CN101733301A - Method for controlling pin positioning accuracy by seamless tube extrusion locking pin process - Google Patents
Method for controlling pin positioning accuracy by seamless tube extrusion locking pin process Download PDFInfo
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- CN101733301A CN101733301A CN200910312451A CN200910312451A CN101733301A CN 101733301 A CN101733301 A CN 101733301A CN 200910312451 A CN200910312451 A CN 200910312451A CN 200910312451 A CN200910312451 A CN 200910312451A CN 101733301 A CN101733301 A CN 101733301A
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- plunger shaft
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Abstract
The invention belongs to the field of metallurgic equipment, relates to a method for controlling pin positioning accuracy for pecker locking in an extruder, in particular to a method for controlling the pin positioning accuracy by a seamless tube extruding locking pin process. The method is characterized by comprising a perforation cylinder, a filling valve of a piston cavity, a drain valve of the piston cavity, a filling valve of a piston rod cavity and a drain valve of the piston rod cavity, wherein an oil path of the piston cavity of the perforation cylinder is connected with the filling valve of the piston cavity and the drain valve of the piston valve; an oil path of the piston rod cavity of the perforation cylinder is provided with the filling valve of the piston rod cavity and the drain valve of the piston rod cavity; and the filling valve of the piston cavity of the perforation cylinder, the drain valve of the piston cavity, the filling valve of the piston rod cavity and the drain valve of the piston rod cavity control the perforation cylinder to move forwards and backwards. The invention provides the method for controlling the pin positioning accuracy by the seamless tube extruding locking pin process capable of improving the response speed of the perforation cylinder and the pin positioning accuracy for pecker locking and the inner surface quality of tubes.
Description
Technical field
The invention belongs to field of metallurgical equipment, the fixedly pecker that relates in the extruder is decided the pin accuracy control method, and particularly seamless tubular goods extruding locking pin technology is decided the pin accuracy control method.
Background technology
In field of metallurgical equipment, particularly seamless tubular goods extruding locking pin technology decide pin precision control aspect, and in the existing double-acting extruding machine, locking pin technology is divided into mechanically decides pin and hydraulic pressure is decided the pin dual mode.It is huge that machinery is decided pin mode equipment, decides pin precision height.Original hydraulic pressure is decided the pin mode control modes that chamber before and after the pecker oil cylinder adopted rule of three respectively that adopt more, but because the open and close time of control valve is long, causes control accuracy very poor.
Summary of the invention
The purpose of this invention is to provide a kind of improve the response speed of pecker oil cylinder and fixedly the seamless tubular goods extruding locking pin technology of the inner surface quality of deciding pin precision and tubing of pecker decide the pin accuracy control method.
Technical scheme of the present invention is, seamless tubular goods extruding locking pin technology is decided the pin accuracy control method, it is characterized in that: which comprises at least the perforation oil cylinder, the plunger shaft inlet valve, the plunger shaft tapping valve, rod end chamber inlet valve and rod end chamber tapping valve, on the plunger shaft oil circuit of perforation oil cylinder, be connected with plunger shaft inlet valve and plunger shaft tapping valve, on the rod end chamber oil circuit of perforation oil cylinder, rod end chamber inlet valve and rod end chamber tapping valve are arranged, the forward-reverse of perforation oil cylinder is respectively by perforation oil cylinder piston chamber inlet valve, the plunger shaft tapping valve, rod end chamber inlet valve and the control of rod end chamber tapping valve, when plunger shaft inlet valve and the unlatching of rod end chamber tapping valve, rod end chamber inlet valve and plunger shaft tapping valve are closed, and perforation oil cylinder control punch pin advances; When rod end chamber inlet valve and the unlatching of plunger shaft tapping valve, plunger shaft inlet valve and rod end chamber tapping valve are closed, and perforation oil cylinder control punch pin retreats.
The rod end chamber of described perforation oil cylinder is connected with the high frequency response proportional servo valve, by rod end chamber oil-feed and the oil extraction control of high frequency response proportional servo valve to the perforation oil cylinder, the astern speed of Synchronization Control pecker and pressure ram pace.
Advantage of the present invention is: when fixedly pecker pushes, owing to adopt the ante-chamber oil-feed and the oil extraction of the proportional valve control pecker oil cylinder of high frequency response, the data of the displacement transducer by pecker and pressure ram relatively, the control punch pin moves forward and backward fast fast, make pecker motionless relatively, realize fixedly pecker technology with respect to the position of extruder frame.By adopting the proportioning valve of high frequency response, rapid-action PLC and detecting element, improve the response speed of pecker oil cylinder and fixedly pecker decide the pin precision, reach the control of internal surface of pipe quality.
Description of drawings
The invention will be further described below in conjunction with the embodiment accompanying drawing:
Fig. 1 is an embodiment of the invention structural representation.
Among the figure: 1, perforation oil cylinder; 2, plunger shaft inlet valve; 3, plunger shaft tapping valve; 4, rod end chamber inlet valve; 5, rod end chamber tapping valve; 6, proportional servo valve; 7, guide's oil sources; 8, main pump oil sources.
The specific embodiment
As shown in Figure 1, seamless tubular goods extruding locking pin technology is decided the pin accuracy control method, at least comprise: perforation oil cylinder 1, plunger shaft inlet valve 2, plunger shaft tapping valve 3, rod end chamber inlet valve 4 and rod end chamber tapping valve 5, on the plunger shaft oil circuit of perforation oil cylinder 1, be connected with plunger shaft inlet valve 2 and plunger shaft tapping valve 3, on the rod end chamber oil circuit of perforation oil cylinder 1, rod end chamber inlet valve 4 and rod end chamber tapping valve 5 are arranged, the forward-reverse of perforation oil cylinder 1 is respectively by perforation oil cylinder piston chamber inlet valve 2, plunger shaft tapping valve 3, rod end chamber inlet valve 4 and 5 controls of rod end chamber tapping valve, when main pump oil sources 8 oil, plunger shaft inlet valve 2 and rod end chamber tapping valve 5 are opened, guide's oil sources 7 pressure oil control piston bar chamber inlet valves 4 cut out, plunger shaft tapping valve 3 is closed simultaneously, and perforation oil cylinder 1 control punch pin advances; When main pump oil sources 8 oil, rod end chamber inlet valve 4 and plunger shaft tapping valve 3 are opened, and guide's oil sources 7 pressure oil control piston chamber inlet valves 2 cut out, and rod end chamber tapping valve 5 is closed simultaneously, and perforation oil cylinder 1 control punch pin retreats.When fixing pecker, rod end chamber at perforation oil cylinder 1 is connected with high frequency response proportional servo valve 6, by the rod end chamber oil-feed and the oil extraction control of 6 pairs of perforation of high frequency response proportional servo valve oil cylinder 1, realize the astern speed and the pressure ram pace Synchronization Control of pecker.
Claims (2)
1. seamless tubular goods extruding locking pin technology is decided the pin accuracy control method, it is characterized in that: which comprises at least perforation oil cylinder (1), plunger shaft inlet valve (2), plunger shaft tapping valve (3), rod end chamber inlet valve (4) and rod end chamber tapping valve (5), on the plunger shaft oil circuit of perforation oil cylinder (1), be connected with plunger shaft inlet valve (2) and plunger shaft tapping valve (3), on the rod end chamber oil circuit of perforation oil cylinder (1), rod end chamber inlet valve (4) and rod end chamber tapping valve (5) are arranged, the forward-reverse of perforation oil cylinder (1) is respectively by perforation oil cylinder piston chamber inlet valve (2), plunger shaft tapping valve (3), rod end chamber inlet valve (4) and rod end chamber tapping valve (5) control, when main pump oil sources (8) comes oil, plunger shaft inlet valve (2) and rod end chamber tapping valve (5) are opened, guide's oil sources (7) pressure oil control piston bar chamber inlet valve (4) cuts out, plunger shaft tapping valve (3) is closed simultaneously, and perforation oil cylinder (1) control punch pin advances; When the next oil of main pump oil sources (8), rod end chamber inlet valve (4) and plunger shaft tapping valve (3) are opened, and guide's oil sources (7) pressure oil control piston chamber inlet valve (2) cuts out, and rod end chamber tapping valve (5) is closed simultaneously, and perforation oil cylinder (1) control punch pin retreats.
2. seamless tubular goods extruding locking pin technology according to claim 1 is decided the pin accuracy control method, it is characterized in that: the rod end chamber of described perforation oil cylinder (1) is connected with high frequency response proportional servo valve (6), by rod end chamber oil-feed and the oil extraction control of high frequency response proportional servo valve (6) to perforation oil cylinder (1), the astern speed of Synchronization Control pecker and pressure ram pace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910312451A CN101733301A (en) | 2009-12-28 | 2009-12-28 | Method for controlling pin positioning accuracy by seamless tube extrusion locking pin process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910312451A CN101733301A (en) | 2009-12-28 | 2009-12-28 | Method for controlling pin positioning accuracy by seamless tube extrusion locking pin process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101733301A true CN101733301A (en) | 2010-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910312451A Pending CN101733301A (en) | 2009-12-28 | 2009-12-28 | Method for controlling pin positioning accuracy by seamless tube extrusion locking pin process |
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| Country | Link |
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| CN (1) | CN101733301A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139291A (en) * | 2011-03-28 | 2011-08-03 | 中国重型机械研究院有限公司 | Synchronous control system of extruding cylinder and extruding plug for reverse extruder |
-
2009
- 2009-12-28 CN CN200910312451A patent/CN101733301A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139291A (en) * | 2011-03-28 | 2011-08-03 | 中国重型机械研究院有限公司 | Synchronous control system of extruding cylinder and extruding plug for reverse extruder |
| CN102139291B (en) * | 2011-03-28 | 2013-03-27 | 中国重型机械研究院有限公司 | Synchronous control system of extruding cylinder and extruding plug for reverse extruder |
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Open date: 20100616 |