CN102886467B - Hydraulic press for integral compound bulging of automotive driving axle - Google Patents

Hydraulic press for integral compound bulging of automotive driving axle Download PDF

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Publication number
CN102886467B
CN102886467B CN201210357629.2A CN201210357629A CN102886467B CN 102886467 B CN102886467 B CN 102886467B CN 201210357629 A CN201210357629 A CN 201210357629A CN 102886467 B CN102886467 B CN 102886467B
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China
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hydraulic cylinder
hydraulic
bulging
control valve
directional control
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CN201210357629.2A
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CN102886467A (en
Inventor
朱虹
龚仕林
雷亚
肖大志
徐�明
周雄
董季玲
欧忠文
胡玉梅
刘复元
杜维先
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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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Abstract

The invention discloses a hydraulic press for the integral compound bulging of an automatic driving axle. The hydraulic press comprises a hydraulic press body and a hydraulic bulging system. The hydraulic press body comprises a rack with a workbench. An internal bulging die and an external bulging die are arranged on the workbench. The internal bulging die comprises an upper module and a lower module. The external bulging die comprises an upper external die and a lower external die. An upper die cavity and a lower die cavity are formed on the upper and lower external dies respectively, and are shaped and structured like upper and lower outer sidewalls of a lute package of an axle housing. A left thrust hydraulic cylinder and a right thrust hydraulic cylinder are arranged at the two ends of the workbench respectively. The two ends of the upper and lower modules are hinged with piston rods of the left and right thrust hydraulic cylinders through link mechanisms respectively. At least one multi-stage hydraulic cylinder is arranged between the upper and lower modules. A lifting hydraulic cylinder acting on the upper external die is arranged above the workbench. A jacking hydraulic cylinder acting on the lower external die is arranged below the workbench. A quick disassembly connecting structure is arranged on the piston rod of the left or right thrust hydraulic cylinder.

Description

Automobile drive axle entirety Compound Forming of Bulging hydraulic press
Technical field
The present invention relates to a kind of hydraulic press, concrete is a kind of hydraulic press that meets bulging processing for automobile drive axle entirety.
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 Compound Forming of Bulging hydraulic press, this hydraulic press can be produced required hydraulic coupling is provided for automobile drive axle entirety Compound Forming of Bulging, and 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 there is 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 Compound Forming of Bulging hydraulic press, this automobile drive axle entirety Compound Forming of Bulging hydraulic press can be produced required hydraulic coupling is provided for automobile drive axle entirety Compound Forming of Bulging, the overall process of the continuous bulging of automobile drive axle can be controlled preferably, the demand that automobile drive axle bulging is produced can be met.
Realize above-mentioned technical purpose, automobile drive axle entirety Compound Forming of Bulging hydraulic press of the present invention, comprises hydraulic press body and hydraulic expanding-forming system;
Described hydraulic press body comprises the frame that is provided with workbench, bulging internal mold and bulging adventitia for axle housing workpiece bulging are installed on described workbench, described bulging internal mold comprises respectively wraps with bridge casing lute upper module and the lower module that lower both sides inwall coordinates, described bulging adventitia comprises external mold and lower external mold, and 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;
The two ends of described workbench are respectively equipped with left thrust hydraulic cylinder and the right thrust hydraulic cylinder for apply bulging thrust to bulging internal mold, the two ends of described upper module and lower module are articulated and connected by the piston rod of linkage and left thrust hydraulic cylinder and right thrust hydraulic cylinder respectively, be provided with at least one and apply the multistage hydraulic cylinder perpendicular to axle housing workpiece axial direction hydraulic coupling to it between described upper module and lower module;
The top of described workbench is provided with the lifting hydraulic cylinder acting on described upper external mold, and the below of described workbench is provided with the hydraulic cylinder that ejects acting on described lower external mold;
The piston rod of described left thrust hydraulic cylinder or right thrust hydraulic cylinder is provided with quick-detachment syndeton.
Further, described multistage hydraulic cylinder comprises piston rod II and the stacked hydraulic cylinder body that is set in together and is stretching structure of two-stage at least, described piston rod II is sleeved on the hydraulic cylinder body of innermost layer, between outermost hydraulic cylinder body and piston rod II, form rodless cavity, between the hydraulic cylinder body of innermost layer and piston rod II, 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.
Further, described hydraulic expanding-forming system comprises Main Hydraulic Pump and secondary hydraulic pump, the oil circuit of described Main Hydraulic Pump is provided with booster, described booster is connected with right thrust hydraulic cylinder with left thrust hydraulic cylinder by solenoid directional control valve I respectively, described secondary hydraulic pump respectively by solenoid directional control valve II and lifting hydraulic cylinder with eject hydraulic cylinder and be connected, and described booster is connected with described multistage hydraulic cylinder by the first solenoid directional control valve group, described the first solenoid directional control valve group comprises respectively and described classification oil pocket and the rod end chamber corresponding solenoid directional control valve III arranging and be connected one by one, another interface of described solenoid directional control valve III is connected with described rodless cavity.
Further, described hydraulic expanding-forming system comprises Main Hydraulic Pump and secondary hydraulic pump, the oil circuit of described Main Hydraulic Pump is provided with booster, described booster is connected with described multistage hydraulic cylinder by the second solenoid directional control valve group, described the second solenoid directional control valve group comprises respectively and described classification oil pocket and the rod end chamber corresponding solenoid directional control valve IV arranging and be connected one by one, another interface of described solenoid directional control valve IV is connected with described rodless cavity, described secondary hydraulic pump respectively by solenoid directional control valve V and lifting hydraulic cylinder with eject hydraulic cylinder and be connected, and described secondary hydraulic pump is connected with right thrust hydraulic cylinder with described left thrust hydraulic cylinder by solenoid directional control valve VI respectively.
Further, on described rodless cavity, be also provided with oil-out, described hydraulic expanding-forming system comprises Main Hydraulic Pump and secondary hydraulic pump, the oil circuit of described Main Hydraulic Pump is provided with booster, described booster is connected with described multistage hydraulic cylinder by the 3rd solenoid directional control valve group, described the 3rd solenoid directional control valve group comprises respectively and described classification oil pocket and the rod end chamber corresponding solenoid directional control valve VII arranging and be connected one by one, another interface of described solenoid directional control valve VII is connected with the hydraulic fluid port being arranged on described rodless cavity, the oil return pipe being connected with the oil-out of described rodless cavity is provided with choke valve, described secondary hydraulic pump respectively by solenoid directional control valve VIII and lifting hydraulic cylinder with eject hydraulic cylinder and be connected, and described secondary hydraulic pump is connected with right thrust hydraulic cylinder with described left thrust hydraulic cylinder by solenoid directional control valve IX respectively.
Further, between described booster and Main Hydraulic Pump, be provided with solenoid directional control valve X, between described booster and secondary hydraulic pump, be connected by check valve.
Further, between adjacent two-stage hydraulic cylinder body and between piston rod II 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/piston rod II 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 on the piston rod that is fixedly mounted on left thrust hydraulic cylinder or right thrust hydraulic cylinder, between described hinge seat and described upper module and lower module, is articulated and connected respectively by two hinge bars.
Further, do not arrange the described left thrust hydraulic cylinder of quick-detachment syndeton or the piston rod of right thrust hydraulic cylinder be provided with in logical centre bore, 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 hydraulic oil pipe is installed.
Further, when described upper external mold and lower external mold matched moulds, 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:
Automobile drive axle entirety Compound Forming of Bulging hydraulic press of the present invention by installing bulging internal mold and bulging external mold on workbench, exert pressure to axle housing workpiece by bulging internal mold, make the distortion of axle housing workpiece generation bulging, the upper cavity of bulging adventitia and lower mode cavity are used for limiting the shape after the distortion of axle housing workpiece bulging, and obtain the profile of automobile drive axle housing Chinese lute bag;
By left thrust hydraulic cylinder and right thrust hydraulic cylinder are set, can apply the bulging thrust that is parallel to axle housing workpiece axial direction to bulging internal mold, under the effect of linkage, be decomposed into and act on upper module and the bulging thrust vertical stress component perpendicular to axle housing workpiece axial direction and the parallel component of bulging thrust that is parallel to axle housing workpiece axial direction on lower module;
By multistage hydraulic cylinder is set, for directly applying the vertical hydraulic power perpendicular to axle housing workpiece axial direction to upper module and lower module, under the effect of bulging thrust vertical stress component and vertical hydraulic power, promote upper module and lower module two side shiftings up and down to axle housing workpiece, when the stress being subject to when axle housing workpiece is greater than its yield strength, axle housing workpiece starts to occur bulging distortion, the parallel component of bulging thrust can ensure the not meeting left and right skew in axle housing workpiece bulging deformation process of upper module and lower module, ensures the type quality of the bridge casing lute bag that bulging obtains;
By lifting hydraulic cylinder being set and ejecting hydraulic cylinder, can be used in upper external mold and lower external mold are applied to enough mold clamping forces, in guarantee, external mold and lower external mold keep transfixion in axle housing workpiece bulging deformation process.
Brief description of the drawings
Fig. 1 is the structural representation of automobile drive axle entirety Compound Forming of Bulging hydraulic press of the present invention before the distortion of axle housing workpiece bulging;
Fig. 2 is the structural representation of automobile drive axle entirety Compound Forming of Bulging hydraulic press of the present invention after the distortion of axle housing workpiece bulging;
Fig. 3 is bulging internal model structure schematic diagram;
Fig. 4 is multistage hydraulic cylinder structural representation;
Fig. 5 is the hydraulic diagram of mechanical push rods formula hydraulic expanding-forming system;
Fig. 6 is the hydraulic diagram of inner high voltage formula hydraulic expanding-forming system.;
Fig. 7 is the hydraulic diagram of inner high voltage flow-type hydraulic expanding-forming system;
Fig. 8 is the multistage hydraulic cylinder structural representation that is applicable to inner high voltage flow-type hydraulic expanding-forming system.
Description of reference numerals:
1-frame; 2-workbench; 3-axle housing workpiece; 3a-bridge casing lute bag; 4-bulging internal mold; 4a-upper module; 4b-lower module; 5-bulging external mold; The upper external mold of 5a-; External mold under 5b-; 5c-upper cavity; 5d-lower mode cavity; The left thrust hydraulic cylinder of 6-; The right thrust hydraulic cylinder of 7-; 8-multistage hydraulic cylinder; 8a-piston rod II; 8b-hydraulic cylinder body; 8c-rodless cavity; 8d-rod end chamber; 8e-classification oil pocket; 8f-hydraulic fluid port; 8g-inner baffle ring; 8h-outer baffle ring; 9-lifting hydraulic cylinder; 10-ejects hydraulic cylinder; 11-quick-detachment syndeton; 12-hinge seat; The two hinge bars of 13-; 14-hollow tube; 15-Main Hydraulic Pump; The secondary hydraulic pump of 16-; 17-booster; 18-solenoid directional control valve I; 19-solenoid directional control valve II; 20-solenoid directional control valve III; 21-solenoid directional control valve X; 22-solenoid directional control valve IV; 23-solenoid directional control valve V; 24-solenoid directional control valve VI; 25-check valve; 26-choke valve; 27-solenoid directional control valve VII; 28-solenoid directional control valve VIII; 29-solenoid directional control valve IX.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
As shown in Figure 1, be the structural representation of automobile drive axle entirety Compound Forming of Bulging hydraulic press of the present invention before the distortion of axle housing workpiece bulging; Fig. 2 is the structural representation of automobile drive axle entirety Compound Forming of Bulging hydraulic press of the present invention after the distortion of axle housing workpiece bulging.
The automobile drive axle entirety Compound Forming of Bulging hydraulic press of the present embodiment, comprises hydraulic press body and hydraulic expanding-forming system; Hydraulic press body comprises the frame 1 that is provided with workbench 2, bulging internal mold 4 and bulging adventitia 5 for axle housing workpiece 3 bulgings are installed on workbench 2, bulging internal mold 4 comprises the upper module 4a and the lower module 4b that coordinate with the upper and lower both sides of bridge casing lute bag 3a inwall respectively, bulging adventitia 5 comprises external mold 5a and lower external mold 5b, upper external mold 5a with on lower external mold 5b, be respectively equipped with upper cavity 5c and the lower mode cavity 5d identical with the upper and lower both sides of bridge casing lute bag 3a outer wall shape and structure.Bulging internal mold 4 is placed in axle housing workpiece 3, and bulging external mold 5 correspondences are arranged on outside axle housing workpiece 3, can limit the deformation range of axle housing workpiece 5 by bulging internal mold 4 and bulging adventitia 5, and final bulging obtains bridge casing lute bag 3a.Preferably, when upper external mold 5a and lower external mold 5b matched moulds, upper cavity 5c and the lower mode cavity 5d composition bulging chamber identical with the outer wall shape and structure of bridge casing lute bag 3a.Adopt the bulging external mold 5 of this structure, employing will be carried out bulging after upper external mold 5a and lower external mold 5b closure, is convenient to locate between external mold 5a and lower external mold 5b, is more convenient for applying mold clamping force to bulging external mold 5.
The two ends of workbench 2 are respectively equipped with left thrust hydraulic cylinder 6 and the right thrust hydraulic cylinder 7 for apply bulging thrust to bulging internal mold 4, as shown in Figure 3, the two ends of upper module 4a and lower module 4b are articulated and connected by the piston rod of linkage and left thrust hydraulic cylinder 6 and right thrust hydraulic cylinder 7 respectively, between upper module 4a and lower module 4b, be provided with at least one and apply the multistage hydraulic cylinder 8 perpendicular to axle housing workpiece 3 axial direction hydraulic couplings to it, be that multistage hydraulic cylinder 8 applies the vertical hydraulic power perpendicular to axle housing workpiece 3 axial directions to upper module 4a and lower module 4b respectively, upper module 4a and lower module 4b open or close up under the effect of vertical hydraulic power.
The top of workbench 2 is provided with the lifting hydraulic cylinder 9 acting on external mold 5a, the below of workbench 2 is provided with to act on and ejects hydraulic cylinder 10 on lower external mold 5b, lifting hydraulic cylinder 9 and eject hydraulic cylinder 10 for upper external mold 5a and lower external mold 5b are applied to mold clamping force, in guarantee, external mold 5a and lower external mold 5b keep transfixion in axle housing workpiece 3 bulging deformation processes.The lifting hydraulic cylinder 9 of the present embodiment coaxially arranges with the piston rod axis that ejects hydraulic cylinder 10, avoids bulging adventitia 5 to apply moment of torsion.
The piston rod of left thrust hydraulic cylinder 6 or right thrust hydraulic cylinder 7 is provided with quick-detachment syndeton 11, and the quick-detachment syndeton 11 of the present embodiment is arranged on right thrust hydraulic cylinder 7 piston rods.By quick-detachment syndeton 11 is set, the piston rod of right thrust hydraulic cylinder 7 and bulging internal mold 4, left thrust hydraulic cylinder 6 can be separated, be convenient to before bulging, bulging internal mold 4 is positioned in the endoporus of axle housing workpiece 3.
The automobile drive axle entirety Compound Forming of Bulging hydraulic press of the present embodiment by installing bulging internal mold 4 and bulging external mold 5 on workbench 2, exert pressure to axle housing workpiece 3 by bulging internal mold 1, make axle housing workpiece 3 that bulging distortion occur, the upper cavity 5c of bulging adventitia 5 and lower mode cavity 5d are used for limiting the shape after the 3 bulgings distortion of axle housing workpiece, and obtain the profile of automobile drive axle housing Chinese lute bag 3a.
By left thrust hydraulic cylinder 6 and right thrust hydraulic cylinder 7 are set, can apply the bulging thrust that is parallel to axle housing workpiece 3 axial directions to bulging internal mold 4, under the effect of linkage, be decomposed into and act on upper module 4a and the bulging thrust vertical stress component perpendicular to axle housing workpiece 3 axial directions and the parallel component of bulging thrust that is parallel to axle housing workpiece 3 axial directions on lower module 4b.By multistage hydraulic cylinder 8 is set, for directly applying the vertical hydraulic power perpendicular to axle housing workpiece 3 axial directions to upper module 4a and lower module 4b, under the effect of bulging thrust vertical stress component and vertical hydraulic power, promote upper module 4a and lower module 4b two side shiftings up and down to axle housing workpiece, when the stress being subject to when axle housing workpiece 3 is greater than its yield strength, axle housing workpiece 3 starts to occur bulging distortion, the parallel component of bulging thrust can ensure upper module 4a and lower module 4b not meeting left and right skew in axle housing workpiece 3 bulging deformation processes, ensure the type quality of the bridge casing lute bag 3a that bulging obtains.By lifting hydraulic cylinder 9 being set and ejecting hydraulic cylinder 10, can be used in upper external mold 5a and lower external mold 5b are applied to enough mold clamping forces, in guarantee, external mold 5a and lower external mold 5b keep transfixion in axle housing workpiece bulging deformation process.
As shown in Figure 4, multistage hydraulic cylinder 8 comprises piston rod II 8a and the stacked hydraulic cylinder body 8b that is set in together and is stretching structure of two-stage at least, piston rod II 8a is sleeved on the hydraulic cylinder body 8b of innermost layer, between outermost hydraulic cylinder body 8b and piston rod II 8a, form rodless cavity 8c, between the hydraulic cylinder body 8b of innermost layer and piston rod II 8a, form rod end chamber 8d, between adjacent two-stage hydraulic cylinder body 8b, form classification oil pocket 8e, described rodless cavity 8c, rod end chamber 8d are equipped with on classification oil pocket 8e the hydraulic fluid port 8f being connected with hydraulic power source.As shown in Figure 1, the multistage hydraulic cylinder 8 of the present embodiment is set to 2, between the outermost layer hydraulic cylinder body 8b of one of them multistage hydraulic cylinder 8 and lower module 4b, be threaded connection structure and be fixedly connected with, piston rod II 8a is fixedly mounted on upper module 4a by threaded fastener; Between the outermost layer hydraulic cylinder body 8b of another multistage hydraulic cylinder 8 and upper module 4a, be threaded connection structure and be fixedly connected with, piston rod II 8a is fixedly mounted on lower module 4b by threaded fastener.The multistage hydraulic cylinder 8 of the present embodiment comprises three grades of stacked high pressure liquid cylinder pressure cylinder body 8b that are set in together and are stretching structure.
Adopt the multistage hydraulic cylinder 8 of this structure, outwards provide in the process of hydraulic thrust at piston rod II 8a, rodless cavity 8c oil-feed, rod end chamber 8d and the equal oil return of classification oil pocket 8e, can realize multistage hydraulic cylinder 8 elongations and hydraulic coupling is outwards provided; In like manner, in the time that piston rod II 8a bounces back, rodless cavity 8c oil return, rod end chamber 8d and the equal oil-feed of classification oil pocket 8e, can realize piston rod II 8a retraction.
Because the diameter of bore of axle housing workpiece 3 is very little, and bridge casing lute bag 3a 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 hydraulic cylinder 8 of the present embodiment, be set to stacked be set in together at least two-layer mutually by hydraulic cylinder body 8b, not only can effectively dwindle required space is installed, and form stretching structure between hydraulic cylinder body 8b, by elongation and the shortening of hydraulic cylinder body 8b, the hydraulic coupling stroke that can effectively improve multistage hydraulic cylinder 8, can meet instructions for use.
Preferably, between adjacent two-stage hydraulic cylinder body 8b and between piston rod II 8a and innermost layer hydraulic cylinder body 8b, the top that is positioned at outer field hydraulic cylinder body 8b is provided with the inner baffle ring 8g extending radially inwardly, the bottom that is positioned at the hydraulic cylinder body 8b/ piston rod II 8a of internal layer is provided with the outer baffle ring 8h extending radially outwardly and coordinate with inner baffle ring 8g, between the periphery wall of inner baffle ring 8g and internal layer hydraulic cylinder body 8b, be provided with hermetically-sealed construction, between outer baffle ring 8h and the internal perisporium of outer hydraulic cylinder body 8b, be provided with hermetically-sealed construction.Adopt the multistage hydraulic cylinder 8 of this structure, between inner baffle ring 8g and outer baffle ring 8h, form position-limit mechanism, prevent from departing between adjacent two-stage hydraulic cylinder body 8b and innermost layer hydraulic cylinder body 8b and piston rod II 8a.Preferably, the hydraulic fluid port 8f being arranged on rod end chamber 8d and classification oil pocket 8e is arranged on inner baffle ring 6g above, prevents that multistage hydraulic cylinder 8 is in telescopic process, between hydraulic cylinder body 8b and hydraulic fluid port 8f, interferes.Be arranged on the bottom that hydraulic fluid port 8f on rodless cavity 8c is positioned at outermost layer hydraulic cylinder body 8b, upper module 4a or lower module 4b are provided with the oil circuit communicating with the hydraulic fluid port 8f of rodless cavity 8c.
As shown in Figure 3, linkage comprises the hinge seat 12 on the piston rod that is fixedly mounted on left thrust hydraulic cylinder 6 or right thrust hydraulic cylinder 7, between hinge seat 12 and upper module 4a and lower module 4b, is articulated and connected respectively by two hinge bars 13.Adopt the linkage of this structure, between the piston rod of two hinge bars 13 and left thrust hydraulic cylinder 6 or right thrust hydraulic cylinder 7, there is angle, the bulging thrust of left thrust hydraulic cylinder 6 and right thrust hydraulic cylinder 7 can be decomposed into the required bulging thrust vertical stress component perpendicular to axle housing workpiece axial direction of upper module 4a and lower module 4b, and be accompanied by the increase of workpiece bulging deflection, angle between two hinge bars 13 and the thrust hydraulic cylinder piston rod of linkage increases, and can increase bulging thrust vertical stress component.
As depicted in figs. 1 and 2, logical centre bore during the piston rod that the left thrust hydraulic cylinder 6 of quick-detachment syndeton 11 is not set is provided with, and be equipped with the through hole coaxial with centre bore on the cylinder body of left thrust hydraulic cylinder 6 with on the hinge seat 12 being connected with left thrust hydraulic cylinder 6, in centre bore and through hole, be provided with the hollow tube 14 for hydraulic oil pipe is installed, hollow tube 14 extends through centre bore and through hole, and the hydraulic oil pipe between hydraulic fluid port 8f and hydraulic power source is arranged in hollow tube 14.Because the internal diameter of axle housing workpiece 3 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 8f and hydraulic power source, extend through the hollow tube 14 of left thrust hydraulic cylinder 6 and hinge seat 12 by setting, hydraulic oil pipe can be arranged in hollow tube 14, prevent friction damage between hydraulic oil pipe and thrust hydraulic cylinder piston rod and linkage, and provide high pressure liquid force feed for multistage hydraulic cylinder 8.
The automobile drive axle entirety Compound Forming of Bulging hydraulic press of the present embodiment can be according to the difference of bulging process method, adopts different hydraulic expanding-forming systems supporting with it.
As shown in Figure 5, for the hydraulic diagram of mechanical push rods formula hydraulic expanding-forming system, this hydraulic expanding-forming system comprises Main Hydraulic Pump 15 and secondary hydraulic pump 16, the oil circuit of Main Hydraulic Pump 15 is provided with booster 17,17 points of boosters are connected with right thrust hydraulic cylinder 7 with left thrust hydraulic cylinder 6 by solenoid directional control valve I 18, solenoid directional control valve I 18 can be one, also can be two, the solenoid directional control valve I 18 of the present embodiment is two, and booster 17 is connected with right thrust hydraulic cylinder 7 with left thrust hydraulic cylinder 6 by two solenoid directional control valve I 18 respectively.
Booster 17 respectively by solenoid directional control valve II 19 and lifting hydraulic cylinder 9 with eject hydraulic cylinder 10 and be connected, solenoid directional control valve II 19 can be one, also can be two, the solenoid directional control valve II 19 of the present embodiment is two, secondary hydraulic pump 16 respectively by two solenoid directional control valve II 19 and lifting hydraulic cylinder 9 with eject hydraulic cylinder 10 and be connected.
Booster 17 is connected with multistage hydraulic cylinder 8 by the first solenoid directional control valve group, the first solenoid directional control valve group comprises respectively and classification oil pocket 8e and the rod end chamber 8d corresponding solenoid directional control valve III 20 arranging and be connected one by one, another interface of solenoid directional control valve III 20 is connected with rodless cavity 8c, the multistage hydraulic cylinder 8 of the present embodiment is provided with two classification oil pocket 8e and a rod end chamber 8d, be that solenoid directional control valve III 20 is three, each solenoid directional control valve III 20 is connected from same level classification oil pocket 8e or the rod end chamber 8d of different multistage hydraulic cylinders 8 accordingly, same level classification oil pocket 8e refers to the identical classification oil pocket 8e of quantity of the hydraulic cylinder body 8b at institute interval between outermost layer hydraulic cylinder body 8b.
As shown in Figure 5, left thrust hydraulic cylinder 6, right thrust hydraulic cylinder 7, lifting hydraulic cylinder 9, eject hydraulic cylinder 10 and be all connected with oil-recovery tank with choke valve 26 by solenoid directional control valve with multistage hydraulic cylinder 8.Between the booster 17 of the present embodiment and Main Hydraulic Pump 15, be provided with solenoid directional control valve X 21, between booster 17 and secondary hydraulic pump 16, be connected by check valve 25, on the oil-out of Main Hydraulic Pump 15, secondary hydraulic pump 16 and booster 17, be equipped with the check valve that prevents that hydraulic oil from refluxing.
Adopt the mechanical push rods formula hydraulic expanding-forming system of this structure, because Main Hydraulic Pump 15 is connected with multistage hydraulic cylinder, left thrust hydraulic cylinder 6 and right thrust hydraulic cylinder 7, be that left thrust hydraulic cylinder 6 and right thrust hydraulic cylinder 7 apply the bulging thrust that is parallel to axle housing workpiece 3 axial directions to bulging internal mold 4, multistage hydraulic cylinder applies the vertical hydraulic power that is parallel to axle housing workpiece 3 axial directions to bulging internal mold 4, the bulging power that axle housing workpiece 3 is subject to is making a concerted effort of bulging thrust vertical stress component and vertical hydraulic power, makes axle housing workpiece 3 that bulging distortion occur.
Because the diameter of bore of the axle housing workpiece 3 for the production of automobile drive axle housing is generally all less, cause two hinge bars 13 very little with the angle of the piston rod axis of thrust hydraulic cylinder, the bulging thrust vertical stress component being decomposed into by the bulging thrust of thrust hydraulic cylinder is very little, and the required bulging power of extruding axle housing workpiece deformation is generally larger, iff adopting linkage to connect thrust hydraulic cylinder and bulging internal mold 4, may cause upper module 4a and lower module 4b successfully to open to the both sides up and down of axle housing workpiece 3, cannot realize bulging, the multistage hydraulic cylinder 8 that auxiliary upper module 4a and lower module 4b open now need to be set between upper module 4a and lower module 4b, it can provide upper module 4a and lower module 4b separately or the vertical hydraulic power of closing up, vertical hydraulic power is perpendicular to the axial direction of axle housing workpiece, can be used as the important supplement of bulging thrust vertical stress component in the initial bulging stage of axle housing workpiece 3, upper module 4a and lower module 4b are opened, force axle housing workpiece 3 to be out of shape.
As shown in Figure 6, be the hydraulic diagram of inner high voltage formula hydraulic expanding-forming system.This hydraulic expanding-forming system comprises Main Hydraulic Pump 15 and secondary hydraulic pump 16, the oil circuit of Main Hydraulic Pump 15 is provided with booster 17, booster 17 is connected with multistage hydraulic cylinder 8 by the second solenoid directional control valve group, the second solenoid directional control valve group comprises respectively and classification oil pocket 8e and the rod end chamber 8d corresponding solenoid directional control valve IV 22 arranging and be connected one by one, another interface of solenoid directional control valve IV 22 is connected with rodless cavity 8c, the multistage hydraulic cylinder 8 of the present embodiment is provided with two classification oil pocket 8e and a rod end chamber 8d, be that solenoid directional control valve IV 22 is three, each solenoid directional control valve IV 22 is connected from same level classification oil pocket 8e or the rod end chamber 8d of different multistage hydraulic cylinders 8 accordingly, same level classification oil pocket 8e refers to the identical classification oil pocket 8e of quantity of the hydraulic cylinder body 8b at institute interval between outermost layer hydraulic cylinder body 8b.
Secondary hydraulic pump 16 respectively by solenoid directional control valve V 23 and lifting hydraulic cylinder 9 with eject hydraulic cylinder 10 and be connected, solenoid directional control valve V 23 can be one, also can be two, the secondary hydraulic pump 16 of the present embodiment by two solenoid directional control valve V, 23 solenoid directional control valve V 23 and lifting hydraulic cylinder 9 with eject hydraulic cylinder 10 and be connected.
Secondary hydraulic pump 16 is connected with right thrust hydraulic cylinder 7 with left thrust hydraulic cylinder 6 by solenoid directional control valve VI 24 respectively, solenoid directional control valve VI 24 can be one, also can be two, the secondary hydraulic pump 16 of the present embodiment is connected with right thrust hydraulic cylinder 7 with left thrust hydraulic cylinder 6 by two solenoid directional control valve VI 24 respectively.
As shown in Figure 6, left thrust hydraulic cylinder 6, right thrust hydraulic cylinder 7, lifting hydraulic cylinder 9, eject hydraulic cylinder 10 and be all connected with oil-recovery tank with choke valve 26 by solenoid directional control valve with multistage hydraulic cylinder 8.Between the booster 17 of the present embodiment and Main Hydraulic Pump 15, be provided with solenoid directional control valve X 21, between booster 17 and secondary hydraulic pump 16, be connected by check valve 25, on the oil-out of Main Hydraulic Pump 15, secondary hydraulic pump 16 and booster 17, be equipped with the check valve that prevents that hydraulic oil from refluxing.
Adopt this inner high voltage formula hydraulic expanding-forming system, because Main Hydraulic Pump 15 is connected with multistage hydraulic cylinder 8, the vertical hydraulic power that to be multistage hydraulic cylinder 8 apply to upper module 4a and lower module 4b is the main power that makes the distortion of axle housing workpiece bulging, the vertical hydraulic power that multistage hydraulic cylinder 8 applies to upper module 4a and lower module 4b is greater than the bulging thrust that left thrust hydraulic cylinder 6 and right thrust hydraulic cylinder 7 apply to bulging internal mold 4, the bulging power that axle housing workpiece 3 is subject to is making a concerted effort of bulging thrust vertical stress component and vertical hydraulic power, taking vertical hydraulic power under the effect of main bulging power, there is bulging distortion in axle housing workpiece 3.
Because the diameter of bore of the axle housing workpiece 3 for the production of automobile drive axle housing is generally all less, and bridge casing lute bag 3a 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; The multistage hydraulic cylinder 8 of the present embodiment, be set to stacked be set in together at least two-layer mutually by hydraulic cylinder body 8b, not only can effectively dwindle required space is installed, and form stretching structure between hydraulic cylinder body 8b, by elongation and the shortening of hydraulic cylinder body 8b, the hydraulic coupling stroke that can effectively improve multistage hydraulic cylinder 8, can meet instructions for use.
It should be noted that, the multistage hydraulic cylinder 8 of the present embodiment is set to two, and according to actual needs, multistage hydraulic cylinder 8 also can be set to one or more, and its principle, with that two multistage hydraulic cylinders 8 are set is identical, is not repeated.
As shown in Figure 7, be the hydraulic diagram of inner high voltage flow-type hydraulic expanding-forming system.This hydraulic expanding-forming system comprises Main Hydraulic Pump 15 and secondary hydraulic pump 16, the oil circuit of Main Hydraulic Pump 15 is provided with booster 17, booster 17 is connected with multistage hydraulic cylinder 8 by the 3rd solenoid directional control valve group, the 3rd solenoid directional control valve group comprises respectively and classification oil pocket 8e and the rod end chamber 8d corresponding solenoid directional control valve VII 27 arranging and be connected one by one, another interface of solenoid directional control valve VII 27 is connected with the hydraulic fluid port 8f being arranged on rodless cavity 8c, as shown in Figure 8, be applicable to also be provided with oil-out 8i on the rodless cavity 8c of multistage hydraulic cylinder 8 of inner high voltage flow-type hydraulic expanding-forming system, the oil return pipe being connected with the oil-out 8i of rodless cavity 8c is provided with choke valve 27.When multistage hydraulic cylinder 8 is provided with when multiple, each solenoid directional control valve VII 27 is connected from same level classification oil pocket 8e or the rod end chamber 8d of different multistage hydraulic cylinders 8 accordingly, same level classification oil pocket 8e refers to the identical classification oil pocket 8e of quantity of the hydraulic cylinder body 8b at institute interval between outermost layer hydraulic cylinder body 8b, to ensure that each multistage hydraulic cylinder 8 can synchronization action.
Secondary hydraulic pump 16 respectively by solenoid directional control valve VIII 28 with lifting hydraulic cylinder 9 with eject hydraulic cylinder 10 and be connected, and secondary hydraulic pump 16 passes through respectively solenoid directional control valve IX 29 and is connected with right thrust hydraulic cylinder 7 with left thrust hydraulic cylinder 6.Solenoid directional control valve VIII 28 can be one, also can be two, the secondary hydraulic pump 16 of the present embodiment respectively by two solenoid directional control valve VIII 28 and lifting hydraulic cylinder 9 with eject hydraulic cylinder 10 and be connected.Solenoid directional control valve IX 29 can be one, also can be two, and the secondary hydraulic pump 16 of the present embodiment is connected with right thrust hydraulic cylinder 7 with left thrust hydraulic cylinder 6 by two respectively.
As shown in Figure 7, left thrust hydraulic cylinder 6, right thrust hydraulic cylinder 7 and multistage hydraulic cylinder 8 are all connected with oil-recovery tank with choke valve 26 by solenoid directional control valve.Between the booster 17 of the present embodiment and Main Hydraulic Pump 15, be provided with solenoid directional control valve X 21, between booster 17 and secondary hydraulic pump 16, be connected by check valve 25, on the oil-out of Main Hydraulic Pump 15, secondary hydraulic pump 16 and booster 17, be equipped with the check valve that prevents that hydraulic oil from refluxing.
Adopt this inner high voltage flow-type hydraulic expanding-forming system, because Main Hydraulic Pump 15 is connected with multistage hydraulic cylinder 8, the vertical hydraulic power that to be multistage hydraulic cylinder 8 apply to upper module 4a and lower module 4b is the main power that makes the distortion of axle housing workpiece bulging, the vertical hydraulic power that multistage hydraulic cylinder 8 applies to upper module 4a and lower module 4b is greater than the bulging thrust that left thrust hydraulic cylinder 6 and right thrust hydraulic cylinder 7 apply to bulging internal mold 4, the bulging power that axle housing workpiece 3 is subject to is making a concerted effort of bulging thrust vertical stress component and vertical hydraulic power, taking vertical hydraulic power under the effect of main bulging power, there is bulging distortion in axle housing workpiece 3.
Because the diameter of bore of the axle housing workpiece 3 for the production of automobile drive axle housing is generally all less, and bridge casing lute bag 3a 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; The multistage hydraulic cylinder 8 of the present embodiment, be set to stacked be set in together at least two-layer mutually by hydraulic cylinder body 8b, not only can effectively dwindle required space is installed, and form stretching structure between hydraulic cylinder body 8b, by elongation and the shortening of hydraulic cylinder body 8b, the hydraulic coupling stroke that can effectively improve multistage hydraulic cylinder 8, can meet instructions for use.
In the bulging production process of automobile drive axle housing, generally need to heat axle housing workpiece 3, to improve the plastic deformation ability of axle housing workpiece 3, and reduce axle housing workpiece 3 bulgings and be out of shape required bulging power, the temperature of heating is generally 200-600 DEG C of left and right, but because hydraulic oil at high temperature can go bad, the vertical hydraulic power that may cause multistage hydraulic cylinder 8 to be exported is not enough or unstable, cause bulging to carry out, by be provided for hydraulic fluid port 8f and the oil-out 8i of hydraulic oil circulation in the rodless cavity 8c of multistage hydraulic cylinder 8, high pressure liquid force feed enters rodless cavity 8c from hydraulic fluid port 8f, and flow out rodless cavity 8c from oil-out 8i, when required vertical hydraulic power is provided, make hydraulic oil keep the circulation of given pace, prevent analysis of hydraulic oil overheat.
It should be noted that, the multistage hydraulic cylinder 8 of the present embodiment is set to two, and according to actual needs, multistage hydraulic cylinder 8 also can be set to one or more, and its principle, with that two multistage hydraulic cylinders 8 are set is identical, is not repeated.
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. an automobile drive axle entirety Compound Forming of Bulging hydraulic press, comprises hydraulic press body and hydraulic expanding-forming system, it is characterized in that:
Described hydraulic press body comprises the frame that is provided with workbench, bulging internal mold and bulging adventitia for axle housing workpiece bulging are installed on described workbench, described bulging internal mold comprises respectively wraps with bridge casing lute upper module and the lower module that lower both sides inwall coordinates, described bulging adventitia comprises external mold and lower external mold, and 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;
The two ends of described workbench are respectively equipped with left thrust hydraulic cylinder and the right thrust hydraulic cylinder for apply bulging thrust to bulging internal mold, the two ends of described upper module and lower module are articulated and connected by the piston rod of linkage and left thrust hydraulic cylinder and right thrust hydraulic cylinder respectively, be provided with at least one and apply the multistage hydraulic cylinder perpendicular to axle housing workpiece axial direction hydraulic coupling to it between described upper module and lower module;
The top of described workbench is provided with the lifting hydraulic cylinder acting on described upper external mold, and the below of described workbench is provided with the hydraulic cylinder that ejects acting on described lower external mold;
The piston rod of described left thrust hydraulic cylinder or right thrust hydraulic cylinder is provided with quick-detachment syndeton.
2. automobile drive axle entirety Compound Forming of Bulging hydraulic press according to claim 1, it is characterized in that: described multistage hydraulic cylinder comprises piston rod II and the stacked hydraulic cylinder body that is set in together and is stretching structure of two-stage at least, described piston rod II is sleeved on the hydraulic cylinder body of innermost layer, between outermost hydraulic cylinder body and piston rod II, form rodless cavity, between the hydraulic cylinder body of innermost layer and piston rod II, form rod end chamber, between adjacent two-stage hydraulic cylinder body, form classification oil pocket, described rodless cavity, rod end chamber is equipped with on classification oil pocket the hydraulic fluid port being connected with hydraulic power source.
3. automobile drive axle entirety Compound Forming of Bulging hydraulic press according to claim 2, it is characterized in that: described hydraulic expanding-forming system comprises Main Hydraulic Pump and secondary hydraulic pump, the oil circuit of described Main Hydraulic Pump is provided with booster, described booster is connected with right thrust hydraulic cylinder with left thrust hydraulic cylinder by solenoid directional control valve I respectively, described secondary hydraulic pump respectively by solenoid directional control valve II and lifting hydraulic cylinder with eject hydraulic cylinder and be connected, and described booster is connected with described multistage hydraulic cylinder by the first solenoid directional control valve group, described the first solenoid directional control valve group comprises respectively and described classification oil pocket and the rod end chamber corresponding solenoid directional control valve III arranging and be connected one by one, another interface of described solenoid directional control valve III is connected with described rodless cavity.
4. automobile drive axle entirety Compound Forming of Bulging hydraulic press according to claim 2, it is characterized in that: described hydraulic expanding-forming system comprises Main Hydraulic Pump and secondary hydraulic pump, the oil circuit of described Main Hydraulic Pump is provided with booster, described booster is connected with described multistage hydraulic cylinder by the second solenoid directional control valve group, described the second solenoid directional control valve group comprises respectively and described classification oil pocket and the rod end chamber corresponding solenoid directional control valve IV arranging and be connected one by one, another interface of described solenoid directional control valve IV is connected with described rodless cavity, described secondary hydraulic pump respectively by solenoid directional control valve V and lifting hydraulic cylinder with eject hydraulic cylinder and be connected, and described secondary hydraulic pump is connected with right thrust hydraulic cylinder with described left thrust hydraulic cylinder by solenoid directional control valve VI respectively.
5. automobile drive axle entirety Compound Forming of Bulging hydraulic press according to claim 2, it is characterized in that: on described rodless cavity, be also provided with oil-out, described hydraulic expanding-forming system comprises Main Hydraulic Pump and secondary hydraulic pump, the oil circuit of described Main Hydraulic Pump is provided with booster, described booster is connected with described multistage hydraulic cylinder by the 3rd solenoid directional control valve group, described the 3rd solenoid directional control valve group comprises respectively and described classification oil pocket and the rod end chamber corresponding solenoid directional control valve VII arranging and be connected one by one, another interface of described solenoid directional control valve VII is connected with the hydraulic fluid port being arranged on described rodless cavity, the oil return pipe being connected with the oil-out of described rodless cavity is provided with choke valve, described secondary hydraulic pump respectively by solenoid directional control valve VIII and lifting hydraulic cylinder with eject hydraulic cylinder and be connected, and described secondary hydraulic pump is connected with right thrust hydraulic cylinder with described left thrust hydraulic cylinder by solenoid directional control valve IX respectively.
6. according to the automobile drive axle entirety Compound Forming of Bulging hydraulic press described in claim 3-5 any one, it is characterized in that: between described booster and Main Hydraulic Pump, be provided with solenoid directional control valve X, between described booster and secondary hydraulic pump, be connected by check valve.
7. according to the automobile drive axle entirety Compound Forming of Bulging hydraulic press described in claim 2-5 any one, it is characterized in that: between adjacent two-stage hydraulic cylinder body and between piston rod II 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 piston rod II 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.
8. automobile drive axle entirety Compound Forming of Bulging hydraulic press according to claim 7, 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.
9. according to the automobile drive axle entirety Compound Forming of Bulging hydraulic press described in claim 1-5 any one, it is characterized in that: described linkage comprises the hinge seat on the piston rod that is fixedly mounted on left thrust hydraulic cylinder or right thrust hydraulic cylinder, between described hinge seat and described upper module and lower module, be articulated and connected by two hinge bars respectively.
10. automobile drive axle entirety Compound Forming of Bulging hydraulic press according to claim 9, it is characterized in that: do not arrange the described left thrust hydraulic cylinder of quick-detachment syndeton or the piston rod of right thrust hydraulic cylinder be provided with in logical centre bore, 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 hydraulic oil pipe is installed; When described upper external mold and lower external mold matched moulds, described upper cavity and the lower mode cavity composition bulging chamber identical with the outer wall shape and structure of bridge casing lute bag.
CN201210357629.2A 2012-09-24 2012-09-24 Hydraulic press for integral compound bulging of automotive driving axle Expired - Fee Related CN102886467B (en)

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SU721191A1 (en) * 1976-12-09 1980-03-15 Предприятие П/Я Р-6543 Method and apparatus for producing driving-axle housing beam
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CN102319826A (en) * 2011-07-14 2012-01-18 燕山大学 Steel tube swelling press forming method for large-sized automobile axle housing
CN102581051A (en) * 2011-11-16 2012-07-18 三门峡合鑫机床有限公司 Cold extrusion forming method for lute hole of axle housing of automobile drive axle and pressing die forming machine tool
CN202762903U (en) * 2012-09-24 2013-03-06 重庆科技学院 Automobile drive axle integral combination bulging hydraulic machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU721191A1 (en) * 1976-12-09 1980-03-15 Предприятие П/Я Р-6543 Method and apparatus for producing driving-axle housing beam
EP0876859A2 (en) * 1997-05-09 1998-11-11 Daimler-Benz Aktiengesellschaft Method and apparatus for making axle housings for motor vehicle
JP2004138222A (en) * 2002-10-21 2004-05-13 Kayaba Ind Co Ltd Multistage cylinder device
JP2006298236A (en) * 2005-04-22 2006-11-02 Press Kogyo Co Ltd Axle housing, and hydroforming method and device
JP2007283389A (en) * 2006-04-19 2007-11-01 Press Kogyo Co Ltd Hydroforming apparatus and hydroforming method
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CN102319826A (en) * 2011-07-14 2012-01-18 燕山大学 Steel tube swelling press forming method for large-sized automobile axle housing
CN102581051A (en) * 2011-11-16 2012-07-18 三门峡合鑫机床有限公司 Cold extrusion forming method for lute hole of axle housing of automobile drive axle and pressing die forming machine tool
CN202762903U (en) * 2012-09-24 2013-03-06 重庆科技学院 Automobile drive axle integral combination bulging hydraulic machine

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