CN205020544U

CN205020544U - Concatenation formula die

Info

Publication number: CN205020544U
Application number: CN201520678624.9U
Authority: CN
Inventors: 许峰
Original assignee: Zhejiang Mingrui Metal Product Co Ltd
Current assignee: Zhejiang Mingrui Metal Product Co Ltd
Priority date: 2015-09-02
Filing date: 2015-09-02
Publication date: 2016-02-10
Anticipated expiration: 2025-09-02

Abstract

The utility model relates to a concatenation formula die, inserting outside including, insert in, and insert in the center, insert to fix and set up in interior inserting in the center, interior insert fixed set up insert outside in, it is circular to insert the cross -section outward, and the central part has the rectangle fretwork, interior insert and the cross -section is the rectangle, and the central part has the rectangle fretwork, the center insert with the size looks adaptation of second rectangle fretwork, the cross -section is the rectangle, and the central part has the rectangle fretwork, inserting outward and made by SKD61 to insert in, and being made by SKD61 inserts and is made by SKH51 in the center, inserting outward, insert in, and to insert fits be interference fit at the center. The utility model provides a bed die easily ftractures, and short -lived problem in the life -span of having improved the bed die, has increased the working efficiency.

Description

A kind of spliced die

Technical field

The utility model relates to mechanical forging field, particularly relates to a kind of spliced die.

Background technology

Extruder, as a kind of forging equipment, is widely used in the middle of casting technique of being everlasting, and relies on extruder to apply external force to material, makes material produce plastic deformation, thus obtains the extrusion of required form and size.In extrusion process, the stressing conditions of cold-extruded punch is different with the difference of pressing method; forward extruding male mould mainly bears the effect of compression; and Back Extrusion Punches or Compound Extrusion punch; when extruding impulse stroke; subject very large action of compressive stress; then bear less tension when backhaul, this draws, compression is alternation generation.No matter be that forward extrusion or backward extrusion are subject to the effect of the bending stress caused by eccentric load toward contact.This shows, Cold Extrusion Punch is drawn, press and the comprehensive function of bending stress, its stress is more complicated.Cold Extruding Die inwall due to subject larger in the effect of pressure, thus make die circumferentially act on larger tension, as shown in a, mould 5 ＇ can at four top corner parts crackings when stress is concentrated.The condition of work of harshness like this, makes want much shorter than other mould the service life of cold extrusion die.Therefore, in order to extend the mold use life-span, reducing product cost, increasing economic efficiency, solve mould stress when extruding and can concentrate and cause the problem of crack of die, concerning extremely important cold extruding technique.

Utility model content

The purpose of this utility model is for the deficiencies in the prior art part, overcomes the problem because mould local stress causes mould premature wear to break, provides a kind of bed die, disperseed step by step by the stress concentrated on bed die, to reach the effect of protection mould.

Technology correspondence of the present utility model adjustment is as follows:

A kind of spliced die, is characterized in that: comprise outer insert, interior insert and center insert; Described center insert is fixedly installed in interior insert; Described interior insert is fixedly installed in outer insert;

Outer insert cross section is rounded, and central part has one for installing the first rectangle hollow out of interior insert;

The size of interior insert and described first rectangle hollow out is suitable, rectangular in cross-section, and central part has a second rectangle hollow out for mounting center insert;

The size of center insert and described second rectangle hollow out is suitable, rectangular in cross-section, and central part has one for installing the 3rd rectangle hollow out of processing work.

Outer insert is made up of SKD61, and hardness is in the scope of HRC43 ~ 46.

Interior insert is made up of SKD61, and hardness is in the scope of HRC50 ~ 53.

Center insert is made up of SKH51, and hardness is in the scope of HRC61 ~ 63.

Be connected with the first drift angle extended line of gained line and the intersection point of bed die centre symmetry line of second drift angle of center insert is basic point, and this basic point is d to the air line distance of the first drift angle, and the first drift angle is d to the air line distance of the second drift angle ₁; Second drift angle is d to the air line distance of the 3rd drift angle ₂; 3rd drift angle is d to the air line distance of the 4th drift angle ₃.

D ₁the ratio of/d in 1.5 ~ 2.5 scopes, d ₂the ratio of/d in 2 ~ 2.5 scopes, d ₃/ d ₂ratio in 2 ~ 3 scopes.

D ₁the ratio of/d is 1.8; Described d ₂the ratio of/d is 2.2; Described d ₃/ d ₂ratio be 2.5.

Outer insert, interior insert and center insert fit system are interference fit.

The beneficial effect of the present embodiment: the utility model provides a kind of bed die, overcome the problem because local stress makes die wear break, the problem that solution mould stress concentrates on bight and ftractures, counterdie has three parts compositions, the hardness of composition material is successively decreased from inside to outside step by step, die life is improved by this mechanism, stress is born by outer insert, interior insert together with the insert of center, on average discharges, after stress dispersion, mould strength improves, and improves die life, improves working efficiency.

Accompanying drawing explanation

In order to the technical scheme of clearer explanation the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing described below is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1-1 is the schematic diagram of the extruder of the automobile exhaust pipe pressure device of a kind of spliced die of application the utility model.

Fig. 1-2 is the schematic diagram of a kind of spliced die embodiment one of the utility model.

Fig. 2 is the schematic diagram of the outer insert 5a of bed die in embodiment one.

Fig. 3 is the schematic diagram of the interior insert 5b of bed die in embodiment one.

Fig. 4 is the schematic diagram of the center insert 5c of bed die in embodiment one.

Fig. 5 is the crack of die schematic diagram in DESCRIPTION OF THE PRIOR ART.

Label declaration:

1. upper bolster, 2. die shoe, 3. mold, 4. extrude base plate, 5. bed die, the outer insert of 5a., 5a1 first rectangle hollow out, insert in 5b., 5b1. first rectangle hollow out, 5c. center insert, 5c1. first rectangle hollow out, 5 ＇. prior art mould, 6. bearing platform, 7. fixed head, 8. thimble rod, a. the first drift angle, b. second drift angle, c. the 3rd drift angle, d. the 4th drift angle, L. centre symmetry line, A. basic point.

Detailed description of the invention

Below in conjunction with accompanying drawing, the technical scheme in the utility model embodiment is illustrated clearly and completely.

Embodiment one

The schematic diagram of the interior insert 5b that the schematic diagram that the schematic diagram that Fig. 1-1 is the extruder of the automobile exhaust pipe pressure device of application the utility model a kind of spliced die, Fig. 1-2 are a kind of spliced die embodiment one of the utility model, Fig. 2 are the schematic diagram of the outer insert 5a of bed die in embodiment one, Fig. 3 is bed die in embodiment one, Fig. 4 are the schematic diagram of the center insert 5c of bed die in embodiment one.As shown in Fig. 1-1, Fig. 1-2, Fig. 2, Fig. 3 and Fig. 4, the present embodiment one provides a kind of stamping machine of automobile exhaust pipe pressure device, comprises upper bolster 1, die shoe 2, mold 3, extruding base plate 4, bed die 5, bearing platform 6, fixed head 7 and thimble rod 8.Described upper bolster 1 is connected with mold 3, described extruding base plate 4 is fixed on bearing platform 6, described fixed head 7 is fixed on bearing platform 6 and extruding base plate 4 both sides, described die shoe 2 is positioned at bearing platform 6 times, described bearing platform 6 has a guide rod hole, described thimble rod 8 is positioned in the middle of die shoe 2, and die shoe 2 has a guide rod hole, and bed die 5 is fixedly installed on extruding base plate 4; Described bed die 5, comprises outer insert 5a, interior insert 5b and center insert 5c; Described center insert 5c is fixedly installed in interior insert 5b; Described interior insert 5b is fixedly installed in outer insert 5a; Described outer insert 5a cross section is rounded, and central part has one for installing the first rectangle hollow out 5a1 of interior insert 5b.The size of described interior insert 5b and described first rectangle hollow out 5a1 is suitable, rectangular in cross-section, and central part has a second rectangle hollow out 5b1 for mounting center insert 5c.The size of described center insert 5c and described second rectangle hollow out 5b1 is suitable, rectangular in cross-section, central part has one for installing the 3rd rectangle hollow out 5c1 of lower processing work, and described outer insert 5a, interior insert 5b and center insert 5c fit system are interference fit; Outer insert 5a is made up of SKD61, and hardness is in the scope of HRC43 ~ 46; Described interior insert 5b is made up of SKD61, and hardness is in the scope of HRC50 ~ 53; Described center insert 5c is made up of SKH51, and hardness is in the scope of HRC61 ~ 63.

Be connected with the first drift angle a extended line of gained line and the intersection point of bed die 5 centre symmetry line L of the second drift angle b of center insert 5c is basic point A, and the air line distance of this basic point A to the first drift angle a is d, and the air line distance of the first drift angle a to the second drift angle b is d ₁, described d ₁the ratio of/d is in 1.5 ~ 2.5 scopes, and this ratio is 1.8 in the present embodiment; The air line distance of the second drift angle b to the 3rd drift angle c is d ₂, d ₂the ratio of/d is in 2 ~ 2.5 scopes, and this ratio is 2.2 in the present embodiment; The air line distance of the 3rd drift angle c to the 4th drift angle d is d ₃, d ₃/ d ₂ratio in 2 ~ 3 scopes, this ratio is 2.5 in the present embodiment.

Shown by utility model people great many of experiments and actual use, above-described ratio (d ₁/ d, d ₂/ d and d ₃/ d ₂) there is direct impact to mold use number of times and life-span, can effectively improve mold use number of times and life-span by adjusting and controlling this ratio.Certainly, when the use material of parts adjusts to some extent, its access times and life-span also can adjust accordingly and change.

Concrete detail is as shown in table 1:

Table 1 project ratio detail list corresponding to mould access times

The above; be only utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.

Claims

1. a spliced die, is characterized in that: comprise outer insert (5a), interior insert (5b) and center insert (5c); Described center insert (5c) is fixedly installed in interior insert (5b); Described interior insert (5b) is fixedly installed in outer insert (5a);

Described outer insert (5a) cross section is rounded, and central part has one for installing the first rectangle hollow out (5a1) of interior insert (5b);

Described interior insert (5b) is suitable with the size of described first rectangle hollow out (5a1), rectangular in cross-section, and central part has a second rectangle hollow out (5b1) for mounting center insert (5c);

Described center insert (5c) is suitable with the size of described second rectangle hollow out (5b1), and rectangular in cross-section, central part has one for installing the 3rd rectangle hollow out (5c1) of processing work.

2. a kind of spliced die as claimed in claim 1, is characterized in that: described outer insert (5a) is made up of SKD61, and hardness is in the scope of HRC43 ~ 46.

3. a kind of spliced die as claimed in claim 1, is characterized in that: described interior insert (5b) is made up of SKD61, and hardness is in the scope of HRC50 ~ 53.

4. a kind of spliced die as claimed in claim 1, is characterized in that: described center insert (5c) is made up of SKH51, and hardness is in the scope of HRC61 ~ 63.

5. a kind of spliced die as claimed in claim 1, it is characterized in that: be connected with the first drift angle (a) extended line of gained line and the intersection point of bed die (5) centre symmetry line (L) of second drift angle (b) at described center insert (5c) is basic point (A), this basic point (A) is d to the air line distance of the first drift angle (a), and the first drift angle (a) is d to the air line distance of the second drift angle (b) ₁; Second drift angle (b) is d to the air line distance of the 3rd drift angle (c) ₂; 3rd drift angle (c) is d to the air line distance of the 4th drift angle (d) ₃.

6. a kind of spliced die as claimed in claim 5, is characterized in that: described d ₁the ratio of/d in 1.5 ~ 2.5 scopes, d ₂the ratio of/d in 2 ~ 2.5 scopes, d ₃/ d ₂ratio in 2 ~ 3 scopes.

7. a kind of spliced die as claimed in claim 6, is characterized in that: described d ₁the ratio of/d is 1.8; Described d ₂the ratio of/d is 2.2; Described d ₃/ d ₂ratio be 2.5.

8. the spliced die of one as described in as arbitrary in claim 1 to 7, is characterized in that: described outer insert (5a), interior insert (5b) and center insert (5c) fit system are interference fit.