CN206795504U - A kind of frequency conversion angle electric mill power driven tools - Google Patents
A kind of frequency conversion angle electric mill power driven tools Download PDFInfo
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- CN206795504U CN206795504U CN201720388052.XU CN201720388052U CN206795504U CN 206795504 U CN206795504 U CN 206795504U CN 201720388052 U CN201720388052 U CN 201720388052U CN 206795504 U CN206795504 U CN 206795504U
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- induction motor
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- frequency induction
- rotating bar
- pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model discloses a kind of frequency conversion angle electric mill power driven tools.It is related to angle mill power tools technology field, the instrument can be made to automatically adjust to the rotating speed of variable frequency induction motor when pressure between head and polishing part is excessive according to angle grinder, and polishing speed is reliable.Including casing, the work head assembly for being arranged on casing front end, the variable frequency induction motor being arranged in casing, be arranged on the handle of casing rear end, be arranged on handle polishing switch and the frequency-variable controller provided with attaching plug, the output end of frequency-variable controller is connected electrically in one end of polishing switch, the input of variable frequency induction motor is connected electrically in the other end of polishing switch, variable frequency induction motor and work head assembly drive connection；Work head assembly makees head including angle grinder, and the pressure-detecting device that can be detected angle grinder and make head pressure size being connected with frequency-variable controller is provided with work head assembly.
Description
Technical field
It the utility model is related to angle mill power tools technology field, and in particular to a kind of frequency conversion angle electric mill power driven tools.
Background technology
Existing angle electric mill power driven tools when in use, when angle, make to go out when pressure between head and polishing part is excessive by grinder
The velocity of rotation that existing angle grinder makees head becomes slower.Existing angle electric mill power driven tools can not be made according to angle grinder head and polishing part it
Between pressure it is excessive when the rotating speed of motor is adjusted so that the polishing speed of existing angle electric mill power driven tools when in use is not
Reliably.
Utility model content
The utility model is to solve existing angle electric mill power driven tools above shortcomings, there is provided one kind can be ground according to angle
The rotating speed of variable frequency induction motor is automatically adjusted when pressure between work head and polishing part is excessive, polishing speed is reliable
A kind of frequency conversion angle electric mill power driven tools.
To achieve these goals, the utility model uses following technical scheme：
A kind of frequency conversion angle electric mill power driven tools, including casing, be arranged on the work head assembly of casing front end, be arranged in casing
Variable frequency induction motor, be arranged on the handle of casing rear end, be arranged on handle polishing switch and the change provided with attaching plug
Frequency controller, the output end of frequency-variable controller are connected electrically in one end of polishing switch, the input electrical connection of variable frequency induction motor
In the other end of polishing switch, variable frequency induction motor and work head assembly drive connection；Work head assembly makees head including angle grinder,
The pressure-detecting device that can be detected angle grinder and make head pressure size being connected with frequency-variable controller is provided with work head assembly.
When in use, the diagonal grinder of pressure-detecting device is made the pressure size of head and detected, and detected is worked as
Preceding pressure signal is transmitted to frequency-variable controller, and frequency-variable controller is by current pressure signal value and the pressure signal value pre-set
Size be compared.If the value of current pressure signal of the pressure signal value than pre-setting is big, frequency-variable controller is given
The instruction that variable frequency induction motor revs up, the rotating shaft of variable frequency induction motor are accelerated to rotate immediately, make head so as to increase angle grinder
Velocity of rotation, angle grinder is made the velocity of rotation of head in the range of the velocity of rotation pre-set.If current pressure letter
The value of number pressure signal of the value than pre-setting is small, then frequency-variable controller keeps the instruction of rotating speed, frequency conversion to variable frequency induction motor
The rotating shaft of induction machine keeps rotating immediately, so as to reduce the velocity of rotation that angle grinder makees head, angle grinder is made the rotation speed of head
Degree is in the range of the velocity of rotation pre-set.This programme can be made according to angle grinder pressure between head and polishing part it is excessive when pair
The rotating speed of variable frequency induction motor automatically adjusts, and polishing speed is reliable.
Preferably, pressure-detecting device includes cunning chamber, rotating bar, the gear for the lower ending opening being arranged on work head assembly
Circle, bearing, spring and pressure sensor, back-up ring are fixed in the vertical wall of sliding intracavitary, and pressure sensor is fixedly installed on sliding chamber
Inner top surface on, bearing slides up and down the cunning intracavitary being arranged on above back-up ring, and the both ends extruding of spring is connected to the upper table of bearing
On face and on the lower surface of pressure sensor, rotating bar is slidably arranged in sliding intracavitary, and the top of rotating bar is fixedly connected on
On the inner ring of bearing, the lower end of rotating bar is located at outside the lower port of sliding chamber；The rotating shaft of variable frequency induction motor turns with rotating bar driving
Dynamic connection, pressure sensor electrically connect with frequency-variable controller, and angle grinder is fixedly connected on the lower end of rotating bar as head.
When in use, if angle grinder is made head and upwarded pressure more than pressure is set, rotating bar past will move up
It is dynamic.After rotating bar up moves, rotating bar can promote bearing up to move, and the result that bearing up moves can compress bearing
On pressure sensor, the current pressure signal detected is transmitted to VFC by pressure sensor by after the pressure of bearing
Device, frequency-variable controller automatically adjust to the rotating speed of variable frequency induction motor immediately, and reliability is high.
Preferably, be axially arranged with spline in rotating bar, it is provided with the rotating shaft of variable frequency induction motor and spline
The helicla flute of matching, the rotating shaft of variable frequency induction motor can drive rotating bar to rotate by the cooperation of helicla flute and spline.
The rotating shaft of variable frequency induction motor drives rotating bar to rotate by spline, and rotating bar can glide along on spline
Dynamic, reliability is high.
The utility model can reach following effect：
The utility model is simple in construction, can be made according to angle grinder pressure between head and polishing part it is excessive when to variable frequency induction
The rotating speed of motor automatically adjusts, and polishing speed is reliable.
Brief description of the drawings
Fig. 1 is a kind of attachment structure schematic diagram of the present utility model.
Fig. 2 is that angle grinder is made one when head is upwarded pressure less than setting pressure at the utility model pressure-detecting device
Kind state attachment structure schematic diagram.
Fig. 3 is that angle grinder is made one when head is upwarded pressure more than setting pressure at the utility model pressure-detecting device
Kind state attachment structure schematic diagram.
Fig. 4 is a kind of circuit theory attachment structure schematic block diagram of the present utility model.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：A kind of frequency conversion angle electric mill power driven tools, referring to shown in Fig. 1-4, including casing 7, it is arranged on casing front end
Work head assembly 2, the variable frequency induction motor 3 being arranged in casing, it is arranged on the handle 10 of casing rear end, is arranged on handle
Polishing switch 11 and the frequency-variable controller 6 provided with attaching plug 5, the output end of frequency-variable controller are connected electrically in the one of polishing switch
End, the input of variable frequency induction motor are connected electrically in the other end of polishing switch, and variable frequency induction motor drives with work head assembly
Connection；The head assembly that works includes angle grinder and makees first 1, and angle mill can be detected provided with what is be connected with frequency-variable controller in work head assembly
The pressure-detecting device 4 for the head pressure size that works.
Pressure-detecting device include being arranged on the cunning chamber 14 of lower ending opening on work head assembly, rotating bar 13, back-up ring 20,
Bearing 17, spring 15 and pressure sensor 12, pressure sensor are fixedly installed on the inner top surface of sliding chamber, and back-up ring is fixed on sliding chamber
In interior vertical wall, bearing slides up and down the cunning intracavitary being arranged on above back-up ring, and the both ends extruding of spring is connected to the upper of bearing
On surface and on the lower surface of pressure sensor, rotating bar is slidably arranged in sliding intracavitary, and the top of rotating bar is fixedly connected
On the inner ring 16 of bearing, the lower end of rotating bar is located at outside the lower port of sliding chamber；The rotating shaft 21 of variable frequency induction motor and rotating bar
Driving rotation connection, pressure sensor electrically connect with frequency-variable controller, and angle grinder is fixedly connected on the lower end of rotating bar as head.
Spline 19 is axially arranged with rotating bar, the spiral shell matched with spline is provided with the rotating shaft of variable frequency induction motor
Spin slot 18, the rotating shaft of variable frequency induction motor can drive rotating bar to rotate by the cooperation of helicla flute and spline.
The stator of variable frequency induction motor is the stator of three-phase windings, and the rotor of variable frequency induction motor is mouse cage type structure and tool
There is the rotor of double insulating structure.The instrument also includes the memory 22 and display 23 being connected with frequency-variable controller.This is specially
Frequency-variable controller in profit is single-chip microcomputer or microcontroller, the model M30260F8TGP#U3 of the microcontroller.
When in use, the diagonal grinder of pressure-detecting device is made the pressure size of head and detected, and detected is worked as
Preceding pressure signal is transmitted to frequency-variable controller, and frequency-variable controller is by current pressure signal value and the pressure signal value pre-set
Size be compared.If the value of current pressure signal of the pressure signal value than pre-setting is big, frequency-variable controller is given
The instruction that variable frequency induction motor revs up, the rotating shaft of variable frequency induction motor are accelerated to rotate immediately, make head so as to increase angle grinder
Velocity of rotation, angle grinder is made the velocity of rotation of head in the range of the velocity of rotation pre-set.If current pressure letter
The value of number pressure signal of the value than pre-setting is small, then frequency-variable controller keeps the instruction of rotating speed, frequency conversion to variable frequency induction motor
The rotating shaft of induction machine keeps rotating immediately, so as to reduce the velocity of rotation that angle grinder makees head, angle grinder is made the rotation speed of head
Degree is in the range of the velocity of rotation pre-set.This programme can be made according to angle grinder pressure between head and polishing part it is excessive when pair
The rotating speed of variable frequency induction motor automatically adjusts, and polishing speed is reliable.If angle grinder makees head and upwarded pressure to be more than
Pressure is set, then rotating bar will be moved up.After rotating bar up moves, rotating bar can promote bearing up to move, axle
Holding the result up moved can be such that bearing is pressed on pressure sensor, and pressure sensor after the pressure of bearing by will detect
Current pressure signal be transmitted to frequency-variable controller, frequency-variable controller is adjusted automatically to the rotating speed of variable frequency induction motor immediately
Section, reliability are high.The rotating shaft of variable frequency induction motor by spline drive rotating bar rotate, rotating bar can in spline on glide
Dynamic, reliability is high.
Claims (3)
1. a kind of frequency conversion angle electric mill power driven tools, it is characterised in that including casing, be arranged on the work head assembly of casing front end, set
Put the variable frequency induction motor in casing, be arranged on the handle of casing rear end, the polishing being arranged on handle switch and provided with electricity
The frequency-variable controller of source plug, the output end of frequency-variable controller are connected electrically in one end of polishing switch, variable frequency induction motor it is defeated
Enter the other end that end is connected electrically in polishing switch, variable frequency induction motor and work head assembly drive connection；Work head assembly includes
Angle grinder makees head, and the pressure that can be detected angle grinder and make head pressure size being connected with frequency-variable controller is provided with work head assembly
Detection means.
2. a kind of frequency conversion angle electric mill power driven tools according to claim 1, it is characterised in that pressure-detecting device includes setting
Cunning chamber, rotating bar, back-up ring, bearing, spring and the pressure sensor of lower ending opening on work head assembly, pressure sensor are solid
Surely it is arranged on the inner top surface of sliding chamber, back-up ring is fixed in the vertical wall of sliding intracavitary, and bearing, which slides up and down, to be arranged on above back-up ring
Cunning intracavitary, the both ends extruding of spring is connected on the upper surface of bearing and the lower surface of pressure sensor on, rotating bar is slided
Sliding intracavitary is arranged on, and the top of rotating bar is fixedly connected on the inner ring of bearing, and the lower end of rotating bar is located under sliding chamber
Outside port；The rotating shaft of variable frequency induction motor is rotatablely connected with rotating bar driving, and pressure sensor electrically connects with frequency-variable controller, angle
Grinder is fixedly connected on the lower end of rotating bar as head.
3. a kind of frequency conversion angle electric mill power driven tools according to claim 2, it is characterised in that flower is axially arranged with rotating bar
Keyway, is provided with the helicla flute matched with spline in the rotating shaft of variable frequency induction motor, and the rotating shaft of variable frequency induction motor can pass through
The cooperation of helicla flute and spline drives rotating bar to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720388052.XU CN206795504U (en) | 2017-04-13 | 2017-04-13 | A kind of frequency conversion angle electric mill power driven tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720388052.XU CN206795504U (en) | 2017-04-13 | 2017-04-13 | A kind of frequency conversion angle electric mill power driven tools |
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| Publication Number | Publication Date |
|---|---|
| CN206795504U true CN206795504U (en) | 2017-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720388052.XU Active CN206795504U (en) | 2017-04-13 | 2017-04-13 | A kind of frequency conversion angle electric mill power driven tools |
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| Country | Link |
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| CN (1) | CN206795504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114434324A (en) * | 2022-02-10 | 2022-05-06 | 浙江久立特材科技股份有限公司 | Grinding device with pressure feedback |
-
2017
- 2017-04-13 CN CN201720388052.XU patent/CN206795504U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114434324A (en) * | 2022-02-10 | 2022-05-06 | 浙江久立特材科技股份有限公司 | Grinding device with pressure feedback |
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