CN102886464B - Overall composite mechanical push rod type or inner high-pressure bulging device for car drive axle - Google Patents
Overall composite mechanical push rod type or inner high-pressure bulging device for car drive axle Download PDFInfo
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- CN102886464B CN102886464B CN201210357493.5A CN201210357493A CN102886464B CN 102886464 B CN102886464 B CN 102886464B CN 201210357493 A CN201210357493 A CN 201210357493A CN 102886464 B CN102886464 B CN 102886464B
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Abstract
The invention relates to an overall composite mechanical push rod type or inner high-pressure bulging device for a car drive axle. The bulging device comprises a bulging inner die, a bulging outer die and two thrust hydraulic cylinders, wherein the bulging inner die comprises an upper die block and a lower die block, and a multi-stage auxiliary hydraulic cylinder is arranged between the upper die block and the lower die block. Two ends of the upper die block and the lower die block are respectively connected with the two thrust hydraulic cylinders through link mechanisms. The multi-stage auxiliary hydraulic cylinder comprises an auxiliary piston rod and at least two stages of auxiliary hydraulic cylinder bodies which are stacked and sheathed together and adopt a telescopic structure, and the auxiliary piston rod is sheathed onto the innermost layer of auxiliary hydraulic cylinder body. Oil ports connected with a hydraulic source are arranged on a rodless chamber, a piston rod chamber and a grading oil chamber of the multi-stage auxiliary hydraulic cylinder. The bulging outer die comprises a support mechanism positioned on a transitional surface between the bulging deforming area and the un-deforming area of an axle shell pipa bag. The piston rods of the two thrust hydraulic cylinders are oppositely arranged, and the axes of the two piston rods are positioned on the same one straight line. Moreover, a quick-detached connecting structure is arranged on the piston rod of one thrust hydraulic cylinder.
Description
Technical field
The invention belongs to mechanical-moulded processing technique field, concrete is a kind of automobile drive axle entirety composite machine push-down or inner high voltage formula bulging device.
Background technology
Auto manufacturing has very important effect in Chinese national economy, in recent years, the national economy high speed development of China, meanwhile auto industry is also flourish.Performance from vehicle complete vehicle to parts, all become the major subjects of current industrial research, and axle housing is as one of strength member of automobile, axle housing not only plays supporting role to automobile, but also is differential mechanism, main reducing gear and the shell that drives wheel drive.Automobile axle housing quality is very large on the impact of vehicle performance, and axle housing not only needs to possess enough intensity, rigidity and fatigue life, but also should be simple in structure, and cost is lower, and quality is light, is easy to dismounting and maintenance.
Automobile axle housing forming method mainly contains following several, and its pluses and minuses are as follows:
cast shaping process
Advantage: the easily axle housing of the complex-shaped and wall unevenness of cast form, rigidity, intensity are larger;
Shortcoming: control shaping flow difficulties, easily crack, pore, and weight is large, following process complexity, welding sequence easily cracks, is out of shape;
The scope of application: the rear axle housing that is mainly applicable to Medium or severe type truck is produced.
punching press-welding fabrication technique
Advantage: good manufacturability, percent defective is lower, and reliability is high, easily manufactures, and allowance is little, and quality is light, and precision is high, and price is lower, and product remodeling is convenient, easily realizes the production automation;
Shortcoming: operation is various, the axle housing that is only applicable to simple geometry is produced, and the axle housing intensity that production obtains is lower, and cost is large; Also have welding requirements in addition highly, difficult quality guarantee, easily cracks, the defect of distortion, small opening, and weld zone easy territory fatigue fracture;
The scope of application: the scope of application is wider, is generally used for Light-duty Vehicle, agricultural vehicle.
expansion is shaped
Advantage: expanding and shaping technique is the derivation of punching press-welding fabrication technique, but its workload minimizing, working (machining) efficiency is high, good airproof performance, the Rigidity and strength of the axle housing obtaining is high, lightweight;
Shortcoming: the place of longitudinally cracking easily produces transversal crack, and Chinese lute bag place flange width is inhomogeneous, and side creases easily and pulls;
The scope of application: be mainly applicable to car, light, medium-duty truck.
machinery bulging
Advantage: workload reduces, and working (machining) efficiency is high, and the back axle obtaining is lightweight, can higher, the complex-shaped axle housing of production size, and blank utilization rate and production efficiency all higher, the comprehensive mechanical property of back axle is high;
Shortcoming: bulging power is difficult to control, and bulging mechanism and process complexity, easily crack;
The scope of application: be mainly applicable to passenger car and light medium truck.
hydraulic expanding-forming
Advantage: stock utilization is high, operation is few, and production efficiency is high, and the axle housing strength and stiffness that obtain are high and lightweight, easily realize production mechanization and automated production;
Shortcoming: technique is still not overripened, high to the requirement of high pressure liquid potential source, easy oil leakage and contaminated environment, expend time in and fund initial stage of investment;
The scope of application: car, light-duty and medium-duty truck.
To sum up, the actual production of axle housing requires to minimize cost, and ensures its mechanical performance, also will shorten the R&D cycle simultaneously as far as possible, and this just needs the research of new technology, new technology to promote the fast development of axle housing manufacturing process.
For the pluses and minuses of existing automobile axle housing manufacturing process, and in conjunction with China's practical application present situation, the processing and forming technology of existing automobile drive axle rear axle housing mainly contains subject matter and deficiency:
1, the axle housing manufacturing process of China's practical application major part is cast shaping process and punching press-welding fabrication technique, and other forming method is due to technology, economic dispatch reason, applies lessly, or is in the development test stage;
2, the bulging power of mechanical bulging is difficult to control, and bulging mechanism and process complexity, easily crack, but blank utilization rate, production efficiency, comprehensive mechanical property are high;
3, hydraulic bulging process is still not overripened, high to the requirement of high pressure liquid potential source, easy oil leakage and contaminated environment, and the initial stage expends time in and fund, but the axle housing strength and stiffness that obtain are high, lightweight, easily realize production mechanization and automation.
In view of this, the present invention is intended to explore a kind of automobile drive axle entirety composite machine push-down or inner high voltage formula bulging device, by adopting this bulging device, can control preferably the overall process of the continuous bulging of automobile drive axle, have advantages of that blank utilization rate and production efficiency are all higher, the vehicle driving axle housing wall thickness obtaining evenly, dimensional accuracy is higher, weight is less, strength and stiffness are all higher, and have good fatigue life, can effectively ensure automobile drive axle assembling, instructions for use.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind of automobile drive axle entirety composite machine push-down or inner high voltage formula bulging device, can control preferably the overall process of the continuous bulging of automobile drive axle, can meet the Production requirement of automobile drive axle bulging.
Realize above-mentioned technical purpose, automobile drive axle of the present invention entirety composite machine push-down or inner high voltage formula bulging device, comprise bulging internal mold, bulging external mold and lay respectively at bulging internal mold two ends and for two thrust hydraulic cylinders of bulging thrust are provided;
Described bulging internal mold comprises respectively wraps with bridge casing lute upper module and the lower module that lower both sides inwall coordinates, between described upper module and lower module, be provided with at least one for by upper module and lower module separately or the multistage auxiliary hydraulic cylinder closing up, the two ends of described upper module and lower module are articulated and connected by the piston rod of linkage and two thrust hydraulic cylinders respectively;
Described bulging external mold comprises the supporting mechanism for pushing down the transition face between bulging deformed area and the non-deformation zone of bridge casing lute bag;
Described multistage auxiliary hydraulic cylinder comprises auxiliary piston rod and the stacked auxiliary hydraulic cylinder cylinder body that is set in together and is stretching structure of two-stage at least, described auxiliary piston rod is sleeved on the auxiliary hydraulic cylinder cylinder body of innermost layer, between outermost auxiliary hydraulic cylinder cylinder body and auxiliary piston rod, form rodless cavity, between the auxiliary hydraulic cylinder cylinder body of innermost layer and auxiliary piston rod, form rod end chamber, between adjacent two-stage hydraulic cylinder body, form classification oil pocket, on described rodless cavity, rod end chamber and classification oil pocket, be equipped with the hydraulic fluid port being connected with hydraulic power source;
The piston rod of described two thrust hydraulic cylinders arranges in opposite directions, and the axis of two-piston bar is located on the same line, and the piston rod of one of them thrust hydraulic cylinder is provided with quick-detachment syndeton.
Further, between adjacent two-stage hydraulic cylinder body and between auxiliary piston rod and innermost layer hydraulic cylinder body, the top that is positioned at outer field hydraulic cylinder body is provided with the inner baffle ring extending radially inwardly, the bottom that is positioned at the hydraulic cylinder body/auxiliary piston rod of internal layer is provided with the outer baffle ring extending radially outwardly and coordinate with inner baffle ring, between the periphery wall of described inner baffle ring and internal layer hydraulic cylinder body, be provided with hermetically-sealed construction, between described outer baffle ring and the internal perisporium of outer hydraulic cylinder body, be provided with hermetically-sealed construction.
Further, the hydraulic fluid port being arranged on described rod end chamber and classification oil pocket is arranged on described inner baffle ring.
Further, described linkage comprises the hinge seat being fixedly mounted on thrust hydraulic cylinder piston rod, between described hinge seat and described upper module and lower module, is articulated and connected respectively by two hinge bars.
Further, logical centre bore during the piston rod of the described thrust hydraulic cylinder that quick-detachment syndeton is not set is provided with, and on the cylinder body of this thrust hydraulic cylinder with on the hinge seat being connected with this thrust hydraulic cylinder, be equipped with the through hole coaxial with centre bore, in described centre bore and through hole, be provided with the hollow tube for the hydraulic oil pipe between described hydraulic fluid port and hydraulic power source is installed.
Further, described bulging external mold also comprises support, and described supporting mechanism comprises rack-mount support bar and be arranged on the supporting member on support bar, and described supporting member is pressed on described transition face.
Further, described supporting member is the curved surface coordinating with described transition face with the contact-making surface of axle housing workpiece.
Further, described supporting member is set to 4, and lays respectively at the both sides up and down of the two ends transition face of described bridge casing lute bag.
Further, described bulging external mold comprises external mold and lower external mold, described upper external mold wraps with being respectively equipped with on lower external mold with described bridge casing lute upper cavity and the lower mode cavity that lower both sides outer wall shape and structure is identical, described supporting mechanism be described upper cavity and lower mode cavity respectively the upper cavity corresponding with bridge casing lute bag transition face support inwall and lower mode cavity supports inwall.
Further, when described upper external mold and lower external mold are closed, described upper cavity and the lower mode cavity composition bulging chamber identical with the outer wall shape and structure of bridge casing lute bag.
Beneficial effect of the present invention is:
1, automobile drive axle entirety composite machine push-down of the present invention or inner high voltage formula bulging device are before use, first the quick-detachment syndeton being arranged on one of them thrust hydraulic cylinder piston rod is separated, bulging internal mold is placed in axle housing workpiece, and then this thrust hydraulic cylinder piston rod is connected by quick-detachment syndeton; Automobile drive axle entirety composite machine push-down of the present invention or inner high voltage formula bulging device can be adopted in two ways axle housing workpiece is carried out to bulging, are respectively mechanical push rods formula and hydroforming formula.
1) mechanical push rods formula bulging mode: by the two ends of upper module and lower module are hinged by the piston rod of linkage and thrust hydraulic cylinder respectively, the thrust hydraulic cylinder at two ends can synchronously provide bulging thrust to bulging internal mold opposite to each other, under the effect of linkage, the bulging thrust of thrust hydraulic cylinder is decomposed into and acts on upper module and bulging thrust vertical stress component component parallel with bulging thrust on lower module, the direction of bulging thrust vertical stress component is perpendicular to the axial direction of axle housing workpiece, the direction of the parallel component of bulging thrust is parallel to the axial direction of axle housing workpiece, under the effect of bulging thrust vertical stress component, upper module and lower module are respectively to the upper and lower both sides of axle housing workpiece separately, extruding axle housing workpiece, realize bulging, by bulging external mold is set, can accurately control the position of axle housing workpiece bulging distortion, control axle housing workpiece and start bulging distortion at transition face place, so just can realize the bulging of bridge casing lute bag,
Because the diameter of bore of the axle housing workpiece for the production of automobile drive axle housing is generally all less, cause the angle of piston rod axis of linkage and thrust hydraulic cylinder very little, the bulging thrust vertical stress component being decomposed into by the thrust of thrust hydraulic cylinder is very little, and the required power of extruding axle housing workpiece deformation is generally larger, iff adopting linkage to connect thrust hydraulic cylinder and bulging internal mold, may cause upper module and lower module successfully to open to the both sides up and down of axle housing workpiece, cannot realize bulging, the multistage auxiliary hydraulic cylinder that auxiliary upper module and lower module open now need to be set between upper module and lower module, multistage auxiliary hydraulic cylinder can provide upper module and lower module separately or the auxiliary hydraulic pressure power of closing up, auxiliary hydraulic pressure power is perpendicular to the axial direction of axle housing workpiece, because the diameter of bore of axle housing workpiece is very little, and bridge casing lute bag is larger to the distortion ratio of both sides bulging distortion, traditional hydraulic cylinder not only cannot meet the requirement of installing and using in little space, and cannot provide and meet the required hydraulic coupling stroke of deflection, multistage auxiliary hydraulic cylinder of the present invention, be set to stacked be set in together at least two-layer mutually by auxiliary hydraulic cylinder cylinder body, not only can effectively dwindle required space is installed, and form stretching structure between auxiliary hydraulic cylinder cylinder body, by elongation and the shortening of auxiliary hydraulic cylinder cylinder body, the hydraulic coupling stroke that can effectively improve multistage auxiliary hydraulic cylinder, can meet instructions for use,
2) inner high voltage formula bulging mode: the bulging hydraulic coupling perpendicular to axle housing axis of workpiece direction that multistage auxiliary hydraulic cylinder applies upper module and lower module is the main bulging power that makes the distortion of axle housing workpiece generation bulging, the thrust that thrust hydraulic cylinder and thrust hydraulic cylinder apply bulging internal mold is mainly as the augmented thrust of upper module and lower module, in the bulging hydraulic coupling taking multistage auxiliary hydraulic cylinder under the effect of main bulging power, the distortion of axle housing workpiece generation bulging, realize bulging, augmented thrust is decomposed into and acts on upper module with on lower module and perpendicular to the augmented thrust vertical stress component and the parallel component of augmented thrust that is parallel to axle housing workpiece axial direction of axle housing workpiece axial direction under the effect of linkage, under the effect of the parallel component of augmented thrust, can prevent the occurrence positions skew in Bulging Process of upper module and lower module, ensure the quality of the bridge casing lute bag obtaining after bulging, be set to stacked be set in together at least two-layer mutually by auxiliary hydraulic cylinder cylinder body, not only can effectively dwindle required space is installed, and form stretching structure between auxiliary hydraulic cylinder cylinder body, by elongation and the shortening of auxiliary hydraulic cylinder cylinder body, the hydraulic coupling stroke that can effectively improve multistage auxiliary hydraulic cylinder, can meet instructions for use.
Brief description of the drawings
Fig. 1 is automobile drive axle entirety composite machine push-down of the present invention or the structural representation of inner high voltage formula bulging device the first embodiment after workpiece bulging has been out of shape;
Fig. 2 is automobile drive axle entirety composite machine push-down or the structural representation of inner high voltage formula bulging device before the distortion of workpiece bulging of the present embodiment;
Fig. 3 is bulging internal model structure schematic diagram;
Fig. 4 is the structural representation of multistage auxiliary hydraulic cylinder;
Fig. 5 is automobile drive axle entirety composite machine push-down of the present invention or the structural representation of inner high voltage formula bulging device the second embodiment after workpiece bulging has been out of shape;
Fig. 6 is automobile drive axle entirety composite machine push-down or the structural representation of inner high voltage formula bulging device before the distortion of workpiece bulging of the present embodiment.
Description of reference numerals:
1-bulging internal mold; 1a-upper module; 1b-lower module; 2-bulging external mold; 3-thrust hydraulic cylinder; 4-thrust hydraulic cylinder; 5-axle housing workpiece; 5a-bridge casing lute bag; 5b-transition face; The multistage auxiliary hydraulic cylinder of 6-; 6a-auxiliary piston rod; 6b-auxiliary hydraulic cylinder cylinder body; 6c-rodless cavity; 6d-rod end chamber; 6e-classification oil pocket; 6f-hydraulic fluid port; 6g-inner baffle ring; 6h-outer baffle ring; 7-hinge seat; The two hinge bars of 8-; 9-support; 10-support bar; 11-supporting member; 12-hollow tube; The upper external mold of 13-; 13a-upper cavity; 13b-upper cavity supports inwall; External mold under 14-; 14a-lower mode cavity; 14b-lower mode cavity supports inwall.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
the first embodiment
As shown in Figure 1, be automobile drive axle entirety composite machine push-down of the present invention or the structural representation of inner high voltage formula bulging device the first embodiment after workpiece bulging has been out of shape.
Automobile drive axle entirety composite machine push-down or the inner high voltage formula bulging device of the present embodiment, comprise bulging internal mold 1, bulging external mold 2 and lay respectively at bulging internal mold 1 two ends and for thrust hydraulic cylinder 3 and the thrust hydraulic cylinder 4 of bulging thrust are provided.
As shown in Figure 3, bulging internal mold 1 comprises the upper module 1a and the lower module 1b that coordinate with the upper and lower both sides of bridge casing lute bag 5a inwall respectively, between upper module 1a and lower module 1b, be provided with at least one for by upper module 1a and lower module 1b separately or the multistage auxiliary hydraulic cylinder 6 closing up, the two ends of upper module 1a and lower module 1b are articulated and connected by the piston rod of linkage and thrust hydraulic cylinder 3 and thrust hydraulic cylinder 4 respectively, as shown in Figure 1, the thrust hydraulic cylinder 3 of the present embodiment is positioned at the left side of bulging internal mold 1, and thrust hydraulic cylinder 4 is positioned at the right side of bulging internal mold 1.Preferably, linkage comprises the hinge seat 7 being fixedly mounted on thrust hydraulic cylinder piston rod, between hinge seat 7 and upper module 1a and lower module 1b, be articulated and connected by two hinge bars 8 respectively, adopt the linkage of this structure, between two hinge bars 8 and the piston rod of thrust hydraulic cylinder, there is angle, the bulging thrust of thrust hydraulic cylinder 3 and thrust hydraulic cylinder 4 can be decomposed into the required bulging thrust vertical stress component perpendicular to axle housing workpiece axial direction of upper module 1a and lower module 1b, and be accompanied by the increase of workpiece bulging deflection, angle between two hinge bars 8 and the thrust hydraulic cylinder piston rod of linkage increases, can increase bulging thrust vertical stress component.
Bulging external mold 2 comprises the supporting mechanism for pushing down the transition face 5b between bulging deformed area and the non-deformation zone of bridge casing lute bag 5a.As depicted in figs. 1 and 2, the bulging external mold 2 of the present embodiment also comprises support 9, supporting mechanism comprises the support bar 10 being arranged on support 9 and is arranged on the supporting member 11 on support bar 10, the supporting member 11 of the present embodiment is set to 4, and lays respectively at the both sides up and down of the two ends transition face 5b of bridge casing lute bag 5a.It is upper that supporting member 11 is pressed in transition face 5b, by adopting the bulging external mold 2 of this structure, pushes down transition face 5b by supporting member 11, can control the deformed region of bridge casing lute bag 5a in bulging deformation process, prevents other region deformations of axle housing workpiece.Preferably, supporting member 11 is the curved surface coordinating with transition face 5b with the contact-making surface of axle housing workpiece 5, can prevent that transition face 5b is because distortion produces fold.
The piston rod of thrust hydraulic cylinder 3 and thrust hydraulic cylinder 4 arranges in opposite directions, the axis of two-piston bar is located on the same line, and the piston rod of one of them thrust hydraulic cylinder is provided with quick-detachment syndeton, the quick-detachment syndeton of the present embodiment is arranged on the piston rod of thrust hydraulic cylinder 4.By quick-detachment syndeton is set, the piston rod of thrust hydraulic cylinder 4 and bulging internal mold 1, thrust hydraulic cylinder 3 can be separated, be convenient to before bulging, bulging internal mold 1 is positioned in the endoporus of axle housing workpiece 5.
As shown in Figure 4, multistage auxiliary hydraulic cylinder 6 comprises auxiliary piston rod 6a and the stacked auxiliary hydraulic cylinder cylinder body 6b that is set in together and is stretching structure of two-stage at least, auxiliary piston rod 6a is sleeved on the auxiliary hydraulic cylinder cylinder body 6b of innermost layer, between outermost auxiliary hydraulic cylinder cylinder body 6b and auxiliary piston rod 6a, form rodless cavity 6c, between the auxiliary hydraulic cylinder cylinder body 6b of innermost layer and auxiliary piston rod 6a, form rod end chamber 6d, between adjacent two-stage hydraulic cylinder body 6b, form classification oil pocket 6e, rodless cavity 6c, rod end chamber 6d is equipped with on classification oil pocket 6e the hydraulic fluid port 6f being connected with hydraulic power source.As shown in Figure 1, the multistage auxiliary hydraulic cylinder 6 of the present embodiment is set to 1, and the multistage auxiliary hydraulic cylinder 6 of the present embodiment comprises three grades of stacked auxiliary hydraulic cylinder cylinder body 6b that are set in together and are stretching structure.
Adopt the multistage auxiliary hydraulic cylinder 6 of this structure, outwards provide in the process of hydraulic thrust at piston rod 6a, rodless cavity 6c oil-feed, rod end chamber 6d and the equal oil return of classification oil pocket 6e, can realize multistage auxiliary hydraulic cylinder 6 elongations and hydraulic coupling is outwards provided; In like manner, in the time that piston rod 6a bounces back, rodless cavity 6c oil return, rod end chamber 6d and the equal oil-feed of classification oil pocket 6e, can realize piston rod 6a retraction.
The automobile drive axle entirety composite machine push-down of the present embodiment or inner high voltage formula bulging device are before use, first the quick-detachment syndeton being arranged on thrust hydraulic cylinder 4 piston rods is separated, bulging internal mold 1 is placed in axle housing workpiece 5, and then these thrust hydraulic cylinder 4 piston rods are connected by quick-detachment syndeton, carry out the preparation of axle housing workpiece 5 bulging distortion.The automobile drive axle entirety composite machine push-down of the present embodiment or inner high voltage formula bulging device can be adopted in two ways axle housing workpiece is carried out to bulging, are respectively mechanical push rods formula and hydroforming formula.
1) mechanical push rods formula bulging mode: by the two ends of upper module 1a and lower module 1b are hinged by the piston rod of linkage and thrust hydraulic cylinder 3 and thrust hydraulic cylinder 4 respectively, thrust hydraulic cylinder 3 and thrust hydraulic cylinder 4 can synchronously provide bulging thrust to bulging internal mold 1 opposite to each other, under the effect of linkage, the bulging thrust of thrust hydraulic cylinder 3 or thrust hydraulic cylinder 4 is decomposed into and acts on upper module 1a and bulging thrust vertical stress component component parallel with bulging thrust on lower module 1b, the direction of bulging thrust vertical stress component is perpendicular to the axial direction of axle housing workpiece 5, the direction of the parallel component of bulging thrust is parallel to the axial direction of axle housing workpiece 5, under the effect of bulging thrust vertical stress component, upper module 1a and lower module 1b separate both sides Shang Xia 5 to axle housing workpiece respectively, extruding axle housing workpiece 5, realize bulging.By bulging external mold 2 is set, can accurately control the position of axle housing workpiece 5 bulging distortion, control axle housing workpiece 5 and start bulging distortion at transition face place, so just can realize the bulging of bridge casing lute bag 5a;
Because the diameter of bore of the axle housing workpiece 5 for the production of automobile drive axle housing is generally all less, cause the angle of piston rod axis of linkage and thrust hydraulic cylinder very little, the size of the bulging thrust vertical stress component being decomposed into by the bulging thrust of thrust hydraulic cylinder is very little, and that extruding axle housing workpiece 5 is out of shape required power is generally larger, iff adopting linkage to connect thrust hydraulic cylinder and bulging internal mold 1, may cause upper module 1a and lower module 1b successfully to open to the both sides up and down of axle housing workpiece 5, cannot realize bulging, the multistage auxiliary hydraulic cylinder 6 that auxiliary upper module 1a and lower module 1b open now need to be set between upper module 1a and lower module 1b.Multistage auxiliary hydraulic cylinder 6 can provide upper module 1a and lower module 1b separately or the auxiliary hydraulic pressure power of closing up, and auxiliary hydraulic pressure power is perpendicular to the axial direction of axle housing workpiece 5.Because the diameter of bore of axle housing workpiece 5 is very little, and bridge casing lute bag 5 is larger to the distortion ratio of both sides bulging distortion, and traditional hydraulic cylinder not only cannot meet the requirement of installing and using in little space, and cannot provide and meet the required hydraulic coupling stroke of deflection.The multistage auxiliary hydraulic cylinder 6 of the present embodiment, be set to stacked be set in together at least two-layer mutually by auxiliary hydraulic cylinder cylinder body 6b, not only can effectively dwindle required space is installed, and form stretching structure between auxiliary hydraulic cylinder cylinder body 6b, by elongation and the shortening of auxiliary hydraulic cylinder cylinder body 6b, the hydraulic coupling stroke that can effectively improve multistage auxiliary hydraulic cylinder 6, can meet instructions for use.
2) inner high voltage formula bulging mode: the bulging hydraulic coupling perpendicular to axle housing workpiece 5 axis directions that multistage auxiliary hydraulic cylinder 6 applies upper module 1a and lower module 1b is to make axle housing workpiece 5 that the main bulging power of bulging distortion occur, the thrust that thrust hydraulic cylinder 3 and thrust hydraulic cylinder 4 apply bulging internal mold 1 is mainly as the augmented thrust of upper module 1a and lower module 1b, in the bulging hydraulic coupling taking multistage auxiliary hydraulic cylinder 15 under the effect of main bulging power, there is bulging distortion in axle housing workpiece 5, realize bulging, augmented thrust is decomposed into and acts on upper module with on lower module and perpendicular to the augmented thrust vertical stress component and the parallel component of augmented thrust that is parallel to axle housing workpiece axial direction of axle housing workpiece axial direction under the effect of linkage, under the effect of the parallel component of augmented thrust, can prevent upper module 1a and lower module 1b occurrence positions skew in Bulging Process, ensure the quality of the bridge casing lute bag obtaining after bulging, be set to stacked be set in together at least two-layer mutually by auxiliary hydraulic cylinder cylinder body, not only can effectively dwindle required space is installed, and form stretching structure between auxiliary hydraulic cylinder cylinder body, by elongation and the shortening of auxiliary hydraulic cylinder cylinder body, the hydraulic coupling stroke that can effectively improve multistage auxiliary hydraulic cylinder, can meet instructions for use.
As the above-mentioned technical solutions of this embodiment preferably, logical centre bore during the piston rod that the thrust hydraulic cylinder of quick-detachment syndeton is not set is provided with, and on the cylinder body of this thrust hydraulic cylinder with on the hinge seat 7 being connected with this thrust hydraulic cylinder, be equipped with the through hole coaxial with centre bore, in centre bore and through hole, be provided with the hollow tube 12 for the hydraulic oil pipe between hydraulic fluid port 6f and hydraulic power source is installed.As depicted in figs. 1 and 2, the centre bore of the present embodiment is arranged on the piston rod of thrust hydraulic cylinder 3, accordingly, the cylinder body of thrust hydraulic cylinder 3 is provided with through hole with the hinge seat 7 being connected with thrust hydraulic cylinder 3, hollow tube 12 extends through centre bore and through hole, and the hydraulic oil pipe between hydraulic fluid port 6f and hydraulic power source is arranged in hollow tube 12.Because the internal diameter of axle housing workpiece 5 is less, occupy behind a large amount of spaces in the structure such as piston rod and linkage of thrust hydraulic cylinder, the arrangement space deficiency of the hydraulic oil pipe between hydraulic fluid port 6f and hydraulic power source, extend through the hollow tube of thrust hydraulic cylinder 3 and hinge seat 7 by setting, can realize hydraulic oil pipe is arranged in hollow tube 12, and provide high pressure liquid force feed for multistage auxiliary hydraulic cylinder 6.
As the above-mentioned technical solutions of this embodiment preferably, between adjacent two-stage hydraulic cylinder body 6b and between auxiliary piston rod 6a and innermost layer hydraulic cylinder body 6b, the top that is positioned at outer field hydraulic cylinder body 6b is provided with the inner baffle ring 6g extending radially inwardly, the bottom that is positioned at the hydraulic cylinder body 6b/ auxiliary piston rod 6a of internal layer is provided with the outer baffle ring 6h extending radially outwardly and coordinate with inner baffle ring 6b, between the periphery wall of inner baffle ring 6g and internal layer hydraulic cylinder body, be provided with hermetically-sealed construction, between outer baffle ring 6h and the internal perisporium of outer hydraulic cylinder body, be provided with hermetically-sealed construction.Adopt the multistage auxiliary hydraulic cylinder 6 of this structure, between inner baffle ring 6g and outer baffle ring 6h, form position-limit mechanism, prevent from departing between adjacent two-stage hydraulic cylinder body 6b and innermost layer hydraulic cylinder body 6b and auxiliary piston rod 6a.Preferably, being arranged on hydraulic fluid port 6f on rod end chamber 6d and classification oil pocket 6e, to be arranged on inner baffle ring 6g upper, prevents that multistage auxiliary hydraulic cylinder 6 from, in telescopic process, interfering between hydraulic cylinder body 6b and hydraulic fluid port 6f.As shown in Figure 1, the outermost layer hydraulic cylinder body 6b of multistage auxiliary hydraulic cylinder 6 is fixedly mounted on lower module 1b, auxiliary piston rod 6a is fixedly mounted on upper module 1a, be arranged on the bottom that hydraulic fluid port 6f on rodless cavity 6c is positioned at outermost layer hydraulic cylinder body 6b, lower module 1b is provided with the oil circuit communicating with rodless cavity 6c hydraulic fluid port 6f.
the second embodiment
As shown in Figure 5, be automobile drive axle entirety composite machine push-down of the present invention or the structural representation of inner high voltage formula bulging device the second embodiment after workpiece bulging has been out of shape; Fig. 6 is automobile drive axle entirety composite machine push-down or the structural representation of inner high voltage formula bulging device before the distortion of workpiece bulging of the present embodiment.
The bulging external mold 2 of the present embodiment comprises external mold 13 and lower external mold 14, upper external mold 13 with on lower external mold 14, be respectively equipped with upper cavity 13a and the lower mode cavity 14a identical with the upper and lower both sides of bridge casing lute bag 5a outer wall shape and structure, supporting mechanism be upper cavity 13a and lower mode cavity 14a respectively the upper cavity corresponding with bridge casing lute bag 5a transition face 5b support inwall 13b and lower mode cavity supports inwall 14b, adopt the bulging external mold 2 of this structure, not only can effectively control the deformed region of axle housing workpiece 5 in Bulging Process, but also can better control the contour structures of the bridge casing lute bag 5a after bulging.Preferably, when upper external mold 13 and lower external mold 14 are closed, upper cavity 13a and the lower mode cavity 14a composition bulging chamber identical with the outer wall shape and structure of bridge casing lute bag 5a, adopt the bulging external mold 2 of this structure, employing will be carried out bulging after upper external mold 13 and lower external mold 14 closures, be convenient to location between external mold 13 and lower external mold 14, be more convenient for applying mold clamping force to bulging external mold 2.
The multistage auxiliary hydraulic cylinder 6 of the present embodiment is also set to one, also can be arranged side by side according to actual needs as multiple but those skilled in the art it should be known that multistage auxiliary hydraulic cylinder 6, and its principle is identical with the multistage auxiliary hydraulic cylinder 6 that is set to.
Other structures of the present embodiment are identical with the first embodiment, no longer one by one tired stating.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. automobile drive axle entirety composite machine push-down or an inner high voltage formula bulging device, is characterized in that:
Comprise bulging internal mold, bulging external mold and lay respectively at bulging internal mold two ends and for two thrust hydraulic cylinders of bulging thrust are provided;
Described bulging internal mold comprises respectively wraps with bridge casing lute upper module and the lower module that lower both sides inwall coordinates, between described upper module and lower module, be provided with at least one for by upper module and lower module separately or the multistage auxiliary hydraulic cylinder closing up, the two ends of described upper module and lower module are articulated and connected by the piston rod of linkage and two thrust hydraulic cylinders respectively;
Described multistage auxiliary hydraulic cylinder comprises auxiliary piston rod and the stacked auxiliary hydraulic cylinder cylinder body that is set in together and is stretching structure of two-stage at least, described auxiliary piston rod is sleeved on the auxiliary hydraulic cylinder cylinder body of innermost layer, between outermost auxiliary hydraulic cylinder cylinder body and auxiliary piston rod, form rodless cavity, between the auxiliary hydraulic cylinder cylinder body of innermost layer and auxiliary piston rod, form rod end chamber, between adjacent two-stage hydraulic cylinder body, form classification oil pocket, on described rodless cavity, rod end chamber and classification oil pocket, be equipped with the hydraulic fluid port being connected with hydraulic power source;
Described bulging external mold comprises the supporting mechanism for pushing down the transition face between bulging deformed area and the non-deformation zone of bridge casing lute bag;
The piston rod of described two thrust hydraulic cylinders arranges in opposite directions, and the axis of two-piston bar is located on the same line, and the piston rod of one of them thrust hydraulic cylinder is provided with quick-detachment syndeton.
2. automobile drive axle entirety composite machine push-down according to claim 1 or inner high voltage formula bulging device, it is characterized in that: between adjacent two-stage hydraulic cylinder body and between auxiliary piston rod and innermost layer hydraulic cylinder body, the top that is positioned at outer field hydraulic cylinder body is provided with the inner baffle ring extending radially inwardly, the bottom that is positioned at the hydraulic cylinder body/auxiliary piston rod of internal layer is provided with the outer baffle ring extending radially outwardly and coordinate with inner baffle ring, between the periphery wall of described inner baffle ring and internal layer hydraulic cylinder body, be provided with hermetically-sealed construction, between described outer baffle ring and the internal perisporium of outer hydraulic cylinder body, be provided with hermetically-sealed construction.
3. automobile drive axle entirety composite machine push-down according to claim 2 or inner high voltage formula bulging device, is characterized in that: the hydraulic fluid port being arranged on described rod end chamber and classification oil pocket is arranged on described inner baffle ring.
4. according to automobile drive axle entirety composite machine push-down or inner high voltage formula bulging device described in claim 1-3 any one, it is characterized in that: described linkage comprises the hinge seat being fixedly mounted on thrust hydraulic cylinder piston rod, between described hinge seat and described upper module and lower module, be articulated and connected by two hinge bars respectively.
5. automobile drive axle entirety composite machine push-down according to claim 4 or inner high voltage formula bulging device, it is characterized in that: logical centre bore during the piston rod of the described thrust hydraulic cylinder that quick-detachment syndeton is not set is provided with, and on the cylinder body of this thrust hydraulic cylinder with on the hinge seat being connected with this thrust hydraulic cylinder, be equipped with the through hole coaxial with centre bore, in described centre bore and through hole, be provided with the hollow tube for the hydraulic oil pipe between described hydraulic fluid port and hydraulic power source is installed.
6. according to automobile drive axle entirety composite machine push-down or inner high voltage formula bulging device described in claim 1-3 any one; it is characterized in that: described bulging external mold also comprises support; described supporting mechanism comprises rack-mount support bar and be arranged on the supporting member on support bar, and described supporting member is pressed on described transition face.
7. automobile drive axle entirety composite machine push-down according to claim 6 or inner high voltage formula bulging device, is characterized in that: described supporting member is the curved surface coordinating with described transition face with the contact-making surface of axle housing workpiece.
8. automobile drive axle entirety composite machine push-down according to claim 7 or inner high voltage formula bulging device, is characterized in that: described supporting member is set to 4, and lay respectively at the both sides up and down of the two ends transition face of described bridge casing lute bag.
9. according to automobile drive axle entirety composite machine push-down or inner high voltage formula bulging device described in claim 1-3 any one, it is characterized in that: described bulging external mold comprises external mold and lower external mold, described upper external mold wraps with being respectively equipped with on lower external mold with described bridge casing lute upper cavity and the lower mode cavity that lower both sides outer wall shape and structure is identical, described supporting mechanism be described upper cavity and lower mode cavity respectively the upper cavity corresponding with bridge casing lute bag transition face support inwall and lower mode cavity supports inwall.
10. automobile drive axle entirety composite machine push-down according to claim 9 or inner high voltage formula bulging device, it is characterized in that: when described upper external mold and lower external mold are closed, described upper cavity and the lower mode cavity composition bulging chamber identical with the outer wall shape and structure of bridge casing lute bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357493.5A CN102886464B (en) | 2012-09-24 | 2012-09-24 | Overall composite mechanical push rod type or inner high-pressure bulging device for car drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357493.5A CN102886464B (en) | 2012-09-24 | 2012-09-24 | Overall composite mechanical push rod type or inner high-pressure bulging device for car drive axle |
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| Publication Number | Publication Date |
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| CN102886464A CN102886464A (en) | 2013-01-23 |
| CN102886464B true CN102886464B (en) | 2014-11-05 |
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| CN201210357493.5A Expired - Fee Related CN102886464B (en) | 2012-09-24 | 2012-09-24 | Overall composite mechanical push rod type or inner high-pressure bulging device for car drive axle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103317052A (en) * | 2013-06-06 | 2013-09-25 | 重庆科技学院 | Integrated composite external-driving type bulging device for vehicle drive axle |
| CN105268812A (en) * | 2015-06-19 | 2016-01-27 | 新昌县航达机械制造有限公司 | Large-diameter hydraulic control type T-branch pipe rigid-plasticity combined bulging forming die |
| CN105268809A (en) * | 2015-06-19 | 2016-01-27 | 新昌县航达机械制造有限公司 | Hydraulic control type T-branch pipe rigid-plasticity combined multi-cylinder type bulging forming equipment |
| CN108723163B (en) * | 2018-05-15 | 2019-09-03 | 安徽鼎方金属制品有限公司 | A kind of pipe fitting inflatable thermoforming production equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US1958214A (en) * | 1930-02-07 | 1934-05-08 | Clark Equipment Co | Means for forming the banjo and frame of a rear axle housing |
| US6912884B2 (en) * | 2001-06-25 | 2005-07-05 | Mohamed T. Gharib | Hydroforming process and apparatus for the same |
| JP3572403B2 (en) * | 2002-01-21 | 2004-10-06 | 日産自動車株式会社 | Hydraulic molding apparatus and method for structural parts |
| JP4581473B2 (en) * | 2004-04-28 | 2010-11-17 | 日産自動車株式会社 | Hydraulic molding method and hydraulic molding apparatus |
| CN100413612C (en) * | 2006-10-13 | 2008-08-27 | 燕山大学 | Rotary shell part hydraulic expansion integrating device |
| CN100457308C (en) * | 2006-11-16 | 2009-02-04 | 梅利红 | Roll type cold pressing processing method and device for vehicle driving axle housing |
| CN101823096B (en) * | 2010-04-12 | 2013-05-08 | 燕山大学 | Semi-sliding hydraulic bulging technology of automobile axle housing part and die thereof |
| CN202762907U (en) * | 2012-09-24 | 2013-03-06 | 重庆科技学院 | Automobile drive axle integral combination machinery push-lever type or internal high pressure type bulging device |
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