CN102236337A - Control and design of programmable logic controller (PLC) for electrical remolding of machine tool - Google Patents
Control and design of programmable logic controller (PLC) for electrical remolding of machine tool Download PDFInfo
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- CN102236337A CN102236337A CN2011100965311A CN201110096531A CN102236337A CN 102236337 A CN102236337 A CN 102236337A CN 2011100965311 A CN2011100965311 A CN 2011100965311A CN 201110096531 A CN201110096531 A CN 201110096531A CN 102236337 A CN102236337 A CN 102236337A
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Abstract
The invention relates to the control and design of a programmable logic controller (PLC) for the electrical remolding of a machine tool, and belongs to the technical field of machining equipment. The PLC adopts a typical computer structure, mainly comprises a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM) and an input and output interface circuit, and internally adopts a bus structure for the transmission of data and instructions. A PLC control system is divided into three parts which are an input part, a control part and an output part respectively, and the working process of the PLC control system is divided into three stages which are input processing, program control and output processing respectively. Connection between the programmable logic controller and the computerized numerical control (CNC) machine tool essentially adopts an external circuit connection method, and comprises signal connection between the input and output ends of the PLC and a machine tool panel, the strong electrical signal connection between the output end of the PLC and the machine tool and the connection between the input end of the PLC and an I/O interface of a numerical control device of the CNC machine tool. When used for the conventional machine tool, the PLC improves machining accuracy and efficiency, reduces the labor load of workers and saves the cost.
Description
Technical field
The present invention relates to control and the design of Programmable Logic Controller PLC in the electric reconstruction lathe, belong to the machining equipment technical field.
Background technology
Along with the numerical control technology is goed deep into mechanical industry gradually, the application of Programmable Logic Controller PLC more and more widely.CA6140 type engine lathe is most widely used a kind of in the lathe, and main building block has: main spindle box, feed box, slip crate, knife rest, tailstock, feed rod, leading screw and lathe bed.The CA6140 lathe can carry out various turneries, and can process metric system, English system, modulus and pitch thread, and this lathe good rigidly, power are big, easy to operate.But along with the fast development of lathe, original lathe has fallen behind at aspects such as working (machining) efficiency, machining precision, working strength of workers, continues that therefore original lathe is carried out upgrading and could satisfy present processing needs.
Summary of the invention
In view of the defective that prior art exists, the purpose of this invention is to provide a kind of control and design of Programmable Logic Controller PLC in the electric reconstruction lathe, PLC is used for lathe, but labor savings improves machining precision and speed.
For achieving the above object, the present invention solves by the following technical programs: the control of Programmable Logic Controller PLC and design in the electric reconstruction lathe, PLC adopts typical computer organization, mainly comprise CPU, RAM, ROM and input, output interface circuit, its inner bus structure that adopt are carried out the transmission of data and instruction; The PLC control system is divided into three parts: importation, control section and output, the course of work divide three sections to carry out: input processing, programmed control, output are handled; The connecting mode of Programmable Logic Controller and CNC lathe is the external circuit coupling method in essence, system I/O mouth sends steering order, make Programmable Logic Controller input end noncontacting switch break-make, finish the logic control of Programmable Logic Controller by the CNC numerical control to the lathe forceful electric power, comprise that the PLC input/output terminal connects with lathe panel signal, the PLC output terminal connects with lathe forceful electric power signal, and the PLC input end connects with CNC lathe numerical control device I/O interface.
In the described PLC control system, importation such as pushbutton switch, limit switch directly are connected with the PLC input terminal, and in order to produce input control signal, these signals are from the manual command on the operator's console; Control section is carried out working control according to controlled device repeatedly and is required the user program worked out, and produces various output control signals; Output such as contactor, solenoid valve, they directly are connected with the PLC lead-out terminal, in order to the action of control controlled device.
In the described PLC course of work: input is handled, PLC carries out user program in the multiple scanning mode, before executive routine, at first read in the input mapping register by the on off operating mode (input signal) of geocoding order with all input terminals, begin to carry out user program then, in the process of implementation, even input signal changes, the content of input mapping register is also constant, just reads input state processing stage of the input of next scan period again; Programmed control, PLC sequential scanning user program, needed information of program of every execution is all read from input mapping register and other internal registers and is participated in calculating, and then execution result is write relevant thing and goes out in the mapping register; Output is handled: after whole instructions are finished, the state in the output mapping register all is sent in the output latch register, constitutes the actual output of PLC and sent by lead-out terminal.
Described PLC input/output terminal connects with lathe panel signal, and panel adopts optical fiber to be connected with system, and in conjunction with the own characteristic requirement of Machine-Tool Control operation, defining operation key on the lathe panel satisfies the requirement of Machine-Tool Control fully; On the CNC numerical tool operation panel button, rotary switch, waver and pilot lamp are arranged, button, rotary switch and waver directly link to each other with the input end binding post of Programmable Logic Controller, the pilot lamp wiring is directly by linking to each other with the PLC output end binding post, and pilot lamp bright secretly depended on the on off state of relevant PLC input end and be solidificated in trapezoidal circle program in the PCROM card.
Described PLC output terminal connects with lathe forceful electric power signal, and the main effect of PLC in the CNC lathe is the control strong power part, as: master control power supply, servo power supply, knife rest motor positive and inverse, main shaft fan, lubrication motor gesture; Because it is very big to flow through the electric current of forceful electric power circuit, all be connected to the protection relay at the PLC output terminal, each exchange edge circle both sides resistance-capacitance circuit in parallel to absorb because the surge current that produces during the coil break-make, can non-property for what improve motor operation, move line in contact and turn over and be added with the interlock protection contact in the circuit; In like manner, the working procedure steering logic of each motor all is solidificated in the PCROM card, is subjected to the control of machine operation panel-switch and cnc system software.
Described PLC input end connects with CNC numerical control of machine tools dress basin I/O interface, the break-make of Programmable Logic Controller output terminal is by its input end on off operating mode and trapezoid figure program decision, the CNC lathe numerical control device is directly to control the state of the break-make of PLC input end with decision PLC output terminal by soft switch with connecting of Programmable Logic Controller, information flow direction analysis from numerical control device I/O mouth, can be divided into two kinds of situations: the one, numerical control device is from I/O mouth output order, and control PLC finishes corresponding action; Another kind is the on off state that detects the PLC input port, and the I/O mouth of numerical control device is an input signal, and numerical control device is made control corresponding according to the character of input signal.
Beneficial effect of the present invention: PLC is used for original lathe, has not only improved machining precision and efficient, and alleviated workman's work burden, new machine need not be bought and just processing and fabricating can be proceeded, lathe is turned waste into wealth, saved cost, shortened the working time.
Embodiment
The control of Programmable Logic Controller PLC and design in the electric reconstruction lathe, PLC adopts typical computer organization, mainly comprises CPU, RAM, ROM and input, output interface circuit, its inner bus structure that adopt are carried out the transmission of data and instruction; The PLC control system is divided into three parts: importation, control section and output, the course of work divide three sections to carry out: input processing, programmed control, output are handled; The connecting mode of Programmable Logic Controller and CNC lathe is the external circuit coupling method in essence, system I/O mouth sends steering order, make Programmable Logic Controller input end noncontacting switch break-make, finish the logic control of Programmable Logic Controller by the CNC numerical control to the lathe forceful electric power, comprise that the PLC input/output terminal connects with lathe panel signal, the PLC output terminal connects with lathe forceful electric power signal, and the PLC input end connects with CNC lathe numerical control device I/O interface.
In the described PLC control system, importation such as pushbutton switch, limit switch directly are connected with the PLC input terminal, and in order to produce input control signal, these signals are from the manual command on the operator's console; Control section is carried out working control according to controlled device repeatedly and is required the user program worked out, and produces various output control signals; Output such as contactor, solenoid valve, they directly are connected with the PLC lead-out terminal, in order to the action of control controlled device.
In the described PLC course of work: input is handled, PLC carries out user program in the multiple scanning mode, before executive routine, at first read in the input mapping register by the on off operating mode (input signal) of geocoding order with all input terminals, begin to carry out user program then, in the process of implementation, even input signal changes, the content of input mapping register is also constant, just reads input state processing stage of the input of next scan period again; Programmed control, PLC sequential scanning user program, needed information of program of every execution is all read from input mapping register and other internal registers and is participated in calculating, and then execution result is write relevant thing and goes out in the mapping register; Output is handled: after whole instructions are finished, the state in the output mapping register all is sent in the output latch register, constitutes the actual output of PLC and sent by lead-out terminal.
Described PLC input/output terminal connects with lathe panel signal, and panel adopts optical fiber to be connected with system, and in conjunction with the own characteristic requirement of Machine-Tool Control operation, defining operation key on the lathe panel satisfies the requirement of Machine-Tool Control fully; On the CNC numerical tool operation panel button, rotary switch, waver and pilot lamp are arranged, button, rotary switch and waver directly link to each other with the input end binding post of Programmable Logic Controller, the pilot lamp wiring is directly by linking to each other with the PLC output end binding post, and pilot lamp bright secretly depended on the on off state of relevant PLC input end and be solidificated in trapezoidal circle program in the PCROM card.
Described PLC output terminal connects with lathe forceful electric power signal, and the main effect of PLC in the CNC lathe is the control strong power part, as: master control power supply, servo power supply, knife rest motor positive and inverse, main shaft fan, lubrication motor gesture; Because it is very big to flow through the electric current of forceful electric power circuit, all be connected to the protection relay at the PLC output terminal, each exchange edge circle both sides resistance-capacitance circuit in parallel to absorb because the surge current that produces during the coil break-make, can non-property for what improve motor operation, move line in contact and turn over and be added with the interlock protection contact in the circuit; In like manner, the working procedure steering logic of each motor all is solidificated in the PCROM card, is subjected to the control of machine operation panel-switch and cnc system software.
Described PLC input end connects with CNC numerical control of machine tools dress basin I/O interface, the break-make of Programmable Logic Controller output terminal is by its input end on off operating mode and trapezoid figure program decision, the CNC lathe numerical control device is directly to control the state of the break-make of PLC input end with decision PLC output terminal by soft switch with connecting of Programmable Logic Controller, information flow direction analysis from numerical control device I/O mouth, can be divided into two kinds of situations: the one, numerical control device is from I/O mouth output order, and control PLC finishes corresponding action; Another kind is the on off state that detects the PLC input port, and the I/O mouth of numerical control device is an input signal, and numerical control device is made control corresponding according to the character of input signal.
Claims (6)
1. control and the design of Programmable Logic Controller PLC in the electric reconstruction lathe, PLC adopts typical computer organization, mainly comprises CPU, RAM, ROM and input, output interface circuit, its inner bus structure that adopt are carried out the transmission of data and instruction; The PLC control system is divided into three parts: importation, control section and output, the course of work divide three sections to carry out: input processing, programmed control, output are handled; The connecting mode of Programmable Logic Controller and CNC lathe is the external circuit coupling method in essence, system I/O mouth sends steering order, make Programmable Logic Controller input end noncontacting switch break-make, finish the logic control of Programmable Logic Controller by the CNC numerical control to the lathe forceful electric power, comprise that the PLC input/output terminal connects with lathe panel signal, the PLC output terminal connects with lathe forceful electric power signal, and the PLC input end connects with CNC lathe numerical control device I/O interface.
2. control and the design of Programmable Logic Controller PLC in the electric reconstruction lathe according to claim 1, it is characterized in that in the described PLC control system, importation such as pushbutton switch, limit switch, directly be connected with the PLC input terminal, in order to produce input control signal, these signals are from the manual command on the operator's console; Control section is carried out working control according to controlled device repeatedly and is required the user program worked out, and produces various output control signals; Output such as contactor, solenoid valve, they directly are connected with the PLC lead-out terminal, in order to the action of control controlled device.
3. control and the design of Programmable Logic Controller PLC in the electric reconstruction lathe according to claim 1, it is characterized in that in the described PLC course of work: input is handled, PLC carries out user program in the multiple scanning mode, before executive routine, at first read in the input mapping register by the on off operating mode (input signal) of geocoding order with all input terminals, begin to carry out user program then, in the process of implementation, even input signal changes, the content of input mapping register is also constant, just reads input state processing stage of the input of next scan period again; Programmed control, PLC sequential scanning user program, needed information of program of every execution is all read from input mapping register and other internal registers and is participated in calculating, and then execution result is write relevant thing and goes out in the mapping register; Output is handled: after whole instructions are finished, the state in the output mapping register all is sent in the output latch register, constitutes the actual output of PLC and sent by lead-out terminal.
4. control and the design of Programmable Logic Controller PLC in the electric reconstruction lathe according to claim 1, it is characterized in that described PLC input/output terminal connects with lathe panel signal, panel adopts optical fiber to be connected with system, own characteristic requirement in conjunction with the Machine-Tool Control operation, defining operation key on the lathe panel satisfies the requirement of Machine-Tool Control fully; On the CNC numerical tool operation panel button, rotary switch, waver and pilot lamp are arranged, button, rotary switch and waver directly link to each other with the input end binding post of Programmable Logic Controller, the pilot lamp wiring is directly by linking to each other with the PLC output end binding post, and pilot lamp bright secretly depended on the on off state of relevant PLC input end and be solidificated in trapezoidal circle program in the PCROM card.
5. control and the design of Programmable Logic Controller PLC in the electric reconstruction lathe according to claim 1, it is characterized in that described PLC output terminal connects with lathe forceful electric power signal, the main effect of PLC in the CNC lathe is the control strong power part, as: master control power supply, servo power supply, knife rest motor positive and inverse, main shaft fan, lubrication motor gesture; Because it is very big to flow through the electric current of forceful electric power circuit, all be connected to the protection relay at the PLC output terminal, each exchange edge circle both sides resistance-capacitance circuit in parallel to absorb because the surge current that produces during the coil break-make, can non-property for what improve motor operation, move line in contact and turn over and be added with the interlock protection contact in the circuit; In like manner, the working procedure steering logic of each motor all is solidificated in the PCROM card, is subjected to the control of machine operation panel-switch and cnc system software.
6. control and the design of Programmable Logic Controller PLC in the electric reconstruction lathe according to claim 1, it is characterized in that connecting of described PLC input end and CNC numerical control of machine tools dress basin I/O interface, the break-make of Programmable Logic Controller output terminal is by its input end on off operating mode and trapezoid figure program decision, the CNC lathe numerical control device is directly to control the state of the break-make of PLC input end with decision PLC output terminal by soft switch with connecting of Programmable Logic Controller, information flow direction analysis from numerical control device I/O mouth, can be divided into two kinds of situations: the one, numerical control device is from I/O mouth output order, and control PLC finishes corresponding action; Another kind is the on off state that detects the PLC input port, and the I/O mouth of numerical control device is an input signal, and numerical control device is made control corresponding according to the character of input signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100965311A CN102236337A (en) | 2011-04-18 | 2011-04-18 | Control and design of programmable logic controller (PLC) for electrical remolding of machine tool |
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| CN2011100965311A CN102236337A (en) | 2011-04-18 | 2011-04-18 | Control and design of programmable logic controller (PLC) for electrical remolding of machine tool |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436214A (en) * | 2011-11-10 | 2012-05-02 | 大连永明数控机床有限公司 | Embedded internal grinder digital control system |
| CN104932407A (en) * | 2015-05-27 | 2015-09-23 | 苏州荣威工贸有限公司 | Modular robot driving control system and method based on PLC |
| CN105182913A (en) * | 2015-09-23 | 2015-12-23 | 浙江金玛机床有限公司 | Numerical control machine tool control system and control method |
| CN106597994A (en) * | 2017-01-09 | 2017-04-26 | 王全亮 | Electrical transformation technology for machine tool |
| CN107065776A (en) * | 2017-03-23 | 2017-08-18 | 马鞍山工蜂智能科技有限公司 | A kind of industrial lathe automation control system |
| CN109098898A (en) * | 2018-08-09 | 2018-12-28 | 江西五十铃汽车有限公司 | A kind of compression diesel vehicle filter manual oil pump automatic control system and its control method |
| CN109634203A (en) * | 2018-12-19 | 2019-04-16 | 上海维宏电子科技股份有限公司 | The control system and corresponding method that the end IO is controlled based on CNC controller |
| CN114488954A (en) * | 2021-12-20 | 2022-05-13 | 安徽环球传动科技有限公司 | Flexible machine tool control system |
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2011
- 2011-04-18 CN CN2011100965311A patent/CN102236337A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436214A (en) * | 2011-11-10 | 2012-05-02 | 大连永明数控机床有限公司 | Embedded internal grinder digital control system |
| CN104932407A (en) * | 2015-05-27 | 2015-09-23 | 苏州荣威工贸有限公司 | Modular robot driving control system and method based on PLC |
| CN105182913A (en) * | 2015-09-23 | 2015-12-23 | 浙江金玛机床有限公司 | Numerical control machine tool control system and control method |
| CN106597994A (en) * | 2017-01-09 | 2017-04-26 | 王全亮 | Electrical transformation technology for machine tool |
| CN107065776A (en) * | 2017-03-23 | 2017-08-18 | 马鞍山工蜂智能科技有限公司 | A kind of industrial lathe automation control system |
| CN109098898A (en) * | 2018-08-09 | 2018-12-28 | 江西五十铃汽车有限公司 | A kind of compression diesel vehicle filter manual oil pump automatic control system and its control method |
| CN109634203A (en) * | 2018-12-19 | 2019-04-16 | 上海维宏电子科技股份有限公司 | The control system and corresponding method that the end IO is controlled based on CNC controller |
| CN109634203B (en) * | 2018-12-19 | 2021-12-17 | 上海维宏电子科技股份有限公司 | Control system for controlling IO terminal based on numerical control controller and corresponding method |
| CN114488954A (en) * | 2021-12-20 | 2022-05-13 | 安徽环球传动科技有限公司 | Flexible machine tool control system |
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Application publication date: 20111109 |