CN114289717B - Gear preparation mould with annular groove - Google Patents
Gear preparation mould with annular groove Download PDFInfo
- Publication number
- CN114289717B CN114289717B CN202111384059.1A CN202111384059A CN114289717B CN 114289717 B CN114289717 B CN 114289717B CN 202111384059 A CN202111384059 A CN 202111384059A CN 114289717 B CN114289717 B CN 114289717B
- Authority
- CN
- China
- Prior art keywords
- mould
- die
- annular groove
- gear
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000005245 sintering Methods 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000004663 powder metallurgy Methods 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 230000001788 irregular Effects 0.000 description 6
- 230000008093 supporting effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention discloses a gear preparation mould with an annular groove, which comprises a first mould and a second mould, wherein an annular groove mould is arranged between the first mould and the second mould, a gasket is movably arranged between the first mould and the second mould, and the gasket is arranged outside the annular groove mould and is tightly attached to the annular groove mould. The invention can effectively solve the problem of inward inclination of the sawtooth part close to the annular groove in the preparation process of the gear with the annular groove, and has the advantages of simple method, convenient operation and lower cost.
Description
Technical Field
The invention relates to the technical field of powder metallurgy, in particular to a gear preparation die with an annular groove.
Background
At present, most gears are cast and formed, and the cast and formed process has the advantages of time saving, simplicity and economy for regular gears, but is not practical for irregular gears, because the irregular gears are difficult to realize demoulding after casting, and the forced demoulding is easy to cause damage to irregular parts. Thus, the currently popular powder metallurgy forming technique is advantageous for irregular gears.
Powder metallurgy forming is one of the basic processes in powder metallurgy production, with the aim of pressing loose (metal, ceramic, or other material) powders in a mold to produce semi-finished products of predetermined geometry, size, solidity and strength, and then demoulding to obtain semi-finished blanks. The semi-finished product is changed into a finished product at least through a subsequent sintering process, but during the sintering process, the sawtooth part of the gear, which is close to the annular groove, is easy to tilt or incline inwards, and particularly, the phenomenon that the sawtooth part is deviated is obvious for an irregular gear with the annular groove, such as a reel of a fishing rod, and the like, the tilting phenomenon is well treated, and the tilting phenomenon can be regulated through operations such as knocking, forging, extrusion and the like, but the problems of tilting and the like are difficult to solve, so that the defects are required to be avoided in the preparation process of the irregular gear with the annular groove. Therefore, there is a need for further improvements in the manufacturing mold structure of gears.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the gear preparation die with the annular groove, which can effectively solve the problem of inward inclination of the sawtooth part close to the annular groove in the gear preparation process with the annular groove, and has the advantages of simple method, convenient operation and lower cost.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the gear preparation mould with the annular groove comprises a first mould and a second mould, wherein an annular groove mould is arranged between the first mould and the second mould, a gasket is movably arranged between the first mould and the second mould, and the gasket is arranged outside the position of the annular groove mould and is tightly attached to the annular groove mould.
The invention provides a further technical scheme that: the first die is provided with a die groove with a sawtooth part, the second die is provided with a die groove with a non-sawtooth part or a die groove with a sawtooth part, the annular groove die is a hollow pipe for connecting the sawtooth part and the non-sawtooth part, the gasket is sleeved in the hollow pipe, and the outer diameter of the gasket is the same as the inner diameter of the hollow pipe.
Further, the annular groove die and the die grooves of the non-sawtooth parts are detachably connected.
Further, the annular groove die is formed by splicing two semicircular pipes, and the splicing mode of the two semicircular pipes is connected in a buckling mode of a protrusion and a groove.
Further, the gasket is formed by a plurality of ceramic plates which are connected end to form an annular structure.
Further, the gasket is prepared by adopting a powder metallurgy forming process.
Further, the washers are removed from the gear blank after the sintering process of the gear is completed.
Furthermore, the first die, the second die and the annular groove die are all made of nonmetal materials.
Furthermore, the first die and the second die are used only when the green body of the gear is prepared, after the green body is prepared, the green body needs to be removed from the green body before sintering, and the green body can be sintered.
Compared with the prior art, the invention has the advantages that: according to the invention, the gasket is arranged at the position of the annular groove die, the side with the saw teeth is not easy to incline towards the annular groove in the preparation process of the gear through the supporting function of the gasket, the saw teeth are guaranteed to have good flatness near one side face of the annular groove, the gasket does not need to be removed after the preparation is completed, the sintering process is carried out along with the gear blank, the gasket is removed after the sintering is completed, the problem of inward inclination of the saw teeth near the annular groove in the preparation process of the gear with the annular groove can be effectively solved, and the method is simple, convenient to operate and low in cost.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a structural view of a gear in embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the structure of a gasket in embodiment 1 of the present invention;
Fig. 4 is a schematic diagram showing the structure of the gasket in cooperation with the annular groove mold in embodiment 1 of the present invention.
Legend description:
1. a first die; 2. a second die; 3. an annular groove mold; 4. a gasket; 5. a gear.
Detailed Description
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown, for the purpose of illustrating the invention, but the scope of the invention is not limited to the specific embodiments shown.
Referring to fig. 1-4, a gear preparation mold with an annular groove comprises a first mold 1 and a second mold 2, wherein an annular groove mold 3 is arranged between the first mold 1 and the second mold 2, a gasket 4 is movably arranged between the first mold 1 and the second mold 2, the gasket 4 is arranged outside the position of the annular groove mold 3 and is tightly attached to the annular groove mold 3, and the gasket 4 mainly has a supporting effect on the gear 5 in the preparation process, and particularly has a supporting effect on a sawtooth part of the gear 5.
In this embodiment, the die groove with the sawtooth portion is arranged on the die one 1, the die groove with the non-sawtooth portion is arranged on the die two 2, the annular groove die 3 is a hollow pipe for connecting the sawtooth portion with the non-sawtooth portion, the gasket 4 is sleeved in the hollow pipe, the outer diameter of the gasket 4 is the same as the inner diameter of the hollow pipe, after the gear is demolded, the annular groove die 3 is removed, the gasket 4 does not need to be removed, and at the moment, the gasket 4 is in close contact with the annular groove of the gear, so that a powerful supporting effect can be effectively generated on the sawtooth portion of the gear 5, the gasket 4 can be sintered along with a blank body of the gear 5, the gasket 4 is removed after sintering is finished, the problem of inward inclination of the sawtooth portion close to the annular groove in the preparation process of the gear 5 with the annular groove can be effectively solved, and the method is simple, convenient operation and low cost. If the hollow tube is thin, the gasket 4 can be sleeved outside the hollow tube, and the gap between the gasket 4 and the annular groove of the gear 5 is small after the hollow tube is removed because the hollow tube is thin, and the supporting effect of the gasket is not affected by the gap, so that the gap can be ignored.
In this embodiment, the annular groove mold 3 is detachably connected with the mold grooves of the non-sawtooth portion, such as bonding, buckling, and the like, so as to facilitate the preparation of the mold and the removal process of the mold. The annular groove die 3 is formed by splicing two semicircular pipes, so that the later dismantling process is convenient to carry out quickly and in a labor-saving manner, the placing process of the gasket 4 is also convenient to carry out smoothly, the splicing modes of the two are connected in a buckling mode of the bulge and the groove, the reliability of connection is high, and the connection is convenient.
In this embodiment, the gasket 4 is formed by a plurality of ceramic plates connected end to form an annular structure, the gasket 4 is formed by at least two ceramic plates, or three, four or more ceramic plates, the number of the ceramic plates is related to the radius of the gear, the larger the radius of the gear is, the more the ceramic plates can be arranged, which is beneficial to the final demolding of the gasket 4. The gasket 4 is prepared by a powder metallurgy forming process, and the gasket is generally formed by sintering and then used. The gasket 4 is removed from the blank of the gear 5 after the sintering process of the gear 5 is completed, and can also perform a powerful supporting function on the saw tooth portion on one side or both sides of the annular groove during the sintering process of the gear 5.
In this embodiment, the first mold 1, the second mold 2 and the annular groove mold 3 are all made of nonmetallic materials, and in the demolding process, if demolding is not easy, the mold can be easily broken to perform demolding. The first die 1 and the second die 2 are only used when the green body of the gear 5 is prepared, and after the green body is prepared, the green body needs to be removed from the green body before sintering, so that the green body can be sintered.
Claims (6)
1. The gear preparation mould with the annular groove comprises a first mould and a second mould, wherein an annular groove mould is arranged between the first mould and the second mould;
The first die is provided with a die groove of a sawtooth part, the second die is provided with a die groove of a non-sawtooth part or a die groove of a sawtooth part, the annular groove die is a hollow pipe for connecting the die groove of the sawtooth part of the first die with the die groove of the non-sawtooth part or the die groove of the sawtooth part of the second die, the gasket is sleeved in the hollow pipe, and the outer diameter of the gasket is the same as the inner diameter of the hollow pipe;
the gasket is removed from the gear blank after the sintering process of the gear is completed;
The first die and the second die are used only when the green body of the gear is prepared, after the green body is prepared, the green body needs to be removed from the green body before sintering the green body, and the green body can be sintered.
2. The gear manufacturing mold with annular groove according to claim 1, wherein the annular groove mold and the non-serration part mold groove are detachably connected.
3. The gear manufacturing mold with the annular groove according to claim 2, wherein the annular groove mold is formed by splicing two semicircular pipes, and the two semicircular pipes are spliced in a buckling mode of a protrusion and a groove.
4. A gear manufacturing mould with annular grooves according to any one of claims 1-3, wherein the gasket is composed of a plurality of ceramic plates joined end to form an annular structure.
5. The mold for manufacturing gears with annular grooves according to claim 4, wherein said gasket is manufactured by a powder metallurgy molding process.
6. A gear manufacturing mould with annular grooves according to any one of claims 1-3, wherein the first mould, the second mould and the annular groove mould are all manufactured from non-metallic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111384059.1A CN114289717B (en) | 2021-11-19 | 2021-11-19 | Gear preparation mould with annular groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111384059.1A CN114289717B (en) | 2021-11-19 | 2021-11-19 | Gear preparation mould with annular groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114289717A CN114289717A (en) | 2022-04-08 |
| CN114289717B true CN114289717B (en) | 2024-05-10 |
Family
ID=80965178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111384059.1A Active CN114289717B (en) | 2021-11-19 | 2021-11-19 | Gear preparation mould with annular groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114289717B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60204808A (en) * | 1984-03-29 | 1985-10-16 | Nissan Motor Co Ltd | Method and device for producing helical gear |
| JPS6314804A (en) * | 1986-07-04 | 1988-01-22 | Toyota Motor Corp | Production of pulse gear |
| JPH01230703A (en) * | 1987-11-30 | 1989-09-14 | Sumitomo Metal Mining Co Ltd | Method and apparatus for supplying raw material powder into metallic mold for press-forming annular parts |
| JPH04136107A (en) * | 1990-09-25 | 1992-05-11 | Sumitomo Electric Ind Ltd | Compacting apparatus for sintering helical gear |
| JPH0985385A (en) * | 1995-09-26 | 1997-03-31 | Musashi Seimitsu Ind Co Ltd | Production of bevel gear and sizing die thereof |
| DE19919493A1 (en) * | 1999-04-29 | 2000-11-09 | Bt Magnet Tech Gmbh | Method for arranging an insert part in a sintered part |
| JP2008030099A (en) * | 2006-07-31 | 2008-02-14 | Honda Motor Co Ltd | Mold for powder compaction of double gear |
| CN203509027U (en) * | 2013-09-30 | 2014-04-02 | 中国兵器工业第五二研究所 | Loose sintering porous die for copper |
| DE102013221011A1 (en) * | 2013-10-16 | 2015-04-16 | Bayerische Motoren Werke Aktiengesellschaft | A method for producing a ceramic molding, use of secondary oxide ceramic and injection molding apparatus for producing a ceramic molding |
| FR3037831A1 (en) * | 2015-06-26 | 2016-12-30 | Snecma | FABRICATION OF A TURBINE RING CURVED SECTOR BY MOLDING AND FRITTAGE |
| CN207372282U (en) * | 2017-09-08 | 2018-05-18 | 太原市精达盛机械设备有限公司 | One kind carries reinforcing rib powder metallurgy die |
| CN110039058A (en) * | 2019-05-21 | 2019-07-23 | 济南新艺粉末冶金有限公司 | A kind of powder metallurgy supporting element and its application |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012003439A1 (en) * | 2010-07-02 | 2012-01-05 | Mikro Systems, Inc. | Self supporting core-in-a-core for casting |
-
2021
- 2021-11-19 CN CN202111384059.1A patent/CN114289717B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60204808A (en) * | 1984-03-29 | 1985-10-16 | Nissan Motor Co Ltd | Method and device for producing helical gear |
| JPS6314804A (en) * | 1986-07-04 | 1988-01-22 | Toyota Motor Corp | Production of pulse gear |
| JPH01230703A (en) * | 1987-11-30 | 1989-09-14 | Sumitomo Metal Mining Co Ltd | Method and apparatus for supplying raw material powder into metallic mold for press-forming annular parts |
| JPH04136107A (en) * | 1990-09-25 | 1992-05-11 | Sumitomo Electric Ind Ltd | Compacting apparatus for sintering helical gear |
| JPH0985385A (en) * | 1995-09-26 | 1997-03-31 | Musashi Seimitsu Ind Co Ltd | Production of bevel gear and sizing die thereof |
| DE19919493A1 (en) * | 1999-04-29 | 2000-11-09 | Bt Magnet Tech Gmbh | Method for arranging an insert part in a sintered part |
| JP2008030099A (en) * | 2006-07-31 | 2008-02-14 | Honda Motor Co Ltd | Mold for powder compaction of double gear |
| CN203509027U (en) * | 2013-09-30 | 2014-04-02 | 中国兵器工业第五二研究所 | Loose sintering porous die for copper |
| DE102013221011A1 (en) * | 2013-10-16 | 2015-04-16 | Bayerische Motoren Werke Aktiengesellschaft | A method for producing a ceramic molding, use of secondary oxide ceramic and injection molding apparatus for producing a ceramic molding |
| FR3037831A1 (en) * | 2015-06-26 | 2016-12-30 | Snecma | FABRICATION OF A TURBINE RING CURVED SECTOR BY MOLDING AND FRITTAGE |
| CN207372282U (en) * | 2017-09-08 | 2018-05-18 | 太原市精达盛机械设备有限公司 | One kind carries reinforcing rib powder metallurgy die |
| CN110039058A (en) * | 2019-05-21 | 2019-07-23 | 济南新艺粉末冶金有限公司 | A kind of powder metallurgy supporting element and its application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114289717A (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108580622B (en) | Design method of in-mold radial extrusion forming process of I-shaped longitudinal rib ring piece | |
| CN110695111B (en) | Radial-reverse combined extrusion forming die for thin-walled cylindrical part with outer boss | |
| CN207983642U (en) | A kind of two-way compacting tool set of easily demoulding tubular blank | |
| CN107671283B (en) | Powder metallurgy forming equipment for motor shell | |
| CN102172656B (en) | Resonance rod cold heading manufacturing method | |
| CN203448592U (en) | Equipment for manufacturing insulated container cylinder rolled threads | |
| JP2009256723A (en) | Molding die of complicated form sintered machine parts | |
| CN114289717B (en) | Gear preparation mould with annular groove | |
| CN103480840B (en) | Cylindrical component powder metallurgy forming mold | |
| CN215144694U (en) | Pressing die for cylindrical pressed compact | |
| CN102922633B (en) | Prototyping silastic mould and manufacture method thereof | |
| CN211515985U (en) | Spliced weight-reducing mold core | |
| CN211542522U (en) | Core mould for processing heat radiation element | |
| CN201073659Y (en) | Aluminum alloy hot extrusion die for multiple hollow structure motor casing | |
| CN114273661B (en) | Preparation method and application of irregular gear with annular groove | |
| CN209753941U (en) | inner core mold with contraction function | |
| CN209520256U (en) | A kind of sintered-carbide die conducive to demoulding | |
| CN219786563U (en) | Shaping die of powder metallurgy driven sprocket | |
| CN205702277U (en) | Thin-wall part progressive upsetting shaping dies | |
| JP2002045998A (en) | Press forming machine | |
| CN209756210U (en) | Semi-automatic production mold | |
| JP2006212665A (en) | Apparatus and method for molding helical gear | |
| CN214920481U (en) | Thin-wall pipe blank forming die | |
| CN215471858U (en) | Wet-type isostatic pressing die for zirconia ceramic product | |
| JP4394257B2 (en) | Method for producing powder compact |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |