CN100571956C - Friction welding machine proportion variable hydraulic control system - Google Patents
Friction welding machine proportion variable hydraulic control system Download PDFInfo
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- CN100571956C CN100571956C CNB2007101884512A CN200710188451A CN100571956C CN 100571956 C CN100571956 C CN 100571956C CN B2007101884512 A CNB2007101884512 A CN B2007101884512A CN 200710188451 A CN200710188451 A CN 200710188451A CN 100571956 C CN100571956 C CN 100571956C
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Abstract
The invention discloses a kind of friction-welding machine hydraulic control system, comprise two position and four-way reversing valves, pressure-reducing valve, oil cylinder, three position four-way directional control valve, flow speed control valve, electromagnetic relief valve and pumping source device, be characterized in that described pumping source device is made up of constant pressure variable displacement pump and two proportional variable pumps, mobile anchor clamps oil cylinder, rolling clamp oil cylinder and the required pressure oil of clutch and brake cylinder action are provided by constant pressure variable displacement pump, the required pressure oil of push action cylinder action is provided by two proportional variable pumps, and slide unit movement velocity, axial compressive force are directly controlled by two proportional variable pumps.Because its pumping source device adopts two proportional variable pumps and constant pressure variable displacement pump, substitutes duplex constant displacement pump control system oil pressure, has reduced the power consumption of system, has stablized oily temperature, finally makes system stability work.After measured, C450 type friction-welding machine adopts this hydraulic control system, and the average power consumption of a friction welding process circulation fluid pressing system drops to 391kJ by the 874kJ of prior art, and power consumption has reduced by 55%.
Description
Technical field
The present invention relates to a kind of friction-welding machine hydraulic control system.
Background technology
With reference to Fig. 2, existing friction-welding machine hydraulic control system comprises two position and four-way reversing valves, pressure-reducing valve, oil cylinder, three position four-way directional control valve, flow speed control valve, electromagnetic relief valve and pumping source device, interlock by each valve, the clamp of controlling friction-welding machine with unclamp, clutch and braking, and the slide unit direction of motion, speed and axial compressive force.
The pumping source device 20 of this hydraulic control system adopts duplex constant displacement pumps 10 for system provides pressure oil, and wherein the little pump of duplex constant displacement pump 10 provides pressure oil for clamp and clutch system, and the pressure size is controlled by overflow valve B17; The big pump of duplex constant displacement pump 10 provides pressure oil for the slide unit motion, and the pressure size is controlled by overflow valve A16.The action of mobile anchor clamps oil cylinder 7 is controlled by two position and four-way reversing valve C3, and pressure is controlled by pressure-reducing valve A4.The action of rolling clamp oil cylinder 8 is controlled by two position and four-way reversing valve B2, and pressure is controlled by pressure-reducing valve B5.The action of clutch and brake oil cylinder 9 is controlled by two position and four-way reversing valve A1, and pressure is controlled by pressure-reducing valve C6.Push action cylinder 11 drives the slide units motion, realizes that F.F. in the friction welding process, worker advance, friction, upset and five stages of rewind down.The worker advances and friction phase, two position and four-way reversing valve D14 work, and friction pressure is by pressure-reducing valve D15 control, and work speed is by flow speed control valve 13 controls.When F.F. and rewind down, two position and four-way reversing valve D14 dead electricity, three position four-way directional control valve 12 work, F.F. and rewind down speed depend on the metered flow of the big pump of duplex constant displacement pump 10.During upset, three position four-way directional control valve 12 right sides get electric work, and the pressure size is controlled by overflow valve A16.
In clamping or clutch and brake process, the piston of mobile anchor clamps oil cylinder 7, rolling clamp oil cylinder 8 and clutch and brake oil cylinder 9 is done mechanical movement, and the pressure oil that the little pump of duplex constant displacement pump 10 produces is formed with the mechanical power of usefulness.When clamp or unclamp put in place, after clutch and brake puts in place, the piston of mobile anchor clamps oil cylinder 7, rolling clamp oil cylinder 8 and clutch and brake oil cylinder 9 stops mechanical movement, there is not useful mechanical power consumption this moment, system is in packing stage, but the little pump of duplex constant displacement pump 10 is still with constant flow rate work, a large amount of high-pressure and hydraulic oil flow back to fuel tank by overflow valve B17, almost all change into heat.In F.F. and rewind down process, the piston of push action cylinder 11 is done mechanical movement, and the pressure oil that the big pump of duplex constant displacement pump 10 produces is formed with the mechanical power of usefulness.In friction and upset stage, the piston machine move distance of push action cylinder 11 is also very little, this moment, useful mechanical power consumed corresponding also very little, system is in packing stage substantially, but the big pump of duplex constant displacement pump 10 is still with constant flow rate work, a large amount of high-pressure and hydraulic oil flow back to fuel tank by overflow valve A16, almost all change into heat.Because in whole welding process, clamping or clutch and brake process and F.F. are relative with the time of rewind down process very short, less than 10% of whole weld interval, in most of the time, system is in packing state, the hydraulic oil that duplex constant displacement pump 10 produces all flows back to fuel tank by overflow valve A16 and overflow valve B17, does not produce useful mechanical power, changes into heat all.Cause oily temperature rise too fast, useless power is very big, and power utilization is very low.Simultaneously, hydraulic oil temperature directly influences hydraulic oil viscosity, and temperature is high more, viscosity is more little, and corresponding system leak quantitative changeization is big more, and the flow resistance of pipeline changes also more greatly, cause the various parameters of system to change thus, cause the instability of system, the corresponding reduction of control accuracy.If adopt cooling system control oil temperature, need the electric power that is directly proportional with quantity of heat production again, a large amount of heats are discharged in the atmosphere, are unfavorable for environmental protection.After measured, C450 type friction-welding machine adopts above-mentioned hydraulic control system, and the average power consumption of a friction welding process circulation fluid pressing system is about 874kJ.
Summary of the invention
Cause high, the unsettled deficiency of system of oil temperature owing to useless power attenuation is high in order to overcome prior art, the invention provides a kind of friction-welding machine hydraulic control system, the mode feed system oil pressure that its pumping source device adopts two proportional variable pumps to combine with constant pressure variable displacement pump, can reduce power attenuation, stabilize oil temperature and final stable hydraulic control system.
The technical solution adopted for the present invention to solve the technical problems: a kind of friction-welding machine hydraulic control system, the friction-welding machine hydraulic control system, comprise two position and four-way reversing valves, pressure-reducing valve, oil cylinder, three position four-way directional control valve, flow speed control valve, electromagnetic relief valve and pumping source device, be characterized in that described oil cylinder comprises mobile anchor clamps oil cylinder, the rolling clamp oil cylinder, clutch and brake oil cylinder and push action cylinder, described pumping source device is made up of constant pressure variable displacement pump and two proportional variable pump, mobile anchor clamps oil cylinder, rolling clamp oil cylinder and the required pressure oil of clutch and brake cylinder action are provided by constant pressure variable displacement pump, the required pressure oil of push action cylinder action is provided the slide unit movement velocity by two proportional variable pumps, axial compressive force is directly controlled by two proportional variable pumps.
The invention has the beneficial effects as follows: because the mode that its pumping source device adopts two proportional variable pumps to combine with constant pressure variable displacement pump, substitute the duplex constant displacement pump and come the feed system oil pressure, reduce the power attenuation of whole system, stablized oily temperature and final hydraulic control system steady operation.After measured, C450 type friction-welding machine adopts hydraulic control system of the present invention, and the average power consumption of a friction welding process circulation fluid pressing system drops to 391kJ by the 874kJ of prior art, and power consumption has reduced by 55%.
Below in conjunction with drawings and Examples the present invention is elaborated.
Description of drawings
Fig. 1 is a friction-welding machine hydraulic control system schematic diagram of the present invention.
Fig. 2 is a prior art friction-welding machine hydraulic control system schematic diagram.
Among the figure, 1-two position and four-way reversing valve A, 2-two position and four-way reversing valve B, 3-two position and four-way reversing valve C, 4-pressure-reducing valve A, 5-pressure-reducing valve B, 6-pressure-reducing valve C, 7-moves the anchor clamps oil cylinder, 8-rolling clamp oil cylinder, 9-clutch and brake oil cylinder, 10-duplex constant displacement pump, 11-push action cylinder, the 12-three position four-way directional control valve, 13-flow speed control valve, 14-two position and four-way reversing valve D, 15-pressure-reducing valve D, 16-overflow valve A, 17-overflow valve B, the 18-constant pressure variable displacement pump, the two proportional variable pumps of 19-, 20-pumping source device.
The specific embodiment
With reference to Fig. 1, the present invention includes two position and four-way reversing valves, pressure-reducing valve, oil cylinder, three position four-way directional control valve, flow speed control valve, electromagnetic relief valve and pumping source device, its pumping source device 20 is served as by constant pressure variable displacement pump 18 and two proportional variable pump 19, has reduced flow speed control valve 13, two position and four-way reversing valve D14 and the pressure-reducing valve D15 of prior art control friction and worker's entrance pressure power and speed.
Mobile anchor clamps oil cylinder 7, rolling clamp oil cylinder 8 and the required pressure oil of clutch and brake oil cylinder 9 actions are provided by constant pressure variable displacement pump 18, two position and four-way reversing valve A1, two position and four-way reversing valve B2, two position and four-way reversing valve C3 control three road binders road directions respectively, and pressure-reducing valve A4, pressure-reducing valve B5, pressure-reducing valve C6 control three road binders road pressure respectively.The setting pressure of constant pressure variable displacement pump needs the maximum greater than mobile anchor clamps oil cylinder, rolling clamp oil cylinder and the required operating pressure of clutch and brake oil cylinder.The setting pressure of overflow valve B17 is greater than the setting pressure of constant pressure variable displacement pump, only plays the safety valve effect in the course of work.Clamp with unclamp, in clutch and the braking maneuver process, when system pressure during less than setting pressure, the output of constant pressure variable displacement pump 18 flowing full amounts, realize clamping fast with unclamp, clutch and braking, after system pressure reaches setting pressure, constant pressure variable displacement pump 18 is in packing state, hydraulic oil only needs seldom, and flow can keep-up pressure constant, constant pressure variable displacement pump 18 output flows are very little, reduced flowing of hydraulic oil, thereby reduced the loss of power, effectively prevented oily temperature rise, strengthened the stability of system.
The required pressure oil of push action cylinder 11 actions is provided by two proportional variable pumps 19, and slide unit movement velocity, axial compressive force are directly controlled by two proportional variable pumps 19, and the direction of motion is by three position four-way directional control valve 12 controls.Can demarcate two proportional variable pump 19 workers in advance advances and the pairing proportion control voltage of F.F. flow, friction and upsetting force.The setting pressure of overflow valve A16 is greater than the maximum set pressure of two proportional variable pumps 19, only plays the safety valve effect in the course of work.When F.F., rewind down, pressure is set at upsetting force, flow set is the F.F. flow, because only with overcoming the guide rail movement damping, load is lighter when F.F., rewind down, system pressure is less than setting pressure, two proportional variable pumps 19 are by the F.F. flow output of setting, and the slide unit movement velocity is fast.When the worker advanced, two proportional variable pump 19 was set at friction pressure by Control of Voltage with pressure, and flow set is worker's influent stream amount, and pressure did not still reach setting value when the worker advanced, and two proportional variable pumps 19 reduce the slide unit movement velocity by worker's influent stream amount output of setting.Identical when flow advances with the worker with pressure set points during friction, identical when flow is with pressure set points and F.F. during upset.In friction and the compressing process, when system pressure less than setting pressure, variable pump is by setting flow value output, the quick response of assurance pressure; When system pressure more than or equal to setting pressure, variable pump reduces output flow automatically, keeps system pressure and equals setting pressure.Because oil cylinder leaks can be very not big, thus pressure reach after the setting value to keep flow very little, the oil pump power output is little, required motor power is little, has reduced the flowage friction of hydraulic oil, has effectively prevented oily temperature rise, has strengthened the stability of system.
Mobile anchor clamps oil cylinder 7, rolling clamp oil cylinder 8 and the required pressure oil of clutch and brake oil cylinder 9 actions are provided by constant pressure variable displacement pump 18, and the required pressure oil of application of force oil cylinder 11 actions is provided by two proportional variable pumps 19.
The friction welding preparatory stage, two position and four-way reversing valve A1, two position and four-way reversing valve B2, two position and four-way reversing valve C3 are in dead electricity, three position four-way directional control valve 12 also is in cut-off state, make whole device be in unloading condition, set two proportional variable pump 19 workers and advance and the pairing proportion control voltage of F.F. flow, friction and upsetting force.Start constant pressure variable displacement pump 18 and two proportional variable pump 19, preparation is finished.
The electromagnet of two position and four-way reversing valve C3, two position and four-way reversing valve B2 powers up, and chucking appliance system clamps.In the clamping process, when pressure during less than setting pressure, the output of constant pressure variable displacement pump 18 flowing full amounts realizes clamping fast, and after clamp pressure reached setting pressure, constant pressure variable displacement pump 18 was in packing state, and constant pressure variable displacement pump 18 flows reduce automatically.
Two proportional variable pump 19 pressure are set at upsetting force, flow set is the F.F. flow, three position four-way directional control valve 12 right-hand members power up, slide unit is moved to the left, because load is light during F.F., two proportional variable pumps 19 make slide unit rapid movement to the left by the F.F. flow output of setting, and enter fast forward stage.When slide unit enters worker's carry when putting, two proportional variable pump 19 pressure are set at friction pressure, flow set is worker's influent stream amount, because load this moment is still light, two proportional variable pumps 19 make slide unit move to the left with suitable low speed by worker's influent stream amount output of setting, enter the worker and advance the stage.Simultaneously, two position and four-way reversing valve A1 power up, and main shaft begins to rotate.
After the contact of the both sides of friction welding workpiece, in the engaging friction stage, the slide unit movement velocity depends primarily on friction shortening speed, and speed is relatively very low.Because this moment, the slide unit movement velocity was very low, system pressure raises rapidly, and when reaching the friction pressure of two proportional variable pumps 19 settings, two proportional variable pump 19 output flows reduce, and has only the required flow of additional slide unit motion.After fraction time reaches, the two position and four-way reversing valve A1 dead electricity that communicate with clutch and brake oil cylinder 9, main shaft stall.Simultaneously two proportional variable pumps 19 revert to maximum pressure and maximum stream flow is exported simultaneously, enter the upset stage.When system pressure less than setting upsetting force, two proportional variable pumps 19 are exported with the F.F. flow; When system pressure equals to set upsetting force, enter packing state, this moment required constant pressure, two proportional variable pumps 19 enter pressure and fill and give state, hydraulic oil only needs a spot of supply can keep-up pressure constant.
After the dwell time of setting reaches, two position and four-way reversing valve B2 dead electricity, rolling clamp discharges, three position four-way directional control valve 12 right side dead electricity, the left side gets electric, the oil circuit commutation, slide unit moves to the right.At this moment, because load is lighter, two proportional variable pump 19 flowing full amounts outputs, the slide unit movement velocity is fast, enters the rewind down stage, moves to original position up to slide unit, two position and four-way reversing valve A1 dead electricity, mobile anchor clamps discharge, and finish a weld cycle.
After measured, C450 type friction-welding machine adopts above-mentioned hydraulic control system, and the average power consumption of a friction welding process circulation fluid pressing system is reduced to 391kJ, and compared with prior art power consumption has reduced by 55%.
Claims (1)
1, a kind of friction-welding machine hydraulic control system, comprise two position and four-way reversing valves, pressure-reducing valve, oil cylinder, three position four-way directional control valve, flow speed control valve, electromagnetic relief valve and pumping source device, it is characterized in that: described oil cylinder comprises mobile anchor clamps oil cylinder, the rolling clamp oil cylinder, clutch and brake oil cylinder and push action cylinder, described pumping source device is made up of constant pressure variable displacement pump and two proportional variable pump, mobile anchor clamps oil cylinder, rolling clamp oil cylinder and the required pressure oil of clutch and brake cylinder action are provided by constant pressure variable displacement pump, the required pressure oil of push action cylinder action is provided the slide unit movement velocity by proportional variable pump, axial compressive force is directly controlled by proportional variable pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101884512A CN100571956C (en) | 2007-12-03 | 2007-12-03 | Friction welding machine proportion variable hydraulic control system |
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| CNB2007101884512A CN100571956C (en) | 2007-12-03 | 2007-12-03 | Friction welding machine proportion variable hydraulic control system |
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| CN100571956C true CN100571956C (en) | 2009-12-23 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500914B (en) * | 2011-11-03 | 2016-05-04 | 哈尔滨正晨焊接切割设备制造有限公司 | Hydraulic servo control phase friction welding method |
| CN102966635A (en) * | 2012-11-16 | 2013-03-13 | 无锡汇虹机械制造有限公司 | Consumption reduction method of hydraulic system of friction 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 |
| CN102937083A (en) * | 2012-11-16 | 2013-02-20 | 无锡汇虹机械制造有限公司 | Setting method of normal hydraulic pump of force application system |
| 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 |
| CN105414741B (en) * | 2016-01-08 | 2018-07-06 | 重庆德蚨乐机械制造有限公司 | A kind of friction welding (FW) floating zero system and its axial weldering, radial direction bonding control method |
| CN105673599B (en) * | 2016-03-15 | 2017-02-08 | 陕西理工学院 | Friction welding machine hydraulic system for controlling axial lengths of welded parts, and control method |
| CN106762970B (en) * | 2016-12-26 | 2019-06-28 | 中航力源液压股份有限公司 | A kind of double ratio control structures and control method of variable displacement motor |
| CN108637465A (en) * | 2018-07-12 | 2018-10-12 | 江苏锢邦智能装备有限公司 | A kind of inertia friction weld work system |
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2007
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