CN104324985A - Full-closed loop electro-hydraulic servo plate bending machine - Google Patents
Full-closed loop electro-hydraulic servo plate bending machine Download PDFInfo
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- CN104324985A CN104324985A CN201410682454.1A CN201410682454A CN104324985A CN 104324985 A CN104324985 A CN 104324985A CN 201410682454 A CN201410682454 A CN 201410682454A CN 104324985 A CN104324985 A CN 104324985A
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- oil
- hydraulic
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- valve
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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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
- B21D5/0236—Tool clamping
- B21D5/0245—Fluid operated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Presses (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a full-closed loop electro-hydraulic servo plate bending machine which comprises a frame, master cylinders, a vertical plate, a mechanical deflection compensating workbench, a slide block and a numerical control system, wherein the master cylinders are located on the two sides above the frame; the vertical plate is located on the lower part of the frame; the mechanical deflection compensating workbench is located on a lateral side of the upper part of the vertical plate; the slide block is located above the vertical plate; the numerical control system is located on the frame; the full-closed loop electro-hydraulic servo plate bending machine is characterized by further comprising a hydraulic system and a servo motor which are connected with the numerical control system, and an oil pump which is connected with the servo motor; the hydraulic system is connected with the oil pump and the cylinder; a cylinder piston rod of the cylinder is connected with the slide block; a pressure value is closed-loop fed back to a servo driver by a machine tool; the system pressure is controlled by adjusting the rotating speed of the oil pump motor by the servo driver, so that the full-closed loop control is realized. The pressure of the hydraulic system is accurately closed-loop controlled by a servo system provided by the invention, so that the stability of the hydraulic pressure is ensured, the flow of the whole hydraulic system is subjected to accurate closed-loop control, and the overflow quantity is reduced.
Description
Technical field
The present invention relates to bender device, particularly relate to a kind of closed-loop electro-hydraulic servo plate bending machine.
Background technology
For sheet metal component manufacturing enterprise, power consumption is the major part of its production cost.In hydrolic plate bender, power consumption is mainly made up of ordinary three-phase synchronous+constant displacement pump, and the power consumption of mair motor accounts for about 70% of whole bender power consumption, so reduce the energy-conservation key that power consumption is bender.
Current electric liquid numerical control bender major part adopts the hydraulic control mode of constant displacement pump collocation PQ valve, it is a kind of control method of open loop type high pressure kicks, when stopping or Job readiness, mair motor is in running status for a long time, and therefore a large amount of hydraulic oil, by overflow, causes energy waste.
Summary of the invention
The object of the invention is to solve the problems of the prior art, provide that a kind of stable working is reliable, easy to operate, closed-loop electrohydraulic servo bending machine safely and efficiently.
Technical scheme of the present invention is: a kind of closed-loop electro-hydraulic servo plate bending machine, comprise frame, be positioned at the master cylinder of both sides above frame, be positioned at the riser of frame lower, be positioned at the mechanical bending deflection compensation work platform of side, riser top, be positioned at the slide block above riser, be positioned at the digital control system in frame; Also comprise the hydraulic system and servomotor that connect with digital control system, and the oil pump connected with described servomotor; Described hydraulic system connects with oil pump, oil cylinder; The cylinder piston rod of described oil cylinder is connected with described slide block; By lathe by force value closed loop feedback to servo-driver, servo-driver carrys out control system pressure by regulating Oil pump electrical machinery rotating speed, realizes full closed loop control;
When bender machine be in start or stop state time, servomotor does not rotate, and machine is failure to actuate;
When under slide block mechanism is fast, fast lower valve and the left position of proportional reversing valve are opened, the oil of oil cylinder cavity of resorption enters fuel tank by these two valves, simultaneously in fast lower process, described servomotor rotates and drives oil pump that the left side hydraulic fluid port of hydraulic oil passing ratio reversal valve is entered cylinder upper cavity oil, hydraulic oil in fuel tank also by prefill valve, enters cylinder upper cavity oil;
When after arrival rate transfer point, fast lower valve cuts out, and two-position four way change valve obtains electric, and prefill valve cuts out by two-position four way change valve by hydraulic oil, the hydraulic oil that now oil pump is discharged continues to enter cylinder upper cavity oil, and the hydraulic oil of oil cylinder cavity of resorption is by the left bit stream oil return box of counterbalance valve and proportional reversing valve;
When slide plate arrives after bottom dead center, two-position four way change valve dead electricity, proportional reversing valve is switched to right position, and now the right position of hydraulic oil passing ratio reversal valve and fast lower valve enter oil cylinder cavity of resorption, promote slide plate upwards action, the hydraulic oil of cylinder upper cavity oil gets back to fuel tank by prefill valve.
Preferably, described digital control system comprises touch-screen colour display device, inside PLC module, and PLC module can carry out X-Y scheme programming, supports that length of run calculates, and carries out graphically upper and lower mould, polygon mould, flexible mould.
Preferably, described digital control system calculates the bending power of workpiece automatically according to the turning program that user works out.
Preferably, also comprise grating scale mechanism, described grating scale mechanism is contained in frame both sides, for detecting slide position and feeding back to digital control system, realizes the closed-loop control in slide block movement process of grating scale mechanism.
Preferably, described servomotor is AMC AC servo motor.
Preferably, described slide block is led by the directive wheel be arranged on body and guide plate rolling friction.
Advantage of the present invention is: 1, servo-drive system has carried out accurate closed-loop control to the pressure of hydraulic system, ensure that the stability of hydraulic pressure, accurate closed-loop control has been carried out to the flow of whole hydraulic system, decrease spillway discharge, oil temperature obtains and effectively reduces, and fuel tank volume can reduce greatly, realize servomotor to the optimum Match of bender energy requirement and adjustment automatically, thus effectively extend the service life of each parts of hydraulic system.Original threephase asynchronous is replaced by servomotor, when standby, motor can be in stopping or low speed rotation state, serve energy-conservation effect, and in the course of the work, servomotor rotating speed can arbitrarily adjust, thus achieves the adjustment of slide plate speed, without any throttling, also just oil temperature is reduced, when pressurize, feed back current pressure by pressure sensor, thus adjust motor speed in real time, reduce the spillway discharge of overflow valve, the minimizing of spillway discharge, heating also just reduces, and the replacement cycle of hydraulic oil also will be elongated.
2, this product adopts advanced closed-loop electro-hydraulic servo control technology, dependable performance, speed-regulating range width; Slide block is led by the directive wheel be arranged on body and guide plate rolling friction, reduces coefficient of friction, improves positioning precision; Oil pump adopts fuel system as required, reduces overflow and high temperature exothermic, reduces energy consumption about 30% ~ 40%.Electro-hydraulic servo technology replaces conventional valve control techniques, and servomotor power output changes with load change, and the actual power needed for the different operating stage changes motor speed, realizes bending speed adjustable.
The technological means realized to make the present invention, technical characteristic, goal of the invention and technique effect are easy to understand, and below in conjunction with concrete diagram, set forth the present invention further.
Accompanying drawing explanation
Fig. 1 is the hydra-electric schematic diagram of closed-loop electrohydraulic servo bending machine;
Fig. 2 is the structural representation of closed-loop electrohydraulic servo bending machine;
Fig. 3 is closed-loop electrohydraulic servo bending machine digital control system operating board structure sketch.
Detailed description of the invention
One, the primary structure of closed-loop electro-hydraulic servo plate bending machine and operation principle
As shown in Fig. 1 ~ 2, the present invention includes: a kind of closed-loop electrohydraulic servo bending machine, comprise frame 11, be positioned at the master cylinder 13 of both sides above frame 11, be positioned at the riser 15 of frame lower, be positioned at the mechanical bending deflection compensation work platform 14 of side, riser 15 top, be positioned at the slide block 12 above riser 15, be positioned at the digital control system 17 in frame 11; Also comprise the hydraulic system 21, electrical system 22 and the servomotor 18 that connect with digital control system 17, and the oil pump 19 connected with described servomotor 18; Described hydraulic system 21 connects with oil pump 19, oil cylinder 13; The cylinder piston rod of described oil cylinder 13 is connected with described slide block 12;
When bender machine be in start or stop state time, servomotor 18 does not rotate, machine attonity;
When under slide block 12 is fast, fast lower valve 5 and the left position of proportional reversing valve 2 are opened, the oil of oil cylinder 13 cavity of resorption enters fuel tank by these two valves, simultaneously in fast lower process, described servomotor 18 rotates and drives oil pump 19 that the left side hydraulic fluid port of hydraulic oil passing ratio reversal valve 2 is entered oil cylinder 13 epicoele, hydraulic oil in fuel tank also by prefill valve 9, enters oil cylinder 13 epicoele;
When after arrival rate transfer point, fast lower valve 5 cuts out, two-position four way change valve 6 obtains electric, prefill valve 9 cuts out by two-position four way change valve 6 by hydraulic oil, the hydraulic oil that now oil pump 19 is discharged continues to enter oil cylinder 13 epicoele, and the hydraulic oil of oil cylinder 13 cavity of resorption passes through the left bit stream oil return box of counterbalance valve 4 and proportional reversing valve 2;
When slide block 12 arrives after bottom dead center, two-position four way change valve 6 dead electricity, proportional reversing valve 2 is switched to right position, the now right position of hydraulic oil passing ratio reversal valve 2, enter oil cylinder 13 cavity of resorption with fast lower valve 5, promote slide block 12 upwards action, the hydraulic oil of oil cylinder 13 epicoele gets back to fuel tank by prefill valve 9.
Two, digital control system
Machine configuration AE1000 digital control system, this system has multi-functional configuration, and the structure of guidance panel and system module separate type ensure that the highest stability.
As shown in Figure 2, be AE1000 digital control system operating board structure sketch:
The explanation of each functional part on guidance panel:
● colored touch screen 31
For showing user data and system information, and the programming of touch operation program, setting parameter etc.;
● stop key 32
The system of pressing this key enters halted state, now can carry out setting parameter and modification of program;
● run key 33
The system of pressing this key enters running status, and now system starts positioning action automatically;
● forward manipulated key 34
In a manual mode, press this key axis that cursor chooses to count up direction and run;
● oppositely manipulated key 35
In a manual mode, press this key axis that cursor chooses to subtract counting direction and run;
● action button region 36
This subregion for installing lathe indicator lamp and action button, as power supply indicator, pump start button, oil pump stop button, emergency stop push button etc.;
The main feature of AE1000 digital control system: 1) 15 cun of touch-screen colour display screens of high-resolution.2) inside PLC.3) X-Y scheme programming.4) length of run calculates.5) graphical upper and lower mould, support polygon mould, flexible mould.6) mould such as circular arc mould, return flanging die.7) graphical programming is optimized automatically, manually.8) simulation bending is supported.9) figure or the bending of numerical value formula circular arc is supported.10) keyboard and mouse can be connected.11) standard configuration supports dual-machine linkage function.
Three, main servo motor
AS series of servo driver and the domestic and international various servo-driver of this servomotor and applicant are supporting, carry out open loop or closed-loop control, can realize high speed, high control precision controls.
(1) the key technical indexes
Power bracket: 2.2-37KW
Support code name: AMZB-
Rated voltage: 380V
Number of poles: 4 poles
Degree of protection: IPV54
The class of insulation: F level
Shock levels: R or S
Environment temperature :-15-40 DEG C
Height above sea level: be less than 1000M
Rated speed: 750rpm/1000rpm/1500rpm/2000rpm/3000rpm
Encoder: built in light photoelectric coder or rotary encoder (optional)
Radiating mode: independent blower fan forced ventilation cooling
(2) motor and controller matching feature characteristic
1. starting torque is large: the dynamic response time of AMC AC servo motor acceleration and deceleration is short, generally within 200ms, improves the sensitivity of bending speed and pressure change.
2. noise is little: owing to all having carried out accurate control with during AMC AC servo machinery driving hydraulic pump to its speed, pressure, operate steadily, a low sound level pump origin system is formed with low noise hydraulic pump, bring the premium properties of low noise, not higher than 70dB as pumping source noise is average, this is that other conventional hydraulic drive system does not reach.
3. adopt high-accuracy, low noise imported bearing;
4. built-in thermel protection device makes motor winding cut off the electricity supply when reaching dangerous temperature, makes motor avoid burning;
5. good looking appearance, rational in infrastructure, small in volume.
Claims (6)
1. a closed-loop electro-hydraulic servo plate bending machine, comprise frame, be positioned at the master cylinder of both sides above frame, be positioned at the riser of frame lower, be positioned at the mechanical bending deflection compensation work platform of side, riser top, be positioned at the slide block above riser, be positioned at the digital control system in frame, it is characterized in that, also comprise the hydraulic system and servomotor that connect with digital control system, and the oil pump connected with described servomotor; Described hydraulic system connects with oil pump, oil cylinder; The cylinder piston rod of described oil cylinder is connected with described slide block; By lathe by force value closed loop feedback to servo-driver, servo-driver carrys out control system pressure by regulating Oil pump electrical machinery rotating speed, realizes full closed loop control;
When bender machine be in start or stop state time, servomotor does not rotate, and machine is failure to actuate;
When under slide block mechanism is fast, fast lower valve and the left position of proportional reversing valve are opened, the oil of oil cylinder cavity of resorption enters fuel tank by these two valves, simultaneously in fast lower process, described servomotor rotates and drives oil pump that the left side hydraulic fluid port of hydraulic oil passing ratio reversal valve is entered cylinder upper cavity oil, hydraulic oil in fuel tank also by prefill valve, enters cylinder upper cavity oil;
When after arrival rate transfer point, fast lower valve cuts out, and two-position four way change valve obtains electric, and prefill valve cuts out by two-position four way change valve by hydraulic oil, the hydraulic oil that now oil pump is discharged continues to enter cylinder upper cavity oil, and the hydraulic oil of oil cylinder cavity of resorption is by the left bit stream oil return box of counterbalance valve and proportional reversing valve;
When slide plate arrives after bottom dead center, two-position four way change valve dead electricity, proportional reversing valve is switched to right position, the now right position of hydraulic oil passing ratio reversal valve, enter oil cylinder cavity of resorption with fast lower valve, promote slide plate upwards action, the hydraulic oil of cylinder upper cavity oil gets back to fuel tank by prefill valve.
2. closed-loop electro-hydraulic servo plate bending machine according to claim 1, it is characterized in that, described digital control system comprises touch-screen colour display device, inside PLC module, PLC module can carry out X-Y scheme programming, support length of run calculates, and carries out graphically upper and lower mould, polygon mould, flexible mould.
3. closed-loop electro-hydraulic servo plate bending machine according to claim 1 and 2, is characterized in that, described digital control system calculates the bending power of workpiece automatically according to the turning program that user works out.
4. closed-loop electro-hydraulic servo plate bending machine according to claim 1, it is characterized in that, also comprise grating scale mechanism, described grating scale mechanism is contained in frame both sides, for detecting slide position and feeding back to digital control system, realize the closed-loop control in slide block movement process of grating scale mechanism.
5. closed-loop electro-hydraulic servo plate bending machine according to claim 1, is characterized in that, described servomotor is AMC AC servo motor.
6. closed-loop electro-hydraulic servo plate bending machine according to claim 1, is characterized in that, described slide block is led by the directive wheel be arranged on body and guide plate rolling friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410682454.1A CN104324985B (en) | 2014-11-24 | 2014-11-24 | Closed-loop electro-hydraulic servo plate bending machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410682454.1A CN104324985B (en) | 2014-11-24 | 2014-11-24 | Closed-loop electro-hydraulic servo plate bending machine |
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| CN104324985A true CN104324985A (en) | 2015-02-04 |
| CN104324985B CN104324985B (en) | 2016-08-24 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942087A (en) * | 2015-06-29 | 2015-09-30 | 绍兴市安雅信自动化技术有限公司 | Electro-hydraulic synchronous bending machine and control method thereof |
| CN104998933A (en) * | 2015-07-14 | 2015-10-28 | 绍兴市安雅信自动化技术有限公司 | Control method of dual-machine linkage torsion axis bending machine |
| CN105033001A (en) * | 2015-07-14 | 2015-11-11 | 绍兴市安雅信自动化技术有限公司 | Double-machine linkage torsion shaft bending machine |
| CN105855330A (en) * | 2016-04-07 | 2016-08-17 | 扬帆集团股份有限公司 | Bending device for steel plate of ship |
| CN106552840A (en) * | 2015-09-29 | 2017-04-05 | 上海埃锡尔数控机床有限公司 | A kind of electro-hydraulic mixing pump control assembly plate bending machine |
| CN107442611A (en) * | 2016-05-31 | 2017-12-08 | 小松产机株式会社 | Plate bending machine and bending method |
| CN109261821A (en) * | 2018-09-03 | 2019-01-25 | 西安飞机工业（集团）有限责任公司 | A kind of processing method for aircraft catheter end head cold-extrusion shaping |
| CN109500169A (en) * | 2017-09-15 | 2019-03-22 | 南京美克斯精密机械有限公司 | A kind of numerical control bender |
| CN109826846A (en) * | 2019-02-25 | 2019-05-31 | 淮安信息职业技术学院 | A kind of electro-hydraulic servo speed-regulating system for numerical control bender |
| CN112916670A (en) * | 2021-01-20 | 2021-06-08 | 无锡市华德尔自动化控制技术有限公司 | Servo bender numerical control system of pump control |
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| CN103334971A (en) * | 2013-07-22 | 2013-10-02 | 邹城市博威液压机械制造有限公司 | Hydraulic control system for electric-hydraulic proportional numerical control bending machine |
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| CN101463849A (en) * | 2009-01-12 | 2009-06-24 | 天水锻压机床有限公司 | Hydraulic electrohydraulic ratio control system and method for prebending machine |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942087B (en) * | 2015-06-29 | 2017-05-17 | 绍兴市安雅信自动化技术有限公司 | Electro-hydraulic synchronous bending machine and control method thereof |
| CN104942087A (en) * | 2015-06-29 | 2015-09-30 | 绍兴市安雅信自动化技术有限公司 | Electro-hydraulic synchronous bending machine and control method thereof |
| CN104998933A (en) * | 2015-07-14 | 2015-10-28 | 绍兴市安雅信自动化技术有限公司 | Control method of dual-machine linkage torsion axis bending machine |
| CN105033001A (en) * | 2015-07-14 | 2015-11-11 | 绍兴市安雅信自动化技术有限公司 | Double-machine linkage torsion shaft bending machine |
| CN106552840A (en) * | 2015-09-29 | 2017-04-05 | 上海埃锡尔数控机床有限公司 | A kind of electro-hydraulic mixing pump control assembly plate bending machine |
| CN105855330B (en) * | 2016-04-07 | 2017-10-24 | 扬帆集团股份有限公司 | A kind of shipbuilding steel plate bending device |
| CN105855330A (en) * | 2016-04-07 | 2016-08-17 | 扬帆集团股份有限公司 | Bending device for steel plate of ship |
| CN107442611A (en) * | 2016-05-31 | 2017-12-08 | 小松产机株式会社 | Plate bending machine and bending method |
| CN107442611B (en) * | 2016-05-31 | 2021-06-01 | 小松产机株式会社 | Plate bending machine |
| CN109500169A (en) * | 2017-09-15 | 2019-03-22 | 南京美克斯精密机械有限公司 | A kind of numerical control bender |
| CN109261821A (en) * | 2018-09-03 | 2019-01-25 | 西安飞机工业（集团）有限责任公司 | A kind of processing method for aircraft catheter end head cold-extrusion shaping |
| CN109826846A (en) * | 2019-02-25 | 2019-05-31 | 淮安信息职业技术学院 | A kind of electro-hydraulic servo speed-regulating system for numerical control bender |
| CN112916670A (en) * | 2021-01-20 | 2021-06-08 | 无锡市华德尔自动化控制技术有限公司 | Servo bender numerical control system of pump control |
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| CN104324985B (en) | 2016-08-24 |
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Denomination of invention: Full closed-loop electro-hydraulic servo plate bending machine Effective date of registration: 20230925 Granted publication date: 20160824 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Jiading sub branch Pledgor: SHANGHAI ACL CNC MACHINE TOOL Co.,Ltd. Registration number: Y2023310000601 |