CN101185946A - Roll type cold pressing processing method and device for vehicle driving axle housing - Google Patents
Roll type cold pressing processing method and device for vehicle driving axle housing Download PDFInfo
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- CN101185946A CN101185946A CNA2006101384790A CN200610138479A CN101185946A CN 101185946 A CN101185946 A CN 101185946A CN A2006101384790 A CNA2006101384790 A CN A2006101384790A CN 200610138479 A CN200610138479 A CN 200610138479A CN 101185946 A CN101185946 A CN 101185946A
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Abstract
A roll typed impact extrusion processing method and a device of an automobile drive axle housing adopts roll typed impact extrusion technique to manufacture a lute-shaped housing expanded from the middle of the driving axle housing, namely, axial compressive force is loaded to the both ends of the axle housing roughcast or the semi-finished product; in the forming die, dedicated roll pressured rolling of the driving gear is adopted to implement repeated rolling and progressive roll typed impact extrusion operation to the inner wall of the workpiece, and processes the workpiece into the needed axle housing shape. As a lute-shaped hole of the middle of the axle housing is molded by reaming and roll typed impact extrusion technology, the volume of the metal material is progressively transferred for a plurality of times, and the thickness of the deformation part of the material basically remains unchanged, so that the metallurgical structure of the steels of the area is compact, furthermore, surface hardening greatly strengthens all the mechanical performance of the corresponding parts of the axle housing body, and improves the integral mechanical strength and rigidity of the axle housing. The method has the advantages of simple technique, convenient operation, little investment of the dedicated device and die, reliable work, and simple and easy product model conversion, which is suitable for batch produce with a plurality of varieties.
Description
Technical field
The present invention relates to a kind of process and device of new manufacturing automobile axle housing, exactly, the roll type cold pressing processing method and the isolated plant that relate to a kind of vehicle driving axle housing belong to the metal forming technical field of not having machining or processing substantially of metallic plate or pipe, rod or section bar.
Background technology
The vehicle bridge of automobile is used to support the various load on vehicle body and the vehicle frame and passes to wheel, to regulate car load kinematics and dynamic performance.Function classification according to vehicle bridge has four kinds of vehicle bridge: drive axle, steeraxle, steering and driving axle and supporting bridge.Wherein the composition member of drive axle mainly comprises: axle housing 3; difference-speed reducer assembly 2; semiaxis 1; parts (referring to Fig. 1) such as wheel hub brake drum assembly 4 and brake assembly 5; wherein driving axle housing 3 is that poor-speed reducer assembly 2 is installed; semiaxis 1; wheel hub brake drum assembly 4; the automobile power basic component of brake assembly 5 and suspension; except being used for supporting and the poor-speed reducer assembly 2 of protection; driving members such as semiaxis 1 and wheel hub brake drum assembly 4; it is had outside the good transmission performance; also will be as the crossbeam of support drive wheel; make left; the right axial location that drives wheel keeps relative fixed; and make and to bear the vehicle body on the leaf spring and the carload weight on vehicle frame top together as the drive axle of the primary clustering of automobile running system and supporting bridge; and when running car; bear the various driving forces that power transmission shaft passes over; brake force and braking moment that driving moment and when braking produce, and pass to vehicle frame by suspension.Therefore, the axle housing that drives vehicle bridge is to guarantee the functional reliability of the normal operation of automobile and the critical component in service life, and it all has higher requirements to its mechanical strength, rigidity and fatigue performance etc.
Referring to Fig. 2, general drive axle axle housing generally includes three parts: the Chinese lute shape housing 7 that swells in the middle of being positioned at and two central siphons 6 at two ends, 8 is set squares among the figure.The mode of production of present driving axle housing both domestic and external is divided into four kinds basically: cast type, towards the weldering formula, squeeze rise formula, cannula type.Doing one below respectively simply introduces:
(1) cast type axle housing: make the axle housing blank with casting method, carry out machining again and finish product.Chinese lute shape housing parts in the middle of this kind structure is positioned at spheroidal graphite cast-iron (an amount of nickel of adding in magnesium iron is also arranged) or cast steel material casting, after it is carried out machining, be pressed into long seamless steel pipe again at its two ends, fix as axle tube and with bolt or bearing pin, be press-fitted effect preferably to reach.
The characteristics of this process are: the 1) good rigidly of axle housing, but tough and strength character are poor, reach designing requirement to increase thickness of shell usually.The small lot batch manufacture investment is less, relatively is fit to domestic small lot batch manufacture.2) owing to foundry method features, when vehicle bridge wheelspan, steel leaf spring centre-to-centre spacing, the variation of hub bearing equidimension, axle housing all must redesign, so the product that this method is produced is retrofited difficult, also is not suitable for many variety production.3) because material and heat treatment are had higher requirements, it is higher to produce percent defective, makes the corresponding raising of production cost.4) high material consumption, profile is clumsy, weight is big.5) power consumption is big, and working condition is poor, and environmental pollution is serious.
(2) towards weldering formula axle housing: with mild steel steel plate (16Mn) is raw material, after striking out upper and lower two and half housings respectively, butt welding is connected to become middle casing again, after front side, rear side and the two ends of this middle casing are welded reinforcing ring, bonnet and two parts such as central siphon respectively, make then through machining.
The characteristics of this process are: 1) product remodeling is flexible, convenient.2) from heavy and light, compare with casting bridge shell, weight can reduce 10%--20%.3) percent defective is low, and the production efficiency height is fit to produce in enormous quantities, therefore by domestic Light-duty Vehicle and the generally employing of external most of vehicle institute.4) production equipment is many, mould is many, investment is big, and stock utilization is low, is not suitable for many variety production.5) welding deformation is serious, eliminate welding interior stress although adopt several different methods, but during in the automobile heavy duty or in rugged and rough travels down, the axle housing easy deformation, both influenced the transmission performance of vehicle bridge, may cause the damage of the parts such as semiaxis, gear of axle housing inside again, make that this axle housing functional reliability is poor, lost efficacy easily.6) in the heavy goods vehicles field, must adopt the drop stamping moulding, energy consumption is big, and equipment investment is big.
(3) steel pipe squeezes the banjo axle of the moulding of rising: adopt middle low carbon steel (as No. 35 steel or 16Mn) seamless steel pipe through repeatedly squeezing the machine-shaping of rising.This process is more advanced, but material is required very high, should the intensity height, good rigidly, well drawing property and impact flexibility are arranged again.
The characteristics of this process are: 1) because axle housing processing the is cold-extruded deformation process that rises, so the mechanical performance of the axle housing of this explained hereafter and good rigidity.2) with section bar processing, stock utilization is higher.3) reduced bonding area, the product sex change is little.4) need special-purpose former and forming technique, investment is big.5) integrated performance indexs such as the ductility of material, intensity are had higher requirements, increase the cost of raw material.6) production efficiency is low, and the percent defective height has improved manufacturing cost.
(4) cannula type axle housing (claiming unitized carrier-type axle housing or stent-type axle housing again): with bevel housing and middle part Chinese lute shape axle housing cast solid, two ends are pressed into seamless steel pipe, with bearing pin or bolt it are fixed with one again.
Though this axle housing weight is lighter, poor-and the rigidity of support of reduction gearing bearing block is good, and the casting processing technology is fairly simple, easy, and the rigidity of axle housing and bad mechanical strength only are applicable to light vehicle; Especially safeguard poor-during decelerator, must pull down whole drive axle, otherwise can't open and inspect poor-decelerator device.Therefore this technology is not suitable for a large amount of productions, and, seldom used this technology now.
Summary of the invention
In view of this, the roll type cold pressing processing method and the device that the purpose of this invention is to provide a kind of vehicle driving axle housing, the present invention is the characteristics of the various production technologies of comprehensive prior art, and at the problem that exists in the existing axle housing manufacturing, in conjunction with production practices for many years and experience, a kind of new technology and isolated plant thereof of producing the vehicle driving axle housing stage casing of developing.This rolls simple, the operation easily of type cold-stamped production craft step, and isolated plant and mould structure are simple, easy to manufacture, and cost is low, and production process is not polluted, product mechanical strength height, reliable operation.
In order to achieve the above object, the invention provides a kind of roll type cold pressing processing method of vehicle driving axle housing, it is characterized in that: adopt and roll the Chinese lute shape housing that swells in the middle of the type cold-extrusion technology manufacturing driving axle housing, just load axial compressive force at axle housing blank or axle housing semi-finished product two ends, in shaping mould, utilize the special-purpose roller wheel of rolling that this workpiece inwall is rolled and the type of the rolling cold extrusion operation of radial feed gradually repeatedly, work the work piece into needed axle housing shape.
The roll type cold pressing processing method of Chinese lute shape housing comprises following operation in the middle of the described manufacturing driving axle housing:
(1) preparation driving axle housing blank or axle housing semi-finished product;
(2) offer long narrow oblique crank Z to groove at axle housing blank or semi-finished product centre position;
(3) apply axial compressive force respectively at the workpiece two ends, utilize quadric chain that the long narrow oblique crank Z on the workpiece is carried out enlarging to groove;
(4) keep the axial compressive force at workpiece two ends, in middle axially extending bore, place and roll roller wheel, and make by this of drive unit driven rotary and roll roller wheel carries out radial feed, roll extrusion repeatedly gradually at the workpiece inwall according to setting speed cold extrusion operation;
(5) roll after roller wheel rotation sets the number of turns, make the workpiece inner and outer wall respectively according to the die cavity shape crimp gradually of the movement locus of rolling roller wheel and former and later two moulds;
(6) after promptly it reaches the drawing dimensional requirement in driving axle housing stage casing, finish this process operations by Workpiece shaping when the type cold-extrusion technology of rolling makes, change other operation over to workpiece is carried out following process.
In described operation (4) and (5), roll roller wheel carries out radial feed, roll extrusion repeatedly gradually to the workpiece inwall cold extrusion when operation, being equiped with a support roller respectively in the both sides of former and later two moulds is resisted against on the corresponding variable cross-section of the workpiece position, so that workpiece can change shape according to designing requirement.
In the described operation (4), roll the feeding gradually that roller wheel carries out the workpiece inwall, the cold extrusion operation of roll extrusion is repeatedly carried out according to the Archimedes spiral track, the technological parameter of this moment is: rotating speed: 5～100 rev/mins, feeding 2～10mm/ changes.
In order to achieve the above object, what the present invention also provided a kind of roll type cold pressing processing method that is used for vehicle driving axle housing rolls the roller wheel drive unit, it is characterized in that: described drive unit is to utilize the motor via reducer structure to drive the vertical major rotation, on this vertical major, the lower end is equipped with a pair of duplicate gear respectively, and by be positioned in this a pair of duplicate gear inboard on, following two gears mesh respectively to drive and are positioned on the workpiece, two disk gears of downside rotate synchronously, are divided into two groups of roller wheels of rolling that drive respectively separately and roll in the intermediate throughholes of static workpiece and roll pressure by being installed in four slide blocks on these two disk gears again; Upper and lower two differential gears that are positioned at the outside in the described a pair of duplicate gear pay drive upper and lower two double helix leading screws rotation by conical gear respectively, drive slide block respectively by these two double helix leading screws and on disk gear, move radially, make running roller realize radial feed.
Described drive unit also comprises: be arranged on former and later two moulds and the roller that is positioned at four auxiliary ejections of this mould left and right sides on the actionless workbench.
The described roller wheel of rolling is by the rolling wheel support that has square hole be positioned at roller this cantilever tip, that be free rotation state and formed.
The described roller wheel support of rolling is provided with a square opening, and this square opening is used for upper and lower chimeric connection of square toes of two slide block one ends driving with upper and lower disk gear.
The present invention is a kind of roll type cold pressing processing method that adopts integral drive axle housing blank or the middle Chinese lute shape of axle housing semi-finished product processing and manufacturing vehicle driving axle housing through hole, because this axle housing main body is a monolithic construction, the Chinese lute shape through-hole envelope that the centre swells adopts the reaming and the formula cold-extrusion technology machine-shaping of making dough, in forming process, adopt special use to roll roller wheel drive unit and mould, auxiliary wheel pushing tow again, making the half-finished metal material of axle housing blank or axle housing be carried out volume by multiple gradual radial feed ground shifts, and under the material thickness of crushed element remains unchanged situation substantially, circle is processed in the middle casing formula cold extrusion of making dough, and this axle housing main body is extended to two ends from the Qiao Bao top in the hollow variable cross-section mode of setting, to reach designing requirement.Because middle casing is by cold extrusion shaped to axle housing blank or the half-finished formula of making dough repeatedly of axle housing, this cold-extrusion technology makes that the metallographic structure of these zone steel is very fine and closely woven, and obtain surperficial cure process, thereby strengthened every mechanical performance of axle housing main body corresponding site greatly, the overall mechanical strength and the rigidity of driving axle housing have been improved, reliable operation.Moreover, isolated plant and mould simple in structure, easy to manufacture, cost is low, and production process is not polluted.
In a word, the present invention has following advantage: (1) processing step is simple, easy to operate, and special equipment and mould is simple in structure, reliable operation, realizes that easily small investment is fit to the flowing water production in enormous quantities of many kinds.(2) reduce the welding job amount, the also corresponding distortion that reduces axle housing can improve the stability of automobilism.(3) production precision height, axle housing good rigidly, the service life of having improved driving axle housing.(4) this explained hereafter environment compliance with environmental protection requirements is not polluted; Labor intensity of operating personnel is low.Therefore, the present invention has good popularization and application prospect.
Description of drawings
Fig. 1 is that the structure of automobile drive axle is formed schematic diagram.
Fig. 2 is that the structure of vehicle driving axle housing is formed schematic diagram.
Fig. 3 (A), (B), (C) are respectively the driving axle housing blank of step in the processing method of the present invention (1) preparation or axle housing semi-finished product structural representation, its A-A cross-sectional view and (A) right view of figure.
Fig. 4 is the operation of step in the processing method of the present invention (2): at axle housing blank or semi-finished product setting-out scarfing schematic diagram.
Fig. 5 (A), (B) are respectively the operations of step in the processing method of the present invention (3): the operation chart of axially extending bore or groove being carried out the quadric chain that adopted in the schematic diagram of enlarging and this step.
Fig. 6 is the operation of step in the processing method of the present invention (4): the roll type cold pressing processing method schematic diagram.
Fig. 7 (A), (B), (C) are respectively that the driving axle housing structure after each operation is finished in the processing method of the present invention is formed schematic diagram, its interstitial hole C-C cross-sectional view and both sides variable cross-section district D-D cross-sectional view.
Fig. 8 (A), (B) be respectively the structure of special equipment of the present invention-roll roller wheel drive unit form and the transmission principle schematic diagram and wherein roll roller wheel structure composition schematic diagram.
Fig. 9 is the subsequent handling of the inventive method of introducing of embodiment: weld axial melting welding band schematic diagram.
Figure 10 is the subsequent handling of the inventive method of introducing of embodiment: welding reinforcing ring schematic diagram also has respectively the operation of Chinese lute hole end surface and reinforcing ring end face being carried out machining before this operation.
Figure 11 is the subsequent handling of the inventive method of introducing of embodiment: postwelding lid schematic diagram.
Figure 12 is the subsequent handling of the inventive method of introducing of embodiment: weldering ring flange schematic diagram.
Figure 13 is the subsequent handling of the inventive method of introducing of embodiment: welding steel plate holder schematic diagram.
Figure 14 is the subsequent handling of the inventive method of introducing of embodiment: weldering support schematic diagram.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing
Referring to Fig. 3～Fig. 7, introduce the roll type cold pressing processing method of vehicle driving axle housing of the present invention: promptly adopt and roll the Chinese lute shape housing that swells in the middle of the type cold-extrusion technology manufacturing driving axle housing, just load axial compressive force at axle housing blank or axle housing semi-finished product two ends, in shaping mould, utilize the special-purpose roller wheel of rolling in the roller wheel drive unit of rolling that this workpiece inwall is rolled and the type of the rolling cold extrusion operation of radial feed gradually repeatedly, work the work piece into needed axle housing shape.Briefly explain following each operation of this method below:
(1) preparation driving axle housing blank or axle housing semi-finished product, this driving axle housing blank or axle housing semi-finished product are that quadrangle steel pipe, two ends are the integrated support structure (as shown in Figure 3) of segmentation convergent calibre-changeable seamless steel pipe in the middle of being, material is medium carbon alloy steel or low-carbon alloy steel.
(2) offer long narrow oblique crank Z to groove (as shown in Figure 4) at axle housing blank or semi-finished product centre position;
(3) apply axial compressive force F respectively at the workpiece two ends, utilize quadric chain (shown in Fig. 5 (B)) that the long narrow oblique crank Z on the workpiece is carried out enlarging to groove and be machined to shape shown in Fig. 5 (A);
(4) the axial compressive force F at maintenance workpiece two ends, in middle axially extending bore, place and roll roller wheel 9, and make by this of drive unit (referring to Fig. 8) driven rotary and roll roller wheel 9 carries out radial feed, roll extrusion repeatedly gradually at the section bar inwall according to setting speed cold extrusion operation (as shown in Figure 6).According to unlike material and different processing dimensions, the technological parameter of this cold extrusion operation is: rotating speed: 5～100 rev/mins, feeding 2～10mm/ changes.When the cold extrusion in this operation and subsequent handling (5) is operated, be respectively equipped with a roller in the both sides of former and later two moulds 10 that are positioned at the workpiece outside and be resisted against on the corresponding variable cross-section of the workpiece position, so that workpiece can be out of shape according to designing requirement.Wherein, also fairly simple as the special equipment structure of critical process of the present invention, fund input is less, and technology realizes easily.
(5) roll roller wheel and rotate some circles after, make axle housing workpiece inner and outer wall respectively according to the die cavity shape crimp gradually of the movement locus of rolling roller wheel and former and later two moulds 10;
(6) after promptly it reaches the drawing dimensional requirement in driving axle housing stage casing, finish this process operations by axle housing Workpiece shaping (as shown in Figure 7) when the type cold-extrusion technology of rolling makes, change other operation over to the axle housing workpiece is carried out following process.
Referring to Fig. 8, the structure composition and the transmission principle of roller wheel drive unit rolled in the special use of introducing the roll type cold pressing processing method of vehicle driving axle housing of the present invention, this drive unit is to utilize motor 21 to drive vertical major 23 rotations by reducing gear 22, on this vertical major 23, the lower end is equipped with a pair of duplicate gear 24 respectively, and by be positioned in this a pair of duplicate gear 24 inboard on, following two gears mesh respectively to drive and are positioned on the workpiece, two disk gears 28 of downside rotate synchronously, are divided into two groups of roller wheels 9 of rolling that drive respectively separately and roll in static workpiece 7 intermediate throughholes and roll pressure by being installed in four slide blocks 29 on these two disk gears 28 again.26 of upper and lower two differential gears that are positioned at the outside in this a pair of duplicate gear 24 pay 25 drives upper and lower two double helix leading screws, 27 rotations by conical gear separately respectively, drive slide block 29 respectively by these two double helix leading screws 27 and on disk gear 28, move radially, make running roller realize radial feed.Wherein rolling roller wheel 9 has two, and each is rolled roller wheel 9 and is installed in respectively by on the rolling wheel support 30 that has square hole 31.This drive unit also includes: be arranged on former and later two moulds 10 and the roller (referring to Fig. 6) that is positioned at four auxiliary ejections of this mould left and right sides on the actionless workbench.Wherein roll roller wheel support 30 and be provided with a square through hole 31, this square hole 31 is the upper and lower chimeric connecting through holes of square toes that are used for two slide block 29 other ends driving with upper and lower disk gear 28.
Below take the driving axle housing of heavy-duty car as example; ( 16mm,：Ф530mm ) ： ( 3 ) → ( 4 ) → ( 5 ) →、 ( 6 ) → ( 7 ) →8 ( 2 ) 12 ( 9 ) →→→→13 ( 10 ) →14 ( 11 ) →→→15 ( 12 ) →→→16 ( 13 ) →17 ( 14 ) →→→→→。
Claims (8)
1. the roll type cold pressing processing method of a vehicle driving axle housing, it is characterized in that: adopt and roll the Chinese lute shape housing that swells in the middle of the type cold-extrusion technology manufacturing driving axle housing, just load axial compressive force at axle housing blank or axle housing semi-finished product two ends, in shaping mould, utilize the special-purpose roller wheel of rolling that this workpiece inwall is rolled and the type of the rolling cold extrusion operation of radial feed gradually repeatedly, work the work piece into needed axle housing shape.
2. the roll type cold pressing processing method of vehicle driving axle housing according to claim 1 is characterized in that: the roll type cold pressing processing method of Chinese lute shape housing comprises following operation in the middle of the described manufacturing driving axle housing:
(1) preparation driving axle housing blank or axle housing semi-finished product;
(2) offer long narrow oblique crank Z to groove at axle housing blank or semi-finished product centre position;
(3) apply axial compressive force respectively at the workpiece two ends, utilize quadric chain that the long narrow oblique crank Z on the workpiece is carried out enlarging to groove;
(4) keep the axial compressive force at workpiece two ends, in middle axially extending bore, place and roll roller wheel, and make by this of drive unit driven rotary and roll roller wheel carries out radial feed, roll extrusion repeatedly gradually at the workpiece inwall according to setting speed cold extrusion operation;
(5) roll after roller wheel rotation sets the number of turns, make the workpiece inner and outer wall respectively according to the die cavity shape crimp gradually of the movement locus of rolling roller wheel and former and later two moulds;
(6) after promptly it reaches the drawing dimensional requirement in driving axle housing stage casing, finish this process operations by Workpiece shaping when the type cold-extrusion technology of rolling makes, change other operation over to workpiece is carried out following process.
3. the roll type cold pressing processing method of vehicle driving axle housing according to claim 2, it is characterized in that: in described operation (4) and (5), roll roller wheel carries out radial feed, roll extrusion repeatedly gradually to the workpiece inwall cold extrusion when operation, being equiped with a support roller respectively in the both sides of former and later two moulds is resisted against on the corresponding variable cross-section of the workpiece position, so that workpiece can change shape according to designing requirement.
4. the roll type cold pressing processing method of vehicle driving axle housing according to claim 2, it is characterized in that: in the described operation (4), roll the radial feed gradually that roller wheel carries out the workpiece inwall, the cold extrusion operation of roll extrusion is repeatedly carried out according to the Archimedes spiral track, the technological parameter of this moment is: rotating speed: 5～100 rev/mins, feeding 2～10mm/ changes.
5. a roll type cold pressing processing method that is used for the described vehicle driving axle housing of claim 1 rolls the roller wheel drive unit, it is characterized in that: described drive unit is to utilize the motor via reducer structure to drive the vertical major rotation, on this vertical major, the lower end is equipped with a pair of duplicate gear respectively, and by be positioned in this a pair of duplicate gear inboard on, following two gears mesh respectively to drive and are positioned on the workpiece, two disk gears of downside rotate synchronously, are divided into two groups of roller wheels of rolling that drive respectively separately and roll in the intermediate throughholes of static workpiece and roll pressure by being installed in four slide blocks on these two disk gears again; Upper and lower two differential gears that are positioned at the outside in the described a pair of duplicate gear pay drive upper and lower two double helix leading screws rotation by conical gear respectively, drive slide block respectively by these two double helix leading screws and on disk gear, move radially, drive running roller and realize radial feed.
The roll type cold pressing processing method of vehicle driving axle housing according to claim 5 roll the roller wheel drive unit, it is characterized in that: described drive unit also comprises: be arranged on former and later two moulds on the actionless workbench and be positioned at the roller of four auxiliary ejections of this mould left and right sides.
The roll type cold pressing processing method of vehicle driving axle housing according to claim 5 roll the roller wheel drive unit, it is characterized in that: the described roller wheel of rolling is by the rolling wheel support that has square hole be positioned at roller this cantilever tip, that be free rotation state and formed.
8. roll the roller wheel drive unit according to the roll type cold pressing processing method of claim 5 or 7 described vehicle driving axle housings, it is characterized in that: the described roller wheel support of rolling is provided with a square opening, and this square opening is used for upper and lower chimeric connection of square toes of two slide block one ends driving with upper and lower disk gear.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101384790A CN100457308C (en) | 2006-11-16 | 2006-11-16 | Roll type cold pressing processing method and device for vehicle driving axle housing |
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| CNB2006101384790A CN100457308C (en) | 2006-11-16 | 2006-11-16 | Roll type cold pressing processing method and device for vehicle driving axle housing |
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| CN101185946A true CN101185946A (en) | 2008-05-28 |
| CN100457308C CN100457308C (en) | 2009-02-04 |
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| CNB2006101384790A Expired - Fee Related CN100457308C (en) | 2006-11-16 | 2006-11-16 | Roll type cold pressing processing method and device for vehicle driving axle housing |
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| 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 |
| CN102886466A (en) * | 2012-09-24 | 2013-01-23 | 重庆科技学院 | Overall composite inner high-pressure flow type bulging device for car drive axle |
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| CN103567318A (en) * | 2012-08-10 | 2014-02-12 | 湖北奥德车桥有限公司 | Drive axle housing lute-hole molding device |
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| DD155689A3 (en) * | 1979-06-27 | 1982-06-30 | Bertram Neumann | DEVICE FOR MANUFACTURING MOTOR VEHICLE AXES |
| CN2810797Y (en) * | 2005-08-01 | 2006-08-30 | 印辉 | Device for processing axle housing |
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| CN102581051B (en) * | 2011-11-16 | 2014-09-03 | 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 |
| CN103567318A (en) * | 2012-08-10 | 2014-02-12 | 湖北奥德车桥有限公司 | Drive axle housing lute-hole molding device |
| CN102886463B (en) * | 2012-09-24 | 2014-11-05 | 重庆科技学院 | Hydraulic press special for integral compound bulging of automatic driving axle |
| CN102886460B (en) * | 2012-09-24 | 2014-11-05 | 重庆科技学院 | Overall composite mechanical push rod type bulging process for car drive axle |
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