CN104538150B - Bearing ring demagnetizing device - Google Patents
Bearing ring demagnetizing device Download PDFInfo
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- CN104538150B CN104538150B CN201410786471.XA CN201410786471A CN104538150B CN 104538150 B CN104538150 B CN 104538150B CN 201410786471 A CN201410786471 A CN 201410786471A CN 104538150 B CN104538150 B CN 104538150B
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Abstract
The invention relates to the field of bearing machining, in particular to a bearing ring demagnetizing device. A sensor in the bearing ring demagnetizing device is used for detecting an external bearing ring signal and transmitting the signal to a CPU. A data input and display unit inputs demagnetizing curve parameters to the CPU and displays demagnetizing parameter information. First and second drive circuits receive the demagnetizing curve parameters of the CPU and control current changes of first and second layer coils respectively, so that changes of a demagnetizing magnetic field are controlled for demagnetizing. The included angle between the winding direction of the second layer coil and the winding direction of the first layer coil ranges from 20 degrees to 45 degrees. The number of turns of the second layer coil is 30-40% that of the first layer coil. The first layer coil participates in the whole demagnetizing process, the second layer coil participates in demagnetizing only at the last stage of demagnetizing, namely during the period not exceeding 25% of the total time, and the second layer coil assists in eliminating the final residual magnetism intensity of bearing rings. The bearing ring demagnetizing device can well solve the problem of too much residual magnetism caused by incomplete demagnetizing of bearing ring demagnetizing equipment, is simple and small in structure, convenient to assemble and good in demagnetizing effect, and the residual magnetism of the device is smaller than 0.1 mT.
Description
Technical field
The present invention relates to bearing machining field is and in particular to a kind of bearing ring demagnetizer.
Background technology
Bearing ring surface after grinding is often stained with the debris such as iron filings just can be made it is necessary to clean up completely
With in case causing the damage of equipment.Due in grinding process because widely using of the devices such as magnetic chuck leads to bearing holder (housing, cover)
The magnetization on circle surface, so that the debris adhesion-tight such as iron filings, is difficult to be cleaned it is therefore necessary to it be carried out with demagnetization process simultaneously
Ensure that its residual magnetization is less than certain numerical value（GB is defined as 0.3mT）, this numerical value of national regulations is with industrial technology
Development has been difficult to meet processing request sometimes, and remanent magnetism produced by traditional solution is larger, and especially thickness is less
Often remanent magnetism is excessive for ultra-thin style ferrules edge, and the many times basic demand of even GB is all difficult to meet, thus causing
Rinse difficult, subsequently using the performance of equipment will be had a strong impact on equipment.
Content of the invention
For overcoming drawbacks described above, the purpose of the present invention is to provide a kind of demagnetization effectiveness preferable bearing ring demagnetization dress
Put.
The purpose of the present invention is achieved through the following technical solutions：
A kind of bearing ring demagnetizer of the present invention, main inclusion：CPU element, ground floor coil, second layer coil,
For detecting extraneous bearing ring signal the sensor by this bearing ring signal transmission to CPU element, for input demagnetization
Data input and display unit that parameter of curve to CPU element and shows demagnetization parameter information, are connected to CPU element and ground floor
Between coil, receive the first drive circuit that the demagnetizing curve state modulator ground floor coil current of CPU element changes, be connected to
Between CPU element and second layer coil, receive CPU element the demagnetizing curve state modulator second layer coil current change second
Drive circuit, the power subsystem being powered for this demagnetizer；
This demagnetizer also includes skeleton, and described ground floor coil, second layer coil are successively set on skeleton, described
The tunnel type through hole being easy to that bearing ring passes through, the winding direction of described ground floor coil and the axial direction of skeleton are offered on skeleton
Direction is vertical, and the angle between the winding direction of described second layer coil and the winding direction of ground floor coil is 20-45 degree, institute
State the 30%-40% that second layer coil turn is ground floor coil turn.
Further, described data input and display unit include：The keyboard circuit being connected with CPU element, with CPU element even
The display driver circuit connecing, the display circuit being connected with this display driver circuit；Described power subsystem includes：With CPU element
The CPU board signal wire socket circuit connecting, the power panel signal wire socket circuit being connected with this CPU board signal wire socket circuit,
+ 5V the voltage-stabilized power supply circuit powered for this power panel signal wire socket circuit, 24V power circuit；This demagnetizer also includes：With
The sensor interface circuitry that this power panel signal wire socket circuit connects, is connected between the first drive circuit and ground floor coil
The first ghyristor circuit, be connected to the second ghyristor circuit between the second drive circuit and second layer coil；Described sensing
Device connects on this sensor interface circuitry, and described 24V power circuit is electric with power panel signal wire socket circuit, the first driving respectively
Road, the second drive circuit and sensor interface circuitry connect power supply.
Further, this demagnetizer also includes：The ISP socket circuit being connected with CPU element, the work being connected with CPU element
Make status display circuit, be connected to the zero cross detection circuit between CPU element and CPU board signal wire socket circuit.
Further, described CPU element is ATMEGA8 chip, and the pin 1 of ATMEGA8 chip connects by resistance R13 and electric capacity C1 group
The electrification reset circuit becoming and ISP socket circuit, this electrification reset circuit two ends connects+5V voltage-stabilized power supply circuit and ground connection respectively,
Pin 2, pin 3 sky connect, and pin 4 connects CPU board signal wire socket circuit, power panel signal wire socket circuit and sensor interface circuitry, pin 5
+ 5V voltage-stabilized power supply circuit is connect by resistance R1 and connects zero cross detection circuit, pin 6 sky connects, and pin 7 connects+5V voltage-stabilized power supply circuit, pin
8 ground connection, pin 9, pin 10 connect crystal oscillator and pass through electric capacity C4, electric capacity C6 ground connection respectively at crystal oscillator two ends, and pin 11, pin 12, pin 13 are grounded,
Pin 12, pin 13 are simultaneously connected with keyboard circuit, and pin 14 is followed by+5V voltage-stabilized power supply circuit by resistance R18, and pin 15 connects the first driving electricity
Road, pin 16 connects the second drive circuit, CPU board signal wire socket circuit, power panel signal wire socket circuit and working condition respectively
Display circuit, pin 17, pin 18 and pin 19 connect ISP socket circuit, and pin 20 connects the filter circuit being made up of inductance L2 and electric capacity C16,
This filter circuit two ends connects+5V voltage-stabilized power supply circuit and ground connection respectively, and pin 21 is grounded after electric capacity C15, and pin 22 is grounded, pin 23
Connect the intermediate contact of potentiometer R24, this potentiometer R24 two ends connect+5V voltage-stabilized power supply circuit and ground connection respectively, pin 24, pin 25 are empty
Connect, pin 26 connects display circuit, pin 27, pin 28 connect display driver circuit.
Further, described first drive circuit is identical with the second driving circuit structure, described first ghyristor circuit and
Two ghyristor circuit structures are identical；Pin 15 PB1 of ATMEGA8 chip, pin 16 PB2 connect the 1 of photoelectrical coupler U3, U1 respectively
Pin, through resistance R6, R5 connecting triode Q2, Q1, triode Q2, Q1 connect pulse transformer to 3 pin of photoelectrical coupler U3, U1
2 pin of JP8, JP3,4 pin of pulse transformer JP8, JP3 connect bidirectional triode thyristor J5, J1,3 pin of pulse transformer JP8, JP3
Connect 3 pin of bidirectional triode thyristor J5, J1 respectively by diode D8, D1, resistance R7, R3 are connected across triode Q2, Q1 respectively
B, E the two poles of the earth, the positive pole of diode D7, D2 connects 2 pin of pulse transformer JP8, JP3 respectively, and the negative pole of diode D7, D2 connects respectively
One pin of pulse transformer JP8, JP3,2,3 pin of bidirectional triode thyristor J5, J1 are connected across electric capacity C9, C1 two ends, electric capacity respectively
C10, C8 are connected across between 1 pin of bidirectional triode thyristor J5, J1 and 3 pin after being connected with resistance R10, R4 respectively.
Further, described+5V voltage-stabilized power supply circuit is through rectifier bridge D4 rectification and through electricity after transformer transformation exports
It is input to 1 pin of three-terminal regulator block 7805, the 3 pin outputs through three-terminal regulator block 7805 are simultaneously filtered through electric capacity C6 after holding C4, C5 filtering
Ripple；Described 24V power circuit is to be divided into two-way after rectifier bridge D3 rectification after transformer transformation exports, and a road is examined with zero passage
Slowdown monitoring circuit connects, and another road filters through Zener diode D6 voltage stabilizing and by electric capacity C2, C3；Described+5V voltage-stabilized power supply circuit and 24V
Power circuit shares same ground wire.
Further, described display driver circuit adopts two panels 74HC164 chip, and two panels 74HC164 chip adopts level to couple
Method, the data wire 1 of two panels 74HC164 chip, 2 pin connect 28 pin of ATMEGA8 chip, and 8 pin connect 27 pin of ATMEGA8 chip, 9 pin
Connect+5V voltage-stabilized power supply circuit；
Described display circuit adopts two 8 sections of LED charactrons, and two 8 sections of LED charactrons adopt common-anode, and two
8 pin of individual 8 sections of LED charactrons connect+5V voltage-stabilized power supply circuit and connect the 26 of ATMEGA8 chip by resistance R25, diode D3
Pin, 3 pin ground connection, 1,2,4,5,6,7,9,10 pin connect the Q0-Q7 pin of two panels 74HC164 chip respectively, in two panels 74HC164 chip
Q0-Q7 pin and the indirect resistance R12 of two 8 sections of LED charactrons 1,2,4,5,6,7,9,10 pin, R20, R21, R22, R30,
R31, R35, R36 and R2, R3, R4, R5, R6, R7, R8, R9.
Further, described CPU board signal wire socket circuit adopts the double socket circuit of 5 pins, 1,3 pin ground connection, and 2 pin connect
4 pin of ATMEGA8 chip, 4 pin connect 16 pin of ATMEGA8 chip, and 5 pin connect zero cross detection circuit, and it is steady that 6,7,8,9,10 pin meet+5V
Piezoelectricity source circuit；
Described power panel signal wire socket circuit adopts the double socket circuit of 5 pins, 2,4 pin ground connection, and 1 pin meets ATMEGA8
4 pin of chip, 3 pin connect 16 pin of ATMEGA8 chip, and 6 pin connect zero cross detection circuit, and 5,7,8,9,10 pin connect+5V voltage-stabilized power supply
Circuit.
Further, it is provided with sensor type choosing between described power panel signal wire socket circuit and sensor interface circuitry
Select wire jumper socket circuit；Holding wire on sensor interface circuitry totally 3, respectively power supply, GND and switch signal line, switch
Holding wire is followed by 1 pin of photoelectrical coupler U2 by electric capacity C7 filtering, is connected to ATMEGA8 chip by photoelectrical coupler U2 output
4 pin.
Further, described ISP socket circuit adopts the double socket circuit of 5 pins, 1,3,5,7 pin ground connection, and it is steady that 9 pin meet+5V
Piezoelectricity source circuit, 2 pin meet 18 pin MISO of ATMEGA8 chip for MISO, and 4 pin meet 19 pin SCK of ATMEGA8 chip for SCK, and 6
Pin meets 1 pin RST of ATMEGA8 chip for RST, and 8 pin skies connect, and 10 pin meet 17 pin MOSI of ATMEGA8 chip for MOSI；
Described working condition display circuit adopts light emitting diode D1, and light emitting diode D1 positive pole is connected by resistance R14
16 pin PB2 of ATMEGA8 chip, light emitting diode D1 negative pole is grounded by resistance R37, and electric capacity C2, C3, C5, C14 be connected across+
Between 5V voltage-stabilized power supply circuit and ground wire；
Described keyboard circuit adopts two microswitches, and one end of two microswitches connects the 12 of ATMEGA8 chip respectively
Pin PD6 and 13 pin PD7, the other end connects+5V voltage-stabilized power supply circuit by resistance R19, R23 respectively；
Described zero cross detection circuit adopts LM324 chip, and 1 pin sky of LM324 chip connects, 2 pin pass through respectively resistance R26,
R27 even+5V voltage-stabilized power supply circuit, ground connection, 3 pin, 5 pin respectively by resistance R28, R29 even+5V voltage-stabilized power supply circuit, ground connection, 4
Pin connects+5V voltage-stabilized power supply circuit, and respectively by resistance R15, R32 even+5V voltage-stabilized power supply circuit, ground connection, 7 pin skies connect 6 pin, 8 pin
Connect 5 pin of ATMEGA8 chip, 9 pin are grounded by light emitting diode D4, resistance R33 respectively and connect 24V power supply by resistance R34
Circuit, 10 pin are connect+5V voltage-stabilized power supply circuit by resistance R17 and are grounded by diode D12,11 pin ground connection, and 12 pin pass through electricity
Resistance R16 connects+5V voltage-stabilized power supply circuit, and 13 pin, 14 pin skies connect.
A kind of bearing ring demagnetizer that the present invention provides, the extraneous bearing ring of sensor detection in this demagnetizer
Signal by this bearing ring signal transmission to CPU element, inputs demagnetizing curve parameter extremely by data input and display unit
CPU element and display demagnetization parameter information, the first drive circuit receives the demagnetizing curve state modulator ground floor coil of CPU element
Curent change, the second drive circuit receives the demagnetizing curve state modulator second layer coil current change of CPU element, controls two
The energising situation of coil thus controlling the change of demagnetized field to reach demagnetization effectiveness, wherein the winding direction of ground floor coil with
The axial direction of skeleton is vertical, and the angle between the winding direction of the winding direction of second layer coil and ground floor coil is 20-
45 degree, second layer coil turn is the 30%-40% of ground floor coil turn, and ground floor coil overall process participates in demagnetization, the second layer
Coil only in demagnetization final stage, participates in demagnetization in the time less than the 25% of total time, assists removing bearing ring last
Residual magnetization, this demagnetizer can be good at solving that the bearing ring demagnetizing apparatus remanent magnetism that not exclusively leads to of demagnetization is excessive to ask
Topic, uses mainly when bearing ring demagnetizes after grinding, and structure is simply compact, and easy to assembly, demagnetization effectiveness is good, its
Remanent magnetism is less than 0.1mT.
Brief description
For ease of explanation, the present invention is described in detail by following preferred embodiments and accompanying drawing.
Fig. 1 is a kind of lateral plan of present invention bearing ring demagnetizer；
Fig. 2 is the structural representation of ground floor coil on a kind of present invention bearing ring demagnetizer；
Fig. 3 is the structural representation of ground floor coil and second layer fitting coils on a kind of present invention bearing ring demagnetizer
Figure；
Fig. 4 is a kind of circuit block diagram of embodiment in a kind of present invention bearing ring demagnetizer；
Fig. 5 is the circuit block diagram of another kind of embodiment in a kind of present invention bearing ring demagnetizer；
Fig. 6 is the circuit diagram of CPU element in a kind of present invention bearing ring demagnetizer；
Fig. 7 is the first drive circuit, the second drive circuit, the first controllable silicon in a kind of present invention bearing ring demagnetizer
Circuit, the connection circuit diagram of the second ghyristor circuit ,+5V voltage-stabilized power supply circuit and 24V power circuit；
Fig. 8 is the circuit diagram of display driver circuit in a kind of present invention bearing ring demagnetizer；
Fig. 9 is the circuit diagram of display circuit in a kind of present invention bearing ring demagnetizer；
Figure 10 is the circuit diagram of CPU board signal wire socket circuit in a kind of present invention bearing ring demagnetizer；
Figure 11 is the circuit diagram of power panel signal wire socket circuit in a kind of present invention bearing ring demagnetizer；
Figure 12 is the circuit diagram that in a kind of present invention bearing ring demagnetizer, sensor type selects wire jumper socket circuit；
Figure 13 is the circuit diagram of sensor interface circuitry in a kind of present invention bearing ring demagnetizer；
Figure 14 is the circuit diagram of ISP socket circuit in a kind of present invention bearing ring demagnetizer；
Figure 15 is the circuit diagram of working condition display circuit in a kind of present invention bearing ring demagnetizer；
Figure 16 is the circuit diagram of keyboard circuit in a kind of present invention bearing ring demagnetizer；
Figure 17 is the circuit diagram of zero cross detection circuit in a kind of present invention bearing ring demagnetizer.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
Refer to Fig. 1-17, a kind of bearing ring demagnetizer of the present invention, referring specifically to Fig. 4, mainly include：CPU is mono-
Unit, ground floor coil 2, second layer coil 3, for detecting extraneous bearing ring signal by this bearing ring signal transmission extremely
The sensor of CPU element, and shows to the data input of CPU element and display demagnetization parameter information for inputting demagnetizing curve parameter
Show unit, be connected between CPU element and ground floor coil 2, receive the demagnetizing curve state modulator ground floor coil of CPU element
First drive circuit of 2 curent changes, is connected between CPU element and second layer coil 3, receives the demagnetizing curve of CPU element
Second drive circuit of state modulator second layer coil 3 curent change, the power subsystem being powered for this demagnetizer.
Referring specifically to Fig. 1-3, this demagnetizer also includes skeleton 1, and this ground floor coil 2, second layer coil 3 set successively
Put on skeleton 1, this skeleton 1 offers the tunnel type through hole 4 being easy to that bearing ring passes through, the winding of this ground floor coil 2
Direction is vertical with the axial direction of skeleton 1, between the winding direction of the winding direction of this second layer coil 3 and ground floor coil 2
Angle be 20-45 degree, this second layer coil 3 number of turn be ground floor coil 2 number of turn 30%-40%.
With another embodiment, this invention is described in detail below, referring specifically to Fig. 5, this data input and display are single
Unit includes：The keyboard circuit being connected with CPU element, the display driver circuit being connected with CPU element, with this display driver circuit even
The display circuit connecing.This power subsystem includes：The CPU board signal wire socket circuit being connected with CPU element, with this CPU board letter
The power panel signal wire socket circuit that number line socket circuit connects ,+5V the voltage stabilizing powered for this power panel signal wire socket circuit
Power circuit, 24V power circuit.This demagnetizer also includes：The sensor being connected with this power panel signal wire socket circuit is connect
Mouth circuit, is connected to the first ghyristor circuit between the first drive circuit and ground floor coil 2, is connected to the second drive circuit
The second ghyristor circuit and second layer coil 3 between.This sensor connects on this sensor interface circuitry, this 24V power supply electricity
Road is connected confession with power panel signal wire socket circuit, the first drive circuit, the second drive circuit and sensor interface circuitry respectively
Electricity.This demagnetizer also includes：The ISP socket circuit being connected with CPU element, the working condition display electricity being connected with CPU element
Road, is connected to the zero cross detection circuit between CPU element and CPU board signal wire socket circuit.
The course of work of this demagnetizer is：This bearing ring signal is simultaneously passed by the extraneous bearing ring signal of sensor detection
Transport to CPU element, CPU element is carried out to material magnetization curve according to bearing ring material and size parameter preset and algorithm
Join, and be fitted being calculated desired parameters table according to spline function, simultaneously according to keyboard circuit set delay time and
Demagnetization pattern sends control signal and controls two to the first drive circuit, the second drive circuit respectively by two bidirectional triode thyristors
Degaussion coil curent change thus controlling the change in magnetic field, bearing ring pass through tunnel formula through hole 4 participate in demagnetization, reaching demagnetization effect
Really.CPU element adopts ATMEGA8 chip, controls the operation of whole circuit and controls whole process of demagnetizing, its memory cell adopts
ATMEGA8 chip internal memory, responsible storage program and preset demagnetizing curve.The maximum feature of this degaussion coil is to employ
Two coils are demagnetized, respectively ground floor coil 2 and second layer coil 3.Wherein main demagnetization is responsible for by ground floor coil 2
Work, coil turn is more, and its number of turn mainly determines, second layer coil 3 exists by the factor such as coil dimension and design magnetic field intensity
Demagnetization final stage addition work, participates in demagnetization in the time less than the 25% of total time, assists removing bearing ring last
Residual magnetization, its number of turn is less, and the concrete number of turn is mainly determined by the factor such as coil dimension and design magnetic field intensity, specific the
Two layer line circle 3 number of turn is the 30%-40% of ground floor coil 2 number of turn.There is between two-layer coil an angle theta, its big I by
The length, width and height of skeleton 1 are calculated by formula and determine, θ changes between 20～45 degree according to skeleton 1 size.This demagnetizer can
Solve the remanent magnetism problems of too that the demagnetization of bearing ring demagnetizing apparatus not exclusively leads to well, mainly in bearing ring through grinding
Use when demagnetizing after processing, structure is simply compact, and easy to assembly, demagnetization effectiveness is good, its remanent magnetism is less than 0.1mT.
Refer to Fig. 6, this CPU element is ATMEGA8 chip, the pin 1 of ATMEGA8 chip connects by resistance R13 and electric capacity C1
The electrification reset circuit of composition and ISP socket circuit, this electrification reset circuit two ends connects+5V voltage-stabilized power supply circuit respectively and connects
Ground, pin 2, pin 3 sky connect, and pin 4 connects CPU board signal wire socket circuit, power panel signal wire socket circuit and sensor interface circuitry,
Pin 5 connects+5V voltage-stabilized power supply circuit by resistance R1 and connects zero cross detection circuit, and pin 6 sky connects, and pin 7 connects+5V voltage-stabilized power supply electricity
Road, pin 8 is grounded, and pin 9, pin 10 connect crystal oscillator and pass through electric capacity C4, electric capacity C6 ground connection, pin 11, pin 12, pin 13 respectively at crystal oscillator two ends
Ground connection, pin 12, pin 13 are simultaneously connected with keyboard circuit, and pin 14 is followed by+5V voltage-stabilized power supply circuit by resistance R18, and pin 15 connects first
Drive circuit, pin 16 connects the second drive circuit, CPU board signal wire socket circuit, power panel signal wire socket circuit and work respectively
Make status display circuit, pin 17, pin 18 and pin 19 connect ISP socket circuit, and pin 20 connects the filtering being made up of inductance L2 and electric capacity C16
Circuit, this filter circuit two ends connects+5V voltage-stabilized power supply circuit and ground connection respectively, and pin 21 is grounded after electric capacity C15, and pin 22 connects
Ground, pin 23 connects the intermediate contact of potentiometer R24, and this potentiometer R24 two ends connect+5V voltage-stabilized power supply circuit and ground connection respectively, this electricity
Position device R24 can adjust demagnetization intensity, and pin 24, pin 25 sky connect, and pin 26 connects display circuit, and pin 27, pin 28 connect display and drive electricity
Road.
Refer to Fig. 7, this first drive circuit is identical with the second driving circuit structure, this first ghyristor circuit and second
Ghyristor circuit structure is identical.The control signal that pin 15 PB1 of ATMEGA8 chip, pin 16 PB2 send is respectively connected to light thermocouple
1 pin of clutch U3, U1, drives triode Q2, Q1 by 3 pin of photoelectrical coupler U3, U1 through resistance R6, R5, and by triode
2 pin of pulse transformer JP8, JP3 after Q2, Q1 amplification, the 4 pin connection bidirectional triode thyristor J5 of pulse transformer JP8, JP3,
J1, the final turn-on and turn-off controlling bidirectional triode thyristor J5, J1, thus control the electric current of two coils.Pulse transformer JP8,
3 pin of JP3 connect 3 pin of bidirectional triode thyristor J5, J1 respectively by diode D8, D1, and resistance R7, R3 are connected across triode respectively
B, E the two poles of the earth of Q2, Q1.The positive pole of diode D7, D2 connects 2 pin of pulse transformer JP8, JP3 respectively, and diode D7, D2's is negative
Pole connects a pin of pulse transformer JP8, JP3 respectively, provides discharge path.The 2 of bidirectional triode thyristor J5, J1,3 pin are connected across respectively
Electric capacity C9, C1 two ends, electric capacity C10, C8 are connected across 1 pin and 3 pin of bidirectional triode thyristor J5, J1 with resistance R10, R4 after connecting respectively
Between.380V50HZ electric main transformation is exported by the power supply that being somebody's turn to do+5V voltage-stabilized power supply circuit provides by a secondary of transformer,
It is input to 1 pin of three-terminal regulator block 7805 through electric capacity C4, C5 through rectifier bridge D4 rectification and after filtering after transformation output, steady through three ends
3 pin of briquetting 7805 export and obtain after filtering again through electric capacity C6.The power supply that this 24V power circuit provides is transformer
380V50HZ electric main transformation is exported by another secondary, becomes pulsating direct current letter after transformation output after rectifier bridge D3 rectification
Number, then it is divided into two-way, a road is connected for zero passage detection with LM324 chip 9 pin of zero cross detection circuit, and another road is through voltage stabilizing
Diode D6 voltage stabilizing is simultaneously become and is externally powered after 24V constant voltage dc source by electric capacity C2, C3 filtering.Should+5V voltage-stabilized power supply
Circuit and 24V power circuit share same ground wire.
Refer to Fig. 8-9, this display driver circuit adopts two panels 74HC164 chip, drive two 8 sections as drive circuit
LED charactron is shown, two panels 74HC164 chip adopts level attached method, and the data wire 1 of two panels 74HC164 chip, 2 pin are short
Connect 28 pin being followed by ATMEGA8 chip as data wire input, 8 pin connect 27 pin of ATMEGA8 chip as clock signal, 9 pin
Connect+5V voltage-stabilized power supply circuit.This display circuit adopts two 8 sections of LED charactrons, and two 8 sections of LED charactrons adopt common-anode
Connection, 8 pin of two 8 sections of LED charactrons connect+5V voltage-stabilized power supply circuit and connect ATMEGA8 core by resistance R25, diode D3
26 pin of piece, 3 pin ground connection, 1,2,4,5,6,7,9,10 pin are data wire, connect the Q0-Q7 pin of two panels 74HC164 chip respectively
Control numeral method, in Q0-Q7 pin and two 8 sections of LED charactrons 1,2,4,5,6,7,9,10 pin of two panels 74HC164 chip
Indirect resistance R12, R20, R21, R22, R30, R31, R35, R36 and R2, R3, R4, R5, R6, R7, R8, R9 carry out current limliting.Should
Two panels 74HC164 chip and two 8 sections of LED charactrons are all using the power supply of+5V voltage-stabilized power supply circuit offer.
Refer to Figure 10-11, this CPU board signal wire socket circuit adopts the double socket circuit of 5 pins, 1,3 pin ground connection, 2
Pin connects 4 pin of ATMEGA8 chip, and 4 pin connect 16 pin of ATMEGA8 chip, and 5 pin connect 9 pin of zero cross detection circuit LM324 chip,
6th, 7,8,9,10 pin connect+5V voltage-stabilized power supply circuit.This power panel signal wire socket circuit adopt the double socket circuit of 5 pins, 2,4
Pin is grounded, and 1 pin connects 4 pin of ATMEGA8 chip, and 3 pin connect 16 pin of ATMEGA8 chip, and 6 pin connect zero cross detection circuit LM324 core
9 pin of piece, 5,7,8,9,10 pin connect+5V voltage-stabilized power supply circuit.
Refer to Figure 12-13, between this power panel signal wire socket circuit and sensor interface circuitry, be provided with sensor
Type selecting wire jumper socket circuit.Sensor interface circuitry adopts electromagnetic proximity switch to detect workpiece signal, sensor thereon
Holding wire totally 3, respectively power supply, GND and switch signal line, sensor interface circuitry passes through binding post J3 to be believed with power panel
Number line socket circuit is connected, wherein power supply（1 pin of J3）Using 24V constant voltage dc source, GND（3 pin of J3）For ground wire, and it is
Altogether, switch signal line（2 pin of J3）The signal of output is first followed by 1 pin of photoelectrical coupler U2 by electric capacity C7 filtering, by light
Electric coupler is isolated, then is connected to 4 pin of ATMEGA8 chip by photoelectrical coupler U2 output.Because sensor divides PNP
With two kinds of NPN, for improving system suitability, wire jumper socket circuit is selected to come to biography so devising sensor type in systems
Sensor type is selected, and it is the wire jumper JP4 of a 4x2, when using NPN type sensor, 1, No. 3 wire jumpers of short circuit, and adopt
The sensor of positive-negative-positive contact output then selects short circuit 2,4 wire jumpers, and sensor signal is connected with wire jumper by binding post J3
Connect.
Refer to Figure 14, this ISP socket circuit carries out System Programming to ATMEGA8 chip, this ISP socket circuit adopts 5
The double socket circuit of pin, 1,3,5,7 pin ground connection, 9 pin connect+5V voltage-stabilized power supply circuit, and 2 pin connect ATMEGA8 chip for MISO
18 pin MISO, 4 pin meet 19 pin SCK of ATMEGA8 chip for SCK, and 6 pin meet 1 pin RST of ATMEGA8 chip for RST, and 8 pin are empty
Connect, 10 pin meet 17 pin MOSI of ATMEGA8 chip for MOSI.
Refer to Figure 15, this working condition display circuit adopts light emitting diode D1, light emitting diode D1 positive pole passes through electricity
Resistance R14 connects 16 pin PB2 of ATMEGA8 chip, lights this light emitting diode D1 when 16 pin PB2 output services signal, lights
Diode D1 negative pole is grounded by resistance R37, wherein electric capacity C2, C3, C5, C14 be connected across+5V voltage-stabilized power supply circuit and ground wire it
Between play to CPU element output signal decoupling function.
Refer to Figure 16, system work process can be reached by keyboard its parameter is set, this keyboard circuit
Using two microswitches, one end of two microswitches connects the 12 pin PD6 and 13 pin PD7 of ATMEGA8 chip, the other end respectively
Respectively+5V voltage-stabilized power supply circuit is connect by resistance R19, R23.
Refer to Figure 17, this zero cross detection circuit adopts LM324 chip, 1 pin sky of LM324 chip connects, and 2 pin pass through respectively
Resistance R26, R27 even+5V voltage-stabilized power supply circuit, ground connection, 3 pin, 5 pin are respectively by resistance R28, R29 even+5V voltage-stabilized power supply electricity
Road, ground connection, 4 pin connect+5V voltage-stabilized power supply circuit, and 6 pin are respectively by resistance R15, R32 even+5V voltage-stabilized power supply circuit, ground connection, 7 pin
Sky connects, and 8 pin connect 5 pin of ATMEGA8 chip, and 9 pin are grounded by light emitting diode D4, resistance R33 respectively and are connect by resistance R34
24V power circuit, 10 pin are connect+5V voltage-stabilized power supply circuit by resistance R17 and are grounded by diode D12,11 pin ground connection, 12 pin
+ 5V voltage-stabilized power supply circuit is connect by resistance R16,13 pin, 14 pin skies connect, the pin that its sky connects is to prevent from disturbing.This LM324 core
9 pin of piece fetch the fluctuating signal from 24V power supply, and the circuit phase string composing in parallel with light emitting diode D4 and resistance R33
Connection, obtains the voltage produced by bleeder circuit that zero passage voltage is composed in series with 10 pin connecting resistance R17 and diode D12 and is compared
Relatively to realize zero passage detection, the zero-crossing pulse signal that its detection obtains exports 5 pin INT1 of ATMEGA8 chip by 8 pin.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of bearing ring demagnetizer is it is characterised in that main include：CPU element, ground floor coil, second layer coil,
For detecting extraneous bearing ring signal the sensor by this bearing ring signal transmission to CPU element, for input demagnetization
Data input and display unit that parameter of curve to CPU element and shows demagnetization parameter information, are connected to CPU element and ground floor
Between coil, receive the first drive circuit that the demagnetizing curve state modulator ground floor coil current of CPU element changes, be connected to
Between CPU element and second layer coil, receive CPU element the demagnetizing curve state modulator second layer coil current change second
Drive circuit, the power subsystem being powered for this demagnetizer；
This demagnetizer also includes skeleton, and described ground floor coil, second layer coil are successively set on skeleton, described skeleton
On offer the tunnel type through hole being easy to that bearing ring passes through, the winding direction of described ground floor coil and the axial direction of skeleton
Vertically, the angle between the winding direction of described second layer coil and the winding direction of ground floor coil is 20-45 degree, described
Two layers of coil turn are the 30%-40% of ground floor coil turn；
Described second layer coil, in demagnetization final stage addition work, participated in moving back within the time less than the 25% of total time
Magnetic.
2. a kind of bearing ring demagnetizer according to claim 1 is it is characterised in that described data input and display are single
Unit includes：The keyboard circuit being connected with CPU element, the display driver circuit being connected with CPU element, with this display driver circuit even
The display circuit connecing；Described power subsystem includes：The CPU board signal wire socket circuit being connected with CPU element, with this CPU board
The power panel signal wire socket circuit that signal wire socket circuit connects ,+the 5V powering for this power panel signal wire socket circuit is steady
Piezoelectricity source circuit, 24V power circuit；This demagnetizer also includes：The sensor being connected with this power panel signal wire socket circuit
Interface circuit, is connected to the first ghyristor circuit between the first drive circuit and ground floor coil, is connected to the second driving electricity
The second ghyristor circuit between road and second layer coil；Described sensor connects on this sensor interface circuitry, described 24V electricity
Source circuit is respectively with power panel signal wire socket circuit, the first drive circuit, the second drive circuit and sensor interface circuitry even
Connect power supply.
3. a kind of bearing ring demagnetizer according to claim 2 is it is characterised in that this demagnetizer also includes：With
The ISP socket circuit that CPU element connects, the working condition display circuit being connected with CPU element, it is connected to CPU element and CPU board
Zero cross detection circuit between signal wire socket circuit.
4. a kind of bearing ring demagnetizer according to claim 3 is it is characterised in that described CPU element is ATMEGA8
Chip, the pin 1 of ATMEGA8 chip connects the electrification reset circuit being made up of resistance R13 and electric capacity C1 and ISP socket circuit, on this
Reset circuit two ends connect+5V voltage-stabilized power supply circuit and ground connection respectively, and pin 2, pin 3 sky connect, and pin 4 connects CPU board signal wire socket electricity
Road, power panel signal wire socket circuit and sensor interface circuitry, pin 5 connects+5V voltage-stabilized power supply circuit by resistance R1 and connects
Zero cross detection circuit, pin 6 sky connects, and pin 7 connects+5V voltage-stabilized power supply circuit, and pin 8 is grounded, and pin 9, pin 10 connect crystal oscillator and at crystal oscillator two ends
Pass through electric capacity C4, electric capacity C6 respectively to be grounded, pin 11, pin 12, pin 13 are grounded, and pin 12, pin 13 are simultaneously connected with keyboard circuit, and pin 14 leads to
Cross resistance R18 and be followed by+5V voltage-stabilized power supply circuit, pin 15 connects the first drive circuit, pin 16 connects the second drive circuit, CPU board respectively
Signal wire socket circuit, power panel signal wire socket circuit and working condition display circuit, pin 17, pin 18 and pin 19 meet ISP and insert
Seat circuit, pin 20 connects the filter circuit being made up of inductance L2 and electric capacity C16, and this filter circuit two ends connects+5V voltage-stabilized power supply respectively
Circuit and ground connection, pin 21 is grounded after electric capacity C15, and pin 22 is grounded, and pin 23 connects the intermediate contact of potentiometer R24, this potentiometer
R24 two ends connect+5V voltage-stabilized power supply circuit and ground connection respectively, and pin 24, pin 25 sky connect, and pin 26 connects display circuit, and pin 27, pin 28 connect
Display driver circuit.
5. a kind of bearing ring demagnetizer according to claim 4 is it is characterised in that described first drive circuit and
Two driving circuit structures are identical, and described first ghyristor circuit is identical with the second ghyristor circuit structure；The pin of ATMEGA8 chip
15PB1, pin 16PB2 connect 1 pin of photoelectrical coupler U3, U1 respectively, and 3 pin of photoelectrical coupler U3, U1 connect three through resistance R6, R5
Pole pipe Q2, Q1, triode Q2, Q1 connect 2 pin of pulse transformer JP8, JP3, and the 4 pin connections of pulse transformer JP8, JP3 are double
To controllable silicon J5, J1,3 pin of pulse transformer JP8, JP3 connect the 3 of bidirectional triode thyristor J5, J1 respectively by diode D8, D1
Pin, resistance R7, R3 are connected across B, E the two poles of the earth of triode Q2, Q1 respectively, and the positive pole of diode D7, D2 connects pulse transformer respectively
2 pin of JP8, JP3, the negative pole of diode D7, D2 connects a pin of pulse transformer JP8, JP3 respectively, bidirectional triode thyristor J5, J1's
2nd, 3 pin are connected across electric capacity C9, C1 two ends respectively, and electric capacity C10, C8 are connected across bidirectional triode thyristor after connecting with resistance R10, R4 respectively
Between 1 pin of J5, J1 and 3 pin.
6. a kind of bearing ring demagnetizer according to claim 5 is it is characterised in that described+5V voltage-stabilized power supply circuit
It is to be input to three-terminal regulator block 7805 through rectifier bridge D4 rectification and after filtering through electric capacity C4, C5 after transformer transformation exports
1 pin, the 3 pin outputs through three-terminal regulator block 7805 simultaneously filter through electric capacity C6；Described 24V power circuit is defeated by transformer transformation
It is divided into two-way after rectifier bridge D3 rectification, a road is connected with zero cross detection circuit, another road is through Zener diode D6 voltage stabilizing after going out
And filtered by electric capacity C2, C3；Described+5V voltage-stabilized power supply circuit and 24V power circuit share same ground wire.
7. a kind of bearing ring demagnetizer according to claim 6 is it is characterised in that described display driver circuit adopts
Two panels 74HC164 chip, two panels 74HC164 chip adopts level attached method, and the data wire 1 of two panels 74HC164 chip, 2 pin connect
28 pin of ATMEGA8 chip, 8 pin connect 27 pin of ATMEGA8 chip, and 9 pin connect+5V voltage-stabilized power supply circuit；Described display circuit
Using two 8 sections of LED charactrons, two 8 sections of LED charactrons adopt common-anode, and 8 pin of two 8 sections of LED charactrons connect+
5V voltage-stabilized power supply circuit simultaneously connects 26 pin of ATMEGA8 chip by resistance R25, diode D3,3 pin ground connection, 1,2,4,5,6,7,
9th, 10 pin connect the Q0-Q7 pin of two panels 74HC164 chip respectively, in Q0-Q7 pin and two 8 sections of LED numbers of two panels 74HC164 chip
Code indirect resistance R12, R20, R21, R22, R30, R31, R35, R36 and R2 of pipe 1,2,4,5,6,7,9,10 pin, R3, R4, R5,
R6、R7、R8、R9.
8. a kind of bearing ring demagnetizer according to claim 7 is it is characterised in that described CPU board signal wire socket
Circuit adopts the double socket circuit of 5 pins, 1,3 pin ground connection, and 2 pin connect 4 pin of ATMEGA8 chip, and 4 pin connect ATMEGA8 chip
16 pin, 5 pin connect zero cross detection circuit, and 6,7,8,9,10 pin connect+5V voltage-stabilized power supply circuit；Described power panel signal wire socket circuit
Using the double socket circuit of 5 pins, 2,4 pin ground connection, 1 pin connects 4 pin of ATMEGA8 chip, and 3 pin connect 16 pin of ATMEGA8 chip,
6 pin connect zero cross detection circuit, and 5,7,8,9,10 pin connect+5V voltage-stabilized power supply circuit.
9. a kind of bearing ring demagnetizer according to claim 8 is it is characterised in that described power panel signal wire socket
It is provided with sensor type between circuit and sensor interface circuitry and select wire jumper socket circuit；Letter on sensor interface circuitry
Number totally 3, line, respectively power supply, GND and switch signal line, switch signal line is followed by photoelectrical coupler U2's by electric capacity C7 filtering
1 pin, is connected to 4 pin of ATMEGA8 chip by photoelectrical coupler U2 output.
10. a kind of bearing ring demagnetizer according to claim 9 is it is characterised in that described ISP socket circuit adopts
The double socket circuit of 5 pins, 1,3,5,7 pin ground connection, 9 pin connect+5V voltage-stabilized power supply circuit, and 2 pin connect ATMEGA8 chip for MISO
18 pin MISO, 4 pin meet 19 pin SCK of ATMEGA8 chip for SCK, and 6 pin meet 1 pin RST of ATMEGA8 chip for RST, and 8 pin are empty
Connect, 10 pin meet 17 pin MOSI of ATMEGA8 chip for MOSI；
Described working condition display circuit adopts light emitting diode D1, and light emitting diode D1 positive pole is connected by resistance R14
16 pin PB2 of ATMEGA8 chip, light emitting diode D1 negative pole is grounded by resistance R37, and electric capacity C2, C3, C5, C14 bridge
Between+5V voltage-stabilized power supply circuit and ground wire；
Described keyboard circuit adopts two microswitches, and one end of two microswitches meets 12 pin PD6 of ATMEGA8 chip respectively
With 13 pin PD7, the other end connects+5V voltage-stabilized power supply circuit by resistance R19, R23 respectively；
Described zero cross detection circuit adopts LM324 chip, and 1 pin sky of LM324 chip connects, and 2 pin pass through resistance R26, R27 even respectively
+ 5V voltage-stabilized power supply circuit, ground connection, 3 pin, 5 pin respectively by resistance R28, R29 even+5V voltage-stabilized power supply circuit, ground connection, 4 pin connect+
5V voltage-stabilized power supply circuit, respectively by resistance R15, R32 even+5V voltage-stabilized power supply circuit, ground connection, 7 pin skies connect 6 pin, and 8 pin connect
5 pin of ATMEGA8 chip, 9 pin are grounded by light emitting diode D4, resistance R33 respectively and are connect 24V power supply electricity by resistance R34
Road, 10 pin are connect+5V voltage-stabilized power supply circuit by resistance R17 and are grounded by diode D12,11 pin ground connection, and 12 pin pass through resistance
R16 connects+5V voltage-stabilized power supply circuit, and 13 pin, 14 pin skies connect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786471.XA CN104538150B (en) | 2014-12-18 | 2014-12-18 | Bearing ring demagnetizing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410786471.XA CN104538150B (en) | 2014-12-18 | 2014-12-18 | Bearing ring demagnetizing device |
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| CN104538150B true CN104538150B (en) | 2017-02-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105938752B (en) * | 2016-07-05 | 2017-09-19 | 中国科学院上海天文台 | Hydrogen Atom Frequency Standard demagnetizer and demagnetizing method |
| CN112201431B (en) * | 2020-10-19 | 2022-02-11 | 洛阳轴承研究所有限公司 | Online demagnetization circuit of quick response bearing ring |
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| NL7900127A (en) * | 1979-01-08 | 1980-07-10 | Skf Ind Trading & Dev | Inductive heating and demagnetisation of roller bearing - is connected as sec. winding of transformer circuit with variable inductance in primary |
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| CN204375519U (en) * | 2014-12-18 | 2015-06-03 | 河南机电高等专科学校 | A kind of bearing ring demagnetizer |
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| US4617603A (en) * | 1985-02-27 | 1986-10-14 | Ixi Laboratories, Inc. | Degaussing system for bulk demagnetization of previously magnetized materials |
| US5959824A (en) * | 1998-03-25 | 1999-09-28 | Data Security, Inc. | Transient magnetic field degaussing system with auto calibration |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7900127A (en) * | 1979-01-08 | 1980-07-10 | Skf Ind Trading & Dev | Inductive heating and demagnetisation of roller bearing - is connected as sec. winding of transformer circuit with variable inductance in primary |
| CN1099214A (en) * | 1993-03-12 | 1995-02-22 | 法国汤姆森电视元件(公司) | The manufacture method of anti-magnetized coil and the coil that obtains of method thus |
| US7064948B2 (en) * | 2003-03-21 | 2006-06-20 | Data Security, Inc. | Electrical properties and uniformity of bulk degaussing coils |
| CN101383213A (en) * | 2007-09-05 | 2009-03-11 | 洛阳轴研科技股份有限公司 | Demagnetizing method and apparatus equally dividing and parallelly connecting multiple magnetic pole units of large sized bearing colar |
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| CN104538150A (en) | 2015-04-22 |
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