CN107442589B - A kind of large-scale band lug magnesium alloy component shaping dies - Google Patents

A kind of large-scale band lug magnesium alloy component shaping dies Download PDF

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Publication number
CN107442589B
CN107442589B CN201710858741.7A CN201710858741A CN107442589B CN 107442589 B CN107442589 B CN 107442589B CN 201710858741 A CN201710858741 A CN 201710858741A CN 107442589 B CN107442589 B CN 107442589B
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China
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plate
movements
sphere
cavity plate
elephants
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CN201710858741.7A
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CN107442589A (en
Inventor
于建民
赵熹
夏亚东
王强
程少博
刘泽
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North University of China
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North University of China
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00Extruding metal; Impact extrusion
    • B21C23/02Making uncoated products
    • B21C23/18Making uncoated products by impact extrusion
    • B21C23/183Making uncoated products by impact extrusion by forward extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00Extruding metal; Impact extrusion
    • B21C23/02Making uncoated products
    • B21C23/18Making uncoated products by impact extrusion
    • B21C23/186Making uncoated products by impact extrusion by backward extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00Extruding metal; Impact extrusion
    • B21C23/32Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00Profiling tools for metal extruding
    • B21C25/02Dies

Abstract

The invention discloses a kind of large-scale band lug magnesium alloy component shaping dies, it includes the ejection linkage of punch assemblies, lower die assembly and cavity plate component and entirety;Punch assemblies include the cope plate connecting with the sliding block of press machine, the fixed plate of fixed formed punch and the formed punch being connected with cope plate;Cavity plate component includes irregular non-axis symmetry cavity plate and the sphere of movements for the elephants pintongs cavity plate inside irregular non-axis symmetry cavity plate;Lower die assembly includes lower template, " ten " the word fixed plate being connected with lower template, the special-shaped fixed plate being connected with " ten " word fixed plate;Whole ejection linkage includes cylindrical mandril, " ten " the font mandril inside " ten " word fixed plate and the sphere of movements for the elephants jacking block matched with sphere of movements for the elephants pintongs cavity plate;, by reasonably distributing metal flow, reducing the rejection rate of magnesium alloy large-sized component and improving stock utilization, forming technology is simple for it, greatly improves production efficiency and improves the performance of extrusion.

Description

A kind of large-scale band lug magnesium alloy component shaping dies
Technical field
The present invention relates to metal material plastic processing and forming technique fields, and in particular to a kind of large-scale band lug magnesium alloy Component forming mold.
Background technique
Large-scale component is representative one of structure type in fields such as space flight and aviation, defence and military, communications and transportation. Often forming technology is complicated for it, it is difficult to and it is once-forming, production efficiency is both reduced, production cost is also increased.It is compound to get into row Big plastic deformation technology does not obtain mature development yet, so that the production of special-shaped large-scale component encounters bottleneck.And magnesium alloy Forming property is poor, in forming process, is easy to produce defect, these factors result in jointly compound squeezes big plastic deformation technology It develops slowly.But pass through the flowing of control metal, thus it is possible to vary these defects can be with by reasonably distributing metal flow It reduces magnesium alloy large-sized component by rejection rate and improves stock utilization.Metal is perfectly utilized in this compound extrusion forming method Flowing law keeps forming technology simple, can greatly improve production efficiency and improve the performance of extrusion.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of large-scale band lug magnesium alloy components Shaping dies, by reasonably distributing metal flow, reducing the rejection rate of magnesium alloy large-sized component and improving stock utilization, at Shape simple process greatly improves production efficiency and improves the performance of extrusion.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of large-scale band lug magnesium alloy component shaping dies, includes the punch assemblies and pressure being connected with press ram The ejection linkage of power machine substructure connected lower die assembly and cavity plate component and entirety;The punch assemblies packet Containing cope plate, upper mounted plate, formed punch;Cope plate is fixedly connected by fastener with the top shoe of press machine;Formed punch passes through upper solid Fixed board and fastener are fixed on cope plate;The cavity plate component includes irregular non-axis symmetry cavity plate and is in irregular Sphere of movements for the elephants pintongs cavity plate inside non-axis symmetry cavity plate;The lower die assembly includes lower template, is connected with lower template " ten " word fixed plate, the special-shaped fixed plate being connected with " ten " word fixed plate;Sphere of movements for the elephants pintongs cavity plate is by special-shaped fixed plate and not Regular non-axis symmetry cavity plate connection;Special-shaped fixed plate is fixedly connected by fastener with " ten " word fixed plate;" ten " word fixed plate It is fixedly connected by fastener with lower template;Lower template is by fastener and is assemblied on the lower table of press machine;Described Whole ejection linkage includes cylindrical mandril, " ten " font mandril and and sphere of movements for the elephants inside " ten " word fixed plate The sphere of movements for the elephants jacking block that pintongs cavity plate matches;The end of cylindrical mandril and the liftout tank of press machine connect;Cylindrical mandril Top passes through lower template and connect with the end of " ten " font mandril;The top of " ten " font mandril is connect with sphere of movements for the elephants jacking block.
Preferably, the formed punch is divided into whole forming punch and preform rushes first two;
Preferably, the irregular non-axis symmetry cavity plate is equipped with the type along the asymmetric similar ellipse of central axis Chamber;The type chamber of similar ellipse is equipped with pattern draft;
Preferably, the sphere of movements for the elephants pintongs cavity plate is to constitute sphere of movements for the elephants shape cavity plate by the small cavity plate of pintongs;The small cavity plate of pintongs Middle part formed " ten " font type chamber;" ten " font type chamber is equipped with pattern draft;The edge of " ten " font type chamber has circle Angle;
Preferably, the sphere of movements for the elephants jacking block is divided into thin sphere of movements for the elephants jacking block and thick two kinds of jacking block of sphere of movements for the elephants;
Preferably, the upper end of the irregular non-axis symmetry cavity plate is equipped with stop gauge;The stop gauge includes The striker plate that bottom is equipped with the cambered plate of rectangular through holes and is mounted in rectangular through holes.
After adopting the above scheme, the present invention has the beneficial effect that:A kind of large-scale band lug magnesium alloy component of the present invention Shaping dies, using irregular non-axis symmetry cavity plate, compound crowded smart structural design, good reliability, forming accuracy are high, are forming In the process, the preform stage reasonably controls the flowing of metal by preform formed punch, and the capacity distribution of metal is intact, so that Whole shaping stage metal can perfectly flow, and get a desired effect, and form extrusion;And forming side of the present invention Method can effectively reduce forming technology, greatly improve production efficiency, save the cost and improvement material structure performance.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art To obtain other drawings based on these drawings.
Fig. 1 is mold general assembly drawing of the invention;
Fig. 2 is blank mold work status diagram when to be extruded;
Fig. 3 is blank mold work status diagram in preform extrusion molding;
Fig. 4 is blank mold work status diagram when whole contoured squeeze shapes;
Fig. 5 is the main view of preform formed punch;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the top view of Fig. 5;
Fig. 8 is the main view of whole forming punch;
Fig. 9 is the left view of Fig. 8;
Figure 10 is the top view of Fig. 8;
Figure 11 is the structural schematic diagram of irregular non-axis symmetry cavity plate;
Figure 12 is the cross-sectional view in the direction A-A in Figure 11;
Figure 13 is the main view of sphere of movements for the elephants pintongs cavity plate;
Figure 14 is the cross-sectional view in the direction B-B in Figure 13;
Figure 15 is the main view of special-shaped fixed plate;
Figure 16 is the cross-sectional view in the direction C-C in Figure 15;
Figure 17 is the cross-sectional view in the direction D-D in Figure 15;
Figure 18 is the main view of cambered plate;
Figure 19 is the cross-sectional view in the direction E-E in Figure 18.
Description of symbols:
1, cope plate;2, fastener;3, upper mounted plate;4, whole forming punch;5, cambered plate;6, striker plate;7, irregular Non-axis symmetry cavity plate;8, special-shaped fixed plate;9, ten " word fixed plate;10, lower template;11, cylindrical mandril;12, " ten " font top Bar;13, thin sphere of movements for the elephants jacking block;14, sphere of movements for the elephants pintongs cavity plate;15, preform formed punch;16, magnesium alloy blank;17, thick sphere of movements for the elephants Jacking block;18, preform extrusion;19, final extrusion;The type lumen type chamber of 7-1, similar ellipse.
Specific embodiment
With reference to the accompanying drawing, the present invention is further illustrated.
Referring to shown in Fig. 1-19, present embodiment the technical solution adopted is that:It includes to be connected with press ram Punch assemblies, the lower die assembly that is connected with press machine substructure and cavity plate component and entirety ejection linkage; The punch assemblies include cope plate 1, upper mounted plate 3, formed punch;Cope plate 1 is solid by the top shoe of fastener 2 and press machine Fixed connection;Formed punch is fixed on cope plate 1 by upper mounted plate 3 and fastener 2;The cavity plate component includes irregular non-axis Symmetrical cavity plate 7 and the sphere of movements for the elephants pintongs cavity plate 14 inside irregular non-axis symmetry cavity plate;The lower die assembly packet " ten " the word fixed plate 9 being connected containing lower template 10, with lower template, the special-shaped fixed plate 8 being connected with " ten " word fixed plate;Sphere of movements for the elephants Pintongs cavity plate 14 passes through special-shaped fixed plate 8 and connect with irregular non-axis symmetry cavity plate 7;Special-shaped fixed plate 8 by fastener 2 with " ten " word fixed plate 9 is fixedly connected;" ten " word fixed plate 9 is fixedly connected by fastener 2 with lower template 10;Lower template 10 passes through It fastener 2 and is assemblied on the lower table of press machine;The described whole ejection linkage include cylindrical mandril 11, " ten " font mandril 12 inside " ten " word fixed plate and the sphere of movements for the elephants jacking block 13 matched with sphere of movements for the elephants pintongs cavity plate;Circle The end of cylindricality mandril 11 and the liftout tank of press machine connect;The top of cylindrical mandril 11 passes through lower template and " ten " font top The end of bar 12 connects;The top of " ten " font mandril 12 is connect with sphere of movements for the elephants jacking block 13.
Referring to shown in Fig. 1-10, the formed punch is divided into whole forming punch 4 and 15 two kinds of preform formed punch;
Referring to shown in Figure 11-12, the irregular non-axis symmetry cavity plate 7 is equipped with asymmetric similar ellipse along central axis Circular type chamber 7-1;The type chamber 7-1 of similar ellipse is equipped with pattern draft;
Referring to shown in Figure 13-14, the sphere of movements for the elephants pintongs cavity plate 14 is to constitute sphere of movements for the elephants shape cavity plate by the small cavity plate of pintongs; The middle part of the small cavity plate of pintongs forms " ten " font type chamber;" ten " font type chamber is equipped with pattern draft;The side of " ten " font type chamber It is rounded down at angle;
Referring to shown in Fig. 1-4, the sphere of movements for the elephants jacking block is divided into thin sphere of movements for the elephants jacking block 13 and thick 17 two kinds of jacking block of sphere of movements for the elephants;
Referring to shown in Fig. 1-4,18-19, the upper end of the irregular non-axis symmetry cavity plate 7 is equipped with stop gauge;It is described Stop gauge include that bottom is equipped with the cambered plate 5 of rectangular through holes and the striker plate 6 that is mounted in rectangular through holes.
The concrete operation step of present embodiment is:
1, bar material baiting;
2, homogenization heat treatment forms magnesium alloy blank 16;
3, magnesium alloy blank is heated to forming temperature and kept the temperature, and compound crowded shaping dies is integrally preheating to magnesium alloy It more than blank temperature and keeps the temperature;
4, the shaping dies after preheating insulation is mounted on press machine;To sphere of movements for the elephants pintongs cavity plate 14, irregular non-axis Symmetrical cavity plate 7, sphere of movements for the elephants jacking block 13 and the organic graphitic lubricant of 15 even application of preform formed punch;It will be by homogenization heat treatment Magnesium alloy blank 16 be put into irregular non-axis symmetry cavity plate 7 type it is intracavitary (referring to shown in Fig. 2);
5, press machine drives preform punch assemblies to move downward, the type chamber for forming magnesium alloy blank 16 in cavity plate component Internal shaping preform extrusion 18;Magnesium alloy blank 16 is just being extruded into shape axial direction under the action of preform 15 pressure of formed punch first Sphere of movements for the elephants cross bar and radial upset process, then shape the circumference (institute referring to Fig. 3 of irregular non-axis symmetry cavity plate Show);After preform, the thick sphere of movements for the elephants jacking block 17 of preform punch assemblies and ejection is laid down, then by whole forming terrace die component It is fixed by fastener and press ram, the type for putting the thin sphere of movements for the elephants jacking block 13 of preheating into cavity plate component is intracavitary, then presses Power machine sliding block drives whole forming terrace die component to move downward, the intracavitary preform extrusion 18 of Extruding die assembly type;Preform Extrusion 18 is just being extruded into shape remaining sphere of movements for the elephants cross bar part first and is being extruded into anti-under the action of whole 4 pressure of forming punch The both sides " ear " of a part of extrusion of shape, it is finally counter to be extruded into final 19 shape of extrusion of shape (referring to shown in Fig. 4);
6, the movement that press ram drives punch assemblies upward;Press machine liftout tank moves upwards, and makes whole ejection Linkage moves upwards, and so that the bottom of final extrusion 19 is risen to the outlet end of irregular non-axis symmetry cavity plate 7, then It takes out;Punch assemblies and cavity plate component are molded, the fastening bolt being connected with press ram and lower table is unscrewed, are unloaded Fall mold.
Referring to shown in Fig. 1-4, present embodiment devises preform and eventually forming two stages, combined die knot Structure and whole ejection linkage:By changing the thickness of sphere of movements for the elephants jacking block, " field " cross bar of interim contoured squeeze part Part keeps its forming complete, and streamline distribution is uniform, and formability is good, zero defect;It is squeezed by preform and whole shaping stage forming The circumference of casting die and the both sides " ear " of extrusion can be good at the flowing for controlling metal, make two " ears " by uniformly anti- Be extruded into certain height, do not generate wrinkle, height it is different the defects of;By whole ejection linkage, make to exchange thickness Sphere of movements for the elephants jacking block and feeding become simply to simplify whole operation;By reasonably designing irregular non-axis symmetry cavity plate The pattern draft and fillet of pattern draft and sphere of movements for the elephants pintongs cavity plate can reasonably distribute the flowing of metal, generate perfect Streamline, does not cause defect, and easy contoured squeeze part and pickup are easy;During extrusion forming, blank experienced three changes The shape stage:First is that blank carries out positive axial and radial composite deformation simultaneously when preform;Second is that when shaping the initial stage eventually, Blank carry out simultaneously radial, positive axial direction and rotary-inversion axis to composite deformation;Third is that blank carries out single when shaping ending phase eventually Backward extrusion deformation.Blank is after whole composite deformation, and the crystal grain of extrusion has obviously obtained mechanical refinement and performance obtains Significant raising is arrived.
After adopting the above scheme, the present invention has the beneficial effect that:A kind of large-scale band lug magnesium alloy component of the present invention Shaping dies, using irregular non-axis symmetry cavity plate, compound crowded smart structural design, good reliability, forming accuracy are high, are forming In the process, the preform stage reasonably controls the flowing of metal by preform formed punch, and the capacity distribution of metal is intact, so that Whole shaping stage metal can perfectly flow, and get a desired effect, and form extrusion;And forming side of the present invention Method can effectively reduce forming technology, greatly improve production efficiency, save the cost and improvement material structure performance.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention, It is intended to be within the scope of the claims of the invention.

Claims (5)

1. a kind of large-scale band lug magnesium alloy component shaping dies, it is characterised in that it includes the punch-pin being connected with press ram The ejection linkage of component, the lower die assembly being connected with press machine substructure and cavity plate component and entirety;Described Punch assemblies include cope plate, upper mounted plate, formed punch;Cope plate is fixedly connected by fastener with the top shoe of press machine;Institute The formed punch stated is divided into whole forming punch and preform rushes first two, eventually forming and the preform stage pass through respectively upper mounted plate and Fastener is fixed on cope plate;The cavity plate component is comprising irregular non-axis symmetry cavity plate and in irregular non-axis pair Claim the sphere of movements for the elephants pintongs cavity plate inside cavity plate;The lower die assembly is solid comprising lower template, " ten " word being connected with lower template Fixed board, the special-shaped fixed plate being connected with " ten " word fixed plate;Sphere of movements for the elephants pintongs cavity plate passes through special-shaped fixed plate and irregular non-axis Symmetrical cavity plate connection;Special-shaped fixed plate is fixedly connected by fastener with " ten " word fixed plate;" ten " word fixed plate passes through fastening Part is fixedly connected with lower template;Lower template is by fastener and is assemblied on the lower table of press machine;The whole top Out linkage include cylindrical mandril, " ten " the font mandril inside " ten " word fixed plate and with sphere of movements for the elephants pintongs cavity plate The sphere of movements for the elephants jacking block matched, the sphere of movements for the elephants jacking block are divided into thin sphere of movements for the elephants jacking block and thick two kinds of jacking block of sphere of movements for the elephants, end at Shape and preform stage, which respectively correspond, is divided into thin sphere of movements for the elephants jacking block and thick sphere of movements for the elephants jacking block using sphere of movements for the elephants jacking block;Cylindrical mandril End and press machine liftout tank connect;The top of cylindrical mandril passes through lower template and the end of " ten " font mandril connects It connects;The top of " ten " font mandril is connect with sphere of movements for the elephants jacking block.
2. a kind of large-scale band lug magnesium alloy component shaping dies according to claim 1, it is characterised in that it is described not Regular non-axis symmetry cavity plate is equipped with the type chamber along the asymmetric similar ellipse of central axis;The type chamber of similar ellipse is equipped with Pattern draft.
3. a kind of large-scale band lug magnesium alloy component shaping dies according to claim 2, it is characterised in that it is described not The upper end of regular non-axis symmetry cavity plate is equipped with stop gauge;The stop gauge includes the arch that bottom is equipped with rectangular through holes Plate and the striker plate being mounted in rectangular through holes.
4. a kind of large-scale band lug magnesium alloy component shaping dies according to claim 1, it is characterised in that described Sphere of movements for the elephants pintongs cavity plate is to constitute sphere of movements for the elephants shape cavity plate by the small cavity plate of pintongs;The middle part of the small cavity plate of pintongs forms " ten " font type Chamber;" ten " font type chamber is equipped with pattern draft;The edge of " ten " font type chamber is rounded down.
5. a kind of large-scale band lug magnesium alloy component shaping dies according to claim 1, it is characterised in that it is described not The upper end of regular non-axis symmetry cavity plate is equipped with stop gauge;The stop gauge includes the arch that bottom is equipped with rectangular through holes Plate and the striker plate being mounted in rectangular through holes.
CN201710858741.7A 2017-09-13 2017-09-13 A kind of large-scale band lug magnesium alloy component shaping dies Active CN107442589B (en)

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CN107442589B true CN107442589B (en) 2018-11-23

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* Cited by examiner, † Cited by third party
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US5732586A (en) * 1996-09-19 1998-03-31 Ford Global Technologies, Inc. Cold extrusion for helical gear teeth
CN100425366C (en) * 2006-06-13 2008-10-15 中北大学 Integral extrusion forming method for asymmetrical assembly parts and apparatus thereof
CN101474642B (en) * 2008-10-24 2011-01-05 中北大学 Multiway shaping method of magnesium alloy wheel and mold
CN102527763A (en) * 2010-12-08 2012-07-04 高雄应用科技大学 Construction and design method of asymmetric product extrusion die of high-strength aluminum alloy
CN102319757B (en) * 2011-08-18 2013-11-20 中国兵器工业第五二研究所 Preparation method of magnesium alloy variable-section cylindrical member by composite extrusion deformation
CN104588428B (en) * 2014-12-16 2017-02-22 中北大学 Circular channel and corner based extruding and moulding mold and circular channel and corner based extruding and moulding method of magnesium alloy cup-shaped component
CN106825098B (en) * 2017-01-07 2018-09-18 中北大学 A kind of differential-velocity extrusion shaping dies of magnesium alloy high-performance cup shell

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