CN203221175U

CN203221175U - Guide die

Info

Publication number: CN203221175U
Application number: CN 201320179489
Authority: CN
Inventors: 蔡冰; 季成; 钱伟; 徐磊; 张海峰
Original assignee: YANCHENG LIYAN PRECISION FORGING CO Ltd
Current assignee: YANCHENG LIYAN PRECISION FORGING CO Ltd
Priority date: 2013-04-10
Filing date: 2013-04-10
Publication date: 2013-10-02
Anticipated expiration: 2023-04-10

Abstract

The utility model provides a guide die. The guide die comprises a punch, a punch sleeve sleeved on the root of the punch, a punch guide sleeve sleeved at the tail end of the punch and an elastic component located between the punch sleeve and the punch guide sleeve. The elastic component undergoes elastic deformation in the pressure direction, when contact force is exerted on the tail end of the punch guide sleeve, the tail end of the punch guide sleeve will pressure the elastic component so as to ensure that the elastic component shrinks in an elastic mode, after the contact force of the tail end of the punch guide sleeve is cancelled, the original length of the elastic component recovers, and the larger the elastic shrinking degree of the elastic component is, the larger the size of the punch extending out of the punch guide sleeve will be. According to the guide die, the guide sleeve slides up and down under the action of force through the elastic force of the elastic component, in the forging process, the punch guide sleeve is attached to the punch all the time, die opening guiding is conducted on the punch guide sleeve and a concave die opening; guiding is conducted on an outer punch guide sleeve and an outer concave die guide sleeve, and therefore the precision of a product is improved.

Description

A kind of guiding mould

Technical field

The utility model relates to metal precision forging field, particularly a kind of guiding mould.

Background technology

Mould is the instrument of formed article, this instrument is made of various parts, and different moulds is made of different parts, it mainly the change of the physical state by institute's moulding material realize the processing of shape of product, make shape of product meet mould, can finish the moulding of complicated shape product.

Characteristics such as mould for cold forging has the precision height, and design is convenient, conventional cold forging die can be divided into patrix, guide frame and counterdie three big parts.Because the out-of-shape of some forging, the precision height, common guide frame can not satisfy production requirement, and therefore a kind of guide frame of needs design is finished the guiding between patrix in the forging process (drift), the counterdie (die), and the product of production reaches the precision of expection.

See also shown in Figure 1ly, it is the anti-extruding mold structural representation of existing deep hole, and it comprises drift 12, is positioned at the drift fairlead 11 of drift 12 peripheries, die 15 and die fairlead 13.As shown in Figure 1, because drift 12 is long, it is long that drift 12 stretches out drift fairlead 11, and drift 12 is subjected to the effect bending of the power of forging stock 14 in forging process, and the axiality of product endoporus and profile is overproof when making forging, can not meet the demands.

Therefore, be necessary above-mentioned defective is done further improvement.

Summary of the invention

The purpose of this utility model is to provide a kind of guiding mould with accurate guide effect.

For reaching aforementioned purpose, a kind of guiding mould of the utility model, it comprises: drift, be sheathed on the drift cover of the root of described drift, be sheathed on the drift fairlead of the end of described drift, elastomeric element between described drift cover and described drift fairlead, elastic deformation can take place in this elastomeric element on pressure direction, after the end of wherein said drift fairlead is subjected to contact force, can will exert pressure so that described elastomeric element elastic shrinkage to described elastomeric element, after the contact force of the end of described drift fairlead is cancelled, described elastomeric element recovers original length, the degree of the elastic shrinkage of described elastomeric element is more big, and the size that described drift exposes described drift fairlead is more long.

According to an embodiment of the present utility model, when described elastomeric element kept original length, described drift exposed described drift fairlead end.

According to an embodiment of the present utility model, it also includes: the die that is provided with matrix cavity, in described matrix cavity, be placed with the forging stock that needs forging, the sidewall of described matrix cavity and the described drift fairlead described drift fairlead that contacts to lead, when described drift forged described forging stock, described drift fairlead was subjected to the backward extrusion of forging stock and is subjected to contact force.

According to an embodiment of the present utility model, it also includes: the outer die fairlead that is arranged at described die top, it is provided with the perforation corresponding with described matrix cavity and its size is bigger, be arranged at the peripheral outer ram fairlead of described drift cover, its punching with described outer die fairlead is led and is cooperated.

According to an embodiment of the present utility model, described elastomeric element is the mould padded coaming.

According to an embodiment of the present utility model, described elastomeric element is polyurethane elastomer.

The beneficial effects of the utility model: the utility model adopts a kind of floating guiding mould, utilize the elastic force of elastomeric element that the drift fairlead is slided up and down under the effect of contact force, slowly increase the drift extension elongation in the forging process, increase the guiding distance of drift fairlead, the drift fairlead is pasting drift all the time in forging process, carry out the die orifice guiding with the die mouth, make guiding accuracy improve; Moreover in the forging process, outer ram fairlead and outer die fairlead lead, and the utility model structure has adopted dual guide frame and the accurate guide frame of die orifice to reach the effect of accurate guiding, the precision of raising product.

Description of drawings

Fig. 1 is the anti-extruding mold structural representation of the deep hole of prior art;

Fig. 2 is guiding mould structure schematic diagram of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done further detailed description.

See also shown in Figure 2ly, it is guiding mould structure schematic diagram of the present utility model.As shown in Figure 2, it comprises drift 26, be sheathed on the root of drift 26 drift cover 21, be sheathed on the drift fairlead 24 of the end of drift 26, wherein be provided with elastomeric element 23 between drift cover 21 and the drift fairlead 24.In this embodiment, described elastomeric element 23 is the mould padded coaming, can be polyurethane elastomer.In other embodiments, the padded coaming that this elastomeric element 23 also can be other elasticity height, pliability is good is with not mold damage, durable, easy to use being advisable.

Please continue to consult Fig. 2, it also comprises the die 28 that is provided with matrix cavity, is placed with the forging stock 27 that needs forging in matrix cavity.The sidewall of matrix cavity and the drift fairlead 24 drift fairlead 24 that contacts to lead, when 26 pairs of forging stocks 27 of drift forged, drift fairlead 24 was subjected to the backward extrusion of forging stock 27 and is subjected to contact force.

Please continue to consult Fig. 2, die 28 tops are provided with outer die fairlead 25, and drift overlaps 21 outer periphery and is equipped with outer ram fairlead 22.Outer die fairlead 25 is provided with the perforation corresponding with matrix cavity and its size is bigger, and outer ram fairlead 22 leads with the punching of outer die fairlead 25 and cooperates.

In forging process, elastic deformation can take place in elastomeric element 23 on pressure direction, when drift 26 touches forging stock 27, the end of drift fairlead 24 is positioned at the A position, drift 26 moves downward, forging stock 27 carries out plastic deformation, forging stock 27 moves upward round drift 26, when forging stock 27 touches drift fairlead 24, after the end of drift fairlead 24 is subjected to the contact force of forging stock 27 at this moment, can will exert pressure to elastomeric element 23 so that elastomeric element 23 elastic shrinkage, drift fairlead 24 moves upward, but drift fairlead 24 contacts with drift 26 all the time, and then continues to set upright not part of the force of drift 26, thereby sets upright drift 26.After the contact force of the end of drift fairlead 24 was cancelled, elastomeric element 23 recovered original length, and the degree of the elastic shrinkage of elastomeric element 23 is more big, and the size that drift 26 exposes drift fairlead 24 is more long.And in forging process, drift fairlead 24 carries out the die orifice guiding with die 28, thereby has improved guiding accuracy.

In forging process, outer ram fairlead 22 moves downward along with drift 26 moves downward also, and outer ram fairlead 22 leads mutually with drift fairlead 24 and elastomeric element 23, and also leads with outer die fairlead 25 simultaneously, thereby play the effect of dual guiding, make that guiding is more accurate.

Guiding mould of the present utility model, utilize the elastic force of elastomeric element that the drift fairlead is slided up and down under the effect of power, slowly increase the drift extension elongation in the forging process, increase the guiding distance of drift fairlead, the drift fairlead is pasting drift all the time in forging process, carry out the die orifice guiding with the die mouth, make guiding accuracy improve; Moreover in the forging process, outer ram fairlead and outer die fairlead lead, and the utility model structure has adopted dual guide frame and the accurate guide frame of die orifice to reach the effect of accurate guiding, the precision of raising product.

Above-mentioned explanation has fully disclosed the specific embodiment of the present utility model.It is pointed out that and be familiar with the scope that any change that the person skilled in art does the specific embodiment of the present utility model does not all break away from claims of the present utility model.Correspondingly, the scope of claim of the present utility model also is not limited only to previous embodiment.

Claims

One kind the guiding mould, it is characterized in that: it comprises:

Drift;

Be sheathed on the drift cover of the root of described drift;

Be sheathed on the drift fairlead of the end of described drift;

Elastomeric element between described drift cover and described drift fairlead, elastic deformation can take place in this elastomeric element on pressure direction, after the end of wherein said drift fairlead is subjected to contact force, can will exert pressure so that described elastomeric element elastic shrinkage to described elastomeric element, after the contact force of the end of described drift fairlead is cancelled, described elastomeric element recovers original length, the degree of the elastic shrinkage of described elastomeric element is more big, and the size that described drift exposes described drift fairlead is more long.
2. guiding mould according to claim 1, it is characterized in that: when described elastomeric element kept original length, described drift exposed described drift fairlead end.
3. guiding mould according to claim 1, it is characterized in that: it also includes:

Be provided with the die of matrix cavity, in described matrix cavity, be placed with the forging stock that needs forging, the sidewall of described matrix cavity and the described drift fairlead described drift fairlead that contacts to lead, when described drift forged described forging stock, described drift fairlead was subjected to the backward extrusion of forging stock and is subjected to contact force.
4. guiding mould according to claim 1, it is characterized in that: it also includes:

Be arranged at the outer die fairlead on described die top, it is provided with the perforation corresponding with described matrix cavity and its size is bigger;

Be arranged at the peripheral outer ram fairlead of described drift cover, its punching with described outer die fairlead is led and is cooperated.
5. guiding mould according to claim 1, it is characterized in that: described elastomeric element is the mould padded coaming.
6. guiding mould according to claim 1, it is characterized in that: described elastomeric element is polyurethane elastomer.