CN114833696A - Angle mill capable of switching positive and negative rotation - Google Patents
Angle mill capable of switching positive and negative rotation Download PDFInfo
- Publication number
- CN114833696A CN114833696A CN202210412389.5A CN202210412389A CN114833696A CN 114833696 A CN114833696 A CN 114833696A CN 202210412389 A CN202210412389 A CN 202210412389A CN 114833696 A CN114833696 A CN 114833696A
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- China
- Prior art keywords
- output transmission
- hole
- pressing plate
- locking
- rotation
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/028—Angle tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/005—Auxiliary devices used in connection with portable grinding machines, e.g. holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a positive and negative rotation switchable angle grinder, which comprises a head unit consisting of a head shell and a head shell cover, and further comprises: the main body part of the output transmission part is rotatably arranged in the head unit, and the lower end part of the output transmission part extends out of the head unit and is driven by the driving mechanism to rotate; the pressing plate is arranged below the output transmission part; and the locking component is arranged in the axial through hole of the output transmission part, the lower end of the locking component is connected with the pressing plate, and an acting force for pressing the pressing plate to the output transmission part is provided. The invention realizes that the person who is right handed or wrong handed can use the device normally. Meanwhile, when the grinding wheel is abraded in a single direction for a period of time due to forward rotation, normal use of the grinding wheel in the direction which is not abraded can be achieved by performing reverse rotation, the utilization rate of the grinding wheel is effectively improved, material resources are saved, and the use cost is greatly reduced.
Description
Technical Field
The invention relates to the field of angle mills, in particular to an angle mill capable of switching forward and reverse rotation.
Background
In the existing angle grinder, grinding wheels are always configured to rotate in one direction when working, which is caused by the defects of the existing structure: in the existing structure, an upper pressing plate assembly and a lower pressing plate assembly are generally adopted to be in threaded fit with an output shaft, so that the grinding wheel is compressed, the structure limits the grinding wheel to rotate in a single direction, and if the grinding wheel rotates reversely, the pressing plate assemblies are loosened, so that great potential safety hazards exist.
The angle grinder which can only rotate in one direction cannot be applied to people with both hands and the right and left hands, and meanwhile, the utilization rate of the grinding wheel cannot be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a positive and negative rotation switchable angle grinder which can effectively solve the problems of the traditional angle grinder structure.
The technical scheme adopted by the invention for solving the technical problems is as follows: a positive and negative rotation switchable angle grinder comprises a head unit composed of a head shell and a head shell cover, and further comprises: the main body part of the output transmission part is rotatably arranged in the head unit, and the lower end part of the output transmission part extends out of the head unit and is driven by the driving mechanism to rotate; the pressing plate is arranged below the output transmission part; and the locking component is arranged in the axial through hole of the output transmission part, the lower end of the locking component is connected with the pressing plate, and an acting force for pressing the pressing plate to the output transmission part is provided.
In the above technical solution, further, a first locking matching portion is disposed at an upper end of the output transmission member, a slider is movably disposed on the head shell, and a second locking matching portion matched with the first locking matching portion is disposed on the slider to limit rotation of the output transmission member.
In the above technical solution, further, the upper portion of the axial through hole of the output rotating member is a counter bore; the locking part is a single-end stud, the lower end of the locking part is in threaded connection with the pressing plate, and the upper end of the locking part is arranged in the countersunk hole.
Among the above-mentioned technical scheme, furtherly, still be provided with on the slider and move back the hole, work as the slider slide to with when the output turned the piece locking, move back the hole will with the axial direction through-hole coincidence for be used for the operation locking part's instrument can stretch into extremely in the axial direction through-hole.
In the above technical solution, further, the first locking engagement portion is a groove provided at an upper port of the output rotation member, and the second locking engagement portion is a projection provided at a lower portion of the slider.
In the above technical scheme, further, a detachable fixing plate is arranged on the head shell, the fixing plate is provided with a sliding limiting groove to limit the moving range of the sliding block, and the sliding block is driven by a push button arranged outside the head shell.
In the above technical solution, further, the output rotating member includes a pressing portion, a rotation matching portion, and a gear portion; the pressing part extends out of the lower part of the head shell cover to form pressing with the pressing plate; the rotation matching part is rotatably arranged in the head shell cover; the gear part is a first bevel gear which is circumferentially arranged and is arranged in the head shell.
In the above technical solution, further, the driving mechanism includes a motor and a transmission shaft, and at least a part of the transmission shaft extends into the head shell and is driven by the motor to rotate; and a second bevel gear meshed with the first bevel gear is arranged at the end part of the transmission shaft.
In the above technical solution, further, the upper end of the output transmission member is rotationally matched with the head housing through a shaft sleeve.
Among the above-mentioned technical scheme, furtherly the below of output transmission spare be provided with the communicating mating holes of axial direction through-hole, the mating holes is hourglass hopper-shaped, the upper portion of clamp plate is the convex part, during locking, the convex part with the mating holes closely cooperates.
The invention has the beneficial effects that:
different from the existing structure, in the invention, the traditional output shaft structure is replaced by the output transmission part with the pressing part, and the screw is arranged in the output transmission part to be connected with the locking pressing plate, so that the output transmission part, the pressed grinding wheel and the pressing plate synchronously rotate when in use, and further, no matter the motor rotates forwards or backwards, the screw can always provide locking force without loosening, and the reliability of forward and backward rotation implementation is ensured.
Furthermore, the sliding block controlled by the push button plays a role in locking the output transmission part and limiting the transmission part to be incapable of rotating when the grinding wheel is installed, and also plays a role in providing a yielding installation hole, thereby being beneficial to the locking and assembling of the grinding wheel.
Based on the arrangement, the invention realizes that the people with hands facing each other or with hands facing each other can use the device normally. Meanwhile, when the grinding wheel is abraded in a single direction for a period of time due to forward rotation, normal use of the grinding wheel in the direction which is not abraded can be achieved by performing reverse rotation, the utilization rate of the grinding wheel is effectively improved, material resources are saved, and the use cost is greatly reduced.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a schematic view of the internal structure of another aspect of the present invention.
Fig. 4 is an external structural view of the present invention.
In the figure, 1, a head shell, 2, a head shell cover, 3, a motor, 4, a transmission shaft, 41, a second bevel gear, 5, an output transmission member, 51, a pressing part, 52, a rotating matching part, 53, a gear part, 54, an axial through hole, 55, a first locking matching part, 56, a matching hole, 6, a pressing plate, 61, a boss, 7, a shaft sleeve, 8, a locking part, 9, a sliding block, 91, a second locking matching part, 92, a yielding hole, 10, a fixing plate and 11, a push button.
Detailed Description
Referring to fig. 1 to 4, a reversible angle grinder includes a body unit and a head unit, the head unit is composed of a head housing 1 and a head housing cover 2, and the two are fastened by bolts. A drive mechanism, in particular a rotor motor 3 and a transmission shaft 4, is arranged in the machine body unit, a part of the transmission shaft 4 extending into the head housing 1.
An output transmission member 5 is further arranged in the head unit, the upper half part of the output transmission member 5 is rotatably arranged in the head unit, and the lower end part of the output transmission member 5 extends out of the head unit. Specifically, the output rotating part comprises a pressing part 51, a rotation matching part 52 and a gear part 53, the main body of the pressing part 51 is a hollow shaft with a pressing plate 6, and the lower end of the pressing part extends out of the lower part of the head shell cover 2 to be pressed with the pressing plate 6; the upper end of the output transmission member 5 is in running fit with the head shell through a shaft sleeve 7; the rotating matching part 52 is rotatably arranged in the head housing cover 2, and the rotating matching part 52 can be a bearing fixed on the output rotating member or can be an integrally formed rotating matching part 52 on the output transmission member 5; the gear part 53 is a first bevel gear circumferentially arranged and arranged in the head shell, and the first bevel gear is meshed with the second bevel gear 41 at the end of the transmission shaft 4, so that the motor 3 drives the output transmission member 5 to rotate.
In order to realize the compression of the pressure plate 6 and the output transmission member 5, a locking component 8 is arranged in an axial through hole 54 of the output transmission member 5, the locking component 8 is preferably a single-head hexagon socket head stud, the upper part of the axial through hole 54 of the output transmission member is a countersunk hole, the lower end of the single-head stud is in threaded connection with the pressure plate 6, the upper end of the single-head stud is arranged in the countersunk hole, and the single-head hexagon stud is rotated to form threaded tight fit so as to provide an acting force for compressing the pressure plate 6 to the output transmission member 5, so that a grinding wheel arranged between the pressure plate 6 and the output transmission member 5 can be fixed.
In order to facilitate the locking operation of the locking component 8, a first locking matching portion 55 is arranged at the upper end of the output transmission member 5, a sliding block 9 is movably arranged on the head shell, and a second locking matching portion 91 matched with the first locking matching portion 55 is arranged on the sliding block 9 to limit the rotation of the output transmission member 5. Specifically, the first locking matching portion 55 is a groove disposed at the upper port of the output rotating member, and the second locking matching portion 91 is a convex pillar disposed at the lower portion of the slider 9. Simultaneously, still be provided with on the slider 9 and move back hole 92, work as slider 9 slide to with when the output turned the piece locking, move back hole 92 will with the axial through hole 54 coincidence for be used for the rotation locking part 8's instrument, like the spanner, can stretch into to in the axial through hole 54.
In order to facilitate the installation and the movement of the sliding block 9, a detachable fixing plate 10 is arranged on the head shell, the fixing plate 10 is provided with a sliding limiting groove to limit the moving range of the sliding block 9, and the sliding block 9 is driven by a push button 11 arranged outside the head shell.
In order to enable the grinding wheel to be fastened better, a matching hole 56 communicated with the axial through hole 54 is formed below the output transmission piece 5, the matching hole 56 is funnel-shaped, a convex part 61 is arranged on the upper part of the pressing plate 6, and the convex part 61 is tightly matched with the matching hole 56 during locking.
The use process of the invention is as follows: when the grinding wheel needs to be installed, the grinding wheel is placed at the lower end of the head shell cover 2, the pressing plate 6 is used for pre-pressing the grinding wheel at the lower part of the output transmission part 5, the push button 11 is pushed outwards to drive the sliding block 9 to move, the output transmission part 5 is slowly rotated in the displacement process until the convex column on the sliding block 9 is matched with the concave groove at the upper part of the output transmission part 5, at the moment, the output transmission part 5 cannot rotate, meanwhile, the receding hole 92 on the sliding block 9 is overlapped with the axle center through hole in the output transmission part 5, the single-end stud arranged in the output transmission part 5 is driven to rotate by an external wrench until the pressing plate 6 is completely fastened on the output transmission part 5, then the sliding block 9 is receded, the output transmission part 5 is relieved from limiting, the normal rotation can be realized, the motor 3 can be started to work, and in the process, the output transmission part 5, the compressed grinding wheel, The pressing plate 6 three will rotate in step when using, and then realized no matter the motor 3 is corotation or reversal, the screw rod can provide the locking force all the time, and can not loosen, guarantees the reliability of corotation and reversal implementation. When the reverse rotation is needed, only the motor 3 needs to be controlled to reversely rotate.
According to the design, the invention realizes that people with hands facing each other or people with hands facing each other can normally use the electric heating cooker. Meanwhile, when the grinding wheel is abraded in a single direction for a period of time due to forward rotation, normal use of the grinding wheel in the direction which is not abraded can be achieved by performing reverse rotation, the utilization rate of the grinding wheel is effectively improved, material resources are saved, and the use cost is greatly reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and simple modifications, equivalent changes and modifications may be made without departing from the technical scope of the present invention.
Claims (10)
1. The utility model provides a positive and negative changeable angle mill that changes, includes the head unit of constituteing by head shell and head shell lid, its characterized in that still includes:
the main body part of the output transmission part is rotatably arranged in the head unit, and the lower end part of the output transmission part extends out of the head unit and is driven by the driving mechanism to rotate;
the pressing plate is arranged below the output transmission part;
and the locking component is arranged in the axial through hole of the output transmission part, the lower end of the locking component is connected with the pressing plate, and an acting force for pressing the pressing plate to the output transmission part is provided.
2. The angle grinder with the switchable positive and negative rotation function according to claim 1, wherein the output transmission member is provided at an upper end thereof with a first locking engagement portion, the head housing is movably provided with a slide block, and the slide block is provided with a second locking engagement portion engaged with the first locking engagement portion to limit the rotation of the output transmission member.
3. The angle grinder capable of switching between forward rotation and reverse rotation according to claim 1, wherein the upper part of the axial through hole of the output rotating piece is a counter bore; the locking part is a single-end stud, the lower end of the locking part is in threaded connection with the pressing plate, and the upper end of the locking part is arranged in the countersunk hole.
4. The angle grinder with switchable forward and reverse rotation as claimed in claim 2, wherein the sliding block is further provided with a relief hole, and when the sliding block slides to be locked with the output rotating member, the relief hole coincides with the axial through hole, so that a tool for operating the locking member can extend into the axial through hole.
5. The angle grinder with switchable forward and reverse rotation as claimed in claim 2, wherein the first locking engagement portion is a groove provided at an upper port portion of the output rotation member, and the second locking engagement portion is a boss provided at a lower portion of the slider.
6. The angle grinder with switchable forward and reverse rotation as claimed in claim 4, wherein the head housing is provided with a detachable fixing plate, the fixing plate is provided with a sliding limiting groove to limit the moving range of the sliding block, and the sliding block is driven by a push button arranged outside the head housing.
7. The angle grinder capable of switching between forward rotation and reverse rotation according to claim 1, wherein the output rotating member comprises a pressing portion, a rotation matching portion and a gear portion; the pressing part extends out of the lower part of the head shell cover to form pressing with the pressing plate; the rotation matching part is rotatably arranged in the head shell cover; the gear part is a first bevel gear which is circumferentially arranged and is arranged in the head shell.
8. The angle grinder as claimed in claim 7, wherein the driving mechanism comprises a motor and a transmission shaft, the transmission shaft at least partially extends into the head shell and is driven by the motor to rotate; and a second bevel gear meshed with the first bevel gear is arranged at the end part of the transmission shaft.
9. The angle grinder as claimed in claim 7, wherein the upper end of the output transmission member is rotatably engaged with the head housing through a bushing.
10. The angle grinder with the switchable positive and negative rotation function according to claim 1, wherein a matching hole communicated with the axial through hole is formed below the output transmission member, the matching hole is funnel-shaped, the upper portion of the pressing plate is a convex portion, and the convex portion is tightly matched with the matching hole when the pressing plate is locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210412389.5A CN114833696A (en) | 2022-04-19 | 2022-04-19 | Angle mill capable of switching positive and negative rotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210412389.5A CN114833696A (en) | 2022-04-19 | 2022-04-19 | Angle mill capable of switching positive and negative rotation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114833696A true CN114833696A (en) | 2022-08-02 |
Family
ID=82565330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210412389.5A Pending CN114833696A (en) | 2022-04-19 | 2022-04-19 | Angle mill capable of switching positive and negative rotation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114833696A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202162675U (en) * | 2011-06-27 | 2012-03-14 | 宁波国图电机有限公司 | Angle grinder |
| CN205888819U (en) * | 2016-08-22 | 2017-01-18 | 浙江隆达不锈钢有限公司 | Novel angle grinder |
-
2022
- 2022-04-19 CN CN202210412389.5A patent/CN114833696A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202162675U (en) * | 2011-06-27 | 2012-03-14 | 宁波国图电机有限公司 | Angle grinder |
| CN205888819U (en) * | 2016-08-22 | 2017-01-18 | 浙江隆达不锈钢有限公司 | Novel angle grinder |
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