JPH01143799A - Method and device for vibration powder compacting - Google Patents
Method and device for vibration powder compactingInfo
- Publication number
- JPH01143799A JPH01143799A JP62297666A JP29766687A JPH01143799A JP H01143799 A JPH01143799 A JP H01143799A JP 62297666 A JP62297666 A JP 62297666A JP 29766687 A JP29766687 A JP 29766687A JP H01143799 A JPH01143799 A JP H01143799A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- pressurizing
- pressure
- cylinder
- die
- 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.)
- Granted
Links
- 239000000843 powder Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 9
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 230000005284 excitation Effects 0.000 claims description 19
- 238000000465 moulding Methods 0.000 claims description 13
- 238000005056 compaction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 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)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Powder Metallurgy (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、樹脂粉末、金属粉末やセラミック蚤粉末など
を振動を加えなから圧粉成形するための撮動粉末成形（
方法及び）装置に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention is a method for compacting resin powder, metal powder, ceramic fleas powder, etc. without applying vibration.
METHODS AND APPARATUS.
（従来の技術）
従来粉末全ダイに封入し、油圧成形プレスで成形ざ几で
いたが、近時こｎに振動を加えて圧粉成形することが行
わ几でおり、また、こｎに用いら几る装置では振動周波
数が２７ＫＨＺｔｉは２０ ＫＨＺといった超音波振動
を成形パンチやダイに与えており、また、成形圧力は油
圧によっている。(Prior technology) Conventionally, the powder was sealed in the entire die and compacted using a hydraulic press, but recently it has become common practice to add vibration to compaction. In this machine, ultrasonic vibrations with a vibration frequency of 27 KHZ or 20 KHZ are applied to the forming punch or die, and the forming pressure is based on hydraulic pressure.
（発明が解決しようとする問題点）
従来の装置は油圧成形プレスであり、大きな圧力で成形
する必要があり、いきおい装置の容量が大きくなった。(Problems to be Solved by the Invention) The conventional device is a hydraulic molding press, and it is necessary to mold with a large pressure, resulting in a large capacity of the molding device.
まｔ、大きな圧力で成形する理由力・ら粉末材料の組織
の破壊が発生することがある。Furthermore, the structure of the powder material may be destroyed due to the force of molding with large pressure.
さらに、パンチの周辺部に圧力が集中し、中心部分の圧
力が不均一になり、成形品全体の密度も一定しない・加
えて粉末間に介在するエアの十分なエア抜きがなさ乃な
いうちに加圧成形がなさｎるために成形品の密度不均一
を助長する。Furthermore, the pressure concentrates around the periphery of the punch, the pressure in the center becomes uneven, and the density of the entire molded product is also inconsistent.In addition, the air intervening between the powders is not sufficiently vented. Pressure molding is not performed, which promotes non-uniform density of the molded product.
さらにこの問題を解決するために成形パンチやダイに圧
電アクチュエータで超音波振動を発生させ、成形品の密
度を一定にするなどの改良を試みらｎたが、圧電アクチ
ュエータの振動振幅が小さいｔめ、エネルギーの発生が
十分でなく、必ずしも有効な結果を上げていない・
（問題点を解決する九めの手段）
本発明は、樹脂粉末、金属粉末やセラミックなどの粉末
をダイに封入し、ｌ〜ｌ０Ｈｚの振動を与えてエア抜き
し、さらに５〜１０００ ＨＺの振動を与えて圧粉成形
して密度の均一な成形品を得之のであり、成形加工に用
いらｎる装置として加圧シリンダ、および加振用サーボ
シリンダの駆動源として油圧を用い、サーボシリンダは
加振用関数発生器からの指令信号を加振サーボアンプを
経て制御さｎるとともに、加振差動トランスからのフィ
ードバック信号を加振サーボアンプに入力して常に適正
な成形状態を維持したものである。Furthermore, attempts were made to improve the density of the molded product by generating ultrasonic vibrations using piezoelectric actuators in the forming punches and dies to solve this problem, but the piezoelectric actuators' vibration amplitude was small. However, the generation of energy is not sufficient, and the results are not necessarily effective. The process involves applying vibrations of ~10Hz to remove air, and then applying vibrations of 5~1000Hz to compact the product to obtain a molded product with a uniform density. The hydraulic pressure is used as the drive source for the excitation servo cylinder, and the servo cylinder receives a command signal from the excitation function generator via the excitation servo amplifier, and also receives a feedback signal from the excitation differential transformer. is input into the excitation servo amplifier to maintain proper molding conditions at all times.
（作 用）
まず、ダイ叩又はｑ８に粉末（１υを充填する。次いで
、加振用関数発生器（３）カらの指令でダイα０ 、
ａｓに１−１０ ＨＺの振動が与えらｎ１粉禾のエア抜
きカｆ
を行う。予め設定された時間濾過して充分にエア抜きが
終了すると加振用関数発生器（３）カらの指令で５〜１
００ＯＨＺの振動が加振フレーム（２１ｆｔＭてダイ（
１（１、ａ均に与えらｎる・この場合、振幅は０．０５
〜１．０ ｍ１１であり、大きなパワーが与えらｎる。(Function) First, powder (1υ) is filled into the die punch or q8. Next, the die α0,
A vibration of 1-10 Hz is applied to as, and air is removed from n1 powder. When the air has been sufficiently removed after filtration for a preset time, a command from the excitation function generator (3) will cause 5 to 1
00OHZ vibration is applied to the excitation frame (21ftM die (
1 (1, given to a uniform n) In this case, the amplitude is 0.05
~1.0 m11, giving a large amount of power.
同時に加圧用関数発生器口からの指令信号で加圧用サー
ボバルブα４が作用し、上パンチ（９）に油圧が作用し
て圧粉成形がなさｎ ；ｂ、さらに、第２図に示す実施
例では成形時に付与さｎる縦振動に加えて５〜ｌ ００
０Ｈｚの横振動が加えらｎる。横振動をプラスすると粉
体はより均一な密度に圧粉成形さｎる。あるいは横振動
のみの場合でも有効である。At the same time, the pressurizing servo valve α4 acts in response to a command signal from the pressurizing function generator port, and hydraulic pressure acts on the upper punch (9) to prevent powder compaction. Then, in addition to the longitudinal vibration imparted during molding, 5 to l 00
A lateral vibration of 0 Hz is applied. By adding transverse vibration, the powder is compacted to a more uniform density. Alternatively, it is effective even in the case of only lateral vibration.
（実施例）
次に実施例を第１１１Ｎにより説明する・コ字形の加振
フレーム（２）の下部には成形用粉末を装入する庭付ダ
イαＯが載置され、さらに上部には加圧シリンダ（８）
が固定さ几ている。加圧シリンダ（８）のピストンロッ
ド（至）の先端に取付けらｎた上パンチ（９）は、庭付
ダイ１１０に摺動可能に挿通される。加振用サーボバル
ブ（５）を経て圧油源妙と連通するサーボシリンダ（１
）のピストンロッド（７）の上端は前記加振フレーム（
２）の下部に連結される。また前記ピストンロッドの下
端は加振用差動トランス（６）に対置されると共に、該
加振用差動トランスは加振用差動トランスアンプ（７）
ヲ経て加振用サーボアンプ（４］に接続さｎていて、前
記加振用差動トランスにて検知さｎた信号が加振用サー
ボアンプ（４）にフィードバックさｎる。さらに加振用
サーボアンプ（４）は振動数、振幅、加振時間、位置な
どの指令信号奮発する加振用関数発生器（３）に接続さ
ｎる。(Example) Next, an example will be explained using No. 111N. A garden die αO for charging powder for molding is placed at the bottom of the U-shaped vibration frame (2), and a pressurizing die is placed at the top. Cylinder (8)
is fixed. The upper punch (9) attached to the tip of the piston rod (to) of the pressurizing cylinder (8) is slidably inserted into the garden die 110. The servo cylinder (1) communicates with the pressure oil source through the vibration servo valve (5).
The upper end of the piston rod (7) of the excitation frame (
2) is connected to the lower part of. Further, the lower end of the piston rod is placed opposite to an excitation differential transformer (6), and the excitation differential transformer is connected to an excitation differential transformer amplifier (7).
The signal detected by the differential transformer for vibration is fed back to the servo amplifier for vibration (4). The servo amplifier (4) is connected to an excitation function generator (3) that generates command signals such as frequency, amplitude, excitation time, and position.
加振フレーム（２）に載置さｎた加圧シリンダ（８）
ｉｄ、加圧用サーボバルブα４を経て圧油源−に接続さ
れる。加圧シリンダの上パンチ（９）の位置は、上パン
チに取付けらｎたバー叩の先端に対置さｎた加圧用差動
トランスによって検知される。加圧用差動トランスα５
は加圧用差動トランスアンプαｆｉ経て加圧用サーボア
ンプα３に接続さｎていて、上記の加圧用差動トランス
αりによって検知さｆｌ−た信号は加圧用サーボアンプ
α３にフィードバラフサ几ル。Pressure cylinder (8) placed on vibration frame (2)
id, and is connected to a pressure oil source through a pressurizing servo valve α4. The position of the upper punch (9) of the pressurizing cylinder is detected by a pressurizing differential transformer mounted on the upper punch and placed opposite to the tip of the bar punch. Pressure differential transformer α5
is connected to the pressurizing servo amplifier α3 via the pressurizing differential transformer αfi, and the signal detected by the pressurizing differential transformer α is fed to the pressurizing servo amplifier α3.
さらに加圧用サーホアンプ卯は加圧用関数発生器ｑａに
接続さ几て、加圧用関数発生器ａつからの振動数・振幅
・加工時間・位置などの指令信号が７ＪＯ王用サーボア
ンプｑ３から加圧用サーホバルフ創４に送らｎて、７１
０ ａＥ用クシリンダ８）のロンド（至）の位置が制御
される。Furthermore, the pressurizing servo amplifier U is connected to the pressurizing function generator qa, and command signals such as frequency, amplitude, machining time, position, etc. from the pressurizing function generator A are sent from the 7JO servo amplifier Q3 for pressurizing. Send to Sirhobalf 4, 71
0 The position of the rondo (to) of the aE cylinder 8) is controlled.
第２図に示す実施例では加去フレームに振動全付加する
サーボアンプの制御回路は第１図の実施例と同じである
ので説明は省略するが、成形用粉末ｑ〃を封入したダイ
α８は上ノくンチ（９］の他に下ノ（ンチαカが設けら
ｎ、下パンチは加振フレームの底部に固定さｎて下パン
チから振動が粉末に加わるようになっている。加圧シリ
ンダ（８）は差圧アンプ（至）を経て加圧用サーボアン
プ（２）に接続され、加圧シリンダ（８）の差圧検知信
号が加圧用サーボアンプα３にフィードバックされる。In the embodiment shown in Fig. 2, the control circuit of the servo amplifier that applies all the vibrations to the ablation frame is the same as the embodiment shown in Fig. 1, so the explanation will be omitted. In addition to the upper punch (9), a lower punch (9) is provided, and the lower punch is fixed to the bottom of the vibration frame so that vibration is applied to the powder from the lower punch. The cylinder (8) is connected to a pressurizing servo amplifier (2) via a differential pressure amplifier (to), and a differential pressure detection signal of the pressurizing cylinder (8) is fed back to the pressurizing servo amplifier α3.
さらに加圧用サーボアンプα３は、振動数・差圧・加振
時間・位置などの指令信号を発する加圧用関数発生器（
６）に接続さｎる。かくて、加圧シリンダ（８）の上パ
ンチ（９）の成形位ｆｉｔは加圧シリンダ（８）の動き
により圧力制御さｎることになる。Furthermore, the pressurizing servo amplifier α3 is a pressurizing function generator (
6). Thus, the forming position of the upper punch (9) of the pressure cylinder (8) is pressure-controlled by the movement of the pressure cylinder (8).
さらに、本実施例では、ダイ（１８の外側に横加援用す
−ボシリンダ翰のロッド０ηの一端が取付けらｎ、他端
には横加振用差動トランス（ハ）が対置さｎ。Further, in this embodiment, one end of the rod 0η of the cylinder holder for lateral support is attached to the outside of the die 18, and a differential transformer for lateral vibration (c) is placed opposite to the other end.
該横加振用差動トランスで検知さｎｆｌ−位置信号は横
加振用差動トランスアンプ翰ヲ経て横加援用サーボバル
ブ四にフィードバックされる。さらに横加援用す−ボシ
リンダ翰は横加援用す−ボバルブ四を経て圧油源０オに
接続さｎる。横加振用関数発生器３ηは横加掘用す−ボ
アンプ翰に接続さｎ２ていて、横加振用関数発生器Ｑυ
からの指令信号はサーボアンプ（ハ）を経てサーボバル
ブ＠に達し、ダイＱ８への横からの加振が制御される。The nfl-position signal detected by the lateral vibration differential transformer is fed back to the lateral support servo valve 4 via the lateral vibration differential transformer amplifier. Further, the lateral support cylinder head is connected to a pressure oil source 0 via a lateral support valve 4. The lateral vibration function generator 3η is connected to the lateral vibration amplifier wire n2, and the lateral vibration function generator Qυ
The command signal from the servo amplifier (c) reaches the servo valve @, and the lateral vibration to the die Q8 is controlled.
なお上記実施例は代表例であり、加振方法、金型形状、
加圧制御方式の組み合せは第１表のどの組み合せでも可
能である。The above example is a typical example, and the vibration method, mold shape,
Any combination of pressurization control methods listed in Table 1 is possible.
第 １ 表 である。Chapter 1 Table It is.
第 ２ 表
圧粉成形を行った実施例を示すと第３表のようなもので
ある。Table 2 Table 3 shows examples in which powder compaction was performed.
第 ３ 表
本発明は、上記のように低周波の振動でエア抜きがなさ
れ、次いで５〜ｌ０ＱＯＨｚの周波数の振動を加えなが
ら圧粉成形さｎるので、きわめて密度の緻密な成形品が
得られる。Table 3 In the present invention, air is removed by low-frequency vibration as described above, and then powder compaction is performed while applying vibration at a frequency of 5 to 10 QOHz, so a molded product with extremely high density can be obtained. .
さらに、本発明に係る振動成形装置は成形時に５〜１０
０ＯＨＺの低周波の振動しながら加圧するため振幅は０
．０５〜１．０ ！１３となり成形効率が良く従ってパ
ワー効率も良くなりマシ、ンの容量を小さくすることが
できる。従って、適正な圧縮力で成形でき成形品に不均
一層も発生せずに成形できる。Furthermore, the vibration molding apparatus according to the present invention has a vibration molding temperature of 5 to 10
The amplitude is 0 because the pressure is applied while vibrating at a low frequency of 0OHZ.
．． 05~1.0! 13, the molding efficiency is good, the power efficiency is also good, and the capacity of the machine can be reduced. Therefore, the molded product can be molded with an appropriate compression force and can be molded without producing an uneven layer.
また、本発明は実施例に示すように加圧力を圧力制御方
式にも位置制御方式にも制御することができるので、従
来のプレス機よりも高い加工寸法精度を維持できる。Furthermore, as shown in the embodiments of the present invention, the pressurizing force can be controlled using both the pressure control method and the position control method, so that higher machining dimensional accuracy can be maintained than with conventional press machines.
第１図は本発明の実施例の概略図、第２図は他の実施例
の概略図である。
１・・・サーボシリンダ ２・・・加振フレーム３・・
・加振用関数発生器 ４・・・加振用サーボアンプ５・
・・ ｌ サーボバルブ６・・・ Ｉ 差動トランス８
・・・加圧シリンダ １０・・・ダ イ１２・・・加
圧用関数発生器 １３・・・加圧用サーボアンプ１４・
・・ ｌサーボバルブ １Ｂ・・・ダ イ２７・・・圧
油源 ２９・・・圧油源３２・・・ Ｉ
代理人 弁理士 河 内 潤 二
斎１ 図
拓２図FIG. 1 is a schematic diagram of an embodiment of the present invention, and FIG. 2 is a schematic diagram of another embodiment. 1... Servo cylinder 2... Vibrating frame 3...
・Excitation function generator 4...Excitation servo amplifier 5・
... l Servo valve 6... I Differential transformer 8
...Pressure cylinder 10...Die 12...Pressure function generator 13...Pressure servo amplifier 14.
...l Servo valve 1B...Die 27...Pressure oil source 29...Pressure oil source 32...I Agent Patent attorney Jun Kawachi Nisai 1 Illustration 2
Claims (4)
をダイに封入し、１〜１０ＨＺの振動を付加する第１の
工程と、５〜１０００ＨＺの振動を付加しながら圧粉成
形する第２の工程とからなる振動粉末成形方法。(1) The first step is to enclose powder such as resin powder, metal powder, ceramic powder, etc. in a die and apply vibrations of 1 to 10 Hz, and compaction while applying vibrations of 5 to 1000 Hz. A vibratory powder compacting method comprising a second step of:
一部を取付けた加振フレームと、加振フレームに取付け
られ粉末を加圧する加圧シリンダと、ロッドの一端が加
振フレームに取付けられ他端が加振用差動トランスに対
置されたサーボシリンダとからなり、該サーボシリンダ
は加振用サーボバルブを経て圧油源に接続され、さらに
該サーボバルブは加振用関数発生器からの指令信号を受
ける加振用サーボアンプに接続されると共に、前記加圧
シリンダは加圧用サーボバルブを経て圧油源に接続され
、さらに、該加圧用サーボバルブは加圧用関数発生器の
指令信号を受ける加圧用サーボアンプに接続され、加圧
シリンダを前記加圧用サーボアンプを介して制御する振
動粉末成形装置。(2) A powder compacting die, a vibrating frame to which at least a portion of the powder compacting die is attached, a pressure cylinder attached to the vibrating frame to pressurize the powder, and one end of a rod attached to the vibrating frame. It consists of a servo cylinder whose other end is placed opposite to an excitation differential transformer, and the servo cylinder is connected to a pressure oil source via an excitation servo valve, and the servo valve is connected to a pressure oil source from an excitation function generator. The pressurizing cylinder is connected to an excitation servo amplifier that receives a command signal, and is also connected to a pressure oil source via a pressurizing servo valve, and the pressurizing servo valve also receives a command signal from a pressurizing function generator. A vibratory powder molding apparatus that is connected to a pressurizing servo amplifier that receives a pressurizing cylinder, and controls a pressurizing cylinder via the pressurizing servo amplifier.
を検知する加圧用差動トランスを介して位置制御される
特許請求の範囲第２項記載の振動粉末成形装置。(3) The vibratory powder molding apparatus according to claim 2, wherein the pressure cylinder is position-controlled via a pressure differential transformer that detects the position of the punch of the pressure cylinder.
る差圧アンプを介して圧力制御される特許請求の範囲第
２項記載の振動粉末成形装置。(4) The vibratory powder molding apparatus according to claim 2, wherein the pressure of the pressurized cylinder is controlled via a differential pressure amplifier that detects a differential pressure between the pressurized cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62297666A JPH01143799A (en) | 1987-11-27 | 1987-11-27 | Method and device for vibration powder compacting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62297666A JPH01143799A (en) | 1987-11-27 | 1987-11-27 | Method and device for vibration powder compacting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01143799A true JPH01143799A (en) | 1989-06-06 |
| JPH0325278B2 JPH0325278B2 (en) | 1991-04-05 |
Family
ID=17849557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62297666A Granted JPH01143799A (en) | 1987-11-27 | 1987-11-27 | Method and device for vibration powder compacting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01143799A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0381097A (en) * | 1989-08-22 | 1991-04-05 | Matsushita Electric Ind Co Ltd | Powder molding machine |
| US5039476A (en) * | 1989-07-28 | 1991-08-13 | Ube Industries, Ltd. | Method for production of powder metallurgy alloy |
| JP2004174596A (en) * | 2002-11-29 | 2004-06-24 | Nano Control:Kk | Powder press and method of the same |
| CN102950789A (en) * | 2011-08-26 | 2013-03-06 | 东北大学 | Device for realizing powder high-density vibration compression moulding |
| CN111804909A (en) * | 2020-06-18 | 2020-10-23 | 西北稀有金属材料研究院宁夏有限公司 | Powder filling method of beryllium material forming blank for CETR reactor |
-
1987
- 1987-11-27 JP JP62297666A patent/JPH01143799A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5039476A (en) * | 1989-07-28 | 1991-08-13 | Ube Industries, Ltd. | Method for production of powder metallurgy alloy |
| JPH0381097A (en) * | 1989-08-22 | 1991-04-05 | Matsushita Electric Ind Co Ltd | Powder molding machine |
| JP2004174596A (en) * | 2002-11-29 | 2004-06-24 | Nano Control:Kk | Powder press and method of the same |
| CN102950789A (en) * | 2011-08-26 | 2013-03-06 | 东北大学 | Device for realizing powder high-density vibration compression moulding |
| CN111804909A (en) * | 2020-06-18 | 2020-10-23 | 西北稀有金属材料研究院宁夏有限公司 | Powder filling method of beryllium material forming blank for CETR reactor |
| CN111804909B (en) * | 2020-06-18 | 2022-07-08 | 西北稀有金属材料研究院宁夏有限公司 | Powder filling method of beryllium material forming blank for CETR reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0325278B2 (en) | 1991-04-05 |
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