CN110142642A - A kind of electric control system for CNC milling machine safeguard protection - Google Patents
A kind of electric control system for CNC milling machine safeguard protection Download PDFInfo
- Publication number
- CN110142642A CN110142642A CN201910509381.9A CN201910509381A CN110142642A CN 110142642 A CN110142642 A CN 110142642A CN 201910509381 A CN201910509381 A CN 201910509381A CN 110142642 A CN110142642 A CN 110142642A
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- control system
- digital control
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- relay
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- 238000003801 milling Methods 0.000 title claims abstract description 11
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Numerical Control (AREA)
Abstract
The invention discloses a kind of electric control systems for CNC milling machine safeguard protection, including electrical relay, digital control system input and output I/O unit, digital control system, Z axis servo motor, digital control system cut-off button, digital control system power on buttons, Z axis servo motor band-type brake normally opened contact, Switching Power Supply in safety relay, emergency stop button, amplifier, digital control system.The present invention can effectively solve the problem that the power supply that digital control system can be cut off when existing Control System of Computerized Numerical Control Milling Machine system is not pressed there is emergency stop button, not have fool proof measure, the not high problem of the safety of equipment.
Description
Technical field
The present invention relates to a kind of electric control systems for CNC milling machine safeguard protection.
Background technique
Currently, in existing numerically-controlled machine tool, general single contact control digital control system and servo with emergency stop button
Driving unit is in emergency stop state, presses not over the band-type brake route and emergent stopping of emergency stop circuit control Z axis servo motor
Button can cut off the power supply of digital control system when not pressing, not have fool proof measure, and the safety of equipment is not high.
Summary of the invention
The object of the present invention is to provide a kind of electric control systems for CNC milling machine safeguard protection, solve the electricity in county domain
Gas control system can cut off the power supply of digital control system when not pressing there is emergency stop button, not have fool proof measure, equipment
The not high problem of safety.
The technical solution adopted by the present invention to solve the technical problems is: a kind of for the electrical of CNC milling machine safeguard protection
Electrical relay 9, digital control system in control system, including safety relay 1, emergency stop button SB3, amplifier 4, digital control system
Input and output I/O unit 3, digital control system 10, Z axis servo motor 6, digital control system cut-off button SB1, digital control system power on buttons
SB2,6 band-type brake normally opened contact KA15 of Z axis servo motor, Switching Power Supply GS1,
Emergency stop button SB3 is connected with the signal input part of safety relay 1, for controlling the work of safety relay 1
Make state；The signal output end Y32 of safety relay 1 is connected with numerical control system electrification relay 9, electrical relay in digital control system
9 signal output end is connected through digital control system input and output I/O unit 3 with digital control system 10；
Safety relay 1 is provided with three groups of normally opened contacts and one group of normally-closed contact, wherein between 13 pins and 14 pins, 23
Between pin and 24 pins, one group of normally opened contact is respectively arranged between 33 pins and 34 pins, between 41 pins and 42 pins
It is provided with one group of normally-closed contact；
13 pins, 23 pins of safety relay 1 are connected with the anode of Switching Power Supply GS1；The emergency stop circuit of amplifier 4
The both ends of CX4 are connected with 33 pins of safety relay 1,34 pins correspondence respectively；The power output end CZ2N of amplifier 4, it compiles
Code control output end JF3 is connected with Z axis servo motor 6；
The band-type brake power supply positive input of Z axis servo motor 6 is connected to through Z axis motor internal contracting brake relay normally open contact KA15
24 pins of safety relay 1；The power cathode output end of Z axis servo motor 6 is connected with the cathode of Switching Power Supply GS1；
One end of digital control system power on buttons SB2 and one end of numerical control system cut-off button SB1, safety relay 1 14
Pin is connected, and the other end of digital control system power on buttons SB2 is through the first coil KA18 of electrical relay 9 in digital control system and switch
The cathode of power supply GS1 is connected；The normally opened contact of first coil KA18 is connected in parallel on the both ends of digital control system power on buttons SB2；
The second coil KA18, the normally opened contact of first coil KA18, the Switching Power Supply GS1 of electrical relay 9 in digital control system
Series connection；
Digital control system 10, the normally opened contact of the second coil KA17 and Switching Power Supply GS1 series connection；
The A1 pin of safety relay 1 is connected by the normally opened contact of the second coil KA17 with the anode of Switching Power Supply GS1,
A2 pin is connected with the cathode of Switching Power Supply GS1；
Emergency stop button SB3 is normally closed, and digital control system cut-off button SB1 is normally opened, and digital control system power on buttons SB2 is normally closed.
Further, emergency stop button SB3 is provided with while two groups of normally-closed contacts of open and close, wherein one group of normally closed touching
The both ends of point are connected with the S21 foot of safety relay 1, S22 foot respectively；One end of another group of normally-closed contact and safety relay 1
S11 foot be connected, the other end is connected with the S12 foot of safety relay 1, S34 foot.
Further, each group of normally opened contact is both provided with concatenated two often in 1 three groups of normally opened contacts of safety relay
Contact is opened, every group of normally-closed contact is also equipped with concatenated two normally-closed contacts.
Beneficial effects of the present invention: it by the cooperation of emergency stop button and safety relay, controls digital control system and watches
The emergency stop of driving unit is taken, and promotes the latching of Z axis motor to prevent vertical axis from gliding prior to digital control system, and have to numerical control system
The fool proof of system power-off, improves equipment safety and personal safety.Meanwhile two groups of normally-closed contacts of emergency stop button, output
Two groups of signals, and be connected to the binary channels of safety relay, by binary channels input signal come co- controlling safety relay,
As long as wherein having short circuit between the contact of any one group of contact signal access failure or double-channel signal, safety relay cannot be just
Often work, digital control system and amplifier are at emergency stop state, and Z axis servo motor is lockked because of brake-contracting cut-off；Above-mentioned is double
Channel refers to second between the first exit passageway, S11 pin and S12 pin between safety relay S21 pin and S22 pin
The two channels of exit passageway.Each road output of safety relay is made of double-contact, any one group of contact in double-contact
It breaks down, also can guarantee emergency stop state at digital control system, increase one of security insurance.
Below with reference to drawings and examples, the present invention is described in detail.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure.
Fig. 2 is the schematic diagram of electrical relay in digital control system.
Fig. 3 is the schematic diagram of Switching Power Supply.
Specific embodiment
Embodiment, a kind of electric control system for CNC milling machine safeguard protection as shown in Figure 1 to Figure 3, including safety
Relay 1, emergency stop button SB3, amplifier 4, electrical relay 9 in digital control system, digital control system input and output I/O unit 3,
Digital control system 10, Z axis servo motor 6, digital control system cut-off button SB1, digital control system power on buttons SB2, Z axis servo motor 6
Band-type brake normally opened contact KA15, Switching Power Supply GS1,
Emergency stop button SB3 is connected with the signal input part of safety relay 1, for controlling the work of safety relay 1
Make state；The signal output end Y32 of safety relay 1 is connected with numerical control system electrification relay 9, electrical relay in digital control system
9 signal output end is connected through digital control system input and output I/O unit 3 with digital control system 10；
Safety relay 1 is provided with three groups of normally opened contacts and one group of normally-closed contact, wherein between 13 pins and 14 pins, 23
Between pin and 24 pins, one group of normally opened contact is respectively arranged between 33 pins and 34 pins, between 41 pins and 42 pins
It is provided with one group of normally-closed contact；
13 pins, 23 pins of safety relay 1 are connected with the anode of Switching Power Supply GS1；The emergency stop circuit of amplifier 4
The both ends of CX4 are connected with 33 pins of safety relay 1,34 pins correspondence respectively；The power output end CZ2N of amplifier 4, it compiles
Code control output end JF3 is connected with Z axis servo motor 6；
The band-type brake power supply positive input of Z axis servo motor 6 is connected to through Z axis motor internal contracting brake relay normally open contact KA15
24 pins of safety relay 1；The power cathode output end of Z axis servo motor 6 is connected with the cathode of Switching Power Supply GS1；Z axis electricity
Machine band-type brake relay normally open contact KA15 is set-up mode common in digital control system, is controlled by digital control system, because not being
Main innovation point of the invention, belongs to existing technology, therefore do not illustrate herein.It is primarily used to control Z axis servo
The band-type brake of motor.
One end of digital control system power on buttons SB2 and one end of numerical control system cut-off button SB1, safety relay 1 14
Pin is connected, and the other end of digital control system power on buttons SB2 is through the first coil KA18 of electrical relay 9 in digital control system and switch
The cathode of power supply GS1 is connected；The normally opened contact of first coil KA18 is connected in parallel on the both ends of digital control system power on buttons SB2；
The second coil KA18, the normally opened contact of first coil KA18, the Switching Power Supply GS1 of electrical relay 9 in digital control system
Series connection；
Digital control system 10, the normally opened contact of the second coil KA17 and Switching Power Supply GS1 series connection；
The A1 pin of safety relay 1 is connected by the normally opened contact of the second coil KA17 with the anode of Switching Power Supply GS1,
A2 pin is connected with the cathode of Switching Power Supply GS1；
Emergency stop button SB3 is normally closed, and digital control system cut-off button SB1 is normally opened, and digital control system power on buttons SB2 is normally closed.
Emergency stop button SB3 is provided with while two groups of normally-closed contacts of open and close, wherein the both ends of one group of normally-closed contact point
It is not connected with the S21 foot of safety relay 1, S22 foot, constitutes the first exit passageway；One end of another group of normally-closed contact and safety
The S11 foot of relay 1 is connected, and the other end is connected with the S12 foot of safety relay 1, the second exit passageway of composition, while and also and
S34 foot is connected, for controlling reset signal, corresponding Reset indicator light.
Each group of normally opened contact is both provided with concatenated two normally opened contacts in 1 three groups of normally opened contacts of safety relay, often
Group normally-closed contact is also equipped with concatenated two normally-closed contacts.
The power input of electrical relay 9 is connected with Switching Power Supply GS1 in digital control system, and the digital control system powers on relay
9 specific structure of device is referring to attached drawing.
The pin of the Y32 of safety relay 1 monitors its working condition for digital control system 10, when by the normal work of spring relay
When making, high level signal is exported.The model PNOZ S4 of safety relay 1, is provided with one group of indicator light, respectively
With Y32 pin to the OUT indicator light and the corresponding reset signal indicator light of S34 pin for being applied to display output state signal
Reset indicator light and the corresponding In1 indicator light of the first exit passageway and the corresponding In2 indicator light of the second exit passageway, are used for
Show the Power indicator light of its power supply state.Switching Power Supply GS1 is DC24V power supply.
Working principle:
1, when pressing digital control system power on buttons SB2, make numerical control system by the way that the normally opened contact of first coil KA18 is self-locking
On system electrical relay 9 first coil KA18 be attracted because the normally opened contact of first coil KA18 obtain it is electric it is normally closed after, the second coil
KA17 coil must be attracted, and the second coil KA17 normally opened contact closure being connected at this time with digital control system 10 passes through Switching Power Supply GS1
It is powered on to digital control system 10, while the A1 pin and A2 pin offer DC24V power supply of safety relay 1 being provided, when Power is indicated
Illustrate that power supply is normal when lamp is always on.
2, emergency stop button SB3 is pressed, is disconnected when the first exit passageway disconnects S11 and S12, In1 lamp goes out, while second
Exit passageway also disconnects S21 and S22 and disconnects, and for In2 when indicator light off, safety relay 1 enters urgent-stop alarm state, and Reset refers to
Show that lamp goes out；Indicator light off without high level output OUT by Y32, and digital control system 10 enters urgent-stop alarm state；The 13- of safety relay
14 normally opened contacts disconnect；23-24 normally opened contact disconnects, 6 band-type brake of Z axis servo motor, machine Z-axis cisco unity malfunction；33-34 is normal
Contact disconnection is opened, the emergency stop circuit CX4 of amplifier 4, which is disconnected, enters urgent-stop alarm state.
3, emergency stop button SB3 is unclamped, when the first exit passageway S11 and S12 is closed, the indicator light is always on and second by In1
Exit passageway S21 and S22 are closed, In2 the indicator light is always on be all closed after, safety relay 1 works normally: safety relay 1
Y32 pin output high level OUT lamp is always on to digital control system input and output I/O unit 3, digital control system 10 release urgent-stop alarm into
Enter reset state；The 13-14 normally opened contact of safety relay 1 is closed, and presses digital control system cut-off button SB1, numerical control system at this time
On system electrical relay 9 and digital control system 10 can not power loss, maloperation can be prevented in this way；The 23-24 of safety relay 1 is normally opened
Contact closure, for Z axis servo motor 6 band-type brake release be ready, when digital control system is not alarmed, digital control system power on after
The 6 band-type brake normally opened contact KA15 of Z axis servo motor of electric appliance 9 is closed output, and machine Z-axis can work normally；33-34 normally opened contact
Closure, makes the CX4 emergency stop circuit closed of amplifier 4, and amplifier 4 releases emergency stop and enters preparation state.
The present invention is exemplarily described in conjunction with attached drawing above.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out；Or not
It is improved, above-mentioned conception and technical scheme of the invention are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (3)
1. a kind of electric control system for CNC milling machine safeguard protection, it is characterised in that: including safety relay (1), tightly
Anxious stop button (SB3), amplifier (4), electrical relay (9), digital control system input and output I/O unit (3), number in digital control system
Control system (10), Z axis servo motor (6), digital control system cut-off button (SB1), digital control system power on buttons (SB2), Z axis servo
Motor (6) band-type brake normally opened contact (KA15), Switching Power Supply (GS1),
Emergency stop button (SB3) is connected with the signal input part of safety relay (1), for controlling safety relay (1)
Working condition；The signal output end (Y32) of safety relay (1) is connected with numerical control system electrification relay (9), in digital control system
The signal output end of electrical relay (9) is connected through digital control system input and output I/O unit (3) with digital control system (10)；
Safety relay (1) is provided with three groups of normally opened contacts and one group of normally-closed contact, wherein between 13 pins and 14 pins, 23 drawing
Between foot and 24 pins, it is respectively arranged with one group of normally opened contact between 33 pins and 34 pins, is set between 41 pins and 42 pins
It is equipped with one group of normally-closed contact；
13 pins, 23 pins of safety relay (1) are connected with the anode of Switching Power Supply (GS1)；The emergency stop circuit of amplifier (4)
(CX4) both ends are connected with 33 pins of safety relay (1), 34 pins correspondence respectively；The power output end of amplifier (4)
(CZ2N), coding-control output end (JF3) is connected with Z axis servo motor (6)；
The band-type brake power supply positive input of Z axis servo motor (6) is connected to through Z axis motor internal contracting brake relay normally open contact (KA15)
24 pins of safety relay (1)；The power cathode output end of Z axis servo motor (6) and the cathode phase of Switching Power Supply (GS1)
Even；
One end of digital control system power on buttons (SB2) and one end of numerical control system cut-off button (SB1), safety relay (1)
14 pins are connected, first coil of the other end through electrical relay in digital control system (9) of digital control system power on buttons (SB2)
(KA18) it is connected with the cathode of Switching Power Supply (GS1)；The normally opened contact of first coil (KA18) be connected in parallel on digital control system power on by
The both ends of button (SB2)；
The second coil (KA18) of electrical relay (9), the normally opened contact of first coil (KA18), Switching Power Supply in digital control system
(GS1) it connects；
Digital control system (10), the normally opened contact of the second coil (KA17) and Switching Power Supply (GS1) series connection；
The A1 pin of safety relay (1) passes through the normally opened contact of the second coil (KA17) and the positive phase of Switching Power Supply (GS1)
Even, A2 pin is connected with the cathode of Switching Power Supply (GS1)；
Emergency stop button (SB3) is normally closed, and digital control system cut-off button (SB1) is normally opened, and digital control system power on buttons (SB2) is normal
It closes.
2. the electric control system according to claim 1 for CNC milling machine safeguard protection, it is characterised in that: promptly stop
Only button (SB3) is provided with while two groups of normally-closed contacts of open and close, wherein the both ends of one group of normally-closed contact are respectively and safety relay
S21 foot, the S22 foot of device (1) are connected；One end of another group of normally-closed contact is connected with the S11 foot of safety relay (1), the other end
It is connected with the S12 foot of safety relay (1), S34 foot.
3. the electric control system according to claim 1 or 2 for CNC milling machine safeguard protection, it is characterised in that: peace
Each group of normally opened contact is both provided with concatenated two normally opened contacts, every group of normally closed touching in (1) three group of normally opened contact of all relay
Point is also equipped with concatenated two normally-closed contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910509381.9A CN110142642B (en) | 2019-06-13 | 2019-06-13 | Electrical control system for numerical control milling machine safety protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910509381.9A CN110142642B (en) | 2019-06-13 | 2019-06-13 | Electrical control system for numerical control milling machine safety protection |
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| Publication Number | Publication Date |
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| CN110142642A true CN110142642A (en) | 2019-08-20 |
| CN110142642B CN110142642B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910509381.9A Active CN110142642B (en) | 2019-06-13 | 2019-06-13 | Electrical control system for numerical control milling machine safety protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463749A (en) * | 2020-03-17 | 2020-07-28 | 安徽新诺精工股份有限公司 | Electrical protection circuit for cutting off servo power |
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| RU2510555C1 (en) * | 2012-10-05 | 2014-03-27 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | Machine protective device |
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| CN208239873U (en) * | 2018-06-07 | 2018-12-14 | 合肥正帆电子材料有限公司 | A kind of safety return circuit system |
| CN210060578U (en) * | 2019-06-13 | 2020-02-14 | 安徽新诺精工股份有限公司 | Electrical control system for safety protection of numerical control milling machine |
-
2019
- 2019-06-13 CN CN201910509381.9A patent/CN110142642B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05143132A (en) * | 1991-11-19 | 1993-06-11 | Amada Co Ltd | Safety device for nc machine tool |
| CN1623744A (en) * | 2003-12-03 | 2005-06-08 | 发那科株式会社 | Emergency stop circuit |
| JP2008046710A (en) * | 2006-08-11 | 2008-02-28 | Jtekt Corp | Circuit board for input/output control part |
| CN201259624Y (en) * | 2008-03-31 | 2009-06-17 | 德阳市同佳环保科技有限责任公司 | PLC controlled ray chamber safety interlocking system |
| RU2510555C1 (en) * | 2012-10-05 | 2014-03-27 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | Machine protective device |
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| WO2018155423A1 (en) * | 2017-02-21 | 2018-08-30 | オムロン株式会社 | Motor control device and motor control system |
| CN208239873U (en) * | 2018-06-07 | 2018-12-14 | 合肥正帆电子材料有限公司 | A kind of safety return circuit system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463749A (en) * | 2020-03-17 | 2020-07-28 | 安徽新诺精工股份有限公司 | Electrical protection circuit for cutting off servo power |
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| CN110142642B (en) | 2024-02-27 |
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