CN110814448B - Centralized rectification and voltage transformation distributed chopping pulse power supply - Google Patents
Centralized rectification and voltage transformation distributed chopping pulse power supply Download PDFInfo
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- CN110814448B CN110814448B CN201911163437.6A CN201911163437A CN110814448B CN 110814448 B CN110814448 B CN 110814448B CN 201911163437 A CN201911163437 A CN 201911163437A CN 110814448 B CN110814448 B CN 110814448B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
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Abstract
The invention discloses a centralized rectification voltage transformation distributed chopping pulse power supply, which is characterized by comprising the following components: the system comprises a voltage regulating station and a plurality of station choppers, wherein the voltage regulating station is electrically connected with each station chopper through a two-phase power line or a copper plate respectively, and is in communication connection with each station chopper through a signal line respectively; the voltage regulating station provides low-voltage direct current for the multiple station choppers, and the power of the multiple station choppers which are simultaneously started is lower than that of the voltage regulating station. The invention can be used for multi-station electric spark machining, electrolytic machining, electrochemical deburring machining and the like, and can provide pulse electricity with different parameters for each station. One voltage regulating station can provide low-voltage direct current for a plurality of station choppers, a voltage regulating circuit with a large size is placed in the voltage regulating station, the station choppers are small in size and are responsible for converting the direct current into pulse electricity to be output to a machine tool, station installation is facilitated, and workshop space saving is facilitated.
Description
Technical Field
The invention belongs to the field of electromachining, and particularly relates to a centralized rectification voltage transformation distributed chopping pulse power supply.
Background
The special processing refers to a processing method which does not belong to the category of the traditional processing technology, and is different from the traditional processing method of directly cutting off redundant materials by using a cutter, a grinding tool and the like by utilizing mechanical energy. The special processing is a new process developed in recent decades, is an important supplement and development for the traditional processing technique, and is still continuously researched, developed and improved at present. The processing of the workpiece is carried out by directly utilizing electric energy, heat energy, sound energy, light energy, chemical energy and electrochemical energy, and sometimes combining mechanical energy. In special machining, electric spark machining and electrolytic machining which mainly adopt electric energy are widely applied and are generally called as electric machining.
Electric spark machining is a new process for machining by utilizing electric energy and heat energy, and is commonly called as electric discharge machining. The difference between the electric discharge machining and the general cutting machining is that the metal material is gradually removed by the local and instantaneous high temperature generated by the pulse spark discharge generated between the tool and the workpiece, without the tool and the workpiece being in contact with each other. Since visible sparks are generated during the discharge process, the electric discharge machining is called. When electric spark machining is carried out, the tool electrode and the workpiece are respectively connected with two poles of a pulse power supply and immersed in working liquid, or the working liquid is filled into a discharge gap. The feeding of the tool electrode to the workpiece is controlled by the automatic gap control system, and when the gap between the two electrodes reaches a certain distance, the pulse voltage applied to the two electrodes breaks down the working liquid to generate spark discharge.
Electrolytic machining is a special machining method for machining and shaping workpieces by utilizing the principle that metal generates electrochemical anodic dissolution in electrolyte. During machining, the workpiece is connected with the positive pole of a direct current power supply, the tool is connected with the negative pole, and a small gap is kept between the two poles. The electrolyte flows through the interelectrode gap to form a conductive path between the two electrodes, and generates a current under a power supply voltage, thereby forming electrochemical anodic dissolution. With the continuous feeding of the tool relative to the workpiece, the metal of the workpiece is continuously electrolyzed, the electrolysis product is continuously washed away by the electrolyte, finally, the gaps at all positions between the two electrodes tend to be consistent, and the surface of the workpiece is formed into a shape basically similar to the working surface of the tool. The electrolytic machining has obvious advantages for machining difficult-to-machine materials, complex-shaped or thin-walled parts. Electrolytic machining has been widely used, for example, in the machining of rifling of gun barrels, blades, integral impellers, molds, special-shaped holes and special-shaped parts, chamfering, deburring and the like. And in the processing of many parts, the electrolytic machining process has occupied an important position or even an irreplaceable position.
A pulse power supply is a device that provides machining energy for electromachining, and generally has a pulse on time (pulse width), a pulse off time (pulse interval) or frequency, a duty cycle, and parameters such as voltage, current, and the like. Every electric machine tool all need be equipped with a pulse power supply at present, because pulse power supply general volume is great, so need occupy a large amount of spaces.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a concentrated rectification voltage transformation distributed chopping pulse power supply which provides pulse electricity with different parameters for multiple stations so as to meet the use requirements of multiple stations of electric spark or electrolytic machining.
The technical scheme adopted by the invention is as follows:
a centralized rectification and transformation distributed chopping pulse power supply is characterized by comprising: the system comprises a voltage regulating station and a plurality of station choppers, wherein the voltage regulating station is electrically connected with each station chopper through a two-phase power line or a copper plate respectively, and is in communication connection with each station chopper through a signal line respectively; the voltage regulating station provides low-voltage direct current for the multiple station choppers, and the power of the multiple station choppers which are simultaneously started is lower than that of the voltage regulating station.
Further, concentrate rectification vary voltage distribution formula chopping pulse power supply, its characterized in that, the station chopper includes: the device comprises a button station, a touch screen, a chopping board, a controller, an acquisition circuit, a power supply input interface, a PWM voltage regulator, an energy storage module, a chopping module, a current divider, a Hall sensor and a power supply output interface;
the button station and the touch screen are respectively connected with a controller through data lines, the controller is connected with a PWM voltage regulator, the controller is connected with a chopping board, the controller is connected with an acquisition circuit, the acquisition circuit is connected with a shunt and a Hall sensor, a power input interface is connected with the PWM voltage regulator, the PWM voltage regulator is connected with an energy accumulator, the energy accumulator is connected with a chopper, the chopper is connected with the shunt, the shunt is connected with the Hall sensor, and the Hall sensor is connected with a power output interface.
Further, concentrate rectification vary voltage distributing type chopping pulse power supply, its characterized in that, the voltage regulation station includes: the device comprises a three-phase five-wire input, a button station, a controller, a touch screen, an acquisition circuit, a reactor, a transformer, a rectification voltage regulation circuit, a shunt, a Hall sensor and an output interface;
the three-phase voltage-regulating circuit comprises a three-phase five-wire input, a three-phase reactor, a three-phase voltage-regulating circuit, a current divider, a Hall sensor and an output interface, wherein U, V, W three phases in the three-phase five-wire input are connected with the reactor, N and PE two phases in the three-phase five-wire input are connected with the transformer, three phases of the output of the reactor are connected with the transformer, the transformer is connected with a rectification voltage-regulating circuit, the rectification voltage-; the shunt is connected with the acquisition circuit, the Hall sensor is connected with the acquisition circuit, and the acquisition circuit is connected with the control circuit;
the button station and the touch screen are connected with a controller, and the controller is connected with the rectification voltage regulation circuit;
the station chopper is connected with an output interface of the voltage regulating station through a power supply input interface.
The invention has the advantages that:
the invention can be used for multi-station electric spark machining, electrolytic machining, electrochemical deburring machining and the like, and can provide pulse electricity with different parameters for each station; one voltage regulating station can provide low-voltage direct current for a plurality of station choppers, a voltage regulating circuit with a large volume is placed in the voltage regulating station, and the station choppers have small volumes and are responsible for converting the direct current into pulse electricity to be output to a machine tool, so that the station installation is convenient, and the workshop space is saved;
the invention has novel structure, reduces the space required by station installation, can ensure the output stability of each station and has stronger practicability in multi-station processing.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the power supply of the present invention;
FIG. 2 is a schematic diagram of the structure of the station chopper provided by the invention;
fig. 3 is a schematic structural diagram of a voltage regulating station provided by the invention.
Reference numbers in the figures: the system comprises a station chopper 1, a voltage regulating station 2, a two-phase power line 3 and a signal line 4;
the device comprises a button station 1.1, a touch screen 1.2, a chopper plate 1.3, a controller 1.4, an acquisition circuit 1.5, a power input interface 1.6, a PWM voltage regulator 1.7, an energy storage module 1.8, a chopper module 1.9, a current divider 1.10, a Hall sensor 1.11 and a power output interface 1.12;
the three-phase five-wire input device comprises a three-phase five-wire input 2.1, a button station 2.2, a controller 2.3, a touch screen 2.4, an acquisition circuit 2.5, a reactor 2.6, a transformer 2.7, a rectification voltage-regulating circuit 2.8, a shunt 2.9, a Hall sensor 2.10 and an output interface 2.11.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1.
A novel centralized rectification and transformation distributed chopping pulse power supply comprises: the system comprises a voltage regulating station 2 and a plurality of station choppers 1, wherein the voltage regulating station 2 is electrically connected with each station chopper 1 through a two-phase power line 3, and the voltage regulating station 2 is in communication connection with each station chopper 1 through a signal line 4; the voltage regulating station 2 supplies low-voltage direct current to the multiple-station choppers 1, and the power of the multiple-station choppers 1 which are simultaneously started is lower than that of the voltage regulating station 2.
The station chopper 1 includes: the device comprises a button station 1.1, a touch screen 1.2, a chopper plate 1.3, a controller 1.4, an acquisition circuit 1.5, a power input interface 1.6, a PWM voltage regulator 1.7, an energy storage module 1.8, a chopper module 1.9, a current divider 1.10, a Hall sensor 1.11 and a power output interface 1.12.
The button station 1.1 and the touch screen 1.2 are connected with the controller 1.4 through data lines, and the button station 1.1 is used for inputting pulse electrical parameters required by stations such as pulse width, pulse interval, voltage, current and the like and displaying the pulse electrical parameters on the touch screen 1.2; the controller 1.4 is connected with the PWM voltage regulator 1.7, and the controller 1.4 outputs a PWM signal to the PWM1.7 through a data line so as to regulate the voltage value; the controller 1.4 is connected with the chopping board 1.3, communicates with the chopping board 1.3 through a data line, and outputs parameters such as pulse width, pulse interval and the like to the chopping board 1.3; the controller 1.4 is connected with the acquisition circuit 1.5 and is used for acquiring the working voltage and current information of the power supply; the acquisition circuit 1.5 is connected with the controller 1.4, the shunt 1.10 and the Hall sensor 1.12, is used for A/D conversion, and converts voltage and current analog signals into digital signals for the controller 1.4 to read; the power input interface 1.6 is connected with the output interface 2.11 of the voltage regulating station 2; the power input interface 1.6 is connected with the PWM voltage regulator 1.7, and the PWM voltage regulator 1.7 is connected with the energy accumulator 1.8; the energy accumulator 1.8 is connected with the chopper 1.9; the chopper 1.9 is connected with the shunt 1.10; the shunt 1.10 is connected with the Hall sensor 1.11; the Hall sensor is connected with a power output interface 1.12; the energy accumulator 1.8 is used for accumulating electric energy to maintain the stability of high-power output; the chopper 1.9 is used for converting direct current into pulse electricity according to a chopping signal sent by the chopper plate 1.3; the current divider 1.10 is used for collecting circuit voltage signals; the hall sensor 1.11 is used for collecting current signals of the circuit.
The voltage regulation station 2 includes: the three-phase five-wire input device comprises a three-phase five-wire input 2.1, a button station 2.2, a controller 2.3, a touch screen 2.4, an acquisition circuit 2.5, a reactor 2.6, a transformer 2.7, a rectification voltage-regulating circuit 2.8, a shunt 2.9, a Hall sensor 2.10 and an output interface 2.11.
The U, V, W three phases in the three-phase five-wire input 2.1 are connected with the reactor 2.6, the N and PE two phases in the three-phase five-wire input 2.1 are connected with the transformer 2.7, and the 3-phase output of the reactor 2.6 is connected with the transformer 2.7; the reactor 2.6 is used for isolating high-frequency signals of the circuit and resisting interference; the transformer 2.7 is used for transforming 380V high-voltage alternating current into dozens of V low-voltage alternating current; the transformer 2.7 is connected with the rectification voltage regulation circuit 2.8; the rectification voltage regulating circuit 2.8 is used for converting low-voltage alternating current into low-voltage direct current; the rectification voltage regulating circuit 2.8 is connected with the shunt 2.9; the shunt 2.9 is connected with the Hall sensor 2.10; the Hall sensor 2.10 is connected with the output interface 2.11; the shunt 2.9 is used for collecting voltage signals; the Hall sensor 2.10 is used for collecting circuit signals; the shunt 2.9 is connected with the acquisition circuit 2.5; the Hall sensor 2.10 is connected with the acquisition circuit 2.5; the acquisition circuit 2.5 is used for A/D conversion, and converts the voltage signal and the current signal into digital signals for the controller 2.3 to read; the acquisition circuit 2.5 is connected with the control device; the button station 2.2 and the touch screen 2.4 are connected with the controller 2.3 and used for inputting voltage regulating parameters; the controller 2.3 is connected with the rectification voltage-regulating circuit 2.8 and sends a control signal to the rectification voltage-regulating circuit.
One voltage regulating station 2 can provide low-voltage direct current for a plurality of station choppers 1; the total power of the station chopper 1 is lower than that of the voltage regulating station 2, or the power of the station chopper 1 which is simultaneously started is lower than that of the voltage regulating station 2.
The voltage regulating circuit with larger volume is placed in the voltage regulating station 2, and the station chopper 1 has smaller volume, so that the installation of stations is convenient, and the space of a factory building is saved; the station chopper 1 and the voltage regulating station 2 are digitally controlled.
In the invention, the voltage regulating station 2 is independently arranged at a position with large space and good air circulation, one station chopper 1 can be arranged at each station or machine tool, the voltage regulating station 2 is connected with the station chopper 1 through an erected two-phase power supply wire or a copper plate 3, and meanwhile, a signal wire 4 is erected to realize the communication between the voltage regulating station 2 and the station chopper 1. When the voltage regulating device is used, the voltage value of the voltage regulating station 2 is firstly regulated, and then the voltage value of the station chopper 1 is regulated, so that the required voltage is obtained. Parameters such as pulse width, pulse interval, current and the like of the station chopper 1 are adjusted, so that required pulse electricity is obtained, and the pulse electricity is provided for the electrolytic machining machine tool or the electric spark machining machine tool of the station.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. A centralized rectification and transformation distributed chopping pulse power supply is characterized by comprising: the device comprises a voltage regulating station (2) and a plurality of station choppers (1), wherein the voltage regulating station (2) is electrically connected with each station chopper (1) through a two-phase power line or a copper plate (3), and the voltage regulating station (2) is in communication connection with each station chopper (1) through a signal line (4); the voltage regulating station (2) provides low-voltage direct current for a plurality of station choppers (1), and the power of the plurality of station choppers (1) which are simultaneously started is lower than that of the voltage regulating station (2);
the station chopper (1) comprises: the device comprises a button station (1.1), a touch screen (1.2), a chopper plate (1.3), a controller (1.4), an acquisition circuit (1.5), a power input interface (1.6), a PWM voltage regulator (1.7), an energy storage module (1.8), a chopper module (1.9), a current divider (1.10), a Hall sensor (1.11) and a power output interface (1.12);
the button station (1.1) and the touch screen (1.2) are connected with a controller (1.4) through data lines respectively, the controller (1.4) is connected with a PWM voltage regulator (1.7), the controller (1.4) is connected with a chopper plate (1.3), the controller (1.4) is connected with an acquisition circuit (1.5), the acquisition circuit (1.5) is connected with a current divider (1.10) and a Hall sensor (1.12), the power input interface (1.6) is connected with the PWM voltage regulator (1.7), the PWM voltage regulator (1.7) is connected with an energy accumulator (1.8), the energy accumulator (1.8) is connected with a chopper (1.9), the chopper (1.9) is connected with the current divider (1.10), the current divider (1.10) is connected with the Hall sensor (1.11), and the Hall sensor is connected with a power output interface (1.12).
2. The concentrated rectifying, transforming, distributed chopped pulse power supply according to claim 1, characterized in that said regulating station (2) comprises: the device comprises a three-phase five-wire input (2.1), a button station (2.2), a controller (2.3), a touch screen (2.4), an acquisition circuit (2.5), a reactor (2.6), a transformer (2.7), a rectification voltage regulating circuit (2.8), a shunt (2.9), a Hall sensor (2.10) and an output interface (2.11);
the three-phase voltage regulator is characterized in that U, V, W three phases in the three-phase five-wire input (2.1) are connected with a reactor (2.6), N and PE two phases in the three-phase five-wire input (2.1) are connected with a transformer (2.7), the three output phases of the reactor (2.6) are connected with the transformer (2.7), the transformer (2.7) is connected with a rectification voltage-regulating circuit (2.8), the rectification voltage-regulating circuit (2.8) is connected with a shunt (2.9), the shunt (2.9) is connected with a Hall sensor (2.10), and the Hall sensor (2.10) is connected with an output interface (2.11); the shunt (2.9) is connected with the acquisition circuit (2.5), the Hall sensor (2.10) is connected with the acquisition circuit (2.5), and the acquisition circuit (2.5) is connected with the control circuit (2.3);
the button station (2.2) and the touch screen (2.4) are connected with a controller (2.3), and the controller (2.3) is connected with a rectification voltage-regulating circuit (2.8);
the station chopper (1) is connected with an output interface (2.11) of the voltage regulating station (2) through a power supply input interface (1.6).
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| CN201911163437.6A CN110814448B (en) | 2019-11-25 | 2019-11-25 | Centralized rectification and voltage transformation distributed chopping pulse power supply |
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| CN201911163437.6A CN110814448B (en) | 2019-11-25 | 2019-11-25 | Centralized rectification and voltage transformation distributed chopping pulse power supply |
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| CN110814448B true CN110814448B (en) | 2020-08-25 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6411718A (en) * | 1987-07-07 | 1989-01-17 | Shizuoka Seiki Co Ltd | Power source for electrochemical machine |
| CN104128680B (en) * | 2014-07-16 | 2017-01-18 | 广东工业大学 | Electrochemical machining high frequency pulse power source based on SOPC technology |
| CN104475886B (en) * | 2014-12-25 | 2017-02-22 | 西安建筑科技大学 | Chopped-mode energy-saving electromachining pulse power supply |
| CN206464656U (en) * | 2017-02-08 | 2017-09-05 | 北京东兴润滑剂有限公司 | Double frequency exports the pulse power and Wire EDM equipment |
| CN106849735B (en) * | 2017-03-30 | 2019-05-14 | 湘潭电机股份有限公司 | A kind of high power DC pulse power |
| CN107398609A (en) * | 2017-08-16 | 2017-11-28 | 南京亿希姆机电科技有限公司 | One kind is used for large space multiple computer desk Electrolyzed Processing intelligent control pulse power system |
| CN109986154B (en) * | 2017-12-29 | 2020-12-01 | 南京亿希姆机电科技有限公司 | Intelligent control pulse power supply system for multi-station blade electrolytic machining and control method |
| CN208262028U (en) * | 2018-05-28 | 2018-12-21 | 哈尔滨理工大学 | A kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply |
| CN109465511A (en) * | 2018-11-06 | 2019-03-15 | 广东工业大学 | A kind of multistation Wire EDM timesharing pulse power synchronous processing method |
| CN109894691B (en) * | 2019-04-01 | 2019-12-10 | 中北大学 | composite pulse power supply for ultrasonic electric spark machining |
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