CN108555108B - A kind of tee tube branch pipe expansion forming method - Google Patents
A kind of tee tube branch pipe expansion forming method Download PDFInfo
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- CN108555108B CN108555108B CN201810329875.4A CN201810329875A CN108555108B CN 108555108 B CN108555108 B CN 108555108B CN 201810329875 A CN201810329875 A CN 201810329875A CN 108555108 B CN108555108 B CN 108555108B
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- pipe
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- mandril
- pressure medium
- push top
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Classifications
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- 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
- B21D26/037—Forming branched tubes
-
- 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
- B21D26/043—Means for controlling the axial pusher
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A kind of tee tube expansion forming method, wherein tee tube expansion forming device includes at least mold, pressure medium injection device, pressure push head device, pressure sensor, displacement sensor and controller；Controller is electrically connected with pressure sensor and displacement sensor respectively, and is also controlled and connected with the power plant module of pressure push head device, piston device and pressure medium injection device respectively；One aspect of the present invention has carried out Curve guide impeller to the structure of tee tube expansion forming device, while meeting operation ease and reliability, effectively increases the efficiency and collaboration continuity of its work；It realizes to pressure medium, the implementation monitoring of pressure and displacement having a haircut and take blame for others and adjust；On the other hand, tee tube Bulging Process is improved, interior pre-stretching bulging is first managed using branch pipe shaped portion material, the method for rear bulging outward is remarkably improved the uniformity of branch pipe bulging wall thickness, is not susceptible to rupture, effectively increases branch pipe bulging limiting altitude.
Description
Technical field
The present invention relates to tee tube expansion forming technical field, especially a kind of tee tube branch pipe expansion forming method.
Background technique
Tee tube bulging is pressurizeed by tube interior, and axial supplement realizes the forming of pipe.In actual production always
Wish that tee tube limit branch pipe height is the bigger the better, so as to reduce the subsequent welding sequence of part branch pipe, improves production efficiency
With reduce cost.
When traditional threeway bulging, under taken blame for others the effect of support protrusion branch pipe, retreated by trend protrusion direction, generally take blame for others
It is all made of constant pressure work.Current threeway bulging process process has following defects that one, due in forming process, lower top
Cylinder pressure is constant, if but in forming process start bulging when under take blame for others forming pressure height, material can be slowed down to raised branch cast
Chamber flowing, influences bulging height.If pressure value of taking blame for others under the later period is small, support pressure is inadequate, will cause raised branch tracheal rupture；
Two, when constant pressure of taking blame for others under supports branch pipe bulging, the material for shaping branch pipe is constantly in swollen state outside type chamber；Material is opened from just
Beginning, which is just constantly in, to be thinned in deformation, therefore constant support power forming difficulty is used to be local crowning aximal deformation value, different materials
It is different to shape difficulty, bulging height is low to be always the problem of perplexing its forming, and serious, shaping evenness of wall thickness is thinned
Difference, processing hardening is serious, and stable product quality is poor, controls precision and operation difficulty is also larger.
Summary of the invention
The object of the present invention is to provide a kind of tee tube branch pipe expansion forming method, it has compact-sized, and control is reliable
The high advantage with the tee tube branch pipe bulging limit.
The present invention is achieved like this, and a kind of tee tube expansion forming device includes at least mold, pressure medium injects
Device, pressure push head device, pressure sensor, displacement sensor and controller, wherein pressure medium injection dress is for type
Injection pressure medium in intracavitary pipe；Pressure push head device is used for extrusion tube blank end and pressure medium, and pressure medium generates
So that the pressure of pipe expansion forming；Branch pipe bulging location contacts on piston device and pipe, and in branch pipe expansion forming
Apply active force；Pressure sensor is used to detect the pressure of pressure medium；Displacement sensor is for detecting pressure push head device
The work shift of the mandril of push top and piston device；Controller is electrically connected with pressure sensor and displacement sensor respectively, and
It also controls and connects with the power plant module of pressure push head device, piston device and pressure medium injection device respectively.
The T-shaped type chamber for accommodating pipe is equipped in the mold；The pressure medium injection device includes and pipe inner cavity
The pressure medium delivery pipe of connection and the delivery pump for being connected to pressure medium delivery pipe outer end；The pressure push head device packet
Press machine and the push top with press machine transmission connection are included, which includes that opposite with pipe both ends respectively left push top and the right side push away
Head, and pressure medium is sealed in pipe by two push tops with pipe cooperation；The pressure medium delivery pipe be embedded in it is left push top or
In right push top.
The piston device includes the hydraulic-driven with the mandril of branch pipe bulging location contacts and with mandril transmission connection
Cylinder；Lubricant delivery pipe, and the gap that the upper end of lubricant delivery pipe and mandril, mold and pipe surround are embedded in mandril
Place's connection, lubricant delivery pipe are connected with lubricant delivery pump.
The delivery pump, press machine, hydraulic drive cylinder and lubricant delivery pump are controlled with controller and are connected, the pressure
Force snesor is arranged on one end that left push top or right push top are contacted with pressure medium.
Preferably: being additionally provided with electronic check valve in the pressure medium delivery pipe, the electronic check valve and controller control
System connection.
The present invention also describes a kind of tee tube branch pipe expansion forming method, which is characterized in that the manufacturing process is based on upper
Tee tube expansion forming device is stated, the manufacturing process includes the following steps:
(1) type for pipe being put into mold is intracavitary, starts pressure medium injection device, the injection pressure medium in pipe；
(2) start pressure push head device, so that left push top and right push top is approached the both ends of contact pipe respectively, by pressure medium
The initial position X for being sealed in pipe, and marking push top locating0；
(3) press machine pushes the pressure medium in push top feeding extrusion tube blank, obtains initial internal pressure P in pipe0When support
Stop press machine work, wherein P0The deformation critical pressure of < pipe；
(4) start pressure push head device, so that approaching the branch pipe bulging position of contact pipe at the top of mandril, and mark top
Initial position Y locating for bar0；
(5) while push top feeding extrusion tube blank end and pressure medium, mandril feeds up the branch pipe of extrusion tube blank
Bulging position, pressure medium are P to the pressure of pipeX1, mandril is P to the pressure of pipeY1, setting highest is moved in mandril
Position Y1Before, PY1With PX1Difference be consistently greater than the deformation critical pressure of pipe；
(6) mandril pushes the upward pre-tension deformation in branch pipe bulging position of pipe, when mandril is moved to setting extreme higher position
Y1When, start lubricant delivery pump, until the gap that mandril, mold and pipe surround is full of lubricant, at this time push top feeding
Position is X1；
(7) mandril reaches extreme higher position Y1After start to feed down, push top continue feed squeeze pressure medium, pressure be situated between
The pressure of confrontation pipe is PX2, mandril is P to the pressure of pipeY2, mandril is moved down into extreme lower position Y2Before, PX2With PY2It
Difference is consistently greater than the deformation critical pressure of pipe；
(8) the branch pipe bulging position of pipe is along the downward expansion forming of branch tubular cavity, until mandril be moved down into it is minimum
Position Y2, push top supplying position is X2, tee tube branch pipe shapes；
(9) pressure push head device drives push top to withdraw from, and mandril ejects the tee tube of forming upwards.
Preferably: in mandril from Y0It is moved to Y1During, PY1With PX1Difference move closer to pipe deformation it is critical
Pressure, and Y is reached in mandril1When, PY1With PX1Difference be less than the deformation critical pressure of pipe, and mandril is from Y0It is moved to Y1Speed
Degree and PY1With PX1Difference be positively correlated.
Preferably: in mandril from Y1It is moved to Y2During, PX2With PY2Difference move closer to pipe deformation it is critical
Pressure, and Y is reached in mandril2When, PY2With PX2Difference be less than the deformation critical pressure of pipe, and mandril is from Y1It is moved to Y2Speed
Degree and PX2With PY2Difference be positively correlated.
It is set the invention has the benefit that one aspect of the present invention improve to the structure of tee tube expansion forming device
Meter effectively increases the efficiency and collaboration continuity of its work while meeting operation ease and reliability；It realizes pair
The implementation of pressure medium, the pressure had a haircut and taken blame for others and displacement is monitored and is adjusted；On the other hand, tee tube bulging mistake is improved
Journey first manages interior pre-stretching bulging using branch pipe shaped portion material, and the method for rear bulging outward is remarkably improved branch pipe bulging wall
Thick uniformity, is not susceptible to rupture, effectively increases branch pipe bulging limiting altitude, it is without increasing the production cost
Bulging height can be effectively improved, and reduces the defect of bulging.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of tee tube expansion forming device one embodiment of the present invention.
Fig. 2 is the structural schematic diagram of another embodiment of tee tube expansion forming device of the present invention.
Fig. 3 is that mandril of the present invention is moved to setting extreme higher position Y1When structural schematic diagram.
Fig. 4 is that mandril of the present invention is moved to extreme lower position Y2When structural schematic diagram.
1, left push top 2, lower die 3, mandril 4, right push top 5, upper mold 6, pipe 7, pressure medium conveying in the figure
Pipe.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.
As shown in Figs 1-4, the invention is realized in this way, the tee tube expansion forming device includes at least mold, pressure
Power media injection device, pressure push head device, piston device, pressure sensor, displacement sensor and controller, wherein pressure
Power media injection device is used for the injection pressure medium into type intracavitary pipe 6；Pressure push head device is used for extrusion tube blank end
And pressure medium, pressure medium generate the pressure so that 6 expansion forming of pipe；Branch pipe bulging portion on piston device and pipe 6
Position contact, and apply active force in branch pipe expansion forming；Pressure sensor is used to detect the pressure of pressure medium；Displacement sensing
Device is used to detect the work shift of the push top of pressure push head device and the mandril of piston device；Controller respectively with pressure sensing
Device and displacement sensor electrical connection, and it is also dynamic with pressure push head device, piston device and pressure medium injection device respectively
Power module control connection；In the specific implementation, pressure medium injection device includes corresponding pipeline and liquid medium pump installation, control
Liquid medium pump installation processed can be such that pressure medium pump enters in pipe 6, and after tee tube forming, antiport extracts pipe 6 out
In pressure medium so that pressure medium cycle operation utilize；And pressure push head device is moved using powered push top, to squeeze
Pressure pressure medium makes pressure medium generate the internal pressure acted on 6 inner wall of pipe；Piston device is contacted with pipe 6, and in pipe
Before forming, always to the application of branch pipe bulging position and pressure medium opposite effect power on pipe 6, to pass through between the two
The smooth forming of pressure difference control tee tube；And the pressure sensor and displacement sensor can be arranged according to the actual situation it is several
It is a, the initial pressure of the pressure medium on pressure medium injection device pipeline is such as set, and be arranged and to be connected to 6 inner cavity of pipe
Pressure sensor then can 6 inner wall of real-time monitoring pipe forming pressure；Displacement sensor is at least separately positioned on pressure push top dress
On the mandril of the push top and piston device set, it is respectively used to the displacement of real-time monitoring push top and mandril, controller combines displacement
The signal of sensor and pressure sensor realizes the continuous accurate control to tee tube expansion forming.
In the specific implementation, the T-shaped type chamber for accommodating pipe 6 is equipped in the mold, and including upper mold 5 and lower die 2；Institute
Pressure medium injection device is stated to include the pressure medium delivery pipe 7 being connected to pipe inner cavity and be connected to pressure medium delivery pipe
The delivery pump of 7 outer ends；The pressure push head device includes press machine and the push top with press machine transmission connection, the push top packet
Opposite with pipe both ends respectively left push top 1 and right push top 4 are included, and pressure medium is sealed in pipe with the cooperation of pipe 6 by two push tops
In base 6；The pressure medium delivery pipe 7 is embedded in left 1 or right push top 4 of push top；Delivery pump is controlled through pressure medium delivery pipe 7
Pumping for pressure medium is realized into the rate of pressure medium in pipe inner cavity, and by controlling its operating；Pressure medium is defeated
It send pipe 7 to be embedded in left 1 or right push top 4 of push top, not only increases the leakproofness of pressure medium delivery pipe 7, also simplify structure,
Keep pressure medium injection device and pressure push head device work coordination reliable.
The key structure that another of the invention is implemented is piston device, it includes and branch pipe bulging location contacts
Mandril 3 and the hydraulic drive cylinder being sequentially connected with mandril 3；Lubricant delivery pipe 8 is embedded in mandril 3, and lubricant conveys
The upper end of pipe 8 is connected to the gap location that mandril 3, mold and pipe 6 surround, lubricant delivery pipe 8 and lubricant delivery pump phase
Even；In actual setting, the pressure value that hydraulic drive cylinder is used to drive mandril 3 mobile passes to controller after electricity conversion,
Controller can in real time between indirect monitoring mandril 3 and pipe actuating pressure；It is defeated by lubricant in time with the deformation of pipe
It send pipe 8 to be filled with lubricant to deformed region, the efficiency and quality of tee tube expansion forming can be effectively improved.
Certainly, in the design of other details structure, the delivery pump, press machine, hydraulic drive cylinder and lubricant are defeated
It send pump to control with controller to connect, left push top or right one end contacted with pressure medium of having a haircut is arranged in the pressure sensor
On, to realize Collaborative Control, improve processing efficiency；It is additionally provided with electronic check valve in the pressure medium delivery pipe 7, this is electronic
Check valve and controller control connect, and pressure medium can be replenished in time by electronic check valve, and avoid its reflux.
The invention also discloses a kind of tee tube branch pipe expansion forming methods, which is characterized in that the manufacturing process is based on upper
Tee tube expansion forming device is stated, the manufacturing process includes the following steps:
(1) type for pipe being put into mold is intracavitary, starts pressure medium injection device, the injection pressure medium in pipe；
(2) start pressure push head device, so that left push top and right push top is approached the both ends of contact pipe respectively, by pressure medium
The initial position X for being sealed in pipe, and marking push top locating0；
(3) press machine pushes the pressure medium in push top feeding extrusion tube blank, obtains initial internal pressure P in pipe0When support
Stop press machine work, wherein P0The deformation critical pressure of < pipe；
(4) start pressure push head device, so that approaching the branch pipe bulging position of contact pipe at the top of mandril, and mark top
Initial position Y locating for bar0；
(5) while push top feeding extrusion tube blank end and pressure medium, mandril feeds up the branch pipe of extrusion tube blank
Bulging position, pressure medium are P to the pressure of pipeX1, mandril is P to the pressure of pipeY1, setting highest is moved in mandril
Position Y1Before, PY1With PX1Difference be consistently greater than the deformation critical pressure of pipe；
(6) mandril pushes the upward pre-tension deformation in branch pipe bulging position of pipe, when mandril is moved to setting extreme higher position
Y1When, start lubricant delivery pump, until the gap that mandril, mold and pipe surround is full of lubricant, at this time push top feeding
Position is X1；
(7) mandril reaches extreme higher position Y1After start to feed down, push top continue feed squeeze pressure medium, pressure be situated between
The pressure of confrontation pipe is PX2, mandril is P to the pressure of pipeY2, mandril is moved down into extreme lower position Y2Before, PX2With PY2It
Difference is consistently greater than the deformation critical pressure of pipe；
(8) the branch pipe bulging position of pipe is along the downward expansion forming of branch tubular cavity, until mandril be moved down into it is minimum
Position Y2, push top supplying position is X2, tee tube branch pipe shapes；
(9) pressure push head device drives push top to withdraw from, and mandril ejects the tee tube of forming upwards.
Tee tube expansion forming method based on step is a kind of interior height that can effectively improve the tee tube branch pipe bulging limit
Pressing formation method；Its basic functional principle be it is such, mandril 3 first inwardly feeds at the branch pipe bulging position of pipe, promotes this
Reversed pre-tension deformation first occurs for position, the position contacted with 3 head of mandril since the effect of friction does not deform substantially, and
Then increased table by pulling force, push top and the pressure medium collective effect that mandril 3 provides in the hanging part in 3 head both sides of mandril
Area, lateral overhanging portion supplementary material outside pipe, offsets surface area and increases and wall thickness under the action of pressure medium and push top
It is thinned；When mandril 3 moves upward to extreme higher position Y1When, then move downward；As overpressure increases, by above-mentioned pre-stretching
The material of deformation, to outside pipe bulging and enter mold branch tubular cavity in, to shape tee tube；In big pre- of this process surface area
Deformable material enters branch tubular cavity, first manages interior pre-stretching bulging using branch pipe shaped portion material, the method for rear bulging outward can
The uniformity for significantly improving branch pipe bulging wall thickness is not susceptible to rupture, and effectively increases branch pipe bulging limiting altitude.
Certainly, in order to meet actual processing efficiency and control the requirement of precision, the present invention carries out displacement-pressure dependence segmentation
Control, when implementation, in mandril from Y0It is moved to Y1During, PY1With PX1Difference move closer to the deformation critical pressure of pipe,
And Y is reached in mandril1When, PY1With PX1Difference be less than the deformation critical pressure of pipe, and mandril is from Y0It is moved to Y1Speed with
PY1With PX1Difference be positively correlated；In mandril from Y1It is moved to Y2During, PX2With PY2Difference move closer to pipe deformation it is critical
Pressure, and Y is reached in mandril2When, PY2With PX2Difference be less than the deformation critical pressure of pipe, and mandril is from Y1It is moved to Y2Speed
Degree and PX2With PY2Difference be positively correlated；I.e. in the first stage, PY1With PX1Difference be variable, as mandril is from Y0Close to Y1Mistake
Cheng Zhong has the larger value to move closer to the deformation critical pressure of pipe, and with PY1With PX1The variation control mandril of difference is mobile
Speed, i.e., close to Y1When, rock deformation pressure suffered by the rate and pipe of mandril is in lower easily-controllable section, guarantees pipe
In the stability close to setting deformation limit, in actual processing, in mandril from Y1It is moved to Y2During, PX2
It is gradually increased, PY2Corresponding therewith to increase, pressure change is dynamic process；Likewise, when mandril reaches Y2Afterwards, it and pushes up
After the gap that bar, mold and pipe surround is full of lubricant, to accelerate branch pipe shaping rate, the control of the above process is also used
System, i.e., as mandril is from Y1It is moved to Y2During, branch pipe bulging more tends to the limit, then rate of deformation and pressure difference are reduced, with
Guarantee control precision and forming quality.
Claims (3)
1. a kind of tee tube branch pipe expansion forming method, which is characterized in that the manufacturing process is based on tee tube expansion forming device,
The manufacturing process includes the following steps:
(1) type for pipe being put into mold is intracavitary, starts pressure medium injection device, the injection pressure medium in pipe；
(2) start pressure push head device, so that left push top and right push top is approached the both ends of contact pipe respectively, pressure medium is sealed
In pipe, and the initial position X for marking push top locating0；
(3) press machine pushes the pressure medium in push top feeding extrusion tube blank, obtains initial internal pressure P in pipe0Stop pressure when support
Power machine works, wherein P0The deformation critical pressure of < pipe；
(4) start pressure push head device, so that approaching the branch pipe bulging position of contact pipe at the top of mandril, and mark mandril institute
The initial position Y at place0；
(5) while push top feeding extrusion tube blank end and pressure medium, mandril feeds up the branch pipe bulging of extrusion tube blank
Position, pressure medium are P to the pressure of pipeX1, mandril is P to the pressure of pipeY1, setting extreme higher position Y is moved in mandril1
Before, PY1With PX1Difference be consistently greater than the deformation critical pressure of pipe；
(6) mandril pushes the upward pre-tension deformation in branch pipe bulging position of pipe, when mandril is moved to setting extreme higher position Y1When,
Start lubricant delivery pump, supplying position is until the gap that mandril, mold and pipe surround full of lubricant, is had a haircut at this time
X1；
(7) mandril reaches extreme higher position Y1After start to feed down, push top continue feed squeeze pressure medium, pressure medium pair
The pressure of pipe is PX2, mandril is P to the pressure of pipeY2, mandril is moved down into extreme lower position Y2Before, PX2With PY2Difference begin
It is greater than the deformation critical pressure of pipe eventually；
(8) the branch pipe bulging position of pipe is along the downward expansion forming of branch tubular cavity, until mandril is moved down into extreme lower position
Y2, push top supplying position is X2, tee tube branch pipe shapes；
(9) pressure push head device drives push top to withdraw from, and mandril ejects the tee tube of forming upwards；
The tee tube expansion forming device include at least mold and
Pressure medium injection device, for the injection pressure medium into type intracavitary pipe；
Pressure push head device, is used for extrusion tube blank end and pressure medium, and pressure medium generates the pressure so that pipe expansion forming
Power；
Piston device, the branch pipe bulging location contacts on it and pipe, and apply active force in branch pipe expansion forming；
Pressure sensor, for detecting the pressure of pressure medium；
Displacement sensor, for detecting the work shift of the push top of pressure push head device and the mandril of piston device；
Controller is electrically connected with pressure sensor and displacement sensor respectively, and also respectively with pressure push head device, piston device
And the power plant module of pressure medium injection device controls connection；
The T-shaped type chamber for accommodating pipe is equipped in the mold；
The pressure medium injection device includes the pressure medium delivery pipe being connected to pipe inner cavity and is connected to pressure medium
The delivery pump of delivery pipe outer end；
The pressure push head device include press machine and with press machine transmission connection push top, the push top include respectively with pipe
Both ends opposite left push top and right push top, and pressure medium is sealed in pipe by two push tops with pipe cooperation；The pressure is situated between
Matter delivery pipe is embedded in left push top or right push top；
The piston device includes the hydraulic drive cylinder with the mandril of branch pipe bulging location contacts and with mandril transmission connection；
Lubricant delivery pipe, the gap that the upper end of lubricant delivery pipe and mandril, mold and pipe surround are embedded in mandril
Place's connection, lubricant delivery pipe are connected with lubricant delivery pump；
The delivery pump, press machine, hydraulic drive cylinder and lubricant delivery pump are controlled with controller and are connected, and the pressure passes
Sensor is arranged on one end that left push top or right push top are contacted with pressure medium；
It is additionally provided with electronic check valve in the pressure medium delivery pipe, the electronic check valve and controller control connect.
2. tee tube branch pipe expansion forming method as described in claim 1, which is characterized in that in mandril from Y0It is moved to Y1's
In the process, PY1With PX1Difference move closer to the deformation critical pressure of pipe, and reach Y in mandril1When, PY1With PX1Difference be less than
The deformation critical pressure of pipe, and mandril is from Y0It is moved to Y1Speed and PY1With PX1Difference be positively correlated.
3. tee tube branch pipe expansion forming method as described in claim 1, which is characterized in that in mandril from Y1It is moved to Y2's
In the process, PX2With PY2Difference move closer to the deformation critical pressure of pipe, and reach Y in mandril2When, PY2With PX2Difference be less than
The deformation critical pressure of pipe, and mandril is from Y1It is moved to Y2Speed and PX2With PY2Difference be positively correlated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329875.4A CN108555108B (en) | 2018-04-13 | 2018-04-13 | A kind of tee tube branch pipe expansion forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329875.4A CN108555108B (en) | 2018-04-13 | 2018-04-13 | A kind of tee tube branch pipe expansion forming method |
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| CN108555108A CN108555108A (en) | 2018-09-21 |
| CN108555108B true CN108555108B (en) | 2019-11-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109201842B (en) * | 2018-11-02 | 2023-12-15 | 安徽工业大学 | Electromagnetic pulse compound bulging device and bulging method for three-way pipe |
| CN111203468B (en) * | 2020-01-09 | 2021-07-20 | 中国原子能科学研究院 | Machining tool and machining method for forming multi-branch pipe of sodium distributor |
| CN111390005B (en) | 2020-03-24 | 2021-01-29 | 燕山大学 | Thin-wall straight pipe strengthening device and strengthening method |
| CN114148967B (en) * | 2021-12-14 | 2024-03-05 | 湖南星邦智能装备股份有限公司 | Emergency protection device and aerial work platform |
| CN114273859B (en) * | 2021-12-23 | 2022-12-06 | 福建同越管件有限公司 | Manufacturing method of welding-free integrally-formed air conditioner branch pipe |
| CN115647169B (en) * | 2022-12-08 | 2023-03-21 | 江苏新恒基特种装备股份有限公司 | Pressure adjusting device and method for hydraulic forming branch pipe of large-caliber ultra-long pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4462694B2 (en) * | 2000-01-31 | 2010-05-12 | 株式会社オプトン | Bulge processing equipment |
| CN104084469B (en) * | 2014-06-25 | 2016-02-03 | 温州蓝天管件阀门有限公司 | A kind of three-way pipe hydraulic forming device |
| KR20160149349A (en) * | 2015-06-17 | 2016-12-28 | 삼원동관 주식회사 | Hydroforming count punch apparatus |
| CN105436244B (en) * | 2015-12-16 | 2017-10-13 | 广东工业大学 | A kind of three-way pipe Internal High Pressure Forming on-line detecting system and method |
| CN107020315B (en) * | 2017-05-24 | 2018-08-07 | 南昌航空大学 | A method of using polytetrafluoroethylene film partial lubrication hydroforming three-way pipe |
| CN107234160A (en) * | 2017-07-24 | 2017-10-10 | 柳州科瑞科技有限公司 | A kind of symmetrical formula threeway forming high pressure in pipe equipment |
| CN107584000A (en) * | 2017-10-17 | 2018-01-16 | 柳州北斗星液压科技有限公司 | Multi-pass pipe forming system and method |
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Granted publication date: 20191115 |