CN110523792A - The combined shaping method of staged rotary squeezing inner ring muscle - Google Patents
The combined shaping method of staged rotary squeezing inner ring muscle Download PDFInfo
- Publication number
- CN110523792A CN110523792A CN201910969784.1A CN201910969784A CN110523792A CN 110523792 A CN110523792 A CN 110523792A CN 201910969784 A CN201910969784 A CN 201910969784A CN 110523792 A CN110523792 A CN 110523792A
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- Prior art keywords
- pin
- punch
- inner ring
- forming
- impression
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
Abstract
The combined shaping method of staged rotary squeezing inner ring muscle disclosed by the invention, this method is related to a kind of composite forming die of staged rotary squeezing inner ring muscle, which includes extruder, liftout tank, seperated punch-pin, tiltedly carve, rotating device, radially slide component and cavity plate；The fission punch-pin includes left punch-pin and right punch-pin, and the lateral wall of the fission punch-pin forms preform impression and eventually forming impression, and preform impression is located at the top of forming impression eventually, and cavity plate has type chamber, and type chamber is placed for cylindrical member blank.This case first carries out the accumulation of metal band that a time rotary squeezing preform shapes cylinder inboard wall, two passages carry out rotary squeezing the forming mode of forming forming inner ring muscle are more advantageous to and shift cylinder inboard wall metal at inner ring muscle eventually again, the inner ring muscle shaped is higher, fuller, and the process for eliminating more mold exchange, improve production efficiency.
Description
Technical field
The present invention relates to light metal material plastic working technique and forming technique field, in particular to a kind of staged forming
Rotary squeezing composite die with high, thick inner ring muscle housing part.
Background technique
Large-size cylinder body, shell are widely used in fields such as space flight, military project, automobiles, with the development of science and technology, light to meet
The Structural Design Requirement of quantization, enclosure interior are wanted often with many inner ring muscle, the strong mechanical performance and uniformity consistency of shell
Asking must monolithic molding.But it will be by being plastically deformed the inner ring muscle for shaping cylinder, shell components inner wall out but due to forming
It is not easy, quality is bad, demoulding is difficult as the integrally formed technical bottleneck of shell.
Rotary squeezing technique overcomes the manufacturing defect of the techniques such as tradition machinery processing, casting, welding, and cavity plate drives cylinder
Blank rotation, the manufacturing process of seperated punch-pin radial feed are successfully manufactured that the ring muscle of cylinder inboard wall.Rotary squeezing technique is multiple
The metal flow that miscellaneous mold movement mode is doomed to will lead to cylinder blank is complicated, the inner ring muscle shaped often exist stacking,
The defects of inner ring muscle is highly filled discontented does not meet the forming quality requirement of high, thick inner ring muscle, as shown in Figure 1.
In general, the cavity shape of mold will be consistent with the shape of the inner ring muscle finally shaped.Therefore, if using single
One mould structure, then the cavity structure shape of mold is determined by the shape for the inner ring muscle finally to shape substantially.And in reality
In spin extrusion process, the stress state in flow of metal area determines its flowing law, by cavity plate shape, rotation speed and punch-pin diameter
Matched influence to the amount of feeding and rotation speed and radial feed speed is difficult metal water conservancy diversion gathering seperated punch-pin
In impression, so, compared to the mould structure of single pass, the multi-pass mould structure for possessing multi-pass squeeze function larger can change
It is apt to the phenomenon；But, it is contemplated that there is very big difference in the mould structure of multi-step forming, will necessarily use at least two structures
Different seperated punch-pin, so needing replacing mold after preform, process is complicated and increases the heating of cylinder blank time
Number.
Based on above-mentioned, this case is given birth to therefrom.
Summary of the invention
The purpose of the present invention is to provide a kind of combined shaping methods of staged rotary squeezing inner ring muscle, excellent by topology
Change, two passages forming make into inner ring muscle deformation it is more uniform, both ensure that inner ring muscle forming quality, and in turn simplified operating process,
Production efficiency is improved, the inner ring muscle shaped has high and thick feature.
In order to achieve the above objectives, solution of the invention is as follows:
The combined shaping method of staged rotary squeezing inner ring muscle, this method are related to a kind of staged rotary squeezing inner ring muscle
Composite forming die, which includes extruder, liftout tank, seperated punch-pin, tiltedly carve, rotating device, radially slide component and
Cavity plate；The fission punch-pin includes left punch-pin and right punch-pin, the lateral wall of the fission punch-pin formed preform impression and eventually at
Shape impression, preform impression are located at the top of forming impression eventually, and cavity plate has type chamber, and type chamber is placed for cylindrical member blank, the party
Method the following steps are included:
Preparation before S1 forming: first being completed mold by the assembly of above-mentioned installation relation, then concave die cavity, seperated punch-pin are heated
Lubricant is uniformly smeared afterwards, will be then put into concave die cavity after cylindrical member blank heating, and cylindrical member blank is uniformly smeared
Lubricant；
S2 forming process: rotating device, which is opened, drives cavity plate rotation, and cavity plate drives cylindrical member blank to keep constant angular speed
Rotation, extruder drives seperated punch-pin downlink, after preform impression corresponds to the inner ring muscle shaping position of cylindrical member blank inner wall
Stop, the inner ring muscle center that preform center of die cavity alignment at this time needs to shape；Cavity plate keeps rotary motion, and liftout tank drives oblique
It carves to move downward and struts seperated punch-pin, so that left punch-pin and right punch-pin radial motion is squeezed cylinder inboard wall, cylinder inboard wall metal is by side
It is flowed into preform impression to extruding force, forms accumulation of metal band；It is specified when left punch-pin and right punch-pin radial displacement reach cylinder
Inner ring muscle shaping position after stop motion, cavity plate continue rotation turns around, complete a time forming；Liftout tank uplink drives oblique
It carves and moves upwards, while left and right punch-pin radial closure；Extruder drives seperated punch-pin to move upwards, when forming impression is corresponding eventually
Stop after reaching accumulation of metal band, forming center of die cavity is directed at accumulation of metal band center eventually at this time；Liftout tank ejects again, drives
It tiltedly carves to move downward again and struts seperated punch-pin, until seperated punch-pin is strutted completely, left punch-pin and right punch-pin radial motion are squeezed
Cylinder inboard wall is pressed, accumulation of metal band is entered in forming impression eventually by lateral compression force flow, forms final required forming inner ring muscle, top
Cylinder stop motion out, cavity plate continue to rotate；Finally, liftout tank uplink, drives oblique carve to move up reset, left punch-pin and right punch-pin are radial
Closure completes the deformation of two passages；
S3 forming terminates: rotating device stops that cavity plate and cylindrical member is driven to stop, and extruder uplink takes away seperated punch-pin
Cavity plate.
The mold further includes the liftout attachment for being detached from cylindrical member blank from cavity plate, in step s3, extruder uplink
After seperated punch-pin is taken away cavity plate, the cylindrical member rested in cavity plate is ejected upwards by liftout attachment, completes demoulding；Finally again
Toward concave die cavity, seperated punch-pin coating lubricating oil, next cylindrical member blank inner ring muscle rotary extrusion forming process is carried out.
After adopting the above scheme, the present invention has substantive technical characterstic and shows compared to traditional inner ring muscle manufacturing process
The effect of work is:
1) preform inner ring muscle: the prior art uses rotary extrusion forming, in practical spin extrusion process, flow of metal
The stress state in area determines its flowing law, by cavity plate shape, rotation speed and punch-pin radial feeds and rotation speed and
The matched influence of radial feed speed is difficult in the impression that metal water conservancy diversion is gathered to seperated punch-pin.And what the present invention used
Seperated punch-pin is equipped with preform impression, first passes through radial feed to preform impression, can be in advance effectively the poly- material of inner ring muscle, keep away
Exempt from direct rotary squeezing at metal flow when muscle it is bad caused by muscle portion filling is discontented or filling defect problem.
2) two passages shape: being conducive to whole shape shift the poly- material of preform at inner ring muscle, the inner ring muscle shaped eventually
It is higher, fuller.
3) by topological optimization, using the compound seperated punch-pin of stepped configuration, the motion state of seperated punch-pin is axial passs
Into formula, by first contacting metal in the pre-shaped section of rotary squeezing punch-pin, the aggregation of metal needed for realizing forming muscle divides with reasonable
It with flowing, carries out rotary squeezing again on this basis and shapes eventually, this case only needs to move axially seperated punch-pin, and it is convex to save replacement
The process of mould, simplifies operating process, improves forming efficiency.
Below in conjunction with drawings and the specific embodiments, the present invention is further described.
Detailed description of the invention
Fig. 1 is art methods inner ring muscle schematic diagram formed thereby；
Fig. 2 is that one embodiment of the invention pre-formed metal shifts schematic diagram；
Fig. 3 is that one embodiment of the invention end form metal shifts schematic diagram；
Fig. 4 is the half-section diagram of one embodiment of the invention fission punch-pin；
Fig. 5 is the axis side schematic diagram of one embodiment of the invention fission punch-pin；
Fig. 6 is one embodiment of the invention entirety assembling schematic diagram；
Fig. 7 is fed to preform impression for one embodiment of the invention fission punch-pin downlink and corresponds to showing for inner ring muscle shaping position
It is intended to；
Fig. 8 is that one embodiment of the invention tiltedly carves to move down and struts seperated punch-pin preform impression pre-extrusion is made to shape inner ring muscle
Schematic diagram；
Fig. 9 is tiltedly carved for one embodiment of the invention and is moved up reset, and seperated punch-pin merges the schematic diagram for completing preform inner ring muscle；
Figure 10 is the signal that one embodiment of the invention fission punch-pin goes upward to that forming impression eventually corresponds to inner ring muscle shaping position
Figure；
Figure 11 be one embodiment of the invention tiltedly carve move down again strut seperated punch-pin make eventually shape the final extrusion molding of impression
The schematic diagram of inner ring muscle；
Figure 12 is tiltedly carved for one embodiment of invention and is moved up reset, and seperated punch-pin, which merges needed for uplink is completed, shapes showing for inner ring muscle
It is intended to；
Figure 13 is to invent an embodiment fission punch-pin to continue the schematic diagram that uplink exits cavity plate.
Drawing reference numeral:
Liftout tank 1, seperated punch-pin 2, left punch-pin 21, right punch-pin 22, preform impression 23, whole forming impression 24, inside groove 25,
3 are tiltedly carved, rotating device 4 radially slides component 5, connecting key 51, cavity plate 6, type chamber 61, upper cavity die 62, lower cavity die 63, fastening spiral shell
Bolt 64, sheath 65, cylindrical member blank 7, fixed plate 8, through-hole 81.
Specific embodiment
A kind of composite forming die of staged rotary squeezing inner ring muscle of the present invention refering to Fig. 2-13, including squeezes
Press (not shown), seperated punch-pin 2, tiltedly carves 3, rotating device 4, radially slides component 5, cavity plate 6 and ejection liftout tank 1
Device (not shown)；
The fission punch-pin 2 includes left punch-pin 21 and right punch-pin 22, and left punch-pin 21, right punch-pin 22 are respectively by radially sliding
Component 5 is connected to below extruder, and extruder drives 2 axial feed of seperated punch-pin；
It is described tiltedly to carve 3 and be built between left punch-pin 21, right punch-pin 22, tiltedly carve 3 lower end in bullet-shaped, tiltedly carve 3 it is upper
End connection liftout tank 1, is driven by liftout tank 1 and tiltedly carves 3 and move up and down, to control the folding of seperated punch-pin 2, carved under 3 when tiltedly
When shifting, the lower end of bullet-shaped struts left punch-pin 21, right punch-pin 22, when tiltedly carving 3 and moving up reset, left punch-pin 21, right punch-pin 22
Merge；
The lateral wall of the fission punch-pin 2 forms preform impression 23 and forming impression 24, preform impression 23 are located at eventually
The top of forming impression 24 eventually, the radial width of preform impression 23 are greater than the radial width of forming impression 24 eventually；
The cavity plate 6 connects rotating device 4, and rotating device 4 drives cavity plate 6 around 6 central axis rotation of cavity plate, and cavity plate 6 has
Type chamber 61, type chamber 61 are placed for cylindrical member blank 7.
The left punch-pin 21, right punch-pin 22, which merge, to be formed for tiltedly carving 3 inside grooves 25 for moving up merging, the shape of inside groove 25 and tiltedly
3 shape is carved to be adapted, which can make tiltedly to carve 3 saves radial space after moving up, meanwhile, facilitate seperated punch-pin 2 and merge,
Also, tiltedly carve 3 when moving down, the lower end of bullet-shaped can smoothly be moved down along 25 inclined-plane of inside groove, reach strut it is seperated convex
The effect of mould 2.
In one embodiment, component 5 is radially slided in order to advanced optimize, fixed plate is fixedly mounted below the extruder
8, radially sliding component 5 includes a pair of of radial track (not shown) and a pair of of connecting key 51, and a pair of of radial track is along fixed
8 central axes of plate are distributed in 8 lower section two sides of fixed plate, and the one end fits of a pair of of connecting key 51 are in radial track, other end difference
Fixed left punch-pin 21, right punch-pin 22, so that left punch-pin 21, right punch-pin 22 are connected to fixed plate 8 by radially sliding component 5 respectively
Lower section and along the left and right sliding of fixed plate 8.Through-hole 81 is opened up in the middle part of the fixed plate 8, passes through through-hole 81 for the liftout tank 1
Connect with the upper end for tiltedly carving 3, tiltedly carve in this way 3 move up and down and the axial feed of seperated punch-pin 2 is two and comes independently of each other
Movement.
As preferred version, the cavity plate 6 includes upper cavity die 62, lower cavity die 63, fastening bolt 64 and sheath 65；Upper cavity die
62 and the edge of lower cavity die 63 be equipped with the threaded hole (not shown) of same size in corresponding position, upper cavity die 62 passes through
64 mate with threaded holes of fastening bolt can be convenient for the dismounting of unitary mould to be removably attached to 63 top of lower cavity die.Sheath
65 are connected through a screw thread and are fixed on the top of upper cavity die 62, for protecting safety of the user when mold breaks down.
Liftout attachment is for cylindrical member blank 7 to be detached from from cavity plate 6.For convenient for demoulding, the bottom of the concave die cavity 61
Portion is equipped with ejection channel (not shown), and liftout attachment is set in ejection channel.
Since in practical spin extrusion process, the stress state in flow of metal area determines its flowing law, by cavity plate shape
The matched influence of shape, rotation speed and punch-pin radial feeds and rotation speed and radial feed speed, is difficult metal
Water conservancy diversion gathers in the impression of seperated punch-pin, so this case uses preformed purpose primarily to being more efficiently inner ring
The poly- material of muscle, avoid direct rotary squeezing at when muscle because caused by metal flow is bad muscle portion filling it is discontented or filling defect is asked
Topic.
The flowing law of stress state and deformed area metal of this case by analysis under the conditions of rotary squeezing, topological optimization
Preformed impression structure type such as Fig. 2 out, by controlling the setting of grouping teaching, reasonable distribution metal, it is ensured that whole form metal
The needs of flowing.Preform inner ring muscle is as shown in Figure 2.During the feeding of preform fission punch-pin, the work of preform impression 23
Make band insertion cylinder blank inner wall, instead of script inner wall metal, this part metals is under shunting function to preform impression 23
Transfer, α 1 and α 2 are the volume section that work belt on the seperated punch-pin 2 of preform is embedded in cylindrical member blank, this partial volume is cylinder
Internal wall " accumulation of metal band " provides part material.Meanwhile the radial feed of seperated punch-pin 2 makes the metal of cylinder inboard wall and divides
The contrary flowing of 2 radial feed of body punch-pin is based on the isometric principle of Plastic Forming, flows into the volume section of seperated punch-pin impression
That is the area Fig. 2 Zhong β.α 1, α 2 and β convergence are filled to preform impression 23, are collectively constituted " accumulation of metal band " that expectation obtains.
Fig. 3 is preform and forming inner ring muscle cross section profile schematic diagram, Fig. 3 show metal by 23 shape of preform impression eventually
At " accumulation of metal band " to eventually forming inner ring muscle transfer signal, wherein A, C1, C2, D1, D2 be cylinder inboard wall preform " gold
The sectional view of category accumulation zone ", A, B are the sectional views of required inner ring muscle after forming eventually.2 radial compression of seperated punch-pin is being shaped eventually
When, the water conservancy diversion at good grouping teaching and impression the first transaction of a day's business angle makes the metal at C1, C2 largely all be transferred to the inner ring muscle at B
Portion.
Either preform or forming, the motion state of seperated punch-pin 2 are all radial feeds eventually, this case is by two kinds of differences
Forming impression be compounded in a seperated punch-pin 2, first have to guarantee that two kinds of forming impressions will not influence each other at work, this
Outside, the working method of the seperated punch-pin 2 after compound, two kinds of forming impressions thereon will not still change.On forming sequence
Preform is preceding, after being formed in eventually, by design spatially, by the design of preform impression 23 in the upper of compound seperated punch-pin 2
End, the whole impression 24 that shapes are located at compound seperated 2 lower end of punch-pin and shape the radial width of impression 24 eventually less than preform impression
23 radial width；Determine that the position of forming impression 24 eventually is inner with respect to the position of preform impression 23.Novel combined point
The half-section diagram of body punch-pin 2 and axonometric schematic diagram are as shown in Figure 4 and Figure 5.
The combined shaping method for the staged rotary squeezing inner ring muscle that the present invention discloses, step specific as follows:
Prepare before S1 forming: first completing mold by the assembly of above-mentioned installation relation, as shown in fig. 6, again by 6 type chamber of cavity plate
61, seperated punch-pin 2 uniformly smears lubricant after heating, and is put into 6 type chamber 61 of cavity plate after then heating cylindrical member blank 7, and
Cylindrical member blank 7 is uniformly smeared into lubricant；
S2 forming process: as shown in fig. 7, rotating device 4 is opened, cavity plate 6 drives cylindrical member blank 7 to keep constant angular speed
Rotation, extruder drive seperated 2 downlink of punch-pin, stop after the corresponding inner ring muscle shaping position of preform impression 23, at this time in advance at
The inner ring muscle center that the alignment of 23 center of shape impression needs to shape；
As shown in figure 8, cavity plate 6 keeps rotary motion, liftout tank 1 is ejected, and is driven tiltedly to carve 3 and move downward and is strutted seperated punch-pin
2, so that left and right 22 radial motion of punch-pin is squeezed cylinder inboard wall, cylinder inboard wall metal is flowed into preform by the effect of lateral compression power
In impression 23, formed accumulation of metal band (i.e. preform inner ring muscle)；It is specified when left and right 21,22 radial displacement of punch-pin reaches cylinder
Inner ring muscle shaping position after stop motion, cavity plate 6 continue rotation turns around, it is therefore an objective to keep metal flow uniform, preform impression
23 sections for being parked in one week any position of cylinder inboard wall are all that filling is full；
As shown in figure 9,1 uplink of liftout tank, drive tiltedly carves 3 and moves upwards merging inside groove 25, while left and right punch-pin 21,22
Realize radial closure；
As shown in Figure 10, extruder drives seperated punch-pin 2 to move upwards, and reaches accumulation of metal when forming impression 24 is corresponding eventually
Stop after band, forming 24 center of impression is directed at accumulation of metal band center eventually at this time；
As shown in figure 11, liftout tank 1 ejects again, drives tiltedly to carve 3 and move downward again and struts seperated punch-pin 2, until will
Seperated punch-pin 2 struts (radial width that the radial width due to shaping impression 24 eventually is less than preform impression 23) completely, left and right
21,22 radial motion of punch-pin squeezes cylinder inboard wall, and accumulation of metal band is flowed into forming impression 24 eventually by the effect of lateral compression power
In, final required forming inner ring muscle, 1 stop motion of liftout tank are formed, cavity plate 6 continues to rotate；
As shown in figure 12,1 uplink of liftout tank, drive tiltedly carve 3 and move up reset, and left and right punch-pin 21,22 realizes radial closure；
S3 forming terminates: as shown in figure 13, rotating device 4 stops that cavity plate 6 and cylindrical member is driven to stop, extruder uplink,
Seperated punch-pin 2 is taken away into cavity plate 6, the cylindrical member rested in cavity plate 6 is ejected upwards by liftout attachment, completes demoulding；Again past
Concave die cavity 61,2 coating lubricating oil of seperated punch-pin, carry out next 7 inner ring muscle rotary extrusion forming process of cylindrical member blank.
Since the preform impression 23 of seperated punch-pin 2 and whole forming impression 24 spatially have radial width poor, preform
Impression 23 shapes the place that impression 24 is located remotely from cylinder inboard wall, after preform impression 23 moves radially in place in feeding eventually
Forming impression 24 will not encounter cylinder inboard wall eventually.Extruder moves up, when forming impression 24 moves radially eventually, preform impression 23
It is then exposed to cylinder upper end, after forming impression 24 moves radially in place eventually, preform impression 23 will not encounter the shield of 6 top of cavity plate
Set 65.It is shaped using two passages, is conducive to shift cylinder inboard wall metal at inner ring muscle, the inner ring muscle shaped is higher, more
It is full.
It is formed in after preform for two passages of solution and needs to change mold, process is complicated and increases the heating of cylindrical member blank 7
Two different forming impressions are compounded in a seperated punch-pin 2 and are adopted by the Topology Optimization Analysis using space by number, this case
Stepped configuration is taken, by the design of preform impression 23 in the upper half of seperated punch-pin 2, final shaping unit impression is designed in seperated punch-pin 2
Lower half and position it is relatively inner；It can guarantee that they will not interact at work, meanwhile, their working method is still
It is constant.Not only it ensure that inner ring muscle forming quality, but also the process for eliminating more mold exchange in production, and simplified operating process, promoted
Production efficiency.
In one embodiment, the cavity plate 6 can pass through key connecting rotating device 4.
It should be noted that preform impression 23 described in this case be those skilled in the art according to 7 preform of cylindrical member blank at connecing
It is bordering on the given structure of required inner ring muscle shape and size.Similarly, shaped eventually described in this case impression 24 be those skilled in the art according to
Cylindrical member blank 7 is finally shaped to the given structure of required inner ring muscle shape and size.
The above is only specific embodiments of the present invention, not to the restriction of protection scope of the present invention.All setting according to this case
The equivalent variations that meter thinking is done, each falls within the protection scope of this case.
Claims (2)
1. the combined shaping method of staged rotary squeezing inner ring muscle, this method is related to a kind of staged rotary squeezing inner ring muscle
Composite forming die, which includes extruder, liftout tank, seperated punch-pin, tiltedly carve, rotating device, radially slides component and recessed
Mould；The fission punch-pin includes left punch-pin and right punch-pin, and the lateral wall of the fission punch-pin forms preform impression and eventually forming
Impression, preform impression are located at the top of forming impression eventually, and cavity plate has type chamber, and type chamber is placed for cylindrical member blank, this method
The following steps are included:
Prepare before S1 forming: mold first being pressed into the assembly of above-mentioned installation relation and is completed, then will be equal after concave die cavity, seperated punch-pin heating
Even smearing lubricant will then be put into concave die cavity after cylindrical member blank heating, and cylindrical member blank uniformly smeared lubrication
Agent；
S2 forming process: rotating device, which is opened, drives cavity plate rotation, and cavity plate drives cylindrical member blank to keep constant angular speed rotation,
Extruder drives seperated punch-pin downlink, stops after the inner ring muscle shaping position that preform impression corresponds to cylindrical member blank inner wall,
The inner ring muscle center that preform center of die cavity alignment at this time needs to shape；Cavity plate keep rotary motion, liftout tank drive tiltedly carve to
Lower movement struts seperated punch-pin, so that left punch-pin and right punch-pin radial motion is squeezed cylinder inboard wall, cylinder inboard wall metal is laterally squeezed
Pressure flows into preform impression, forms accumulation of metal band；In left punch-pin and right punch-pin radial displacement arrival cylinder are specified
Stop motion after ring muscle shaping position, cavity plate continue rotation and turn around, and complete a time forming；Liftout tank uplink, drive tiltedly carve to
Upper movement, while left and right punch-pin radial closure；Extruder drives seperated punch-pin to move upwards, and reaches when shaping impression eventually and corresponding to
Stop after accumulation of metal band, forming center of die cavity is directed at accumulation of metal band center eventually at this time；Liftout tank ejects again, and drive is tiltedly carved
It moves downward again and struts seperated punch-pin, until seperated punch-pin is strutted completely, left punch-pin and right punch-pin radial motion extrusion cylinder
Internal wall, accumulation of metal band are entered in forming impression eventually by lateral compression force flow, form final required forming inner ring muscle, liftout tank
Stop motion, cavity plate continue to rotate；Finally, liftout tank uplink, drives oblique carve to move up reset, left punch-pin and right punch-pin radially close
It closes, completes the deformation of two passages；
S3 forming terminates: rotating device stops that cavity plate and cylindrical member is driven to stop, and extruder uplink takes away seperated punch-pin recessed
Mould.
2. the combined shaping method of staged rotary squeezing inner ring muscle as described in claim 1, it is characterised in that: the mold is also
Including the liftout attachment for being detached from cylindrical member blank from cavity plate, be about in step s3, on extruder seperated punch-pin take away it is recessed
After mould, the cylindrical member rested in cavity plate is ejected upwards by liftout attachment, completes demoulding；Finally again toward concave die cavity, fission
Punch-pin coating lubricating oil carries out next cylindrical member blank inner ring muscle rotary extrusion forming process.
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| CN201910969784.1A CN110523792B (en) | 2019-10-12 | 2019-10-12 | Composite forming method for stepped rotary extrusion of inner ring rib |
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| CN112453087A (en) * | 2020-09-30 | 2021-03-09 | 中北大学 | Movable rotary driving device and multi-motion-form pressing-twisting combined loading extrusion equipment |
| CN112517816A (en) * | 2020-10-16 | 2021-03-19 | 中北大学 | Bidirectional intermittent differential upsetting composite extrusion forming method for outer longitudinal rib cylindrical part |
| CN112692088A (en) * | 2020-12-23 | 2021-04-23 | 北京航星机器制造有限公司 | Barrel component hot extrusion die and forming method |
| CN113182474A (en) * | 2021-04-09 | 2021-07-30 | 中北大学 | Forming method of cylinder workpiece with transverse inner ribs |
| CN113600634A (en) * | 2021-08-04 | 2021-11-05 | 中北大学 | Extrusion forming method for cylindrical part with boss in shape |
| CN113600633A (en) * | 2021-08-04 | 2021-11-05 | 中北大学 | Extrusion forming die for cylindrical part with boss in appearance |
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