CN203541519U

CN203541519U - High matching accuracy sectional die

Info

Publication number: CN203541519U
Application number: CN201320477413.XU
Authority: CN
Inventors: 杨明雄
Original assignee: BIAOQI MAGNETOELECTRICITY PRODUCTS (FOGANG) Co Ltd
Current assignee: BIAOQI MAGNETOELECTRICITY PRODUCTS (FOGANG) Co Ltd
Priority date: 2013-08-06
Filing date: 2013-08-06
Publication date: 2014-04-16
Anticipated expiration: 2023-08-06

Abstract

The utility model discloses a high matching accuracy sectional die. The high matching accuracy sectional die comprises a cavity, an upper die and a lower die; the cavity which is a sectional cavity is formed by two sections namely a cavity upper section and a cavity lower section; the cavity upper section is matched with the upper die; the cavity lower section is matched with the lower die. The high matching accuracy sectional die has the advantages of changing an integral type cavity structure, enabling the cavity upper section and the cavity lower section to be machined through high accuracy linear cutting technology, accordingly guaranteeing the matching accuracy of the cavity upper section and the upper die and improving the product forming quality.

Description

A kind of high quality of fit sectional die

Technical field:

The utility model is applicable to powder metallurgy dry pressing molding field, particularly a kind of high quality of fit sectional die.

Background technology:

While forming the green article of stairstepping in prior art, fixedly die cavity and the upper and lower mould of offset position are suppressed to realize in general employing.The die cavity of this fixedly offset position, is integral type structure, because die cavity inner chamber can only complete by common process technique, makes die cavity epimere and patrix quality of fit poor.Because quality of fit is not high, the product periphery edge of production easily produces burr, is only applicable on product that appearance requirement is not high.

Utility model content:

The purpose of this utility model provides a kind of new high quality of fit sectional die with regard to being the weak point existing for prior art, it is simple in structure, die cavity epimere and patrix quality of fit are high, can reduce the generation of burr after formed product, meet the requirement of client's high-end product.

For achieving the above object, high quality of fit sectional die of the present utility model includes die cavity, upper die and lower die, and described die cavity is combined type die cavity, by two sections of die cavity epimere and die cavity hypomeres, formed, wherein, die cavity epimere coordinates with patrix, and die cavity hypomere coordinates with counterdie.

As technique scheme preferably, described die cavity epimere and the cut-off rule of die cavity hypomere are positioned at the offset depth location on die cavity.

As technique scheme preferably, the described die cavity epimere degree of depth=blank height * blank density/powder apparent density; Die cavity epimere width=product width * (1.15 ~ 1.17)+0.02mm.

As technique scheme preferably, described patrix width=product width * (1.15 ~ 1.17)+0.02mm.

As technique scheme preferably, the internal diameter of described die cavity epimere is greater than the internal diameter of die cavity hypomere.

The beneficial effects of the utility model are: owing to having changed the version of integral type die cavity, make die cavity epimere and die cavity hypomere can adopt high-precision wire cutting technique to process, thereby guarantee the quality of fit of die cavity epimere and patrix, improve forming quality of products.

Accompanying drawing explanation:

Below in conjunction with accompanying drawing, the utility model is described further:

Fig. 1 is decomposition texture schematic diagram of the present utility model;

Fig. 2 is one of use view of the present utility model;

Fig. 3 is two of use view of the present utility model;

Fig. 4 is three of use view of the present utility model.

The specific embodiment:

The following stated is only preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.

As shown in Figure 1: high quality of fit sectional die of the present utility model includes die cavity 10, patrix 20, counterdie 30, die cavity is combined type die cavity, by 12 two sections of die cavity epimere 11 and die cavity hypomeres, formed, split position between two sections is the offset depth location on die cavity, die cavity epimere 11 degree of depth=blank height * blank density/powder apparent density, die cavity epimere 11 width=product width * (1.15 ~ 1.17)+0.02mm, patrix 20 width=product width * (1.15 ~ 1.17)+0.02mm.For preventing having dislocation after die

cavity epimere

11 and 12 combinations of die cavity hypomere, the internal diameter of die cavity epimere 11 is greater than the internal diameter of die cavity hypomere 12.

Use the formed product process after the high quality of fit combined type of the utility model grinding tool to be:

The first step, die assembly: first load mould 30 and die cavity 10, finally load onto mould 20.And guarantee that upper and lower mould and die cavity 10 is movable unobstructed.After die cavity 10 is fixing, in the stroke of filling, suppressing, ejecting, remain constant.

Second step, fills: as shown in Figure 2, patrix 20 promotes, and counterdie 30 declines, and fills compacting powder 100, and packing volume is set according to blank weight and powder density.The position that counterdie 30 declines is set according to the blank height of product.

The 3rd step, compacting: as shown in Figure 3, patrix 20 declines and pushes, counterdie 30 rises and pushes powder moulded blanks 101; The stroke that the stroke that patrix 20 declines rises than counterdie 30 is large.

The 4th step, ejects: as shown in Figure 4, after patrix 20 promotes, counterdie 30 then promotes and ejects blank 101, and counterdie 30 ejection heights are parallel with cavity surface.Make blank 101 deviate from die cavity 10.

Claims

1. one kind high quality of fit sectional die, include die cavity (10), patrix (20), counterdie (30), it is characterized in that: described die cavity (10) is combined type die cavity, by (12) two sections of die cavity epimere (11) and die cavity hypomeres, formed, wherein, die cavity epimere (11) coordinates with patrix (20), and die cavity hypomere (12) coordinates with counterdie (30).

2. high quality of fit sectional die according to claim 1, is characterized in that: described die cavity epimere (11) is positioned at the offset depth location on die cavity (10) with the cut-off rule of die cavity hypomere (12).

3. high quality of fit sectional die according to claim 2, is characterized in that: described die cavity epimere (11) degree of depth=blank height * blank density/powder apparent density; Die cavity epimere (11) width=product width * (1.15 ~ 1.17)+0.02mm.

4. high quality of fit sectional die according to claim 1, is characterized in that: described patrix (20) width=product width * (1.15 ~ 1.17)+0.02mm.

5. according to the high quality of fit sectional die described in any one in claim 1 to 4, it is characterized in that: the internal diameter of described die cavity epimere (11) is greater than the internal diameter of die cavity hypomere (12).