by friction stir welding. The corrected tire ring 2 contributes to the accuracy and integrity of the subsequent process, and the corrected tire ring 2 needs to be preheated again for friction stir welding.

Through repeated tests, as for a 20-inch light-weight aluminum alloy hub developed by my department at present, the weight of the hub is about 13.83kg in the traditional design, and through the structural design, the weight of the hub is improved to 11.86kg (the weight is reduced by 1.97kg, namely 14.2%) through optimized processes such as spinning, FSW (tip welding) and the like, so that an excellent noise reduction effect (the noise reduction is about 40%) is obtained.

To sum up, the beneficial effects of the utility model are that: manufacturing a whole-ring cavity for weight reduction and noise reduction by using a welding process between the tire ring and the disk surface; by applying friction stir welding, the welding of the ultrathin plate can be well realized, the bridging capacity is good, the requirement on assembly clearance is reduced, and the structural perfection of the cavity is ensured; the cavity utilizes the Helmholtz resonator principle, so that the noise of the vehicle can be reduced, and the driving comfort is improved.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a lightweight aluminum alloy wheel hub, its characterized in that, including quotation (1) that is the radiation claw form and encircle child ring (2) of quotation, child ring (2) inner circle with quotation (1) outer lane passes through friction stir welding and joins and forms and encircles the cavity of quotation (1), have the intercommunication on child ring (2) the through-hole of cavity (3).

2. The lightweight aluminum alloy hub according to claim 1, wherein a plurality of partition plates are disposed in the cavity (3) to divide the cavity (3) into a plurality of small cells.

3. The lightweight aluminum alloy hub according to claim 1, wherein a tire pressure sensor is arranged in the cavity (3).

4. The lightweight aluminum alloy hub of claim 1, wherein the volume of the cavity (3) is 550-1100 cubic centimeters.