CN102489651B - Electro-plastic open die forging device and method - Google Patents
Electro-plastic open die forging device and method Download PDFInfo
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- CN102489651B CN102489651B CN201110391820.4A CN201110391820A CN102489651B CN 102489651 B CN102489651 B CN 102489651B CN 201110391820 A CN201110391820 A CN 201110391820A CN 102489651 B CN102489651 B CN 102489651B
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Abstract
An electro-plastic open die forging device comprises an electric brush device, a driving device and a control device, wherein the electric brush device is connected with a pulse power supply, and the control device is capable of controlling the driving device to drive the electric brush device to be contacted with or separated from blank. The control device controls the time of the electric brush device for being contacted with or separated from the blank based on the position of an upper chopping board. Therefore, when the blank is forged, under the control of the control device, the driving device drives the electric brush device to be contacted with the blank, and transverse continuous electric pulses are led to the blank. The invention further provides an electro-plastic open die forging method. The device and the method improve forming property by utilizing electro-plastic effect of metal during an open die forging process.
Description
Technical field
The present invention relates to technical field of forging, be specifically related to a kind of electro-plastic open die forging device.
Background technology
Flat-die forging is to utilize impulsive force or pressure to make metal all directions Free Transform between upper and lower anvil face, unrestricted and obtain a kind of processing method of the forging of required form and size and certain mechanical performance.For the poor material of those plasticity, generally can heat-treat, but this method faces some problems, because the character of some material itself has just determined that it is unsuitable for heat-treating, such as some high specific gravity alloy material annealing exist fragility, when plasticity index increases, intensity and hardness but obviously reduce, and heat treatment may cause the lack of homogeneity of annealing, heat time is long, and energy consumption is relatively large.
Microcosmic mechanism by metal plastic deformation is known, the essence of plastic deformation is generation and the motion of a large amount of dislocations, due to the motion of dislocation and mutual effect, in plastic deformation, the phenomenons such as the entanglement of dislocation and dislocation and reacting of second-phase and crystal defect will be produced, thereby hinder the motion of dislocation, form work hardening, make plastic deformation be difficult to continue.Electro plastic effect refers to that material is under moving electron (electric current or electric field) effect, and resistance of deformation sharply declines, the phenomenon that plasticity obviously improves.Therefore in Metal Forming process, in flow of metal direction, impose high-density current, thereby form electron wind in metal inside, electron wind acts on metal and promotes the motion of its dislocation and overcome the obstacle in motion, the impact that has alleviated the work hardening phenomenon generation of metal, improves its forming property greatly.Therefore, those skilled in the art is devoted to develop the apparatus and method that a kind of electro plastic effect that utilizes metal in the process of open die forging improves its forming property.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide the apparatus and method that a kind of electro plastic effect that utilizes metal in the process of open die forging improves its forming property.
For achieving the above object, a kind of electro-plastic open die forging device is provided, comprise brushgear, drive unit and control device, wherein this brushgear is connected with the pulse power, this control device can be controlled this drive unit and drive this brushgear and blank contact or separated, its position according to upper chopping block is controlled this brushgear contact and is left the time of blank, make when blank is forged, under the control of this control device, this drive unit drives this brushgear to contact with this blank, and passes to horizontal continuous electric pulse to this blank.
In preferred embodiments of the present invention, brushgear is connected with the pulse power, when contacting with blank, under the control of control device, to blank, passes to horizontal continuous electric pulse.
In another preferred embodiments of the present invention, this electro-plastic open die forging device comprises one or more pairs of these brushgears, is arranged in symmetrically the both sides of this blank, and this brushgear is under the effect of this drive unit, this blank transverse movement relatively, thereby contact or separated with it.
In further embodiment, the width of upper chopping block and lower chopping block are roughly the same, but the length of lower chopping block is greater than chopping block.
In further embodiment, it is corresponding that the waiting of the contact position of this brushgear and blank and blank forges position partly, and the width of the contact area of this brushgear and blank and blank wait that to forge width partly roughly the same.
The present invention also provides a kind of electro-plastic open die forging method for said apparatus, comprises the steps:
A) blank is placed on lower chopping block, this blank of feeding, what make this blank waits that forging part is positioned at the below of chopping block;
B) before chopping block forges on this, by this control device, control this drive unit, drive this brushgear contact and switch on this blank;
C) on this, chopping block completes once to forge and leaves after this blank, and this control device is controlled this drive unit, drives this brushgear separated with this blank;
D) blank described in continuation feeding, described upper chopping block is got back to initial position, thereby completes once circulation.
Further, in embodiment, the brushgear in the method is one or more pairs of, is arranged in symmetrically the both sides of blank, this brushgear under the effect of drive unit, blank transverse movement relatively, thereby contact or separated with it.
Further, in embodiment, the width of the upper chopping block in the method and described lower chopping block are roughly the same, but the length of lower chopping block is greater than chopping block.
Further in embodiment, it is corresponding that the waiting of the brushgear in the method and the contact position of blank and blank forges the position of part, and the width of the contact area of this brushgear and blank and blank wait that to forge width partly roughly the same.
Apparatus of the present invention and method have the following advantages compared to existing technology: the present invention utilizes the electro plastic effect of material, especially by brushgear, to blank, pass to horizontal continuous electric pulse, reduced the plastic deformation resistance in flat-die forging process, being specially adapted to the poor and material that is unsuitable for heat-treating of those plasticity can forging and molding, and the mode that the local electric pulse of partial operation is processed can guarantee its uniformity, also can meet the needs that localized region carries out specially treated.
Below with reference to accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is described further, to understand fully object of the present invention, feature and effect.
Accompanying drawing explanation
Fig. 1 is the stereogram of the electro-plastic open die forging device of a preferred embodiment of the present invention.
Fig. 2 is the front view of the electro-plastic open die forging device of the preferred embodiment of the present invention shown in Fig. 1.
The specific embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented take technical solution of the present invention under prerequisite, provided detailed embodiment and operating process particularly, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the present embodiment comprises: upper chopping block 1, lower chopping block 2, the pulse power 3, drive unit 4, brushgear 5, blank 6 and control device 7, wherein: lower chopping block 2 is identical with upper chopping block 1 on width, in length, on ratio, chopping block 1 is large, be equivalent to a large platform, movably brushgear 5 is worked on lower chopping block 2, the pulse power 3 is connected with brushgear 5, drive unit 4 drives brush 5 to move back and forth, brushgear 5 relative blank 6 in galvanization is symmetrical and places, the time that control device 7 carrys out control brush device 5 contact blanks 6 and leaves blank 6 by detecting the position of upper chopping block 1 according to predefined parameter.
The blank to be processed of the present embodiment is that material is the square billet of HRB335, and its specification is 150 * 150 * 3000mm, and the technological parameter of continuous impulse power supply output pulse current is: peak point current is 7000A, frequency 300HZ, pulsewidth 60 μ s, dutycycle 10%.
The course of work of the present invention is as follows: first blank 6 is positioned on lower chopping block 2, control device 7 is carried out to setting parameter, brushgear 5 is connected with the pulse power 3 by wire, extraneous give make after the certain feed of blank 6 to be processed regional area arrive flat-die hammer under, at flat-die hammer, dropping to certain distance timed unit 7 sends signal to drive unit 4 and makes 6 energisings of brushgear 5 contact blanks, at flat-die hammer, fallen to once forging and left the surperficial certain distance timed unit 7 of blank 6 and to drive unit 4, send signal its control brush device 5 is retreated, brushgear 5 is no longer contacted with blank 6, blank 6 continues to send to, flat-die hammer is got back to initial position, so far completed circulation together, operation and so forth, can complete the processing of blank.
Embodiment 2
The blank to be processed of the present embodiment is that material is the rectangular bloom of Q235, and its specification is 180 * 275 * 5000mm, and the technological parameter of continuous impulse power supply output pulse current is: peak electricity 7500A, frequency 300HZ, pulsewidth 60 μ s, dutycycle 10%.
The present embodiment is identical with other embodiments of embodiment 1.
More than describe preferred embodiment of the present invention in detail.The ordinary skill that should be appreciated that this area just can design according to the present invention be made many modifications and variations without creative work.Therefore, all technical staff in the art, all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (8)
1. an electro-plastic open die forging device, comprise chopping block, lower chopping block, brushgear, drive unit and control device, it is characterized in that, blank is placed on described lower chopping block and is fed so that the below of waiting to forge the upper chopping block described in being partly positioned at of described blank; Described brushgear is connected with the pulse power, and described control device drives described brushgear and blank contact or separated for controlling described drive unit; Described control device is controlled described brushgear contact according to the position of upper chopping block and is left the time of blank, make when described blank is forged, under the control of described control device, described drive unit drives described brushgear to contact with described blank, and pass to horizontal continuous electric pulse to described blank, and make to leave after described blank when described upper chopping block completes once to forge, described control device is controlled described drive unit and is driven described brushgear separated with described blank.
2. electro-plastic open die forging device as claimed in claim 1, it is characterized in that, described electro-plastic open die forging device comprises one or more pairs of described brushgears, be arranged in symmetrically the both sides of described blank, described brushgear is under the effect of described drive unit, relatively described blank transverse movement, thereby contact or separated with it.
3. electro-plastic open die forging device as claimed in claim 1 or 2, is characterized in that, the width of described upper chopping block and described lower chopping block are roughly the same, but the length of described lower chopping block is greater than described upper chopping block.
4. electro-plastic open die forging device as claimed in claim 3, it is characterized in that, it is corresponding that the waiting of described brushgear and the contact position of described blank and described blank forges the position of part, and the width of the contact area of described brushgear and described blank and described blank wait that to forge width partly roughly the same.
5. for an electro-plastic open die forging method for the device of electro-plastic open die forging described in claim 1, comprise the steps:
A) described blank is placed on described lower chopping block, blank described in feeding, what make described blank waits to forge the below that part is positioned at described upper chopping block;
B) before chopping block forges on described, by described control device, control described drive unit, drive described brushgear contact and switch on described blank;
C) chopping block completes once to forge and leaves after described blank on described, and described control device is controlled described drive unit, drives described brushgear separated with described blank;
D) blank described in continuation feeding, described upper chopping block is got back to initial position, thereby completes once circulation.
6. electro-plastic open die forging method as claimed in claim 5, it is characterized in that, described brushgear is one or more pairs of, be arranged in symmetrically the both sides of described blank, described brushgear is under the effect of described drive unit, relatively described blank transverse movement, thereby contact or separated with it.
7. the electro-plastic open die forging method as described in claim 5 or 6, is characterized in that, the width of described upper chopping block and described lower chopping block are roughly the same, but the length of described lower chopping block is greater than described upper chopping block.
8. electro-plastic open die forging method as claimed in claim 7, it is characterized in that, it is corresponding that the waiting of described brushgear and the contact position of described blank and described blank forges the position of part, and the width of the contact area of described brushgear and described blank and described blank wait that to forge width partly roughly the same.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110391820.4A CN102489651B (en) | 2011-12-01 | 2011-12-01 | Electro-plastic open die forging device and method |
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| CN201110391820.4A CN102489651B (en) | 2011-12-01 | 2011-12-01 | Electro-plastic open die forging device and method |
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| CN102489651A CN102489651A (en) | 2012-06-13 |
| CN102489651B true CN102489651B (en) | 2014-02-19 |
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| CN201110391820.4A Expired - Fee Related CN102489651B (en) | 2011-12-01 | 2011-12-01 | Electro-plastic open die forging device and method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104289648B (en) * | 2014-10-08 | 2016-08-24 | 吴江金泽金属制品有限公司 | A kind of automatic turning forges device |
| CN107262643A (en) * | 2017-08-02 | 2017-10-20 | 哈尔滨工业大学 | A kind of lower blanking type precision forging device and method of high rib pulse current effect of thin plate |
| CN109201983A (en) * | 2018-08-27 | 2019-01-15 | 合肥工业大学 | A kind of injection forming aluminium alloy electric plasticity multiway forging method and device |
| CN111390082B (en) * | 2020-03-19 | 2021-03-16 | 燕山大学 | Device and process for forging medium plate blank |
| CN112355211A (en) * | 2020-09-30 | 2021-02-12 | 江苏永茂普隆汽车配件制造有限公司 | Manufacturing method of free forging |
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| CN1209365A (en) * | 1997-08-22 | 1999-03-03 | 高庆雷 | Local quick-electric-heating technology for metal parts |
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| JPS59232640A (en) * | 1983-06-15 | 1984-12-27 | Hitachi Ltd | Method and device for free forging |
| JP3208134B2 (en) * | 1990-07-11 | 2001-09-10 | 亮拿 佐藤 | Forging equipment |
| US5515705A (en) * | 1992-01-23 | 1996-05-14 | Board Of Regents, The University Of Texas System | Apparatus and method for deforming a workpiece |
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| US7732734B2 (en) * | 2004-09-17 | 2010-06-08 | Noble Advanced Technologies, Inc. | Metal forming apparatus and process with resistance heating |
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| CN1209365A (en) * | 1997-08-22 | 1999-03-03 | 高庆雷 | Local quick-electric-heating technology for metal parts |
| CN101222991A (en) * | 2005-05-16 | 2008-07-16 | 特齐亚金·梅美特 | Thermoforming system for metal workpiece |
| CN201204555Y (en) * | 2008-04-30 | 2009-03-04 | 燕山大学 | Pulsed power supply unit for high-power electric plastic working |
| CN101934337A (en) * | 2010-09-21 | 2011-01-05 | 上海交通大学 | Ring-shaped electro-plastic self-piercing riveting system |
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