CN109570364B - Electric field auxiliary forming die for ultrahigh-strength multi-channel bent part - Google Patents
Electric field auxiliary forming die for ultrahigh-strength multi-channel bent part Download PDFInfo
- Publication number
- CN109570364B CN109570364B CN201910072814.9A CN201910072814A CN109570364B CN 109570364 B CN109570364 B CN 109570364B CN 201910072814 A CN201910072814 A CN 201910072814A CN 109570364 B CN109570364 B CN 109570364B
- Authority
- CN
- China
- Prior art keywords
- die
- bending
- male die
- electric field
- fixing plate
- 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
- 230000005684 electric field Effects 0.000 title claims abstract description 54
- 238000005452 bending Methods 0.000 claims abstract description 88
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 238000010304 firing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 53
- 230000008569 process Effects 0.000 abstract description 50
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
Images
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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses an electric field auxiliary forming die for an ultrahigh-strength multi-channel bending piece, which comprises an upper die base and a lower die base, wherein a guide pillar is arranged on the lower die base, and the upper die base is connected with the guide pillar in a sliding manner through a guide sleeve; the upper die base, the bending male die, the backing plate, the edge pressing block and the like form an upper die of the die, three positive electrodes are arranged on the bending male die, and an insulating sleeve is arranged on the outer surface of the bending male die; two negative electrodes are respectively arranged on the two metal edge pressing blocks and the bending female die and are simultaneously provided with insulating sleeves, and the electrodes are both connected with a power supply; the lower die base, the bending female die and the like form a lower die of the die, and meanwhile, a positive electrode and a negative electrode form a loop in the bending process. The bending forming process mainly improves the existing plate bending forming process, changes the corresponding structure on the basis of the existing stamping die, combines the structure with an external electric field, and solves the problems of large resilience, difficult bending and the like in the bending process of the ultrahigh-strength plate; the bending forming characteristic of the die is improved, so that the die meets the forming requirement of a bent workpiece, and the service life of the die is prolonged.
Description
Technical Field
The invention relates to the technical field of forming dies, in particular to an electric field auxiliary forming die for an ultrahigh-strength multi-channel bent part.
Background
The bending forming is a process of making a plate material or an annular blank into a required bent shape by using a bending die under the pressure action of a press machine. The method is one of basic stamping processes, and can be used for processing thin-wall parts and annular parts with various complex shapes; the dimensions of the curved parts are also varied and they are widely used in automobiles, airplanes, tractors, motorcycles, clocks, electrical appliances, instruments, light industry, military and civilian products. In the actual bending forming process, the phenomena of inner side instability and wrinkling, severe bending resilience, poor forming performance and the like can occur, and the surface quality, hardness, strength, toughness, service life and other properties of the workpiece can be affected to different degrees as a result. Especially, the ultra-high strength thin plate material is more difficult to bend and the phenomenon of bending rebound is more serious compared with other traditional materials. The ultrahigh-strength material has higher strength but poorer plasticity, so that a series of problems of incapability of bending, serious resilience, poorer precision and the like can be caused by adopting a common stamping die. In a general stamping process, the tensile stress generated by tensile deformation of a neutral layer is reduced or the material stress distribution in a deformation area is changed, so that the tensile stress is reduced, the phenomenon of thinning the outer side wall is reduced by a method of enhancing the compressive stress, and the phenomenon of bending and rebounding can be corrected only by a large amount of experiments and reasonable empirical data. The bending springback phenomenon is always an unavoidable problem of the traditional bending die, and particularly, materials with large elastic modulus are more difficult to bend and form, so that the precision and the quality of products are affected, and the technical problem is formed. In summary, how to solve the quality and precision problems of the ultra-high strength bending piece products has become a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide an electric field auxiliary forming die for an ultrahigh-strength multi-channel bent part, which aims to solve the problems that an ultrahigh-strength thin plate is serious in rebound phenomenon and difficult to bend in the bending process.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an electric field auxiliary forming die for an ultrahigh-strength multi-channel bent part, which comprises an upper die holder and a lower die holder, wherein the lower die holder is provided with at least two guide pillars, and the upper die holder is in sliding connection with the guide pillars through correspondingly arranged guide sleeves;
a die handle is embedded above the upper die base, and a male die base plate is fixed below the upper die base; the bottom end of the male die base plate is connected with a male die fixing plate used for fixing a bending male die and a discharging screw, the center of a working contact surface of the bending male die is sleeved with three positive electrodes, and the front surfaces of the positive electrodes are provided with binding post anodes of an external power supply live wire; the discharging screws with springs sleeved on the peripheries are fixed on the edges of two sides of the bottom end of the male die fixing plate, and metal edge pressing blocks are fixedly connected to the bottom ends of the discharging screws; the center of the lower surface of the metal edge pressing block, which is contacted with the workpiece, is sleeved with a negative electrode, and the front surface of the negative electrode is provided with a zero line externally connected with a power supply;
the top of the lower die holder is sequentially fixed with a female die base plate, a female die fixing plate and a bending female die, two negative electrodes are sleeved at the center of a working contact surface of the bending female die, and the front surfaces of the negative electrodes are provided with binding post cathodes externally connected with a power supply zero line.
Preferably, the top fixing part and the working part of the bending male die are arranged in a step shape, an insulating sleeve is sleeved outside a positive electrode arranged on the lower surface of the bending male die, which is in contact with a workpiece, and the positive electrode and the insulating sleeve are in interference fit; the front surface of the bending male die is provided with three round holes connected with the positive pole of the binding post.
Preferably, the male die fixing plate is provided with a groove corresponding to the bending male die, and the upper die base and the fixed base plate, the fixed base plate and the male die fixing plate and the bending male die are fastened by bolts or screws; the front surface of the male die fixing plate is provided with three round holes corresponding to the round holes on the front surface of the bending male die, and the three round holes on the front surface of the male die fixing plate are used for placing a male die firing line.
Preferably, an insulating sleeve is sleeved outside a negative electrode sleeved at the center of the lower surface of the metal edge pressing block, which is in contact with the workpiece, the negative electrode and the insulating sleeve are in interference fit, and a round hole connected with the negative electrode of the binding post is formed in the front surface of the metal edge pressing block.
Preferably, the bottom fixing part and the working part of the bending female die are arranged in a step shape, two negative electrodes sleeved at the center of the contact surface of the bending female die and the workpiece are sleeved with insulating sleeves, and the negative electrodes and the insulating sleeves are in interference fit; and the front surface of the bending female die is provided with two round holes connected with the negative pole of the binding post.
Preferably, a groove corresponding to the bending die is formed in the die fixing plate, two round holes are formed in the front surface of the die fixing plate, the positions of the two round holes correspond to the positions of the two round holes in the front surface of the bending die, and the two round holes are used for placing a die zero line.
Preferably, a material baffle plate is arranged at one side, located on the female die fixing plate, of the top end of the lower die base.
Compared with the prior art, the invention has the following technical effects:
the electric field auxiliary forming die for the ultrahigh-strength multi-channel bent part overcomes the bending forming limitation of ultrahigh-strength materials, and combines the traditional stamping die with an electric field; the blank is directly heated by joule resistance heat generated by current flowing through the ultrahigh-strength blank, the temperature of the blank is kept within a forming temperature range, the blank is plastically deformed in a die, the internal temperature of the blank is very uniformly distributed, and the current distribution of a workpiece is stable and uniform by arranging a plurality of electrodes, so that the plastic forming of the blank is facilitated, and the product quality is improved; meanwhile, the defects of bending cracks, serious rebound phenomenon and the like in the traditional bending forming process can be effectively reduced. In addition, the bending device provided by the invention has the characteristics of strong insulativity, simple structure, high forming efficiency, low energy consumption, stable product quality and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a three-dimensional schematic view of one direction of the electric field assisted forming process and die design for an ultra-high strength multi-pass curved part of the present invention;
FIG. 2 is a three-dimensional schematic view of another direction of the electric field assisted forming process and die design for an ultra-high strength multi-pass curved part of the present invention;
FIG. 3 is a schematic perspective view of a mold shank for use in the electric field assisted forming process and mold design of an ultra-high strength multi-pass curved part of the present invention;
FIG. 4 is a schematic perspective view of an upper die holder in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part according to the present invention;
FIG. 5 is a schematic perspective view of a male die plate in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part of the present invention;
FIG. 6 is a schematic perspective view of a convex mold fixing plate in the electric field assisted forming process and mold design of the ultra-high strength multi-pass bent part of the present invention;
FIG. 7 is a schematic perspective view of a metallic compact and its electrode assembly in the electric field assisted forming process and mold design of the ultra-high strength multi-pass curved part of the present invention;
FIG. 8 is a schematic perspective view of a female mold holding plate in the electric field assisted forming process and mold design of an ultra-high strength multi-pass curved part of the present invention;
FIG. 9 is a schematic perspective view of a female die plate in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part according to the present invention;
FIG. 10 is a schematic perspective view of an electric field assisted forming process and a lower die holder in a die design for an ultra-high strength multi-pass bent part according to the present invention;
FIG. 11 is a schematic perspective view of a bending punch and its electrode assembly in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part of the present invention;
FIG. 12 is a schematic perspective view of a retainer plate in the electric field assisted forming process and die design of the ultra-high strength multi-pass curved part of the present invention;
FIG. 13 is a schematic perspective view of a bending die and its electrode assembly in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part according to the present invention;
FIG. 14 is a perspective view of the guide posts in the electric field assisted forming process and die design of the ultra-high strength multi-pass curved part of the present invention;
FIG. 15 is a perspective view of a spring in an electric field assisted forming process and die design for an ultra-high strength multi-pass curved part of the present invention;
FIG. 16 is a schematic perspective view of a discharge screw in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part of the present invention;
FIG. 17 is a schematic perspective view of the guide sleeve in the electric field assisted forming process and die design of the ultra-high strength multi-pass curved part of the present invention;
in the figure: 1. a die shank; 2. an upper die holder; 3. a male die backing plate; 4. a male die fixing plate; 4.1, firing line; 5. a metal edge pressing block; 5-1, zero line; 5-2, insulating sleeve; 5-3, a negative electrode; 6. fixing a female die plate; 6.1, a zero line; 7. a die base plate; 8. a lower die holder; 9. bending the male die; 9.1, an insulating sleeve; 9-2, a positive electrode; 10. a striker plate; 11. bending the female die; 11-1, an insulating sleeve; 11-2 negative electrodes; 12. a guide post; 13. a spring; 14. a discharge screw; 15. and (4) guiding a sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an electric field auxiliary forming die for an ultrahigh-strength multi-channel bent part, which aims to solve the problems that an ultrahigh-strength thin plate is serious in rebound phenomenon and difficult to bend in the bending process.
Based on the electric field auxiliary forming die for the ultrahigh-strength multi-channel bent part, the electric field auxiliary forming die comprises an upper die holder and a lower die holder, wherein the lower die holder is provided with at least two guide pillars, and the upper die holder is in sliding connection with the guide pillars through correspondingly arranged guide sleeves; a die handle is embedded above the upper die base, and a convex die base plate is fixed below the upper die base; the bottom end of the male die base plate is connected with a male die fixing plate used for fixing a bending male die and a discharging screw, the center of the working contact surface of the bending male die is sleeved with three positive electrodes, and the front surface of each positive electrode is provided with a binding post positive electrode of an external power supply live wire; the discharging screws with springs sleeved on the peripheries are fixed on the edges of two sides of the bottom end of the male die fixing plate, and the bottom ends of the discharging screws are fixedly connected with metal edge pressing blocks; the center of the lower surface of the metal edge pressing block, which is contacted with the workpiece, is sleeved with a negative electrode, and the front surface of the negative electrode is provided with a zero line externally connected with a power supply; the top of the lower die holder is sequentially fixed with a female die backing plate, a female die fixing plate and a bending female die, two negative electrodes are sleeved at the center of the working contact surface of the bending female die, and the front surfaces of the negative electrodes are provided with binding post cathodes externally connected with a power supply zero line.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-17, fig. 1 is a three-dimensional schematic view showing one direction of the electric field assisted forming process and the mold design of the ultra-high strength multi-pass bending member of the present invention; FIG. 2 is a three-dimensional schematic view of another direction of the electric field assisted forming process and die design for an ultra-high strength multi-pass curved part of the present invention; FIG. 3 is a schematic perspective view of a mold shank for use in the electric field assisted forming process and mold design of an ultra-high strength multi-pass curved part of the present invention; FIG. 4 is a schematic perspective view of an upper die holder in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part according to the present invention; FIG. 5 is a schematic perspective view of a male die plate in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part of the present invention; FIG. 6 is a schematic perspective view of a convex mold fixing plate in the electric field assisted forming process and mold design of the ultra-high strength multi-pass bent part of the present invention; FIG. 7 is a schematic perspective view of a metallic compact and its electrode assembly in the electric field assisted forming process and mold design of the ultra-high strength multi-pass curved part of the present invention; FIG. 8 is a schematic perspective view of a female mold holding plate in the electric field assisted forming process and mold design of an ultra-high strength multi-pass curved part of the present invention; FIG. 9 is a schematic perspective view of a female die plate in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part according to the present invention; FIG. 10 is a schematic perspective view of an electric field assisted forming process and a lower die holder in a die design for an ultra-high strength multi-pass bent part according to the present invention; FIG. 11 is a schematic perspective view of a bending punch and its electrode assembly in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part of the present invention; FIG. 12 is a schematic perspective view of a retainer plate in the electric field assisted forming process and die design of the ultra-high strength multi-pass curved part of the present invention; FIG. 13 is a schematic perspective view of a bending die and its electrode assembly in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part according to the present invention; FIG. 14 is a perspective view of the guide posts in the electric field assisted forming process and die design of the ultra-high strength multi-pass curved part of the present invention; FIG. 15 is a perspective view of a spring in an electric field assisted forming process and die design for an ultra-high strength multi-pass curved part of the present invention; FIG. 16 is a schematic perspective view of a discharge screw in the electric field assisted forming process and die design of an ultra-high strength multi-pass curved part of the present invention; fig. 17 is a perspective view of the guide sleeve in the electric field assisted forming process and the die design of the ultra-high strength multi-pass bending member of the present invention.
As shown in fig. 1 to 17, the invention provides an electric field auxiliary forming die for an ultrahigh-strength multi-channel bent part, which comprises an upper die holder 2 and a lower die holder 8, wherein a guide mechanism is arranged between the upper die holder 2 and the lower die holder 8, the guide mechanism comprises a die holder guide sleeve 15 arranged on the upper die holder 2 and a die holder guide post 12 arranged on the lower die holder 8, the die holder guide post 12 is embedded in the die holder guide sleeve 15, and the die holder guide sleeve 15 can slide along the axial direction of the die holder guide post 12, so that the upper die holder 2 can vertically move along the direction of the lower die holder 8. The upper part of the upper die holder 2 is embedded with a die handle 1 device, as shown in figure 3.
A convex die backing plate 3 is arranged below the upper die holder 2 to prevent the upper die holder from being damaged due to overlarge stress in the working process; the periphery of the punch backing plate 3 is provided with six threaded holes for fastening the punch backing plate with the upper die base 2 and the punch retainer 4, as shown in fig. 5. A male die fixing plate 4 is arranged below the male die base plate 3, and a step-shaped groove is formed in the center of the male die fixing plate 4 and used for fixing a bending male die 9; four through holes are arranged around the discharging screw 14; six threaded holes are formed for fixing the male die base plate 3 and the upper die base 2; a round hole corresponding to the bending male die 9 is arranged on the front surface of the bending male die and is used for connecting the positive pole of the binding post of the external power supply live wire 4-1, as shown in figure 6. The male die fixing plate 4, the male die base plate 3 and the upper die frame 2 are connected through screws and bolts, and positioning pins are preferably arranged at two ends of the male die base plate 3, so that the positioning is convenient. A bending male die 9, four discharging screws 14 and four springs 13 are arranged below the male die fixing plate 4; the bending male die 9 is arranged in a step shape and is used for fastening with the male die fixing plate 4; three round holes with certain depth are arranged on the lower surface of the workpiece, which is in contact with the workpiece, and are used for placing the positive electrodes 9-2, meanwhile, an insulating sleeve 9-1 is sleeved outside each positive electrode 9-2 and is used for isolating the positive electrode 9-2 from the inner surface of the bending male die 9 and ensuring that current flows only when the deformation is severe, and the positive electrode 9-2 and the insulating sleeve 9-1 are in interference fit; the front surface is simultaneously provided with three round holes with certain depth for connecting the positive pole of a binding post of an external power supply live wire 4-1; the front surface and the lower surface of the bending male die 9 are penetrated by two circular holes with certain depth, as shown in fig. 11; the periphery of the four discharging screws 14 is sleeved with four springs 13 for compressing and resetting.
Two metal pressing blocks 5 are arranged below the four discharging screws 14, and have the function of pressing edges of the workpiece to prevent the workpiece from warping in the deformation process; two threaded holes are formed in the thickness direction of each metal pressing block 5 and used for fixing the discharging screws 14; meanwhile, a round hole with a certain depth is arranged on the lower surface, which is in contact with a workpiece, in the thickness direction of the round hole and is used for placing negative electrodes 5-3, an insulating sleeve 5-2 is sleeved outside each negative electrode 5-3 and is used for isolating the negative electrode 5-3 from the inner surface of the metal pressing block 5 and ensuring that current flows when the metal pressing block deforms, and the negative electrode 5-3 and the insulating sleeve are in interference fit; a round hole with a certain depth connected with the negative pole of a binding post of an external power supply zero line 5-1 is arranged on the front surface of the metal pressing block 5; the front surface and the lower surface of the metal compact 5 are penetrated by two round holes with certain depth, as shown in fig. 7.
A bending female die 11, a female die fixing plate 6, a female die backing plate 7 and a striker plate 10 are arranged below the metal edge pressing block 5. The bending female die 11 is arranged in a step shape and is used for fastening with the female die fixing plate 6; two round holes with certain depth are arranged on the upper surface of the negative electrode 11-2, which is contacted with a workpiece, and are used for placing the negative electrodes 11-2, meanwhile, an insulating sleeve 11-1 is sleeved outside each negative electrode 11-2 and is used for isolating the negative electrode 11-2 from the inner surface of the bent concave die 11, so that current can only flow through the negative electrode 11-2 when the negative electrode is severely deformed, and the negative electrode 11-2 and the insulating sleeve 11-1 are in interference fit; the front surface is simultaneously provided with two round holes with certain depth for connecting the negative pole of a binding post of an external power supply zero line 6-1; the front surface of the bending die is penetrated by two circular holes with certain depth on the upper surface, as shown in fig. 13.
A step-shaped groove is formed in the center of the female die fixing plate 6 and used for fixing the bending female die 11; six threaded holes are formed in the periphery of the die base plate and used for fixing the die base plate 7 and the lower die base 8; two threaded holes are formed in the side surface of the die fixing plate 6 and used for fixing the striker plate 10, as shown in fig. 8. A female die backing plate 7 is arranged below the female die fixing plate 6 to prevent the lower die holder 8 from being damaged due to overlarge stress in the working process; the periphery of the die base plate 7 in the thickness direction is provided with six threaded holes which are used for fastening with the lower die holder 8 and the die fixing plate 6; two threaded holes are formed in the side surface, i.e., in the length direction, of the striker plate for fixing the striker plate 10, as shown in fig. 9. The striker plate 10 is provided with four through holes in the thickness direction and is used for fixing the striker plate with the female die base plate 7 and the female die fixing plate 6; the striker plate 10 functions to position and space the sheet as shown in fig. 12.
A lower die holder 8 is arranged below the striker plate 10 and the die backing plate 7, and six through holes corresponding to the die backing plate 7 and the die fixing plate 6 are formed in the thickness direction of the lower die holder 8 and are used for being connected with the die backing plate 7 and the die fixing plate 6, as shown in fig. 10. The lower die base 8 and the die backing plate 7 are fastened and connected through screws, the die fixing plate 6, the die backing plate 7 and the striker plate 10 are fastened and connected through screws, and two positioning pins are preferably arranged between the die backing plate 7 and the lower die base 8 for positioning.
The working process of the electric field assisted forming die of the ultrahigh-strength multi-channel bent part of the embodiment is approximately as follows:
the electric field auxiliary forming die for the ultrahigh-strength multi-channel bent part is initially in a die opening state and is arranged on a common press. The power live wire 4-1 of the positive electrode 9-2 of the external binding post and the power zero wires 5-1 and 6-1 of the negative electrodes 5-3 and 11-2 of the external binding post are in an open state.
Manually placing the blank on the female die fixing plate 6 until the blank is propped against the striker plate 10, and starting the press; the upper die holder 2 moves downwards along with the press, the die holder guide sleeve 15 slides axially along the die holder guide post 12, the negative electrode 5-3 of the metal edge pressing block 5 contacts with the blank before the blank, and no electric field is involved in the process. Along with the descending of the upper die, a positive electrode 9-2 in the bending male die 9 is in contact with the blank, at the moment, the blank enters a bending state, six sections of electric loops are formed, current flows through the sheet from the positive electrode 9-2, and finally flows out from two metal pressing blocks 5 and negative electrodes 5-3 and 11-2 of the bending female die 11. Until the bending male die 9 descends to the lowest point, and the obtained finished piece is a multi-channel bending piece with a blank holder. And after the bending is finished, the upper die is lifted back, and the workpiece is taken out manually. Thus completing the primary blanking and bending work.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (4)
1. An electric field auxiliary forming die of bent piece of superhigh strength multichannel which characterized in that: the die comprises an upper die holder and a lower die holder, wherein the lower die holder is provided with at least two guide pillars, and the upper die holder is in sliding connection with the guide pillars through correspondingly arranged guide sleeves;
a die handle is embedded above the upper die base, and a male die base plate is fixed below the upper die base; the bottom end of the male die base plate is connected with a male die fixing plate used for fixing a bending male die and a discharging screw, the center of a working contact surface of the bending male die is sleeved with three positive electrodes, and the front surfaces of the positive electrodes are provided with binding post anodes of an external power supply live wire; the discharging screws with springs sleeved on the peripheries are fixed on the edges of two sides of the bottom end of the male die fixing plate, and metal edge pressing blocks are fixedly connected to the bottom ends of the discharging screws; the center of the lower surface of the metal edge pressing block, which is contacted with the workpiece, is sleeved with a negative electrode, and the front surface of the negative electrode is provided with a zero line externally connected with a power supply;
the top of the lower die holder is sequentially fixed with a female die base plate, a female die fixing plate and a bending female die, two negative electrodes are sleeved at the center of a working contact surface of the bending female die, and the front surfaces of the negative electrodes are provided with binding post cathodes externally connected with a power supply zero line;
an insulating sleeve is sleeved outside a negative electrode which is sleeved at the center of the lower surface of the metal edge pressing block, which is in contact with the workpiece, the negative electrode and the insulating sleeve are in interference fit, and a round hole which is connected with the negative electrode of the binding post is arranged on the front surface of the metal edge pressing block; the bottom fixing part and the working part of the bending female die are arranged in a step shape, two negative electrodes sleeved at the center of the contact surface of the bending female die and the workpiece are sleeved with insulating sleeves, and the negative electrodes and the insulating sleeves are in interference fit; the front surface of the bending female die is provided with two round holes connected with the negative pole of the binding post; the die fixing plate is provided with a groove corresponding to the bending die, the front surface of the die fixing plate is provided with two round holes, the positions of the two round holes correspond to the positions of the two round holes on the front surface of the bending die, and the two round holes are used for placing a zero line.
2. The electric field assisted forming die for the ultra-high strength multi-channel curved article of claim 1, wherein: the top fixing part and the working part of the bending male die are arranged in a step shape, an insulating sleeve is sleeved outside a positive electrode arranged on the lower surface of the bending male die, which is in contact with a workpiece, and the positive electrode and the insulating sleeve are in interference fit; the front surface of the bending male die is provided with three round holes connected with the positive pole of the binding post.
3. The electric field assisted forming die for the ultra-high strength multi-channel curved article of claim 2, wherein: the male die fixing plate is provided with a groove corresponding to the bending male die, and the upper die base and the male die backing plate, the male die backing plate and the male die fixing plate and the bending male die are fastened by bolts or screws; the front surface of the male die fixing plate is provided with three round holes corresponding to the round holes on the front surface of the bending male die, and the three round holes on the front surface of the male die fixing plate are used for placing a firing line.
4. The electric field assisted forming die for the ultra-high strength multi-channel curved article of claim 1, wherein: and a material baffle plate is arranged at one side of the top end of the lower die base, which is positioned on the female die fixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072814.9A CN109570364B (en) | 2019-01-25 | 2019-01-25 | Electric field auxiliary forming die for ultrahigh-strength multi-channel bent part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072814.9A CN109570364B (en) | 2019-01-25 | 2019-01-25 | Electric field auxiliary forming die for ultrahigh-strength multi-channel bent part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109570364A CN109570364A (en) | 2019-04-05 |
| CN109570364B true CN109570364B (en) | 2020-04-07 |
Family
ID=65918036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910072814.9A Active CN109570364B (en) | 2019-01-25 | 2019-01-25 | Electric field auxiliary forming die for ultrahigh-strength multi-channel bent part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109570364B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640009B (en) * | 2019-09-24 | 2021-03-02 | 燕山大学 | Electric field auxiliary deep drawing device for hard-to-deform metal plate |
| CN110756652A (en) * | 2019-10-12 | 2020-02-07 | 安徽机电职业技术学院 | Electrical installation rail bending machine |
| CN111531010B (en) * | 2020-04-16 | 2021-03-26 | 燕山大学 | Supplementary deep-drawing device of notch cuttype spare electric field |
| CN111974853B (en) * | 2020-07-01 | 2022-10-28 | 燕山大学 | Positive dress formula aperture flanging dies under electric field effect |
| US11717872B2 (en) * | 2020-10-07 | 2023-08-08 | United States Of America, As Represented By The Secretary Of The Navy | Stamping device for sheet-metal ammunition tray |
| CN114433669B (en) * | 2022-03-02 | 2022-10-28 | 燕山大学 | Forming die for inhibiting bending resilience of plate and forming method thereof |
| CN114653807B (en) * | 2022-03-08 | 2023-05-16 | 北京航空航天大学 | Method and device for testing forming limit of high-strength ultrathin plate strip under action of current field |
| CN117772880B (en) * | 2024-02-26 | 2024-05-14 | 合肥工业大学 | Dot matrix voltage-conducting edge forming process for electric auxiliary forming |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07155856A (en) * | 1993-12-01 | 1995-06-20 | Honda Motor Co Ltd | Forming equipment for metallic sheet |
| JPH07303919A (en) * | 1994-05-16 | 1995-11-21 | Honda Motor Co Ltd | Method for removing residual strain |
| RU2377071C2 (en) * | 2007-08-29 | 2009-12-27 | ЗАО "Кондор-Эко" | Method of production of elements of collecting electrodes for electrical precipitator |
| CN103624142A (en) * | 2013-11-17 | 2014-03-12 | 保定金阳光能源装备科技有限公司 | Manufacturing technology and equipment of lead-acid battery continuous curved plate grid |
| JP2015051458A (en) * | 2013-08-07 | 2015-03-19 | 淡路鉄工株式会社 | Method and apparatus for production of corrugated steel sheet for building material |
| CN104525746A (en) * | 2015-01-06 | 2015-04-22 | 哈尔滨工业大学（威海） | Rapid heating and forming integrated device and method |
| CN204523993U (en) * | 2015-01-26 | 2015-08-05 | 计颖 | A kind of heat sink bending die |
| CN106563715A (en) * | 2016-11-03 | 2017-04-19 | 山东大学 | Panel veneer electroplastic multifunctional V-shaped bending die and system |
| CN207127094U (en) * | 2017-07-28 | 2018-03-23 | 洛阳高科钼钨材料有限公司 | A kind of molybdenum matter corrugated plating punch-forming mold |
| CN108160823A (en) * | 2017-12-26 | 2018-06-15 | 重庆江东机械有限责任公司 | For the mold system of processing of heat stamping and shaping sketch plate |
| CN108160795A (en) * | 2017-12-22 | 2018-06-15 | 天津职业技术师范大学 | For the hydraulic device of aluminium alloy forming |
| CN108160824A (en) * | 2018-01-22 | 2018-06-15 | 燕山大学 | Without flanged cylinder part Drawing Die under a kind of electric field action |
-
2019
- 2019-01-25 CN CN201910072814.9A patent/CN109570364B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07155856A (en) * | 1993-12-01 | 1995-06-20 | Honda Motor Co Ltd | Forming equipment for metallic sheet |
| JPH07303919A (en) * | 1994-05-16 | 1995-11-21 | Honda Motor Co Ltd | Method for removing residual strain |
| RU2377071C2 (en) * | 2007-08-29 | 2009-12-27 | ЗАО "Кондор-Эко" | Method of production of elements of collecting electrodes for electrical precipitator |
| JP2015051458A (en) * | 2013-08-07 | 2015-03-19 | 淡路鉄工株式会社 | Method and apparatus for production of corrugated steel sheet for building material |
| CN103624142A (en) * | 2013-11-17 | 2014-03-12 | 保定金阳光能源装备科技有限公司 | Manufacturing technology and equipment of lead-acid battery continuous curved plate grid |
| CN104525746A (en) * | 2015-01-06 | 2015-04-22 | 哈尔滨工业大学（威海） | Rapid heating and forming integrated device and method |
| CN204523993U (en) * | 2015-01-26 | 2015-08-05 | 计颖 | A kind of heat sink bending die |
| CN106563715A (en) * | 2016-11-03 | 2017-04-19 | 山东大学 | Panel veneer electroplastic multifunctional V-shaped bending die and system |
| CN207127094U (en) * | 2017-07-28 | 2018-03-23 | 洛阳高科钼钨材料有限公司 | A kind of molybdenum matter corrugated plating punch-forming mold |
| CN108160795A (en) * | 2017-12-22 | 2018-06-15 | 天津职业技术师范大学 | For the hydraulic device of aluminium alloy forming |
| CN108160823A (en) * | 2017-12-26 | 2018-06-15 | 重庆江东机械有限责任公司 | For the mold system of processing of heat stamping and shaping sketch plate |
| CN108160824A (en) * | 2018-01-22 | 2018-06-15 | 燕山大学 | Without flanged cylinder part Drawing Die under a kind of electric field action |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109570364A (en) | 2019-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109570364B (en) | Electric field auxiliary forming die for ultrahigh-strength multi-channel bent part | |
| CN109332488B (en) | Electric field assisted reverse deep drawing forming die for high-strength cap-shaped part | |
| CN104511529A (en) | Bending die with surface micro-structure and bending punch thereof | |
| CN107138589B (en) | Plate hole flanging forming device and forming method | |
| CN105458081B (en) | A kind of a few pot shell punch forming frocks of font half of irradiation monitoring pipe | |
| CN201768810U (en) | Bending die for wiring terminal stamping parts of low-voltage electrical apparatus | |
| CN110479806B (en) | Self-resistance heating stamping device for metal elongated parts | |
| CN110666018B (en) | Coil-free electromagnetic composite forming device and forming method | |
| CN110640018B (en) | Multi-physical-field composite effect micro-forming device and method | |
| CN112974591A (en) | Electric auxiliary bending device and method | |
| CN213613711U (en) | A stamping die for arc part | |
| CN209736355U (en) | Forming equipment for electrical contact | |
| CN219616509U (en) | Continuous three-step stamping die device for motor tricycle edging sleeve | |
| CN207735449U (en) | A kind of auto parts diel | |
| CN214814332U (en) | Automatic stamping forming mechanism for sheet metal parts | |
| KR20140126968A (en) | Impact forming apparatus and impact forming method | |
| CN109127867A (en) | A kind of automobile brake disc mold | |
| CN215279479U (en) | Double-bending progressive die for high-strength steel plate | |
| CN213162790U (en) | Ejecting structure of stamping die | |
| CN211464344U (en) | Multi-piece stacked annealing or shaping jig | |
| CN103878258B (en) | A kind of fastening device | |
| CN215315147U (en) | Combined type drawing die/drawing stamping die structure | |
| CN215786271U (en) | Stamping die with spring guide pin | |
| CN216881392U (en) | Movable mould positioning guide pin structure | |
| CN111974853B (en) | Positive dress formula aperture flanging dies under electric field effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231109 Address after: 314000 Room 1202, Building 16, Yuxi Garden, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Sun Yongjun Address before: 066000 No. 438, Hebei Avenue, Qinhuangdao, Hebei Patentee before: Yanshan University |
|
| TR01 | Transfer of patent right |