CN104801598B - A kind of titanium alloy thin wall Complex Different Shape annular workpieces expanding die - Google Patents

A kind of titanium alloy thin wall Complex Different Shape annular workpieces expanding die Download PDF

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CN104801598B
CN104801598B CN201510197511.1A CN201510197511A CN104801598B CN 104801598 B CN104801598 B CN 104801598B CN 201510197511 A CN201510197511 A CN 201510197511A CN 104801598 B CN104801598 B CN 104801598B
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punch
die
mandrel
support
annular workpieces
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CN201510197511.1A
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CN104801598A (en
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郭良刚
高冰
杨合
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西北工业大学
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Abstract

A kind of titanium alloy thin wall Complex Different Shape annular workpieces expanding die, including mandrel, n support, n punch, die and base.At n the slide rail that be evenly distributed in the upper surface of base, each support is inlaid on each slide rail respectively, is combined into the assembly of circle.The smaller diameter end of mandrel is positioned at described assembly, and fits with the inner surface of each support.N punch is separately fixed on each support.Two semicircular die lobes are to synthesizing the die of circle and being sleeved on the outer surface of each punch;The inner surface of described die and the outer surface of described punch are the forming face of workpiece.The present invention is materials plastic forming to be leaned on when shaping Special-shaped annular workpiece, thus increases the surface abrasion resistance of part, improves the service life of part, and has saved material, and the precision of the annular workpieces that can make corrections.The uniformity of accessory size, precision is ensure that man-hour in continuous repeatedly adding.

Description

A kind of titanium alloy thin wall Complex Different Shape annular workpieces expanding die

Technical field

The present invention relates to plastic working field, be a kind of titanium alloy thin wall Complex Different Shape annular workpieces expanding die.

Background technology

The conventional manufacture method of Special-shaped annular workpiece has roll off, bulging and cutting, present invention alloy special-shaped titanium formed thereby ring For thin-wall complicated Special-shaped annular workpiece, be abnormity inside and outside annular workpieces and wall thickness be more uniform, annular workpieces roll off due to Technique and equipment limit and are difficult to shape the type annular workpieces, and for the thinnest Special-shaped annular workpiece of wall thickness, rigidity Poor, unstable phenomenon easily occurs during roll off, causes shaping or final circularity can not be guaranteed, and And owing to being affected by rolling mill practice and equipment limitation, its dimensional accuracy is the highest, only at ring shape of rolling piece relatively In the case of preferable and equipment performance is more excellent, its dimensional accuracy can be only achieved the 3 ‰~5 ‰ of corresponding size;Use Cutting process processes the type annular workpieces, wastes material, and can destroy metal streamline, and performance is difficult to ensure card;Use swollen Shape method shapes the type annular workpieces, will not produce waste of material, and annular workpieces quality is good, precision is high.

Chinese invention patent specification CN101367104A disclosed in 18 days February in 2009 discloses a kind of steamer and sends out Motor shroud ring external fluid infusion hydraulic pressure expanding and reinforcing process, makes retaining ring produce to be plastically deformed under fluid pressure effect and carry out bulging, Thus strengthen retaining ring, improve precision, but the method is the flexible contact by liquid Yu annular workpieces inner surface carrys out cold expanding shape Rectangular loop workpiece, is only applicable to the material that bulging resistance of deformation is little, is not suitable for the difficult deformation such as annular titanium alloy workpiece The Thermal expansion of material.Han Xiu congruence carried out TC4 titanium alloy cylindrical part segmental mandrel heat expansion forming process studying (Han Xiuquan, Zhang Tao, Fu Mingjie, Ma Yan, Huang Chun .TC4 titanium alloy cylindrical part divides lobe heat expansion forming process to study. aeronautical manufacture skill Art .2014.4), by the precision improving rectangular loop workpiece of segmental mandrel Thermal expansion, but it can not shape Special-shaped annular work Part.Chinese invention patent specification CN102489596A disclosed in 24 days November in 2011 discloses a kind of titanium alloy Rectangular loop workpiece heat expansion forms the method for Special-shaped annular workpiece, and rectangular loop workpiece is under the effect of punch, and bulging becomes For taper annular workpieces, and by the rotation of annular workpieces, repeatedly bulging, improve the precision of annular workpieces, but the party Method only has punch, can only shape the annular workpieces of the simple in construction such as taper, rectangle, it is impossible to more complicated different of shaped structure Shape annular workpieces, and annular workpieces outer surface precision is relatively low.

Summary of the invention

For overcome present in prior art can not the more complicated Special-shaped annular workpiece of shaped structure, and outside annular workpieces The deficiency that surface accuracy is relatively low, the present invention proposes the expanding die of a kind of annular workpieces.

The present invention includes mandrel, n support, n punch, die and base;Being evenly distributed in the upper surface of described base N slide rail, the radial direction that trend is this base of each slide rail;The chute of described each support lower surface respectively be positioned at base Each slide rail of upper surface is fitted together to, and is combined into the assembly of circle;The smaller diameter end of cone mandrel is positioned at described group In fit, and fit with the inner surface of each support;Spacing between lower surface and the upper surface of base of described mandrel is The 1/3 of described support vertical height;N punch is separately fixed on each support;Two semicircular die lobes are to synthesis For circular die the outer surface that is sleeved on each punch;The inner surface of described die and the outer surface of described punch are The forming face of workpiece;The internal diameter of the diameter=blank of the thickness+mandrel of the support of the thickness+present position of described punch.

Angle between described mandrel surface and this mandrel center line is 5~10 °.

Described from the inner surface of the assembly of n holder combination be the inclined-plane coordinated with mandrel outer surface;Described Frame is made up of vertical plate and one block of level board of one piece of arc, and this vertical plate is positioned at one end of level board upper surface, The chute of this level board length direction through, this chute and base is had at the center of described level board lower surface length direction The slide rail of upper surface coordinates;Two surfaces of described vertical plate are curved surface, the curvature phase of the curvature of this curved surface and mandrel With, after n holder combination becomes the assembly of circle, by a surface composition of each vertical plate with described mandrel Outer surface coordinate assembly inner surface;The inner surface of described assembly is the inclined-plane coordinated with mandrel outer surface;? Connecting hole is had on described vertical plate;

Described vertical plate dual-side is the hypotenuse that angle is identical with the dual-side of level board, and making described support is sector;Should Fan-shaped angle beta is determined by formula (2)

&beta; < 2 arcsin [ R - S R sin ( 180 n ) ] - - - ( 2 )

In formula (2), R is punch outer surface minimum profile curvature radius, and S is the most total displacement of punch, and n is for dividing Lobe number, β is punch outer surface camber line angle.

There is through core axle hole at the center of described base, and the diameter of this core axle hole is identical with the diameter of mandrel larger diameter end.

It is step-like for forming the surface that two concave surface lobes of described die combine, and defines for two semicircular ring mutual Chimeric seam.

Described punch is the bulk of arc, and the curvature of the inner surface of this punch is identical with the curvature of rack outer surface, and this is convex The shape of mould outer surface need to be consistent with annular workpieces forming requirements.

The present invention is by carrying out bulging to rectangular titanium alloy shape workpiece, it is thus achieved that the thin-wall complicated special-shaped ring that the accuracy of form and position is high Shape workpiece.

Mandrel in the present invention is in cone and is sleeved in the space that support surrounds, and punch is fixed on support, support Being contained on base and can slidably reciprocate along base, it is peripheral that die case is contained in punch.Cone mandrel outer surface tapering with Inside support, tapering is consistent, can be in close contact therewith, and during bulging, mandrel moves down, thus 12 supports are strutted edge Horizontal direction moves, and completes Bulging Process.

Support is divided into two parts, and vertical direction is that the annulus cutting that conical outer surface is cylindrical forms by an inner surface, Vertical direction sections inner side is tapered cylinder face, and tapering, diameter are all identical with mandrel, and it fits tightly with mandrel, outward Inside face of cylinder diameter and punch identical, and vertically have two screw holes in vertical portion, punch can be made to lead to Cross screw to be fixed on support.There is a rectangular recess bottom horizontal component, match with the rectangular guideway of base, swollen Can ensure during shape that support moves along a straight line.

Punch i.e. bulging die punch.Being cylindrical inside punch, diameter is equal with support vertical portion outside diameter, can Fitting tightly with support, difformity is made according to Special-shaped annular work piece inner surface in outside, the side surface of two vertical directions Angle be β, vertically have two screw holes on two countersunk screw hole, with support in punch centre position Position consistency, is fixed on punch on support by two screws, after fixing, with inner surface and a bridge joint inside punch Touch, lower surface and support level part contact.During bulging, each punch moves in the horizontal direction, forces blank to deform, swollen Shape terminates rear punch outer surface and fits tightly with annular workpieces inner surface, so that annular workpieces inner surface reaches to design chi Very little.

During bulging, mandrel moves down under pressure, due to outside slide block for taper, thus promote support along level Direction is moved, and punch moves in the horizontal direction with support, and then extrusion blank is pressed in die so that it is deformation, Completing Bulging Process in three times, bulging completes the 60% of total deformation for the first time, and along central axis, ring base is rotated 15 °, Bulging again, completes the 30% of total deformation, again rotates 15 °, complete the 10% of total deformation, after bulging terminates, Annular workpieces inner surface fits tightly with punch, and outer surface fits tightly with die, reaches design size, is divided by die Open, take out annular workpieces.Use this mould can shape thin-wall complicated Special-shaped annular workpiece, and can reach degree of precision.

When using this die forming Special-shaped annular workpiece, whole process is mainly by materials plastic forming, and being plastically deformed will not Destroy the continuity of metallic fiber as chip adds trade union, the density of material can also be improved simultaneously, thus increase part Surface abrasion resistance, the service life of raising part, and saved material;Final geometry due to annular workpieces Ensured by mould with size, the annular workpieces of shaping can be made to reach the highest precision, and be carried out continuously and repeatedly process Time can ensure that the uniformity of accessory size, precision;This mould has outer die, and die is made up of two parts, swollen Shape can be by separately taking out annular workpieces, therefore with existing annular workpieces expanding die phase by die very easily after terminating Ratio, this mould both can be with the better simply rectangle of shaped structure or taper annular workpieces, again can be with complicated different of shaped structure Shape annular workpieces.

Accompanying drawing explanation

Accompanying drawing 1 is the structural representation of the present invention;

Accompanying drawing 2 is the front view of the present invention;

Accompanying drawing 3 is the top view of the present invention;

Accompanying drawing 4 is the axonometric drawing of the present invention;

Accompanying drawing 5 is the assembling schematic diagram of the present invention;

Accompanying drawing 6 is the structural representation of mandrel;

Accompanying drawing 7 is the axonometric drawing of support;

Accompanying drawing 8 is the front view of Fig. 7;

Accompanying drawing 9 is the top view of Fig. 7;

Accompanying drawing 10 is the side view of Fig. 7;

Accompanying drawing 11 is the axonometric drawing of punch;

Accompanying drawing 12 is the axonometric drawing of die;

Accompanying drawing 13 is the axonometric drawing of base;

Accompanying drawing 14 is the schematic diagram of the final annular workpieces of embodiment 1;

Accompanying drawing 15 is the schematic diagram of the final annular workpieces of embodiment 2.

In figure: 1. mandrel;2. support;3. soket head cap screw;4. punch;5. blank;6. die;7. base;8. screw.

Detailed description of the invention

Embodiment 1

This example is the expanding die of a kind of forming titanium alloy thin-wall complicated Special-shaped annular workpiece.Annular workpieces in this example As shown in figure 11, annular workpieces wall thickness b=15, the outer diameter D=1000mm of annular workpieces, on annular workpieces for shape End length of straight flange is h1, lower end length of straight flange is h2, and h1=h2=130mm;The middle part of described annular workpieces is The heteromorphic regions of arc-shaped, outer radius R of this heteromorphic regions2=50mm;The two ends of described heteromorphic regions respectively with annular workpieces It is arc transition between upper end straight flange and lower end straight flange;Described transition arc R1=10mm.Annular workpieces material is TA15 titanium alloy.Using H13 hot die steel to make punch and die, remaining part uses 45 steel.

This example includes mandrel 1,12 supports 2, punch 4, die 6, bases 7.Described each support is positioned at base The upper surface of 7, the chute of each support lower surface is chimeric with each slide rail being distributed in base 7 upper surface respectively, makes each Frame can move radially along this slide rail at the upper surface of described base;Described 12 supports are in the upper surface group of this base Synthesize the assembly of circle.The smaller diameter end of cone mandrel 1 is positioned at the described assembly being made up of 12 supports, And fit with the inner surface of each support;Spacing is had between lower surface and the upper surface of base of described mandrel, this spacing It is highly the 1/3 of described support vertical height.12 punch 4 are fixed on each support 2 by soket head cap screw 3 respectively On.Two semicircular die lobes are to synthesizing the die 6 of circle and being sleeved on the outer surface of each punch 4;Described recessed The inner surface of mould and the outer surface of described punch are the forming face of workpiece;The shape in described component shaping face and shaping After the shape of workpiece consistent.

The internal diameter of the diameter=blank of the thickness+mandrel of the support of the thickness+present position of described punch.

During work, the blank of titanium alloy thin wall Complex Different Shape annular workpieces is placed between described punch 4 and die 6. By forcing press, mandrel 1 is pressed, make this mandrel move down under the effect of the pressure, and promote 12 supports 2 All radially move along susceptor surface and drive punch to move horizontally with support, and then extruding titanium alloy thin wall is multiple The blank of miscellaneous Special-shaped annular workpiece, by the shaping on punch

Block, by the groove of this blank press-in die, makes blank deform.The most described Bulging Process: the most swollen During core, axle 1 moves down 384mm, completes the 60% of total deformation;For the second time during bulging core, by blank edge Mandrel line rotation β/3, mandrel 1 moves down 192mm, completes the 30% of total deformation;For the third time during bulging core, Again by blank rotation β/3, mandrel 1 moves down 96mm, completes the 10% of total deformation.Blank is along central shaft When line rotates, the rotation direction of twice is consistent.After bulging terminates, annular workpieces inner surface fits tightly with punch 4, Outer surface fits tightly with die 6, reaches design size, by die 6 separately, takes out annular workpieces, obtains titanium and closes The thin-wall complicated Special-shaped annular workpiece of gold.

Angle between described mandrel surface and this mandrel center line is 5~10 °.In the present embodiment, at the bottom of described mandrel The a diameter of 580mm in portion, top diameter is 862mm, and during bulging, mandrel 1 moves down, thus by 12 supports 2 Strut and move along level side, complete Bulging Process.The formula (1) moving horizontally distance S calculating support 2 is:

S=htan α (1)

H is the distance that mandrel 1 vertically moves, and α is the angle of mandrel surface and mandrel center line.

Described support 2 is made up of vertical plate and one block of level board of one piece of arc, and this vertical plate is positioned on level board The one end on surface.One surface of described vertical plate is the inclined-plane coordinated with mandrel outer surface, when 12 holder combination become After circular assembly, the inclined-plane of described vertical plate is the inner surface of this assembly, joins with the outer surface of described mandrel Close.Two surfaces of the most described vertical plate are curved surface, and the curvature of this curved surface is identical with the curvature of mandrel.Described Connecting hole is had on vertical plate.

Described vertical plate dual-side is the hypotenuse that angle is identical with the dual-side of level board, and making described support is sector;Should Fan-shaped angle beta is determined by formula (2), in the present embodiment, and these sector angle beta=24 °.

&beta; < 2 arcsin [ R - S R sin ( 180 n ) ] - - - ( 2 )

R is punch outer surface minimum profile curvature radius, and S is the most total displacement of punch, and n is a point lobe number, and β is punch Outer surface camber line angle.

The chute of this level board length direction through, this chute and the end is had at the center of this level board lower surface length direction The slide rail of seat upper surface coordinates.

Described punch 4 is the bulk of arc, and the curvature of the inner surface of this punch is identical with the curvature of rack outer surface, should The shape of punch outer surface need to be consistent with annular workpieces forming requirements.In the present embodiment, in the middle part of the annular workpieces after shaping There is the arc of radially protruding, define the heteromorphic regions of this annular workpieces, therefore have the shaping block of protrusion at the middle part of this punch, The shape of this shaping block determines according to the forming requirements of annular workpieces.

It is cylindrical inside the punch 4 of the present embodiment, diameter 780mm, outer shape, size and table in annular workpieces Face is consistent, total height 520mm of punch 4, the height 217.5mm of upper and lower two cylindrical surface, a diameter of 970mm, The a diameter of 50mm of heteromorphic regions two knuckle, a diameter of 70mm of heteromorphic regions semicircle.In punch 4 centre position along perpendicular Nogata is to there being two M16 countersunk screw hole, and the distance away from upper and lower end face is respectively 130mm.Punch 4 is by interior six Angle screw 3 is fixed on support 2, and inner surface contacts with support 2 vertical portion, lower surface and support 2 horizontal component Contact.

Die 6 is circular, the die lobe of two semicircular ring combine.After the internal diameter of described die 6 and shaping The external diameter of workpiece identical.The surface that said two semicircular ring combines is step-like, defines for two semicircular ring The most chimeric seam;Described seam has fixing screw hole.

In the present embodiment, die inner shape, size are all consistent with annular workpieces outer surface, and total height is 520mm, Two cylindrical surface height is 217.5mm up and down, a diameter of 1000mm, two knuckle diameters of heteromorphic regions R1=R2=20mm, a diameter of 100mm of heteromorphic regions semicircle, be cylindrical outside die, diameter 1200mm.Die 6 Two parts be fixed together by four M20 screws.

Described base 7 is disc, has through core axle hole at the center of this disk, the diameter of this core axle hole and mandrel The diameter of larger diameter end is identical.Being evenly distributed in the upper surface 12 cross sections at described base 7 is the slide rail of rectangle, this guide rail Chute with each support lower surface coordinates respectively, thus is assemblied on base by each support, and makes each when bulging Frame 2 all can move along described slide rail.

In the present embodiment, a diameter of 900mm of described core axle hole, base 7 upper surface has a rectangle to lead every 30 ° Rail, height is 25mm, and width is 70mm.

Embodiment 2

This example is the expanding die of a kind of forming titanium alloy thin-wall complicated Special-shaped annular workpiece.Annular workpieces in this example Shape as shown in figure 12, annular workpieces wall thickness b=15, the small end outer diameter D of annular workpieces1=1000mm, annular work Part hold greatly outer diameter D2=1100mm, annular workpieces height h=350mm.Annular workpieces material is TA15 titanium alloy. Using H13 hot die steel to make punch and die, remaining part uses 45 steel.

This example includes mandrel 1,12 supports 2, punch 4, die 6, bases 7.Described each support is positioned at base The upper surface of 7, the chute of each support lower surface is chimeric with each slide rail being distributed in base 7 upper surface respectively, makes each Frame can move radially along this slide rail at the upper surface of described base;Described 12 supports are in the upper surface group of this base Synthesize the assembly of circle.The smaller diameter end of cone mandrel 1 is positioned at the described assembly being made up of 12 supports, And fit with the inner surface of each support;Spacing is had between lower surface and the upper surface of base of described mandrel, this spacing It is highly the 1/3 of described support vertical height.12 punch 4 are fixed on each support 2 by soket head cap screw 3 respectively On.Two semicircular die lobes are to synthesizing the die 6 of circle and being sleeved on the outer surface of each punch 4;Described recessed The inner surface of mould and the outer surface of described punch are the forming face of workpiece;The shape in described component shaping face and shaping After the shape of workpiece consistent.

The internal diameter of the diameter=blank of the thickness+mandrel of the support of the thickness+present position of described punch.

During work, the blank of titanium alloy thin wall Complex Different Shape annular workpieces is placed between described punch 4 and die 6. By forcing press, mandrel 1 is pressed, make this mandrel move down under the effect of the pressure, and promote 12 supports 2 All radially move along susceptor surface and drive punch to move horizontally with support, and then extruding titanium alloy thin wall is multiple The blank of miscellaneous Special-shaped annular workpiece, is pressed into this blank in the groove of die by the block that shapes on punch, makes blank become Shape.The most described Bulging Process: for the first time during bulging core, axle 1 moves down 384mm, completes total deformation 60%;For the second time during bulging core, by blank along central axis rotation β/3, mandrel 1 moves down 192mm, complete Become the 30% of total deformation;For the third time during bulging core, again by blank rotation β/3, mandrel 1 moves down 96mm, Complete the 10% of total deformation.After bulging terminates, annular workpieces inner surface fits tightly with punch 4, and outer surface is with recessed Mould 6 fits tightly, and reaches design size, by die 6 separately, takes out annular workpieces, obtains titanium alloy thin wall complicated Special-shaped annular workpiece.

Angle between described mandrel surface and this mandrel center line is 5~10 °.In the present embodiment, at the bottom of described mandrel The a diameter of 580mm in portion, top diameter is 862mm, and during bulging, mandrel 1 moves down, thus by 12 supports 2 Strut and move along level side, complete Bulging Process.The formula (1) moving horizontally distance S calculating support 2 is:

S=htan α (1)

H is the distance that mandrel 1 vertically moves, and α is the angle between axle surface and this mandrel center line.

Described support 2 is made up of vertical plate and one block of level board of one piece of arc, and this vertical plate is positioned on level board The one end on surface.One surface of described vertical plate is the inclined-plane coordinated with mandrel outer surface, when 12 holder combination become After circular assembly, the inclined-plane of described vertical plate is the inner surface of this assembly, joins with the outer surface of described mandrel Close.Two surfaces of the most described vertical plate are curved surface, and the curvature of this curved surface is identical with the curvature of mandrel.Described Connecting hole is had on vertical plate.Described vertical plate dual-side is inclined-plane, and the cross section making this vertical plate is sector.Described water The dual-side of flat board is hypotenuse, and making this level board is sector;Have through at the center of this level board lower surface length direction The chute of this level board length direction, this chute coordinates with the slide rail of base upper surface.Described vertical plate cross section is fan-shaped The fan-shaped angle of angle and level board be β, β and determined by formula (2), in the present embodiment, this sector angle beta =24 °.

&beta; < 2 arcsin [ R - S R sin ( 180 n ) ] - - - ( 2 )

R is punch outer surface minimum profile curvature radius, and S is the most total displacement of punch, and n is a point lobe number, and β is punch Outer surface camber line angle.

Described punch 4 is the bulk of arc, and the curvature of the inner surface of this punch is identical with the curvature of rack outer surface, should The shape of punch outer surface need to be consistent with annular workpieces forming requirements.In the present embodiment, the annular workpieces after shaping is cone Shape, therefore the outer surface of this punch is taper.

It is cylindrical inside the punch 4 of the present embodiment, diameter 780mm, outer shape, size and table in annular workpieces Face is consistent, total height 400mm of punch 4, a diameter of 956mm in upper surface, a diameter of 1070mm in lower surface.? Vertically there are two M16 countersunk screw hole in punch 4 centre position, and the distance away from upper and lower end face is respectively 130mm.Punch 4 is fixed on support 2 by soket head cap screw 3, and inner surface contacts with support 2 vertical portion, Lower surface contacts with support 2 horizontal component.

Die 6 is circular, the die lobe of two semicircular ring combine.After the internal diameter of described die 6 and shaping The external diameter of workpiece identical.The surface that said two semicircular ring combines is step-like, defines for two semicircular ring The most chimeric seam;Described seam has fixing screw hole.

In the present embodiment, die inner shape, size are all consistent with annular workpieces outer surface, and height is 400mm, on End face diameter is 986mm, a diameter of 1100mm in lower surface, is cylindrical outside die, diameter 1200mm.Recessed Two parts of mould 6 are fixed together by four M20 screws.

Described base 7 is disc, has through core axle hole at the center of this disk, the diameter of this core axle hole and mandrel The diameter of larger diameter end is identical.Being evenly distributed in the upper surface 12 cross sections at described base 7 is the slide rail of rectangle, this guide rail Chute with each support lower surface coordinates respectively, thus is assemblied on base by each support, and makes each when bulging Frame 2 all can move along described slide rail.

In the present embodiment, a diameter of 900mm of described core axle hole, base 7 upper surface has a rectangle to lead every 30 ° Rail, height is 25mm, and width is 70mm.

Claims (4)

1. a titanium alloy thin wall Complex Different Shape annular workpieces expanding die, it is characterised in that include mandrel, n support, N punch, die and base;At n the slide rail that be evenly distributed in the upper surface of described base, the trend of each slide rail is for being somebody's turn to do The radial direction of base;The chute of described each support lower surface is chimeric with each slide rail being positioned at base upper surface respectively, described Each support is combined into circular assembly at the upper surface of this base;The smaller diameter end of cone mandrel is positioned at described Assembly in, and fit with the inner surface of each support;Between lower surface and the upper surface of base of described mandrel Spacing is the 1/3 of described support vertical height;N punch is separately fixed on each support;Two semicircular recessed Mold section is to synthesizing the die of circle and being sleeved on the outer surface of each punch;The inner surface of described die and described punch Outer surface be the forming face of workpiece;Thickness+the mandrel of the support of the thickness+present position of described punch straight The internal diameter of footpath=blank;
Described from the inner surface of the assembly of n holder combination be the inclined-plane coordinated with mandrel outer surface;Described support Vertical plate and one block of level board by one piece of arc form, and this vertical plate is positioned at one end of level board upper surface, The chute of this level board length direction through, this chute and the end is had at the center of described level board lower surface length direction The slide rail of seat upper surface coordinates;Two surfaces of described vertical plate are curved surface, the curvature of this curved surface and the song of mandrel Rate is identical, when after the assembly that n holder combination becomes circular, by a surface composition of each vertical plate with institute State the assembly inner surface that the outer surface of mandrel coordinates;The inner surface of described assembly is to coordinate with mandrel outer surface Inclined-plane;Described vertical plate there is connecting hole;
Described vertical plate dual-side is the hypotenuse that angle is identical with the dual-side of level board, and making described support is sector;This fan Shape angle beta is determined by formula (2)
&beta; < 2 a r c s i n &lsqb; R - S R s i n ( 180 n ) &rsqb; - - - ( 2 )
In formula (2), R is punch outer surface minimum profile curvature radius, and S is the most total displacement of punch, and n is a point lobe Number, β is punch outer surface camber line angle.
2. titanium alloy thin wall Complex Different Shape annular workpieces expanding die as claimed in claim 1, it is characterised in that described base Center have through core axle hole, the diameter of this core axle hole is identical with the diameter of mandrel larger diameter end.
3. titanium alloy thin wall Complex Different Shape annular workpieces expanding die as claimed in claim 1, it is characterised in that composition is described The surface that two die lobes of die combine is step-like, defines for mutually chimeric the stopping of two semicircular ring Mouthful.
4. titanium alloy thin wall Complex Different Shape annular workpieces expanding die as claimed in claim 1, it is characterised in that described punch For the bulk of arc, the curvature of the inner surface of this punch is identical with the curvature of rack outer surface, this punch outer surface Shape need to be consistent with annular workpieces forming requirements.
CN201510197511.1A 2015-04-23 2015-04-23 A kind of titanium alloy thin wall Complex Different Shape annular workpieces expanding die CN104801598B (en)

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CN107030214B (en) * 2017-03-09 2018-09-21 山东省调水工程技术研究中心有限公司 A kind of equipment making large-diameter steel pipe bell and spigot
CN108435936B (en) * 2018-03-23 2020-08-04 吴浩 Thermal bulging method for bearing steel conical ring rolled piece
CN109434397A (en) * 2018-12-11 2019-03-08 陕西宏远航空锻造有限责任公司 A kind of preparation method of superalloy annular forging expanding die
CN110743979B (en) * 2019-11-26 2020-10-16 中国航发沈阳黎明航空发动机有限责任公司 Thermal bulging die for arc-shaped concave surface of titanium alloy thin-wall cylindrical part and working method

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