CN105058796B - High polymer board incremental forming method based on metal backboard supporting - Google Patents
High polymer board incremental forming method based on metal backboard supporting Download PDFInfo
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- CN105058796B CN105058796B CN201510482596.8A CN201510482596A CN105058796B CN 105058796 B CN105058796 B CN 105058796B CN 201510482596 A CN201510482596 A CN 201510482596A CN 105058796 B CN105058796 B CN 105058796B
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- macromolecule
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- sheet material
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Abstract
The invention discloses a high polymer board incremental forming method based on metal backboard supporting. The method has the beneficial effects that firstly, a metal backboard provides effective rigidity and strength supporting for a high polymer board, reverse pressure can be exerted on a high polymer part through forming and rebounding, the stress condition of the high polymer part is effectively improved, and the high polymer part can be effectively prevented from being twisted and deformed partially in the machining process; secondly, the overall twist and deviation of the high polymer part in the forming process can be effectively avoided through the metal backboard; thirdly, the partial necking and thinning of the high polymer machined part can be effectively controlled through the rigidity supporting of the metal backboard, and the thickness of the high polymer machined part can be effectively controlled; and fourthly, the adaptability of an incremental forming process is improved, and application and popularization of the incremental forming technology in machining of the high polymer part are facilitated.
Description
Technical field
The present invention relates to a kind of progressive forming method of macromolecule sheet material, belongs to the progressive molding process technology of macromolecule sheet material
Field.
Background technology
Plate progressive molding (Incremental Sheet Forming, ISF) is the sixties in last century by the U.S.
One kind that Leszak is proposed has been carried out further by Japanese Songyuan City cyclopentadienyl husband etc. without mould flexible forming technology, the nineties to the technology
Research, gradually causes the attention of scholars.Progressive molding technology is a kind of based on computer technology, Numeric Control Technology and plasticity
Advanced manufacturing technology on forming technique basis, it is mainly characterized by being introduced into the think of of " Layered manufacturing " in rapid prototype manufacturing
Think, complex product three-dimensional CAD model is separated into into many sectional layers along shaping axis direction, that is, resolve into a series of equal pitch contours
Layer, and generates the machining locus in each equal pitch contour aspect, forming tool head under the control of the computer on the equal pitch contour layer plus
Work track is moved, and to sheet material progressive plastic processing is carried out.Progressive molding has degree of flexibility height, low production cost, product development week
The a series of feature such as the phase is short, in the extensive concern and research that receive scholars in recent years.
Except processing sheet metal, current progressive molding technique is gradually utilized to process macromolecule sheet material.Traditional note
The macromolecules such as shape, rotation molding, blow molding forming is moulded, is produced in enormous quantities using mould.For small quantities of
Amount, the processing of single-piece, existing forming technology is difficult to meet demand, can be very good to realize list using progressive molding technology
The individual, low cost of small lot macromolecule part, high efficiency processing, can greatly shorten the research and development of products cycle.
Macromolecular material has reasonable ductility, so its progressive molding is functional, progressive molding limiting angle one
As it is also larger.It is easy when being acted on by larger external force but relative to sheet metal, the rigidity of macromolecule sheet material, intensity are poor
Produce unstability torsional deformation.As shown in figure 3, sheet material is subject to the active force of tool heads to can be analyzed to axial force during progressive molding
Pz, radial force Pr, tangential force Pθ, except detrusion, moment of flexure and moment of torsion that these power can be certain to part generation, with processing
The increase of depth, tool heads also can gradually increase moment of flexure, the moment of torsion of high molecular forming part.Meanwhile, due to work in progressive molding
The friction repeatedly of tool head and macromolecule blank can cause plate temperature to raise, due to macromolecular material it is more sensitive to temperature, when
More than during certain critical temperature, material can occur a certain degree of softening.Make in temperature rise and bending square during progressive molding
With under, Process Technology of Polymer part is easy to produce torsional deformation due to poor rigidity, and this also directly influences progressive molding technique in height
Processed and applied in molecule sheet material.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide one kind can be effectively improved sheet material stress shape
Condition, realizes the progressive molding processing of macromolecule sheet material, is effectively improved the macromolecule sheet material progressive molding of the crudy of part
Process.
In order to realize above-mentioned target, the present invention is adopted the following technical scheme that：
A kind of progressive forming method of macromolecule sheet material supported based on metal backing, is characterized in that, comprise the steps：
1) according to macromolecule part shape, its shaping principal direction is determined；
2) according to step 1) in part forming principal direction, find out the maximum forming angle of part
3) metal supporting back board is selected according to macromolecule part material and thickness；
4) the progressive molding limiting angle θ of metal supporting back board is determinedmax, and cause
5) the metal supporting back board for choosing is placed in into macromolecule sheet material lower section, and is fixed at two ends using clamp device；
6) according to part C AD model, the progressive molding processing numerical control code of macromolecule part is generated；
7) the input processing numerical control code in lathe, completes part processing.
A kind of aforesaid progressive forming method of macromolecule sheet material supported based on metal backing, is characterized in that, the step
2) forming angle inFor Working position method arrow and the angle of Z axis.
A kind of aforesaid progressive forming method of macromolecule sheet material supported based on metal backing, is characterized in that, the step
3) in, supporting back board material selects aluminium sheet or copper coin；The thickness of supporting back board takes the 1/3-1/2 of macromolecule sheet metal thickness.
The beneficial effect that the present invention is reached：1) metal backing is provided with the rigidity of effect, strength support for macromolecule sheet material,
Simultaneously Form springback can apply buffer brake to macromolecule part, effectively improve the force-bearing situation of macromolecule part, can be effective
The bird caging for avoiding macromolecule part work in-process deforms；2) metal backing can be effectively improved in macromolecule part forming
Overall distortion deflection；3) metal backing rigid support can be thinning with the constriction of effective control Process Technology of Polymer part local, Ke Yishi
The effective control of existing Process Technology of Polymer part thickness；4) adaptability of progressive molding technique is improved, is contributed to progressive molding technology and is existed
Promoting the use of in the processing of macromolecule part.
Description of the drawings
Fig. 1 is supporting back board schematic diagram；
Fig. 2 is supporting back board fundamental diagram；
Fig. 3 is incremental forming with successive wrap surfaces Force principle figure.
The implication of reference in figure：
1- tool heads, 2- clamping devices, 3- metal backings, 4- macromolecule sheet materials.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
A kind of progressive forming method of macromolecule sheet material supported based on metal backing according to the present invention, can be effectively improved
The quality of macromolecule sheet material progressive molding part, specifically includes following steps：
1) according to macromolecule part shape, its shaping principal direction is determined.
2) according to step 1) in part forming principal direction, find out the maximum forming angle of partHere forming angleFor
Working position method swears the angle with Z axis.
3) metal supporting back board is selected according to macromolecule part material and thickness, here supporting back board material select aluminium sheet or
The preferable aluminium sheet of copper coin, especially plasticity and copper coin, the thickness of supporting back board typically takes the 1/3-1/2 of macromolecule sheet metal thickness.
4) the progressive molding limiting angle θ of metal supporting back board is determinedmax, and causeMainly prevent in high score
Sub- part is completed before processing, and metal supporting back board is because more than itself limit forming angle θmaxAnd rupture is occurred to early, rupture location
Intensity, rigidity can drastically decline, while necessary support force cannot be provided to Process Technology of Polymer part, do not reach due support and imitate
Really.
5) the metal supporting back board for choosing is placed in into macromolecule sheet material lower section, and is fixed at two ends using clamp device.
6) according to part C AD model, the progressive molding processing numerical control code of macromolecule part is generated.
7) the input processing numerical control code in lathe, completes part processing.
In prior art, macromolecule sheet material is all poor relative to sheet metal rigidity, intensity, while quicker to temperature
Sense, when in processing due to friction heat reach certain critical point after material can a certain degree of softening, in work in progressive molding
Under tool head is to the by-local forces of sheet material, it is easy to cause macromolecule sheet material to produce unstability distortion.Simultaneously as macromolecular material
Temperature is raised after softening, and in process very material is easy to, drip molding thickness thinning in temperature higher position generation constriction
It is no longer complies with the cosine lawCause thickness uncontrollable.
And in this method, select suitable material, the metal supporting back board of thickness to be placed in below macromolecule sheet material, in shaping
There is provided support, the higher rigidity of gripper shoe, intensity, and the elastic recovery in forming process for macromolecule sheet material can give high score
Sub- part applies external pressure P, as shown in figure 3, force-bearing situation of the macromolecule sheet material in progressive molding can be effectively improved, solves
The problems such as high molecular forming part unstability, distortion and thinning thickness constriction, effectively lift the progressive molding quality of macromolecule sheet material.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of without departing from the technology of the present invention principle, some improvement and deformation can also be made, these improve and deform
Also should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of progressive forming method of macromolecule sheet material supported based on metal backing, is characterized in that, comprise the steps：
1) according to macromolecule part shape, its shaping principal direction is determined；
2) according to step 1) in part forming principal direction, find out the maximum forming angle of part
3) metal supporting back board is selected according to macromolecule part material and thickness；
4) the progressive molding limiting angle θ of metal supporting back board is determinedmax, and cause
5) the metal supporting back board for choosing is placed in into macromolecule sheet material lower section, and is fixed at two ends using clamp device；
6) according to part C AD model, the progressive molding processing numerical control code of macromolecule part is generated；
7) the input processing numerical control code in lathe, completes part processing.
2. it is according to claim 1 it is a kind of based on metal backing support the progressive forming method of macromolecule sheet material, its feature
Be, the step 2) in forming angleFor Working position method arrow and the angle of Z axis.
3. it is according to claim 1 it is a kind of based on metal backing support the progressive forming method of macromolecule sheet material, its feature
It is, the step 3) in, supporting back board material selects aluminium sheet or copper coin；The thickness of supporting back board takes the 1/ of macromolecule sheet metal thickness
3-1/2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510482596.8A CN105058796B (en) | 2015-08-07 | 2015-08-07 | High polymer board incremental forming method based on metal backboard supporting |
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| CN201510482596.8A CN105058796B (en) | 2015-08-07 | 2015-08-07 | High polymer board incremental forming method based on metal backboard supporting |
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| CN105058796A CN105058796A (en) | 2015-11-18 |
| CN105058796B true CN105058796B (en) | 2017-04-19 |
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| US11179869B2 (en) | 2016-12-29 | 2021-11-23 | Ford Global Technologies, Llc | Method and apparatus for incrementally forming prototype parts with a heated stylus |
| CN106825212B (en) * | 2017-02-15 | 2018-07-20 | 青岛理工大学 | A kind of judgment method of multidirectional paddle type mill progressive molding plate rupture |
| CN109968643B (en) * | 2019-03-28 | 2021-12-07 | 厦门大学嘉庚学院 | Numerical control three-D thermoforming method for plastic sheet |
| CN110369853B (en) * | 2019-07-26 | 2021-07-20 | 上海交通大学 | Laminated plate double-point synchronous connection and progressive composite forming device and method |
| CN110465584B (en) * | 2019-08-05 | 2020-11-10 | 南京工程学院 | Progressive forming limit test method for mesh plate |
| CN110815846B (en) * | 2019-11-22 | 2021-10-15 | 上海交通大学 | Progressive forming device and method for thermoplastic resin-based braided composite material |
| CN112588976A (en) * | 2020-10-29 | 2021-04-02 | 浙江合众新能源汽车有限公司 | Plate incremental forming method |
| CN112528424A (en) * | 2020-11-03 | 2021-03-19 | 南京工程学院 | Method for improving incremental forming performance of plate |
| CN112659562B (en) * | 2020-12-23 | 2022-10-21 | 上海交通大学 | Method for flexibly connecting polymer plate and foam metal dissimilar material through thermal radiation |
| CN113042618A (en) * | 2021-03-15 | 2021-06-29 | 武汉理工大学 | Incremental forming method for large-scale component |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103341943B (en) * | 2013-06-10 | 2015-09-23 | 青岛理工大学 | Plastics plate high-pressure hot wind progressive molding device and manufacturing process thereof |
| CN103861927B (en) * | 2014-03-18 | 2016-01-20 | 哈尔滨工业大学 | A kind of sheet material multiple spot punch liquid filling deep-drawing forming device and method |
| CN104138946A (en) * | 2014-06-27 | 2014-11-12 | 中国商用飞机有限责任公司 | Auxiliary padding bending and forming method for variable thickness thin-walled member |
| CN104607523B (en) * | 2015-02-13 | 2017-03-15 | 上海交通大学 | A kind of plate stirs progressive compound molding device and method |
| CN104690138B (en) * | 2015-02-28 | 2017-01-18 | 山东科技大学 | Magnesium alloy plate ultrasonic vibration single-point incremental forming device and incremental forming method thereof |
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