CN107838283A - Multiple spot yaw press forming method for three-dimensional curve generation of sheet - Google Patents
Multiple spot yaw press forming method for three-dimensional curve generation of sheet Download PDFInfo
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- CN107838283A CN107838283A CN201711122103.5A CN201711122103A CN107838283A CN 107838283 A CN107838283 A CN 107838283A CN 201711122103 A CN201711122103 A CN 201711122103A CN 107838283 A CN107838283 A CN 107838283A
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- Prior art keywords
- yaw
- plate
- shape
- forming
- multiple spot
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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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/005—Incremental shaping or bending, e.g. stepwise moving a shaping tool along the surface of the workpiece
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Abstract
The present invention relates to a kind of multiple spot yaw press forming method for three-dimensional curve generation of sheet, belong to mechanical engineering field.Multiple spot reconfigurable die type face is converted in forming process incessantly, making metal blank, progressively progressive forming is curved surface；The multiple spot reconstruct mould is made up of discretization, adjustable for height regularly arranged yaw；Based on multi-point press, the pendular body of yaw can realize that self-coordinating constrains plate so that sheet forming with the deformation of plate in forming process.Advantage is：Always it is under the constraint of basic body, is more uniformly stressed in the absence of the hanging state of plate, plate in shaping, efficiency prevents the generation of defect.Pendular body is fully bonded with plate, and forming face continuity increase, plate stress is more uniformly distributed, steadily, and local deformation amount reduces, and surface quality significantly improves.Dislocation between upper and lower basic body active force reduces, and local buckling effect weakens, and forming accuracy significantly improves.
Description
Technical field
The present invention relates to mechanical engineering field, more particularly to a kind of multiple spot yaw press for three-dimensional curve generation of sheet
Manufacturing process.
Background technology
As modern product is to variation and the fast development in small lot direction, the traditional moulds design cycle is long, is manufactured into
The shortcomings of this height, debugging difficulty are big, poor universality increasingly highlights, and based on this, multi-point forming arises at the historic moment.Its basic ideas is will
Traditional unitary mould is separated into series of rules arrangement, adjustable for height basic body drift, using the enveloping surface of drift as shaping
Face, the three-dimensional of sheet material is realized under computer system control.Compared to unitary mould, multi-spot forming equipment, which has, adjusts shape side
Just the advantages that, versatile, substantial amounts of time, manpower and material cost can be saved.By the development of twenties years, the technology was
Through Successful utilization in multiple fields such as aircraft skin, bullet train head, ship hull plate, sculpture for city, medical engineerings.But multiple spot
The defects of uneven stress distribution, corrugation and local curvature effect be present in shaping.
The content of the invention
It is an object of the invention to provide a kind of multiple spot yaw press forming method for three-dimensional curve generation of sheet, solution
The stress distribution during three-dimensional curve generation of sheet existing for prior art of having determined is uneven, corrugation and local curvature effect etc. are asked
Topic.The present invention realizes three-dimensional curve generation of sheet technological innovation, promotes Aeronautics and Astronautics, national defence, ship, automobile, medical treatment etc.
The fast development of multiple fields.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：
Converting multiple spot incessantly for the multiple spot yaw press forming method of three-dimensional curve generation of sheet, in forming process can weigh
Structure die face, making metal blank, progressively progressive forming is curved surface；The multiple spot reconstruct mould is by discretization, height adjustable
Regularly arranged yaw composition；Based on multi-point press, the pendular body of yaw can be with plate in forming process
Deformation realizes that self-coordinating constrains plate so that sheet forming；Comprise the following steps that：
Step 1：By upper and lower yaw group 5,6 leveling, at the same time, the pendular body 1 of yaw keeps leveling state；Plate 7 is placed in
Among upper and lower yaw group 5,6, upper and lower yaw group 5,6 spacing are adjusted, upper and lower yaw group 5,6 is clamped plate 7；
Step 2：Yaw position is adjusted according to target shape, wherein yaw can actively adjust shape according to target shape, swing simultaneously
Body 1 adaptively rotates in the presence of plate 7, until being bonded completely with plate 7；Shape, constant speed are adjusted when regulative mode can be divided into etc.
Shape, iso-curvature or iso-curvature radius is adjusted to adjust three kinds of tune shape forms of shape；Deng when adjust shape in, all yaws shape start when same luck
It is dynamic, stop simultaneously at the end of shaping；Etc. in velocity modulation shape, yaw starts simultaneously at motion with identical speed, but asynchronously stops；Deng song
Rate is adjusted in shape, and each yaw carries out tune shape in the way of shape same curvature is adjusted in the unit interval；And in the process plate with
Yaw is bonded completely all the time；
Step 3：Yaw is adjusted to final specified location, completes deformation；
Step 4：Yaw group 5 or lower yaw group 6 is moved down in up-regulation, start to unload, until plate 7 can be taken out；Wherein pendular body 1
Recover in the presence of helical spring 2 to horizontality.
Described yaw is made up of pendular body 1, helical spring 2, spinning ball 3, bearing 4, and the pendular body 1 passes through spiral
Spring 2 is connected with bearing 4, and the diameter of pendular body 1 is less than bearing 4, and under external force, pendular body 1 is around being fixed on bearing 4
Spinning ball 3 rotates.
Described yaw keeps contacting with plate all the time, forms the instantaneous forming face that changes at any time, clamping plate carry out into
Shape；This forming mode is cumulative equivalent to the multi-step forming that shaping curvature is close many times, it is thus possible to realizes plate
Optimal deformation path.
Described pendular body 1 arranges according to pressure, i.e., yaw is coaxially and non-to pressure row up and down, i.e., yaw is not coaxial up and down
Two kinds of arrangement modes；It is wherein non-that pressure row are included with positive arrangement, T-shaped arrangement and three kinds of modes of diamond array.
Described is non-to pressure row, and upper and lower yaw is not coaxial, and the thickness of plate regional area is relatively reduced to deformation, makees simultaneously
Swing volume density for plate is multiplied, and sheet metal deformation is more uniformly distributed, and forming quality also accordingly improves.
The beneficial effects of the present invention are：
1st, multi-point press method is compared with traditional multi-point forming method, in shaping in the absence of the hanging state of plate,
Plate is always under the constraint of basic body, is more uniformly stressed, and efficiency prevents the generation of defect.
2nd, swinging the adaptive rotation of drift realizes fully being bonded for pendular body and plate, the increase of forming face continuity,
Plate stress is more uniformly distributed, steadily, and local deformation amount reduces, and surface quality significantly improves.
3rd, the adaptive rotation for swinging drift causes the dislocation between upper and lower basic body active force to reduce, and local buckling effect subtracts
Weak, forming accuracy significantly improves.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright illustrative example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.
Fig. 1 is the schematic diagram of the yaw of the present invention；
The yaw group that Fig. 2 is the present invention shapes beginning schematic diagram；
The yaw group that Fig. 3 is the present invention shapes beginning detailed schematic；
Fig. 4 is yaw group's forming process schematic diagram of the present invention；
Fig. 5 is yaw group's forming process detailed schematic of the present invention；
The yaw group that Fig. 6 is the present invention shapes end schematic diagram；
The yaw group that Fig. 7 is the present invention shapes end detailed schematic；
The yaw group that Fig. 8 is the present invention unloads schematic diagram；
The yaw group that Fig. 9 is the present invention unloads detailed schematic；
Figure 10 is the positive arrangement mode schematic diagram of the present invention；
Figure 11 is the T-shaped arrangement mode schematic diagram of the present invention；
Figure 12 is the diamond array schematic diagram of the present invention.
In figure：1st, pendular body；2nd, helical spring；3rd, spinning ball；4th, bearing；5th, upper yaw group；6th, lower yaw group；7th, plate
Material；8th, lower yaw center；9th, pendular body profile；10th, yaw profile；11st, upper yaw center.
Embodiment
The detailed content and its embodiment of the present invention is further illustrated below in conjunction with the accompanying drawings.
Referring to shown in Fig. 1 to Figure 12, the multiple spot yaw press forming method for three-dimensional curve generation of sheet of the invention,
Multiple spot reconfigurable die type face is converted in forming process incessantly, making metal blank, progressively progressive forming is curved surface；It is described
Multiple spot reconstruct mould is by discretization, adjustable for height regularly arranged yaw（Swing drift）Composition；With traditional multiple spot press
Based on shaping, the pendular body of yaw can realize that self-coordinating constrains plate so that plate with the deformation of plate in forming process
Shaping；Comprise the following steps that：
Step 1：By upper and lower yaw group 5,6 leveling, at the same time, the pendular body 1 of yaw keeps leveling state；Plate 7 is placed in
Among upper and lower yaw group 5,6, upper and lower yaw group 5,6 spacing are adjusted, upper and lower yaw group 5,6 is clamped plate 7；
Step 2：Yaw position is adjusted according to target shape, wherein yaw can actively adjust shape according to target shape, swing simultaneously
Body 1 adaptively rotates in the presence of plate 7, until being bonded completely with plate 7；Shape, constant speed are adjusted when regulative mode can be divided into etc.
Shape, iso-curvature or iso-curvature radius is adjusted to adjust three kinds of tune shape forms of shape；Deng when adjust shape in, all yaws shape start when same luck
It is dynamic, stop simultaneously at the end of shaping；Etc. in velocity modulation shape, yaw starts simultaneously at motion with identical speed, but asynchronously stops；Deng song
Rate is adjusted in shape, and each yaw carries out tune shape in the way of shape same curvature is adjusted in the unit interval；And in the process plate with
Yaw is bonded completely all the time；
Step 3：Yaw is adjusted to final specified location, completes deformation；
Step 4：Yaw group 5 or lower yaw group 6 is moved down in up-regulation, start to unload, until plate 7 can be taken out；Wherein pendular body 1
Recover in the presence of helical spring 2 to horizontality.
Described yaw is made up of pendular body 1, helical spring 2, spinning ball 3, bearing 4, and the pendular body 1 passes through spiral
Spring 2 is connected with bearing 4, and the diameter of pendular body 1 is less than bearing 4, and under external force, pendular body 1 is around being fixed on bearing 4
Spinning ball 3 rotates.
Described yaw keeps contacting with plate all the time, forms the instantaneous forming face that changes at any time, clamping plate carry out into
Shape；This forming mode is cumulative equivalent to the multi-step forming that shaping curvature is close many times, it is thus possible to realizes plate
Optimal deformation path.
Described pendular body 1 arranges according to pressure, i.e., yaw is coaxial up and down（Namely descend yaw center and upper yaw center
Overlap）Pressure is arranged with non-, i.e. the not coaxial two kinds of arrangement modes of upper and lower yaw；It is wherein non-that pressure row are included with positive arrangement, T-shaped row
Row and three kinds of modes of diamond array.
Described is non-to pressure row, and upper and lower yaw is not coaxial, and the thickness of plate regional area is relatively reduced to deformation, makees simultaneously
Swing volume density for plate is multiplied, and sheet metal deformation is more uniformly distributed, and forming quality also accordingly improves.
Embodiment：
The multiple spot yaw press forming method based on multiple spot reconfigurable die of the invention, in each yaw forming process incessantly
Multiple spot reconfigurable die type face is converted, making metal blank 7, progressively progressive forming is curved surface.Wherein multiple spot reconstruct mould be by from
Dispersion, adjustable for height regularly arranged yaw composition.
Shown in Figure 1, yaw includes pendular body 1, helical spring 2, spinning ball 3 and bearing 4, under external force,
Pendular body 1 can rotate within the specific limits around the spinning ball 3 for being fixed on bearing 4.In order to avoid the interference between pendular body 1,
Make to leave surplus between adjacent pendular body 1, i.e. the diameter of pendular body 1 is less than bearing 4.Due to the adaptive swing of yaw, it can be real
Now fully it is bonded with plate 7, eliminates scraping risk.Compared with traditional multi-point press method, drift is pendular body 1
Significantly increased with the contact area of plate 7, change the stress for fixing the contact of drift small area face in the prior art, plate
The constrained increase of the institute of material 7, is more uniformly stressed, its forming quality also significantly improves.
Referring to shown in Fig. 2 and Fig. 3, by upper yaw group 5 and the lower leveling of yaw group 6, at the same time, pendular body 1 keeps leveling
State.Plate 7 is placed among upper yaw group 5 and lower yaw group 6, yaw group 5 and the lower spacing of yaw group 6, make pendulum in regulation
Head group 5 and lower yaw group 6 clamp plate 7.
Referring to shown in Fig. 4 and Fig. 5, the position of yaw is adjusted according to target shape, wherein yaw can be according to target shape
Shape is actively adjusted, while pendular body 1 adaptively rotates in the presence of plate 7, until being bonded completely with plate 7.Regulative mode can
Adjusted when being divided into etc. shape, etc. velocity modulation shape and iso-curvature（Or iso-curvature radius）Adjust three kinds of tune shape forms of shape.Deng when adjust shape in, all pendulum
Head moves simultaneously when shaping and starting, and stops simultaneously at the end of shaping；Etc. in velocity modulation shape, yaw starts simultaneously at fortune with identical speed
It is dynamic, but asynchronously stop；Iso-curvature is adjusted in shape, and each yaw carries out tune shape in the way of shape same curvature is adjusted in the unit interval.
And plate 7 is bonded completely all the time with yaw in the process.
Referring to shown in Fig. 6 and Fig. 7, yaw is adjusted to final specified location, completes deformation.
Yaw group 5 or lower yaw group 6 is moved down referring to shown in Fig. 8 and Fig. 9, in up-regulation, start to unload, until can be with withdrawing plate
Material 7.Wherein pendular body 1 can recover to horizontality in the presence of the helical spring 2 of bearing 4 is connected to.
Referring to shown in Figure 10 to Figure 12, positive arrangement mode of the invention is：Lower yaw center 8 is arranged in the form of cubic, on
Yaw center 11 is positioned at the center at four lower yaw centers 8.
T-shaped arrangement mode is：Lower yaw center 8 is arranged in the manner of a t-shape, and each pendular body profile 9 is tangent, and yaw profile 10 is tight
Contiguity is touched, and upper yaw center 11 is positioned at the T-shaped center at three lower yaw centers 8.
Diamond array mode is：Four lower yaw centers 8 are arranged in the form of rhombus, and upper yaw center 11 is located at four bottoms
The rhombus center at head center 8.Non- in pressing formation, upper and lower yaw is not coaxial, the thick of the regional area of plate 7 subtracts to deformation is relative
It is small, while the yaw density for acting on plate 7 is multiplied, the deformation of plate 7 is more uniformly distributed, and forming quality is relatively to pressure row side
Formula also accordingly improves.
The present invention can solve the problem that the uneven stress distribution during three-dimensional curve generation of sheet, corrugation and local curvature effect
The defects of.Multiple spot yaw press forming is a kind of based on traditional multi-point press, and fixed drift is replaced with drift is swung
Method.The three-dimensional curve generation method of plate of the present invention, including convert multiple spot in forming process incessantly and can weigh
Structure die face, the step of making metal blank progressively progressive forming is curved surface.The yaw can be realized abundant with plate
Fitting, plate are more uniformly stressed stabilization, have more preferable forming property.
The preferred embodiment of the present invention is the foregoing is only, is not intended to limit the invention, for the technology of this area
For personnel, the present invention can have various modifications and variations.All any modification, equivalent substitution and improvements made for the present invention etc.,
It should be included in the scope of the protection.
Claims (5)
- A kind of 1. multiple spot yaw press forming method for three-dimensional curve generation of sheet, it is characterised in that：In forming process not Multiple spot reconfigurable die type face is discontinuously converted, making metal blank, progressively progressive forming is curved surface；The multiple spot reconstructs mould It is made up of discretization, adjustable for height regularly arranged yaw；Based on multi-point press, the yaw in forming process Pendular body can be realized with the deformation of plate self-coordinating constrain plate so that sheet forming；Comprise the following steps that：Step 1：By upper and lower yaw group（5、6）Leveling, at the same time, the pendular body of yaw（1）Keep leveling state；By plate （7）It is placed in upper and lower yaw group（5、6）Centre, adjust upper and lower yaw group（5、6）Spacing, make upper and lower yaw group（5、6）Clamp Plate（7）；Step 2：Yaw position is adjusted according to target shape, wherein yaw can actively adjust shape according to target shape, swing simultaneously Body（1）In plate（7）In the presence of adaptively rotate, until and plate（7）Fitting completely；Regulative mode is adjusted when can be divided into etc. Shape, etc. velocity modulation shape, iso-curvature or iso-curvature radius adjust three kinds of tune shape forms of shape；Deng when adjust shape in, all yaws start in shaping When move simultaneously, stop simultaneously at the end of shaping；Etc. in velocity modulation shape, yaw starts simultaneously at motion with identical speed, but it is different when Stop；Iso-curvature is adjusted in shape, and each yaw carries out tune shape in the way of shape same curvature is adjusted in the unit interval；And in this process Middle plate is bonded completely all the time with yaw；Step 3：Yaw is adjusted to final specified location, completes deformation；Step 4：Yaw group in up-regulation（5）Or move down lower yaw group（6）, start to unload, until plate can be taken out（7）；Wherein Pendular body（1）In helical spring（2）In the presence of recover to horizontality.
- 2. the multiple spot yaw press forming method according to claim 1 for three-dimensional curve generation of sheet, its feature exists In：Described yaw is by pendular body（1）, helical spring（2）, spinning ball（3）, bearing（4）Composition, the pendular body（1）It is logical Cross helical spring（2）With bearing（4）Connection, the pendular body（1）Diameter is less than bearing（4）, under external force, pendular body （1）Around being fixed on bearing（4）Spinning ball（3）Rotate.
- 3. the multiple spot yaw press forming method according to claim 1 for three-dimensional curve generation of sheet, its feature exists In：Described yaw keeps contacting with plate all the time, forms the instantaneous forming face changed at any time, and clamping plate is formed；This Kind forming mode is cumulative equivalent to the multi-step forming that shaping curvature is close many times, it is thus possible to realizes the optimal of plate Deformation path.
- 4. the multiple spot yaw press forming method according to claim 1 for three-dimensional curve generation of sheet, its feature exists In：Described pendular body（1）Arranged according to pressure, i.e., up and down yaw coaxially and it is non-to pressure arrange, i.e., above and below yaw not coaxial two Kind arrangement mode；It is wherein non-that pressure row are included with positive arrangement, T-shaped arrangement and three kinds of modes of diamond array.
- 5. the multiple spot yaw press forming method according to claim 1 for three-dimensional curve generation of sheet, its feature exists In：Described is non-to pressure row, and upper and lower yaw is not coaxial, and the thickness of plate regional area is relatively reduced to deformation, acts on simultaneously The swing volume density of plate is multiplied, and sheet metal deformation is more uniformly distributed, and forming quality also accordingly improves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711122103.5A CN107838283A (en) | 2017-11-14 | 2017-11-14 | Multiple spot yaw press forming method for three-dimensional curve generation of sheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711122103.5A CN107838283A (en) | 2017-11-14 | 2017-11-14 | Multiple spot yaw press forming method for three-dimensional curve generation of sheet |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108284153A (en) * | 2018-03-28 | 2018-07-17 | 吉林大学 | The adaptive tool heads of multiple spot integrated form for rotating progressive molding and manufacturing process |
| CN109092978A (en) * | 2018-07-20 | 2018-12-28 | 太原科技大学 | One kind is based on the formed in mould bent bus helical blade forming method of multiple spot |
| CN111069417A (en) * | 2019-11-22 | 2020-04-28 | 大连海事大学 | Method for controlling forming resilience of panel |
| CN113926893A (en) * | 2021-09-27 | 2022-01-14 | 渤海造船厂集团有限公司 | Small-curvature-radius hyperbolic outer plate stamping forming device and method |
| CN114309276A (en) * | 2021-12-31 | 2022-04-12 | 吉林大学 | Forming unit for numerical control quick reconfigurable molded surface die |
| CN116153848A (en) * | 2023-04-23 | 2023-05-23 | 无锡邑文电子科技有限公司 | Lifting mechanism and semiconductor device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108284153A (en) * | 2018-03-28 | 2018-07-17 | 吉林大学 | The adaptive tool heads of multiple spot integrated form for rotating progressive molding and manufacturing process |
| CN109092978A (en) * | 2018-07-20 | 2018-12-28 | 太原科技大学 | One kind is based on the formed in mould bent bus helical blade forming method of multiple spot |
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| CN111069417A (en) * | 2019-11-22 | 2020-04-28 | 大连海事大学 | Method for controlling forming resilience of panel |
| CN113926893A (en) * | 2021-09-27 | 2022-01-14 | 渤海造船厂集团有限公司 | Small-curvature-radius hyperbolic outer plate stamping forming device and method |
| CN114309276A (en) * | 2021-12-31 | 2022-04-12 | 吉林大学 | Forming unit for numerical control quick reconfigurable molded surface die |
| CN116153848A (en) * | 2023-04-23 | 2023-05-23 | 无锡邑文电子科技有限公司 | Lifting mechanism and semiconductor device |
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Application publication date: 20180327 |