CN216179587U - Grinding wheel pressing device of angle grinder - Google Patents

Abstract

The utility model belongs to the technical field of angle grinder and specifically relates to a emery wheel closing device of angle grinder is related to, it includes main shaft, fixed connection in the stopper of main shaft, sliding sleeve are located epaxial emery wheel, set up in the subassembly that compresses tightly of main shaft, compress tightly the subassembly and include threaded connection in the clamp ring of main shaft, be used for injecing the locking mechanism of relative rotational position between clamp ring and the main shaft. This application has the effect of being convenient for demolish emery wheel and closing device.

Description

Grinding wheel pressing device of angle grinder

Technical Field

The application relates to the field of angle grinders, in particular to a grinding wheel pressing device of an angle grinder.

Background

Angle grinders (grinders), also known as grinders or disc grinders, are abrasive tools used for cutting and grinding glass fiber reinforced plastics. An angle grinder is a portable electric tool for cutting and polishing glass fiber reinforced plastics, and is mainly used for cutting, grinding and brushing metal and stone materials. According to different use functions, the angle grinder can be respectively provided with a cutting piece or a polishing piece.

The grinding wheel of the existing angle grinder and the rotating shaft of the angle grinder are locked through a pressing device, the polishing principle of the angle grinder is realized by the friction between the grinding wheel and a workpiece, in order to prevent the grinding wheel of the angle grinder from falling off in use, the rotation direction of the grinding wheel of the angle grinder is opposite to the screwing direction of the pressing device, the direction of the friction force applied to the grinding wheel of the angle grinder is consistent with the screwing direction of the pressing device, and the grinding wheel and the angle grinder are screwed more tightly when the angle grinder rotates.

And the dismantlement of traditional emery wheel closing device relies on two on the closing device to supply the spanner male hole to realize, be equipped with the cylinder that equals with the hole pitch in two holes on the closing device on the corresponding spanner, through controlling the spanner, make the cylinder on the spanner drive closing device and rotate, the cylinder of this kind of spanner generally welds on the spanner, because its joint strength is relatively poor and cylinder diameter itself is less, and the emery wheel uses very closely of being connected with the angle grinder for a long time, make the cylinder rupture or warp very easily when dismantling the emery wheel like this, lead to the emery wheel can't dismantle, only spend a large amount of time and experience to break up the emery wheel in order to dismantle the emery wheel at last and just can dismantle closing device.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the removal of the grinding wheel and the pressing device, the application provides the grinding wheel pressing device of the angle grinder.

The application provides a emery wheel closing device of angle grinder adopts following technical scheme:

the grinding wheel pressing device of the angle grinder comprises a main shaft, a limiting block fixedly connected to the main shaft, a grinding wheel sleeved on the main shaft in a sliding mode, and a pressing assembly arranged on the main shaft, wherein the pressing assembly comprises a pressing ring in threaded connection with the main shaft and a locking mechanism used for limiting the relative rotation position between the pressing ring and the main shaft.

Preferably, the locking mechanism includes a threaded hole which is formed in the end surface of the clamp ring far away from the grinding wheel and extends along the axial direction of the spindle, a driving screw which is connected in the threaded hole in a threaded manner, a driving block which is fixedly connected to one end of the driving screw far away from the clamp ring, and a holding plate which is fixedly connected to the end surface of the clamp ring far away from the grinding wheel, wherein the driving block is abutted to the surface of the holding plate far away from the spindle, and the surface of the holding plate far away from the spindle is gradually far away from the spindle along the direction towards the clamp ring.

Preferably, the driving block is in a shape of a circular truncated cone and is coaxially arranged with the driving screw, and the diameter of the driving block is gradually reduced towards the direction close to the compression ring.

Preferably, a rubber layer is arranged on the surface, close to the main shaft, of the holding plate.

Preferably, the surface of the driving block, which is far away from the driving screw rod, is provided with a hexagonal groove.

Preferably, the locking mechanisms are uniformly arranged in a plurality of groups around the main shaft.

Preferably, a plurality of bumps are uniformly arranged on the end face, close to the grinding wheel, of the compression ring.

Preferably, friction lines are arranged on the outer wall of the compression ring.

In summary, the present application includes at least one of the following beneficial technical effects:

1. under the cooperation of the limiting block, the grinding wheel and the pressing assembly, when the grinding wheel is installed, after the grinding wheel is sleeved on the main shaft, the pressing ring is rotated to be matched with the limiting block to clamp the grinding wheel, and the driving screw is rotated to enable the driving block at the end part of the driving screw to gradually press the holding plate on the surface of the main shaft in the process of moving along the axial direction of the main shaft, so that the pressing ring and the main shaft are locked, the situation that the pressing ring is locked due to overlarge pretightening force is not easy to generate in the rotating process of the main shaft, and workers can conveniently detach and replace the pressing ring and the grinding wheel;

2. the driving block is arranged to be in a circular truncated cone shape, so that a bus of the driving block can be attached to the surface of the holding plate, and the holding plate is stressed more uniformly;

3. the end face of the driving block is provided with the hexagonal groove, so that a worker can conveniently rotate the driving screw rod;

4. through set up a plurality of lugs at the clamp ring terminal surface to the messenger is bigger to the pretightning force of emery wheel, makes the emery wheel more stable in the use, and difficult emergence is rocked.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a sectional view of the present embodiment.

Description of reference numerals: 1. a main shaft; 2. a limiting block; 3. a grinding wheel; 4. a compression assembly; 5. a compression ring; 6. a locking mechanism; 7. a bump; 8. a threaded hole; 9. a drive screw; 10. a drive block; 11. holding the plate; 12. a rubber layer; 13. a hexagonal groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses grinding wheel pressing device of an angle grinder. Referring to fig. 1 and 2, an angle grinder's emery wheel closing device includes main shaft 1, fixed connection is in main shaft 1's stopper 2, the emery wheel 3 on main shaft 1 is located to the slip cap, set up in main shaft 1's compressing tightly subassembly 4, compressing tightly subassembly 4 includes threaded connection in main shaft 1's clamp ring 5, a locking mechanism 6 for injecing relative rotational position between clamp ring 5 and the main shaft 1, wherein, clamp ring 5 outer wall is equipped with friction line, and clamp ring 5 is close to the terminal surface of emery wheel 3 and evenly is equipped with a plurality of lugs 7, so that the pretightning force to emery wheel 3 is bigger, make emery wheel 3 more stable in the use, difficult emergence is rocked.

Locking mechanism 6 evenly is provided with a plurality of groups around main shaft 1, and locking mechanism 6 is including seting up in clamp ring 5 and keeping away from the terminal surface of emery wheel 3 and along 1 axial extension's of main shaft threaded hole 8, threaded connection in threaded hole 8 drive screw 9, fixed connection in drive screw 9 keep away from the drive block 10 of clamp ring 5 one end, fixed connection in clamp ring 5 the board 11 of embracing of the terminal surface of keeping away from emery wheel 3.

Drive block 10 is the round platform shape and is coaxial setting with drive screw 9, and drive block 10 orientation reduces gradually near the direction diameter of clamp ring 5, and embrace that main shaft 1 is kept away from along the orientation of orientation clamp ring 5 gradually to the surface that main shaft 1 was kept away from to board 11, make drive block 10 generating line laminate embrace the surface that main shaft 1 was kept away from to board 11, it is equipped with rubber layer 12 to embrace the surface that board 11 is close to main shaft 1, drive block 10 keeps away from the surface of drive screw 9 and has seted up hexagon groove 13, so that the staff rotates drive screw 9.

The implementation principle of the grinding wheel pressing device of the angle grinder in the embodiment of the application is as follows:

when installing emery wheel 3, locate the main shaft 1 with emery wheel 3 cover back, through rotating clamp ring 5, make clamp ring 5 cooperate stopper 2 to press from both sides tight emery wheel 3, through rotating drive screw 9, make the drive block 10 of drive screw 9 tip along the in-process of 1 axial displacement of main shaft, compress tightly embracing board 11 on main shaft 1 surface gradually, thereby lock between clamp ring 5 and the main shaft 1, make main shaft 1 at the pivoted in-process, be difficult for making clamp ring 5 because the pretightning force is too big and produce the condition of locking, be convenient for the staff to dismantle and change clamp ring 5 and emery wheel 3.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a emery wheel closing device of angle grinder which characterized in that: the grinding wheel clamping device comprises a main shaft (1), a limiting block (2) fixedly connected to the main shaft (1), a grinding wheel (3) slidably sleeved on the main shaft (1), and a pressing assembly (4) arranged on the main shaft (1), wherein the pressing assembly (4) comprises a pressing ring (5) in threaded connection with the main shaft (1) and a locking mechanism (6) used for limiting the relative rotation position between the pressing ring (5) and the main shaft (1).

2. The apparatus of claim 1, wherein the wheel press assembly comprises: locking mechanism (6) including set up in clamp ring (5) keep away from the terminal surface of emery wheel (3) and along main shaft (1) axial extension's screw hole (8), threaded connection in drive screw (9) in screw hole (8), fixed connection in drive screw (9) are kept away from clamp ring (5) one end drive block (10), fixed connection in clamp ring (5) are kept away from embrace board (11) of the terminal surface of emery wheel (3), drive block (10) butt in embrace board (11) and keep away from the surface of main shaft (1), just embrace board (11) and keep away from the surface of main shaft (1) is along keeping away from gradually towards clamp ring (5) the direction main shaft (1).

3. The apparatus of claim 2, wherein the wheel press assembly comprises: the driving block (10) is in a circular truncated cone shape and is coaxially arranged with the driving screw rod (9), and the diameter of the driving block (10) is gradually reduced towards the direction close to the compression ring (5).

4. The apparatus of claim 2, wherein the wheel press assembly comprises: the surface of the holding plate (11) close to the main shaft (1) is provided with a rubber layer (12).

5. The apparatus of claim 2, wherein the wheel press assembly comprises: the surface of the driving block (10) far away from the driving screw rod (9) is provided with a hexagonal groove (13).

6. The apparatus of claim 2, wherein the wheel press assembly comprises: the locking mechanism (6) is uniformly provided with a plurality of groups around the main shaft (1).

7. The apparatus of claim 1, wherein the wheel press assembly comprises: the end face, close to the grinding wheel (3), of the compression ring (5) is evenly provided with a plurality of bumps (7).

8. The apparatus of claim 1, wherein the wheel press assembly comprises: the outer wall of the compression ring (5) is provided with friction grains.

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