CN104438589B - A kind of automobile dash board Lower extension Sheet Metal Forming Technology and mould - Google Patents

A kind of automobile dash board Lower extension Sheet Metal Forming Technology and mould Download PDF

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Publication number
CN104438589B
CN104438589B CN201410466001.5A CN201410466001A CN104438589B CN 104438589 B CN104438589 B CN 104438589B CN 201410466001 A CN201410466001 A CN 201410466001A CN 104438589 B CN104438589 B CN 104438589B
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mold
holding pad
auxiliary holding
cylinder
plate
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CN104438589A (en
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蔡锡斌
陆静易
周林
曾令超
莫声明
黄锃
彭文虎
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Liuzhou Wuling Automobile Industry Co Ltd
Guangxi Automobile Group Co Ltd
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Liuzhou Wuling Automobile Industry Co Ltd
Guangxi Automobile Group Co Ltd
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Abstract

The invention discloses a kind of automobile dash board Lower extension Sheet Metal Forming Technology and mould, use new drawing die mould structure and die face technique, reduce the scrappage of process part processing in production process, and in the case of process part processing shape is unfavorable for that stock utilization promotes, it is achieved that promote stock utilization, ensure accessory size and the purpose of presentation quality;The content of compression Sheet Metal Forming Technology, in the case of requiring to reduce lathe usage quantity and operator's quantity, it is achieved one group of mould of the component sharing of two kinds of relevant vehicles produces.After Sheet Metal Forming Technology change, the stock utilization of certain vehicle front panel Lower extension (left/right) part existing can improve 9%, and the board dimension used also has the space reduced further;The scrappage of drawing operation part is reduced to present less than 0.2% by original 4.5%;The qualification rate of part has been brought up to entirely reach more than 92% by 80%~the 87% of original instability.

Description

A kind of automobile dash board Lower extension Sheet Metal Forming Technology and mould
Technical field
The present invention relates to stamp forming technology field, particularly to a kind of automobile dash board Lower extension punching press Technique and mould.
Background technology
The plate of existing automobile dash board Lower extension is rectangle plate, a size of 925mm × 635mm. The binder mode of its drawing die is that four limits compressions feed simultaneously.
Below in conjunction with concrete techniqueflow, the drawing work of this part is described further:
Before A, the drawing action of plate start, the blanking cutter being contained on holding pad and upper bolster is by rectangular slab Two corner blankings of material, the structure of its lower mold and upper mold is as Figure 1-Figure 4;
Plate 4 regions up and down are compressed by B, upper mold and holding pad, start drawing action, plate Flow to mold center via these 4 regions.
The technique of vehicle I front panel Lower extension (left/right) is arranged as shown in Figure 5-Figure 8, is followed successively by OP10 drawing, OP20 trimming pre-punched hole, OP30 flanging and restriking separate with OP40 punching side punching.This work The part connecting method of skill can avoid process part processing to form semi-enclosed cavity, and the control to stock utilization has relatively Big help.
But existing punching production technological design existing defects, part material is high-yield strength plate, mould Can cause, after tool use time length, the accessory size qualification rate Quality Down produced, and due to tensioning member Cracking, (scrappage of drawn component is to cause the part drawing crack scrappage in actual production process to uprise Reach 4.5%);And the process part processing connecting method of front panel Lower extension (left/right) part has been formed Closed cavity, designs mould by common stamping parts forming technology and can not fundamentally promote material use Rate.
Therefore, for above-mentioned situation, it is ensured that accessory size and presentation quality, the material use of part is improved Rate, reduces part rejection rate, becomes the important technological problems that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of automobile dash board Lower extension Sheet Metal Forming Technology and mould, right The Sheet Metal Forming Technology of front panel Lower extension (left/right) has carried out change mould newly developed, improves zero Part size quality, improves the stock utilization of part, reduces part rejection rate.
For achieving the above object, the present invention provides following technical scheme:
A kind of automobile dash board Lower extension Sheet Metal Forming Technology, including step:
S1, OP10 drawing die, including step:
S11, upper mold move downward, until being installed on the upper mold auxiliary holding pad contact plate within upper bolster Material;Now by upper mold auxiliary holding pad, it is installed on the lower mold auxiliary holding pad within die shoe by plate Cavity edge region in four limits is pushed down, and is installed on the lower mold cylinder within lower mold and orders about lower mold auxiliary pressure Flitch upwards jack-up upper mold auxiliary holding pad, subsequently into step S12;
S12, be installed on the upper mold cylinder within upper mold order about upper mold auxiliary holding pad move downward, upper mold Cylinder pressure is more than being installed on the lower mold cylinder pressure within lower mold, and upper mold cylinder will be originally by lower mold cylinder Order about the upper mold auxiliary holding pad pressure of upwards jack-up, and make the plate generation shape of cavity edge areas adjacent Becoming, until the deformation of this part plate is consistent with die face, auxiliary holding pad can be only achieved relatively up and down Resting state, subsequently into step S13;
S13, upper mold continue to move downward, the plate die profile by upper mold and the main holding pad pressure of lower mold Living other three edge regions, along with upper mold continues to move downward, plate is to mold center's direction flowing, simultaneously Cavity edge region in plate is compressed will not flow by upper mold auxiliary holding pad and lower mold auxiliary holding pad Dynamic;After mould reaches end state, enter step S14;
S14, make upper mold auxiliary holding pad, die profile and lower mold auxiliary holding pad, main holding pad at mould Has separated in synchronization during opening, until upper mold auxiliary holding pad is finally complete with lower mold auxiliary holding pad Separate, subsequently into step S2;
S2, OP20 edger: once cut out in most of sideline of part, only retains local the most earnestly While to facilitate process part processing to transmit to subsequent processing, subsequently into step S3;
S3, OP30 piercing and flanging splitting die;Including separation, punching, flange and shaping, subsequently into Step S4;
S4, OP40 incised notch mouth die.
Preferably, plate is isosceles trapezoid plate, and its long limit is cavity sides.
Preferably, in step S14, auxiliary holding pad is synchronized/forces back body and pushes away by the cylinder of lower mold Become owner of between holding pad and upper mold auxiliary holding pad, make upper mold auxiliary holding pad, die profile and lower mold auxiliary Pressing aid flitch, main holding pad realize separated in synchronization, until upper mold auxiliary holding pad is final and lower mold auxiliary pressure Flitch is kept completely separate.
Preferably, step S14 also includes: finally complete with lower mold auxiliary holding pad at upper mold auxiliary holding pad After fully separating, auxiliary holding pad is synchronized/forces back body by main holding pad and upper mold by the cylinder of lower mold Retract between auxiliary holding pad;If cylinder retracts inefficacy, force to retract hook auxiliary holding pad can be synchronized/ Back body is forced to retract in situ.
Preferably, the OP40 incised notch mouth die in step S4, with the OP30 piercing and flanging in step S3 Splitting die is placed on same press use.
A kind of automobile dash board Lower extension diel, including upper die and lower die, internally installed in upper mold There are upper mold auxiliary holding pad, die profile and upper mold cylinder, the position of upper mold auxiliary holding pad and plate four Cavity edge region in individual limit is relative, and upper mold auxiliary holding pad has the cavity edge region with plate Corresponding forming surface, upper mold cylinder can order about upper mold auxiliary holding pad and move downward;
There are lower mold auxiliary holding pad, main holding pad and lower mold cylinder, lower mold auxiliary pressure lower mold is internally installed Cavity edge region in four limits in the position of flitch and plate is relative, and lower mold auxiliary holding pad have with The corresponding forming surface in cavity edge region of plate, lower mold cylinder can order about lower mold auxiliary holding pad upwards Motion;
Upper mold cylinder pressure is more than lower mold cylinder pressure;
Main holding pad includes the part relative with other three edge regions in four limits of plate with die profile.
Preferably, upper mold cylinder and lower mold cylinder are nitrogen cylinder.
Preferably, also include that the cylinder being installed on the main holding pad of lower mold and auxiliary holding pad synchronize/force Back body, cylinder can drive with lathe source of the gas, auxiliary holding pad synchronizes/force back body at symbol The suitable time points closing press runs pushes between main holding pad and upper mold auxiliary holding pad in time.
Preferably, also include that the pressure being installed on lower mold retracts hook, it is possible to when lathe source of the gas lost efficacy by auxiliary Pressing aid flitch synchronizes/forces back body and retracted by between main holding pad and upper mold auxiliary holding pad.
From above-mentioned technical scheme it can be seen that the present invention provide automobile dash board Lower extension presser Skill, uses new drawing die mould structure and die face technique, by the material type of flow of drawing die by tradition 4 limits charging become 3 limits charging, although the process part processing of this Sheet Metal Forming Technology is semi-enclosed cavity, but by Do not have material to flow in open cavity beyond, promoted so stock utilization will not reduce; Reduce the scrappage of process part processing in production process, and be unfavorable for that stock utilization promotes in process part processing shape In the case of, it is achieved that promote stock utilization, ensure accessory size and the purpose of presentation quality.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below, Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art, On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the lower mold of drawing die in prior art;
Fig. 2 is the structural representation of the upper mold of drawing die in prior art;
Fig. 3 is the sectional view in Fig. 1 along Section A-A;
Fig. 4 is the sectional view in Fig. 1 along section B-B;
Fig. 5 is the schematic diagram of draw step in existing Sheet Metal Forming Technology;
Fig. 6 is the schematic diagram of (trimming+pre-punched hole) step in existing Sheet Metal Forming Technology;
Fig. 7 is the schematic diagram of (flange+shaping) step in existing Sheet Metal Forming Technology;
Fig. 8 is the schematic diagram of (punching+separation) step in existing Sheet Metal Forming Technology;
The structural representation of the lower mold of the drawing die that Fig. 9 provides for the embodiment of the present invention;
The structural representation of the upper mold of the drawing die that Figure 10 provides for the embodiment of the present invention;
Figure 11 is the sectional view in Fig. 9 along Section A-A;
Figure 12 is the sectional view in Fig. 9 along section B-B;
The schematic diagram of draw step in the Sheet Metal Forming Technology that Figure 13 provides for the embodiment of the present invention;
The schematic diagram of trimming process in the Sheet Metal Forming Technology that Figure 14 provides for the embodiment of the present invention;
(separation+punching+flange+shaping) step in the Sheet Metal Forming Technology that Figure 15 provides for the embodiment of the present invention Schematic diagram;
During another vehicle part of production that Figure 16 provides for the embodiment of the present invention, the steel plate mould used The schematic diagram of Sheet Metal Forming Technology (trimming) step.
Wherein, 1 is cylinder, and 2 synchronize/force back body for auxiliary holding pad, and 3 assist binder for lower mold Plate, 4 is main holding pad, and 5 is die shoe, and 6 is punch, and 7 retract hook for pressure, and 8 assist for upper mold Holding pad, 9 is die profile, and 10 is upper bolster, and 11 is upper mold cylinder, and 12 is lower mold cylinder.
Detailed description of the invention
The invention discloses a kind of automobile dash board Lower extension Sheet Metal Forming Technology and mould, downward to front panel Stretch the Sheet Metal Forming Technology of part (left/right) and carried out change mould newly developed, improve accessory size matter Amount, improves the stock utilization of part, reduces part rejection rate.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
Refer to the structural representation of the lower mold of the drawing die that Fig. 9-Figure 16, Fig. 9 provide for the embodiment of the present invention Figure;The structural representation of the upper mold of the drawing die that Figure 10 provides for the embodiment of the present invention;Figure 11 is Fig. 9 The middle sectional view along Section A-A;Figure 12 is the sectional view in Fig. 9 along section B-B;Figure 13 is this The schematic diagram of draw step in the Sheet Metal Forming Technology that bright embodiment provides;Figure 14 provides for the embodiment of the present invention Sheet Metal Forming Technology in the schematic diagram of trimming process;In the Sheet Metal Forming Technology that Figure 15 provides for the embodiment of the present invention The schematic diagram of (separation+punching+flange+shaping) step;The production that Figure 16 provides for the embodiment of the present invention During another vehicle part, the schematic diagram of Sheet Metal Forming Technology (trimming) step of the steel plate mould used.
The automobile dash board Lower extension Sheet Metal Forming Technology that the embodiment of the present invention provides, its core improvement exists In, including step:
S1, OP10 drawing die, including step:
S11, upper mold move downward, and connect until being installed on the upper mold auxiliary holding pad 8 within upper bolster 10 Touch panel material;Now by upper mold auxiliary holding pad 8, it is installed on the lower mold auxiliary binder within die shoe 5 Cavity edge region in four limits of plate is pushed down by plate 3, is installed on the lower mold cylinder 12 within lower mold and drives Make lower mold auxiliary holding pad 3 upwards jack-up upper mold auxiliary holding pad 8, subsequently into step S12;
S12, be installed on the upper mold cylinder 11 within upper mold order about upper mold auxiliary holding pad 8 move downward, Upper mold cylinder 11 pressure is more than being installed on lower mold cylinder 12 pressure within lower mold, and upper mold cylinder 11 is by former This upper mold auxiliary holding pad 8 being ordered about upwards jack-up by lower mold cylinder 12 is depressed, and makes cavity edge region Neighbouring plate deforms upon, until the deformation of this part plate is consistent with die face, assists pressure up and down Flitch can be only achieved relative static conditions, subsequently into step S13;In this step, plate is allowed Locally (cavity edge region) is starting first molding before pulling action for the consistent shape of mould local profile Become;
After S13, upper mold auxiliary holding pad 8 and lower mold auxiliary holding pad 3 reach relative static conditions, on Mould continues to move downward, plate by the die profile 9 of upper mold and the main holding pad 4 of lower mold push down other three Edge regions, along with upper mold continues to move downward, plate is to mold center's direction flowing, simultaneously in plate Cavity edge region is compressed will not flow by upper mold auxiliary holding pad 8 and lower mold auxiliary holding pad 3; After mould reaches end state, enter step S14;
S14, make upper mold auxiliary holding pad 8, die profile 9 and lower mold auxiliary holding pad 3, main holding pad 4 during mould is opened separated in synchronization, press until upper mold auxiliary holding pad 8 is final with lower mold auxiliary Flitch 3 is kept completely separate, subsequently into step S2;So far mould completes a complete pulling action, and Tensioning member is not because the separated in synchronization of several parts deforms;
S2, OP20 edger: once cut out in most of sideline of part, only retains local the most earnestly While to facilitate process part processing to transmit to subsequent processing, subsequently into step S3;Original Sheet Metal Forming Technology is due to operation Part has side cut step, it is necessary to the trimming operation of process part processing is arranged to twice sequence, and (two mold OP20 are just Cut and cut with OP40 side), and improve the process part processing after technique and can not use side cutting process, new technology The improvement of operation content compression is the equal of to be fused to by the trimming work step of OP20 and OP40 of old technology Existing OP20 shaving die, once cuts out most of sideline of part, retains local tangent trimming To facilitate process part processing to transmit to subsequent processing;Owing to process part processing does not has completely separable, can be only with a people Process part processing is just put lower operation smoothly, and the design of new Sheet Metal Forming Technology can adapt to stream equally the most smoothly Waterline produces;
S3, OP30 piercing and flanging splitting die, including separation, punching, flange and shaping, subsequently into Step S4;
S4, OP40 incised notch mouth die.
From above-mentioned technical scheme it can be seen that the embodiment of the present invention provide automobile dash board Lower extension Sheet Metal Forming Technology, uses new drawing die mould structure and die face technique, by the material type of flow of drawing die 3 limits charging (as shown in figure 13) are become, although the operation of this Sheet Metal Forming Technology by 4 traditional limit chargings Part is semi-enclosed cavity, but owing to open cavity beyond (cavity sides) does not has material to flow, so material Expect that utilization rate will not reduce to have promoted;Reduce the scrappage of process part processing in production process, and In the case of process part processing shape is unfavorable for that stock utilization promotes, it is achieved that promote stock utilization, guarantee Accessory size and the purpose of presentation quality.
As preferably, plate is isosceles trapezoid plate, and its long limit is cavity sides.The most in step s 11, The longest edge region of plate is pushed down by upper mold auxiliary holding pad 8 and lower mold auxiliary holding pad 3, and at S12 In make this part of plate deform upon by the effect of cylinder;In step s 13, die profile 9 He Main holding pad 4 pushes down the minor face of plate and two these three edge regions of waist edge.By change part at drawing die Interior connecting method, is made production plate into isosceles trapezoid by rectangle, eliminates rectangle in prior art The process of two corner blankings of plate, while simplifying operation, also improves the utilization rate of material.
In order to optimize above-mentioned technical scheme further, in step S14, the cylinder 1 of lower mold will auxiliary Holding pad synchronizes/forces back body 2 and pushes between main holding pad 4 and upper mold auxiliary holding pad 8, makes Mould auxiliary holding pad 8, die profile 9 and lower mold auxiliary holding pad 3, main holding pad 4 realize synchronizing to divide From, until upper mold auxiliary holding pad 8 is finally kept completely separate with lower mold auxiliary holding pad 3.Complete at mould After pulling action, during upper mold moves upward along with lathe slide block, drive upper mold auxiliary holding pad 8 The power of upper mold cylinder 11 be delivered on main holding pad 4 by forced synchronism/backing mechanism 2, thus protect Demonstrate,proved main holding pad 4, die profile 9, upper and lower mould auxiliary holding pad be in during mould is opened The state of synchronization action, it is to avoid certain assembly is because the action asynchronous situation causing tensioning member to scrap goes out Existing
In the specific embodiment that this programme provides, step S14 also includes: assist holding pad 8 in upper mold Final be kept completely separate with lower mold auxiliary holding pad 3 after, the cylinder 1 of lower mold will auxiliary holding pad synchronize/by force Back body 2 processed is assisted by main holding pad 4 and upper mold and retracts between holding pad 8;If cylinder 1 retracts Lost efficacy, and forced to retract hook 7 and auxiliary holding pad can be synchronized/force back body 2 and retract original position.
The new drawing work used is owing to employing two pieces of auxiliary holding pads (on upper die and lower die each one Block), mould complete punching press action complete time, need to control well main holding pad 4 and upper mold and up and down The concordance of mould auxiliary holding pad motion, otherwise upper mold auxiliary holding pad 8 will be because of the work of nitrogen cylinder With, produce during mould is opened relative to upper mold motion down, drawn component top is deformed.This Time, two the auxiliary holding pads being arranged on main holding pad 4 synchronize/force back body 2 and begun to Act on.
By above-mentioned technique, it is possible to avoid upper mold auxiliary holding pad 8 during next punching press action Damage, and due to upper mold auxiliary holding pad 8 during die drawn action incorrect owing to being in Position and cause tensioning member to scrap.
In order to optimize above-mentioned technical scheme further, the OP40 incised notch mouth die in step S4, with step OP30 piercing and flanging splitting die in S3 is placed on same press use.Have compressed Sheet Metal Forming Technology, vehicle The production process of I part has 4 original roads to be reduced to 3 present roads.This time process change also has one Purpose, is to realize raw on same group of mould to realize the part of vehicle II and vehicle I newly developed Produce, and the trim lines of both vehicles only left member has local different, so a set of auxiliary work can also be increased Sequence (simple steel template die) is for producing the left member of another vehicle II.
The embodiment of the present invention additionally provides a kind of automobile dash board Lower extension diel, including upper mold and Lower mold, upper mold includes upper bolster 10 and die profile 9, and lower mold includes main holding pad 4, die shoe 5 and Punch 6, die profile 9 therein and punch 6 are corresponding, are respectively acting on the upper and lower surface of plate;
Its core improvement is, has upper mold auxiliary holding pad 8 and upper mold cylinder upper mold is internally installed 11, the cavity edge region in four limits in position and plate of upper mold auxiliary holding pad 8 is relative, and upper mold Auxiliary holding pad 8 has the corresponding forming surface in cavity edge region with plate, and upper mold cylinder 11 can drive Upper mold auxiliary holding pad 8 is made to move downward;Die profile 9 includes and other three limit in four limits of plate The part that region is relative;
There are lower mold auxiliary holding pad 3 and lower mold cylinder 12, lower mold auxiliary holding pad 3 lower mold is internally installed Four limits in position and plate in cavity edge region relative, and lower mold auxiliary holding pad 3 have and plate Material the corresponding forming surface in cavity edge region, lower mold cylinder 12 can order about lower mold auxiliary holding pad 3 to Upper motion;Main holding pad 4 includes the part relative with other three edge regions in four limits of plate;
The pressure that the pressure that upper mold cylinder 11 can provide can provide more than lower mold cylinder 12;In upper mold When auxiliary holding pad 8 contacts with lower mold auxiliary holding pad 3, assist holding pad 8 by upper mold) order about lower mold Auxiliary holding pad 3 moves downward.
It is internal that the lower mold auxiliary holding pad 3 that this programme provides is installed on die shoe 5, upper mold auxiliary holding pad 8 are installed on upper bolster 10 inside, and the two auxiliary holding pad all drives with nitrogen cylinder, upper mold auxiliary binder The nitrogen cylinder pressure of plate 8 is more than the nitrogen cylinder pressure of lower mold auxiliary holding pad 3.This upper and lower mould auxiliary pressure The effect of flitch plate has two: 1, allow the local of plate before starting pulling action first molding for mould The deformation that local profile is consistent.2, plate is compressed, when plate flows to mold center direction, effect The plate at above-mentioned position will not flow.
In order to optimize above-mentioned technical scheme further, this mould also includes the main holding pad being installed on lower mold Cylinder 1 and auxiliary holding pad on 4 synchronize/force back body 2, and cylinder 1 can drive with lathe source of the gas Dynamic, push main holding pad by synchronizing/force back body 2 in time at the suitable time points meeting press runs Between 4 and upper mold auxiliary holding pad 8, its structure is referred to shown in Fig. 9.Synchronize/force back body 2 are installed on main holding pad 4, when mould is pressed onto the end, lathe source of the gas drive cylinder 1, will synchronize/ Force back body 2 to push between main holding pad 4 and upper mold auxiliary holding pad 8, complete stretching at mould After action, during upper mold moves upward along with lathe slide block, drive the nitrogen of upper mold auxiliary holding pad 8 The power of cylinder is delivered on main holding pad 4 by synchronizing/force back body 2, thus ensure that main binder Plate 4, die profile 9, upper and lower mould auxiliary holding pad is in synchronization action during mould is opened State, it is to avoid certain assembly is because the asynchronous situation causing the tensioning member to scrap of action occurs.
As preferably, it is two that auxiliary holding pad synchronizes/force the quantity of back body 2, the most relatively sets Putting the both sides at main holding pad 4, cylinder 1 is corresponding two.
In the specific embodiment that this programme provides, mould also includes that the pressure being installed on lower mold retracts hook 7, it is possible to auxiliary holding pad synchronizes/forces back body 2 by main holding pad 4 when lathe source of the gas lost efficacy And retract between upper mold auxiliary holding pad 8, its structure is referred to shown in Figure 10.Below in conjunction with concrete work The technological process of this programme drawing die is described further by process of making:
(1) before the drawing action of plate starts, three edge regions of main holding pad 4 and lower mold auxiliary binder Plate 3 is pushed down plate together and makes plate produce the deformation of local;
(2) upper mold auxiliary holding pad 8 and lower mold auxiliary holding pad 3 reach relative static conditions, go up simultaneously Plate shaping is gone out definite shape and coordinates nitrogen cylinder by mould auxiliary holding pad 8 and lower mold auxiliary holding pad 3 Pressure, assists lower mold the plate at holding pad 3 to compress and makes it not flow toward mold center direction again;
(3) upper mold continues to move downward, and plate is via three edge regions of main holding pad 4, in mould Flow in heart direction;
(4), when mould reaches end state, the auxiliary holding pad on main holding pad 4 synchronizes/forces to return Mechanism 2 makes upper mold and up/down mould auxiliary holding pad and main holding pad 4 separated in synchronization, until upper mold auxiliary pressure Flitch 8 is kept completely separate with main holding pad 4.Avoid and make owing to upper and lower auxiliary binder moves asynchronous The situation becoming drawn component deformation occurs.
In sum, the invention provides a kind of lifting stock utilization, ensure accessory size and outward appearance matter Amount, the automobile dash board Lower extension Sheet Metal Forming Technology reducing the scrappage of process part processing in production process and mould Tool.
Its key point is:
(1) after being changed by the docking mode of part, process part processing is semi-enclosed cavity structure, by common punching The drawing work of casting die designs mould and is difficult to improve stock utilization.
(2) the material type of flow of drawing die is made into 3 limit chargings by 4 common limit chargings, normally Mould structure is difficulty with.
(3) share one set of die and reduce pressuring machine (4 press become 3 to realize two kinds of vehicles Platform press) and operator's quantity in the case of manufactured parts, need a whole set of Sheet Metal Forming Technology of part is carried out Big change.
(4) on drawing die, two pieces of auxiliary holding pads are increased so that produce by the mode of 3 limit chargings The purpose of drawn component is achieved, and reduces the scrappage of process part processing.
(5) use auxiliary holding pad to synchronize/force back body to solve due to two pieces of auxiliary holding pad works The action inconsistent part deformation problem caused when making.
The advantage of this programme is:
(1) use new drawing die mould structure and die face technique, reduce process part processing in production process Scrappage, and process part processing shape be unfavorable for stock utilization promote in the case of, it is achieved that promote material Material utilization rate, guarantee accessory size and the purpose of presentation quality.
(2) compress the content of Sheet Metal Forming Technology, require minimizing lathe usage quantity and operator's quantity In the case of, it is achieved one group of mould of the component sharing of two kinds of relevant vehicles produces.
After Sheet Metal Forming Technology change, the material use of certain vehicle front panel Lower extension (left/right) part existing Rate can improve 9%, and the board dimension used also has the space reduced further;Drawing operation part Scrappage is reduced to present less than 0.2% by original 4.5%;Machine for producing bed is subtracted by original 4 Few to 3, producers are reduced to 8 people by 10 original people;The qualification rate of part is by original unstable 80%~87% brought up to entirely reach more than 92%;Achieve two kinds of vehicles and use identical Mould, punch line, personnel produce.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses Being the difference with other embodiments, between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art Seeing, generic principles defined herein can be in the situation without departing from the spirit or scope of the present invention Under, realize in other embodiments.Therefore, the present invention is not intended to be limited to these realities shown in this article Execute example, and be to fit to the widest scope consistent with principles disclosed herein and features of novelty.

Claims (9)

1. an automobile dash board Lower extension Sheet Metal Forming Technology, it is characterised in that include step:
S1, OP10 drawing die, including step:
S11, upper mold move downward, until being installed on the upper mold auxiliary holding pad that upper bolster (10) is internal (8) contact plate;Now by upper mold auxiliary holding pad (8), it is installed on die shoe (5) inside Lower mold auxiliary holding pad (3) the cavity edge region in four limits of plate is pushed down, be installed on lower mold Internal lower mold cylinder (12) orders about lower mold auxiliary holding pad (3) upwards jack-up upper mold auxiliary holding pad (8), subsequently into step S12;
S12, being installed on the upper mold cylinder (11) within upper mold, to order about upper mold auxiliary holding pad (8) downward Motion, upper mold cylinder (11) pressure more than being installed on lower mold cylinder (12) pressure within lower mold, on Mould cylinder (11) will be ordered about the upper mold auxiliary holding pad of upwards jack-up originally by lower mold cylinder (12) (8) pressure, and make the plate of cavity edge areas adjacent deform upon, until the shape of this part plate Becoming consistent with die face, auxiliary holding pad can be only achieved relative static conditions, subsequently into step up and down S13;
S13, upper mold continue to move downward, and plate is by the die profile (9) of upper mold and the main binder of lower mold Other three edge regions pushed down by plate (4), and along with upper mold continues to move downward, plate is to mold center direction Flowing, the cavity edge region in plate is assisted holding pad (8) and lower mold auxiliary binder by upper mold simultaneously Plate (3) compresses and will not flow;After mould reaches end state, enter step S14;
S14, upper mold auxiliary holding pad (8), die profile (9) and lower mold is made to assist holding pad (3), main holding pad (4) separated in synchronization during mould is opened, until upper mold auxiliary holding pad (8) finally it is kept completely separate, subsequently into step S2 with lower mold auxiliary holding pad (3);
S2, OP20 edger: once cut out in most of sideline of part, only retains local the most earnestly While to facilitate process part processing to transmit to subsequent processing, subsequently into step S3;
S3, OP30 piercing and flanging splitting die, including separation, punching, flange and shaping, subsequently into Step S4;
S4, OP40 incised notch mouth die.
Automobile dash board Lower extension Sheet Metal Forming Technology the most according to claim 1, its feature exists In, plate is isosceles trapezoid plate, and its long limit is cavity sides.
Automobile dash board Lower extension Sheet Metal Forming Technology the most according to claim 2, its feature exists In, in step S14, the cylinder (1) being installed on the main holding pad (4) of lower mold will assist binder Plate synchronize/force back body (2) push main holding pad (4) and upper mold auxiliary holding pad (8) it Between, make upper mold auxiliary holding pad (8), die profile (9) and lower mold auxiliary holding pad (3), master Holding pad (4) realizes separated in synchronization, until upper mold auxiliary holding pad (8) is final and lower mold auxiliary binder Plate (3) is kept completely separate.
Automobile dash board Lower extension Sheet Metal Forming Technology the most according to claim 3, its feature exists In, step S14 also includes: final and lower mold auxiliary holding pad (3) in upper mold auxiliary holding pad (8) After being kept completely separate, auxiliary holding pad is synchronized/forces back body (2) by leading by the cylinder (1) of lower mold Retract between holding pad (4) and upper mold auxiliary holding pad (8);If cylinder (1) retracts inefficacy, Pressure retracts hook (7) and auxiliary holding pad can synchronize/force back body (2) retracts original position.
Automobile dash board Lower extension Sheet Metal Forming Technology the most according to claim 4, its feature exists In, the OP40 incised notch mouth die in step S4, put with the OP30 piercing and flanging splitting die in step S3 Use on same press.
6. an automobile dash board Lower extension diel, including upper die and lower die, its feature exists In, there are upper mold auxiliary holding pad (8), die profile (9) and upper mold cylinder upper mold is internally installed (11), the cavity edge region phase in four limits in position and plate of upper mold auxiliary holding pad (8) Right, and upper mold auxiliary holding pad (8) there is the corresponding forming surface in cavity edge region with plate, on Mould cylinder (11) can order about upper mold auxiliary holding pad (8) and move downward;Have lower mold is internally installed Lower mold auxiliary holding pad (3), main holding pad (4) and lower mold cylinder (12), lower mold auxiliary holding pad (3) the cavity edge region in four limits in position and plate is relative, and lower mold auxiliary holding pad (3) Having the corresponding forming surface in cavity edge region with plate, it is auxiliary that lower mold cylinder (12) can order about lower mold Pressing aid flitch (3) moves upward;
Upper mold cylinder (11) pressure is more than lower mold cylinder (12) pressure;
Main holding pad (4) and die profile (9) include and other the three edge regions phase in four limits of plate To part.
Automobile dash board Lower extension diel the most according to claim 6, its feature exists In, upper mold cylinder (11) and lower mold cylinder (12) are nitrogen cylinder.
Automobile dash board Lower extension diel the most according to claim 7, its feature exists In, also include the cylinder (1) that is installed on the main holding pad (4) of lower mold and auxiliary holding pad synchronize/strong Back body processed (2), cylinder (1) can drive with lathe source of the gas, is synchronized/forces by auxiliary holding pad Back body (2) pushes main holding pad (4) and upper mold in time at the suitable time points meeting press runs Between auxiliary holding pad (8).
Automobile dash board Lower extension diel the most according to claim 8, its feature exists In, also include that the pressure being installed on lower mold retracts hook (7), it is possible to will auxiliary when lathe source of the gas lost efficacy Holding pad synchronize/force back body (2) by main holding pad (4) and upper mold assist holding pad (8) it Between retract.
CN201410466001.5A 2014-09-12 2014-09-12 A kind of automobile dash board Lower extension Sheet Metal Forming Technology and mould Active CN104438589B (en)

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CN106975687B (en) * 2017-03-27 2018-06-22 泊头市兴达汽车模具制造有限公司 A kind of inner plate of car door water cuts position drop platform crack resistence creping
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