CN208906304U - A kind of plug of powder metallurgy pressing die - Google Patents
A kind of plug of powder metallurgy pressing die Download PDFInfo
- Publication number
- CN208906304U CN208906304U CN201821545703.2U CN201821545703U CN208906304U CN 208906304 U CN208906304 U CN 208906304U CN 201821545703 U CN201821545703 U CN 201821545703U CN 208906304 U CN208906304 U CN 208906304U
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- CN
- China
- Prior art keywords
- core bar
- chovr body
- transition part
- cavity
- internal thread
- Prior art date
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Abstract
The utility model provides a kind of plug of powder metallurgy pressing die, including core bar and support rod, and cavity is equipped in core bar, and cavity includes the lower transition part of chamber ontology and frustum type, and lower transition part runs through the bottom end of core bar；Lower chovr body is equipped in cavity, lower chovr body includes the lower limit portion with the lower switching part of the structure of chamber ontology cooperation and with the cooperation of lower transition part structure, and vehicle has the first internal thread hole in lower chovr body；Support rod includes interconnecting piece and support portion, and interconnecting piece, which is equipped with, to be threadedly coupled with the matched external screw thread of the first internal thread hole, interconnecting piece with lower chovr body；Core bar is hard alloy material, and support rod and lower chovr body are stainless steel material.Chovr body is arranged in the cavity of core bar in the utility model, internal thread hole is set in chovr body, support rod and core bar are threadedly coupled the threaded connection be converted to chovr body, therefore be not required to the machining internal thread hole in the core bar of hard alloy material, processing efficiency is improved, processing cost is reduced.
Description
Technical field
The utility model belongs to powder metallurgical technology, and in particular to a kind of plug of powder metallurgy pressing die.
Background technique
Powder metallurgy is mainly suitable for automobile industry, equipment manufacture, metal industry, aerospace, war industry, instrument
The spare and accessory parts in the fields such as instruments and meters, hardware tool, electronic appliance produce and research, and product includes bearing, gear, carbide cutter tool
Tool, mold, friction goods etc.；In military enterprise, heavy weaponry such as armor-piercing bullet, torpedo etc., the brake such as aircraft tank
Pair is both needed to produce using PM technique；Automobile metal powder sintered parts are had become in recent years as Chinese Powder Metallurgy Industry maximum
Market, about 50% auto parts and components are powder metallurgy components.
Powder metallurgy die meeting during by metal powder compression moulding pressure very big to mold body generation, one
As in the structure design of mold, high-intensitive requirement cannot be reached, be easy to crack during the work time, damage, cause mold
Service life do not grow, and then improve the cost of production mould.Therefore molding powder metallurgy die plug is participated in, needs to mention
High rigidity and wearability promote die life.Currently used mandrel structure is to use cemented carbide material in moulding section
Core bar, core bar bottom connection conventional rigid material support rod, not only ensure that wearability, but also have preferable processability
Energy.But this is two-part in conjunction with that can be restricted because of die size, as shown in Figure 1, general large-size mandrel is solid using bolt
It is fixed；Small size plug is fixed using welding manner.But when size diameter is in 20-40mm or so, be not suitable for welding, when with bolt
When, bolt head size is bigger to the intensity effect of plug, reduces the integral strength of plug.
Patent CN204413144U discloses a kind of movable plug of powder metallurgy pressing mould, does in transition connection bar part
External threads make internal screw thread on corresponding hard alloy plug, cooperate and complete plug, such mandril strength compares
The problem of height can bear bigger pressure, reduce broken screw.But the screw thread process of hard alloy is difficult point, using electro-discharge machining
Mode, efficiency are very low；By the way of grinding, the machining accuracy of screw thread is to be improved.
Utility model content
High, processing efficiency that the purpose of the utility model is to provide a kind of intensity and machining accuracy height, connection effect stabilization can
The plug of the powder metallurgy pressing die leaned on.
The utility model provides the following technical solution:
A kind of plug of powder metallurgy pressing die, including core bar and support rod, the interior edge of core bar are axially arranged with cavity, cavity
Lower transition part including vertical chamber ontology and from the frustum type to core bar outer inclination, lower transition part run through the bottom end of core bar；It is empty
The inner wall of chamber is not provided with screw thread, and lower chovr body is equipped in cavity, and lower chovr body includes the lower switching with the cooperation of the structure of chamber ontology
There is the first internal thread hole in portion and the lower limit portion cooperated with the lower transition part structure of cavity along axial vehicle in lower chovr body；Support
Bar includes interconnecting piece and support portion, and interconnecting piece is equipped with and the matched external screw thread of the first internal thread hole, interconnecting piece and lower chovr body
It is threadedly coupled, support zone is in the outside of core bar；Core bar is hard alloy material, and support rod and lower chovr body are stainless steel
Matter.Chovr body under being arranged in the cavity of core bar, lower chovr body is interior to be arranged the first internal thread hole, by the screw thread of support rod and core bar
Connection is converted to the threaded connection with lower chovr body, therefore is not required to the machining internal thread hole in the core bar of hard alloy material, mentions
High processing efficiency, reduces processing cost.Lower limit portion can limit lower chovr body and move up in core bar, to make core bar
It remains and is reliably connected with support rod when being under pressure, ensure that the stability of mold pressing process.
Preferably, cavity runs through the upper and lower ends of core bar, and the top of cavity is equipped with to the frustum type of core bar outer inclination
Upper transition part, upper transition part are connected to the top of chamber ontology；The upper chovr body of stainless steel material, upper chovr body packet are equipped in cavity
Include the upper limit portion cooperated with the upper switching part of the structure of chamber ontology cooperation and with the upper transition part structure of cavity；In upper switching part
Equipped with matched second internal thread hole of the external screw thread of interconnecting piece, interconnecting piece is threadedly coupled with upper switching part.Support rod connects simultaneously
Chovr body and lower chovr body are connected, can prevent support rod from moving up and down in core bar, support rod is further enhanced and core bar connects
The fixing connect.
Preferably, upper switching part is connect with lower switching part contact, the tail end of the second internal thread hole and the first internal thread hole
Head end overlap, the interconnecting piece of support rod is smooth, is rapidly threadedly coupled with upper switching part and lower switching part so as to making,
Improve installation effectiveness.
Preferably, the cross section of upper transition part and lower transition part is polygon, distinguishes chovr body and lower chovr body
It will not produce relative rotation when being connect with support rod, accelerate installation speed.
Preferably, upper transition part is identical as the cross-sectional shape of lower transition part, and is non-centrosymmetric structure, thus
Fool proof is carried out to the placement of upper chovr body, lower chovr body in core bar, is not required to take time to differentiate and adjust upper chovr body and lower turn
The placement direction of junctor can make the head of the tail end of the second internal thread hole of switching part and the first internal thread hole of lower switching part
End overlaps, and improves installation effectiveness.
Preferably, the upper surface of support portion abuts the bottom surface of core bar, i.e. the upper surface diameter of support portion is greater than lower transition part
Width extend lower chovr body so that the upper surface of support rod be made to have decomposed a part of lower limit portion to the support force of core bar
Service life.
The beneficial effects of the utility model are:
1, the utility model is arranged chovr body in the cavity of core bar, and internal thread hole is arranged in chovr body, by support rod with
The threaded connection of core bar is converted to the threaded connection of support rod and chovr body, therefore is not required to add in the core bar of hard alloy material
Work internal thread hole, improves processing efficiency and machining accuracy, reduces processing cost.
2, the structure of upper chovr body and lower chovr body designs, and remains core bar when being under pressure with support rod and reliably connects
It connects, ensure that the stability of mold pressing process.
3, the transverse polygonal structure and fool-proof design of upper transition part and lower transition part is convenient for Fast Installation support rod
With up/down chovr body, installation effectiveness height.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of thread connecting mode between this existing core bar and support rod；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the schematic diagram of the section structure of the core bar of the utility model；
Fig. 4 is first internal thread hole of the utility model and the structural schematic diagram of the second internal thread hole；
Fig. 5 is the schematic top plan view of Fig. 2.
In the figure, it is marked as 1. core bars；11. cavity；111. chamber ontology；112. lower transition part；Transition part on 113.；2. support
Bar；21. interconnecting piece；22. support portion；3. lower chovr body；31. lower switching part；32. lower limit portion；33. the first internal thread hole；4.
Upper chovr body；Switching part on 41.；42. upper limit portion；43. the second internal thread hole.
Specific embodiment
As shown in Fig. 2, Fig. 3 and Fig. 5, a kind of plug of powder metallurgy pressing die, including core bar and support rod, in core bar
Along cavity is axially arranged with, cavity includes the lower transition part of vertical chamber ontology and the frustum type to core bar outer inclination, lower transition
The bottom end of core bar is run through in portion；The inner wall of cavity is not provided with screw thread, is equipped with lower chovr body in cavity, lower chovr body includes and chamber ontology
Structure cooperation lower switching part and the lower limit portion that cooperates with the lower transition part structure of cavity, have in lower chovr body along axial vehicle
First internal thread hole；Support rod includes interconnecting piece and support portion, interconnecting piece be equipped with the matched external screw thread of the first internal thread hole,
Interconnecting piece is threadedly coupled with lower chovr body, and support zone is in the outside of core bar；Core bar is hard alloy material, support rod and lower turn
Junctor is stainless steel material.
As shown in Fig. 2, cavity runs through the upper and lower ends of core bar, the top of cavity is equipped with the frustum type to core bar outer inclination
Upper transition part, upper transition part is connected to the top of chamber ontology；The upper chovr body of stainless steel material, upper chovr body are equipped in cavity
Including the upper switching part with the cooperation of the structure of chamber ontology and the upper limit portion with the upper transition part structure cooperation of cavity；Upper switching part
Interior matched second internal thread hole of external screw thread being equipped with interconnecting piece, interconnecting piece are threadedly coupled with upper switching part.
As shown in figure 4, upper switching part is connect with lower switching part contact, the tail end of the second internal thread hole and the first internal screw thread
The head end in hole overlaps.
As shown in figure 5, the cross section of upper transition part and lower transition part is pentagon or hexagon, make chovr body under
Chovr body will not produce relative rotation when connecting respectively with support rod, accelerate installation speed.
It as shown in figure 5, upper transition part is identical as the cross-sectional shape of lower transition part, and is non-centrosymmetric structure,
Specifically, the end face of upper transition part and lower transition part is equipped with a unfilled corner, thus to upper chovr body, lower chovr body in core bar
Placement carry out fool proof, improve installation effectiveness.
As shown in Fig. 2, the upper surface of support portion abuts the bottom surface of core bar, so that the upper surface of support rod be made to have decomposed one
Divide lower limit portion to the support force of core bar, extends the service life of lower chovr body.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, although ginseng
The utility model is described in detail according to previous embodiment, it for those skilled in the art, still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all
Within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in practical
Within novel protection scope.
Claims (6)
1. a kind of plug of powder metallurgy pressing die, which is characterized in that including core bar and support rod, along axial direction in the core bar
Equipped with cavity, the cavity includes the lower transition part of vertical chamber ontology and the frustum type to the core bar outer inclination, described
Lower transition part runs through the bottom end of the core bar；The cavity has smooth inner wall, and lower chovr body is equipped in the cavity, described
Lower chovr body includes the lower limit with the lower switching part of the structure of chamber ontology cooperation and with the lower transition part structure cooperation
Portion, the lower chovr body is interior to have the first internal thread hole along axial vehicle；The support rod includes interconnecting piece and support portion, the connection
Portion be equipped with the matched external screw thread of the first internal thread hole, the interconnecting piece is threadedly coupled with the lower chovr body, described
Support zone is in the outside of the core bar；The core bar is hard alloy material, and the support rod and the lower chovr body are
Stainless steel material.
2. the plug of powder metallurgy pressing die according to claim 1, which is characterized in that the cavity runs through the core
The upper and lower ends of bar, are additionally provided with the upper transition part of the frustum type to the core bar outer inclination at the top of the cavity, it is described on
Transition part is connected to the top of the chamber ontology；The upper chovr body of stainless steel material, the upper chovr body are equipped in the cavity
Including the upper switching part with the cooperation of the structure of the chamber ontology and the upper limit portion with the upper transition part structure cooperation；On described
Matched second internal thread hole of the external screw thread with the interconnecting piece, the interconnecting piece and the upper switching are equipped in switching part
Portion is threadedly coupled.
3. the plug of powder metallurgy pressing die according to claim 2, which is characterized in that the upper switching part with it is described
Lower switching part contact connection, the tail end of second internal thread hole and the head end of first internal thread hole overlap.
4. the plug of powder metallurgy pressing die according to claim 3, which is characterized in that the upper transition part with it is described
The cross section of lower transition part is polygon.
5. the plug of powder metallurgy pressing die according to claim 4, which is characterized in that the upper transition part with it is described
The cross-sectional shape of lower transition part is identical, and is non-centrosymmetric structure.
6. the plug of powder metallurgy pressing die according to claim 1, which is characterized in that the upper surface of the support portion
Abut the bottom surface of the core bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821545703.2U CN208906304U (en) | 2018-09-20 | 2018-09-20 | A kind of plug of powder metallurgy pressing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821545703.2U CN208906304U (en) | 2018-09-20 | 2018-09-20 | A kind of plug of powder metallurgy pressing die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208906304U true CN208906304U (en) | 2019-05-28 |
Family
ID=66613749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821545703.2U Expired - Fee Related CN208906304U (en) | 2018-09-20 | 2018-09-20 | A kind of plug of powder metallurgy pressing die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208906304U (en) |
-
2018
- 2018-09-20 CN CN201821545703.2U patent/CN208906304U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |