CN107024943A - The torsion control method and its torsion control system of Pneumatic impact dynamic torque tool - Google Patents
The torsion control method and its torsion control system of Pneumatic impact dynamic torque tool Download PDFInfo
- Publication number
- CN107024943A CN107024943A CN201610072863.9A CN201610072863A CN107024943A CN 107024943 A CN107024943 A CN 107024943A CN 201610072863 A CN201610072863 A CN 201610072863A CN 107024943 A CN107024943 A CN 107024943A
- Authority
- CN
- China
- Prior art keywords
- air pressure
- torsion
- value
- torque
- locking
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D15/00—Control of mechanical force or stress; Control of mechanical pressure
- G05D15/01—Control of mechanical force or stress; Control of mechanical pressure characterised by the use of electric means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention discloses the torsion control method and its torsion control system of a kind of Pneumatic impact dynamic torque tool.Method is：Shock sensor is set on Pneumatic impact dynamic torque tool, and in its end socket torsion torque sensor of exerting oneself；The instrument is driven with first, second operating air pressure, to carry out verification operation, to obtain first, second torque value and first, second shock value simultaneously；The corresponding relation curve of air pressure and moment of torsion is set up according to obtained operating air pressure and torque value；Meanwhile, the corresponding relation curve of air pressure and vibration frequency is set up according to operating air pressure and shock value；Target torque value is inputted between first and second torque value and can obtain corresponding operating air pressure, and drives the instrument to carry out locking operation according to this；The situation of torsion torque sensor is being removed, still can also done the monitoring of loop circuit according to above-mentioned two relation curves, the shock value sensed only in accordance with shock sensor in the starting for locking operation into terminal procedure, judge whether locking result meets target torque value.
Description
Technical field
The invention relates to a kind of torsion control method of pneumatic torque instrument and its control system, especially
It is the pneumatic torque instrument for impact type or pulsed, utilizes a torsion torque sensor TTD (Torque
Transducer) with a shock sensor BD (BPM Detector) in verification synchronously the gas set up
Pressure and outputting torsion and the corresponding relation curve of shock value, to reach the torsion control of accurate control targe torsion
Method and its control system processed.
Background technology
Present inventor had previously had pointed out patent application " torsion control method and its torque controlling device "
(Application No. 201410371437.6), it can make pneumatic torque instrument accurately attain the mesh that torsion is controlled
's.However, present inventor still constantly chases after according to the experience for being engaged in torsion control product for many years
Torsion is asked to control the improvement of product, the present inventors considered that above-mentioned patent application, still can be using others
Apparatus and method to reach that more accurate torsion is controlled, and can greatly improve user using upper elasticity with just
Profit.The torsion torque sensor that the present inventor's thinking is used using aforementioned patent applications, though can be accurate
The purpose for reaching torsion control, but manufacturing cost is high, is particularly applied to the pneumatic torque of impact type
Instrument, because bearing violent impact endurance test shock, the problem of also having service life, furthermore, because that must install
At the end of exerting oneself of dynamic torque tool, it often because of the limitation of operating space, and can not use, cause very big inconvenience.
The content of the invention
The present invention provides a kind of torsion control method and its torsion control system applied to pneumatic torque instrument,
Especially the torsion control of the pneumatic torque instrument of impact type, aforementioned patent Shen is promoted to further improve
Accuracy and overcome aforementioned patent applications that torsion please is controlled, are limited and nothing when using by operating space
The problem of method uses torsion torque sensor, to promote the elasticity and convenience in operation.
According to the purpose of the present invention there is provided a kind of torsion control method, the gas of impact type is particularly applied to
The locking operation of dynamic dynamic torque tool.Torsion control method is comprised the steps of：One shock sensor is set extremely
On the pneumatic torque instrument of impact type；Pneumatic circuit is connected to torque controlling device from baric systerm, with defeated
Go out stable operating air pressure to the pneumatic torque instrument of impact type, and locking operation starting to terminating
Cheng Zhong, whether monitoring work air pressure is in default permission range of variation；Before locking, for what is used
Fastener first carries out the verification operation of outputting torsion using a torsion torque sensor with treating locking part, according to gas
Dynamic dynamic torque tool can normal operating the first operating air pressure and corresponding first torque value and the second operating air pressure
And corresponding second torque value sets up the corresponding relation curve of an air pressure and moment of torsion；Wherein the first operating air pressure
It is not equal to the second operating air pressure；Meanwhile, pneumatic dynamic torque tool is driven with the first operating air pressure according to corresponding to
When the first vibration frequency value for sensing and sense when driving pneumatic dynamic torque tool corresponding to the second operating air pressure
Second vibration frequency value, to set up the corresponding relation curve of an air pressure and vibration frequency value；Input is between the
Either objective torque value between one torque value and the second torque value, according to air pressure and the corresponding relation of moment of torsion
Curve, to obtain corresponding operating air pressure, and drives pneumatic dynamic torque tool to be locked with the operating air pressure
Gu operation；Meanwhile, according to air pressure and the corresponding relation curve of vibration frequency, judge to drive with the operating air pressure
When dynamic dynamic torque tool of taking offence carries out locking operation, whether the vibration frequency value that shock sensor is sensed meets
Target torque value.In this way, carrying out the control of the pneumatic torque instrument outputting torsion of impact type with three kinds of parameters
System, makes result more accurate reliable.
During operation, Pneumatic impact dynamic torque tool can in above-mentioned two corresponding relation curves foundation after the completion of,
Torsion torque sensor is removed, and is only sensed by the shock sensor being attached on Pneumatic impact dynamic torque tool
To vibration frequency value and be stored in two corresponding relation curves of torque controlling device, only according to operation vibration
Frequency values and air pressure and the corresponding relation curve of vibration frequency value, so that it may in the whole mistakes of locking operation starting
Journey, does the monitoring of loop circuit, according to the shock value sensed, judge locking result whether with target torque
Value is consistent.
It is preferred that the torsion control method can be comprised the steps of；Utilize the gas for being equiped with shock sensor
Dynamic impact type dynamic torque tool, before locking, the fastener for using utilizes a torsion with treating locking part
Sensor first carries out the verification operation of outputting torsion.By the microprocessor in torque controlling device with formula
An air pressure automatic pressure regulating device is controlled, the time required to setting the locking operation, the second operating air pressure is progressively carried
Rise to the first operating air pressure or the first operating air pressure is progressively downgraded into the second operating air pressure, in checking procedure
In, while the sensing value of air pressure and moment of torsion and air pressure and vibration frequency is recorded, it is mutually right to set up respectively
The relation curve answered simultaneously is stored in torque controlling device, makes the process of setting more easy.
According to the above-mentioned air pressure for being stored in torque controlling device and torsion and shock value, built after verification
Vertical relation curve, also can be optionally plus locking operation required time or according to torsion torque sensor when operation
The fastener detected is locked to the parameters such as the anglec of rotation that starts to count when being attached to working face, passes through torsion control
Device processed does more accurate torsion control.
It is preferred that this method can more be comprised the steps of：With the operating air pressure driving of correspondence target torque value
Pneumatic torque instrument, to be locked；Judge whether according to the strain value that a torsion torque sensor is sensed
Up to target torque value, to judge that whether qualified the locking operation is.
It is preferred that this method can more be comprised the steps of：With the operating air pressure driving of correspondence target torque value
Pneumatic torque instrument, to be locked；The strain value that only senses according to a torsion torque sensor judges to be
It is no to reach target torque value, and according to the device for automatically adjusting pressure in the program control torque controlling device of setting,
Air pressure is progressively heightened when being locked to target torque value in adjustable extent, cut-out supply.Such as through automatic
When pressure regulation is still unable to reach target torque value, then propose to warn with sound or light, while with word or symbol
Number display is unqualified.
It is preferred that when carrying out locking operation, this method can more be comprised the steps of；Made according to the locking
The industry whole required time；And the torsion sensing value and vibration-sensing sensed according to a torsion torque sensor
The shock value of device sensing judges；When the locking operation reaches target torque value, if be in predetermined locking
In the range of time and corresponding sense shock value, to judge that whether qualified the locking operation is.
It is preferred that pneumatic torque instrument is using a torsion torque sensor and its a built-in angular transducer,
This method can more be comprised the steps of：Twist value is sensed using torsion torque sensor, and it is tight when sensing
During the twist value of firmware veneer, angular transducer starts to calculate the anglec of rotation and judgement；The locking is made
Whether industry is when reaching target torque value, while reaching in predetermined locking angular range, to judge to be somebody's turn to do
Whether qualified the operation that locks is.
It is preferred that pneumatic torque instrument is using a torsion torque sensor and its a built-in angular transducer,
This method can more be comprised the steps of：Time according to needed for the locking complete operation；Sensed using torsion
Device senses twist value, and when sensing the twist value of fastener veneer, angular transducer is opened
Begin to calculate the anglec of rotation；And the locking operation is judged when reaching target torque value, locking time and locking
Whether angle is in predetermined scope, to judge that whether qualified the locking operation is.
The torsion control method of the present invention is according to the time needed for the locking complete operation of acquiescence, target torque
The united application of the anglec of rotation after value, vibratory sensation measured value, fastener veneer etc., and visual pneumatic torque
Pattern, the characteristic of instrument, such as：Clutch type, planetary gear speed-reduction static(al) formula (Torque Multiplier),
Oil pulse formula or impact type and the specification of various locking operations；Such as：Torsion mode, time+torsion
Force mode, angle+torsion mode or time+torsion+angle mode etc., can all control to join according to program setting
Number, the priority of parameter decision and accuracy rating etc. of control, make that application is wider, turn round control precision with
Reliability is more improved.
According to the purpose of the present invention there is provided a kind of torsion control system, its connect an air pressure air supply system,
One torque controlling device, a pneumatic torque instrument and a torsion torque sensor.Shock sensor is arranged on pneumatic
On dynamic torque tool.Then elasticity is installed in pneumatic torque instrument and exerted oneself the axis at end torsion torque sensor.Torsion control
Device processed is included：Admission pressure monitoring module, air pressure adjustment module, magnetic valve, mnemon and Wei Chu
Manage device.The control of admission pressure monitoring module enters the air pressure of torque controlling device from baric systerm, together
When air inlet beyond torque controlling device set the atmospheric pressure upper limit when propose warning.Air pressure adjustment module
Adjust the output to an operating air pressure of pneumatic torque instrument, air pressure adjustment module is according to the instruction of program setting
The height of operating air pressure is adjusted in automatic or manual mode；Magnetic valve is shut on or off output to pneumatic torque
The pneumatic supply of instrument；Mnemon stores the pneumatic torque work before each control parameter and formal locking operation
Tool to same specification, the fastener of type and can treat that locking part is distinguished in the air pressure range of steady operation
Torsion torque sensor is driven to obtain difference corresponding first to verify with the first operating air pressure and the second operating air pressure
Torque value and the second torque value, and the corresponding first vibration frequency value that senses of shock sensor and the
Two vibration frequency values, wherein the first operating air pressure is not equal to the second operating air pressure；Microprocessor is according to first
Operating air pressure, the second operating air pressure, the first torque value and the second torque value, set up an air pressure and moment of torsion
Corresponding relation curve, and according to the first operating air pressure and the second operating air pressure and corresponding first vibrations frequency
Rate value and the second vibration frequency value, set up the corresponding relation curve of an air pressure and vibration frequency.
Wherein, when formally carrying out locking operation, inputted in the range of the first torque value and the second torque value
One target torque value, microprocessor obtained on the corresponding relation curve of air pressure and moment of torsion to should target turn round
The operating air pressure of square value, microprocessor drives the pneumatic dynamic torque tool to be locked according to the operating air pressure again
Gu operation.And the operation vibration frequency values and air pressure and vibration frequency that microprocessor is sensed according to shock sensor
Corresponding relation curve, it is right when judging to drive the pneumatic dynamic torque tool to carry out locking operation with the operating air pressure
Whether the vibration frequency value answered is consistent with target torque value.
It is preferred that torque controlling device can more include an input module, it can have an automatic setting button；
It is micro- after setting button is triggered automatically when first carrying out the verification operation of outputting torsion before locking operation
Processor is automatically progressively increased air pressure to the first operating air pressure by the second operating air pressure with default program, or
Second operating air pressure is progressively downgraded by the first operating air pressure, it is bent with the corresponding relation for setting up air pressure and moment of torsion
The corresponding relation curve of line and air pressure and vibration frequency, while whole process is recorded in mnemon.
It is preferred that having power supply including more can separately setting a set of display module, alarm module and output module
Module and the portable electron device or Wearable electronic installation of simple microprocessor, with convenient working.
It is preferred that when carrying out locking operation, with microprocessor controls solenoid valves output services air pressure to gas
Dynamic dynamic torque tool, when microprocessor judges that the strain value that torsion torque sensor is sensed reaches target torque value,
Judge that completion locking is qualified and cuts off source of the gas.
It is preferred that when carrying out locking operation, time of the microprocessor according to needed for the locking operation,
When the strain value that torsion torque sensor is sensed reaches target torque value, according to the locking time whether predetermined
In the time range that locks, to judge that whether qualified locking operation is.
It is preferred that pneumatic torque instrument can utilize torsion torque sensor and its built-in angular transducer；Entering
During row locking operation, when torsion torque sensor senses fastener and is locked to the twist value of veneer, angle is passed
Sensor start calculate the anglec of rotation, when twist value reaches the target torque value, microprocessor according to
Whether the angle that locks is in predetermined locking angular range, to judge that whether qualified the locking operation is.
It is preferred that when carrying out locking operation, as because of working space limitation torsion torque sensor need to be removed
In the case of, air pressure and torsion and vibrations that microprocessor is set up according only to the shock value of sensing and through verification
The relation curve of value, can still do the control of loop circuit, when reaching target torque value, relatively more corresponding shake
Dynamic value, to judge that whether qualified locking operation is.
The torsion control method and its torsion control system of the present invention, it can have one or more following excellent
Point：
(1) torsion control method and its torsion control system of the invention, except using through verification foundation
The corresponding relation curve of air pressure and moment of torsion, is locked with obtaining the operating air pressure corresponding to target torque
Make out of trade, further using shock sensor, air pressure and vibration frequency are synchronously set up during verification torsion
Corresponding relation curve, and when target torque value is reached, relatively more corresponding shock value, to judge that locking is made
Whether qualified industry is.Thus a parameter can effectively promote the accuracy of moment of torsion control, more be able to because of operation
Space limits and need to removed under the handling situations of torsion torque sensor, still can according only to sensing shock value and
The relation curve of the air pressure set up through verification and torsion and shock value does the control of loop circuit, controllable to carry out
The locking operation of torsion processed, and judge that whether qualified locking operation is.
(2) torsion control method and its torsion control system of the invention, can be by the aobvious of torque controlling device
Show that module, alarm module and output module have power module and simple microprocessor in being independently arranged at
Portable electron device or Wearable electronic installation, with convenient working.
(3) torsion control method and its torsion control system of the invention, it, can by auto-set mode
The corresponding relation curve and air pressure and the corresponding relation curve of vibration frequency of air pressure and moment of torsion are automatically set up,
With the efficiency of effective increase verification.
(4) of the invention torsion control method and its torsion control system, its by torque mode, the time with
The multiple locking solid model formula such as torque mode, moment of torsion and angle mode and time, moment of torsion and angle mode is matched somebody with somebody
Put, thus can increase the torsion control method of the present invention and its application of torsion control system, so that
Its practicality and the precision of control can effectively be increased.
Brief description of the drawings
The step of Fig. 1 is torsion control method of the invention is schemed.
Fig. 2 is the block diagram of the torsion control system of the present invention.
Fig. 3 is the automatic setting procedure figure of the torsion control system of the present invention.
Fig. 4 is the block diagram of another embodiment of the torsion control system of the present invention.
The step of Fig. 5 is the torque mode locking operation of the torsion control method of the present invention is schemed.
The step of Fig. 6 is time and the torque mode locking operation of the torsion control method of the present invention is schemed.
The step of Fig. 7 is angle and the torque mode locking operation of the torsion control method of the present invention is schemed.
The step of Fig. 8 is time, angle and the moment of torsion locking work pattern of the torsion control method of the present invention
Figure.
Fig. 9 is the torsion control method of the present invention and its air pressure, moment of torsion, the vibrations frequency of torsion control system
The corresponding relation curve map of rate.
Symbol description
1：Pneumatic tube system
2：Torque controlling device
3：Pneumatic torque instrument
4：Torsion torque sensor
5：Shock sensor
6：Angular transducer
7：Wearable device
8：Torsion control system
20：Power module
20’：Wearable power module
21：Admission pressure monitoring module
22：Air pressure adjustment module
23：Magnetic valve
25：Microprocessor
25’：Wearable microprocessor
26：Output module
26’：Wearable output module
27：Display module
27’：Wearable display module
28：Mnemon
28’：Wearable mnemon
29：Alarm unit
29’：Wearable alarm unit
30：Automatic setting button
51：First operating air pressure
52：Second operating air pressure
53：First torque value
54：Second torque value
55：First vibration frequency value
56：Second vibration frequency value
57：The corresponding relation curve of air pressure and moment of torsion
58：The corresponding relation curve of air pressure and vibration frequency
S11~S16, S31~32, S51~S52, S61~62, S71~S73, S81~S84：Step
Suddenly
Embodiment
In following each embodiments, such as corresponding relation, air pressure adjustment, stable gas comprising air pressure and moment of torsion
The technological means such as the monitoring of pressure, it is for example at patent application " torsion control method and its torque controlling device "
Described in (Application No. 201410371437.6), its full text is sincerely introduced as present specification
A part.
As shown in figure 1, it schemes the step of being the torsion control method of the present invention.As illustrated, of the invention
Torsion control method comprise the steps of：(S11) shock sensor is set in Pneumatic impact torsion
Instrument；(S12) pneumatic circuit is connected to torque controlling device from baric systerm, in the starting of locking operation
Stable operating air pressure is exported into terminal procedure to Pneumatic impact dynamic torque tool；(S13) before locking,
Exerted oneself the torsion torque sensor at end using Pneumatic impact dynamic torque tool is installed in, with fastener and treat locking part
First carry out the verification operation of outputting torsion, according to Pneumatic impact dynamic torque tool can normal operating the first work
Make air pressure and corresponding first torque value and the second operating air pressure and corresponding second torque value, set up air pressure
With the corresponding relation curve of moment of torsion；(S14) according to the first vibration frequency value for corresponding to the first operating air pressure
And corresponding to the second vibration frequency value of the second operating air pressure, set up the corresponding relation of air pressure and vibration frequency
Curve；(S15) target torque value of the input between first and second torque value, according to air pressure with turning round
The corresponding relation curve of square drives Pneumatic immpacting to obtain corresponding operating air pressure value with the operating air pressure
Formula dynamic torque tool carries out locking operation；And the operation vibration frequency that (S16) is sensed according to shock sensor
The corresponding relation curve of rate value and air pressure and vibration frequency, judges to drive Pneumatic impact with the operating air pressure
When dynamic torque tool carries out locking operation, whether corresponding shock value meets target torque value.
In simple terms, torsion control method of the invention is arranged on Pneumatic impact torsion by shock sensor
On instrument, so that when setting up the corresponding relation curve of air pressure and moment of torsion, one can be set up in the lump close to linearly
Air pressure and vibration frequency corresponding relation curve (as shown in Figure 9).Therefore, with correspondence target torque
When the operating air pressure of value carries out locking operation, the vibration frequency value that can be sensed in the lump using shock sensor
Verify whether to meet with target torque value simultaneously.
By the way, the corresponding relation curve of air pressure and moment of torsion and air pressure and vibration frequency are being set up
The first operating air pressure and the second operating air pressure used in corresponding relation curve, wherein the first operating air pressure
It is not equal to the second operating air pressure.And it is preferred that the first operating air pressure can be that can stablize the work gas of output
Highest operating air pressure in pressure, and the second operating air pressure can be can stablize output operating air pressure in most
Low operating air pressure.Further, since the first operating air pressure is the permissible highest work of the pneumatic torque instrument
Air pressure, and the second operating air pressure value be the pneumatic torque instrument can normal operating minimum operating air pressure, because
This first torque value can be maximum torque, and the second torque value can be minimal torque value.
As shown in Figures 2 and 3.As shown in Fig. 3 step S31~32, first exported before locking
During the verification operation of torsion, if when the automatic setting button 30 of output module 26 is triggered, microprocessor
25 can be stepped up to the first operating air pressure 51 automatically with the program control of setting by the second operating air pressure 52,
Or the second operating air pressure 52 is progressively downgraded by the first operating air pressure 51, to set up pair of air pressure and moment of torsion
Answer the corresponding relation curve 58 of relation curve 57 and air pressure and vibration frequency.In order to control dress using torsion
The automatic Regulation module put by microprocessor when being unable to reach target torque value, can be set
Program finely tunes air pressure upwards automatically, when target torque value, and begin cut-out source of the gas or in still can not finally
When reaching target torque, propose to warn and cut off source of the gas.For this purpose, actually starting the work gas of operation
Pressure then optionally may be set to force down 10~20% compared with the permissible highest work gas of pneumatic torque instrument.
Wherein, if during manual mode, of course to adjust air pressure in a manual manner to the first operating air pressure
51 to obtain the first torque value 53 and the first vibration frequency value 55, then adjusts air pressure to the second operating air pressure
52, to obtain the second torque value 54 and the second vibration frequency value 56, take the company of its high and low point-to-point transmission respectively
Knot, to set up the corresponding relation curve 57 and air pressure of air pressure and moment of torsion and the corresponding relation curve of vibration frequency
58。
The torsion control method of the present invention can be applied to torsion control system 8.Torsion control system 8 is included
Torsion torque sensor 4, shock sensor 5 and torque controlling device 2.Torque controlling device 2 is predominantly connected
Between a baric systerm 1 and pneumatic torque instrument 3.Torque controlling device 2 mainly contains air inlet pressure
Power monitoring module 21, air pressure adjustment module 22, magnetic valve 23, mnemon 28 and microprocessor 25,
And can separately include the components such as display module 27, alarm unit 29 and output module 26.Air pressure adjustment mould
Block 22 can include the components such as automatic or manual voltage regulating module, air pressure proportional control valve, atmospheric pressure control valve,
Just it is not repeated here in this.
Shock sensor 5 is arranged on pneumatic torque instrument 3 (such as Pneumatic impact dynamic torque tool), and
Torsion torque sensor 4 is installed in the end of exerting oneself of pneumatic torque instrument 3, and it is connected in a wired or wireless manner
Microprocessor 25；Wherein shock sensor, torsion torque sensor and torque controlling device are each with logical each other
Module is interrogated, is communicated using the mode of wired or wireless transmission, such as RS232, RS485, USB and phase
Close communications protocol RF, BT, WIFI, ZB etc..And shock sensor 5 be able to can be felt comprising accelerometer etc.
Sensing component, signal amplification circuit, microprocessor, power supply or the transport module of the vibration frequency of survey instrument
Deng component etc., and it connects microprocessor 25 in the way of wired or wireless transmission.
Admission pressure monitoring module 21 controls to enter the air pressure of torque controlling device 2 from baric systerm 1,
Or the proposition warning of alarm module 29 is utilized when air inlet exceeds the upper pressure limit of torque controlling device 2.Air pressure
Adjustment module 22 adjusts the output to an atmospheric pressure value of pneumatic torque instrument 3.Magnetic valve 23 is shut on or off
Export to the pneumatic supply of pneumatic torque instrument 3.
Mnemon 28 stores pneumatic torque instrument 3 in steady operation air pressure range, is formally being locked
Gu before operation, to same specification, the fastener of type and locking part is treated respectively with the first operating air pressure 51
The corresponding torque value 54 of first torque value 53 and second respectively is obtained with the verification of the second operating air pressure 52, and
The first vibration frequency value 55 corresponding to the first operating air pressure 51 that shock sensor 5 is sensed with it is corresponding
In one second vibration frequency value 56 of the second operating air pressure 52.Microprocessor 25 obtained according to verification the
One operating air pressure 51, the second operating air pressure 52, the first torque value 53 and the second torque value 54, set up one
The corresponding relation curve 57 of air pressure and moment of torsion, and according to the first operating air pressure 51, the second operating air pressure 52
With the first vibration frequency value 55, the second vibration frequency value 56, air pressure pass corresponding with vibration frequency is set up
It is curve 58.Therefore, when formally carrying out locking operation, microprocessor 25 can according to first with this
A target torque value of input in two torque values 53,54, by air pressure and the corresponding relation curve 57 of moment of torsion
The upper operating air pressure for obtaining correspondence target torque value, microprocessor 25 is driven according to the operating air pressure again
Pneumatic torque instrument 3 is to carry out locking operation.Then, microprocessor 25 can be again according to shock sensor 5
The vibration frequency value of sensing, according to air pressure and the corresponding relation curve 58 of vibration frequency, to judge to be somebody's turn to do simultaneously
Whether the vibration frequency value of sensing is consistent with target torque value.
In practice, microprocessor 25 simultaneously the strain value that is sensed according to torsion torque sensor 4 and
The vibration frequency value that the corresponding relation curve 58 of air pressure and vibration frequency is obtained, to judge the vibrations of the sensing
Whether frequency values meet target torque value.In this way, judging whether locking operation meets using the two simultaneously
Target torque value, can promote the accuracy of moment of torsion control.Of course, also optionally it is used only wherein
Whether a kind of mode meets target torque value come the operation that judges to lock.For example, microprocessor 25 can be only
According to the strain value of torsion, or only in accordance with the frequency sensing value of vibrations, to judge whether locking operation accords with
Close target torque value.Because torsion torque sensor 4 is the component of price costly, and in long-time acutely
Easily cause damage under the locking operation of impact, if therefore complete verification after, remove torsion torque sensor 4,
Carry out detecting vibration frequency values only in accordance with shock sensor, can still do the control of loop circuit, to judge that locking is made
Industry is no to meet target torque value, except that can reduce acquisition cost, and suitable for being limited by operating space, nothing
Method uses the Work places of torsion torque sensor.
In addition, in above-mentioned automatic mode, air pressure adjustment module 22 includes automatic Regulation module, air pressure
Proportional control valve, atmospheric pressure control valve, now microprocessor 25 is controllable first with less than corresponding to target
The operating air pressure of torque value drives pneumatic dynamic torque tool 3, then by air pressure proportional control valve, atmospheric pressure control
Valve processed is automatically heightened to the operating air pressure corresponding to target torque value, and torsion was caused to avoid starting moment.
Even, strain value, inquiry air pressure and the vibrations frequency that can be sensed according further to torsion torque sensor 4
The combination of the vibration frequency value that the corresponding relation curve 58 of rate is obtained or both, and automatically adjust to correspondence
In the operating air pressure of target torque value.Wherein, if in the case where working space is limited, in removing torsion
, still can be by the air pressure and the corresponding relation curve 57 and air pressure of moment of torsion set up and vibrations frequency after sensor 4
The corresponding relation curve 58 of rate, carries out the torsion control locking operation of loop circuit.
As shown in figure 4, in preferably embodiment, functional module can be separately set up, such as display module 27 ',
The electronic building bricks such as microprocessor 25 ', alarm module 29 ', output module 26 ' are in portable electron device
Or in Wearable electronic installation, with user-friendly, and wirelessly carried out with microprocessor 25
Communication.Portable electron device can be tablet PC, intelligent mobile phone or notebook computer etc., and wear
Wearing electronic device can be smart watch, intelligent glasses or intelligent helmet etc., and it can all be included；
Power supply, microprocessor, wireless output module, display module and alarm module etc..
In practice, locking operation can be respectively equipped with torque mode, time and torque mode, moment of torsion
With the multiple locking solid model formula such as angle mode and time, moment of torsion and angle mode, with response to it is various locking make
The demand of used fastener and the specifications of quality for treating locking part etc. is described as follows industry respectively.
As shown in Figure 5.As shown in figure step S51~S52, if locked with torque mode,
When progress locking operation starts, microprocessor 25 controls electromagnetism according to the operating air pressure of correspondence target torque value
Valve 23 drives pneumatic dynamic torque tool 3.Meanwhile, torsion torque sensor 4 constantly can answer the torsion sensed
Variate is sent to microprocessor 25, and microprocessor 25 constantly can compare whether twist value meets
Or target torque value is reached；When microprocessor 25 judges that twist value meets or reaches target torque value,
The cut-out of magnetic valve 23 output is controlled to the pneumatic supply of pneumatic torque instrument 3, to complete locking operation and judge
The operation that locks is qualified.
As shown in Figure 6.As shown in figure step S61~62, if locked with time and torque mode,
When progress locking operation starts, torsion torque sensor 4 constantly can transmit the twist value sensed
To microprocessor 25, and microprocessor 25 can constantly compare whether twist value meets or reach mesh
Mark torque value；Simultaneously, microprocessor 25 can be since being driven pneumatic dynamic torque tool 3 magnetic valve 23
The accumulative locking time, and compare whether the locking time meets predetermined locking time range.Work as microprocessor
Device 25 judges that twist value reaches target torque value, and the locking time is when meeting in predetermined time range,
Control magnetic valve 23 cuts off output to the pneumatic supply of pneumatic torque instrument 3 immediately, completes locking operation and sentences
The solid operation of lock is qualified.
As shown in Figure 7.As shown in figure step S71~73, for the comparison and judgement of moment of torsion, such as preceding institute
State, just repeated no more in this.If locked with angle and torque mode, pneumatic torque instrument 3 can
Utilize the angular transducer 6 built-in with torsion torque sensor 4.When carrying out locking operation, when fastener lock
To the moment with treating locking part veneer, it is bright that the twist value that torsion torque sensor 4 is sensed can produce one
Aobvious peak value；Now, microprocessor 25 then starts the anglec of rotation of sensing according to angular transducer 6, compares
Whether locking angle value is reached in predetermined locking angular range.When microprocessor 25 judges twist value
Target torque value is reached, and locking angle displacement controls electromagnetism when reaching in predetermined locking angular range
The cut-out of valve 23 is exported to the pneumatic supply of pneumatic torque instrument 3, to complete locking operation and judge the operation that locks
It is qualified.
As shown in Figure 8.As shown in figure step S81~84, wherein, for moment of torsion, angle and time
Compare with judging, as it was previously stated, just being repeated no more in this.In brief, microprocessor 25 judges torsion
When strain value reaches target torque value, locking angle value meets in predetermined locking angular range, Yi Jisuo
Gu time value is also met in predetermined locking time range, judge that locking operation is qualified.It is worth mentioning
It is that locking angle value meets predetermined locking angle value and locking time value meets predetermined locking time value, its
Can have and allow acceptability limit, such as ± 10%, all it can determine that to be qualified.Thus, to ignore fastener
With treating the numerical value difference produced by the unavoidable otherness because of soft or hard faying face etc. of locking part.
In summary, torsion control method and its torsion control system of the invention, further utilize gas
The vibration frequency value that the shock sensor 5 of the dynamic installing of impact type dynamic torque tool 3 is measured, to judge that locking is made
Whether industry reaches target torque value.Thus the accuracy of control mode can effectively be promoted.More it is able to making
, still can be by the air pressure and moment of torsion set up after torsion torque sensor 4 is removed in the case of industry limited space
Corresponding relation curve 57 and air pressure and vibration frequency corresponding relation curve 58, carry out loop circuit torsion
Control locking operation.In addition, also can by functional module same in torque controlling device, such as display unit,
Mnemon, output module, alarm unit, microprocessor etc. separately set up in portable electron device or
Wearable electronic installation 7, and thus can effectively be increased with wireless communication transmissions with torque controlling device
Use upper convenience.In addition, it is corresponding with moment of torsion to automatically set up air pressure by auto-set mode
The corresponding relation curve of relation curve and air pressure and vibration frequency, thus can effectively increase it is operational just
Profit.And in locking operation, torsion control method of the invention and its torsion control system can have many
The configuration of kind of locking pattern, thus can increase the torsion control method and its torsion control system of the present invention
Application, so as to effectively increase practicality and use upper convenience.
Although present disclosure is discussed in detail by above preferred embodiment, but it should understanding
Limitation of the present invention is not considered as to the description above.Read above-mentioned in those skilled in the art
After content, a variety of modifications and substitutions for the present invention all will be apparent.Therefore, it is of the invention
Protection domain should be limited to the appended claims.
Claims (14)
1. a kind of torsion control method, it is characterised in that to make applied to the locking of Pneumatic impact dynamic torque tool
Industry, it is comprised the steps of：
Shock sensor is set to the Pneumatic impact dynamic torque tool；
Pneumatic circuit is connected to torque controlling device from baric systerm, to export stable operating air pressure extremely
The Pneumatic impact dynamic torque tool, and in locking operation starting into terminal procedure, monitoring work
Air pressure is in the range of default allowable variation；
Before locking, first to same specification, the fastener of type with treating that locking part carries out outputting torsion
Operation is verified, can the first operating air pressure of normal operating and right according to the Pneumatic impact dynamic torque tool
The first torque value answered and the second operating air pressure and corresponding second torque value set up air pressure and moment of torsion
Corresponding relation curve；Wherein described first operating air pressure is not equal to second operating air pressure；Meanwhile,
According to the first vibration frequency value for corresponding to first operating air pressure and corresponding to described second
Second vibration frequency value of operating air pressure value, sets up the corresponding relation curve of air pressure and vibration frequency；
The target torque value inputted between the first torque value and the second torque value, according to the air pressure
With the corresponding relation curve of moment of torsion to obtain the operating air pressure of corresponding target torque value, and with the work
Air pressure drives the Pneumatic impact dynamic torque tool to carry out locking operation；And
The operation vibration frequency values and the air pressure and vibration frequency sensed according to the shock sensor
The corresponding relation curve of value, judges to drive the Pneumatic impact dynamic torque tool to enter with the operating air pressure
During row locking operation, whether the operation vibration frequency values meet the target torque value.
2. the torsion control method as described in claims requirement 1, it is characterised in that before locking, first
The verification operation of outputting torsion is carried out, the following steps are further included：
The time required to being set according to operation to be locked；
In a manual manner regulation air pressure to first operating air pressure with obtain first torque value with
The first vibration frequency value, then adjust air pressure to second operating air pressure to obtain second torsion
Square value and the second vibration frequency value, take the link of its high and low point-to-point transmission respectively, described to set up
The corresponding relation curve and the air pressure and the corresponding relation curve of vibration frequency of air pressure and moment of torsion；
Either,
Stepped up in automatic Regulation mode by second operating air pressure to first operating air pressure,
Or the second operating air pressure mode is progressively downgraded by first operating air pressure, to set up the gas
Pressure and the corresponding relation curve and the corresponding relation curve of the air pressure and vibration frequency of moment of torsion.
3. torsion control method as claimed in claim 1, it is characterised in that when carrying out locking operation, institute
The method of stating further includes the following steps：
The Pneumatic impact torsion work is driven with the operating air pressure of the correspondence target torque value
Tool is locked；
When judging to reach the target torque value according to the twist value that torsion torque sensor is sensed, sentence
Disconnected locking operation is qualified.
4. torsion control method as claimed in claim 1, it is characterised in that when carrying out locking operation, institute
The method of stating further includes the following steps：
The locking time according to needed for locking operation；And
The twist value sensed according to torsion torque sensor, is turned round up to the target in twist value
During square value, according to the locking time consumed whether in predetermined locking time range, to judge
Whether qualified the operation that locks is.
5. torsion control method as claimed in claim 1, it is characterised in that methods described further includes following step
Suddenly：
Twist value is sensed using torsion torque sensor；
Calculate the anglec of rotation to produce locking angle using its built-in angular transducer；Wherein described angle
Sensor is spent when the torsion torque sensor senses fastener and touched the strain value of working face, is opened
Begin to calculate the anglec of rotation；
When the twist value reaches the target torque value, according to it is described locking angle whether
In predetermined locking angular range, to judge that whether qualified locking operation is.
6. torsion control method as claimed in claim 1, it is characterised in that methods described further includes following step
Suddenly：
The locking time according to needed for locking operation；
Twist value is sensed using torsion torque sensor；
Calculate the anglec of rotation to produce locking angle using its built-in angular transducer；Wherein described angle
Sensor is spent when the torsion torque sensor senses fastener and touched the strain value of working face, is opened
Begin to calculate the anglec of rotation；
When the twist value reaches the target torque value, according to it is described locking angle whether
In predetermined locking angular range, and whether the locking time is in a predetermined locking time range
It is interior, to judge that whether qualified locking operation is.
7. a kind of torsion control system, it is characterised in that include：
Shock sensor, is arranged on Pneumatic impact dynamic torque tool；
Torsion torque sensor, is flexibly installed in the Pneumatic impact torsion work in built-in or plug-in mode
Has the axis at end of exerting oneself；
Torque controlling device, is connected between baric systerm and Pneumatic impact dynamic torque tool, it is included：
Admission pressure monitoring module, controls to enter the air pressure of the torque controlling device from baric systerm
Power, or when air inlet exceeds the upper pressure limit of the torque controlling device, propose warning；
Air pressure adjustment module, for adjusting the output to the Pneumatic impact torsion in manual or automated manner
The air pressure size of instrument；
Magnetic valve, is shut on or off output to the pneumatic supply of the Pneumatic impact dynamic torque tool；
Mnemon, is stored according to the Pneumatic impact dynamic torque tool before formally lock,
Can be in the air pressure range of steady operation, using torsion torque sensor, to the fastener of same specification, type
With treating that locking part is verified to obtain the first operating air pressure and corresponding first torque value and the second work
Make air pressure and corresponding second torque value, and corresponding first vibrations that the shock sensor is sensed
Frequency values and the second vibration frequency value, wherein first operating air pressure is not equal to second work gas
Pressure；
Microprocessor, according to first operating air pressure, the second operating air pressure, the first torque value and
Two torque values, the air pressure of foundation and the corresponding relation curve of moment of torsion, and first operating air pressure,
Second operating air pressure, the first vibration frequency value and the second vibration frequency value, air pressure and the vibrations frequency of foundation
The corresponding relation curve of rate, and according to the feedback signal of sensor, to instruct each unit module to do loop circuit
Outputting torsion control；
Wherein, when formally carrying out locking operation, according to first torque value and the second torque value model
The target torque value of interior input is enclosed, the microprocessor is in the air pressure and the corresponding relation curve of moment of torsion
Upper obtain corresponding operating air pressure, microprocessor drives the " Air-Uplift " according to the operating air pressure again
Hit formula dynamic torque tool to carry out locking operation, the microprocessor is according to the air pressure and vibration frequency
The vibration frequency value of corresponding relation curve and shock sensor sensing, whether to judge locking operation
It is qualified.
8. torsion control system as claimed in claim 7, it is characterised in that the Pneumatic impact torsion work
The shock sensor for having installing and the torsion torque sensor and the torque controlling device being connected,
It is each with communication module each other, transmit or receive in a wired or wireless fashion sensing value.
9. torsion control system as claimed in claim 7, it is characterised in that further include input module, it has
Have automatic setting button, before locking, the microprocessor according to operation lock setting required time with
When carrying out the verification operation of outputting torsion, after the automatic setting button is triggered, the microprocessor
Stepped up by second operating air pressure to first operating air pressure, or by first work gas
Pressure progressively downgrades second operating air pressure, to set up the corresponding relation curve of the air pressure and moment of torsion
And the corresponding relation curve of the air pressure and vibration frequency.
10. torsion control system as claimed in claim 7, it is characterised in that separately set a set of microprocessor, defeated
Enter module, display module, a power module and alarm module in portable electron device or Wearable electricity
Sub-device, and wirelessly communicated with the torque controlling device, to facilitate operator to make
With.
11. torsion control system as claimed in claim 7, it is characterised in that when carrying out locking operation, institute
The operating air pressure of the microprocessor according to the correspondence target torque value is stated, controls the magnetic valve to drive
The Pneumatic impact dynamic torque tool is moved to be locked, and the microprocessor is sensed in the torsion
When the twist value that device is sensed reaches the target torque value, cut-out source of the gas completes locking operation.
12. torsion control system as claimed in claim 7, it is characterised in that when carrying out locking operation, institute
Locking time of the microprocessor according to needed for locking operation is stated, the torsion sensed in torsion torque sensor should
When variate reaches the target torque value, depending on spent time whether in the predetermined locking time range
It is interior, to judge that whether qualified locking operation is.
13. torsion control system as claimed in claim 7, it is characterised in that the Pneumatic impact torsion work
Tool utilizes the torsion torque sensor and the built-in angular transducer of the torsion torque sensor, is being locked
During operation, the microprocessor senses fastener according to the torsion torque sensor and touches working face
During strain value, start to calculate the locking angle screwed produced by angle depending on the angular transducer, if
In the angular range of predetermined locking, to judge that whether qualified locking operation is.
14. torsion control system as claimed in claim 7, it is characterised in that the Pneumatic impact torsion work
Tool utilizes the torsion torque sensor and the built-in angular transducer of the torsion torque sensor, is being locked
During operation, the microprocessor senses fastener according to the torsion torque sensor and touches working face
During strain value, start to calculate the locking angle screwed produced by angle depending on the angular transducer, if
In the angular range of predetermined locking, and according to locking spent time whether in predetermined locking time model
In enclosing, to judge that whether qualified locking operation is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072863.9A CN107024943B (en) | 2016-02-02 | 2016-02-02 | The torsion control method and its torsion control system of Pneumatic impact dynamic torque tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072863.9A CN107024943B (en) | 2016-02-02 | 2016-02-02 | The torsion control method and its torsion control system of Pneumatic impact dynamic torque tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107024943A true CN107024943A (en) | 2017-08-08 |
| CN107024943B CN107024943B (en) | 2019-11-29 |
Family
ID=59524249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610072863.9A Active CN107024943B (en) | 2016-02-02 | 2016-02-02 | The torsion control method and its torsion control system of Pneumatic impact dynamic torque tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107024943B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402104A (en) * | 2017-09-06 | 2017-11-28 | 远景能源（江苏）有限公司 | Hydraulic spanner operation automatic inspection system and method |
| CN110580064A (en) * | 2018-06-07 | 2019-12-17 | 中国气动工业股份有限公司 | Torsion control method and torsion control device for locking bolts in multiple times |
| US11318593B2 (en) | 2018-06-07 | 2022-05-03 | China Pneumatic Corporation | Apparatus and method for bolting torque control within pre-determined rounds |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU435465A1 (en) * | 1971-10-22 | 1974-07-05 | В. Р. Санто | VIBRATION-FREQUENCY SENSOR FOR MEASURING THE MOMENT OF FORCES |
| JPH02131839A (en) * | 1988-11-08 | 1990-05-21 | Nippon Pneumatic Mfg Co Ltd | Automatic control method for vibration cutting device |
| CN1093649A (en) * | 1993-04-13 | 1994-10-19 | 张景顺 | The shock-dampening method of percussion tool and vibration absorption unit |
| CN101680828A (en) * | 2007-04-19 | 2010-03-24 | 国际计测器株式会社 | General-purpose test device, linear actuator, and twist test device |
| CN101797737A (en) * | 2009-02-02 | 2010-08-11 | 中国气动工业股份有限公司 | Anti-vibration torque sensing and control device for tools |
| CN103954419A (en) * | 2014-04-29 | 2014-07-30 | 西安交通大学 | Threaded fastener transverse vibration test device and method |
| CN204116983U (en) * | 2014-07-31 | 2015-01-21 | 中国气动工业股份有限公司 | Torque controlling device |
| CN205750568U (en) * | 2016-02-02 | 2016-11-30 | 中国气动工业股份有限公司 | The torsion control system of Pneumatic impact dynamic torque tool |
-
2016
- 2016-02-02 CN CN201610072863.9A patent/CN107024943B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU435465A1 (en) * | 1971-10-22 | 1974-07-05 | В. Р. Санто | VIBRATION-FREQUENCY SENSOR FOR MEASURING THE MOMENT OF FORCES |
| JPH02131839A (en) * | 1988-11-08 | 1990-05-21 | Nippon Pneumatic Mfg Co Ltd | Automatic control method for vibration cutting device |
| CN1093649A (en) * | 1993-04-13 | 1994-10-19 | 张景顺 | The shock-dampening method of percussion tool and vibration absorption unit |
| CN101680828A (en) * | 2007-04-19 | 2010-03-24 | 国际计测器株式会社 | General-purpose test device, linear actuator, and twist test device |
| CN101797737A (en) * | 2009-02-02 | 2010-08-11 | 中国气动工业股份有限公司 | Anti-vibration torque sensing and control device for tools |
| CN103954419A (en) * | 2014-04-29 | 2014-07-30 | 西安交通大学 | Threaded fastener transverse vibration test device and method |
| CN204116983U (en) * | 2014-07-31 | 2015-01-21 | 中国气动工业股份有限公司 | Torque controlling device |
| CN205750568U (en) * | 2016-02-02 | 2016-11-30 | 中国气动工业股份有限公司 | The torsion control system of Pneumatic impact dynamic torque tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402104A (en) * | 2017-09-06 | 2017-11-28 | 远景能源（江苏）有限公司 | Hydraulic spanner operation automatic inspection system and method |
| CN110580064A (en) * | 2018-06-07 | 2019-12-17 | 中国气动工业股份有限公司 | Torsion control method and torsion control device for locking bolts in multiple times |
| CN110580064B (en) * | 2018-06-07 | 2021-01-12 | 中国气动工业股份有限公司 | Torsion control method and torsion control device for locking bolts in multiple times |
| US11318593B2 (en) | 2018-06-07 | 2022-05-03 | China Pneumatic Corporation | Apparatus and method for bolting torque control within pre-determined rounds |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107024943B (en) | 2019-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107024943A (en) | The torsion control method and its torsion control system of Pneumatic impact dynamic torque tool | |
| US20150135306A1 (en) | Electric Tool | |
| CN105320168B (en) | Torsion control method and its torque controlling device | |
| CN205750568U (en) | The torsion control system of Pneumatic impact dynamic torque tool | |
| EP1973077A2 (en) | Apparatus and system for monitoring tool use | |
| TWI592778B (en) | Torque Control Method and System for Air Impact ?Torque Tools | |
| US20120191378A1 (en) | Apparatus capable of controlling, tracking and measuring tightening torque and locking force, and method for controlling, tracking, measuring and calibrating thereof | |
| US20130153250A1 (en) | Tool | |
| WO2008137244A3 (en) | Portable air compressor/generator control method and system | |
| US10166643B2 (en) | Method for making safe the use of at least one hand-held power tool | |
| AU2002216527A1 (en) | Tap changer monitoring | |
| CN109070317A (en) | For stepping up the device of threaded fastener | |
| CN204116983U (en) | Torque controlling device | |
| US20230148339A1 (en) | Apparatus for tightening threaded fasteners | |
| CN106556491A (en) | Based on manometric pressure monitoring regulation device and its method | |
| US20160011764A1 (en) | Vibration Treatment Method and Graphical User Interface | |
| CN108505978A (en) | Gas well downhole flow control system and control method | |
| CN202691262U (en) | Dynamic balance electric control valve with parameter display function | |
| CN206899106U (en) | A kind of wireless torque spanner control system | |
| CN105717964A (en) | Indoor environment monitoring equipment | |
| KR101114448B1 (en) | Apparatus and method for calibrating dmper | |
| CN109108882A (en) | The torsion control system and its torsion control method of electric impact-type dynamic torque tool | |
| TWM530731U (en) | Torque control system for air impact torque tools | |
| CN204669502U (en) | For circuit board systems and the rotary electric subset of rotary electric subset | |
| TW200503539A (en) | A monitor with adjustable angle and operation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |