CN207222939U - Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control - Google Patents
Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control Download PDFInfo
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- CN207222939U CN207222939U CN201721192617.3U CN201721192617U CN207222939U CN 207222939 U CN207222939 U CN 207222939U CN 201721192617 U CN201721192617 U CN 201721192617U CN 207222939 U CN207222939 U CN 207222939U
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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 pump control refers to numerical control (CNC) mechanical electronic hydraulic combination drive servo powder forming machine during product powder forming part forming, the mechanical motion mechanism 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 pump control hydraulic drive system for realizing cylinder movement, the measuring system for measuring oil cylinder displacement and the digital control system of control cylinder function action are rushed including on；Servo-cylinder includes valve piston, big piston cylinder, dustband gland, big piston and corresponding fixing screws and sealing ring；Pump control hydraulic drive system includes AC servo motor, double-direction gearpump, pressure sensor one, pressure sensor two, safety valve one, safety valve two, safety valve three, safety valve four, solenoid directional control valve, check valve one, check valve two, check valve three and proportional pressure control valve.
Description
Technical field
Rush what function set system was related in the utility model numerical control mechanical electronic hydraulic combination drive servo powder forming pump 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 motion mechanism 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
Function set system is rushed in shaping pump control, is four big function set systems of punching in one kind, servo-drive is mixed using mechanical electronic hydraulic
Technology, will protect the demoulding, hydraulic die cushion, on reconstitute the shaping of whole, level pressure with determine the forming mode four big function sets of selection that journey shapes
In a servo-cylinder, by electro-hydraulic closed-loop control and servo oil pump, proportional servo valve and the realization of other valve groups is driven to watch
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
Power constant one Ma 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 pump control
Following technical scheme is realized：
Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control to be included rushing mobile jib, floats
Table top, servo-cylinder, the pump control hydraulic drive system 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.
Three or three oil cylinder chamber one, oil cylinder chamber two, oil cylinder chamber oil pockets are so formed, wherein oil cylinder chamber one is connected with oil cylinder chamber two, by living greatly
The hydraulic fluid port of plug plays the function that two oil cylinders bear press power into fuel-displaced.Oil cylinder chamber three plays promotion by big piston cylinder into fuel-displaced
The effect that oil cylinder piston returns up.Piston and oil cylinder are also equipped with the sealing ring of low-friction coefficient, big piston, valve piston outside diameter with
And big piston cylinder rod cavity inner wall is also welded with tin bronze layer to reduce friction of motion raising service life and ensure piston very low
Do not produce and creep under driving force, it is ensured that above rush Adjustment precision and adjustment is stablized.Dustband gland is installed on big piston cylinder bottom,
Dustband gland is used as maintenance dustband, which can prevent big piston external diameter from being polluted from koniology in workshop.
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 A 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；Measure the numerical control of oil cylinder displacement
System is additionally installed in power control cabinet.
Pump control hydraulic drive system includes AC servo motor, double-direction gearpump, pressure sensor one, pressure sensor
2nd, safety valve one, safety valve two, safety valve three, safety valve four, solenoid directional control valve, check valve one, check valve two, check valve three
And proportional pressure control valve.Pump control hydraulic drive system be additionally provided with the hydraulic oil container for installing above-mentioned hydraulic component, valve block, pipeline,
Connector, pressure gauge etc..
The Hydraulic Elements of above-mentioned pump control hydraulic drive system integrate to form a pump control hydraulic by multiple valve blocks
Drive system module is rushed on floating table top on being installed on nearby, then by two stainless steel pipes by pump control hydraulic drive system
Two output oil ports on component are connected with the hydraulic fluid port up and down of servo-cylinder respectively, and such system can carry out servo-cylinder
Upper and lower cavity fuel feeding.Pump control hydraulic drive system module is rushed on floating table top on being installed on nearby.Its purpose is just to try to shortening and watches
The oil feed line of oil cylinder is taken, reduces the influence for the control accuracy that oil feed line moves servo-cylinder.Pump control hydraulic drive system
The fuel tank of component is installed at the top of servo powder forming machine, is connected respectively with oil pump with two oil pipes, pacified on pipeline oil inlet
The oil suction state of control oil pump is distinguished equipped with check valve two, check valve three, filter one, the filter two of the mouth of pipe can ensure to suck
The oily cleannes of oil pump.Safety valve one, proportional pressure control valve, safety valve two, safety valve three, the oil return opening of safety valve four pass through valve
Xing Cheng mono- Ma share oil return opening and are connected again by a pipeline with fuel tank after block integrated package.
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 pump 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 control module, the movement travel for control cylinder piston
The conjunction of function set system design is rushed in the utility model numerical control mechanical electronic hydraulic combination drive servo powder forming pump 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.
It is more real using mechanical structure than former mechanical powder forming machine since four big functions of upper punching are realized using servo-cylinder
Now the complete machine of four big functions of upper punching highly shortens 1-2 meters (referring to the powder forming machine that plastic force is more than 2000kN).
Traffic control system is rushed on former mechanical powder forming machine using motor driving worm gear pairs, adjusts whole Silk bars to be mounted in worm gear pairs
Worm gear in, Gu the screw thread in Ci Silk bars 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 the progress repairing of Zeng Jia mono- Ma recharging oil devices 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 pump control；
Fig. 2 is the pump control numerical control original that function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump 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 pump control includes
On rush mobile jib 1, floating table top 3, servo-cylinder, the pump control hydraulic drive 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 pockets are so formed, wherein
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, plays the work(that two oil cylinders bear press power
Energy.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 oil 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 A 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；Measure oil cylinder
The digital control system of displacement is additionally installed in power control cabinet.
Pump control hydraulic drive system includes AC servo motor M1, double-direction gearpump P, one PJ1-1 of pressure sensor, pressure
Two PJ1-2 of sensor, one 1-1 of safety valve, two 1-4 of safety valve, three 1-6 of safety valve, four 1-7 of safety valve, solenoid directional control valve 1-5,
One 1-3 of check valve, two 1-8 of check valve, check valve three 1-9 and proportional pressure control valve 1-2.Pump control hydraulic drive system is additionally provided with peace
Load onto the hydraulic oil container for stating hydraulic component, valve block, pipeline, connector, pressure gauge etc..
The Hydraulic Elements of above-mentioned pump control hydraulic drive system integrate to form a pump control hydraulic by multiple valve blocks
Drive system module is rushed on floating table top 5 on being installed on nearby, then by two stainless steel pipes that two on component are defeated
Oil outlet is connected with the hydraulic fluid port up and down of servo-cylinder respectively, and such system can carry out upper and lower cavity fuel feeding to servo-cylinder.Pump
Draining pressure drive system module is installed on rushes on floating table top nearby.Its purpose is just to try to shorten the fuel feed pump of servo-cylinder
Road, reduces the influence for the control accuracy that oil feed line moves servo-cylinder.The fuel tank of pump control hydraulic drive system is installed on and watches
Take at the top of powder forming machine, be connected respectively with oil pump with two oil pipes, two 1-8 of check valve, list are installed on pipeline oil inlet
To the oil suction state of three 1-9 of valve difference control oil pumps, one G1 of filter, two G2 of filter of the mouth of pipe can ensure to suck the oil of oil pump
Cleannes.The oil return of one 1-1 of safety valve, proportional pressure control valve 1-2, two 1-4 of safety valve, three 1-6 of safety valve, four 1-7 of safety valve
Mouth Xing Cheng mono- Ma after valve block integrated package share oil return opening and are connected again by a pipeline with fuel tank.
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 pump 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 control module, the movement travel for control cylinder piston.
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 A that aggregation system is rushed in servopump control on the left of Fig. 1.The oil cylinder of upper punching set mechanism leads to
It is straight the purpose is to rush mobile jib reduce on the premise of specified shaping pressure and plastic force is ensured as far as possible on frequently with double-piston cylinder
Footpath.To rush Adjustment precision and adjustment stability in guarantee, pairing plug oil cylinder is designed according to servo-cylinder standard, it is desirable to for oil pressure
When power is 0.3Mpa, oil cylinder piston do not allow produce crawling exercises, on rush Traffic control system resolution control 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.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 and cylinder
The sealing ring of low-friction coefficient is also equipped with, big piston 4d, valve piston 4a outside diameters and big piston cylinder 4b rod cavity inner walls are also welded with tin
Bronze layer is 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 upper punching
Adjustment precision and adjustment are stablized.Dust-proof ring cover 4c is used as maintenance dustband, which can prevent big piston 4d outside diameters from car
Between the pollution of middle koniology.
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.
The measuring system of oil cylinder displacement is measured 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.Magnetic grid measuring scale 2a, magnetic grid measuring scale protective cover 2b are surveyed installed in magnetic grid
On gage mounting blocks 2c, in magnetic grid measuring scale mounting blocks 2c installed parts float plate 5, float plate 5 is connected to one with big piston 4d again
Rise, measuring block 3 is installed on big piston cylinder 4b, and big piston cylinder 4b rushes mobile jib 1 again with and links together, when size piston motion
When float plate 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 measurement
Block 3 has made displacement movement relative to magnetic grid measuring scale, so as to change position of the measuring block 3 relative to magnetic grid measuring scale, magnetic grid
The operation of analog quantity through digital control system finally draws piston displacement value again after the corresponding pulse signal of measuring scale output.
In execution during the adjustment of punching 6 stroke, if upper punching 6 needs adjustment downwards, one A-A of oil cylinder chamber, two B-B chambers of oil cylinder chamber
Oil inlet, three C-C chambers of oil cylinder chamber are fuel-displaced；If upper punching 6 needs to adjust upward, three C-C of oil cylinder chamber is 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.
Reconstituting the whole course of work in the utility model pump control is：The adjustment of upper punching 6 of pump control is by with two-way disengaging
The servo gear pump P1 of oily function carries out SERVO CONTROL to 4 two-chamber of oil cylinder piston into oil mass is traveled out；The oil cylinder when motor rotates forward
A-A, B-B chamber oil inlet, C-C chambers are fuel-displaced；Upper punching moves downward, and the oil cylinder C-C chamber oil inlets when motor reversal, A-A, B-B chamber goes out
Oil, upper punching move downward；On rush how much Traffic control system amount will set according to forming technology, servo-control system is according to sets requirement
The rotating number of turns of control servomotor M reconstitutes whole desired value to reach, and is deviated for issuable desired value by magnetic
Measurement data is fed back to servo-control system and compensates control by grid measuring scale 2, is reached with this on accurately and is rushed Traffic control system
Value.Due to be servo motor driven oil pump thus adjustment needed for pressure, flow, the working time can SERVO CONTROL, can also save
Energy.Being reconstituted under normal circumstances whole is carried out in upper rush when mobile jib 1 moves downward, and at this moment upper punching 6 is not also compressed powder,
The oil pressure that the movement adjustment of drive cylinder piston 4 needs is relatively low, has for oil cylinder piston chamber being influenced be subject to powder compression stress
Issuable leakage causes to reconstitute the change of stroke, the oil pump can also realize under high pressure rushed on stroke carry out it is micro
Compensation adjustment.When overflow valve 1.1 is used for controlling the startup pressure of servo gear pump P and above rushing at lower adjustment in this course of work
Yi Ma back pressures are produced, make to reconstitute that whole size is more accurate, stablizes；The pressure of back pressure is measured by pressure sensor PJ1-1；If adjust
Whole back pressure is big, then adjusts that required energy consumption is big, and the maximum plastic force of machine can decrease, but adjusts the desired value of data more
It is precise and stable；Conversely, if the back pressure of adjustment is small, adjust that required energy consumption is small, the maximum plastic force of machine is influenced it is smaller, but
The precision and stability for adjusting the desired value of data is not so good as the former.Machine shape power can be represented by the formula：
F=［ PPJ1.2×(SA-A+SB-B)-PpJ1.1×Sc-c］/10（F kN, P Mpa, S cm2）
The oil cylinder of function set system is rushed in the utility model numerical control mechanical electronic hydraulic combination drive servo powder forming pump control
In punching protection demoulding functions in execution, due to product, in final shaping, the pressure of A-A, B-B chamber oil reaches maximum, in order to
Reach protection and demould required pressure (being usually the 1/100-1000 of final shaping pressure), at this moment just need A-A, B-
The oily off-load of B chambers makes to rush the constant power of Yi mono- Ma and continues to be pressed on formed blank until abjection to a constant value
Untill cavity plate, protect on after demoulding and rush mobile jib fast upward motion under host driven.
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.
Pumping the course of work of the upper punching protection demoulding of control is：Powder compression molding terminate or pressurize at the end of ratio pressure regulation
Valve 1-2 Electrical heads obtain electric work, and the oil pressure with very high pressure that A-A, B-B chamber are formed in shaping is passed through one 1- of check valve
3 opening makes the pressure set points required by its automatic deloading to a protection demoulding functions；Two 1-4 of safety valve and check valve one
The combination of 1-3 can prevent proportional dump valve 1-2 since oil inlet carrying pressure is less than forming pressure and makes the guarantor at the end of shaping
Pressure pressure declines and influences the pressure holding effect of formation of parts.Protection knockout press and unloading time needed for protection demoulding functions can lead to
The digital valve core opening degree for adjusting proportional dump valve 1-2 of electric-control system touch-screen is crossed to realize.Since pump controls reason, safety valve one
The effect of 1-1 makes piston C-C chambers have a back pressure, so required pressure=(A-A, B-B) cavity pressure-C-C chambers of the protection demoulding
Pressure.(ratio tune when when proportional dump valve 1-2 breaks down and cannot work or low value protection knockout press can not be adjusted out
The linearity is bad during pressure valve 1-2 adjusting range lower limits) it can also make the Electrical heads opening of solenoid directional control valve 1-5 the valve is worked, adopt
Also oil cylinder piston can be made to obtain required protection in a short period of time with the safe pressure unloading for manually adjusting three 1-6 of safety valve
Knockout press, unloading time is uncontrollable in the case.
The oil cylinder piston 4 of function set system is rushed in powder in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control
Power suffered by compression molding into piston A-A, B-B, C-C chambers during part passes through one PJ1-1 of pressure sensor, pressure sensor two
PJ1-2 (pump control) measurement；Piston A-A, B-B when the maximum plastic force of measurement is less than the setting value of four 1-7 of safety valve (pump control)
Realize hydraulic pressure cushion function；When the maximum plastic force of measurement is more than four 1-7 of safety valve (pump control)) setting value when piston A-A, B-B
Realize overpressure alarm function.
The oil cylinder piston 4 that function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control is being realized
Determine that journey is compressing and the compressing power and energy of level pressure is also to be measured by the press power of pressure sensor PJ1-2 (pump control)
As a result can be achieved after electric control system carries out operation program switching.
Fig. 2：Function set systems pumps control NC blanking is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control
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 is
One individual components, double-direction gearpump fuel feeding is specially driven by a servomotor.Numerical control mechanical electronic hydraulic combination drive servo powder
The digital control system that control cylinder function action in function set system is rushed in shaping pump control uses digital intelligent SERVO CONTROL system
System, equipped with PAC cyclelogs, pressure mould analog quantity module, measurement digital operation analog module and proportional valve control module,
Servopump control module, the movement travel for control cylinder piston.
Claims (7)
1. rush function set system in a kind of numerical control mechanical electronic hydraulic combination drive servo powder forming pump control, it is characterised in that：Bag
Include and rush mobile jib, floating table top, servo-cylinder, the pump control hydraulic drive 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, 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 connects with big piston screw
It is connected together to form double-piston；Big piston cylinder rushes mobile jib with and is joined together to form double-piston cylinder body, such shape using screw
Into three or three oil cylinder chamber one, oil cylinder chamber two, oil cylinder chamber oil pockets, wherein oil cylinder chamber one is connected with oil cylinder chamber two, by the oil of big piston
Mouthful into fuel-displaced, the function that two oil cylinders bear press power is played, oil cylinder chamber three promotes oil cylinder to live by big piston cylinder into fuel-displaced play
Fill in the effect returned up；
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 A 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 the magnetic grid measuring scale of the measuring system of amount is connected with measuring block；In addition the digital control system of control cylinder function action is pacified
In power control cabinet；
Pump control hydraulic drive system includes AC servo motor, double-direction gearpump, pressure sensor one, pressure sensor two, peace
Full valve one, safety valve two, safety valve three, safety valve four, solenoid directional control valve, check valve one, check valve two, check valve three and ratio
Overflow valve；
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 also follows movement magnetic grid measuring scale is had a phase
The relative displacement of mobile jib is rushed on, measuring block has been made displacement movement relative to magnetic grid measuring scale, so as to change measuring block
Relative to the position of magnetic grid measuring scale, magnetic grid measuring scale exports after corresponding pulse signal the operation of analog quantity through digital control system again
Finally draw piston displacement value.
2. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming pump 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, the movement travel for control cylinder piston.
3. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control according to claim 1
System, it is characterised in that：Piston is also equipped with the sealing ring of low-friction coefficient, big piston, valve piston outside diameter and big piston with oil cylinder
Cylinder rod cavity wall is also welded with tin bronze layer.
4. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming pump 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, can prevent
Big piston external diameter pollutes from koniology in workshop.
5. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control according to claim 1
System, it is characterised in that：Pump control hydraulic drive system is additionally provided with the installation hydraulic oil container of hydraulic component, valve block, pipeline, connects
Head, pressure gauge.
6. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control according to claim 1
System, it is characterised in that：The Hydraulic Elements of pump control hydraulic drive system integrate to form a pump draining by multiple valve blocks
Pressure drive system module is rushed on floating table top on being installed on nearby, then by two stainless steel pipes by pump control hydraulic drivetrain
Two output oil ports on system component are connected with the hydraulic fluid port up and down of servo-cylinder respectively, such pump control hydraulic drive system system
Upper and lower cavity fuel feeding can be carried out to servo-cylinder.
7. rush function set system in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control according to claim 1
System, it is characterised in that：The fuel tank of pump control hydraulic drive system be installed on servo powder forming machine at the top of, with two oil pipes respectively with
Oil pump is connected, and check valve two is provided with pipeline oil inlet, check valve three distinguishes the oil suction state of control oil pump, the mistake of the mouth of pipe
Filter one, filter two can guarantee that the oily cleannes of suction oil pump, safety valve one, proportional pressure control valve, safety valve two, safety valve
3rd, the oil return opening of safety valve four Xing Cheng mono- Ma after valve block integrated package share oil return opening again by a pipeline and fuel tank phase
Even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192617.3U CN207222939U (en) | 2017-09-18 | 2017-09-18 | Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192617.3U CN207222939U (en) | 2017-09-18 | 2017-09-18 | Function set system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control |
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| CN207222939U true CN207222939U (en) | 2018-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649680A (en) * | 2017-09-18 | 2018-02-02 | 南京东部精密机械有限公司 | Function aggregation system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control |
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2017
- 2017-09-18 CN CN201721192617.3U patent/CN207222939U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649680A (en) * | 2017-09-18 | 2018-02-02 | 南京东部精密机械有限公司 | Function aggregation system is rushed in numerical control mechanical electronic hydraulic combination drive servo powder forming pump control |
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