CN109351798A - A kind of integral extrusion forming method of light alloy housing complexity inner ring muscle - Google Patents
A kind of integral extrusion forming method of light alloy housing complexity inner ring muscle Download PDFInfo
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- CN109351798A CN109351798A CN201811128183.XA CN201811128183A CN109351798A CN 109351798 A CN109351798 A CN 109351798A CN 201811128183 A CN201811128183 A CN 201811128183A CN 109351798 A CN109351798 A CN 109351798A
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- inner ring
- ring muscle
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- inner support
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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
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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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
- B21C23/02—Making uncoated products
- B21C23/18—Making uncoated products by 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
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
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Abstract
A kind of integral extrusion forming method of light alloy housing complexity inner ring muscle disclosed by the invention, this method is related to a kind of integral extrusion forming mold of light alloy housing complexity inner ring muscle, the mold includes lower flexible obturator inner support, lower flexible obturator inner support is made into sand mold using flexible material according to the shape of inner ring muscle lower part；First light-alloy cylindrical member and the mold are heated and kept the temperature, light-alloy cylindrical member is placed into mold again, into the extrusion molding inner ring muscle stage, after the completion, press machine driven mold is detached from inner ring muscle, light-alloy cylindrical member break away from moulds, finally by control temperature, make lower flexible obturator inner support discretization.Stock utilization is greatly improved in the present invention; bring difficulties when overcoming use that valve inner supporting structure material is divided to carry out precision plastic forming; solve the problems, such as Caton when depanning; to play the role of protecting the mold, forming while inner ring muscle when realizing large complicated light alloy housing component entirety Plastic Forming.
Description
Technical field
The present invention relates to metal material plastic processing and forming technique field, in particular to a kind of large complicated light-alloy
The extrusion forming method of shell inner ring muscle.
Background technique
It is more more and more intense to the integration of large complicated light alloy housing component demand as aeronautical and space technology develops.
But then there is certain difficult point in the development of crucial complex casing component, show themselves in that development cost is high, the period is long, forming dimension essence
Spend it is low, rely primarily on machining guarantee precision；Large complicated light alloy housing component is easy to produce scarce in forming process
It falls into, performance inconsistency is big, unstable quality, low so as to cause its reliability and qualification rate.It is crucial in some advanced weaponry equipments
The complex casing component Accurate Shaping technology country is not yet broken through, and many key complex casing components must not in new-type weapon and equipment
It does not depend on import or is broken down into several components.As it can be seen that development and national defence that forming technique equips China's advanced weaponry
Industrial expansion has vital effect.Among these to use metal forming method components performance produced most
Excellent, the production that metal forming technology is applied to military product has been trend of the times.And it is large complicated with inner ring muscle
The production of light alloy housing component is even more that national defence military products develop an essential ring.
Particularly difficult, the traditional manufacturing process of the inner ring muscle monolithic molding of large complicated light alloy housing component is such as segmented
Forming welds again, cast also or the product that produces of mode of machining it is different degrees of there are weld crack, cast gas
The defects of bubble, shrinkage cavity, processing cost be high, waste of resource and deficiency not only degraded performance but also are not able to satisfy the military service of product and want
It asks.Improved method --- large complicated light-alloy is realized using the thermal extrusion moulding method of valve inner supporting structure is divided
The precision plastic forming of the inner ring muscle of housing member, as shown in Figure 1.Inner ring muscle is in first step backward extrusion such as Fig. 4 institute
Show that the secondary extrusion carried out on the basis of light-alloy cylindrical member is configured to have the large complicated light conjunction of inner ring muscle as shown in Figure 5
Golden housing member.
Although the utilization rate of material can be improved to a certain extent, but there are some processing difficulties and disadvantages.If
Divide valve inner support mould structure using intermeshing formula, the architectural characteristic of segmental mandrel can be such that valve and valve is formed after the splitting
Certain gap.In hot extrusion, part metals can be flow in the gap of segmental mandrel, formed overlap, caused some materials
Caton problem when loss and depanning.Meanwhile dividing the processing of valve inner supporting structure mold and matching requirements higher, it is difficult to essence
Really existing, as shown in Fig. 2-2a.
Such part forming difficult point is first is that be that the lower support of inner ring muscle needs inner support realizing diametric put
Also to be easy to the placement and taking-up of the mold while big and diminution；Second is that due to inner ring muscle need on certain position at
Shape, this just needs the upper support for guaranteeing inner ring muscle also to realize punch-pin to light while remaining stationary on certain position
The Plastic Forming of alloy cylindrical member；Third is that the inner support material takes out the mould on the basis of guaranteeing to realize the forming of inner ring muscle
Inner ring muscle will not be damaged when tool.
Summary of the invention
For three above problem, in conjunction with existing processing technology, the purpose of the present invention is to provide a kind of light alloy housings
The integral extrusion forming method of complicated inner ring muscle realizes the precision plastic forming of large complicated light alloy housing component inner ring muscle,
Stock utilization is greatly improved in the mold, bring when overcoming use that valve inner supporting structure material is divided to carry out precision plastic forming
Difficulties solve the problems, such as Caton when depanning, to play the role of protecting the mold, realize large complicated light-alloy shell
It is shaped while inner ring muscle when body component entirety Plastic Forming.
To achieve the goals above, technical scheme is as follows:
A kind of integral extrusion forming method of light alloy housing complexity inner ring muscle, this method are related to a kind of light alloy housing
The integral extrusion forming mold of complicated inner ring muscle, which includes the upper mold component connecting with the superstructure of press machine, interior
Support construction component and the lower die assembly being connect with press machine substructure；The upper mold component includes and press machine
The cope plate of upper table connection, upper die plate and downlink squeeze the punch-pin of light-alloy cylindrical member, the lower set of molds
Part include mandril, accommodate light-alloy cylindrical member cavity plate and knockout plate, the inner supporting structure component include disk spring,
Top inner support and lower flexible obturator inner support, this method specifically:
(1) prepare before forming: light-alloy cylindrical member and the mold are heated to forming temperature and held for some time, and
It is installed on press machine, in addition, uniformly by punch-pin, cavity plate, top inner support and lower flexible obturator inner support
Base graphitic lubricant is applied oil, light-alloy cylindrical member is placed into cavity plate；
(2) forming process: being to be in place the mold first, and lower flexible obturator inner support is placed into light conjunction
In golden cylindrical member, press machine drives upper mold component to move downward, and with the pushing of press machine, top inner support reaches specified
Position, into the extrusion molding inner ring muscle stage；Punch-pin and operation top inner support in place generate relative motion, downlink it is same
When upper die plate start with disk spring generate contact；
(3) after the completion of extrusion molding: the stopping of press machine upper table moves downward, and press machine upper table is back up
Movement drives punch-pin to rise and punch-pin and inner ring muscle is detached from, and continues rising punch-pin and will drive top inner support to transport upwards
It is dynamic, need to push laterally into knockout plate dnockout position at this time to guarantee that light-alloy cylindrical member is not transported together with top inner support
It is dynamic.Workbench continues up, and is detached from light-alloy cylindrical member, and mandril ejects the component of forming, later, passes through control
Reasonable temperature is made, the deformation of lower flexible obturator inner support and discretization is made, to complete to squeeze, to obtain institute convenient for taking out
The inner ring muscle of the large complicated light alloy housing component needed.
Further, the inner supporting structure component further includes disc spring support rod, inclined wedge and mandrel；On the inclined wedge
Portion is fastenedly connected together with disc spring support rod, and inclined wedge lower part is fastenedly connected together with mandrel；The top inner support is under
Portion's flexibility obturator inner support formed an enclosure space, lower flexible obturator inner support according to inner ring muscle lower part shape,
The desired sand mold of inner ring muscle is made into using flexible material, lower flexible obturator inner support is placed in inner ring muscle lower position, on
Portion's inner support forms the shape on inner ring muscle top, and top inner support is placed in inner ring muscle upper position.
Further, the cope plate is assemblied in press machine upper table with fastening bolt；The cope plate, upper mold
Backing plate and punch-pin are assembled together by hexagon socket cap head screw.
Further, the lower die assembly further includes the lower template connecting with the lower table of press machine and jacking block；Institute
The lower template stated is assemblied in press machine lower table with fastening bolt；The lower template and cavity plate passes through interior hexagonal cylindrical head
Screw is secured together；The jacking block is connected together with mandril by screw threads for fastening mode, and is had in cavity plate and lower template
Corresponding recesses play the role of positioning to jacking block；Knockout plate is T shape bond structure, there is corresponding cooperation T-slot structure on cavity plate.
The beneficial effects of the present invention are:
The flexible obturator used has certain elevated temperature strength.Flexible obturator has certain high temperature using casting
The heat-resisting molding sand of intensity can adapt to certain deformation and breathing, has after forming easy discretization, is easy to from ring muscle
The advantages such as inner cavity taking-up.Top inner support and lower flexible structure inner support together constitute the enclosure space of forming inner ring muscle.
In forming process, there is flexible obturator enough elevated temperature strengths to bear the pressure from top inner support and mandrel,
And light-alloy cylindrical member is changed by control technological parameter (forming angle, the intermediate zone fillet of muscle portion position) and is squeezed in inner ring muscle
Wall portion metal stress condition during compressive strain, preferably control metal stresses state, equivalent strain amount, plastic deformation and
Structural homogenity etc. ensure that the olderly flowage of wall portion metal and is changed into inner ring muscle, inner ring muscle formed thereby and housing wall portion
The streamline of metal is continuous whole.
1. proposing inner supporting structure a kind of new and convenient for taking out.Such as 10 in Fig. 3, this is a kind of flexible obturator
Inner support.This kind of material can easily be processed into obturator complicated shape corresponding to various inner ring muscle.With segmental mandrel knot
Structure inner support is compared, and this flexibility obturator inner support has saved very big cost.It is applicable not only in provided in the present invention
Ring muscle structure is also applied for the monolithic molding of muscle structure in some criss-cross complexity.After the completion of extruding, by reasonably
Temperature is controlled, so that the flexibility obturator deforms and keeps its discrete in order to take out.
2. simplifying mold design.For dividing valve inner supporting structure, design calculates sufficiently complex, assembly precision height, and assembly is difficult
Degree is big, and angle and gap between each point of valve valve body are difficult to control accurately.In extrusion process, the movement of each segmental mandrel block
With being difficult to reach design requirement.In the process of running, part metals are flow in the gap of segmental mandrel, are generated overlap and are caused mould
The Caton of tool causes forming to fail.In the present invention, flexible obturator is an entirety, and there is no generate to fly during embarking on journey
The problem on side.In addition, large complicated light alloy housing structure not only may be implemented as inner supporting structure using flexible obturator
The monolithic molding of part inner ring muscle, and the cumbersome process of individually placed segmental mandrel inner supporting structure component is avoided, simplify mould
Tool design, it is more convenient to operate.
3. reducing the processing cost of mold.Compared with segmental mandrel inner supporting structure, use flexible obturator as inner support
Structure, one are that of avoiding in extrusion process, are formed overlap in the gap of metal flow to segmental mandrel and are caused mold
Caton, the problem of re-working mold；The second is for such large complicated light alloy housing component with inner ring muscle, point
Petal inner support requirement on machining accuracy is high, processing cost is expensive, and yield rate is lower.And use flexible obturator as inner support
Structure, upper die component and inner support component cooperate linking to together using tapered slope clever structure, make the mould structure can
To regard upper mold portion and lower mold portion two large divisions as, the processing is simple for the mold, has saved production cost.
Below in conjunction with drawings and the specific embodiments, the present invention will be further described.
Detailed description of the invention
Fig. 1 is to utilize segmental mandrel inner support, the section view of light-alloy cylindrical member mold work state in extrusion molding
Figure；
Fig. 2 is the cross-sectional view of segmental mandrel inner support；
Fig. 2 a is a point bottom view for valve inner support；
Fig. 3 is in embodiment provided by the present invention using flexible material as inner supporting structure, and light-alloy cylindrical member exists
Mold work status diagram when extruding；
Fig. 4 is the schematic diagram of light-alloy cylindrical member in embodiment provided by the present invention；
It is with the big of inner ring muscle that Fig. 5, which is that light-alloy cylindrical member passes through extrusion molding in embodiment provided by the present invention,
Type complexity light-alloy component schematic diagram.
Label declaration
1- cope plate；2- upper die plate；3- hexagon socket cap head screw；4- punch-pin；5-disk springs；The support of 6- disc spring
Bar；7- inclined wedge；The top 8- inner support；9- mandrel；10- lower flexible obturator inner support；11- cavity plate；12- jacking block；13- envelope
Close space；14- lower template；15- mandril；16- knockout plate；17- light-alloy cylindrical member.
Specific embodiment
A kind of integral extrusion forming method for light alloy housing complexity inner ring muscle that the present invention discloses, this method are related to one
The integral extrusion forming mold of kind light alloy housing complexity inner ring muscle, as shown in Figs 1-4, including the superstructure with press machine
The upper mold component of connection, inner supporting structure component and the lower die assembly being connect with press machine substructure, lower set of molds
Part includes the cavity plate 11 for accommodating light-alloy cylindrical member 17, and upper mold component includes the punch-pin that downlink squeezes light-alloy cylindrical member 17
4。
The upper mold component further includes the cope plate 1 and upper die plate 2 connecting with the upper table of press machine.Institute
The cope plate 1 stated is assemblied in press machine upper table with fastening bolt.Cope plate 1, upper die plate 2 and the punch-pin 4 passes through
Hexagon socket cap head screw 3 is assembled together.
The inner supporting structure component includes disk spring 5, disc spring support rod 6, inclined wedge 7, top inner support 8, mandrel
9 and lower flexible obturator inner support 10.The inclined wedge 7 and disc spring support rod 6 is connected to one by screw threads for fastening mode
It rises, inclined wedge 7 is connected together with mandrel 9 also by screw threads for fastening mode, and lower flexible obturator inner support 10 is according to inner ring muscle
The shape of lower part is made into the desired sand mold of inner ring muscle using flexible material, and lower flexible obturator inner support 10 is placed directly within
Inner ring muscle lower position, top inner support 8 form the shape on inner ring muscle top, and top inner support 8 is placed in inner ring muscle upper bit
It sets, top inner support 8 and lower flexible obturator inner support 10 form an enclosure space 13, to be soft when real now forming
Property obturator provide three-dimensional compressive stress, to guarantee that the forming of inner ring muscle is complete.The lower die assembly further includes and presses
Lower template 14, knockout plate 17, jacking block 12 and the mandril 15 of the lower table connection of power machine.The lower template 14 fastening spiral shell
Bolt is assemblied in press machine lower table.The lower template 14 and cavity plate 11 is fixed to one by hexagon socket cap head screw 3
It rises.The jacking block 12 is connected together with mandril 15 by screw threads for fastening mode, and has phase in cavity plate 11 and lower template 14
Groove is answered, is played the role of positioning to jacking block 12.Knockout plate 17 is T shape bond structure (not shown go out), has on cavity plate 11 and matches accordingly
Close T-slot structure (not shown go out).
Inner ring muscle is two carried out on the basis of light-alloy cylindrical member 17 as shown in Figure 4 of first step backward extrusion
Secondary extrusion molding is the large complicated light alloy housing component for having inner ring muscle as shown in Figure 5.So the inner ring muscle of above-mentioned component
The sequence of integral extrusion forming method are as follows:
(1) prepare before forming: light-alloy cylindrical member 17 as shown in Figure 4 and above-mentioned mold are heated to forming temperature simultaneously
Held for some time, and be installed on press machine according to above-mentioned assembly relation.In addition, by punch-pin 4, cavity plate 11, inner support table
Face equably applies oil base graphitic lubricant, and light-alloy cylindrical member 17 is placed into cavity plate 11.
(2) forming process: being to be in place the mold first, and lower flexible structure inner support 10 is placed into light conjunction
In golden cylindrical member 17.Press machine drives the downward movements such as cope plate 1, upper die plate 2 and the punch-pin 4 of upper mold component.With
The pushing of press machine, top inner support 8 reach designated position, into the extrusion molding stage.
Punch-pin 4 and operation 8 structure of top inner support in place generate relative motion, and upper die plate 2 starts while downlink
It is contacted with the generation of disk spring 5, disk spring 5 is able to bear certain load deformation, generates to top inner support 8 downward
The upward power that top inner support 8 can be generated with light-alloy cylindrical member 17 of power cancel out each other.Meanwhile disk spring 5 can be with
Play the role of sealing, reach seal request, can be realized the effect of the high balancing force of low row journey, guarantees forming to the greatest extent
Inner ring muscle reach required precision.
(3) after the completion of extrusion molding: the stopping of press machine upper table moves downward, and press machine upper table is back up
It moves, drives punch-pin 4 to rise and be detached from the inner ring muscle of punch-pin 4 and the component, continuing rising punch-pin 4 will drive in top
Support 8 moves upwards.Need to push laterally into knockout plate 17 dnockout position at this time to guarantee light-alloy cylindrical member 17 not with upper
Portion's inner support 8 moves together.Workbench continues up, and is detached from light-alloy cylindrical member 17, and mandril 15 should by forming
Component ejection.Later, by the reasonable temperature of control, make flexible obturator inner support deformation and discretization, convenient for taking out, from
And complete to squeeze, obtain the inner ring muscle of required large complicated light alloy housing component.
Compared with prior art, the present invention having following technical effect that
1, the flexible obturator used has certain elevated temperature strength.Top inner support 8 and lower flexible structure inner support 10
Together constitute the enclosure space 13 of forming inner ring muscle.In forming process, there is flexible obturator enough elevated temperature strengths to hold
(forming angle, the intermediate zone of muscle portion position are played by the pressure from top inner support 8 and mandrel 9, and by control technological parameter
Fillet) change wall portion metal stress condition of the light-alloy cylindrical member 17 in inner ring muscle extrusion process used for forming, preferably control
Metal stresses state, equivalent strain amount, plastic deformation and structural homogenity processed etc., ensure that the olderly flowage of wall portion metal simultaneously
It is changed into inner ring muscle, inner ring muscle formed thereby and the streamline of housing wall portion metal are continuous whole.
2, inner supporting structure a kind of new and convenient for taking out is proposed.Such as 10 in Fig. 3, this is a kind of flexible obturator
Inner support.This kind of material can easily be processed into obturator complicated shape corresponding to various inner ring muscle.With segmental mandrel knot
Structure inner support is compared, and this flexibility obturator inner support has saved very big cost.It is applicable not only in provided in the present invention
Ring muscle structure is also applied for the monolithic molding of muscle structure in some criss-cross complexity.After the completion of extruding, by reasonably
Temperature is controlled, so that the flexibility obturator deforms and keeps its discrete in order to take out.
3, simplify mold design.For dividing valve inner supporting structure, design calculates sufficiently complex, assembly precision height, and assembly is difficult
Degree is big, and angle and gap between each point of valve valve body are difficult to control accurately.In extrusion process, the movement of each segmental mandrel block
With being difficult to reach design requirement.In the process of running, part metals are flow in the gap of segmental mandrel, are generated overlap and are caused mould
The Caton of tool causes forming to fail.In the present invention, flexible obturator is an entirety, and there is no generate to fly during embarking on journey
The problem on side.In addition, large complicated light alloy housing structure not only may be implemented as inner supporting structure using flexible obturator
The monolithic molding of part inner ring muscle, and the cumbersome process of individually placed segmental mandrel inner supporting structure component is avoided, simplify mould
Tool design, it is more convenient to operate.
4, the processing cost of mold is reduced.Compared with segmental mandrel inner supporting structure, use flexible obturator as inner support
Structure, one are that of avoiding in extrusion process, are formed overlap in the gap of metal flow to segmental mandrel and are caused mold
Caton, the problem of re-working mold；The second is for such large complicated light alloy housing component with inner ring muscle, point
Petal inner support requirement on machining accuracy is high, processing cost is expensive, and yield rate is lower.And use flexible obturator as inner support
Structure, upper mold component and inner supporting structure component cooperate linking to together using tapered slope clever structure, make the mold
Structure can regard upper mold portion and lower mold portion two large divisions as, and the processing is simple for the mold, save production cost.
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 (4)
1. a kind of integral extrusion forming method of light alloy housing complexity inner ring muscle, it is complicated that this method is related to a kind of light alloy housing
The integral extrusion forming mold of inner ring muscle, the mold include the upper mold component connecting with the superstructure of press machine, inner support
Construction package and the lower die assembly being connect with press machine substructure；The upper mold component includes the upper work with press machine
The cope plate, upper die plate and downlink for making platform connection squeeze the punch-pin of light-alloy cylindrical member, and the lower die assembly includes top
Bar, the cavity plate and knockout plate for accommodating light-alloy cylindrical member, the inner supporting structure component includes disk spring, top inner support
With lower flexible obturator inner support, this method specifically:
(1) prepare before forming: light-alloy cylindrical member and the mold being heated to forming temperature and held for some time, and are installed to
On press machine, in addition, uniformly applying oil punch-pin, cavity plate, top inner support and lower flexible obturator inner support
Light-alloy cylindrical member is placed into cavity plate by base graphitic lubricant；
(2) forming process: being to be in place the mold first, and lower flexible obturator inner support is placed into light-alloy tubular
In part, press machine drives upper mold component to move downward, and with the pushing of press machine, top inner support reaches designated position, into
Enter the extrusion molding inner ring muscle stage；Punch-pin and operation top inner support in place generate relative motion, downlink while upper die-cushion
Plate, which starts to generate with disk spring, to be contacted；
(3) after the completion of extrusion molding: the stopping of press machine upper table moves downward, and press machine upper table moves back up,
It drives punch-pin to rise and punch-pin and inner ring muscle is detached from, continue rising punch-pin and will drive top inner support to move upwards, at this time
Need to push laterally into knockout plate dnockout position to guarantee that light-alloy cylindrical member does not move together with top inner support；Workbench
It continues up, is detached from light-alloy cylindrical member, mandril ejects the component of forming, later, by controlling reasonable temperature
Degree makes the deformation of lower flexible obturator inner support and discretization, and convenient for taking out, to complete to squeeze, it is multiple to obtain required large size
The inner ring muscle of miscellaneous light alloy housing component.
2. a kind of integral extrusion forming method of light alloy housing complexity inner ring muscle as described in claim 1, it is characterised in that:
The inner supporting structure component includes that disk spring, disc spring support rod, inclined wedge, top inner support, mandrel and lower flexible are filled out
Fill internal support；The inclined wedge top is fastenedly connected together with disc spring support rod, and inclined wedge lower part and mandrel are fastenedly connected
Together；The top inner support and lower flexible obturator inner support form an enclosure space, branch in lower flexible obturator
Support is made into the desired sand mold of inner ring muscle, lower flexible obturator inner support using flexible material according to the shape of inner ring muscle lower part
It is placed in inner ring muscle lower position, top inner support forms the shape on inner ring muscle top, and top inner support is placed in inner ring muscle upper bit
It sets.
3. a kind of integral extrusion forming method of light alloy housing complexity inner ring muscle as described in claim 1, it is characterised in that:
The cope plate is assemblied in press machine upper table with fastening bolt；Cope plate, upper die plate and the punch-pin passes through interior
Hexagonal cylindrical head screw is assembled together.
4. a kind of integral extrusion forming method of light alloy housing complexity inner ring muscle as described in claim 1, it is characterised in that:
The lower die assembly further includes the lower template connecting with the lower table of press machine and jacking block；The lower template fastening
Bolt is assemblied in press machine lower table；The lower template and cavity plate is secured together by hexagon socket cap head screw；Institute
The jacking block stated is connected together with mandril by screw threads for fastening mode, and has corresponding recesses in cavity plate and lower template, is risen to jacking block
Positioning action；Knockout plate is T shape bond structure, there is corresponding cooperation T-slot structure on cavity plate.
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| CN201811128183.XA CN109351798B (en) | 2018-09-11 | 2018-09-11 | Integral extrusion forming method for complex inner ring rib of light alloy shell |
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Cited By (1)
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| CN110614284A (en) * | 2019-09-24 | 2019-12-27 | 武汉理工大学 | Extrusion forming method of thin-wall grid rib conical ring piece |
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|---|---|---|---|---|
| CN110614284A (en) * | 2019-09-24 | 2019-12-27 | 武汉理工大学 | Extrusion forming method of thin-wall grid rib conical ring piece |
| CN110614284B (en) * | 2019-09-24 | 2020-10-16 | 武汉理工大学 | Extrusion forming method of thin-wall grid rib conical ring piece |
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| CN109351798B (en) | 2020-01-03 |
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