JPS56109905A - Disturbance eliminating method in cylinder synchronizing system - Google Patents
Disturbance eliminating method in cylinder synchronizing systemInfo
- Publication number
- JPS56109905A JPS56109905A JP876980A JP876980A JPS56109905A JP S56109905 A JPS56109905 A JP S56109905A JP 876980 A JP876980 A JP 876980A JP 876980 A JP876980 A JP 876980A JP S56109905 A JPS56109905 A JP S56109905A
- Authority
- JP
- Japan
- Prior art keywords
- cylinders
- cylinder
- difference
- strokes
- response
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE: To enable the synchronous control to be stable in the method for eliminating the disturbance in the synchronizing system with which three cylinders are synchronized, by inputting the feedback quantity corresponding to the stroke difference between the central cylinder and the other cylinder to comparing parts of the outside cylinders of one series of the hydraulic cylinders.
CONSTITUTION: In the case an excessive load 28 is actuated by the simultaneous operation of the three cylinders 2W4 via a movable member 1, all cylinders 2W4 operate uniformly at the time of starting. However, the strokes of the cylinders 2 and 3 whose loadings are light becomes larger than the stroke of the cylinder 4, and the inclination is yielded in the movable emeber 1. Therefore, the difference between the strokes of the cylinders 2 and 3 are sensed by sensing parts 20 and 21 and sent out via an amplifier 23, compared with a reference value in a comparing part 15. Thus the speed of the cylinder 3 becomes slower in response to the difference. The cylinder 4 is likewise driven fast in response to the difference between the strokes of the cylinders 4 and 2. Furthermore, the cylinder 2 performes the control through the comparator 14 in response to the outputs of amplifiers 23 and 24.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP876980A JPS5833404B2 (en) | 1980-01-30 | 1980-01-30 | Disturbance removal method in cylinder synchronization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP876980A JPS5833404B2 (en) | 1980-01-30 | 1980-01-30 | Disturbance removal method in cylinder synchronization system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56109905A true JPS56109905A (en) | 1981-08-31 |
| JPS5833404B2 JPS5833404B2 (en) | 1983-07-19 |
Family
ID=11702099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP876980A Expired JPS5833404B2 (en) | 1980-01-30 | 1980-01-30 | Disturbance removal method in cylinder synchronization system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5833404B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0597468A1 (en) * | 1992-11-12 | 1994-05-18 | Sms Schloemann-Siemag Aktiengesellschaft | Hydraulic feeding drive for flying upsetting presses |
| FR2705052A1 (en) * | 1993-05-10 | 1994-11-18 | Treillet Jean | Balancing system for press brake with 3 or more cylinders. |
| JPH07196294A (en) * | 1993-12-28 | 1995-08-01 | Ebara Corp | Lift device for movable floor |
-
1980
- 1980-01-30 JP JP876980A patent/JPS5833404B2/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0597468A1 (en) * | 1992-11-12 | 1994-05-18 | Sms Schloemann-Siemag Aktiengesellschaft | Hydraulic feeding drive for flying upsetting presses |
| FR2705052A1 (en) * | 1993-05-10 | 1994-11-18 | Treillet Jean | Balancing system for press brake with 3 or more cylinders. |
| WO1994026510A1 (en) * | 1993-05-10 | 1994-11-24 | Jean Treillet | Balancing system for a bending press |
| JPH07196294A (en) * | 1993-12-28 | 1995-08-01 | Ebara Corp | Lift device for movable floor |
| JP2617874B2 (en) * | 1993-12-28 | 1997-06-04 | 株式会社荏原製作所 | Moving floor lifting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5833404B2 (en) | 1983-07-19 |
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