CN207459709U - For the three phase electric machine control system of numerically-controlled machine tool - Google Patents
For the three phase electric machine control system of numerically-controlled machine tool Download PDFInfo
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- CN207459709U CN207459709U CN201721411258.6U CN201721411258U CN207459709U CN 207459709 U CN207459709 U CN 207459709U CN 201721411258 U CN201721411258 U CN 201721411258U CN 207459709 U CN207459709 U CN 207459709U
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Abstract
The utility model discloses a kind of three phase electric machine control system for numerically-controlled machine tool, including：Controller；Silicon controlled control circuit is electrically connected with the controller, for controlling motor operation；Current protecting circuit is electrically connected with controller and silicon controlled control circuit, for detecting the size of current inputted in motor, and sends feedback signal into controller；Communicating circuit is connected with controller signals, for sending the parameter of electric machine signal in controller；Device end is connected with communicating circuit signal, for receiving and showing parameter of electric machine signal；Size of current that parameter of electric machine signal in controller such as inputs, motor speed are sent to device end by communicating circuit and are shown, personnel's Real Time Observation motor conditions easy to operation, so as to accomplish to carry out the protection work to motor in advance.
Description
Technical field
The utility model is related to the motor-drive technique field of numerically-controlled machine tool, more specifically, it relates to which a kind of be used to count
Control the three phase electric machine control system of lathe.
Background technology
Numerically-controlled machine tool is the abbreviation of numerically-controlled machine tool, is a kind of automated machine tool equipped with program control system.The control
System processed can be handled logically with control coding or other symbolic instruction regulated procedures, and is decoded, with code
Digital representation, numerical control device is inputted by information carrier.Various control signals are sent by numerical control device through calculation process, are controlled
The action of lathe, shape and size by drawing, automatically processes part.
In numerically-controlled machine tool, motor is more important execution unit, and staff needs the moment to pay attention to motor conditions, keeps away
Exempt from motor and be stopped to have an impact whole service process.But at present, also lack the real-time monitoring to motor performance, work
Personnel are difficult the electric property for knowing motor, it is impossible to look-ahead are carried out to motor, from being unable to accomplish to carry out in advance pair
The protection work of motor.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of three-phases for numerically-controlled machine tool
Electric machine control system can monitor the performance of motor in real time, so as to carry out the protection work to motor in advance.
To achieve the above object, the utility model provides following technical solution：
A kind of three phase electric machine control system for numerically-controlled machine tool, including：
Controller；
Silicon controlled control circuit is electrically connected with the controller, for controlling motor operation；
Current protecting circuit is electrically connected with the controller and the silicon controlled control circuit, for detecting input electricity
Size of current in machine, and feedback signal is sent into controller；
Communicating circuit is connected with the controller signals, for sending the parameter of electric machine signal in the controller；
Device end is connected with the communicating circuit signal, for receiving and showing parameter of electric machine signal.
By using above-mentioned technical proposal, controller controls the break-make of silicon controlled control circuit, so as to can reach control electricity
The purpose of machine operation；After signal in current protecting circuit acquisition input motor, output feedback signal is into controller, through control
After device analysis, if electric current is bigger than normal, then silicon controlled control circuit control motor is stopped；Parameter of electric machine signal in controller
The size of current of such as input, motor speed are sent to device end by communicating circuit and are shown, personnel easy to operation are real
When observe motor conditions, so as to accomplish to carry out the protection work to motor in advance.
Further, the communicating circuit includes chip MAX485.
Further, the device end uses mobile phone, tablet computer or desktop computer with display screen.
Further, the silicon controlled control circuit includes：
Total switch circuit is connected with the controller signals；
First switch circuit, input terminal are connected to the total switch circuit, and output terminal is connected to circuit for controlling motor, use
In the break-make for controlling the first isolated drive circuit；
First isolated drive circuit is connected with the first switch circuit signal, for avoiding signal interference；
First bidirectional triode thyristor circuit is connected with the isolated drive circuit signal, and output terminal is connected to motor, for controlling
The break-make of motor processed.
Further, the total switch circuit includes：
PNP triode Q4, base stage are connected with controller, and emitter is connected to power supply；
PNP triode Q5, base stage are connected with controller, and emitter is connected to power supply；
The collector of the PNP triode Q4 and PNP triode Q5 is all connected to the first switch circuit.
Further, the first switch circuit includes：
NPN triode Q2, base stage are connected to the collector of the PNP triode Q4, and collector is connected to power supply；
NPN triode Q3, base stage are connected to the collector of the PNP triode Q5, and collector is connected to NPN triode
The emitter of Q2, emitter ground connection；
NPN triode Q1, base stage are connected to the company of the NPN triode Q2 emitters and NPN triode Q3 collectors
Contact, collector are connected to power supply, emitter ground connection.
Further, first isolated drive circuit includes silicon-controlled photoelectrical coupler U1, the silicon-controlled photoelectricity coupling
The light-emitting diodes tube anode of clutch U1 is connected to the emitter of the NPN triode Q1, minus earth；The silicon-controlled photoelectricity coupling
The silicon-controlled output terminal of clutch U1 is connected to the bidirectional triode thyristor circuit.
Further, the current protecting circuit includes：
Second switch circuit, input terminal are connected to the total switch circuit, and output terminal is connected to current detecting control electricity
Road, for controlling the break-make of current detection circuit；
Second isolated drive circuit is connected with the second switch circuit signal, for avoiding signal interference；
Second bidirectional triode thyristor circuit is believed with second isolated drive circuit and the circuit for controlling motor output terminal
Number connection, output terminal is connected to the current detection circuit, for controlling the break-make of the current detection circuit；
Current detection circuit, input terminal are connected to the current detection control circuit, and output terminal is connected to the control
Device.
Further, the current detection circuit includes：
Current transformer L1, the high current for control circuit to be exported changes into low current output, and connects with controller
It connects；
Transient Suppression Diode TVS, one end are connected to the output terminal of the current transformer L1, for absorbing moment big electricity
Stream, other end ground connection.
By using above-mentioned technical proposal, the high current that control circuit exports is changed into low current by current transformer L1,
As in feedback current input controller；Transient Suppression Diode TVS can absorb instantaneous large-current, reaches protection circuit below
Purpose.
Further, the current detection circuit further includes controlling circuit of voltage regulation, and the controlling circuit of voltage regulation includes series connection
Diode D5 and diode D6, wherein, the cathode of diode D5 is connected to power supply, and anode is connected with the cathode of diode D6,
The plus earth of diode D6.
It, can be by the voltage stabilization in input controller in setting value, raising input signal by using above-mentioned technical proposal
Stability.
Compared with prior art, the utility model has the advantages that：Parameter of electric machine signal such as the electric current inputted in controller
Size, motor speed etc. are sent to device end by communicating circuit and are shown, personnel's Real Time Observation motor feelings easy to operation
Condition, so as to accomplish to carry out the protection work to motor in advance.
Description of the drawings
Fig. 1 is the system block diagram of the utility model；
Fig. 2 is the circuit diagram of communicating circuit；
Fig. 3 is silicon controlled control circuit and the circuit diagram of current protecting circuit；
Fig. 4 is the circuit diagram of current detection circuit.
Reference numeral：1st, controller；2nd, silicon controlled control circuit；3rd, communicating circuit；4th, device end；5th, current protection electricity
Road；6th, total switch circuit；7th, first switch circuit；8th, the first isolated drive circuit；9th, the first bidirectional triode thyristor circuit；10th,
Two on-off circuits；11st, the second isolated drive circuit；12nd, the second bidirectional triode thyristor circuit；13rd, current detection circuit；14th, voltage stabilizing
Control circuit；15th, motor.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
A kind of three phase electric machine control system for numerically-controlled machine tool, with reference to Fig. 1, including controller 1, for controlling motor 15
The silicon controlled control circuit 2 of operation inputs the current protecting circuit 5 of size of current in motor 15, for transmission control for detecting
The communicating circuit 3 of 15 parameter signal of motor in device 1 processed and the device end for receiving and showing 15 parameter signal of motor
4.Silicon controlled control circuit 2 is electrically connected with controller 1；Current protecting circuit 5 and controller 1 and the electricity of silicon controlled control circuit 2
Connection, and feedback signal is sent into controller 1；Communicating circuit 3 is connected with 1 signal of controller；Device end 4 and communicating circuit
3 signals connect.Controller 1 controls the break-make of silicon controlled control circuit 2, so as to can reach the purpose that control motor 15 is run；Electricity
After signal in the stream protection acquisition input motor 15 of circuit 5, output feedback signal is into controller 1, after via controller 1 is analyzed,
If electric current is bigger than normal, then silicon controlled control circuit 2 controls motor 15 to be stopped；15 parameter signal of motor in controller 1 is such as
Size of current, 15 rotating speed of motor of input etc. are sent to device end 4 by communicating circuit 3 and are shown, personnel easy to operation
15 situation of Real Time Observation motor, so as to accomplish to carry out the protection work to motor 15 in advance.
In the present embodiment, communicating circuit 3 includes chip MAX485, and physical circuit is with reference to Fig. 2.Device end 4, which uses, to be had
Mobile phone, tablet computer or the desktop computer of display screen.Controller 1 uses microcontroller.
With reference to Fig. 3, silicon controlled control circuit 2 includes total switch circuit 6, for control 8 break-make of the first isolated drive circuit
First switch circuit 7, for the first isolated drive circuit 8 for avoiding signal interference and for controlling 15 break-make of motor
First bidirectional triode thyristor circuit 9.Total switch circuit 6 is connected with 1 signal of controller；The input terminal of first switch circuit 7 is connected to
Total switch circuit 6, output terminal are connected to 15 control circuit of motor；First isolated drive circuit 8 connects with 7 signal of first switch circuit
It connects；First bidirectional triode thyristor circuit 9 is connected with isolated drive circuit signal, and output terminal is connected to motor 15.
Wherein, total switch circuit 6 includes PNP triode Q4 and PNP triode Q5, the base stage of PNP triode Q4 and control
Device 1 connects, and emitter is connected to power supply；The base stage of PNP triode Q5 is connected with controller 1, and emitter is connected to power supply；And
The collector of PNP triode Q4 and PNP triode Q5 are all connected to first switch circuit 7.
First switch circuit 7 includes NPN triode Q2, NPN triode Q3 and NPN triode Q1, the base of NPN triode Q2
Pole is connected to the collector of PNP triode Q4, and collector is connected to power supply；The base stage of NPN triode Q3 is connected to PNP triode
The collector of Q5, collector are connected to the emitter of NPN triode Q2, emitter ground connection；NPN triode Q1, base stage connects
The tie point of NPN triode Q2 emitters and NPN triode Q3 collectors is connected to, collector is connected to power supply, emitter ground connection.
First isolated drive circuit 8 includes silicon-controlled photoelectrical coupler U1, the light-emitting diodes of silicon-controlled photoelectrical coupler U1
Tube anode is connected to the emitter of NPN triode Q1, minus earth；The silicon-controlled output terminal connection of silicon-controlled photoelectrical coupler U1
In bidirectional triode thyristor circuit.In the present embodiment, in order to avoid being impacted in energization immediate current so that circuit operation is relatively stable,
Silicon-controlled photoelectrical coupler U1 uses the silicon-controlled photoelectrical coupler of zero passage.First bidirectional triode thyristor circuit 9 includes bidirectional triode thyristor
BCR1, control pole are connected to the output terminal of silicon-controlled photoelectrical coupler, and output terminal is connected to motor 15.
Current protecting circuit 5 includes controlling the second switch circuit 10 of 13 break-make of current detection circuit, for avoiding
Second isolated drive circuit 11 of signal interference, the second bidirectional triode thyristor circuit for controlling 13 break-make of current detection circuit
12 and current detection circuit 13.The input terminal of second switch circuit 10 is connected to total switch circuit 6, and output terminal is connected to electricity
Stream detection control circuit；Second isolated drive circuit 11 is connected with 10 signal of second switch circuit；Second bidirectional triode thyristor circuit
12 are connected with the second isolated drive circuit 11 and the 15 equal signal of control circuit output terminal of motor, and output terminal is connected to current detecting electricity
Road 13；The input terminal of current detection circuit 13 is connected to current detection control circuit, and output terminal is connected to controller 1.
Wherein, second switch circuit 10 includes NPN triode Q6, NPN triode Q7 and NPN triode Q8, NPN triode
The base stage of Q6 is connected to the collector of PNP triode Q4, and collector is connected to power supply；The base stage of NPN triode Q7 is connected to PNP
The collector of triode Q5, collector are connected to the emitter of NPN triode Q6, emitter ground connection；NPN triode Q8's,
Base stage is connected to the tie point of NPN triode Q6 emitters and NPN triode Q7 collectors, and collector is connected to power supply, transmitting
Pole is grounded.
Second isolated drive circuit 11 includes silicon-controlled photoelectrical coupler U2, the light-emitting diodes of silicon-controlled photoelectrical coupler U2
Tube anode is connected to the emitter of NPN triode Q8, minus earth；The silicon-controlled output terminal connection of silicon-controlled photoelectrical coupler U2
In the second bidirectional triode thyristor circuit 12.In the present embodiment, in order to avoid being impacted in energization immediate current so that circuit is run more
Stablize, silicon-controlled photoelectrical coupler U2 uses the silicon-controlled photoelectrical coupler of zero passage.
Second bidirectional triode thyristor circuit 12 includes bidirectional triode thyristor BCR2 and resistance capaciting absorpting circuit, bidirectional triode thyristor BCR2's
Control pole is connected to the output terminal of silicon-controlled photoelectrical coupler, and bidirectional triode thyristor BCR2 also has the first pole and the second pole, wherein,
Second extremely output terminal and is connected to controller 1；Resistance capaciting absorpting circuit is parallel to the first pole and second of bidirectional triode thyristor BCR2
Pole, resistance R14 and capacitance C4 including series connection, the other end of resistance R14 are connected to the first pole of bidirectional triode thyristor BCR2, capacitance
The other end of C4 is connected to the second pole of bidirectional triode thyristor.
With reference to Fig. 4, current detection circuit 13 includes current transformer L1, Transient Suppression Diode TVS and voltage stabilizing control electricity
Road 14, current transformer L1 are used to the high current of control circuit output changing into low current output, and input terminal is connected to two-way
The second pole of silicon-controlled BCR2, output terminal are connected to controller 1；Transient Suppression Diode TVS one end is connected to current transformer
The output terminal of L1, other end ground connection, for absorbing instantaneous large-current, achievees the purpose that protection element；Controlling circuit of voltage regulation 14 wraps
The diode D5 of series connection and diode D6 is included, wherein, the cathode of diode D5 is connected to power supply, the cathode of anode and diode D6
Connection, the plus earth of diode D6 can make the voltage stabilization in input controller 1 in certain value.
The operation principle of the utility model：
When the base stage of PNP triode Q4 and PNP triode Q5 receive the low level signal of the output of controller 1, PNP tri-
Pole pipe Q4 and PNP triode Q5 are both turned on；At this point, the base stage of NPN triode Q2 and NPN triode Q3 receive high level letter
Number, NPN triode Q2 and NPN triode Q3 are both turned on；The base stage of NPN triode Q1 receives high level signal, tri- poles of NPN at this time
Pipe Q1 is turned on；The base stage of NPN triode Q6 and NPN triode Q7 receive high level signal, tri- pole of NPN triode Q6 and NPN
Pipe Q7 is both turned on；The base stage of NPN triode Q8 receives high level signal, NPN triode Q8 conductings at this time.
It shines after the anode input high level of light emitting diode in silicon-controlled photoelectrical coupler U1 so that zero passage is silicon-controlled
Controlled silicon conducting in photoelectrical coupler, the control pole of bidirectional triode thyristor BCR1 obtain trigger signal, and bidirectional triode thyristor BCR1 is led
It is logical, it powers for motor 15；
It shines after the anode input high level of light emitting diode in silicon-controlled photoelectrical coupler U2 so that zero passage is silicon-controlled
Controlled silicon conducting in photoelectrical coupler, the control pole of bidirectional triode thyristor BCR2 obtain trigger signal, and bidirectional triode thyristor BCR2 is led
It is logical, it is powered for current transformer L1, electric current that can be in buffering input current mutual inductor L1；
The high current of input is converted into low current by current transformer L1, and under the pressure stabilization function of controlling circuit of voltage regulation 14
In input controller 1, when current is excessive, controller 1, which directly exports, stops the signal that motor 15 works, and is that motor 15 stops work
Make；
When motor 15 works, the current signal or 15 tach signal of motor on input motor 15 in controller 1 lead to
It crosses communicating circuit 3 to be sent in device end 4 for operating personnel's real time monitoring, safeguard measure can be carried out in advance to motor 15.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, several improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of three phase electric machine control system for numerically-controlled machine tool, which is characterized in that including：
Controller（1）；
Silicon controlled control circuit（2）, with the controller（1）Electrical connection, for controlling motor（15）Operation；
Current protecting circuit（5）, with the controller（1）With the silicon controlled control circuit（2）It is electrically connected, it is defeated for detecting
Enter motor（15）In size of current, and send feedback signal to controller（1）In；
Communicating circuit（3）, with the controller（1）Signal connects, for sending the controller（1）In motor（15）Parameter
Signal；
Device end（4）, with the communicating circuit（3）Signal connects, for receiving and showing motor（15）Parameter signal.
2. the three phase electric machine control system according to claim 1 for numerically-controlled machine tool, which is characterized in that the communication electricity
Road（3）Including chip MAX485.
3. the three phase electric machine control system according to claim 1 for numerically-controlled machine tool, which is characterized in that the equipment is whole
End（4）Using the mobile phone with display screen, tablet computer or desktop computer.
4. the three phase electric machine control system according to claim 1 for numerically-controlled machine tool, which is characterized in that described silicon-controlled
Control circuit（2）Including：
Total switch circuit（6）, with the controller（1）Signal connects；
First switch circuit（7）, input terminal is connected to the total switch circuit（6）, output terminal is connected to motor（15）Control
Circuit, for controlling the first isolated drive circuit（8）Break-make；
First isolated drive circuit（8）, with the first switch circuit（7）Signal connects, for avoiding signal interference；
First bidirectional triode thyristor circuit（9）, it is connected with the isolated drive circuit signal, output terminal is connected to motor（15）, use
In control motor（15）Break-make.
5. the three phase electric machine control system according to claim 4 for numerically-controlled machine tool, which is characterized in that the master switch
Circuit（6）Including：
PNP triode Q4, base stage and controller（1）Connection, emitter are connected to power supply；
PNP triode Q5, base stage and controller（1）Connection, emitter are connected to power supply；
The collector of the PNP triode Q4 and PNP triode Q5 is all connected to first switch circuit（7）.
6. the three phase electric machine control system according to claim 5 for numerically-controlled machine tool, which is characterized in that described first opens
Powered-down road（7）Including：
NPN triode Q2, base stage are connected to the collector of the PNP triode Q4, and collector is connected to power supply；
NPN triode Q3, base stage are connected to the collector of the PNP triode Q5, and collector is connected to NPN triode Q2's
Emitter, emitter ground connection；
NPN triode Q1, base stage are connected to the tie point of the NPN triode Q2 emitters and NPN triode Q3 collectors,
Collector is connected to power supply, emitter ground connection.
7. the three phase electric machine control system according to claim 6 for numerically-controlled machine tool, which is characterized in that described first every
From driving circuit（8）Including silicon-controlled photoelectrical coupler U1, the light-emitting diodes tube anode of the silicon-controlled photoelectrical coupler U1 connects
It is connected to the emitter of the NPN triode Q1, minus earth；The silicon-controlled output terminal connection of the silicon-controlled photoelectrical coupler U1
In the bidirectional triode thyristor circuit.
8. the three phase electric machine control system according to claim 5 for numerically-controlled machine tool, which is characterized in that the electric current is protected
Protection circuit（5）Including：
Second switch circuit（10）, input terminal is connected to the total switch circuit（6）, output terminal is connected to current detecting control
Circuit, for controlling current detection circuit（13）Break-make；
Second isolated drive circuit（11）, with the second switch circuit（10）Signal connects, for avoiding signal interference；
Second bidirectional triode thyristor circuit（12）, with second isolated drive circuit（11）With the motor（15）Control circuit is defeated
The equal signal connection of outlet, output terminal are connected to the current detection circuit（13）, for controlling the current detection circuit（13）
Break-make；
Current detection circuit（13）, input terminal is connected to the current detection control circuit, and output terminal is connected to the control
Device（1）.
9. the three phase electric machine control system according to claim 8 for numerically-controlled machine tool, which is characterized in that the electric current inspection
Slowdown monitoring circuit（13）Including：
Current transformer L1, the high current for control circuit to be exported change into low current output, and and controller（1）Even
It connects；
Transient Suppression Diode TVS, one end is connected to the output terminal of the current transformer L1, for absorbing instantaneous large-current,
The other end is grounded.
10. the three phase electric machine control system according to claim 9 for numerically-controlled machine tool, which is characterized in that the electric current
Detection circuit（13）Further include controlling circuit of voltage regulation（14）, the controlling circuit of voltage regulation（14）Diode D5 and two including series connection
Pole pipe D6, wherein, the cathode of diode D5 is connected to power supply, and anode is connected with the cathode of diode D6, the anode of diode D6
Ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721411258.6U CN207459709U (en) | 2017-10-27 | 2017-10-27 | For the three phase electric machine control system of numerically-controlled machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721411258.6U CN207459709U (en) | 2017-10-27 | 2017-10-27 | For the three phase electric machine control system of numerically-controlled machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207459709U true CN207459709U (en) | 2018-06-05 |
Family
ID=62282244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721411258.6U Active CN207459709U (en) | 2017-10-27 | 2017-10-27 | For the three phase electric machine control system of numerically-controlled machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207459709U (en) |
-
2017
- 2017-10-27 CN CN201721411258.6U patent/CN207459709U/en active Active
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