CN211940308U - Novel balanced structure grinder - Google Patents
Novel balanced structure grinder Download PDFInfo
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- CN211940308U CN211940308U CN201922438189.3U CN201922438189U CN211940308U CN 211940308 U CN211940308 U CN 211940308U CN 201922438189 U CN201922438189 U CN 201922438189U CN 211940308 U CN211940308 U CN 211940308U
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- rotor
- bottom plate
- balancing block
- sander
- balanced structure
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Abstract
The utility model relates to the technical field of electric tools, in particular to a novel balanced structure sander, which comprises a bottom plate, a bearing is pressed in the bottom plate, a balancing block is arranged in the bearing, the balancing block is fixed on a rotor through a screw, a flat cushion is arranged between the balancing block and the rotor, the sander also comprises a dust absorption fan blade, the dust absorption fan blade is arranged on the rotor and is positioned above the balancing block, the shape of the balancing block is that the part of the cuboid, which is close to the right side, extends upwards, the whole body is in an inverted L shape, the balance weight of the balancing block is positioned on the left side of the axis of the rotor, the eccentricity is positioned on the right side of, and the balance weight is in the opposite eccentric direction, so the centrifugal force generated by the rotation of the bottom plate component driven by the rotation of the rotor is just opposite to the centrifugal force generated by the rotation of the gravity center of the balance weight, and the gravity center positions of the two are in the same level, so that the vibration generated when the machine runs can be counteracted to the maximum extent.
Description
Technical Field
The utility model belongs to the technical field of electric tool technique and specifically relates to a novel balanced structure grinder.
Background
According to statistics of China electric tool industry production and marketing demand prediction and transformation upgrade analysis reports, electric tools are mainly divided into metal cutting electric tools, grinding electric tools, assembling electric tools and electric tools for railways. Common electric tools are electric drills, electric grinders, electric wrenches and electric screwdrivers, electric hammers and impact drills, concrete vibrators, and electric planers.
A sander is a mechanical device used for finishing sanding work. Sanding is a synonym of polishing, and refers to processing some materials and objects which are not flat, have uneven thickness or do not meet the process requirements into standard parts which have smooth surfaces and even thickness and meet various process requirements through mechanical equipment, so that the sanding machine is widely applied to various fields such as machinery, home decoration and the like. The sander mainly comprises a motor, a transmission assembly, a bottom plate assembly and the like, wherein the transmission assembly comprises an eccentric piece. In the working state, the transmission assembly transmits the rotary motion of the motor to the eccentric motion of the bottom plate. The lower surface of the base plate is provided with sand paper or other grinding pieces, and the grinding pieces move along with the base plate so as to grind and polish the processed surface.
At present, the ubiquitous problem of current grinder is: the eccentric motion of bottom plate makes the grinder be in unbalanced state to arouse the vibration of whole grinder, the user is when long-time operation, feels hand fatigue very easily, and can not be fine control grinder, especially dull and stereotyped sand vibration amplitude is great, and the grinder needs to predetermine certain space and supplies the user to hold when the operation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses a novel balanced structure grinder improves balanced structure on prior art, and balanced structure adopts eccentric and balanced integrative powder metallurgy spare, and balanced focus offsets with the gravity of work subassembly and reaches the optimization, need not to tear the removable balanced structure of machine, and the eccentric motion of solving the bottom plate makes the grinder be in unbalanced state to arouse the problem of the vibration of whole grinder.
The utility model discloses a specific technical scheme as follows: a novel sander with a balance structure comprises a bottom plate made of aluminum materials, a bearing is arranged in the bottom plate in a press-fitting mode, a balance block is arranged in the bearing, and the balance block is fixed on a rotor of the sander through screws.
In the technical scheme, the balance mechanism is improved in the prior art, the balance block is used for replacing the prior balance mechanism, and the balance block adopts the eccentric and balance integrated technology, so that the gravity center of balance and the gravity of the working assembly are offset to achieve optimization, and the problem that the sanding machine is in an unbalanced state due to the eccentric motion of the bottom plate in the existing sanding machine, and the vibration of the whole sanding machine is caused is solved.
The utility model discloses a further improvement still is provided with the flat pad that rubber materials made between balancing piece and the rotor. The flat pad made of rubber material is used in the sander, so that certain kinetic energy can be absorbed, and vibration is further reduced.
The utility model discloses a further improvement, the balancing piece adopts the powder metallurgy material to make, compares traditional aluminum alloy's fan blade, and this kind of material price has more the counter weight of competitive advantage balancing piece on the left side of rotor axis, and eccentric is on the right of rotor axis.
The balance weight has 1mm of eccentricity in the inner hole, and the balance weight is in the opposite direction of eccentricity, so that the centrifugal force generated by the rotation of the bottom plate component driven by the rotation of the rotor just generates the centrifugal force in the opposite direction with the centrifugal force generated by the rotation of the gravity center of the balance weight, and the gravity center positions of the balance weight and the balance weight are positioned at the same level, so that the vibration generated during the operation of the machine can be counteracted to the maximum.
The utility model is further improved, the shape of the balance weight is that the part of the cuboid close to the right side extends upwards, and the whole body is in an inverted L shape; the dust collection fan blade is arranged on the rotor and is positioned above the balance block.
The utility model has the advantages that: the utility model discloses an improve on current technique, specifically speaking, be exactly using the balancing weight to replace the balance mechanism among the original technique, there is 1 mm's off-centre in this balancing weight hole, and the counter weight is in eccentric opposite direction, so rotate the centrifugal force that the bottom plate subassembly that drives by the rotor rotates the production, just in time with the rotatory centrifugal force that produces of balancing weight focus in opposite direction, and the focus position between them is located same level, so can the maximize offset the vibrations that the machine produced when moving, thereby arouse the problem of the vibration of whole grinder.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the middle balance weight of the present invention.
In the figure, 1-balance block, 2-bearing, 3-flat pad, 4-screw, 5-rotor, 6-bottom plate, 7-dust-absorbing fan blade.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
Example (b): as shown in fig. 1, a novel balanced structure sander comprises a bottom plate 6 made of aluminum materials, a bearing 2 is pressed in the bottom plate 6, a balance block 1 is placed in the bearing 2, the balance block 1 is fixed on a rotor 5 of the sander through a screw 4, a flat pad 3 made of rubber materials is further arranged between the balance block 1 and the rotor 5, and the novel balanced structure sander further comprises a dust collection fan blade 7, and the dust collection fan blade 7 is arranged above the balance block 1 on the rotor 5.
As shown in fig. 2, the balancing block 1 is made of powder metallurgy material, compared with the traditional aluminum alloy fan blade, the material price has more competitive advantage, the shape of the balancing block 1 is that the part near the right side on the cuboid extends upwards, the balancing block is in inverted 'L' shape, the balancing weight of the balancing block 1 is on the left side of the axis of the rotor 5, the eccentricity is on the right side of the axis of the rotor 5, the inner hole of the balancing block 1 has 1mm eccentricity, and the balancing weight is in the opposite direction of the eccentricity, so the centrifugal force generated by the rotation of the bottom plate 6 component driven by the rotation of the rotor 5 is just opposite to the centrifugal force generated by the rotation of the center of gravity of the balancing block 1, and the center of gravity positions of the balancing block and the balancing block are.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a novel balanced structure grinder, characterized by, bottom plate including aluminium system material is made, the inside pressure equipment bearing of bottom plate, place the balancing piece in the bearing, the balancing piece passes through the fix with screw on grinder's rotor, the balancing piece with still be provided with the flat pad that rubber materials made between the rotor, the balancing piece adopts the powder metallurgy material to make, the counter weight of balancing piece is on the left of rotor axis, and eccentric is on rotor axis's the right.
2. The novel balanced structure sander as set forth in claim 1, wherein the counterweight is shaped as an inverted "L" shape as a whole, with the portion of the cuboid adjacent to the right side extending upward.
3. The novel balanced structure sander as claimed in claim 2, further comprising a dust suction fan blade mounted on the rotor above the counterbalance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922438189.3U CN211940308U (en) | 2019-12-30 | 2019-12-30 | Novel balanced structure grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922438189.3U CN211940308U (en) | 2019-12-30 | 2019-12-30 | Novel balanced structure grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211940308U true CN211940308U (en) | 2020-11-17 |
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ID=73188285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922438189.3U Active CN211940308U (en) | 2019-12-30 | 2019-12-30 | Novel balanced structure grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211940308U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022105741A1 (en) * | 2020-11-19 | 2022-05-27 | 南京泉峰科技有限公司 | Sanding machine |
-
2019
- 2019-12-30 CN CN201922438189.3U patent/CN211940308U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022105741A1 (en) * | 2020-11-19 | 2022-05-27 | 南京泉峰科技有限公司 | Sanding machine |
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