CN207224666U - Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control - Google Patents
Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control Download PDFInfo
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- CN207224666U CN207224666U CN201721193142.XU CN201721193142U CN207224666U CN 207224666 U CN207224666 U CN 207224666U CN 201721193142 U CN201721193142 U CN 201721193142U CN 207224666 U CN207224666 U CN 207224666U
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- 239000000843 powder Substances 0.000 title claims abstract description 56
- 238000006073 displacement reaction Methods 0.000 claims abstract description 24
- 238000007667 floating Methods 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 210000004907 gland Anatomy 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 229910000906 Bronze Inorganic materials 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 239000010974 bronze Substances 0.000 claims description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000004080 punching Methods 0.000 abstract description 23
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000004220 aggregation Methods 0.000 abstract description 5
- 230000002776 aggregation Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 107
- 238000007493 shaping process Methods 0.000 description 16
- 230000007246 mechanism Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000202814 Cochliomyia hominivorax Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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Abstract
Function set system, which is rushed, in the utility model numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control refers to numerical control (CNC) mechanical electronic hydraulic combination drive servo powder forming machine during product powder forming part forming, the mechanical action system for four functions that upper punching must possess, is realized using after mechanical electronic hydraulic mixing Servo Drive Technology's by a set of extremely simple aggregation system.Mobile jib, floating table top, servo-cylinder, the valve draining pressure control Cut-open-and-clean systems for realizing cylinder movement and the measuring system for measuring oil cylinder displacement are rushed including on；Servo-cylinder includes valve piston, big piston cylinder, dustband gland, big piston and corresponding fixing screws and sealing ring；Valve draining pressure control system includes proportional reversing valve, solenoid valve one, solenoid valve two, solenoid valve three, solenoid valve four, safety valve one, safety valve two, proportional pressure control valve and pressure sensor；The measuring system of measurement oil cylinder displacement includes magnetic grid measuring scale main body, magnetic grid measuring scale protective cover, magnetic grid measuring scale mounting blocks and measuring block.
Description
Technical field
Rush what function set system was related in the utility model numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control
Numerical control (CNC) mechanical electronic hydraulic combination drive servo powder forming machine powder metallurgy, hard alloy, magnetic material, special cermacis,
Friction plate and carbon product powder forming part are in forming process, the mechanical action system for four functions that upper punching must possess,
Realized using after mechanical electronic hydraulic mixing Servo Drive Technology's by a set of extremely simple aggregation system.
Background technology
Mechanical powder forming machine develops more than 20 year, large-tonnage in China by digesting and assimilating advanced foreign technology
It is also the thing of nearly 10 years that (more than 2000kN) powder forming machine, which can be used widely,.But such powder forming machine
All shaping actions functions realized by mechanical component, particularly protect the demoulding, hydraulic die cushion, on reconstitute whole, level pressure into
Shape and forming mode selection more, the required precision using the huge structure of four big functions, complexity, machined part for determining journey shaping
High, length assembly period, degree-of-difficulty factor are big, and cost is high, and complete machine precision and machine performance are difficult to meet high-precision powder most absolutely
The shaping demand of product part.
The content of the invention
The purpose of this utility model is to provide a kind of numerical control mechanical electronic hydraulic combination drive servo powder for above-mentioned shortcoming
Four big feature capability aggregation systems are rushed in forming machine valve control, Servo Drive Technology's are mixed using mechanical electronic hydraulic, by the protection demoulding, hydraulic pressure
Pad, on reconstitute forming mode selection four big function sets of whole, the level pressure shaping with determine journey shaping in a servo-cylinder, pass through
Electro-hydraulic closed-loop control simultaneously drives servo oil pump（Shared with host hydraulic system）Or proportional servo valve and other valve groups are realized and watched
Cylinder action is taken, oil cylinder displacement stroke is measured by the pressure sensor measurement pressure in system, magnetic grid measuring scale, is passed through
Four functions that must possess are rushed on when the common combination of above-mentioned component is to realize powder pressing.
When the definition of protection demoulding functions refers to powder forming, when compacting, which terminates the demoulding, not to be had started, upper punching has all the time
One constant power is added on the blank of oneself repressed shaping until cavity plate pulls down the demoulding and terminates, and at this moment upper punching could be quickly upward
Return.
The effect of the function is the cracking caused by the elastic after effect of shaped blanks when preventing the demoulding.
When the definition of hydraulic pressure cushion function refers to powder forming, press power has by the hydraulic oil of servo-cylinder using hydraulic oil
Have the characteristics of micro compression implement pressure buffer ensure powder compression molding when be an incremental shaping loading process；Again
The forming pressure that blank then can be also measured by the pressure sensor on oil cylinder is formed the pressure control of power and surpasses
Pressure alarm during maximum plastic force is crossed, ensures machine shape quality and equipment work safety.
On when reconstituting whole definition and referring to powder forming, if the upper punching depth that immerses cavity plate needed when excessive or excessively shallow into
Row finishing, the utility model is to reconstitute whole purpose by varying the movement position of piston to reach.
Level pressure is shaped with determine the definition of journey forming mode, usually mechanical powder forming machine be using determine journey forming mode by
Powder is compressed into the molded article i.e. height of control shaped blanks as principal element, and pressure is secondary cause；And fluid pressure type
Powder forming machine is that powder is compressed into the molded article i.e. density of control shaped blanks as master using level pressure forming mode
Factor is wanted, stroke is secondary cause；And the utility model can be with by mechanical movement and forming pressure measurement and electrical control
Realize that two kinds of modes select to use.
It is to take to rush function set system in the utility model numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control
Following technical scheme is realized：
Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control to be included rushing mobile jib, floats
Table top, servo-cylinder, the valve draining Ya Kong Cut-open-and-clean systems for realizing cylinder movement, the measuring system for measuring oil cylinder displacement and control
The digital control system of oil cylinder function action.
Servo-cylinder includes valve piston, big piston cylinder, dustband gland, big piston and corresponding fixing screws and sealing
Circle.On rush mobile jib lower part be used as valve piston cylinder barrel, big piston cylinder be used as big piston cylinder barrel；Valve piston uses spiral shell with big piston
Nail is joined together to form double-piston；Big piston cylinder rushes mobile jib with and is also joined together to form double-piston cylinder body using screw.
So form one A-A of oil cylinder chamber, two B-B of oil cylinder chamber, oil cylinder chamber three C-C, tri- oil cylinder chambers, wherein one A-A of oil cylinder chamber and oil cylinder chamber
Two B-B are connected, and by the hydraulic fluid port of big piston into fuel-displaced, play the function that two oil cylinders bear press power.Three C-C of oil cylinder chamber is by living greatly
Plug cylinder plays the role of promoting oil cylinder piston to return up into fuel-displaced.Piston is also equipped with the sealing ring of low-friction coefficient with cylinder, greatly
Piston, valve piston outside diameter and big piston cylinder rod cavity inner wall are also welded with tin bronze layer and improve service life simultaneously to reduce friction of motion
Ensure that piston does not produce under very low driving force to creep, it is ensured that above rush Adjustment precision and adjustment is stablized.Dustband gland is installed
In big piston cylinder bottom, dustband gland is used as maintenance dustband, which can prevent big piston external diameter from car
Between the pollution of middle koniology.
Servo-cylinder is rushed in mobile jib on powder forming machine, big piston（Oil cylinder piston）Bottom surface rushes floating table with
Face is fitted together, and the oil supply system equipped with pressure sensor is installed on floating table top, on rush mobile jib and floating table top respectively with
The fixing end for measuring the magnetic grid measuring scale of the measuring system of oil cylinder displacement is connected with measuring block；The number of control cylinder function action
Control system is additionally installed in power control cabinet.
Valve draining pressure control system includes proportional reversing valve, solenoid valve one, solenoid valve two, solenoid valve three, solenoid valve four, peace
Full valve one, safety valve two, proportional pressure control valve and pressure sensor.Valve draining pressure control system also sets up the above-mentioned hydraulic pressure member device of installation
The valve block of part, pipeline, connector, pressure gauge etc..
The Hydraulic Elements of above-mentioned valve draining pressure control system integrate to form a valve draining pressure by multiple valve blocks
Control system component is rushed on floating table top on being installed on nearby, then by two stainless steel pipes by valve draining pressure control system
Two output oil ports on component are connected with the hydraulic fluid port up and down of servo-cylinder respectively, and such valve draining pressure control system can be right
Servo-cylinder carries out upper and lower cavity fuel feeding.Valve draining pressure control system component is rushed on floating table top on being installed on nearby.Its purpose is just
It is to try to shorten the oil feed line of servo-cylinder, reduces the influence for the control accuracy that oil feed line moves servo-cylinder.It is above-mentioned
The fuel feeding of valve draining pressure control system and main unit hydraulic control unit system fuel feeding, 2 sizes are driven by a servomotor at the same time
Gear pump P2, P3 of flow are through pressure sensor, pressure switch, oil strainer, check valve, there is provided can use oil sources, then the oil
Source is divided into two tunnels, all the way for main unit hydraulic control loop, all the way for above-mentioned valve draining pressure control system, on oil supply pipe oil inlet
Being provided with that check valve ensures can only unidirectional fuel feeding.The valve draining pressure control system is when reconstituting whole function in execution, due to needing
Oil mass very little, at this moment big pump P2 be in unloading condition（Unloading valve Fig. 1 is not drawn into）Oil sources only is provided by small pump P3, so as to upper punching row
Journey is accurately adjusted；Also stroke can be rushed on when compressing to be adjusted, because this fuel supply method can also carry
For high pressure fuel source.
Measuring the measuring system of oil cylinder displacement includes magnetic grid measuring scale main body, magnetic grid measuring scale protective cover, magnetic grid measurement
Ruler mounting blocks and measuring block.Magnetic grid measuring scale, magnetic grid measuring scale protective cover are installed on magnetic grid measuring scale mounting blocks, and magnetic grid is surveyed
In gage mounting blocks installed part float plate, float plate links together with big piston again, and measuring block is installed on big piston cylinder, greatly
Piston cylinder rushes mobile jib with again and links together, and when size piston motion, float plate also follows movement magnetic grid measuring scale is had one
A relative displacement that mobile jib is rushed on, that is to say, that measuring block has been made displacement movement relative to magnetic grid measuring scale, so that
Change position of the measuring block relative to magnetic grid measuring scale, magnetic grid measuring scale is exported after corresponding pulse signal again through digital control system
Operation of analog quantity finally draw piston displacement value.
Control cylinder function in function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control to move
The digital control system of work uses digital intelligent servo-control system, equipped with PAC cyclelogs, pressure mould analog quantity module, measurement number
Word arithmetic analog module and proportional valve control module, servopump（Shared with host hydraulic system）Control module.
The conjunction of function set system design is rushed in the utility model numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control
Reason, it is compact-sized, former mechanical powder forming machine is realized that the machine components processing quantity of said mechanism is reduced to by more than 100
More than 10, it drastically reduce the area machining operations amount, shorten installation time.
Due to realizing four big functions of upper punching using servo-cylinder and its match system, used than former mechanical powder forming machine
Mechanical structure realizes that the complete machine for rushing four big functions highly shortens 1-2 meters and (refers to the powder forming that plastic force is more than 2000kN
Machine).
Traffic control system is rushed on former mechanical powder forming machine worm gear pairs are mounted in using motor driving worm gear pairs, adjustment screw
Worm gear in, Gu the screw thread in this screw and worm gear must carry the power equal with plastic force, its undesirable element be requirement screw thread tool
Have very high intensity, a good precision, and it is complicated, difficulty of processing is big, Adjustment precision is low can not be right in forming process
On rush in row servo adjustment；And rush stroke in the use servo-cylinder adjustment of the utility model and overcome drawbacks described above completely.
The numerical value that the utility model also rushes Traffic control system by employs closed loop intelligent automatic control, and being inputted in touch-screen needs
The data to be adjusted, measure oil cylinder piston present position and its anti-routed position signal by magnetic grid measuring scale, pass through PAC programme-control
Performed after device computing by hydraulic system driving servo-cylinder.The change that may occur for rushing stroke on during powder forming,
This function of the utility model can be adjusted at random.
The utility model is also by former mechanical powder forming machine by adding the combination of one or more cylinders and for air circuit
Performed to realize that upper punching protection demoulding functions change by servo-cylinder, simplify machine construction, reduce manufacturing cost and use cost.
In view of the part material of powder compression molding and the difference of shape, required protection knockout press is also not quite similar, and
The supply gas pressure of air pressure is limited in scope (0-0.6Mpa), also needs to add a supercharging device sometimes to being pressurized for air circuit
(being up to 1Mpa), and the adjustable range that protect knockout press can be extended to 0-5Mpa by the utility model, it is even broader without
Increase other device.
The hydraulic die cushion functional structure of the utility model and the hydraulic pressure mat structure of mechanical powder forming machine are substantially similar.But machine
The hydraulic die cushion of tool formula powder forming machine will need to increase a recharging oil device progress repairing to its issuable leakage, and this reality
With new, without carry out repairing to hydraulic die cushion
What the hydraulic servo oil cylinder of the utility model can not only realize mechanical powder forming machine determines journey formed powder system
The function of product part, by the switching to forming mode in touch screen, can also realize level pressure forming mode, to adapt to shaping
The very high pulverulent product part of density requirements.
The data acquisition of the four function set system of upper punching of the utility model and control using after key parameter is inputted by
Operational formula built in CPU carries out intelligent digital computing and sends execute instruction, without being manually set and adjusting.
Brief description of the drawings
Below with reference to attached drawing, the utility model is described in further detail：
Fig. 1 is to rush function set system structure diagram in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control;
Fig. 2 is the valve control numerical control original that function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control
Manage schematic diagram.
Embodiment
Referring to the drawings 1,2, rushing function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control includes
On rush mobile jib 1, floating table top 3, servo-cylinder, the valve draining pressure control system of realizing cylinder movement, measurement oil cylinder displacement
Measuring system and the digital control system of control cylinder function action.
Servo-cylinder includes valve piston 4a, big piston cylinder 4b, dustband gland 4c, big piston 4d and fixes spiral shell accordingly
Nail and sealing ring.On rush 1 lower part of mobile jib be used as valve piston 4a cylinder barrel, big piston cylinder 4b be used as big piston 4d cylinder barrel；Small work
Plug 4a and big piston 4d is joined together to form double-piston with screw；Big piston cylinder 4b rushes mobile jib 1 with and is also connected with screw
Double-piston cylinder body is formed together.One A-A of oil cylinder chamber, two B-B of oil cylinder chamber, oil cylinder chamber three C-C, tri- oil cylinder chambers are so formed, its
Middle one A-A of oil cylinder chamber is connected with two B-B of oil cylinder chamber, by the hydraulic fluid port of big piston into fuel-displaced, is played two oil cylinders and is born press power
Function.Three C-C of oil cylinder chamber is played the role of promoting oil cylinder piston to return up by big piston cylinder into fuel-displaced.Piston is also equipped with cylinder
The sealing ring of low-friction coefficient, big piston 4d, valve piston 4a outside diameters and big piston cylinder 4b rod cavities inner wall are also welded with tin bronze layer
Creeped with reducing friction of motion raising service life and ensureing that piston does not produce under very low driving force, it is ensured that above reconstitute whole essence
Degree and adjustment are stablized.Dustband gland 4c is installed on big piston cylinder 4b bottoms, and dustband gland 4c is used as maintenance dustband, should
Dustband gland 4c can prevent big piston 4d outside diameters from being polluted from koniology in workshop.
Servo-cylinder is rushed in mobile jib 1 on powder forming machine, big piston 4d（Oil cylinder piston 4）Bottom surface and upper punching are floating
Dynamic table top 5 is fitted together, and the oil supply system B equipped with pressure sensor is installed on floating table top 3, on rush mobile jib 1 and floating table
Fixing end of the face 3 respectively with the magnetic grid measuring scale 2 for the measuring system for measuring oil cylinder displacement is connected with measuring block 3；Control cylinder
The digital control system of function action is additionally installed in power control cabinet.
Valve draining pressure control system includes proportional reversing valve 2-1, one 2-2 of solenoid valve, two 2-3 of solenoid valve, three 2- of solenoid valve
5th, four 2-7 of solenoid valve, one 2-4 of safety valve, two 2-8 of safety valve, proportional pressure control valve 2-6 and pressure sensor PJ2-1.Valve draining pressure
Control system also sets up the valve block for installing above-mentioned hydraulic component, pipeline, connector, pressure gauge etc..
The Hydraulic Elements of above-mentioned valve draining pressure control system integrate to form a valve draining pressure by multiple valve blocks
Control system component is rushed on floating table top 5 on being installed on nearby, then by two stainless steel pipes by valve control hydraulic control system
Two output oil ports on system component are connected with the hydraulic fluid port up and down of servo-cylinder respectively, such valve draining pressure control system
Upper and lower cavity fuel feeding is carried out to servo-cylinder.Valve draining pressure control system component is rushed on floating table top on being installed on nearby.Its purpose
Just it is to try to shorten the oil feed line of servo-cylinder, reduces the influence for the control accuracy that oil feed line moves servo-cylinder.On
The fuel feeding and main unit hydraulic control unit system fuel feeding of valve draining pressure control system are stated, 2 are driven at the same time by a servomotor M2
Gear pump P2, P3 of small-large flow are through pressure sensor PJ1, pressure switch FX3, oil strainer, check valve 2-9, there is provided available
Oil sources, then the oil sources be divided into two tunnels, all the way for main unit hydraulic control loop, all the way for above-mentioned valve draining pressure control system, supply
Being provided with that check valve 2-9 ensures on oil-piping oil inlet can only unidirectional fuel feeding.The valve draining pressure control system reconstitutes in execution
During whole function, due to needing oil mass very little, at this moment big pump P2 is in unloading condition（Unloading valve Fig. 1 is not drawn into）Only carried by small pump P3
Oil supply source, so as on rushing stroke is accurately adjusted；Also stroke can be rushed on when compressing to be adjusted, because this
Kind fuel supply method can also provide high pressure fuel source.
Measuring the measuring system of oil cylinder displacement includes magnetic grid measuring scale main body 2a, magnetic grid measuring scale protective cover 2b, magnetic grid
Measuring scale mounting blocks 2c and measuring block 3.Magnetic grid measuring scale 2a, magnetic grid measuring scale protective cover 2b are installed installed in magnetic grid measuring scale
On block 2c, in magnetic grid measuring scale mounting blocks 2c installed parts float plate 5, float plate 5 links together with big piston 4d again, measuring block
3 are installed on big piston cylinder 4b, and big piston cylinder 4b rushes mobile jib 1 again with and links together, the float plate when size piston motion
Also and then movement magnetic grid measuring scale is had a relative displacement for rushing mobile jib 1 on, that is to say, that make measuring block 3 relative to
Magnetic grid measuring scale has made displacement movement, so that position of the measuring block 3 relative to magnetic grid measuring scale is changed, the output of magnetic grid measuring scale
The operation of analog quantity through digital control system finally draws piston displacement value again after corresponding pulse signal.
Control cylinder function in function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control to move
The digital control system of work uses digital intelligent servo-control system, equipped with PAC cyclelogs, pressure mould analog quantity module, measurement number
Word arithmetic analog module and proportional valve control module, servopump（Shared with host hydraulic system）Control module.
The PAC cyclelogs use commercially available PAC programming automations controller.The pressure mould analog quantity module is adopted
With commercially available pressure mould analog quantity module.The measurement digital operation analog module uses commercially available PLC analog quantitys and digital quantity mould
Block.The proportional valve control module uses commercially available proportional valve controller.The servopump control module uses commercially available servo
Pump controller.
It is using the oil supply system that aggregation system is rushed on servo valve control on the left of Fig. 1.
On rush the oil cylinder generally use double-piston cylinder of aggregation system, the purpose is to ensure specified shaping pressure and shaping
Mobile jib diameter is rushed reduce on the premise of power as far as possible on.For rushed in guarantee Adjustment precision and adjustment stability, pairing plug oil cylinder according to
Servo-cylinder standard design, it is desirable to when charge oil pressure be 0.3Mpa, oil cylinder piston do not allow generation crawling exercises, on rush stroke
The resolution of adjustment is controlled within 0.01mm.
Servo-cylinder 4 rushed from above mobile jib 1, valve piston 4a, dust-proof ring cover 4c, dust-proof ring cover 4c, big piston 4d and screw,
Dustband, sealing ring composition；On rush 1 lower part of mobile jib be used as valve piston 4a cylinder barrel, big piston cylinder 4b be used as big piston 4d cylinder
Cylinder；Valve piston 4a and big piston 4d is joined together to form double-piston with screw；Big piston cylinder 4b rushes mobile jib 1 also with using spiral shell with
Nail is joined together to form double-piston cylinder body.So form one A-A of oil cylinder chamber, two B-B of oil cylinder chamber, oil cylinder chamber three C-C, tri- oil
Cylinder chamber, wherein one A-A of oil cylinder chamber are connected with two B-B of oil cylinder chamber, by the hydraulic fluid port of big piston into fuel-displaced, are played two oil cylinders and are born to press
The function of power processed.C-C chambers are played the role of promoting oil cylinder piston to return up by big piston cylinder into fuel-displaced.Piston is also equipped with cylinder
The sealing ring of low-friction coefficient, big valve piston 4c, 4a outside diameter and big piston cylinder 4b rod cavities inner wall are also welded with tin bronze layer to subtract
Few friction of motion improves service life and ensures that piston does not produce under very low driving force and creeps, it is ensured that above rush Adjustment precision and
Adjustment is stablized.Dust-proof ring cover 4c is used as maintenance dustband, which can prevent big piston 4d outside diameters from air ash in workshop
Dustiness contaminates.
Resolution is used to measure the movement travel (the i.e. upper adjustment of punching 6 stroke) of oil cylinder, magnetic grid for 0.5 μm of magnetic grid measuring scale 2
Measuring scale 2 is installed on the side of floating table top 5, and measurement head is fixed on oil cylinder body side surface all the time, when oil cylinder piston 4 makees Traffic control system
Make floating table top 5 make to move relative to cylinder body during movement, measuring scale 2 is relatively moved in measurement head 3 so as to reach
The purpose of measurement.
Measuring system is by magnetic grid measuring scale 2a, magnetic grid measuring scale protective cover 2b, magnetic grid measuring scale mounting blocks 2c, measuring block 3
And mounting screw composition.Part 2a, 2b are installed on 2c, and in 2c installed parts float plate 5, float plate is connected to big piston 4d again
Together, measuring block 3 is installed on big piston cylinder 4b, and 4b rushes mobile jib 1 again with and links together, and floats when size piston motion
Also and then movement makes measuring scale have a relative displacement for rushing mobile jib 1 on to plate, that is to say, that makes measuring block 3 relative to survey
Gage has made displacement movement, so as to change position of the measuring block 3 relative to measuring scale, measuring scale exports corresponding pulse signal
The operation of analog quantity through digital control system finally draws piston displacement value again afterwards.
When 6 Traffic control system is rushed in execution, if upper punching 6 needs downwards, adjustment, oil cylinder A-A, B-B chamber oil inlet, C-C chambers go out
Oil；If upper punching 6 needs to adjust upward, oil cylinder C-C chambers are fuel-displaced.
In order to ensure the 6 accurate location deviation ＜ 0.01mm during powder forming of upper punching, so often shaping one zero
Part, which all needs to rush position on, to be adjusted.
Valve draining pressure control system by proportional reversing valve 2-1, one 2-2 of solenoid valve, two 2-3 of solenoid valve, three 2-5 of solenoid valve,
Four 2-7 of solenoid valve, one 2-4 of safety valve, two 2-8 of safety valve, proportional pressure control valve 2-6, pressure sensor PJ2-1 etc. are formed；And lead to
Cross multiple valve blocks and integrate to be formed after a component to be installed on nearby and rush on floating table top 5, it is then stainless by two
Two output oil ports on component are connected by steel conduit with the hydraulic fluid port up and down of servo-cylinder respectively, and such system can be to servo
Oil cylinder carries out upper and lower cavity fuel feeding.Component is rushed on floating table top on being installed on nearby, its purpose is just to try to shorten servo-cylinder
Oil feed line, reduces the influence for the control accuracy that oil feed line moves servo-cylinder.System is total by the hydraulic pressure of powder forming machine
Station separates to be specialized in oil circuit and is connected with component oil inlet all the way, and being provided with that check valve 2-9 ensures on pipeline oil inlet can only be unidirectional
Fuel feeding.Proportional reversing valve 2-1, two 2-3 of solenoid valve, one 2-4 of safety valve, proportional pressure control valve 2-6, the oil return opening of two 2-8 of safety valve
A shared oil return opening is formed after valve block integrated package and passes through a pipeline and the hydraulic pressure master station fuel tank of powder forming machine again
It is connected.Hydraulic pressure master station drives one group of size oil pump P2, P3 fuel feeding coaxial and that flow is different by a servomotor M2, due to valve
Draining pressure system oil amount is little, therefore only needs low-capacity pump P3 to run.
The whole course of work is reconstituted in valve control is：The adjustment of upper punching 6 of valve control is to oil cylinder piston by proportional reversing valve 2-1
4 two-chambers carry out SERVO CONTROL into oil mass is traveled out；During using above reconstituting whole function, one 2-2 of solenoid valve, solenoid valve two are connected first
2-3 Electrical heads open valve, the oil pocket disengaging oil return line connection of oil cylinder piston 4；Connect the Electrical heads 2-1a of proportional reversing valve 2-1
Valve oil mouth P-B, T-A unicom, oil cylinder A-A, B-B chamber oil inlet, C-C chambers are fuel-displaced, and upper punching moves downward；Connect the Electrical heads of valve 2-1
2-1b hydraulic fluid port P-A, T-B unicom, oil cylinder C-C chamber oil inlets, A-A, B-B chamber are fuel-displaced；Upper punching moves downward；On rush Traffic control system amount
How much to be set according to forming technology, servo-control system according to sets requirement control the openings of sizes of proportional reversing valve 2-1 come
Reach and reconstitute whole desired value, measurement data is fed back to by magnetic grid measuring scale 2 for the offset of issuable desired value and is watched
Take control system and compensate control, reached with this on accurately and rush Traffic control system value.On driven by servomotor M2 when reconstituting whole
Dynamic ratchet pump P3 fuel feeding (P2 is in unloading condition).Due to being servo motor driven oil pump P3, therefore its pressure, flow, work
Make the time can SERVO CONTROL, also can save energy.Being reconstituted under normal circumstances whole is carried out in upper rush when mobile jib 1 moves downward, this
Shi Shangchong 6 is not also compressed powder, and the required oil pressure of the at this moment movement of drive cylinder piston 4 adjustment is relatively low, for oil cylinder
Plunger shaft causes to reconstitute changing for stroke in the leakage for being influenced be subject to powder compression stress and being possible to produce, the oil pump
It can realize that stroke is rushed on carries out micro compensation adjustment under high pressure.Machine shape power can be represented by the formula：
F=［ PPJ2.1×(SA-A+SB-B)/10（F kN, P Mpa, S cm2）
The oil cylinder of upper punching set mechanism in punching protection demoulding functions in execution, due to product in final shaping A-A, B-
The pressure of B chambers oil reaches maximum, (is usually the 1/ of final shaping pressure to reach protection to demould required pressure
100-1000), at this moment just need the oily off-load of A-A, B-B chamber to a constant value, make punching with a constant power after
It is continuous to be pressed on formed blank until cavity plate deviate from untill, protect rushed on after demoulding mobile jib under host driven quickly to
Upper movement.
After cracking, demoulding when effectively preventing product shaping due to protection demoulding functions the defects of deformation, expansion, it is into
The necessary functions of each part of shape.
Valve control upper punching protection the demoulding the course of work be：Powder compression molding terminate or pressurize at the end of solenoid valve three
2-5, than proportional pressure control valve 2-6 Electrical heads obtain electric work, the oil pressure with very high pressure that A-A, B-B chamber are formed in shaping
Setting value required by automatic deloading to a protection demoulding functions.Protection knockout press and unloading time needed for this function can lead to
The digital valve core opening degree for adjusting proportional pressure control valve 2-6 of electric-control system touch-screen is crossed to realize.Three 2-5 of break-make solenoid valve can be prevented
Proportional pressure control valve 2-6 is since oil inlet carrying pressure declines the dwell pressure at the end of shaping less than forming pressure and influences
The pressure holding effect of formation of parts.When three 2-5 of solenoid valve, proportional pressure control valve 2-6 break down and cannot work or proportional overflow
(linearity is bad during proportional pressure control valve 2-6 adjusting range lower limits) also may be used when valve 2-6 can not adjust out low value protection knockout press
Opening the Electrical heads of four 2-7 of solenoid valve makes two 2-8 of safety valve work, using the safe off-load for manually adjusting two 2-8 of safety valve
Pressure can also make oil cylinder piston obtain required protection knockout press in a short period of time, and unloading time is uncontrollable in the case
System.
It is upper punching set mechanism oil cylinder piston 4 when powder compression molding is into part suffered by piston A-A, B-B, C-C chamber it
Power is measured by pressure sensor PJ2-1 (valve control)；When the maximum plastic force of measurement is less than the setting of one 2-4 of safety valve (valve control)
Piston A-A, B-B realize hydraulic pressure cushion function during value；When the maximum plastic force of measurement is more than the setting value of one 2-4 of safety valve (valve control)
When piston A-A, B-B realize overpressure alarm function.
The oil cylinder piston 4 of upper punching set mechanism determine that journey is compressing to be also with the compressing power and energy of level pressure realizing
By the press power measurement result of pressure sensor PJ2-1 (valve control) after electric control system carries out operation program switching
Realize.
Fig. 2：The valve control numerical control that function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control is former
Manage schematic diagram.The collection, computing, all processes for performing 4 functions of the data of mechanism are shown in figure.The hydraulic system of the mechanism
Although an individual components, oil supply system shares with host and utilizes this feature when fuel feeding is not required in host, adopts
Small oil pump feed is driven to influence to rush the execution of function with servomotor, at this moment big oil pump can be at unloading condition.Number
The numerical control system of control cylinder function action in function set system is rushed in control mechanical electronic hydraulic combination drive servo powder forming machine valve control
System uses digital intelligent servo-control system, equipped with PAC cyclelogs, pressure mould analog quantity module, measurement digital operation simulation
Measure module and proportional valve control module, servopump（Shared with host hydraulic system）Control module.
Claims (8)
1. rush function set system in a kind of numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control, it is characterised in that：Bag
Include and rush mobile jib, floating table top, servo-cylinder, the valve draining pressure control system for realizing cylinder movement and measurement oil cylinder displacement
Measuring system；
Servo-cylinder includes valve piston, big piston cylinder, dustband gland, big piston and corresponding fixing screws and sealing ring；
On rush mobile jib lower part be used as valve piston cylinder barrel, big piston cylinder be used as big piston cylinder barrel；Valve piston uses screw with big piston
It is joined together to form double-piston；Big piston cylinder rushes mobile jib with and is also joined together to form double-piston cylinder body using screw；This
Sample forms one A-A of oil cylinder chamber, two B-B of oil cylinder chamber, oil cylinder chamber three C-C, tri- oil cylinder chambers, wherein one A-A of oil cylinder chamber and oil cylinder chamber two
B-B is connected, and by the hydraulic fluid port of big piston into fuel-displaced, plays the function that two oil cylinders bear press power；Three C-C of oil cylinder chamber is by big piston
Cylinder plays the role of promoting oil cylinder piston to return up into fuel-displaced；
Servo-cylinder is rushed in mobile jib on powder forming machine, and big piston bottom surface rushes floating table top with and is fitted together, and matches somebody with somebody
The oil supply system for having pressure sensor is installed on floating table top, on rush mobile jib and floating table top respectively with measuring oil cylinder displacement
The fixing end of magnetic grid measuring scale of measuring system be connected with measuring block；The digital control system of control cylinder function action is additionally mounted
In power control cabinet；
Valve draining pressure control system includes proportional reversing valve, solenoid valve one, solenoid valve two, solenoid valve three, solenoid valve four, safety valve
First, safety valve two, proportional pressure control valve and pressure sensor；
Measuring the measuring system of oil cylinder displacement includes magnetic grid measuring scale main body, magnetic grid measuring scale protective cover, magnetic grid measuring scale peace
Fill block and measuring block；Magnetic grid measuring scale, magnetic grid measuring scale protective cover are installed on magnetic grid measuring scale mounting blocks, magnetic grid measuring scale
In mounting blocks installed part float plate, float plate links together with big piston again, and measuring block is installed on big piston cylinder, big piston
Cylinder rushes mobile jib with again and links together, and when size piston motion, float plate is also and then moved, and magnetic grid measuring scale is had one
The relative displacement of mobile jib is rushed on, that is to say, that measuring block has been made displacement movement relative to magnetic grid measuring scale, so as to change
Position of the measuring block relative to magnetic grid measuring scale is become, magnetic grid measuring scale is exported after corresponding pulse signal again through digital control system
Operation of analog quantity finally draws piston displacement value.
2. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control according to claim 1
System, it is characterised in that：The digital control system of control cylinder function action uses digital intelligent servo-control system, equipped with PAC programs
Controller, pressure mould analog quantity module, measurement digital operation analog module and proportional valve control module, servo-pump control molding
Block.
3. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control according to claim 1
System, it is characterised in that：Piston is also equipped with the sealing ring of low-friction coefficient with oil cylinder.
4. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control according to claim 1
System, it is characterised in that：Big piston, valve piston outside diameter and big piston cylinder rod cavity inner wall are also welded with tin bronze layer.
5. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control according to claim 1
System, it is characterised in that：Dustband gland is installed on big piston cylinder bottom, and dustband gland is used as maintenance dustband, this is dust-proof
Circle gland can prevent big piston external diameter from being polluted from koniology in workshop.
6. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control according to claim 1
System, it is characterised in that：Valve draining pressure control system also sets up valve block, pipeline, connector, the pressure gauge of installation hydraulic component.
7. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control according to claim 1
System, it is characterised in that：The Hydraulic Elements of valve draining pressure control system integrate to form a valve draining by multiple valve blocks
Pressure control system component, valve draining pressure control system component are installed on and rush on floating table top, then pass through two stainless steel tubes
Two output oil ports on valve draining pressure control system component are connected by road with the hydraulic fluid port up and down of servo-cylinder respectively, such valve
Draining pressure control system can carry out upper and lower cavity fuel feeding to servo-cylinder.
8. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control according to claim 1
System, it is characterised in that：The fuel feeding of valve draining pressure control system and main unit hydraulic control unit system fuel feeding, it is same by a servomotor
When drive 2 small-large flows gear pump, through pressure sensor, pressure switch, oil strainer, check valve, there is provided oil sources can be used,
Then the oil sources is divided into two tunnels, all the way for main unit hydraulic control loop, all the way for above-mentioned valve draining pressure control system, oil supply pipe
Be provided with oil inlet check valve ensure can only unidirectional fuel feeding, the valve draining pressure control system when reconstituting whole function in execution,
Due to needing oil mass very little, at this moment big pump only provides oil sources in unloading condition by small pump, rushes stroke so as on and is accurately adjusted
It is whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721193142.XU CN207224666U (en) | 2017-09-18 | 2017-09-18 | Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721193142.XU CN207224666U (en) | 2017-09-18 | 2017-09-18 | Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming machine valve control |
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| Publication Number | Publication Date |
|---|---|
| CN207224666U true CN207224666U (en) | 2018-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421871A (en) * | 2020-05-21 | 2020-07-17 | 南通锻压设备如皋有限公司 | Closed type electro-hydraulic control system of hydraulic motor driven press machine |
-
2017
- 2017-09-18 CN CN201721193142.XU patent/CN207224666U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421871A (en) * | 2020-05-21 | 2020-07-17 | 南通锻压设备如皋有限公司 | Closed type electro-hydraulic control system of hydraulic motor driven press machine |
| CN111421871B (en) * | 2020-05-21 | 2024-06-07 | 南通锻压设备如皋有限公司 | Closed electrohydraulic control system of hydraulic motor driving press |
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Granted publication date: 20180413 |