CN103042304A - Servo hydraulic system of friction welding machine - Google Patents
Servo hydraulic system of friction welding machine Download PDFInfo
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- CN103042304A CN103042304A CN2012105826841A CN201210582684A CN103042304A CN 103042304 A CN103042304 A CN 103042304A CN 2012105826841 A CN2012105826841 A CN 2012105826841A CN 201210582684 A CN201210582684 A CN 201210582684A CN 103042304 A CN103042304 A CN 103042304A
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Abstract
The invention aims to provide a servo hydraulic system of a friction welding machine. The servo hydraulic system comprises a servo motor, a hydraulic pump, an electromagnetic directional valve and a main oil cylinder, wherein the main cylinder and the electromagnetic directional valve are mutually connected, a P end of the electromagnetic directional valve is connected to an oil tank via the hydraulic pump, the hydraulic pump and the servo motor are mutually connected, and a T end of the electromagnetic directional valve is connected to the oil tank. By adjusting pressure and flow quantity via a servo controller, storage of multiple groups of parameters and welding of products in multiple specifications are facilitated, by comparing feedback of a pressure sensor with parameters set by the servo controller, pressure closed-loop control of a hydraulic system of the friction welding machine is realized, utilization power of the system is reduced, energy consumption is saved, the hydraulic system is simplified, stability of the hydraulic system is improved, hidden fault danger is reduced, and purpose of the servo hydraulic system of the friction welding machine is achieved.
Description
Technical field
The present invention relates to a kind of hydraulic system, particularly a kind of servo hydraulic system that is applicable to friction-welding machine.
Background technology
The welding process of friction-welding machine mainly is that the work by master cylinder realizes needed 2 grades or 3 grades of pressurizations in the welding, and the F.F. of workbench, slow-motion and retreat, and the performance that offers the hydraulic system of master cylinder operation power directly has influence on the quality of weld parts.、
Present friction-welding machine hydraulic system mainly is comprised of Hydraulic Elements such as motor, oil pump, pressure-control valve, flow control valve and reversal valves.As shown in Figure 1, the operation principle of existing friction-welding machine hydraulic system is: drive hydraulic pump 2 by motor 1, for system by pressure and flow; Realize friction pressure and upsetting force by the break-make of magnetic valve 3 and magnetic valve 5 and the adjustment of overflow valve 4 and overflow valve 6; Fast forward speed can only lean on the oil pump flow of preliminary election to realize, and is immutable; And work speed is regulated by flow speed control valve 9, controls master cylinder 10 by solenoid directional control valve 7 and realizes advancing or retreating.
This system reaches to produce in the preparation in the course of the work needs motor ceaselessly to turn round, and produces at work a large amount of heats and consumes simultaneously a large amount of energy.Because hydraulic system constantly oil temperature rises, and a plurality of Hydraulic Elements participation work, therefore cause the unstable of the pressure of whole system and flow, also affected the welding quality that needs soldering part simultaneously.Take the 20L constant displacement pump as example, maximum working pressure 10Mp, required motor power is 4KW approximately.
Therefore, need especially a kind of servo hydraulic system of friction-welding machine, to solve the above-mentioned existing problem that exists.
Summary of the invention
The object of the present invention is to provide a kind of servo hydraulic system of friction-welding machine, for the deficiencies in the prior art, the control office that has changed existing friction-welding machine hydraulic system is sex-limited, has effectively solved complexity, welding parameter closed-loop control, the many bond pads Parameter storage that oil temperature is too high in the use procedure of friction-welding machine hydraulic system, Hydraulic Elements keep in repair and has called the problem excessive with power consumption.
Technical problem solved by the invention can realize by the following technical solutions:
A kind of servo hydraulic system of friction-welding machine, it is characterized in that, it comprises servomotor, hydraulic pump, solenoid directional control valve and master cylinder, described master cylinder and described solenoid directional control valve are connected to each other, the P end of described solenoid directional control valve is connected to fuel tank by hydraulic pump, described hydraulic pump and described servomotor are connected to each other, and the T end of described solenoid directional control valve is connected to fuel tank.
In one embodiment of the invention, described servomotor is connected with for rotating speed and the output torque of control servomotor and controls the flow of hydraulic pump output and the servo controller of pressure with realization.
In one embodiment of the invention, be connected with pressure sensor between the P of described solenoid directional control valve end and the described hydraulic pump.
In one embodiment of the invention, also be connected with Pressure gauge on the described hydraulic pump.
In one embodiment of the invention, described hydraulic pump is connected with described fuel tank by an oil cleaner screen.
In one embodiment of the invention, the T of described solenoid directional control valve end is connected with described fuel tank by a return filter.
The servo hydraulic system of friction-welding machine of the present invention, compared with prior art, adjust pressure and flow by servo controller, be convenient to the storage of many bond pads parameter and the welding of many specification products, the parameter that feedback and the servo controller by pressure sensor sets is compared, and then the pressure closed loop of realizing the friction-welding machine hydraulic system is controlled, use power and the energy efficient of reduction system are simplified hydraulic system, improve the stability of hydraulic system, Reduction of failure hidden danger realizes purpose of the present invention.
Characteristics of the present invention can be consulted the detailed description of the graphic and following better embodiment of this case and be obtained to be well understood to.
Description of drawings
Fig. 1 is the structural representation of existing hydraulic system;
Fig. 2 is the structural representation of the servo hydraulic system of friction-welding machine of the present invention.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 2, the servo hydraulic system of friction-welding machine of the present invention, it comprises servomotor 100, hydraulic pump 200, solenoid directional control valve 300 and master cylinder 400, described master cylinder 400 is connected to each other with described solenoid directional control valve 300, the P end of described solenoid directional control valve 300 is connected to fuel tank 500 by hydraulic pump 200, described hydraulic pump 200 is connected to each other with described servomotor 100, and the T end of described solenoid directional control valve 300 is connected to fuel tank 500.
In the present invention, described servomotor 100 is connected with servo controller 600; Be connected with pressure sensor 700 between the P end of described solenoid directional control valve 300 and the described hydraulic pump 200; Also be connected with Pressure gauge 800 on the described hydraulic pump 200; Described hydraulic pump 200 is connected with described fuel tank 500 by an oil cleaner screen 510; The T end of described solenoid directional control valve 300 is connected with described fuel tank 500 by a return filter 520.
The servo hydraulic system of friction-welding machine of the present invention is controlled rotating speed and the output torque of servomotor 100 by servo controller 600, in order to realize flow and the pressure of 200 outputs of control hydraulic pump; Feedback data by pressure sensor 700 and servo controller 600 predefined data are compared and are revised to obtain stable output pressure and a flow.
In welding process, the parameter by servo controller 600 changes can realize that multiple pressure makes up to finish multiple pressure and fast forward speed, work speed and the upset speeds such as needed F.F. pressure, friction pressure and upsetting force in the friction welding course of work.
The servo hydraulic system of friction-welding machine of the present invention has following advantage:
A, under equal condition of work, if guarantee the fast forward speed of master cylinder, common hydraulic system oil pump need to configure the flow of 20L, will control flow by flow speed control valve when work feed, and unnecessary flow needs off-load to fall, and has so just caused the waste of power.And no matter be duty or holding state, because hydraulic electric motor is all ceaselessly turning round, system easily generates heat, and brings unstability to work; And in the servo hydraulic system of friction-welding machine of the present invention, only need the oil pump of configuration 10L, and owing to only needing very little pressure during the master cylinder F.F., improve the flow of oil pump by the rotating speed that changes motor, make the oil pump of 10L can reach the above flow of 20L;
B, because the particularity of friction-welding machine work, on power configuration, can also utilize the strong characteristics of overload capacity of servomotor; The friction-welding machine master cylinder at first is F.F. at work, at this moment need the large flow of low-pressure (speed 55-100mm/ second), then transferring the worker to advances, at this moment needing stable middle pressure and lower flow (0.2-2mm/ second), then is upset, and at this moment moment needs higher pressure and flow, this time is in 1 second, follow by the upset pressurize, at this moment need higher pressure, and flow almost nil (time at 1-15 about second);
According to this welding characteristic, we select servo hydraulic system, are complementary with job requirement.(take the 10L oil pump as example)
F.F.-motor speed 2000r/min, oil pump output flow 20L; If pressure setting 2Mp, required motor power is 1KW approximately.
The worker advances-motor speed 100r/min, oil pump output flow 1L; If pressure setting 7Mp, required motor power is not more than 1KW.
Upset-motor speed 1000r/min, oil pump output flow 10L; If pressure setting 10Mp, required motor power is 2KW approximately.
Upset pressurize-motor speed is less than 100r/min, flow at this moment mainly compensate oil pump in let out; Such as pressure setting 10MP, required motor power is not more than 1KW.
According to above working condition, the power consumption that needs when upset is maximum.Because upset time only had about 1 second, at this moment we select the servomotor of 2KW to get final product.Because servomotor has the strong characteristics of overload capacity (torque capacity can reach 300%), select the servomotor of 1.5KW can satisfy work requirements fully; Friction-welding machine has the time master cylinder of 30%-50% not work in the single do action at work simultaneously, and at this moment common hydraulic system motor (4KW) is to turn always, and the motor of servo hydraulic system has the time of 30%-50% to stop, so the whole energy consumption of servo hydraulic system only has below 35% of common hydraulic system energy consumption;
C, the power that passes through the reduction motor and the intermittent work of servomotor, the common heating situation of hydraulic system has not had, because oil temperature is under control, is that the work of whole servo hydraulic system more tends towards stability;
D, by hydraulic servo control, original 50% above Hydraulic Elements have been lacked in letter, and potential faults is reduced;
E, by parameter adjustment and storage, to the adjustment of hydraulic system, only need access in use corresponding parameter can normally produce when having saved each replacing product;
The feedback ratio of f, the setting parameter by servo controller and pressure sensor pair realizes the hydraulic system closed-loop control, and then obtains stable operating pressure and the needed feed speed of master cylinder that this is that common hydraulic system can't be accomplished.
Above demonstration and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. the servo hydraulic system of a friction-welding machine, it is characterized in that, it comprises servomotor, hydraulic pump, solenoid directional control valve and master cylinder, described master cylinder and described solenoid directional control valve are connected to each other, the P end of described solenoid directional control valve is connected to fuel tank by hydraulic pump, described hydraulic pump and described servomotor are connected to each other, and the T end of described solenoid directional control valve is connected to fuel tank.
2. the servo hydraulic system of friction-welding machine as claimed in claim 1 is characterized in that, described servomotor is connected with for the rotating speed of control servomotor and output torque and controls the flow of hydraulic pump output and the servo controller of pressure with realization.
3. the servo hydraulic system of friction-welding machine as claimed in claim 1 is characterized in that, is connected with pressure sensor between the P end of described solenoid directional control valve and the described hydraulic pump.
4. the servo hydraulic system of friction-welding machine as claimed in claim 1 is characterized in that, also is connected with Pressure gauge on the described hydraulic pump.
5. the servo hydraulic system of friction-welding machine as claimed in claim 1 is characterized in that, described hydraulic pump is connected with described fuel tank by an oil cleaner screen.
6. the servo hydraulic system of friction-welding machine as claimed in claim 1 is characterized in that, the T end of described solenoid directional control valve is connected with described fuel tank by a return filter.
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| CN2012105826841A CN103042304A (en) | 2012-12-28 | 2012-12-28 | Servo hydraulic system of friction welding machine |
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| CN2012105826841A CN103042304A (en) | 2012-12-28 | 2012-12-28 | Servo hydraulic system of friction welding machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414741A (en) * | 2016-01-08 | 2016-03-23 | 重庆德蚨乐机械制造有限公司 | Friction welding floating zero system and axial and radial welding control method thereof |
| CN105665914A (en) * | 2016-03-03 | 2016-06-15 | 芜湖日升重型机床有限公司 | Hydraulic system of friction welding machine tool |
| US20160228978A1 (en) * | 2013-09-24 | 2016-08-11 | Kuka Industries Gmbh | Pressure welding device and pressure welding method using an advance drive designed as an electrohydraulic direct drive |
| 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 |
| CN107061396A (en) * | 2017-04-27 | 2017-08-18 | 机械科学研究院哈尔滨焊接研究所 | Large-tonnage inertia friction welder fluid power system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160228978A1 (en) * | 2013-09-24 | 2016-08-11 | Kuka Industries Gmbh | Pressure welding device and pressure welding method using an advance drive designed as an electrohydraulic direct drive |
| US10232465B2 (en) * | 2013-09-24 | 2019-03-19 | Kuka Industries Gmbh | Pressure welding device and pressure welding method using an advance drive designed as an electrohydraulic direct drive |
| CN105414741A (en) * | 2016-01-08 | 2016-03-23 | 重庆德蚨乐机械制造有限公司 | Friction welding floating zero system and axial and radial welding control method thereof |
| CN105665914A (en) * | 2016-03-03 | 2016-06-15 | 芜湖日升重型机床有限公司 | Hydraulic system of friction welding machine tool |
| 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 |
| CN107061396A (en) * | 2017-04-27 | 2017-08-18 | 机械科学研究院哈尔滨焊接研究所 | Large-tonnage 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 |
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Application publication date: 20130417 |