Motor vehicle wheel and manufacture method thereof
The present invention relates to the motor vehicle wheel that links together and make by a plurality of parts, and the manufacture method of this motor vehicle wheel.
In the past, as accompanying drawing 5 and shown in, conventional motor vehicle wheel comprises 4 parts, and promptly an axle sleeve passing therein of axle 51, one are fixing and be connected a wheel hub 52, a series of spoke 53 on this axle sleeve 51, and one by this spoke 53 and wheel hub 52 bonded assembly wheel rims 54.Another kind of conventional motor vehicle wheel (not shown) comprises three parts, that is: axle sleeve 51, spoke 53 and one are by spoke 53 and axle sleeve 51 bonded assembly wheel rims 54.
The conventional motor vehicle wheel following four that comprises 4 parts: as shown in Figure 8, the outer end of the spoke 53 of compression moulding is welded on wheel rim 54 annular inner surfaces of roll-forming at zone " a " (see figure 5) point, flash butt welding connects then.Wheel hub 52 compression mouldings, axle sleeve 51 forging moldings, and on its axial opposed area " b ", " c " (see figure 6), using Metal-Inert Gas Welding on the roughwrought annular inner surface.Then; on the zone " d " of the full annular outside face of wheel hub 52, the annular outer surface Metal-Inert Gas Welding of the inner of spoke 53 and this spoke hub 52, further; this axle sleeve 51 and wheel hub 52 are by fine limit work, and elimination is produced the instability of thermal strain by welding process.
Above-mentioned manufacturing process is the motor vehicle wheel that is used for making accompanying drawing 7 three parts that are shown with.
This routine manufacturing process is time-consuming, because require the zone of the wheel of required weld strength, and promptly regional " b ", " c ", must axially weld on the relative direction, in addition, because heat is very big to the some effects of wheel in the welding process, they must eliminate the instability of thermal strain after welding process.
The object of the present invention is to provide a kind of motor vehicle wheel, it can reduce and make under cycle weld time keeping the tolerance that requires, and this is by reducing manufacturing step or simplifying manufacturing step and realize.
To achieve these goals, according to the invention provides a kind of motor vehicle wheel, it comprises wheel rim spoke and axle sleeve connecting assembly, this wheel rim and spoke have a join domain, this spoke and axle sleeve have a join domain, it is characterized in that each join domain is by apply laser beam face laser welding on predetermined independent direction.
Because each join domain is by applying the laser beam laser welding on the independent direction, it is short relatively to weld this join domain required time, this laser beam welding process has produced very little calorific effect in very limited zone, and causes the wheel of this welding not need fine limit work to eliminate thermal strain and proofread and correct inhomogeneous.Although because laser beam is applied to each join domain respectively on independent direction, the join domain of this welding can reach required mechanical strength level, can be reduced so make the required step of this motor vehicle wheel, and this step can be simplified.
The laser beam laser welding that the join domain of this spoke and axle sleeve is applied by the axis that is roughly parallel to motor vehicle wheel, the join domain of this wheel rim and spoke is by almost parallel or the laser beam laser welding that applies perpendicular to the axis of motor vehicle wheel.
The laser beam that applies in above-mentioned direction helps to keep required mechanical strength level, has also simplified laser beam welding process.
According to the present invention, a kind of manufacture method of motor vehicle wheel also is provided, it comprises the formation wheel rim, spoke and axle sleeve, this wheel rim of assembling in an assembling fixture, spoke and axle sleeve, and on stable independent direction, apply the step of the join domain of the join domain of laser welding wheel rim and spoke and spoke and axle sleeve.
Because this wheel rim, spoke and axle sleeve are placed in the assembling fixture, and with the said method welding, do not need to resemble and with different welded conditions it is placed at respectively in the used anchor clamps the conventional manufacture method, thus, this method has been simplified widely.
In said method, this assembling fixture is set to and keeps this wheel rim, spoke and axle sleeve fastening, and this moment, join domain was pressed together.
According to the present invention, a kind of motor vehicle wheel also is provided, it comprises the connecting assembly of wheel rim, spoke, wheel hub and axle sleeve, this wheel rim and spoke have a join domain, spoke and wheel hub have a join domain, wheel hub and axle sleeve have a join domain, it is characterized in that each join domain is by the laser beam laser welding that applies on predetermined independent direction.
The motor vehicle wheel of three parts as described, this spoke, wheel rim, axle sleeve are had required mechanical strength level ground to connect, and the welding relative time is shorter.The wheel of this welding does not need fine limit work to eliminate thermal strain and revise inhomogeneous.
The laser beam laser welding that the join domain of the join domain of each spoke and wheel hub and wheel hub and axle sleeve applies at the axis direction that is roughly parallel to motor vehicle wheel, and the join domain of each wheel rim and spoke is by in almost parallel or the laser beam laser welding that applies perpendicular to the motor vehicle wheel axis.
Laser beam applies with above-mentioned direction, is used to weld each join domain, helps to keep required mechanical temperature level, has also simplified this method, has wherein used LASER BEAM WELDING machinery.
A kind of method of making motor vehicle wheel is provided again in view of the above, comprise moulding wheel rim, spoke, wheel hub and axle sleeve, in assembling fixture, assemble wheel rim, spoke, wheel hub and axle sleeve and become a complete wheel shape, with the join domain and the wheel hub of the join domain of the laser beam laser welding wheel rim that applies with predetermined independent direction respectively and spoke, spoke and wheel hub and connect regional step being connected of axle sleeve.
Said method does not need each parts to be separately positioned in the used anchor clamps with different welded conditions, and this method is simplified widely thus.
In the method, this assembling fixture is set to and keeps this wheel rim, spoke, wheel hub and axle sleeve fastening, and this moment, join domain was pressed together.
Above and other objects of the present invention, details and advantage will become clear by the embodiment description taken together with the accompanying drawings.
Fig. 1 according to of the present invention, comprise four parts, be arranged on the motor vehicle wheel plan view in the assembling fixture;
Fig. 2 is the partial vertical cross section view of motor vehicle wheel shown in Figure 1;
Fig. 3 is the diagram of circuit that the motor vehicle wheel manufacture method of three parts is arranged according to the present invention;
Fig. 4 is the diagram of circuit that tetrameric motor vehicle wheel manufacture method is arranged according to the present invention;
Fig. 5 is the plan view that the conventional motor vehicle wheel of 4 parts is arranged, and it has represented the method for parts welding;
Fig. 6 is the partial vertical cross section view of conventional motor vehicle wheel shown in Figure 5;
Fig. 7 is the diagram of circuit that the conventional motor vehicle wheel manufacture method of three parts is arranged;
Fig. 8 is the diagram of circuit that tetrameric conventional motor vehicle wheel manufacture method is arranged.
Principle of the present invention is used to motor vehicle wheel, for example is used for the front-wheel and the trailing wheel of motor bike.Usually motorcycle front-wheel is made of three parts, and trailing wheel is by four parts.
Fig. 1 and 2 has represented to be arranged on four parts of the trailing wheel in the assembling fixture.One embodiment of the present of invention are described in detail with reference to the trailing wheel shown in Fig. 1,2 and 4.
This trailing wheel by label 1 whole sign, includes the axle sleeve 2 that a wheel passes in Fig. 1 and 2; The wheel hub 3 that the center fixation hole is arranged, the diameter in this hole roughly external diameter with axle sleeve 2 is identical; Have the spoke 4 of the roughly set square shape in center fixation hole, the diameter of this fixed orifice roughly external diameter with wheel hub 3 is identical; And annular outer surface bonded assembly wheel rim 5 with spoke 4.This wheel hub is fixed on the axle sleeve 2, and spoke 4 is fixed on the wheel hub 3.This axle sleeve 2, wheel hub 3, spoke 4 and wheel hub 5 are assembled into a complete wheel shape in assembling fixture, use then laser welding at their join domain with its weld together.
This assembling fixture 6 has a center shaft stock 6a who makes progress who is used to insert the hole of axle sleeve 2, and this center shaft stock 6a has a ring-shaped step that is used for support sleeve 2 lower surfaces.This assembling fixture 6 also has concentric and around axle sleeve frame equal angles three wheel hub frame 6b at interval with axle sleeve frame 6a, and this wheel hub frame 6b works to support the lower end of the outer circular edge of hub 3.
This assembling fixture 6 has 3 spoke frame 6c, and the footpath that they are positioned at wheel hub frame 6b is used to insert the hole 4a that determines on the spoke 4 to the outside, comes the lower surface against spoke 4.This assembling fixture 6 further has three wheel rim frame 6d, is positioned at radially outermost position, is used for against the lower end of wheel rim 5.
When this axle sleeve 2, wheel hub 3, spoke 4 and wheel rim 5 were placed in the assembling fixture 6, they were supported on axle sleeve frame 6a, wheel hub frame 6b, spoke frame 6c and wheel rim frame 6d respectively, and are set to the join domain closed contact.This axle sleeve frame 6a, wheel hub frame 6b, spoke frame 6c and wheel rim frame 6d have the upper end respectively, and they upwards do not exceed axle sleeve 2, wheel hub 3, spoke 4 and the wheel rim 5 that it supported.
Be arranged on axle sleeve 2 forging moldings in the assembling fixture 6, and its interior annular surface of fine limit work.This is arranged on wheel hub 3 and spoke 4 compression mouldings in the assembling fixture 6, and for moulding is arranged on axle sleeve 2, one metal sheets in the assembling fixture 6 by roll extrusion coiled cydariform then, its end is each other by the electric arc butt welding.These axle sleeve 2 not prtreatments, but prtreatment in initial manufacturing process.
After axle sleeve 2, wheel hub 1, spoke 4 and wheel rim 5 are arranged in the assembling fixture 6, laser beam applies on the direction of the axle that is roughly parallel to wheel 1 that Fig. 2 arrow is shown, thus axle sleeve 2, wheel hub 3, spoke 4 and wheel hub 5 laser welding are in the same place, particularly this wheel rim 5 and spoke 4 two solder joint place laser welding on each join domain.The join domain of spoke 4 and wheel hub 3 and wheel hub 3 and axle sleeve 2 is roughly along full annular face laser welding.Although because not along these join domains of full annular face laser welding, also can reach required mechanical strength level, so they can be in the limited area laser welding of full annular face.
In order to launch weld seam and to avoid the interference of laser beam, need apply laser beam on the bevelled direction a little at axis with wheel 1, because axle sleeve frame 6a, wheel hub frame 6b, the upper end of spoke frame 6c and wheel rim frame 6d does not project upwards the position of disturbing laser beam, not should be noted that the interference of avoiding between assembling fixture 6 and the laser beam.
Be used for the being approximately perpendicular to solder joint that wheel 1 axis is applied to the annular outer surface of wheel rim 5 that laser beam that wheel rim 5 and spoke 4 be welded to one another can be shown in Fig. 2 dotted arrow.
Fig. 4 has represented the manufacture method of the motor vehicle wheel 1 shown in Fig. 1 and 2.As shown in Figure 4, spoke 4 and wheel hub 3 compression mouldings, wheel rim 5 flow formings and flash butt welding connect, its interior annular surface of axle sleeve 2 forging moulding and fine limit work, they are dressed up complete wheel shape in assembling fixture 6, then the laser beam laser welding that applies with direction shown in Fig. 2 arrow.The join domain of these parts is simply by applying the laser welding of laser beam and improved required mechanical strength level in the independent direction in assembling fixture 6 one side.The laser welding of this join domain can be finished in about 10 seconds short relatively time, and this is 1/10th of a motor vehicle wheel conventional welding method required time partly.
According to said method, the part of motor vehicle wheel is the heat affecting of Stimulated Light welding not, and need not repair after laser welding thus or process and eliminate thermal strain.Especially, the drum of wheel hub 3 does not need finishing, and the neck bearing part of axle sleeve 2 does not need finishing, and this wheel does not need to revise inhomogeneous.The quantity of making the required step of this motor vehicle wheel thus is reduced or simplifies.
The conventional approach of making motor vehicle wheel has a large amount of steps, and the tolerance that needs thus carefully to guarantee each step reduces tolerance stack.Yet according to the present invention, do not need the method for this assurance tolerance, can guarantee tolerance, the step of parts promptly is set in assembling fixture because have only in the step.
The manufacturing that the trailing wheel that four parts are arranged has been described is described above, yet, the front-wheel that three parts are arranged is flow process as described in Figure 3, become the entire vehicle wheel shape by in assembling fixture, assembling spoke, wheel rim and axle sleeve, use the laser welding that applies laser from assembling fixture independent direction on one side then, and make simply.The step of these three parts of laser welding is similar to the laser welding step among Fig. 2, the wheel hub 3 that has wherein only saved and the weldering of spoke 4.
Though described most preferred embodiment of the present invention at this, be appreciated that the present invention can be transformed into other particular form not breaking away from inner characteristic, this embodiment is as being described in all directions explanation, rather than limits, scope of the present invention is described by claim, rather than aforementioned.