CN107984391A - A kind of power supply device of grinding machine - Google Patents
A kind of power supply device of grinding machine Download PDFInfo
- Publication number
- CN107984391A CN107984391A CN201711493230.6A CN201711493230A CN107984391A CN 107984391 A CN107984391 A CN 107984391A CN 201711493230 A CN201711493230 A CN 201711493230A CN 107984391 A CN107984391 A CN 107984391A
- Authority
- CN
- China
- Prior art keywords
- phase
- grinding machine
- contactor
- power supply
- phase transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/162—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The present invention relates to grinding machine manufacture field, spy is related to a kind of power supply device of grinding machine.The three-phase and four-line supply line of the present invention connects magnetising or demagnetising apparatus and multiple contactors respectively.Wherein first contactor connection emery wheel motor, magnetising or demagnetising apparatus include undercurrent relay, and normally closed node one end of undercurrent relay is connected with direct current 24V, and the normally closed node other end after button K with first contactor KM1 coils with 24V ground wires by being connected.The present invention by increase undercurrent relay control emery wheel motor start and stop, avoid workpiece fly up injure by a crashing object equipment and personnel accident occur.
Description
Technical field
The present invention relates to grinding machine manufacture field, spy is related to a kind of power supply device of grinding machine.
Background technology
During the grinding machine workpieces processing of the prior art, magnetic-adsorption workpiece is used to be processed (this process for magnetize), processing
After the completion of demagnetize, remove workpiece.But in process, in fact it could happen that the electric current in magnetising or demagnetising apparatus in electromagnetic coil declines
Situation so that cause workpiece not firmly absorption；Or due to operating personnel's operation error, in no startup magnetising or demagnetising apparatus
In the case of be processed, such workpiece is in the processing of emery wheel motor, due to no fixed stably, easily flies out from grinding machine
Come, so as to cause casualty accident.Meanwhile existing apparatus, also in the presence of causing demagnetization to be not thorough, workpiece cannot be removed smoothly.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of power supply device of grinding machine.The present invention's passes through the
One contactor connects emery wheel motor, the undercurrent relay control first contactor in demagnetizer, it is achieved thereby that to electricity
The control of motivation power supply, when making low pressure low current or operating personnel's maloperation, emery wheel motor can be shut down in time, it is ensured that be added
The safety of worker person, and the present invention can realize complete demagnetization.
The technical scheme is that：A kind of power supply device of grinding machine, including three-phase and four-line supply line, three-phase four
Line supply line connects magnetising or demagnetising apparatus and first contactor, first contactor connection emery wheel motor respectively, it is characterised in that：
Magnetising or demagnetising apparatus include pressure regulation device, biphase rectification circuit, undercurrent relay, time delay discharge circuit and electromagnetic coil, owe electricity
Current relay is connected between biphase rectification circuit and time delay discharge circuit, and pressure regulation device includes three power inputs and two
Power output end, connects zero curve, three power inputs are respectively the first phase power supply by switching switch at pressure regulation device midpoint
Input terminal, the second phase power input and third phase power input；Including the first single-phase transformer and the second single-phase transformer,
One terminal of the first single-phase transformer first winding is connected with the first phase power input, another terminal and the second single-phase change
The midpoint of depressor first winding is connected, two terminals of the second single-phase transformer first winding respectively with the second phase power input
It is connected with third phase power input；The secondary winding of first single-phase transformer and the secondary windings in series of the second single-phase transformer
It is connected between two power output ends, two power output ends are connected by undercurrent relay and biphase rectification circuit input point
Connect；Biphase rectification circuit is made of four groups of thyristor groups, and four groups of thyristor groups form bridge circuit, and each group of brake tube group includes two
The thyristor of a mutually reversal connection, the output terminal difference time delay discharge circuit in parallel and electromagnetic coil of biphase rectification circuit；Undercurrent
Normally closed node one end of relay is connected with direct current 24V, the normally closed node other end by after button with first contactor coil
It is connected with 24V ground wires.
According to the power supply device of grinding machine as described above, it is characterised in that：The time delay discharge circuit includes electricity
Resistance, capacitance, the first diode, the second diode, wherein resistance are connected with the second diode cathode, the second diode cathode difference
With the first diode cathode and capacitance connection.
According to the power supply device of grinding machine as described above, it is characterised in that：Control system is further included, control system is used
In closure or the disconnection of control switching switch and thyristor.
The beneficial effects of the invention are as follows：First, magnetising or demagnetising apparatus use three phase voltage regulating device, make magnetising or demagnetising apparatus work electricity
Stream is more stablized, it is ensured that workpiece is by solid and reliable absorption；Second, control emery wheel motor by increasing undercurrent relay
Start and stop, avoid workpiece fly up injure by a crashing object equipment and personnel accident occur；Third, gradually decompression is put into practice by pressure regulation device
Demagnetization, so that the accurately control demagnetization time, realizes demagnetization completely.
Brief description of the drawings
Fig. 1 is the electrical block diagram of the present invention.
Description of reference numerals：A, B, C are respectively the triple line of input voltage, and N is zero curve, and midpoint D, K1 switch out for A phases
Close, K2 is B phase switching switches, and K3 is C phase switching switches, and VT1, VT5 are the first thyristor groups；VT2, VT6 are the second thyristor
Group；VT3, VT7 are the 3rd thyristor groups；VT4, VT8 are the 4th thyristor groups；A, b, c, d are low-pressure side output voltage point, and R is
Resistance, C are capacitance, D1 be the first diode D2 be the second diode, YA be electromagnetic coil, pressure regulation device 1, time delay discharge circuit
2nd, biphase rectification circuit 3, first contactor KM1, second contactor KM2, the 3rd contactor KM3, button K, undercurrent relay
KA。
Embodiment
Technical scheme is described further below in conjunction with attached drawing.
As shown in Figure 1, the power supply device of the grinding machine of the present invention includes three-phase and four-line supply line, three-phase and four-line power supply
Circuit connects magnetising or demagnetising apparatus and multiple contactors respectively, and such as the present invention includes 3 contactors, is respectively first contactor
KM1, second contactor KM2, the 3rd contactor KM3, second contactor KM2, the 3rd contactor KM3 can supply other equipment
Electricity, such as digital driving mechanism, Oil pump electrical machinery.Wherein first contactor KM1 connections emery wheel motor M1, magnetising or demagnetising apparatus include
Normally closed node one end of undercurrent relay KA, undercurrent relay KA are connected with direct current 24V, the normally closed node other end by by
It is connected after button K with first contactor KM1 coils with 24V ground wires, in this way, only when undercurrent relay KA is operated in normal electricity
Lu Shi, normally closed node closure, emery wheel motor M1 are only possible to start, and in the case of emerged in operation undertension, often
Close node can be opened in time, make emery wheel motor M1 out of service.When so may insure emery wheel motor M1 work, electromagnetic wire
Electric current is sufficiently large in circle YA, makes in process, and workpieces processing can be adsorbed firmly by magnetising or demagnetising apparatus, is not in add
Work workpiece flies out the accident hurted sb.'s feelings.
As shown in Figure 1, the magnetising or demagnetising apparatus of the grinding machine of the present invention include pressure regulation device 1, biphase rectification circuit 3, undercurrent
Relay KA, time delay discharge circuit 2 and electromagnetic coil YA, wherein 1 rear portion of pressure regulation device connection biphase rectification circuit 3, undercurrent
Relay KA is connected between biphase rectification circuit 3 and time delay discharge circuit 2,2 rear portion of time delay discharge circuit connection electromagnetic coil
YA。
As shown in Figure 1, the pressure regulation device 1 of magnetising or demagnetising apparatus includes three power inputs (A, B and C) and two power supplys are defeated
Outlet (a and d), in 1 midpoint D connection zero curves N of pressure regulation device, three power inputs are respectively the first phase power input A,
Two-phase power input B and third phase power input C；The present invention includes the first single-phase transformer (transformation corresponding to ADab
Device) and the second single-phase transformer (transformer corresponding to BCbdc), wherein, an end of the first single-phase transformer first winding
Son is connected with the first phase power input A, another terminal is connected with the midpoint D of the second single-phase transformer first winding, and second
Two terminals of single-phase transformer first winding are connected with the second phase power input B and third phase power input C respectively, from
And the first winding of the first single-phase transformer is formed as the first phase winding AD (i.e. A phase windings), the second single-phase transformer is once
Winding is formed as the second phase winding BD (i.e. B phase windings) and third phase winding CD (i.e. C phase windings).
As shown in Figure 1, the secondary winding of the first single-phase transformer of the present invention and the secondary winding of the second single-phase transformer
Series connection (being connected in series c, b connection a little seen in Fig. 1) is connected between two power output ends a, d, in the present invention, a points and d points
With being connected 3 input point of biphase rectification circuit after series connection undercurrent relay KA.Undercurrent relay KA is set to be had here
The advantages of sampling is the most accurate, such as, if undercurrent relay KA is located in a certain phase or two-phase, in factory process
On line, the startup of single device be easy to cause the decline of individual event voltage, so that individual event electric current declines, but the present invention is due to using
Three phase voltage regulating device 1, the electric current in its electromagnetic coil YA can't change, therefore workpiece is still held by electromagnetic coil YA, emery wheel electricity
Motivation M1 can be worked normally.Undercurrent relay KA is set herein, is capable of the change of accurate response electromagnetic coil YA electric currents, into
And starting or stoping for emery wheel motor M1 can be accurately controlled, prevent maloperation, and may insure operating personnel and equipment
Safety.
As described in Figure 1, biphase rectification circuit 3 of the invention is made of four groups of thyristor groups, and four groups of thyristor groups form bridge
Formula circuit, including the first thyristor groups (VT1, VT5), the second thyristor groups (VT2, VT6), the 3rd thyristor groups (VT3, VT7),
4th thyristor groups (VT4, VT8)；Each group of brake tube group includes the thyristor of two mutual reversal connections, biphase rectification circuit 3 it is defeated
Outlet difference time delay discharge circuit 2 in parallel and electromagnetic coil YA.As shown in Figure 1, the time delay discharge circuit 2 of the present invention includes resistance
R, capacitance C, the first diode D1, the second diode D2, wherein resistance R are connected with the second diode D2 cathodes, the second diode
D2 anode are connected with the first diode D1 cathodes and capacitance C respectively.
The present invention can also include control system, and control system is used to controlling switching switch K1, K2, K3 and thyristor
Closure disconnects.
The course of work of the present invention is：When grinding machine magnetizes, control system control switching switch K1, K2, K3 are closed first, brilliant lock
(VT1, VT2, VT3, VT4) conducting is managed, thyristor (VT5, VT6, VT7, VT8) cut-off, such electromagnetic coil YA electric currents increase, real
Now magnetize to grinding machine.When grinding machine normally magnetizes or keeps magnetic force, undercurrent relay KA electric currents are normal, normally closed node closure,
Emery wheel motor M1 is worked normally.When undercurrent relay KA current reductions, the electric current in electromagnetic coil YA also declines, at this time
Workpiece is possible to not held firmly, and normally closed node automatically opens up, and emery wheel motor M1 shuts down, and workpiece will not be because of sand
Take turns the rotation of motor and fly out, it is ensured that the safety of operating personnel and equipment.When needing demagnetization, control system makes thyristor
(VT1, VT2, VT3, VT4) ends, thyristor (VT5, VT6, VT7, VT8) conducting, so voltage of the loading in electromagnetic coil YA
Both ends positive and negative anodes change, and realize demagnetization, during present invention demagnetization, can gradually close section switching switch K3, K2, a K1, make to move back
Magnetoelectricity pressure gradually decreases.Since the present invention is controlled in the input terminal of pressure regulation device 1, without carrying out electricity by switching thyristor
Pressure is adjusted, therefore can accurately control every grade of demagnetization time, and precision is 0.01 second, and 3 switching switches can realize that three-level is demagnetized, and lead to
The field adjustable for crossing equipment controls the moment, it can be achieved that when voltage is zero, just stops demagnetization, realizes demagnetization completely.Secondly,
Resistance R in time delay discharge circuit 2 of the present invention can consume the energy consumption of electromagnetic coil YA during demagnetization, it is ensured that circuit is pacified
Entirely, after capacitance C, the first diode D1, the second diode D2 can make stopping magnetize and start demagnetization, make to start the demagnetization electricity applied
Pressure can be higher, and the voltage that then demagnetizes gradually reduces voltage.
Claims (3)
1. a kind of power supply device of grinding machine, including three-phase and four-line supply line, three-phase and four-line supply line connects respectively fills
Demagnetizer and first contactor, first contactor connection emery wheel motor, it is characterised in that：Magnetising or demagnetising apparatus include pressure regulator
Part, biphase rectification circuit, undercurrent relay, time delay discharge circuit and electromagnetic coil, undercurrent relay are connected on two-way whole
Between current circuit and time delay discharge circuit, pressure regulation device includes three power inputs and two power output ends, in pressure regulator
Part midpoint connects zero curve, and three power inputs are respectively that the first phase power input, the second phase power supply are defeated by switching switch
Enter end and third phase power input；Including the first single-phase transformer and the second single-phase transformer, the first single-phase transformer is once
One terminal of winding is connected with the first phase power input, the midpoint of another terminal and the second single-phase transformer first winding
Be connected, two terminals of the second single-phase transformer first winding respectively with the second phase power input and third phase power input
It is connected；The secondary winding of first single-phase transformer and the secondary windings in series of the second single-phase transformer are connected to two power supplys and export
Between end, two power output ends are connected by undercurrent relay with biphase rectification circuit input point；Biphase rectification circuit by
Four groups of thyristor groups compositions, four groups of thyristor groups form bridge circuit, and each group of brake tube group includes the brilliant lock of two mutual reversal connections
Pipe, the output terminal difference time delay discharge circuit in parallel and electromagnetic coil of biphase rectification circuit；The normally closed node of undercurrent relay
One end is connected with direct current 24V, and the normally closed node other end after button with first contactor coil with 24V ground wires by being connected.
2. the power supply device of grinding machine according to claim 1, it is characterised in that：The time delay discharge circuit includes
Resistance, capacitance, the first diode, the second diode, wherein resistance are connected with the second diode cathode, the second diode cathode point
Not with the first diode cathode and capacitance connection.
3. the power supply device of grinding machine according to claim 1, it is characterised in that：Further include control system, control system
System is used for closure or the disconnection for controlling switching switch and thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711493230.6A CN107984391B (en) | 2017-12-30 | 2017-12-30 | Power supply device of grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711493230.6A CN107984391B (en) | 2017-12-30 | 2017-12-30 | Power supply device of grinding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107984391A true CN107984391A (en) | 2018-05-04 |
| CN107984391B CN107984391B (en) | 2023-08-22 |
Family
ID=62040497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711493230.6A Active CN107984391B (en) | 2017-12-30 | 2017-12-30 | Power supply device of grinding machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN107984391B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637761A (en) * | 2018-06-08 | 2018-10-12 | 苏州工业职业技术学院 | Magnechuck fixture safety guard and circuit and process equipment control circuit |
| CN110587489A (en) * | 2019-09-11 | 2019-12-20 | 唐山钢铁集团有限责任公司 | Automatic control device of grinding machine paper filtering system |
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| JP2004130416A (en) * | 2002-10-09 | 2004-04-30 | Micron Seimitsu Kk | Method and apparatus for supplying workpiece for internal grinding machine |
| CN202258635U (en) * | 2011-09-13 | 2012-05-30 | 威海铁鹰数控有限公司 | Magnetizing and demagnetizing controller for electromagnetic chuck of grinder |
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| CN207953577U (en) * | 2017-12-30 | 2018-10-12 | 襄阳一福坦铁路轴承有限公司 | A kind of power supply device of grinding machine |
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| CN2491950Y (en) * | 2001-07-03 | 2002-05-15 | 瓦房店轴承集团有限责任公司 | Electromagnetic coreless card demagnetizer of bearing processing grinder |
| JP2004130416A (en) * | 2002-10-09 | 2004-04-30 | Micron Seimitsu Kk | Method and apparatus for supplying workpiece for internal grinding machine |
| CN202258635U (en) * | 2011-09-13 | 2012-05-30 | 威海铁鹰数控有限公司 | Magnetizing and demagnetizing controller for electromagnetic chuck of grinder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637761A (en) * | 2018-06-08 | 2018-10-12 | 苏州工业职业技术学院 | Magnechuck fixture safety guard and circuit and process equipment control circuit |
| CN110587489A (en) * | 2019-09-11 | 2019-12-20 | 唐山钢铁集团有限责任公司 | Automatic control device of grinding machine paper filtering system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107984391B (en) | 2023-08-22 |
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