RU2309053C1 - Vehicle wheel - Google Patents

Abstract

FIELD: plastic metal working.

SUBSTANCE: invention can be used at technological working of design of vehicle wheels optimum at manufacture of wheel blanks from light alloys by hot die forging. Wheel has hub, disk part and rim in form of solid of revolution limited from inner side in zone adjoining disk part by two surfaces of rotation with straight-line generatrixes, and with toroidal surfaces tangential, each, to one of surfaces of disk part and to one of said surfaces of rotation. Disk part is provided with ports limited by parts of surface of rotation in zone adjoining the rim. The last of indicated surfaces of rotation is made conical. Acute angles in plane passing through wheel axis between generatrix of said conical surface and each of straight-line generatrixes of two other said surfaces of rotation is less than acute angle between these two surfaces of rotation.

EFFECT: reduced to minimum mass of wheel.

4 cl, 4 dwg

Description

The present invention relates to the processing of metals by pressure and can be used in the technological development of wheel designs of vehicles, optimal in the manufacture of wheel blanks from light alloys by hot forging.

It is known a vehicle wheel containing a disk part and a rim articulated with it in the form of a body of revolution with a pair of variable shells adjacent to the disk part along the thickness axis of the wheel (Japanese Patent No. 2004,028,210, class B60B 21/02, publ. 2004).

The known wheel is made of light alloy casting.

A disadvantage of the known wheel is the large mass, since the cast structure does not provide optimal strength properties while minimizing the mass of the wheel.

It is known a vehicle wheel containing a hub, a disk part and a rim in the form of a body of revolution limited on the inside in the area adjacent to the disk part, by two rotation surfaces with rectilinear generators, as well as two toroidal surfaces tangentially each to one of the disk surfaces part and one of the aforementioned surfaces of rotation, while the disk part is made with windows, limited in the region adjacent to the rim of the parts of the surface of rotation (RF Patent No. 2077993, CL B60B 3/06, . Publ 27.04.97, Bulletin №12 -. Prototype).

The prototype wheel is made of light (aluminum) deformable alloy.

A disadvantage of the known wheel is, although less than that of a cast wheel, but, nevertheless, a large mass. When developing the design of the prototype wheel, the technological features of obtaining the wheel blank by hot forging with an optimal internal structure from the point of view of operational characteristics were not fully taken into account.

The proposed vehicle wheel comprises a hub, a disk part and a rim in the form of a body of revolution, bounded on the inside in the area adjacent to the disk part, by two rotation surfaces with rectilinear generators, as well as two toroidal surfaces, each tangent to one of the surfaces of the disk part and one of said surfaces of revolution.

The disk part is made with windows limited in parts of the surface of revolution adjacent to the rim zone.

The last of these surfaces of rotation is made conical.

In a plane passing through the axis of the wheel, the sharp angles between the generatrix of the said conical surface and each of the rectilinear generators of the other two mentioned surfaces of revolution are less than the acute angle between the generators of these two surfaces of revolution. In said plane, the generator of said conical surface can be either tangent to the generators of said toroidal surfaces, or parallel to the tangent to the generators of said toroidal surfaces and offset relative to that tangent to the side opposite to the rim.

Mentioned windows may be limited to ruled surfaces.

The proposed wheel is characterized in that the last of the mentioned surfaces of rotation is made conical. In a plane passing through the axis of the wheel, the sharp angles between the generatrix of the said conical surface and each of the rectilinear generators of the other two mentioned surfaces of revolution are less than the acute angle between the generators of these two surfaces of revolution.

The wheel may differ in that in said plane the generatrix of said conical surface is tangent to the generators of said toroidal surfaces. Or it may differ in that in the said plane the generatrix of the said conical surface is parallel to the tangent to the generators of the said toroidal surfaces and is offset relative to this tangent to the side opposite to the rim.

The wheel may differ in that said windows are delimited by ruled surfaces.

The technical result is minimizing the mass of the wheel. The optimal internal structure obtained in the manufacture of a wheel by hot forging methods is consistent with the rational shape of the wheel and makes it easier to provide the necessary strength. The geometric shape of the wheel is determined to a large extent by the features of its manufacturing technology.

The invention is illustrated by drawings, which show:

figure 1 - General view of the wheel;

figure 2 - section aa in figure 1;

figure 3 is a view of I in figure 2; option, where the generatrix of the conical surface is tangent to the generators of the toroidal surfaces;

figure 4 - the same option where the generatrix of the conical surface is offset relative to the tangent to the generatrix of the toroidal surfaces.

The wheel includes a hub 1, a rim 2 and a disk part 3 connecting the rim 2 with the hub 1. The rim 2 is made in the form of a body of revolution, limited from the inside in the area adjacent to the disk part 3, by two surfaces of revolution with rectilinear generatrices, respectively 4 5. These surfaces of the rim 2 are coupled to the disk part 3 by a pair of toroidal surfaces. A toroidal surface with a generatrix 6 having a radius R ₁ is tangent to the surface of the rim with a generatrix 4 and to the surface 8 of the disk part 3, and a toroidal surface with a generatrix 7 having a radius R ₂ is tangent to the surface of the rim with a generatrix 5 and to the disk surface 9 parts 3. The disk part 3 is made with windows 10, limited in parts adjacent to the rim 2 to the parts of the conical surface of revolution with generatrix 11. In a plane passing through the axis of the wheel, generators 4 and 5 intersect at an acute angle α, and with generatrix 11 according at sharp angles β and γ.

In the development of the wheel design, conditions must be provided:

α> β; α> γ; β> 0; γ> 0.

In one embodiment (figure 3) of the wheel structure, the generatrix 11 is tangent to the generators 6 and 7.

In another embodiment (Fig. 4) of the wheel construction, the generatrix 11 is parallel to the tangent "m" to the generatrices 6 and 7 and is offset relative to this tangent by the value "K" in the direction opposite to the rim 2. The windows 10 are limited by ruled surfaces 12, of which parts are parts conical surface with generatrix 11.

Example

An experimental automobile wheel 8.5 × 17 "in size was made of aluminum alloy" AB "(corresponds to alloy 6061). The mass of the experimental wheel is 7.3 kg. The mass of the known wheel from the same material is 7.9 kg.

The proposed wheel design allows to improve the operational characteristics of the vehicle, as well as to increase the efficiency of the manufacture of wheels.

Claims (4)

1. Wheel of a vehicle containing a hub, a disk part and a rim in the form of a body of revolution, limited on the inside in the area adjacent to the disk part, by two surfaces of revolution with rectilinear generators, as well as two toroidal surfaces tangent respectively to each of one of the surfaces the disk part and one of the mentioned surfaces of rotation, while the disk part is made with spokes, separated by windows, limited in the region adjacent to the rim by parts of the surface of rotation, distinguishing The fact that the last of the mentioned surfaces of rotation is made conical, while in the plane passing through the axis of the wheel, the sharp angles between the generatrix of the said conical surface and each of the rectilinear generators of the other two mentioned surfaces of rotation are less than the acute angle between the generators of these two surfaces of rotation . 2. The wheel according to claim 1, characterized in that in said plane the generatrix of said conical surface is tangent to the generators of said toroidal surfaces. 3. The wheel according to claim 1, characterized in that in the said plane the generatrix of the said conical surface is parallel to the tangent to the generators of the said toroidal surfaces and is offset relative to this tangent to the side opposite to the rim. 4. The wheel according to claim 1, characterized in that said windows are limited by ruled surfaces.

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