CN220359052U - Power driving circuit of numerical control rotary table double motors, numerical control rotary table and numerical control system - Google Patents
Power driving circuit of numerical control rotary table double motors, numerical control rotary table and numerical control system Download PDFInfo
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- CN220359052U CN220359052U CN202321404430.0U CN202321404430U CN220359052U CN 220359052 U CN220359052 U CN 220359052U CN 202321404430 U CN202321404430 U CN 202321404430U CN 220359052 U CN220359052 U CN 220359052U
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Abstract
The utility model provides a power driving circuit of a numerical control turntable double motor, a numerical control turntable and a numerical control system, wherein the driving circuit comprises: the device comprises a first driving unit, a second driving unit, a microprocessor unit, a rectifying unit and an interface unit; the first end of the first driving unit is connected with the first motor, and the second end of the first driving unit is connected with the first end of the microprocessor unit; the first end of the second driving unit is connected with the second motor, and the second end of the second driving unit is connected with the second end of the microprocessor unit; the first end of the rectifying unit is connected with a power supply, the second end of the rectifying unit is connected with the third end of the microprocessor unit, and the first end of the interface unit is connected with the fourth end of the microprocessor unit. The embodiment of the application is beneficial to reducing the volume of the system; meanwhile, the control of the model is realized through the action of the microprocessor unit, so that the control precision is improved; can be widely applied to the technical field of numerical control systems.
Description
Technical Field
The utility model relates to the technical field of numerical control systems, in particular to a power driving circuit of a numerical control turntable double motor, a numerical control turntable and a numerical control system.
Background
The rotary workbench is an important part for bearing a workpiece by a precision machine tool such as a machining center machine tool, a numerical control boring and milling machine, and the like, provides rotary coordinates for the machine tool so as to finish precise angle positioning and complex curved surface machining, and has important influence on the machining quality and operation stability of the machine tool by the control precision. For a low-rotation-speed large-torque turntable, due to the consideration of cost and structure, a gear mechanism such as a speed reducer is often adopted to transmit the shaft output of a servo motor to the turntable, and the problems of closed loop oscillation, overshoot increase, long rebound period and the like caused by gaps in a transmission chain are caused, so that gap elimination treatment is needed. In general, the gap elimination process is performed by using a double motor. The double motor backlash eliminating is to adopt two sets of identical speed reducing gear structures to be respectively meshed with two opposite tooth surfaces of the main shaft big gear of the turntable, so as to provide opposite moment for the big gear of the turntable, and the turntable cannot swing freely in the transmission backlash, thereby realizing gapless transmission. Compared with a mechanical gap eliminating method, the double-motor gap eliminating method has the advantages of simple mechanical structure, balanced load stress, large output moment, high position precision, good stability, capability of eliminating all gaps in a transmission chain and the like.
In the related technology, for the driving and control of the double motors of the numerical control turntable, a scheme of adding two sets of servo drivers and one set of upper computer or control card is adopted, and the defects of large volume, complex electrical wiring, low production degree and the like exist; the numerical control system is also used for eliminating the clearance by configuring one shaft into a torque working mode and providing the reverse moment as the shaft of the other shaft, and the method has the problems of difficult setting, difficult realization of complex algorithm, poor control precision during reciprocating motion and the like.
In view of the above, there is a need to solve the problems of the related art.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the related art to a certain extent.
Therefore, an object of an embodiment of the present utility model is to provide a reliable power driving circuit for a dual motor of a numerical control turntable, and a numerical control system, including:
in one aspect, an embodiment of the present utility model provides a power driving circuit for a dual motor of a numerical control turntable, including: the device comprises a first driving unit, a second driving unit, a microprocessor unit, a rectifying unit and an interface unit; the first end of the first driving unit is connected with the first motor, and the second end of the first driving unit is connected with the first end of the microprocessor unit; the first end of the second driving unit is connected with a second motor, and the second end of the second driving unit is connected with the second end of the microprocessor unit; the first end of the rectifying unit is connected with a power supply, the second end of the rectifying unit is connected with the third end of the microprocessor unit, and the first end of the interface unit is connected with the fourth end of the microprocessor unit. According to the embodiment of the application, the gap elimination of the double motors is realized through the two driving units, the position feedback link of the motors is omitted, and the system volume is reduced; meanwhile, the control of the model is realized through the action of the microprocessor unit, and the control precision is improved.
In addition, the power driving circuit of the numerical control turntable double motors according to the embodiment of the utility model can also have the following additional technical characteristics:
further, in one embodiment of the present utility model, the first driving unit includes a first driving sub-circuit, a first current sampling sub-unit, and a first switching sub-unit;
the first end of the microprocessor unit is connected with the first end of the first switch subunit through the first driving sub-circuit, the second end of the first switch subunit is connected with the first motor, the third end of the first switch subunit is connected with the rectifying unit, and the second end of the first switch subunit is also connected with the microprocessor unit through the first current sampling subunit.
Further, in one embodiment of the present utility model, the driving circuit further includes a circular raster interface sub-circuit;
the circular grating is connected with the fifth end of the microprocessor unit through the circular grating interface sub-circuit.
Further, in one embodiment of the present utility model, the driving circuit further includes a voltage sampling sub-circuit;
the rectification unit is connected with the microprocessor unit through the voltage sampling sub-circuit.
Further, in one embodiment of the present utility model, the driving circuit further includes a switching value driving sub-circuit;
the sixth end of the microprocessor unit is connected with a first switch through the switching value driving sub-circuit, and the first switch comprises a band-type brake of the numerical control turntable.
Further, in an embodiment of the present utility model, the interface unit includes a nc bus interface, and the microprocessor unit is connected to a nc system through the nc bus interface.
Further, in one embodiment of the present utility model, the digital control bus interface includes a first chip, a transformer, and a socket, the microprocessor unit is connected to the transformer through the first chip, and the transformer is connected to the digital control system through the socket.
Further, in one embodiment of the present utility model, the circular grating interface sub-circuit includes a transceiver and an isolator; the circular grating is connected with the isolator through the transceiver, and the isolator is connected with the fifth end of the microprocessor unit.
In one aspect, an embodiment of the present application provides a numerically controlled turntable, including any one of the power driving circuits of the two motors of the numerically controlled turntable described above.
In one aspect, an embodiment of the present application provides a numerical control system including a numerical control turntable as described above.
The advantages and benefits of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
The embodiment of the application discloses a power driving circuit of numerical control revolving stage bi-motor includes: the device comprises a first driving unit, a second driving unit, a microprocessor unit, a rectifying unit and an interface unit; the first end of the first driving unit is connected with the first motor, and the second end of the first driving unit is connected with the first end of the microprocessor unit; the first end of the second driving unit is connected with a second motor, and the second end of the second driving unit is connected with the second end of the microprocessor unit; the first end of the rectifying unit is connected with a power supply, the second end of the rectifying unit is connected with the third end of the microprocessor unit, and the first end of the interface unit is connected with the fourth end of the microprocessor unit. According to the embodiment of the application, the gap elimination of the double motors is realized through the two driving units, the position feedback link of the motors is omitted, and the system volume is reduced; meanwhile, the control of the model is realized through the action of the microprocessor unit, and the control precision is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a power driving circuit of a numerical control turntable dual motor provided in the present application;
FIG. 2 is a schematic diagram of one embodiment of a switching value driving sub-circuit provided herein;
FIG. 3 is an electrical schematic diagram of one embodiment of a switching value driving sub-circuit provided herein;
FIG. 4 is a schematic diagram illustrating an embodiment of a digital control bus interface provided herein;
FIG. 5 is an electrical schematic diagram of one embodiment of a digital control bus interface provided herein;
FIG. 6 is a schematic diagram illustrating an embodiment of a circular grating interface sub-circuit provided herein;
fig. 7 is an electrical schematic diagram of one embodiment of a circular grating interface sub-circuit provided herein.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "length," "upper," "lower," "front," "rear," "left," "right," "top," "inner," "outer," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The rotary workbench is an important part for bearing a workpiece of a precision machine tool such as a machining center machine tool, a numerical control boring and milling machine tool and the like, and is used for providing rotary coordinates for the machine tool so as to finish precise angle positioning and complex curved surface machining, and the control precision of the rotary workbench has important influence on the machining quality and the running stability of the machine tool. For a low-rotation-speed large-torque turntable, due to the consideration of cost and structure, a gear mechanism such as a speed reducer is often adopted to transmit the shaft output of a servo motor to the turntable, and the problems of closed loop oscillation, overshoot increase, long rebound period and the like caused by gaps in a transmission chain are caused, so that gap elimination treatment is needed.
The double motor backlash eliminating adopts two sets of identical speed reducing gear structures to be respectively meshed with two opposite tooth surfaces of the main shaft big gear of the turntable, and provides opposite moment for the big gear of the turntable, so that the turntable cannot swing freely in the transmission backlash, thereby realizing gapless transmission. Compared with a mechanical gap eliminating method, the double-motor gap eliminating method has the advantages of simple mechanical structure, balanced load stress, large output moment, high position precision, good stability, capability of eliminating all gaps in a transmission chain and the like.
At present, for the driving and control of the double motors of the numerical control turntable, a scheme of adding two sets of servo drivers and one set of upper computer or control card is adopted, and the defects of large volume, complex electric wiring, low degree of productization and the like exist; the numerical control system is also used for eliminating the clearance by configuring one shaft into a torque working mode and providing the reverse moment as the shaft of the other shaft, and the method has the problems of difficult setting, difficult realization of complex algorithm, poor control precision during reciprocating motion and the like.
The patent with the application number of CN201420037582 provides a multi-motor anti-backlash driving control system with a DSP as a core, an upper computer sends control information to the DSP chip through a CAN bus, and a driving module controls the rotation of a motor and eliminates the backlash in the gear transmission process. Compared with the method, the utility model omits a position feedback link of the motor, simplifies a hardware structure and an algorithm structure, reduces the cost, can still realize the elimination of gaps and the linearization of a mathematical model, and can meet the system requirement on control precision; the utility model adopts the ETHERCAT bus interface, and has better compatibility with the current mainstream numerical control system; in addition, the utility model also comprises a switching value output interface which can be used for driving control of the band-type brake, has shorter response time and is more suitable for the functional requirements of the system. It can be understood that the application provides an integrated power driving circuit of a numerical control turntable double motor with an MCU as a core and a gap eliminating function, and aims to solve the problems.
Specifically, the present application proposes a power driving circuit of a dual motor of a numerically controlled turntable, and the power driving circuit of the dual motor of the numerically controlled turntable proposed in the present application is described in detail with reference to a schematic structural diagram of the power driving circuit of the dual motor of the numerically controlled turntable shown in fig. 1.
The utility model provides a power drive circuit of numerical control revolving stage bi-motor, this drive circuit includes: the device comprises a first driving unit, a second driving unit, a microprocessor unit, a rectifying unit and an interface unit;
the first end of the first driving unit is connected with the first motor, and the second end of the first driving unit is connected with the first end of the microprocessor unit; the first end of the second driving unit is connected with the second motor, and the second end of the second driving unit is connected with the second end of the microprocessor unit; the first end of the rectifying unit is connected with a power supply, the second end of the rectifying unit is connected with the third end of the microprocessor unit, and the first end of the interface unit is connected with the fourth end of the microprocessor unit.
In some possible implementations, referring to fig. 1, the driving circuit provided in the embodiments of the present application includes a microcontroller (i.e., a microprocessor unit), a communication interface circuit (i.e., the interface circuit includes a communication interface circuit, a numerical control system interface circuit), a numerical control system interface circuit, a rectifying circuit (i.e., a rectifying unit), a voltage sampling circuit (i.e., a voltage sampling sub-circuit), a circular grating interface circuit (i.e., a circular grating interface sub-circuit), a switching value driving circuit (i.e., a switching value driving sub-circuit), two sets of alternating current servo motor driving circuits (i.e., a first driving unit and a second driving unit), and so on. The alternating current servo motor driving circuit (namely a first driving unit) comprises a driving circuit (a first driving sub-circuit), a MOSFET module (a first switch sub-unit) and a current sampling circuit (a first current sampling sub-unit). The numerical control bus interface is connected with the microcontroller through the MAC peripheral; the communication interface is connected with the microcontroller through UART peripheral equipment; the rectifier circuit is connected with the MOSFET module, and the voltage sampling circuit is connected with an output bus of the rectifier and the microcontroller; the round grating interface circuit is connected with the SPI peripheral of the microcontroller; the light quantity driving circuit is connected to the GPIO peripheral of the microprocessor; in the two sets of alternating current servo motor driving circuits, the output end of the external of the microcontroller TIM is connected to a driving circuit of the MOSFET, and the driving circuit is connected to the MOSFET module; the current sampling circuit is connected with the output of the MOSFET module and the ADC peripheral of the microcontroller. Therefore, in the embodiment of the application, the ARM microcontroller is used as a core, and the current angle of the turntable is detected through the circular grating. Specifically, when the turntable is stationary, the microprocessor calculates the current supplied to the two motors, so that the motors provide a pair of moments with equal magnitude and opposite directions for the turntable; when the angle deviates from the set value, the microprocessor changes the current of the two motors to generate unbalanced moment, and drags the turntable to rotate to the given angle; when the turntable does not move, the processor releases the band-type brake to lock the turntable, and reduces or cancels the current of the motor so as to reduce the heat of the motor and save the electric energy; and the user uses the upper computer or the operation terminal to carry out system configuration and equipment debugging through a communication interface. The microprocessor unit in the embodiment of the application may adopt an ARM microcontroller, and the controller includes, but is not limited to, an STM32F446 chip, which is internally provided with an AD converter, an SPI interface, a UART interface, a digital input/output interface, a TIM control logic circuit capable of generating PWM waves, and the like. The communication interface in the embodiment of the application adopts an RS232 standard, and the object uses an upper computer or an operation terminal to carry out system configuration and equipment debugging through the communication interface. Therefore, the power driving circuit provided by the embodiment of the application simplifies the system structure, reduces the hardware cost, reduces the device volume, improves the degree of productization and has good working condition adaptability.
Optionally, the power driving circuit of the numerical control turntable double motors provided by the application, wherein the first driving unit comprises a first driving sub-circuit, a first current sampling sub-unit and a first switch sub-unit;
the first end of the microprocessor unit is connected with the first end of the first switch subunit through the first driving sub-circuit, the second end of the first switch subunit is connected with the first motor, the third end of the first switch subunit is connected with the rectifying unit, and the second end of the first switch subunit is also connected with the microprocessor unit through the first current sampling subunit.
In some possible implementations, the first switch subunit in the examples of the present application employs silicon carbide MOSFET modules, each of which is composed of 6 MOSFET tubes, and can drive an ac synchronous motor. Specifically, an alternating current power supply is changed into direct current by a rectifying circuit and then is sent to the input end of the MOSFET module, the microcontroller calculates corresponding control parameters according to the set position sent by the numerical control system and the current angle measured by the circular grating, PWM pulse is sent to the MOSFET driving circuit through a TIM interface, the grid electrode of the MOSFET is controlled, and the direct current sent to the MOSFET module by the rectifying circuit is changed into three-phase vector control voltage of the motor to form torque for dragging armature deflection of the motor; when the turntable is stationary, the microprocessor calculates the current supplied to the two motors, so that the motors provide a pair of moments with equal magnitude and opposite directions for the turntable; when the angle deviates from the set value, the microprocessor changes the current of the two motors to generate unbalanced moment, and drags the turntable to rotate to the given angle; when the turntable does not move, the processor releases the band-type brake to lock the turntable, and reduces or cancels the current of the motor so as to reduce the heating of the motor and save the electric energy.
It is understood that the second driving unit in the embodiment of the present application includes a second driving sub-circuit, a second current sampling sub-unit, and a second switching sub-unit;
the first end of the microprocessor unit is connected with the first end of the second switch subunit through the second driving sub-circuit, the second end of the second switch subunit is connected with the second motor, the third end of the second switch subunit is connected with the rectifying unit, and the second end of the second switch subunit is also connected with the microprocessor unit through the second current sampling subunit.
Optionally, the power driving circuit of the numerical control turntable double motors provided by the application further comprises a circular grating interface sub-circuit;
the circular grating is connected with the fifth end of the microprocessor unit through a circular grating interface sub-circuit.
Specifically, the round grating interface circuit adopts the BISS standard, the angle of the turntable is detected by the round grating and sent to the microprocessor, and the clearance control is realized by the microprocessor unit.
Optionally, the power driving circuit of the numerical control turntable double motors provided by the application further comprises a voltage sampling sub-circuit;
the rectifying unit is connected with the microprocessor unit through the voltage sampling sub-circuit.
Optionally, referring to fig. 2, the power driving circuit of the numerical control turntable double motors provided by the application further comprises a switching value driving sub-circuit;
the sixth end of the microprocessor unit is connected with a first switch through a switching value driving sub-circuit, and the first switch comprises a band-type brake of the numerical control turntable.
Specifically, referring to fig. 3, the switching value driving circuit adopts a photoelectric isolation technology, and outputs the photoelectric isolation technology to the band-type brake of the turntable. The switching value driving circuit adopts a photoelectric coupler TLP521 (U30) to isolate an internal circuit and an external circuit of the template, adopts a Darlington current amplifier ULN2803 (U38) to drive an external relay, and then drives a band-type brake coil by the relay; wherein the resistor R30 and the resistor R40 are current limiting resistors.
Optionally, referring to fig. 4, the interface unit includes a nc bus interface, and the microprocessor unit is connected to the nc system through the nc bus interface.
It can be understood that the numerical control bus interface in the embodiment of the present application may adopt the ethernet standard, and the numerical control system is connected to the microprocessor through the numerical control bus for controlling the online operation control of the turntable.
Optionally, referring to fig. 5, the power driving circuit of the numerical control turntable dual motor provided by the application includes a first chip, a transformer and a socket, the microprocessor unit is connected with the transformer through the first chip, and the transformer is connected with the numerical control system through the socket.
Specifically, the first chip of the numerical control bus interface may adopt an ethernet substation chip LAN9252 (U80), and the chip is internally provided with 2 PHY circuits and an MAC frame parsing circuit special for ethernet protocol, and may communicate with the microprocessor in an SPI manner; the network transformer (T60, T70) adopts H1102NL type and is used for converting the modulation signal on the network cable into a differential signal of the PHY circuit; the configuration chip (U81) adopts 24FC512 type EEPROM for setting the working mode and IO configuration of the substation chip LAN 9252; the operation mode of the substation chip LAN9252 is set by the resistor R83, the resistor R84, and the resistor R85 at the time of power-up or reset; the LED D80 is used for indicating the A port link, the diode D81 is used for indicating the B port link, and the diode D83 is used for indicating the operation; the bus interface is connected with the upper bit digital control system by adopting six types of network cables.
Optionally, referring to fig. 6, the power driving circuit of the numerical control turntable dual motor provided by the application, the circular grating interface sub-circuit comprises a transceiver and an isolator; the circular grating is connected with an isolator through a transceiver, and the isolator is connected with a fifth end of the microprocessor unit.
Specifically, referring to fig. 7, the round grating interface uses RS422 transceiver MAX490 (U51), and the chip has a differential receiver and a differential transmitter built therein, so that the differential level of the BISS bus can be converted into the TTL level; the digital isolator (U50) adopts ISO7731 for separating the inner and outer grounds of the template so as to improve the anti-interference capability of the system; resistors R50 and R51 are used to provide a certain high level to the input circuit when open, and resistors R52 and R53 are used for termination impedance matching of the twisted pair.
On the other hand, the embodiment of the application provides a numerical control rotary table, which comprises the power driving circuit of the numerical control rotary table double motors.
In another aspect, an embodiment of the present application provides a numerical control system including the numerical control turntable described above.
As can be seen from the above description, the present utility model provides a dual-motor power driving and controlling circuit for a numerically controlled rotary table of a machine tool, which is composed of a microcontroller, a communication interface circuit, a numerical control system interface circuit, a rectifying circuit, a voltage sampling circuit, a circular grating interface circuit, a switching value driving circuit, two sets of alternating current servo motor driving circuits, and the like. The alternating current servo motor driving circuit comprises a driving circuit, a MOSFET module and a current sampling circuit. The system is provided with an ETHERCAT numerical control bus interface, and the numerical control bus interface is connected with the microcontroller through an MAC peripheral; the system is provided with an RS232 communication interface which is connected with the microcontroller through UART peripheral equipment; the rectifier circuit is connected with the MOSFET module, and the voltage sampling circuit is connected with an output bus of the rectifier and the microcontroller; the round grating interface circuit is connected with the SPI peripheral of the microcontroller; the switch light quantity driving circuit is connected to the GPIO peripheral of the microprocessor, and outputs the switch light quantity driving circuit to drive the band-type brake of the turntable; in the two sets of identical alternating current servo motor driving circuits, a silicon carbide MOSFET module is adopted, the output end of the external of the microcontroller TIM is connected to the driving circuit of the MOSFET, the driving circuit is connected to the MOSFET module, and the MOSFET module is connected with an alternating current synchronous motor; the current sampling circuit is connected with the output of the MOSFET module and the ADC peripheral of the microcontroller. The utility model adopts ARM core microcontroller, which simplifies the system structure, reduces the device volume, reduces the hardware cost, improves the degree of production, has good working condition adaptability, and can meet the control requirement of the numerical control turntable.
In the description of the present specification, reference to the term "one embodiment," "another embodiment," or "certain embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a power drive circuit of numerical control revolving stage bi-motor which characterized in that, this drive circuit includes: the device comprises a first driving unit, a second driving unit, a microprocessor unit, a rectifying unit and an interface unit;
the first end of the first driving unit is connected with the first motor, and the second end of the first driving unit is connected with the first end of the microprocessor unit; the first end of the second driving unit is connected with a second motor, and the second end of the second driving unit is connected with the second end of the microprocessor unit; the first end of the rectifying unit is connected with a power supply, the second end of the rectifying unit is connected with the third end of the microprocessor unit, and the first end of the interface unit is connected with the fourth end of the microprocessor unit.
2. The power driving circuit of a double motor of a numerical control turntable according to claim 1, wherein the first driving unit comprises a first driving sub-circuit, a first current sampling sub-unit and a first switching sub-unit;
the first end of the microprocessor unit is connected with the first end of the first switch subunit through the first driving sub-circuit, the second end of the first switch subunit is connected with the first motor, the third end of the first switch subunit is connected with the rectifying unit, and the second end of the first switch subunit is also connected with the microprocessor unit through the first current sampling subunit.
3. The power driving circuit of a dual motor of a numerically controlled rotary table as set forth in claim 1, further comprising a circular raster interface sub-circuit;
the circular grating is connected with the fifth end of the microprocessor unit through the circular grating interface sub-circuit.
4. The power driving circuit of a double motor of a numerical control turntable according to claim 1, wherein the driving circuit further comprises a voltage sampling sub-circuit;
the rectification unit is connected with the microprocessor unit through the voltage sampling sub-circuit.
5. The power driving circuit of a double motor of a numerical control turntable according to claim 1, wherein the driving circuit further comprises a switching value driving sub-circuit;
the sixth end of the microprocessor unit is connected with a first switch through the switching value driving sub-circuit, and the first switch comprises a band-type brake of the numerical control turntable.
6. The power driving circuit of a double motor of a numerical control turntable according to claim 1, wherein the interface unit comprises a numerical control bus interface, and the microprocessor unit is connected with a numerical control system through the numerical control bus interface.
7. The power driving circuit of a double motor of a numerical control turntable according to claim 6, wherein the numerical control bus interface comprises a first chip, a transformer and a socket, the microprocessor unit is connected with the transformer through the first chip, and the transformer is connected with the numerical control system through the socket.
8. A digitally controlled turret bi-motor power drive circuit as claimed in claim 3 wherein said circular grating interface sub-circuit includes a transceiver and an isolator; the circular grating is connected with the isolator through the transceiver, and the isolator is connected with the fifth end of the microprocessor unit.
9. A numerically controlled turntable, characterized by comprising a power driving circuit of a double motor of the numerically controlled turntable as claimed in any one of claims 1 to 8.
10. A numerical control system comprising the numerical control turntable of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321404430.0U CN220359052U (en) | 2023-06-02 | 2023-06-02 | Power driving circuit of numerical control rotary table double motors, numerical control rotary table and numerical control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321404430.0U CN220359052U (en) | 2023-06-02 | 2023-06-02 | Power driving circuit of numerical control rotary table double motors, numerical control rotary table and numerical control system |
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| CN220359052U true CN220359052U (en) | 2024-01-16 |
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| CN202321404430.0U Active CN220359052U (en) | 2023-06-02 | 2023-06-02 | Power driving circuit of numerical control rotary table double motors, numerical control rotary table and numerical control system |
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