CN107350330A - A kind of left-right asymmetry formula forming high pressure in pipe equipment - Google Patents
A kind of left-right asymmetry formula forming high pressure in pipe equipment Download PDFInfo
- Publication number
- CN107350330A CN107350330A CN201710607275.5A CN201710607275A CN107350330A CN 107350330 A CN107350330 A CN 107350330A CN 201710607275 A CN201710607275 A CN 201710607275A CN 107350330 A CN107350330 A CN 107350330A
- Authority
- CN
- China
- Prior art keywords
- pipe
- pressure
- hair
- thrust cylinder
- cut somebody
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/039—Means for controlling the clamping or opening of the moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/045—Closing or sealing means
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a kind of left-right asymmetry formula forming high pressure in pipe equipment, the internal high pressure forming equipment includes clamping pressure machine, pressure charging system, electric control system, mold, lower mould, left oil pump, right oil pump, an installation left side on the table is cut somebody's hair, the right side is cut somebody's hair, left thrust cylinder, right thrust cylinder；The equipment ensure that pressure release failure will not occur in forming process for the high pressure inside tubing, avoid tubing and form fold in formation zone, the generation that tubing feed supplement when rapid deformation occurs produces the phenomenon of spalling not in time is it also avoid simultaneously, the final realization for ensureing that tubing part is stable gradually shaping and setting.
Description
Technical field
The invention belongs to forming high pressure in pipe technical field, in particular to a kind of left-right asymmetry formula tubing inner high voltage
Former.
Background technology
Forming high pressure in pipe principle is：After upper and lower mould matched moulds, cut somebody's hair by left and right to tubing seal simultaneously toward pipe
Injection pressure forming medium in material, cut somebody's hair in left and right axial feed with realized under the collective effect of internal pressure tubing inner high voltage into
Shape.The part obtained by the manufacturing process has cost low, in light weight compared with conventional machining process, saves material, processing
Process is few, and forming quality is high, good mechanical property, the series of advantages such as stiffness and strength height.
The problem of existing forming high pressure in pipe equipment is present be：
1. existing forming high pressure in pipe equipment when making part, is by controlling left and right thrust cylinder or so to cut somebody's hair by force
Displacement processed carries out axial supplement, and the enforceable mechanical feed profile of such a active is very difficult to match blank deformation patch contour forming
Process, easily causes feed supplement deficiency or feed supplement is excessive, it is difficult to which rational control feed supplement amount, control are got up more difficult；
2. by artificially set feed supplement amount control left and right thrust cylinder cut somebody's hair displacement carry out feed supplement be also easy to produce feed supplement amount deficiency,
Cause part that the phenomenon of spalling occurs because of feed supplement deficiency, not in time during the swollen type, cause the swollen type failure of high pressure；
3. control of additive raw material sensitivity is not high, also it is easily caused part and is bent in forming process because pipe internal pressure reaches material
Clothes point pipe causes the material at pipe end two quickly to be flowed into mold cavity after quick deformation occurs, be also easy to produce mouth of pipe both ends from
Open left and right to cut somebody's hair, the highly pressurised liquid for causing to have set up inside pipe leaks, and can not ensure most basic internal high pressure
Molding condition；
4. feed supplement amount is excessive, it is easily caused part and the forming defects such as corrugation, fold occurs in formation zone, thickens, cause part
Swollen type failure.
The content of the invention
It is specially that one kind utilizes a left side present invention aims at a kind of left-right asymmetry formula forming high pressure in pipe equipment is provided
Right feed supplement is cut somebody's hair the forming high pressure in pipe equipment of fluid power Follow-up seal, with overcome present in existing device technology it is above-mentioned not
Foot.
The present invention adopts the technical scheme that：
A kind of left-right asymmetry formula forming high pressure in pipe equipment, the internal high pressure forming equipment include clamping pressure machine,
Pressure charging system, electric control system, mold, lower mould, left oil pump, right oil pump, an installation left side on the table is cut somebody's hair, the right side pushes away
Head, left thrust cylinder, right thrust cylinder；Wherein, mold on clamping pressure machine moved cross beam and by moved cross beam and is led
It is connected to post with forcing press master cylinder, left and right cut somebody's hair is connected with left and right thrust cylinder respectively, and crosshead displacement biography is connected with lead,
Left cylinder hydraulic pressure sensor, right cylinder hydraulic pressure sensor are connected on left and right thrust cylinder, pressure charging system includes supercharging
Device, water pump, booster are connected with pressure sensor；The crosshead displacement sensor, left and right cylinder hydraulic pressure sensor, left oil
Pump, right oil pump and electric control system connection；The left oil pump, right oil pump are connected with left and right thrust cylinder oil circuit respectively；
The internal high pressure forming equipment is after clamping pressure machine matched moulds, by high-pressure medium under electric control system control
Pressurizeed respectively by pressure charging system by the loading curve of setting, meanwhile, it is left and right to cut somebody's hair in the presence of thrust cylinder to mould
Interior motion forms sealing until holding out against tubing both ends；In forming process, pressure charging system continues loading curve by setting to tubing
High-pressure medium is squeezed into inside die cavity, internally the lower pipe of the pressure effect of high-pressure medium deforms, and pipe both ends push away left and right
Reaction force on head reduces, less than the reaction preset value each set, the hydraulic pressure sensor point on left and right thrust cylinder
The data feedback each collected electric control system is not returned into, electric control system controls left and right thrust cylinder respective respectively
Reaction force preset value lower feeding with ensure be arranged on thrust cylinder on it is left and right cut somebody's hair and the real-time Follow-up seal of pipe end, ensure
Pressure release failure will not occur in forming process for the high pressure inside tubing, avoid tubing and form fold in formation zone, simultaneously
The generation that tubing feed supplement when rapid deformation occurs produces the phenomenon of spalling not in time is it also avoid, it is final to ensure that tubing part is steady
Fixed realization gradually shaping and setting.
Present invention also offers a kind of left-right asymmetry formula forming high pressure in pipe method, it is characterised in that utilizes above-mentioned
Internal high pressure forming equipment, its specific steps include：
(1) matched moulds stage：Mold is locked on clamping pressure machine moved cross beam, lower mode locking on the table, left and right
Thrust cylinder and left and right, which are cut somebody's hair, is in original state, and ready pipe is put into lower mold cavity, clamping pressure owner's cylinder
Descending matched moulds；
(2) the fluid infusion sealing stage：While clamping pressure owner's cylinder descending matched moulds, crosshead displacement sensor sends letter respectively
Number, electric control system sends instruction, and high-pressure medium is injected with discharge pipe in the pipe inner chamber of the water pump of pressure charging system into mould
Air inside base, meanwhile, left and right thrust cylinder promote left and right cut somebody's hair to the feeding of mouth of pipe both ends until hold out against mouth of pipe both ends formed it is low
Means of press seals, now, the reaction force that mouth of pipe both ends are acted on left cut somebody's hair reach pre-set value A1, and mouth of pipe both ends act on the right side and pushed away
It can be steady state value or the song using the time as transverse axis that reaction force on head, which reaches pre-set value A2, described A1, A2,
Line changing value；
(3) feed phase is shaped：This stage is under the conditions of holding out against mouth of pipe both ends and forming low pressure seal, passes through electrical control
System control pressure charging system control booster is pressurizeed by the loading curve of setting, internally under the pressure effect of high-pressure medium
Pipe deforms, and increasingly presses close to dies cavity wall, and now the material at pipe both ends can produce while pipe deforms
The raw trend flowed to pipe deformed area, reaction force of the pipe both ends on left and right cut somebody's hair reduces therewith, now, left and right to push away
Hydraulic pressure sensor on power cylinder changes the analog signal collected to electric control system, electric-controlled by A/D respectively
What system processed sent that instruction controls the feeding of left and right thrust cylinder to ensure to be arranged on thrust cylinder left and right cuts somebody's hair and pipe end is real
When Follow-up seal, and pushed ahead by left and right cut somebody's hair of real-time Follow-up seal, realize the feed supplement of tube billet axial feed with
Final part patch contour forming；
(4) stage is molded：After tubing part patch contour forming, electric control system control sends instruction, and booster is retracted, pipe
Material cavity pressure reduces rapidly, and the hydraulic pressure sensor on left and right thrust cylinder is signaled to electric control system respectively,
Electric control system sends instruction, and left and right thrust cylinder retracts original state, and the up moved cross beam of forcing press master cylinder moves upwards,
Take out formed product.
Compared with existing forming high pressure in pipe equipment, the present invention has the advantages that：
1. due to the internal high pressure forming equipment for fluid power Follow-up seal of being cut somebody's hair in forming process using left and right feed supplement, a left side is utilized
The collection reaction of right thrust cylinder hydraulic pressure sensor is applied to left and right thrust cylinder in the reaction force data message of left and right thrust cylinder
The row passive feed supplement of control intelligence in real time, realize that left and right is cut somebody's hair Follow-up seal, the high-pressure medium inside real-time ensuring pipe can be pressed
Hyperbaric environment is set up according to default loading curve.Primary high-pressure forming condition is ensured.
2. or so the cut somebody's hair internal high pressure forming equipment of fluid power Follow-up seal of feed supplement be that a kind of passive feeding follows sealing, left and right
Cut somebody's hair according to feed supplement amount required when being deformed upon in the presence of pipe internally high-pressure medium, carry out rational feed supplement in real time.
Avoid existing left and right cut somebody's hair feed supplement deficiency that forced displacement feed supplement easily causes or feed supplement it is excessive and cause part spalling, part
The shaping failure that corrugation, part thicken.
Brief description of the drawings
Fig. 1 is left-right asymmetry formula forming high pressure in pipe device structure schematic diagram；
Fig. 2 is formed product structural representation；
In figure：1st, clamping pressure machine；102nd, moved cross beam；103rd, lead；104th, left crosshead displacement sensor；2nd, it is pressurized
System；201st, booster；202nd, water pump；203rd, pressure sensor；3rd, electric control system；4th, left thrust cylinder；5th, right thrust cylinder；
6th, mould；601st, mold；602nd, lower mould；7th, a left side is cut somebody's hair；8th, the right side is cut somebody's hair；9th, left cylinder hydraulic pressure sensor；10th, right cylinder liquid
Pressure pressure sensor；11st, left oil pump；12nd, right oil pump.
Embodiment
It is special to a kind of symmetrical formula forming high pressure in pipe equipment and technology of the present invention with reference to the accompanying drawings and examples
Sign is further described.
A kind of left-right asymmetry formula forming high pressure in pipe equipment, as shown in Figure 1-2, the internal high pressure forming equipment includes
Clamping pressure machine (1), pressure charging system (2), electric control system (3), mold (601), lower mould (602), left oil pump (11),
Right oil pump (12), the left side of installation on the table is cut somebody's hair (7), the right side is cut somebody's hair (8), left thrust cylinder (4), right thrust cylinder (5)；Wherein,
Mold (601) be arranged on clamping pressure machine moved cross beam (102) and by moved cross beam (102) and lead (103) and
Forcing press master cylinder (101) connects, and left and right cut somebody's hair is connected with left and right thrust cylinder respectively, and lead is connected with crossbeam position on (103)
Move and pass (104), left cylinder hydraulic pressure sensor (9), right cylinder hydraulic pressure sensor are connected on left and right thrust cylinder
(10), pressure charging system (2) includes booster (201), water pump (202), booster (201) and is connected with pressure sensor (203)；Institute
State crosshead displacement sensor (104), left and right cylinder hydraulic pressure sensor, left oil pump (11), right oil pump (12) and electrical control system
System connection；The left oil pump (11), right oil pump (12) are connected with left and right thrust cylinder oil circuit respectively；
The embodiment additionally provides a kind of left-right asymmetry formula forming high pressure in pipe method, it is characterised in that utilizes above-mentioned
Internal high pressure forming equipment, its specific steps includes：
(1) matched moulds stage：Mold is locked on clamping pressure machine moved cross beam, lower mode locking on the table, left and right
Thrust cylinder and left and right, which are cut somebody's hair, is in original state, and ready pipe is put into lower mold cavity, clamping pressure owner's cylinder
Descending matched moulds；
(2) the fluid infusion sealing stage：While clamping pressure owner's cylinder descending matched moulds, crosshead displacement sensor sends letter respectively
Number, electric control system sends instruction, and high-pressure medium is injected with discharge pipe in the pipe inner chamber of the water pump of pressure charging system into mould
Air inside base, meanwhile, left and right thrust cylinder promote left and right cut somebody's hair to the feeding of mouth of pipe both ends until hold out against mouth of pipe both ends formed it is low
Means of press seals, now, the reaction force that mouth of pipe both ends are acted on left cut somebody's hair reach pre-set value A1, and mouth of pipe both ends act on the right side and pushed away
It can be steady state value or the song using the time as transverse axis that reaction force on head, which reaches pre-set value A2, described A1, A2,
Line changing value；
(3) feed phase is shaped：This stage is under the conditions of holding out against mouth of pipe both ends and forming low pressure seal, passes through electrical control
System control pressure charging system control booster is pressurizeed by the left and right loading curve each set, internally high-pressure medium
The lower pipe of pressure effect deforms, and increasingly presses close to dies cavity wall, now the material at pipe both ends deforms in pipe
While can produce the trend flowed to pipe deformed area, reaction force of the pipe both ends on left and right cut somebody's hair reduce therewith, this
When, the hydraulic pressure sensor on left and right thrust cylinder changes the analog signal collected to electrical control system by A/D respectively
System, what electric control system sent that instruction controls the feeding of left and right thrust cylinder to ensure to be arranged on thrust cylinder left and right cuts somebody's hair
With the real-time Follow-up seal of pipe end, and pushed ahead by left and right cut somebody's hair of real-time Follow-up seal, realize that tube billet axially enters
Contour forming is pasted to feed supplement and final part；
(4) stage is molded：After tubing part patch contour forming, electric control system control sends instruction, and booster is retracted, pipe
Material cavity pressure reduces rapidly, and the hydraulic pressure sensor on left and right thrust cylinder is signaled to electric control system respectively,
Electric control system sends instruction, and left and right thrust cylinder retracts original state, and the up moved cross beam of forcing press master cylinder moves upwards,
Take out formed product.
Claims (2)
1. a kind of left-right asymmetry formula forming high pressure in pipe equipment, it is characterised in that the internal high pressure forming equipment includes matched moulds
Forcing press (1), pressure charging system (2), electric control system (3), mold (601), lower mould (602), left oil pump (11), right oil
Pump (12), the left side of installation on the table is cut somebody's hair (7), the right side is cut somebody's hair (8), left thrust cylinder (4), right thrust cylinder (5)；Wherein, upper mould
Tool (601) is arranged on clamping pressure machine moved cross beam (102) and passes through moved cross beam (102) and lead (103) and pressure
Owner's cylinder (101) is connected, and left and right cut somebody's hair is connected with left and right thrust cylinder respectively, and crosshead displacement biography is connected with lead (103)
(104) left cylinder hydraulic pressure sensor (9), right cylinder hydraulic pressure sensor (10), are connected on left and right thrust cylinder, is increased
Pressure system (2) includes booster (201), water pump (202), booster (201) and is connected with pressure sensor (203)；The crossbeam
Displacement transducer (104), left and right cylinder hydraulic pressure sensor, left oil pump (11), right oil pump (12) and electric control system circuit
Connection；The left oil pump (11), right oil pump (12) are connected with left and right thrust cylinder oil circuit respectively；
The internal high pressure forming equipment is after clamping pressure machine matched moulds, distinguishes high-pressure medium under electric control system control
Pressurizeed by pressure charging system by the loading curve of setting, meanwhile, left and right cut somebody's hair is transported in the presence of thrust cylinder into mould
It is dynamic to form sealing until holding out against tubing both ends；In forming process, pressure charging system continues loading curve by setting to tubing die cavity
High-pressure medium is squeezed into inside, and internally the lower pipe of the pressure effect of high-pressure medium deforms, and pipe both ends are on left and right cut somebody's hair
Reaction force reduce, less than the reaction preset value each set, hydraulic pressure sensor on left and right thrust cylinder respectively will
The data feedback each collected returns electric control system, and electric control system controls left and right thrust cylinder respective anti-respectively
Active force preset value lower feeding with ensure be arranged on thrust cylinder on it is left and right cut somebody's hair and the real-time Follow-up seal of pipe end, ensure that pipe
Pressure release failure will not occur in forming process for the high pressure inside material, avoid tubing and form fold in formation zone, while also keep away
Exempt from the generation that tubing feed supplement when rapid deformation occurs produces the phenomenon of spalling not in time, final guarantee tubing part stabilization
Realize gradually shaping and setting.
A kind of 2. left-right asymmetry formula forming high pressure in pipe method, it is characterised in that utilize the inner high voltage described in claim 1
Former, its specific steps include：
(1) matched moulds stage：Mold is locked on clamping pressure machine moved cross beam, lower mode locking on the table, left and right thrust
Cylinder and left and right, which are cut somebody's hair, is in original state, and ready pipe is put into lower mold cavity, and clamping pressure owner's cylinder is descending
Matched moulds；
(2) the fluid infusion sealing stage：While clamping pressure owner's cylinder descending matched moulds, crosshead displacement sensor sends signal respectively,
Electric control system sends instruction, and the pipe inner chamber injection high-pressure medium of the water pump of pressure charging system into mould is to discharge in pipe
The air in portion, meanwhile, it is close until holding out against mouth of pipe both ends formation low pressure to the feeding of mouth of pipe both ends that left and right thrust cylinder promotes left and right to cut somebody's hair
Envelope, now, the reaction force that mouth of pipe both ends are acted on left cut somebody's hair reach pre-set value A1, and mouth of pipe both ends are acted on the right side cuts somebody's hair
Reaction force reach pre-set value A2, described A1, A2 can be steady state value or using the time as transverse axis curve become
Change value；
(3) feed phase is shaped：This stage is under the conditions of holding out against mouth of pipe both ends and forming low pressure seal, passes through electric control system
Control pressure charging system control booster is pressurizeed by the loading curve of setting, internally the lower pipe of the pressure effect of high-pressure medium
Deform, increasingly press close to dies cavity wall, now the material at pipe both ends can be produced while pipe deforms to
The trend of pipe deformed area flowing, reaction force of the pipe both ends on left and right cut somebody's hair reduce therewith, now, left and right thrust cylinder
On hydraulic pressure sensor the analog signal collected is changed to electric control system, electrical control system by A/D respectively
System send that instruction controls the feeding of left and right thrust cylinder to ensure to be arranged on thrust cylinder it is left and right cut somebody's hair with pipe end in real time with
Dynamic sealing, and being pushed ahead by left and right cut somebody's hair of real-time Follow-up seal, realize the feed supplement of tube billet axial feed with it is final
Part patch contour forming；
(4) stage is molded：After tubing part patch contour forming, electric control system control sends instruction, and booster is retracted, tubing type
Cavity pressure reduces rapidly, and the hydraulic pressure sensor on left and right thrust cylinder is signaled to electric control system respectively, electrically
Control system sends instruction, and left and right thrust cylinder retracts original state, and the up moved cross beam of forcing press master cylinder moves upwards, takes out
Formed product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607275.5A CN107350330A (en) | 2017-07-24 | 2017-07-24 | A kind of left-right asymmetry formula forming high pressure in pipe equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607275.5A CN107350330A (en) | 2017-07-24 | 2017-07-24 | A kind of left-right asymmetry formula forming high pressure in pipe equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107350330A true CN107350330A (en) | 2017-11-17 |
Family
ID=60285160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710607275.5A Pending CN107350330A (en) | 2017-07-24 | 2017-07-24 | A kind of left-right asymmetry formula forming high pressure in pipe equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107350330A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590372A (en) * | 2018-12-04 | 2019-04-09 | 湘潭大学 | A kind of pipe fitting compound molding device |
| CN110749433A (en) * | 2019-11-12 | 2020-02-04 | 江苏一重数控机床有限公司 | Pressure follow-up device for expansion joint pressure test platform and control method thereof |
| CN111195673A (en) * | 2020-01-13 | 2020-05-26 | 哈尔滨工业大学 | Liquid filling press forming device for variable cross-section special-shaped pipe fitting |
| CN112935060A (en) * | 2021-01-25 | 2021-06-11 | 广东思豪内高压科技有限公司 | Internal high-pressure forming device for stainless steel pipe fitting and control system thereof |
| CN112935062A (en) * | 2021-01-25 | 2021-06-11 | 广东思豪内高压科技有限公司 | Internal high-pressure forming device for stainless steel pipe fitting and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471444A (en) * | 2000-10-19 | 2004-01-28 | ����˹���ʹ�˾ | Apparatus and method for hydroforming a tubular part |
| DE102004015121B3 (en) * | 2004-03-27 | 2005-10-27 | Daimlerchrysler Ag | hydroforming |
| CN201304440Y (en) * | 2008-12-05 | 2009-09-09 | 佛山市康思达液压机械有限公司 | A pipe liquid-filling forming mould frame structure |
| CN104384289A (en) * | 2014-12-08 | 2015-03-04 | 哈尔滨工业大学 | Large-tonnage short-stroke inner high pressure forming machine |
| CN105598265A (en) * | 2015-12-21 | 2016-05-25 | 哈尔滨奔马科技有限公司 | Overall forming method of small-relative-bending-radius and large-diameter-thickness-ratio thin-walled bent pipe fitting |
-
2017
- 2017-07-24 CN CN201710607275.5A patent/CN107350330A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471444A (en) * | 2000-10-19 | 2004-01-28 | ����˹���ʹ�˾ | Apparatus and method for hydroforming a tubular part |
| DE102004015121B3 (en) * | 2004-03-27 | 2005-10-27 | Daimlerchrysler Ag | hydroforming |
| CN201304440Y (en) * | 2008-12-05 | 2009-09-09 | 佛山市康思达液压机械有限公司 | A pipe liquid-filling forming mould frame structure |
| CN104384289A (en) * | 2014-12-08 | 2015-03-04 | 哈尔滨工业大学 | Large-tonnage short-stroke inner high pressure forming machine |
| CN105598265A (en) * | 2015-12-21 | 2016-05-25 | 哈尔滨奔马科技有限公司 | Overall forming method of small-relative-bending-radius and large-diameter-thickness-ratio thin-walled bent pipe fitting |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590372A (en) * | 2018-12-04 | 2019-04-09 | 湘潭大学 | A kind of pipe fitting compound molding device |
| CN110749433A (en) * | 2019-11-12 | 2020-02-04 | 江苏一重数控机床有限公司 | Pressure follow-up device for expansion joint pressure test platform and control method thereof |
| CN111195673A (en) * | 2020-01-13 | 2020-05-26 | 哈尔滨工业大学 | Liquid filling press forming device for variable cross-section special-shaped pipe fitting |
| CN111195673B (en) * | 2020-01-13 | 2021-01-12 | 哈尔滨工业大学 | Liquid filling press forming device for variable cross-section special-shaped pipe fitting |
| CN112935060A (en) * | 2021-01-25 | 2021-06-11 | 广东思豪内高压科技有限公司 | Internal high-pressure forming device for stainless steel pipe fitting and control system thereof |
| CN112935062A (en) * | 2021-01-25 | 2021-06-11 | 广东思豪内高压科技有限公司 | Internal high-pressure forming device for stainless steel pipe fitting and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107350330A (en) | A kind of left-right asymmetry formula forming high pressure in pipe equipment | |
| CN107234160A (en) | A kind of symmetrical formula threeway forming high pressure in pipe equipment | |
| CN107262585A (en) | A kind of symmetrical formula forming high pressure in pipe equipment | |
| CN104338818B (en) | A kind of internal high pressure forming equipment | |
| CN106734495B (en) | A kind of forming high pressure in pipe method of Varied clearance | |
| CN201189531Y (en) | Improved bulging hydraulic press | |
| CN103464562B (en) | Cavity low-internal-pressure manufacturing process | |
| CN108526284A (en) | The outer low pressure molding method of high pressure and molding machine in a kind of pipe fitting | |
| CN104084469A (en) | Tee pipe hydraulic molding device | |
| CN104607526B (en) | Intra-pipe high pressure forming system | |
| CN102962309A (en) | Forming method and device for thin-wall T-pipe | |
| CN201201008Y (en) | Internal fluid infusion pressure boost type hydraulic expanding device for pipe material | |
| CN103223434B (en) | A kind of device for pipe internal high pressure and method | |
| CN102240690B (en) | Extrusion molding technology of three-way pipe extrusion molding device | |
| CN103272879A (en) | Upset-bulge compound internal high pressure forming method and device for long and thin deformed straight pipe | |
| CN202028627U (en) | Three-way pipe extrusion molding device | |
| CN201295718Y (en) | Radial pressing and bulging device for pipes | |
| CN101168179A (en) | Hydraulic forming equipment | |
| CN104624770A (en) | Internal high-pressure forming system for pipe fittings | |
| CN103212619A (en) | Variable-mold-clamping-force pipe internal high-pressure forming device and method | |
| CN107309320A (en) | A kind of left-right asymmetry formula threeway forming high pressure in pipe equipment | |
| CN204448967U (en) | A kind of pipe fitting internal high pressure forming device | |
| CN106670296A (en) | Internal high-pressure forming die for forming pipe fitting of step structure and forming method thereof | |
| CN206215732U (en) | A kind of internal high pressure forming mould for shaping hierarchic structure pipe fitting | |
| CN103691794A (en) | Self-pressurization forming method for hollow parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171117 |
|
| WD01 | Invention patent application deemed withdrawn after publication |