CN106862375B - Progressive forming method using mixed processing tracks - Google Patents
Progressive forming method using mixed processing tracks Download PDFInfo
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- CN106862375B CN106862375B CN201710082019.9A CN201710082019A CN106862375B CN 106862375 B CN106862375 B CN 106862375B CN 201710082019 A CN201710082019 A CN 201710082019A CN 106862375 B CN106862375 B CN 106862375B
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- Prior art keywords
- track
- progressive molding
- forming
- progressive
- product
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- 230000000750 progressive effect Effects 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000008569 process Effects 0.000 claims abstract description 27
- 238000000465 moulding Methods 0.000 claims description 58
- 238000003754 machining Methods 0.000 claims description 19
- 238000005516 engineering process Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- 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
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Numerical Control (AREA)
Abstract
The invention discloses a progressive forming method by using mixed processing tracks, which is used for solving the problem that the efficiency and the quality can not be repeated in the single progressive forming processing process and mainly comprises the steps of (1) establishing a three-dimensional geometric model of a product and generating a continuous contact progressive forming processing track, (2) setting the forming limit angle of the adopted plate to be α, changing the tool path of a part with the inclination angle of the upper side wall of the product larger than α -n degrees into a fluctuating track and then generating a hammering type progressive forming track for ensuring the processing safety, (3) taking the connecting line of the tool track points of two adjacent wave troughs as a rotating shaft, rotating the track point between the two wave troughs by a certain angle around the rotating shaft, (4) outputting the fluctuating processing track formed in a multidirectional hammering type progressive manner in a format recognizable by a numerical control machine or a special progressive forming machine, and (5) carrying out the progressive forming of the mixed processing track by using a forming tool according to the processing track in the step (4).
Description
Technical field
The present invention relates to sheet fabrication correlative technology field, more particularly to it is a kind of using hybrid process track it is progressive into
Shape method.
Background technology
In plate progressive molding technology, it is not necessary to which mould only needs part mould, it is only necessary to which forming tool presses numerical control knife rail
Mark advances, and pushes i.e. formable arbitrary shape product point by point to plate, suitable for the trial-production of shelly-shaped part, personalized customization and small
Batch production, thus widely paid close attention to and studied.
During progressive molding, if instrument and plate remain contact, continuous contact progressive molding can be described as.
If in forming process, instrument is constantly lifted and fallen while being moved along machining locus, periodically connect with plate
Touch, then referred to as paddle type mill progressive molding.
For progressive molding performance perspective, during paddle type mill progressive molding, because can be by constantly adjusting hammer
Direction and hammer force degree are hit to control the deformation of plate part, so as to control the thickness of product part.
And the forming efficiency higher of continuous contact progressive molding, but since edge is not present in no hammering process, plate
The local deformation in direction is hammered, and because the forming tool usually selected is mostly bulb instrument, instrument Axial changes will not be to plate
The problem of expecting that deformation has an impact, thus can not effectively overcoming existing progressive molding thickness of slab mainly to be determined by forming angle.
In the prior art, there are correlative study of the part on progressive forming direction.For example, Application No.
2012103390058 Chinese patent literature provides a kind of method that plate presses progressive molding taper type part, shapes work
Tool head formation of parts to the point-by-point top pressure of plate, after being acted by a top pressure, the plate around forming tool head produces plate
Local deformation, primary deformable direction is identical with forming tool head top pressure direction, and the deformation in this direction is formation of parts needs；
Local deformation further includes the deformation along part circumferential direction at the same time, and circumferential deformation is reverse in forming tool both sides equivalent, this deformation
It is that part forming is unwanted, but due to producing the reverse deformation of equivalent at the same time, and between adjacent local modified areas
Circumferential deformation can mutually suppress, and will not be superimposed to same direction, the part after shaping would not produce circumferential torsional deformation.
In the program, by carrying out gradual top pressure to part, realize final processing purpose, but its essence be still paddle type mill it is progressive into
Shape.
From two kinds of progressive molding technique of processing efficiency angle contrast when, paddle type mill progressive molding is substantially grown due to machining locus
In continuous contact progressive molding, therefore processing efficiency substantially reduces.But in the process of product, if all using company
Then, often there is the problem of precipitous part of workpiece is difficult to once successfully shape in continued access touch progressive molding；If all using paddle type mill
Progressive molding, then the processing efficiency of whole product is substantially beneath.
In conclusion in the prior art for how to realize the problem of plate high-effect high-quality is processed, still lacking has
The solution of effect.
The content of the invention
It can not be taken into account to solve quality present in progressive molding process existing in the prior art and efficiency
Deficiency, the present invention provides a kind of progressive molding method using hybrid process track.The present invention make full use of two kinds it is progressive into
The advantages of shape technique, achieve the purpose that the forming property and processing efficiency for taking into account plate, additionally it is possible to promote progressive molding technology to obtain
To being more widely applied.
The present invention adopts the following technical scheme that：
One kind uses hybrid process track progressive molding method, comprises the following steps：
(1) product 3-D geometric model is established, and generates continuous contact progressive molding machining locus；
(2) the forming limit angle of used plate is set as α, and to ensure process safety, product upper side wall inclination angle is more than α-n
Part tool path be changed into fluctuate track；
It is perpendicular to be directed upwardly into sine by the machining locus for fluctuating track regions to meet that the discrete point of certain forming accuracy exports
Fluctuation, generation paddle type mill progressive molding track；
(3) it is more than the actual inclination angle of part and the forming property of used plate of α-n at side wall inclination angle according to product,
Using the tool path point line of two neighboring trough as shaft, the tracing point between two troughs is rotated into certain angle around the shaft
Degree；
(4) fluctuation of multidirectional paddle type mill progressive molding is exported with numerically-controlled machine tool or the identifiable form of special progressive molding machine
Machining locus；
(5) machining locus of the forming tool as described in step (4) carries out the progressive molding of hybrid process track.
In above-mentioned method, it is preferred that in step (1), carry out establishing product three-dimensional using three-dimensional CAD/CAM softwares several
What model.
In above-mentioned method, it is preferred that in step (2), the hammering angle of paddle type mill progressive molding track is 90 °.
In above-mentioned method, it is preferred that in step (2), the value range of n is 5 ° -20 °.
In above-mentioned method, it is preferred that in step (2), n is 10 °.
In above-mentioned method, it is preferred that before progress step (5), it is ensured that the geometric center of product and the combination of fixture
Center overlaps.
In the prior art, the continuous contact progressive molding technology of generally use, it is difficult to overcome the forming limit angle of plate
Limitation.It is local precipitous when occurring in product, i.e., forming angle big position when, plate easily produces brokenly because local thickness is excessively thin
Split.
Common solution method is the progressive molding using multi-pass, by repeatedly " from the top bottom of to " and " bottom of to pushing up " come
Successive adjustment thickness of slab.But multi-pass progressive molding is added significantly to curring time, and pilot process is difficult to rationally control.
The limitation at forming limit angle can be broken through using multidirectional paddle type mill progressive molding, single pass can shaped side walls inclination angle
Big region, but there are total elapsed time it is long the shortcomings that.
The beneficial effects of the present invention are：
Using hybrid process track progressive molding method, multidirectional paddle type mill progressive molding is used at the precipitous place of product,
Remaining shallower region has used continuous paddle type mill progressive molding common, has reached the forming property for taking into account plate and processing is imitated
The purpose of rate.
Since heretofore described multidirectional hammering progressive molding is the method by numerical control programming, it is by the establishment of cutter track track
The multidirectional hammering action of implementation tool is carried out in fluctuation track, therefore can smoothly be connected with common contact progressive molding, is not required to
Want extra process and equipment, it is only necessary to can be achieved on Milling Motion in Three-axes NC and special progressive molding machine, easy to implement, plate
Forming property it is good, forming efficiency is high, helps to promote progressive molding technology to be more widely applied.
Brief description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are used to explain the application, do not form the improper restriction to the application.
Fig. 1 is the schematic diagram of the machining locus product process of hybrid process track progressive molding method.
Embodiment
It is noted that described further below is all illustrative, it is intended to provides further instruction to the application.It is unless another
Indicate, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Embodiment 1：As background technology is introduced, it is precipitous that continuous contact machine-shaping workpiece exists in the prior art
Part is difficult to, and the deficiency of the progressive processing and forming inefficiency of paddle type mill, in order to solve technical problem as above, the application carries
A kind of progressive molding method using hybrid process track is gone out.In the case where combining specific software and material specification, it is led
Process is wanted to include：
(1) three-dimensional CAD model of varied angle circular cone cup is established with UGNX8.0, cone cup busbar is circular arc line, and radius is
100m, cone cup opening size are 100mm, and the excursion of angle is 20 °~90 °.With processing module, continuous contact is generated gradually
Into the machining locus of shaping；
(2) the implementation region of two kinds of progressive molding machining locus is determined.Due to the sheet thickness employed in the present embodiment
For 1060 plate of commercial-purity aluminium of 1mm, its forming limit angle is 70 ° or so, therefore opening portion, and side wall inclination angle is 20 °~60 °
Part, still using continuous contact progressive molding, be not required to be changed into the tool processes track of fluctuation.And side wall inclination angle is 60 °
~90 ° of bottom section, then using multidirectional paddle type mill progressive molding, the machining locus for needing transformation tool is fluctuation track；
(3) machining locus of multidirectional paddle type mill progressive molding part is generated.By the machining locus of bottom section with 0.02mm
Forming accuracy discrete point output.The number of tracing point should be met as 24 by setting each wavelength, linear by Lagrange
Interpolation method clicks through row interpolation to foregoing discrete machining locus, obtains new machining locus point；
In the vertical direction, introduces sinusoidal fluctuation, and it is 0.5mm to select sinusoidal wavelength X, amplitude A 0.5mm, the water of instrument
Flat feed speed v is 300mm/min.The paddle type mill progressive molding track that generation hammering angle is 90 °.With the work of two neighboring trough
It is shaft to have tracing point line, the tracing point between two troughs is rotated 45 ° around the shaft, and generate new cutter track track；
(4) with numerically-controlled machine tool or the fluctuation machining locus of the identifiable form output progressive molding of special progressive molding machine；
(5) use thickness that plate is cutting into 240 × 240mm, makes the geometry of plate for 1060 plate of commercial-purity aluminium of 1mm
Center is overlapped with the geometric center of forming jig, pushes down plate surrounding 15mm clampings；
Machining tool carries out point-by-point progressive molding under the control of lathe according to the fluctuation track data of step (4) generation.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications to embodiment will be apparent for those skilled in the art, as defined herein general
Principle can be realized in other embodiments without departing from the spirit or scope of the present invention, is not described in detail
The part presented with partial enlargement, is the prior art, herein without repeating.Therefore, the present invention is not intended to be limited to herein
These shown embodiments, and it is to fit to the most wide scope consistent with principles disclosed herein and feature.
Claims (6)
1. one kind uses hybrid process track progressive molding method, it is characterised in that comprises the following steps：
(1) product 3-D geometric model is established, and generates continuous contact progressive molding machining locus；
(2) the forming limit angle of used plate is set as α, and to ensure process safety, product upper side wall inclination angle is more than to the portion of α-n
The tool path divided is changed into fluctuating track；
It is perpendicular to be directed upwardly into sine wave by the machining locus for fluctuating track regions to meet that the discrete point of certain forming accuracy exports
It is dynamic, generation paddle type mill progressive molding track；
(3) it is more than the actual inclination angle of part and the forming property of used plate of α-n at side wall inclination angle according to product, with phase
The tool path point line of adjacent two troughs is shaft, and the tracing point between two troughs is rotated by a certain angle around the shaft；
(4) fluctuation that multidirectional paddle type mill progressive molding is exported with numerically-controlled machine tool or the identifiable form of special progressive molding machine is processed
Track；
(5) machining locus of the forming tool as described in step (4) carries out the progressive molding of hybrid process track.
2. according to claim 1 use hybrid process track progressive molding method, it is characterised in that in step (1), adopts
Carry out establishing product 3-D geometric model with three-dimensional CAD/CAM softwares.
3. according to claim 1 use hybrid process track progressive molding method, it is characterised in that in step (2), hammer
The hammering angle for hitting formula progressive molding track is 90 °.
4. according to claim 1 use hybrid process track progressive molding method, it is characterised in that in step (2), n
Value range be 5 ° -20 °.
5. according to claim 1 use hybrid process track progressive molding method, it is characterised in that in step (2), n
For 10 °.
6. according to claim 1 use hybrid process track progressive molding method, it is characterised in that carries out step (5)
Before, it is ensured that the geometric center of product and the combination center of fixture overlap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082019.9A CN106862375B (en) | 2017-02-15 | 2017-02-15 | Progressive forming method using mixed processing tracks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082019.9A CN106862375B (en) | 2017-02-15 | 2017-02-15 | Progressive forming method using mixed processing tracks |
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| Publication Number | Publication Date |
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| CN106862375A CN106862375A (en) | 2017-06-20 |
| CN106862375B true CN106862375B (en) | 2018-05-01 |
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| CN201710082019.9A Expired - Fee Related CN106862375B (en) | 2017-02-15 | 2017-02-15 | Progressive forming method using mixed processing tracks |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857342B (en) * | 2021-09-08 | 2023-05-12 | 上海交通大学 | Method for improving friction stir incremental forming performance of thin-wall forming part |
| CN114211000A (en) * | 2021-12-16 | 2022-03-22 | 上海工程技术大学 | Selective laser melting method for reducing alloy surface cracks |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4209233B2 (en) * | 2003-03-28 | 2009-01-14 | 株式会社日立製作所 | Sequential molding machine |
| US7984635B2 (en) * | 2005-04-22 | 2011-07-26 | K.U. Leuven Research & Development | Asymmetric incremental sheet forming system |
| CN101947597B (en) * | 2010-07-26 | 2013-03-13 | 浙江工业大学 | Gradual die-less forming method |
| CN102554007B (en) * | 2012-02-09 | 2015-09-09 | 上海交通大学 | The progressive compound molding device of a kind of sheet metal deep drawing |
| JP5696682B2 (en) * | 2012-04-05 | 2015-04-08 | トヨタ自動車株式会社 | Metal plate forming method |
| CN103071726A (en) * | 2013-02-07 | 2013-05-01 | 江西理工大学 | Single-point longitudinal vibration controllable progressive forming system for metal plate |
| DE102013019397B4 (en) * | 2013-11-18 | 2018-05-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | forming mandrel |
| CN104384310B (en) * | 2014-09-24 | 2016-04-27 | 安徽工业大学 | A kind of plate progressive molding method with sub-mount |
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Granted publication date: 20180501 Termination date: 20190215 |