CN201511052U - Hole extrusion mould for deep hole forged piece with small diameter - Google Patents

Hole extrusion mould for deep hole forged piece with small diameter Download PDF

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Publication number
CN201511052U
CN201511052U CN2009201432384U CN200920143238U CN201511052U CN 201511052 U CN201511052 U CN 201511052U CN 2009201432384 U CN2009201432384 U CN 2009201432384U CN 200920143238 U CN200920143238 U CN 200920143238U CN 201511052 U CN201511052 U CN 201511052U
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CN
China
Prior art keywords
forging
hole
die
crowded
finish
Prior art date
Application number
CN2009201432384U
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Chinese (zh)
Inventor
孟江峰
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芜湖三联锻造有限公司
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Priority to CN2009201432384U priority Critical patent/CN201511052U/en
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Publication of CN201511052U publication Critical patent/CN201511052U/en

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Abstract

The utility model discloses a hole extrusion mould for a deep hole forged piece with a small diameter. The mould comprises a punching head (5) and a hole extrusion female die (7), wherein the punching head (5) is fixed on an upper die holder (1) through a punching head fixing plate (4), and the hole extrusion female die (7) is fixed on a lower die holder (1). By adopting the technical scheme provided by the utility model, the hole extrusion technology has the following main advantages: the utilization rate of materials is improved; the full filling of pre-forged pieces and finished forged pieces is further facilitated; the use life of the mould is prolonged; and since the height of the forged piece body in the class of the forged piece can increase in the hole extrusion process, by adopting the hole extrusion technology, the depth of the die forging die cavity can be reduced, the pre-forming and the final forming become easier, the efficiency is improved and the manufacturing cost of parts is reduced.

Description

A kind of crowded punch die of Small-deep Hole forging

Technical field

The utility model belongs to the technical field of hot working of metal material, relates to the Plastic Forming process technology of metal material, and more particularly, the utility model relates to a kind of crowded punch die of Small-deep Hole forging.

Background technology

Because the promotion and application of CAD/CAM/CAE technology, the technical merit of forging industry is also in rapid improve, and it is complicated that the forging shape begins to be tending towards, and precision is also more and more higher.But because constantly rising violently of price of steel product in recent years, the manufacturing cost of enterprise is more and more higher, and the pressure that is faced is also increasing, therefore improves the stock utilization of product, and the compression manufacturing cost is the place of competing between the enterprise.

At present, for the forging part of type band path deep holes such as picture flange, wheel hub, because this forging aperture is all little, general aperture is 15~40mm, and through hole is very dark, and the general degree of depth is at 40~100mm, in this case, wanting to use punching in forging molding is to be difficult to realize.Only when product machining, finish through boring processing, shown in a of the Fig. 2 in this Figure of description, its common process be adopt pier thick-blocking-finish-forging-side cut-boring (drilling) finishes.Waste of material (general stock utilization be about 85%) so not only, and increased the cost of machining.Because this forging shape is not very complicated, adopt band overlap forging molding to be easy to make qualified products, therefore improve stock utilization and be only the main path that reduces its cost.

In recent years because the rise of closed-die forging, this technology belongs to a kind of few clean die forging that does not have cutting and makes, after a lot of fairly simple parts of shape adopt this technology, can make its stock utilization greatly improve (can reach more than 90%), but, for the deep hole forging of minor diameter, on Forging Technology, all fail to break through always.

The utility model content

Problem to be solved in the utility model provides a kind of crowded punch die of Small-deep Hole forging, its objective is the crowded hole processing of the deep hole of realizing small-bore on the forging when forging.

To achieve these goals, the technical scheme that the utility model is taked is: the crowded punch die of this Small-deep Hole forging that is provided, it is solid being used for before the finish-forging, form the crowded hole processing of the forging of Small-deep Hole behind the finish-forging, described forging comprises wheel disc portion and the hub portion along the forging axial distribution, described crowded punch die comprises upper bolster, die shoe, guide pillars and bushes, the crowded punch die of described Small-deep Hole forging is established drift, squeeze the hole die, described drift is fixed on the upper bolster by the drift fixed head, and described crowded hole die is fixed on the die shoe.

For making the utility model more perfect, more detailed and concrete technical scheme below also further having proposed, to obtain best practical function, realize goal of the invention better, and improve novelty of the present utility model and creativeness:

The cylindrical of forging hub portion described in the utility model places in the hole of described crowded hole die, in the finish-forging first being processed, the axial length of the hub portion of described forging is less than the degree of depth of described crowded hole concave die cavity, the axial length of the hub portion of described forging.

The die cavity of crowded hole described in the utility model die is provided with die plate insert, and the lower surface of described die plate insert contacts with described die shoe.

Forging described in the utility model is provided with and squeezes the hole bullport when finish-forging, and described crowded hole bullport is a counterbore.

The aperture of crowded hole described in the utility model bullport is provided with a circle projection.

Forging described in the utility model is provided with the tail end counterbore in described finish-forging counterdie baseplane.

In the die of described crowded hole, be provided with push rod.

Described push rod is the moulding push rod, and promptly its end face is corresponding with the end surface shape of forging.

The utility model adopts technique scheme, and the main advantage of its crowded hole technology is: improve stock utilization, more help being full of of pre-, finish-forging spare; Improve die life,, adopt and squeeze hole technology, can reduce the die forging depth of cavity, difficulty pre-, that be shaped is eventually reduced, raise the efficiency, reduce part manufacturing cost because the height of this forging forging body in squeezing the hole process can increase.

Description of drawings

Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are briefly explained:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that common process contrasts schematic diagram with adopting crowded hole technology forging;

Fig. 3 is the schematic diagram of forging tail end structure;

Fig. 4 is the structural representation of finish-forging counterdie;

Fig. 5 is the example schematic of a concrete forging of the present utility model.

Be labeled as among the figure:

1, upper bolster, 2, guide pin bushing, 3, guide pillar, 4, drift fixed head, 5, drift, 6, the material returned pulls, 7, squeeze the hole die, 8, die plate insert, 9, die shoe, 10, screw, 11, nut, 12, stripper leads and lean on, 13, stripper spring, 14, forging, 15, squeeze the hole bullport, 16, tail end counterbore, 17, push rod.

The specific embodiment

Contrast accompanying drawing below, by description to embodiment, to effect and operation principle, the manufacturing process of the mutual alignment between the shape of the specific embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.

The of the present utility model structure expressed as Fig. 1, it is a kind of crowded punch die of Small-deep Hole forging, be used for before the finish-forging for solid, through squeezing the crowded hole processing that forms the forging 14 of Small-deep Hole behind the hole, described forging 14 comprises that along the wheel disc portion and the hub portion of forging 14 axial distribution, described crowded punch die comprises upper bolster 1, die shoe 9, guide pillar 3 and guide pin bushing 2.

By the analysis to wheel hub, flange type part, it generally all is that the tail end diameter is little; The endoporus aperture is less than normal, and the degree of depth is dark partially, and tail end length is long partially; So, adopt traditional punching mode to realize that the production in hole is relatively more difficult; If form blind hole, adopt the mode of punching to produce then at finish-forging, difficulty is all very big on the technology.And the mode of adopt squeezing the hole is carried out technological design, the one, on materials, save more, and the 2nd, can further prolong life-span of finisher.

In order to solve the problem that exists at the described present known technology of this specification background technology part and to overcome its defective, be implemented in the goal of the invention of the crowded hole processing of the deep hole that carries out small-bore on the forging when forging, the technical scheme that the utility model is taked is:

As shown in Figure 1, the crowded punch die of this Small-deep Hole forging that is provided, the crowded punch die of described Small-deep Hole forging is established drift 5, is squeezed hole die 7, and described drift 5 is fixed on the upper bolster 1 by drift fixed head 4, and described crowded hole die 7 is fixed on the die shoe 9.

The operation principle of squeezing the hole is to utilize drift 5 that the metal that the core of the forging 14 of finish-forging holds is clamp-oned forging 14 bodies, and simultaneously, the height of forging 14 itself also constantly increase along with the inflow of metal.In theory, forging 14 core excess metals are to clamp-on forging 14 bodies fully, but squeeze hole die 7 in order to guarantee that forging 14 squeezes can be full of fully behind the holes, make height dimension meet the drawing requirement, common way is to keep that the thick gross weight of 15~30mm is cut after squeezing the hole to be fallen.So just be well positioned to meet size and technological requirement.In advance, the design of finish-forging spare is that the elongation that utilizes crowded hole process forging 14 afterbodys reduces in advance, the length of finish-forging forging afterbody.Shown in the b among Fig. 2, c.

The main advantage of squeezing hole technology is to improve stock utilization, more helps being full of of pre-, finish-forging spare, improves die life.Because this forging is in the process of crowded hole, the height of forging 14 bodies can increase, and adopts and squeezes hole technology, can reduce the die forging depth of cavity, and difficulty pre-, that be shaped is eventually reduced, and raises the efficiency, and reduces part manufacturing cost.

Common process and the contrast figure that adopts crowded hole technology of the utility model and mould are referring to Fig. 2.

Be concrete exemplifying embodiment of the present utility model below, for those skilled in the art's reference and selecting for use when implementing the utility model:

Embodiment one:

The cylindrical of forging 14 hub portions described in the utility model places in the hole of described crowded hole die 7, in the finish-forging first being processed, the axial length of the hub portion of described forging 14 is less than the degree of depth in the hole of described crowded hole die 7, the axial length of the hub portion of described forging 14.

Of the present utility modelly focus on finisher tail end design.

The length of the tail end of forging 14 all has quite high precision behind the crowded hole, the precision of the axiality of endoporus and cylindrical is also very high, therefore to realize effective control of blank tail end length and blank weight, the one, control the temperature when producing, the height of temperature is very big to the influence of the dimensional accuracy of forging; Its less important beat to production is controlled; The 3rd is the length location of realizing the tail end in hole with locate mode on the structural design of squeezing casement.

Can adopt the method for DEFORM simulation to analyze, when squeezing the hole, have only part metals to participate in crowded hole forming, therefore when new product development, can determine to squeeze the elongation of afterbody in the process of hole by the DEFORM simulation,

Embodiment two:

Bottom in the hole of crowded hole described in the utility model die 7 is provided with die plate insert 8, and the lower surface of described die plate insert 8 contacts with described die shoe 9.

Die plate insert 8 mainly is effectively to prevent to squeeze hole bur, can also form desired chamfering on forging 14 simultaneously, and the angle of chamfering as shown in Figure 3 is α.

Embodiment three:

Shown in the b among Fig. 2, forging 14 described in the utility model begins the contact site at described drift 5 finish-forgings, is provided with to squeeze hole bullport 15, and described crowded hole bullport 15 is a counterbore.

In the process of squeezing the hole, an important problem is exactly to squeeze the hole to draw the axiality of spoiling with endoporus and cylindrical.If directly squeeze the hole, axiality can't guarantee, and can the place that begin to enter be drawn in crowded hole and collapse, be that metal is along with the direction of drift 5 application of forces of squeezing the hole is sharply mobile, phenomenon is burst in generation around making drift 15, be difficult to guarantee the dimensional accuracy of forging, thereby a large amount of of metal are flowed around how stoping crowded hole effectively, are the problems that must solve; But from another point of view,, can improve the precision of the size of forging 14 if can effectively replenish the metal that this part runs off.

The utility model is to increase the dark guiding of 4~6mm at finish-forging, promptly squeezes hole bullport 15, guarantees the requirement of axiality.

Embodiment four:

The aperture of crowded hole described in the utility model bullport 15 is provided with a circle projection.

The method that the utility model adopts is the hybrid mode of these two kinds of improved procedures.Change by the finish-forging forging drawing achieves the goal, and the compensation rate that increases by 15 ° avoids crowded hole to draw the phenomenon of collapsing.

Embodiment five:

As Fig. 2, Fig. 3 and shown in Figure 5, forging 14 described in the utility model begins the opposite end face of contact surface at described drift 5 finish-forgings, is provided with tail end counterbore 16.

The purpose that tail end counterbore 16 is set is identical with embodiment two, promptly can form desired chamfering on forging 14, and the angle of chamfering as shown in Figure 3 is α.

Referring to following exemplifying embodiment six, the shape of described tail end counterbore 16 and push rod 17 end shapes are complementary.

Embodiment six:

In under finish-forging described in the utility model, be provided with push rod.

Described push rod is the moulding push rod, and promptly its end face is corresponding with the end surface shape of forging 14.

As shown in Figure 4, counterdie pre-, finish-forging is made the form of moulding push rod, the demoulding of so not only more convenient forging 14, can also make the length of forging 14 afterbodys do suitable adjustment according to the change of the length of push rod 17, so just can suitably adjust, play the effect of dual fail-safe the error that the DEFORM analog result produces.

Forging with a wheel hub shape is an example below, specifically sets forth and squeezes punch die design implementation process.

As shown in Figure 5:

By in the forging drawing (as shown in Figure 5) as can be seen: the forging endoporus is Φ 20X54.5, with the way of routine, adopts punching to be difficult to realize, has only the employing method for processing of holing after forging.Its process route be blanking-heating-pier thick-blocking-finish-forging-side cut-boring, its stock utilization is 83.5%, and the process route that the utility model adopts is: blanking-heating-pier is thick-and blocking-finish-forging-crowded hole, this example is forged for enclosed and is added the method for squeezing the hole, and its stock utilization is 97% (wherein squeezing hole technology economical with materials 4%).

Analyze at crowded hole technology below:

At first, the contrast forging drawing, the part of finding the band deep hole mainly is the afterbody at forging 14, and squeeze the bore deformation district also mainly be around the hole, it is the afterbody of forging 14, so squeeze the time marquis of punch die in design, mainly be to see that the elongation of forging 14 when squeezing the hole determine the design of finish-forging forging drawing so that forging 14 after extend in crowded hole forging 14 tail length just in the scope of forging 14 dimensional requirements.The die cavity part of squeezing hole die 7 is then consistent with the heat forging drawing size.

By the DEFORM simulation result analysis, it is proper that 5.4mm is measured in the crowded hole elongation of determining this example, puts into crowded hole die 7 easily for forging 14 in the process of crowded hole simultaneously, and finish-forging forging 14 afterbodys are radially dwindled 0.3~0.5mm; Simultaneously, the finish-forging afterbody is made 1 ° of withdrawing pattern (final forging afterbody does not have pattern draft), and forging 14 can well be put into the die cavity that squeezes hole die 7 like this, can play good positioning action again, the form pre-simultaneously, that the finish-forging counterdie all is designed to moulding push rod 17 is convenient to the change of mould.

Advance the problem of collapsing of drawing at people place in squeezing the hole process, being easy to generate the overproof and forging 14 of axiality squeezing the hole, the measure that the utility model is taked is: make the spigot surface of the band tapering of dark 5mm and (promptly adopt to squeeze hole bullport 15 by will squeeze the in-position, hole on the finish-forging forging drawing, address shown in the b among Fig. 2 as embodiment three), do simultaneously at easy-to-draw place, plane of collapsing 15 ° of gradients small embossment (four described as implementing, in the aperture of squeezing hole bullport 15, be provided with a circle projection), compensate drawing in squeezing the hole process and collapse.

More than done introduction to squeezing the hole forming principle, special explanation has also been done in the design of finisher, below just crowded punch die itself is done a more detailed introduction.

At first on structure (referring to Fig. 1), this finisher mainly contain following three parts: the crowded hole die 7 of acting, drift 5, die plate insert 8; Guide pillar 3, the guide pin bushing 2 of guiding; The stripper 6 of the material returned, stripper spring 13, stripper guide pillar 12.

Wherein, the acting part is main structure, as can be seen from Figure 1, drift 5 is elongated rod members, need good rigidity and wearability, common way is to adopt the 3Cr2W8V material to be quenched into HRC48~52, and while carbide alloy on drift 5 front ends place easy to wear freezes mould steel or brazing is as 5Cr4W5Mo2V, 3Cr3Mo3W2V; And crowded hole die 7 and die plate insert 8 adopt 3Cr2W8V, W9Cr4V2, W18Cr4V to meet the demands.The length of drift 5 depends primarily on forging 14 and equipment closed height itself, make it can take out forging 14 at equipment easily to top dead center, moves to the bottom dead centre place, and drift 5 just enters 3~8mm within the die plate insert 8.And the designed punching die closed height of this example is 400mm, just can meet the demands on the punch press of 200T.Wherein, die plate insert 8 mainly is effectively to prevent to squeeze hole bur, can also form desired chamfering simultaneously on forging 14.Because it is fragile, so squeezing hole die 7, discord is made of one, so that change.And the gap between drift 5 and the die plate insert 8 is good with monolateral 0.1~0.2mm, and this example is 0.15mm, and so both convenient dress mould can not damaged again.In good time in process of production cools off, and effect can be better like this.

Secondly, material returned part mainly makes forging 14 in equipment up stroke process, and under the keeping out of stripper 6, forging 14 breaks away from drift 5 easily, is convenient to take out, and can not weigh forging 14 wounded again simultaneously.The principle of its targeting part and other mould bases is identical with effect.

At last, the accuracy of manufacture of mould also is very important, and it not only influences its assembling, and also to die life, the quality of product plays critical effect.

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.

Claims (6)

1. the crowded punch die of a Small-deep Hole forging, it is solid being used for before the finish-forging, form the crowded hole processing of the forging (14) of Small-deep Hole behind the finish-forging, described forging (14) comprises along the wheel disc portion and the hub portion of forging (14) axial distribution, described crowded punch die comprises upper bolster (1), die shoe (9), guide pillar (3) and guide pin bushing (2), it is characterized in that: the crowded punch die of described Small-deep Hole forging is established drift (5), squeeze hole die (7), described drift (5) is fixed on the upper bolster (1) by drift fixed head (4), and described crowded hole die (7) is fixed on the die shoe (9).
2. according to the crowded punch die of the described Small-deep Hole forging of claim 1, it is characterized in that: the cylindrical of described forging (14) hub portion places in the hole of described crowded hole die (7), in the finish-forging first being processed, the axial length of the hub portion of described forging (14), less than the degree of depth in the hole of described crowded hole die (7), the axial length of the hub portion of described forging (14).
3. according to the crowded punch die of the described Small-deep Hole forging of claim 2, it is characterized in that: the bottom in the hole of described crowded hole die (7), be provided with die plate insert (8), the lower surface of described die plate insert (8) contacts with described die shoe (9).
4. according to the crowded punch die of the described Small-deep Hole forging of claim 3, it is characterized in that: described forging (14) begins the contact site at described drift (5) finish-forging, is provided with to squeeze hole bullport (15), and described crowded hole bullport (15) is a counterbore.
5. according to the crowded punch die of the described Small-deep Hole forging of claim 4, it is characterized in that: the aperture of described crowded hole bullport (15) is provided with a circle projection.
6. according to the crowded punch die of the described Small-deep Hole forging of claim 3, it is characterized in that: described forging (14) begins the opposite end face of contact surface at described drift (5) finish-forging, is provided with tail end counterbore (16).
CN2009201432384U 2009-03-05 2009-03-05 Hole extrusion mould for deep hole forged piece with small diameter CN201511052U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102371300A (en) * 2011-10-26 2012-03-14 巨力索具股份有限公司 Forming equipment and technology for punching taper hole of black metal forged piece
CN102806294A (en) * 2011-05-30 2012-12-05 四川振强模锻有限公司 Punching trimming mould for three-rib and four-rib valve base
CN103056588A (en) * 2013-01-04 2013-04-24 宿迁市波尔特机械制造有限公司 Tool and method for finish machining of inner hole of fixing sleeve of diesel cooling water pump
CN103707545A (en) * 2013-12-09 2014-04-09 张长印 Hollow activated carbon forming die
CN105171365A (en) * 2015-09-29 2015-12-23 陕西法士特齿轮有限责任公司 Deep cavity thin-wall flange piece composite forging molding method
CN105710149A (en) * 2016-03-30 2016-06-29 江苏威鹰机械有限公司 Deep hole extrusion die
CN106238486A (en) * 2016-08-17 2016-12-21 中国兵器工业第五九研究所 A kind of slender member revolving die backward extrusion carefully brilliant shaping dies and manufacturing process
CN106984755A (en) * 2017-03-27 2017-07-28 湖北三环锻造有限公司 Hub squeezes punching forging mold

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102806294A (en) * 2011-05-30 2012-12-05 四川振强模锻有限公司 Punching trimming mould for three-rib and four-rib valve base
CN102371300A (en) * 2011-10-26 2012-03-14 巨力索具股份有限公司 Forming equipment and technology for punching taper hole of black metal forged piece
CN103056588A (en) * 2013-01-04 2013-04-24 宿迁市波尔特机械制造有限公司 Tool and method for finish machining of inner hole of fixing sleeve of diesel cooling water pump
CN103056588B (en) * 2013-01-04 2015-11-11 宿迁市波尔特机械制造有限公司 Cooling water pump of diesel engine fixed cover finishing of internal diameter frock and method for fine finishing thereof
CN103707545A (en) * 2013-12-09 2014-04-09 张长印 Hollow activated carbon forming die
CN103707545B (en) * 2013-12-09 2016-07-27 张长印 Hollow active carbon forming die
CN105171365A (en) * 2015-09-29 2015-12-23 陕西法士特齿轮有限责任公司 Deep cavity thin-wall flange piece composite forging molding method
CN105710149A (en) * 2016-03-30 2016-06-29 江苏威鹰机械有限公司 Deep hole extrusion die
CN106238486A (en) * 2016-08-17 2016-12-21 中国兵器工业第五九研究所 A kind of slender member revolving die backward extrusion carefully brilliant shaping dies and manufacturing process
CN106984755A (en) * 2017-03-27 2017-07-28 湖北三环锻造有限公司 Hub squeezes punching forging mold

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Granted publication date: 20100623

Termination date: 20130305