CN105983945B - Power tool and control method for power tool - Google Patents
Power tool and control method for power tool Download PDFInfo
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- CN105983945B CN105983945B CN201510043731.9A CN201510043731A CN105983945B CN 105983945 B CN105983945 B CN 105983945B CN 201510043731 A CN201510043731 A CN 201510043731A CN 105983945 B CN105983945 B CN 105983945B
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Abstract
The invention discloses a kind of power tool, including shell, motor, output rod, rotating mechanism, detection unit and control unit, motor is contained in the shell；Output rod is for driving work head；Rotating mechanism can be used for the rotation output of motor being transferred to output rod reciprocating；Detection unit is used to detect the reciprocating location information of the output rod or the location information of rotating mechanism rotation；Control unit; it is connect respectively with the detection unit and the motor; location information for being detected based on the detection unit; obtain the reciprocating direction of motion of the output rod, speed; and the location of described output rod region; and control the rotating speed of the motor and start downtime, so that the output rod rests on default safety zone, to improve the safety and reliability that power tool uses.A kind of control method for power tool is also provided.
Description
Technical field
The present invention relates to a kind of power tool and for the control method of power tool.
Background technology
Common power tool is roughly divided into two kinds, a kind of power tool of output end output rotary motion, such as electric drill, spiral shell
Silk batch etc.；A kind of power tool of output end output straight reciprocating motion, such as reciprocating saw, sweep-saw.
Existing power tool is typically only capable to that output end is made to export a kind of movement, as electric drill is only capable of output rotary motion；It is past
Multiple saw is only capable of output reciprocating motion；But operator completes a certain work, when such as decorating house, generally requires to use a variety of
Different power tools, for this purpose, there is the power tool of double mode, i.e. output rod not only exportable rotary motion, but it is exportable
It moves back and forth.
But output rod may be parked in any one position, in general, in power tool when moving reciprocatingly shutdown
Non-security district, transition region and the region of safety zone three are had, it, may when output rod rests on the position of non-security district or transition region
It can cause man-machine safety problem.
Invention content
Based on this, it is necessary to which after being shut down for power tool, output rod stop place is uncertain, may cause man-machine peace
Full problem provides a kind of controllable output rod and rests on the power tool of predeterminated position and the controlling party for power tool
Method.
A kind of power tool, including：
Shell；
Motor is contained in the shell；
Output rod, for driving work head；
Rotating mechanism can be used for the rotation output of the motor being transferred to the output rod reciprocating；
The power tool further includes：
Detection unit, for detect the reciprocating location information of the output rod or the rotating mechanism rotation
Location information；
Control unit is connect with the detection unit and the motor respectively, is detected for being based on the detection unit
Location information, obtain the location of the reciprocating direction of motion of the output rod, speed and output rod area
Domain, and control the rotating speed of the motor and start downtime, so that the output rod rests on default safety zone.
In a wherein embodiment, described control unit is additionally operable to the process in control motor stopping, when the output rod
Reciprocating speed or the speed of rotating mechanism rotation drop to the first pre-set velocity value, and described control unit is herein
The shutdown opportunity of the motor is controlled under first pre-set velocity value.
In a wherein embodiment, described control unit is additionally operable to the speed or described reciprocating to the output rod
The speed continuous sampling of rotating mechanism rotation, and the rotating speed of the motor is controlled, the speed for keeping the output rod reciprocating
Or the speed of the rotating mechanism rotation is fallen before in preset time to the second pre-set velocity value, and it is default then to drop to first
Velocity amplitude, when the speed of the reciprocating speed of the output rod or rotating mechanism rotation drops to the first pre-set velocity
Value, described control unit controls the motor stopping, so that the output rod rests on default safety zone；
Wherein, the second pre-set velocity value is more than the first pre-set velocity value.
In a wherein embodiment, the detection unit includes first sensor, and is coordinated with the first sensor
It is located at the first trigger member of different location for incuding the output rod, the first sensor is two, two described first
Sensor is respectively arranged on the first test position and the second test position of the shell, and first trigger member is axially disposed at
The output rod；
Wherein, when the output rod is reciprocating, two first trigger member correspond to first sensing respectively
Device, described control unit incude according to the cooperation of the first sensor and first trigger member, obtain the output rod and make
The location information of reciprocating motion, and then the reciprocating speed of the output rod is obtained, and obtain the movement of the output rod
Direction and location region.
In a wherein embodiment, the detection unit includes second sensor and coordinates induction with the second sensor
The second trigger member, the second sensor be two, two second sensors be respectively arranged on the shell third inspection
Location is set and the 4th test position, and second trigger member is circumferentially arranged in the rotating mechanism；
Wherein, when the rotating mechanism rotates, described control unit is touched according to the second sensor and described second
The cooperation of outbox incudes, and obtains the rotation direction, velocity of rotation and different steering positions of the rotating mechanism, and then described in acquisition
The location of the reciprocating direction of motion of output rod, speed and output rod region.
In a wherein embodiment, described control unit includes processor and drive control circuit, the processor according to
The state parameter for the location information and/or velocity information that the detection unit detects sends corresponding control signal, the drive
Dynamic control circuit is used to be located at the different direction of motion, speed and different location region according to the output rod, controls the electricity
The rotating speed of machine and start shutdown opportunity, so that the output rod rests on the default safety zone.
In a wherein embodiment, the processor memory contains the reciprocating pre-set velocity value of the output rod,
The processor is additionally operable to make ratio with the pre-set velocity value according to the reciprocating sampled value of the output rod detected
Compared with motor speed described in operation control and start shutdown opportunity.
In a wherein embodiment, the drive control circuit is turned for output pulse width modulated signal with regulation motor
Speed.
A kind of control method for power tool includes the following steps：
Detect the location information of output rod or the steering position information of rotating mechanism；
According to the location information detected, the reciprocating direction of motion of the output rod, speed and described are obtained
The location of output rod region；
According to the location of the reciprocating direction of motion of output rod, speed and output rod region, motor is controlled
Rotating speed and start shutdown opportunity so that output rod is parked in default safety zone.
In a wherein embodiment, the direction of motion reciprocating according to output rod, speed and output rod institute
The band of position at place controls the rotating speed of motor and starts shutdown opportunity, so that output rod is parked in default safety zone and specifically includes
Following steps：
Motor speed is controlled, makes the speed of the rotation for the speed or rotating mechanism that output rod is reciprocating in preset time
It inside falls before to the second pre-set velocity value, then drops to the first pre-set velocity value；
When the speed that the reciprocating speed of output rod or rotating mechanism rotate drops to the first pre-set velocity value, control
Motor stopping, so that output rod rests on default safety zone.
Above-mentioned power tool and for power tool control method by detection unit detect output rod position believe
Breath, processor calculate the reciprocating speed of output rod, in the reciprocating speed of output rod by the location information of output rod
When reaching pre-set velocity, according to the speed of output rod and present position region, pass through the duty of drive control circuit regulation motor
Than controlling the rotating speed of motor and starting shutdown opportunity, to which output rod is parked in the preset band of position, improve power tool
The safety used and reliability.
Description of the drawings
Fig. 1 is the structural schematic diagram of the power tool of this better embodiment；
Fig. 2 is the power tool structural schematic diagram of another embodiment；
Fig. 3 is the flow chart of the power tool control method of this better embodiment.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give the preferred embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.Keep the understanding to the disclosure more saturating on the contrary, purpose of providing these embodiments is
It is thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the Listed Items of pass.
As shown in Figure 1, the present invention power tool 10 include shell (not shown), be contained in shell motor (figure not
Show), the output rod 12 for driving work head, for drive output rod 12 reciprocating or rotation rotating mechanism 14 and
Detection unit (not shown), control unit (not shown).
The rotation of motor can be exported and be transferred to output rod 12 by rotating mechanism 14, kept the output rod 12 reciprocating or revolved
Transhipment is dynamic.Detection unit is used to detect the reciprocating location information of output rod 12 or the position letter of the rotating mechanism 14 rotation
Breath, control unit are connect with detection unit and motor respectively, the location information for being detected based on the detection unit, and obtaining should
The location of the reciprocating direction of motion of output rod 12, speed and output rod 12 region, and control and adjust the electricity
The rotating speed and beginning downtime of machine, so that the output rod 12 rests on default safety zone when motor stalls.
Power tool 10 includes safety zone, transitional region and insecure area, is stopped when output rod 12 is reciprocating
When machine, it may be parked in any one position, if output rod 12 is parked in insecure area or safety zone, may result in people
The safety problem of machine.Detection unit detects the rotation status of the reciprocating location information or rotating mechanism 14 of output rod 12
Confidence ceases, the location information that control unit is detected by detection unit, the reciprocating direction of motion of acquisition output rod 12,
The location of speed and output rod 12 region to control the rotating speed of motor and start downtime, and then make output rod 12
Rest on safety zone.In this way, controllable make output rod 12 rest on safety zone, the peace that power tool 10 uses is improved
Full property and reliability.
It should be noted that the default safety zone in the present invention refers to, in power tool, output rod 12 is back and forth transported
Dynamic, the band of position finally stopped does not interfere with the region of man-machine safety.
Control unit is additionally operable to the process in control motor stopping in one of the embodiments, when output rod is made back and forth
The speed of speed or the rotating mechanism rotation of movement drops to the first pre-set velocity value, control unit the first pre-set velocity value herein
The shutdown opportunity of lower control motor, above-mentioned safety zone under making output rod finally stop.
Referring to Fig. 3, in another embodiment, control unit is additionally operable to the speed reciprocating to the output rod 12
Or the continuous sampling of the speed of the rotating mechanism 14 rotation, and the rotating speed of motor is controlled, keep the output rod 12 reciprocating
Speed or the speed of the rotating mechanism 14 rotation are fallen before in preset time to the second pre-set velocity value, finally drop to the again
One pre-set velocity value, when the control unit obtains the reciprocating speed of the output rod 12 or rotating mechanism 14 rotationally speed
The first pre-set velocity value is dropped to, control unit controls motor stopping, so that output rod 12 rests on preset safety zone.
Specifically, control unit includes processor (not shown) and drive control circuit (not shown), and processor is according to inspection
The state parameter for surveying velocity information and/or location information that unit detects sends corresponding control signal, which uses
In being located at the different direction of motion, speed and different location region according to output rod 12, controls the rotating speed of the motor and start to stop
Machine opportunity, so that the output rod 12 rests on safety zone.Stopping process when below to the reciprocating motion of the power tool 10
It is described.
Operating personnel, which start, to shut down, and detection unit detects the reciprocating direction of motion of output rod 12, speed and residing
The band of position；Then location information, the direction of motion and the velocity information that processing unit is detected according to detection unit, control electricity
The reciprocating speed of output rod 12 in preset time is first adjusted to the second pre-set velocity value, then adjusted by the rotating speed of machine
To the first pre-set velocity value；It is preset when the speed that the reciprocating speed of output rod 12 or rotating mechanism rotate drops to first
Velocity amplitude, controls motor stopping, and output rod 12 eventually settles at safety zone due to the effect of the damping between mechanical structure.
Refer to output rod 12 in reciprocating motion it should be noted that multiple pre-set velocity values in the present invention, speed exists
The velocity amplitude that certain time internal classification declines.In the present embodiment, including the first pre-set velocity value and the second pre-set velocity value,
In the first pre-set velocity value be less than the second pre-set velocity value.
It is appreciated that the quantity of pre-set velocity value is not limited thereto, it can realize that controllable adjusting output rod 12 is made back and forth
The purpose of the speed of movement, and make output rod 12 in motor stopping, rest on the purpose of safety zone.
More specifically, the processor memory contains the pre-set velocity value of the reciprocating classification of the output rod 12, at this
Reason device is additionally operable to be made comparisons with the pre-set velocity value of classification according to the reciprocating sampled value of the output rod 12 detected, sentences
Whether whether the reciprocating speed of disconnected output rod 12 reaches the pre-set velocity value of classification, and control the rotating speed of the motor and stop
Machine.The course of work of control unit is illustrated with specific embodiment below, for example, the speed that power tool 10 works normally
500 cm/s, the second pre-set velocity value are 300 cm/s, and the first pre-set velocity value is 100 cm/s, starts halt switch
When, the speed sampling reciprocating to output rod 12, and make comparisons with pre-set velocity value, when output rod 12 is reciprocating
Speed is more than the second pre-set velocity value, controls to adjust motor speed, and the speed for keeping output rod 12 reciprocating declines；For example,
Speed sampling constantly reciprocating to output rod 12, when the reciprocating speed of output rod 12 be 500 cm/s, then
Control unit controls motor speed, and the speed for keeping output rod 12 reciprocating is down in preset time from 500 cm/s
300 cm/s；Similarly, continue to sample, and by sampled value and pre-set velocity value comparison operation, when output rod 12 is reciprocating
Speed when being down to 100 cm/s, then location information, traffic direction and the velocity information that processor is detected according to detection unit,
The shutdown for controlling motor, to make output rod 12 rest on preset safety zone.
It may be noted that MCU, PLC or CPU etc. can be used in processor, in the present embodiment, processor is micro computer control system
It unites (MCU), those skilled in the art are it is contemplated that MCU generally includes central processing unit (CPU), read-only memory
(ROM), random access memory (RAM), digital/analog converter, timer, input/output end port etc., due to these units or
The operation principle of function module is all known well by those skilled in the art, so it will not be repeated its concrete structure and principle.
In the preferred embodiment, which is used for output pulse width modulated signal with the rotating speed of regulation motor.
The state parameter of velocity information and/or location information that detection unit detects is converted to digital signal by processor, and is carried out
It handles and generates corresponding control signal.Control signal in the present embodiment is pulsewidth modulation (PWM, Pulse Width
Modulation) signal, for controlling the voltage being applied on motor.Drive control circuit is by resistance, power switch driver
Composition.Wherein, power switch driver is made of several triodes, is used for the duty ratio of adjusting control signal, that is to say, that work(
Rate switch driver is according to the pwm signal received, to reduce the continuous output time of control signal in signal period, to logical
Overpower switch element controls the running speed of motor.It may be noted that power switch component can be semiconductor switch, at this
It is metal oxide semiconductor field effect transistor (MOSFET, Metal-Oxide-Semiconductor Field- in embodiment
Effect Transistor)。
Fig. 1 is please read together, and detection unit includes two first sensor (not shown), and is coordinated with the first sensor
It is located at first trigger member 162 in different location region for incuding the output rod 12.In the present embodiment, two first sensors
It is respectively arranged on the first test position (not shown) and the second test position (not shown) of shell, the first trigger member 162 is in an axial direction
It is set to the output rod 12.Output rod 12 is reciprocating, two the first trigger member 162 respectively with the first test position and second
First sensor induction in test position, to detect the location of output rod 12 region.Control unit passes through default
The reciprocating distance of output rod 12 in time, to obtain the reciprocating speed of output rod 12, and according to induction two
The order of a first sensor judges the direction of motion of output rod 12.
It may be noted that since rotating mechanism 14 is for driving output rod 12 reciprocating, the rotary motion of motor is turned
The reciprocating motion of output rod 12 is turned to, therefore the rotation of rotating mechanism 14 is with the reciprocating motion of output rod 12 that there are corresponding relationships.
As shown in Fig. 2, in another embodiment, detection unit includes two second sensor (not shown) and coordinates with second sensor
The second trigger member 182 for incuding the different steering positions of the rotating mechanism 14, two second sensors are respectively arranged on shell
Third test position (not shown) and the 4th test position (not shown), second trigger member 182 are circumferentially arranged in the rotation
Mechanism 14.When rotating mechanism 14 rotates, control unit incudes according to the cooperation of second sensor and the second trigger member 182, obtains
The velocity of rotation of the rotating mechanism 14 and different steering positions are taken, to which there are corresponding with output rod 12 according to rotating mechanism 14
Relationship obtains the location of the reciprocating speed of the output rod 12 and output rod 12 region.
The specific course of work of detection unit is illustrated with specific embodiment below, for example, the first test position and
Second test position is two test positions being axially arranged along output rod 12, and the first test position is divided in the second test position
First sensor there are two not setting.The primary complete reciprocating motion of output rod 12 includes the movement of stretching and retraction both direction,
First test position and the second test position are set gradually axially towards direction is stretched out, the first sensor far from rotating mechanism with
First test position corresponds to, and the first sensor close to rotating mechanism is corresponding with the second test position.
When output rod 12 towards stretch out direction move when, the first test position, the second test position first sensor not
Incuded, then can determine whether that output rod 12 is located at safety zone, output rod 12 continues to move, the first sensor of the first test position
Incuded, the first sensor of the second test position is not incuded, then judges that output rod 12 is located at transitional region, output rod 12 after
Reforwarding is dynamic, and the first sensor of the second test position is incuded, then judges that output rod 12 is located at insecure area.Similarly, second
The first sensor of test position is incuded first, then illustrates that output rod 12 is moved towards direction of recession, and the of the second test position
After one sensor is incuded, the first sensor of the first test position is not incuded, judges that output rod 12 is located at transitional region, defeated
Rod 12 continues to move, and when the first sensor of the first test position is incuded, then judges that output rod 12 is located at safety zone.
Wherein, the distance between the first test position and the second test position are S1, between two the first trigger member 162
Distance is S2, when the first sensor of the first test position is incuded, control unit starts timing, when the second test position
When second sensor is incuded, stop timing, time T, then the speed of output rod 12 is V=(S1+S2)/T.Similarly, output rod
12 move along the direction of recycling, can also calculate the speed of the movement of output rod 12.
It is appreciated that in other embodiments, can also set S1+S2For the reciprocating unidirectional stroke of output rod 12, then
Within a specified time, ten reciprocating motions have been made, for example, in 20 seconds, output rod 12 has made 5 reciprocating motions, then output rod is total
Produce 10 (S1+S2), then the reciprocating speed of output rod 12 is V=10 (S1+S2)/20=(S1+S2)/2。
In another embodiment, there are corresponding relationships with output rod 12 for rotating mechanism 14, can pass through third check bit
Set and the 4th test position on second sensor respectively with the sense along two circumferentially disposed the second trigger member 182 of rotating mechanism
The rotation direction, velocity of rotation and different steering positions of rotating mechanism 14 are answered and detect, to pass through the conversion of correspondence
Obtain the location of the reciprocating direction of motion of output rod 12, speed and output rod 12 region.
Specifically, rotating mechanism 14 drives output rod by the cooperation of turbine and worm structure and motor and eccentric structure
12 is reciprocating, and it is reciprocating to calculate output rod 12 by the correspondence between turbine and worm and output rod 12
Speed, the direction of motion and band of position etc. pass through the defeated of measurement motor for example, the transmission ratio of turbine and worm structure and motor is K
The rotating speed V of shaft1, calculate the rotating speed KV of worm screw1, to show that the reciprocating speed of output rod 12, worm screw rotation 1 are enclosed,
Then output rod completes primary complete reciprocating motion, and half-turn is then unidirectional movement, moreover according to third test position and the 4th
Second sensor in test position is examined with the induction along two circumferentially disposed the second trigger member 182 of rotating mechanism 14 respectively
The turned position for surveying rotating mechanism 14, to the corresponding band of position judged at output rod 12.
It is appreciated that the specific correspondence of rotating mechanism 14 and output rod 12, it can be according to rotating mechanism 14 and output rod
It depending on 12 fit structure, is not limited thereto, is completed once with output rod 12 for example, rotating mechanism 14 rotates the corresponding number of turns
Move back and forth corresponding, according to rotating mechanism 14, rotationally the number of turns judges that the position that output rod 12 is located at is region-wide.
It is appreciated that first sensor and second sensor are non-contact class sensor, for example, magnetoelectric transducer, light
Electric transducer, inductance sensor etc., are not limited thereto.First trigger member 162 and the second trigger member 182 are according to the class of sensor
Type is different and different, such as can be salient point, baffle or magnet steel etc..
It is appreciated that the number and test position of sensor are set depending on the type of specific sensor, for example, one
The measurement of above-mentioned state parameter can be completed in linear transducer.
The present invention is by the sensor that is arranged on shell and between the trigger member of output rod 12 or rotating mechanism 14
Induction, detect the location information of output rod 12, processor calculates the work of output rod 12 by the location information of output rod 12
The speed of reciprocating motion, when the reciprocating speed of output rod 12 reaches pre-set velocity, according to the speed of output rod 12 and residing position
Region is set, by the duty ratio of drive control circuit regulation motor, controls the rotating speed of motor, it is default to which output rod 12 to be parked in
The band of position, improve the safety and reliability that the power tool 10 of power tool 10 uses.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of power tool, including：
Shell；
Motor is contained in the shell；
Output rod, for driving work head；
Rotating mechanism can be used for the rotation output of the motor being transferred to the output rod reciprocating；
It is characterized in that, the power tool further includes：
Detection unit, the position for detecting the reciprocating location information of the output rod or rotating mechanism rotation
Information；
Control unit is connect with the detection unit and the motor respectively, the position for being detected based on the detection unit
Confidence ceases, and obtains the location of the reciprocating direction of motion of the output rod, speed and output rod region,
And control the rotating speed of the motor and start downtime, so that after the motor starts shutdown, the output rod is hindered by machinery
Buddhist nun's effect eventually settles at default safety zone.
2. power tool according to claim 1, which is characterized in that described control unit is additionally operable to control motor stopping
Process, when the speed of the reciprocating speed of the output rod or rotating mechanism rotation drops to the first pre-set velocity
Value, described control unit control the shutdown opportunity of the motor under the first pre-set velocity value herein.
3. power tool according to claim 2, which is characterized in that described control unit is additionally operable to make the output rod
The speed continuous sampling of the speed of reciprocating motion or rotating mechanism rotation, and the rotating speed of the motor is controlled, make described defeated
The reciprocating speed of rod or the speed of rotating mechanism rotation are fallen before in preset time to the second pre-set velocity
Value, then drops to the first pre-set velocity value, is rotated when the reciprocating speed of the output rod or the rotating mechanism
Speed drops to the first pre-set velocity value, and described control unit controls the motor stopping so that the output rod rest on it is pre-
If safety zone；
Wherein, the second pre-set velocity value is more than the first pre-set velocity value.
4. power tool according to claim 3, which is characterized in that the detection unit includes first sensor, and
Coordinate the first trigger member for being located at different location for incuding the output rod, the first sensor with the first sensor
It is two, two first sensors are respectively arranged on the first test position and the second test position of the shell, and described
One trigger member is axially disposed at the output rod；
Wherein, when the output rod is reciprocating, two first trigger member correspond to the first sensor, institute respectively
It states control unit according to the cooperation of the first sensor and first trigger member to be incuded, obtains the output rod and make reciprocal fortune
Dynamic location information, and then obtain the reciprocating speed of the output rod, and obtain the output rod the direction of motion and
Location region.
5. power tool according to claim 3, which is characterized in that the detection unit include second sensor and with institute
The second trigger member of second sensor cooperation induction is stated, the second sensor is two, two second sensor difference
Set on the third test position and the 4th test position of the shell, second trigger member is circumferentially arranged in the whirler
Structure；
Wherein, when the rotating mechanism rotates, described control unit is according to the second sensor and second trigger member
Cooperation induction, obtain the rotation direction of the rotating mechanism, velocity of rotation and different steering positions, and then obtain the output
The location of the reciprocating direction of motion of bar, speed and output rod region.
6. according to the power tool described in claim 1-5 any one, which is characterized in that described control unit includes processor
And drive control circuit, the state for the location information and/or velocity information that the processor is detected according to the detection unit
Parameter sends corresponding control signal, the drive control circuit be used for according to the output rod be located at the different direction of motion,
Speed and different location region control the rotating speed of the motor and start shutdown opportunity so that the output rod rest on it is described
Default safety zone.
7. power tool according to claim 6, which is characterized in that the processor memory contain the output rod make it is past
The pre-set velocity value moved again, the processor be additionally operable to according to the reciprocating sampled value of the output rod that detects with
The pre-set velocity value, which is made comparisons, motor speed described in operation control and starts shutdown opportunity.
8. power tool according to claim 7, which is characterized in that the drive control circuit is modulated for output pulse width
Signal is with the rotating speed of regulation motor.
9. a kind of control method for power tool, which is characterized in that include the following steps：
Detect the location information of output rod or the steering position information of rotating mechanism；
According to the location information detected, the reciprocating direction of motion of the output rod, speed and the output are obtained
The location of bar region；
According to the location of the reciprocating direction of motion of output rod, speed and output rod region, turning for motor is controlled
Speed and start shutdown opportunity, so that after the motor starts shutdown, output rod is eventually stopped at default safety by mechanical damping effect
Region.
10. it is according to claim 9 be used for power tool control method, which is characterized in that it is described made according to output rod it is past
The location of the direction of motion, speed and the output rod that move again region controls the rotating speed of motor and starts shutdown opportunity,
So that output rod is parked in default safety zone and specifically includes following steps：
Motor speed is controlled, keeps the speed of the rotation for the speed or rotating mechanism that output rod is reciprocating first in preset time
The second pre-set velocity value is dropped to, the first pre-set velocity value is then dropped to；
When the speed that the reciprocating speed of output rod or rotating mechanism rotate drops to the first pre-set velocity value, control motor
It shuts down, so that output rod rests on default safety zone.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510043731.9A CN105983945B (en) | 2015-01-28 | 2015-01-28 | Power tool and control method for power tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510043731.9A CN105983945B (en) | 2015-01-28 | 2015-01-28 | Power tool and control method for power tool |
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| CN105983945B true CN105983945B (en) | 2018-09-07 |
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| IT201800003883A1 (en) * | 2018-03-22 | 2019-09-22 | Gruppo Cimbali Spa | Lever brewing unit for coffee machines. |
| CN112140066B (en) * | 2019-06-11 | 2024-04-09 | 苏州宝时得电动工具有限公司 | Electric tool |
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| CN102300662A (en) * | 2009-01-30 | 2011-12-28 | 日立工机株式会社 | Reciprocating electric tool |
| CN102712083A (en) * | 2009-12-28 | 2012-10-03 | 株式会社牧田 | Motorized tool |
| CN202742353U (en) * | 2012-06-19 | 2013-02-20 | 浙江信源电器制造有限公司 | Safety protection device for electric tool |
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| EP1502710B1 (en) * | 2003-07-31 | 2008-07-23 | Makita Corporation | Power tool |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300662A (en) * | 2009-01-30 | 2011-12-28 | 日立工机株式会社 | Reciprocating electric tool |
| CN102712083A (en) * | 2009-12-28 | 2012-10-03 | 株式会社牧田 | Motorized tool |
| CN202742353U (en) * | 2012-06-19 | 2013-02-20 | 浙江信源电器制造有限公司 | Safety protection device for electric tool |
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