CN108544416A - A kind of brushless servo electric screw driver - Google Patents
A kind of brushless servo electric screw driver Download PDFInfo
- Publication number
- CN108544416A CN108544416A CN201810759945.XA CN201810759945A CN108544416A CN 108544416 A CN108544416 A CN 108544416A CN 201810759945 A CN201810759945 A CN 201810759945A CN 108544416 A CN108544416 A CN 108544416A
- Authority
- CN
- China
- Prior art keywords
- port
- screw driver
- electric screw
- resistor
- brushless servo
- 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
Links
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
Abstract
The present invention relates to a kind of brushless servo electric screw drivers, including electric screw driver and brushless servo electric screw driver controller, electric wire connects between the electric screw driver and brushless servo electric screw driver controller, and the both ends of electric wire are that aviation plugs connector, aviation plug connector connects electric screw driver and brushless servo electric screw driver controller respectively, platinum resistance elements are equipped in the electric screw driver, there is torque compensation circuit in brushless servo electric screw driver controller, platinum resistance elements are electrically connected with torque compensation circuit, pass through the temperature resistance characteristic of platinum resistance elements, the operating current of motor is compensated, to realize the compensation to motor operation torque.
Description
Technical field
The present invention relates to a kind of electric screw driver more particularly to a kind of brushless servo electric screw drivers.
Background technology
Electric screw driver is used to tighten and unscrew the electric tool of screw, is mainly used on assembly line, improves work effect
While rate, save strength, the electric screw driver working time is long, in the prior art, motor during the work time, with the time
Passage, motor internal coil windings temperature can be gradually increasing, and operating current is bigger, and winding heating is faster, and winding temperature increases,
Impedance increases, and electric screw driver torque can decline, and electric screw driver increases torque by electromagnetic clutch type at present, complicated,
Precision is relatively low, and maintenance cost is high.
Invention content
The present invention is exactly in view of the deficienciess of the prior art, provide a kind of brushless servo electric screw driver.
To solve the above problems, the technical solution used in the present invention is as follows：
A kind of brushless servo electric screw driver, including electric screw driver and brushless servo electric screw driver controller, it is described
Electric wire connects between electric screw driver and brushless servo electric screw driver controller, and the both ends of electric wire are connection-peg, connection-peg
Grafting electric screw driver and brushless servo electric screw driver controller respectively, the electric screw driver is interior to be equipped with platinum resistance member
Part, brushless servo electric screw driver is interior to be equipped with torque compensation circuit, and platinum resistance elements are electrically connected with torque compensation circuit, institute
State torque compensation circuit, including amplifier, power supply, first resistor, second resistance, 3rd resistor, thermistor, capacitor, volume
Process control unit and output end, the amplifier are semiconductor element, and amplifier is equipped with eight ports, first port and the 4th end
Mouth electrically connects, and second port, thermistor, first resistor, power end, which are sequentially connected in series, to be electrically connected, and third port is connected to temperature-sensitive electricity
Between resistance and first resistor, fifth port is electrically connected with second resistance one end, and the 6th port is electrically connected with 3rd resistor one end, the
The two resistance other ends electrically connect between the 6th port and 3rd resistor, and the 7th port is electrically connected with output end, and 3rd resistor is another
One end electrically connects between the 7th port and output end, and tie point electrically connects programming Control unit, the 8th port and power supply electricity
Connection, wherein the first, second resistance constitutes feedback circuit in the same direction.
Further, the programming Control unit includes AD sample circuits, and programming Control unit and motor driver are electric
Connection.
Further, it is grounded respectively between the first port and the 4th port, second port and thermistor.
Further, reference potential is connected between fifth port and second resistance.
Further, it is connected with capacitor between the 8th port and power supply, capacitor connects electricity.
Further, the screwdriver includes shell, and connected motor and output main shaft are equipped in shell, exports main shaft
One end is stretched out outside shell and is connected with batch nozzle, and the platinum resistance elements are mounted on motor case surface.
Compared with prior art, implementation result of the invention is as follows by the present invention：
The present invention compensates the electric current in circuit by the temperature resistance characteristic of platinum resistance elements, to realize
Under constant voltage, the compensation to motor operation torque ensures the stability of motor work.
Description of the drawings
Fig. 1 is structure of the invention；
Fig. 2 is a kind of brushless electric screwdriver sectional structure chart of the present invention.
Fig. 3 is a kind of brushless electric screwdriver torque compensation electrical block diagram of the present invention；
Specific implementation mode
Illustrate present disclosure below in conjunction with specific embodiments.
As shown in Figure 1, Figure 2 and Figure 3, a kind of brushless servo electric screw driver, including electric screw driver 100 and brushless servo
Electric screw driver controller 200, electric wire connects between the electric screw driver 100 and brushless servo electric screw driver controller 200
It connects, and the both ends of electric wire are connection-peg, connection-peg distinguishes grafting electric screw driver 100 and brushless servo electric screw driver controller
200, the electric screw driver is interior to be equipped with platinum resistance elements 101, and platinum resistance elements 101 are thermistor, brushless servo electricity
It is equipped with torque compensation circuit 201 in dynamic screw driver controller 200, platinum resistance elements 101 electrically connect with torque compensation circuit 201
It connects, the torque compensation circuit 201, including amplifier 202, power supply 203, first resistor 204, second resistance 205,3rd resistor
206, platinum resistance elements 101, programming Control unit 207 and output end 208, the amplifier 202 are semiconductor element, amplification
Device 202 is equipped with eight ports, and first port is electrically connected with the 4th port, second port, platinum resistance elements 101, first resistor
204,203 end of power supply, which is sequentially connected in series, electrically connects, and third port is connected between platinum resistance elements 101 and first resistor 204, the
Five ports are electrically connected with 205 one end of second resistance, and the 6th port is electrically connected with 206 one end of 3rd resistor, and second resistance 205 is another
End electrically connects between the 6th port and 3rd resistor 206, and the 7th port is electrically connected with output end 208, and 3rd resistor 206 is another
End electrically connects between the 7th port and output end 208, and tie point electrically connects programming Control unit 207, the 8th port and electricity
Source 203 electrically connects.The programming Control unit 207 includes AD sample circuits, and programming Control unit 207 and motor driver are electric
Connection.It is grounded respectively between the first port and the 4th port, second port and platinum resistance elements 101.Fifth port with
It is connected with reference potential between second resistance 205.It is connected with capacitor 209, capacitor between 8th port and power supply 203
209 connect electricity.The electric screw driver 100 includes shell 102, and connected motor 103 and output main shaft are equipped in shell 102
104,104 one end of output main shaft is stretched out outside shell 102 and is connected with batch nozzle 105, and the platinum resistance elements 101 are mounted on electronic
Casing surface.
It is a certain motor model winding temperature and the torque table of comparisons as shown in the table：
This circuit is amplified sampled voltage using single-stage scale operation amplifying circuit, the multiple A=1+R of amplification3/R2
=11, output voltage VOUT=-Vin* A+Vref, (VinFor sampled voltage, VrefOn the basis of voltage) as long as therefore thermistor hinder
Value has small variation, output that will have a greater change, and can be calculated electricity eventually by the AD samplings of programming Control unit
The real-time temperature change of machine.
The present embodiment uses the A grades platinum resistance elements 101 of typical coefficient TCR=0.003851, platinum resistance elements 101
Temperature-resistance characteristic：RT=R0[1+aT+bT2-cT3(T-100)]
RTFor temperature T when resistance value, resistance value when R0 is 0 DEG C of temperature, a, b, c coefficients are
| Temperature | a | b | c |
| T<0 | 3.90802×10-3 | 5.80195×10-7 | 4.27351×10-12 |
| T≥0 | 3.90802×10-3 | 5.80195×10-7 | 0 |
According to above-mentioned formula can approximation obtain out RT=R0(1+aT), R0=100 Ω, can be calculated in conjunction with circuit design
Motor real time temperature
Be as shown in the table torque after torque compensation and the temperature table of comparisons, motor driver can according to collected motor around
The variation of group temperature controls the electric current of motor using pid algorithm, to reach compensation torque purpose.
Torque compensation is realized by controlling electric current, so practical to the compensation of torque is exactly the compensation to electric current,
Therefore the correspondence of current compensation and motor temperature can be substantially formulated,
CElectric current=(T-TC) * k+c, wherein k is coefficient, and c is constant, and T is motor temperature, TCFor room temperature (working environment temperature
Degree).These parameters are not invariable, can be changed with the variation of motor temperature and the of different sizes of setting torque.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (6)
1. a kind of brushless servo electric screw driver, including electric screw driver and brushless servo electric screw driver controller, feature
It is that electric wire connects between the electric screw driver and brushless servo electric screw driver controller, and the both ends of electric wire are inserted for aviation
Connector is pulled out, aviation plugs connector difference grafting electric screw driver and brushless servo electric screw driver controller, the electric screw
It is equipped with platinum resistance elements in knife, torque compensation circuit, platinum resistance elements and torque are equipped in brushless servo electric screw driver
Compensation circuit be electrically connected, the torque compensation circuit, including amplifier, power supply, first resistor, second resistance, 3rd resistor,
Thermistor, capacitor, programming Control unit and output end, the amplifier are semiconductor element, and amplifier is equipped with eight ends
Mouthful, first port is electrically connected with the 4th port, and second port, thermistor, first resistor, power end, which are sequentially connected in series, to be electrically connected,
Third port is connected between thermistor and first resistor, and fifth port is electrically connected with second resistance one end, the 6th port with
3rd resistor one end electrically connects, and the second resistance other end electrically connects between the 6th port and 3rd resistor, the 7th port with it is defeated
Outlet electrically connects, and the 3rd resistor other end electrically connects between the 7th port and output end, and tie point electrically connects programming Control
Unit, the 8th port are electrically connected with power supply.
2. a kind of brushless servo electric screw driver according to claim 1, characterized in that the programming Control unit includes
AD sample circuits, and programming Control unit is electrically connected with motor driver.
3. a kind of brushless electric screwdriver torque compensation circuit according to claim 1, characterized in that the first port
It is grounded respectively between the 4th port, second port and thermistor.
4. a kind of brushless electric screwdriver torque compensation circuit according to claim 1, characterized in that fifth port and the
It is connected with reference potential between two resistance.
5. a kind of brushless electric screwdriver torque compensation circuit according to claim 1, characterized in that the 8th port
Capacitor is connected between power supply, capacitor connects electricity.
6. a kind of brushless electric screwdriver torque compensation circuit according to claim 1, characterized in that the screwdriver packet
Shell is included, the motor being connected and output main shaft are equipped in shell, output main shaft one end is stretched out outside shell and is connected with batch nozzle, institute
It states platinum resistance elements and is mounted on motor case surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810759945.XA CN108544416B (en) | 2018-07-11 | 2018-07-11 | Brushless servo electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810759945.XA CN108544416B (en) | 2018-07-11 | 2018-07-11 | Brushless servo electric screwdriver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108544416A true CN108544416A (en) | 2018-09-18 |
| CN108544416B CN108544416B (en) | 2024-04-02 |
Family
ID=63492279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810759945.XA Active CN108544416B (en) | 2018-07-11 | 2018-07-11 | Brushless servo electric screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108544416B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB918666A (en) * | 1960-04-20 | 1963-02-13 | Welwyn Electric Ltd | Improvements in electrical resistors |
| DE1703316A1 (en) * | 1968-05-02 | 1972-03-09 | Pressluftwerkzeug U Maschb Pre | Screwdrivers |
| CN103107756A (en) * | 2011-11-14 | 2013-05-15 | 三星电子株式会社 | Apparatus and method for controlling stepping motor |
| CN103386666A (en) * | 2012-05-11 | 2013-11-13 | 数泓科技股份有限公司 | Electronic type torque wrench provided with automatic compensation device of output torsion |
| CN204627582U (en) * | 2015-04-10 | 2015-09-09 | 西安思坦仪器股份有限公司 | Memory-type tubing string axial tension, torsiograph |
| CN105415312A (en) * | 2015-10-30 | 2016-03-23 | 华中科技大学 | Circuit board clamping table and temperature measurement system |
| CN107390760A (en) * | 2017-07-25 | 2017-11-24 | 西安电子科技大学 | For the integrated circuit with temperature-compensating |
| CN208867074U (en) * | 2018-07-11 | 2019-05-17 | 东莞市速动电子科技有限公司 | A kind of brushless servo electric screw driver |
-
2018
- 2018-07-11 CN CN201810759945.XA patent/CN108544416B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB918666A (en) * | 1960-04-20 | 1963-02-13 | Welwyn Electric Ltd | Improvements in electrical resistors |
| DE1703316A1 (en) * | 1968-05-02 | 1972-03-09 | Pressluftwerkzeug U Maschb Pre | Screwdrivers |
| CN103107756A (en) * | 2011-11-14 | 2013-05-15 | 三星电子株式会社 | Apparatus and method for controlling stepping motor |
| CN103386666A (en) * | 2012-05-11 | 2013-11-13 | 数泓科技股份有限公司 | Electronic type torque wrench provided with automatic compensation device of output torsion |
| CN204627582U (en) * | 2015-04-10 | 2015-09-09 | 西安思坦仪器股份有限公司 | Memory-type tubing string axial tension, torsiograph |
| CN105415312A (en) * | 2015-10-30 | 2016-03-23 | 华中科技大学 | Circuit board clamping table and temperature measurement system |
| CN107390760A (en) * | 2017-07-25 | 2017-11-24 | 西安电子科技大学 | For the integrated circuit with temperature-compensating |
| CN208867074U (en) * | 2018-07-11 | 2019-05-17 | 东莞市速动电子科技有限公司 | A kind of brushless servo electric screw driver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108544416B (en) | 2024-04-02 |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: Room 1601, Building 1, No. 5, Keji Second Road, Songshanhu Park, Dongguan, Guangdong 523000 Applicant after: Quick acting intelligent tightening technology (Guangdong) Co.,Ltd. Address before: No. 19, Southwest 1st Lane, Qiaochang Road, Dazhou Community, Qiaotou Town, Dongguan City, Guangdong Province, 523000 Applicant before: DONGGUAN SUDONG ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region before: China |
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| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |