CN107671360A - For reducing the control method of reciprocating saw vibration - Google Patents
For reducing the control method of reciprocating saw vibration Download PDFInfo
- Publication number
- CN107671360A CN107671360A CN201710808753.9A CN201710808753A CN107671360A CN 107671360 A CN107671360 A CN 107671360A CN 201710808753 A CN201710808753 A CN 201710808753A CN 107671360 A CN107671360 A CN 107671360A
- Authority
- CN
- China
- Prior art keywords
- driving current
- current value
- reciprocating saw
- motor
- value
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
Abstract
The invention provides the control method for reducing reciprocating saw vibration, belong to field of power tools, after being included in predetermined interval, obtain the first driving current value of input motor；If the first driving current value is less than predetermined threshold value, the first tachometer value is obtained, makes motor be rotated by the first tachometer value；Obtain the second driving current value of input motor；If the second driving current value is higher than predetermined threshold value, the second tachometer value corresponding with the second driving current value is obtained, makes motor be rotated by the second tachometer value；Foregoing teachings are repeated, until after detecting that switch lifts, terminate adjustment process.By obtaining driving current value, and then motor speed is adjusted according to driving current value, reciprocating saw can be made under non-cutting state, the rotating speed of built-in motor is reduced as far as possible, so as to reduce the vibration of reciprocating saw and noise, prevent in cutting process because reciprocating saw itself vibration causes the skew of cutting position, the final accuracy for improving cutting.
Description
Technical field
The invention belongs to field of power tools, more particularly to a kind of control method for being used to reduce reciprocating saw vibration.
Background technology
Existing reciprocating saw is in order to realize the reciprocating motion of saw blade part, usually using eccentric structure.But eccentric structure
While simple realization moves back and forth, inevitably cause the vibration of reciprocating saw in itself；And with motor in reciprocating saw
The raising of rotating speed, vibration can be stronger.
Because reciprocating saw is frequently used for the fine cut to workpiece, therefore when the vibration of reciprocating saw strengthens to a certain extent
When, the precise positioning of cutting position can be impacted, reduce the accuracy of reciprocal saw cut.
The content of the invention
In order to solve shortcoming and defect present in prior art, the invention provides adjust electricity by current operating state
Rotating speed, reduce cutting vibrating, improve the control method for being used to reduce reciprocating saw vibration of cutting accuracy.
In order to reach above-mentioned technical purpose, the invention provides the control method for reducing reciprocating saw vibration, the control
Method processed is used to be adjusted the rotating speed of motor in reciprocating saw, the control method, including：
Step 1: in the case where switch is pressed, electrical power is made to be rotated by acquiescence tachometer value；
Step 2: after predetermined interval, the first driving current value of input motor is obtained；
Step 3: if the first driving current value is less than predetermined threshold value, corresponding with the first driving current value first is obtained
Tachometer value, motor is made to be rotated by the first tachometer value；
Step 4: and after predetermined interval, obtain input motor the second driving current value；
Step 5: if the second driving current value is higher than predetermined threshold value, corresponding with the second driving current value second is obtained
Tachometer value, motor is made to be rotated by the second tachometer value；
Step 6, the content as described in step 2 to step 5 is repeated, until after detecting that switch lifts, terminate and adjust
It has suffered journey.
Optionally, the step 5, in addition to：
If the second driving current value is higher than predetermined threshold value, the second tachometer value corresponding with the second driving current value is obtained,
Motor is made to be rotated by the second tachometer value.
Optionally, the step 6, including：
When switch lifts, motor stalls are made.
Optionally, the step 5 also includes：
If the second driving current value is less than the first driving current value, motor is made to be rotated by the first tachometer value.
Optionally, in the reciprocating saw, provided with the speed probe for detecting motor speed in real time.
Optionally, the saw blade with motor connection is provided with reciprocating saw, cutting workpiece is not treated when the saw blade of reciprocating saw and enters
During row cutting, speed probe sends the first information to the control chip being arranged in reciprocating saw, makes the latter according to the first information
Generate the driving current value including the first driving current value and the second driving current value.
Optionally, when saw blade touches workpiece to be cut, motor is caused rotating speed to reduce by resistance, and speed probe is to setting
Put control chip in reciprocating saw and send the first information, make the latter according to first information generation include the first driving current value with
Driving current value including second driving current value.So that the control chip in reciprocating saw can be believed according to the first information and second
Motor speed in reciprocating saw is adjusted breath.
The beneficial effect that technical scheme provided by the invention is brought is：
Motor speed is adjusted by obtaining driving current value, and then according to driving current value, reciprocating saw can be made
Under non-cutting state, the rotating speed of built-in motor is reduced as far as possible, so as to reduce the vibration of reciprocating saw and noise, prevents from cutting
Because reciprocating saw itself vibration causes the skew of cutting position, the final accuracy for improving cutting during cutting.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet provided by the present invention for reducing the control method of reciprocating saw vibration；
Fig. 2 is the detailed process schematic diagram of control method provided by the invention.
Embodiment
To make the structure of the present invention and advantage clearer, the structure of the present invention is made further below in conjunction with accompanying drawing
Description.
Embodiment one
The invention provides the control method for reducing reciprocating saw vibration, the control method is used for electric in reciprocating saw
The rotating speed of machine is adjusted, as shown in figure 1, the control method, including：
Step 1: in the case where switch is pressed, electrical power is made to be rotated by acquiescence tachometer value；
Step 2: after predetermined interval, the first driving current value of input motor is obtained；
Step 3: if the first driving current value is less than predetermined threshold value, corresponding with the first driving current value first is obtained
Tachometer value, motor is made to be rotated by the first tachometer value；
Step 4: and after predetermined interval, obtain input motor the second driving current value；
Step 5: if the second driving current value is higher than predetermined threshold value, corresponding with the second driving current value second is obtained
Tachometer value, motor is made to be rotated by the second tachometer value；
Step 6, the content as described in step 2 to step 5 is repeated, until after detecting that switch lifts, terminate and adjust
It has suffered journey.
In force, in order to reduce the vibration of reciprocating saw, the embodiment of the present application proposes the control method for reciprocating saw,
By carrying out implementation regulation to the rotating speed of motor in reciprocating saw in use, the rotating speed of motor is reduced as far as possible, so as to
Reduce the vibration of reciprocating saw.
Specifically, in order to improve the availability of reciprocating saw, the driving current value of input motor is obtained every preset time, with
It is easy to that the rotating speed of motor is adjusted according to driving current value.In order to improve the accuracy of rotational speed regulation, driving electricity here
Flow valuve comprises at least the first driving current value and the second driving current value.
On the premise of reciprocating saw is powered, after the switch of reciprocating saw is pressed, electrical power, and turned with giving tacit consent to tachometer value
It is dynamic.After certain time intervals, the control chip in reciprocating saw gets the first driving current value of motor rotation, by
Light Condition is in current reciprocating saw, the motor that driving reciprocating saw motor rotates is substantially at the state of zero load, this time control
Coremaking piece obtains the first tachometer value corresponding with the first driving current value, is rotated by the first tachometer value motor, here
The first tachometer value be less than tachometer value under normal operating conditions, why make motor be operated with the tachometer value here, be for
Reduce reciprocating saw vibration in a non-operative state and noise.
When reciprocating saw, which treats cutting workpiece, to be cut, because workpiece to be cut is to resistance caused by reciprocating saw so that
Motor speed is inevitably reduced, and current value is detected for the situation continued, until detecting higher than pre-set threshold value
Current value the second driving current value, under the driving of the second driving current value, the rotating speed of motor improves, reciprocal so as to improve
The cutting power of saw.
If it is worth noting that, in above process, detect and above-mentioned control process terminated while switch lifts, because
For the demand of regulation is now not present.
Machine No Load Start, output speed and power have reduction (concrete numerical value is by programme-control), now the sky of complete machine
Carrying shock value can significantly be cut in, and make the body-sensing of operator more comfortable；The reduction of no-load power also can be significantly simultaneously
Reduce the no-load power consumption of complete machine；When sawing workpieces, machine operation electric current increases to setting numerical value, opens full gear operation, until
Current reduction rotating speed declines again or trip switch shutdown.
Motor speed is adjusted by obtaining driving current value, and then according to driving current value, reciprocating saw can be made
Under non-cutting state, the rotating speed of built-in motor is reduced as far as possible, so as to reduce the vibration of reciprocating saw and noise, prevents from cutting
Because reciprocating saw itself vibration causes the skew of cutting position, the final accuracy for improving cutting during cutting.
Optionally, as shown in Fig. 2 the step 5, in addition to：
If the second driving current value is higher than predetermined threshold value, the second tachometer value corresponding with the second driving current value is obtained,
Motor is made to be rotated by the second tachometer value.
In force, when reciprocating saw, which treats cutting workpiece, to be cut, because workpiece to be cut is to caused by reciprocating saw
Resistance so that motor speed inevitably reduces,.
Unlike above, the specific method proposed here is to be produced for the situation and be higher than the first driving current value
The second current value, until detect the electric current higher than pre-set threshold value under the driving of the second driving current value, the rotating speed of motor
Improve, so as to improve the cutting power of reciprocating saw.
Here why by the driving current value got compared with the first driving current value, not with hereinbefore obtaining
Take the predetermined threshold value referred to during the first driving current value to be compared, allow in actual use, once current flow
Value be higher than the first driving current value, show that reciprocating saw has touched object to be cut, relative to higher than the first driving current
The predetermined threshold value of value is compared, once driving current value is higher than the first driving current value, present drive current value just is defined as into
Two driving current values, and make motor be rotated as the second tachometer value corresponding with the second driving current value, relative to step 5 above
The scheme with predetermined threshold value contrast of middle proposition, this method can shorten the response time of reciprocating saw motor speed, improve reciprocal
The use feeling of saw.
Optionally, the step 6, including：
When switch lifts, motor stalls are made.
In force, the switch in reciprocating saw represents the demand for control whether rotated to reciprocating saw motor, when switch is pressed
When, demonstrate the need for being cut using reciprocating saw, electrical power rotates；When switch lifts, show currently be cut
Cut, motor power-off stalling.
Optionally, the step 5 also includes：
If the second driving current value is less than the first driving current value, motor is made to be rotated by the first tachometer value.
In force, if working as the second driving current value is less than the first driving current value, show that current reciprocating saw is being treated
During cutting workpiece is cut, there is exception in the circuit that control chip obtains motor drive current, it is therefore desirable to keeps
Motor speed, so as to maintain the cutting power of reciprocating saw.
Optionally, in the reciprocating saw, provided with the speed probe for detecting motor speed in real time.
In force, in order to further improve the control accuracy of motor, it is additionally provided with reciprocating saw for detecting electricity in real time
The speed probe of machine rotating speed.
The core component of speed probe is the element for using mistor as detection, then by brand-new signal transacting
Circuitorder noise reduces, and function is more perfect.By being contrasted with the output waveform of other type tooth speed probes, rotating speed is measured
Error is minimum and linear characteristic to have good uniformity sensings object be magnetic material or permeability magnetic material, such as magnet steel, iron
With electrical sheet etc..When magnetic or permeability magnetic material that raised (or depression) is carried on measured body, when being rotated with testee, sensing
Device exports the pulse signal related to speed, reaches the purpose to test the speed.
Based on the speed probe being set forth above, the saw blade with motor connection is provided with reciprocating saw, when the saw of reciprocating saw
Piece does not treat cutting workpiece when being cut, and speed probe sends the first letter to the control chip being arranged in reciprocating saw
Breath, the latter is made to generate the driving current value including the first driving current value and the second driving current value according to the first information.
Opposite, when saw blade touches workpiece to be cut, motor is caused rotating speed to reduce by resistance, and speed probe is to setting
Put control chip in reciprocating saw and send the first information, make the latter according to first information generation include the first driving current value with
Driving current value including second driving current value.So that the control chip in reciprocating saw can be believed according to the first information and second
Motor speed in reciprocating saw is adjusted breath.
The invention provides the control method for reducing reciprocating saw vibration, after being included in predetermined interval, obtains input electricity
First driving current value of machine；If the first driving current value is higher than predetermined threshold value, the first tachometer value is obtained, makes motor by first
Tachometer value rotates；Obtain the second driving current value of input motor；If the second driving current value is less than the first driving current value,
The second tachometer value corresponding with the second driving current value is obtained, makes motor be rotated by the second tachometer value；, foregoing teachings are repeated, directly
To after detecting that switch lifts, adjustment process is terminated.Motor is turned by obtaining driving current value, and then according to driving current value
Speed is adjusted, and can make reciprocating saw under non-cutting state, reduces the rotating speed of built-in motor as far as possible, reciprocal so as to reduce
The vibration of saw and noise, prevent that final improve is cut because reciprocating saw itself vibration causes the skew of cutting position in cutting process
The accuracy cut.
Each sequence number in above-described embodiment is for illustration only, does not represent the elder generation during the assembling or use of each part
Order afterwards.
Embodiments of the invention are the foregoing is only, are not intended to limit the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (7)
1. the control method for reducing reciprocating saw vibration, the control method is used to adjust the rotating speed of motor in reciprocating saw
It is whole, it is characterised in that the control method, including：
Step 1: in the case where switch is pressed, electrical power is made to be rotated by acquiescence tachometer value；
Step 2: after predetermined interval, the first driving current value of input motor is obtained；
Step 3: if the first driving current value is less than predetermined threshold value, the first rotating speed corresponding with the first driving current value is obtained
Value, makes motor be rotated by the first tachometer value；
Step 4: and after predetermined interval, obtain input motor the second driving current value；
Step 5: if the second driving current value is higher than predetermined threshold value, the second rotating speed corresponding with the second driving current value is obtained
Value, makes motor be rotated by the second tachometer value；
Step 6, the content as described in step 2 to step 5 is repeated, until after detecting that switch lifts, termination adjusted
Journey.
2. the control method according to claim 1 for being used to reduce reciprocating saw vibration, it is characterised in that the step 5,
Also include：
If the second driving current value is higher than predetermined threshold value, the second tachometer value corresponding with the second driving current value, order electricity are obtained
Machine is rotated by the second tachometer value.
3. the control method according to claim 1 for being used to reduce reciprocating saw vibration, it is characterised in that the step 6,
Including：
When switch lifts, motor stalls are made.
4. the control method according to claim 1 for being used to reduce reciprocating saw vibration, it is characterised in that the step 5 is also
Including：
If the second driving current value is less than the first driving current value, motor is made to be rotated by the first tachometer value.
5. the control method according to claim 1 for being used to reduce reciprocating saw vibration, it is characterised in that in the reciprocating saw
In, provided with the speed probe for detecting motor speed in real time.
6. the control method according to claim 5 for being used to reduce reciprocating saw vibration, it is characterised in that be provided with reciprocating saw
With the saw blade of motor connection, when the saw blade of reciprocating saw, which does not treat cutting workpiece, to be cut, speed probe is to being arranged on
Control chip in reciprocating saw sends the first information, makes the latter include the first driving current value and second according to first information generation
Driving current value including driving current value.
7. the control method according to claim 5 for being used to reduce reciprocating saw vibration, it is characterised in that when saw blade touches
During workpiece to be cut, motor is caused rotating speed to reduce by resistance, and speed probe is sent to the control chip being arranged in reciprocating saw
The first information, make driving electricity of the latter according to first information generation including the first driving current value and the second driving current value
Flow valuve.So that the control chip in reciprocating saw can be carried out according to the first information and the second information to the motor speed in reciprocating saw
Regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710808753.9A CN107671360A (en) | 2017-09-09 | 2017-09-09 | For reducing the control method of reciprocating saw vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710808753.9A CN107671360A (en) | 2017-09-09 | 2017-09-09 | For reducing the control method of reciprocating saw vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107671360A true CN107671360A (en) | 2018-02-09 |
Family
ID=61134956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710808753.9A Pending CN107671360A (en) | 2017-09-09 | 2017-09-09 | For reducing the control method of reciprocating saw vibration |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112809087A (en) * | 2019-11-15 | 2021-05-18 | 苏州宝时得电动工具有限公司 | Reciprocating saw |
| CN115706555A (en) * | 2021-08-06 | 2023-02-17 | 南京泉峰科技有限公司 | Electric tool and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112809087A (en) * | 2019-11-15 | 2021-05-18 | 苏州宝时得电动工具有限公司 | Reciprocating saw |
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| CN115706555B (en) * | 2021-08-06 | 2023-12-19 | 南京泉峰科技有限公司 | Electric tool and control method thereof |
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