CN203316719U - Compression forming mould for powder metallurgical products - Google Patents
Compression forming mould for powder metallurgical products Download PDFInfo
- Publication number
- CN203316719U CN203316719U CN2013203992620U CN201320399262U CN203316719U CN 203316719 U CN203316719 U CN 203316719U CN 2013203992620 U CN2013203992620 U CN 2013203992620U CN 201320399262 U CN201320399262 U CN 201320399262U CN 203316719 U CN203316719 U CN 203316719U
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- Prior art keywords
- core rod
- former
- compression
- forming
- female mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The utility model discloses a compression forming mould for powder metallurgical products. The compression forming mould for the powder metallurgical products comprises a female mould, and is characterized in that the female mould is of a split structure and comprises a female mould wrapping cover (4) and a female mould core composed of at least two female mould core sections (3), the outer lateral surface of the female mould core is in conical-surface fit with the inner lateral surface of the female mould wrapping cover (4), and the female mould core is a big-end-up cone in the compression direction. The compression forming mould for the powder metallurgical products is convenient to mount and dismount, small in demoulding pressure, particularly suitable for compression forming and demoulding of the powder metallurgical products whose compression performance and forming performance are poor, long in service life, low in manufacturing cost and small in demoulding pressure, and lowers the requirements for a compressor and the manufacturing cost of the compressor. In addition, the use amount of forming agent and lubricant is largely reduced, and production cost is reduced. Meanwhile, the surface quality of the products is good, the yield is largely improved, and the forming problem of the powder metallurgical products whose compression and forming performance is poor and whose shape is complex is resolved.
Description
Technical field
The utility model relates to field of powder metallurgy, and a kind of sintered metal product press-moulding die specifically particularly relates to the poor sintered metal product press-moulding die of a kind of compressibility of dusty material and processability.
Background technology
In field of powder metallurgy, forming method and mould are very the key links.It is that draw ratio (length-to-diameter) very large, complex-shaped (inside and outside have step), density requirements very high (relative density reach 90 ﹪ more than), the very poor sintered metal products such as dusty material (as magnetic, stainless steel powder etc.) of processability are adopted to conventional moulding process and mould is to be difficult to or even can't moulding for In-particular, and its main cause has:
1, the complexity of shape of product makes mould structure and moulding process move also very complicated;
2, the density of product is high, and to the requirement raising of mold materials, mold materials need adopt expensive steel-bonded carbide or carbide alloy usually;
3, the draw ratio of product is higher, the corresponding lateral area of product also can be very large, because the existence of lateral pressure, and make the ejection pressure also can be very large, even ejection pressure can surpass pressing pressure, and ejection pressure is larger, the defect that generation of institute's shaped article is ftractureed, pulled will be more, thereby affect the percentage of A-class goods;
4, when compressibility and the processability of dusty material itself very poor, as soft magnet powder, amorphous soft magnet powder, spherical soft magnet powder, stainless steel powders etc. such as Fe-Si, Fe-Si-Al, Fe-Si-Cr, because the shape of powder itself is very regular, hardness is very high again, therefore, during compacting, require pressure to want enough large, and mold materials is very good, meanwhile, because pressing pressure and ejection pressure are proportional relations, because of the press formability of powder itself poor, the intensity of pressed compact is also poor, so, if (its former is overall structure to adopt conventional forming method and mould, during the demoulding, by low punch, workpiece is ejected from former, or former is left behind to the undershoot direction, make workpiece break away from the former mouth), excessive ejection pressure is that frictional force between former wall and workpiece outer wall and the hot high temperature of height that produces because of friction conversely can be by, and the workpiece of the forming " " breaks in demoulding link, pull open and split, pull out oxide skin, workpiece is scrapped.
Summary of the invention
The purpose of this utility model is to provide a kind of sintered metal product press-moulding die, and its mould fills mould, form removal is convenient, and ejection pressure is little, particularly is applicable to the compressing and demoulding of the poor sintered metal product of dusty material compressibility and processability.
The utility model is to adopt following technical scheme to realize its goal of the invention, a kind of sintered metal product press-moulding die, it comprises former, described former is Split type structure, it comprises former jacket, the former core rod be comprised of at least 2 former core rod lobes, the medial surface of the lateral surface of described former core rod and former jacket is cone match, and described former core rod is up big and down small cone along pressing direction.
For easy to process, size, the shape of each former core rod lobe of the utility model are consistent.
Have transverse holes or protruding curved surface arranged outward or partial groove is arranged outward or the goods of step are arranged outward for compressing, the medial surface of former core rod lobe of the present utility model is provided with core bar or groove or projection.
The cone angle of former core rod described in the utility model is 14 °～30 °, is preferably 16 °～20 °.
Owing to adopting technique scheme, the utility model has been realized goal of the invention preferably, and its forming die structure is simple, and the life-span is long, and cost is low, and ejection pressure is little, has also reduced requirement and cost to press; And because the consumption of forming agent and ravine lubrication prescription reduces greatly, also reduced production cost, simultaneously, product surface quality is intact, the percentage of A-class goods greatly improves, and has solved that compressing property is very poor, shape very complicated Fe-Si, Fe-Si-Al, the moulding difficult problem of Fe-Si-Cr series sintered metal product again.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model former;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the structural representation of the utility model embodiment 1;
Fig. 4 is the structural representation of the utility model embodiment 2;
Fig. 5 is the structural representation of the utility model embodiment 3;
Fig. 6 is the structural representation of the utility model embodiment 4;
Fig. 7 is the structural representation of the utility model embodiment 5;
Fig. 8 is the structural representation of the utility model embodiment 6;
Fig. 9 is the structural representation of the utility model embodiment 7;
Figure 10 is the structural representation of the utility model embodiment 8.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1:
As seen from Figure 1, Figure 2, a kind of sintered metal product press-moulding die, it comprises former, described former is Split type structure, it comprises former jacket 4, the former core rod be comprised of at least 2 former core rod lobes 3, the medial surface of the lateral surface of described former core rod and former jacket 4 is cone match, and described former core rod is up big and down small cone along pressing direction.
For easy to process, size, the shape of each former core rod lobe 3 of the utility model are consistent.
The cone angle of former core rod described in the utility model is 14 °～30 °, is preferably 16 °～20 °.
The present embodiment former core rod lobe 3 is 3, and its size, shape are consistent, and the former core rod formed is a frustum, and its cone angle is 20 °.
As shown in Figure 3, the compressing release method of a kind of sintered metal product, it comprises the following steps:
(1) fill mould: former is made to Split type structure, and it comprises former jacket 4 and former core rod, and the medial surface of the lateral surface of described former core rod and former jacket 4 is cone match, and described former core rod is up big and down small cone along pressing direction; Former jacket 4 is arranged on bed die floating plate 8 by pressing plate 5, and described former core rod is comprised of at least 2 former core rod lobes 3, and the surface of internal cavity of former core rod is shaped as the side view of goods;
For easy to process, size, the shape of each former core rod lobe 3 of the utility model are consistent.
The cone angle of former core rod described in the utility model is 14 °～30 °, is preferably 16 °～20 °.
The present embodiment former core rod lobe 3 is 3, and its size, shape are consistent, and the former core rod formed is a frustum, and its cone angle is 20 °, porose cylindrical part centered by the workpiece 6 of processing.
(2) compressing: by the powder former core rod inner chamber of packing into, the upper punch 2 on press moves downward the compression powder, reaches setting height to upper punch 2 compression workpiece 6;
(2) compressing: by the powder former core rod inner chamber of packing into, the upper punch 2 on press moves downward the compression powder, drives the rocker piece 1 be arranged on upper punch 2 simultaneously and moves downward, and reaches setting height to upper punch 2 compression workpiece 6;
(3) the demoulding: after release, upper punch 2 backhaul playback, bed die floating plate 8 is moved down or undershoot 7 upwards ejects workpiece 6(the present embodiment for bed die floating plate 8 is moved down), former core rod and former jacket 4 unclamp, workpiece 6 discharges all stress immediately, treat that workpiece 6 breaks away from former core rod mouth fully, demoulding program completes; Take workpiece 6 away, bed die floating plate 8 rises or undershoot 7 resets downwards (the present embodiment is that bed die floating plate 8 rises), the former core rod is resetted, then carry out the compacting of next workpiece.
The utility model when application, powder to be packed into after former core rod inner chamber, upper punch 2 moves downward the compression powder, is compressed to and to a certain degree drives afterwards rocker piece 1 compressing former core rod lobe 3 and former jacket 4 close contacts.Like this, the one, prevent that cylindrical mistake circle and workpiece 6 outer round surface of workpiece 6 from producing obvious mould joint close (overlap); The 2nd, force former jacket 4 to float and make workpiece 6 reach even density by the mould bases frock downwards.The demoulding after upper punch 2 compression workpiece 6 reach setting height, upper punch 2 backhaul playback after release, bed die floating plate 8 is moved down, now, because former jacket 4 is cone match with the former core rod, power that need only be very little just can make the former core rod break away from the former mouth, and after workpiece 6 is exposed to the former mouth fully, demoulding program completes; Take workpiece 6 away, bed die floating plate 8 rises and drives the former core rod and resets, then carries out the compacting of next workpiece.
Forming die structure of the present utility model is simple, and the life-span is long, and cost is low, has also reduced requirement and cost to press; During application, because ejection pressure is little, the consumption of forming agent and ravine lubrication prescription reduces greatly, reduced production cost, and product surface quality is intact, the percentage of A-class goods greatly improves, and has solved that compressing property is very poor, shape very complicated Fe-Si, Fe-Si-Al, the moulding difficult problem of Fe-Si-Cr series sintered metal product again.
Embodiment 2:
As shown in Figure 4, the present embodiment former core rod lobe 3 is 2, and its size, shape are consistent, and the former core rod formed is a frustum, and its cone angle is 18 °, the column part that the workpiece 6 of processing is plum blossom-shaped for cross section.Remaining with embodiment 1.
Embodiment 3:
As shown in Figure 5, the present embodiment former core rod lobe 3 is 4, and its size, shape are consistent, and the former core rod formed is a frustum, and its cone angle is 20 °, and the workpiece 6 of processing is square column part for cross section.Remaining with embodiment 1.
Embodiment 4:
As shown in Figure 6, the present embodiment former core rod lobe 3 is 4, and its size, shape are consistent, and the former core rod formed is a frustum, its cone angle is 20 °, the column part of step in poriferous zone centered by the workpiece 6 of processing, stripping means adopts undershoot 7 upwards to eject workpiece 6, after the demoulding completes, take workpiece 6 away, undershoot 7 resets downwards, and the former core rod is resetted, then carries out the compacting of next workpiece.Remaining with embodiment 1.
Embodiment 5:
Have transverse holes or protruding curved surface arranged outward or partial groove is arranged outward or the goods of step are arranged outward for compressing, the medial surface of former core rod lobe 3 of the present utility model is provided with core bar or groove or projection.
As shown in Figure 7, the present embodiment former core rod lobe 3 is 4, its size, shape are consistent, the former core rod formed is a frustum, and its cone angle is 20 °, and the medial surface of former core rod lobe 3 is provided with projection, the height of the projection vertex of a cone that goes directly, the column part of the inside and outside step of poriferous zone centered by the workpiece 6 of processing, when compressing, the rocker piece 1 on upper punch 2 is laid down.Remaining with embodiment 1.
Embodiment 6:
As shown in Figure 8, the present embodiment former core rod lobe 3 is 4, its size, shape are consistent, the former core rod formed is a frustum, its cone angle is 20 °, and the medial surface part of former core rod lobe 3 is provided with projection, porose centered by the workpiece 6 of processing, in step, outer fluted column part are arranged, when compressing, the rocker piece 1 on upper punch 2 is laid down.Remaining with embodiment 1.
Embodiment 7:
As shown in Figure 9, the present embodiment former core rod lobe 3 is 4, its size, shape are consistent, the former core rod formed is a frustum, its cone angle is 20 °, and the medial surface part of former core rod lobe 3 is provided with the taper projection, the column part of porose tyre back taper centered by the workpiece 6 of processing, when compressing, the rocker piece 1 on upper punch 2 is laid down.Remaining with embodiment 1.
Embodiment 8:
As shown in Figure 10, the present embodiment former core rod lobe 3 is 4, its size, shape are consistent, the former core rod formed is a frustum, and its cone angle is 20 °, and the medial surface part of former core rod lobe 3 is provided with groove, described groove is curved surface, the column part of porose tyre projection curved surface centered by the workpiece 6 of processing, when compressing, the rocker piece 1 on upper punch 2 is laid down.Remaining with embodiment 1.
From above embodiment, when being processed with the workpiece of outer step, when compressing, the rocker piece 1 on upper punch 2 must be laid down.The utility model also can be provided with core bar on former core rod lobe 3, with the compressing goods with transverse holes or inclined hole.
Claims (5)
1. a sintered metal product press-moulding die, it comprises former, it is characterized in that described former is Split type structure, it comprises former jacket (4), the former core rod be comprised of at least 2 former core rod lobes (3), the medial surface of the lateral surface of described former core rod and former jacket (4) is cone match, and described former core rod is up big and down small cone along pressing direction.
2. sintered metal product press-moulding die according to claim 1, is characterized in that size, the shape of each former core rod lobe (3) is consistent.
3. sintered metal product press-moulding die according to claim 1, is characterized in that the medial surface of former core rod lobe (3) is provided with core bar or groove or projection.
4. according to claim 1 or 2 or 3 described sintered metal product press-moulding dies, the cone angle that it is characterized in that described former core rod is 14 °～30 °.
5. sintered metal product press-moulding die according to claim 4, is characterized in that the cone angle of described former core rod is preferably 16 °～20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203992620U CN203316719U (en) | 2013-07-05 | 2013-07-05 | Compression forming mould for powder metallurgical products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203992620U CN203316719U (en) | 2013-07-05 | 2013-07-05 | Compression forming mould for powder metallurgical products |
Publications (1)
| Publication Number | Publication Date |
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| CN203316719U true CN203316719U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203992620U Expired - Fee Related CN203316719U (en) | 2013-07-05 | 2013-07-05 | Compression forming mould for powder metallurgical products |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331444A (en) * | 2013-07-05 | 2013-10-02 | 益阳市新纪元粉末冶金有限公司 | Compression forming mold for sintered metal product, application thereof and forming mold release method |
| CN106424192A (en) * | 2016-12-09 | 2017-02-22 | 宁海县鑫鸿汽车部件有限公司 | Cold extrusion mold for ball stud |
| CN107671283A (en) * | 2017-11-21 | 2018-02-09 | 安徽同华新能源动力股份有限公司 | The powder metallurgy forming equipment of electric machine casing |
-
2013
- 2013-07-05 CN CN2013203992620U patent/CN203316719U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331444A (en) * | 2013-07-05 | 2013-10-02 | 益阳市新纪元粉末冶金有限公司 | Compression forming mold for sintered metal product, application thereof and forming mold release method |
| CN103331444B (en) * | 2013-07-05 | 2015-09-30 | 益阳市新纪元粉末冶金有限公司 | Sintered metal product press-moulding die and application and shaping and demoulding method |
| CN106424192A (en) * | 2016-12-09 | 2017-02-22 | 宁海县鑫鸿汽车部件有限公司 | Cold extrusion mold for ball stud |
| CN107671283A (en) * | 2017-11-21 | 2018-02-09 | 安徽同华新能源动力股份有限公司 | The powder metallurgy forming equipment of electric machine casing |
| CN107671283B (en) * | 2017-11-21 | 2024-05-17 | 安徽同华新能源动力股份有限公司 | Powder metallurgy forming equipment for motor shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20200705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |