CN104289584A - Sheet thermal incremental forming method with hydraulic back-pressure - Google Patents
Sheet thermal incremental forming method with hydraulic back-pressure Download PDFInfo
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- CN104289584A CN104289584A CN201410527700.6A CN201410527700A CN104289584A CN 104289584 A CN104289584 A CN 104289584A CN 201410527700 A CN201410527700 A CN 201410527700A CN 104289584 A CN104289584 A CN 104289584A
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Abstract
The invention discloses a sheet thermal incremental forming method with hydraulic back-pressure and belongs to the technical field of metal forming machining. According to the sheet thermal incremental forming method, a supporting base with a liquid tank is arranged on a numerically controlled incremental forming machine, the liquid tank is connected with an oil heating and control system by use of a pipeline, the supporting base is connected with the oil heating and control system by use of a connecting pipeline to form a hydraulic loop, and the liquid tank is full of a conduction oil; a sheet to be formed is fixed on the supporting base, the oil heating and control system runs to press the conduction oil to form certain pressure in the hydraulic loop, and the sheet is expanded in advanced before being deformed under the pressure; after the system runs for certain time, the supporting base and the sheet are heated by the conduction oil and gradually reach a certain equilibrium temperature; the numerically controlled incremental forming machine works to complete the forming of the sheet. The sheet thermal incremental forming method with the hydraulic back-pressure is capable of realizing the forming of parts large in forming angle, and is especially suitable for incremental forming of lightweight alloys poor in cold forming properties.
Description
Technical field:
The invention belongs to and belong to metal forming processing technique field, be specifically related to a kind of hot progressive molding method of plate with hydraulic pressure back pressure.
Technical background:
Progressive molding is a kind of sheel metal flexible processing method, and sheet forming technology and Numeric Control Technology organically combine by it, realize the digitlization flexible production of sheet material.Plate progressive molding, based on the thought of " Layered manufacturing ", controls shaping tool heads along setting orbiting motion by numerical control program, successively forms the three-dimensional enveloping surface of part, realize plastic forming.Progressive molding constructional device is simple, greatly can save the cost of die cost and sample specimens, is applicable to very much small lot, multi items, the shaping of complex-shaped sheet metal parts.
For the plate of forming property difference under normal temperature, the mode of warm progressive molding can be adopted to carry out progressive molding, warm mode of heating has multiple: installed by base for supporting and be placed in the incubator of uniform temperature, make the temperature that the forming temperature of plate reaches certain, incubator building mortion is bulky, and tool heads and machine tool running space are limited to by incubator finish dimensional; The forming mode of tool heads heating is followed in some employing local, and such as LASER HEATING and electricity are from resistance heating etc., and the appliance arrangement costs such as LASER HEATING are high.
Summary of the invention:
The object of the invention is, utilize plate swollen advantage plate progressive molding performance improved with temperature in advance, have hydraulic pressure pwc swollen before providing a kind of shaping, the hot progressive molding method of the plate of carrying liqs back pressure in forming process, utilizes high-temperature medium in hydraulic system directly to heat plate simultaneously.
A kind of plate with hydraulic pressure back pressure provided by the present invention hot progressive molding method concrete steps are as follows:
(1) on existing Metal CNC Incremental Forming lathe, arrange a set of base for supporting containing liquid pool, oil temperature heating and controlling system is connected with described liquid pool by pipeline, falling heat-transfer oil in described liquid pool;
(2) plate to be formed is fixed on described base for supporting by pressing plate, and described base for supporting and oil temperature heating and controlling system form hydraulic loop by connecting line, and described conduction oil directly contacts with described shaping plate;
(3) run described oil temperature heating and controlling system, described conduction oil, at described hydraulic loop Inner eycle, forms certain pressure in hydraulic loop, and it is swollen in advance that this pressure makes described plate to be formed produce to a certain degree before progressive molding shape;
(4), after described oil temperature heating and controlling system running certain hour, described base for supporting and plate to be formed temperature under the heat effect of described conduction oil raises, and progressively reaches certain equilibrium temperature;
(5) described oil temperature heating and controlling systems stay work, described conduction oil keeps circulation in described hydraulic loop, and described plate plate to be formed and described conduction oil keep certain equilibrium temperature; Described Metal CNC Incremental Forming lathe work, forming tool head presses desired trajectory motion under the control of NC numerical control program, progressively extrudes plate to be formed and makes sheet metal deformation, and distortion is progressively accumulated and Forming Workpiece; Under the heating that in whole forming process, plate to be formed is in described conduction oil all the time and back pressure effect.
The present invention make full use of plate in advance the swollen advantageous effect to progressive molding performance and temperature increase to the improvement of sheet metal formability, the progressive molding performance of sheet material can be improved further, the part forming making forming angle larger is achieved, and is particularly suitable for the progressive molding of the alloy in lightweight of cold forming poor performance.
Accompanying drawing illustrates:
Fig. 1 manufacturing process principle schematic of the present invention.
In figure: 1: base for supporting; 2: pressing plate; 3: forming tool head; 4. plate to be formed.
Fig. 2 manufacturing process process schematic of the present invention.
Wherein Fig. 2 (a) represents plate clamping; Fig. 2 (b) represents oil temperature heating and controlling service system hydraulic circulation, plate heating and swollen in advance; Fig. 2 (c) represents progressive molding under plate back pressure.
Detailed description of the invention:
The concrete steps of the plate warm progressive molding method of a kind of carrying liqs back pressure provided by the present invention are as follows:
(1) a set of base for supporting containing liquid pool is set on existing Metal CNC Incremental Forming lathe;
(2) oil temperature heating and controlling system is connected with described liquid pool by pipeline, falling heat-transfer oil in described liquid pool;
(3) be fixed on base for supporting by plate to be formed by pressing plate, periphery compresses, and forms sealing to liquid in liquid pool;
(4) oil temperature heating and controlling system and liquid pool form hydraulic loop by connecting line;
(5) oil temperature heating and controlling system running, the conduction oil of design temperature, at oil temperature heating and controlling system, pipeline and liquid pool Inner eycle, forms certain pressure in hydraulic loop, and it is swollen in advance that this pressure makes plate produce to a certain degree before being deformed;
(6), after oil temperature heating and controlling system running certain hour, base for supporting and plate produce temperature rise under the heat effect of conduction oil, and progressively reach certain equilibrium temperature;
(7) oil temperature heating and controlling systems stay work, conduction oil keeps circulation in system, and plate and liquid pool keep certain equilibrium temperature; By NC code reader bed, Metal CNC Incremental Forming lathe works, and forming tool head presses desired trajectory motion under the control of NC numerical control program, and progressively extrude plate and make sheet metal deformation, distortion is progressively accumulated and Forming Workpiece; In whole forming process, plate is all the time under the heating and back pressure effect of conduction oil.
Claims (1)
1. the hot progressive molding method of the plate with hydraulic pressure back pressure, is characterized in that these manufacturing process concrete steps are as follows:
(1) on existing Metal CNC Incremental Forming lathe, arrange a set of base for supporting containing liquid pool, oil temperature heating and controlling system is connected with described liquid pool by pipeline, falling heat-transfer oil in described liquid pool;
(2) plate to be formed is fixed on described base for supporting by pressing plate, and described base for supporting and oil temperature heating and controlling system form hydraulic loop by connecting line, and described conduction oil directly contacts with described shaping plate;
(3) run described oil temperature heating and controlling system, described conduction oil, at described hydraulic loop Inner eycle, forms certain pressure in hydraulic loop, and it is swollen in advance that this pressure makes described plate to be formed produce to a certain degree before progressive molding;
(4), after described oil temperature heating and controlling system running certain hour, described base for supporting and plate to be formed temperature under the heat effect of described conduction oil raises, and progressively reaches certain equilibrium temperature;
(5) described oil temperature heating and controlling systems stay work, described conduction oil keeps circulation in described hydraulic loop, and described plate to be formed and described conduction oil keep certain equilibrium temperature; Described Metal CNC Incremental Forming lathe work, forming tool head presses desired trajectory motion under the control of NC numerical control program, progressively extrudes plate to be formed and makes sheet metal deformation, and distortion is progressively accumulated and Forming Workpiece; Under the heating that in whole forming process, plate to be formed is in described conduction oil all the time and back pressure effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527700.6A CN104289584B (en) | 2014-10-09 | 2014-10-09 | A kind of hot progressive molding method of plate with hydraulic backpressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527700.6A CN104289584B (en) | 2014-10-09 | 2014-10-09 | A kind of hot progressive molding method of plate with hydraulic backpressure |
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| CN104289584A true CN104289584A (en) | 2015-01-21 |
| CN104289584B CN104289584B (en) | 2016-06-08 |
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| CN201410527700.6A Active CN104289584B (en) | 2014-10-09 | 2014-10-09 | A kind of hot progressive molding method of plate with hydraulic backpressure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964778A (en) * | 2016-06-16 | 2016-09-28 | 西安理工大学 | Method for reducing axial forming force in single-point incremental forming process |
| CN106064199A (en) * | 2016-05-26 | 2016-11-02 | 南京航空航天大学 | A kind of aviation breadth light alloy plate differential temperature progressive molding method and device |
| CN107570585A (en) * | 2017-09-12 | 2018-01-12 | 南京航空航天大学 | A kind of fiber metal board forming device and method |
| CN110102637A (en) * | 2019-06-13 | 2019-08-09 | 福州大学 | A kind of single-point progressive molding hot air workbench and its application method |
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| JPH01133617A (en) * | 1987-11-19 | 1989-05-25 | Tokyo Seat Kk | Pressurized air forming method and device used for its method |
| JPH07328734A (en) * | 1994-06-08 | 1995-12-19 | Nippon Yakin Kogyo Co Ltd | Manufacture of cutting tool made of titanium alloy |
| CN1824409A (en) * | 2005-08-08 | 2006-08-30 | 孙旭光 | External beating metal plate material high temperature ultrahigh water pressure once shaping technology, method and equipment |
| CN102139304A (en) * | 2010-11-17 | 2011-08-03 | 安徽工业大学 | Thermal hydro-mechanical drawing forming method for dot matrix self-impedance electrical heating plates |
| CN102248056A (en) * | 2011-06-13 | 2011-11-23 | 北京航空航天大学 | Method for improving sheet forming limit |
| KR20120040394A (en) * | 2010-10-19 | 2012-04-27 | 주식회사 한진중공업 | Forming apparatus of aluminium sheet for ship structure |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01133617A (en) * | 1987-11-19 | 1989-05-25 | Tokyo Seat Kk | Pressurized air forming method and device used for its method |
| JPH07328734A (en) * | 1994-06-08 | 1995-12-19 | Nippon Yakin Kogyo Co Ltd | Manufacture of cutting tool made of titanium alloy |
| CN1824409A (en) * | 2005-08-08 | 2006-08-30 | 孙旭光 | External beating metal plate material high temperature ultrahigh water pressure once shaping technology, method and equipment |
| KR20120040394A (en) * | 2010-10-19 | 2012-04-27 | 주식회사 한진중공업 | Forming apparatus of aluminium sheet for ship structure |
| CN102139304A (en) * | 2010-11-17 | 2011-08-03 | 安徽工业大学 | Thermal hydro-mechanical drawing forming method for dot matrix self-impedance electrical heating plates |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106064199A (en) * | 2016-05-26 | 2016-11-02 | 南京航空航天大学 | A kind of aviation breadth light alloy plate differential temperature progressive molding method and device |
| CN106064199B (en) * | 2016-05-26 | 2018-03-09 | 南京航空航天大学 | A kind of aviation breadth light alloy plate differential temperature progressive molding method and device |
| CN105964778A (en) * | 2016-06-16 | 2016-09-28 | 西安理工大学 | Method for reducing axial forming force in single-point incremental forming process |
| CN107570585A (en) * | 2017-09-12 | 2018-01-12 | 南京航空航天大学 | A kind of fiber metal board forming device and method |
| CN110102637A (en) * | 2019-06-13 | 2019-08-09 | 福州大学 | A kind of single-point progressive molding hot air workbench and its application method |
| CN110102637B (en) * | 2019-06-13 | 2023-12-08 | 福州大学 | Single-point progressive forming hot air heating workbench and application method thereof |
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| Publication number | Publication date |
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| CN104289584B (en) | 2016-06-08 |
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Effective date of registration: 20191210 Address after: Room 1075, Caiying building, No.99 Tuanjie Road, Jiangbei new district, Nanjing, 211500, Jiangsu Province Patentee after: Nanjing vector forming Electromechanical Technology Co., Ltd Address before: 243002 Anhui city in Ma'anshan Province, Huashan District East Lake Road No. 59 Patentee before: Anhui University of Technology |
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