CN209869937U

CN209869937U - Wheel spoke

Info

Publication number: CN209869937U
Application number: CN201920163576.8U
Authority: CN
Inventors: 杨荣; 喻华平; 胡飞; 廖放心; 潘小雨; 王医锋
Original assignee: Dongfeng Motor Chassis Systems Co Ltd
Current assignee: Dongfeng Motor Chassis Systems Co Ltd
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2019-12-31
Anticipated expiration: 2029-01-30

Abstract

The present application provides a wheel spoke, comprising: the spinning device comprises a mounting surface positioned in the center and a spinning surface positioned on the periphery and forming a set angle with the mounting surface; a plurality of heat dissipation holes are formed in the spinning surface along the circumferential direction; and the intersection point position of two straight lines forming an angle of 45 degrees with the circumferential tangent of the spinning surface at the central point of the heat dissipation hole and the edge of the heat dissipation hole is provided with a whole circle of thickened parts according to the set width. The wheel spoke is provided with a whole circle of thickened parts according to a set width at the intersection point position of two straight lines which form an angle of 45 degrees with the circumferential tangent of the spinning surface at the central point of the heat dissipation hole and the edge of the heat dissipation hole in a targeted manner, so that the strength of the wheel spoke can be directly and effectively enhanced; because only set up the thickening portion in the weak position of intensity, in some optional schemes, still be equipped with whole circle attenuate position in the surplus position of intensity, make this scheme can control the whole quality of wheel spoke, improve wheel spoke wholeness ability.

Description

Wheel spoke

Technical Field

The application relates to the field of automobile wheel manufacturing, and particularly provides a wheel spoke.

Background

With the development and progress of society, automobiles become more and more popular in people's daily life. While the popularization of automobiles, people have higher and higher requirements on the performance of the automobiles. The safety and quality of the wheels which are used as the important parts under the spring of the automobile are very important for improving the performance of the whole automobile.

The automobile wheel comprises a spoke and a rim, and is connected with an automobile body through a hub. The wheel is divided into a spoke plate type and a spoke type according to the structure of the spoke, and the spoke plate type spoke is generally adopted in the conventional commercial vehicle. In order to ensure the heat dissipation performance of the whole automobile, reduce the overall quality of wheels and reduce the overall quality of the automobile, and further improve the dynamic performance of the automobile as much as possible, the spoke plate type spoke is required to be provided with heat dissipation holes. However, the heat dissipation holes are through hole structures, so that the strength of the heat dissipation holes is weakened, and the wheel is prone to failure from the heat dissipation holes in the service process. To prevent this, the heat-dissipating holes are usually thickened when the wheel is produced.

In the prior art, the strength of the wheel spoke heat dissipation holes is enhanced by integrally thickening the materials around the heat dissipation holes to form a boss. However, the method increases the thickness of all materials around the heat dissipation holes, greatly increases the overall quality of the spoke, and increases certain manufacturing cost due to the complex production process of the wheel corresponding to the spoke.

SUMMERY OF THE UTILITY MODEL

The application provides a wheel spoke and a corresponding wheel spoke production method thereof, and solves the problems that the quality of the wheel spoke can be greatly improved when the strength of a radiating hole is enhanced, and the existing wheel spoke production method is complex in process and high in manufacturing cost.

The present application provides a wheel spoke, comprising:

the spinning device comprises a mounting surface positioned in the center and a spinning surface positioned on the periphery and forming a set angle with the mounting surface; a plurality of heat dissipation holes are formed in the spinning surface along the circumferential direction;

and the intersection point position of two straight lines forming an angle of 45 degrees with the circumferential tangent of the spinning surface at the central point of the heat dissipation hole and the edge of the heat dissipation hole is set into a whole circle of thickened part according to the set width.

Optionally, the thickened portion is located on the outer surface and/or the inner surface of the spinning surface.

Optionally, the spinning surface is further provided with a whole circle of thinning part.

Optionally, the position of the thinning portion is located on the outer surface or the inner surface of the spinning surface.

Optionally, a center hole is arranged at the center of the mounting surface.

Optionally, the mounting surface is further provided with bolt holes, and the bolt holes are distributed around the central hole along the circumferential direction.

Optionally, the heat dissipation holes are circular or oval through holes.

Compared with the prior art, the method has the following advantages:

the application provides a wheel spoke is only in the intersection point position at two straight lines and louvre border that are 45 degrees angles with the spinning face circumference tangent line of louvre central point department, is provided with the thickening portion of whole circle according to setting for the width, can know by CAE simulation analysis to spoke structure moreover, and this place is spoke stress maximum position, and the wheel spoke is in use fatigue failure crack often originated the department. I.e., locations of weakness in the wheel spokes. This application is pointed ground and is set for the thickening portion that the width is provided with the whole circle in wheel spoke intensity weak point and not only can be direct, strengthen the intensity of this wheel spoke effectively, owing to only be provided with the thickening portion of whole circle in the weak position of intensity, makes the wheel spoke that this application provided can control the whole quality of wheel spoke, the increase of effectual reduction wheel spoke quality to the wholeness ability of wheel spoke has been improved.

In the wheel spoke according to the preferred embodiment of the present invention, the thickened portion may be selectively provided on the inner surface and/or the outer surface of the spinning surface. Thus, the position of the thickened part can be flexibly adjusted according to the specific requirements on the strength and the performance of the wheel spoke, so that the application range of the wheel spoke is wider.

In another preferred form of the wheel spoke according to the present application, the spinning surface is provided with a full-circle thinned portion at a position other than the position where the thickened portion is provided. Like this, can attenuate the material of the surplus position of wheel spoke intensity to reduce the weight of wheel spoke, make the car more lightweight, improve the dynamic nature of car, reduce fuel consumption, reduce pollution emission, and can not influence the intensity of wheel spoke.

In a wheel spoke according to still another preferred embodiment of the present invention, the thinned portion is provided on an outer surface or an inner surface of the spinning surface. Thus, the position of the thinning part can be flexibly adjusted according to the specific requirements on the strength and the performance of the wheel spoke, so that the application range of the wheel spoke is wider.

In another preferred embodiment of the wheel spoke according to the present invention, the heat dissipation holes are provided as circular or elliptical through holes. The selectivity of the appearance of the wheel spoke is increased, and the shape of the heat dissipation holes can be selectively adjusted according to different stress requirements of the wheel spoke.

Drawings

Fig. 1 is a schematic structural view of a wheel spoke according to a first embodiment of the present application.

FIG. 2 is a schematic view of spoke heat dissipation holes and their surrounding structures according to an embodiment of the present disclosure.

Fig. 3 is a production flow chart of a wheel spoke according to the second embodiment of the present application.

Fig. 4 is a flowchart of a spoke spinning method provided in the second embodiment of the present application.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit of this application and is therefore not limited to the specific implementations disclosed below.

Example one

The embodiment of the application provides a wheel spoke, the specific embodiment of wheel spoke is as follows:

the wheel disc provided by the present application is described below with reference to fig. 1 to 2.

Referring to fig. 1, a schematic diagram of a wheel spoke according to a first embodiment of the present application is shown. The wheel spoke that this application embodiment provided includes: a mounting surface 1 located at the center, and a spinning surface 2 located at the outer periphery and forming a set angle with the mounting surface 1. Wherein, a plurality of heat dissipation holes 3 are arranged on the spinning surface 2 along the circumferential direction.

The wheel web is an integral part of the wheel and forms a wheel whole together with the rim. In connecting the wheel disc to the rim, it is necessary to connect the outer surface 22 of the rim with the inner surface of the rim where the disc is mounted, and then to form the disc and the rim as a wheel unit by welding or by using a connecting member. For wheel spokes, the spokes may be classified into spoke type spokes and spoke type spokes according to the structure of the spokes. The wheel spokes provided in the embodiments of the present application are referred to as web spokes. In the first embodiment of the present application, a wheel spoke of a commercial vehicle is specifically taken as an example, and the wheel spoke provided in the present application is specifically described in detail, but of course, the wheel spoke provided in the present application may also be used as a wheel spoke of other types of vehicles, and is not limited herein.

The spoke plate is usually formed by spinning a steel plate material, and in order to improve the rigidity of the wheel spoke, the steel plate material is usually spun into various shapes. The wheel spoke in the first embodiment of the application is a wheel spoke integrated by a spoke mounting surface 1 and a spoke spinning surface 2 which are formed by spinning spoke round cakes at one time. Wherein, the mounting surface 1 is positioned at the center of the wheel spoke and is used for connecting the hub and the wheel, and the spinning surface 2 is positioned at the periphery and is used for connecting the wheel spoke and the wheel rim, thereby forming the whole wheel. The mounting surface 1 is of a circular structure with a certain radius, and the outer circle edge of the mounting surface is integrally connected with the inner circle edge of the spinning surface 2. Furthermore, in order to increase the rigidity of the wheel spoke, the spinning surface 2 needs to be spun into a variable cross section during spinning. At the same time, a certain angle is formed between the mounting surface 1 and the spinning surface 2, the angle is preset according to the size of the wheel and the stress condition of the wheel, and the mounting surface 1 at the center and the spinning surface 2 at the periphery are formed into the set angle in the spinning process.

When the wheel spoke is manufactured, in order to reduce the mass of a wheel and facilitate the heat dissipation of a brake, a plurality of heat dissipation holes 3 are formed in the spoke plate type spoke. The wheel spoke provided in the first embodiment of the application is provided with a plurality of heat dissipation holes 3 on the spinning surface 2 along the circumferential direction. The heat dissipation holes 3 are circular or oval through holes, and can be through holes in other shapes, and the specific shape of the heat dissipation holes 3 is not limited by the wheel spoke provided by the application. Set up louvre 3 for the through-hole of circular, oval or other forms optionally, can make the selectivity increase of wheel spoke outward appearance, when producing the wheel spoke, can also be according to the different atress demands of wheel spoke 3 shapes of selectively adjusting the louvre moreover. The wheel spokes in the first embodiment of the present application are preferably provided as circular through holes.

On the premise of not changing the strength grade of the wheel spoke material, the wheel spoke needs to be integrally thinned in order to realize the light weight of the wheel spoke. However, the thinning tends to reduce the overall rigidity of the wheel spoke, and in particular, the louvers 3 and the periphery thereof are liable to be deformed or cracked. At this time, in order to prevent such a situation, the heat dissipation holes 3 are thickened when the wheel spoke is manufactured. However, the entire periphery of the heat dissipation holes 3 is thickened, which results in an insignificant weight reduction effect of the wheel spoke, thereby affecting the weight reduction of the entire wheel spoke.

Referring to fig. 2, a schematic view of a spoke heat dissipation hole 3 and a peripheral structure thereof according to an embodiment of the present application is shown. The wheel spoke structure CAE (Computer Aided Engineering) is an approximate numerical analysis method for solving the problems of complex Engineering and product structural strength, rigidity, buckling stability, dynamic response, heat conduction, three-dimensional multi-body contact, analysis and calculation of mechanical properties such as elastoplasticity and the like and optimization design of structural properties and the like by Computer assistance, and the position of the wheel spoke with the highest stress and the weakest strength is the intersection point position 23 of two straight lines forming an angle of 45 degrees with the circumferential tangent of the spinning surface at the central point of the heat dissipation hole 3 and the edge of the heat dissipation hole 3 (hereinafter, the intersection point position is collectively referred to as the strength weak position), and the actual cracking of the wheel is generally caused by the fact that cracks appear at the intersection point position 23 of the two straight lines forming an angle of 45 degrees with the circumferential tangent of the spinning surface at the central point of the heat dissipation hole 3 and the edge of the heat dissipation hole 3 and the cracks are expanded. This embodiment is carrying out whole attenuate prerequisite with the wheel spoke, and the weak position of two intensity is provided with thickening portion 4 pointedly, need not all positions peripheral at louvre 3 all thicken. Thus, the strength of the wheel spoke can be directly and effectively enhanced, and the whole quality of the wheel spoke can be reduced due to the fact that the thickened part of the whole circle is arranged at the weak position of the strength, and the whole performance of the wheel spoke is improved. In addition, for all thickening the periphery of louvre 3, only set up the production technology that thickening portion 4 used at the weak position of wheel spoke intensity more simple and convenient.

The center points of the heat dissipation holes 3 with different shapes are different, and the centers of the heat dissipation holes 3 of the wheel spoke provided in the first embodiment of the present application are the centers of circles. The thickened portion 4 is provided in a complete circle, that is, the intersection position 23 of two straight lines forming an angle of 45 degrees with the circumferential tangent of the spinning surface at the central point of each heat dissipation hole 3 and the edge of the heat dissipation hole 3 is located in the thickened portion 4. The width of the thickened portion 4 is determined by the size of the spoke, the size of the heat dissipation hole 3, and the like.

When the thickened portion 4 is provided, it can optionally be provided on the inner surface 21 and/or the outer surface 22 of the spinning surface 2. That is, a thickened portion 4 is provided only on the inner surface 21 or the outer surface 22 of the spinning surface 2, or a thickened portion 4 is provided on both the inner surface 21 and the outer surface 22 of the spinning surface 2. Thus, the position of the thickened portion 4 can be flexibly adjusted according to specific requirements on the strength and performance of the wheel spoke, and the application range of the wheel spoke is wider.

The dynamic property of the automobile has a direct relationship with the overall quality of the automobile, so in order to improve the dynamic property of the automobile, the most direct method is to lighten the automobile as much as possible and reduce the overall quality of the automobile on the premise of ensuring the strength and the safety performance of the automobile. The mass reduction of the wheel serving as the whole vehicle unsprung rotating piece has a prominent contribution to the whole vehicle light weight. However, reducing the weight of the wheel without changing the strength grade of the raw material means that the thickness of the material needs to be reduced. The wheel spoke provided in the first embodiment of the present application further includes a whole-circle thinned portion 5 on the spinning surface 2, that is, the whole-circle thinned portion is arranged at a position (hereinafter, collectively referred to as a strength margin position) other than the thickened portion 4 on the spinning surface 2 of the wheel spoke, so that the quality of the wheel is reduced, the effect of reducing the weight of the entire vehicle is obtained, and the vehicle can reduce the fuel consumption and reduce the emission of pollutant gas from the vehicle.

The thickness reducing portions 5 may be provided at all of the strength surplus positions, or the thickness reducing portions 5 may be provided only at partial positions of the strength surplus positions. The strength surplus portions 5 may be provided on the outer surface 21 and/or the inner surface 22 of the spinning surface 2, like the thickened portions 4. Thus, the position of the thinning part can be flexibly adjusted according to the specific requirements on the strength and the performance of the wheel spoke, so that the application range of the wheel spoke is wider.

Referring to fig. 1 again, the wheel spoke is used for connecting a wheel and an automobile body, specifically, a center hole 6 is arranged at the center of the wheel spoke mounting surface 1, and then a hub can connect the wheel and the automobile body through the center hole 6. When connecting the hub to the wheel, the end portion of the hub is passed through the central hole 6, and the wheel is then fixed to the end of the hub by means of the spokes. At this time, the wheel spoke provided in the first embodiment of the present application is further provided with a plurality of bolt holes 7 on the mounting surface 1, and the bolt holes 7 are distributed around the center hole 6 along the circumferential direction. Thus, the spoke can be fixed at the end part of the hub by using the bolt, so that the connection between the wheel and the automobile body is realized.

Example two

In the above embodiments, a wheel spoke is provided, and correspondingly, the second embodiment of the present application provides a method for producing a wheel spoke. The method embodiment is used for producing the products in the product embodiment, and relevant points can be found in the partial description of the product embodiment.

The specific embodiment of the production method of the wheel spoke is as follows:

referring to fig. 3, a production flow chart of a wheel spoke provided in the second embodiment of the present application is shown. In the second embodiment of the present application, the production method of the wheel spoke is specifically described in detail by taking the production of a commercial automobile as an example, and the steps of the production method of the wheel spoke are as follows:

step S301: spinning the spoke round cake material into a spoke spinning part with the center as a mounting surface and the periphery as a spinning surface according to set parameters; in the spinning process, the spinning surface forms a thickened part with a whole circle of thickening at a designated position.

Specifically, the setting parameters need to be determined before the wheel disc is produced. That is, preset the relevant production parameters of the wheel spoke that have been set for according to the demand, like: the size and the thickness of the spoke round cake materials, the size and the area of a wheel spoke mounting surface and a spinning surface, a ground included angle between the mounting surface and the spinning surface, and the positions, the number, the shapes and the sizes of the heat dissipation holes, the central holes and the bolt holes. After the parameters of the heat dissipation holes are determined, intersection point positions of two straight lines which form an angle of 45 degrees with the circumferential tangent line of the spinning surface at the preset central point of the heat dissipation holes and the preset edge of the heat dissipation holes are further determined, and the thickened or thinned positions of the spokes are determined so as to determine the section shape of the spinning surface of the spokes. According to the production method of the wheel spoke provided by the embodiment of the application, the intersection point position of two tangent lines which are at an angle of 45 degrees with the preset heat dissipation hole center point on the circumference of the spinning surface and the preset heat dissipation hole edge is determined according to the preset heat dissipation hole position. Since the spinning is determined to be before and the heat dissipation holes are punched to be after, the intersection point position determined by the predetermined heat dissipation holes is referred to as a designated position here.

Referring to fig. 4, a flow chart of spoke spinning provided in the second embodiment of the present application is shown. After relevant production parameters of the wheel spoke are determined, the spoke spinning device 400 can be used for carrying out a powerful spinning process on the spoke round cake material 1. Specifically, before spinning, a tail spinning device 401 is used to press the spoke round cake 402 against and abut against a core mold 403, then a spinning wheel 404 is controlled to spin outwards from the middle of the spoke round cake 402, and simultaneously, the spun spoke round cake 402 is in a tensile stress state, and the non-spun part is in an unstressed state and flows along with the motion of the spinning wheel to the feeding direction. The core mold 403 is a mold having a wheel spoke shape set in advance according to the setting parameters of the wheel spoke. During spinning, the spinning wheel force is controlled to form a full circle of thickened portion at the designated position of the spinning surface of the spoke pie 402.

During spinning, the disc material 402 of the spoke, which is pressed against between the tail-spinning device 401 and the core mold 403, can rotate together with the core mold 403 when the spindle 405 of the machine tool of the spoke spinning device 400 drives the core mold 403 to rotate. When the spoke round cake material 402 and the core mold 403 rotate, the spinning wheel 404 is controlled to act on the spoke round cake material 402 to do three-dimensional profiling motion, and spinning on the spoke round cake material 402 can be completed according to set parameters. When the spoke round cake material 402 and the core mold 403 rotate in the circumferential direction, the spinning wheel 404 is controlled to move back and forth along the bed main shaft 405 according to a preset track and make a three-dimensional profiling motion, so that the spoke round cake material 402 can be spun into the shape of which the inner surface is the same as that of the core mold 403. When the spoke round cake material 402 and the core mould 403 rotate circumferentially, the spinning wheel 404 is controlled to be fixed and do three-dimensional profiling movement; or when the spoke circular cake material 402 and the core mold 403 simultaneously carry out axial rotation and axial rotation, the spinning wheel 404 is controlled to move back and forth at the same axial rotation speed as the core mold 403, and a three-dimensional profiling motion is carried out, so that the spoke circular cake material 402 can be ground, and the spoke circular cake material 402 can be spun and formed into the shape which is worn out at the set position and is the same as the core mold 403. In the grinding process, the spinning wheel 404 is further controlled to do three-dimensional profiling motion according to a set track, and thickened parts and thinned parts can be ground on the spoke cake 402.

In the second embodiment of the present application, before spinning, the determined relevant production parameters of the wheel spoke are input into the spoke spinning device 400, and then the spoke spinning device 400 is started to spin the spoke cake material into the spoke spinning part with the center being the mounting surface and the periphery being the spinning surface according to the set parameters, and the whole circle of thickened part can be formed on the spinning surface at the designated position.

In the spinning process, the step of forming the thickened portion of the whole circle on the spinning surface at the designated position includes the step of forming the thickened portion of the whole circle on the spinning surface at the designated position of the inner surface and/or the outer surface. Meanwhile, if the quality of the wheel spoke needs to be reduced, a whole circle of thinned thinning part can be formed on the spinning surface in the spinning process. Meanwhile, the step of forming the thinned portion in a full turn on the spinning surface includes the step of forming the thinned portion in a full turn on the spinning surface at a position other than the designated position on the inner surface and/or the outer surface.

After spinning is completed, the resulting spoke spun piece has the basic shape of a spoke of a wheel, and the wheel spoke includes: the mounting surface is positioned at the center, and the spinning surface is positioned at the periphery and forms a set angle with the mounting surface. After the spoke spin is formed, further processing of the spoke spin is required.

Step S302: and performing a punching process on the spoke spinning piece according to set parameters.

The punching process comprises the steps of punching heat dissipation holes on the spoke spinning piece, enabling a plurality of heat dissipation holes to be distributed on the spinning surface along the circumferential direction, and enabling intersection points of two straight lines forming an angle of 45 degrees with the circumferential tangent line of the spinning surface at the central point of each heat dissipation hole and the edges of the heat dissipation holes to coincide with the designated positions. The heat radiation holes are punched according to the heat radiation hole setting parameters set in advance in step S1, and the positions, sizes, shapes, and the like of the heat radiation holes are determined.

And punching the spoke spinning part according to the set parameters, and punching a center hole in the center of the mounting surface. The punching of the center hole is also performed based on the center hole setting parameters previously set in step S301, and the size, shape, and the like of the center hole are determined.

And punching the spoke spinning part according to set parameters, and punching bolt holes on the mounting surface, so that the bolt holes are distributed on the periphery of the central hole along the circumferential direction.

After the punching process is performed on the spinning and forming spoke spinning and pressing piece, the finished spoke can be obtained only through subsequent processing.

Step S303: and carrying out subsequent processing on the spoke spinning piece subjected to the punching procedure to obtain a finished spoke.

The step specifically comprises the step of obtaining a finished spoke through subsequent turning of the spoke spinning piece subjected to the punching process. Specifically, on a lathe, the shape and the size of the spoke spinning part subjected to the punching process are changed by utilizing the rotation motion of a workpiece and the linear motion or the curvilinear motion of a cutter, so that the spoke spinning part conforms to set parameters. The cutting energy of the turning process is mainly provided by the workpiece instead of the tool. Turning is the most basic and common cutting method and plays an important role in production. The turning is suitable for processing the rotary surface, most of workpieces with the rotary surface can be processed by a turning method, such as inner and outer cylindrical surfaces, inner and outer conical surfaces, end surfaces, grooves, threads, rotary forming surfaces and the like, and the used tool is mainly a turning tool.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that the scope of the present invention is not limited to the embodiments described above, and that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention.

Claims

1. A wheel spoke, comprising: the spinning device comprises a mounting surface positioned in the center and a spinning surface positioned on the periphery and forming a set angle with the mounting surface; a plurality of heat dissipation holes are formed in the spinning surface along the circumferential direction;

and the intersection point position of two straight lines forming an angle of 45 degrees with the circumferential tangent of the spinning surface at the central point of the heat dissipation hole and the edge of the heat dissipation hole is provided with a whole circle of thickened parts according to the set width.

2. A wheel spoke according to claim 1 in which the thickened portion is provided on the outer and/or inner surface of the spinning surface.

3. A wheel spoke according to claim 1 or claim 2 in which the spinning face is also provided with a full turn of reduced thickness.

4. A wheel spoke according to claim 3 in which the thinning is provided on the outer and/or inner surface of the spinning surface.

5. A wheel spoke according to claim 1 in which the mounting face is centrally provided with a central aperture.

6. A wheel spoke according to claim 5 in which the mounting surface is further provided with bolt holes distributed circumferentially around the central bore.

7. The wheel spoke according to claim 1, wherein the heat dissipation holes are circular or oval through holes.