JPH05295405A - Production of molding - Google Patents
Production of moldingInfo
- Publication number
- JPH05295405A JPH05295405A JP9786392A JP9786392A JPH05295405A JP H05295405 A JPH05295405 A JP H05295405A JP 9786392 A JP9786392 A JP 9786392A JP 9786392 A JP9786392 A JP 9786392A JP H05295405 A JPH05295405 A JP H05295405A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- die
- molded body
- mold
- vibration
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000000465 moulding Methods 0.000 title abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000010953 base metal Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims 2
- 230000005284 excitation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 238000007796 conventional method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
- B30B11/022—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is subjected to vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は金型プレス成形法によ
る圧縮成形体の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a compression molded body by a die press molding method.
【０００２】[0002]
【従来の技術】図３は従来の圧縮成形体の製造方法の主
要部を示す工程図である。図において１は金型、２は上
押し棒、３は下押し棒、４は金型に充填された金属粉末
である。成形体は上押し棒２または上押し棒２と下押し
棒３を駆動し金属粉末４をプレスした後、下押し棒３よ
り押し出すことにより製造される。2. Description of the Related Art FIG. 3 is a process diagram showing a main part of a conventional method for manufacturing a compression molded body. In the figure, 1 is a die, 2 is an upper push rod, 3 is a lower push rod, and 4 is a metal powder filled in the die. The molded body is manufactured by driving the upper push rod 2 or the upper push rod 2 and the lower push rod 3 to press the metal powder 4, and then extruding from the lower push rod 3.
【０００３】[0003]
【発明が解決しようとする課題】上記のような従来の圧
縮成形体の製造方法では、金属粉末４と金型１が密着す
ることや成形体の変質を防止するために潤滑剤が使用で
きないために、成形体を押し出す際に金型１との間に大
きな摩擦力を生じ、成形体外周部に加わるために欠け、
割れの発生や残留応力の増大により、強度と歩留りが低
下がしやすいという問題点があった。In the conventional method for manufacturing a compression molded body as described above, a lubricant cannot be used in order to prevent the metal powder 4 and the mold 1 from sticking to each other and to prevent the molded body from deteriorating. In addition, when the molded body is extruded, a large frictional force is generated between the molded body 1 and the outer peripheral portion of the molded body, which causes chipping.
There is a problem that the strength and the yield are likely to decrease due to the occurrence of cracks and the increase of residual stress.
【０００４】この発明は係る問題を解決するためのもの
で、成形体を押し出す際の欠け、割れの発生や残留応力
の増大を防止する圧縮成形体の製造方法を提供すること
を目的としたものである。The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for producing a compression-molded article which prevents the occurrence of chipping, cracking and increase in residual stress when the molded article is extruded. Is.
【０００５】[0005]
【課題を解決するための手段】この発明に係る圧縮成形
体の製造方法は、プレス後成形体を押し出す際に金型に
振動を加えることを特徴とするものである。A method for manufacturing a compression molded body according to the present invention is characterized in that a vibration is applied to a mold when the molded body is extruded after pressing.
【０００６】[0006]
【作用】上記のような圧縮成形体の製造方法においては
振動により金型と成形体の間に微小の隙間が生じるた
め、成形体を押し出す際の摩擦力が低下し成形体に加わ
る力を低減させることができる。In the method of manufacturing a compression molded body as described above, since a minute gap is generated between the mold and the molded body due to vibration, the frictional force at the time of extruding the molded body is reduced and the force applied to the molded body is reduced. Can be made.
【０００７】[0007]
【実施例】 実施例１．図１はこの発明の一実施例を示す圧縮成形体
の製造方法の主要部を示す工程図である。１〜４は上記
の従来の圧縮成形体の製造方法と全く同一のものであ
る。５は金型１に取り付けられた起振装置であり本実施
例では圧電素子が使用されている。EXAMPLES Example 1. FIG. 1 is a process diagram showing a main part of a method for manufacturing a compression molded body showing an embodiment of the present invention. 1 to 4 are exactly the same as the above-mentioned conventional method for producing a compression molded body. Reference numeral 5 denotes a vibration generator attached to the mold 1, and in this embodiment, a piezoelectric element is used.
【０００８】上記のように構成された圧縮成形体の製造
方法においては、成形体を下押し棒３より押し出す際に
圧電素子５で金型１を振動させることにより、金型１と
成形体の間に微小の隙間が生じるため、摩擦力が低下し
成形体に加わる力を低減させることができる。In the method of manufacturing the compression molded body having the above-described structure, when the molded body is pushed out from the lower push rod 3, the piezoelectric element 5 vibrates the mold 1 so that the space between the mold 1 and the molded body is increased. Since a minute gap is generated in, the frictional force is reduced and the force applied to the molded body can be reduced.
【０００９】実施例２．図２に示す実施例２は金属粉末
４と共に台金６を一体成形するものであり、上記実施例
１と同様の作用が期待でき、さらに金属粉末４と台金６
との剥離の防止にも有効である。Example 2. In the second embodiment shown in FIG. 2, the metal powder 4 and the base metal 6 are integrally molded, and the same effect as that of the first embodiment can be expected, and further, the metal powder 4 and the base metal 6 can be expected.
It is also effective in preventing peeling.
【００１０】実施例３．本発明において金型に振動を与
える時期（タイミング）は、下押し棒３により成形体を
取り出す前であっても、金型と成形体の間に微小の間隙
を形成するため、同じ効果を奏する。Embodiment 3. In the present invention, the timing (timing) of applying vibration to the mold has the same effect because a minute gap is formed between the mold and the molded body even before the molded body is taken out by the lower push rod 3.
【００１１】実施例４．圧電素子５の取付位置と個数は
金型の側面だけでなく、上／下面であっても又は複数で
あっても同じ効果を奏する。Embodiment 4. The same effect can be obtained regardless of whether the piezoelectric element 5 is mounted on the upper surface / lower surface or a plurality of piezoelectric elements 5, not only on the side surface of the mold.
【００１２】[0012]
【発明の効果】この発明は以上説明したとおり、成形体
を押し出す際に金型に振動を加えることにより、成形体
の欠け、割れの発生や残留応力の増大を防止し、歩留り
の向上ができる。また、金属粉末と台金とを一体に成形
することにより、金属粉末と台金の接合性のよい成形体
が得られるという効果が得られる。As described above, according to the present invention, by vibrating the mold when the molded product is extruded, chipping and cracking of the molded product and increase in residual stress can be prevented, and the yield can be improved. . Further, by integrally molding the metal powder and the base metal, it is possible to obtain an effect that a molded body having good bonding properties between the metal powder and the base metal can be obtained.
【図１】この発明の実施例１における圧縮成形体の製造
方法の主要部を示す工程図である。FIG. 1 is a process chart showing a main part of a method for manufacturing a compression-molded article according to Example 1 of the present invention.
【図２】この発明の実施例２における圧縮成形体の製造
方法の主要部を示す断面図である。FIG. 2 is a sectional view showing a main part of a method for manufacturing a compression-molded article according to Example 2 of the present invention.
【図３】従来の圧縮成形体の製造方法の主要部を示す工
程図である。FIG. 3 is a process drawing showing a main part of a conventional method for manufacturing a compression molded body.
１ 金型 ２ 上押し棒 ３ 下押し棒 ４ 金属粉末 ５ 圧電素子 ６ 台金 1 Mold 2 Upper push rod 3 Lower push rod 4 Metal powder 5 Piezoelectric element 6 Base metal
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年７月７日[Submission date] July 7, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
Claims (2)
る方法において、プレスの後成形体を押し出す際に、金
型に震動を加えることを特徴とする成形体の製造方法。1. A method for producing a molded product, which comprises filling a mold with metal powder and compression-molding, wherein a vibration is applied to the mold when the molded product is extruded after pressing.
成形する方法において、プレスの後成形体を押し出す際
に、金型に震動を加えることを特徴とする成形体の製造
方法。2. A method for producing a molded product, which comprises filling a metal powder and a base metal in a mold and performing compression molding, wherein a vibration is applied to the mold when the molded product is extruded after pressing. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9786392A JPH05295405A (en) | 1992-04-17 | 1992-04-17 | Production of molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9786392A JPH05295405A (en) | 1992-04-17 | 1992-04-17 | Production of molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05295405A true JPH05295405A (en) | 1993-11-09 |
Family
ID=14203596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9786392A Pending JPH05295405A (en) | 1992-04-17 | 1992-04-17 | Production of molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05295405A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6845710B2 (en) * | 2001-08-31 | 2005-01-25 | Fette Gmbh | Process and apparatus for compressing metallic powder into a compact |
| JP2019014967A (en) * | 2017-07-10 | 2019-01-31 | 住友電気工業株式会社 | Method for producing a green compact |
-
1992
- 1992-04-17 JP JP9786392A patent/JPH05295405A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6845710B2 (en) * | 2001-08-31 | 2005-01-25 | Fette Gmbh | Process and apparatus for compressing metallic powder into a compact |
| JP2019014967A (en) * | 2017-07-10 | 2019-01-31 | 住友電気工業株式会社 | Method for producing a green compact |
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