CN119795788A - A wheel structure and a wheel body construction method - Google Patents

Abstract

The invention discloses a wheel structure and a wheel body construction method, comprising a limit area which is positioned on the contact surface of a rim and a spoke; the distance from the rim and the spoke outside the limiting area to the center of the wheel is different from the distance from the rim and the spoke outside the limiting area to the center of the wheel. The method comprises the steps of rolling or spinning, performing multiple caliber adjustment on an original aluminum pipe to form a rim, placing a spoke in the rim, forming a fixed combination body on a contact surface by changing the structure or state of the spoke and the rim, and processing the rim and the spoke on the contact surface to form a limit area to finish secondary fixation. The special construction flow is used, the production efficiency is improved, the mechanical property of the product is ensured to be stable, the weight of the product is reduced in terms of materials, the construction steps are simplified in terms of working conditions, and the cost is saved.

Description

Wheel structure and wheel body construction method

Technical Field

The invention relates to the field of fire safety, in particular to a wheel structure and a wheel body construction method.

Background

Currently, the manufacturing method of aluminum alloy wheels mainly comprises three processes of casting, forging and spinning. The mechanical properties of the cast aluminum alloy wheel are relatively low, so that the cast aluminum alloy wheel is relatively heavy, and the lightweight requirement of the vehicle is not facilitated. In addition, the blanks of cast aluminum alloy wheels are processed in large amounts, typically in excess of 40%, resulting in significant material and energy consumption. The forged aluminum alloy wheel has high mechanical properties so that it is the lightest. However, the manufacturing process of forging aluminum alloy wheels is long, the production efficiency is low, and the machining amount is large, so that the production cost of the wheels is high. The process of spinning aluminum alloy wheels is generally to cast a thick spinning blank, then to perform powerful spinning on a rim at high temperature, and finally to manufacture wheels with relatively high rim performance and relatively thin rim thickness. However, the spoke portion of such wheels cannot be thinned by spin-hardening, and therefore the weight of the spin-formed aluminum alloy wheel is generally between that of the forged wheel and that of the cast wheel, and the manufacturing cost thereof is also between those two, which indirectly results in that the bonding strength between many wheel rims and spokes is not sufficiently stable if at low cost.

From the above description, it can be seen that the higher the mechanical properties, the lighter the weight of the wheel, and generally the higher the manufacturing cost, which greatly restricts the large-scale application of the lightweight aluminum alloy wheel. The invention aims to develop a novel aluminum alloy wheel which is light in weight and low in manufacturing cost, combines various processes such as casting, forging, spinning and the like, and is from the aspects of material characteristics and construction environment. The structural performance is enhanced by utilizing a plurality of special processes conforming to the structural configuration of the wheel while optimizing the construction flow, thereby promoting the large-scale application of the lightweight aluminum alloy wheel.

Disclosure of Invention

This section is intended to summarize some aspects of embodiments of the application and to briefly introduce some preferred embodiments, which may be simplified or omitted in this section, as well as the description abstract and the title of the application, to avoid obscuring the objects of this section, description abstract and the title of the application, which is not intended to limit the scope of this application.

The present invention has been made in view of the above and/or problems occurring in the prior art that the strength of the coupling between many wheel rims and spokes is not stable enough if at low cost.

Therefore, the technical problem to be solved by the invention is to design a novel aluminum alloy wheel which is light in weight and low in manufacturing cost.

In order to solve the technical problems, the invention provides the following technical scheme: a wheel structure comprising, a spacing area located on the rim and spoke contact surface;

the distance from the rim and the spoke to the center of the wheel is different from the distance from the rim and the spoke outside the limiting area in the limiting area.

As a preferable scheme of the wheel structure, the limit area is in a reverse buckle ring shape and is arranged on the contact surface;

the back-off depth of the limiting area is 1/5~2/5 of the thickness of the spoke.

As a preferable scheme of the wheel structure, the limit area is in a concave rectangle and is arranged on the contact surface;

The axial length of the limiting area is smaller than 1/6 of the circumference of the spoke;

the depth of the recess of the limit area is 1/3 of the thickness of the spoke on the contact surface.

As a preferable scheme of the wheel structure, the wheel rim is made of 6061 aluminum alloy;

The spoke is made of A356 aluminum alloy;

the distance from the contact surface to the center of the wheel is 181mm except the limiting area.

The invention has the beneficial effects that the main component structure of the wheel is formed preliminarily, the rim and the spoke have special structures, and the structural strength of the wheel is enhanced and complex procedures are avoided by the processing means of back-buckling or annular recessing and the selection of materials.

In view of the higher mechanical properties and lighter weight wheels, the higher manufacturing costs are generally, which greatly restricts the large-scale use of lightweight aluminum alloy wheels.

Therefore, the technical problem to be solved by the invention is to combine various processes such as casting, forging, spinning and the like, optimize the construction flow from the aspects of material characteristics and construction environment, and simultaneously strengthen the structural performance by utilizing a plurality of special processes conforming to the structural configuration of the wheel, thereby promoting the large-scale application of the lightweight aluminum alloy wheel.

In order to solve the technical problems, the invention also provides a wheel body construction method, which comprises the steps of carrying out multiple caliber adjustment on an original aluminum pipe through rolling or spinning to form the rim, wherein the wheel body comprises a wheel structure;

The spoke is arranged in the rim, and a fixed combination body is formed on the contact surface by changing the structure or state of the spoke and the rim;

And processing the rim and the spoke on the contact surface to form the limit area, so as to finish secondary fixation.

As a preferable scheme of the wheel body construction method, the invention comprises the steps that the raw aluminum pipe is subjected to a necking process through rolling equipment;

The raw aluminum pipe is subjected to flaring technology through spinning equipment;

the processed raw aluminum pipe forms the rim, and the rim and the spoke are matched with a first cylindrical surface;

The contact surface is a curved surface portion of the first cylindrical surface.

As a preferable scheme of the wheel body construction method, the wheel spoke is formed by a die casting process and is matched with the rim on a second cylindrical surface;

the contact surface is a curved surface portion of the second cylindrical surface.

As a preferable scheme of the wheel body construction method, the wheel rim is heated and kept at 100 ℃;

placing the spoke at normal temperature into the rim at 100 ℃;

And stopping heating, and after the rim returns to normal temperature, carrying out interference fixation on the spoke and the rim on the contact surface, thereby forming the fixed combination body.

As a preferred embodiment of the method for constructing a wheel according to the invention, in the region of the contact surface,

Reversing the annular path towards the spoke direction, wherein the depth is 1/5~2/5 of the thickness of the spoke;

The back-off position is arranged at the maximum curvature bending position of the outer wall of the spoke;

positioning and back-off are carried out on the positions, which are in contact with the back-off positions, on the rim;

and in the state of the fixed combination body, the positioning back-off is further processed to finish the fitting with the annular back-off.

As a preferred embodiment of the method for constructing a wheel according to the invention, in the region of the contact surface,

Carrying out flat groove depression on the rim and the spoke;

the axial length of the flat groove is smaller than 1/6 of the circumference of the spoke, and the concave depth is 1/3 of the thickness of the spoke.

As a preferred embodiment of the method for constructing a wheel according to the invention, in the region of the contact surface,

Friction welding is carried out on the rim and the spoke;

the diameter of the welding head is 5-10 mm;

the welding depth is 2/3 of the thickness of the spoke and the thickness of the rim.

As a preferable scheme of the wheel body construction method, the diameter of the first cylindrical surface is 362mm;

the diameter of the second cylindrical surface is 362.4mm;

the diameter of the first cylindrical surface is 362.7mm at the temperature of 100 ℃;

the axial length of the horizontal groove is smaller than 160mm.

The invention has the beneficial effects that the special construction flow is used, the production efficiency is improved, the mechanical property of the product is ensured to be stable, the weight of the product is reduced in terms of materials, the working condition is utilized in the process to simplify construction steps, and the cost is saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

Fig. 1 is a schematic diagram of a simplified model structure of a back-off limiting area of a wheel structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a recess-limiting region simplest model of a wheel structure according to an embodiment of the present invention;

FIG. 3 is a schematic side view of a wheel structure according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating the internal structure of a wheel body according to an embodiment of the present invention and a process thereof;

FIG. 5 is a schematic view illustrating the internal structure of a wheel body in a recessed state and a process according to an embodiment of the present invention;

FIG. 6 is a schematic view of an original aluminum pipe shrinking process of a wheel body construction method according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a flaring process of an original aluminum pipe for a wheel body construction method according to an embodiment of the present invention;

FIG. 8 is a schematic view of a rim and spoke bonding and fixing process for a method of constructing a wheel according to an embodiment of the present invention;

FIG. 9 is a schematic view of a back-off state fixing assembly according to an embodiment of the present invention;

FIG. 10 is a schematic view of a groove-state fixing assembly and a process thereof according to an embodiment of the present invention;

FIG. 11 is a schematic view illustrating the details of the friction welding process and the structure thereof of a wheel body construction method according to an embodiment of the present invention;

Fig. 12 is a schematic view of a friction welding structure state fixing assembly according to an embodiment of the present invention.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.

In the following detailed description of the embodiments of the present invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration only, and in which is shown by way of illustration only, and in which the scope of the invention is not limited for ease of illustration. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

Further still, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 3, the present embodiment provides a wheel structure, and the main adaptive structure of the technical scheme is that related components in the coupling range of the rim and the spoke include a limiting area 300, which is located on the contact surface between the rim 100 and the spoke 200, where the contact surface is actually the inner wall of the rim 100 disposed at the periphery, and the outer wall of the spoke 200 existing in the rim 100, where the inner wall and the outer wall are bonded and complete the axial and lateral limitation of the inner spoke 200 with the aid of some processing technologies or structural deformation. The limit area 300 is a machining point formed in the contact surface for strengthening the structural performance of the wheel, and the machining process is not limited and has various modes and process starting points;

In detail, the distances from the rim 100 and the spoke 200 outside the limiting area 300 to the center of the wheel are different in the limiting area 300, that is, the distance from the limiting area 300 to the center of the wheel is different from the non-limiting area, that is, the rim 100 and the spoke 200 in the range of the limiting area 300 are necessarily deformed. The deformation is a main means for adjusting the structural strength of the wheel, and the deformation is formed by a plurality of special processes on the premise of avoiding high cost.

Example 2

Referring to fig. 1 to 4 and 8, in a second embodiment of the present invention, the embodiment is based on the previous embodiment, and is different from the previous embodiment in that the limit area 300 is in a reverse ring shape and is placed on the contact surface, and both the rim 100 and the spoke 200 conform to the basic shape of the wheel, so that the reverse buckle is generated around the ring shape, the effect of the reverse buckle is generated, and the limitation of the generating effect is reflected in the depth depending on the position of the reverse buckle;

in detail, the undercut depth of the stopper 300 is 1/5~2/5 of the thickness of the spoke 200, and if it exceeds this range, it may cause the basic performance and mechanical strength of the wheel to be affected.

In general, the effect that the stop zone 300 reacts in this inverted state is to stop lateral movement of the web 200 within the rim 100, which well complements the risk of the web 200 becoming detached from the rim 100.

Example 3

Referring to fig. 1 to 5 and 10, in a third embodiment of the present invention, the present invention is based on the previous embodiment, and is different from the previous embodiment in that the limit area 300 is in a concave rectangle, and is placed on the contact surface, unlike the back-off mode in the front, the limit area 300 is adjusted to be a single existing area, and the purpose of structural reinforcement is achieved by small-scale adjustment without affecting the whole rim 100;

In detail, the axial length of the limiting area 300 is less than 1/6 of the circumference of the spoke 200, the axial length of the limiting area 300 is the longest side length of the concave rectangle, and if the length is too long, for example, exceeds the stress dispersion layout mode given by the texture of the spoke 200, the strength of the wheel and the technological difficulty in making the concave at the spoke 200 of the rim 100 are seriously not in accordance with the standard;

In detail, if the depth of the recess of the limit area 300 is 1/3 of the thickness of the spoke 200 on the contact surface, and if the depth exceeds 1/3 of the thickness of the spoke 200, the technological difficulty and the technological strength of the small-range area are not qualified in the same way as the above, the whole wheel structure can be crashed, the wall thickness of the spoke 200 is seriously affected by too deep recess, so that the possibility of local fracture is caused, and the wheel structure is damaged.

Example 4

Referring to fig. 1 to 3 and 5, a fourth embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in that a rim 100 is made of 6061 aluminum alloy;

the spoke 200 is made of A356 aluminum alloy;

The alloy materials of the two materials can meet the integral mechanical strength of the wheel.

The distance from the contact surface to the center of the wheel is 181mm except for the limiting area 300, that is, the contact surface is in the same circle range except for the limiting area 300.

Example 5

Referring to fig. 1 to 12, a fifth embodiment of the present invention provides a wheel body construction method, which is based on the previous embodiment, and is different from the previous embodiment in that the original aluminum tube a is subjected to multiple caliber adjustment by rolling or spinning to form a rim 100, and the prior art of the rim 100 is generally directly molded by a conventional casting process, and the molding mode has great limitation on material selection, high process difficulty and manufacturing cost, also forms a large amount of waste materials, and has great optimizable space;

therefore, firstly, the construction method of the rim 100 is optimized, and by setting the base material, the aluminum pipe a is formed by light machining, and then a reasonable rim structure is formed by rolling or spinning.

The spoke 200 is placed in the rim 100, the contact surface is changed to form a fixed combination S by changing the structure or state of the spoke and the rim 100, and after the rim 100 and the spoke 200 are formed into an assembled form, the combination is performed again, it should be noted that the promotion form of the combination state is not limited, and various modes are available;

the rim 100 and the spoke 200 on the contact surface are processed to form the limit area 300, and secondary fixing is completed, namely, the last limit area 300 is processed, but in the case of back-off, the process of the limit area 300 is not carried out at the last in the process, but is complementary to the formation of the fixing combination S, and is carried out simultaneously.

Example 6

Referring to fig. 1 to 9, a sixth embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in that the original aluminum tube a is subjected to a necking process by a rolling device a, the principle of the rolling device is very simple, the original aluminum tube a is directly sleeved on a concavely formed roller assembly, and then the concavely formed roller assembly on the outer side is used for conventional rolling to form a basic rim structure, and the rim diameters of each layer of rims with different radiuses are adjusted multiple times in the process until the specifications are met. The mode is more suitable for the lightweight material, is more efficient and stable, and avoids many defects of traditional casting;

The original aluminum pipe A can also be subjected to flaring process through spinning equipment b, and the two modes and effects are different from each other, but the spinning equipment b is respectively two different process schemes, the spinning equipment b is also simple, and the original aluminum pipe A with smaller caliber and higher thickness is sleeved on a spinning device, and is subjected to wall grinding continuously under the condition of high-speed rotation, so that the shape of the inner wall gradually forms the state required by the rim 100;

It should be noted that, in this embodiment, in combination with the dimensions and specifications required for the actual product, the following can be determined:

When the rolling forming is used, the length of the original aluminum pipe A is 235mm, the inner diameter is 392.4mm, and the outer diameter is 400mm;

When the spinning forming is used, the length of the original aluminum pipe A is 160mm, the inner diameter is 284mm, and the outer diameter is 300mm.

Further, the processed raw aluminum pipe A forms a rim 100 which is fitted to the first cylindrical surface with the spokes 200, and the contact surface is a curved surface portion of the first cylindrical surface. The two cylindrical surfaces are identical to the contact surface, but are more convenient for depth understanding in cooperation with fig. 8.

The spoke 200 is formed by a die casting process, and is matched with the rim 100 on the second cylindrical surface, and the contact surface is the curved surface part of the second cylindrical surface.

The spoke 200 is formed by a semi-solid die casting process in this embodiment, and the diameter dimension may be limited to 362.4mm, larger than the diameter of the contact surface, based on the product requirements, but the rim 100 may be embedded by some special processes.

Example 7

Referring to fig. 1 to 9, a seventh embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in that the rim 100 is heated and kept at 100 ℃, which causes the rim 100 to expand the overall structure under the influence of high temperature, and the stress trend can easily change the caliber of the structure under the structure formed by rolling or spinning.

In this embodiment, specifically, the diameter of the cylindrical surface curved surface portion (contact surface) of the rim 100 at 100 ℃ may reach 362.7mm. Wherein the linear thermal expansion size calculation formula is related to

ΔL=α·L₀·ΔT (1)

Wherein α=23×10 (-6)/° C is the linear thermal expansion coefficient of the aluminum alloy. Substituting the corresponding diameter gives that the rim 100 diameter at 100 ℃ can be expanded by 0.7mm.

Further, the spoke 200 at normal temperature is placed in the rim 100 at 100 ℃, and the diameter of the spoke 200 at the moment is 362.4mm, so that the spoke 200 can be placed in the rim 100 after heating;

After the rim 100 is restored to normal temperature, the diameter of the rim is restored to the original 362mm, the diameter of the spoke 200 is still 362.4mm, and excessive parts can form interference effect under the toughness of the structure, so that the spoke 200 is fixed with the rim 100 in an extremely strong and stable stress state, and after a certain time, the spoke is adapted to a pressure mode brought by interference, thereby forming the embedding of the structure, the stress state disappears, the high-strength structure is achieved, the efficiency can be extremely high, and the cost is also very low.

Example 8

Referring to fig. 1 to 9, an eighth embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in the contact surface range,

Reversing the annular path towards the direction of the spoke 200, wherein the depth is 1/5~2/5 of the thickness of the spoke 200;

The back-off position is located at the maximum curvature bend of the outer wall of the spoke 200, where the actual back-off position is given in addition to defining the back-off depth. Curvature bend herein refers to the corner formed closest to 90 ° in whichever direction the contact surface is taken as the base line, i.e., the corner where curvature bend is greatest. The position can maximally protect the structural strength of the whole fixed combination S, ensure the limit of the inner spoke 200, and simultaneously have the most efficiency, time saving and labor saving in the process.

Positioning back-off is carried out on the position, which is in contact with the back-off position, on the rim 100, and the positioning back-off is not required to be controlled according to the standard back-off depth, but the position is ensured to be correct;

In the state of the fixed combination S, the positioning back-off is further processed to finish the attachment with the annular back-off, that is, after the rim 100 is heated and the spoke 200 is embedded, the positioning back-off on the outer rim 100 is pressed under the state of attaching the positioning back-off and the spoke 200, at this time, the positioning back-off can be naturally attached to the formed back-off on the spoke 200, so that a lot of unnecessary working procedures are saved in the process, and the structural high strength is ensured not to be affected.

Example 9

Referring to fig. 1 to 10, a ninth embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in the contact surface range,

The rim 100 and the spoke 200 are depressed by the flat groove, namely the rectangular depression, but the specific shape is not limited to rectangle, and the flat groove can be used on the structure as long as the spoke 200 can be laterally limited, and the rectangle is a relatively common and relatively stable state from the view of the existing tool.

The axial length of the horizontal groove is less than 1/6 of the circumference of the spoke 200, and the depth of the recess is 1/3 of the thickness of the spoke 200, and the same is true as the rectangular recess. The axial length of the level groove is less than 160mm when combined with the actual product length.

Example 10

Referring to fig. 1 to 12, a tenth embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in the contact surface range,

The rim 100 and the spoke 200 are friction welded, and the friction welding can be used for carrying out abrasion welding on the connection part of the rim 100 and the spoke 200 through a welding head, so that the effect similar to that of the back-off state is achieved.

The step can be directly carried out under the condition that the heating interference is not involved, the high-strength connection state achieved by the interference fixation is finished, the axial limit of the spoke 200 given by the back-off is also finished, the friction welding is not strictly considered on the position, but the process requirement is higher, and the method is more suitable for manufacturing products requiring high precision and efficiency.

The welding depth is 2/3 of the thickness of the spoke 200 and the thickness of the rim 100, namely the welding process needs to completely weld the rim 100 and then weld the inner spoke 200 into a dent.

In general, the wheel is not limited to a certain state, and various states can be adopted and overlapped according to the product requirement.

The back-off process, the sinking process and the friction welding process can be independently applied to the product;

wherein, the process combination can also be formed into two modes of a back-off process, a recess process, a friction welding process and a recess process.

The existing back-off process, the sinking process or the combination thereof can be used for heating the rim in an interference fixing mode to strengthen the structural performance. The scheme has more variants and can be flexibly adjusted according to the needs.

It is important to note that the construction and arrangement of the application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present application. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present applications. Therefore, the application is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.

Claims (12)

1. A wheel structure comprises a rim (100) and a spoke (200), and is characterized by comprising,

A limit zone (300) located on the contact surface of the rim (100) and the spoke (200);

The distances from the rim (100) and the spoke (200) outside the limiting area (300) to the center of the wheel are different in the limiting area (300);

The shape of the limit areas (300) is changed according to the state change of the rim (100) and the spoke (200).

2. A wheel construction according to claim 1, wherein said spacing zone (300) is of inverted annular shape and is disposed on said contact surface;

The back-off depth of the limiting area (300) is 1/5~2/5 of the thickness of the spoke (200).

3. A wheel construction according to claim 1, wherein said spacing area (300) is in the shape of a concave rectangle, disposed on said contact surface;

the axial length of the limiting zone (300) is less than 1/6 of the circumference of the spoke (200);

The recess depth of the limiting area (300) is 1/3 of the thickness of the spoke (200) on the contact surface.

4. A wheel construction according to claim 2 or 3, wherein:

the rim (100) is made of 6061 aluminum alloy;

The spoke (200) is made of A356 aluminum alloy;

The distance from the contact surface to the center of the wheel is 181mm except the limiting area (300).

5. A method of casting a wheel, comprising:

The original aluminum pipe (A) is subjected to caliber adjustment for a plurality of times by rolling or spinning to form the rim (100);

Placing the spoke (200) in the rim (100) and forming a fixed combination (S) on the contact surface by changing the structure or state of the spoke and the rim;

and machining the rim (100) and the spoke (200) on the contact surface to form the limit area (300) so as to finish secondary fixation.

6. A method of constructing a wheel according to claim 5, wherein:

the original aluminum pipe (A) is subjected to a necking process through rolling equipment (a);

The raw aluminum pipe (A) is subjected to flaring technology through spinning equipment (b);

-the raw aluminium tube (a) being processed forms the rim (100) which cooperates with the spokes (200) to a first cylindrical surface;

The contact surface is a curved surface portion of the first cylindrical surface.

7. A wheel construction method according to claim 6, wherein the spoke (200) is formed by a die casting process, which cooperates with the rim (100) to a second cylindrical surface;

the contact surface is a curved surface portion of the second cylindrical surface.

8. A method of constructing a wheel according to claim 7, wherein:

heating and maintaining the rim (100) at 100 ℃;

-placing the spoke (200) at ambient temperature in the rim (100) at 100 ℃;

and stopping heating, and after the rim (100) is restored to normal temperature, carrying out interference fixation on the spoke (200) and the rim (100) on the contact surface, so as to form the fixed combination body (S).

9. A method for constructing a wheel according to any one of claims 5 to 8, wherein in the contact surface region,

Reversing the annular path towards the spoke (200), wherein the depth is 1/5~2/5 of the thickness of the spoke (200);

the back-off position is arranged at the maximum curvature bending position of the outer wall of the spoke (200);

positioning back-off is carried out on the position, which is in contact with the back-off position, on the rim (100);

And in the state of the fixed combination body (S), further processing the positioning back-off to finish the fitting with the annular back-off.

10. A method for constructing a wheel according to any one of claims 5 to 8, wherein in the contact surface region,

-Flat-channel-recessing the rim (100) and the spokes (200);

The axial length of the flat groove is smaller than 1/6 of the circumference of the spoke (200), and the concave depth is 1/3 of the thickness of the spoke (200).

11. A method for constructing a wheel according to any one of claims 5 to 8, wherein in the contact surface region,

-Friction welding the rim (100) and the spoke (200);

the diameter of the welding head is 5-10 mm;

The welding depth is 2/3 of the thickness of the spoke (200) and the thickness of the rim (100).

12. A method of constructing a wheel according to claim 7 or 8, wherein:

The diameter of the first cylindrical surface is 362mm;

the diameter of the second cylindrical surface is 362.4mm;

the diameter of the first cylindrical surface is 362.7mm at the temperature of 100 ℃;

the axial length of the horizontal groove is smaller than 160mm.