CN116372006A - Hot stretch forming device suitable for flat plate forming spherical surface - Google Patents
Hot stretch forming device suitable for flat plate forming spherical surface Download PDFInfo
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- CN116372006A CN116372006A CN202310354156.9A CN202310354156A CN116372006A CN 116372006 A CN116372006 A CN 116372006A CN 202310354156 A CN202310354156 A CN 202310354156A CN 116372006 A CN116372006 A CN 116372006A
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- hot stretch
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- 238000003490 calendering Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 17
- 239000010720 hydraulic oil Substances 0.000 claims description 15
- 239000011324 bead Substances 0.000 claims description 11
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 10
- 210000003205 muscle Anatomy 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000007493 shaping process Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- 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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The utility model relates to a sheet metal forming technology field specifically discloses a hot stretch forming device suitable for dull and stereotyped shaping sphere, including blank holder and die and the terrace die that is used for stretching the technology that is used for fixed panel and prevents panel wrinkling in carrying out the stretching technology, the blank holder is the gliding ring form from top to bottom, is provided with protruding calendering muscle at the top surface of blank holder, and the blank holder top surface is located the calendering muscle inboard and is the plane, and the bottom surface periphery of die is equipped with can with calendering muscle matched with annular. The purpose of this patent is solved the part and is in the tensile back, need use anchor clamps to fix a position the cutting to the part, and anchor clamps cost is higher, influences the problem of part cutting cost.
Description
Technical Field
The invention relates to the technical field of sheet metal forming processes, in particular to a hot stretch forming device suitable for forming spherical surfaces by flat plates.
Background
Drawing, also called drawing, stretching, calendaring, etc., refers to a machining process that uses a die to stamp a flat blank of a certain shape obtained after blanking into various open hollow parts or reduce the diameter and increase the height of the open hollow blank. Thin-walled parts of cylindrical, stepped, conical, spherical, box-like and other irregular shapes can be manufactured by the drawing process. The method is matched with other stamping forming processes such as flanging, bulging, flaring, necking and the like, and parts with extremely complex shapes can be manufactured. Therefore, the stretching process plays a very important role in the production process of industrial departments such as automobiles, airplanes, tractors, electric appliances, instruments, electronics and the like.
When the plate is stretched, the tangential compressive stress of the flange part is so large that the material is beyond the anti-instability capability of the material, the material of the flange part is unstable and raised, the phenomenon is called wrinkling, and in order to solve the wrinkling phenomenon, a blank is usually adopted by a blank holder, and the blank is not easy to arch under the action of the blank holder, so that the purpose of crease resistance is achieved. However, after the sheet is stretched, the stretched and formed part is usually required to be positioned by using a customized positioning fixture, the part is placed on the fixture, the part to be cut on the part is positioned by a cutting device, in order to avoid error in cutting, the cutting device only needs to cut the positioning part on the part placement fixture, but the positioning fixture is required to be designed independently according to the structure of the part, so that the production cost of the part is greatly increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hot stretch forming device suitable for flat plate forming spherical surfaces, which solves the problems that after a part is stretched, the part is required to be positioned and cut by a clamp, the cost of the clamp is high, and the cutting cost of the part is affected.
In order to solve the problems, the invention adopts the following technical scheme:
the utility model provides a hot stretch forming device suitable for dull and stereotyped shaping sphere, is including being used for fixed panel and preventing the blank to carry out the blank holder that the stretch technology was wrinkled and be used for the die and the terrace die of stretch technology, the blank holder is the ring form that can slide from top to bottom, is provided with bellied calendering muscle at the top surface of blank holder, and the blank holder top surface is located the calendering muscle inboard and is the plane, and the bottom surface of die is equipped with the annular that can cooperate with calendering muscle.
The principle of the scheme is as follows:
when carrying out stretch forming to panel, place the panel that will wait to stretch on terrace die and blank holder, the die is moved down this moment, extrudees panel, the panel forms the arch under the effect of calendering muscle and annular, the bellied part of panel can firmly be fixed between terrace die and die, after the panel is fixed, then terrace die and blank holder synchronous downstream, stretch forming is carried out to the panel that the fixing was accomplished, after finishing panel extrusion, upwards mention the die to upwards mention the blank holder, accomplish the drawing to panel this moment.
The beneficial effect that this scheme produced is:
in the scheme, the thickness of the part is continuously thinned in the stretching process, and the periphery of the plate can be fixed by arranging the calendaring ribs and the annular grooves, so that the material can be uniformly distributed on the plate when the middle part of the plate is stretched, and the consistency of the wall thickness of the part is further ensured; secondly, due to the existence of the calendaring ribs, a bulge is formed on the flange edge of the part in the stretching process, when the redundant peripheral edge of the part is cut, a special clamp is not required to clamp and position the part, and only the cutting equipment is required to be manually cut along the periphery of the bulge of the part, so that the cutting equipment is convenient to cut the part, and the processing cost of the part is reduced; finally, as the surface of the male die, which is contacted with the plate, of the machine tool is worn in the long-time use process, the pressing force of the blank holder and the female die is difficult to ensure, the effect of preventing wrinkling of the part can be reduced by using the blank holder alone, the periphery of the plate can be raised by using the calendaring rib, and the plate is pressed and fixed under the pressure of the female die, so that the plate is always kept in a fixed state in the stretching process.
Further, the bottom end of the male die is connected with a disc-shaped bottom plate through a screw, through holes are formed in the outer side Zhou Shuxiang of the bottom plate, the through holes are uniformly distributed in the periphery of the bottom plate, push rods for pushing the blank holder to slide up and down are penetrated and bundled in the through holes, after the edges of the plate form bulges, the female die and the push rods synchronously move downwards, and the plate is stretched and formed; after the part is processed, the part and the male die are attached tightly, at the moment, the female die is required to be taken down from the upper part of the part, the push rod is lifted, the blank holder is lifted up, the part is separated from the female die, and the part is convenient to take down.
Further, screw holes are formed in the side faces of the periphery of the bottom plate, the blank holder and the female die, lifting bolts are connected in the screw holes, and through the arrangement of the lifting bolts, the bottom plate, the blank holder and the female die can be lifted by the aid of lifting equipment installed on the truss, so that the bottom plate, the blank holder and the female die can be moved conveniently.
Further, the top of die is provided with the master cylinder that is used for promoting the die and removes, and the through-hole that is used for the exhaust is vertically seted up at the top face center of die simultaneously, and the output of master cylinder is hugged closely with the top surface of die, drives the die through the output of master cylinder and removes, and then can control the extrusion force of die to the part, avoids appearing the extrusion force too little, and the condition that the part shaping is not in place takes place, and the through-hole that is used for the exhaust is vertically seted up at the top face center of die, and the through-hole at die top can be when the die extrudees panel, will receive extruded gas discharge. .
Further, the lifting hole is formed in the circle center of the male die, after the part is formed, the male die can be lifted through lifting equipment on the truss car by connecting lifting screws in the lifting hole, and the lifting hole cannot influence the part in the stretching process.
Further, the inside of bottom plate and terrace die is equipped with the hydraulic tank of "T type", and the hydraulic tank is used there is hydraulic oil, and vice jar is connected to the bottom of hydraulic tank, and sliding connection respectively has sliding component in the inside top both sides of hydraulic tank, sliding component and hydraulic tank sliding seal connection, and sliding component comprises two push plates that set up relatively, uses member fixed connection between two push plates that set up relatively.
Further, the locating bead that can stretch out and draw back is installed at the top of the left and right sides push rod of bottom plate, and the push switch who is used for controlling auxiliary cylinder to start is installed to the bottom of locating bead, and when the push rod risees to promote the blank holder and removes, the locating bead shrink, when the locating bead shrink in the push rod, the locating bead can extrude push switch, and push switch starts, auxiliary cylinder starts, in pushing out the hydraulic pressure inslot with the partial hydraulic oil in the hydraulic pressure inslot, will promote slider along the hydraulic pressure inslot to the middle part removal of terrace die at hydraulic oil.
Further, logical groove has been transversely seted up respectively to the inside left and right sides of blank holder, but transversely slidable clamping block has been placed in logical groove, one side of the terrace die of clamping block orientation is wedge, one side that keeps away from the terrace die at the clamping block is connected with the spring, the one end and the clamping block of spring are fixed, the inside wall fixed connection of logical groove is seted up to the other end and blank holder, because need raise the blank holder earlier when stretching panel, the top surface of blank holder and the top surface of terrace die are in the coplanar, the clamping block can be under the effect of spring to the hydraulic pressure inslot extension in the push pedal outside at this moment, at the effect of clamping block, the clamp holder is in the state of being connected together with the terrace die, the die can be to panel extrusion at this moment, under the effect of calendering muscle, the annular arch that is used for fixed panel of extrusion.
Further, the U-shaped rods are installed on the left side and the right side of the blank holder, the middle parts of the U-shaped rods are rotationally connected with the cross rods protruding from the side walls of the blank holder, torsion springs are arranged on the U-shaped rods, one ends of the U-shaped rods are clamped into through grooves in the side faces of the blank holder, one ends of the U-shaped rods are contacted with one sides, far away from the male die, of clamping blocks, meanwhile, the other ends of the U-shaped rods are clamped into limit grooves arranged on the side faces of the female die, the limit grooves are respectively formed in the bottom side faces of the female die, after annular protrusions are extruded out of the surfaces of the plates, the female die is required to drive the blank holder to move downwards, stretching operation of a plate is completed, the two ends of the U-shaped rods are respectively clamped in the limit grooves on the side faces of the female die and the side faces of the blank holder, and connection of the female die and the blank holder is completed, so that the female die can move downwards with the blank holder simultaneously, and the push rod and the female die do not need to move downwards synchronously
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic cross-sectional view of FIG. 2 (A-A) in accordance with the present invention;
FIG. 4 is a schematic view of a base plate of the present invention;
FIG. 5 is a schematic diagram of a male die of the present invention;
FIG. 6 is a schematic view of a blank holder of the present invention;
FIG. 7 is a schematic diagram of a female die of the present invention;
FIG. 8 is a schematic view of a ring groove of the compression mold of the present invention;
FIG. 9 is a schematic drawing showing a state of stretch forming of a sheet according to the present invention;
FIG. 10 is a schematic diagram of the final state of the part of the present invention;
FIG. 11 is a schematic diagram of a second embodiment of the present invention;
fig. 12 is an enlarged schematic view of fig. 11 a in accordance with the present invention.
Reference numerals in the drawings of the specification include:
the device comprises a bottom plate 1, a blank holder 2, a calendaring rib 2-1, a male die 3, a lifting hole 3-1, a female die 4, a ring groove 4-1, a push rod 5, a positioning bead 5-1, a push switch 5-2, a hydraulic groove 6, a push plate 7, a rod piece 7-1, a clamping block 8, a spring 9, a U-shaped rod 10, a torsion spring 11 and a limit groove 12.
Detailed Description
The following is a further detailed description of the embodiments:
taking fig. 1 as an example, in the drawing, a bottom plate 1 is arranged at the bottom of a male die 3, and is taken as a direction reference.
Example one is substantially as shown in figures 1 to 10:
one type of part in an aircraft is formed by a drawing process, and a sheet of titanium alloy material is placed in an environment at 730 ℃ for drawing and forming. The sheet material is placed on the top surface of cylindric terrace die 3, terrace die 3 is as shown in fig. 5, be connected with discoid bottom plate 1 through the interior hexagonal socket head cap screw of M16 x 40 model in the bottom of terrace die 3, bottom plate 1 is as shown in fig. 4, the surface vertical of bottom plate 1 has seted up the hole that runs through, the hole evenly circumference distributes along the centre of a circle of bottom plate 1, bottom plate 1 is placed on the lathe, be provided with a plurality of push rods 5 that can upwards stretch out on the lathe simultaneously vertically, push rod 5 passes evenly distributed in the through-hole of bottom plate 1 surface.
The periphery of the male die 3 is sleeved with a blank holder 2 capable of sliding up and down, the blank holder 2 is in a circular ring shape, the top surface of the blank holder 2 is provided with an annular calendaring rib 2-1 as shown in figure 6, the top of the blank holder 2 is a plane, when a plate is stretched, the blank holder 2 is jacked up by the push rod 5, the top surface of the blank holder 2 and the top surface of the male die 3 are positioned on the same plane, then the plate is placed on the male die 3 and the blank holder 2, the female die 4 moves downwards, the plate is extruded by the female die 4 and forms a bulge under the action of the calendaring rib 2-1, and at the moment, the fixing of the plate is completed; after the follow-up plate is fixed, the male die 3 and the push rod 5 synchronously move downwards to stretch the plate, the planes on two sides of the calendaring ribs 2-1 can ensure that wrinkling phenomenon can not occur in the process of stretching the plate, and secondly, the raised calendaring ribs 2-1 can ensure that the plate is uniformly fed in the stretching process, so that inconsistent wall thickness of the stretched part is avoided.
After the part is stretched and formed, the part is tightly attached to the male die 3, at the moment, the push rod 5 is lifted to jack up the blank holder 2, the part is separated from the male die 3, and the stretched part is conveniently taken down.
The upper portion of the male die 3 is provided with the female die 4, the female die 4 is shown in figures 7-8, the bottom end face of the female die 4 is matched with the top face of the male die 3, the bottom face of the female die 4 is provided with the annular groove 4-1 which can be matched with the calendaring rib 2-1, the periphery of a plate can form an annular structure which is bulged upwards through the annular groove 4-1 and the calendaring rib 2-1, the plate is in a fixed state between the female die 4 and the male die 3, a cutting process is needed after the part is stretched, the stretched part does not need to be positioned by using a specially-customized clamp, the inner side plane part of the bulged part is directly cut off through a cutting tool, the stretched and molded state of the part is shown in figure 9, the part is placed in five-axis laser cutting equipment after the periphery of the part is cut, the top face of the part is cut, and the state after the part is cut is shown in figure 10.
The center of the top surface of the female die 4 is provided with a through hole penetrating radially, the through hole is used for exhausting in the process of extruding a part, a main cylinder is connected above the female die 4 and is a hydraulic cylinder, the output end of the main cylinder is propped against the top surface of the female die 4, the female die 4 is synchronously driven to move towards the bottom plate 1 through the main cylinder and the push rod 5, and a plate placed on the top surface of the male die 3 is stretched and formed.
Holes are formed in the peripheral side walls of the bottom plate 1, the blank holder 2 and the female die 4, eye bolts with the model number of M12 can be placed in the holes, a truss is installed in a site environment of a stretching process, a hoisting tool is installed on the truss, the hoisting tool can hoist the bottom plate 1, the blank holder 2 and the female die 4 through the eye bolts, position transfer is carried out, and the plate is conveniently stretched in different sites; secondly, a lifting hole 3-1 is formed in the center of the top surface of the male die 3, and when in lifting, a lifting bolt can be installed in the lifting hole 3-1, so that the male die 3 can be lifted and detached.
An embodiment is implemented as follows:
when the plate needs to be stretched into a part, a master cylinder is started at the moment, and the master cylinder drives a female die 4 to move upwards to expose a male die 3; then starting a push rod 5, lifting the push rod 5 to jack up the blank holder 2, wherein the top surfaces of the blank holder 2 and the male die 3 are positioned on the same plane, and then placing a plate to be processed on the male die 3 and the blank holder 2; starting a master cylinder, wherein the master cylinder drives the female die 4 to move downwards, extruding the periphery of the plate at the position of the calendaring rib 2-1 to form a bulge, and fixing the bulge; the master cylinder and the push rod 5 synchronously move downwards to stretch the middle part of the plate, and when the bottom surface of the blank holder 2 is sheared with the bottom plate 1, the processing of the plate is completed to form a product; finally, the master cylinder drives the female die 4 to move upwards, the push rod 5 pushes up the blank holder 2 upwards, and the machined part can be taken out.
11-12, the second embodiment is different from the first embodiment in that the middle parts of the bottom plate 1 and the male die 3 are provided with a 'T-shaped' hydraulic groove 6 for storing hydraulic oil, the bottom end of the hydraulic groove 6 is connected with a sub-cylinder, the sub-cylinder is a hydraulic cylinder, the sub-cylinder is not drawn in the drawings, sliding components capable of sliding horizontally are respectively arranged at the left side and the right side of the top in the hydraulic groove 6, and the sliding components are in sliding sealing connection with the inner wall of the hydraulic groove 6; the sliding component consists of two push plates 7 which are oppositely arranged, and the two push plates 7 which are oppositely arranged are connected by using a rod piece 7-1.
The top of push rod 5 of the left and right sides of bottom plate 1 is installed and is equipped with the location pearl 5-1 that can stretch out and draw back, the push switch 5-2 that is used for controlling the auxiliary cylinder to start is installed to the bottom of location pearl 5-1, when push rod 5 rises to promote blank holder 2 and remove, location pearl 5-1 shrink, when location pearl 5-1 shrink to push rod 5 in, location pearl 5-1 can extrude push switch 5-2, push switch 5-2 starts, auxiliary cylinder starts, part hydraulic oil in with hydraulic tank 6 is released in the hydraulic tank 6, will promote slider along hydraulic tank 6 to the middle part of terrace die 3 at hydraulic oil.
The left and right sides of blank holder 2 transversely has seted up logical groove respectively, but has placed lateral sliding's chucking piece 8 in logical inslot, and the one side of terrace die 3 of chucking piece 8 orientation is wedge, is connected with spring 9 in the one side that chucking piece 8 kept away from terrace die 3, and spring 9's one end is fixed with chucking piece 8, and the inside wall fixed connection of logical groove is seted up with blank holder 2 to the other end. Because the blank holder 2 needs to be lifted when the plate is stretched, the top surface of the blank holder 2 and the top surface of the male die 3 are positioned on the same plane, the clamping block 8 can extend into the hydraulic groove 6 at the outer side of the push plate 7 under the action of the spring 9, the blank holder 2 and the male die 3 are in a connected state under the action of the clamping block 8, the female die 4 can extrude the plate, and the annular bulge for fixing the plate is extruded under the action of the calendaring rib 2-1.
The left side and the right side of the blank holder 2 are provided with U-shaped rods 10, the middle parts of the U-shaped rods 10 are rotationally connected with cross bars protruding from the side walls of the blank holder 2, torsion springs 11 are arranged on the U-shaped rods 10, one ends of the U-shaped rods 10 are clamped into through grooves in the side surfaces of the blank holder 2, one ends of the U-shaped rods 10 are contacted with one side, far away from the male die 3, of the clamping blocks 8, meanwhile, the other ends of the U-shaped rods 10 are clamped into limit grooves 12 arranged in the side surfaces of the female die 4, and the limit grooves 12 are respectively formed in the bottom side surfaces of the female die 4; after the annular bulge is extruded on the surface of the plate, the female die 4 is required to drive the blank holder 2 to move downwards to finish the stretching operation of the plate, the push rod 5 moves downwards at the moment, the positioning bead 5-1 pops up, the pressing switch 5-2 releases under the action of the positioning bead 5-1, the auxiliary cylinder is started, hydraulic oil is supplied into the hydraulic groove 6 by the auxiliary cylinder, hydraulic oil is filled into the hydraulic groove 6 by the auxiliary cylinder, one side of the clamping block 8 is pushed outwards by the push plate 7 under the pushing of the hydraulic oil, but the clamping block cannot be completely pushed out of the hydraulic groove 6, the wedge-shaped part of the clamping block 8 is still positioned in the hydraulic groove 6, the wedge-shaped part of the clamping block 8 can support the pressure generated by the downward extrusion of the blank holder 2 by the female die 4, the main cylinder continuously pushes the female die 4 to move downwards, at the moment, the wedge-shaped part of the clamping block 8 can be pressed into the through groove of the blank holder 2 under the action of strong pressure, the clamping block 8 can push the U-shaped rod 10 outwards move when moving into the through groove of the blank holder 2, the other side of the clamping block 10 can not be synchronously connected with the female die 4 at the side face of the die 4, and the blank holder 4 can be synchronously moved downwards, and the blank holder 4 can be simultaneously required to be synchronously moved with the female die 4.
Example two detailed description:
when the push rod 5 lifts upwards to push the blank holder 2 and the positioning bead 5-1 on the push rod 5 is propped against the blank holder 2, the push switch 5-2 is extruded, the push switch 5-2 controls the auxiliary cylinder to extract part of hydraulic oil in the hydraulic groove 6, and the push plate 7 moves towards the middle part of the male die 3 under the action of the hydraulic oil; when the top surface of the blank holder 2 and the top surface of the male die 3 are positioned on the same plane, the push rod 5 moves downwards to return to the initial position, the push switch 5-2 controls the auxiliary cylinder to fill hydraulic oil into the hydraulic groove 6, and the push plate 7 moves to the outer side of the male die 3 under the action of the hydraulic oil; the clamping block 8 is clamped into a hydraulic groove 6 arranged on the male die 3 under the action of a spring 9, and the blank holder 2 and the male die 3 are connected into a whole; placing a plate on the top surface of a male die 3, and driving a female die 4 to extrude the plate by a master cylinder to form an annular bulge; the auxiliary cylinder is started, under the action of hydraulic oil, the push plate 7 moves to one side of the clamping block 8, and part of the clamping block 8 is pushed out of the hydraulic groove 6, and the blank holder 2 and the male die 3 cannot be separated as the clamping block 8 is also partially clamped in the hydraulic groove 6; the master cylinder pushes the female die 4 to continuously extrude downwards, and the wedge-shaped part of the clamping block 8 is extruded into the blank holder 2 under the action of pressure; then, the clamping block 8 pushes the U-shaped rod 10, and under the action force of the torsion spring 11, the limit groove 12 of the female die 4 at the other end of the U-shaped rod 10 is connected with the female die 4, so that the female die 4 and the female die 2 can synchronously move downwards, and the plate is stretched.
The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. The utility model provides a hot stretch forming device suitable for flat forming sphere, includes blank holder that is used for fixed panel and prevents that panel from wrinkling in carrying out stretching process and die and terrace die that are used for stretching process, its characterized in that: the blank holder is in a ring shape capable of sliding up and down, the top surface of the blank holder is provided with a protruding calendaring rib, the top surface of the blank holder is positioned on the inner side of the calendaring rib and is in a plane, and the bottom surface of the female die is provided with a ring groove capable of being matched with the calendaring rib.
2. A hot stretch forming apparatus adapted for flat-formed spherical surfaces as claimed in claim 1, wherein: the bottom of terrace die is connected with discoid bottom plate through the screw, and the through-hole that runs through is offered to the outer Zhou Shuxiang of bottom plate, and through-hole evenly distributed is in the periphery of bottom plate, wears to restraint in the through-hole to have the push rod that is used for pushing away the blank holder and removes.
3. A hot stretch forming apparatus adapted for flat-formed spherical surfaces as claimed in claim 1, wherein: screw holes are formed in the side faces of the peripheries of the bottom plate, the blank holder and the female die, and lifting bolts are connected in the screw holes.
4. A hot stretch forming apparatus adapted for flat-formed spherical surfaces as claimed in claim 1, wherein: the upper part of the female die is provided with a main cylinder for pushing the female die to move up and down, and the center of the top end surface of the female die is vertically provided with a through hole for exhausting.
5. A hot stretch forming apparatus adapted for flat-formed spherical surfaces as claimed in claim 1, wherein: and a lifting hole is formed in the center of the male die.
6. A hot stretch forming apparatus adapted for flat-formed spherical surfaces as claimed in claim 1, wherein: the inside of bottom plate and terrace die is equipped with the hydraulic tank of "T type", and the hydraulic tank is used there is hydraulic oil, and vice jar is connected to the bottom of hydraulic tank, and the inside top both sides of hydraulic tank sliding connection respectively have sliding component, sliding component and hydraulic tank sliding seal connection, and sliding component comprises two push plates that set up relatively, uses member fixed connection between two push plates that set up relatively.
7. A hot stretch forming apparatus adapted for flat panel forming of spherical surfaces according to claim 6, wherein: the top of the push rods at the left side and the right side of the bottom plate is provided with a positioning bead which can stretch out and draw back, and the bottom end of the positioning bead is provided with a push switch for controlling the auxiliary cylinder to start.
8. A hot stretch forming apparatus adapted for flat-formed spherical surfaces as claimed in claim 1, wherein: the inside left and right sides of blank holder transversely has seted up logical groove respectively, but has placed lateral sliding's chucking piece in logical inslot, and one side of the terrace die of chucking piece orientation is wedge, is connected with the spring in one side that the terrace die was kept away from to chucking piece, and the one end and the chucking piece of spring are fixed, and the inside wall fixed connection of logical groove is seted up with the blank holder to the other end.
9. A hot stretch forming apparatus adapted for flat panel forming of spherical surfaces according to claim 7, wherein:
u-shaped rods are installed on the left side and the right side of the blank holder, the middle portions of the U-shaped rods are connected with the protruding transverse rods of the side walls of the blank holder in a rotating mode, torsion springs are arranged on the U-shaped rods, one ends of the U-shaped rods are clamped into through grooves in the side faces of the blank holder, one ends of the U-shaped rods are contacted with one sides, away from the male die, of the clamping blocks, meanwhile, the other ends of the U-shaped rods are clamped into limit grooves formed in the side faces of the female die, and the limit grooves are formed in the side faces of the bottom of the female die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310354156.9A CN116372006A (en) | 2023-03-31 | 2023-03-31 | Hot stretch forming device suitable for flat plate forming spherical surface |
Applications Claiming Priority (1)
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| CN202310354156.9A CN116372006A (en) | 2023-03-31 | 2023-03-31 | Hot stretch forming device suitable for flat plate forming spherical surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117798617A (en) * | 2024-03-01 | 2024-04-02 | 成都长之琳航空制造有限公司 | Shell forming processing technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117798617A (en) * | 2024-03-01 | 2024-04-02 | 成都长之琳航空制造有限公司 | Shell forming processing technology |
| CN117798617B (en) * | 2024-03-01 | 2024-05-17 | 成都长之琳航空制造有限公司 | Shell forming processing technology |
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