CN202285141U

CN202285141U - Wireless remote control for numerical control cutting machine

Info

Publication number: CN202285141U
Application number: CN2011204500605U
Authority: CN
Inventors: 罗洪辉; 唐海燕; 刘伟军
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-11
Filing date: 2011-11-11
Publication date: 2012-06-27
Anticipated expiration: 2021-11-11

Abstract

Provided is a wireless remote control for a numerical control cutting machine. An array keyboard is arranged on the upper surface of a box body, a wireless transmitting device is installed in the box body, and a transmitting antenna connected with the wireless transmitting device is installed at the top of the box body. The wireless transmitting device is mainly composed of an operational amplifier chip, a single chip microcomputer program chip, an optical coupler isolation chip, a coding transmitting chip and a saw resonator. A wireless receiving device is correspondingly installed on the numerical control cutting machine and is mainly composed of an integrated circuit block, a saw resonator, a coding receiving chip and a single chip microcomputer program chip. The wireless remote control controls working state of the numerical control cutting machine, is convenient to use, reduces labor intensity of operators and is favorable for improving cutting accuracy.

Description

The Digiplex of numerical control cutting machine

Technical field

A kind of electric device of remote operation numerical control cutting machine, belongs to numerical control cutting machine corollary equipment.

Background technology

At present, operating personnel must stand and worked before the operation dish of numerical control cutting machine, it is impossible to be free to exit, can only be at a distance while observing burning torch working condition, and one side operating numerical control device is very inconvenient.Therefore inefficiency, labor intensity is big.

The content of the invention

The purpose of this utility model is to provide a kind of wireless remote control box of numerical control cutting machine, accomplishes remote operation numerical control cutting machine running status.

Cartridge upper surface of the present utility model is matrix keyboard, has ignition key K into matrix arrangement₅, horizontal backspace key K₄, the first cutting torch rise key K₁₆, the first cutting torch drop key K₁₇, cutting oxygen key K₁, back spacer K₂, longitudinal direction enter key K₁₀, longitudinal backspace key K₉, accelerator key K₈, deceleration key K₇, continue key K₆, operation key K₁₅, laterally enter key K₁₄, the second cutting torch rise key K₁₃, the second cutting torch drop key K₁₂, Pause key K₁₁, advance key K₃, box body (1) is built with wireless launcher, and box body (1) top is equipped with the transmitting antenna ANT being connected with wireless launcher₁。

Wireless launcher structure is as follows：1~5 pin difference concatenation operation amplifier chip B of

matrix keyboard

₁10,6,5,4,3 pin, 6,9 pin of matrix keyboard meet B respectively₁5,4 pin, B ₁1,2 pin connection SCM program chip B ₂2 pin, B₁8 pin connection B₂3 pin, 7,8,10 pin of matrix keyboard connect resistance R respectively₁₇、R₁₈、R₁₉One end, R₁₇、R₁₈、R₁₉The other end and B ₁9,14 pin be all serially connected on three-terminal voltage-stabilizing pipe Z 5V positive sources, three-terminal voltage-stabilizing pipe Z input connection 12V DC power anodes, another input end grounding；B₁7 pin and B₂10 pin ground connection,

B

₂4,5 pin between be serially connected with crystal oscillator frequency stabilizer W, W two ends respectively by electric capacity C₅、C₆Ground connection, Z 5V positive sources meet B all the way₂20 pin, another road is through electrochemical capacitor C₄Meet B₂1 pin, B₂1 pin through resistance R₄Ground connection, B₂18,17,16 pin difference connection matrix button (2) 7,8,10 pin, B₂15~12 pin connect the first light-coupled isolation chip B respectively₃2,4,6,8 pin, B ₃1,3,5,7 pin respectively through resistance R₁₃~R₁₆Connect Z 5V positive sources, the second light-coupled isolation chip B₄1,3 pin respectively through resistance R₁₁、R₁₂Connect Z 5V positive sources,

B

₄2,4 pin difference connection matrix keyboard (2) 11,12 pin, matrix keyboard (2) 13 pin ground connection, B₄8,6 pin and

B

₃16,14,12,10 pin be serially connected on 12V DC power anodes, B ₄7,5 pin and B3 15,13,11,9 pin on the one hand respectively through resistance R₅~R₁₀Ground connection, another aspect are respectively through diode D₁~D₀Meet coded excitation chip B₅18 pin, B₅1~6 pin on connect code switch K respectively₁₉~K₂₄Signal end, K₁₉~K₂₄Negative terminal and B ₅9,14 pin ground connection, K₁₉~K₂₄Anode be serially connected in B₅18 pin on, B₅18 foot meridian capacitor C₃Ground connection, B₅17 pin meet triode Q through resistance R 1₁Resistance R is connected between base stage, B5 15,16 pin₃, B₅7,8 pin meet B respectively₄7,5 pin, B₄10~13 pin meet B respectively₃15,13,11,9 pin, Q₁Grounded emitter, Q₁Colelctor electrode connection high frequency power pipe Q₂Emitter stage, Q₂Base stage through sound table resonator SAW₁Ground connection, resistance R₂One termination Q₂Base stage, the other end is divided into four tunnels：The first via is through electric capacity C₂Meet Q₂Emitter stage, the second tunnel connection SAW₁Transition joint, the 3rd tunnel is through inductance coil L₁12V DC power anodes are connect, the 4th tunnel is through inductance coil L₂Meet Q₂Colelctor electrode, Q₂Colelctor electrode is through electric capacity C₁Connect transmitting antenna ANT₁。

Radio receiver is accordingly housed, radio receiver structure is as follows on numerical control cutting machine：Integrated circuit block B₆18 pin connection 5V positive sources, electric capacity C₂₁、C₈It is connected across on power supply positive and negative electrode, inductance coil L₃One termination B₆17 pin, the other end be divided into two tunnels：The first via is through electric capacity C₉Meet B₆16 pin, the second tunnel is through resistance R₂₆, electric capacity C₁₇Connect power cathode, resistance R₂₅One termination B₆18 pin, another terminating resistor R₂₆With electric capacity C₁₇Junction, electric capacity C₁₀One end connection reception antenna ANT₂, the other end be divided into three tunnels：The first via is through electric capacity C₁₂Meet B ₆14 pin, the second tunnel is through electric capacity C₁₁Power cathode, the 3rd tunnel are connect through inductance coil L₄Connect power cathode, B ₆13,12,10 pin respectively through electric capacity C₁₃、C₁₄、C₁₅Connect power cathode, B₆11 foot meridian capacitor C₁₆Meet B₆3 pin, B₆1 foot meridian capacitor C₂₄Connecting triode Q₃Emitter stage, Q₃Colelctor electrode connects positive source, Q₃Base stage is through sound table resonator SAW₂Meet power cathode, resistance R₂₁It is connected across Q₃On colelctor electrode and base stage, electric capacity C₂₂It is connected across Q₃On emitter stage and base stage, SAW₂Intermediate contact connects power cathode,

B

₆2,4 pin respectively through electric capacity C₂₅、C₂₆Connect power cathode, B ₆5 foot meridian capacitor C₇, resistance R₂₂Connect Q₃Emitter stage, electric capacity C₂₃With resistance R₂₂Parallel connection, B₆7 pin connect power cathode, B₆9 pin through resistance R₂₄Connect power cathode, B₆8 pin connect coding all the way and receive chip B ₇14 pin, another road is through resistance R₂₃Meet B₇18 pin and positive source, B₇15,16 pin between series resistor R₂₈, B₇17 pin meet triode Q₄Base stage, B₇1~6 pin connect switch decoder K respectively₂₅~K₃₀Signal end, switch decoder K₂₅~K₃₀Negative terminal and Q₄Emitter stage, B₇9 pin be serially connected on power cathode, switch decoder K₂₅~K₃₀Positive termination positive source, resistance R₂₇One termination positive source, the other end connect Q through LED₄Colelctor electrode, B₇7,8 and 10~13 pin connect SCM program chip B respectively₈7~2 pin, B₈1,8 pin connect power supply positive and negative electrode, B respectively₈20~16 pin respectively through 24V DC power anodes line, IN1~IN4 signal wires connect numerical control device, B₈15~11 pin respectively through the rising of the first cutting torch, the rising of dropping signal line, the second cutting torch, dropping signal line, 24V DC power cathodes line connect relay automaton.

The operation principle of wireless launcher is as follows：A signal part from matrix keyboard is through operational amplifier chip B₁SCM program chip B is inputed to after amplification ₂2,3 pin, another part inputs to B₁16~18 pin, by SCM program chip B₂After internal processes processing, 4 road low level signals are exported to the first light-coupled

isolation chip B

₃2,4,6,8 pin, the second light-coupled

isolation chip B

₄2,4 pin provide ground signalling by matrix keyboard, through internal optocoupler handle after, by B₃9,11,13,15 pin and B₄The road 12V level controling signals output of 5,7 pin composition 6 there is provided give coded excitation chip B ₅13,12,11,10,8,7 pin, by encoding from B₅17 pin output high level, launched by radiating circuit by transmitting antenna ANT.SCM program chip B₂, operational amplifier chip B₁Power supply be by 12V straight lines power supply pass through three-terminal voltage-stabilizing pipe Z provide.Crystal oscillator frequency stabilizer W, electric capacity C₅、C₆Give SCM program chip B₂Stable frequency is provided, to ensure B₂Stability.Resistance R₁、R₂, triode Q₁, high frequency power pipe Q₂Constitute electronic switch type modulation circuit, when encoder is output as high level, Q₁Conducting, vibration transmitting level work；When encoder is output as low level, Q₁Load is stopped, and vibration emitting stage is stopped, so as to complete ASK modulation.Resistance R₂, triode Q₂, electric capacity C₂, inductance coil L₁、L₂And sound table resonator SAW₂Constitute 315MHZ oscillation of power level, high frequency power pipe Q₂, inductance coil L₂, electric capacity C₁、C₂Antenna matching network is constituted, antenna impedance is matched with oscillator stage, it is ensured that its steady operation.This emitter accomplishes that 729 groups of address yardage is not repeated.

The operation principle of antenna receiving unit is as follows：With integrated circuit block B₆For core parts, the superhet 316.8MHZ receivers of ASK modulation /demodulation, B are constituted₆1,2 pin be local oscillation loop element connection end, an external LC frequency-selective network can produce local oscillation signal.In order to improve stability, local oscillation signal of the present utility model is produced with external sound table frequency stabilization oscillating circuit, passes through B₆1 pin input.The data-signal demodulated is from B₆8 pin be input to coding and receive chip B ₇14 pin, into decoder decoding, by B ₇13,12,11,10,8,7 pin export 6 road signals to SCM program chip B₈, through B₈After progress internal processes processing, B₈16~20 pin export five road signals to numerical control device, B₈11~15 pin export five road signals and give relay automaton.

Because transmitter-receiver device of the present utility model all employs SAW resonator frequency stabilization, therefore working stability and remote with remote control distance, the requirement of industry and the product for civilian use to stability and reliability can be met completely.The utility model applies the long-distance remote control operation in industrial numerical control field.

This remote control distance of set component on open ground is generally up to 120M~150M, and power supply is powered is powered using 12V batteries composition or D.C. regulated power supply.

It should be noted that：Transmitter circuitry is designed by the requirement of discontinuous, therefore the time of each button must not exceed the ratio between 1 second kind, and on/off and should be less than 1.Antenna impedance, which is mismatched, can also influence launching effect, or even damage transmitting tube, therefore must all pull out telescopic antenna before transmitting.

Compared with the prior art, it is the working condition of remote operation numerical control cutting machine the characteristics of the utility model, it is easy to use, mitigate labor intensity of operating staff., can be with remote operation numerical control cutting machine because operating personnel are while close-ups burning torch is run, therefore be conducive to the raising of cutting accuracy.

Brief description of the drawings

Fig. 1 is wireless remote control box structural representation

Fig. 2 is wireless launcher circuit diagram

Fig. 3 is radio receiver circuit diagram

Embodiment

As illustrated, the upper surface of box body 1 is matrix keyboard 2, there is ignition key K into matrix arrangement₅, horizontal backspace key K₄, the first cutting torch rise strong K₁₆, the first cutting torch drop key K₁₇, cutting oxygen key K₁, back spacer K₂, longitudinal direction enter key K₁₀, longitudinal backspace key K₉, accelerator key K₈, deceleration key K₇, continue key K₆, operation key K₁₅, laterally enter key K₁₄, the second cutting torch rise key K₁₃, the second cutting torch drop key K₁₂, Pause key K₁₁, advance key K₃, box body 1 is built with wireless launcher, and the top of box body 1 is equipped with the transmitting antenna ANT being connected with wireless launcher₁；Wireless launcher structure is as follows：1~5 pin difference concatenation operation amplifier chip B of matrix keyboard 2₁10,6,5,4,3 pin of (model 74LS 164), 6,9 pin of matrix keyboard 2 meet B respectively₁5,4 pin, B ₁1,2 pin connection SCM program chip B ₂2 pin of (model AT89C2051), B₂8 pin connection B₂3 pin, 7,8,10 pin of matrix keyboard 2 connect resistance R respectively₁₇、R₁₈、R₁₉One end, R₁₇、R₁₈、R₁₉The other end and B ₁9,14 pin be all serially connected on three-terminal voltage-stabilizing pipe Z (model LM7805) 5V positive sources, three-terminal voltage-stabilizing pipe Z input connection 12V DC power anodes, another input end grounding；B₁7 pin and B₂10 pin ground connection,

B

₂4,5 pin between be serially connected with 6M crystal oscillator frequency stabilizer W, W two ends respectively by electric capacity C₅、C₆Ground connection, Z 5V positive sources meet B all the way₂20 pin, another road is through electrochemical capacitor C₄Meet B₂1 pin, B₂1 pin through resistance R₄Ground connection, B₂18,17,16 pin difference connection matrix button 27,8,10 pin, B₂15~12 pin connect the first light-coupled isolation chip B respectively₃2,4,6,8 pin of (model TLD521-4), B ₃1,3,5,7 pin respectively through resistance R₁₃~R₁₆Z 5V positive sources are connect, the second light-coupled isolation chip B4 (model D521-2) 1,3 pin are respectively through resistance R₁₁、R₁₂Connect Z 5V positive sources,

B

₄2,4 pin difference connection matrix keyboard 2 11,12 pin, the 13 pin ground connection of matrix keyboard 2, B₄8,6 pin and

B

₃16,14,12,10 pin be serially connected on 12V DC power anodes, B ₄7,5 pin and B₃15,13,11,9 pin on the one hand respectively through resistance R₅~R₁₀Ground connection, another aspect are respectively through diode D₁~D₆Meet coded excitation chip B₅18 pin of (model PT2262), B₅1~6 pin on connect code switch K respectively₁₉~K₂₄Signal end, K₁₉~K₂₄Negative terminal and B ₅9,14 pin ground connection, K₁₉~K₂₄Anode be serially connected in B₅18 pin on, B₅18 foot meridian capacitor C₃Ground connection, B₅17 pin through resistance R₁Meet triode Q₁Base stage, B₅15,16 pin between be connected to resistance R₃, B₅7,8 pin meet B respectively₄7,5 pin, B₄10~13 pin meet B respectively₃15,13,11,9 pin, Q₁Grounded emitter, Q₁Colelctor electrode connection high frequency power pipe Q₂Emitter stage, Q₂Base stage through sound table resonator SAW₁Ground connection, resistance R₂One termination Q₂Base stage, the other end is divided into four tunnels：The first via is through electric capacity C₂Meet Q₂Emitter stage, the second tunnel connection SAW₁Transition joint, the 3rd tunnel is through inductance coil L₁12V DC power anodes are connect, the 4th tunnel is through inductance coil L₂Meet Q₂Colelctor electrode, Q₂Colelctor electrode is through electric capacity C₁Connect transmitting antenna ANT₁；Radio receiver is accordingly housed, radio receiver structure is as follows on numerical control cutting machine：Integrated circuit block B₆18 pin connection 5V positive sources, electric capacity C₂₁、C₈It is connected across on power supply positive and negative electrode, inductance coil L₃One termination B₆17 pin, the other end be divided into two tunnels：The first via meets B through electric capacity C9₆16 pin, the second tunnel is through resistance R₂₆, electric capacity C₁₇Connect power cathode, resistance R₂₅One termination B₆18 pin of (model RX 3310), another terminating resistor R₂₆With electric capacity C₁₇Junction, electric capacity C₁₀One end connection reception antenna ANT₂, the other end be divided into three tunnels：The first via is through electric capacity C₁₂Meet B ₆14 pin, the second tunnel is through electric capacity C₁₁Power cathode, the 3rd tunnel are connect through inductance coil L₄Connect power cathode, B ₆13,12,10 pin respectively through electric capacity C₁₃、C₁₄、C₁₅Connect power cathode, B₆11 foot meridian capacitor C₁₆Meet B₆3 pin, B₆1 foot meridian capacitor C₂₄Connecting triode Q₃Emitter stage, Q₃Colelctor electrode connects positive source, Q₃Base stage is through sound table resonator SAW₂Meet power cathode, resistance R₂₁It is connected across Q₃On colelctor electrode and base stage, electric capacity C₂₂It is connected across Q₃On emitter stage and base stage, SAW₂Intermediate contact connects power cathode,

B

₆2,4 pin respectively through electric capacity C₂₅、C₂₆Connect power cathode, B ₆5 foot meridian capacitor C₇, resistance R₂₂Connect Q₃Emitter stage, electric capacity C₂₃With resistance R₂₂Parallel connection, B₆7 pin connect power cathode, B₆9 pin through resistance R₂₄Connect power cathode, B₆8 pin connect coding all the way and receive chip B ₇14 pin of (model RT2272), another road are through resistance R₂₃Meet B₇18 pin and positive source, B₇15,16 pin between series resistor R₂₈, B₇17 pin meet triode Q₄Base stage, B₇1~6 pin connect switch decoder K respectively₂₅K~₃₀Signal end, switch decoder K₂₅~K₃₀Negative terminal and Q₄Emitter stage, B₇9 pin be serially connected on power cathode, switch decoder K₂₅~K₃₀Positive termination positive source, resistance R₂₇One termination positive source, the other end connect Q through LED₄Colelctor electrode, B₇7,8 and 10~13 pin connect SCM program chip B respectively₈7~2 pin of (model 89C2051), B₈1,8 pin tap power supply positive and negative electrode, B₈20~16 pin respectively through 24V DC power anodes line, IN1~IN4 signal wires connect numerical control device, B₈15~11 pin respectively through the rising of the first cutting torch, the rising of dropping signal line, the second cutting torch, dropping signal line, 24V DC power cathodes line connect relay automaton.

Claims

1. a kind of Digiplex of numerical control cutting machine, it is characterised in that box body (1) upper surface is matrix keyboard (2), has ignition key K into matrix arrangement₅, horizontal backspace key K₄, the first cutting torch rise key K₁₆, the first cutting torch drop key K₁₇, cutting oxygen key K₁, back spacer K₂, longitudinal direction enter key K₁₀, longitudinal backspace key K₉, accelerator key K₈, deceleration key K₇, continue key K₆, operation key K₁₅, laterally enter key K₁₄, the second cutting torch rise key K₁₃, the second cutting torch drop key K₁₂, Pause key K₁₁, advance key K₃, box body (1) is built with wireless launcher, and box body (1) top is equipped with the transmitting antenna ANT being connected with wireless launcher₁；Wireless launcher structure is as follows：1~5 pin difference concatenation operation amplifier chip B of matrix keyboard (2)₁10,6,5,4,3 pin, 6,9 pin of matrix keyboard (2) meet B respectively₁5,4 pin, B₁1,2 pin connection SCM program chip B₂2 pin, B₁8 pin connection B₂3 pin, 7,8,10 pin of matrix keyboard (2) connect resistance R respectively₁₇、R₁₈、R₁₉One end, R₁₇、R₁₈、R₁₉The other end and B₁9,14 pin be all serially connected on three-terminal voltage-stabilizing pipe Z 5V positive sources, three-terminal voltage-stabilizing pipe Z input connection 12V DC power anodes, another input end grounding；B₁7 pin and B₂10 pin ground connection, B₂4,5 pin between be serially connected with crystal oscillator frequency stabilizer W, W two ends respectively by electric capacity C₅、C₆Ground connection, Z 5V positive sources meet B all the way₂20 pin, another road is through electrochemical capacitor C₄Meet B₂1 pin, B₂1 pin through resistance R₄Ground connection, B₂18,17,16 pin difference connection matrix button (2) 7,8,10 pin, B₂15~12 pin connect the first light-coupled isolation chip B respectively₃2,4,6,8 pin, B₃1,3,5,7 pin respectively through resistance R₁₃~R₁₆Connect Z 5V positive sources, the second light-coupled isolation chip B₄1,3 pin respectively through resistance R₁₁、R₁₂Connect Z 5V positive sources, B₄2,4 pin difference connection matrix keyboard (2) 11,12 pin, matrix keyboard (2) 13 pin ground connection, B₄8,6 pin and B₃16,14,12,10 pin be serially connected on 12V DC power anodes, B₄7,5 pin and B₃15,13,11,9 pin on the one hand respectively through resistance R₅~R₁₀Ground connection, another aspect are respectively through diode D₁~D₆Meet coded excitation chip B₅18 pin, B₅1~6 pin on connect code switch K respectively₁₉~K₂₄Signal end, K₁₉~K₂₄Negative terminal and B₅9,14 pin concatenation after be grounded, K₁₉~K₂₄Anode be serially connected in B₅18 pin on, B₅18 foot meridian capacitor C₃Ground connection, B₅17 pin through resistance R₁Meet triode Q₁Base stage, B₅15,16 pin between be connected to resistance R₃, B5 7,8 pin meet B respectively₄7,5 pin, B₄10~13 pin meet B respectively₃15,13,11,9 pin, Q₁Grounded emitter, Q1 colelctor electrode connection high frequency power pipe Q₂Emitter stage, Q₂Base stage through sound table resonator SAW₁Ground connection, resistance R₂One termination Q₂Base stage, the other end is divided into four tunnels：The first via is through electric capacity C₂Meet Q₂Emitter stage, the second tunnel connection SAW₁Transition joint, the 3rd tunnel is through inductance coil L₁12V DC power anodes are connect, the 4th tunnel is through inductance coil L₂Meet Q₂Colelctor electrode, Q₂Colelctor electrode is through electric capacity C₁Connect transmitting antenna ANT₁；Radio receiver is accordingly housed, radio receiver structure is as follows on numerical control cutting machine：Integrated circuit block B₆18 pin connection 5V positive sources, electric capacity C₂₁、C₈It is connected across on power supply positive and negative electrode, inductance coil L₃One termination B₆17 pin, the other end be divided into two tunnels：The first via is through electric capacity C₉Meet B₆16 pin, the second tunnel is through resistance R₂₆, electric capacity C₁₇Connect power cathode, resistance R₂₅One termination B₆18 pin, another terminating resistor R₂₆With electric capacity C₁₇Junction, electric capacity C₁₀One end connection reception antenna ANT₂, the other end be divided into three tunnels：The first via is through electric capacity C₁₂Meet B₆14 pin, the second tunnel is through electric capacity C₁₁Power cathode, the 3rd tunnel are connect through inductance coil L₄Connect power cathode, B₆13,12,10 pin respectively through electric capacity C₁₃、C₁₄、C₁₅Connect power cathode, B₆11 foot meridian capacitor C₁₆Meet B₆3 pin, B₆1 foot meridian capacitor C₂₄Connecting triode Q₃Emitter stage, Q₃Colelctor electrode connects positive source, Q₃Base stage is through sound table resonator SAW₂Connect power cathode, resistance R₂₁It is connected across Q₃On colelctor electrode and base stage, electric capacity C₂₂It is connected across Q₃On emitter stage and base stage, SAW₂Intermediate contact connects power cathode, B₆2,4 pin respectively through electric capacity C₂₅、C₂₆Connect power cathode, B₆5 foot meridian capacitor C₇, resistance R₂₂Connect Q₃Emitter stage, electric capacity C₂₃With resistance R₂₂Parallel connection, B₆7 pin connect power cathode, B₆9 pin through resistance R₂₄Connect power cathode, B₆8 pin connect coding all the way and receive chip B₇14 pin, another road is through resistance R₂₃Meet B₇18 pin and positive source, B₇15,16 pin between series resistor R₂₈, B₇17 pin meet triode Q₄Base stage, B₇1~6 pin connect switch decoder K respectively₂₅~K₃₀Signal end, switch decoder K₂₅~K₃₀Negative terminal and Q₄Emitter stage, B₇9 pin be serially connected on power cathode, switch decoder K₂₅~K₃₀Positive termination positive source, resistance R₂₇One termination positive source, the other end connect Q through LED₄Colelctor electrode, B₇7,8 and 10~13 pin connect SCM program chip B respectively₈7~2 pin, B₈1,8 pin tap power supply positive and negative electrode, B₈20~16 pin respectively through 24V DC power anodes line, IN1~IN4 signal wires connect numerical control device, B₈15~11 pin respectively through the rising of the first cutting torch, the rising of dropping signal line, the second cutting torch, dropping signal line, 24V DC power cathodes line connect relay automaton.