CN203887648U - Improved grinding machine - Google Patents
Improved grinding machine Download PDFInfo
- Publication number
- CN203887648U CN203887648U CN201420343492.XU CN201420343492U CN203887648U CN 203887648 U CN203887648 U CN 203887648U CN 201420343492 U CN201420343492 U CN 201420343492U CN 203887648 U CN203887648 U CN 203887648U
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- CN
- China
- Prior art keywords
- motor
- output shaft
- vibration eccentric
- eccentric balancing
- brushless
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- 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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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
An improved grinding machine comprises a motor, a motor cover, a machine shell, a grinding disc, an output shaft connected to the center of the grinding disc and a protective cover protecting the grinding disc. The motor is fixed to the motor cover and is a brushless motor. The protective cover and a motor assembly formed by fixing the motor to the motor cover are directly arranged together. The improved grinding machine further comprises a brushless motor rotor shaft, a brushless motor controller, cooling fan blades, a vibration eccentric balancing weight, a rotor shaft bearing pedestal and an eccentric balancing weight pressing plate. The brushless motor is electrically connected with the brushless motor controller. The cooling fan blades are fixedly arranged on the brushless motor rotor shaft. The vibration eccentric balancing weight and the vibration eccentric balancing weight pressing plate are arranged on the brushless rotor shaft in a matched mode through the rotor shaft bearing pedestal. The output shaft is arranged on the vibration eccentric balancing weight. The improved grinding machine has the advantages of being reasonable in structural design, long in service life, easy and comfortable to operate and the like.
Description
Technical field:
The utility model relates to a kind of electric tool, particularly relates to a kind of improved sander.
Background technology:
Sander is to take electric power as power, a kind of electric tool that drives the sand sheet High Rotation Speed on polishing pad end face that wall surface is polished and cleaned.This polishing mode is high more than manual grinding mode efficiency, its primary structure comprises motor, casing, motor shaft, pinion, gear wheel, gear shaft, final-stage gear, output shaft and polishing pad, wherein, described motor is arranged in described casing, described cone pinion and large bevel gear are arranged in gear-box, described pinion is arranged on described motor shaft, described polishing pad is arranged on described output shaft, described pinion and the engagement of described gear wheel drive the described gear shaft being fixed on described gear wheel to rotate, described gear shaft and the engagement of described final-stage gear drive and are fixed in the described output shaft rotation on described final-stage gear, then drive described polishing pad rotation.This traditional sander adopts brush motor, rely on the cooperation of carbon brush and commutator to realize commutation, need carbon brush to work, and exactly carbon brush is consumable accessory, after use a period of time, needing to change carbon brush just can work on, often exist and change, life-span is low, inconvenient, the problem of not environmental protection, because the existence of gear shift has increased the weight of complete machine, cause the very effort that operates, uncomfortable, be unfavorable for long operation, in addition brush motor will change rotating speed trouble, rotating speed improves limited, torque output is little by contrast, in use procedure, efficiency is not high, and the motor of this sander be fixed on the electric machine assembly forming in motor cover be not directly and head capsule be set together, but also need could realize connection by an electric motor end cap, performance on complete machine has impact, and increase installation procedure, to installment work, bring inconvenience, more trouble is installed, has also increased production cost simultaneously.Therefore, be necessary to be improved.
Utility model content:
Goal of the invention of the present utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of reasonable in design is provided, and high life operates light, comfortable sander.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of improved sander, comprise motor, motor cover, casing, polishing pad, be connected to polishing pad central authorities output shaft, protection polishing pad protective cover, wherein, described motor is fixed in described motor cover, between described protective cover and polishing pad, form the dust chamber being in communication with the outside, described motor is brushless electric machine, and described motor is fixed on the electric machine assembly forming in described motor cover and is directly set together with described protective cover; Also comprise brushless electric motor rotor axle, brushless motor controller, cooling fan blade, vibration eccentric balancing blocks, rotor shaft bearings seat and vibration eccentric balance block pressur plate, described brushless electric machine is electrically connected to described brushless motor controller, described cooling fan blade is fixedly installed on described brushless electric motor rotor axle, described vibration eccentric balancing blocks is equipped with on described brushless electric motor rotor axle by described rotor shaft bearings seat and described vibration eccentric balance block pressur plate, and described output shaft is arranged in described vibration eccentric balancing blocks.
On described casing, offer cooling air inlet, described cooling fan blade is arranged on the top of described vibration eccentric balancing blocks.
Also comprise dust flue, described dust flue is communicated with described dust chamber.
Also comprise rotor shaft bearings, described rotor shaft bearings is arranged on described rotor shaft bearings seat and with described armature spindle and coordinates.
Also comprise output shaft bearing, described output shaft bearing is arranged in described vibration eccentric balancing blocks and with described output shaft and coordinates.
Also comprise output shaft bearing pressing plate, described output shaft bearing pressing plate is supported on described output shaft bearing.
Also comprise self-dust-suction blade, described self-dust-suction blade is arranged in described vibration eccentric balancing blocks.
The utility model has the following advantages with respect to prior art tool:
1, owing to changing traditional brush motor into brushless electric machine, there is no carbon brush, substantially realizing zero dimension protects, very easy to use, effectively extended service life, in addition simultaneously, can also realize easily high rotating speed, when high speed low torque, running efficiency is high, and when low speed, has high torque (HT), has improved widely operating efficiency.
2, owing to adopting vibration eccentric balancing blocks to be arranged on described brushless electric motor rotor axle, saved complicated gear shift, make structure become simple, effectively reduced production cost, make complete machine weight greatly reduce simultaneously, make operation become light, comfortable, be more conducive to operator's manual working.
3, owing to adopting vibration eccentric balancing blocks to be arranged on described brushless electric motor rotor axle, eccentric balancing blocks has certain centrifugal force when High Rotation Speed, can drive the air in protective cover to form eddy current, discharges, thereby play the effect of self-dust-suction through dust flue.
4, owing to self-dust-suction blade being set in vibration eccentric balancing blocks, self-dust-suction blade rotary produces draught head, thereby reaches the effect of self-dust-suction.
5, motor is fixed on the electric machine assembly that forms in motor cover and is directly set together with protective cover, has reduced operation and assembling link, processes conveniently, has improved assembly precision, raising overall performance.
Accompanying drawing explanation:
Fig. 1 is a kind of embodiment cross-sectional schematic of the utility model.
Fig. 2 is the another kind of embodiment cross-sectional schematic of the utility model.
The specific embodiment:
As shown in Figure 1, as a kind of embodiment of the present utility model, this sander, comprise motor 1, motor cover 2, casing 3, polishing pad 4, be connected to polishing pad 4 central authorities output shaft 5, protection polishing pad 4 protective cover 6, wherein, described motor 1 is fixed in described motor cover 2, between described protective cover 6 and polishing pad 4, form the dust chamber 7 being in communication with the outside, described motor 1 is brushless electric machine, and described motor 1 is fixed on the electric machine assembly forming in described motor cover 2 and is directly set together with described protective cover 6; Also comprise brushless electric motor rotor axle 8, brushless motor controller 9, cooling fan blade 10, vibration eccentric balancing blocks 11, rotor shaft bearings seat 12 and vibration eccentric balance block pressur plate 13, described brushless electric machine is electrically connected to described brushless motor controller 9, described cooling fan blade 10 is fixedly installed on described brushless electric motor rotor axle 8, described vibration eccentric balancing blocks 11 is equipped with on described brushless electric motor rotor axle 8 by described rotor shaft bearings seat 12 and described vibration eccentric balance block pressur plate 13, and described output shaft 5 is arranged in described vibration eccentric balancing blocks 11.The utility model is owing to changing traditional brush motor into brushless electric machine, there is no carbon brush, substantially realizing zero dimension protects, very easy to use, effectively extended service life, in addition simultaneously, can also realize easily high rotating speed, when high speed low torque, running efficiency is high, and when low speed, has high torque (HT), has improved widely operating efficiency.Adopt vibration eccentric balancing blocks 11 to be arranged on described brushless electric motor rotor axle 8, saved complicated gear shift, make structure become simple, effectively reduced production cost, make complete machine weight greatly reduce simultaneously, make operation become light, comfortable, be more conducive to operator's manual working.In addition, adopt vibration eccentric balancing blocks 11 to be arranged on described brushless electric motor rotor axle 8, vibration eccentric balancing blocks 11 has certain centrifugal force when High Rotation Speed, can drive the air in protective cover 6 to form eddy current, through dust flue, discharge, thereby play the effect of self-dust-suction.And motor is fixed in motor cover 2 electric machine assembly forming and is directly set together with protective cover 6, reduced operation and assembling link, process conveniently, improved assembly precision, raising overall performance.
On described casing 3, offer cooling air inlet 14, described cooling fan blade 10 is arranged on the top of described vibration eccentric balancing blocks 11.Also comprise dust flue 18, described dust flue 18 is communicated with described dust chamber 7, also comprises rotor shaft bearings 15, and described rotor shaft bearings 15 is arranged on described rotor shaft bearings seat 12 and with described armature spindle 8 and coordinates.Also comprise output shaft bearing 16, described output shaft bearing 16 is arranged in described vibration eccentric balancing blocks 11 and with described output shaft 5 and coordinates.Also comprise output shaft bearing pressing plate 17, described output shaft bearing pressing plate 17 is supported on described output shaft bearing 16.
As shown in Figure 2, as another kind of embodiment of the present utility model, this sander, comprise motor 1, motor cover 2, casing 3, polishing pad 4, be connected to polishing pad 4 central authorities output shaft 5, protection polishing pad 4 protective cover 6, wherein, described motor 1 is fixed in described motor cover 2, between described protective cover 6 and polishing pad 4, form the dust chamber 7 being in communication with the outside, described motor 1 is brushless electric machine, and described motor 1 is fixed on the electric machine assembly forming in described motor cover 2 and is directly set together with described protective cover 6; Also comprise brushless electric motor rotor axle 8, brushless motor controller 9, cooling fan blade 10, vibration eccentric balancing blocks 11, rotor shaft bearings seat 12 and vibration eccentric balance block pressur plate 13, described brushless electric machine is electrically connected to described brushless motor controller 9, described cooling fan blade 10 is fixedly installed on described brushless electric motor rotor axle 8, described vibration eccentric balancing blocks 11 is equipped with on described brushless electric motor rotor axle 8 by described rotor shaft bearings seat 12 and described vibration eccentric balance block pressur plate 13, and described output shaft 5 is arranged in described vibration eccentric balancing blocks 11.Also comprise self-dust-suction blade 19, described self-dust-suction blade 19 is arranged in described vibration eccentric balancing blocks 11.The utility model is owing to changing traditional brush motor into brushless electric machine, there is no carbon brush, substantially realizing zero dimension protects, very easy to use, effectively extended service life, in addition simultaneously, can also realize easily high rotating speed, when high speed low torque, running efficiency is high, and when low speed, has high torque (HT), has improved widely operating efficiency.Adopt vibration eccentric balancing blocks 11 to be arranged on described brushless electric motor rotor axle 8, saved complicated gear shift, make structure become simple, effectively reduced production cost, make complete machine weight greatly reduce simultaneously, make operation become light, comfortable, be more conducive to operator's manual working.In addition,, owing in vibration eccentric balancing blocks 11, self-dust-suction blade 19 being set, 19 rotations of self-dust-suction blade produce draught head, thereby reach the effect of self-dust-suction.And motor is fixed in motor cover 2 electric machine assembly forming and is directly set together with protective cover 6, reduced operation and assembling link, process conveniently, improved assembly precision, raising overall performance.
Above-described embodiment is only for illustration of the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that not departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (7)
1. an improved sander, comprise motor, motor cover, casing, polishing pad, be connected to polishing pad central authorities output shaft, protection polishing pad protective cover, wherein, described motor is fixed in described motor cover, between described protective cover and polishing pad, form the dust chamber being in communication with the outside, it is characterized in that: described motor is brushless electric machine, described motor is fixed on the electric machine assembly forming in described motor cover and is directly set together with described protective cover; Also comprise brushless electric motor rotor axle, brushless motor controller, cooling fan blade, vibration eccentric balancing blocks, rotor shaft bearings seat and vibration eccentric balance block pressur plate, described brushless electric machine is electrically connected to described brushless motor controller, described cooling fan blade is fixedly installed on described brushless electric motor rotor axle, described vibration eccentric balancing blocks is equipped with on described brushless electric motor rotor axle by described rotor shaft bearings seat and described vibration eccentric balance block pressur plate, and described output shaft is arranged in described vibration eccentric balancing blocks.
2. a kind of improved sander according to claim 1, is characterized in that: on described casing, offer cooling air inlet, described cooling fan blade is arranged on the top of described vibration eccentric balancing blocks.
3. a kind of improved sander according to claim 1, is characterized in that: also comprise dust flue, described dust flue is communicated with described dust chamber.
4. a kind of improved sander according to claim 1, is characterized in that: also comprise rotor shaft bearings, described rotor shaft bearings is arranged on described rotor shaft bearings seat and with described armature spindle and coordinates.
5. a kind of improved sander according to claim 1, is characterized in that: also comprise output shaft bearing, described output shaft bearing is arranged in described vibration eccentric balancing blocks and with described output shaft and coordinates.
6. a kind of improved sander according to claim 4, is characterized in that: also comprise output shaft bearing pressing plate, described output shaft bearing pressing plate is supported on described output shaft bearing.
7. a kind of improved sander according to claim 1, is characterized in that: also comprise self-dust-suction blade, described self-dust-suction blade is arranged in described vibration eccentric balancing blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420343492.XU CN203887648U (en) | 2014-06-17 | 2014-06-17 | Improved grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420343492.XU CN203887648U (en) | 2014-06-17 | 2014-06-17 | Improved grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203887648U true CN203887648U (en) | 2014-10-22 |
Family
ID=51714096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420343492.XU Expired - Fee Related CN203887648U (en) | 2014-06-17 | 2014-06-17 | Improved grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203887648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215853A (en) * | 2015-09-14 | 2016-01-06 | 沈阳飞机工业（集团）有限公司 | A kind of from dedusting sanding and polishing device |
-
2014
- 2014-06-17 CN CN201420343492.XU patent/CN203887648U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215853A (en) * | 2015-09-14 | 2016-01-06 | 沈阳飞机工业（集团）有限公司 | A kind of from dedusting sanding and polishing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20210617 |