CN110773828B - Control system for blade electrolytic machining machine tool and machining control method thereof - Google Patents
Control system for blade electrolytic machining machine tool and machining control method thereof Download PDFInfo
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- 238000003754 machining Methods 0.000 title claims abstract description 189
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000012545 processing Methods 0.000 claims abstract description 102
- 230000008569 process Effects 0.000 claims abstract description 25
- 230000006870 function Effects 0.000 claims abstract description 24
- 230000033001 locomotion Effects 0.000 claims description 45
- 238000004891 communication Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 21
- 238000011084 recovery Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 238000011165 process development Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004886 head movement Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H2500/00—Holding and positioning of tool electrodes
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- Chemical Kinetics & Catalysis (AREA)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Numerical Control (AREA)
Abstract
The invention discloses a control system for a blade electrolytic machining machine tool and a machining control method thereof. The control system adopts a distributed control structure, the machine tool operation and control units are connected with other control units through a network, the information transmission rate between the control units is high, and the control instantaneity is good. The blade processing control divides the electrolytic processing control process into a plurality of basic processing control steps based on the blade processing technology, and has the functions of automatic tool setting, sectional processing and various processing operation modes.
Description
Technical Field
The invention discloses a control system and a processing control method for a blade electrolytic machining machine tool, and relates to the technical field of electrolytic machining.
Background
The blade is one of important parts of an aircraft, and is used in parts such as an engine air inlet fan, a high-low pressure compressor, a power turbine and the like. There are various machining methods for blade machining, and common machining methods include numerical control milling, electrolytic machining, electric spark, precision casting, and the like. Because the blade is complex in shape and is manufactured by adopting special materials, the blade processing is difficult to finish by one technological method.
The electrolytic machining has the characteristics of no electrode loss, no macroscopic cutting force, no limitation of hardness of machining materials and the like, so that the method is very suitable for machining difficult-to-machine materials such as nickel-based superalloy, titanium alloy and the like. The method has great advantages in processing nickel-base superalloy and titanium alloy structural members in terms of processing cost, processing efficiency and surface quality, so that the method becomes one of the main processing methods of the difficult-to-process materials.
The electrolytic machining of the blade is a relatively complex machining process, and at present, the electrolytic machining of the single blade generally adopts a one-step forming machining process mode, namely, the electrolytic machining is carried out from two side surfaces of a blade blank at the same time, the electrolytic machining is continuously carried out to a preset position, and the shape of a blade basin and the shape of a blade back are machined at the same time. The blade electrolytic machining machine tool is the most important basic condition for electrolytic machining, and generally comprises a machine tool body, a motion system, an electrolyte system, a machining power supply system and a control system, wherein the control system is used for organically combining the machine tool motion, the electrolyte system and the machining power supply system into a whole, can uniformly schedule and command, can provide accurate motion according to the machining requirement and can ensure power supply and liquid supply in machining. Most of the existing electrolytic machining machines are operated manually, and machining conditions are judged by a machining person during machining, so that corresponding operations are executed. The electrolytic machining of the blade has higher requirements on a control system of a machining machine tool, and the control system can normally make decisions and process accidents in the machining process, wherein the requirements are good in coordination among all subsystems in the machining system.
Because each component unit of the blade processing system is distributed in different processing areas, the structure of the machine tool is relatively distributed, processing operation instructions are correctly transmitted to each subsystem, and processing related information of the subsystems needs to be fed back to the control unit. To realize unified scheduling, the requirements on information transmission and processing instantaneity between systems are high, and how to integrate control units manufactured by different manufacturers together to realize functions required by electrolytic machining is a key problem to be solved by an electrolytic machining machine tool control system. Aiming at the blade electrolytic machining requirement, the invention discloses a distributed control system which can be suitable for a blade electrolytic machining machine tool and can meet the requirements of blade machining diversity and blade machining automation.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the defects of the prior art, the control system and the processing control method for the blade electrolytic machining machine tool are provided, the control system adopts a distributed control scheme, can effectively control all units of electrolytic machining, adopts network connection, has high information transmission rate, is anti-interference and good in real time, develops corresponding control software to meet the requirements of blade electrolytic machining, and can realize the requirements of automatic tool setting, sectional machining, fault processing, parameter change and the like in blade machining.
The invention adopts the following technical scheme for solving the technical problems:
A control system for a blade electrolytic machining machine tool, the control system comprising a machine tool operation and control unit, a motion control unit, a power supply control unit, an auxiliary control unit and a liquid supply control unit, and further comprising blade electrolytic machining control software provided in the control system, wherein:
The control system structurally adopts a distributed control mode, the operation and control unit is a machine tool control central control unit, and the motion control unit, the power supply control unit, the auxiliary control unit and the liquid supply controller are field control units;
The machine tool operation and control unit, the motion control unit, the power supply control unit, the auxiliary control unit and the liquid supply control unit are communicated by adopting a network communication mode, and the control units are connected through a router;
The machine tool operation and control unit comprises a controller, an operation and display module and an interface; the machine tool operation and control unit is provided with blade electrolytic machining control software which controls the electrolytic machining process and the operation of the field control unit, and displays and stores information related to the electrolytic machining process;
The motion control unit comprises a motion controller, a servo driver, a servo motor and a detection grating and is used for controlling the left and right working heads of the machine tool to move, wherein the motion controller is connected with the machine tool operation and control unit through a network interface of the motion controller, and the motion controller is connected with the servo driver through a control adapter card.
As a further preferable scheme of the invention, the auxiliary control unit and the liquid supply control unit are both constructed by adopting a PLC, wherein the auxiliary control comprises a CPU module and a switching value and analog quantity input/output module, and the modules are connected by adopting a flat cable to assist the central control unit to control the functions of a machine tool part, so that the operation burden of a central control unit controller is reduced, and the operation efficiency and the instantaneity are improved;
the liquid supply control unit comprises a power supply module, a CPU module, a switching value input/output module, an analog value input/output module and a touch screen, wherein the CPU module is connected with the machine tool operation and control unit through a network communication switching module.
The invention also discloses a processing control method corresponding to the control system for the blade electrolytic machining machine tool, the processing control method comprises automatic tool setting, sectional machining, machining parameter change and machining fault recovery control in the machining process, wherein the blade electrolytic machining process is decomposed into a plurality of basic machining control steps according to the machining process in the control system, required control tasks are determined in each basic machining control step, and corresponding machining modes are combined according to machining requirements, and the machining modes comprise double-head machining, single-head machining or process development;
The blade electrolytic machining is carried out in a plurality of sections according to actual needs, corresponding machining voltage, power supply frequency, duty ratio and feeding speed are set in each section, and a control system automatically adjusts machining parameters according to the set sectional machining parameter values.
As a further preferable scheme of the invention, the automatic tool setting control method adopts a special tool setting module to realize automatic tool setting during processing, and the processing tool setting is controlled by a tool setting control program in a control system, and the tool setting process comprises power supply of a tool setting power supply, connection of a tool setting loop, starting of the tool setting program, detection of tool setting contact, starting of a tool release program, closing of the tool setting loop and power failure of the tool setting power supply.
As a further preferable mode of the invention, the control method for processing fault recovery includes that when faults occur in processing, the control system can process the processing faults, and the processing process includes fault information storage, fault processing, processing position recovery and processing process recovery.
The invention also discloses special control software corresponding to the control system for the blade electrolytic machining machine tool, wherein the control software adopts a multi-document structure and consists of a father window and a plurality of child windows, each child window is provided with a machine tool control operation interface, and the child window working interface is switched by adopting menu operation at the bottom of the father window;
the working interface in the control software is sequentially divided into a working parameter display area, a machining process dynamic display area, a machining operation area and a machining state prompt area from top to bottom;
A machining operation key is arranged in a machining operation area on a working interface of the control software and used for machining and machine tool operation related to machining, the function definition of the operation key is changed according to different working interfaces, and the functions defined by the operation software comprise tool setting modules, machining power supplies, liquid supply systems, motion systems, workpiece clamping, cabin doors, lubrication or machining fault operation;
and setting working parameters by the control software, wherein the set machining parameters comprise machining tool setting, sectional options, movement position parameters, movement speed parameters, machining fault processing parameters, left-head sectional machining parameters, right-head sectional machining parameters and other parameters, and when the parameters are changed, the control system stores the changed information into an ACESS database.
As a further preferable aspect of the present invention, in the operation interface of the control software, the set sub-window includes: double-head processing, single-head processing, process development, process analysis, liquid supply control, motion control, power supply control and parameter setting.
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
The control system of the blade electrolytic machining machine tool adopts a distributed control mode, and an operation and control unit controls the electrolytic machining process and the operation of the machine tool, the auxiliary functions of the machine tool, a liquid supply system and a machining power supply according to the content of the blade electrolytic machining process. The distributed control structure is adopted to better benefit the electrolytic complex control task of the blade, improve the working efficiency of the system and improve the real-time performance of the system.
The control system of the blade electrolytic machining machine tool adopts a modularized structure on the control of the machining process, is divided into a plurality of machining control steps according to the content of the blade electrolytic machining sequence and the machining steps, prescribes corresponding control content and working time sequence in each machining step, has a manual and automatic triggering mode, can combine the machining steps and the triggering modes into working modes such as double-head machining, single-head machining, open-process development and the like, and can be suitable for different machining occasions.
The control system can realize automatic processing of the blade, can realize automatic tool setting, sectional processing and processing parameter adjustment functions in the processing process, and control software can judge the processing state, the end of the processing step and the starting condition of the next step in real time in the processing, and the processing can complete one processing cycle by only pressing an operation key.
The control software for blade electrolytic machining comprises control software of a machine tool operation unit and control programs of field control units, data communication among different control units is realized by using a driving interface function, and the control software has rich machine tool control functions, machining operation interfaces and communication interfaces and can meet the electrolytic machining requirements of different blades.
Drawings
FIG. 1 is a block diagram of a blade electrolytic machining control system;
FIG. 2 is a blade electrolysis plus control system hardware connection diagram;
Wherein: 1. the system comprises an S7-200 PLC network switching module, an S7-200 PLC CPU module, a3, an S7-200 PLC analog input module 1, a 4, an S7-200 PLC analog input/output module 2, a machine tool operation and control unit, a6, DN-8468PB switching card, a 7, a grating interface, an 8, a grating and detection head, a 9, a left head servo driver, a 10, a right head servo driver, an 11, a left head servo motor, a 12, a right head servo motor, a 13, an ET-8194H motion controller, a 14, a processing power supply controller, a 15, a processing power supply communication switching module, a 16, a network router, a 17, an S7-300 PLC power supply module, an 18, an S7-300 PLC CPU module, a 19, an S7-300 PLC switching value input/output module and an S7-300 PLC analog input/output module;
FIG. 3 is a sectional view of a blade electrolytic machining control step;
FIG. 4 is a dual head automated process mode control flow diagram;
FIG. 5 is a process fault handling flow diagram;
FIG. 6 is a block diagram of blade electrolytic machining control software;
wherein: 21. the left machining parameters display, 22, the motion real-time parameters display, 23, the electrolyte working parameters display, 24, the left machining power supply parameters display, 25, the machining operation area, 26, the working interface switching menu area, 27, the right machining parameters display, 28, the left machining power supply parameters display, 29, the machining fault processing parameters display, 30, the machining process dynamic display area, 31, the machining state prompt area, 32, the machining option setting area, 33, the machining motion position parameter setting area, 34, the fault processing parameters setting area, 35, the left machining power supply parameters setting area, 36, the machining operation speed parameter setting area, 37, the other parameters setting area, 38 and the left machining power supply parameters setting area.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings and specific embodiments:
The invention discloses a control system for a blade electrolytic machining machine tool, which comprises a machine tool operation and control unit, and the control system consists of a machine tool operation and control unit, a field control unit such as a motion control unit, a power supply control unit, an auxiliary control unit, a liquid supply control unit and special control software.
The machine tool operation and control unit comprises a machine tool operation and display unit, a control unit and a communication module. The control unit consists of a computer, a TPC6000 type industrial control computer of Shanghai Fu research company is selected, a 15 inch touch screen is integrated at the front end of the computer and is used as an operation and display unit of a control system, and 2 networks and 5 COM ports are integrated at the bottom of the industrial control computer. Machine tool operation and control software specially developed for blade electrolytic machining is installed in the computer. The operation and control unit is connected with the control units of other systems by adopting a network router.
The motion control unit comprises a motion controller, a servo driver, a servo motor and a detection grating. The motion controller is selected from ET-M8194H type motion controller of Taiwan body, which integrates network communication interface, and the motion control related information is transmitted between the controller and the machine tool control operation and control unit through network. The motion required by the electrolytic machining is realized by the motion function in the dynamic connection library of the operation and control unit calling driving software, and is interpreted and executed by the motion controller. The motion controller signal is connected to the corresponding interface on the DN-8468 adapter card through a 68-pin interface, and then is connected with the corresponding interface of the servo driver through a 50-pin interface, and control information is transmitted between the motion controller signal and the servo driver, so that the servo motor is driven. The detection grating is connected to a grating signal input interface corresponding to the drive through a grating interface. Wherein, servo driver, servo motor, detection grating model can be selected according to specific circumstances and use. The operation and control unit reads the motion information of the left working head and the right working head of the machine tool through a driving function, wherein the motion information comprises the motion position information and the motion speed information.
The auxiliary control unit is composed of S7-200 PLC and comprises a network communication conversion module, a CPU 226, 2 analog input EM231 modules and 1 analog output EM232 module. Because the CPU module has no network connection function, the CPU module is switched by adopting a network communication conversion module, the CPU module and the CPU module are connected through PPI wires, and the network communication between the two computers is realized by adopting a PRODAVE drive interface of Siemens company. The auxiliary control unit mainly completes auxiliary operation functions of the machine tool, and comprises operations of a tool setting module of the machine tool, a machining clamp, lubrication of the machine tool, a cabin door of the machine tool and the like. In order to realize the control coordination between the machine tool operation and control unit and the PLC, the method is to establish the mapping relation between the input and output between the memories of the two controllers, change the operation signal sent by the machine tool operation and control unit into the input signal of the PLC, control the corresponding function of the machine tool by the PLC program, and change the output signal of the PLC into the input signal of the machine tool operation and control unit. The read-write function provided by PRODAVE between the machine tool operation and control unit and the PLC can efficiently control the operation of the PLC, and the control task is reasonably distributed between the machine tool operation and control unit and the PLC, so that the operation efficiency of the CPU of the computer and the instantaneity of the control system are improved.
The liquid supply control unit is constructed by an S7-300PLC and comprises a power supply module, a CPU317 module, 2 digital quantity input SM321 modules, 2 digital quantity output SM322 modules, 2 analog quantity input SM331 and 1 analog quantity output SM332 modules. The liquid supply control unit PLC CPU module is integrated with a network communication interface and is connected with the machine tool operation and control unit through a network. The liquid supply control unit independently completes the control functions of electrolyte circulation filtration, parameter detection and control, electrolyte conveying and the like. The operation and control unit sends an electrolyte system operation or closing instruction to the liquid supply control unit through a network, and reads the working parameters and operation state information of the electrolyte system.
The processing power supply control unit comprises a controller, a switching value and an RS485 serial interface, wherein the power supply controller is developed by adopting an ARM single chip microcomputer, serial communication of the controller is converted into a network communication mode by adopting a UT-6601H converter between the power supply controller and a machine tool operation and control unit, and a network interface of the UT-6601H converter is connected to a network router of a control system. The parameter settings of the process power supply are sent to the power supply controller through the network, and the process power supply controller returns the voltage, current, duty cycle and frequency parameters of the power supply through the network. The control computer of the machine tool operation and control unit realizes the control of the machining power supply by reading the input and output image area in the memory of the auxiliary control unit S7-200 PLC.
The invention discloses a processing control method corresponding to a control system for a blade electrolytic processing machine tool, which comprises the following steps: the control system adopts a distributed control structure, has a plurality of working mode selection and processing selection items, and can realize automatic tool setting, sectional processing, processing parameter change and processing fault treatment and recovery in the processing process.
In the control system, a machine tool operation and control unit and a field control unit (a motion control unit, a power supply control unit, a liquid supply control unit, an auxiliary control unit) are connected by a network, and control related information is transmitted between the units through the network and an input/output interface. The machine tool operation and control unit is a machine tool control core, the blade machining operation is input through operation keys in control software, and the control unit controls the machining process by means of the machine tool control software and simultaneously controls each field unit to run. The units of the control system are connected by a network so that the system units have higher communication rate.
In the blade electrolytic machining control method, the whole machining process is divided into a plurality of basic units according to a single blade electrolytic machining process, and the basic machining units are used as content organization control structures. The blade electrolytic machining process is divided into a double-end positioning [ left-end positioning ] [ right-end positioning ], a left-end cutter setting, a left-end cutter relieving, a right-end cutter setting, a right-end cutter relieving, a left-end machining, a right-end machining, an unsegmented double-end machining, a1 st-end machining, a 2 nd-end machining, a 3 rd-end machining, a 4 th-end machining, a 5 th-end machining, a double-end retracting [ left-end retracting ] [ right-end retracting ] control STEP, and a code number (SYS_STEP=10, 20, 30, 40, 50, 60, 70, 80, 81-85, 100) is allocated to each machining STEP. The corresponding working contents are specified in each processing step. The processing step is executed in two starting modes, software on a working interface of machine tool control software is used for triggering in manual processing, and whether the next processing step starts to execute the next step is judged according to the processing ending state of the previous processing step in an automatic processing mode. In the machining step, tool setting and machining in segments from 1 to N are optional steps, and machining tool setting, machining segments and segment number corresponding options are selected in a machining parameter setting interface.
In the blade electrolytic machining control method, the segmented machining and parameter changing functions are implemented in a specific method, the machining process can be divided into 5 machining sections at most in a control system, each machining section is divided into two stages of single-head machining (left-head machining or right-head machining) and double-head machining, and the power supply and the machining speed parameters of each machining section can be set according to requirements. Firstly, selecting a segmented processing item in a parameter setting interface, then selecting a corresponding segmented number in the segmented parameters, setting a processing position, a processing speed and a power parameter, and controlling electrolytic processing by a control system according to the segmented number and the processing parameter during processing.
In the blade electrolytic machining control method, a fault processing function is added into a control system in order to process machining faults. As shown in fig. 4 and 5, when a machining fault occurs during machining, the control system informs an operator of the machining fault, the operator opens a fault processing function in a machining operation area in control software, firstly, machining fault information is stored, the stored information has a value of a machining STEP code sys_step, the left head movement position of a machine tool and the right head movement position of the machine tool, the information is stored in a database established by using an ACESS in the control system, after the data is stored, the operator can process the machining fault, after the fault processing, the operator performs 'machining position recovery', and control software recalculates the positions to which the left and right working heads should move according to the machining STEP code when the fault occurs, and then a double-head positioning numerical control program is called to enable the left and right working heads to move to designated positions. And finally, executing the operation of recovering the processing, and recovering the processing process by the control system according to the processing step code.
The invention also discloses a special control software for the control system of the blade electrolytic machining machine tool, as shown in fig. 6, the special control software adopts a multi-document structure, has a plurality of working interfaces such as double-head machining, single-head machining, process development and the like, can set and store working parameters, establishes connection between the control software and a field control unit through a communication interface function, sends control information and receives state information, and controls the operation of the electrolytic machining process.
The special control software of the distributed control system of the blade electrolytic machine tool adopts VB software development and adopts an MDI multi-document structure, the control software comprises a father window and a plurality of child windows, the father window is used as a container of the child windows, a menu for switching the child windows is arranged at the bottom, and a state bar for prompting the processing state is arranged above the switching menu. The child window is used for setting a working interface of the control system, and is embedded in the parent window to run when working. The sub-window of the control software design comprises an automatic processing window, a manual processing window, a process development window and a process analysis window, wherein the automatic processing window and the manual processing window are used for blade processing and process trial production, the process analysis window is used for processing analysis, the liquid supply control window and the numerical control system control window are used for controlling an electrolytic processing field unit, the power supply control window is used for setting working parameters, and the parameter setting window is used for entering a system.
The information storage of the special control software of the distributed control system of the blade electrolytic machine tool adopts ACCES database storage, and the control software is connected with the data through an ADO control interface. The information stored in the control software includes process parameter information, control system information, fault information, and the like. The data storage and reading of the control system adopts a DataGrid control as a transfer.
The communication interfaces between the special control software of the blade electrolytic machine tool distributed control system and the Siemens field control units S7-200 and S7-300PLC adopt PRODAVE6.2 tool software provided by Siemens company, and through the communication interfaces, the control software establishes communication with the PLC in a network communication mode, and can freely read and write the input and output, analog quantity mapping area, variable storage area, bit storage area and the like of the PLC in various modes.
The special control software of the distributed control system of the blade electrolytic machine tool is communicated with the motion controller by adopting library function drive provided by manufacturers, network parameters are firstly set, connection is established between the control software and the motion controller, and the motion of the machine tool is controlled by using a drive function after connection.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The present invention is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other embodiments, such as those described above, of making various modifications and equivalents will fall within the spirit and scope of the present invention.
Claims (4)
1. A processing control method corresponding to a control system for a blade electrolytic processing machine tool is characterized in that: the control system for the blade electrolytic machining machine tool comprises a machine tool operation and control unit, a motion control unit, a power supply control unit, an auxiliary control unit and a liquid supply control unit, and further comprises blade electrolytic machining control software arranged in the control system, wherein:
The control system structurally adopts a distributed control mode, the operation and control unit is a machine tool control central control unit, and the motion control unit, the power supply control unit, the auxiliary control unit and the liquid supply controller are field control units;
The machine tool operation and control unit, the motion control unit, the power supply control unit, the auxiliary control unit and the liquid supply control unit are communicated by adopting a network communication mode, and the control units are connected through a router;
The machine tool operation and control unit comprises a controller, an operation and display module and an interface; the machine tool operation and control unit is provided with blade electrolytic machining control software which controls the electrolytic machining process and the operation of the field control unit, and displays and stores information related to the electrolytic machining process;
The motion control unit comprises a motion controller, a servo driver, a servo motor and a detection grating and is used for controlling the left and right working heads of the machine tool to move, wherein the motion controller is connected with the machine tool operation and control unit through a network interface of the motion controller, and the motion controller is connected with the servo driver through a control adapter card;
The processing control method comprises automatic tool setting, segmented processing, processing parameter variation and processing fault recovery control in the processing process, wherein,
Decomposing the electrolytic machining process of the blade into a plurality of basic machining control steps in a control system according to a machining process, determining a required control task in each basic machining control step, and combining the control tasks into corresponding machining modes according to machining requirements, wherein the machining modes comprise double-head machining, single-head machining or process development;
The blade electrolytic machining is carried out in a plurality of sections according to actual needs, corresponding machining voltage, power supply frequency, duty ratio and feeding speed are set in each section, and a control system automatically adjusts machining parameters according to the set sectional machining parameter values.
2. A processing control method according to claim 1, wherein the processing control method corresponds to a control system for a blade electrolytic processing machine, and is characterized in that: the auxiliary control unit and the liquid supply control unit are all constructed by adopting a PLC, wherein the auxiliary control comprises a CPU module and a switching value and analog quantity input/output module, and the modules are connected by adopting a flat cable, so that the central control unit is assisted in controlling the functions of a machine tool part, the operation burden of a central control unit controller is reduced, and the operation efficiency and instantaneity are improved;
the liquid supply control unit comprises a power supply module, a CPU module, a switching value input/output module, an analog value input/output module and a touch screen, wherein the CPU module is connected with the machine tool operation and control unit through a network communication switching module.
3. A processing control method corresponding to a control system for a blade electrolytic processing machine according to claim 2, wherein: according to the automatic tool setting control method, a special tool setting module is adopted to realize automatic tool setting during machining, the machining tool setting is controlled by a tool setting control program in a control system, and the tool setting process comprises power supply of a tool setting power supply, connection of a tool setting loop, starting of the tool setting program, tool setting contact detection, starting of a tool letting program, closing of the tool setting loop and power failure of the tool setting power supply.
4. A processing control method according to claim 3, wherein the processing control method corresponds to a control system for a blade electrolytic processing machine, and is characterized in that: the control method for processing fault recovery comprises the step that when faults occur in processing, a control system can process the processing faults, and the processing process comprises fault information storage, fault processing, processing position recovery and processing process recovery.
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| CN119304287B (en) * | 2024-12-16 | 2025-05-06 | 深圳市星宏精密电解科技有限公司 | Intelligent control system of electrolytic machine tool and electrolytic machine tool |
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