CN106734460A - Electrichydraulic control press with hydraulically-damped controlling organization - Google Patents
Electrichydraulic control press with hydraulically-damped controlling organization Download PDFInfo
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- CN106734460A CN106734460A CN201611035938.2A CN201611035938A CN106734460A CN 106734460 A CN106734460 A CN 106734460A CN 201611035938 A CN201611035938 A CN 201611035938A CN 106734460 A CN106734460 A CN 106734460A
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- control
- piston
- fluid pressure
- chamber
- control unit
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Abstract
The invention discloses a kind of electrichydraulic control press with hydraulically-damped controlling organization, for stamped workpieces, including executing agency and for the executing agency provides pressure and controls the hydraulic control of the executing agency；Hydraulic control includes：First, second and third fluid pressure line；Pressure-reducing valve；First control unit；Booster body；Second control unit；Hydraulically-damped controlling organization.The booster body of hydraulic control coordinates with hydraulically-damped controlling organization so that punch rod is when third trip section is entered so that workpiece occurs elastic-plastic deformation, pressure is constantly raised, so as to meet workpiece in elastic-plastic deformation to pressure gradually increased requirement, because hydraulic control of the invention causes that punch rod meets three changes of trip segment pressure, so that the workpiece stiffness for stamping out is preferably, and the scrappage of stamped workpieces is relatively low.
Description
Technical field
The present invention relates to electro-mechanical arts, more particularly to a kind of electrichydraulic control forcing press with hydraulically-damped controlling organization
Tool.
Background technology
In the prior art, punching press is carried out to workpiece and generally utilizes two kinds of power forms, one is as dynamic using machine driving
Power, i.e. machine power；Two is as power, i.e. hydraulic power using hydraulic drive.Generally, reduce when workpiece deforms, and workpiece
Elastoplasticity modulus it is smaller, workpiece deformation needed for pressure it is smaller when, it is more suitable using machine power because machine power makes
The punching press action for obtaining punch rod is very fast.When workpiece deformation is larger, and the elastoplasticity modulus of workpiece is larger, pressure needed for workpiece deformation
It is more suitable using hydraulic power when larger, because hydraulic power can provide larger pressure such that it is able to become workpiece
Shape is to final preset shape, and the mechanical property of the workpiece after punching press is preferable.
Engineers and technicians thought in the past, and during workpiece Pressing Deformation, workpiece need be only limited by constant stamping press i.e.
Shaping can be completed, however, applicant is had found using elastic plastic theory after analysis and summary in substantial amounts of shock pressure experiments, in punching press
Cheng Zhong, workpiece has the deformations in two stages, the i.e. simple elastic deformation of starting stage and to the elastoplasticity after final molding
Mixed deformation, in the deformation process of starting stage, constant pressure can just make workpiece that constant deformation occurs, and when follow-up
The elastic-plastic deformation stage, it is necessary to gradual supercharging can just make workpiece continue to deform so that final molding.In order that workpiece can
Final molding, engineers and technicians actually punch rod is disposed above elastic-plastic deformation all the time to the pressure of workpiece needed for pressure
Power, and the pressure is kept constant (because engineers and technicians think that whole deformation pressure process is constant), so that ability
Make workpiece punch forming, so that workpiece is in the elastic deformation of starting stage, the pressure being subject to is much larger than required pressure, so
And, the constant pressure higher makes the deformation in the stage very fast, so as to cause the stage to be unable to homogeneous deformation, can not in the stage
Homogeneous deformation causes shaping workpiece mechanical property poor, and such as rigidity is poor, or punching press failure.
Because technical staff thinks that stamped workpieces only need constant pressure higher, therefore, engineers and technicians are setting
When counting or selecting mechanically or hydraulically power, punch rod need to be only set to keep constant forced feed higher.Therefore, existing skill
The hydraulic system for driving punch rod in art can only provide constant pressure to punch rod, according to the foregoing description of applicant
Understand, the workpiece mechanics stamped out using the hydraulic system is poor.
According to the foregoing description of applicant, punch rod should have three trip segments carrying out punching course, i.e. punch rod enter
Make elastic deformation trip segment (second stroke of workpiece elastic deformation to idle stroke section (the first trip segment) to workpiece, punch rod
Section) and punch rod make workpiece that elastic-plastic deformation and final stamping forming elastic-plastic deformation trip segment (third trip to occur
Section).
Additionally, the hydraulic system for being used for punching press in the prior art also has the disadvantages that：
1st, the backhaul control of punch rod is complicated, and backhaul reaction is not sensitiveer.
2nd, during punch rod backhaul, opening speed is unstable, causes each return interval different.
3rd, the first stage of punch rod and second stage feed speed are unstable, and pressure change response is slower.
The content of the invention
For above-mentioned technical problem present in existing technology, of the invention implementing can solve the problem that above-mentioned one there is provided one kind
Individual or Railway Project the electrichydraulic control press with hydraulically-damped controlling organization.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of electrichydraulic control press with hydraulically-damped controlling organization, for stamped workpieces, including executing agency
And for the executing agency provides pressure and controls the hydraulic control of the executing agency；Wherein：
The executing agency includes performing cylinder body, be arranged in the execution cylinder body and the execution cylinder body being divided into left chamber
The execution piston of room and right chamber room and be connected with the execution piston and from the left chamber stretch out for stamped workpieces
Punch rod, the punch rod have be fed to the first trip segment of absorption surface, by workpiece punching press to initial deformation state
Second trip segment and by workpiece stamping forming third trip section；
Hydraulic control includes：
First, second and third fluid pressure line, three is connected with hydraulic system；
Pressure-reducing valve, it is arranged on the first fluid pressure line；
First control unit, its according to the trip segment of the punch rod control the first fluid pressure line and the second fluid pressure line with
The break-make of the right chamber room, so that when the punch rod feeds in the first trip segment, first fluid pressure line passes through first
Connecting pipeline and the right chamber, it is described when the punch rod is fed to the second trip segment from first trip segment
Second fluid pressure line passes through the first connecting pipeline and the right chamber；
Booster body, it includes that reducing plunger shaft, first be arranged in the diameter segment of the reducing plunger shaft live
The second piston that fill in, is arranged in the larger-diameter section of the reducing plunger shaft, it is fixed on the first company stated on first piston
Bar and the second connecting rod for being fixed in the second piston and being oppositely arranged with the first connecting rod, wherein, described first lives
Reducing plunger shaft is divided into path chamber, big footpath chamber and middle part chamber, the first connecting rod by plug and the second piston
It is located in the middle part chamber with the second connecting rod, the 3rd fluid pressure line leads to the big footpath chamber, the path chamber
Room passes through the second connecting pipeline and the right chamber；
Second control unit, it is arranged on the 3rd fluid pressure line, and second control unit is according to the punching press
The trip segment of bar controls the break-make of the 3rd fluid pressure line, so that when the punch rod is fed to the third line from the second trip segment
During journey section, the 3rd fluid pressure line conducting；
Hydraulically-damped controlling organization, buffering cylinder body that it includes the end for being fixed on the first connecting rod, be fixed on it is described
The damper piston in the buffering cylinder body is simultaneously stretched into the end of second connecting rod, wherein, the damper piston and the buffering cylinder body
A buffer chamber is surrounded, the cushion chamber falls are provided with for the buffer spring against the damper piston, the cushion chamber
Room is connected by choke valve with accumulator, and the middle part chamber is connected with the accumulator, and the highest of the accumulator limits pressure
Pressure of the power less than second pipeline.
Preferably, first control unit is hydraulic directional valve, and the valve element of the hydraulic directional valve has makes described the
One fluid pressure line simultaneously makes second fluid pressure line disconnected with the right chamber room simultaneously by the first connecting pipeline with the right chamber room
The first position opened and second fluid pressure line is set to connect the first connecting pipeline and the right chamber and while make institute
State the second place that the first fluid pressure line disconnects with the right chamber room；The valve element of the hydraulic directional valve by respectively with the left side
First control piper of chamber and with the control of the second control piper of the right chamber in first position and second
Switch between position, so that when the punch rod is fed to the second trip segment from the first trip segment, the hydraulic directional valve
Valve element switches to the second place by first position.
Preferably, second control unit is Mechanical Driven reversal valve, and the valve element of the Mechanical Driven reversal valve has
Make the first position that the 3rd fluid pressure line is turned on and the second place for disconnecting the 3rd fluid pressure line, it is described with fluid power
The electrichydraulic control press of buffer control mechanism also includes trigger mechanism, and the trigger mechanism includes being changed with the Mechanical Driven
Connected to the valve element of valve and the push rod stretched out towards the punch rod direction and the first protuberance being arranged in the punch rod,
First protuberance extends the distance of third trip section in the direction of feed of the punch rod, with when the punch rod from the
When two trip segments are fed to third trip section, first protuberance pushes against the push rod so that the push rod drives the machinery
The valve element of reversal valve is driven to switch to first position from the second place.
Preferably, the electrichydraulic control press with hydraulically-damped controlling organization also includes trigger switch and institute
The 3rd control unit and the 4th control unit of trigger switch electrical connection are stated, is additionally provided with the piston and is stretched out the right chamber room
Backhaul control-rod, the second protuberance for triggering the trigger switch, the described 3rd are provided with the backhaul control-rod
Control unit is arranged on first connecting pipeline, and the 3rd control unit has makes the first connecting pipeline conducting
First state and make that first connecting pipeline disconnects and the second state that make the right chamber room and fuel tank conducting, described the
Four control units are arranged on first control piper, and the 4th control unit has turns on first control piper
First state and make the second state that first control piper disconnects, when the punch rod completes third trip section,
Second protuberance triggers the trigger switch so that the 3rd control unit switches to the second state by its first state,
The 4th control unit is set to switch to the second state by first state；First fluid pressure line by third connecting pipe with
Left chamber's connection.
Preferably, the 3rd control unit and the 4th control unit are solenoid directional control valve.
Compared with prior art, the beneficial effect of the electrichydraulic control press with hydraulically-damped controlling organization of the invention
It is really：The booster body of hydraulic control and hydraulically-damped controlling organization coordinate cause punch rod enter third trip section with
When making workpiece that elastic-plastic deformation to occur, pressure is constantly raised, and pressure is gradually increased in elastic-plastic deformation so as to meet workpiece
Requirement, because hydraulic control of the invention causes that punch rod meets three changes of trip segment pressure, so that punching press
The workpiece stiffness for going out is preferable, and the scrappage of stamped workpieces is relatively low.
The aperture of the choke valve is sized to control first piston and second piston to be in the time of differential state, also controls
The displacement that first piston and second piston are advanced when in differential state, when being reacted to punch rod, i.e. choke valve can be controlled
Punch rod unit displacement (feeding displacement) processed is to the increment rate of workpiece pressure, it is also possible to control the punch rod unit interval to workpiece pressure
The increment rate of power.So as to control workpiece in the increase rate of change of the requirement pressure in elastic-plastic deformation stage, so that punching press is not
With material and the workpiece of size, it is allowed to be molded.
Hydraulic control in electrichydraulic control press with hydraulically-damped controlling organization of the invention relative to
Hydraulic control of the prior art, can more meet the actual requirement of workpiece deformation, and the workpiece of punching press is better than using existing
The workpiece that the hydraulic control of technology stamps out.
Brief description of the drawings
Fig. 1 is the structural representation of the electrichydraulic control press with hydraulically-damped controlling organization of the invention.
In figure：
The fluid pressure lines of 1- first；The fluid pressure lines of 2- second；The fluid pressure lines of 3- the 3rd；The connecting pipelines of 4- first；5- second connects
Siphunculus road；6- pressure-reducing valves；The control pipers of 7- first；The control pipers of 8- second；9- third connecting pipes；The control units of 10- first；
The control units of 11- second；The control units of 12- the 3rd；The control units of 13- the 4th；14- first pistons；15- second pistons；16-
Two connecting rods；17- path chambers；The big footpath chambers of 18-；19- middle parts chamber；20- performs cylinder body；21- performs piston；22- punch rods；
23- backhaul control-rods；24- left chamber；25- right chambers room；26- buffer chambers；27- buffer springs；The protuberances of 28- first；29- is pushed up
Bar；30- first connecting rods；The protuberances of 31- second；32- trigger switch；33- fuel tanks；34- choke valves；35- damper pistons；36- stores
Can device.
Specific embodiment
To make those skilled in the art be better understood from technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula elaborates to the present invention.
Before the electrichydraulic control press with hydraulically-damped controlling organization of the invention is introduced, introduce be stamped first
The process of workpiece Pressing Deformation, and stamped workpieces punch rod 22 (or pressure head) whole punching course several trip segments
So as to deeply understand technical scheme and friendship effect.
Traditionally, workpiece needs to be subject to enough and constant pressure i.e. plastic, however, workpiece is in practical distortion
In, as pressure needed for the deformation of different phase is different.Workpiece experiences two kinds of deformations to shaping altogether from blank, and one is the starting stage
Simple elastic deformation, now, the enough constant pressure of 22 need of punch rod can make workpiece carry out elastic deformation；Two are
Elastoplasticity mixed deformation, both there is elastic deformation in this stage has in the presence of being plastically deformed, now, colleague of the punch rod 22 in feeding
Need gradually to increase pressure, so that workpiece final molding.
From the foregoing, it will be observed that for punch rod 22 needs that there is three trip segments, i.e. punch rod 22 to be fed to work in punching course
Idle stroke section (the first trip segment), the punch rod 22 of part make the elastic deformation trip segment (the second trip segment) of workpiece elastic deformation with
And punch rod 22 makes workpiece that elastic-plastic deformation and final stamping forming elastic-plastic deformation trip segment (third trip section) to occur.
In the first trip segment, actuating unit (can be machine power or hydraulic power) only need to be for punch rod 22 provides motion
, in the second trip segment, actuating unit will provide certain constant pressure so that workpiece elastic deformation for punch rod 22,
Third trip section, actuating unit will be the pressure that punch rod 22 provides the trip segment of start bit second, and with the feeding of punch rod 22
The pressure that pressure gradually rises, so that workpiece realizes elastic-plastic deformation.
The present invention is based on foregoing description, there is provided one kind enables punch rod 22 to provide corresponding pressure in three trip segments
The electrichydraulic control press with hydraulically-damped controlling organization of power
As shown in figure 1, a kind of embodiment of the invention discloses that electrichydraulic control pressure with hydraulically-damped controlling organization
Machinery, for stamped workpieces, including executing agency and for executing agency provides pressure and controls the hydraulic control of executing agency
Mechanism；Wherein：Executing agency includes that it is left chamber 24 to perform cylinder body 20, be arranged in execution cylinder body 20 and will perform 20 points of cylinder body
The rushing for stamped workpieces for being connected and being stretched out from left chamber 24 with the execution piston 21 of right chamber room 25 and with execution piston 21
Depression bar 22, punch rod 22 has and is fed to and the first trip segment of absorption surface, by workpiece punching press to initial deformation state the
Two trip segments and by workpiece stamping forming third trip section；Hydraulic control includes：First, second and third fluid pressure line, three
Person is connected with hydraulic system；Pressure-reducing valve 6, it is arranged on the first fluid pressure line 1；First control unit 10, it is according to punching press
The trip segment of bar 22 controls the break-make of the first fluid pressure line 1 and the second fluid pressure line 2 and right chamber room 25, so that when punch rod 22 exists
When first trip segment feeds, the first fluid pressure line 1 is connected by the first connecting pipeline 4 with right chamber room 25, when punch rod 22 from the
When one stroke section is fed to the second trip segment, the second fluid pressure line 2 is connected by the first connecting pipeline 4 with right chamber room 25；Supercharging
Mechanism, it includes reducing plunger shaft, the first piston 14 being arranged in the diameter segment of reducing plunger shaft, is arranged on reducing work
The second piston 15 in the larger-diameter section in chamber is filled in, the first connecting rod 30 stated on first piston 14 is fixed on and is fixed on the
The second connecting rod 16 being oppositely arranged on two pistons 15 and with first connecting rod 30, wherein, first piston 14 and second piston 15 will become
Footpath plunger shaft is divided into path chamber 17, big footpath chamber 18 and middle part chamber 19, first connecting rod 30 and second connecting rod 16 to be located at
In middle part chamber 19, the 3rd fluid pressure line 3 leads to big footpath chamber 18, and path chamber 17 is by the second connecting pipeline 5 and right chamber room
25 connections；Second control unit 11, it is arranged on the 3rd fluid pressure line 3, row of second control unit 11 according to punch rod 22
The break-make of journey section the 3rd fluid pressure line 3 of control, so that when punch rod 22 is fed to third trip section from the second trip segment, the 3rd
Fluid pressure line 3 is turned on；Hydraulically-damped controlling organization, buffering cylinder body that it includes the end for being fixed on first connecting rod 30, is fixed on
The damper piston 35 in buffering cylinder body is simultaneously stretched into the end of second connecting rod 16, wherein, damper piston 35 surrounds one with buffering cylinder body
It is provided with buffer chamber 26, buffer chamber 26 for the buffer spring 27 against damper piston 35, buffer chamber 26 is by section
Stream valve 34 is connected with accumulator 36, and middle part chamber 19 is connected with accumulator 36, and the highest of accumulator 36 limits pressure and is less than second
The pressure of pipeline.
In a preferred embodiment of the invention, the first control unit 10 is hydraulic directional valve, the valve of hydraulic directional valve
Core has to be made the first fluid pressure line 1 by the first connecting pipeline 4 and right chamber room 25 and while makes the second fluid pressure line 2 and right chamber room
25 first positions for disconnecting and make the second fluid pressure line 2 connect the first connecting pipeline 4 to be connected with right chamber room 25 and while make the
The second place that one fluid pressure line 1 disconnects with right chamber room 25；The valve element of hydraulic directional valve passes through what is connected with left chamber 24 respectively
The control of the first control piper 7 and the second control piper 8 connected with right chamber room 25 is cut between the first position and the second position
Change, so that when punch rod 22 is fed to the second trip segment from the first trip segment, the valve element of hydraulic directional valve is cut by first position
Shift to the second place.
In a preferred embodiment of the invention, the second control unit 11 is Mechanical Driven reversal valve, and Mechanical Driven is changed
There is the first position for turning on the 3rd fluid pressure line 3 and the second place for disconnecting the 3rd fluid pressure line 3 to the valve element of valve,
Electrichydraulic control press with hydraulically-damped controlling organization also includes trigger mechanism, and trigger mechanism includes being changed with Mechanical Driven
Connected to the valve element of valve and the push rod 29 stretched out towards the direction of punch rod 22 and the first protuberance 28 being arranged in punch rod 22,
First protuberance 28 extends the distance of third trip section in the direction of feed of punch rod 22, with when punch rod 22 from the second stroke
When section is fed to third trip section, the pushing and pressing push rod 29 of the first protuberance 28 is so that the driving mechanical of push rod 29 drives the valve element of reversal valve
First position is switched to from the second place.
In a preferred embodiment of the invention, the electrichydraulic control press with hydraulically-damped controlling organization is also wrapped
The 3rd control unit 12 and the 4th control unit 13 that trigger switch 32 is electrically connected with trigger switch 32 are included, is also set up on piston
There is the backhaul control-rod 23 for stretching out right chamber room 25, the second protrusion for triggering trigger switch 32 is provided with backhaul control-rod 23
Portion 31, the 3rd control unit 12 is arranged on the first connecting pipeline 4, and the 3rd control unit 12 has leads the first connecting pipeline 4
Logical first state and make that the first connecting pipeline 4 disconnects and the second state that make right chamber room 25 and the conducting of fuel tank 33, the 4th
Control unit 13 is arranged on the first control piper 7, and the 4th control unit 13 has the first shape for turning on the first control piper 7
State and make the second state that the first control piper 7 disconnects, when punch rod 22 completes third trip section, the second protuberance 31 is touched
Hair trigger switch 32 makes the 4th control unit 13 by the so that the 3rd control unit 12 switches to the second state by its first state
One state switches to the second state；First fluid pressure line 1 is connected by third connecting pipe 9 with left chamber 24.
In a preferred embodiment of the invention, the 3rd control unit 12 and the 4th control unit 13 are electromagnetic switch
Valve.
Technical scheme and beneficial effect are understood for convenience, are described below of the invention with hydraulically-damped
The electrichydraulic control press course of work of controlling organization.
Before the electrichydraulic control press course of work with hydraulically-damped controlling organization is introduced, introduce first
The supercharging principle and fluid power of the booster body in the electrichydraulic control press with hydraulically-damped controlling organization of the invention
The operation principle of buffer control mechanism, to be better understood from the electrichydraulic control press course of work of the invention.
If first piston 14 and second piston 15 are subject to the thrust of hydraulic oil and stress balance, and the He of first piston 14
Both second piston 15 be rigidly connected, i.e., first piston 14 and second piston 15 are connected by a connecting rod, the He of first piston 14
Second piston 15 is synchronized with the movement all the time, and the hydraulic oil in path chamber 17 should be equal to big footpath chamber to the thrust of first piston 14
To the thrust of second piston 15, i.e. (wherein, P1 is the pressure of the hydraulic oil in path chamber 17 to P1S1=P2S2 for hydraulic oil in 18
Power, P2 is the pressure of the hydraulic oil in big footpath chamber 18, and S1 is the area of section of first piston 14；S2 cuts for second piston 15
Face area), due to the area of section S1s of the area of section S2 more than first piston 14 of second piston 15, so that path chamber 17
The pressure P1 of interior hydraulic oil is more than the pressure P2 of the hydraulic oil in big footpath chamber 18, therefore, when hydraulic oil enters booster body
Big footpath chamber 18 after, the pressure of the pressure more than the hydraulic oil in big footpath chamber 18 of the hydraulic oil of the conveying of path chamber 17, tool
Body magnitude relationship is relevant with the area of section ratio of second piston 15 with first piston 14.
Should explain：The pressure change relation of above-mentioned booster body be built upon two-piston only by hydraulic oil thrust simultaneously
And two-piston is synchronized with the movement on the premise of (as two-piston is rigidly connected) and draws.
Hydraulically-damped controlling organization causes that first piston 14 and second piston 15 pass through first connecting rod 30 and second connecting rod 16
Connection, when the big footpath chamber 18 in booster body is not passed through or is passed through the hydraulic oil of lower pressure, and simultaneously accumulator 36 to
The hydraulic oil of certain pressure is provided in buffer chamber 26, so that first connecting rod 30 and second connecting rod 16 keep geo-stationary, is delayed
Rush spring 27 and be in less compressive state, now, hydraulic oil in big footpath chamber 18, path chamber 17, middle part chamber 19
Pressure and buffer spring 27 are caused at first piston 14 and second piston 15 to the thrust of first connecting rod 30 and second connecting rod 16
In static and poised state, first piston 14 and second piston 15 are regarded as generally in poised state.When logical to big footpath chamber 18
When entering relative pressure hydraulic oil higher (more than the pressure that accumulator 36 is provided), the hydraulic oil pushing and pressing second in big footpath chamber 18
Piston 15 is broken so that balancing, and second piston 15 drives damper piston 35 to be moved towards first piston 14 in the presence of thrust,
The movement of simultaneous buffering piston 35 makes the hydraulic oil in buffer chamber 26 constantly fill energy to the punching of accumulator 36 by choke valve 34, delays
Rush spring 27 constantly to be compressed, in the process, first connecting rod 30 is moved towards path chamber 17 all the time with second connecting rod 16, but the
The translational speed of two connecting rods 16 is more than first connecting rod 30 so that two connecting rods form differential, namely second piston 15 and first is lived
Plug 14 forms differential, and to after being compressed completely to buffer spring 27, first is even just synchronized with the movement with second connecting rod 16, namely second
Piston 15 is synchronized with the movement with first piston 14, and now the stress balance of first piston 14 and second piston 15 is set up again.According to
The above-mentioned supercharging principle to booster body, when first piston 14 and second piston 15 are in poised state, path chamber 17
The pressure P1 of interior hydraulic oil could be more than the pressure P2 of the hydraulic oil in big footpath chamber 18, in the first of hydraulically-damped controlling organization
During beginning state, it is Pa that pressure in big footpath chamber 18 is smaller, so that the pressure in path chamber 17 is Pb, when to big footpath chamber
Pressure are passed through in 18 for Pa ' (Pa ') Pa) hydraulic oil when, because there is provided hydraulically-damped between first piston 14 and second piston 15
Controlling organization so that path chamber 17 in hydraulic fluid pressure be not increased at once it is corresponding with Pa ' during poised state
Pb ', and slowly rise since Pb, until buffer spring 27 is fully compressed, first piston 14 and second piston 15 are synchronous
Move and after reaching new balance, the pressure in path chamber 17 just reaches Pb ' from Pb.
From the foregoing, booster body can make the pressure in path chamber 17 initial from one with hydraulically-damped controlling organization
The predetermined pressure of pressure rise, so that the pressure in right chamber room 25 gradually rises, so that stamping parts is right in third trip section
Workpiece produces constantly elevated pressure, to meet the requirement of workpiece elastic-plastic deformation.
As shown in figure 1, the electrichydraulic control press with hydraulically-damped controlling organization of the invention for presser
The executive component of part is punch rod 22, and hydraulic control is used for as punch rod 22 provides power and makes stamping parts in above three
Apply corresponding pressure in trip segment to workpiece, and be additionally operable to control the backhaul of punch rod 22.
After hydraulic system starts fuel feeding, punch rod 22 starts to be close to workpiece and contacts workpiece, now, as the first control
The valve element of the hydraulic directional valve of unit 10 is in first position, and the first fluid pressure line 1 is after the reduction pressure of pressure-reducing valve 6 by surging
Reversal valve (as the first control unit 10), into the first connecting pipeline 4, by entering right chamber room 25 after the first connecting pipeline 4,
Hydraulic oil enter right chamber room 25 after because pressure itself it is relatively low so that only for punch rod 22 provide feed motion (certainly, also can be simultaneously
Pressure less power is provided) so that punch rod 22 constantly feeding and then and absorption surface, when punch rod 22 and absorption surface
Afterwards, workpiece produces reaction force to resist the elastic deformation of workpiece punch rod 22, and counter-force is passed to and performs work by punch rod 22
Plug 21, so that the pressure of the hydraulic oil in right chamber room 25 increases, the pressure of the increase is transferred to liquid by the second control piper 8
The right-hand member of the valve element of dynamic reversal valve (as the first control unit 10), so as to drive hydraulic directional valve (as the first control unit
10) valve element switches to the second place from first position.
After punch rod 22 contacts workpiece, punch rod 22 initially enters the second trip segment, now, hydraulic directional valve (as
First control unit 10) valve element switch to the second place from first position, the first fluid pressure line 1 (is made by hydraulic directional valve
It is the first control unit 10) to close, the second fluid pressure line 2 begins through hydraulic directional valve (as first control unit 10) entrance
First connecting pipeline 4, and right chamber room 25 is entered by the first connecting pipeline 4, due to being not provided with decompression on the second fluid pressure line 2
Valve 6, pressure in the second fluid pressure line 2 more than the pressure in the first fluid pressure line 1, and the hydraulic oil in right chamber room 25 pressure
Equal to the pressure in the second fluid pressure line 2, also, the pressure of second fluid pressure line 2 is arranged to make the hydraulic oil of the pressure
Pushing and pressing perform piston 21, make punch rod 22 that the elastic deformation that workpiece occurs original state is met to the pressure of workpiece, so that punching press
Bar 22 makes workpiece that the elastic deformation of original state occurs when the second trip segment feeds, so as to complete the second trip segment, workpiece is complete
Into the elastic deformation of original state.
After the feeding of punch rod 22 completes the second trip segment, third trip section is initially entered, first in punch rod 22 dashes forward
Go out portion 28 setting position just can punch rod 22 enter into third trip section when, the first protuberance 28 just with triggering machine
The push rod 29 of structure is contacted, and pushes against push rod 29, and the push rod 29 is driven as the Mechanical Driven reversal valve of the second control unit 11
Valve element switches to first position from the second place, so that the 3rd fluid pressure line 3 (the 3rd fluid pressure line 3 and the second hydraulic tube
Road 2 connects, and its pressure is identical with the second fluid pressure line 2) conducting, so that the hydraulic oil in the 3rd fluid pressure line 3 enters supercharging
The big footpath chamber 18 of mechanism, the above-mentioned buffering course of above-mentioned pressurization and hydraulically-damped controlling organization according to booster body can
Know, Mechanical Driven reversal valve (as the second control unit 11) valve element be in the second place when, i.e., punch rod 22 also in
During the second trip segment, because right chamber room 25 is connected by the second connecting pipeline 5 with path chamber 17, then the hydraulic pressure in right chamber room 25
The pressure of oil is equal to the pressure of the hydraulic oil in path chamber 17, and the pressure can make the stamped workpieces of punch rod 22 workpiece occurs
Elastic deformation, therefore, when punch rod 22 just starts to be fed to third trip section, the pressure in path chamber 17 is equal to punch rod
22 in the second trip segment hydraulic oil pressure, when the valve element of Mechanical Driven reversal valve (as the second control unit 11) is from second
After position switches to first position, (pressure of the hydraulic oil is provided the hydraulic oil of the 3rd fluid pressure line 3 higher than accumulator 36
Pressure, namely more than the pressure of the hydraulic oil in buffer chamber 26, and equal to the pressure of the hydraulic oil in path chamber 17) enter
Enter in big footpath chamber 18, the hydraulic oil pushing and pressing second piston 15 in the big footpath chamber 18 is moved towards first piston 14, damper piston
35 make the hydraulic oil in buffer chamber 26 enter accumulator 36 by choke valve 34 under the driving of second piston 15, and press simultaneously
Contracting buffer spring 27, in the process, first piston 14 and second piston 15 are moved towards path chamber 17, simply second piston
15 translational speed is more than the translational speed of first piston 14, so that form differential, now, as first piston 14 and second is lived
The continuous movement of plug 15, the pressure of the hydraulic oil in path chamber 17 gradually rises, so that punch rod 22 is in third trip section,
Pressure to workpiece constantly increases, and after buffer spring 27 is fully compressed, first piston 14 and second piston 15 start synchronization
Motion, first piston 14 and the stress balance of second piston 15, so that the pressure of the hydraulic oil in path chamber 17 reaches most
Greatly, so that punch rod 22 reaches maximum to the pressure of workpiece, punch rod 22 makes workpiece punch forming.
After workpiece punch forming, the second protuberance 31 on backhaul control-rod 23 contacts trigger switch 32, triggering just
Switch 32 controls the 3rd control unit 12 and the 4th control unit 13, makes the hydraulic oil oil return box 33 in right chamber room 25, left chamber
Hydraulic oil in 24 drives and performs piston 21, so that the backhaul of punch rod 22.So far, punch rod 22 completes a punching course,
One workpiece of processing.
Key point of the invention is：The booster body of hydraulic control coordinates with hydraulically-damped controlling organization so that punching
When third trip section is entered so that workpiece occurs elastic-plastic deformation, pressure is constantly raised depression bar 22, so as to meet workpiece in bullet
To pressure gradually increased requirement during plastic deformation, because hydraulic control of the invention causes that punch rod 22 meets three rows
The change of journey section pressure, so that the workpiece stiffness for stamping out is preferably, and the scrappage of stamped workpieces is relatively low.
Should illustrate：In hydraulically-damped controlling organization, it should make the area of section of second piston 15 and first piston 14
The ratio between the area of section maximum required when the pressure needed for elastic deformation stage and workpiece are in elastic-plastic deformation equal to workpiece
The ratio between pressure, that is to say, that pressure and workpiece that can be according to needed for workpiece in elastic deformation stage is in elastic-plastic deformation when institute
The maximum pressure for needing designs the area of section of two-piston.
One key factor of rate of pressure rise of the hydraulically-damped controlling organization control punch rod 22 to workpiece is to set
Choke valve 34, the aperture of the choke valve 34 be sized to control first piston 14 and second piston 15 be in differential state when
Between, the displacement for also controlling first piston 14 and second piston 15 to be advanced when in differential state, when being reacted to punch rod 22,
That is, choke valve 34 can control the unit displacement of punch rod 22 (feeding displacement) to the increment rate of workpiece pressure, it is also possible to control punching
Increment rate of the unit interval of depression bar 22 to workpiece pressure.So as to control workpiece the elastic-plastic deformation stage requirement pressure
Increase rate of change, so that the workpiece of punching press different materials and size, is allowed to be molded.
Hydraulic control in electrichydraulic control press of the present invention with hydraulically-damped controlling organization is relative to existing
There is the hydraulic control in technology, can more meet the actual requirement of workpiece deformation, the workpiece of punching press is better than using existing skill
The workpiece that the hydraulic control of art stamps out.
Above example is only exemplary embodiment of the invention, is not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can make respectively in essence of the invention and protection domain to the present invention
Modification or equivalent are planted, this modification or equivalent also should be regarded as being within the scope of the present invention.
Claims (5)
1. a kind of electrichydraulic control press with hydraulically-damped controlling organization, for stamped workpieces, it is characterised in that including
Executing agency and for the executing agency provides pressure and controls the hydraulic control of the executing agency；Wherein：
The executing agency include perform cylinder body, be arranged on it is described execution cylinder body in and by it is described execution cylinder body be divided into left chamber and
The execution piston of right chamber room and the punching press for stamped workpieces for being connected and being stretched out from the left chamber with the execution piston
Bar, the punch rod have be fed to the first trip segment of absorption surface, by workpiece punching press to the second of initial deformation state
Trip segment and by workpiece stamping forming third trip section；
Hydraulic control includes：
First, second and third fluid pressure line, three is connected with hydraulic system；
Pressure-reducing valve, it is arranged on the first fluid pressure line；
First control unit, its according to the trip segment of the punch rod control the first fluid pressure line and the second fluid pressure line with it is described
The break-make of right chamber room, so that when the punch rod feeds in the first trip segment, first fluid pressure line is by the first connection
Pipeline and the right chamber, when the punch rod is fed to the second trip segment from first trip segment, described second
Fluid pressure line passes through the first connecting pipeline and the right chamber；
Booster body, it includes reducing plunger shaft, the first piston being arranged in the diameter segment of the reducing plunger shaft, sets
Put the second piston in the larger-diameter section of the reducing plunger shaft, be fixed on the first connecting rod stated on first piston and
The second connecting rod for being fixed in the second piston and being oppositely arranged with the first connecting rod, wherein, the first piston and institute
State second piston and reducing plunger shaft is divided into path chamber, big footpath chamber and middle part chamber, the first connecting rod and described
Second connecting rod is located in the middle part chamber, and the 3rd fluid pressure line leads to the big footpath chamber, and the path chamber passes through
Second connecting pipeline and the right chamber；
Second control unit, it is arranged on the 3rd fluid pressure line, and second control unit is according to the punch rod
Trip segment controls the break-make of the 3rd fluid pressure line, so that when the punch rod is fed to third trip section from the second trip segment
When, the 3rd fluid pressure line conducting；
Hydraulically-damped controlling organization, buffering cylinder body that it includes the end for being fixed on the first connecting rod, is fixed on described second
The damper piston in the buffering cylinder body is simultaneously stretched into the end of connecting rod, wherein, the damper piston is surrounded with the buffering cylinder body
One buffer chamber, the cushion chamber falls are provided with for the buffer spring against the damper piston, and the buffer chamber is led to
Cross choke valve to be connected with accumulator, the middle part chamber is connected with the accumulator, the highest restriction pressure of the accumulator is small
In the pressure of second pipeline.
2. the electrichydraulic control press with hydraulically-damped controlling organization according to claim 1, it is characterised in that institute
The first control unit is stated for hydraulic directional valve, the valve element of the hydraulic directional valve has makes first fluid pressure line pass through first
Connecting pipeline and the right chamber room simultaneously make first position and make that second fluid pressure line disconnects with the right chamber room simultaneously
Second fluid pressure line connects the first connecting pipeline with the right chamber and makes first fluid pressure line and institute simultaneously
State the second place of right chamber room disconnection；The valve element of the hydraulic directional valve passes through the first control for being connected with the left chamber respectively
Pipeline and switch between the first position and the second position with the control of the second control piper of the right chamber, so as to work as
The punch rod from the first trip segment be fed to the second trip segment when, the valve element of the hydraulic directional valve is switched to by first position
The second place.
3. the electrichydraulic control press with hydraulically-damped controlling organization according to claim 1, it is characterised in that institute
The second control unit is stated for Mechanical Driven reversal valve, the valve element of the Mechanical Driven reversal valve has turns on the 3rd fluid pressure line
First position and make the second place that the 3rd fluid pressure line disconnects, it is described with the electro-hydraulic of hydraulically-damped controlling organization
Control pressure machinery also includes trigger mechanism, and the trigger mechanism includes being connected with the valve element of the Mechanical Driven reversal valve and court
Push rod that the punch rod direction is stretched out and the first protuberance being arranged in the punch rod, first protuberance is in institute
The distance for extending third trip section in the direction of feed of punch rod is stated, the 3rd is fed to from the second trip segment with when the punch rod
During trip segment, first protuberance push against the push rod so that the push rod drive the valve element of the Mechanical Driven reversal valve from
The second place switches to first position.
4. the electrichydraulic control press with hydraulically-damped controlling organization according to claim 1, it is characterised in that institute
Stating the electrichydraulic control press with hydraulically-damped controlling organization also includes what trigger switch was electrically connected with the trigger switch
3rd control unit and the 4th control unit, are additionally provided with the backhaul control-rod for stretching out the right chamber room on the piston, described
The second protuberance for triggering the trigger switch is provided with backhaul control-rod, the 3rd control unit is arranged on described
On first connecting pipeline, the 3rd control unit is with the first state for making the first connecting pipeline conducting and makes described
The second state that is that first connecting pipeline disconnects and making the right chamber room and fuel tank conducting, the 4th control unit is arranged on institute
State on the first control piper, the 4th control unit is with the first state for making the first control piper conducting and makes institute
The second state of the first control piper disconnection is stated, when the punch rod completes third trip section, the second protuberance triggering
The trigger switch makes the 4th control unit so that the 3rd control unit switches to the second state by its first state
Second state is switched to by first state；First fluid pressure line is connected by third connecting pipe with the left chamber.
5. the electrichydraulic control press with hydraulically-damped controlling organization according to claim 4, it is characterised in that institute
State the 3rd control unit and the 4th control unit is solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611035938.2A CN106734460B (en) | 2016-11-22 | 2016-11-22 | Electrichydraulic control press with hydraulically-damped control mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611035938.2A CN106734460B (en) | 2016-11-22 | 2016-11-22 | Electrichydraulic control press with hydraulically-damped control mechanism |
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| CN106734460B CN106734460B (en) | 2019-05-10 |
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| CN201611035938.2A Expired - Fee Related CN106734460B (en) | 2016-11-22 | 2016-11-22 | Electrichydraulic control press with hydraulically-damped control mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543903A (en) * | 2018-04-16 | 2018-09-18 | 西安科技大学 | Energy recoverable large operation machine tong holder buffers dynamical system and its design method |
| CN109421312A (en) * | 2017-08-24 | 2019-03-05 | 连杰油压工业股份有限公司 | Energy-conserving hydraulic former |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031859U (en) * | 1988-05-14 | 1989-02-01 | 郝雄义 | Hydraulic system eliminated hydraulic impaction |
| KR0153515B1 (en) * | 1987-12-04 | 1998-11-16 | 아마다 미쯔아끼 | Method and device for controlling the stroke of a press machine |
| US20100224057A1 (en) * | 2009-03-06 | 2010-09-09 | Mark Andrew Brown | J-ME modular, internally shifting, double acting, linear fluid actuator system |
| CN202006243U (en) * | 2011-01-05 | 2011-10-12 | 亿和精密工业（苏州）有限公司 | Stamping riveting jig device |
| CN204817637U (en) * | 2015-08-07 | 2015-12-02 | 河北晶龙阳光设备有限公司 | Be used for photovoltaic module aluminium frame duplex position stamping device |
| CN105952698A (en) * | 2016-06-17 | 2016-09-21 | 武汉软件工程职业学院 | Gas-liquid pressurized cylinder |
-
2016
- 2016-11-22 CN CN201611035938.2A patent/CN106734460B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0153515B1 (en) * | 1987-12-04 | 1998-11-16 | 아마다 미쯔아끼 | Method and device for controlling the stroke of a press machine |
| CN2031859U (en) * | 1988-05-14 | 1989-02-01 | 郝雄义 | Hydraulic system eliminated hydraulic impaction |
| US20100224057A1 (en) * | 2009-03-06 | 2010-09-09 | Mark Andrew Brown | J-ME modular, internally shifting, double acting, linear fluid actuator system |
| CN202006243U (en) * | 2011-01-05 | 2011-10-12 | 亿和精密工业（苏州）有限公司 | Stamping riveting jig device |
| CN204817637U (en) * | 2015-08-07 | 2015-12-02 | 河北晶龙阳光设备有限公司 | Be used for photovoltaic module aluminium frame duplex position stamping device |
| CN105952698A (en) * | 2016-06-17 | 2016-09-21 | 武汉软件工程职业学院 | Gas-liquid pressurized cylinder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109421312A (en) * | 2017-08-24 | 2019-03-05 | 连杰油压工业股份有限公司 | Energy-conserving hydraulic former |
| CN108543903A (en) * | 2018-04-16 | 2018-09-18 | 西安科技大学 | Energy recoverable large operation machine tong holder buffers dynamical system and its design method |
| CN108543903B (en) * | 2018-04-16 | 2019-03-29 | 西安科技大学 | Energy recoverable large operation machine tong holder buffers dynamical system and its design method |
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| CN106734460B (en) | 2019-05-10 |
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Effective date of registration: 20190416 Address after: 211300 brick wall economic Park, Gaochun District, Nanjing, Jiangsu 68 Applicant after: NANJING SHANGBO INTELLIGENT EQUIPMENT Co.,Ltd. Address before: 300000 Negative Floor B111 of Binhu Building, Huanhu Middle Road, Hexi District, Tianjin Applicant before: TIANJIN XIUJIE TECHNOLOGY CO.,LTD. |
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