CN210402080U

CN210402080U - Double-numerical control system control circuit based on contactor long-time pressing interlocking circuit

Info

Publication number: CN210402080U
Application number: CN201921866967.2U
Authority: CN
Inventors: 潘喜利; 孙小芳
Original assignee: Xiangyang Vocational and Technical College
Current assignee: Xiangyang Vocational and Technical College
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-04-24
Anticipated expiration: 2029-10-31

Abstract

The utility model provides a double numerical control system control circuit based on a contactor long-press interlocking circuit, which comprises two numerical control systems, wherein the machine tool mechanical part shared by the two numerical control systems is connected through a coupler; the double numerical control system control circuit comprises a main shaft driver switching circuit, a conversion plate power supply logic circuit and a logic interlocking circuit, and realizes circuit switching of the numerical control system parts, so that one numerical control system is used for real processing teaching, and the other numerical control system is used for simulation teaching, thereby realizing the teaching and production dual effects of two different numerical control systems. The utility model discloses two sets of numerical control systems of being equipped with the different grade type on a lathe arrive the teaching effect of two lathes with a lathe, the cost spending that significantly reduces, simultaneously through the difference of the numerical control system of directly perceived comparison domestic numerical control system and import on same lathe in aspects such as performance, function, reachs the teaching purpose.

Description

Double-numerical control system control circuit based on contactor long-time pressing interlocking circuit

Technical Field

The utility model relates to a numerical control circuit, this patent relate to numerical control machining center with two numerical control system operation function, and this equipment is particularly useful for teaching, production education system and occupational skill training center as an organic whole.

Background

At present, numerical control processing equipment used in China is only provided with one numerical control system for each piece of equipment, whether processing or teaching. For the numerical control equipment used for teaching, the numerical control equipment not only needs to be capable of processing and producing, but also needs to know more knowledge in numerical control through the running condition of the equipment, and can compare the differences of different types of numerical control systems in processing performance, functional characteristics, PLC program programming modes and various indexes more intuitively through comparison operation on the spot. Therefore, a numerical control system is configured on one machine tool, and the teaching requirement can not be completely met. Some teaching mechanisms only need to purchase two machine tools equipped with different numerical control systems to make up for the defects in teaching in order to achieve the teaching purpose, even if the cost is increased when two machine tools are purchased, the requirement that the two systems are visually compared on the same machine tool cannot be met. The utility model discloses a two numerical control system of machining center is exactly two sets of numerical control system of being equipped with the different grade type on a lathe, reachs the teaching effect of two lathes with a lathe, and the cost spending that significantly reduces is simultaneously through the difference of the numerical control system of directly perceived comparison domestic numerical control system and import on same lathe in aspects such as performance, function, reachs the purpose of teaching.

Because the single numerical control system of the machine tool does not have the problems of system interlocking, signal conversion, compatibility and the like, the two types of numerical control systems arranged on one machining center need to solve the technical problems of switching, signal compatibility, system interlocking and the like of the two numerical control systems.

Disclosure of Invention

The utility model provides a technical problem adopt single numerical control system to the limitation that the teaching brought in order to overcome an equipment in the teaching, provide the duplicate protection of key locking and relay interlocking for dual numerical control system simultaneously, improve machining center's security level, the utility model discloses the implementation provides two sets of different numerical control systems on a machining center to two kinds of numerical control systems can simultaneous working.

The technical solution of the utility model is that: a double-numerical control system control circuit based on a contactor long-press interlocking circuit comprises a first numerical control system with effective high level of input voltage, a second numerical control system with low level of input voltage and a spindle driver, wherein the first numerical control system and the second numerical control system are respectively provided with an I/O (input/output) connecting module in signal connection with a second conversion board, the second conversion board is provided with a first connector array in signal connection with the I/O connecting module of the first numerical control system and a second connector array in signal connection with the I/O connecting module of the second numerical control system, the input conversion board and the output conversion board are respectively connected with the input connector and the output connector of the second connector array through signals;

the double numerical control system control circuit comprises a main shaft driver switching circuit, a conversion plate power supply logic circuit and a logic interlocking circuit;

the main shaft driver switching circuit comprises a shielding cable, a contactor KAF2 auxiliary double contact or a shielding cable and a contactor KAH2 auxiliary double contact which are connected in series between the analog signal output end of the first numerical control system or the second numerical control system and the instruction input interface of the main shaft driver, and a first conversion board and a shielding cable which are used for switching the instruction output interface of the main shaft driver and the coding signal feedback end of the first numerical control system or the second numerical control system;

the power supply switching circuit of the conversion board comprises a direct-current power supply VC1, a contactor KMH auxiliary dynamic contact connected in series between the grounding end GND of the input connector or the output connector of the second connector and the negative pole of the direct-current power supply VC1, a contactor KMH auxiliary dynamic contact connected in series between the positive end of the input connector or the output connector of the second connector and the positive pole of the direct-current power supply VC1, a contactor KMF auxiliary dynamic contact connected in series between the positive end of the first connector and the positive pole of the direct-current power supply VC1, and a KMF auxiliary dynamic contact connected in series between the grounding end of the first connector and the negative pole of the direct-current power supply VC 1;

the conversion board power supply logic circuit comprises a KMH relay coil and a KMF relay coil which are connected in parallel between two poles of a single-phase power supply and are respectively used for driving a KMH auxiliary dynamic contact of a contactor and a KMF auxiliary dynamic contact of the contactor to be closed, and a KAH1 auxiliary dynamic contact and a KAF1 auxiliary dynamic contact are respectively connected between the KMH relay coil and the KMF relay coil and the positive pole of the single-phase power supply in series;

the logic interlocking circuit comprises a KAH1 relay coil, a contactor KAF1 auxiliary dynamic breaking contact, a key button SB2H, a second numerical control system starting button SB1H, a KAF1 relay coil, a contactor KAH1 auxiliary dynamic breaking contact, a key button SB2F, a first numerical control system starting button SB1F, a contactor KAH1 auxiliary dynamic closing contact and a contactor KAF1 auxiliary dynamic closing contact, wherein the KAH1 relay coil and the contactor KAF1 relay coil are connected in series between the output end of a two-gear selector switch SA1 and the negative end of a switching power supply VC2, the KAF1 relay coil, the contactor KAH1 auxiliary dynamic breaking contact, the key button SB2F, the first numerical control system starting button SB1F, the contactor KAH1 auxiliary dynamic closing contact is connected with the second numerical control system starting button SB1H in parallel, the contactor KAF1 auxiliary dynamic closing contact is connected with the first numerical control system starting button SB F in parallel, the output end of the two-gear selector switch SA1 is electrically connected with the positive end of the switching power supply VC2 through a protective air switch Q, and the auxiliary dynamic-breaking contact of the contactor KAH1 and the auxiliary dynamic-breaking contact of the contactor KAF1 are disconnected, and the coil of the KAF2 relay is respectively connected with the coil of the KAF1 relay and the coil of the KAH2 relay and the coil of the KAH1 relay in parallel and used for driving the auxiliary dynamic-closing double contacts of the contactor KAF2 and the auxiliary dynamic-closing double contacts of the contactor KAH2 to be closed.

Furthermore, the positive terminal of the dc power supply VC1 is electrically connected to the contactor KMF auxiliary moving contact and the contactor KMH auxiliary moving contact through the protection switch QF7, respectively.

Furthermore, the conversion board power supply logic circuit also comprises a contactor KA3H auxiliary dynamic contact, a contactor MCF auxiliary dynamic contact and an MCH relay coil which are connected in series between two poles of the single-phase power supply.

Further, the positive terminal of the first connector comprises an input positive terminal and an output positive terminal, the input positive terminal is electrically connected to the positive terminal of the dc power supply VC1 through the relay coil KAF2 and the contactor KMF auxiliary make contact, and the output positive terminal is electrically connected to the positive terminal of the dc power supply VC1 through the relay coil KA5 and the contactor KMF auxiliary make contact.

Furthermore, the second numerical control system I/O connection module is provided with a switching value input pin for signal connection with the input connector and a switching value output pin for signal connection with the output connector.

Furthermore, the first conversion board comprises a DB25 jack seat, an XSF type DB25 plug pin and an XSH type DB25 plug pin, wherein the XSF type DB25 plug pin and the XSH type DB25 plug pin are plugged into the DB25 jack seat and are respectively in signal connection with the coding signal feedback ends of the first numerical control system and the second numerical control system through shielded cables, and the DB25 jack seat is also in signal connection with a command output interface of the spindle driver through the shielded cables.

Furthermore, the second conversion board is connected with an external input signal end through signals, and the second conversion board is also provided with an output signal pin.

The utility model discloses a two numerical control system sharing main shaft drive ware realizes first numerical control system, second numerical control system's arbitrary one and respective three-axis servo drive motor's mechanical connection through main shaft drive ware drive main shaft servo motor, when making first numerical control system and three-axis servo drive motor mechanical connection, second numerical control system and three-axis servo drive motor mechanical connection cut off, reach the mechanical basis that switches true numerical control and simulation numerical control.

The double numerical control systems respectively adopt FANUC-0I-MATE-MD and HNC-210B in China to switch on the same machining center; when the two numerical control systems work, external input and output signals are received and sent by the second conversion plate together, so that two signals with high level effectiveness and low level effectiveness are compatible, the connection of the first numerical control system and the second numerical control system to a signal output channel of the spindle driver is controlled through the logic interlocking circuit, the conversion plate power supply logic circuit is driven through the logic interlocking circuit to enable the conversion plate power supply switching circuit to selectively supply power to a connector of the first conversion plate, and the I/O connection modules of the first numerical control system and the second numerical control system are connected with the connector of the first conversion plate after signal connection is cut off. The circuit foundation for switching the real numerical control and the analog numerical control is achieved.

When two kinds of numerical control systems work simultaneously, the logic interlocking circuit enables mutual interlocking, a machining center can be automatically machined when a starting button is pressed, the working state of the machining center can still be kept when the starting button is released, and meanwhile, when a key is not inserted to close the key button, the control circuit cannot be authorized to use.

One system is used for real processing teaching, and the other system is used for simulation teaching, so that the teaching and production dual effects of two different numerical control systems are realized.

Drawings

FIG. 1 is a system connection diagram of a dual system machining center;

FIG. 2 is a circuit diagram of a logic interlock circuit of a double numerical control system control circuit based on a contactor long press interlock circuit;

FIG. 3 is a circuit diagram of a converter board power supply logic circuit of a double numerical control system control circuit based on a contactor long press interlock circuit;

FIG. 4 is a circuit diagram of a converter board power supply switching circuit of a double numerical control system control circuit based on a contactor long press interlock circuit;

FIG. 5 is a circuit diagram of a main shaft driver switching circuit of a double numerical control system control circuit based on a contactor long press interlock circuit;

FIG. 6 is a wiring diagram of a second conversion board signal input part dual system input signal compatibility example of a dual numerical control system control circuit based on a contactor long press interlock circuit;

fig. 7 is a wiring diagram of a second conversion board signal output part dual system output signal compatibility example of a dual numerical control system control circuit based on a contactor long press interlock circuit.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1, the dual numerical control system of the machining center includes a first numerical control system: the FANUC numerical control system consists of a FANUC-I/O module, a FANUC simulation main shaft module, a FANUC servo amplifier module and three first servo motors, and comprises: the main shaft numerical control system consists of a main shaft driver HSV-18S and a main shaft servo motor, and the second numerical control system comprises: the HNC-210B numerical control system comprises an HNC-210B numerical control system PLC controller, a servo drive unit and three second servo drive motors, a first conversion plate and a second conversion plate, wherein an I/O pin JD1B of a FANUC-I/O module is in signal connection with an I/O pin JD1A of a FANUC simulation spindle module, a pin COP10A of the FANUC simulation spindle module is in communication connection with a pin COP10B of the FANUC servo amplifier module through a servo optical cable FSSB, the three first servo motors are respectively in signal connection with shaft encoder interfaces 865 4, JF387 387 5 and JF3 of the FANUC servo amplifier module through code discs, the three first servo motors are respectively in electrical connection with power interfaces CZ2L, CZ2M and CZ2N of the FANUC servo amplifier module through code disc signals, the FANUC simulation spindle module is also in signal connection with the first conversion plate through a JA signal feedback end pin JA4 signal, the JA 2 interface XS 40 of the FANUC simulation spindle driver outputs spindle signals and the JA 3618-3618 interface of the FANUC simulation spindle driver, the connectors CB104, CB105, CB106 and CB107 of the FANUC-I/O module are respectively in signal connection with the connectors CB104, CB105, CB106 and CB107 in the connector array of the second conversion board;

a feed shaft interface COMMAND of the HNC-210B numerical control system PLC controller is in signal connection with a COMMAND interface of the servo drive unit HSV-160B, three second servo motors are respectively and electrically connected with a power supply interface (U, V, W, PE) of the servo drive unit HSV-160B, code discs of the three second servo motors are also respectively in signal connection with an encoding interface ENCDER of the servo drive unit HSV-160B, an encoding signal feedback end pin XS9 of the HNC-210B numerical control system PLC controller is respectively in signal connection with a first conversion plate, an analog spindle output pin XS91 of the HNC-210B numerical control system PLC controller is in signal connection with an instruction input interface XS4 of the spindle driver HSV-18S, so that a spindle rotating speed analog signal of the HNC-210B numerical control system PLC controller is output to an instruction input interface XS4 of the spindle driver HSV-18S through an XS91 port, a coded disc feedback signal of the spindle servo motor is fed back to a coding signal feedback end pin XS9 of the HNC-210B numerical control system PLC controller through a command output interface XS4 of the spindle driver HSV-18S through a first conversion plate, a switching value input pin XS10 and an XS11, a switching value output pin XS20 and an XS21 are arranged in an I/O connection module of the HNC-210B numerical control system PLC controller, and are respectively connected to an input connector FNI1 and an input connector FNI2 of a second conversion plate, and an output connector FNO1 and an output connector FNO 2;

a coded disc feedback signal of the spindle servo motor is fed back to a code signal feedback end pin JA41 of the FANUC analog spindle module through a command output interface XS4 of the spindle driver via a first conversion board, the coded disc of the spindle servo motor is in signal connection with a photoelectric code input interface XS3 of the spindle driver HSV-18S and used for feeding back a spindle signal, and the spindle servo motor is also electrically connected with a three-phase output terminal (U, V, W, PE) of the spindle driver HSV-18S and used for obtaining a power supply.

External input is transmitted to the FANUC-I/O module and the I/O connection module of the HNC-210B numerical control system PLC controller through the second conversion plate, and signals are output by the FANUC-I/O module and the I/O connection module of the HNC-210B numerical control system PLC controller through the second conversion plate.

The utility model discloses a logic interlocking circuit is controlled by two grades of select switch SA1, relies on stirring two grades of select switch SA1 and selects the numerical control system who is used for processing at present to form the interlocking with unselected numerical control system. Because the power supply of the operating system of the double numerical control system is provided by the system power supply part carried by the operating system, the numerical control system which is not selected can still operate, but can only be in a simulation working state due to interlocking, namely the interface of the system can simulate and drive the first servo driving motor or the second servo driving motor to rotate, but the transmission mechanism driven by the main shaft driver shared by the two machine tool numerical control systems is mechanically disconnected with the transmission mechanism of the HNC-210B numerical control system PLC controller or the FANUC simulation main shaft module.

As shown in fig. 4, the two-phase

power input terminals

220E and 220C of the machine tool power supply system provide a dc +24V voltage through the switching power supply VC2, for example, the positive terminal 24C of the switching power supply VC2 in fig. 2 is electrically connected to the stator of the two-stage selection switch SA1 through the protection switch QF8, and the output terminals KAH and KAF of the two-stage selection switch SA1 and the negative terminal 101 of the switching power supply VC2 include a contactor interlock circuit connected in parallel: the HNC-210B numerical control system starting circuit comprises a second numerical control system starting button SB1H, a key button SB2H, a contactor KAF1 auxiliary dynamic-break contact, a KAH1 relay coil and a contactor KAH1 auxiliary dynamic-close contact which is connected with the second numerical control system starting button SB1H in parallel, wherein the second numerical control system starting button SB2H, the contactor KAF1 auxiliary dynamic-break contact and the KAH1 relay coil are sequentially connected in series; the FANUC numerical control system starting circuit comprises a first numerical control system starting button SB1F, a key button SB2F, a contactor KAH1 auxiliary dynamic-break contact, a KAF1 relay coil and a contactor KAF1 auxiliary dynamic-close contact which is connected with the first numerical control system starting button SB1F in parallel.

The KAH1 relay coil is also connected in parallel with the KAH2 relay coil, and the KAF1 relay coil is also connected in parallel with the KAF2 relay coil.

When the HNC-210B numerical control system is selected, the two-gear selection switch SA1 is shifted to the output end KAH, a starting key of the second numerical control system is inserted into the key button SB2H, the second numerical control system starting button SB1H is pressed down, and a KAH1 relay coil is electrified, because a contactor KAH1 auxiliary dynamic-break contact is connected in series in a starting circuit of the HNC-210B numerical control system, an interlocking loop is formed, at the moment, the machine tool is in a state that the HNC-210B numerical control system is selected to be in a current machining system state, meanwhile, a contactor KAH1 connected with the second numerical control system starting button SB1H in parallel assists in closing the contact to be attracted, the second numerical control system starting button SB1H is released, and the HNC-210B numerical control system is still in the current machining system.

Similarly, if the FANUC numerical control system is selected, the two-gear selection switch SA1 is shifted to the output end KAF, the starting key of the first numerical control system is inserted into the key button SB2F, and the starting button SB1F of the first numerical control system is pressed, so that the machine tool can be in the state that the selected FANUC numerical control system is in the current processing system.

As shown in fig. 4, two phase power

supply input ends

220E and 220C of the machine tool power supply system provide a dc +24V voltage through a dc power supply VC1, a negative electrode 100 of the dc power supply VC1, an output end 100F, and an output end 100H are respectively connected in series with a contactor KMF auxiliary moving contact and a contactor KMH auxiliary moving contact, a positive electrode 24A of the dc power supply VC1 is electrically connected to a static sheet of a protection air switch QF7, and a moving sheet of the protection air switch QF7, an output end 24VH, and an output end 24VF are respectively connected in series with a contactor KMH auxiliary moving contact and a contactor KMF auxiliary moving contact. As shown in fig. 3, the two

poles

110V and 110N of the single-phase power supply include a parallel conversion board power supply logic circuit: the power supply logic circuit of the HNC-210B numerical control system conversion plate comprises a KAH1 auxiliary dynamic on contact of a contactor and a KMH relay coil which are sequentially connected in series, the FANUC numerical control system conversion plate power supply logic circuit comprises a KAF1 auxiliary dynamic on contact of the contactor and a KMF relay coil which are sequentially connected in series, and the power supply logic circuit of the main shaft numerical control system conversion plate comprises a KA3H auxiliary dynamic on contact of the contactor, a MCF auxiliary dynamic off contact of the contactor and an MCH relay coil which are sequentially connected in series.

As shown in fig. 4 and fig. 6b, the ground GND and the positive electrode of the input connector FNI1 and the input connector FNI2 of the second conversion board are electrically connected to the output terminal 100H and the output terminal 24VH, respectively, and different second servo motor limit switches are respectively connected in series between the input signal pins P0, P1, P2 of the input connector FNI1 and the input connector FNI2 of the second conversion board and the power terminal 24V 1. And different second servo motor limit switches are used as external input signal ends.

As shown in fig. 4 and fig. 6a, the address pins a02, B02, a03 of the connectors CB104, CB105, CB106 of the second converter board are electrically connected to different first servo motor limit switches, respectively, and the auxiliary moving contact of the contactor KAF2 is connected in series between the positive poles of the connectors CB104, CB105, CB106 of the second converter board and the output terminal 24 VC.

As shown in fig. 3 and 4, when the HNC-210B numerical control system is in the current machining system state, the contactor KAH1 assists the make contact to be closed, the KMH relay coil is supplied with power by two

poles

110V and 110N of the single-phase power supply, the contactor KMH in fig. 4 assists the make contact to be closed, and the dc power supply VC1 can provide +24V voltage for the I/O connection module of the HNC-210B numerical control system PLC controller. Similarly, when the FANUC numerical control system is in the current processing system state, the dynamic contact of the contactor KAF1 is closed, the KMF relay coil is supplied with power through two

poles

110V and 110N of the single-phase power supply, the contactor KMF in the figure 4 assists the dynamic contact to be closed, and the direct-current power supply VC1 can provide +24V voltage for the FANUC-I/O module.

The FANUC numerical control system and the HNC-210B numerical control system transmit output signals together through the first conversion plate and the spindle driver HSV-18S to receive coding feedback signals for driving the spindle servo motor.

Referring to fig. 5, which is a spindle driver switching circuit, when the two-stage selection switch SA1 in fig. 2 is switched to the FANUC numerical control system, the auxiliary double contact of the contactor KAH2 in fig. 5 is kept normally open, and the auxiliary double contact of the contactor KAF2 is kept closed, so that the SVC and ES pins of the analog spindle output pin JA40 of the FANUC analog spindle module are connected to the AN + and AN-pins of the command input interface XS4 of the spindle driver HSV-18S through a shielded cable, thereby realizing that the FANUC numerical control system controls the rotation speed of the spindle servo motor through analog quantity. The first conversion board comprises a DB25 jack seat, an XSF type DB25 plug pin and an XSH type DB25 plug pin, wherein the XSF type DB25 plug pin and the XSH type DB25 plug pin are plugged in the DB25 jack seat and are respectively connected with the coding signal feedback ends of a FANUC numerical control system and an HNC-210B numerical control system through shielded cables, and the DB25 jack seat is also connected with a command output interface of the spindle driver through shielded cables.

As shown in FIG. 5b, the command output interface XS4 of the spindle driver HSV-18S is connected with a DB25 socket (XSHF) on the first conversion board by using a twisted pair shielded cable, and

pins

5, 6, 7, 8, 15 and 17 of an encoding signal feedback terminal pin JA41 of the FANUC analog spindle module are connected with pins 1 to 6 of a DB25 plug pin (XSF) through the twisted pair shielded cable. The DB25 plug pin (XSF) is correspondingly inserted into the 1-6 pins of the DB25 socket (XSHF) to realize that the feedback information of the spindle driver HSV-18S is transmitted to the FANUC simulation spindle module.

When the two-stage selection switch SA1 in FIG. 2 is switched to the HNC-210B numerical control system, the contactor KAF2 in FIG. 5 assists the normally open of the double contacts, and the contactor KAH2 assists the closing of the double contacts, so that the OUTA pins and the GND pins of the analog spindle output pin XS91 of the HNC-210B numerical control system PLC controller are connected with the AN + and AN-pins of the port of the spindle driver HSV-18 SXSS 4 through shielded cables, and the purpose that the HNC-210B numerical control system PLC controller controls the rotating speed of the spindle servo motor through analog quantity is achieved. Referring to fig. 5a, the command output interface XS4 of the spindle driver HSV-18S is connected to the DB25 socket (XSHF) of the first conversion board by using a twisted pair shielded cable, and the coded signal feedback terminal pin XS9 of the HNC-210B nc system PLC controller is connected to pins 1 to 11, 13 and 14 of the DB25 pin (XSH) by using a twisted pair shielded cable. The DB25 plug pins (XSH) are correspondingly inserted into pins 1-11, 13 and 14 of a DB25 jack Socket (SXHF) to realize that the feedback information of the spindle driver HSV-18S is transmitted to the HNC-210B numerical control system PLC.

The input/output (I/O) signals of the HNC-210B numerical control system and the FANUC numerical control system are integrated on the second conversion board shown in figure 1, wherein the second conversion board needs to realize the compatibility and interlocking of the I/O signals, the normal transmission of the signals can be ensured, and the interlocking between the signals during the system switching can be ensured.

Because the I/O signal of the FANUC numerical control system adopts a PNP (high level effective) mode, and the I/O signal of the HNC-210B numerical control system adopts an NPN (low level effective) mode, the second conversion board is provided with an input conversion board with the type of HIO-3201, peripheral PNP switching value input signals are converted into NPN signals which are provided for the switching value input of the HNC-210B numerical control system, and the second conversion board is also provided with an output conversion board with the type of HIO-3202 for converting NPN output signals of the HNC-210B numerical control system into PNP signals, so that the HNC-210B numerical control system and the FANUC numerical control system can be compatible with the I/O signals of the same type.

As shown in fig. 6a, taking the X positive limit input signal as an example, the signal collected at the input terminal of X0 is used as the common input signal. For the FANUC numerical control system, when the FANUC numerical control machine tool is in the X-axis positive limit, the X-axis positive limit switch is closed, and a power supply end 24V1(+24V) inputs a signal into the FANUC-I/O module through the X-axis positive limit switch and the connector CB 105. For the HNC-210B numerical control system, as shown in FIG. 6B, when the HNC-210B numerical control machine tool is at the X-axis positive limit, the X-axis positive limit switch is closed, and the output end 24VH (+24V) inputs a signal into the HNC-210B numerical control system PLC controller through the X-axis positive limit switch, the input connector FNI1 (the input conversion plate HIO-3201) and the switching value input pin XS 10. I.e. compatibility of the input signals is achieved.

As shown in fig. 6a, taking the X positive limit input signal as an example, the signal collected at the input terminal of X0 is used as the common input signal. When the FANUC numerical control system is selected as the processing system, the contact KAF2 assists the closing contact to be closed, and the power supply end 24V1(+24V) assists the closing contact to supply power to the connector CB105 through the contact KAF2, so that the input of signals is realized. At this time, the output terminal 24VH and the output terminal 100H connected to the input connector FNI1 are powered off due to the logic interlock circuit, so that the signal of the HNC-210B numerical control system cannot be input. Similarly, when the HNC-210B numerical control system is selected as the processing system, the contactor KAF2 assists the opening of the movable contact, the connector CB105 is powered off, signals of the FANUC numerical control system cannot be input, the output end 24VH and the output end 100H which are connected with the input connector FNI1 can supply power, and signals of the HNC-210B numerical control system can be input. I.e. the interlocking of the input signals is achieved.

As shown in fig. 7a, taking the cooling output signal as an example, the signal at the output terminal of Y5 is used as the common output signal. For the FANUC numerical control system, when the machine tool is in a cooling function, the FANUC numerical control system directly outputs a high-level control signal (Y5 line mark) through the connector CB105 and then sequentially through the relay coil KA5 and the output end 100F (0V), and the output of the cooling signal is completed. For the HNC-210B numerical control system, as shown in fig. 7B, when the machine tool is in the cooling function, the system output signal outputs a low level control signal through the switching value output terminal XS20, and is converted into a high level signal (Y5 line mark) through the input connector FNO1(HIO-3202 output conversion board), and the system signal is output through the relay coil KA5 and the output terminal 100H (0V). I.e. compatibility of the input signals is achieved.

As shown in fig. 7, taking the cooling output signal as an example, the signal at the output terminal of Y5 is used as the common output signal. When the FANUC numerical control system is selected as the processing system, the interlocking circuit of the control part of the dual system in the figures 2 and 3 is connected with the output ends 24VF and 100F, and is disconnected with the output ends 24VH and 100H, namely the output of the I/O signal of the FANUC numerical control system and the disconnection output of the I/O signal of the HNC-210B numerical control system are realized. The same is true when the HNC-210B numerical control system is selected as the processing system. I.e. the interlocking of the output signals is achieved.

The utility model discloses realize the dual efficiency of teaching and production of two kinds of different numerical control systems.

Claims

1. A double-numerical control system control circuit based on a contactor long-press interlocking circuit comprises a first numerical control system with effective high level of input voltage, a second numerical control system with effective low level of input voltage and a spindle driver, wherein the first numerical control system and the second numerical control system are respectively provided with an I/O (input/output) connecting module in signal connection with a second conversion board, the second conversion board is provided with a first connector array in signal connection with the I/O connecting module of the first numerical control system, a second connector array in signal connection with the I/O connecting module of the second numerical control system, an input conversion board for converting high level input signals into low level input signals and an output conversion board for converting low level output signals into high level output signals, the input conversion board and the output conversion board are respectively in signal connection with an input connector and an output connector of the second connector array, the method is characterized in that: the control circuit of the double numerical control system comprises a main shaft driver switching circuit, a conversion plate power supply logic circuit and a logic interlocking circuit,

the logic interlocking circuit comprises a KAH1 relay coil, a contactor KAF1 auxiliary dynamic breaking contact, a key button SB2H, a second numerical control system starting button SB1H, a KAF1 relay coil, a contactor KAH1 auxiliary dynamic breaking contact, a key button SB2F, a first numerical control system starting button SB1F, a contactor KAH1 auxiliary dynamic closing contact and a contactor KAF1 auxiliary dynamic closing contact, wherein the KAH1 relay coil and the contactor KAF1 relay coil are connected in series between the output end of a two-gear selector switch SA1 and the negative end of a switching power supply VC2, the KAF1 relay coil, the contactor KAH1 auxiliary dynamic breaking contact, the key button SB2F, the first numerical control system starting button SB1F, the contactor KAH1 auxiliary dynamic closing contact is connected with the second numerical control system starting button SB1H in parallel, the contactor KAF1 auxiliary dynamic closing contact is connected with the first numerical control system starting button SB F in parallel, the output end of the two-gear selector switch SA 5 is electrically connected with the positive end of the switching power supply VC2 through a protective air switch Q, and the auxiliary dynamic-breaking contact of the contactor KAH1 and the auxiliary dynamic-breaking contact of the contactor KAF1 are disconnected, and the coil of the KAF2 relay is respectively connected with the coil of the KAF1 relay and the coil of the KAH2 relay and the coil of the KAH1 relay in parallel and used for driving the auxiliary dynamic-closing double contacts of the contactor KAF2 and the auxiliary dynamic-closing double contacts of the contactor KAH2 to be closed.

2. The double numerical control system control circuit based on the contactor long press interlock circuit as claimed in claim 1, wherein the positive terminal of the dc power supply VC1 is electrically connected to the contactor KMF auxiliary make contact and the contactor KMH auxiliary make contact through a protection switch QF7, respectively.

3. The dual numerical control system control circuit based on the contactor long press interlock circuit as claimed in claim 1, wherein the conversion board power supply logic circuit further comprises a contactor KA3H auxiliary make contact, a contactor MCF auxiliary make-break contact and an MCH relay coil which are connected in series between two poles of a single-phase power supply.

4. The contactor long press interlock circuit based dual numerical control system control circuit of claim 1, wherein the positive terminal of the first connector comprises an input positive terminal and an output positive terminal, the input positive terminal is electrically connected to the positive terminal of the dc power source VC1 through the relay coil KAF2 and the contactor KMF auxiliary make contact, and the output positive terminal is electrically connected to the positive terminal of the dc power source VC1 through the relay coil KA5 and the contactor KMF auxiliary make contact.

5. The double numerical control system control circuit based on the contactor long-press interlock circuit according to claim 1, wherein the second numerical control system I/O connection module is provided with a switching value input pin of a signal connection input connector and a switching value output pin of a signal connection output connector.

6. The control circuit of the dual numerical control system based on the contactor long press interlock circuit, as claimed in claim 1, wherein the first converting plate comprises a DB25 jack socket, an XSF type DB25 plug pin, an XSH type DB25 plug pin, an XSF type DB25 plug pin and an XSH type DB25 plug pin plugged in the DB25 jack socket and respectively connected with the coded signal feedback terminals of the first numerical control system and the second numerical control system through shielded cables, and the DB25 jack socket is further connected with the command output interface of the spindle driver through shielded cables.

7. The dual numerical control system control circuit based on the contactor long press interlock circuit according to claim 1, wherein the second conversion board is connected to an external input signal terminal through a signal, and the second conversion board is further provided with an output signal pin.