CN101722225A - Novel hydraulic bulging process for tubular parts - Google Patents

Novel hydraulic bulging process for tubular parts Download PDF

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Publication number
CN101722225A
CN101722225A CN200910227958A CN200910227958A CN101722225A CN 101722225 A CN101722225 A CN 101722225A CN 200910227958 A CN200910227958 A CN 200910227958A CN 200910227958 A CN200910227958 A CN 200910227958A CN 101722225 A CN101722225 A CN 101722225A
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fuse
metal
bulging
hydraulic
metal tube
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CN200910227958A
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Chinese (zh)
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王海龙
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王秀丽
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Priority to CN200910227958A priority Critical patent/CN101722225A/en
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Abstract

The invention relates to a novel hydraulic bulging process for metal tubular parts. Rubber or a polyurethane core is used to realize the hydraulic bulging of the tubular parts. The hollow core is in a hollow baggy shape; a metal rod for supporting the core is arranged in the core; the metal rod plays a role in enabling the core to insert into and draw out of a metal tube freely; according to different bulging parts, the metal rod is manufactured to be elastic or rigid; the shape and length of the elastic metal rod can be changed with the deformation of the metal tube; one end of the core is connected with a hydraulic supercharger, and bulging liquid is injected into the core by the supercharger, so that the metal tube is formed; both ends of the metal tube are provided with oil cylinders for pushing the metal tube and the core, and both ends of the core are stressed by the oil cylinders to ensure that both ends of the core are not broken; and the oil cylinders have the other function of pushing the metal tube to replenish metal required by deformation. The novel hydraulic bulging process can be used for hydraulic bulging of automobile axle housings and spiral corrugated tubes.

Description

A kind of hydraulic bulging process of new tubular member
Affiliated technical field
The present invention relates to a kind of hydraulic expanding-forming new technology of tubular metal part.The present invention uses rubber or polyurethane fuse to realize the hydraulic expanding-forming of tubular member.Fuse is hollow bag shape.The fuse the inside has a metal bar to be used for supporting fuse, and the effect of metal bar is to make fuse freely insert and to extract out in metal tube.According to different bulging parts, metal bar is manufactured into flexible or rigidity, and the elastic metallic rod can change shape and length along with the distortion of metal tube.One end of fuse links to each other with the hydraulic booster machine, and supercharger injects bulging liquid fuse and makes the metal tube moulding.The two ends of metal tube have two oil cylinders to promote metal tube and fuse, and oil cylinder makes fuse two ends pressurized, guarantees that it does not break; Another function of oil cylinder is to promote metal tube to replenish the needed metal of distortion.The mold clamping force of bulging utilizes existing general hydraulic press to finish.
Background technology
At present, the hydraulic expanding-forming of tubular metal part is to use dedicated hydraulic bulging machine to finish.The price of dedicated hydraulic bulging machine is very high, and the price of the hydraulic expanding-forming machine that a Daepori is logical is several ten million yuans, has therefore limited it and has been extensive use of.Bulging liquid is open, and very big environmental pollution and energy waste are arranged, and has also limited its place to use.In addition,, on the metal tube embryo, can not open the fabrication hole postforming in advance, otherwise bulging liquid can leak at this fabrication hole for the bigger part of local deformation amount.
Summary of the invention
For the high price that overcomes existing dedicated hydraulic bulging machine and open topping up mode, the present invention uses the storage container of the hollow bag shape fuse of polyurethane or rubber elastomeric material as bulging liquid.Because bag shape fuse is to be made by elastomeric material, when high pressure bulging liquid injected fuse, bag shape fuse can be close to the inwall of metal tube and produce powerful internal force and make the metal tube distortion, and the shape after the metal tube moulding will be determined by mold shape.When bulging liquid in the fuse after the sucking-off, a bag shape fuse can be close on the metal bar in the fuse, fuse can be easy to extract out the part after moulding.Bulging liquid is squeezed into and sucking-off by the low-pressure hydraulic supercharger, is to circulate in the environment of sealing, and is therefore free from environmental pollution; And because bulging liquid internal circulating load is very little, so the motor that needs, pump, valve, oil cylinder and supercharger are also very little, so the cost of machine is very low, and the energy that consumes during work is very little.For the bigger part of local deformation amount, can on the pipe embryo, open fabrication hole or process technical face and carry out hydraulic expanding-forming again.This is that existing dedicated hydraulic bulging machine can not be accomplished.
The technical solution adopted for the present invention to solve the technical problems is: use rubber or polyurethane fuse to insert in the metal tube, fuse is hollow bag shape.The fuse the inside has a metal bar to be used for supporting and sealing bag shape fuse, and the effect of metal bar is to make fuse freely insert and to extract out in metal tube.According to different bulging parts, metal bar is manufactured into flexible or rigidity, and the elastic metallic rod can change shape and length along with the distortion of metal tube.One end of elastic metallic rod links to each other with bolt by flange with the openend of fuse, forms the hollow bag shape fuse of sealing.For straight tube and after moulding curved part of bending, the elastic metallic rod is made up of mandrel and spring and sleeve at one section of the fuse the inside.For the part of bending at the moulding palintrope, the elastic metallic rod is made up of mandrel and special spring a section of fuse the inside, and it can change shape and length along with the deformed shape of metal tube.Flange one end of fuse links to each other with hydraulic booster machine system, and hydraulic booster machine system is made up of low-pressure charging machine and high pressure supercharger.The low-pressure charging machine injects fuse with bulging liquid and fuse is close on the drift of axial promotion oil cylinder of the other end of the inwall of metal tube and pipe.The high pressure supercharger injects fuse with high pressure bulging liquid, and bag shape fuse can be close to the inwall of metal tube and produce powerful internal force and make the metal tube distortion, and the shape after the metal tube moulding will be determined by mold shape.There are two axial oil cylinders at the two ends of metal tube, and oil cylinder axially promotes metal tube and fuse, and oil cylinder makes fuse two ends pressurized, guarantee that it does not break; Another function of oil cylinder is to promote metal tube to replenish the needed metal of distortion.The mold clamping force of bulging utilizes existing general hydraulic press to finish.After shaping is finished, the release of hydraulic booster machine, the axial promotion oil cylinder of an end resets, and the slide block of hydraulic press lifts patrix, and in the fuse after the sucking-off, a bag shape fuse can be close on the elastic metallic rod low-pressure charging machine with bulging liquid.Flange one end at fuse is connected with a material loading and following material oil cylinder, and part and fuse after this oil cylinder will be shaped carry away from counterdie.After part after workman or robot will be shaped unloads, load onto the production that new metal tube just can carry out next circulation.Do not bend the part of bending for straight tube and after moulding, if do not need axial oil cylinder axially to promote metal tube and fuse simultaneously, mandrel is then made by the rigid metal rod, and the two ends of metal bar link to each other with bolt by flange with the two ends of fuse, forms the hollow bag shape fuse of sealing.
The invention has the beneficial effects as follows that bulging liquid is directly squeezed into bag shape fuse by the hydraulic booster machine and directly from the sucking-off of bag shape fuse, is to circulate, and is therefore free from environmental pollution in the environment of sealing; And because bulging liquid internal circulating load is very little, so the motor that needs, pump, valve, oil cylinder and supercharger are also very little, so the cost of machine is very low, and the energy that consumes during work is very little.For the bigger part of local deformation amount, can on the pipe embryo, open fabrication hole or process technical face and carry out hydraulic expanding-forming again.This is that existing dedicated hydraulic bulging machine can not be accomplished.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a mechanical schematic diagram of the present invention.
Fig. 2 is the fuse schematic diagram.
Fig. 3 is bulging liquid schematic diagram during sucking-off in fuse.
Fig. 4 is a hydraulic schematic diagram of the present invention.
Fig. 5 is an automobile axle housing hydraulic expanding-forming process chart
Fig. 6 is an automobile axle housing bulging process profile
Fig. 7 is a helicon pipe joint bulging mechanical schematic diagram
Fig. 8 is a helicon pipe joint schematic diagram
Fig. 9 is a bellows tube bulging fuse profile
Among the figure: 1. patrix, 2. counterdie, 3. metal tube embryo, 4. the drift of an axial oil cylinder, 5. an axial oil cylinder, 6. No. two axial oil cylinders, 7. fuse slide block hoistway, 8. fuse slide block, 9. fuse, 10. fuse bolt, 11. fuse drift, 12. the fuse flange, 13. springs, the hollow bag shape fuse of 14. elastomeric materials, 15. elastic metallic rod mandrel, 16. elastic metallic rod sleeve, 17. bulging liquid inlets, 18. bulging liquid are the bag shape fuse after the sucking-off in the fuse, 19. hydraulic control one-way valve, 20. the low-pressure hydraulic supercharger, 21. three-position four-way valves, 22. overflow valves, 23. low pressure gear pump and motor, 24. fuel tank, 25. bulging liquid prefill valve and Pressure gauges, 26. high-pressure and hydraulic superchargers, 27. three-position four-way valve, 28. Pressure gauge, 29. high-pressure pumps and motor, 30. automobile axle housing pipe embryos, 31. automobile axle housing bulging operation one, 32. automobile axle housing bulging operation two, 33. automobile axle housing bulging operations three, 34. helicon pipe joint bulging patrixes, 35. helicon pipe joint bulging counterdie, 36. helicon pipe joint bulging fuse, 37. helicon pipe joints, the rigid metal rod mandrel of 38. helicon pipe joint fuses, 39. the hollow bag shape fuse of helicon pipe joint, 40. the bulging liquid inlet of helicon pipe joint, 41. high-pressure oil pipes, 42. sealing gaskets, 43. stop nut, 44. nut, 45. flanges, one, 46. helicon pipe joint mandrel bulging liquid inlet, 47. flange two, 48. nut, 49. stop nuts, 50. spigot nuts.
The specific embodiment
In the forming process of Fig. 1: after workman or robot insert fuse (9) with metal tube embryo (3), fuse slide block (8) drives fuse (9) and metal tube embryo (3) enters counterdie (2), patrix (1) is driven by hydraulic press and moves downward matched moulds, an axial oil cylinder (5) travels forward, the drift of an axial oil cylinder (4) compresses metal tube embryo (3), low-pressure hydraulic supercharger (20) bulging liquid is injected fuse (9) and make it to be close to the inwall of metal tube (3) and the drift (4) of an axial oil cylinder on, after the bulging hydraulic coupling reaches 10 crust (bar), high-pressure and hydraulic supercharger (26) beginning is injected high pressure bulging liquid to fuse makes metal tube embryo (3) bulging, in high-pressure and hydraulic supercharger (26) supercharging, an axial oil cylinder (5) and No. two axial oil cylinders (6) axially promote metal tube (3) and fuse (9) replenishing the needed metal of distortion, the pressurize of high-pressure and hydraulic supercharger after several seconds metal tube embryo (3) can be adjacent to counterdie (2) and patrix (1) and be deformed into fabricated part.Discharge process; High-pressure and hydraulic supercharger (26) release resets, low-pressure hydraulic supercharger (20) resets and bulging liquid is sucked back low-pressure hydraulic supercharger (20) from fuse (9) lining, an axial oil cylinder (5) resets, patrix (1) is driven to move upward by hydraulic press and resets, fuse slide block (8) drive fuse (9) and fabricated part move upward and reset, workman or robot unload fabricated part, load onto the production that next circulation just can be carried out in new metal tube embryo (3) back.
In the hydraulic expanding-forming process of the automobile axle housing of Fig. 5: divide three process to carry out the hydraulic expanding-forming of automobile axle housing, operation one is that straight tube (30) is become spheroid (31) at the mid portion bulging, and the diameter maximum of spheroid can reach two times of straight tube diameter; Operation two is that the material thickness with the peak place of the one side corresponding with the automobile axle housing opening part of spheroid cuts away half (32), make its preferential distortion and be place, angle, automobile axle housing flange garden supplementary material in the postorder bulging, operation three is the semi-finished product bulging finished products (33) with operation two.
At Fig. 7, Fig. 8, in the hydraulic expanding-forming process of the helicon pipe joint of Fig. 9, the mandrel of fuse (38) is the rigid metal rod, hollow bag shape polyurethane rubber fuse (39) is inserted in mandrel (38) afterwards, and tighten with nut and stop nut (43) (44) (49) (50) at two ends, forms the bag shape fuse of sealing, accompany two flange gaskets (45) (47) between fuse (39) and the nut (44) (49), the head of fuse is that a taper spigot nut (50) penetrates fuse to make things convenient for pipe.The afterbody of fuse links to each other with hydraulic booster machine system.In order to increase productivity ratio, can once process two or more bellows tubes (37) simultaneously, the mold clamping force of patrix (34) and counterdie (35) utilizes existing general hydraulic press to finish.

Claims (5)

1. the hydraulic expanding-forming new technology of a tubular metal part is characterized in that: use the rubber of hollow bag shape or the hydraulic expanding-forming that the polyurethane fuse is realized tubular member.The fuse the inside has a metal bar to be used for supporting fuse, and the effect of metal bar is to make fuse freely insert and to extract out in metal tube.According to different bulging parts, metal bar is manufactured into flexible or rigidity, and the elastic metallic rod can change shape and length along with the distortion of metal tube.One end of fuse links to each other with the hydraulic booster machine, and supercharger directly injects bulging liquid in fuse and makes the metal tube moulding.The two ends of metal tube have two oil cylinders to promote metal tubes and fuse, and oil cylinder makes fuse two ends pressurized, guarantee that it does not break and promotes metal tube to be out of shape needed metal to replenish.For the bigger part of local deformation amount, can on the pipe embryo, open fabrication hole or process technical face and carry out hydraulic expanding-forming again.This is that existing dedicated hydraulic bulging machine can not be accomplished.
2. hydraulic expanding-forming new technology according to claim 1 is characterized in that: use the rubber of hollow bag shape or the hydraulic expanding-forming that the polyurethane fuse is realized tubular member.The fuse the inside has a metal bar to be used for supporting fuse, and the effect of metal bar is to make fuse freely insert and to extract out in metal tube.According to different bulging parts, metal bar is manufactured into flexible or rigidity, and an end of elastic metallic rod links to each other with bolt by flange with the openend of fuse, forms the hollow bag shape fuse of sealing.For straight tube and after moulding curved part of bending, the elastic metallic rod is made up of mandrel and spring and sleeve at one section of the fuse the inside.For the part of bending at the moulding palintrope, the elastic metallic rod is made up of mandrel and special spring a section of fuse the inside, and it can change shape and length along with the deformed shape of metal tube.Do not bend the small deformation part of bending for straight tube and after moulding, if do not need axial oil cylinder axially to promote metal tube and fuse simultaneously, mandrel is then made by the rigid metal rod, and the two ends of metal bar link to each other with bolt by flange with the two ends of fuse, forms the hollow bag shape fuse of sealing.
3. hydraulic expanding-forming new technology according to claim 1 is characterized in that: an end of bulging fuse links to each other with high pressure supercharger system with the low-pressure charging machine.The low-pressure charging machine directly injects fuse or directly sucking-off in the fuse with bulging liquid.The two ends of metal tube have two oil cylinders to promote metal tubes and fuse, and oil cylinder makes fuse two ends pressurized, guarantee that it does not break and promotes metal tube to be out of shape needed metal to replenish.When bulging liquid in the fuse after the sucking-off, a bag shape fuse can be close on the metal bar in the fuse, fuse can be easy to extract out the part after moulding.
4. hydraulic expanding-forming new technology according to claim 1 is characterized in that: this hydraulic expanding-forming new technology is used for the hydraulic expanding-forming of automobile axle housing, can produces whole automobile axle housing.The hydraulic expanding-forming of automobile axle housing divides three process to carry out, and operation one is that straight tube is become spheroid at the mid portion bulging, and the diameter maximum of spheroid can reach two times of straight tube diameter; In order to increase the hydraulic expanding-forming deformation rate and to reduce bulging power, operation two is that the material thickness with the peak place of the one side corresponding with the automobile axle housing opening part of spheroid cuts away half and carries out next step hydraulic expanding-forming again, makes its preferential distortion and be place, angle, automobile axle housing flange garden supplementary material in the bulging of operation three.
5. hydraulic expanding-forming new technology according to claim 1 is characterized in that: the hydraulic expanding-forming process that this hydraulic expanding-forming new technology is used for the helicon pipe joint.The mandrel of the fuse that the hydraulic expanding-forming of helicon pipe joint is used is the rigid metal rod.Hollow bag shape polyurethane rubber fuse is inserted in after the mandrel, tighten with nut and stop nut at two ends, form the bag shape fuse of sealing, accompany two flange gaskets between fuse and the nut, the head of fuse is that a taper spigot nut penetrates fuse to make things convenient for pipe.The afterbody of fuse links to each other with hydraulic booster machine system.In order to increase productivity ratio, can once process two or more helicon pipe joints simultaneously, the mold clamping force of counterdie and patrix utilizes existing general hydraulic press to finish.
CN200910227958A 2009-12-08 2009-12-08 Novel hydraulic bulging process for tubular parts Pending CN101722225A (en)

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Application Number Priority Date Filing Date Title
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CN200910227958A CN101722225A (en) 2009-12-08 2009-12-08 Novel hydraulic bulging process for tubular parts

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101947603A (en) * 2010-09-27 2011-01-19 浙江金洲管道科技股份有限公司 Elastic internal expansion tube expander
CN102259128A (en) * 2011-06-28 2011-11-30 肇庆市骏驰科技有限公司 Forming device for shaped corrugation compensating pipe
CN102699167A (en) * 2012-05-18 2012-10-03 张家港化工机械股份有限公司 Tool for machining expansion joint on pipe fitting
CN103567272A (en) * 2013-10-17 2014-02-12 江苏宁屹汽配科技有限公司 Method for driving axle housing tubular product to be wholly hydraulically bugled by pickup truck
CN105903793A (en) * 2016-05-12 2016-08-31 浙江宝森波纹管有限公司 Double-station corrugated pipe hydraulic forming machine and realizing method thereof
CN106903197A (en) * 2017-02-27 2017-06-30 哈尔滨工业大学 A kind of preparation method and application of high pressure resistant outer expanding helical bellows enhanced heat transfer component
CN107186037A (en) * 2017-06-12 2017-09-22 南通世发船舶机械有限公司 A kind of thermo shaping method of titanium alloy corrugated pipe
CN107999621A (en) * 2017-11-29 2018-05-08 闫永东 One kind is suitable for the molding shaping mould of automobile axle housing
CN109821956A (en) * 2018-08-30 2019-05-31 浙江志伯电器科技有限公司 A kind of manufacturing method of shaver shell
CN113245430A (en) * 2021-06-11 2021-08-13 威海赛威智能科技有限公司 Port sealing device for air pressure bulging of hollow metal component and use method thereof
CN115041573A (en) * 2022-06-22 2022-09-13 广州美亚股份有限公司 High-pressure expansion device for rubber tube water-resisting composite molding metal corrugated pipe
CN116140451A (en) * 2022-07-22 2023-05-23 广东思豪流体技术有限公司 Preparation method of special-shaped thin-wall small-caliber copper pipe

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101947603A (en) * 2010-09-27 2011-01-19 浙江金洲管道科技股份有限公司 Elastic internal expansion tube expander
CN102259128A (en) * 2011-06-28 2011-11-30 肇庆市骏驰科技有限公司 Forming device for shaped corrugation compensating pipe
CN102699167A (en) * 2012-05-18 2012-10-03 张家港化工机械股份有限公司 Tool for machining expansion joint on pipe fitting
CN103567272A (en) * 2013-10-17 2014-02-12 江苏宁屹汽配科技有限公司 Method for driving axle housing tubular product to be wholly hydraulically bugled by pickup truck
CN105903793B (en) * 2016-05-12 2018-04-13 浙江宝森波纹管有限公司 A kind of double-station bellows hydraulic forming machine and its implementation
CN105903793A (en) * 2016-05-12 2016-08-31 浙江宝森波纹管有限公司 Double-station corrugated pipe hydraulic forming machine and realizing method thereof
CN106903197A (en) * 2017-02-27 2017-06-30 哈尔滨工业大学 A kind of preparation method and application of high pressure resistant outer expanding helical bellows enhanced heat transfer component
CN107186037A (en) * 2017-06-12 2017-09-22 南通世发船舶机械有限公司 A kind of thermo shaping method of titanium alloy corrugated pipe
CN107999621A (en) * 2017-11-29 2018-05-08 闫永东 One kind is suitable for the molding shaping mould of automobile axle housing
CN107999621B (en) * 2017-11-29 2023-09-12 闫永东 Shaping die suitable for automobile axle housing molding
CN109821956A (en) * 2018-08-30 2019-05-31 浙江志伯电器科技有限公司 A kind of manufacturing method of shaver shell
CN113245430A (en) * 2021-06-11 2021-08-13 威海赛威智能科技有限公司 Port sealing device for air pressure bulging of hollow metal component and use method thereof
CN115041573A (en) * 2022-06-22 2022-09-13 广州美亚股份有限公司 High-pressure expansion device for rubber tube water-resisting composite molding metal corrugated pipe
CN116140451A (en) * 2022-07-22 2023-05-23 广东思豪流体技术有限公司 Preparation method of special-shaped thin-wall small-caliber copper pipe
CN116140451B (en) * 2022-07-22 2023-12-12 广东思豪流体技术有限公司 Preparation method of special-shaped thin-wall small-caliber copper pipe

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Open date: 20100609