JPS57142707A - Hydraulic press-down position controlling device - Google Patents
Hydraulic press-down position controlling deviceInfo
- Publication number
- JPS57142707A JPS57142707A JP56027046A JP2704681A JPS57142707A JP S57142707 A JPS57142707 A JP S57142707A JP 56027046 A JP56027046 A JP 56027046A JP 2704681 A JP2704681 A JP 2704681A JP S57142707 A JPS57142707 A JP S57142707A
- Authority
- JP
- Japan
- Prior art keywords
- gate
- signal
- pulse
- press
- outputted
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE:To perform a rolling with high yield, by detecting a dent point in down stroke of a press-down ram at the biting of sheet to remove a returning phenomenon of the down stroke. CONSTITUTION:Gate ON signal is outputted to a gate 33 by detecting that the pulse interval of DOWN pulse becomes longer than a prescribed value after the DOWN pulses are inputted more than a prescribed quantity, by fetching a pulse signal outputted from an incremental-system position detector 40 attached to a press-down ram 15 into a pulse-rate deciding circuit 31. When a pulse from the detector 40 is counted by a counter 32 to be stored in it, the counted value SC is equivalent to the sunk quantity of the press-down ram. The gate 33 is kept in OFF until the circuit 31 outputs a gate ON signal, and an output value SO' of a position-command-value setting device 1 is left as a desired position signal SO, but when the gate ON signal is outputted, the gate is turned ON and SO'-SC becomes the desired position-signal SO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56027046A JPS57142707A (en) | 1981-02-27 | 1981-02-27 | Hydraulic press-down position controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56027046A JPS57142707A (en) | 1981-02-27 | 1981-02-27 | Hydraulic press-down position controlling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57142707A true JPS57142707A (en) | 1982-09-03 |
| JPS6128407B2 JPS6128407B2 (en) | 1986-06-30 |
Family
ID=12210124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56027046A Granted JPS57142707A (en) | 1981-02-27 | 1981-02-27 | Hydraulic press-down position controlling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57142707A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110614279A (en) * | 2019-09-05 | 2019-12-27 | 北京科技大学设计研究院有限公司 | Automatic head and tail pressing control method for single-stand roughing mill |
-
1981
- 1981-02-27 JP JP56027046A patent/JPS57142707A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110614279A (en) * | 2019-09-05 | 2019-12-27 | 北京科技大学设计研究院有限公司 | Automatic head and tail pressing control method for single-stand roughing mill |
| CN110614279B (en) * | 2019-09-05 | 2020-09-18 | 北京科技大学设计研究院有限公司 | Automatic head and tail pressing control method for single-stand roughing mill |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6128407B2 (en) | 1986-06-30 |
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