CN109894562A - A kind of barrel-shaped thin-wall part demoulding integrated mould of the high muscle of inner wall grid and manufacturing process - Google Patents
A kind of barrel-shaped thin-wall part demoulding integrated mould of the high muscle of inner wall grid and manufacturing process Download PDFInfo
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- CN109894562A CN109894562A CN201910251566.4A CN201910251566A CN109894562A CN 109894562 A CN109894562 A CN 109894562A CN 201910251566 A CN201910251566 A CN 201910251566A CN 109894562 A CN109894562 A CN 109894562A
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Abstract
The invention discloses a kind of barrel-shaped thin-wall part demoulding integrated mould of high muscle of inner wall grid and manufacturing process, wherein the mold includes punch-pin and cavity plate；Wherein, the punch-pin includes punch-pin mandrel and muti-piece punch insert；The diameter of the periphery of the punch-pin mandrel is gradually reduced from top to bottom end；Muti-piece punch insert forms the periphery that a cylindrical sleeve is set to punch-pin mandrel；The outer surface of punch insert offers several circumferential muscle slots and several vertical muscle slots, several circumferential muscle slots and several vertical muscle slots are staggered to form several net blocks；Die case is set to the periphery of punch-pin.The problems such as present invention is to solve the at high cost of the existing manufacturing process of the barrel-shaped structural member of such metal (such as heavy wall bucket is machined into high muscle, is fixed on high rib on plate by welding or riveting mode), complex procedures realizes the monolithic molding of the barrel-shaped component of the large-scale high muscle of inner wall grid.
Description
Technical field
The invention belongs to the barrel-shaped thin-wall part technical field of the high muscle of inner wall grid more particularly to the barrel-shaped thin-walleds of the high muscle of inner wall grid
Part demoulds integrated mould and manufacturing process.
Background technique
As China's economic globalization process is constantly accelerated, either aerospace or automobile, reduce energy consumption and
Payload is improved, large-sized structural parts lightweight has become one of research hotspot.For market-ripe application metal material,
While guaranteeing same structural strength, mitigate the weight of plate, it is directly effective that ribbed structural parts have become achievable lightweight
There is inner cavity depth and the barrel shaped structure part in the stiffener plate of network are distributed in approach, therefore, large-tonnage product.In order to realize
The preparation of such structural member is machined for thin-walled drum using welding processing, cast member, thick cylinder spinning system at present
It is standby, it is imperfect to there is band muscle portion bit stream line, it is difficult to effective loss of weight；Poor to neutrality, deformation of products amount is big, is not able to satisfy high-precision and wants
It asks；Easily there is defect, internal fatigue behaviour and anti-stress corrosion performance decline to a great extent, and mechanical property is difficult to reach requirement,
Service life is severely impacted；Process-cycle is long, and stock utilization is low, and manufacturing cost is high.It is accordingly answered in addition, being also easy to produce
Power is concentrated and leads to stability reduction or even breakoff phenomenon during long service.Therefore the prior art be badly in need of one kind can be big
Amplitude reduction production cost shortens the lead time while obtaining the monolithic molding mold of the high muscle drum of superperformance inner wall grid
And manufacturing process.
Summary of the invention
Technical problem solved by the present invention is it is barrel-shaped to have overcome the deficiencies of the prior art and provide a kind of high muscle of inner wall grid
Thin-wall part demoulds integrated mould and manufacturing process, to solve existing manufacturing process (such as heavy wall of the barrel-shaped structural member of such metal
Bucket is machined into high muscle, is fixed on high rib on plate by welding or riveting mode) at high cost, complex procedures etc. ask
Topic realizes the monolithic molding of the barrel-shaped component of the large-scale high muscle of inner wall grid.
The object of the invention is achieved by the following technical programs: it is according to an aspect of the present invention, provide a kind of inner wall
The barrel-shaped thin-wall part of the high muscle of grid demoulds integrated mould, characterized by comprising: punch-pin and cavity plate；Wherein, the punch-pin includes
Punch-pin mandrel and muti-piece punch insert；The diameter of the periphery of the punch-pin mandrel is gradually reduced from top to bottom end；Muti-piece punch-pin
Insert forms the periphery that a cylindrical sleeve is set to punch-pin mandrel；If the outer surface of punch insert offer several circumferential muscle slots and
Dry vertical muscle slot, several circumferential muscle slots and several vertical muscle slots are staggered to form several net blocks；Die case is set to
The periphery of punch-pin.
In the barrel-shaped thin-wall part demoulding integrated mould of the above-mentioned high muscle of inner wall grid, the bottom end of the punch-pin mandrel be provided with
The equal sliding block of punch insert quantity, opens up on the inside of each punch insert fluted, and each sliding block of punch-pin mandrel is embedded at
In corresponding groove.
In the above-mentioned barrel-shaped thin-wall part demoulding integrated mould of the high muscle of inner wall grid, the width of each sliding block is each punch-pin edge
The 1/3-1/4 of block inner surface arc length, so that sliding block has enough intensity and rigidity when punch-pin mandrel rises.
In the barrel-shaped thin-wall part demoulding integrated mould of the above-mentioned high muscle of inner wall grid, the cross section of the sliding block from upper end on earth
End is gradually increased, and the lateral arcs of cross section are long long greater than inside arc；When so that punch-pin mandrel rising, the sliding block passes through corresponding
Groove squeeze corresponding punch insert to the center of punch-pin mandrel so that each punch insert being capable of horizontal direction center
It draws close, avoids punch insert from separating with inner wall grid ribs aluminium alloy material and destruction is generated to muscle.
In the above-mentioned barrel-shaped thin-wall part demoulding integrated mould of the high muscle of inner wall grid, the circumferential direction muscle slot and the vertical muscle slot
All have pattern draft.
According to another aspect of the present invention, also a kind of mold according to as described in an aspect of of the present present invention is hot extruded into
Shape method, described method includes following steps:
Cavity plate is placed on the outer surface of punch-pin by step 1, and the punch-pin mandrel of punch-pin is connected with the upper mounting plate of forging equipment
It connects, aluminium alloy material is put between punch insert and cavity plate；
Step 2 drives punch insert axis to move downward, passes through the outer surface of punch-pin mandrel using the upper mounting plate of forging equipment
Extruding to the inner surface of punch insert so that punch insert moves horizontally outward so that punch insert to aluminium alloy material into
Row squeezes and brings it about plastic deformation；
Step 3 carries out pressure maintaining after forging equipment reaches setting pressure, until aluminium alloy stream enters circumferential muscle slot and erects
Into muscle slot, until the forming of inner wall grid ribs；
Step 4, after the completion of forming, punch-pin mandrel is with the upward backhaul of forging equipment, side table of the sliding block side surface to groove
The lateral pressure that face applies will be converted to horizontal banks and straight up component, since die plate insert horizontal can only move
Dynamic, the side surface of horizontal banks compressing groove is drawn close to center, between the outer surface of sliding block and the inner surface of groove between
Gap is gradually closed, and the sliding block of punch-pin mandrel drives punch insert horizontal direction center to draw close, so that punch insert and inner wall grid ribs
Be automatically separated, obtain the barrel-shaped thin-wall part of the high muscle of inner wall grid.
In above-mentioned thermal extrusion moulding method, in step 2, the upper mounting plate of forging equipment drives punch insert axis to move downward
Speed be 1~5mm/s.
In above-mentioned thermal extrusion moulding method, in step 3, pressure is set as 2000-15000N, the dwell time is 10~
90s。
In above-mentioned thermal extrusion moulding method, in step 3, height >=3mm of inner wall grid ribs.
In above-mentioned thermal extrusion moulding method, in step 4, the sliding block section projected area of punch-pin mandrel from the top down by
It is cumulative to add, while outer end arc length is greater than inside arc length, keeps clearance fit relationship with the groove of punch insert；The outer surface of sliding block
There is gap between the inner surface of groove, while keeping matching relationship between the side surface of sliding block and the side surface of groove.
Compared with prior art, the present invention has the following advantages:
The present invention radially fills principle using axially loaded, and overall processing goes out inner wall grid ribs structure, realize thin-walled to
Perpendicular to the centripetal flow in plate thickness direction, the geometry matching relationship of mandrel and punch insert is then utilized, punch-pin when backhaul
Automatic demoulding is realized in the centripetal movement of insert.This method does not need subsequent machining to cut off clout, reduces human cost and original
The problem of material cost, the muscle wall after forming are integrally formed, and being not present to weld influences plate surface form accuracy, poor reliability,
Reduce the processes such as machining, welding or riveting simultaneously, reduces production cost, shorten the production cycle.Not only realize bucket
Shape part lightweight controllably manufactures effective way, can also improve the mechanical performances such as the anti-fatigue performance of plate.The present invention is formed thereby out
Band muscle drum product after Overheating Treatment, the recrystallized structure of As-extruded can be transformed by the open grain structure of as cast condition, not only
The intensity for increasing thin plate meets light-weighted demand, be obviously improved the mechanical property of plate can, realizes material
Control shape control.In addition, improving 50% than existing machinery processing method stock utilization, manufacturing cost reduces by 50%, processing effect
Rate improves 30%.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the structural representation of the barrel-shaped thin-wall part demoulding integrated mould of the high muscle of inner wall grid provided in an embodiment of the present invention
Figure；
Fig. 2 (a) is a structural schematic diagram of punch-pin mandrel provided in an embodiment of the present invention；
Fig. 2 (b) is another structural schematic diagram of punch-pin mandrel provided in an embodiment of the present invention；
Fig. 3 (a) is a schematic diagram of punch insert provided in an embodiment of the present invention；
Fig. 3 (b) is another schematic diagram of punch insert provided in an embodiment of the present invention；
Fig. 3 (c) is another schematic diagram of punch insert provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of cavity plate provided in an embodiment of the present invention；
Fig. 5 is showing for the inner wall grid barrel-shaped thin-wall part extrusion molding numerical simulation result of high muscle provided in an embodiment of the present invention
It is intended to.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is the structural representation of the barrel-shaped thin-wall part demoulding integrated mould of the high muscle of inner wall grid provided in an embodiment of the present invention
Figure；Fig. 2 (a) is a structural schematic diagram of punch-pin mandrel provided in an embodiment of the present invention；Fig. 2 (b) is that the embodiment of the present invention mentions
Another structural schematic diagram of the punch-pin mandrel of confession；Fig. 3 (a) is a signal of punch insert provided in an embodiment of the present invention
Figure；Fig. 3 (b) is another schematic diagram of punch insert provided in an embodiment of the present invention；Fig. 3 (c) is that the embodiment of the present invention provides
Punch insert another schematic diagram；Fig. 4 is the schematic diagram of cavity plate provided in an embodiment of the present invention.
As shown in Figure 1, Figure 2 shown in (a), Fig. 2 (b), Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) and Fig. 4, the high muscle of inner wall grid is barrel-shaped
It includes: punch-pin 1 and cavity plate 2 that thin-wall part, which demoulds integrated mould,；Wherein, the punch-pin 1 includes punch-pin mandrel 11 and muti-piece punch-pin
Insert 12；The diameter of the periphery of the punch-pin mandrel 11 is gradually reduced from top to bottom end；Muti-piece punch insert 12 forms one
Cylindrical sleeve is set to the periphery of punch-pin mandrel 11；The outer surface of punch insert 12 offers several circumferential muscle slots 122 and several
Vertical muscle slot 123, several circumferential muscle slots 122 and several vertical muscle slots 123 are staggered to form several net blocks；Cavity plate 2
It is sheathed on the periphery of punch-pin 1.Radial distance between the outer surface of punch insert 12 and the inner surface of cavity plate 2 is greater than shaped article
The height of muscle；The extrusion forming method pushes the punch insert 12 with gradient using the punch-pin mandrel 11 with gradient, axial
Power is converted into radial force, realizes radial compression.
As shown in Fig. 2 (a) to Fig. 3 (c), the bottom end of punch-pin mandrel 11 is provided with the sliding block equal with 12 quantity of punch insert
111, the inside of each punch insert 12 opens up fluted 121, and each sliding block 111 of punch-pin mandrel 11 is embedded at corresponding recessed
In slot 121；11 sliding block 111 of punch-pin mandrel and 12 upper groove of punch insert, 121 clearance fit, sliding block 111 and groove 121 when extruding
Do not interfere and be mutually shifted, when punch-pin mandrel 11 rises when demoulding, sliding block 111 drives 12 horizontal direction center of punch insert to gather, real
Existing automatic demoulding.
As shown in Fig. 2 (a) and Fig. 2 (b), the sliding block 111 of the punch-pin mandrel 11 of mold is symmetrical around punch-pin mandrel 11,
The lower end in punch-pin mandrel 11, quantity is corresponding with the quantity of punch insert 12, and the width of sliding block 111 is table in punch insert 12
The 1/3-1/4 of face arc length, to guarantee that sliding block 111 has enough intensity and rigidity when punch-pin mandrel 11 rises.
The cross section of sliding block 111 is gradually increased from upper end to bottom end, and the lateral arcs of cross section are long long greater than inside arc；So that
When punch-pin mandrel 11 rises, the sliding block 111 is squeezed by corresponding groove 121 to the center of punch-pin mandrel 11 corresponding
Punch insert 12 so that each punch insert 12 can horizontal direction center draw close, avoid punch insert 12 and inner wall grid
The separation of muscle aluminium alloy material generates destruction to muscle.
The circumferential muscle slot 122 and vertical muscle slot 123 of the punch insert 12 of mold have pattern draft, are conducive to rib and demould.
Required load is substantially reduced in this way, while can also shape degree of precision rib.
This implementation additionally provides a kind of according to the barrel-shaped thin-wall part demoulding integrated mould progress hot extrusion of the high muscle of inner wall grid
Manufacturing process, this method comprises the following steps:
Cavity plate 2 is placed on the outer surface of punch-pin 1, the upper mounting plate phase of the punch-pin mandrel 11 and forging equipment of punch-pin 1 by step 1
Connection, aluminium alloy material is put between punch insert 12 and cavity plate 2；
Step 2 drives punch-pin mandrel 11 to move downward, passes through the outer of punch-pin mandrel 11 using the upper mounting plate of forging equipment
Surface is to the extruding of the inner surface of punch insert 12 so that punch insert 12 moves horizontally, so that punch insert 12 closes aluminium
Gold material, which squeeze, brings it about plastic deformation；
Step 3, when forging equipment reaches setting pressure, (pressure can choose 2000-15000N, can also be according to specific
Situation determines) after, pressure maintaining is carried out, until aluminium alloy stream enters in circumferential muscle slot 122 and vertical muscle slot 123, until inner wall grid
The forming of muscle；
The 111 section projected area of sliding block of step 4, punch-pin mandrel 11 gradually increases from the top down, while outer end arc length is big
In interior survey arc length, clearance fit relationship is kept with the groove 121 of punch insert 12, punch-pin mandrel 12 is with the upward backhaul of forging equipment
When, drive the sliding block 111 of punch-pin mandrel 11 to move up.Due to after hot forming in the outer surface of sliding block 111 1111 and groove 121
There is certain interval between surface 1121, while being kept between the side surface 1112 of sliding block 111 and the side surface 1212 of groove 121
Matching relationship.After the completion of hot forming, punch-pin mandrel 11 starts to be gradually increasing, at this point, the side surface 1112 of sliding block 111 is to groove
The lateral pressure that 121 side surface 1212 applies will be converted to horizontal banks and straight up component, due to female die embedding
Block can only move horizontally, and the side surface 1212 of horizontal banks compressing groove 121 is drawn close to center, the outer surface of sliding block 111
Gap between 1111 and the inner surface 1121 of groove 121 is gradually closed, and the sliding block 111 of punch-pin mandrel 11 drives punch insert 12
Horizontal direction center is drawn close, and initial engagement state is reduced into, and completion punch insert 12 is automatically separated with inner wall grid ribs, realizes certainly
Dynamic knockout course.
In the step 1, the barrel-shaped material of aluminium alloy is outer diameter and 2 internal diameter clearance fit of cavity plate after machining.
In the step 2, hot forming speed is 1~5mm/s, and at such speeds, material occurs slowly uniform plasticity and becomes
Shape can increase the height of forming muscle, avoid the defects of folding at grid.
In the step 3, forging equipment command displacement, and the dwell time is 10~90s, be may be implemented to hot formed
Hot sizing process increases structural stability to reduce residual stress.
The barrel-shaped section of the barrel-shaped thin-wall part of the high muscle of inner wall grid is round, oval and convex polygon section, at the beginning of barrel-shaped blank
Begin with a thickness of 5-20mm.Grid reinforcing rib height >=the 3mm prepared.
Embodiment 1:
As shown in Fig. 1~5, mold mainly includes combined type punch-pin 1 (punch-pin mandrel and muti-piece punch insert), cavity plate 2, institute
The material of selection is low heat-resisting high-ductility steel 5CrMnMo, through Overheating Treatment, has enough intensity, hardness and wear-resisting property, group
Box-like punch-pin is divided into punch-pin mandrel 11 and punch insert 12, and the upper and lower surface of combined type punch-pin 1 and cavity plate 2 is level.Punch-pin
Mandrel 11 and 12 contact surface of punch insert will be designed to wedge mechanism, and surface is by polishing, polishing treatment, punch-pin, molding surface
Roughness Ra 0.8, punch-pin mandrel 11 and punch insert 12 will be designed to band gradient matching relationship, and angle is 2 ° -5 °.Punch-pin mandrel
121 clearance fit of groove of 11 sliding block 111 and punch insert 12, sliding block 111 and groove 121 do not interfere mutual shifting when extruding
It is dynamic.The sliding block 111 of punch-pin mandrel 11 is symmetrical around punch-pin mandrel 11, is located at lower end, quantity and punch-pin in punch-pin mandrel 11
The quantity of insert 12 is corresponding, and whole circumferential direction width is the 1/2-1/3 of 12 inner surface arc length of punch insert, to guarantee on mandrel 11
Sliding block 111 has enough intensity and rigidity when rising.111 structure of sliding block of punch-pin mandrel 11 is up-narrow and down-wide, interior narrow outer width, to protect
When mandrel 11 rises, punch insert 12 can be drawn close card with horizontal direction center, avoid punch insert 12 and inner wall grid ribs barrel-shaped
Material separation generates destruction to muscle.The pattern draft of muscle slot is 2 ° on the punch insert of the mold, and radius of corner 5mm is conducive to
Rib demoulding.Required load is substantially reduced in this way, while can also shape degree of precision rib.
In use, 5A06 aluminum alloy blank is put into cavity plate 2 and punch insert 12, it is right using punch-pin mandrel 11
The pressure of punch insert 12 forces punch insert 12 to move horizontally, and blank is extruded in extrusion process, be depressed into punch-pin mandrel 11 with
12 bottom of punch insert is concordant, while punch insert 12 and the cavity filling after the cooperation of cavity plate 2 being expired, final to realize hot extrusion essence
Really forming, product stability get a promotion.During hot-pressed, the design of the muscle slot 122 on punch insert 12 can be with
The air near closed hollow ring after punch insert 12 and cavity plate 2 are cooperated is discharged, and reduces the generation of defect, improves hot extrusion beading end
Portion's surface property.After the completion of hot extrusion, punch-pin mandrel 11 is moved upwards, and punch insert 12 is drawn close to punch-pin mandrel 11, inner wall net
The high muscle hot extrusion process of lattice is completed.The high rib of thin-walled grid after will be hot-pressed is transferred to subsequent handling, thermally treated, mechanical
The processes such as processing, are finally processed as the barrel-shaped thin-wall part finished product of the high muscle of inner wall grid.
Embodiment 2:
As shown in Fig. 1~5, mold mainly includes combined type punch-pin 1 (punch-pin mandrel and muti-piece punch insert), cavity plate 2, institute
The material of selection is low heat-resisting high-ductility steel 5CrMnMo, through Overheating Treatment, has enough intensity, hardness and wear-resisting property, group
Box-like punch-pin is divided into punch-pin mandrel 11 and punch insert 12, and the upper and lower surface of combined type punch-pin 1 and cavity plate 2 is level.Punch-pin
Mandrel 11 and 12 contact surface of punch insert will be designed to wedge mechanism, and surface is by polishing, polishing treatment, punch-pin, molding surface
Roughness Ra 0.8, punch-pin mandrel 11 and punch insert 12 will be designed to band gradient matching relationship, and angle is 2 ° -5 °.Punch-pin mandrel
121 clearance fit of groove of 11 sliding block 111 and punch insert 12, sliding block 111 and groove 121 do not interfere mutual shifting when extruding
It is dynamic.The sliding block 111 of punch-pin mandrel 11 is symmetrical around punch-pin mandrel 11, is located at lower end, quantity and punch-pin in punch-pin mandrel 11
The quantity of insert 12 is corresponding, and whole circumferential direction width is the 1/2-1/3 of 12 inner surface arc length of punch insert, to guarantee on mandrel 11
Sliding block 111 has enough intensity and rigidity when rising.111 structure of sliding block of punch-pin mandrel 11 is up-narrow and down-wide, interior narrow outer width, to protect
When mandrel 11 rises, punch insert 12 can be drawn close card with horizontal direction center, avoid punch insert 12 and inner wall grid ribs barrel-shaped
Material separation generates destruction to muscle.The pattern draft of muscle slot is 2 ° on the punch insert of the mold, and radius of corner 6mm is conducive to
Rib demoulding.Required load is substantially reduced in this way, while can also shape degree of precision rib.
In use, AZ31 magnesium alloy blank is put into cavity plate 2 and punch insert 12, it is right using punch-pin mandrel 11
The pressure of punch insert 12 forces punch insert 12 to move horizontally, and blank is extruded in extrusion process, be depressed into punch-pin mandrel 11 with
12 bottom of punch insert is concordant, while punch insert 12 and the cavity filling after the cooperation of cavity plate 2 being expired, final to realize hot extrusion essence
Really forming, product stability get a promotion.During hot-pressed, the design of the muscle slot 122 on punch insert 12 can be with
The air near closed hollow ring after punch insert 12 and cavity plate 2 are cooperated is discharged, and reduces the generation of defect, improves hot extrusion beading end
Portion's surface property.After the completion of hot extrusion, punch-pin mandrel 11 is moved upwards, and punch insert 12 is drawn close to punch-pin mandrel 11, inner wall net
The high muscle hot extrusion process of lattice is completed.The high rib of thin-walled grid after will be hot-pressed is transferred to subsequent handling, thermally treated, mechanical
The processes such as processing, are finally processed as the barrel-shaped thin-wall part finished product of the high muscle of inner wall grid.
Principle is radially filled using axially loaded using the method for the present invention, overall processing goes out inner wall grid ribs structure, realizes
Then thin-walled utilizes the geometry matching relationship of mandrel and punch insert to the centripetal flow perpendicular to plate thickness direction, return
Automatic demoulding is realized in the centripetal movement of punch insert when journey.The design method directly can effectively realize oneself of extrusion forming process
Dynamic demoulding, solves the bottleneck problem of the technological development.Furthermore, it is not necessary that subsequent machining reduces manpower to cut off clout
Cost and cost of material, the muscle wall after forming are integrally formed, and there is no welding to influence plate surface form accuracy, poor reliability
The problem of, while reducing the processes such as machining, welding or riveting, production cost is reduced, the production cycle is shortened.Not only
It realizes that drum lightweight controllably manufactures effective way, can also improve the mechanical performances such as the anti-fatigue performance of plate.Use this hair
Bright a kind of barrel-shaped thin-wall part extrusion molding of the high muscle of inner wall grid and demoulding integrated mould design method, band muscle out formed thereby
Drum product can be transformed into the recrystallized structure of As-extruded by the open grain structure of as cast condition, not only increased after Overheating Treatment
The intensity of thin plate meets light-weighted demand, be obviously improved the mechanical property of plate can, realizes the control shape of material
Control property.In addition, improving 50% than existing machinery processing method stock utilization, manufacturing cost reduces by 50%, and processing efficiency improves
30%.
Embodiment described above is the present invention more preferably specific embodiment, and those skilled in the art is in this hair
The usual variations and alternatives carried out in bright technical proposal scope should be all included within the scope of the present invention.
Claims (10)
1. a kind of barrel-shaped thin-wall part of the high muscle of inner wall grid demoulds integrated mould, characterized by comprising: punch-pin (1) and cavity plate
(2)；Wherein,
The punch-pin (1) includes punch-pin mandrel (11) and muti-piece punch insert (12)；
The diameter of the periphery of the punch-pin mandrel (11) is gradually reduced from top to bottom end；Muti-piece punch insert (12) forms one
Cylindrical sleeve is set to the periphery of punch-pin mandrel (11)；The outer surface of punch insert (12) offer several circumferential muscle slots (122) and
Several vertical muscle slots (123), several circumferential muscle slots (122) and several vertical muscle slots (123) be staggered to be formed it is several
A net block；
Cavity plate (2) is sheathed on the periphery of punch-pin (1).
2. the barrel-shaped thin-wall part of the high muscle of inner wall grid according to claim 1 demoulds integrated mould, it is characterised in that: described
The bottom end of punch-pin mandrel (11) is provided with the sliding block equal with punch insert (12) quantity (111), each punch insert (12)
Inside opens up fluted (121), and each sliding block (111) of punch-pin mandrel (11) is embedded in corresponding groove (121).
3. the barrel-shaped thin-wall part of the high muscle of inner wall grid according to claim 2 demoulds integrated mould, it is characterised in that: each
The width of sliding block (111) is the 1/3-1/4 of each punch insert (12) inner surface arc length, so that when punch-pin mandrel (11) rise
Sliding block (111) has enough intensity and rigidity.
4. the barrel-shaped thin-wall part of the high muscle of inner wall grid according to claim 2 demoulds integrated mould, it is characterised in that: described
The cross section of sliding block (111) is gradually increased from upper end to bottom end, and the lateral arcs of cross section are long long greater than inside arc；So that punch insert
When axis (11) rises, the sliding block (111) is squeezed by corresponding groove (121) to the center of punch-pin mandrel (11) corresponding
Punch insert (12) so that each punch insert (12) can horizontal direction center draw close, avoid punch insert (12) with
The separation of inner wall grid ribs aluminium alloy material generates destruction to muscle.
5. the barrel-shaped thin-wall part of the high muscle of inner wall grid according to claim 2 demoulds integrated mould, it is characterised in that: described
Circumferential muscle slot (122) and the vertical muscle slot (123) all have pattern draft.
6. a kind of carry out thermal extrusion moulding method according to mold according to any one of claims 1 to 5, which is characterized in that institute
The method of stating includes the following steps:
Cavity plate (2) is placed on the outer surface of punch-pin (1) by step 1, by the upper of the punch-pin mandrel (11) of punch-pin (1) and forging equipment
Platform is connected, and aluminium alloy material is put between punch insert (12) and cavity plate (2)；
Step 2 drives punch-pin mandrel (11) to move downward, passes through the outer of punch-pin mandrel (11) using the upper mounting plate of forging equipment
Surface is to the extruding of the inner surface of punch insert (12) so that punch insert (12) moves horizontally outward, so that punch insert
(12) aluminium alloy material squeeze and bring it about plastic deformation；
Step 3, when forging equipment reach setting pressure after, carry out pressure maintaining, until aluminium alloy stream enter circumferential muscle slot (122) and
In vertical muscle slot (123), until the forming of inner wall grid ribs；
Step 4, after the completion of forming, punch-pin mandrel (11) is with the upward backhaul of forging equipment, and sliding block side surface (1112) are to groove
(121) lateral pressure that side surface (1212) applies will be converted to horizontal banks and straight up component, due to recessed
Mould insert can only move horizontally, and side surface (1212) Xiang Zhongxin of horizontal banks compressing groove (121) is drawn close, sliding block
(111) gap between the inner surface (1121) of outer surface (1111) and groove (121) is gradually closed, punch-pin mandrel (11)
Sliding block (111) drives punch insert (12) horizontal direction center to draw close, so that automatic point of punch insert (12) and inner wall grid ribs
From obtaining the barrel-shaped thin-wall part of the high muscle of inner wall grid.
7. thermal extrusion moulding method according to claim 6, which is characterized in that in step 2, the upper of forging equipment is put down
The speed that platform drives punch-pin mandrel (11) to move downward is 1~5mm/s.
8. thermal extrusion moulding method according to claim 6, which is characterized in that in step 3, set pressure as 2000-
15000N, dwell time are 10~90s.
9. thermal extrusion moulding method according to claim 6, which is characterized in that in step 3, the height of inner wall grid ribs
Degree >=3mm.
10. thermal extrusion moulding method according to claim 6, which is characterized in that in step 4, punch-pin mandrel (11)
Sliding block (111) section projected area gradually increases from the top down, while outer end arc length is greater than inside arc length, with punch insert (12)
Groove (121) keep clearance fit relationship；
There is gap, while sliding block between the outer surface (1111) of sliding block (111) and the inner surface (1121) of groove (121)
(111) matching relationship is kept between the side surface (1212) of side surface (1112) and groove (121).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251566.4A CN109894562A (en) | 2019-03-29 | 2019-03-29 | A kind of barrel-shaped thin-wall part demoulding integrated mould of the high muscle of inner wall grid and manufacturing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251566.4A CN109894562A (en) | 2019-03-29 | 2019-03-29 | A kind of barrel-shaped thin-wall part demoulding integrated mould of the high muscle of inner wall grid and manufacturing process |
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| CN111604421A (en) * | 2020-05-07 | 2020-09-01 | 上海交通大学 | Flow spinning forming die for cylindrical part with crossed ribs |
| CN112620494A (en) * | 2020-11-27 | 2021-04-09 | 北京航星机器制造有限公司 | Multidirectional hot extrusion split combined die for machining thin-wall high-rib circular arc plate component |
| CN112916782A (en) * | 2021-02-07 | 2021-06-08 | 哈尔滨工业大学 | Local progressive loading precision forming die and method for ultra-long thin web high-rib complex component with local abrupt change characteristics |
| CN114273520A (en) * | 2021-12-01 | 2022-04-05 | 中北大学 | Drawing forming die for cylindrical part with internal grid ribs and using method thereof |
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| CN114273520A (en) * | 2021-12-01 | 2022-04-05 | 中北大学 | Drawing forming die for cylindrical part with internal grid ribs and using method thereof |
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