CN109109591A

CN109109591A - The split type V-type distance rod of aluminium alloy and its preparation process and agitating friction are welded method of completing the square

Info

Publication number: CN109109591A
Application number: CN201811006554.7A
Authority: CN
Inventors: 张花蕊; 张虎
Original assignee: Qingdao Navigational New Material Technology Co Ltd
Current assignee: Qingdao Navigational New Material Technology Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2019-01-01

Abstract

The invention discloses a kind of split type V-type distance rods of aluminium alloy, the distance rod material is aluminium alloy, preferred ingredient is Al-Cu alloy, Al-Si alloy, Al-Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, and the aluminium alloy of the micro-alloying elements such as Sr, La, Ce, Y, Sc, Er, Nb, B, Cr is added in above-mentioned acieral.The split type V-type distance rod of the aluminium alloy is made of casing, bulb and flexural pivot, and by casing connection between V-arrangement bulb and both ends bulb, flexural pivot is mounted in the through-hole of bulb；The neck of bulb is ellipse and the arc-shaped combination being combined, and improves bearing capacity.The aluminium alloy thrust rod bush and bulb are prepared using hot extrusion molding and/or forging molding.Aluminium alloy casing is assembled with bulb using friction welding (FW) or friction stir welding method.Gained distance rod of the invention can reach 40~70% compared to the distance rod weight loss effect of traditional steel material.

Description

The split type V-type distance rod of aluminium alloy and its preparation process are welded with agitating friction and match Method

Technical field

The present invention relates to automobile V-type distance rod more particularly to a kind of aluminium alloy lightweight distance rod and preparation method thereof, And the assembly method of distance rod.

Background technique

In face of the pressure of environmental protection and energy-saving and emission-reduction, automotive light weight technology has become the inevitable choice of Automobile Design update. In truck field, the gross mass of truck is the summation of carload lot and vehicle body from weight, and traffic law is to gross weight Amount is distinctly claimed, overweight not only to bring security risk but also traffic violation.Therefore as transportation environment wants vehicle The raising asked, in order to improve transportation profit, the lightweight of truck components has become problem in the urgent need to address.

Distance rod is one of the critical component of truck balanced suspension, air suspension, is divided into straight distance rod (or for I Shape distance rod) and V-type distance rod, in running car power transmission, limit, vibration isolation, play in terms of mitigate it is vital Effect.Generally, distance rod is made of casing, bulb and flexural pivot.

Most of bogie traveling road conditions are poor, loading conditions are poor, use environment is severe, vehicle use intensity is big, as outstanding Frame system plays the distance rod of key effect, and operating condition is complicated, is acted on by multi-load, is easy to cause fatigue damage.Mesh Forward thrust bar is generally steel or cast iron quality, such as 45 steel, 20 steel, 40Cr material, and weight is larger, and it is further to be unsatisfactory for automobile Light-weighted demand.Under the pressure of current energy conservation and environmental protection loss of weight, how on the basis of guaranteeing that distance rod service performance requires, Weight is reduced as far as possible, is realized the lightweight of distance rod, is of great significance to truck.There is part of the manufacturer to attempt at present By changing the structure design of steel material distance rod, for example, its partial structurtes is designed as it is hollow, but since material is constant, if Meter space is small, and light weight effect is unobvious, and local hollow structure increases moulding process difficulty and manufacturing cost, therefore cannot Widely promoted and applied.

Summary of the invention

For the problem of the big light weight effect difference of existing steel material distance rod weight, the object of the present invention is to provide a kind of new Type lightweight V-arrangement distance rod, the V-arrangement distance rod are made of aluminum alloy materials.In order to enable aluminum alloy to distance rod in running car Have receiving multi-load when power transmission, limit, vibration isolation, mitigation impact to act on and meet the ability of high fatigue life, the present invention couple Aluminium alloy distance rod has carried out structure design, and develops the casing of achievable distance rod high performance requirements and the processing work of bulb Skill and assembly technology, to obtain Novel lightweight distance rod of the invention.Bulb, V-arrangement bulb and casing are used and are forged into Type, extrusion forming preparation, are welded and match to bulb obtained, V-arrangement bulb and casing application friction welding (FW) or agitating friction, gained aluminium closes Golden distance rod not only has comparable bearing capacity, also farthest realizes light weight compared with traditional steel material distance rod Change, weight loss effect is up to 40~70%.

A kind of split type V-type distance rod of aluminium alloy of the invention, material are aluminium alloy, and preferred ingredient is Al-Cu system Alloy, Al-Si alloy, Al-Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, and in above-mentioned aluminium The aluminium alloy of the micro-alloying elements such as Sr, La, Ce, Y, Sc, Er, Nb, B, Cr is added in based alloy.

A kind of split type V-type distance rod of aluminium alloy of the invention, is made of, V-arrangement bulb and two casing, bulb and flexural pivot It holds between bulb by casing connection, flexural pivot is mounted in the through-hole of bulb；The split type V-type thrust bar body of aluminium alloy includes set Pipe, bulb；

A casing 1 is an integral molding structure part；

B casing 10 is an integral molding structure part；

The other end that an end face of A bulb 2A is A aperture end plates 2A3A, A bulb 2A is A macropore end plates 2A3B； BA linkage section 2A3 is connect with 1 one end of A casing by friction welding (FW)；The neck of A bulb 2A is equipped with A ellipse section 2A5 and A arc section 2A6；

The other end that an end face of B bulb 2B is B aperture end plates 2B3A, B bulb 2B is B macropore end plates 2B3B； BB linkage section 2B3 is connect with 10 other end of B casing by friction welding (FW)；The neck of B bulb 2B is equipped with B ellipse section 2B5 and B circular arc Section 2B6；

A bulb 2A is identical as the structure of B bulb 2B, and A bulb 2A and B bulb 2B is an integral molding structure part.

V-arrangement bulb 3 is equipped with A support arm 3A, B support arm 3B and C flexural pivot mounting base 3C；It is CA in the middle part of C flexural pivot mounting base 3C Through-hole 3C1, CC through-hole 3C1 is for placing a flexural pivot.The other end of A casing 1 is installed on A support arm 3A.It is equipped on B support arm 3B The other end of B casing 10.

Hot extrusion technique preparation can be used in the split type V-type distance rod of aluminium alloy of the invention, the steps include:

The hot extrusion molding technique of aluminium alloy casing:

101 steps prepare aluminium alloy according to target component, and aluminum alloy blank are heated to centainly in chamber type electric resistance furnace Temperature is simultaneously kept the temperature；

Extrusion die temperature is heated to certain temperature and keeps the temperature a period of time, blank is then carried out hot extrusion by 102 steps Press to the pieces of bar stock of required size；

Pieces of bar stock is processed into required hollow structure by punching or machining mode by 103 steps.

Aluminium alloy bulb and V-arrangement bulb use extrusion forming:

201 steps prepare aluminium alloy according to target component, according to the size of design size setting bulb blank, and by base Material is heated to certain temperature and is kept the temperature in chamber type electric resistance furnace；

Extrusion die temperature is heated to certain temperature and keeps the temperature a period of time by 202 steps；

The blank heated is quickly transferred in extrusion die by 203 steps, after punch-pin is contacted with blank, extruder with Suitable extruding rate carries out the forward extrusion of bulb, and bulb is squeezed into cavity；

Bulb is carried out secondary extrusion by 204 steps, to form designed shape, is then resetted punch-pin, by bulb from mould It is taken out in tool.

The split type V-type distance rod of aluminium alloy of the invention can be used extruding and be prepared with forging group technology, step Are as follows:

The hot extrusion molding technique of casing:

Extrusion die temperature is heated to certain temperature and keeps the temperature a period of time, blank is hot extruded by 102 steps For the pieces of bar stock of required size；

Bulb and V-arrangement bulb use forging molding process process are as follows:

211 steps prepare aluminium alloy according to certain proportion, according to the size of design size setting bulb blank, and will Blank heating is to certain temperature, and heat preservation is for a period of time；

212 steps execute pre- forging process, the bulb blank of heating are put into blocking lower die die cavity, forging equipment sliding block Blocking upper mold is driven to be molded fastly with certain speed movement with lower die, forging equipment clamping mechanism carries out mode locking after molding, Hereafter pressure mechanism drives jumping-up formed punch towards die inside squeeze bulb blank middle section, forms pre- forging；

213 steps execute finish-forging technique, pre- forging are put into finish-forging lower die die cavity, and forging equipment sliding block drives finish-forging Upper mold is molded with certain speed movement with lower die fastly, and forging equipment clamping mechanism carries out mode locking, finish-forging formed punch after molding Squeeze bulb blank again obtains whole rough forging.

The split type V-type distance rod of aluminium alloy of the invention can be used agitating friction weldering and be assembled comprising have following step It is rapid:

Bulb, V-arrangement bulb and casing connection position are processed into and the same wall thickness of casing by installation step A according to design size Pipe structure；

Bulb, V-arrangement bulb and casing are fixed on numerical control friction stir welding machine welding fixture special by installation step B；

Installation step C sets friction stir welding machine mixing needle revolving speed and weldering speed；

Installation step D, starts friction stir welding machine, and mixing needle protrudes into bulb, V-arrangement bulb and casing while rotating In seam, the mixing needle shaft shoulder is plasticized aluminum alloy heat to be welded with bulb and sleeve surface friction-stir heat, and revolves in stirring-head Turn under draw, shifted from the front to the back around stirring-head, realizes the solid diffusivity of bulb, V-arrangement bulb and casing；

Installation step E, distance rod unclamp fixture after being welded successfully, take out distance rod, and size, crack defect inspection are carried out to it It surveys.

The split type V-type distance rod of aluminium alloy of the invention can be used friction welding method and be assembled comprising have following step It is rapid:

The pipe structure slightly thicker than casing is processed into bulb, V-arrangement bulb and casing connection position by installation step one；

Bulb, V-arrangement bulb are fixed on friction-welding machine power spindle, step up to cover using special fixture by installation step two Pipe；

Installation step three works out the PLC control program of friction welding apparatus, sets 1 grade of friction pressure, 1 grade of fraction time, and 2 Grade friction pressure, 2 grades of fraction times, the welding conditions such as friction-welding machine revolving speed；

Installation step four starts friction-welding machine, and bulb is made high speed rotation and to move closer to casing along slide plate on power head, Frictional heat generation when casing is contacted using bulb high speed rotation, enables aluminum alloy to soften, while being applied centainly on power spindle head Upsetting force, control upset time, bulb, V-arrangement bulb and casing made to realize solid diffusivity；

Installation step five, distance rod unclamp fixture after being welded successfully, take out distance rod, carry out size, crack defect to it Detection.

The present invention has the advantages that

1. the distance rod is aluminum alloy material, preferred component can be Al-Cu alloy, Al-Si alloy, Al- Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, and in above-mentioned acieral add Sr, La, The aluminium alloy of the micro-alloying elements such as Ce, Y, Sc, Er, Nb, B, Cr stretches by force compared to the distance rod of steel material meeting Under conditions of the service performances such as degree, fatigue strength, weight loss effect can reach 40~70%；And aluminium alloy distance rod ingredient is easy control System.

2. the structure of the aluminium alloy distance rod not only ensure that the high-performance of distance rod but also realize lightweight, and designed Structure be easy preparation, the aluminium alloy distance rod intensity of this kind of structure of gained is high, under the conditions of 200~300KN high loading stress Nothing pulls and breakoff phenomenon, can meet performance requirement high when distance rod practical application.

3. the distance rod is split type aluminium alloy distance rod, bulb, V-arrangement bulb and casing can be used and be forged into A variety of preparation processes such as type, extrusion forming, gained distance rod performance is high, and high yield rate.

4. aluminium alloy bulb, V-arrangement bulb and casing can be rapidly completed and be pushed away by friction welding (FW) or agitating friction weldering connection The end of power bar and the precise riveting of casing, not only ensure that riveting quality but also had improved work efficiency.

Detailed description of the invention

Fig. 1 is the structure chart of the rubbed V-type distance rod after matching that is welded of the present invention.

Figure 1A is another viewing angle constructions figure of the rubbed V-type distance rod after matching that is welded of the present invention.

Figure 1B is the facing structure figure of V-type distance rod of the present invention.

Fig. 1 C is the rearview of Figure 1B.

Fig. 1 D is the top view of Figure 1B.

Fig. 1 E is the bottom view of Figure 1B.

Fig. 1 F is the left view of Figure 1B.

Fig. 1 G is the right view of Figure 1B.

Fig. 2 is the structure chart using V-arrangement bulb of the present invention made from forging technology.

Fig. 2A is another viewing angle constructions figure using V-arrangement bulb of the present invention made from forging technology.

Fig. 2 B is the front view using V-arrangement bulb of the present invention made from forging technology.

Fig. 3 is the front view of middle sleeve of the present invention.

Fig. 3 A is the right view of Fig. 3.

Fig. 3 B is the LOOK RIGHT structure chart of middle sleeve of the present invention.

Fig. 3 C is the LOOK LEFT structure chart of middle sleeve of the present invention.

Fig. 3 D is another structural casing structure chart in the present invention.

Fig. 3 E is another another viewing angle constructions figure of structural casing in the present invention.

Fig. 4 is the front view using bulb of the present invention made from forging technology.

Fig. 4 A is the rearview of Fig. 4.

Fig. 4 B is the right view of Fig. 4.

Fig. 4 C is the left view of Fig. 4.

Fig. 4 D is the structure chart of bulb of the present invention.

Fig. 4 E is another viewing angle constructions figure of bulb of the present invention.

Fig. 4 F is the structural design drawing of bulb of the present invention.

Fig. 5 is the structure chart using another bulb of the present invention made from forging technology.

Fig. 6 is the mechanical property figure of distance rod in specific embodiment 1.

1. casing	1A.A through-hole	2A.A bulb
			2A2.BA through-hole	2A3.BA linkage section	2A3-1. upper profile sideline
2A3-2. bottom profiled sideline	2A3-3. left profile sideline	2A3-4. right wheel exterior feature sideline
			2A3A.A tapered panel	2A3B.A round panel	2A4.BA inner convex platform
2A5.A ellipse section	2A6.A arc section	2B.B bulb
			2B2.BB through-hole	2B3.BB linkage section	2B3A.B tapered panel
2B3B.B round panel	2B5.B ellipse section	2B6.B arc section
			3.V shape bulb	3A.A support arm	3B.B support arm
3C.C flexural pivot mounting base	3C1.CA through-hole	4.C bulb
			41. extension rod	42.D through-hole	43.C flexural pivot mounting base
45.C ellipse section	46.C arc section

Specific embodiment

Below in conjunction with drawings and examples, the present invention is described in further detail.

First part, the target component of aluminium alloy distance rod

In the present invention, the material of aluminium alloy V-arrangement distance rod be aluminium alloy, preferred component can be Al-Cu alloy, Al-Si alloy, Al-Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, and closed in above-mentioned aluminium base The aluminium alloy of the micro-alloying elements such as Sr, La, Ce, Y, Sc, Er, Nb, B, Cr is added in gold.

Preferred distance rod ingredient one are as follows:

Element	Dosage (mass percent, wt%)
		Si	0.1~1.5
Mg	0.4~2.0
		Fe	0.06~1.6
Cu	2.5~7.0
		Mn	0.2~1.2
Cr	0.001~0.15
		Ni	0.001~1.2
Zn	0.10~0.30
		Ti	0.01~0.20
Zr	0.001~0.25
		Sr	≤0.03
La	≤0.03
		Ce	≤0.03
Y	≤0.1
		Er	≤0.05
Sc	≤0.05
		Al	Surplus and inevitable impurity.

Preferred distance rod ingredient two are as follows:

Element	Dosage (mass percent, wt%)
		Si	4.5~13.5
Mg	0.05~0.8
		Fe	0.5~1.5
Cu	0.2~1.5
		Mn	0.05~0.6
Cr	0.001~0.2
		Ni	0.001~1.25
Zn	0.05~0.30
		Ti	0.01~0.25
Zr	0.001~0.05
		Sr	0.01~0.15
La	≤0.03
		Ce	≤0.03
Y	≤0.1
		Er	≤0.05
Sc	≤0.05
		Al	Surplus and inevitable impurity.

Preferred distance rod ingredient three are as follows:

Element	Dosage (mass percent, wt%)
		Si	0.2~1.8
Mg	0.3~1.2
		Fe	0.1~0.8
Cu	0.1~0.4
		Mn	0.3~1.2
Cr	0.04~0.35
		Zn	0.10~0.30
Ti	0.01~0.20
		Zr	≤0.005
Sr	≤0.03
		La	≤0.03
Ce	≤0.03
		Y	≤0.1
Er	≤0.05
		Sc	≤0.05
Al	Surplus and inevitable impurity.

Preferred distance rod ingredient four are as follows:

Element	Dosage (mass percent, wt%)
		Si	0.1~1.2
Mg	0.04~3.0
		Fe	0.08~1.0
Cu	0.1~3.0
		Mn	0.1~0.8
Cr	0.1~0.35
		Zn	4.0~8.0
Ti	0.001~0.20
		Zr	0.005~0.25
Sr	≤0.03
		La	≤0.03
Ce	≤0.03
		Y	≤0.1
Er	≤0.05
		Sc	≤0.05
Al	Surplus and inevitable impurity.

Preferred distance rod ingredient five are as follows:

Element	Dosage (mass percent, wt%)
		Si	0.3~0.6
Mg	2.0~10.5
		Fe	0.01~0.8
Cu	0.005~0.2
		Mn	0.05~1.2
Cr	0.001~0.35
		Zn	0.10~0.25
Ti	0.01~0.20
		Zr	0.001~0.30
Sr	≤0.03
		La	≤0.03
Ce	≤0.03
		Y	≤0.1
Er	≤0.05
		Sc	≤0.05
Al	Surplus and inevitable impurity.

Second part, the optimization structure of aluminium alloy thrust bar body

Referring to shown in Fig. 1, Figure 1A-Fig. 1 G, the V-arrangement thrust bar body that the present invention designs includes A casing 1, B casing 10, A Bulb 2A, B bulb 2B, V-arrangement bulb 3；The other end that one end of A casing 1 is equipped with A bulb 2A, A casing 1 is mounted on V-arrangement bulb On 3 A support arm 3A；The other end that one end of B casing 10 is equipped with B bulb 2B, B casing 10 is mounted on the B support arm of V-arrangement bulb 3 On 3B.The BA through-hole 2A2 of A bulb 2A is for installing a flexural pivot, and the BB through-hole 2B2 of B bulb 2B is for installing another flexural pivot, V-arrangement The CA through-hole 3C1 of bulb 3 is for installing the flexural pivot for meeting V-arrangement bulb 3.

A casing 1 is identical as the structure of B casing 10；A bulb 2A is identical as the structure of B bulb 2B.

Casing 1

Referring to shown in Fig. 1, Figure 1A~Fig. 1 D, Fig. 3, Fig. 3 B, Fig. 3 C, in order to enable aluminium alloy casing 1 has excellent knot Structure, casing 1 are an integral molding structure part, and there is A through-hole 1A at the center of casing 1；The total length of casing 1 is denoted as L₁, interior the half of casing 1 Diameter (i.e. the radius of through-hole 1A) is denoted as r_1A.Generally, L₁=420~810mm, r_1A=18~30mm.

In the present invention, casing 1 can be hollow structure (Fig. 3 B, Fig. 3 C), be also possible to solid construction (Fig. 3 D, figure 3E).Similarly, there is AB through-hole at the center of B casing 10, can be hollow structure, is also possible to solid construction.

Bulb 2A, 2B

Referring to shown in Fig. 1, Figure 1A-Fig. 1 G, Fig. 4, Fig. 4 A- Fig. 4 E, Fig. 5, A bulb 2A is identical as the structure of B bulb 2B, and A bulb 2A and B bulb 2B is an integral molding structure part.It is illustrated below with the structure of A bulb 2A.

End of the A bulb 2A equipped with BA through-hole 2A2, A bulb 2A is BA linkage section 2A3, and the BA linkage section 2A3 passes through Friction welding (FW) is connect with one end of A casing 1.Similarly, shown in Figure 1, B bulb 2B is equipped with the end of BB through-hole 2B2, B bulb 2B Portion is BB linkage section 2B3, and the BB linkage section 2B3 is connect by friction welding (FW) with the other end of B casing 10.

An end face of A bulb 2A is A aperture end plates 2A3A, in the end BA through-hole 2A2 close to A aperture end plates 2A3A Equipped with BA inner convex platform 2A4 (shown in Fig. 4 E), BA inner convex platform 2A4 is in contact with it after the entrance of big nose end for limiting a flexural pivot, is reached To the restriction of rigging position；The other end of A bulb 2A is A macropore end plates 2A3B.The BA at the end the A aperture end plates 2A3A Through-hole 2A2 is less than the BA through-hole 2A2 at the end the A macropore end plates 2A3B, and flexural pivot enters from BA through-hole 2A2, and is placed in BA through-hole It is limited in 2A2 and with BA inner convex platform 2A4, is mounted on flexural pivot on A bulb 2A.

It is A ellipse section 2A5 and A arc section 2A6 that the neck of A bulb 2A, which is equipped with,.Similarly, it is ellipse to be equipped with B for the neck of B bulb 2B Circle segments 2B5 and B arc section 2B6.In order to realize the high bearing capacity of aluminum alloy material distance rod, the A bulb that the present invention designs 2A neck structure feature is to meet shown in Fig. 4 F.In Fig. 4 F, the center of circle of the bottom of BA linkage section 2A3 is denoted as O, BA linkage section The radius of 2A3 is denoted as r_2A1(r_2A1=r_1A), in order to enhance the intensity of bulb binding site, devise enhancing locus circle and enhancing rail Mark is oval, and it is circular arc segment structure that the enhancing locus circle is corresponding, and it is oval section that the enhancing track is oval corresponding, The radius for enhancing locus circle is r₁, andThe enhancing elliptical major radius in track is denoted as Oa, Oa=(4.5 ~5.5) r_1A, enhance the elliptical short radius in track and be denoted as Ob, Ob=4r_1A.Auxiliary circle is drawn by radius of Oa；Second aspect, it is above Distance be cuts off to obtain the upper profile sideline 2A3-1 of A bulb 2A, and distance df cuts off to obtain the bottom profiled sideline of A bulb 2A below 2A3-2；Be is not equal to df；Auxiliary draws left profile sideline 2A3-3 and right wheel exterior feature sideline 2A3-4；The third aspect, with major radius Oa Auxiliary ellipse is drawn with short radius Ob, as oval section.

Another bulb (C bulb 4) structure that the present invention designs as shown in figure 5, C bulb 5 in addition to increasing on linkage section For extension rod 41 with a, remaining structure is identical with A bulb 2A.In the structure of C bulb 4, in addition to extension rod 41, referred to as C The C flexural pivot mounting base 33 of bulb 4, i.e. C bulb 4 include extension rod 41 and C flexural pivot mounting base 43.The C flexural pivot mounting base 43 It is equipped with the D through-hole 42 for installing a flexural pivot, the end face of extension rod 41 and one end of casing are connected using friction welding (FW), C bulb 4 Neck be equipped with C arc section 46 and C ellipse section 45.

The size that casing meets with bulb binding site is

In the present invention, the radius of arc section (2A6,2B6) is r₁, the major radius of oval section (2A5,2B5) is Oa, short Radius is Ob, then has,Oa=(4.5~5.5) r_1A, Ob=(3~4) r_1A。

V-arrangement bulb 3

Referring to shown in Fig. 1, Figure 1A, Fig. 2, Fig. 2A, Fig. 2 B, Fig. 4 E, V-arrangement bulb 3 is equipped with A support arm 3A, B support arm 3B and C Flexural pivot mounting base 3C；It is CA through-hole 3C1, CC through-hole 3C1 in the middle part of C flexural pivot mounting base 3C for placing a flexural pivot.V-arrangement bulb 3 On two support arms maximum radius and BA pipeline section 2A1 radius r_2A1It is identical.

The other end of A casing 1 is installed on A support arm 3A.

The other end of B casing 10 is installed on B support arm 3B.

Part III processes aluminium alloy V-arrangement thrust bar body

Casing preparation process is hot extrusion molding, and technical process is as follows:

101 steps prepare aluminium alloy according to certain proportion, and aluminum alloy blank are heated in chamber type electric resistance furnace 380~520 DEG C, keep the temperature 30~60min；

Extrusion die temperature is heated to 400~500 DEG C, and keeps the temperature 10~30min by 102 steps, and blank is carried out hot extrusion It presses toPieces of bar stock；

The precise extrusion molding process of bulb and V-arrangement bulb are as follows:

The bulb and V-arrangement bulb preparation process can form for precise extrusion, and extruding rate is 2.0~6.0mm/s.

201 steps prepare aluminium alloy according to certain proportion, according to the size of design size setting bulb blank, and will Blank is heated to 380~500 DEG C in chamber type electric resistance furnace, keeps the temperature 30~60min；

Special extrusion die temperature is heated to 400~500 DEG C, keeps the temperature 10~30min by 202 steps；

The blank heated is transferred in special extrusion die by 203 steps in 2~5s, after punch-pin is contacted with blank, Extruder carries out the forward extrusion of bulb with the extruding rate of 3.0~8.0mm/s, and bulb is squeezed into cavity；

The forging molding process process of bulb and V-arrangement bulb are as follows:

211 steps prepare aluminium alloy according to certain proportion, according to the size of design size setting bulb blank, and will Blank heating keeps the temperature 30~60min to 380~500 DEG C；

212 steps execute pre- forging process, the bulb blank of heating are put into blocking lower die die cavity, forging equipment sliding block Drive blocking upper mold to be molded fastly with the movement of the speed of 3.0~8.0m/s with lower die, after molding forging equipment clamping mechanism into Row mode locking, hereafter pressure mechanism drives jumping-up formed punch towards die inside squeeze bulb blank middle section, forms pre- forging；

213 steps execute finish-forging technique, pre- forging are put into finish-forging lower die die cavity, and forging equipment sliding block drives finish-forging Upper mold is molded with the speed movement of 5.0~10m/s with lower die fastly, and forging equipment clamping mechanism carries out mode locking after molding, eventually Formed punch squeeze bulb blank again is forged, whole rough forging is obtained.

Part IV, the assembly of aluminium alloy V-arrangement thrust bar body

Aluminium alloy bulb, V-arrangement bulb and aluminium alloy casing are attached by friction welding (FW) moulding process, are specifically included following Step:

The knot than covering 0.2~0.5mm of the thickness of pipe is processed into bulb, V-arrangement bulb and casing connection position by installation step one Structure；

Installation step three works out the PLC control program of friction welding apparatus, sets welding condition, and 1 grade of friction pressure is 0.5~4MPa, fraction time are 5~10s, set 2 grades of friction pressures as 1~6MPa, fraction time is 9~15s, setting friction Welding machine revolving speed is 300~1000rpm；

Installation step four starts friction-welding machine, moves bulb, V-arrangement bulb high speed rotation and along slide plate on power head Close to casing, frictional heat generation when casing is contacted using end high speed rotation, enables aluminum alloy to soften, while on power spindle head Apply the upsetting force of 7~16MPa, upset time is 3~15s, and bulb, V-arrangement bulb and casing is made to realize solid diffusivity；

Aluminium alloy bulb can weld moulding process by agitating friction with aluminium alloy casing and be attached, and specifically include following step It is rapid:

Bulb, V-arrangement bulb and casing connection position are processed into and the same wall thickness of casing by installation step A according to design size Structure；

Bulb, V-arrangement bulb and casing are fixed on the special welding fixture of numerical control friction stir welding machine by installation step B；

Installation step C sets friction stir welding machine mixing needle revolving speed as 800~2000rpm, and weldering speed is 100~250mm/ min；

Embodiment 1

The ingredient of distance rod in embodiment one are as follows:

Element	Dosage (mass percent, wt%)
		Si	0.9
Mg	1.6
		Fe	0.8
Cu	7.0
		Mn	0.8
Cr	0.05
		Ni	0.008
Zn	0.25
		Ti	0.14
Zr	0.08
		Sr	0.01
Er	0.01
		Al	Surplus and inevitable impurity.

The total length L of casing 1₁=810mm, the inside radius r of casing 1_1A=30mm；The linkage section radius r of bulb 2A_2A1= 30mm；The radius of bulb neck arc section (2A6,2B6)The length of oval section (2A5,2B5) half Diameter is Oa=135mm, short radius Ob=90mm.

101 steps prepare aluminium alloy according to certain proportion, and aluminum alloy blank are heated in chamber type electric resistance furnace 380 DEG C, keep the temperature 60min；

Extrusion die temperature is heated to 460 DEG C, and keeps the temperature 30min by 102 steps, by blank be hot extruded into forPieces of bar stock；

The bulb and V-arrangement bulb preparation process can form for precise extrusion, extruding rate 4.5mm/s.

201 steps prepare aluminium alloy according to certain proportion, according to the size of design size setting bulb blank, and will Blank is heated to 440 DEG C in chamber type electric resistance furnace, keeps the temperature 40min；

Special extrusion die temperature is heated to 430 DEG C, keeps the temperature 30min by 202 steps；

The blank heated is transferred in special extrusion die by 203 steps in 5s, after punch-pin is contacted with blank, is squeezed Press carries out the forward extrusion of bulb with the extruding rate of 7.0mm/s, and bulb is squeezed into cavity；

Aluminium alloy thrust bar body is assembled using Friction stir welding

Installation step C, sets friction stir welding machine mixing needle revolving speed as 1200rpm, weldering speed 150mm/min；

The performance test of aluminium alloy thrust bar body

In the present invention, aluminium will be assembled into according to Part IV through casing made from Part III, bulb and V-arrangement bulb Alloy thrust bar body.

Mechanics Performance Testing, stress-strain are carried out to it using 45.105 type microcomputer controlled electronic universal tester of MTS As a result see Fig. 6, it is seen that average tensile strength 523.7MPa, the yield strength 370.87MPa, elongation percentage of designed distance rod 17.53%, actual use intensity requirement can be met.

Distance rod assembly carries out pull-off test detection after the assembly is completed, using MTS universal testing machine, applies in distance rod The tensile load of 250KN, the results showed that do not occur in place of bulb and casing riveting place, V-arrangement bulb and casing riveting opposite Sliding, does not occur easily pulling phenomenon.

Distance rod assembly carries out fatigue test detection after the assembly is completed, using electo hydraulic servocontrolled fatigue testing machine, and loading force is 150KN, loading frequency 1.5HZ are recycled 1,000,000 times, the results showed that V-type distance rod does not occur phenomenon of rupture, tests forward and backward rigid Degree variation is no more than 30%, illustrates that distance rod fatigue life is preferable.

Claims

1. a kind of split type V-type distance rod of aluminium alloy, it is characterised in that: the material of V-type distance rod is aluminium alloy, preferred ingredient It is Al-Cu alloy, Al-Si alloy, Al-Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, with And the aluminium alloy of the micro-alloying elements such as Sr, La, Ce, Y, Sc, Er, Nb, B, Cr is added in above-mentioned acieral.

2. the material of the split type V-type distance rod of aluminium alloy according to claim 1, it is characterised in that the ingredient of distance rod Are as follows:

3. the material of the split type V-type distance rod of aluminium alloy according to claim 1, it is characterised in that distance rod ingredient are as follows:

4. a kind of split type V-type distance rod of aluminium alloy, is made of casing, bulb and flexural pivot, between V-arrangement bulb and both ends bulb By casing connection, flexural pivot is mounted in the through-hole of bulb；It is characterized by:

A casing 1 is an integral molding structure part；

B casing 10 is an integral molding structure part；

The other end that an end face of A bulb 2A is A aperture end plates 2A3A, A bulb 2A is A macropore end plates 2A3B；BA connects It meets section 2A3 and is connect with 1 one end of A casing by friction welding (FW)；The neck of A bulb 2A is equipped with A ellipse section 2A5 and A arc section 2A6；

The other end that an end face of B bulb 2B is B aperture end plates 2B3A, B bulb 2B is B macropore end plates 2B3B；BB connects It meets section 2B3 and is connect with 10 other end of B casing by friction welding (FW)；The neck of B bulb 2B is equipped with B ellipse section 2B5 and B arc section 2B6；

V-arrangement bulb 3 is equipped with A support arm 3A, B support arm 3B and C flexural pivot mounting base 3C；It is CA through-hole in the middle part of C flexural pivot mounting base 3C 3C1, CC through-hole 3C1 are for placing a flexural pivot.The other end of A casing 1 is installed on A support arm 3A.B set is installed on B support arm 3B The other end of pipe 10.

5. the split type V-type distance rod of aluminium alloy according to claim 4, it is characterised in that: the total length of casing 1 is L₁, set The inside radius of pipe 1 is r_1A, the radius of bulb 2A is denoted as r_2A1；The radius of arc section (2A6,2B6) is r₁, oval section (2A5, Major radius 2B5) is Oa, short radius Ob, then has,Oa=(4.5~5.5) r_1A, Ob=(3~4) r_1A。

6. the split type V-type distance rod of aluminium alloy according to claim 4, it is characterised in that: casing (1,10) is solid knot Structure is hollow structure.

7. hot extrusion technique preparation can be used in the split type V-type distance rod of aluminium alloy, it is characterised in that:

The hot extrusion molding technique of aluminium alloy casing:

101 steps prepare aluminium alloy according to target component, and aluminum alloy blank are heated to certain temperature in chamber type electric resistance furnace And it keeps the temperature；

Extrusion die temperature is heated to certain temperature and keeps the temperature a period of time, is then hot extruded into blank by 102 steps For the pieces of bar stock of required size；

Aluminium alloy bulb and V-arrangement bulb use extrusion forming:

201 steps prepare aluminium alloy according to target component, according to the size of design size setting bulb blank, and blank are existed It is heated to certain temperature in chamber type electric resistance furnace and keeps the temperature；

The blank heated is quickly transferred in extrusion die by 203 steps, and after punch-pin is contacted with blank, extruder is with suitable Extruding rate carry out bulb forward extrusion, bulb is squeezed into cavity；

Bulb is carried out secondary extrusion by 204 steps, to form designed shape, is then resetted punch-pin, by bulb from mold It takes out.

8. the split type V-type distance rod of aluminium alloy can be used extruding and be prepared with forging group technology, it is characterised in that:

The hot extrusion molding technique of casing:

Extrusion die temperature is heated to certain temperature and keeps the temperature a period of time, blank is hot extruded into as institute by 102 steps Need the pieces of bar stock of size；

Bulb and V-arrangement bulb use forging molding process process are as follows:

211 steps prepare aluminium alloy according to certain proportion, according to the size of design size setting bulb blank, and by blank It is heated to certain temperature, heat preservation a period of time；

212 steps execute pre- forging process, and the bulb blank of heating is put into blocking lower die die cavity, and forging equipment sliding block drives Blocking upper mold is molded with certain speed movement with lower die fastly, and forging equipment clamping mechanism carries out mode locking after molding, hereafter Pressure mechanism drives jumping-up formed punch towards die inside squeeze bulb blank middle section, forms pre- forging；

213 steps execute finish-forging technique, pre- forging are put into finish-forging lower die die cavity, and forging equipment sliding block drives finish-forging upper mold It is molded fastly with certain speed movement with lower die, forging equipment clamping mechanism carries out mode locking after molding, and finish-forging formed punch is again Squeeze bulb blank obtains whole rough forging.

9. the split type V-type distance rod of aluminium alloy can be used agitating friction weldering and be assembled, it is characterised in that include the following steps:

The pipe with casing with wall thickness is processed into according to design size in bulb, V-arrangement bulb and casing connection position by installation step A Structure；

Installation step D, starts friction stir welding machine, and mixing needle protrudes into the seam of bulb, V-arrangement bulb and casing while rotating In, the mixing needle shaft shoulder is plasticized aluminum alloy heat to be welded with bulb and sleeve surface friction-stir heat, and leads in stirring-head rotation Draw under effect, shifted from the front to the back around stirring-head, realizes the solid diffusivity of bulb, V-arrangement bulb and casing；

Installation step E, distance rod unclamp fixture after being welded successfully, take out distance rod, and size, crack defect detection are carried out to it.

10. the split type V-type distance rod of aluminium alloy can be used friction welding method and be assembled, it is characterised in that include following step It is rapid:

Installation step two, bulb, V-arrangement bulb are fixed on friction-welding machine power spindle, step up casing using special fixture；

Installation step three works out the PLC control program of friction welding apparatus, sets 1 grade of friction pressure, 1 grade of fraction time, 2 grades are rubbed Wipe pressure, 2 grades of fraction times, the welding conditions such as friction-welding machine revolving speed；

Installation step four starts friction-welding machine, and bulb is made high speed rotation and to move closer to casing along slide plate on power head, utilizes Bulb high speed rotation contacts frictional heat generation when casing, enables aluminum alloy to soften, while applying certain top on power spindle head Forging force controls upset time, and bulb, V-arrangement bulb and casing is made to realize solid diffusivity；

Installation step five, distance rod unclamp fixture after being welded successfully, take out distance rod, and size, crack defect detection are carried out to it.