CN220863592U - Hand-held grinding bit tool - Google Patents
Hand-held grinding bit tool Download PDFInfo
- Publication number
- CN220863592U CN220863592U CN202322781259.1U CN202322781259U CN220863592U CN 220863592 U CN220863592 U CN 220863592U CN 202322781259 U CN202322781259 U CN 202322781259U CN 220863592 U CN220863592 U CN 220863592U
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- rotating shaft
- positioning
- hand
- plane
- tool
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- 238000005553 drilling Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model provides a hand-held grinding bit tool, which belongs to the technical field of machining, and comprises: the rotating shaft is detachably connected with the electric tool, and a positioning part is arranged on the rotating shaft; the grinding wheel is nested on the rotating shaft and synchronously rotates with the rotating shaft through the positioning part; the shell is in nested fit with the rotating shaft, the grinding wheel is contained in the shell, a notch is formed in the shell, and part of the grinding wheel is exposed through the notch and used as a grinding position of the drill bit; the bracket is connected to the shell, and an operation plane used for placing the drill bit is arranged on the bracket, wherein the position of the operation plane corresponds to the position of the notch, the angle of an included angle alpha 1 between the operation plane and the axial direction of the rotating shaft is 0.001-10 degrees, and the angle of an included angle alpha 2 between the operation plane and the radial direction of the rotating shaft is 90.001-100 degrees. The utility model can be matched with the output end of any electric tool through the rotating shaft, thereby achieving the effect of grinding the drill bit, and being convenient and reliable to operate.
Description
Technical Field
The utility model belongs to the technical field of machining, and relates to a hand-held grinding bit tool.
Background
In the prior art, when the drill bit is blunt, the grinding edge needs to be manually ground or the drill bit needs to be ground on a grinding machine, and if the manual grinding is adopted, the time and the labor are wasted. If the grinding machine is adopted for grinding, the grinding machine is inconvenient, and particularly, when workers go out, the drill bit cannot be timely ground, so that the quality and the working efficiency of product processing are affected.
Disclosure of utility model
The utility model aims to solve the problems in the prior art, and provides a hand-held grinding bit tool which is convenient for the drill bit to realize even grinding during outgoing operation.
The aim of the utility model can be achieved by the following technical scheme: a hand held grinding bit tool comprising:
The rotating shaft is detachably connected with the electric tool, and a positioning part is arranged on the rotating shaft;
the grinding wheel is nested on the rotating shaft and synchronously rotates with the rotating shaft through the positioning part;
The shell is in nested fit with the rotating shaft, the grinding wheel is contained in the shell, a notch is formed in the shell, and part of the grinding wheel is exposed through the notch and used as a grinding position of the drill bit;
The bracket is connected to the shell, and an operation plane used for placing the drill bit is arranged on the bracket, wherein the position of the operation plane corresponds to the position of the notch, the angle of an included angle alpha 1 between the operation plane and the axial direction of the rotating shaft is 0.001-10 degrees, and the angle of an included angle alpha 2 between the operation plane and the radial direction of the rotating shaft is 90.001-100 degrees.
In the hand-held grinding bit tool, the shell comprises an upper cover and a lower shell which can be spliced, the rotating shaft is clamped between the upper cover and the lower shell through the upper cover and the lower shell, and the upper cover and the lower shell are locked through a fastener to be connected, wherein the notch is formed in the upper cover, and the bracket is connected to the lower shell.
In the hand-held grinding bit tool, a positioning groove is concavely formed along the operation plane, the opening direction of the positioning groove faces the notch, and the positioning groove and the notch are communicated, wherein the positioning groove comprises a first positioning plane and a second positioning plane, and an included angle alpha 3 between the first positioning plane and the second positioning plane is between 70 degrees and 120 degrees.
In the above hand-held grinding bit tool, the first positioning plane and the second positioning plane are respectively connected to two sides of the notch, and an angle α4 between an intersection line of the first positioning plane and the second positioning plane and an axial direction of the spindle is 118 ° or 135 °.
In the hand-held grinding bit tool described above, the positioning groove is V-shaped.
In the above-mentioned hand-held grinding bit tool, the location portion includes two positioning nut of spiro union in pivot, change the relative distance between two positioning nut through pivot epaxial external screw thread, and positioning nut is the echelonment structure setting, wherein, positioning nut includes first ladder portion and second ladder portion, the diameter of axle of first ladder portion is greater than the diameter of axle of second ladder portion, and first ladder portion on two positioning nut keeps away from each other, second ladder portion on two positioning nut is close to each other, the emery wheel nestification is in the second ladder portion with two positioning nut, and the centre gripping is between the first ladder portion of two positioning nut.
In the above hand-held grinding bit tool, the outer contour of the second stepped portion is arranged in a polygonal shape.
In the above hand-held grinding bit tool, bearings are respectively nested at two ends of the rotating shaft, and are respectively a first bearing and a second bearing, and the positioning portion is located between the first bearing and the second bearing, wherein the first bearing is close to one end of the rotating shaft, which is detachably connected with the electric tool, the second bearing is close to one end of the housing, where the bracket is located, and the shaft diameter of the first bearing is larger than that of the second bearing.
In the above hand-held grinding bit tool, the two ends of the housing along the axial direction of the housing extend to form the first boss and the second boss, and the first boss and the second boss are respectively corresponding to the first bearing and the second bearing in a nested fit.
In the above hand-held grinding bit tool, at least one third positioning plane is disposed at one end of the shaft, which is detachably connected to the electric tool, and the third positioning plane extends along the axial direction of the shaft.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The hand-held grinding drill bit tool provided by the utility model can be matched with the output end of any electric tool through the rotating shaft, and the rotating shaft is rotated through the electric tool, so that the grinding wheel is driven to rotate, and the effect of grinding the drill bit is achieved, and the hand-held grinding drill bit tool is convenient and reliable to operate.
(2) The positioning groove is arranged to be a V-shaped groove, so that the drill bit can be used as a positioning part of the drill bit when grinding is performed, and the drill bit can only move along the length direction of the bracket, so that the drill bit is prevented from shaking left and right.
Drawings
Fig. 1 is a schematic view of a hand-held abrasive bit tool according to the present utility model.
Fig. 2 is a schematic view of a hand-held abrasive bit tool according to another aspect of the present utility model.
Fig. 3 is a cross-sectional view of A-A shown in fig. 2.
Fig. 4 is a schematic view of a third perspective of a hand-held abrasive bit tool according to the present utility model.
Fig. 5 is a schematic view of a hand-held abrasive bit tool according to a fourth aspect of the present utility model.
In the figure, 10, a rotating shaft; 11. a third positioning plane; 20. positioning a nut; 21. a first step portion; 22. a second step portion; 30. grinding wheel; 40. a housing; 41. a notch; 42. a first boss; 43. a second boss; 44. a first bearing; 45. a second bearing; 46. an upper cover; 47. a lower case; 50. a bracket; 51. an operation plane; 52. a positioning groove; 521. a first positioning plane; 522. and a second positioning plane.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1 to 5, the present utility model provides a hand-held grinding bit tool, comprising:
One end of the rotating shaft 10 is detachably connected with the electric tool, the other end of the rotating shaft is provided with external threads, a positioning part is screwed on the external threads, the positioning part comprises two positioning nuts 20, and the relative distance between the two positioning nuts 20 is changed through the external threads on the rotating shaft 10;
The grinding wheel 30 is nested on the rotating shaft 10 and clamped between the two positioning nuts 20, so that the grinding wheel 30 and the rotating shaft 10 can synchronously rotate;
The shell 40 is in nested fit with the rotating shaft 10, the grinding wheel 30 is accommodated in the shell 40, a notch 41 is formed in the shell 40, and part of the grinding wheel 30 is exposed through the notch 41 and used as a grinding position of a drill bit;
The bracket 50 is connected to the casing 40, and an operation plane 51 for placing a drill bit is disposed on the bracket 50, wherein the position of the operation plane 51 corresponds to the position of the notch 41, the angle of the angle α1 between the operation plane 51 and the axial direction of the rotating shaft 10 is between 0.001-10 °, and the angle of the angle α2 between the operation plane 51 and the radial direction of the rotating shaft 10 is between 90.001-100 °.
The hand-held grinding bit tool provided by the utility model can be matched with the output end of any electric tool through the rotating shaft 10, and the rotating shaft 10 is rotated through the electric tool, so that the grinding wheel 30 is driven to rotate, and the bit grinding effect is achieved, and the operation is convenient and reliable.
Further, the first boss 42 and the second boss 43 are formed on the housing 40 by extending both ends in the axial direction thereof, and the first bearing 44 and the second bearing 45 are respectively embedded in the first boss 42 and the second boss 43, and the first bearing 44 and the second bearing 45 are respectively in a nested fit with the rotating shaft 10, wherein the rotation of the rotating shaft 10 is smoother by the first bearing 44 and the second bearing 45.
Further, the housing 40 includes a splice-able upper cover 46 and a lower case 47, the rotary shaft 10 is clamped therebetween by the upper cover 46 and the lower case 47, and the connection between the upper cover 46 and the lower case 47 is locked by fasteners distributed on the first boss 42 and the second boss 43.
Preferably, the notch 41 is disposed on the upper cover 46, the bracket 50 is connected to the lower shell 47, and the operation plane 51 is concave downward to form a positioning groove 52, wherein the opening direction of the positioning groove 52 faces the notch 41, and the positioning groove 52 includes a first positioning plane 521 and a second positioning plane 522, and an angle α3 between the first positioning plane 521 and the second positioning plane 522 is between 70 ° and 120 °.
It should be noted that the positioning groove 52 is preferably a V-shaped groove.
In this embodiment, the positioning groove 52 is configured as a V-shaped groove, so that the drill bit is used as a positioning part of the drill bit when grinding, and the drill bit can only move along the length direction of the bracket 50, so that the drill bit is prevented from shaking left and right.
Further preferably, the first positioning plane 521 and the second positioning plane 522 are respectively connected to two sides of the notch 41, and an angle α4 between an intersection line of the first positioning plane 521 and the second positioning plane 522 and an axial direction of the rotating shaft 10 is 118 ° or 135 °.
Preferably, the positioning nuts 20 are arranged in a stepped structure, the positioning nuts 20 comprise a first step part 21 and a second step part 22, the shaft diameter of the first step part 21 is larger than that of the second step part 22, the first step parts 21 on the two positioning nuts 20 are far away from each other, the second step parts 22 on the two positioning nuts 20 are close to each other, and when the grinding wheel 30 is nested on the rotating shaft 10, the grinding wheel 30 is in nested fit with the second step parts 22 on the two positioning nuts 20 and clamped between the first step parts 21 on the two positioning nuts 20.
Further preferably, the outer contour of the first step portion 21 is circular, the outer contour of the second step portion 22 is polygonal, and when the grinding wheel 30 is nested on the second step portion 22, the second step portion 22 is polygonal, so that no relative rotation occurs between the positioning nut 20 and the grinding wheel 30, and when the rotating shaft 10 rotates under the action of the electric tool, the grinding wheel 30 can be driven to rotate synchronously.
Preferably, the two positioning nuts 20 are located between the first bearing 44 and the second bearing 45, and the first bearing 44 is close to an end of the rotating shaft 10, which is matched with the electric tool, the second rotating shaft 10 is close to an end of the rotating shaft 10, which is provided with external threads, wherein the shaft diameter of the first bearing 44 is larger than that of the second bearing 45, and the bracket 50 is connected to an end of the housing 40, which is close to the second bearing 45.
Preferably, at least one third positioning plane 11 is disposed at one end of the rotating shaft 10, which is matched with the electric tool, and through the third positioning plane 11, when the electric tool drives the rotating shaft 10 to rotate, no relative rotation occurs between the rotating shaft 10 and the output end of the electric tool, so that the reliability of grinding the drill bit is improved.
It should be noted that the description of the present utility model as it relates to "first", "second", "a", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The terms "coupled," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally formed, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. A hand-held abrasive drill tool, comprising:
The rotating shaft is detachably connected with the electric tool, and a positioning part is arranged on the rotating shaft;
the grinding wheel is nested on the rotating shaft and synchronously rotates with the rotating shaft through the positioning part;
The shell is in nested fit with the rotating shaft, the grinding wheel is contained in the shell, a notch is formed in the shell, and part of the grinding wheel is exposed through the notch and used as a grinding position of the drill bit;
The bracket is connected to the shell, and an operation plane used for placing the drill bit is arranged on the bracket, wherein the position of the operation plane corresponds to the position of the notch, the angle of an included angle alpha 1 between the operation plane and the axial direction of the rotating shaft is 0.001-10 degrees, and the angle of an included angle alpha 2 between the operation plane and the radial direction of the rotating shaft is 90.001-100 degrees.
2. The hand-held abrasive drill tool of claim 1, wherein the housing comprises an upper cover and a lower housing that are adapted to be assembled together, the spindle is held between the upper cover and the lower housing by the upper cover and the lower housing, and the connection between the upper cover and the lower housing is locked by the fastener, wherein the notch is provided in the upper cover and the bracket is connected to the lower housing.
3. The hand-held grinding bit tool of claim 1, wherein the locating slot is formed in a concave shape along the operation plane, and the opening direction of the locating slot faces the notch, and the locating slot is communicated with the notch, wherein the locating slot comprises a first locating plane and a second locating plane, and an included angle alpha 3 between the first locating plane and the second locating plane is between 70 degrees and 120 degrees.
4. A hand-held grinding bit tool according to claim 3, wherein the first positioning plane and the second positioning plane are respectively connected to two sides of the notch, and an angle α4 between an intersection line of the first positioning plane and the second positioning plane and an axial direction of the spindle is 118 ° or 135 °.
5. A hand held abrasive drill tool according to claim 3, wherein the locating slot is V-shaped.
6. The hand-held grinding bit tool of claim 1, wherein the positioning portion comprises two positioning nuts screwed on the rotating shaft, the relative distance between the two positioning nuts is changed by external threads on the rotating shaft, the positioning nuts are arranged in a stepped structure, wherein the positioning nuts comprise a first stepped portion and a second stepped portion, the shaft diameter of the first stepped portion is larger than that of the second stepped portion, the first stepped portions on the two positioning nuts are far away from each other, the second stepped portions on the two positioning nuts are close to each other, and the grinding wheel is nested on the second stepped portions of the two positioning nuts and clamped between the first stepped portions of the two positioning nuts.
7. The hand held abrasive drill tool of claim 6, wherein the outer profile of the second step is polygonal.
8. The hand-held grinding bit tool of claim 1, wherein bearings are respectively nested at two ends of the rotating shaft, the bearings are respectively a first bearing and a second bearing, and the positioning portion is located between the first bearing and the second bearing, wherein the first bearing is close to one end of the rotating shaft, which is detachably connected with the electric tool, the second bearing is close to one end of the housing, which is provided with a bracket, and the shaft diameter of the first bearing is larger than that of the second bearing.
9. The hand-held abrasive drill tool of claim 8, wherein the housing has first and second bosses extending from opposite ends of the housing in the axial direction of the housing, and wherein the first and second bosses are respectively nested with the first and second bearings.
10. The hand-held abrasive drilling tool of claim 1, wherein at least one third positioning surface is provided on the end of the spindle that is detachably connected to the power tool, and the third positioning surface extends in the axial direction of the spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322781259.1U CN220863592U (en) | 2023-10-16 | 2023-10-16 | Hand-held grinding bit tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322781259.1U CN220863592U (en) | 2023-10-16 | 2023-10-16 | Hand-held grinding bit tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220863592U true CN220863592U (en) | 2024-04-30 |
Family
ID=90817013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322781259.1U Active CN220863592U (en) | 2023-10-16 | 2023-10-16 | Hand-held grinding bit tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220863592U (en) |
-
2023
- 2023-10-16 CN CN202322781259.1U patent/CN220863592U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |