CN106681279A - Numerical control system based on multisystem control and realization method thereof - Google Patents
Numerical control system based on multisystem control and realization method thereof Download PDFInfo
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- CN106681279A CN106681279A CN201510747202.7A CN201510747202A CN106681279A CN 106681279 A CN106681279 A CN 106681279A CN 201510747202 A CN201510747202 A CN 201510747202A CN 106681279 A CN106681279 A CN 106681279A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/414—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
- G05B19/4145—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller characterised by using same processor to execute programmable controller and numerical controller function [CNC] and PC controlled NC [PCNC]
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34298—Custom window between pic, plc and nc, programmable adapter
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- Manufacturing & Machinery (AREA)
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
Abstract
The invention relates to a numerical control system based on multisystem control, which comprises a numerical control part and a PLC control part connected with the numerical control part, wherein the numerical control part controls motion trajectories of a servo driver and a motor; and the PLC control part auxiliarily controls logic actions of a production line. The realization method comprises the following steps: setting of multisystem parameters of the numerical control system, initialization and writing of a machining procedure are completed through a touch screen; interaction data between a CPU of a PLC and an NC control unit are updated through a sharing element G; and an H network bus realizes interaction of system signals between multiple independent PLC control systems and the NC control system. Finally, drilling and rigid tapping of three station machines are completed under control of one set of numerical control system. Application of the numerical control multisystem control on the automatic production line is realized, the maintenance is convenient, the production efficiency is improved, and the hardware cost is saved due to the multisystem design.
Description
Technical field
The invention belongs to digital control system and automatically control application, it is related to a kind of number based on multi-systematic control
Control system and its implementation, and in particular to C70 series numerical controls are upgraded to by the C5 series NC systems of Mitsubishi
The PLC control system of system and Q series, has merged digital control system, and automatic control system, Profibus is total
The field bus techniques such as line, Mitsubishi's H nets, CC-LINK nets, for automobile engine cylinder-body line cylinder body is carried out
Drilling and tapping.
Background technology
Automobile engine cylinder-body needs the processing mounting holes on cylinder body to be used for connecting as the core component of engine
Other assembling parts such as oil circuit, the gas circuit of periphery are connect, cylinder body machine ledger line is primarily used to be bored on cylinder body
Hole and rigid tapping.
Existing automobile engine cylinder-body line uses Mitsubishi's C5 series NC systems of the nineties, each
Station machine tool is furnished with independent CNC digital control systems and PLC control system, because duration of service is longer, is
System is aging, and the information such as program parameter can not be backed up, and Frequent Troubles have had a strong impact on production efficiency.With number
The update of control product, the digital control system of C5 series can't buy the modules such as motor, driver.Once
Damage occurs in device hardware will can be changed without spare part, and this is for the cylinder body machine ledger line that day processes thousand
It is unacceptable, huge threat is even more to enterprise.The newest C70 series NC systems of Mitsubishi are due to possessing
Multisystem function, is particularly suitable for being configured in and both require independent operating, requires again on the production line of cooperation.
Its equipment cost can be substantially reduced.A kind of motor cylinder block production line based on multi-systematic control of present invention research
Mitsubishi C5 digital control system upgrade methods, solve the problems, such as that cylinder body line runs into.
The content of the invention
Object of the present invention is to provide a kind of digital control system and its implementation based on multi-systematic control.
Rely on Mitsubishi's general program language platform to carry out the programming of multi-systematic control method, completed by touch-screen
The setting of CNC digital control system multisystem parameters, by H network-bus multiple independent PLC control systems are realized
System signal interacts between NC control units；The high speed of control section and executable portion is realized by optical fiber
Communication.It is final to realize being completed simultaneously under the control of a set of CNC digital control systems centered on NC control units
The drilling of three station machine tools and rigid tapping.
The technical solution adopted for the present invention to solve the technical problems is：Based on the digital control system of multi-systematic control,
Including numerical control part and connected PLC control sections；The numerical control part includes NC control units
And connected executable portion, the executable portion include by optical fiber connect multiple servo-drivers,
Each servo-driver is connected with the motor for controlling machine tool chief axis or axis servomotor；PLC control sections include many
The individual PLC control system by H net connection communications.
The PLC control system includes the CPU and connected CC-LINK main websites network mould of PLC
Block, PROFIBUS modules, H nets local station module, I/O module；The CPU and NC control units,
Or be connected with the CPU of other PLC control systems by H nets local station module.
The NC control units are connected with touch-screen, the setting and plus engineering for CNC digital control system parameters
Sequence is write.
The PLC control system configures 3 system channels, for controlling 2 main shafts and 7 axis servomotors.
Based on the digital control system implementation method of multi-systematic control, comprise the following steps：
Setting, initialization and the procedure of digital control system parameter are completed by touch-screen, by shared unit
Part G updates the interaction data between CPU the and NC control units of PLC control system, total by H networks
Line realizes interacting for system signal between multiple independent PLC control systems and NC control units；
Each PLC control system automatic, wire body roller-way conveying workpieces are to certain PLC control system correspondence
Processing stations；The PLC control system detects workpiece in place by detection switch, controls clamp cylinder electromagnetism
Valve obtains electric, drives clamp workpiece；Now the PLC control system sends needs and calls to NC control units
Procedure number；
NC control units start procedure according to the procedure number that each PLC control system is sent, respectively
The main shaft of each station machine tool and the servo-driver of axis servomotor are controlled, is driven by servo-driver controlled motor
Mechanical actuating mechanism completes main shaft, X, Z axis servomotor to cylinder body machined surface coordinate position and the positioning of working depth；
After the completion of positioning, NC control units send and machine code to the PLC control system；The PLC
Control system control work piece holder unclamps, and sends workpiece all-clear, and wire body roller bed conveying line passes workpiece
It is sent to next processing stations.
The parameter includes：Device parameter, axle specifications parameter, servo parameter, main shaft specifications parameter, performance
Parameter.
The H network-bus realize system signal between multiple independent PLC control systems and NC control units
Interaction
The invention has the advantages that and advantage：
1. the C70 digital control systems that the present invention is adopted, optical-fibre communications, system response time is fast, shortens wire body life
Beat is produced, production efficiency is improve.
2. the present invention can upload download by the transmission medium systematic parameter such as network interface, USB and procedure,
Facilitate the regular maintenance of user.
3. the multisystem method for designing that the present invention is adopted, greatlys save hardware cost.
4. present invention achieves the control of the realtime monitoring and digital control system to multisystem and peripheral signal
Control integration.
Description of the drawings
Fig. 1 is the Computerized Numerical Control system hardware configuration structure figure of the present invention；
Fig. 2 a are the cylinder body line number control system control process figure one of the present invention；
Fig. 2 b are the cylinder body line number control system control process figure two of the present invention；
Fig. 2 c are the cylinder body line number control system control process figure three of the present invention；
The multi-systematic control method block diagram of Fig. 3 present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The hardware of three station machine tools of cylinder body line of the present invention is that a set of C70 digital control systems match somebody with somebody three sets of independent Q systems
Row PLC control system, using the method for multi-systematic control, designs 3 system channels, controls 2 main shafts
With 7 axis servomotors：1st system channel is used for 1 main shaft, 3 axis servomotors of 6 station machine tools of control；2nd
System channel is used for 1 main shaft, 3 axis servomotors of 4 station machine tools of control；3rd system channel is used for control 7
1 axis servomotor of station machine tool；Digital control system adopts optical-fibre communications, and by touch-screen CNC numerical controls system is completed
The setting of system parameter, initialization and procedure are write, and by shared element G PLC control system is updated
Interaction data between CPU the and NC control units of system, by H network-bus three independent PLC are realized
System signal between control system and NC control units is interacted.Rely on Mitsubishi's general program language platform profit
The PLC program design of multi-systematic control method is carried out with trapezoid figure language.The present invention is with NC control units
Control centre, PLC control system aids in the logical action of master cylinder wire body.NC control units control servo is driven
Dynamic device and motor drive executing agency to complete movement locus, final to realize under the control of a set of CNC digital control systems
Complete the drilling in three station machine tools and rigid tapping.
The multi-systematic control refers to CNC digital control systems and arranges multiple control systems, and each system can be single
Only control a machine tool, it include reference axis X, Y of lathe, Z ..., main shaft, tool magazine position control,
PLC functions etc..The control number of axle in system number and each system, can accomplish independence by parameter setting between system
Control, does not interfere with each other.
The lathe executing agency is made up of X-axis, Z axis and main shaft, and Z axis motor passes through shaft coupling connecting filament
Thick stick, drives lathe to vertically move, and X-axis motor connects slide unit by gear, drives lathe transverse shifting, main
Broach shell is installed in spindle motor shaft end, for the Cutting tool installation manner of processing.
The H network bus, using coaxial cable the H nets local station module of three PLC control systems is connected,
By H complete axle initialization between multiple independent PLC control systems and NC control units, model selection,
M codes are completed, NC reset, etc. the status signal of system interaction.
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, digital control system includes numerical control part and PLC control system, numerical control part is controlled including NC
Unit processed, touch-screen and its executable portion.Touch-screen is communicated with NC control units by network interface, executable portion
Including servo-drive, servomotor.The invention configures 3 systems, 2 servo principal axis, 7 axis servomotors.
NC control units are communicated with executable portion by high speed fibre, connect 6 station machine tool, one main shaft and three are watched
Axle is taken, connects one axis servomotor of 4 station machine tool, one main shaft and three axis servomotors and 7 station machine tools.From
HF series of servo motors, MDS-D series of servo drivers, SJ-D series spindle motors.
The C70 series NC systems of Mitsubishi are different from the digital control system of special purpose machine tool, and the system-specific is in joint
On the production line of operation, installation is also different from special-purpose numerical control system.Using the number of model Q173NCCPU
Control system is directly installed on the frame frid of Mitsubishi's Q series of PLC, by high-speed bus and PLC controls system
The CPU communications of system.
Touch-screen adopts GT1675-STBA, touch-screen to be connected by network interface with system, is completed by touch-screen
The setting and initialization of all CNC digital control systems parameters and writing for procedure.C70 digital control systems can
With using touch-screen without using the special display screen of digital control system.For especially for multi-systematic control,
Equivalent to saving 5 sets of hardware OP-panels.Powerful picture making and the monitoring of touch-screen can be utilized simultaneously
Function, realizes the operational control of hommization.
Each station machine tool configures independent PLC control system, and each PLC control system adopts Q systems of Mitsubishi
Q04UDHCPU is arranged as control centre, QJ61BT11N as CC-LINK main websites mixed-media network modules mixed-media, it is real
The communication of existing man-machine interface, active station and CPU；QJ71BR11 completes many as H nets local station module
Axle initialization between individual independent PLC control system and NC control units, model selection, M codes complete,
NC reset, etc. the status signal of system interaction.QJ71PB92V as PROFIBUS master station modules,
Realize the remotely control of lathe periphery input and output signal, I/O module connection local input output signal.Adopt
Connect the H nets local station module of three PLC control systems with coaxial cable, realize three PLC control systems
Between, with the networking between NC control units.
The digital control system control flow of cylinder body line multi-systematic control is as follows：
As shown in Fig. 2 a, Fig. 2 b, Fig. 2 c, three station machine tool digital control system control flows are as follows：
Using trapezoidal pattern programming, NC control unit parameter settings are completed, and system initialization and PLC control system are initial
Change is completed, and the PLC program of PLC control system starts automatic.Wire body roller-way conveying workpieces are to processing work
Position, PLC control system detects workpiece in place by detection switch, and control clamp cylinder magnetic valve obtains electric, drives
Clamp workpiece, PLC control system sends the procedure number for needing to call to NC control units；NC is controlled
Unit processed starts procedure according to the procedure number that each PLC control system is sent, and each station is controlled respectively
The main shaft of lathe and the servo-driver of axis servomotor, by servo-driver controlled motor driving mechanical machine is performed
Structure completes main shaft, X, Z axis servomotor to cylinder body machined surface coordinate position and the positioning of working depth；Positioning is completed
Afterwards, NC control units send and machine code to the PLC control system；The PLC control system control
Work piece holder unclamps, and sends workpiece all-clear, and workpiece is sent to next adding by wire body roller bed conveying line
Work station.
As shown in figure 3, multi-systematic control method includes multisystem NC control unit parameter designing and multisystem
PLC control system programming.Multisystem NC control unit parameter designing is included：Basic parameter is arranged,
Axle specifications parameter and servo parameter are arranged, main shaft specifications and characteristics parameter setting；Multisystem PLC control system
Programming is designed comprising system control process, and axis servomotor, main shaft initialization, mode of operation, handwheel is selected
Programming, system signal programming between many PLC.
The multi-systematic control unit NC parameter designings：The present invention 3 systems of configuration, device parameter mainly sets
Determine the composition of control shaft, multisystem needs to arrange following basic parameter,
#1001 parameter settings select system and PLC axles with/without.#1001=3
The control number of axle, the PLC number of axle in #1002 parameter settings each systems.
Axle name in #1013 parameter settings each systems.
The pitch of the ball-screw in #1016 parameter settings each systems.
The direction of rotation of the motor in #1017 parameter settings each systems.
Driver element particular number in 5 systems of #1021 parameter settings.
#1039 parameter setting main shaft numbers.#1039=2
Axle specifications parameter and servo parameter arrange the machining accuracy and performance for having directly influenced Digit Control Machine Tool.If
Put encoder resolution, gear ratio, rapid traverse speed, Acceleration and deceleration time, reset mode, back to zero speed, return
Current limit, Acceleration and deceleration time, speed ring gain, position loop gain, main shaft same period control seat increase when zero
The multinomial servo parameter such as benefit, feed forward of acceleration, servo parameter needs repeatedly adjustment debugging, debugs principle:First
Adjustment current ring parameter and then ring parameter of regulating the speed, last adjustment position ring parameter.Only electric current loop and speed
The servo parameter of ring arranges suitable, can just obtain higher position ring performance, the positional precision of Digit Control Machine Tool and
Precision is followed to be only possible to be improved.
Main shaft specifications and characteristics parameter principal set up：Main shaft type, main shaft maximal rate, restriction speed, master
Axle tapping rotating speed, main shaft orientation rotating speed, the same period tapping switching speed of mainshaft, positioning, position ring origin are returned
Time constant, tapping time constant of the mode of returning etc..Main shaft number is provided with device parameter, and can not
Specify which system the main shaft belongs to.Speed of mainshaft instruction in procedure is instructed using S, in many main shafts,
Instructed using S zero=* * * * * *.S instructions can come from the procedure of any system.Each main shaft instructs basis
Zero content makes a distinction.Such as S1=3500, the instruction of the 1st main shaft 3500 (r/min)；S2=1500；2nd master
Axle 1500 (r/min) is instructed.
The multisystem PLC control system programming, the control unit of CNC digital control systems and PLC are controlled
The CPU of system processed is arranged on on one piece of high speed substrate, and the two updates interaction data by shared element G.
The CPU reservation of PLC X300 soft element address after Y300 be used for and number between NC control units
According to interaction.Under Mitsubishi's general program language platform, using trapezoid figure language multi-systematic control method PLC is carried out
The PLC program design of control system.
The control flow of the digital control system of design multi-systematic control；The initialization program of design axis servomotor and main shaft,
For example axis servomotor enable, self interlocking, manually interlocking, it is outside slow down, single-unit interlocking, main shaft are enabled, main
Axle tapping, main shaft rotating, main shaft gearshift, M codes complete, NC reset, feeding keep, procedure
The signal Programmings such as startup；Design automatic initial set mode, JOG patterns, handwheel pattern, automatic mold
Formula, single-unit pattern, reference point returns six kinds of mode of operations, designs multisystem handwheel program, and hand wheel shaft is selected,
Multiplying power program；Design H net programs, realize be between multiple independent PLC control systems and NC control units
The interaction of system signal, the such as status signal of each PLC control system, the axis servomotor of NC control units is initial
Change the signal conditions such as signal, handwheel signal, mode signal and each PLC is delivered to by the home address that H is netted
CPU soft element in, participate in digital control system Row control.
Claims (7)
1. the digital control system of multi-systematic control is based on, it is characterised in that：Including numerical control part and connected
PLC control sections；The numerical control part includes NC control units and connected executable portion, institute
Multiple servo-drivers that executable portion includes connecting by optical fiber are stated, each servo-driver is connected with for controlling
The motor of machine tool chief axis processed or axis servomotor；PLC control sections include multiple PLC by H net connection communications
Control system.
2. the digital control system based on multi-systematic control according to claim 1, it is characterised in that the PLC controls
System processed includes the CPU and connected CC-LINK main websites mixed-media network modules mixed-media, PROFIBUS of PLC
Module, H nets local station module, I/O module；The CPU nets this with NC control units or by H
Ground station module is connected with the CPU of other PLC control systems.
3. the digital control system based on multi-systematic control according to claim 1, it is characterised in that the NC controls
Unit processed is connected with touch-screen, and setting and procedure for CNC digital control system parameters is write.
4. the digital control system based on multi-systematic control according to claim 1, it is characterised in that the PLC controls
3 system channels of system configuration processed, for controlling 2 main shafts and 7 axis servomotors.
5. the digital control system implementation method of multi-systematic control is based on, it is characterised in that comprised the following steps：
Setting, initialization and the procedure of digital control system parameter are completed by touch-screen, by shared unit
Part G updates the interaction data between CPU the and NC control units of PLC control system, total by H networks
Line realizes interacting for system signal between multiple independent PLC control systems and NC control units；
Each PLC control system automatic, wire body roller-way conveying workpieces are to certain PLC control system correspondence
Processing stations；The PLC control system detects workpiece in place by detection switch, controls clamp cylinder electromagnetism
Valve obtains electric, drives clamp workpiece；Now the PLC control system sends needs and calls to NC control units
Procedure number；
NC control units start procedure according to the procedure number that each PLC control system is sent, respectively
The main shaft of each station machine tool and the servo-driver of axis servomotor are controlled, is driven by servo-driver controlled motor
Mechanical actuating mechanism completes main shaft, X, Z axis servomotor to cylinder body machined surface coordinate position and the positioning of working depth；
After the completion of positioning, NC control units send and machine code to the PLC control system；The PLC
Control system control work piece holder unclamps, and sends workpiece all-clear, and wire body roller bed conveying line passes workpiece
It is sent to next processing stations.
6. the digital control system implementation method based on multi-systematic control according to claim 5, it is characterised in that institute
Stating parameter includes：Device parameter, axle specifications parameter, servo parameter, main shaft specifications parameter, performance parameter.
7. the digital control system implementation method based on multi-systematic control according to claim 5, it is characterised in that institute
State H network-bus and realize interacting for system signal between multiple independent PLC control systems and NC control units.
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| CN107807615A (en) * | 2017-10-26 | 2018-03-16 | 东莞市乔锋机械有限公司 | A kind of machining center complex control system |
| CN109459980A (en) * | 2018-10-25 | 2019-03-12 | 山东中衡光电科技有限公司 | A kind of co-melting robot control system of optical fabrication and method |
| CN109822692A (en) * | 2019-02-04 | 2019-05-31 | 南兴装备股份有限公司 | A kind of control system of numerical control machining center |
| CN109870973A (en) * | 2019-02-22 | 2019-06-11 | 合肥齐泰光电科技有限公司 | A kind of Light Electrical all-in-one machine telecommunication command system |
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