CN201201008Y - Internal fluid infusion pressure boost type hydraulic expanding device for pipe material - Google Patents

Internal fluid infusion pressure boost type hydraulic expanding device for pipe material Download PDF

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Publication number
CN201201008Y
CN201201008Y CNU2008201042961U CN200820104296U CN201201008Y CN 201201008 Y CN201201008 Y CN 201201008Y CN U2008201042961 U CNU2008201042961 U CN U2008201042961U CN 200820104296 U CN200820104296 U CN 200820104296U CN 201201008 Y CN201201008 Y CN 201201008Y
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CN
China
Prior art keywords
pressure
platen
base
forming
pressure head
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2008201042961U
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Chinese (zh)
Inventor
杨连发
吴丛强
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Guilin University of Electronic Technology
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Guilin University of Electronic Technology
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Priority to CNU2008201042961U priority Critical patent/CN201201008Y/en
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Publication of CN201201008Y publication Critical patent/CN201201008Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a hydraulic tube bulging device with an internal pressure source, which consists of a pressure-charged piston, a pressure-charged cylinder body, an obturating ring, a bolt, an upper platen, a lower platen, a spacing ring and a base. The device is characterized in that a hydraulic pressure needed by tube forming is provided by extruding liquid in the pressure-charged cylinder body through the pressure-charged piston without an external hydraulic liquid feeding system, and axial force is provided for a formed tube by pushing a hollow stepped shaft type pressure head arranged in a through hole at the lower end of the pressure-charged cylinder body through the pressure-charged piston simultaneously; an O-shaped sealing ring is firmly pressed in corresponding grooves of the pressure-charged cylinder body and the base through the upper platen and the lower platen to realize the high pressure sealing to both ends of the formed tube; the length of a bulging area is controlled through the spacing ring which is sleeved between the upper platen and the lower platen; and the forming pressure of the tube material is controlled through an overflow valve and a pressure gauge component which are arranged at a horizontal through hole communicated with a counter bore of the base. The device has the advantages of simple and novel structure, low requirement on use environment, broad application prospect and so on.

Description

Fluid infusion booster-type tubing hydraulic expanding-forming device in a kind of
Technical field
The utility model relates to the test of forming tubular product performance, the experimental study of hydraulic expanding-forming load path and the shaping of various odd-shaped cross section hollow, the test, the experiment new equipment that belong to the forming high pressure in pipe technology, particularly a kind of interior fluid infusion booster-type tubing hydraulic expanding-forming device.
Background technology
Tubing hydraulic expanding-forming technology is that the thin-wall metal pipe of certain-length is put into mould, under internal liquid (water, oil) pressure effect, makes pipe radially expand outwardly, produce the forming technique of plastic deformation, also claims the internal high pressure forming technology.Its integrated application bending, partial plastic forming, squeeze technology such as the combined shaping that expands tubing carried out Plastic Forming processing, thereby obtain complicated hollow unit.Compare with traditional mechanical processing technique, tubing hydraulic expanding-forming technology can process part complex-shaped, in light weight, good rigidity, and can effectively reduce the follow-up machining operation of mould parts quantity and Forming Workpiece, so tubing hydraulic expanding-forming technology has obtained in die industry and auto industry in recent years using widely.
Rational selection material, suitable preform, rational load path etc. are depended in the success or failure of tubing hydraulic expanding-forming, so before implementing the tubing hydraulic bulging process, determining of the detection of material behavior and load path is an extremely important job, and exploitation corresponding device thereof and equipment become the focus of tubing hydraulic expanding-forming technical field.
Present test of tubing hydraulic expanding-forming and experimental facilities adopt " external control topping up booster-type " usually, promptly need external hydraulic feed system special-purpose, complicated, costliness to control liquid medium in the tubing, to guarantee the required hydraulic coupling that is shaped, very high to the automaticity requirement of equipment and mold.Existing before this people has proposed some hydraulic expanding-forming devices: disclose a kind of integrally forming machine that is used for hydraulic expanding-forming as Chinese patent ZL95229851.1, its adopts external hydraulic feed system to provide hydraulic coupling for tube bulge, this apparatus structure complexity, can not apply axial force, require high to the environmental condition of using forming tube; Chinese patent ZL00208694.8 discloses a kind of interior forming machine of pressing, the external hydraulic feed system provides hydraulic coupling for forming tube, need to dispose a forcing press simultaneously for forming tube is applied axial force, the smooth bulging of realizing tubing of the pressure by reasonable coupling highly pressurised liquid and the axial displacement of press ram.This device adopts two cover autonomous control systems to control the tubing forming process, and complex structure, operation inconvenience, application cost are high.
Tubing hydraulic expanding-forming equipment that exploitation can be used on the UP machine, non-external control topping up booster-type is a developing direction from now on.Chinese patent ZL02104881.9 discloses a kind of inner high-pressure formation process with low pressure source, and the method by propelling piston bar extrusion molding chamber increases forming liquid pressure.This method requires press device that two kinds of power and two kinds of motions can be provided: one is used for pipe end is sealed, and another is used to promote piston rod, requires high to using environmental condition; This method is not provided with booster cavity or directly booster cavity and forming cavity is made an integral body, and diameter of piston rod is subjected to the restriction of forming tube diameter, can cause hydraulic coupling to increase not enough phenomenon during large deformation.
The utility model content
The purpose of this utility model is exactly to overcome above-mentioned deficiency, disclose a kind of novel structure, simple, easy to operate, cost is low a kind of in the tubing hydraulic expanding-forming device of fluid infusion booster-type.
The utility model is made up of charged piston, supercharging cylinder body, y-type seal ring, pressure head, O RunddichtringO, top board, spacing circle, lower platen, core, screw and base.The supercharging cylinder body is cylindrical, and it is big to offer into the upper end perpendicular to axis in the body, and the little stairstepping inner chamber in bottom, and connecting is mutually being opened one and is being the annular groove of interior circle with little inner chamber circle on the transverse plane of its bottom; The center of top board and lower platen has the through hole corresponding with little inner chamber circle and coaxial with annular groove; At the upper end of the base groove and the counterbore that have storing O RunddichtringO coaxial with lower platen; The O RunddichtringO is inserted respectively in the groove of supercharging cylinder body and base, is pressed on respectively in two grooves by screw by top board, lower platen; Pressure head is configured in the through hole of the booster cavity of supercharging cylinder body and connected top board by the O RunddichtringO; The spacing snare is contained between the last transverse plane of the periphery of top board, lower platen and supercharging cylinder body lower flat and base; Core is seated in the base counterbore by the O RunddichtringO, and the bottom of counterbore has a horizontal through hole with its perforation.
Described charged piston, upper end and flange make and are integral, lower end is offered and is that ring-shaped step, y-type seal ring are fitted on this step, the cylindrical diameter that its flange is following and highly and the inner cavity size offered of the top of pressurized cylinder corresponding.
Described pressure head profile is the multidiameter shape, there is an axial aperture centre, pressure head one end is slightly less than pipe internal diameter, the other end equals tube outer diameter substantially, two diameter differences have formed a ring-shaped step, end face in the larger diameter end of pressure head offers radially sulculus, and communicates with axial aperture, and radially sulculus and axial aperture are guided the highly pressurised liquid of booster cavity into the forming tubular product chamber.
Described top board, lower platen be shape ringwise, and outside diameter is slightly less than the supercharging cylinder body, and diameter of bore is offered the diameter of through hole corresponding to the bottom of supercharging cylinder body.
Described spacing circle outside dimension is corresponding with the outside dimension of supercharging cylinder body, and internal diameter and top board, lower platen coupling are equipped with, and its height is decided according to the bulging section length of processed pipe.
Owing to adopted the said apparatus structure, during work, liquid is injected the inner chamber of supercharging cylinder body, insert corresponding shaping dies on supercharging cylinder body lower end plane and the base between the transverse plane and in the spacing circle time, charged piston moves downward under the promotion of press ram, liquid in the supercharging cylinder body is squeezed and forms high pressure and mobile in pipe, tubing is realized free bulge under the effect of highly pressurised liquid; When descending charged piston touched pressure head, pressure head can apply axial force to forming tube, promptly realized the axial compression bulging of tubing.
The utility model has the advantages that:
1, the utlity model has simple in structure, do not need the external hydraulic feed system, easy to operate, low cost of manufacture, do not need special equipment, special place, can directly use intensity and forming property on-the-spot, that sell on-the-spot test tubing at tubing, on common single action press, can use, for small-sized, slim hollow object, even can on flat-nose pliers, use;
2, not only the processing of free bulge, axial compression bulging and odd-shaped cross section hollow can be carried out, the test of forming tubular product performance, the test of hydraulic expanding-forming load path can also be applied to tubing;
3, liquid booster cavity and forming tubular product chamber are designed to separate structure, make the liquid booster cavity can be in time replenish big quantity of fluid in the forming tubular product chamber, and forming liquid pressure size is not subjected to the restriction of forming tube diameter, and supercharging is reliable, the hollow of the large deformation that can be shaped; Change the booster cavity diameter of charged piston and supercharging cylinder body, can change the speed size that hydraulic coupling changes;
4, change the length of pressure head or the initiation time that stroke can be controlled axial force;
5, change the overflow value of overflow valve, can make the pressure in the shape process into.
Description of drawings
Fig. 1 is the utility model assembling schematic diagram;
Fig. 2 is the charged piston schematic diagram;
Fig. 3 is the pressure head schematic diagram.
Among the figure: 1. charged piston 2. supercharging cylinder body 3.Y RunddichtringOs 4. pressure head 5.O RunddichtringOs 6. top boards 7. pipes 8. liquid 9. spacing circles 10. lower platens 11. cores 12. screws 13. bases 14. horizontal through hole 15. flange 16. booster cavities, 17. ring-shaped steps (charged piston) 18. sulculus 19. axial aperture 20. larger diameter end, 21. ring-shaped steps (pressure head) 22. smaller diameter end radially
Geometric parameter below in conjunction with accompanying drawing and tubing: pipe range 110mm, external diameter 31.75mm, wall thickness 0.75mm are that example is described further embodiment.
The specific embodiment
According to shown in Figure 1, the utility model mainly is made up of charged piston 1, supercharging cylinder body 2, y-type seal ring 3, pressure head 4, O RunddichtringO 5, top board 6, spacing circle 9, lower platen 10, core 11, screw 12 and base 13, supercharging cylinder body 2 is cylindrical, it is big to offer into the upper end perpendicular to axis in the body, the little stairstepping inner chamber in bottom, and mutually connect, on the transverse plane of its bottom, opening one and be the annular groove of interior circle with little inner chamber circle; The center of top board 6 and lower platen 10 has the through hole corresponding with little inner chamber circle and coaxial with annular groove; The upper end of base 13 and lower platen 10 coaxial have groove and a counterbore of putting O RunddichtringO 5; O RunddichtringO 5 is inserted respectively in the groove of supercharging cylinder body 2 and base 13, is pressed on respectively in two grooves by screw 12 by top board 6, lower platen 10; Pressure head 4 profiles are the multidiameter shape, and the center has an axially extending bore, and it is configured in the small through hole of supercharging cylinder body 2 lower ends and in the through hole of connected top board 6 by O RunddichtringO 5; Spacing circle 9 is sleeved on the periphery of top board 6, lower platen 10 and supercharging cylinder body 2 lower flat and the base 13 between the transverse plane; Core 11 is seated in the counterbore of base 13 by O RunddichtringO 5; Like this when the two ends of processed pipe being inserted by O RunddichtringO 5 respectively in the gap of supercharging cylinder body 2 lower end through holes and pressure head 4 formation, when inserting in the gap that the counterbore core 11 and base 13 upper ends offered forms, the smaller diameter end 22 of the pressure head 4 more smaller than pipe internal diameter is inserted pipe one end, core 11 inserts the other end of pipes, and the pipe end unstability is wrinkling when preventing that pipe is subjected to axial force; O RunddichtringO 5 is the initial sealing state of pipe when being pressed on the shaping pipe outer wall, when constantly down advancing along with charged piston, fluid pressure constantly increases in the device, owing to be subjected to the constraint of groove and pressing plate, the direction of O RunddichtringO 5 first contact liqs is subjected to the highly pressurised liquid extruding, the distortion aggravation, thus the high pressure idiomorphism of realizing more reliable performance seals; Have the counterbore coaxial with the through hole of lower platen 10 in base 13 upper ends, the bottom of this counterbore has a horizontal through hole 14 with its perforation, is used to connect overflow valve and Pressure gauge assembly, so that the pressure when changing the overflow value control tube bulge of overflow valve; Spacing circle 9 is sleeved on periphery, supercharging cylinder body 2 lower end planes and the base 13 of top board 6, lower platen 10 between the transverse plane, and its height is decided according to the bulging section length of processed pipe.
During device work, directly the two ends of pipe being inserted gap neutralization that supercharging cylinder body 2 bottom inner chambers and pressure head 4 form respectively inserts in the formed gap of core 11 and base 13 upper ends offering of counterbore, pressure head 4 is not installed, the highly pressurised liquid that piston moves downward generation under external force directly flows to tubing inside, and tubing can be realized free bulge in the effect of highly pressurised liquid; When installing pressure head 4 additional, highly pressurised liquid flows to tubing inside through the radially sulculus 18 and the axial aperture 19 of pressure head 4, when the piston of motion touches pressure head 4, begins to apply axial force to tubing, and tubing is realized the axial compression bulging under the acting in conjunction of hydraulic coupling and axial force; When different shaping die cavitys is inserted on supercharging cylinder body 2 lower end planes and the base 13 between the transverse plane and spacing circle 9 in the time, adopt free bulge and axial compression bulging all can realize the shaping of various odd-shaped cross section hollow.
Illustrate according to Fig. 2, charged piston 1 upper end and flange 15 make and are connected as a single entity, lower end has ring-shaped step 17, and y-type seal ring 3 is fitted on this step 17, the diameter of the cylindrical diameter of its flange below 15 and height and the booster cavity 16 offered of the top of supercharging cylinder body 2, highly corresponding.Flange 15 is to be convenient to pack in supercharging cylinder body booster cavity 16 and take out charged piston 1, and the y-type seal ring of installing on the ring-shaped step 17 3 is used for the highly pressurised liquid of the booster cavity 16 on supercharging cylinder body 2 tops is sealed.
Illustrate according to Fig. 3, pressure head 4 profiles are the multidiameter shape, an axially extending bore 19 is being opened in the centre, the smaller diameter end 22 of pressure head is slightly less than pipe internal diameter, larger diameter end 20 equals tube outer diameter substantially, and two diameter differences have formed a ring-shaped step 21, offers radially sulculus 18 at the end face of the larger diameter end 20 of pressure head, and communicate with axially extending bore 19, its effect is by radially sulculus 18 and axially extending bore 19 are guided the highly pressurised liquid in the booster cavity 16 into the forming tubular product chamber; When the charged piston 1 of motion when touching pressure head 4,21 pairs of pipe ends of ring-shaped step apply axial force, for firm pipe fitting, prevent that pipe end is wrinkling, and the end that the smaller diameter end 22 of pressure head 4 is inserted processed tubing; The length or the stroke that change pressure head 4 can change the time that axial force begins to apply.

Claims (3)

1, a kind of interior fluid infusion booster-type tubing hydraulic expanding-forming device, it is characterized in that: it mainly is made up of charged piston (1), supercharging cylinder body (2), y-type seal ring (3), pressure head (4), O RunddichtringO (5), top board (6), spacing circle (9), lower platen (10), core (11), screw (12) and base (13), supercharging cylinder body (2) is cylindrical, offer into that the upper end is big, the little stairstepping inner chamber in bottom in the body perpendicular to axis, and mutually connect, on the transverse plane of its bottom, opening one and be the annular groove of interior circle with little inner chamber circle; The center of top board (6) and lower platen (10) has the through hole corresponding with little inner chamber circle and coaxial with annular groove; At the upper end of base (13) groove and the counterbore that have storing O RunddichtringO (5) coaxial with lower platen (10); O RunddichtringO (5) is inserted respectively in the groove of supercharging cylinder body (2) and base (13), is pressed on respectively in two grooves by screw (12) by top board (6), lower platen (10); Pressure head (4) is configured in by O RunddichtringO (5) in the through hole of the booster cavity (16) of supercharging cylinder body (2) and connected top board (6), and spacing circle (9) is sleeved on the periphery of top board (6), lower platen (10) and supercharging cylinder body (2) lower flat and base (13) and goes up between the transverse plane; Core (11) is seated in the counterbore of base (13) by O RunddichtringO (5), and the bottom of counterbore has a horizontal through hole (14) with its perforation.
2, a kind of interior fluid infusion booster-type tubing hydraulic expanding-forming device according to claim 1, it is characterized in that: described charged piston (1) upper end and flange (15) make and are one, lower end has ring-shaped step (17), y-type seal ring (3) is fitted on this step (17), and this charged piston (1) is fitted in the big inner chamber in upper end of supercharging cylinder body (2).
3, a kind of interior fluid infusion booster-type tubing hydraulic expanding-forming device according to claim 1, it is characterized in that: described pressure head (4) profile is the multidiameter shape, the centre has an axial aperture (19), pressure head one end is slightly less than pipe internal diameter, the other end equals tube outer diameter substantially, two diameter differences have formed a ring-shaped step (21), offer radially sulculus (18) at the end face of the larger diameter end (20) of pressure head, and communicate with axial aperture (19).
CNU2008201042961U 2008-06-07 2008-06-07 Internal fluid infusion pressure boost type hydraulic expanding device for pipe material Expired - Fee Related CN201201008Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CNU2008201042961U CN201201008Y (en) 2008-06-07 2008-06-07 Internal fluid infusion pressure boost type hydraulic expanding device for pipe material

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101507996B (en) * 2009-03-23 2011-04-20 哈尔滨工业大学 Quick determination method of load path of fittings hydraulic formation
CN102601250A (en) * 2012-03-20 2012-07-25 哈尔滨工程大学 Liquid medium-based expanding device for shape memory alloy pipe joint
CN104181099A (en) * 2014-08-11 2014-12-03 桂林电子科技大学 Device for method for measuring guide area friction coefficient during hydraulic forming of metal pipe
CN105855350A (en) * 2016-03-29 2016-08-17 桂林电子科技大学 Thin-wall metal pipe impact hydraulic forming method and device
CN105964755A (en) * 2016-05-24 2016-09-28 桂林电子科技大学 Multifunctional automatic inner-high-pressure forming machine
CN109227871A (en) * 2018-11-05 2019-01-18 南京肯确智能科技有限公司 The hollow swollen pattern of round log has and its processing technology
CN110153267A (en) * 2019-07-02 2019-08-23 哈尔滨理工大学 A kind of manufacturing process of the special process part based on the forming of pipe internal-filling liquid

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101507996B (en) * 2009-03-23 2011-04-20 哈尔滨工业大学 Quick determination method of load path of fittings hydraulic formation
CN102601250A (en) * 2012-03-20 2012-07-25 哈尔滨工程大学 Liquid medium-based expanding device for shape memory alloy pipe joint
CN102601250B (en) * 2012-03-20 2014-01-29 哈尔滨工程大学 Liquid medium-based expanding device for shape memory alloy pipe joint
CN104181099A (en) * 2014-08-11 2014-12-03 桂林电子科技大学 Device for method for measuring guide area friction coefficient during hydraulic forming of metal pipe
CN105855350A (en) * 2016-03-29 2016-08-17 桂林电子科技大学 Thin-wall metal pipe impact hydraulic forming method and device
CN105855350B (en) * 2016-03-29 2018-04-10 桂林电子科技大学 A kind of thin-wall metal tube impact hydraulic forming method and building mortion
CN105964755A (en) * 2016-05-24 2016-09-28 桂林电子科技大学 Multifunctional automatic inner-high-pressure forming machine
CN105964755B (en) * 2016-05-24 2018-01-09 桂林电子科技大学 A kind of multifunction automatic internal high-pressure forming machine
CN109227871A (en) * 2018-11-05 2019-01-18 南京肯确智能科技有限公司 The hollow swollen pattern of round log has and its processing technology
CN109227871B (en) * 2018-11-05 2021-06-11 南京肯确智能科技有限公司 Hollow log expansion die and processing technology thereof
CN110153267A (en) * 2019-07-02 2019-08-23 哈尔滨理工大学 A kind of manufacturing process of the special process part based on the forming of pipe internal-filling liquid

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090304

Termination date: 20110607

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