CN101927401A - Welder device and sliding table control method - Google Patents
Welder device and sliding table control method Download PDFInfo
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- CN101927401A CN101927401A CN2009100537345A CN200910053734A CN101927401A CN 101927401 A CN101927401 A CN 101927401A CN 2009100537345 A CN2009100537345 A CN 2009100537345A CN 200910053734 A CN200910053734 A CN 200910053734A CN 101927401 A CN101927401 A CN 101927401A
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Abstract
The invention discloses a welder device and a sliding table control method. The method fulfills the purpose of controlling the motion direction, speed and axial pressure of a sliding table by adjusting an electro-hydraulic proportional reversing speed control valve and an electro-hydraulic proportional overflow valve; and the closed-loop control of the whole device is finished by a computer and comprises acquisition, comparison and control of signals, setting, printing and storage of parameters and the like. The device comprises a pressure sensor connected on an oil cylinder, an A/D conversion board, a D/A conversion board and a V/I converter, which are all electrically connected with the electro-hydraulic proportional reversing speed control valve and the electro-hydraulic proportional overflow valve to form the closed-loop control of the computer. Because the closed-loop control of the computer is adopted, the device can effectively adjust oil temperature change, environmental temperature change, welding material, surface state fluctuation and the like in real time. The device has the advantages of convenient parameter adjustment, high reliability, good system stability, good adaptability to an oil source and low fault rate.
Description
Technical field
The present invention relates to a kind of friction-welding machine sliding table control method and device.
Background technology
With reference to Fig. 4, friction-welding machine is a kind of mechanical-electrical-hydraulic integration equipment, the domestic hydraulic pressure force application system of being made up of switching control pilots such as electro-hydraulic reversing valve, flow speed control valve, electromagnetic relief valves that adopts is at present mostly controlled the slide unit direction of motion, speed and the axial compressive force of friction-welding machine.Mainly finish control jointly with 2 pressure-control valves, 2 flow control valves, 3 directional control valves.In friction welding process, these 7 frequent alternating movements of valve, the probability that breaks down is big.In addition, this hydraulic pressure force application system can only make the axial compressive force parameter be the step evolution variation, can't carry out closed-loop control, can not be to the disturbing factor in the welding process, as the fluctuation of the variation of oil temperature, variation of ambient temperature, welding material and surface state etc., carry out effectively regulating in real time.And parameter such as pressure, flow velocity is regulated inconvenience by manual adjustments, and reappearance is relatively poor.
The friction-welding machine force application system of MTI company that the U.S. is famous and German KUKA company generally adopts electrohydraulic servo-controlling system.Domesticly on friction-welding machine, also carried out the electrohydraulic servo system transformation, but in actual production process, find, though electrohydraulic servo system rapid dynamic response speed, controllability is good, but working environment is required high, particularly the cleannes type degree of fluid medium requires very harsh, make manufacturing cost and maintenance cost high, and in material, the surface treatment quality, also there is deficiency to a certain degree in system cleaning aspect, cause in the electrohydraulic servo system work of critical component electrohydraulic servo valve often malfunctioning, thereby make friction-welding machine electrohydraulic servo system cisco unity malfunction, directly hindered computer controlled application in friction welding is produced.
Summary of the invention
The purpose of this invention is to provide a kind of friction-welding machine sliding table control method and device,, reach the direction of motion, speed and the axial compressive force of control slide unit 1 by computer closed loop control.
A kind of friction-welding machine sliding table control method, start oil pump 4, power up for simultaneously the electromagnet of 2/2-way reversal valve 6, make whole device be in stress state, adjust overflow valve 7, make in the friction-welding machine welding process, to remain unchanged the upstream pressure of electricity liquid ratio relief valve 3, it is characterized in that:, can control the direction of motion, speed and the axial compressive force of slide unit 1 by regulating electric-hydraulic proportion commutation flow speed control valve 2 and proportional pressure control valve 3.
Slide unit 1 movement velocity is by given current value adjustment on the electric-hydraulic proportion commutation flow speed control valve 2.
The friction pressure of friction-welding machine, upsetting force, all the oil cylinder 14 rodless cavity pressure of being surveyed according to pressure sensor 13 and the difference of setting value are constantly adjusted the given electric current of electricity liquid ratio relief valve 3 automatically and are controlled.
The closed-loop control of whole device is finished by computer 11, comprises collection, the comparison and control of signal, the setting, printing and storage of parameter etc.
Summary of the invention
The friction-welding machine slide unit control device designed according to said method, comprise slide unit 1, oil cylinder 14, oil pump 4, fuel tank 5,2/2-way reversal valve 6, overflow valve 7, it is characterized in that: also comprise the pressure sensor 13 that is connected on the oil cylinder 14, pressure sensor 13 is connected to computer 11 through A/D change-over panel 12, computer 11 is through D/A change-over panel 10, the one V/I converter 8 and the 2nd V/I converter 9 are electrically connected with electric-hydraulic proportion commutation flow speed control valve 2 and electricity liquid ratio relief valve 3, form computer closed loop control, the delivery outlet of electric-hydraulic proportion commutation flow speed control valve 2 connects the rodless cavity and the rod chamber of oil cylinder 14 respectively, and pressure introduction port is connected with oil pump 4 by electricity liquid ratio relief valve 3.
Available electro-hydraulic proportional reducing valve 15 replaces electricity liquid ratio relief valve 3.
Available three position four-way directional control valve 17 replaces electric-hydraulic proportion commutation flow speed control valve 2, increases an electrohydraulic proportional velocity regulating valve 16 between three position four-way directional control valve 17 and electricity liquid ratio relief valve 3.
The present invention's advantage compared to existing technology is: owing to 7 valves that replaced prior art with electric-hydraulic proportion commutation flow speed control valve 2 and electricity liquid ratio relief valve 3, so, fault rate is reduced.Owing to adopt computer closed loop control, can be to the fluctuation of the variation of oil temperature, variation of ambient temperature, welding material and surface state etc., carry out effectively regulating in real time.Parameter is easy to adjust, the reliability height, and the stability of a system is good, and is good to oil sources adaptability.
Description of drawings
Fig. 1 is a friction-welding machine slide unit control device schematic diagram;
Fig. 2 is second kind of embodiment schematic diagram of friction-welding machine slide unit control device;
Fig. 3 is the third embodiment schematic diagram of friction-welding machine slide unit control device;
Fig. 4 is a background technology friction-welding machine switching control pilot type slide unit control device schematic diagram.
The specific embodiment
With reference to Fig. 1, the friction welding preparatory stage, give electricity liquid ratio relief valve 3 with the big electric current of full scale, make it be in cut-off state, at this moment, electric-hydraulic proportion commutation flow speed control valve 2 both sides proportion electro-magnets all do not power up, also be in cut-off state, the electromagnet of 2/2-way reversal valve 6 does not power up yet, and makes whole device be in unloading condition, start oil pump 4, preparation is finished.
Power up for the electromagnet of 2/2-way reversal valve 6, make whole device be in stress state.Adjust overflow valve 7, make in the friction-welding machine welding process, to remain unchanged the upstream pressure of electricity liquid ratio relief valve 3.
In the welding process, when centre tool system clamps, the energising of electric-hydraulic proportion commutation flow speed control valve 2B side proportion electro-magnet, pressure oil enters the rodless cavity on oil cylinder 14 right sides by electric-hydraulic proportion commutation flow speed control valve 2, and slide unit 1 is motion to the left fast.Slide unit 1 movement velocity is by given current value adjustment on the electric-hydraulic proportion commutation flow speed control valve 2B side proportion electro-magnet.
When slide unit enters worker's carry when putting, the electric current on the electricity liquid ratio relief valve 3 is adjusted to the pairing current value of friction pressure, and reduces the current value of electric-hydraulic proportion commutation flow speed control valve 2B side proportion electro-magnet, slide unit 1 is moved to the left with suitable low speed.
After the contact of the both sides of friction welding workpiece, engaging friction pressure closed loop state of a control, the oil cylinder 14 rodless cavity pressure that computer 11 is surveyed according to pressure sensor 13 and the difference of setting value, constantly adjust the given electric current of electricity liquid ratio relief valve 3 automatically, oil cylinder 14 rodless cavity pressure and friction pressure setting value is consistent.
After fraction time reaches, increase the current value of electric-hydraulic proportion commutation flow speed control valve 2B side proportion electro-magnet, electric current on the electricity liquid ratio relief valve 3 is adjusted to the pairing current value of upsetting force, enter upsetting force closed-loop control state, the oil cylinder 14 rodless cavity pressure that computer 11 is surveyed according to pressure sensor 13 and the difference of setting value, constantly adjust the given electric current of electricity liquid ratio relief valve 3 automatically, oil cylinder 14 rodless cavity pressure and upsetting force setting value is consistent.
After the dwell time of setting reached, computer 11 made oil cylinder 14 no bar releases by reducing the current value on the electricity liquid ratio relief valve 3.
Electric-hydraulic proportion commutation flow speed control valve 2B side proportion electro-magnet dead electricity, the energising of 2A side proportion electro-magnet, pressure oil enters the rod chamber of oil cylinder 14 by electric-hydraulic proportion commutation flow speed control valve 2, and slide unit 1 is motion to the right fast.Slide unit 1 movement velocity is by given current value adjustment on the electric-hydraulic proportion commutation flow speed control valve 2.
After slide unit moved to original position, electric-hydraulic proportion commutation flow speed control valve 2 dead electricity were in cut-off state; 2/2-way reversal valve 6 dead electricity make system be in unloading condition, finish a weld cycle.By D/A conversion, V/I conversion back control, the data that pressure sensor 13 is surveyed are passed to computer 11 by the conversion of A/D change-over panel 12 by computer 11 for electric-hydraulic proportion commutation flow speed control valve 2 and electricity liquid ratio relief valve 3.
Fig. 2 is second kind of embodiment of friction-welding machine slide unit control device, and the slide unit direction of motion is by electro-hydraulic proportional reducing valve 15 controls.Its effect is with electricity liquid ratio relief valve 3.
Fig. 3 is the third embodiment of friction-welding machine slide unit control device, and the slide unit travel direction is by common three position four-way directional control valve 17 controls, and the speed of slide unit motion is by electrohydraulic proportional velocity regulating valve 16 controls.Though increased an electrohydraulic proportional velocity regulating valve 16, the speed adjustable range is than wide with electric-hydraulic proportion commutation flow speed control valve 2 separately.
Application Example:
Slide unit 1 is being driven by oil cylinder 14 and is moving back and forth.Electric-hydraulic proportion commutation flow speed control valve 2 is by oil cylinder 14 control slide unit 1 direction of motion and speed.Electricity liquid ratio relief valve 3 control oil cylinders 14 rodless cavity pressure.Oil pump 4 provides the pressure of hydraulic system.Fuel tank 5 provides system required hydraulic oil.Whether 2/2-way reversal valve 6 control systems build pressure.Overflow valve 7 is adjusted hydraulic system pressure.The one V/I parallel operation 8 is converted to current signal control electricity liquid ratio relief valve 3, the two V/I converters 9 with voltage signal voltage signal is converted to current signal control electric-hydraulic proportion commutation flow speed control valve 2.D/A change-over panel 10 provides digital quantity with computer 11 and is converted into analog quantity and controls a V/I converter 8 and the 2nd V/I converter 9.Pressure sensor 13 detects oil cylinder 14 rodless cavity pressure, and the analog signal conversion that A/D change-over panel 12 provides pressure sensor 13 is that digital quantity is handed over Computer Processing.Computer 11 is finished the comparison and control of signal, can carry out functions such as parameter setting, printing, storage.This device can be realized in the friction welding process closed-loop control of axial pressure, the open loop proportion control of slide unit feed speed, the axial compressive force control accuracy can reach ± and 2%.
The device designed according to the friction-welding machine sliding table control method comprises slide unit 1, oil cylinder 14, pressure sensor 13, electric-hydraulic proportion commutation flow speed control valve 2, electricity liquid ratio relief valve 3, oil pump 4, fuel tank 5,2/2-way reversal valve 6, overflow valve 7, two V/I converters---a V/I converter 8 and the 2nd V/I converter 9, D/A change-over panel 10, A/D change-over panel 12, computers 11.Slide unit 1 is connected on the piston rod of oil cylinder 14, the reciprocating motion of slide unit 1 is by the oil pressure control of the rodless cavity and the rod chamber of oil cylinder 14, the delivery outlet of electric-hydraulic proportion commutation flow speed control valve 2 connects the rodless cavity and the rod chamber of oil cylinder 14 respectively, pressure introduction port is connected with oil pump 4 by electricity liquid ratio relief valve 3, oil pump 4 provides the pressure of fluid pressure line, 2/2-way reversal valve 6 building of control fluid pressure line are pressed and release, and overflow valve 7 is used for adjusting the pressure of fluid pressure line.The one V/I converter 8 is electrically connected with D/A change-over panel 10, and be electrically connected with electricity liquid ratio relief valve 3, by a V/I converter 8 voltage signal is converted to current signal control electricity liquid ratio relief valve 3, the 2nd V/I converter 9 is electrically connected with D/A change-over panel 10, and is electrically connected with electric-hydraulic proportion commutation flow speed control valve 2, the 2nd V/I converter 9 is converted to the current signal control electric-hydraulic proportion flow speed control valve 2 that commutates with voltage signal.D/A change-over panel 10 is converted into analog quantity with computer 11 to digital quantity and controls a V/I converter 8 and the 2nd V/I converter 9.Pressure sensor 13 detects oil cylinder 14 rodless cavity pressure, and the analog signal conversion that A/D change-over panel 12 provides pressure sensor 13 is that digital quantity is handed over Computer Processing.Computer 11 is finished the comparison and control of signal, can carry out parameter setting, printing, storage etc.
More than disclosed only be several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, all should drop in protection scope of the present invention.
Claims (5)
1. welder device and sliding table control method is characterized in that, comprise regulating electric-hydraulic proportion commutation flow speed control valve that pressure sensor and proportional pressure control valve can be controlled the direction of motion, speed and the axial compressive force of slide unit.
2. welder device as claimed in claim 1 and sliding table control method is characterized in that, the slide unit movement velocity is by given current value adjustment on the electric-hydraulic proportion commutation flow speed control valve.
3. welder device as claimed in claim 1 and sliding table control method, it is characterized in that, the friction pressure of friction-welding machine and upsetting force, all the oil cylinder rodless cavity pressure of surveying according to pressure sensor and the difference of setting value are constantly adjusted the given electric current of electricity liquid ratio relief valve automatically and are controlled.
4. welder device as claimed in claim 1 and sliding table control method is characterized in that the closed-loop control of whole device is finished by computer, comprise collection, the comparison and control of signal, the setting, printing and storage of parameter etc.
5. welder device as claimed in claim 4 and sliding table control method is characterized in that, available electro-hydraulic proportional reducing valve replaces electricity liquid ratio relief valve.Available three position four-way directional control valve replaces electric-hydraulic proportion commutation flow speed control valve, increases an electrohydraulic proportional velocity regulating valve between three position four-way directional control valve and electricity liquid ratio relief valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100537345A CN101927401A (en) | 2009-06-25 | 2009-06-25 | Welder device and sliding table control method |
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| CN2009100537345A CN101927401A (en) | 2009-06-25 | 2009-06-25 | Welder device and sliding table control method |
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| CN101927401A true CN101927401A (en) | 2010-12-29 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922740A (en) * | 2012-10-19 | 2013-02-13 | 安徽工程大学 | Feeding clearance control method and device of seamless welding machine |
| CN102966632A (en) * | 2012-11-16 | 2013-03-13 | 无锡汇虹机械制造有限公司 | Energy-saving consumption reduction method of hydraulic system of friction welding machine |
| CN103042304A (en) * | 2012-12-28 | 2013-04-17 | 上海胜春机械有限公司 | Servo hydraulic system of friction welding machine |
| CN103343761A (en) * | 2013-07-19 | 2013-10-09 | 南京工业大学 | Hydraulic loading device |
| CN103573728A (en) * | 2013-11-13 | 2014-02-12 | 中联重科股份有限公司 | Device, method and system for controlling hydraulic oil cylinder and engineering machine |
| CN106151130A (en) * | 2015-04-03 | 2016-11-23 | 张国庆 | Proportional hydraulic oil circuit control, proportional hydraulic steam progressively decreasing apparatus and control method thereof |
| CN106475662A (en) * | 2016-12-23 | 2017-03-08 | 重庆市江津区前进焊接材料厂 | A kind of control system of Intelligent welding device |
| CN107013534A (en) * | 2017-04-27 | 2017-08-04 | 机械科学研究院哈尔滨焊接研究所 | Aero-engine key component inertia friction welder fluid power system |
| CN109676239A (en) * | 2019-01-28 | 2019-04-26 | 哈尔滨焊接研究院有限公司 | Welding force closed-loop control and the interactive friction welding apparatuses of opened loop control and its friction-welding technique |
-
2009
- 2009-06-25 CN CN2009100537345A patent/CN101927401A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922740A (en) * | 2012-10-19 | 2013-02-13 | 安徽工程大学 | Feeding clearance control method and device of seamless welding machine |
| CN102966632A (en) * | 2012-11-16 | 2013-03-13 | 无锡汇虹机械制造有限公司 | Energy-saving consumption reduction method of hydraulic system of friction welding machine |
| CN103042304A (en) * | 2012-12-28 | 2013-04-17 | 上海胜春机械有限公司 | Servo hydraulic system of friction welding machine |
| CN103343761A (en) * | 2013-07-19 | 2013-10-09 | 南京工业大学 | Hydraulic loading device |
| CN103343761B (en) * | 2013-07-19 | 2015-09-02 | 南京工业大学 | A kind of hydraulic loading device |
| CN103573728A (en) * | 2013-11-13 | 2014-02-12 | 中联重科股份有限公司 | Device, method and system for controlling hydraulic oil cylinder and engineering machine |
| CN106151130A (en) * | 2015-04-03 | 2016-11-23 | 张国庆 | Proportional hydraulic oil circuit control, proportional hydraulic steam progressively decreasing apparatus and control method thereof |
| CN106475662A (en) * | 2016-12-23 | 2017-03-08 | 重庆市江津区前进焊接材料厂 | A kind of control system of Intelligent welding device |
| CN106475662B (en) * | 2016-12-23 | 2017-12-01 | 重庆市江津区前进焊接材料厂 | A kind of control system of Intelligent welding device |
| CN107013534A (en) * | 2017-04-27 | 2017-08-04 | 机械科学研究院哈尔滨焊接研究所 | Aero-engine key component inertia friction welder fluid power system |
| CN107013534B (en) * | 2017-04-27 | 2019-10-01 | 机械科学研究院哈尔滨焊接研究所 | Aero-engine key component inertia friction welder fluid power system |
| CN109676239A (en) * | 2019-01-28 | 2019-04-26 | 哈尔滨焊接研究院有限公司 | Welding force closed-loop control and the interactive friction welding apparatuses of opened loop control and its friction-welding technique |
| CN109676239B (en) * | 2019-01-28 | 2024-02-02 | 中国机械总院集团哈尔滨焊接研究所有限公司 | Friction welding device with interaction of welding force closed-loop control and open-loop control and friction welding process thereof |
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Application publication date: 20101229 |