JPS6125449B2 - - Google Patents
Info
- Publication number
- JPS6125449B2 JPS6125449B2 JP3742479A JP3742479A JPS6125449B2 JP S6125449 B2 JPS6125449 B2 JP S6125449B2 JP 3742479 A JP3742479 A JP 3742479A JP 3742479 A JP3742479 A JP 3742479A JP S6125449 B2 JPS6125449 B2 JP S6125449B2
- Authority
- JP
- Japan
- Prior art keywords
- punch
- voltage
- forging
- punches
- converting
- 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.)
- Expired
Links
- 238000005242 forging Methods 0.000 claims description 20
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
Landscapes
- Forging (AREA)
Description
【発明の詳細な説明】
第１図は従来の密閉型精密鍛造プレスの１例を
示すシステム図で、１は上金型、２は下金型、３
は素材、４は上ポンチ、５は下ポンチ、６は主ラ
ムである。そして上下ポンチ４，５は上補助ラム
７と下補助ラム８の付勢により、上下金型１，２
内に突出可能に構成されており、また主ラム６の
下端には上金型１を固定した上ボルスター９が取
付けられている。１０は下金型２を固定した下ボ
ルスターで、フレーム１１に取付けられている。
１２ａ，１２ｂ，１２ｃは圧力調整弁、１３ａ，
１３ｂ，１３ｃは切換バルブ、１４ａ，１４ｂ，
１４ｃは油圧ポンプ、１５ａ，１５ｂは流量調整
弁である。DETAILED DESCRIPTION OF THE INVENTION FIG. 1 is a system diagram showing an example of a conventional closed-type precision forging press, in which 1 is an upper mold, 2 is a lower mold, and 3 is a system diagram showing an example of a conventional closed-type precision forging press.
is the material, 4 is the upper punch, 5 is the lower punch, and 6 is the main ram. The upper and lower punches 4 and 5 are actuated by the upper and lower auxiliary rams 7 and 8 to press the upper and lower molds 1 and 2.
The main ram 6 is configured to be able to protrude inward, and an upper bolster 9 to which the upper mold 1 is fixed is attached to the lower end of the main ram 6. 10 is a lower bolster to which the lower mold 2 is fixed, and is attached to the frame 11.
12a, 12b, 12c are pressure regulating valves, 13a,
13b, 13c are switching valves, 14a, 14b,
14c is a hydraulic pump, and 15a and 15b are flow rate regulating valves.
鍛造に当つては、先ず金型１，２が開いている
時に素材３を同金型内に挿入する。次いで切換バ
ルブ１３ｃを操作し、油圧ポンプ１４ｃにより圧
油を上側の室に導入させて主ラム６を下降させる
ことにより、金型１，２を密閉し、次に上下ポン
チ４，５を上下補助ラム７，８の付勢により金型
内に押出し、素材３の鍛造を開始する。この時鍛
造製品３ａの寸法精度とその品質を保証するに
は、第２図及び第３図に示すように素材変形開始
時の上下ポンチ４，５の位置Ａ，Ｂと、変形終了
時の上下ポンチ位置A1，B1が常に一定である必
要がある。 In forging, first, while the molds 1 and 2 are open, the material 3 is inserted into the molds. Next, the switching valve 13c is operated, the hydraulic pump 14c introduces pressure oil into the upper chamber, and the main ram 6 is lowered to seal the molds 1 and 2, and then the upper and lower punches 4 and 5 are used as vertical support. The material 3 is pushed into the mold by the urging of the rams 7 and 8, and forging of the material 3 is started. At this time, in order to guarantee the dimensional accuracy and quality of the forged product 3a, it is necessary to set the positions A and B of the upper and lower punches 4 and 5 at the start of material deformation and the upper and lower positions at the end of deformation, as shown in Figures 2 and 3. Punch positions A 1 and B 1 must always be constant.
また複雑な鍛造製品では、単に素材の変形開始
と終了時の上下位置ポンチ位置Ａ，Ｂ及びA1，
B1のみでなく、この変形過程に於ける連続した
ポンチ位置の制御まで要求される。しかし従来の
第１図の鍛造プレスでは、これらの要求の全てを
満足させることはできなかつた。 In addition, for complex forged products, simply determine the upper and lower punch positions A, B, and A 1 , at the start and end of material deformation.
Not only B 1 but also continuous control of the punch position during this deformation process is required. However, the conventional forging press shown in FIG. 1 could not satisfy all of these requirements.
本発明は前記従来の欠点を解消するために提案
されたもので、複数のポンチを有する精密鍛造プ
レスに於いて、それぞれポンチの現在位置を電圧
に変換する手段と、あらかじめ決められたそれぞ
れのポンチの動きに応じた電圧を発生する手段
と、変換手段から発生される電圧と発生手段から
発生される電圧を比較する手段と、この比較手段
の出力に応じて電圧差を零にする方向にそれぞれ
のポンチを駆動する手段とを具えてなる精密鍛造
プレスを提供せんとするものである。 The present invention has been proposed in order to solve the above-mentioned conventional drawbacks, and includes a means for converting the current position of each punch into voltage in a precision forging press having a plurality of punches, and a means for converting the current position of each punch into voltage, and means for generating a voltage according to the movement of the converting means, means for comparing the voltage generated from the converting means and the voltage generated from the generating means, and means for reducing the voltage difference to zero according to the output of the comparing means, respectively. It is an object of the present invention to provide a precision forging press comprising means for driving a punch.
以下本発明の実施例を図面について説明する。
なお、第４図の本発明の実施例に於いて、第１図
の従来機構と同一部分は同一符号を用いて説明す
ることにする。第４図に於いて１は上金型、２は
下金型、３は素材、４は上ポンチ、５は下ポン
チ、６は主ラム、７は上補助ラム、８は下補助ラ
ム、９は上ボルスター、１０は下ボルスター、１
１はフレーム、１２ａ，１２ｂ，１２ｃは圧力調
整弁、１３ｃは切換バルブ、１４ａ，１４ｂ，１
４ｃは油圧ポンプであり、以上の各部材は第１図
の従来構造と同じであるため、ここではこれらの
構造の詳細な説明は行なわない。 Embodiments of the present invention will be described below with reference to the drawings.
In the embodiment of the present invention shown in FIG. 4, the same parts as those of the conventional mechanism shown in FIG. 1 will be described using the same reference numerals. In Figure 4, 1 is the upper mold, 2 is the lower mold, 3 is the material, 4 is the upper punch, 5 is the lower punch, 6 is the main ram, 7 is the upper auxiliary ram, 8 is the lower auxiliary ram, 9 is the upper bolster, 10 is the lower bolster, 1
1 is a frame, 12a, 12b, 12c are pressure regulating valves, 13c is a switching valve, 14a, 14b, 1
4c is a hydraulic pump, and since each of the above members is the same as the conventional structure shown in FIG. 1, a detailed explanation of these structures will not be given here.
次に１６はフレーム１１に設けられたポテンシ
ヨメータ１７ｂの取付台、１８は上ボルスター９
に設けられたポテンシヨメータ１７ａの取付台で
ある。また１９ａ，１９ｂは夫々上補助ラム７と
下補助ラム８に取付けられたラツクであり、ポテ
ンシヨメータ１７ａ，１７ｂの軸端に取付けられ
たピニオン２０ａ，２０ｂと噛合つている。 Next, 16 is a mounting base for the potentiometer 17b provided on the frame 11, and 18 is an upper bolster 9.
This is a mounting base for the potentiometer 17a provided in the. Further, 19a and 19b are racks attached to the upper auxiliary ram 7 and the lower auxiliary ram 8, respectively, and mesh with pinions 20a and 20b attached to the shaft ends of potentiometers 17a and 17b.
２１ａ，２１ｂはアンプ、２２ａ，２２ｂはサ
ーボバルブ、２３は目標電圧発生装置、２４はテ
ンプレートで軸Ｃ−Ｃに沿つて左右方向に移動可
能となつている。２５ａ，２５ｂはポテンシヨメ
ータで、軸端には夫々ピニオン２６ａ，２６ｂを
有し、ラツク２７ａ，２７ｂと夫々噛合つてい
る。またラツク２７ａ，２７ｂは、夫々回転ロー
ラ２８ａ，２８ｂを有し、かつラツクガイド２９
ａ，２９ｂにより支持されており、更に図示しな
い手段により回転ローラ２８ａ，２８ｂを介して
常にテンプレート２４の斜面に押し付けられる如
く構成されている。 Reference numerals 21a and 21b are amplifiers, 22a and 22b are servo valves, 23 is a target voltage generator, and 24 is a template, which is movable in the left-right direction along the axis CC. 25a and 25b are potentiometers having pinions 26a and 26b at their shaft ends, respectively, and meshing with racks 27a and 27b, respectively. Furthermore, the racks 27a and 27b have rotating rollers 28a and 28b, respectively, and a rack guide 29.
a, 29b, and is configured such that it is always pressed against the slope of the template 24 via rotating rollers 28a, 28b by means not shown.
次に作用を説明すると、上補助ラム７と上ポン
チ４は一体的な動きをするので、上補助ラム７の
位置に応じた電圧を発生するポテンシヨメータ１
７ａは、上ポンチ４の金型内への押込量を表わす
ことができる。また下ポンチ５についても同様で
あつて、ポテンシヨメータ１７ｂの発生する電圧
は、下ポンチ５の金型内への押込量を示す。 Next, to explain the operation, since the upper auxiliary ram 7 and the upper punch 4 move integrally, the potentiometer 1 generates a voltage according to the position of the upper auxiliary ram 7.
7a can represent the pushing amount of the upper punch 4 into the mold. The same applies to the lower punch 5, and the voltage generated by the potentiometer 17b indicates the amount of push of the lower punch 5 into the mold.
ポテンシヨメータ１７ａ，１７ｂの電圧は
X1，X2部に於いて目標電圧発生装置２３よりの
目標電圧と夫々比較され、その差はアンプ２１
ａ，２１ｂで増幅されてサーボバルブ２２ａ，２
２ｂに入力される。これによりサーボバルブ２２
ａ，２２ｂは付勢され、目標電圧とポテンシヨメ
ータ１７ａ，１７ｂよりの電圧との差が無くなる
よう、上補助ラム７と下補助ラム８は夫々油圧に
より駆動される。従つて上下ポンチ４，５は目標
電圧通り制御されることになる。 The voltage of potentiometers 17a and 17b is
In the X 1 and X 2 sections, they are compared with the target voltage from the target voltage generator 23, and the difference is detected by
a, 21b, and the servo valves 22a, 2
2b. As a result, the servo valve 22
a, 22b are energized, and the upper auxiliary ram 7 and the lower auxiliary ram 8 are driven by hydraulic pressure, respectively, so that there is no difference between the target voltage and the voltage from the potentiometers 17a, 17b. Therefore, the upper and lower punches 4 and 5 are controlled according to the target voltage.
目標電圧発生装置２３はテンプレート２４の輪
郭に応じて上下ポンチ４，５の目標値が発せられ
るので、テンプレート２４の輪郭を鍛造開始位置
より終了位置まで適当なものとし、テンプレート
２４を鍛造開始位置より終了位置まで、鍛造中矢
印Ｄ方向に移動させれば、鍛造中の全工程にわた
つて上下ポンチ４，５の動きが制御可能となる。
なお、以上は上下方向にポンチを有するプレスに
ついて説明したが、上下ばかりでなく左右方向に
もポンチを設けて、上下、左右の４方向よりポン
チが作動するようにしたプレスでも、同様な制御
方式が適用できることは明らかである。また目標
電圧発生装置２３はテンプレート方式で説明した
が、これを純電気的装置（例えば関数発生器、電
算機等）に置替えて目標電圧を発生させるように
することも可能である。 Since the target voltage generator 23 generates target values for the upper and lower punches 4 and 5 according to the contour of the template 24, the contour of the template 24 is made appropriate from the forging start position to the end position, and the template 24 is moved from the forging start position to the end position. If they are moved in the direction of arrow D during forging to the end position, the movement of the upper and lower punches 4 and 5 can be controlled throughout the entire forging process.
Although the above description has been about a press that has punches in the vertical direction, the same control method can be applied to a press that has punches not only in the vertical direction but also in the left and right directions so that the punches operate from four directions: up, down, left and right. is clearly applicable. Further, although the target voltage generating device 23 has been described using a template method, it is also possible to replace this with a purely electrical device (for example, a function generator, a computer, etc.) to generate the target voltage.
以上詳細に説明した如く本発明は、複数のポン
チを有する精密鍛造プレスに於いて、それぞれの
ポンチの現在位置を電圧に変換する手段と、あら
かじめ決められたそれぞれのポンチの動きに応じ
た電圧を発生する手段と、変換手段から発生され
る電圧と発生手段から発生される電圧を比較する
手段と、この比較手段の出力に応じて電圧差を零
にする方向にそれぞれのポンチを駆動する手段と
を具えてなるもので、鍛造開始位置より鍛造終了
位置まで鍛造中を含めて、ポンチの動きが制御さ
れるようになつているので、鍛造品の変形フロー
状態が常に一定となり、高品質で、かつ寸法精度
の良好な製品が得られる。 As explained in detail above, the present invention provides means for converting the current position of each punch into a voltage in a precision forging press having a plurality of punches, and a means for converting the current position of each punch into a voltage, and a voltage that corresponds to a predetermined movement of each punch. means for comparing the voltage generated from the converting means with the voltage generated from the generating means; and means for driving each punch in a direction to make the voltage difference zero according to the output of the comparing means. The movement of the punch is controlled from the forging start position to the forging end position, including during forging, so the deformation flow state of the forged product is always constant, resulting in high quality, Moreover, a product with good dimensional accuracy can be obtained.
第１図は従来の精密鍛造プレスの１例を示すシ
ステム図、第２図は第１図に於ける鍛造開始時の
金型部分の拡大断面図、第３図は鍛造が終了して
素材が型打ちされた時の同部分の拡大断面図、第
４図は本発明の実施例を示すシステム図である。
図の主要部分の説明、３……素材、４……上ポ
ンチ、５……下ポンチ、７……上補助ラム、８…
…下補助ラム、１７ａ，１７ｂ……ポテンシヨメ
ータ、２１ａ，２１ｂ……アンプ、２２ａ，２２
ｂ……サーボバルブ、２３……目標電圧発生装
置、２４……テンプレート、２５ａ，２５ｂ……
ポテンシヨメータ。
Figure 1 is a system diagram showing an example of a conventional precision forging press, Figure 2 is an enlarged cross-sectional view of the mold part at the start of forging in Figure 1, and Figure 3 is a diagram showing the material after forging is completed. FIG. 4, which is an enlarged sectional view of the same part when stamped, is a system diagram showing an embodiment of the present invention. Explanation of the main parts of the diagram, 3...Material, 4...Upper punch, 5...Lower punch, 7...Upper auxiliary ram, 8...
...Lower auxiliary ram, 17a, 17b...Potentiometer, 21a, 21b...Amplifier, 22a, 22
b... Servo valve, 23... Target voltage generator, 24... Template, 25a, 25b...
potentiometer.
Claims (1)
て、それぞれのポンチの現在位置を電圧に変換す
る手段と、あらかじめ決められたそれぞれのポン
チの動きに応じた電圧を発生する手段と、変換手
段から発生される電圧と発生手段から発生される
電圧を比較する手段と、この比較手段の出力に応
じて電圧差を零にする方向にそれぞれのポンチを
駆動する手段とを具えたことを特徴とする精密鍛
造プレス。1. In a precision forging press having multiple punches, there is a means for converting the current position of each punch into voltage, a means for generating voltage according to the predetermined movement of each punch, and a voltage generated from the converting means. and means for comparing the voltage generated by the generating means with the voltage generated by the generating means, and means for driving each punch in a direction to make the voltage difference zero according to the output of the comparing means. Forging press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3742479A JPS55128341A (en) | 1979-03-29 | 1979-03-29 | Precise forging press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3742479A JPS55128341A (en) | 1979-03-29 | 1979-03-29 | Precise forging press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55128341A JPS55128341A (en) | 1980-10-04 |
| JPS6125449B2 true JPS6125449B2 (en) | 1986-06-16 |
Family
ID=12497129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3742479A Granted JPS55128341A (en) | 1979-03-29 | 1979-03-29 | Precise forging press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55128341A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59130642A (en) * | 1983-01-14 | 1984-07-27 | Koyo Seiko Co Ltd | Hydraulically driven closed forging machine |
| JPH076996Y2 (en) * | 1991-04-03 | 1995-02-22 | 光洋精工株式会社 | Hydraulic drive closed forging machine |
| JPH11314134A (en) * | 1998-05-06 | 1999-11-16 | Komatsu Ltd | Die device for closed forging |
| CN1989352B (en) * | 2004-09-08 | 2011-08-17 | Ntn株式会社 | Shaft member for fluid bearing device and its manufacturing method |
| CN102974732B (en) * | 2012-12-11 | 2014-11-12 | 阎善武 | Forged hydraulic press and method |
-
1979
- 1979-03-29 JP JP3742479A patent/JPS55128341A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55128341A (en) | 1980-10-04 |
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