A quick mounting structure of a grinding wheel

Abstract

The application discloses a kind of quick mounting structure of grinding wheel, including flange, flange connecting shaft, centrifugal block and power spindle, grinding wheel is fixed on flange, flange is fixed on one end of flange connecting shaft, the other end of flange connecting shaft has "V" type groove, centrifugal block is provided with the clamping inclined surface matched with "V" type groove, clamping inclined surface is clamped in "V" type groove by adjusting device, centrifugal block is fixed on power spindle.Grinding wheel is fixed on flange, then flange is fixed on one end of flange connecting shaft, so it constitutes nature prefabricated kit;The other end of flange connecting shaft is connected and fixed by "V" type groove and the clamping inclined surface on centrifugal block using clamping mode, only need to clamp the flange connecting shaft of prefabricated kit to centrifugal block to complete fixing, and the fixing mode is quick and flexible.There is a large space between grinding wheel and power spindle, so it can greatly reduce the dust adhered on power spindle when polishing, and reduce the failure rate of power spindle.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of grinding tools, and particularly relates to a quick mounting structure of a grinding wheel. BACKGROUND

[0002] The grinding wheel, also known as a fixed abrasive tool, is mainly used for grinding structural parts in industrial production. The grinding wheel can be divided into many different types according to different materials and manufacturing processes, and different types of grinding wheels need to be matched according to different grinding requirements. In addition, the grinding wheel will gradually wear out during grinding, that is, it is necessary to replace the grinding wheel during use. In the processing environment with strong continuity, the frequency of replacing the grinding wheel is high, which causes time-consuming and laborious replacement of the grinding wheel, and installation and fixation occupy a large amount of working time.

[0003] The traditional grinding wheel is directly installed on the power spindle by bolts. A large amount of dust will be generated during high-speed rotation and grinding of the grinding wheel. The dust adheres to the power spindle and is difficult to clean. When the dust enters the motor, it will also cause a fault. SUMMARY

[0004] In order to solve the technical problems of time-consuming and laborious replacement of the grinding wheel and large amount of dust during grinding in the background art, the main purpose of the present application is to provide a quick mounting structure of a grinding wheel, which can solve the above problems.

[0005] In order to achieve the above purpose, the technical scheme of the present application is as follows: a quick mounting structure of a grinding wheel, comprising a flange, a flange connecting shaft, a centrifugal block and a power spindle, the grinding wheel is fixed on the flange, the flange is fixed on one end of the flange connecting shaft, the other end of the flange connecting shaft has a V-shaped groove, the centrifugal block is provided with a clamping inclined surface matched with the V-shaped groove, the clamping inclined surface is clamped in the V-shaped groove through an adjusting device, and the centrifugal block is fixed on the power spindle.

[0006] Firstly, the grinding wheel is fixed on the flange, which can be fixed by the first bolt, or other fixing methods such as buckles, and then the flange is fixed on one end of the flange connecting shaft through the second bolt and the gasket, so as to form a prefabricated kit, which can be prepared in advance, or several prefabricated kits can be prepared; the other end of the flange connecting shaft is connected and fixed through the "V" groove and the clamping slope on the centrifugal block in a clamping manner, that is, when the grinding wheel needs to be replaced, only the flange connecting shaft of the prefabricated kit needs to be clamped on the centrifugal block to complete the fixing, which is quick and flexible, and saves the traditional need for grinding wheel positioning, and then tightening the bolt, and the need for multiple bolts to be evenly tightened to ensure concentricity and other problems. Since the grinding wheel is fixed on the power spindle through the flange, the flange connecting shaft and the centrifugal block, there is a large gap between the grinding wheel and the power spindle, which greatly reduces the adhesion of dust on the power spindle during polishing, reduces the possibility of dust entering the power spindle, and reduces the failure rate of the power spindle. The overall installation structure reduces the problem of grinding wheel replacement and improves production efficiency. When the power spindle rotates, the centrifugal block will generate an outward centrifugal force, that is, the clamping slope is more tightly fixed in the "V" groove under the action of the centrifugal force.

[0007] Further, the adjusting device comprises a centrifugal block cover, a centrifugal block rotating pin and a first spring, the centrifugal block cover has an installation cavity therein, the centrifugal block is rotationally fixed in the installation cavity through the centrifugal block rotating pin, the centrifugal block cover is fixed on the power spindle, and the first spring is fixed on the centrifugal block cover and abuts against the centrifugal block, for pushing the clamping slope to clamp in the "V" groove. First, the centrifugal block is rotationally arranged through the centrifugal block rotating pin, when the prefabricated kit is installed, the centrifugal block can be rotated to move the clamping slope away from the flange connecting shaft to be installed, and when it needs to be fixed, the centrifugal block is rotated under the pushing of the first spring, so that the clamping slope is always clamped in the "V" groove, that is, the connection and fixation of the flange connecting shaft and the centrifugal block are completed, so that the centrifugal block can drive the prefabricated kit to rotate under the driving of the power spindle; when the prefabricated kit needs to be removed, the above operation is repeated, and only the centrifugal block needs to be rotated to realize the separation of the centrifugal block and the prefabricated kit. The centrifugal block cover is fixed on the power spindle through the fourth bolt.

[0008] Further, the side wall of the flange connecting shaft is polygonal, the centrifugal block cover and the flange are respectively provided with polygonal connecting holes corresponding to the polygonal side wall of the flange connecting shaft, and the flange connecting shaft is connected and fixed with the flange and the centrifugal block cover through the polygonal connecting holes. Since the clamping inclined surface on the centrifugal block is clamped in the "V"-shaped groove on the centrifugal block, when the power spindle rotates, the centrifugal block and the flange connecting shaft may slip due to insufficient friction between the clamping inclined surface and the "V"-shaped groove. By setting the side wall of the flange connecting shaft to be polygonal and respectively setting corresponding polygonal connecting holes on the centrifugal block cover and the flange, the problem of slippage can be effectively prevented, and the fixing effect of the flange connecting shaft with the flange and the centrifugal block cover is ensured. That is, the cooperation between the clamping inclined surface and the "V"-shaped groove is for the vertical direction fixation of the prefabricated set, and the cooperation between the side wall of the flange connecting shaft and the flange and the centrifugal block cover is for the horizontal direction fixation when the prefabricated set rotates.

[0009] Further, the adjusting device further comprises a third bolt and a ball pin, the side wall of the centrifugal block cover is provided with a bolt through hole corresponding to the third bolt, the third bolt is fixed in the bolt through hole, the ball pin is fixed on the third bolt through the first spring, and the ball pin abuts against the centrifugal block. Since the centrifugal block needs to rotate, in order to be more stable under the action force on the centrifugal block, the ball pin with larger contact area is more effective. The contact surface between the ball pin and the centrifugal block is in the form of a circular arc, and the sliding effect is good. When the centrifugal block needs to rotate, no pre-stress is generated to damage the first spring or the centrifugal block, and the service life of the first spring is longer. The third bolt is used to fix the first spring, so that the first spring with poor elasticity can be replaced, and the later maintenance is more convenient.

[0010] Further, the centrifugal block comprises a bending part and a main body part, the centrifugal block is in the form of "L", the clamping inclined surface is located on the bending part, the bending part and the main body part have a rotating pin through hole, and the centrifugal block rotating pin is rotationally fixed in the rotating pin through hole. When the centrifugal block needs to rotate, the end of the main body part is pushed by a finger, so that the rotation of the centrifugal block on the centrifugal block rotating pin is realized, and then the clamping inclined surface on the bending part is clamped in or away from the "V"-shaped groove. The cross-sectional area and weight of the main body part are much larger than those of the bending part, the main body part is located at the periphery of the installation cavity, and the bending part is located at the middle part of the installation cavity. When the power spindle rotates, the main body part generates a large centrifugal force, that is, the centrifugal block generates a certain rotation under the action of the centrifugal force, and the clamping inclined surface on the bending part is clamped in the "V"-shaped groove more tightly and firmly.

[0011] Further, the centrifugal blocks are at least two, the plurality of the centrifugal blocks are uniformly fixed in the centrifugal block cover, the clamping inclined surfaces on the plurality of the bending parts form clamping intervals, and the V-shaped grooves are located in the clamping intervals. The plurality of the centrifugal blocks are enclosed together to form the clamping intervals, and the centrifugal blocks and the flange connecting shaft are clamped more balanced and stable, and the clamping and fixing effect is good.

[0012] Further, the centrifugal block cover has a mounting hole in communication with the mounting cavity on the side wall, and the end of the main body part away from the bending part extends to the outside of the centrifugal block cover through the mounting hole, so that the main body part of the centrifugal block is convenient for an operator to contact and rotate the centrifugal block to replace the prefabricated sleeve.

[0013] Further, the mounting structure further comprises a locking sleeve, the centrifugal block cover has a limiting step, the locking sleeve has a locking sleeve cover body corresponding to the limiting step, the locking sleeve cover body is fastened on the limiting step, and the end of the main body part extending to the outside of the centrifugal block cover is located in the locking sleeve. Specifically, the limiting step comprises a clamping part and a limiting part, the locking sleeve cover body has a center hole corresponding to the clamping part, the clamping part is arranged in the center hole, and the locking sleeve cover body is clamped on the limiting part, so that the mounting and fixing of the locking sleeve and the centrifugal block cover are completed. Meanwhile, the locking sleeve is sleeved on the outside of the centrifugal block cover, and a certain space is formed between the two; meanwhile, the centrifugal block is also located in the locking sleeve, and when the power main shaft rotates at high speed, the centrifugal block can be prevented from generating a large centrifugal force to separate from the centrifugal block cover, so as to further ensure safety.

[0014] Further, in order to limit the up-down movement and horizontal shaking of the locking sleeve, the mounting structure further comprises a ball head plunger, the centrifugal block cover is provided with a plunger mounting groove, the ball head plunger is fixed in the plunger mounting groove, an inner wall of the locking sleeve is provided with a plunger ring groove corresponding to the ball head plunger, and the ball head plunger is abutted in the plunger ring groove, so that the ball head plunger is abutted in the plunger ring groove to prevent the up-down movement and horizontal shaking of the locking sleeve when rotating at high speed. Since the head of the ball head plunger can be elastically stretched and contracted, when the locking sleeve is mounted, the locking sleeve can be mounted on the centrifugal block cover, and the head of the ball head plunger is stretched and contracted to slide into the plunger ring groove, so as to play a limiting and fixing role.

[0015] Compared with the prior art, the advantages of the present application are that:

[0016] (1) the flange and the flange connecting shaft are fixed to form a prefabricated set, the clamping bevel of the centrifugal block and the V-shaped groove of the flange connecting shaft are matched and clamped, the grinding wheel is quickly replaced, and time is saved;

[0017] (2) the up-down direction of the prefabricated set is limited by the matching of the clamping bevel and the V-shaped groove, and the horizontal rotation of the prefabricated set is limited by the matching of the polygonal shape of the flange connecting shaft and the polygonal connecting hole of the centrifugal block cover and the flange;

[0018] (3) the centrifugal block is provided with a bending part and a main part, the bending part is responsible for clamping the flange connecting shaft, the main part is responsible for manually rotating the centrifugal block, and when rotating at high speed, a large centrifugal force acts on the bending part, so that the bending part is clamped on the flange connecting shaft more tightly.

[0019] (4) the locking sleeve is added, which prevents the centrifugal block from being thrown out at high speed to hurt the operator, and further ensures safety. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the content of the application more easily and clearly understood, the application will be further described in detail below according to specific embodiments and in combination with the drawings, in which

[0021] Figure 1 is an exploded view of the grinding wheel quick replacement structure in the application;

[0022] Figure 2 is a schematic view of the plurality of centrifugal blocks and ball head pins in the application;

[0023] Figure 3 is a schematic view of the centrifugal block cover in the application;

[0024] Figure 4 is a schematic view of the flange connecting shaft in the application;

[0025] Figure 5 is a schematic view of the flange structure in the application;

[0026] Figure 6 is a schematic view of the locking sleeve structure in the application.

[0027] Explanation of reference numerals: 1 flange; 2 flange connecting shaft; 3 centrifugal block; 4 power main shaft; 5 grinding wheel; 6 first bolt; 7 second bolt; 8 gasket; 9 "V" groove; 10 clamping inclined surface; 11 centrifugal block cover; 12 centrifugal block rotating pin; 13 mounting cavity; 14 first spring; 15 polygonal connecting hole; 16 third bolt; 17 ball head pin; 18 bolt through hole; 19 bending part; 20 main body part; 21 rotating pin through hole; 22 clamping interval; 23 mounting hole; 24 locking sleeve; 25 limiting step; 26 locking sleeve cover body; 28 clamping part; 29 limiting part; 30 ball head plunger; 31 plunger mounting groove; 32 plunger ring groove; 33 fourth bolt. DETAILED DESCRIPTION

[0028] The present application will be described in detail below with reference to the embodiments shown in the drawings. However, the embodiments are not intended to limit the present application, and any changes in structure, method, or function made by those skilled in the art based on the embodiments are included in the scope of the present application.

[0029] Embodiment:

[0030] As Figures 1-5The embodiment shown provides a quick mounting structure of a grinding wheel. The mounting structure can be arranged vertically or horizontally. The embodiment takes the vertical arrangement as an example. If the mounting structure is arranged horizontally, the direction terms in the description are changed accordingly. The specific structure includes a flange 1, a flange connecting shaft 2, a centrifugal block 3 and a power spindle 4. A grinding wheel 5 is fixed on the flange 1 by a first bolt 6. The flange 1 is fixed on one end of the flange connecting shaft 2 by a second bolt 7. The other end of the flange connecting shaft 2 has a V-shaped groove 9. The centrifugal block 3 is provided with a clamping inclined surface 10 matched with the V-shaped groove 9. The clamping inclined surface 10 is clamped in the V-shaped groove 9 by an adjusting device. The centrifugal block 3 is fixed on the power spindle 4. First, the grinding wheel 5 is fixed on the flange 1 by the first bolt 6 or other fixing methods such as buckles. Then, the flange 1 is fixed on one end of the flange connecting shaft 2 by the second bolt 7 and a gasket 8. In this way, a prefabricated kit is formed. The prefabricated kit can be prepared in advance or several prefabricated kits can be prepared. The other end of the flange connecting shaft 2 is connected and fixed to the centrifugal block 3 by the clamping of the V-shaped groove 9 and the clamping inclined surface 10. That is, when the grinding wheel 5 needs to be replaced, the flange connecting shaft 2 of the prefabricated kit is clamped to the centrifugal block 3 to complete the fixing. The fixing method is quick and flexible, which eliminates the problems of traditional methods, such as positioning the grinding wheel 5 and then tightening the bolt, and the need to evenly tighten multiple bolts to ensure concentricity. Since the grinding wheel 5 is fixed on the power spindle 4 by the flange 1, the flange connecting shaft 2 and the centrifugal block 3, there is a large gap between the grinding wheel 5 and the power spindle 4. This greatly reduces the adhesion of dust on the power spindle 4 during polishing, reduces the possibility of dust entering the power spindle 4 and reduces the failure rate of the power spindle 4. The mounting structure overall reduces the problem of replacing the grinding wheel 5 and improves the production efficiency. When the power spindle 4 rotates, the centrifugal block 3 will generate an outward centrifugal force. That is, the clamping inclined surface 10 is more tightly fixed in the V-shaped groove 9 under the action of the centrifugal force.

[0031] Preferably, the adjusting device comprises a centrifugal block cover 11, a centrifugal block rotating pin 12 and a first spring 14, the centrifugal block cover 11 has a mounting cavity 13 inside, the centrifugal block 3 is rotationally fixed in the mounting cavity 13 through the centrifugal block rotating pin 12, the centrifugal block cover 11 is fixed on the power main shaft 4, and the first spring 14 is fixed on the centrifugal block cover 11 and abuts against the centrifugal block 3, and is used for pushing the clamping inclined surface 10 to be clamped in the “V”-shaped groove 9. First, the centrifugal block 3 is rotationally arranged through the centrifugal block rotating pin 12, when the prefabricated set is installed, the centrifugal block 3 can be rotated, the clamping inclined surface 10 is away from the flange connecting shaft 2 to be installed, and the centrifugal block 3 is rotated under the pushing of the first spring 14 when it is needed to be fixed, so that the clamping inclined surface 10 is always clamped in the “V”-shaped groove 9, that is, the connection and fixation of the flange connecting shaft 2 and the centrifugal block 3 are completed, so that the centrifugal block 3 can drive the prefabricated set to rotate under the driving of the power main shaft 4; when the prefabricated set needs to be removed, the above operation is repeated, and the centrifugal block 3 and the prefabricated set can be separated only by rotating the centrifugal block 3. The centrifugal block cover 11 is fixed on the power main shaft 4 through the fourth bolt 33.

[0032] Preferably, the centrifugal block 3 comprises a bending part 19 and a main body part 20, the centrifugal block 3 is in “L” shape, the clamping inclined surface 10 is located on the bending part 19, the bending part 19 and the main body part 20 have a rotating pin through hole 21 therebetween, and the centrifugal block rotating pin 12 is rotationally fixed in the rotating pin through hole 21. When the centrifugal block 3 needs to be rotated, the end of the main body part 20 is pushed by a finger, so that the centrifugal block 3 is rotated on the centrifugal block rotating pin 12, and then the clamping inclined surface 10 on the bending part 19 is clamped in or away from the “V”-shaped groove 9. The cross-sectional area and weight of the main body part 20 are far greater than those of the bending part 19, the main body part 20 is located at the periphery of the mounting cavity 13, and the bending part 19 is located at the middle part of the mounting cavity 13. When the power main shaft 4 rotates, the main body part 20 generates a larger centrifugal force, that is, the centrifugal block 3 generates a certain rotation under the action of the centrifugal force, and the clamping inclined surface 10 on the bending part 19 is clamped in the “V”-shaped groove 9 more tightly and firmly. The centrifugal block 3 is at least two, and a plurality of centrifugal blocks 3 are uniformly fixed in the centrifugal block cover 11. A clamping interval 22 is formed between a plurality of clamping inclined surfaces 10 on the bending parts 19, and the “V”-shaped groove 9 is located in the clamping interval 22. A plurality of centrifugal blocks 3 are enclosed together to form the clamping interval 22, so that the centrifugal block 3 and the flange connecting shaft 2 are clamped more balanced and stable, and the clamping and fixation effect is good.

[0033] Preferably, the side wall of the centrifugal block cover 11 has a mounting hole 23 communicating with the mounting cavity 13, and the end of the main body part 20 away from the bent part 19 extends to the outside of the centrifugal block cover 11 through the mounting hole 23, so that the operator can contact the main body part 20 of the centrifugal block 3 and rotate the centrifugal block 3 to replace the prefabricated set.

[0034] Preferably, the adjusting device further comprises a third screw 16 and a ball pin 17. The side wall of the centrifugal block cover 11 is provided with a screw through hole 18 corresponding to the third screw 16. The third screw 16 is fixed in the screw through hole 18. The ball pin 17 is fixed on the third screw 16 through the first spring 14, and the ball pin 17 abuts against the centrifugal block 3. Since the centrifugal block 3 needs to be rotated, in order to be more stable under the action force on the centrifugal block 3, the ball pin 17 with larger contact area is more effective. The contact surface between the ball pin 17 and the centrifugal block 3 is in the form of a circular arc, which has good sliding effect and will not generate prestress to damage the first spring 14 or the centrifugal block 3 when the centrifugal block 3 needs to be rotated, and the service life of the first spring 14 will be longer. The third screw 16 is used to fix the first spring 14, which can facilitate the replacement of the first spring 14 with poor elasticity, and the later maintenance is more convenient.

[0035] As shown in FIGS. 1 and 2, Figures 3-5 As shown in FIGS. 1 and 2,

[0036] As shown in FIGS. 1 and 2, Figure 6As shown, the mounting structure further comprises a locking sleeve 24, the centrifugal block cover 11 has a limiting step 25, the locking sleeve 24 has a locking sleeve cover 26 corresponding to the limiting step 25, the locking sleeve cover 26 is fastened on the limiting step 25, and the end of the main body 20 extending out of the centrifugal block cover 11 is located in the locking sleeve 24. Specifically, the limiting step 25 comprises a clamping portion 28 and a limiting portion 29, the locking sleeve cover 26 has a central hole corresponding to the clamping portion 28, the clamping portion 28 is arranged in the central hole, and the locking sleeve cover 26 is clamped on the limiting portion 29, so that the mounting and fixing of the locking sleeve 24 and the centrifugal block cover 11 are completed. Meanwhile, the locking sleeve 24 is sleeved outside the centrifugal block cover 11, the centrifugal block 3 is also located in the locking sleeve 24, and when the power spindle 4 rotates at high speed, the centrifugal block 3 can be prevented from being separated from the centrifugal block cover 11 due to a large centrifugal force, thereby further ensuring safety.

[0037] Preferably, in order to limit the up-down movement and horizontal shaking of the locking sleeve 24, the mounting structure further comprises a ball head plunger 30, the centrifugal block cover 11 is provided with a plunger mounting groove 31, the ball head plunger 30 is fixed in the plunger mounting groove 31, the inner wall of the locking sleeve 24 is provided with a plunger ring groove 32 corresponding to the ball head plunger 30, and the ball head plunger 30 abuts against the plunger ring groove 32. In this way, the ball head plunger 30 abuts against the plunger ring groove 32, thereby preventing the up-down movement and horizontal shaking of the locking sleeve 24 when rotating at high speed.

[0038] Working principle: the grinding wheel 5 is fixed on the flange 1, then the flange 1 is fixed on one end of the flange connecting shaft 2 through the second bolt 7 and the gasket 8, so that a prefabricated assembly is formed, the prefabricated assembly can be prepared in advance, or several prefabricated assemblies can be prepared; the other end of the flange connecting shaft 2 is connected and fixed to the clamping inclined surface 10 on the centrifugal block 3 through the “V”-shaped groove 9 in a clamping mode, that is, when the grinding wheel 5 needs to be replaced, the flange connecting shaft 2 of the prefabricated assembly can be clamped to the centrifugal block 3 to complete the fixing, the fixing mode is quick and flexible, the problem of time-consuming and laborious replacement of the grinding wheel 5 is reduced, and the production efficiency is improved.

[0039] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, but can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

[0040] Furthermore, it should be understood that, although the specification is described in terms of examples, the specification is not to be limited to only the described examples. The described examples are to be considered in a sense illustrative and not restrictive, and there is no intent to exclude any additional examples from the scope of the specification.

Claims

1. A quick mounting structure of a grinding wheel, characterized by comprising: The flange (1), the flange connecting shaft (2), the centrifugal block (3) and the power main shaft (4), the grinding wheel (5) is fixed on the flange (1), the flange (1) is fixed on one end of the flange connecting shaft (2), the other end of the flange connecting shaft (2) has a 'V' groove (9), the centrifugal block (3) is provided with a clamping inclined surface (10) matched with the 'V' groove (9), the clamping inclined surface (10) is clamped in the 'V' groove (9) through the adjusting device, and the centrifugal block (3) is fixed on the power main shaft (4); The adjusting device comprises a centrifugal block cover (11), a centrifugal block rotating pin (12) and a first spring (14), the centrifugal block cover (11) has an installation cavity (13) therein, the centrifugal block (3) is rotationally fixed in the installation cavity (13) through the centrifugal block rotating pin (12), the centrifugal block cover (11) is fixed on the power main shaft (4), and the first spring (14) is fixed on the centrifugal block cover (11) and abuts against the centrifugal block (3) and is used for pushing the clamping inclined surface (10) to be clamped in the 'V' groove (9); The adjusting device further comprises a third bolt (16) and a ball head pin (17), a bolt through hole (18) corresponding to the third bolt (16) is formed in the side wall of the centrifugal block cover (11), the third bolt (16) is fixed in the bolt through hole (18), the ball head pin (17) is fixed on the third bolt (16) through the first spring (14), and the ball head pin (17) abuts against the centrifugal block (3); The centrifugal block (3) comprises a bending part (19) and a main body part (20), the centrifugal block (3) is in the shape of 'L', the clamping inclined surface (10) is located on the bending part (19), and the bending part (19) and the main body part (20) are provided with a rotating pin through hole (21) therebetween, and the centrifugal block rotating pin (12) is rotationally fixed in the rotating pin through hole (21).

2. The quick mounting structure of the grinding wheel according to claim 1, wherein The side wall of the flange connecting shaft (2) is polygonal, the centrifugal block cover (11) and the flange (1) are respectively provided with polygonal connecting holes (15) corresponding to the polygonal side wall of the flange connecting shaft (2), and the flange connecting shaft (2) is connected and fixed with the flange (1) and the centrifugal block cover (11) through the polygonal connecting holes (15).

3. The quick mounting structure of the grinding wheel according to claim 1, wherein The centrifugal block (3) is at least two, a plurality of the centrifugal blocks (3) are uniformly fixed in the centrifugal block cover (11), the clamping inclined surfaces (10) on a plurality of the bending parts (19) form a clamping interval (22), and the 'V' groove (9) is located in the clamping interval (22).

4. The quick mounting structure of the grinding wheel according to claim 1, wherein The side wall of the centrifugal block cover (11) is provided with an installation hole (23) communicating with the installation cavity (13), and one end of the main body part (20) away from the bending part (19) extends to the outside of the centrifugal block cover (11) through the installation hole (23).

5. The quick mounting structure of the grinding wheel according to claim 4, wherein The mounting structure further comprises a locking sleeve (24), the centrifugal block cover (11) is provided with a limiting step (25), the locking sleeve (24) is provided with a locking sleeve cover body (26) corresponding to the limiting step (25), the locking sleeve cover body (26) is fastened on the limiting step (25), and the end portion of the main body portion (20) extending to the outside of the centrifugal block cover (11) is located in the locking sleeve (24).

6. The quick mounting structure of the grinding wheel according to claim 5, wherein The mounting structure further comprises a ball head plunger (30), the centrifugal block cover (11) is provided with a plunger mounting groove (31), the ball head plunger (30) is fixed in the plunger mounting groove (31), and the inner wall of the locking sleeve (24) is provided with a plunger ring groove (32) corresponding to the ball head plunger (30), and the ball head plunger (30) is abutted in the plunger ring groove (32).

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