CN108466218A - Numerical control electric formula torque detects the detection method of spanner and bolt tightening torque value - Google Patents
Numerical control electric formula torque detects the detection method of spanner and bolt tightening torque value Download PDFInfo
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- CN108466218A CN108466218A CN201810196205.XA CN201810196205A CN108466218A CN 108466218 A CN108466218 A CN 108466218A CN 201810196205 A CN201810196205 A CN 201810196205A CN 108466218 A CN108466218 A CN 108466218A
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- 230000004069 differentiation Effects 0.000 claims description 4
- 230000005520 electrodynamics Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
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- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
A kind of numerical control electric formula torque detects the detection method of spanner and bolt tightening torque value.The spanner includes：Spanner motor；Power supply；Microcontroller is stored with the function transformation model of torque current voltage rotating speed；Current sensor, operating current signal for acquiring spanner motor simultaneously pass to microcontroller；Voltage sensor is used to acquire the voltage signal of power supply and passes to microcontroller；Speed probe, working speed signal for acquiring spanner motor simultaneously pass to microcontroller；Input module determines required range according to the tightening torque value magnitude range of tested bolt；Wherein, built-in control program in microcontroller, the operating current signal acquired, voltage signal and working speed signal are converted to corresponding current torque value by control program according to function transformation model, and by corresponding current torque value real-time display on display module, bolt tightening torque value is obtained when tested bolt starts to loosen, power supply is closed and stops being that spanner motor is powered.
Description
Technical field
The present invention relates to bolt tightening torque value detection field, more particularly to a kind of numerical control electric formula torque detection spanner and
The detection method of bolt tightening torque value.
Background technology
It is also higher and higher to the required precision of bolt tightening torque value with the development of high-grade, precision and advanced big equipment, to all spiral shells
Bolt defines the prefastening torque value of bolt, but whether the bolt for having fastened reaches fastening requirements and there is no both at home and abroad at present
Efficient accurate detection instrument.
It includes following several to be used for detecting the whether accurate torque detection method of bolt torque values both at home and abroad at present：
1, ultrasound screw bolt fastening force tester：It is according to Sound elasticity principle, it is proposed that using high-strength bolt axial stress and twists
The relationship of tight front and back ultrasonic time of flight difference, joint bolt material coefficient step up the parameters such as thickness, and indirect detection bolt is axial
The method of stress, but propagation time of the ultrasonic wave in bolt when must be known by unstressed, this brings difficulty to actual measurement fastening stress
Topic, especially influence of the influence of the practical factors such as bolt machining accuracy to bolt fastening stress ultrasonic measurement is also larger, through state
Inside and outside experiment, cannot be satisfied testing requirements.
2, method is tightened：Use torque spanner（Spanner containing electric twisting）It is steady firmly to gradually increase torque（Make sure to keep in mind to impact）, when
When nut or bolt just start to generate minor rotation, its instantaneous torque value is maximum（Because to overcome stiction）, it is rotated further,
Torque value will fall back to of short duration stable state, and torque value at this moment is to check obtained torque, and this requires operators
There must be skilled experience, the requirement to operator is high, and there are secondary fastening, and surveyed torque value precision depends on the warp of operator
Feeling is tested, can not ensure accuracy of detection.
3, labelling method（Also referred to as repositioning, method of scoring, angle method）：Detection is previously in detected bolt or nipple heads and quilt
Standardized diatom on connector, confirms mutual home position, then unclamps bolt or nut, with torque wrench by bolt
Or nut is tightened to home position（Line is wanted to be aligned at scribing line）, torque value at this moment is multiplied by with the obtained values of 0.9-1.1
Check that obtained torque, the method belong to secondary fastening, the influence because of first time fastening to gasket and bolt, accuracy of detection
It can not ensure.
4, intuition method：Flexible washer class is then seen whether to flatten to judge；To nonelastic coil class or flexible line
Difficulty is enclosed but observed, then torque spanner can be used and carry out tightening intuition to judge the degree of tightening, if arriving torque value, spanner does not turn
Dynamic or minor rotation, is judged to tighten, if rotating more than half-turn, is judged as not tightening, is unqualified, and the method is with feeling to sentence
It is disconnected, regular detection method can not be used as.
The process described above, that there are measurement accuracy is low, detection is cumbersome, efficiency is low and cannot be satisfied asking for testing requirements
Topic.
Invention content
In order to solve above-mentioned problem of the prior art, the present invention provides a kind of numerical control electric formula torque detection spanner, packet
It includes：
Spanner motor, the spanner motor band wrench output shaft are rotated with loose unloading tested bolt；
Power supply, the power supply is for supplying electricity to spanner motor；
Microcontroller is stored with the function transformation model of torque-current-voltage-rotating speed in the microcontroller；
Current sensor, the current sensor is electrically connected between the spanner motor and microcontroller, for acquiring spanner
The operating current signal of motor, and the operating current signal of acquisition is passed into microcontroller；
Voltage sensor, the voltage sensor are electrically connected between the power supply and microcontroller, the electricity for acquiring power supply
Signal is pressed, and the voltage signal of acquisition is passed into microcontroller；
Speed probe, the speed probe is electrically connected between the spanner motor and microcontroller, for acquiring spanner
The working speed signal of motor, and the working speed signal of acquisition is passed into microcontroller；
Input module, the input module determine required range according to the tightening torque value magnitude range of tested bolt；
Display module, the display module are used for the current torque value of real-time display tested bolt；
Wherein, the microcontroller respectively with current sensor, voltage sensor, speed probe, input module and display mould
Block is electrically connected, built-in control program in the microcontroller, the control program for according to the function transformation model by institute
Operating current signal, voltage signal and the working speed signal of acquisition are converted to corresponding current torque value, and work as corresponding
Preceding torque value real-time display until obtaining bolt tightening torque value when tested bolt starts to loosen, is closed on display module
It closes power supply and stops being that spanner motor is powered.
Further, the electrodynamic type torque detection spanner further includes mechanical switch, and the mechanical switch is connected on spanner
On the circuit of the power supply of motor, the normally opened contact of the mechanical switch is connected on microcontroller, when pressing mechanical switch, spanner electricity
The power supply of machine is connected, and the normally opened contact of the mechanical switch is closed and the signal that mechanical switch is pressed is passed to microcontroller, institute
It states microcontroller and starts metal-oxide-semiconductor circuit drives spanner motor non-impacting start from slow to fast.
Further, collected operating current signal is passed to microcontroller by the current sensor, and microcontroller is used for
Spanner motor is utilized to turn in the acting section of differentiation according to the current value size discrimination spanner motor acting section detected
Linear relationship between the decline and the torque of counter-force arm of speed calculates current torque value.
Further, the voltage signal of collected power supply is passed to microcontroller, the monolithic by the voltage sensor
Power difference of the machine needed for the voltage of power supply and the mathematic interpolation of rated voltage, to be carried out to the output torque of spanner motor
Power back-off.
Further, collected working speed signal is passed to microcontroller, the microcontroller by the speed probe
For according to the rotating speed of motor detected, and detected by numerical control electric formula torque spanner mechanical part variation constant with
And the decline of spanner motor speed and the torque linear relationship of reaction force calculate current torque value.
The present invention also provides a kind of detection methods of bolt tightening torque value comprising following steps：
Step S1：Input module determines required range according to the tightening torque value magnitude range of tested bolt；
Step S2：Start spanner motor, band wrench output shaft is rotated with loose unloading tested bolt；
Step S3：Current sensor, speed probe acquire the operating current signal and working speed signal of spanner motor respectively,
Voltage sensor acquires the voltage signal of power supply, and the operating current signal, voltage signal, working speed signal of acquisition are transmitted
To microcontroller；
Step S4：Control program built in microcontroller will be acquired according to the function transformation model of torque-current-voltage-rotating speed
Operating current signal, voltage signal and working speed signal be converted to corresponding current torque value, and by corresponding current torsion
Square value real-time display is on display module；
Step S5：Until obtaining bolt tightening torque value when tested bolt starts to loosen, closes power supply and stop being spanner electricity
Machine is powered.
Further, collected operating current signal is passed to microcontroller by the current sensor, and microcontroller is used for
Spanner motor is utilized to turn in the acting section of differentiation according to the current value size discrimination spanner motor acting section detected
Linear relationship between the decline and the torque of counter-force arm of speed calculates current torque value.
Further, the voltage sensor by the voltage signal of collected power supply pass to microcontroller, the list
Power difference of the piece machine needed for the voltage of power supply and the mathematic interpolation of rated voltage, with the output torque to spanner motor into
Row power back-off.
Further, collected working speed signal is passed to microcontroller, the microcontroller by the speed probe
For the rotating speed according to the spanner motor detected, and it is normal by the variation of the mechanical part of numerical control electric formula torque detection spanner
The decline of number and spanner motor speed and the torque linear relationship of reaction force calculate current torque value.
Beneficial effects of the present invention：
The present invention using multi objective as with the corresponding index parameter of output torque, i.e., in microcontroller in be stored with torque-electric current-
The control program of the function transformation model of voltage-rotating speed, microcontroller believes the operating current acquired according to function transformation model
Number, voltage signal, working speed signal be converted to corresponding current goal torque value, during this, current sensor, voltage
Sensor, speed probe acquire signal transmission to microcontroller, are calculated corresponding torque value, than simple electric current point
Amount control method stability is good, strong antijamming capability, meanwhile, this numerical control electric formula torque detection spanner also adds voltage compensation
Module improves the measurement accuracy of spanner output detection torque.
Description of the drawings
Fig. 1 is that the numerical control electric formula torque of the present invention detects the block diagram of spanner；
Fig. 2 is that the numerical control electric formula torque of the present invention detects the stepless detection block diagram of spanner；
Fig. 3 is the control block that the numerical control electric formula torque of the present invention detects the current sensor of spanner；
Fig. 4 is the control block that the numerical control electric formula torque of the present invention detects the speed probe of spanner；
Fig. 5 is the logic diagram of the detection method of the bolt tightening torque value of the present invention.
Reference sign
100 spanner motors
200 power supplys
300 microcontrollers
400 current sensors
500 voltage sensors
600 speed probes
700 input modules
800 display modules
900 mechanical switch.
Specific implementation mode
In order to have further understanding to technical scheme of the present invention and advantageous effect, attached drawing is coordinated to be described in detail below
Technical scheme of the present invention and its advantageous effect of generation.
The present invention a kind of numerical control electric formula torque detection spanner basic ideas be：It is pulled with the detection of numerical control electric formula torque
Hand applies torque to tested bolt, and detection spanner realizes torque Dynamic Announce, uses the method implementation with loose bolts, bolt pine
Detection spanner is stopped immediately after dynamic, reads instantaneous peak value when starting rotation, as detects torque value.
It is well known that general electric fixed-torque spanner is all made of current component control technology, but it can only realize torque
Thick mad formula stepping（It is corresponding）Control,（It is corresponding）Control accuracy is low, and cannot achieve steplessization of torque output.Its anti-interference ability
Difference, existing is typically to be shown using section switch-segment, thus the torque value of its display and actual torque value error are very big, no
The requirement of detection torque value precision can be met.
It is shown in Figure 2, the stepless detection block diagram of spanner is detected for the numerical control electric formula torque of the present invention, in view of upper
State problem, the purpose of the present invention is to provide it is a kind of can stepless output detection torque value, and can be used and multi objective（Electricity
Stream, voltage, rotating speed, inverse electromotive force）There are the numerical control electric formula torque detection spanner of correspondence, Novel torque of the invention inspection
Spanner is surveyed in addition to using current component corresponding data, increases and spanner electric moter voltage and rotary speed data is detected, and by electric current with
Functional relation between the fluctuation of rotating speed, and the new method that a kind of torque corresponds to relationship between index parameter is formed, in addition, each
Torque value measured by item index takes arithmetic mean of instantaneous value to show, in the inelastic region of spanner motor outputting torsion, can take interpolation
Algorithm is accomplished infinitely to detect torsion output accuracy of the spanner motor in overall output torque range can be substantially improved
Square value.
Further, the present invention due to using the decline of spanner motor speed and the torque of reaction force it is linear come
Control mode, and its linearity is fine, in the preferable working region of electric wrench, torque curve and speed curves function
Relationship it is linear very well, and its conversion constant substantially constant, thus can meet the requirement of control accuracy 1% to 3% is of the invention
Scheme, which can meet, infinitely detects torque value.
It is shown in Figure 1, the block diagram of spanner is detected for the numerical control electric formula torque of the present invention, the present invention provides a kind of
Numerical control electric formula torque detects spanner comprising spanner motor 100, power supply 200, microcontroller 300, current sensor 400, voltage
Sensor 500, speed probe 600, input module 700 and display module 800 below will carry out all parts detailed
Description.
The spanner motor 100 is rotated with wrench output shaft with loose unloading tested bolt；The power supply 200 is for supplying electricity to
Spanner motor 100, it is preferred that the power supply 200 is lithium battery, is had the advantages that with long service life.
The function transformation model of torque-current-voltage-rotating speed is stored in the microcontroller 300, it is preferred that the list
Piece machine 300 is 80C51 types, has the advantages that data acquisition and time are with high accuracy；The current sensor 400 is electrically connected at institute
It states between spanner motor 100 and microcontroller 300, the operating current signal for acquiring spanner motor 100, and by the work of acquisition
Current signal passes to microcontroller 300；The voltage sensor 500 be electrically connected at the power supply 200 and microcontroller 300 it
Between, the voltage signal for acquiring power supply 200, and the voltage signal of acquisition is passed into microcontroller 300；The speed probe
600 are electrically connected between the spanner motor 100 and microcontroller 300, and the working speed for acquiring spanner motor 100 is believed
Number, and the working speed signal of acquisition is passed into microcontroller 300.
The input module 700 determines required range according to the tightening torque value magnitude range of tested bolt, described aobvious
Show current tightening torque value of the module 800 for real-time display tested bolt, it is preferred that the input module 700 is shown with described
Show that module 800 is respectively liquid crystal input module and LCD MODULE, the shadow of the eyes not raying of operating personnel can be protected
It rings, while it is also smaller to consume energy.
Wherein, the microcontroller 300 respectively with current sensor 400, voltage sensor 500, speed probe 600, defeated
Enter module 700 and display module 800 is electrically connected, built-in control program in the microcontroller 300, the control program is used for
The operating current signal acquired, voltage signal and working speed signal be converted to according to the function transformation model corresponding
Current torque value, and by corresponding current torque value real-time display on display module 800, when tested bolt starts to loosen
Until obtaining bolt tightening torque value, closes power supply 200 and stop being that spanner motor 100 is powered.
It is shown in Figure 3, for the control block of the current sensor of the numerical control electric formula torque detection spanner of the present invention
Figure, wherein in the present embodiment, the collected operating current signal of institute is passed to microcontroller by the current sensor 400
300, the microcontroller 300 is used for the acting section according to the current value size discrimination spanner motor 100 detected, and is doing work
In section, current torque value is calculated using the linear relationship between the decline and the torque of counter-force arm of 100 rotating speed of spanner motor
（In order to enable spanner motor 100 to have larger operation interval, electric current norm controlling can be increased）, and it is current by what is calculated
Torque value real-time display is on display module 800.
Wherein, in the present embodiment, the voltage sensor 500 by collected power supply 200 voltage signal transmit
To microcontroller 300, power difference of the microcontroller 300 needed for the voltage of power supply 200 and the mathematic interpolation of rated voltage,
To carry out power back-off to the output torque of spanner motor 100.
It is shown in Figure 4, for the control block of the speed probe of the numerical control electric formula torque detection spanner of the present invention
Figure, wherein in the present embodiment, the collected working speed signal of institute is passed to microcontroller by the speed probe 600
300, the microcontroller 300 is used for the rotating speed according to the spanner motor 100 detected, and is pulled by the detection of numerical control electric formula torque
The decline of 100 rotating speed of variation constant and spanner motor of the mechanical part of hand and the torque linear relationship of reaction force calculate
Current torque value, and by the torque value real-time display calculated on display module 800.
Preferably, rotating speed time used that can be turned around with spanner motor 100 indicates, spanner motor 100 compared with
In good working region, torque curve is linear fine with speed curves functional relation, and its conversion constant substantially constant, Ye Jijing
Acting section is divided after current measurement, precision is completed by rotating speed.
Wherein, in the present embodiment, the numerical control electric formula torque detection spanner further includes mechanical switch 900, the machine
Tool switch 900 is connected on the circuit of the power supply of spanner motor 100, and the normally opened contact of the mechanical switch 900 is connected to monolithic
On machine 300, when pressing mechanical switch 900, the power supply of the spanner motor 100 is connected, the normally opened contact of the mechanical switch 900
It is closed and the signal that mechanical switch 900 is pressed is passed into microcontroller 300, the microcontroller 300 starts metal-oxide-semiconductor circuit drives and pulls
The non-impacting start from slow to fast of flashlight machine 100, furthermore, it is understood that 100 positive and negative rotation of circuit control spanner motor that metal-oxide-semiconductor is barricaded as,
To adjust metal-oxide-semiconductor pulse width realize detection torque value output.
In the present embodiment, preferably, numerical control electric formula torque detection spanner can also include sleeve, the sleeve
It is removably attachable on spanner output shaft, compares province so as to the extended length of output shaft can be made for loose unloading tested bolt
Power.
Shown in Figure 2, for the logic diagram of the detection method of the bolt tightening torque value of the present invention, the present invention also carries
For a kind of detection method of bolt tightening torque value comprising following steps：
Step S1：Input module 700 determines required range according to the tightening torque value magnitude range of tested bolt；
Step S2：Start spanner motor 100, band wrench output shaft is rotated with loose unloading tested bolt；
Step S3：Current sensor 400, speed probe 600 acquire operating current signal and the work of spanner motor 100 respectively
Tach signal, voltage sensor 500 acquire power supply 200 voltage signal, and by the operating current signal of acquisition, voltage signal,
Working speed signal passes to microcontroller 300；
Step S4：Control program built in microcontroller 300 is according to the function transformation model of torque-current-voltage-rotating speed, by institute
Operating current signal, voltage signal and the working speed signal of acquisition are converted to corresponding current torque value, and work as corresponding
Preceding torque value real-time display is on display module 800；
Step S5：Until obtaining bolt tightening torque value when tested bolt starts to loosen, closes power supply 200 and stop being spanner
Motor 100 is powered.
Above-mentioned detection method, it is preferred to use numerical control electric formula torque detection spanner shown in FIG. 1 carries out.
In conclusion the present invention reached have the beneficial effect that：
The present invention using multi objective as with the corresponding index parameter of output torque, i.e., in microcontroller in be stored with torque-electric current-
The control program of the function transformation model of voltage-rotating speed, microcontroller believes the operating current acquired according to function transformation model
Number, voltage signal, working speed signal be converted to corresponding current goal torque value, during this, current sensor, voltage
Sensor, speed probe acquire signal transmission to microcontroller, are calculated corresponding torque value, than simple electric current point
Amount control method stability is good, strong antijamming capability, meanwhile, this numerical control electric formula torque detection spanner also adds voltage compensation
Module improves the measurement accuracy of spanner output detection torque.
Although the present invention is illustrated using above-mentioned preferred embodiment, the protection model that however, it is not to limit the invention
It encloses, any those skilled in the art are not departing within the spirit and scope of the present invention, and opposite above-described embodiment carries out various changes
It is dynamic still to belong to the range that the present invention is protected with modification, therefore protection scope of the present invention is subject to what claims were defined.
Claims (9)
1. a kind of numerical control electric formula torque detects spanner, which is characterized in that including：
Spanner motor, the spanner motor band wrench output shaft are rotated with loose unloading tested bolt；
Power supply, the power supply is for supplying electricity to spanner motor；
Microcontroller is stored with the function transformation model of torque-current-voltage-rotating speed in the microcontroller；
Current sensor, the current sensor is electrically connected between the spanner motor and microcontroller, for acquiring spanner
The operating current signal of motor, and the operating current signal of acquisition is passed into microcontroller；
Voltage sensor, the voltage sensor are electrically connected between the power supply and microcontroller, the electricity for acquiring power supply
Signal is pressed, and the voltage signal of acquisition is passed into microcontroller；
Speed probe, the speed probe is electrically connected between the spanner motor and microcontroller, for acquiring spanner
The working speed signal of motor, and the working speed signal of acquisition is passed into microcontroller；
Input module, the input module determine required range according to the tightening torque value magnitude range of tested bolt；
Display module, the display module are used for the current torque value of real-time display tested bolt；
Wherein, the microcontroller respectively with current sensor, voltage sensor, speed probe, input module and display mould
Block is electrically connected, built-in control program in the microcontroller, the control program for according to the function transformation model by institute
Operating current signal, voltage signal and the working speed signal of acquisition are converted to corresponding current torque value, and work as corresponding
Preceding torque value real-time display until obtaining bolt tightening torque value when tested bolt starts to loosen, is closed on display module
It closes power supply and stops being that spanner motor is powered.
2. numerical control electric formula torque as described in claim 1 detects spanner, which is characterized in that the numerical control electric formula torque inspection
It further includes mechanical switch to survey spanner, and the mechanical switch is connected on the circuit of the power supply of spanner motor, the mechanical switch
Normally opened contact is connected on microcontroller, and when pressing mechanical switch, the power supply of spanner motor is connected, and the normally opened of the mechanical switch touches
Point is closed and the signal that mechanical switch is pressed is passed to microcontroller, and the microcontroller starts metal-oxide-semiconductor circuit drives spanner motor
Non-impacting start from slow to fast.
3. numerical control electric formula torque as described in claim 1 detects spanner, which is characterized in that the current sensor will acquire
To operating current signal pass to microcontroller, microcontroller is used for according to the current value size discrimination spanner motor acting detected
Section, in the acting section of differentiation, using the linear relationship between the decline of spanner motor speed and the torque of counter-force arm come
Calculate current torque value.
4. numerical control electric formula torque as described in claim 1 detects spanner, which is characterized in that the voltage sensor will acquire
To the voltage signal of power supply pass to microcontroller, the microcontroller is according to the voltage of power supply and the mathematic interpolation institute of rated voltage
The power difference needed, to carry out power back-off to the output torque of spanner motor.
5. numerical control electric formula torque as described in claim 1 detects spanner, which is characterized in that the speed probe will acquire
To working speed signal pass to microcontroller, the microcontroller is used for the rotating speed according to the motor detected, and passes through numerical control
The variation constant of the mechanical part of electrodynamic type torque detection spanner and the decline of spanner motor speed and the torque of reaction force
Linear relationship calculates current torque value.
6. a kind of detection method of bolt tightening torque value, which is characterized in that include the following steps：
Step S1：Input module determines required range according to the tightening torque value magnitude range of tested bolt；
Step S2：Start spanner motor, band wrench output shaft is rotated with loose unloading tested bolt；
Step S3：Current sensor, speed probe acquire the operating current signal and working speed signal of spanner motor respectively,
Voltage sensor acquires the voltage signal of power supply, and the operating current signal, voltage signal, working speed signal of acquisition are transmitted
To microcontroller；
Step S4：Control program built in microcontroller will be acquired according to the function transformation model of torque-current-voltage-rotating speed
Operating current signal, voltage signal and working speed signal be converted to corresponding current torque value, and by corresponding current torsion
Square value real-time display is on display module；
Step S5：Until obtaining bolt tightening torque value when tested bolt starts to loosen, closes power supply and stop being spanner electricity
Machine is powered.
7. the detection method of bolt tightening torque value as claimed in claim 6, which is characterized in that the current sensor is by institute
Collected operating current signal passes to microcontroller, and microcontroller is used for according to the current value size discrimination spanner motor detected
Acting section utilizes the linear pass between the decline of spanner motor speed and the torque of counter-force arm in the acting section of differentiation
It is to calculate current torque value.
8. the detection method of bolt tightening torque value as claimed in claim 6, which is characterized in that the voltage sensor is by institute
The voltage signal of collected power supply passes to microcontroller, and the microcontroller is according to the voltage of power supply and the difference meter of rated voltage
Power difference needed for calculating, to carry out power back-off to the output torque of spanner motor.
9. the detection method of bolt tightening torque value as claimed in claim 6, which is characterized in that the speed probe is by institute
Collected working speed signal passes to microcontroller, and the microcontroller is used for the rotating speed according to the spanner motor detected, and
Variation constant and the decline and reaction of spanner motor speed of the mechanical part of spanner are detected by numerical control electric formula torque
The torque linear relationship of power calculates current torque value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810196205.XA CN108466218A (en) | 2018-03-09 | 2018-03-09 | Numerical control electric formula torque detects the detection method of spanner and bolt tightening torque value |
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| CN201810196205.XA CN108466218A (en) | 2018-03-09 | 2018-03-09 | Numerical control electric formula torque detects the detection method of spanner and bolt tightening torque value |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024147A (en) * | 2019-12-26 | 2020-04-17 | 玳能科技(杭州)有限公司 | Component mounting detection method and device based on CNNs, electronic equipment and storage medium |
| CN111633600A (en) * | 2020-05-12 | 2020-09-08 | 深圳市威富智能设备有限公司 | Electric screwdriver and control method thereof |
| CN111922967A (en) * | 2020-08-05 | 2020-11-13 | 孟易鸿 | Digital display electric fixed torque wrench control device, wrench and method |
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| CN115356035A (en) * | 2022-10-20 | 2022-11-18 | 华东交通大学 | Bolt tightening torque detection system and detection method |
| CN117224265A (en) * | 2023-09-05 | 2023-12-15 | 中山大学附属口腔医院 | Method and device for detecting stability of implant denture screw |
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| CN111922967A (en) * | 2020-08-05 | 2020-11-13 | 孟易鸿 | Digital display electric fixed torque wrench control device, wrench and method |
| CN111922967B (en) * | 2020-08-05 | 2021-10-22 | 山东中兴电动工具有限公司 | Digital display electric fixed torque wrench control device, wrench and method |
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| CN115227435A (en) * | 2022-07-12 | 2022-10-25 | 佛山市津上医疗科技有限公司 | Dental electric torque system, device and method |
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| CN115213847A (en) * | 2022-08-10 | 2022-10-21 | 江苏东成工具科技有限公司 | Torque control method, torque control equipment and computer readable medium |
| CN115213847B (en) * | 2022-08-10 | 2024-05-24 | 江苏东成工具科技有限公司 | Torque control method, torque control device and computer readable medium |
| CN115356035A (en) * | 2022-10-20 | 2022-11-18 | 华东交通大学 | Bolt tightening torque detection system and detection method |
| CN115356035B (en) * | 2022-10-20 | 2023-02-07 | 华东交通大学 | Bolt tightening torque detection system and detection method |
| CN117224265A (en) * | 2023-09-05 | 2023-12-15 | 中山大学附属口腔医院 | Method and device for detecting stability of implant denture screw |
| CN117224265B (en) * | 2023-09-05 | 2024-05-17 | 中山大学附属口腔医院 | Method and device for detecting stability of implant denture screw |
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