CN104625074A - Novel powder metallurgy split middle die with step - Google Patents
Novel powder metallurgy split middle die with step Download PDFInfo
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- CN104625074A CN104625074A CN201510047751.3A CN201510047751A CN104625074A CN 104625074 A CN104625074 A CN 104625074A CN 201510047751 A CN201510047751 A CN 201510047751A CN 104625074 A CN104625074 A CN 104625074A
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- central module
- groove
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- lower mold
- powder metallurgy
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Abstract
The invention discloses a novel powder metallurgy split middle die with a step. The middle die is included and is of a split structure. The middle die comprises an upper die piece and a lower die piece. The upper surface and the lower surface of the upper die piece are provided with a containing cavity and the step. A through groove is formed in the containing cavity. The upper surface of the lower die piece is of a step structure. A clamping groove is formed in the middle of the step structure. The step of the lower die piece and the containing cavity of the upper die piece are connected together in a clamping mode in a coaxial-gap mode. A micro-shoulder center die piece is connected into the through groove of the upper die piece. A non-shoulder center die piece is connected into the step clamping groove of the lower die piece in a clamping mode. A plurality of tiny oil grooves are formed in the plane contact parts of the tiny-shoulder center die piece and the non-shoulder center die piece for decompression. According to the technical scheme, the stress concentration at the middle die step can be prevented effectively, crack production can be avoided, shaping pressure can be improved, the service life of the die is obviously prolonged, die piece replacing is easy, and cost is lowered.
Description
Technical field
The invention belongs to shaping powder metallurgy product field, be specifically related to mould in a kind of novel powder metallurgy split with the level.
Background technology
In existing power metallurgical shaping, mould is generally straight tube structure, but for having the shaping of multiple stage rank sintered metal product, needs special shaping special plane, is limited by current shaping mechanism technology for making and cost, is generally on mould structure, to carry out partial solution certainly.In current monoblock type step, mould concentrates produced problem, be exactly step place stress concentrate, mould easily collapses damage, in addition during shaping due to the existence of hydraulic oil, shaping pressure can not be very large.
When middle mould is overall structure, along with the increase of Production Life, during central mould part wears, middle mould needs integral replacing, and the life-span is lower.
Summary of the invention
The present invention takes mould design in split, and in elimination, the stress at die station rank place is concentrated, and lay down shaping oil part oil pressure, when preventing shaping pressure excessive, step damages; Mould junction is clear angle, protection product edge can not whole go out fillet; In addition when mould part weares and teares, can change for wearing part.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
Mould in a kind of novel powder metallurgy split with the level, comprise middle mould, described middle mould is Split type structure and comprises upper modules and lower mold, described upper modules upper and lower surface is respectively equipped with cavity volume and step, groove is provided with in this cavity volume, described lower mold upper surface is ledge structure, draw-in groove is provided with in the middle part of this ledge structure, the step of lower mold and the cavity volume of upper modules coordinate with concentric gap and are connected together, micro-shoulder central module is connected with in the groove of upper modules, be connected with without shoulder central module in the step draw-in groove of lower mold, described micro-shoulder central module and without shoulder central module planar contact be arranged with multiple small oil groove in order to pressure release.
Further, described micro-shoulder central module takes on central module junction with nothing is cutting edge of a knife or a sword limit.
Further, described micro-shoulder central module and be arranged with two small oil grooves without shoulder central module planar contact, the card access surface of upper modules and lower mold is provided with gap from inside to outside simultaneously, ensures that small oil groove is inside and outside and is communicated with.
Further, described small oil groove avoids micro-shoulder central module and the shaping significant surface without shoulder central module plane contact part.
Further, the cavity volume of described upper modules and groove are ground by inner circle, and roughness is within Ra0.1, and the step draw-in groove of described lower mold is ground by inner circle, and roughness is within Ra0.1.
Further, described upper modules and lower mold are equipped with screwed hole, for dismounting and replacing.
The invention has the beneficial effects as follows:
1, adopt mould in shaping of the present invention, in can effectively preventing, the stress at die station rank place is concentrated, the generation of Crack prevention, can improve the pressure of shaping and significantly improve the mold use life-span.
2, can the more mold exchange part of easily wearing and tearing very easily, improve the mold use life-span, reduce cost.
Accompanying drawing explanation
Fig. 1 is structure side sectional view of the present invention;
Fig. 2 is for being structure top view (locally) of the present invention.
Number in the figure illustrates: 1, lower mold, 2, without shoulder central module, 3, micro-shoulder central module, 4, upper modules.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Shown in seeing figures.1.and.2, mould in a kind of novel powder metallurgy split with the level, comprise middle mould, described middle mould is Split type structure and comprises upper modules 4 and lower mold 1, in the present embodiment, upper modules 4 and lower mold 1 all adopt 45# steel hot jacket, described upper modules 4 upper and lower surface is respectively equipped with cavity volume and step, groove is provided with in this cavity volume, described lower mold 1 upper surface is ledge structure, draw-in groove is provided with in the middle part of this ledge structure, the step of lower mold 1 and the cavity volume of upper modules 4 coordinate with Φ 80H/h5 concentric gap and are connected together, micro-shoulder central module 3 is connected with in the groove of upper modules 4, be connected with without shoulder central module 2 in the step draw-in groove of lower mold 1, micro-shoulder central module 3 and without shoulder central module 2 be carbide alloy core rod, be the transition of cutting edge of a knife or a sword limit bottom micro-shoulder central module 3, avoid fillet, micro-shoulder central module 3 and without shoulder central module 2 between keep 0.005mm perpendicularity and axiality, ensure quality of fit, the tolerance fit between each mating surface and roughness size has been marked in the present embodiment Fig. 1, micro-shoulder central module 3 and without shoulder central module 2 planar contact be arranged with multiple small oil groove in order to pressure release.
It is cutting edge of a knife or a sword limit that described micro-shoulder central module 3 takes on central module 2 junction with nothing.
Described micro-shoulder central module 3 and be arranged with two small oil grooves without shoulder central module 2 planar contact, the card access surface of upper modules 4 and lower mold 1 is provided with 0.5mm gap from inside to outside simultaneously, ensures that small oil groove is inside and outside and is communicated with.
Described small oil groove avoids micro-shoulder central module 3 and the shaping significant surface without shoulder central module 2 plane contact part.
Cavity volume and the groove of described upper modules 4 are ground by inner circle, and roughness is within Ra0.1, and the step draw-in groove of described lower mold 1 is ground by inner circle, and roughness is within Ra0.1.
Described upper modules 4 and lower mold 1 are equipped with the screwed hole of two M6, for dismounting and replacing.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. mould in a novel powder metallurgy split with the level, comprise middle mould, it is characterized in that, described middle mould is Split type structure and comprises upper modules (4) and lower mold (1), described upper modules (4) upper and lower surface is respectively equipped with cavity volume and step, groove is provided with in this cavity volume, described lower mold (1) upper surface is ledge structure, draw-in groove is provided with in the middle part of this ledge structure, the step of lower mold (1) and the cavity volume of upper modules (4) coordinate with concentric gap and are connected together, micro-shoulder central module (3) is connected with in the groove of upper modules (4), be connected with without shoulder central module (2) in the step draw-in groove of lower mold (1), described micro-shoulder central module (3) and without shoulder central module (2) planar contact be arranged with multiple small oil groove in order to pressure release.
2. mould in novel powder metallurgy split with the level according to claim 1, is characterized in that, it is cutting edge of a knife or a sword limit that described micro-shoulder central module (3) takes on central module (2) junction with nothing.
3. mould in novel powder metallurgy split with the level according to claim 1, it is characterized in that, described micro-shoulder central module (3) and without shoulder central module (2) planar contact be arranged with two small oil grooves, the card access surface of upper modules (4) and lower mold (1) is provided with gap from inside to outside simultaneously, ensures that small oil groove is inside and outside and is communicated with.
4. mould in novel powder metallurgy split with the level according to claim 3, is characterized in that, described small oil groove avoids micro-shoulder central module (3) and the shaping significant surface without shoulder central module (2) plane contact part.
5. mould in novel powder metallurgy split with the level according to claim 1, it is characterized in that, cavity volume and the groove of described upper modules (4) are ground by inner circle, roughness is within Ra0.1, the step draw-in groove of described lower mold (1) is ground by inner circle, and roughness is within Ra0.1.
6. mould in novel powder metallurgy split with the level according to claim 1, it is characterized in that, described upper modules (4) and lower mold (1) are equipped with screwed hole, for dismounting and replacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047751.3A CN104625074B (en) | 2015-01-30 | 2015-01-30 | A kind of new powder metallurgy split middle mold with the level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047751.3A CN104625074B (en) | 2015-01-30 | 2015-01-30 | A kind of new powder metallurgy split middle mold with the level |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104625074A true CN104625074A (en) | 2015-05-20 |
| CN104625074B CN104625074B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510047751.3A Active CN104625074B (en) | 2015-01-30 | 2015-01-30 | A kind of new powder metallurgy split middle mold with the level |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008068583A (en) * | 2006-09-15 | 2008-03-27 | Toyo Tire & Rubber Co Ltd | Mold for molding vibration damper and manufacturing method |
| CN103143712A (en) * | 2013-03-08 | 2013-06-12 | 严培义 | Female die floating device of a shaping machine for powder sintering parts |
| CN104107897A (en) * | 2013-04-16 | 2014-10-22 | 北京时代锐智科技有限公司 | Squeeze casting die and casting method for straight toothed spur gears |
| CN204470605U (en) * | 2015-01-30 | 2015-07-15 | 苏州莱特复合材料有限公司 | Mould in a kind of novel powder metallurgy split with the level |
-
2015
- 2015-01-30 CN CN201510047751.3A patent/CN104625074B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008068583A (en) * | 2006-09-15 | 2008-03-27 | Toyo Tire & Rubber Co Ltd | Mold for molding vibration damper and manufacturing method |
| CN103143712A (en) * | 2013-03-08 | 2013-06-12 | 严培义 | Female die floating device of a shaping machine for powder sintering parts |
| CN104107897A (en) * | 2013-04-16 | 2014-10-22 | 北京时代锐智科技有限公司 | Squeeze casting die and casting method for straight toothed spur gears |
| CN204470605U (en) * | 2015-01-30 | 2015-07-15 | 苏州莱特复合材料有限公司 | Mould in a kind of novel powder metallurgy split with the level |
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| Publication number | Publication date |
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| CN104625074B (en) | 2017-04-05 |
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