CN106270104B - A kind of magnetic field impulse hole flanging formation method of housing component - Google Patents
A kind of magnetic field impulse hole flanging formation method of housing component Download PDFInfo
- Publication number
- CN106270104B CN106270104B CN201610808481.8A CN201610808481A CN106270104B CN 106270104 B CN106270104 B CN 106270104B CN 201610808481 A CN201610808481 A CN 201610808481A CN 106270104 B CN106270104 B CN 106270104B
- Authority
- CN
- China
- Prior art keywords
- hole flanging
- coil
- hole
- flanging
- capacitor group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A kind of magnetic field impulse hole flanging formation method of housing component, it is related to shell hole flanging part manufacturing process, with solve the problems, such as existing punching block hole flanging legal system make flanging bore process there are complex process, production efficiency is low, the production cycle is long, method and step are as follows: Step 1: according to the cambered shell part of processed pre-manufactured hole design hole flanging coil rack shape；Step 2: the cambered shell part of processed pre-manufactured hole is placed on hole flanging female die for forming, the inner surface of cambered shell part is circumferentially arranged blank holder, hole flanging coil rack is wound with the hole flanging coil to match with hole flanging deformed area, hole flanging coil covers and the hole flanging deformed area that reclines, one end of capacitor group is connected with one terminals of hole flanging coil, the other end of capacitor group is connected with gap switch one end, the other end of gap switch is connected with another terminals of hole flanging coil, and capacitor group is charged to preset voltage value；Step 3: magnetic field impulse hole flanging shapes；Step 4: hole flanging school shape.The present invention is shaped for shell hole flanging part.
Description
Technical field
The present invention relates to shell hole flanging part manufacturing process, it is related to that various forming difficulty are big, the demanding part of forming quality
Hole flanging forming technology, belong to sheet metal Plastic Forming manufacturing field.
Background technique
In aerospace craft, the hole flanging formed features being usually present on curved surface or plane shell components, such as one
As liquid-propellant rocket engine fuel tank bottom plate and the components such as side wall in, needed between pipeline and cabinet using welding method
Connection improves welding quality and intensity to create better condition to welding, needs to manufacture a high quality on cabinet
Flanging bore.Conventional method for flanging is exactly directly to use punching block hole flanging, and this method needs a set of large-scale forming work with punch-die
Dress and big bed press, high production cost, period are long.When hole flanging coefficient is smaller, circular cross-esction deformed area, which is easy to produce, to be split
Line, it usually needs passage forming process will be polished among process, deburring and annealing, and manufacturing process is considerably complicated, causes
Keep production efficiency low, high rejection rate is at high cost, and labor intensity of workers is big.
Summary of the invention
The present invention be solve existing punching block hole flanging legal system make flanging bore process there are complex process, production efficiency is low, production
The problem of period length, provides a kind of magnetic field impulse hole flanging formation method of housing component.
The technical solution adopted by the present invention to solve the above problem is as follows: a kind of magnetic field impulse hole flanging formation method packet of housing component
Include following steps:
Step 1: designing the shape of hole flanging coil according to the cambered shell part of processed pre-manufactured hole；
Step 2: the cambered shell part of processed pre-manufactured hole is placed on hole flanging female die for forming, cambered shell part it is interior
Surface is circumferentially arranged blank holder, and hole flanging female die for forming and blank holder clamp cambered shell part, reserves hole flanging deformed area,
Arrange that hole flanging coil rack, hole flanging coil rack are wound with the hole flanging coil to match with hole flanging deformed area, hole flanging in blank holder
Coil covers and the hole flanging deformed area that reclines, and hole flanging coil and pre-manufactured hole are coaxially disposed, hole flanging coil by rectangular section copper circle line around
System；One end of capacitor group is connected with one terminals of hole flanging coil, the other end of capacitor group is connected with gap switch one end,
The other end of gap switch is connected with another terminals of hole flanging coil, and capacitor group is charged to preset voltage value；
Step 3: disconnecting charge circuit after the charging of capacitor group, closed-gap switch, then discharge loop is connected,
Capacitor group generates decaying concussion pulse high current and corresponding transient changing magnetic field, according to electromagnetism sense through coil discharge
Principle is answered, above-mentioned discharge process can generate induced electricity corresponding with hole flanging coil current in the hole flanging deformed area of cambered shell part
Stream, the induced current of hole flanging deformed area can also generate induced magnetic field, and hole flanging coil current magnetic field and induced current magnetic field are in hole flanging
Enhance between coil and hole flanging deformed area, by acting on induced current, generates the normal direction pulsed magnetic for acting on hole flanging deformed area
Field force, since hole flanging coil is fixed, and deformation downwards and movement occur under the effect of this normal force for hole flanging deformed area, by
Gradually recline the transition circle edged surface and vertical surface of hole flanging female die for forming, is formed to transition circle arc side and the deformation for digging straight wall,
Until deformation force amplitude sharply declines；
Step 4: the hole flanging coil rack of step 3 is replaced with solenoid-shaped coil skeleton, by rectangular section copper circle line
It is wrapped on hole flanging coil rack and forms cylindric solenoid-shaped coil, by one end of capacitor group and the tubular line of cylindric helical
It encloses a terminals to be connected, the other end of capacitor group is connected with gap switch one end, the other end of gap switch and cylindric spiral shell
Another terminals of line tubular coil are connected, and capacitor group is charged to preset voltage value；After the charging of capacitor group, break
Charge circuit is opened, closed-gap switch, then discharge loop is connected, and capacitor group is discharged through cylindric solenoid-shaped coil, generates
Decaying shakes pulse high current and acts on the radial impulse load of the straight wall of flanging bore, and the straight wall of flanging bore is made to generate high-speed
Radial deformation, until mold, dismantle cylindric solenoid-shaped coil and blank holder take out the shell with hole flanging shaped
Part.
The beneficial effects of the present invention are: the present invention proposes the magnetic field impulse hole flanging formation method of the housing component of design.Compared to
General punching block forming, this method has the advantages that (1) can improve the forming limit of material, reduce hole flanging coefficient, for needing
Process can be simplified by wanting the multi-pass hole flanging forming process of intermediate annealing, usually once-forming to can be achieved with processing purpose, not needed
Heat treatment procedures, the forming periods such as annealing are short；(2) fixture for forming can be simplified, do not needed with large pressing machine, it is only necessary to single side mould
Tool, does not need punch-pin；(3) formation of parts surface quality is preferable, no marking, high yield rate；(4) it is obtained in the case of identical pre-manufactured hole
Higher straight wall height；(5) in forming process, the good mold of hole flanging straight wall can be guaranteed by a step electromagnetic sizing process
Property, to solve the problems, such as that mold is sprung back excessive in punching block forming process.
The present invention can solve some figuration manufacture problems with big, the at high cost part of punching blocks forming difficulty, such as when turning over
Hole coefficient is smaller and when the plasticity of part is lower, or when having occurred and that quasi-static predeformation housing component reprocessing hole flanging feature.
This kind of part needs the annealing heat-treatment between the i.e. adjacent process of multiple working procedure with traditional punching block forming, but there are still rejection rates
The deficiencies of low, poor dimensional precision.For some parts for requiring mold degree high, technology can satisfy by secondary school shape and want
It asks.General punching block forming process and its subsequent school shape want mold since the springback influence of part is difficult to eliminate
Higher part is asked to be difficult to meet requirement on machining accuracy.Meanwhile method proposed by the present invention does not have rubbing for punch-pin and piece surface
It wipes, surface quality also available guarantee.In addition, tooling required for magnetic pulse formation also shapes letter than traditional punching block
It is single.
Hole flanging forming is carried out to plate with the present invention, can simplify technology and pattern assembly, solves the forming of certain difficult shaped sheets
Problem improves forming quality etc..It is more demanding for some pairs of product qualities, or some spies relatively difficult to achieve are shaped with punching block
The hole flanging forming of different part, such as bellmouth, polygonal hole, axial hole, can be compound using this magnetic pulse formation school shape
Method.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram combined before flanging bore of the present invention shapes, and Fig. 2 is that magnetic pulse formation of the present invention turns over
Lateral opening process schematic, the apparatus structure signal that Fig. 3 is combined before the straight wall school shape for the higher-height flanging bore of Fig. 2
Figure, Fig. 4 are schematic diagram after the straight wall school shape of higher-height flanging bore.
Specific embodiment
Specific embodiment 1: illustrating that a kind of magnetic field impulse hole flanging formation method of housing component, it includes in conjunction with Fig. 1-Fig. 4
Following steps:
Step 1: designing the shape of hole flanging coil 3 according to the cambered shell part 2 of processed pre-manufactured hole 2-2；
Step 2: the cambered shell part 2 of processed pre-manufactured hole 2-2 is placed on hole flanging female die for forming 1, cambered shell part
2 inner surface is circumferentially arranged blank holder 6, and cambered shell part 2 is clamped, reserves and turn over by hole flanging female die for forming 1 and blank holder 6
Bore deformation area 2-1, blank holder 6 is interior to arrange that hole flanging coil rack 4, hole flanging coil rack 4 are wound with and hole flanging deformed area 2-1 phase
The hole flanging coil 3 matched, the covering of hole flanging coil 3 and the hole flanging deformed area 2-1 that reclines, hole flanging coil 3 and pre-manufactured hole 2-2 are coaxially disposed,
Hole flanging coil is by rectangular section copper circle line coiling；
One end of capacitor group 7 is connected with 3 one terminals of hole flanging coil, the other end and gap switch 8 of capacitor group 7
One end is connected, and the other end of gap switch 8 is connected with another terminals of hole flanging coil 3, and capacitor group 7 is charged to preset electricity
Pressure value；
Step 3: disconnecting charge circuit, closed-gap switch 8, then discharge loop is led after capacitor group 7 charges
Logical, capacitor group 7 generates decaying concussion pulse high current and corresponding transient changing magnetic field, according to electricity through coil discharge
Magnetic induction principle, above-mentioned discharge process can generate corresponding with hole flanging coil current in the hole flanging deformed area of cambered shell part 2
Induced current, the induced current of hole flanging deformed area can also generate induced magnetic field, hole flanging coil current magnetic field and induced current magnetic field
Enhance between hole flanging coil 3 and hole flanging deformed area 2-1, by acting on induced current, generation acts on hole flanging deformed area 2-1
Normal direction pulse magnet field force, since hole flanging coil 3 is fixed, and hole flanging deformed area 2-1 this normal force effect under occur
Deformation downwards and movement, the transition circle edged surface and vertical surface of the hole flanging female die for forming 1 that instantaneously reclines are formed to transition circle arc side and straight
Wall deformation, until deformation force amplitude sharply declines；
Step 4: the hole flanging coil rack 4 of step 3 is replaced with line solenoid ring framework 9, solenoid coil 10 is twined
It is wound on line solenoid ring framework 9, solenoid coil 10 is placed with the hole flanging deformed area 2-1 coaxial-symmetrical dug, by capacitor
One end of group 7 is connected with cylindric 10 1 terminals of solenoid-shaped coil, the other end of capacitor group 7 and 8 one end of gap switch
It is connected, the other end of gap switch 8 is connected with another terminals of cylindric solenoid-shaped coil 10, and capacitor group 7 is charged to
Preset voltage value；After capacitor group 7 charges, charge circuit is disconnected, closed-gap switch 8, then discharge loop is connected,
Capacitor group 7 is discharged through cylindric solenoid-shaped coil 10, is generated decaying concussion pulse high current and is acted on the straight of flanging bore
The radial impulse load of wall 2-3 makes the straight wall 2-3 of flanging bore generate high-speed radial deformation, until mold, cylindric spiral shell of dismantling
Line tubular coil 10 and blank holder 6 take out the housing component of forming hole flanging.
Present embodiment between hole flanging coil turn line, between hole flanging coil and hole flanging coil rack, solenoid coil circle
Apply insulation reinforcing layer 5 between line, between solenoid coil and line solenoid ring framework and guarantees magnetic field impulse to realize insulation
It goes on smoothly.Solenoid coil 10 is cylindric solenoid coil.Present embodiment is using the flange coil of curved form to phase
The cambered shell part answered carries out hole flanging forming (such as Fig. 1), then is corrected shape (such as with school shape coil to the straight wall of hole flanging formation of parts
Fig. 3), the good mold of straight wall is realized, radial clearance is smaller than 0.15mm between straight wall and mold.As shown in Figure 1, hole flanging deforms
Area 2-1 refers to the annular region on the inside of pre-manufactured hole 2-2 to the cambered shell part 2 between the inflection point of hole flanging female die for forming 1.
Cambered shell part localized magnetic impulse flange hole technology principle is as shown in Figure 2.First by mainly by capacitor group 7 and
The electromagnetic forming device that gap switch 8 forms is discharged by hole flanging coil, passes through high-voltage pulse high current in hole flanging coil.
Gap switch 8 is in normally open.When the high-voltage pulse capacitor group 7 for storing electric energy is charged to preset voltage, break
Charge circuit is opened, closed-gap switch 8, then discharge loop is connected, and capacitor group 7 generates decaying concussion pulse through coil discharge
High current and corresponding transient changing magnetic field.According to electromagnetic induction principle, above-mentioned discharge process can cambered shell part (at
Shape part) deformed area generation induced current corresponding with hole flanging coil current.The induced current of deformed area can also generate induction
Magnetic field.Hole flanging coil current magnetic field and induced current magnetic field enhance between coil and curved surface part deformed area, by with induction
The function of current generates the normal direction pulse magnet field force for acting on curved surface part deformed area.Coil is fixed, and hole flanging deformed area exists
The effect of this normal force is lower to occur deformation downwards and movement, until close to mold.With the progress that hole flanging deforms, hole flanging deformed area
It is increasing at a distance between coil, cause deformation force amplitude sharply to decline.Therefore in practical forming process, hole flanging deformed area
The action time of power is very short, and generally tens to several hundred microseconds, it is shaped by inertia thereafter.In this case, just start
Hole flanging deformed area can obtain very high strain rate, thus material can show from it is quasi-static under the conditions of different ess-strain row
Can generally to improve the forming limit of material under conditions of this high-speed shapes.
Since hole flanging deformed area relies primarily on inertia mold, when hole flanging straight wall is more demanding, a magnetic field impulse hole flanging at
Shape cannot be guaranteed good mold effect, as shown in after hole flanging forming in Fig. 2 and in Fig. 3 before the shape of hole flanging school.The straight wall dug
It is in certain inclination angle with hole flanging female die for forming vertical surface, or digs that part is not straight, and mold is poor in the middle part of deformed area, is in hollow drum
Type.Therefore, school shape process is often needed, technological principle is as shown in Figure 3.This step forming is needed using a cylindrical helical
Pipeline circle, or be school shape coil.The technological principle of magnetic field impulse school shape process is similar with aforementioned flanging bore magnetic pulse formation process.
In comparison, difference is that magnetic pulse formation device by school shape coil discharge, flows through pulse high current in the shape coil of school,
Close mold is realized by bulging in hole flanging deformed area under pulse magnet field force effect, school shape effect as Fig. 4 hole flanging school shape after institute
Show.It can be significantly less than the fitting gap directly obtained with punching block hole flanging, the latter with the fitting gap that this method obtains final straight wall
Generally it is greater than 0.3mm.The shape and size of hole flanging coil, general coil surface and hole flanging deformed area are designed according to actual parts
Surface shape as far as possible one, which is shown, guarantees that hole flanging process coil and deformed area gap are uniform.Coil covers hole flanging deformed area as far as possible
Domain.Hole flanging cavity plate and blank holder are designed according to hole flanging part size and shape, require coil to fix during hole flanging.
One step is magnetic field impulse hole flanging molding operation --- assembly relation, charge and discharge forming.
The cambered shell part of processed pre-manufactured hole is placed on hole flanging female die for forming, as shown in Figure 1, housing component flange becomes
Coil is placed in shape area, coil periphery applies blank holder.Apply directional pressure on blank holder, makes flange deformed area exterior annular
Region is limited by blank holder and mold, is not involved in magnetic field impulse hole flanging forming process.Coil, blank holder, pre-manufactured hole and mold are wanted
Axial symmetry is placed, and is distributed to avoid magnetic field impulse load asymmetric.To guarantee that prefabricated bore deformation receives enough pulsed magnetic field masterpieces
With coil turn line region should cover hole flanging deformed area, and have 1-5 circle to be on the inside of pre-manufactured hole.Coil upper surface is applied enough
Axial restraint, to overcome the vertical repulsive force during magnetic field impulse hole flanging.The positive and negative connecting terminal of magnetic pulse formation device with
Two lead of hole flanging form-wound coil is connected.Magnetic pulse formation device generates pulse high current and acts on hole flanging by coil discharge
The normal direction impulse load of deformed area, and then deformed area is deformed and is moved, and is to erect straight wall by cambered shell transfer of shapes.Figure
1 is shown as schematic diagram before hole flanging shapes, and Fig. 2 is shown as schematic diagram after hole flanging forming.Under flanging bore straight wall size higher strip part, dig
Straight wall and mold mold situation are deteriorated, and there is inclination angle therebetween or there are ring uplift phenomenons.
Two steps are the shape operating process of magnetic field impulse hole flanging school: more emat coil, the processing of charge and discharge school shape.
As shown in figure 3, former curve generating coil is replaced with the tubular school shape coil of cylindric helical, for realizing hole flanging straight wall
School shape, improve dimensional accuracy and mold.School shape coil and hole flanging straight wall coaxial-symmetrical are placed.With a step magnetic pulse formation mistake
Journey is similar, and the positive and negative connecting terminal and two lead of hole flanging school shape coil of electromagnetic forming device are connected.Magnetic pulse formation device passes through
Coil discharge generates pulse high current and acts on the radial impulse load of flanging bore straight wall, is allowed to generate high-speed radially change
Shape, and then reduce inclination angle, eliminate protuberance, to realize mold.School shape coil axial length, which should cover, digs straight wall school shape region,
For cylindric solenoid coil, diameter should be slightly smaller than the minimum diameter after the forming of magnetic field impulse hole flanging, radial clearance 1-3mm.Through
After crossing the forming of magnetic field impulse hole flanging and magnetic field impulse school shape, dismantle coil and blank holder take out the cambered shell part of hole flanging, such as Fig. 4 institute
Show.
Specific embodiment 2: present embodiment and specific embodiment one the difference is that: will be electric in step 2
Container group 7 is charged to 1kV-20kV.The induced current of deformed area can also generate induced magnetic field.Coil current magnetic field and induced current
Magnetic field enhances between coil and curved surface part deformed area, and by acting on induced current, generation acts on curved surface part deformation
The normal direction strong pulsed magnetic field power in area, meets the design requirements and the actual needs.It is other same as the specific embodiment one.
Specific embodiment 3: present embodiment and specific embodiment one or two the difference is that: in step 4
Capacitor group 7 is charged to 1kV-20kV.So set, being conducive to generate pulse high current and acting on the diameter of flanging bore straight wall
To impulse load, it is allowed to generate high-speed radial deformation, and then reduce inclination angle, eliminate protuberance, to realize mold.Meet design
It is required that and actual needs.It is other the same as one or two specific embodiments.
Specific embodiment 4: one of present embodiment and specific embodiment one to three the difference is that: step
Four obtained hole flangings are bellmouth, polygonal hole or cylindrical hole.It is more demanding for some pairs of product qualities, or with punching block at
The hole flanging of shape some peculiar parts relatively difficult to achieve shapes, such as bellmouth, polygonal hole, axial hole, can use this implementation
Mode magnetic field impulse method, forming hole flanging is various informative, meets the design requirements and the actual needs.It is other with specific embodiment one to
One of three is identical.
Specific embodiment 5: one of present embodiment and specific embodiment one to four the difference is that: step
Four mold gap is 0.05mm-0.15mm.Pad pasting gap refers to radial clearance between straight wall and hole flanging female die for forming vertical surface,
Meet requirement, solve the problems, such as that mold is sprung back excessive in punching block forming process, can be connection and the assembler of subsequent handling
Sequence is prepared.It is other identical as one of specific embodiment one to four.
Specific embodiment 6: illustrate in conjunction with Fig. 4, present embodiment it is different from one of specific embodiment one to five it
It is in and is greater than 10mm in: the height of the straight wall 2-3 for the flanging bore that step 4 obtains.So set, flanging bore straight wall size compared with
Under the conditions of height, straight wall and mold mold situation are deteriorated, and there is inclination angle therebetween or there are ring uplift phenomenon, are conducive to school
The effective use of shape.It is other identical as one of specific embodiment one to five.
Application example 1:
A kind of subsphaeroidal shell of CuCr bronze alloy material, diameter 500mm, wall thickness 4mm, it is desirable that by its aperture peripheral region
It digs, forms axis perpendicular to the normal direction hole on cambered shell surface, i.e., the annular region between diameter 125mm-210mm is translated into
Height is greater than 3.0mm not less than 32mm, wall thickness, mold gap is not more than the setting straight wall of 0.15mm, to be subsequent handling
Connection and assembly process are prepared.Part hole flanging oral area when with punching block hole flanging is easy cracking, and dimensional accuracy is not high and mold
Radial dimension deviation is greater than 0.15mm, it is difficult to meet requirement, while surface quality is not also high.
Hole flanging, magnetic pulse formation equipment voltage rating and discharge energy difference are carried out using the method for above-mentioned magnetic field impulse hole flanging
For 18kV and 50kJ.Hole flanging forming is carried out in discharge voltage 12kV, discharge voltage corrects shape when being 13kV.
Effect is as follows: mold gap is 0.05-0.12mm, and minimum wall thickness (MINI W.) is greater than 3.2mm, meets requirement, surface matter
The defects of amount is good, non-microcracked and burr, while yield rate is higher, there is a phenomenon where turn over to split.
Application example 2:
Annular region between diameter 100-140mm, is translated into method by the 5A06 flat aluminium alloy plate that initial plate is thickness 4mm
Xiang Kong, die profile radius 10mm.Under the conditions of 2200 microfarad of capacitor, hole flanging forming discharge voltage 2.5kV, straight wall height is obtained
The normal direction hole of 3mm and internal diameter 120mm.
Application example 3:
The 2A19 Sheet Metal Surface melon valve shell of plate thickness 6mm, pre-tension deformation amount 8%.Between diameter 80-120mm
Annular region translate into normal direction hole, die profile radius 10mm.Discharge voltage 13.5kV item is shaped in 300 microfarad of capacitor, hole flanging
Under part, the normal direction hole of straight wall height 5mm and internal diameter 100mm is obtained.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified
For the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention, according to the technical essence of the invention,
Within the spirit and principles in the present invention, any simple modifications, equivalent substitutions and improvements to the above embodiments etc., still
Belong within the protection scope of technical solution of the present invention.
Claims (2)
1. a kind of magnetic field impulse hole flanging formation method of housing component, it is characterised in that: it the following steps are included:
Step 1: designing hole flanging coil according to the subsphaeroidal shell of CuCr bronze alloy material (2) of processed pre-manufactured hole (2-2)
(3) shape；
Step 2: the cambered shell part (2) of processed pre-manufactured hole (2-2) is placed on hole flanging female die for forming (1), cambered shell
The inner surface of part (2) is circumferentially arranged to be had blank holder (6), and hole flanging female die for forming (1) and blank holder (6) are by cambered shell part (2)
It clamps, reserves hole flanging deformed area (2-1), arrange hole flanging coil rack (4) in blank holder (6), hole flanging coil rack (4) winding
There is the hole flanging coil (3) to match with hole flanging deformed area (2-1), hole flanging coil (3) covers and reclines hole flanging deformed area (2-1),
Hole flanging coil (3) and pre-manufactured hole (2-2) are coaxially disposed, and hole flanging coil is by rectangular section copper circle line coiling；By capacitor group (7)
One end is connected with (3) one terminals of hole flanging coil, and the other end of capacitor group (7) is connected with gap switch (8) one end, and gap is opened
The other end for closing (8) is connected with hole flanging coil (3) another terminals, and capacitor group (7) is charged to preset voltage value；
Wherein, the range of hole flanging deformed area (2-1) is 125mm-210mm；
Step 3: disconnecting charge circuit after capacitor group (7) charging, closed-gap switchs (8), then discharge loop is led
Logical, capacitor group (7) generates decaying concussion pulse high current and corresponding transient changing magnetic field through coil discharge, according to
Electromagnetic induction principle, above-mentioned discharge process can generate opposite with hole flanging coil current in the hole flanging deformed area of cambered shell part (2)
The induced current answered, the induced current of hole flanging deformed area can also generate induced magnetic field, hole flanging coil current magnetic field and induced current
Magnetic field enhances between hole flanging coil (3) and hole flanging deformed area (2-1), and by acting on induced current, generation acts on hole flanging
The normal direction pulse magnet field force of deformed area (2-1), since hole flanging coil (3) is fixed, and hole flanging deformed area (2-1) in this method
Lower generation deformation downwards is acted on to power and movement, the transition circle edged surface and vertical surface of the hole flanging female die for forming (1) that instantaneously reclines are formed
To transition circle arc side and straight wall deformation, until deformation force amplitude sharply declines；Hole flanging forming is carried out when discharge voltage 12kV；
Step 4: the hole flanging coil rack (4) of step 3 is replaced with line solenoid ring framework (9), by solenoid coil (10)
It being wrapped on line solenoid ring framework (9), solenoid coil (10) is placed with hole flanging deformed area (2-1) coaxial-symmetrical dug,
One end of capacitor group (7) is connected with cylindric (10) one terminals of solenoid-shaped coil, the other end of capacitor group (7) with
Gap switch (8) one end is connected, the other end and another terminals phase of cylindric solenoid-shaped coil (10) of gap switch (8)
Even, capacitor group (7) is charged to preset voltage value；After capacitor group (7) charging, charge circuit, closure are disconnected
Gap switch (8), then discharge loop is connected, and capacitor group (7) is discharged through cylindric solenoid-shaped coil (10), generates decaying shake
It swings pulse high current and acts on the radial impulse load of the straight wall (2-3) of flanging bore, generate the straight wall (2-3) of flanging bore high
Rate radial deformation, until mold, dismantle cylindric solenoid-shaped coil (10) and blank holder (6) take out the shell of forming hole flanging
Body part；
Discharge voltage corrects shape when being 13kV, and cylindric solenoid-shaped coil (10) axial length, which should cover, digs straight wall school shape
Region, diameter should be slightly smaller than the minimum diameter after the forming of magnetic field impulse hole flanging, and the mold gap of step 4 is 0.05mm-0.12mm,
The height for the flanging bore that step 4 obtains is greater than 3.2mm not less than 32mm, wall thickness.
2. a kind of magnetic field impulse hole flanging formation method of housing component, it is characterised in that: it the following steps are included:
Step 1: turning over a thickness of 2A19 Sheet Metal Surface melon valve shell (2) design of 6mm according to processed pre-manufactured hole (2-2)
The shape of hole coil (3)；
Step 2: the cambered shell part (2) of processed pre-manufactured hole (2-2) is placed on hole flanging female die for forming (1), cambered shell
The inner surface of part (2) is circumferentially arranged to be had blank holder (6), and hole flanging female die for forming (1) and blank holder (6) are by cambered shell part (2)
It clamps, reserves hole flanging deformed area (2-1), arrange hole flanging coil rack (4) in blank holder (6), hole flanging coil rack (4) winding
There is the hole flanging coil (3) to match with hole flanging deformed area (2-1), hole flanging coil (3) covers and reclines hole flanging deformed area (2-1),
Hole flanging coil (3) and pre-manufactured hole (2-2) are coaxially disposed, and hole flanging coil is by rectangular section copper circle line coiling；By capacitor group (7)
One end is connected with (3) one terminals of hole flanging coil, and the other end of capacitor group (7) is connected with gap switch (8) one end, and gap is opened
The other end for closing (8) is connected with hole flanging coil (3) another terminals, and capacitor group (7) is charged to preset voltage value；
Wherein, the range of hole flanging deformed area (2-1) is 80mm-120mm；
Step 3: disconnecting charge circuit after capacitor group (7) charging, closed-gap switchs (8), then discharge loop is led
Logical, capacitor group (7) generates decaying concussion pulse high current and corresponding transient changing magnetic field through coil discharge, according to
Electromagnetic induction principle, above-mentioned discharge process can generate opposite with hole flanging coil current in the hole flanging deformed area of cambered shell part (2)
The induced current answered, the induced current of hole flanging deformed area can also generate induced magnetic field, hole flanging coil current magnetic field and induced current
Magnetic field enhances between hole flanging coil (3) and hole flanging deformed area (2-1), and by acting on induced current, generation acts on hole flanging
The normal direction pulse magnet field force of deformed area (2-1), since hole flanging coil (3) is fixed, and hole flanging deformed area (2-1) in this method
Lower generation deformation downwards is acted on to power and movement, the transition circle edged surface and vertical surface of the hole flanging female die for forming (1) that instantaneously reclines are formed
To transition circle arc side and straight wall deformation, until deformation force amplitude sharply declines；When discharge voltage 13.5kV carry out hole flanging at
Shape；
Step 4: the hole flanging coil rack (4) of step 3 is replaced with line solenoid ring framework (9), by solenoid coil (10)
It being wrapped on line solenoid ring framework (9), solenoid coil (10) is placed with hole flanging deformed area (2-1) coaxial-symmetrical dug,
One end of capacitor group (7) is connected with cylindric (10) one terminals of solenoid-shaped coil, the other end of capacitor group (7) with
Gap switch (8) one end is connected, the other end and another terminals phase of cylindric solenoid-shaped coil (10) of gap switch (8)
Even, capacitor group (7) is charged to preset voltage value；After capacitor group (7) charging, charge circuit, closure are disconnected
Gap switch (8), then discharge loop is connected, and capacitor group (7) is discharged through cylindric solenoid-shaped coil (10), generates decaying shake
It swings pulse high current and acts on the radial impulse load of the straight wall (2-3) of flanging bore, generate the straight wall (2-3) of flanging bore high
Rate radial deformation, until mold, dismantle cylindric solenoid-shaped coil (10) and blank holder (6) take out the shell of forming hole flanging
Body part；
Cylindric solenoid-shaped coil (10) axial length, which should cover, digs straight wall school shape region, and diameter should be slightly smaller than magnetic field impulse and turn over
Minimum diameter after the forming of hole, the normal direction hole of straight wall height 5mm and internal diameter 100mm that step 4 obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808481.8A CN106270104B (en) | 2016-09-07 | 2016-09-07 | A kind of magnetic field impulse hole flanging formation method of housing component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808481.8A CN106270104B (en) | 2016-09-07 | 2016-09-07 | A kind of magnetic field impulse hole flanging formation method of housing component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106270104A CN106270104A (en) | 2017-01-04 |
| CN106270104B true CN106270104B (en) | 2019-09-17 |
Family
ID=57711218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610808481.8A Active CN106270104B (en) | 2016-09-07 | 2016-09-07 | A kind of magnetic field impulse hole flanging formation method of housing component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106270104B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964684B (en) * | 2017-03-31 | 2019-05-31 | 华中科技大学 | A kind of complex multi-step local plastic electromagnetic forming method suitable for sheet material workpiece |
| CN107116128B (en) * | 2017-06-05 | 2019-09-24 | 三峡大学 | A kind of the plate electromagnetism hemmer and method of axial direction-radial electromagnetic force timesharing load |
| CN107138588B (en) * | 2017-06-09 | 2018-08-21 | 华中科技大学 | A kind of band pre-manufactured hole tubing electromagnetism side flanging device and method |
| CN107138589B (en) * | 2017-06-19 | 2021-04-23 | 中南大学 | Plate hole flanging forming device and forming method |
| CN107138590B (en) * | 2017-06-19 | 2019-03-12 | 中南大学 | A kind of device and method using the driving plate hole flanging forming of multidirectional magnetic field force |
| CN112719087B (en) * | 2020-12-31 | 2023-01-03 | 苏州海陆重工股份有限公司 | Forming method for upper outlet of nuclear power hanging basket barrel |
| CN115245977B (en) * | 2021-04-26 | 2024-05-24 | 哈尔滨工业大学 | Auxiliary device and method for local electromagnetic forming of curved surface shell piece |
| CN114192651B (en) * | 2021-11-19 | 2023-09-05 | 上海航天精密机械研究所 | Small-diameter hole flanging forming method for titanium alloy curved surface shell |
| CN114770132B (en) * | 2022-06-21 | 2022-10-14 | 四川航天长征装备制造有限公司 | High-strength aluminum alloy melon petal side hole electromagnetic flanging device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386042A (en) * | 2008-08-15 | 2009-03-18 | 哈尔滨工业大学 | Method for increasing the circular degree of the metal thin-walled cylinder using pulse magnetic pressure |
| CN103861930A (en) * | 2014-04-01 | 2014-06-18 | 哈尔滨工业大学 | Device and method for forming small-diameter flanging holes in aluminum alloy plate through magnetic pulses |
| CN105583278A (en) * | 2014-10-23 | 2016-05-18 | 首都航天机械公司 | Method for forming horn-mouth-shaped flanged hole in top cap of carrier rocket storage tank |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000076685A1 (en) * | 1999-06-14 | 2000-12-21 | Pulsar Welding Ltd. | Electromagnetic and/or electrohydraulic forming of a metal plate |
| CN102248059B (en) * | 2011-06-16 | 2013-07-24 | 华中科技大学 | Multistage and multidirectional electromagnetic forming method and device |
| CN102259132A (en) * | 2011-07-08 | 2011-11-30 | 哈尔滨工业大学 | Method and equipment for forming plate material by electromagnetic force driving and mold pressing |
| CN103658297B (en) * | 2013-09-13 | 2016-01-20 | 华中科技大学 | The progressive drawing forming method of electromagnetic pulse assisted and device |
| CN204503910U (en) * | 2015-02-10 | 2015-07-29 | 江苏财经职业技术学院 | Aluminium alloy cylindrical member magnetic field impulse assists drawing and forming device |
-
2016
- 2016-09-07 CN CN201610808481.8A patent/CN106270104B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386042A (en) * | 2008-08-15 | 2009-03-18 | 哈尔滨工业大学 | Method for increasing the circular degree of the metal thin-walled cylinder using pulse magnetic pressure |
| CN103861930A (en) * | 2014-04-01 | 2014-06-18 | 哈尔滨工业大学 | Device and method for forming small-diameter flanging holes in aluminum alloy plate through magnetic pulses |
| CN105583278A (en) * | 2014-10-23 | 2016-05-18 | 首都航天机械公司 | Method for forming horn-mouth-shaped flanged hole in top cap of carrier rocket storage tank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106270104A (en) | 2017-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106270104B (en) | A kind of magnetic field impulse hole flanging formation method of housing component | |
| CN111633103B (en) | Electro-hydraulic-electromagnetic composite forming system and forming method | |
| CN106694681B (en) | A kind of electromagnetic forming device and method of metal tube | |
| CN106944527B (en) | A kind of pipe forming device and method based on electromagnetic attraction | |
| CN107413916B (en) | A kind of tubing Electromagnetic bulging forming device and method | |
| CN110193546B (en) | Device and method for forming metal plate by single-power-supply single-coil electromagnetic attraction | |
| CN107030172A (en) | A kind of electromagnetic casting method and device based on tubing under background magnetic field | |
| CN109731982B (en) | Self-resistance heating electromagnetic forming method for hollow component with complex section made of difficult-to-deform material | |
| CN107139517B (en) | A kind of drawing and forming device and method of the non-axisymmetric parts of difficult-to-deformation material | |
| CN110102608B (en) | Forming device and method for high-precision U-shaped bending of sheet material | |
| CN107138590B (en) | A kind of device and method using the driving plate hole flanging forming of multidirectional magnetic field force | |
| CN110000269A (en) | A kind of tubing local feature electro-hydraulic forming device and its manufacturing process | |
| CN111842610B (en) | Electromagnetic drive-electrohydraulic pipe fitting forming device and method | |
| CN109967593A (en) | A kind of device and method for realizing that pipe fitting Electromagnetic bulging is compressed axially using radially constant magnetic field and inductive loop | |
| CN109201842A (en) | A kind of tee tube electromagnetic pulse Compound Forming of Bulging device and expanding method | |
| CN102172757B (en) | Hole-reaming forming technology for internal and external specially-shaped surfaces | |
| CN207577198U (en) | A kind of non-contact flaring of pipe fitting that need not be placed in inside pipe fitting or hemmer | |
| Xiong et al. | A dual-coil method for electromagnetic attraction forming of sheet metals | |
| CN209664052U (en) | A kind of electromagnetism orthopedic appliance | |
| CN110899451A (en) | Method and device for forming flange hole in integral box bottom of carrier rocket storage box | |
| CN201359923Y (en) | Mould for producing ultra microcrystal voltage transformer iron core | |
| CN107774780B (en) | Pipe fitting non-contact flanging method and device without arranging pipe fitting inside | |
| CN207414038U (en) | A kind of aluminum section extruder die sleeve | |
| CN108080482B (en) | A kind of ladder-like cylindrical member producing device and method based on multidirectional magnetic field power drive | |
| WO2022198768A1 (en) | Precise forming apparatus and method for miniature metal device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170628 Address after: 150001 Harbin, Nangang, West District, large straight street, No. 92 Applicant after: Harbin Institute of Technology Applicant after: Xi'an Space Engine Factory Address before: 150001 Harbin, Nangang, West District, large straight street, No. 92 Applicant before: Harbin Institute of Technology |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |