CN100447690C - Electromagnetic inching forming method and its device for plate moving coil - Google Patents
Electromagnetic inching forming method and its device for plate moving coil Download PDFInfo
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- CN100447690C CN100447690C CNB2006100184922A CN200610018492A CN100447690C CN 100447690 C CN100447690 C CN 100447690C CN B2006100184922 A CNB2006100184922 A CN B2006100184922A CN 200610018492 A CN200610018492 A CN 200610018492A CN 100447690 C CN100447690 C CN 100447690C
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Abstract
The present invention relates to an electromagnetic progressive shaping method for plate material moving coils and a device of the plate material moving coils, which belongs to a shaping method and a device of metal plate materials. The device comprises a computer control system, an electromagnetic force generation system, a plate material clamping lifting device, a supporting model frame, an electromagnetic shaping clamping rod, etc., which are triaxial digital control shaping systems. Through the device and according to contour line datum of a model outline, an electromagnetic shaping coil is controlled by a computer to downwards movement from the top of a model along the contour line of the model outline layer by layer. At the same time, a local of the plate material is shaped depending on electromagnetic force which is generated by the electromagnetic shaping coil until the bottom of the model, and thus, the whole shaping process is completed. Through the layered progressive plastic shaping method, the metal plate material is progressively processed into a thin shell piece which is in the shape of a three dimensional complex surface by using the method that small electromagnetic pulse force is used for performing gradational local plasticity to form cumulation and become large deformation.
Description
Technical field
The invention belongs to metal sheet forming method and device, be specially adapted to the complicated sheet metal component of automobile panel, aerospace flight vehicle of various complicated shapes and housing molding with complex-curved shape.
Background technology
Up to now, the processing of housing class workpiece such as automobile panel is to use the pressing machine calendaring molding mostly, and the complexity of its degree of depth that can stretch, moulding all is limited; And manufacturing cost height, the manufacturing cycle of mould are long.This develops new product, contends for markets for enterprise all is bigger obstacle.
Electromagnetic forming technique has that machining energy is easy to that accurate control, forming speed are fast, Forming Workpiece precision height, shaping dies simply reach characteristics such as equipment interoperability is strong, and whole forming process is pollution-free, now has been widely used in numerous areas such as machinery, electronics, auto industry, light industry and instrument and meter, Aero-Space, weapon industry.The ultimate principle of electro-magnetic forming is the law of electromagnetic induction in the physics, one pulsed magnetic field passes workpiece and produce induction current on workpiece, the magnetic field and initial electric field, the magnetic field that produce have produced enormous function power each other, when the surge pressure value reaches the yield strength of workpiece material, plastic yield will take place in workpiece, and electro-magnetic forming processing utilizes electromagnetic force just, and plastic yield reaches metal parts shaping purpose to workpiece.
Patent No. 92232008.X, name is called in the utility model patent of " the metal works forming machine that utilizes electromagnetic force work ", and electro-magnetic forming coil and workpiece to be machined are fixed adding man-hour, can realize multi-point forming.98813440.3 of the patent No.s are called in the patent of invention of " utilizing pulsed magnetic force flat board to be made the equipment and the method for dish ", two kinds of patterns that plate forming is the butterfly part have been proposed, a kind of form-wound coil group of being made up of a plurality of coils can move along the direction perpendicular to sheet material, sheet material is formed is pressed against on the die; Another kind is that coil can move as straight line along the plane that is parallel to sheet material, and utilizes pulse electromagnetic intermittently that sheet material is formed to be pressed against on the die; The forming mode that proposes in this patent, the electro-magnetic forming coil groups can only be moved on two dimensional surface, and its processing flexibility degree is not high.These electro-magnetic forming technologies all exist certain limitation at present, and the shape of processing parts is had certain requirement, and the operation of the workpiece that deep drawing or deflection are big all inconvenience is carried out on these electro-magnetic forming equipment.
00230779.0 of the patent No. is called in the utility model patent of " multifunctional numerical control molding machine ", and the luxuriant husband in Songyuan City of Japan has proposed the processing mode of the progressive moulding of sheet material numerical control.Its principle of work is: processed plate rack on a core, is used the pressing plate fastening material around sheet material, this pressing plate can slide up and down along guide pillar.Add man-hour, this device is fixed on the End Milling Process lathe of three-shaft linkage, walk isocontour mode, sheet material progressively is pressed against on the core rod, finally be configured as a part with tool heads of job sequence control of establishment in advance.But this method has following shortcoming: the poor dimensional precision of formation of parts, and its radius-of-curvature is subjected to the restriction of tool heads radius, can not be very little, and also there is cut in the surface, and surface quality is relatively poor; Because the instrument pressure head does friction slip on sheet material, resistance is big, creases easily and pulls open.
Summary of the invention
The present invention proposes a kind of sheet material moving-coil electromagnetism progressive molding method and device thereof, purpose is at deficiency of the prior art, electromagnetic forming technique is introduced in the sheet material numerical control progressive molding, the characteristics of comprehensive dull and stereotyped electro-magnetic forming and sheet material digitizing progressive molding, directly drive with cad model, rely on the electromagnetic force between electro-magnetic forming coil and the slab to make slab paste mould layering shaping.
A kind of sheet material moving-coil electromagnetism progressive molding method of the present invention comprises the steps: (1) data that layering is obtained according to workpiece to be processed CAD 3D model slice, converts the NC data to; (2) computing machine is realized three-shaft linkage by NC Data Control electro-magnetic forming coil on the three-axis numerical control formation system; Pulse energy storage capacitor by the electromagnetic force generation systems when (3) three-dimensional curve of electro-magnetic forming coil work regulation moves constantly discharges and recharges the electromagnetic pulse power that discharges, rely on the electromagnetic force between electro-magnetic forming coil and the sheet material that sheet material is carried out the plastic working of the progressive part of single-point, make plate progressively be configured as required workpiece.
Described sheet material moving-coil electromagnetism progressive molding method, the electric capacity of described pulse energy storage capacitor can be 300～30000V for 10～60000 μ F, operating voltage, it is circular or oval that the electro-magnetic forming coil shape can be, electro-magnetic forming winding wire cross sectional shape can for rectangle to realize component shaping to difformity and material.
A kind of sheet material moving-coil electromagnetism progressive molding device of the present invention is made up of computer control system, electromagnetic force generation systems and three-axis numerical control formation system; Bottom installation platform in the described three-axis numerical control formation system straight-side frame, the shaped as frame supporting plate of worktable top is equipped with four guide pillars and constitutes carriage, have the shaped as frame clamping plate above the shaped as frame supporting plate, four guide pillars can slide up and down by the guide pin bushing on the worktable, are arranged with the support gearing that supports supporting plate and can drive the supporting plate lifting at worktable; Moving beam is positioned at the straight-side frame end face, can move along directions X; Slide plate is contained on the moving beam, can moves in the Y direction along moving beam; The slide block that the lower end is provided with supporting rod is contained in the slide plate, and the electro-magnetic forming coil is installed in the supporting rod termination, and under computer control system control, the supporting rod band the electro-magnetic forming coil can do the three-dimensional curve motion; It is characterized in that the electromagnetic force generation systems comprises pulse energy storage capacitor group, charging device, charge switch, discharge switch and electro-magnetic forming coil, the pulse energy storage capacitor group is connected with charging device, charge switch and is constituted charge circuit; The pulse energy storage capacitor group is connected with discharge switch and electro-magnetic forming coil and is constituted discharge loop; The electric capacity of pulse energy storage capacitor group is 10～60000 μ F, operating voltage 300～30000V.
Described sheet material moving-coil electromagnetism progressive molding device, described charging device can be dc charger; The electro-magnetic forming coil can be for circular or oval close around the lead plate coil, and electro-magnetic forming winding wire cross sectional shape can be rectangle.
Described sheet material moving-coil electromagnetism progressive molding device, the support gearing of described drive supporting plate lifting can be in cylinder, hydraulic cylinder, linear electric motors gearing or the rack and pinion drive a kind of.
Electromagnetic pulse power, computing machine, Numeric Control Technology that the present invention uses little energy form the three-dimensional progressive molding method of a kind of sheet metal numerical control electromagnetic, the data-switching that layering is obtained according to the CAD 3D model slice becomes the NC data, by the computer control three-shaft linkage, the electro-magnetic forming coil that control is placed in the slide block termination moves as three-dimensional curve, rely on programmed control capacitor group to discharge and recharge continuous release electromagnetic pulse power repeatedly simultaneously, the sheet material that is fixed on the clamping supporting mechanism is carried out the shaping of layering selectively processing.Interlamellar spacing as setting is Δ h, be to control the electro-magnetic forming coil zero point then with the workpiece top, the pulse energy storage capacitor group is discharged first, between sheet material and electro-magnetic forming coil, produce electromagnetic force, make the sheet material of the below of the electro-magnetic forming coil pit that height is Δ h that is depressed, then the direction of the movement locus appointment that obtains along the outline line according to this layer of electro-magnetic forming coil moves the distance of one section setting, while pulse energy storage capacitor group is finished charging and is discharged once more, make sheet material second height that be depressed be Δ h pit and be connected with first pit, form continuous distortion, discharge then-move-discharge-move and carry out repeatedly, go around by the track of the contour wire loop of this layer up to the electro-magnetic forming coil and to get back to starting point, finish processing this moment to workpiece top layer profile, formed the contour surface of ground floor, then descend again Δ h height and repeat said process of electro-magnetic forming coil, by that analogy, up to the shaping of finishing whole layers, the i.e. mode that is shaped by the layering progressive plastic is implemented many sequential local plastics with little electromagnetic pulse power and is shaped and accumulates the method that becomes large deformation sheet material is processed into the thin shell piece identical with the three-dimensional digital model shape progressively.
The present invention has following advantage:
When (1) the electro-magnetic forming coil moves as three-dimensional curve, the pulse energy storage capacitor group discharges and recharges continuous release electromagnetic pulse power repeatedly and makes the sheet material progressive molding, since be electromagnetic force in action, forming speed is not subjected to the restriction of moving-member machinery inertial, the electromagnetic pulse load time can reach the precision of microsecond, the intensity of electromagnetic pulse load can electric power control reach very high precision, the variation of energy that the electro-magnetic forming coil produces and power that metal plate is applied can be controlled in total amount 0.5% in, because the planform size adjustable of electro-magnetic forming coil, so can carry out the complexity of big plate is shaped, can carry out local fine shaping again, realize quantitative Accurate Shaping.Because can quantitatively controlling of the various technological parameters of electromagnetism progressive molding, so good reproducibility, realize energy control and automated production easily.
(2) because electro-magnetic forming is to make medium with magnetic field, and can pass the non-conductor material, be the noncontact process, no instrument contacts with the workpiece deformation surface, damage at shaping surface inorganic tool, therefore workpiece plating earlier, anodization before the progressive processing of numerical control electromagnetic, spray paint, its surface, back that is shaped is not affected.In addition, workpiece polishing or the surface treatment difficulty can polish earlier or first surface treatment reshapes to being difficult for after some shaping.Because forming process does not have the machinery contact, does not have friction, need not lubricate, thereby working environment or workpiece are not all polluted;
(3) different with traditional metal forming technology, most metal forming occurs in after the impulse load end.Between action period, metal promptly quickens and obtains very high kinetic energy in impulse load, and kinetic energy is converted into the deformation energy of flow of metal afterwards.This just can make the accurate consistent of workpiece and mould in the shaping operation, and this high-rate forming has improved the forming limit of material;
(4) because the duration of impulse load is the microsecond level, owing to there is not static force in forming process, the power that acts on the mould is less, therefore lower to the mold materials requirement, relative lighter material can be used for mould;
(5) unrelieved stress of workpiece is low.It is stressed that electro-magnetic forming comes down to have in the workpiece material molecule, atom or the electronics of electric charge, irrelevant with the workpiece shape, so workpiece is stressed evenly, this helps the abundant distortion of workpiece, can improve the plasticity of material, and distortion back unrelieved stress is little, the life-span that can improve product effectively;
(6) forming accuracy height and workpiece material performance are constant.The speed of electro-magnetic forming processing is exceedingly fast, and contactless again, forming process produces heat hardly, so the machinery of workpiece material, physics, chemical property are also just constant;
(7) electromagnetism progressive molding cost is low, and speed is fast, is shaped accurately, only needs half of mould punch or die during the electromagnetism progressive molding, does not have the matching relationship between a pair of punch, the die, is suitable for and complex-shaped or special-shaped component shaping.Mould is installed easily, is easy to make, and has reduced production cost, and its cost is sometimes less than 10% of general pressure forming mould.Be applicable to the almost slab of Any shape that is shaped, the wrinkling of slab outside can reduce to insignificant degree, can realize the automobile large-scale covering to the curved surface complexity, the shaping of Aeronautics and Astronautics aircraft;
Description of drawings
Fig. 1: apparatus of the present invention schematic diagram;
Fig. 2: apparatus of the present invention stereographic map;
Fig. 3 A, Fig. 3 B: utilize job operation synoptic diagram of the present invention;
Fig. 4 A: utilize the present invention to process the round platform synoptic diagram;
Fig. 4 B: the round platform stereographic map that processes;
Fig. 5 A: utilize the present invention side of processing frustum synoptic diagram;
Fig. 5 B: the square frustum stereographic map that processes;
Fig. 6: the present invention's ship shape example stereographic map that is shaped.
Be labeled as in the accompanying drawing: computer control system 1, electromagnetic force generation systems 2, three-axis numerical control formation system 3, pulse energy storage capacitor group 4, charging device 5, charge switch 6, discharge switch 7, slide plate 8, slide block 9, coil is seized bar 10 on both sides by the arms, electro-magnetic forming coil 11, sheet material 12, clamping plate 13, moving beam 14, straight-side frame 15, supporting plate 16, guide pillar 17, support gearing 18, support 19, bolster model 20, worktable 21, guide pin bushing 22, machining locus 23, machining path 24, fixed support 25.
Embodiment
Describe the detail and the working condition of embodiment of the invention equipment in detail below in conjunction with Fig. 1, Fig. 2 and Fig. 3.
As depicted in figs. 1 and 2, device of the present invention is made up of computer control system 1, electromagnetic force generation systems 2 and three-axis numerical control formation system 3; The electromagnetic force generation systems comprises pulse energy storage capacitor group 4, charging device 5, charge switch 6, discharge switch 7 and electro-magnetic forming coil 11; Three-axis numerical control formation system 3 is made up of moving beam 14, straight-side frame 15, slide plate 8, slide block 9, supporting rod 10, clamping plate 13, supporting plate 16, guide pillar 17, support gearing 18, support 19, worktable 21 etc.Slide block 9 is contained in the slide plate 8, and the lower end of slide block 9 is provided with supporting rod 10, and electro-magnetic forming coil 11 is contained in supporting rod 10 terminations, and under computer control, supporting rod 10 is being with electro-magnetic forming coil 11 can do the three-dimensional curve motion.Processed sheet material 12 is placed on the supporting plate 16, between bolster model 20 and electro-magnetic forming coil 11, and with clamping plate 13 sheet material 12 is clamped.Supporting plate 16 is equipped with four guide pillars 17 and constitutes carriage, and guide pillar 17 can slide by four guide pin bushing 22 easy on and off on the worktable 21.Be arranged with at worktable and can support supporting plate 16 and can drive the support gearing 18 that supporting plate 16 moves up and down.Three-axis numerical control formation system 3 can be a digitally controlled mold-free plate molding machine, sees Chinese patent ZL00115996.8.
The implementation method of Fig. 3 A, 3B explanation sheet material moving-coil electromagnetism progressive molding, sheet material 12 is clamped in clamping plate 13 and supporting plate 16 centres, the track data that obtains of the outline line that layering is obtained according to the CAD 3D model slice converts the NC data to then, and the electro-magnetic forming coil 11 that is placed in supporting rod 10 lower ends by computer control system 1 control is implemented three-dimensional motions; Under computer control, electro-magnetic forming coil 11 is gone to the movement locus on model top earlier and is specified start position, and the stratification layer spacing of setting is Δ h, and electro-magnetic forming coil 11 is opposed and near profiled surface with processed sheet material 12 surfaces; Can discharging and recharging continuously and discharging and recharging opportunity according to the program of prior establishment by computer control system 1 gating pulse energy-storage capacitor group 4, beginning discharge switch 7 is not conductings, charging device 5 is to pulse energy storage capacitor 6 chargings, make the enough energy of its storage, after reaching operating voltage, trigger discharge switch 7 conductings by computer control system 1 control, 4 pairs of electro-magnetic forming coil 11 rapid discharges of pulse energy storage capacitor group, produce the High Voltage pulse current, thereby excite strong pulsed magnetic field B, the transition strong pulsed magnetic field produces induction current at plate surface, this induction current produces counter magnetic flux B ' again, and and the magnetic field that produces of coil between workpiece and coil, strengthen in the same way and mutually, by Lenz law as can be known, between sheet material and electro-magnetic forming coil, produce electromagnetic force, when the electromagnetic force that acts on sheet material surpasses the yield limit of material, sheet material 12 pit that a height is Δ h that is depressed below electro-magnetic forming coil 11 produces local plastic yield, it is relative with another part of sheet material 12 that then the direction of the movement locus appointment that obtains along the outline line according to this layer of electro-magnetic forming coil 11 moves to next position, pulse energy storage capacitor group 4 chargings simultaneously finish and discharge once more, sheet material is depressed pit that second height be Δ h also is connected with first pit, form continuous distortion, discharge then-move-discharge-move and carry out repeatedly, go around by the track of the contour wire loop of this layer up to electro-magnetic forming coil 11 and to get back to starting point, finish processing this moment to workpiece top layer profile, formed the contour surface of ground floor, as shown in Figure 3A; Then electro-magnetic forming coil 11 decline Δ h highly, Be Controlled enters the starting point of the movement locus of workpiece second layer profile, and keeps relative with sheet material 12, and the track of going around as ground floor is got back to starting point, formed the profile of the workpiece second layer this moment, shown in Fig. 3 B; A circle circle like this discharges and recharges continuous release electromagnetic pulse power repeatedly by pulse energy storage capacitor group 4 from level to level, makes sheet material 12 little by little be accumulated the 3D shape that is processed to form an integral body by local deformation one by one, is shaped up to whole work-piece and finishes.
Sheet material moving-coil electromagnetism progressive molding method comprises progressive stretch forming of forward (the outer shaping) and reverse progressive stretch forming (internal shaping) dual mode.The present invention is described further below in conjunction with specific embodiment.
Embodiment 1:
In building mortion, pulse energy storage capacitor is got 56000 μ F, operating voltage 400V, the electro-magnetic forming coil is that the red copper electromagnetic wire coiling of 2.5mm * 5mm becomes the circular close around the lead plate coil of diameter of phi 70mm by specification, use epoxy resin and glasscloth insulation between form-wound coil circle and the circle, discharge loop all-in resistance 0.167 Ω, total inductance 3.7 μ H, duration of charging is 4 seconds, and sheet material is the AA6061-T6 aluminium alloy, and thickness is 1mm, original dimension is 410mm * 410mm, being configured as the base diameter is Φ 350mm, and high 150mm, cone angle are 76 ° round platform.Shown in Fig. 4 A, take the mode of the progressive stretch forming of forward electromagnetism, electro-magnetic forming coil 11 relies on the outside surface progressive molding sheet material 12 of electromagnetic force along model 20, and the edge of sheet material 12 descends along with the decline of electro-magnetic forming coil 11, finish until shaping, shown in Fig. 4 B.
Specific implementation process is: under computer control, electro-magnetic forming coil 11 is gone to the movement locus on model 20 tops earlier and is specified start position, the stratification layer spacing of setting is 7mm, electro-magnetic forming coil 11 is opposed and near profiled surface with processed sheet material 12 surfaces, 4 pairs of electro-magnetic forming coils 11 of pulse energy storage capacitor group discharge first, between sheet material 12 and electro-magnetic forming coil 11, produce electromagnetic force, sheet material 12 pit that height is 7mm that below electro-magnetic forming coil 11, is depressed, then the direction of the movement locus appointment that obtains along the outline line according to this layer of electro-magnetic forming coil 11 moves 35mm, relative to next position with another part of sheet material 12, pulse energy storage capacitor group 4 chargings simultaneously finish and discharge once more, sheet material is depressed pit that second height be 7mm also is connected with first pit, form continuous distortion, discharge then-move-discharge-move and carry out repeatedly, go around by the track of the contour wire loop of this layer up to the electro-magnetic forming coil and to get back to starting point, finish processing this moment to workpiece top layer profile, formed the contour surface of ground floor, then descend again 7mm height and repeat said process of electro-magnetic forming coil, by that analogy, up to the shaping of finishing whole layers, the shape of cutting edge after component shaping finishes is shown in Fig. 4 B.
Embodiment 2:
In building mortion, pulse energy storage capacitor is got 60 μ F, operating voltage 26.9KV, the electro-magnetic forming coil is that the red copper electromagnetic wire coiling of 2mm * 6mm becomes the circular close around the lead plate coil of diameter of phi 90mm by specification, use epoxy resin and glasscloth insulation between form-wound coil circle and the circle, discharge loop all-in resistance 0.159 Ω, total inductance 3.4 μ H, duration of charging is 5 seconds, and sheet material is the SUS304 stainless steel, and thickness is 0.2mm, original dimension is 410mm * 410mm, being configured as the base length of side is 350mm, and high 150mm, cone angle are 60 ° square frustum.Shown in Fig. 5 A, take the mode of the progressive stretch forming of reverse electromagnetism, electro-magnetic forming coil 11 is shaped along the inside surface of model 20, the edge of sheet material 12 is fixed by fixed support 25 and is not descended, electro-magnetic forming coil 11 by the edge entad portion rely on electromagnetic force to make sheet material 12 progressive moldings, finish until shaping, shown in Fig. 5 B.
Specific implementation process is: under computer control, electro-magnetic forming coil 11 is gone to the movement locus on model 20 tops earlier and is specified start position, the stratification layer spacing of setting is 10mm, electro-magnetic forming coil 11 is opposed and near profiled surface with processed sheet material 12 surfaces, 4 pairs of electro-magnetic forming coils 11 of pulse energy storage capacitor group discharge first, between sheet material and electro-magnetic forming coil, produce electromagnetic force, sheet material 12 pit that height is 10mm that below electro-magnetic forming coil 11, is depressed, then to move 45mm relative with another part of sheet material 12 to next position for the direction of the movement locus appointment that obtains along the outline line according to this layer of electro-magnetic forming coil 11, pulse energy storage capacitor group 4 chargings simultaneously finish and discharge once more, sheet material is depressed pit that second height be 10mm also is connected with first pit, form continuous distortion, discharge then-move-discharge-move and carry out repeatedly, go around by the track of the contour wire loop of this layer up to the electro-magnetic forming coil and to get back to starting point, finish processing this moment to workpiece top layer profile, formed the contour surface of ground floor, then descend again 10mm height and repeat said process of electro-magnetic forming coil, by that analogy, up to the shaping of finishing whole layers, the shape of cutting edge after component shaping finishes is shown in Fig. 5 B.
Embodiment 3:
In building mortion, pulse energy storage capacitor is got 1000 μ F, operating voltage 2500V, the electro-magnetic forming coil is that the red copper electromagnetic wire coiling of 2.2mm * 5mm becomes the circular close around the lead plate coil of diameter of phi 100mm by specification, use epoxy resin and glasscloth insulation between form-wound coil circle and the circle, discharge loop all-in resistance 0.115 Ω, total inductance 2.7 μ H, the duration of charging is 5 seconds, sheet material is OHFC copper, thickness is 1.6mm, and this example is a housing that is made into shipform, as shown in Figure 6, the relative sidewall sections in the two sides of this housing is 15 ° with respect to the angle of vertical direction, long 800mm, wide 400mm, high 300mm.Take the mode of the progressive stretch forming of forward electromagnetism as embodiment 1.
Specific implementation process is: under computer control, electro-magnetic forming coil 11 is gone to the movement locus on model 20 tops earlier and is specified start position, the stratification layer spacing of setting is 15mm, electro-magnetic forming coil 11 is opposed and near profiled surface with processed sheet material 12 surfaces, 4 pairs of electro-magnetic forming coils 11 of pulse energy storage capacitor group discharge first, between sheet material and electro-magnetic forming coil, produce electromagnetic force, sheet material 12 pit that height is 15mm that below electro-magnetic forming coil 11, is depressed, then the direction of the movement locus appointment that obtains along the outline line according to this layer of electro-magnetic forming coil 11 moves 50mm, relative to next position with another part of sheet material 12, pulse energy storage capacitor group 4 chargings simultaneously finish and discharge once more, sheet material is depressed pit that second height be 15mm also is connected with first pit, form continuous distortion, discharge then-move-discharge-move and carry out repeatedly, go around by the track of the contour wire loop of this layer up to the electro-magnetic forming coil and to get back to starting point, finish processing this moment to workpiece top layer profile, formed the contour surface of ground floor, then descend again 15mm height and repeat said process of electro-magnetic forming coil, by that analogy, up to the shaping of finishing whole layers, the shape of cutting edge after component shaping finishes as shown in Figure 6.
Claims (5)
1, a kind of sheet material moving-coil electromagnetism progressive molding method comprises the steps: (1) data that layering is obtained according to workpiece to be processed CAD 3D model slice, converts the NC data to; (2) computing machine is realized three-shaft linkage by NC Data Control electro-magnetic forming coil on the three-axis numerical control formation system; Pulse energy storage capacitor by the electromagnetic force generation systems when (3) three-dimensional curve of electro-magnetic forming coil work regulation moves constantly discharges and recharges the electromagnetic pulse power that discharges, rely on the electromagnetic force between electro-magnetic forming coil and the sheet material that sheet material is carried out the plastic working of the progressive part of single-point, make plate progressively be configured as required workpiece.
2, sheet material moving-coil electromagnetism progressive molding method as claimed in claim 1, the electric capacity that it is characterized in that described pulse energy storage capacitor is that 10～60000 μ F, operating voltage are 300～30000V, the electro-magnetic forming coil shape is circular or oval, and electro-magnetic forming winding wire cross sectional shape is that rectangle is to realize the component shaping to difformity and material.
3, be used for the sheet material moving-coil electromagnetism progressive molding device of the described sheet material moving-coil of claim 1 electromagnetism progressive molding method, form by computer control system, electromagnetic force generation systems and three-axis numerical control formation system; Bottom installation platform in the described three-axis numerical control formation system straight-side frame, the shaped as frame supporting plate of worktable top is equipped with four guide pillars and constitutes carriage, have the shaped as frame clamping plate above the shaped as frame supporting plate, four guide pillars can slide up and down by the guide pin bushing on the worktable, are arranged with the support gearing that supports supporting plate and can drive the supporting plate lifting at worktable; Moving beam is positioned at the straight-side frame end face, can move along directions X; Slide plate is contained on the moving beam, can moves in the Y direction along moving beam; The slide block that the lower end is provided with supporting rod is contained in the slide plate, and the electro-magnetic forming coil is installed in the supporting rod termination, and under computer control system control, the supporting rod band the electro-magnetic forming coil can do the three-dimensional curve motion; It is characterized in that the electromagnetic force generation systems comprises pulse energy storage capacitor group, charging device, charge switch, discharge switch and electro-magnetic forming coil, the pulse energy storage capacitor group is connected with charging device, charge switch and is constituted charge circuit; The pulse energy storage capacitor group is connected with discharge switch and electro-magnetic forming coil and is constituted discharge loop; The electric capacity of pulse energy storage capacitor group is 10～60000 μ F, operating voltage 300～30000V.
4. sheet material moving-coil electromagnetism progressive molding device as claimed in claim 3 is characterized in that described charging device is a dc charger; The electro-magnetic forming coil is circular or oval close around the lead plate coil, and electro-magnetic forming winding wire cross sectional shape is a rectangle.
5. as claim 3 or 4 described sheet material moving-coil electromagnetism progressive molding devices, it is characterized in that the support gearing of described drive supporting plate lifting is a kind of in cylinder, hydraulic cylinder, linear electric motors gearing or the rack and pinion drive.
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| CNB2006100184922A CN100447690C (en) | 2006-03-07 | 2006-03-07 | Electromagnetic inching forming method and its device for plate moving coil |
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| CNB2006100184922A CN100447690C (en) | 2006-03-07 | 2006-03-07 | Electromagnetic inching forming method and its device for plate moving coil |
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