JPH0376700U - - Google Patents
Info
- Publication number
- JPH0376700U JPH0376700U JP13886289U JP13886289U JPH0376700U JP H0376700 U JPH0376700 U JP H0376700U JP 13886289 U JP13886289 U JP 13886289U JP 13886289 U JP13886289 U JP 13886289U JP H0376700 U JPH0376700 U JP H0376700U
- Authority
- JP
- Japan
- Prior art keywords
- deviation
- slide
- drive
- drive system
- calculated
- 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
- 238000001514 detection method Methods 0.000 claims 9
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Presses (AREA)
Description
第１図はこの考案の一実施例を示す制御ブロツ
ク図、第２図は同実施例を適用するプレス装置の
概念的構成を示す斜視図、第３図は前記実施例の
補償回路の特性を示すグラフ、第４図は補償回路
の他の特性を示すグラフである。
１……スライド、２……上型、３……ベツド、
４……下型、ＳＬ１〜ＳＬ４……シリンダ、ＥＮ
１〜ＥＮ４……ラインエンコーダ、１１〜１４…
…偏差演算器、２１〜２４……Ｄ／Ａ演算器、３
２〜３４……駆動系間偏差演算器、４１〜４４…
…補償回路、５１〜５４……増幅器、６１〜６４
……サーボバルブ。
Fig. 1 is a control block diagram showing an embodiment of this invention, Fig. 2 is a perspective view showing the conceptual configuration of a press device to which the embodiment is applied, and Fig. 3 shows the characteristics of the compensation circuit of the above embodiment. The graph shown in FIG. 4 is a graph showing other characteristics of the compensation circuit. 1...Slide, 2...Upper mold, 3...Bed,
4...Lower die, SL1 to SL4...Cylinder, EN
1~EN4...Line encoder, 11~14...
...Difference calculator, 21-24...D/A calculator, 3
2 to 34...Driving system deviation calculator, 41 to 44...
...Compensation circuit, 51-54...Amplifier, 61-64
...servo valve.
Claims (1)
シリンダが配設されたスライドの各部位のベツド
に対する高さ位置をそれぞれ検出する複数のスラ
イド位置検出手段と、スライド高さ位置指令と前
記複数のスライド位置検出手段の検出値との各偏
差に基づき対応する油圧シリンダをそれぞれ駆動
する複数の駆動系とを具えた油圧プレスのスライ
ド駆動装置において、 前記複数の駆動系のなかの１つの所定の駆動系
で求めた偏差と当該駆動系で求めた偏差との偏差
をそれぞれ求め、該求めた偏差を駆動系間偏差と
して出力する偏差演算手段と、 駆動系間偏差が大きくなるに伴いゲインが増大
する関係が予め設定され、入力される駆動系間偏
差に対応するゲイン値をもつて前記スライド高さ
位置指令と当該スライド位置検出手段の検出値と
の各偏差を可変増幅する補償手段と、 を前記１つの所定の駆動系以外の駆動系に具える
ようにしたことを特徴とする油圧プレスのスライ
ド駆動装置。 (2) 前記補償手段には、ゲインが駆動系間偏差
に比例する関係が予め記憶されている請求項(1)
記載の油圧プレスのスライド駆動装置。 (3) 複数本の油圧シリンダと、該複数本の油圧
シリンダが配設されたスライドの各部位のベツド
に対する高さ位置をそれぞれ検出する複数のスラ
イド位置検出手段と、スライド高さ位置指令と前
記複数のスライド位置検出手段の検出値との各偏
差に基づき対応する油圧シリンダをそれぞれ駆動
する複数の駆動系とを具えた油圧プレスのスライ
ド駆動装置において、 前記複数の駆動系のなかの１つの所定の駆動系
で求めた偏差と当該駆動系で求めた偏差との偏差
をそれぞれ求め、該求めた偏差を駆動系間偏差と
して出力する偏差演算手段と、 前記スライド高さ位置指令と当該スライド位置
検出手段の検出値との偏差が所定の基準点以下の
とき第１のゲイン値をとり、該偏差が前記基準点
以上のときこの第１のゲイン値より大きい第２の
ゲイン値をとり、かつこの基準点が前記駆動系間
偏差に略比例した量だけ偏差が小さくなる方向に
シフトする関係が予め記憶され、前記スライド高
さ位置指令と当該スライド位置検出手段の検出値
との各偏差を該偏差に対応する前記関係のゲイン
値で可変増幅する補償手段と、 を前記１つの所定の駆動系以外の駆動系に具える
ようにしたことを特徴とする油圧プレスのスライ
ド駆動装置。[Claims for Utility Model Registration] (1) A plurality of hydraulic cylinders, and a plurality of slide position detection means for detecting the height position of each part of the slide on which the plurality of hydraulic cylinders are disposed relative to the bed. , a slide drive device for a hydraulic press comprising a plurality of drive systems that respectively drive corresponding hydraulic cylinders based on each deviation between a slide height position command and a detection value of the plurality of slide position detection means, a deviation calculation means for calculating the deviation between the deviation calculated in one predetermined drive system among the drive systems and the deviation calculated in that drive system, and outputting the calculated deviation as an inter-drive system deviation; A relationship in which the gain increases as the deviation increases is set in advance, and each deviation between the slide height position command and the detected value of the slide position detection means is determined with a gain value corresponding to the input deviation between the drive systems. A slide drive device for a hydraulic press, characterized in that a drive system other than the one predetermined drive system is provided with compensation means for variably amplifying the drive system. (2) Claim (1), wherein the compensating means stores in advance a relationship in which the gain is proportional to the deviation between the drive systems.
Slide drive device of the hydraulic press described. (3) A plurality of hydraulic cylinders, a plurality of slide position detection means for detecting the height position of each part of the slide on which the plurality of hydraulic cylinders are disposed relative to the bed, and a slide height position command and the above-mentioned A slide drive device for a hydraulic press comprising a plurality of drive systems that respectively drive corresponding hydraulic cylinders based on each deviation from a detection value of a plurality of slide position detection means, wherein one of the plurality of drive systems has a predetermined position. deviation calculation means for calculating the deviation between the deviation calculated in the drive system and the deviation calculated in the drive system, respectively, and outputting the calculated deviation as the deviation between the drive systems; and the slide height position command and the slide position detection. When the deviation from the detected value of the means is below a predetermined reference point, a first gain value is taken; when the deviation is above the reference point, a second gain value larger than this first gain value is taken; A relationship in which the reference point is shifted in a direction in which the deviation is reduced by an amount approximately proportional to the deviation between the drive systems is stored in advance, and each deviation between the slide height position command and the detected value of the slide position detection means is calculated as the deviation. A slide drive device for a hydraulic press, characterized in that a drive system other than the one predetermined drive system is provided with compensation means for variably amplifying with a gain value in the relationship corresponding to the above relationship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13886289U JPH0376700U (en) | 1989-11-30 | 1989-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13886289U JPH0376700U (en) | 1989-11-30 | 1989-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0376700U true JPH0376700U (en) | 1991-07-31 |
Family
ID=31685939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13886289U Pending JPH0376700U (en) | 1989-11-30 | 1989-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0376700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002263900A (en) * | 2001-03-15 | 2002-09-17 | Hoden Seimitsu Kako Kenkyusho Ltd | Press machine |
-
1989
- 1989-11-30 JP JP13886289U patent/JPH0376700U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002263900A (en) * | 2001-03-15 | 2002-09-17 | Hoden Seimitsu Kako Kenkyusho Ltd | Press machine |
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