CN101985246A - Hydropress with bidirectional couple levelling function - Google Patents

Hydropress with bidirectional couple levelling function Download PDF

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Publication number
CN101985246A
CN101985246A CN201010243028XA CN201010243028A CN101985246A CN 101985246 A CN101985246 A CN 101985246A CN 201010243028X A CN201010243028X A CN 201010243028XA CN 201010243028 A CN201010243028 A CN 201010243028A CN 101985246 A CN101985246 A CN 101985246A
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CN
China
Prior art keywords
leveling cyclinder
slide block
levelling
leveling
couple
Prior art date
Application number
CN201010243028XA
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Chinese (zh)
Inventor
潘高峰
Original Assignee
天津市天锻压力机有限公司
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Application filed by 天津市天锻压力机有限公司 filed Critical 天津市天锻压力机有限公司
Priority to CN201010243028XA priority Critical patent/CN101985246A/en
Publication of CN101985246A publication Critical patent/CN101985246A/en

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Abstract

The invention relates to a hydropress with bidirectional couple levelling function, comprising an upper separator, four supports, lower separators, master cylinders and lateral cylinders, wherein a slider is connected with the master cylinders and the lateral cylinders. The hydropress is characterized in that levelling cylinders are fixedly installed on the upper and lower parts of each support; piston rods of the levelling cylinders are connected with the upper and lower ends of the four corners of the slider; levelling cylinders at the upper ends of the four corners of the slider form a torque group capable of applying couples with equal magnitude and opposite directions with levelling cylinders at the lower ends of the diagonals of the slider; and displacement sensors are also arranged at the four corners of the slider. The hydropress has the following advantages: the hydropress realizes levelling the press slider by utilizing the bidirectional couple levelling principle, thus not only shortening the levelling response time and improving the slider levelling precision and press production efficiency, but also avoiding loss of the main tonnage of the hydropress, substantially saving energy and lowering the production cost.

Description

Hydraulic press with two-way couple levelling function
Technical field
The invention belongs to the hydraulic press mechanical field, particularly relate to a kind of hydraulic press with two-way couple levelling function.
Background technology
Along with the development of titanium industrial circle, the forging specification is increasing, corresponding press tonnage is also increasing, and some aviation forging have surpassed 20,000 tons to the demand tonnage of press, and is therefore more and more higher to the forging requirement on machining accuracy of titanium, zirconium and titanium, zircaloy forging.The hydraulic press typical structure that is used to process particulate metal electrode at present is three beam four-column types, the master cylinder of its hydraulic press and the layout of slide block are that four master cylinders are installed in the entablature centre position, slide block is connected with the plunger of master cylinder, mounting column between entablature, workbench and the sill, slide block under master cylinder drives along with four pillars move up and down, at the slide block lower plane forging mold is installed, when the needs leveling, four master cylinders produce different pressure to reach the effect of correction according to the position of unbalance loading.The slide block of this kind structured liquid press adopts unidirectional leveling, be four leveling cyclinders that a direction only is housed on the slide block, when in the operating process one jiao of leveling cyclinder of slide block being carried out leveling, promptly apply certain leveling pressure to this angle leveling cyclinder, its corresponding angles leveling cyclinder can not be exerted pressure again, to guarantee the leveling effect.In addition, owing to the distance between four leveling cyclinders is less, i.e. leveling moment is little, and not only leveling response time length, leveling precision and production efficiency are low, and causes the loss of press master tonnage easily, wastes energy.
Summary of the invention
The present invention provides a kind of hydraulic press with two-way couple levelling function that improves hydraulic press leveling precision and the processing effect and the saving energy for solving the technical problem that exists in the known technology.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: the hydraulic press with two-way couple levelling function, comprise entablature, four pillars and sill constitute the closed frame fuselage by the pull bar pretension, on entablature, be fixed with master cylinder and side cylinder, slide block and master cylinder, side cylinder connects, four pillar inboards are provided with guide plate, be equipped with on the slide block and cooperate the guide rail that moves up and down with guide plate, it is characterized in that: described each pillar upper and lower is fixed with leveling cyclinder, four jiaos of top and bottom of the piston rod of leveling cyclinder and slide block are connected, each leveling cyclinder of four jiaos of upper ends of described slide block constitutes with the leveling cyclinder of its diagonal lower end can apply equal and opposite in direction and the opposite moment of couple group of direction, also is provided with the displacement transducer of four jiaos of depth of parallelism differences when being used for monitoring slide block movement position and operation in real time at four jiaos of places of slide block.
The present invention can also adopt following technical scheme: the hydraulic control system of described two-way couple leveling cyclinder comprises the pump group, the pump group has pressure safety valve and filter by pipeline connection, filter connects Pressure gauge, accumulator and proportion directional servo valve, and the proportion directional servo valve connects the two-way couple leveling cyclinder on each pillar respectively.
Also be provided with controllable check valve between the proportion directional servo valve of described hydraulic control system and the leveling cyclinder.
Advantage and good effect that the present invention has are: because the present invention adopts technique scheme, promptly on pillar and slide block, be provided with leveling cyclinder, each leveling cyclinder of four jiaos of upper ends of slide block constitutes with the leveling cyclinder of its diagonal lower end can apply equal and opposite in direction and the opposite moment of couple group of direction, and be the leveling system fuel feeding by a constant pressure variable displacement pump and one group of high pressure accumulator, apply power by the proportion directional servo valve that plays the leveling control action to the leveling cyclinder group, the application point that this group leveling cyclinder produces opposite sign but equal magnitude forms the eccentric moment that the moment of couple is offset generation when forging, thereby reaches the leveling effect.So not only shorten the leveling response time, improve slide block leveling precision and production efficiency, and can avoid the loss of hydraulic press master tonnage, saved the energy significantly, reduce production costs.
Description of drawings
Fig. 1 is a structural representation of the present invention; Fig. 2 is that A-A cutaway view Fig. 3 of Fig. 1 is leveling cyclinder topology layout figure of the present invention; Fig. 4 is a leveling cyclinder hydraulic pressure control systematic schematic diagram of the present invention.
Among the figure: 1, the last angle of A leveling cyclinder; 2, the last angle of B leveling cyclinder; 3, the last angle of C leveling cyclinder; 4, the last angle of D leveling cyclinder; 5, A inferior horn leveling cyclinder; 6, B inferior horn leveling cyclinder; 7, C inferior horn leveling cyclinder; 8, D inferior horn leveling cyclinder; 9, slide block; 10, displacement transducer; 11, proportion directional servo valve; 12, proportion directional servo valve; 13, controllable check valve; 14, pump group; 15, fuel tank; 16, filter; 17, pressure safety valve; 18, Pressure gauge; 19, accumulator; 20, counterbalance valve; 21, pull bar; 22, entablature; 23, pillar; 24, positioning key; 25, sill; 26, workbench; 27, cope match-plate pattern; 28, lower bolster; 29, master cylinder; 30, side cylinder; 31, guide plate; 32, guide rail.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, now exemplify following examples, and conjunction with figs. is described in detail as follows: see also Fig. 1-Fig. 4, hydraulic press with two-way couple levelling function comprises that entablature 22, four pillars 23 and sill 25 constitute the closed frame fuselage by pull bar 21 pretensions.On entablature, be fixed with master cylinder 29 and side cylinder 30, slide block 9 is connected with master cylinder, side cylinder, four pillar inboards are fixed with guide plate 31, be equipped with on the slide block and cooperate the guide rail 32 that moves up and down with guide plate, the slide block lower surface is fixed with cope match-plate pattern 27, by workbench 26 lower bolster 28 is installed on the sill.Described each pillar upper and lower is fixed with leveling cyclinder, the leveling cyclinder on each pillar top constitutes with the leveling cyclinder of its diagonal bottom can apply equal and opposite in direction and the opposite moment of couple group of direction, and four jiaos of top and bottom of the piston rod of leveling cyclinder and slide block are connected.Four jiaos of upper ends of described slide block 9 are respectively equipped with A and go up angle leveling cyclinder 1, the last angle of B leveling cyclinder 2, the last angle of C leveling cyclinder 3 and D go up angle leveling cyclinder 4, four jiaos of lower ends of slide block 9 are respectively equipped with A inferior horn leveling cyclinder 5, B inferior horn leveling cyclinder 6, C inferior horn leveling cyclinder 7 and D inferior horn leveling cyclinder 8, be that each leveling cyclinder of four jiaos of upper ends of slide block can apply equal and opposite in direction and the opposite A of direction with the leveling cyclinder formation of its diagonal lower end, B, C, four moment of couple groups of D also are provided with the displacement transducer 10 of four jiaos of depth of parallelism differences when being used for monitoring slide block movement position and operation in real time at four jiaos of slide blocks place.
Described hydraulic control system comprises fuel tank 15, pump group 14, proportion directional servo valve 12, controllable check valve 13, filter 16 and pressure safety valve 17, the pump group is installed on the fuel tank, and by pipeline connection pressure safety valve 17 and high-accuracy filter 16, high-accuracy filter is communicated with Pressure gauge 18 and accumulator 19 respectively by pipeline, another road is communicated with proportion directional servo valve 11 and proportion directional servo valve 12, and proportion directional servo valve 11 and proportion directional servo valve 12 are connected each leveling cyclinder of four jiaos of upper ends of slide block, lower end respectively.Also be provided with controllable check valve 13 between proportion directional servo valve 11 and proportion directional servo valve 12 and each leveling cyclinder, described proportion directional servo valve 11 and proportion directional servo valve 12 are connected with counterbalance valve 20 respectively.
The levelling principle of two-way couple four-corner leveling oil cylinder is: the proportion directional servo valve 11 of two groups of high frequency responses and four working chambers of 12, as shown in Figure 4, AC ', DB ', BD ', CA ' control 4 groups of leveling cyclinders respectively, the commutation function characteristics of proportion of utilization direction servo valve self, make its slide block realize when the pressurization of A group leveling cyclinder the pressure release of C group leveling cyclinder; When the pressurization of B group leveling cyclinder, produce couple during the pressure release of D group leveling cyclinder and resist eccentric load.In actual leveling process, because eccentric moment is arbitrarily drift in φ 600mm diameter range, therefore, the medium dip of slide block pressing process also changes thereupon, in any case but change, always there are two to be maximum in four instantaneous numerical value on 4 angles of slide block, just by forging the high point that eccentric drag causes.At this moment, the leveling cyclinder group when leveling system can be at instantaneous two high point value positions is exerted pressure, as A group leveling cyclinder and B group leveling cyclinder.And the also just corresponding pressure release of the C of corresponding its application point group leveling cyclinder and D group leveling cyclinder, at this moment this anti-moment of couple of two groups has just formed anti-eccentric moment, rectifies a deviation to forging the height point that eccentric drag causes.Here need to prove that the Moment Point that eccentric load produces changes at any time, therefore the height point that causes of eccentric drag also changes, and therefore, the combination of leveling cyclinder also is changeable.In slide block position error value is adjusted to the permission gradient numerical value of setting, levelling control system will keep this state.Destroyed once more up to this permissible level, the leveling correction continues again, finishes up to hammered work.
After pump group 14 starts, for satisfying the requirement of proportion directional servo valve 11 and 12 pairs of oil cleanliness of proportion directional servo valve, need filter by high-accuracy filter 16 from the hydraulic oil of pump group output, Pressure gauge 18 detected pressures, stablize the pressure of proportion directional servo valve 11 and 12 imports of proportion directional servo valve by accumulator 19, avoid pressure fluctuation on a large scale to occur.Then according to the feedback information of displacement transducer, adjust and the flow size of 11 two outlets of definite proportion directional servo valve and 12 two outlets of proportion directional servo valve.

Claims (3)

1. hydraulic press with two-way couple levelling function, comprise entablature, four pillars and sill constitute the closed frame fuselage by the pull bar pretension, on entablature, be fixed with master cylinder and side cylinder, slide block and master cylinder, side cylinder connects, four pillar inboards are provided with guide plate, be equipped with on the slide block and cooperate the guide rail that moves up and down with guide plate, it is characterized in that: described each pillar upper and lower is fixed with leveling cyclinder, four jiaos of top and bottom of the piston rod of leveling cyclinder and slide block are connected, each leveling cyclinder of four jiaos of upper ends of described slide block constitutes with the leveling cyclinder of its diagonal lower end can apply equal and opposite in direction and the opposite moment of couple group of direction, also is provided with the displacement transducer of four jiaos of depth of parallelism differences when being used for monitoring slide block movement position and operation in real time at four jiaos of places of slide block.
2. the hydraulic press with two-way couple levelling function according to claim 1, it is characterized in that: the hydraulic control system of described two-way couple leveling cyclinder comprises the pump group, the pump group has pressure safety valve and filter by pipeline connection, filter connects Pressure gauge, accumulator and proportion directional servo valve, and the proportion directional servo valve connects the two-way couple leveling cyclinder on each pillar respectively.
3. the hydraulic press with two-way couple levelling function according to claim 2 is characterized in that: also be provided with controllable check valve between the proportion directional servo valve of described hydraulic control system and the leveling cyclinder.
CN201010243028XA 2010-08-02 2010-08-02 Hydropress with bidirectional couple levelling function CN101985246A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102363345A (en) * 2011-06-30 2012-02-29 天津市天锻压力机有限公司 Control system for leveling four corners of hydraulic press
CN103862693A (en) * 2014-03-27 2014-06-18 江苏莘翔机电有限公司 Novel framework-type fast hydraulic machine
CN104190787A (en) * 2014-08-13 2014-12-10 沃得重型机床(中国)有限公司 Horizontal regulation control system for movable top cap of press machine
CN104985861A (en) * 2015-06-18 2015-10-21 合肥合锻机床股份有限公司 Automatic regulating device for precision of hydraulic machine sliding block
CN105351264A (en) * 2015-11-25 2016-02-24 日照海卓液压有限公司 Multi-oil-cylinder rigid passive synchronous hydraulic control system
CN105351265A (en) * 2015-11-25 2016-02-24 日照海卓液压有限公司 Multi-oil-cylinder rigid passive volume synchronous hydraulic control system
CN105423977A (en) * 2015-11-18 2016-03-23 合肥合锻机床股份有限公司 Hydraulic press slider detection device and detection method thereof
CN106182885A (en) * 2016-07-15 2016-12-07 合肥工业大学 A kind of large-tonnage short stroke hydraulic single column press slide block anti-torsion device
CN106583616A (en) * 2016-12-19 2017-04-26 南通锻压设备股份有限公司 Active deflection resisting system for sliding block of pendulum rolling hydraulic machine
CN107553968A (en) * 2017-10-25 2018-01-09 江苏人人发机器制造有限公司 The quick adjustment type hydraulic press of sliding block
CN107672206A (en) * 2017-10-25 2018-02-09 江苏人人发机器制造有限公司 High stationarity hydraulic press

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CN1903476A (en) * 2005-07-28 2007-01-31 中南大学 Compensation synchronous balancing control system for large die forging hydraupress
CN101693410A (en) * 2009-08-14 2010-04-14 天津市天锻压力机有限公司 Passive four-corner leveling dynamic device for glass fiber reinforced plastic hydraulic machine
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102363345A (en) * 2011-06-30 2012-02-29 天津市天锻压力机有限公司 Control system for leveling four corners of hydraulic press
CN103862693A (en) * 2014-03-27 2014-06-18 江苏莘翔机电有限公司 Novel framework-type fast hydraulic machine
CN104190787A (en) * 2014-08-13 2014-12-10 沃得重型机床(中国)有限公司 Horizontal regulation control system for movable top cap of press machine
CN104190787B (en) * 2014-08-13 2016-03-02 沃得重型机床(中国)有限公司 Forcing press movable apical cap Level tune control system
CN104985861A (en) * 2015-06-18 2015-10-21 合肥合锻机床股份有限公司 Automatic regulating device for precision of hydraulic machine sliding block
CN105423977A (en) * 2015-11-18 2016-03-23 合肥合锻机床股份有限公司 Hydraulic press slider detection device and detection method thereof
CN105351264A (en) * 2015-11-25 2016-02-24 日照海卓液压有限公司 Multi-oil-cylinder rigid passive synchronous hydraulic control system
CN105351265A (en) * 2015-11-25 2016-02-24 日照海卓液压有限公司 Multi-oil-cylinder rigid passive volume synchronous hydraulic control system
CN106182885A (en) * 2016-07-15 2016-12-07 合肥工业大学 A kind of large-tonnage short stroke hydraulic single column press slide block anti-torsion device
CN106583616A (en) * 2016-12-19 2017-04-26 南通锻压设备股份有限公司 Active deflection resisting system for sliding block of pendulum rolling hydraulic machine
CN107553968A (en) * 2017-10-25 2018-01-09 江苏人人发机器制造有限公司 The quick adjustment type hydraulic press of sliding block
CN107672206A (en) * 2017-10-25 2018-02-09 江苏人人发机器制造有限公司 High stationarity hydraulic press

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Application publication date: 20110316