CN106984751B - A kind of the metalwork plate forging forming method and mold of the two-way protrusion of bottom belt - Google Patents

A kind of the metalwork plate forging forming method and mold of the two-way protrusion of bottom belt Download PDF

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Publication number
CN106984751B
CN106984751B CN201710407939.3A CN201710407939A CN106984751B CN 106984751 B CN106984751 B CN 106984751B CN 201710407939 A CN201710407939 A CN 201710407939A CN 106984751 B CN106984751 B CN 106984751B
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pin
punch
press machine
annular
cylinder
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CN106984751A (en
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董文正
张存园
林启权
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Xiangtan University
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Xiangtan University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02Die forging; Trimming by making use of special dies ; Punching during forging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/08Accessories for handling work or tools
    • B21J13/14Ejecting devices

Abstract

The present invention discloses the metalwork plate forging forming method and mold of a kind of two-way protrusion of bottom belt, manufacturing process includes the following steps, 1) slab after preform is put into cavity plate, upper mold includes punch-pin, punch-pin is externally provided with the annular punch-pin for being oriented to be slidably matched therewith, punch-pin and annular punch-pin are connect with outer cylinder body output end in press machine top respectively, and annular punch-pin thickens bottom slab bottom and end pressurization respectively with the load for being greater than punch-pin;2) load of annular punch-pin is constant, increases punch-pin load, and base material is made to shunt filling, part needed for shaping;3) knockout course, the punch-pin and annular punch-pin that the interior outer cylinder body first above press machine is separately connected remain stationary, and extract the mandrel linked with cylinder body output end below press machine out, subsequent press machine drives punch-pin and annular punch-pin backhaul, ejects formation of parts.The metalwork of the formable high protrusion of the present invention, dimensional accuracy, surface quality, reduces shaping load, improves die life.

Description

A kind of the metalwork plate forging forming method and mold of the two-way protrusion of bottom belt
Technical field
The present invention relates to metal material forgings (plasticity) to form field, more particularly to a kind of two-way protrusion of bottom belt Metalwork plate forging forming method and mold.
Background technique
Bottom belt bidirectional hollow protrusion cup type metalwork is the knot that can be used for the fields such as aerospace, automobile, electronic apparatus Component and fitting, needs certain carrying and stronger corrosion resistance, and Surface Quality and dimensional accuracy have very high requirement.It is right For traditional machine cut processing, welding, casting, it is more that there are processes, and intensity and stock utilization are low, the essence of formation of parts The problems such as low to be spent, when according to extrusion molding, since shaping load is big, needs large tonnage press machine, die life is short, this External hollow height of projection is insufficient.
Summary of the invention
It is above-mentioned to solve the object of the present invention is to provide a kind of metalwork plate forging forming method of the two-way protrusion of bottom belt Problem of the existing technology, the manufacturing process are effectively reduced shaping load, reduce process, and it is high to increase bidirectional hollow protrusion Degree, improves the dimensional accuracy and surface quality of part;The present invention also provides a kind of for implementing the plate forging and molding of the above method The defects of mold, can be realized the forming of outer cup bottom small round corner, effectively avoid folding, crackle, is conducive to increase two-way Hollow height of projection.
To achieve the above object, the present invention provides following schemes: the present invention provides a kind of gold of two-way protrusion of bottom belt Belong to part plate forging forming method, comprising the following steps:
1) plate is pre-formed into the slab of bottom of which has holes, is to be oriented to for the slab to be put on press machine to install with mandrel Plate forging and molding mold cavity plate in, the connected punch-pin of two output ends and annular punch-pin are respectively to cup type above the press machine Base bottom and end pressurization, and the annular punch-pin load is greater than the load of the punch-pin;
2) the press machine pressurization obtains so that the load of the punch-pin is greater than the load that the annular punch-pin is applied Required design of part size;
3) knockout course protects the punch-pin being separately connected with the interior outer cylinder body above the press machine and annular punch-pin The mandrel motionless, extraction is connect with cylinder body output end below the press machine is held, then the press machine drives described convex Mould and annular punch-pin backhaul, eject formation of parts.
Optionally, in step 1), two output ends drive the punch-pin and annular punch-pin downlink above the press machine, simultaneously The press machine controls the magnitude of load of the punch-pin and annular punch-pin, applies after contacting with cup type base bottom and end Load thickens the aggregation of bottom plate.
Optionally, in step 2), the output end that the press machine connects the punch-pin drives the punch-pin, connects the ring The output end driving of the shape punch-pin annular punch-pin, the filling of control metal shunt and regurgitant volume, until condition needed for forming.
Optionally, after the completion of step 2), keep the punch-pin and annular punch-pin motionless, cylinder body output below the press machine End drives the mandrel movement.
Optionally, in step 3), two output ends drive the punch-pin and ring being attached thereto above the press machine described first The synchronized backhaul of shape punch-pin, after leaving the cavity plate, the punch-pin fast backhaul different with annular punch-pin.
Optionally, in step 3), two output end of press machine described first drives the punch-pin being attached thereto and convex annular The synchronized backhaul of mould, until the annular punch-pin resets, then the press machine drives the punch-pin to continue backhaul, thus ejection at The product of shape.
Optionally, there is inside cylinder body driving mechanism and outside cylinder body driving mechanism, the inside above the press machine Cylinder body driving mechanism is connected with two output ends above the press machine respectively with the outside cylinder body driving mechanism;In described Side cylinder body driving mechanism is sequentially connected by output end and the punch-pin, and the outside cylinder body driving mechanism passes through output end and institute State annular punch-pin transmission connection;There is cylinder body driving mechanism, the cylinder body driving mechanism and the mandrel below the press machine Connection.
Metalwork plate after machine-shaping is had the wall thickness such as 3 D stereo feature by the hollow protrusion of outer cup and two or is differed Wall thickness cup configuration composition, outer cup bottom is with hollow cup-shaped structure raised in axially opposite direction, outer cup type and hollow convex It is unrestricted to play cup type cross-section profile shape.
The present invention also provides a kind of metalwork plate forging and molding molds of the two-way protrusion of bottom belt, for realizing above-mentioned one The metalwork plate forging forming method of the kind two-way protrusion of bottom belt, including upper die and lower die, the upper mold include punch-pin and annular Punch-pin, the punch-pin are offered along axial central through hole, and the punch-pin outer sheath is equipped with the annular punch-pin, and the punch-pin is used It is connected in the inside cylinder body driving mechanism with press machine, the annular punch-pin is for the outside cylinder body driving mechanism with the pressure It is connected;The lower die includes cavity plate, casing and mandrel, and the center of the cavity plate is equipped with aperture, and the inside of the aperture is equipped with institute Casing is stated, and the upper surface of described sleeve pipe is lower than the aperture top, is equipped with the mandrel, the mandrel and institute in described sleeve pipe The cylinder body driving mechanism for stating press machine is connected.
Optionally, the punch-pin is slidably matched with annular punch-pin guiding, and the aperture is used with described sleeve pipe and is slidably matched, Described sleeve pipe is slidably matched with mandrel guiding.
The present invention achieves following technical effect compared with the existing technology:
The present invention proposes a kind of metalwork plate forging forming method of two-way protrusion of bottom belt, when plate forging and molding, by plate Material is pre-formed into the cup type base of bottom of which has holes, is that guiding is put into cavity plate with mandrel, two output shaft phases above control press machine The magnitude of load of the punch-pin and annular punch-pin that should connect, respectively pressurizes to cup type base bottom and end, realizes the orientation of material Plastic Flow, contoured bottom band bidirectional hollow protrusion cup type metalwork by mandrel friction of motion, it can be achieved that acted on to improve hole Cardiac prominence plays the surface quality of inside, to reduce shaping load, reduces manufacturing procedure, shapes whole bottom belt bidirectional hollow protrusion cup Type metalwork significantly improves the precision and surface quality of part, furthermore by replacement punch-die, it can be achieved that outer cup bottom roundlet The forming at angle, effectively avoid fold, crackle the defects of, be conducive to increase bidirectional hollow height of projection.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is that a kind of structure of the state one of the metalwork plate forging and molding mold of the two-way protrusion of bottom belt of the invention is shown It is intended to;
Fig. 2 is that a kind of structure of the state two of the metalwork plate forging and molding mold of the two-way protrusion of bottom belt of the invention is shown It is intended to;
Fig. 3 is the forming process schematic diagram of the invention with two-way protruding metal part plate;
Wherein, 1 lower die holder;2 lower bolts;3 casings;4 cavity plates;5 annular punch-pin;6 fixed plates;
7 upper die holders;Bolt on 8;9 punch-pin;10 mandrels;11 backing plates.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
It is above-mentioned to solve the object of the present invention is to provide a kind of metalwork plate forging forming method of the two-way protrusion of bottom belt Problem of the existing technology, the manufacturing process are effectively reduced shaping load, reduce process, and it is high to increase bidirectional hollow protrusion Degree, improves the dimensional accuracy and surface quality of part;The present invention also provides a kind of for implementing the plate forging and molding of the above method The defects of mold, can be realized the forming of outer cup bottom small round corner, effectively avoid folding, crackle, is conducive to increase two-way Hollow height of projection.
The metalwork plate forging forming method of the two-way protrusion of bottom belt of the invention, comprising the following steps:
1) plate is pre-formed into the slab of bottom of which has holes, is to be oriented to for the slab to be put on press machine to install with mandrel Plate forging and molding mold cavity plate in, the connected punch-pin of two output ends and annular punch-pin are respectively to cup type base above press machine Bottom and end pressurization, and annular punch-pin load is greater than the load of punch-pin;
2) press machine pressurizes, so that the load of punch-pin is greater than the load that annular punch-pin is applied, design of part needed for obtaining Size;
3) knockout course remains stationary the punch-pin being separately connected with the interior outer cylinder body above press machine and annular punch-pin, Extraction drives punch-pin and annular punch-pin backhaul with the mandrel that connect of cylinder body output end below press machine, subsequent press machine, eject at Shape part.
Plate is pre-formed into the cup type base of bottom of which has holes in plate forging and molding by operator, is guiding with mandrel It is put into cavity plate, the magnitude of load of two output shafts accordingly connect above control press machine punch-pin and annular punch-pin, respectively to cup Type base bottom and end pressurization, realize the orientation Plastic Flow of material, contoured bottom band bidirectional hollow protrusion cup type metalwork, To realize reduction shaping load, manufacturing procedure is reduced, whole bottom belt bidirectional hollow protrusion cup type metalwork is shaped.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
Please refer to Fig. 1-3, wherein Fig. 1 is a kind of metalwork plate forging and molding mould of the two-way protrusion of bottom belt of the invention The structural schematic diagram of the state one of tool;Fig. 2 is a kind of metalwork plate forging and molding mold of the two-way protrusion of bottom belt of the invention State two structural schematic diagram;Fig. 3 is the forming process schematic diagram of the invention with two-way protruding metal part plate.
As depicted in figs. 1 and 2, metalwork plate forging forming method of the invention the following steps are included:
It 1) is that guiding is put into the recessed of the plate forging and molding mold installed on press machine with mandrel 10 by the slab after preform In mould 4.There is interior outside cylinder body drive output, lower section has a cylinder body drive output, on plate forging and molding above press machine Mould includes punch-pin 9, and an annular punch-pin 5 is provided with outside punch-pin, and punch-pin 9 is slidably matched with the annular guiding of punch-pin 5, and inside cylinder body drives The output end of motivation structure is connected with punch-pin 9, and outside cylinder body driving mechanism output end is connected with annular punch-pin 5, starts press machine, pressure Inside cylinder body driving mechanism and outside cylinder body driving mechanism above power machine act and drive the convex of output end transmission connection therewith Mould 9 and annular 5 downlink of punch-pin respectively pressurize to cup type base bottom and end, as shown in Figure 1, and 9 load of punch-pin it is constant, and ring 5 load of shape punch-pin increases so that cylindrical wall material flows to bottom and thickens part as shown in Figure 3c, the part barrel bore with 9 diameter of punch-pin is equal, outside diameter of cylinder is equal with cavity plate diameter, bottom thickness t2, highly be h2, low aperture be φ d2
2) as shown in Fig. 2, loading constant load to the annular punch-pin 5 of press machine upper outer cylinder body driving mechanism connection Lotus, and 9 load of punch-pin of inside cylinder body driving mechanism connection increases, and shunts the material for being collected at bottom to mandrel 10 and punch-pin 9, two cavity fillings up and down that cavity plate 4, casing 3 form, while a part of material is flowed back to wall portion, until under punch-pin 9 The thickness that row is required to feature bottom, thus formed metal element bottom bidirectional hollow bulge-structure, total height H3, outer cup height For H1, the hollow raised outer diameter in lower section is φ d4, it is highly H2, two hollow raised internal diameters are φ d2, the hollow raised outer diameter in top is φ d3, bottom thickness t, the metal parts as shown in Fig. 3 (d);
3) after the completion of part forming, knockout course, press machine upper outer cylinder body driving mechanism and inside cylinder body driving machine The annular punch-pin 5 and punch-pin 9 that structure is separately connected remain stationary, and cylinder body driving mechanism output shaft extracts mandrel out below hydraulic coupling machine 10.To prevent on 4 inside of metalwork adhesion cavity plate shaped or 9 outer peripheral surface of punch-pin, hydraulic coupling machine drives 9 He of punch-pin first Annular 5 backhaul simultaneously of punch-pin, after being detached from cavity plate 4, hydraulic coupling machine drives 9 speed of punch-pin to be greater than annular 5 speed of punch-pin and returns Journey, thus the cup type part of liftout plate forging and molding.
Metalwork in the present embodiment needs to improve the medial surface quality of two hollow protrusions, and mandrel 10 need to only be driven to carry out Repeatedly movement, in other embodiments of the invention if drip molding is not high to the medial surface quality requirement of drag cup, either Two drag cup structures are different, without driving mandrel 10 to move, need to only deviate from mandrel.
It is press machine first in the process of die sinking in the present embodiment to prevent drip molding from sticking on 9 outer peripheral surface of punch-pin 5 backhaul simultaneously of punch-pin 9 and annular punch-pin is driven, until annular punch-pin 5 resets, then press machine drives punch-pin 9 to continue backhaul, from And the cup type part of liftout plate forging and molding.
A kind of metalwork plate forging and molding mold of the two-way protrusion of bottom belt of the invention, as depicted in figs. 1 and 2, the cup Type metalwork plate forging and molding mold includes upper die and lower die part, and upper mold includes for driving with press machine upper outer cylinder body The upper die holder 7 of mechanism output end connection, 7 lower section of upper die holder are detachably connected backing plate 11 by upper bolt 8, connect below backing plate 11 There is annular punch retainer 6, annular punch retainer 6, which is offered, installs annular punch-pin along the axial central through hole of annular punch-pin 5 5, the punch-pin 9 being slidably matched therewith is provided in annular punch-pin 5, punch-pin 9 is offered along axial central through hole, 7 He of upper die holder Backing plate 11 offers the central communication hole installed with punch-pin 9, inside cylinder body driving mechanism output end above punch-pin 9 and press machine Transmission connection;Lower die includes the lower die holder 1 of bottom, is detachably provided with cavity plate 4,4 bottom of cavity plate by lower bolt 2 on lower die holder 1 Portion, which is offered, installs fixed sleeving 3 along the axial central through hole of casing 3, and 3 upper end of casing is lower than 4 bottom surface of cavity plate, setting in casing 3 There is the mandrel 10 being slidably matched therewith, cylinder body output shaft is sequentially connected below mandrel 10 and press machine.
In metalwork plate forging and molding mold, punch-pin 9 has along axial central through hole, the structure size and gold of central through hole Belonging to part bottom, hollow raised lateral surface structure size is consistent upwards;4 center hole structure size of cavity plate respectively with metalwork bottom to Under hollow raised lateral surface be consistent with 3 lateral surface structure size of casing, the structure size and the two-way sky in metalwork bottom of mandrel 10 Cardiac prominence rise lateral surface structure size be consistent, under molding state, mandrel 10 should run through two hollow protrusions, and beyond it is formed thereby most Big height.
It should be noted that size in the process of the above embodiment of the present invention drip molding and after processing is completed is simultaneously It is not limited to above-mentioned size, above-mentioned a series of size is only a simple reference, associated or identical statement side Formula is fallen within the scope of protection of the present invention.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments Illustrate to be merely used to help understand method and its core concept of the invention;At the same time, for those skilled in the art, according to According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification It should not be construed as limiting the invention.

Claims (9)

1. a kind of metalwork plate forging forming method of the two-way protrusion of bottom belt, it is characterised in that: the following steps are included:
1) plate is pre-formed into the slab of bottom of which has holes, is that the slab is put into the plate installed on press machine by guiding with mandrel In the cavity plate of forging and molding mold, the connected punch-pin of two output ends and annular punch-pin are respectively to cup type base above the press machine Bottom and end pressurization, and the annular punch-pin load is greater than the load of the punch-pin;
2) the press machine pressurization, so that the load of the punch-pin is greater than the load that the annular punch-pin is applied, needed for acquisition Design of part size;
3) knockout course keeps the punch-pin being separately connected with the interior outer cylinder body above the press machine and annular punch-pin not The mandrel dynamic, that extraction connect with cylinder body output end below the press machine, then the press machine drive punch-pin with Annular punch-pin backhaul ejects formation of parts.
2. the metalwork plate forging forming method of the two-way protrusion of bottom belt according to claim 1, it is characterised in that: step 1) in, two output ends drive the punch-pin and annular punch-pin downlink above the press machine, while described in press machine control The magnitude of load of punch-pin and annular punch-pin, applies load after contacting with cup type base bottom and end, keeps bottom plate poly- Collection thickens.
3. the metalwork plate forging forming method of the two-way protrusion of bottom belt according to claim 1, it is characterised in that: step 2) in, the output end that the press machine connects the punch-pin drives the punch-pin, connects the output end driving of the annular punch-pin The annular punch-pin, the filling of control metal shunt and regurgitant volume, until condition needed for forming.
4. the metalwork plate forging forming method of the two-way protrusion of bottom belt according to claim 1, it is characterised in that: step 2) after the completion of, keep the punch-pin and annular punch-pin motionless, cylinder body output end drives the mandrel movement below the press machine.
5. the metalwork plate forging forming method of the two-way protrusion of bottom belt according to claim 1, it is characterised in that: step 3) in, two output ends drive the punch-pin being attached thereto and the synchronized backhaul of annular punch-pin above the press machine described first, leave After the cavity plate, the punch-pin fast backhaul different with annular punch-pin.
6. the metalwork plate forging forming method of the two-way protrusion of bottom belt according to claim 1, it is characterised in that: step 3) in, two output end of press machine described first drives the punch-pin being attached thereto and the synchronized backhaul of annular punch-pin, until described Annular punch-pin resets, and then the press machine drives the punch-pin to continue backhaul, to eject the product of forming.
7. the metalwork plate forging forming method of the two-way protrusion of bottom belt according to claim 1, it is characterised in that: described There is inside cylinder body driving mechanism and outside cylinder body driving mechanism, the inside cylinder body driving mechanism and described outer above press machine Side cylinder body driving mechanism is connected with two output ends above the press machine respectively;The inside cylinder body driving mechanism passes through defeated Outlet and the punch-pin are sequentially connected, and the outside cylinder body driving mechanism is sequentially connected by output end and the annular punch-pin; There is cylinder body driving mechanism, the cylinder body driving mechanism is connect with the mandrel below the press machine.
8. a kind of metalwork plate forging and molding mold of the two-way protrusion of bottom belt, for realizing any one of claim 1-7 institute The metalwork plate forging forming method of the two-way protrusion of the bottom belt stated, it is characterised in that: including upper die and lower die, the upper mold packet Punch-pin and annular punch-pin are included, the punch-pin is offered along axial central through hole, and the punch-pin outer sheath is equipped with the convex annular Mould, for being connected with the inside cylinder body driving mechanism of press machine, the annular punch-pin is used for and the press machine punch-pin Outside cylinder body driving mechanism is connected;The lower die includes cavity plate, casing and mandrel, and the center of the cavity plate is equipped with aperture, described The inside of aperture is equipped with described sleeve pipe, and the upper surface of described sleeve pipe is lower than the aperture top, is equipped in described sleeve pipe described Mandrel, the mandrel are connected with the cylinder body driving mechanism of the press machine.
9. the metalwork plate forging and molding mold of the two-way protrusion of bottom belt according to claim 8, it is characterised in that: described Punch-pin is slidably matched with annular punch-pin guiding, and the aperture is used with described sleeve pipe and is slidably matched, described sleeve pipe and the mandrel Guiding is slidably matched.
CN201710407939.3A 2017-06-02 2017-06-02 A kind of the metalwork plate forging forming method and mold of the two-way protrusion of bottom belt Active CN106984751B (en)

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CN109079074A (en) * 2018-08-16 2018-12-25 湘潭大学 A kind of plate forging forming method and its mold that metalwork bottom thickens
CN110293148B (en) * 2019-06-21 2020-09-29 上海正玺新材料科技有限公司 Magnesium alloy plate stamping and forging composite forming method

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CN1887474A (en) * 2006-07-14 2007-01-03 哈尔滨工业大学 Model and method for liquid state formation of aluminium hub disc for special vehicle
JP2010064100A (en) * 2008-09-10 2010-03-25 Daido Steel Co Ltd Gear production device and method for producing the same
CN203003032U (en) * 2012-12-25 2013-06-19 滁州市精华模具制造有限公司 Precision forging extrusion die device
CN103192015A (en) * 2013-04-10 2013-07-10 西安建筑科技大学 Automotive alternator claw-pole closed-type hot-forging device and process thereof
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