CN114571363A

CN114571363A - Abrasive grinding tool

Info

Publication number: CN114571363A
Application number: CN202210478212.5A
Authority: CN
Inventors: 李智
Original assignee: Goma Abrasive Tools Nantong Co ltd
Current assignee: Goma Abrasive Tools Nantong Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-06-03
Anticipated expiration: 2042-05-05
Also published as: CN114571363B

Abstract

The invention provides an abrasive grinding tool which comprises an abrasive grinding tool main body, wherein an annular limiting part is fixedly sleeved at the end part of the abrasive grinding tool main body in a surrounding manner, a plurality of limiting grooves are uniformly formed in the end part of the annular limiting part, a telescopic rod is movably inserted into the limiting grooves, the end part of the telescopic rod is matched with the structure of the limiting grooves, a limiting frame is arranged at the outer end of the abrasive grinding tool main body, the telescopic rod is rotatably arranged on the limiting frame, a rotating shaft I is fixedly connected with the top of the limiting frame, a limiting fixing component is further arranged at the upper end of the abrasive grinding tool main body, and the limiting fixing component is fixedly connected with the limiting frame. The telescopic rod is matched with the limiting fixing piece and the annular limiting piece, so that the abrasive grinding tool main body can be fixed in all directions, and the influence on the grinding effect caused by vibration of the abrasive grinding tool main body is reduced in the grinding process.

Description

Abrasive grinding tool

Technical Field

The invention relates to the technical field of abrasive tools, in particular to an abrasive tool.

Background

The utility model provides a effectual abrasive material grinding apparatus of grinding for CN107891359A, includes first fixed plate and second fixed plate, the second fixed plate is located the below of first fixed plate, the top of first fixed plate and the bottom fixed connection of spliced pole, the left and right sides of first fixed plate all is provided with first fixed block, the left and right sides of second fixed plate all is provided with the second fixed block. The device moves the partition plate through the fixed column, the pressing rod drives the pressing block to move the second spring and the connecting rod drives the connecting block to act on the third spring, so that the second fixing plate can conveniently drive the abrasive grinding tool body to slide along the surface of the guide rod, and the abrasive grinding tool body can be reliably contacted with the material all the time when the connecting column drives the abrasive grinding tool body to rotate, and the grinding effect is improved. However, the device has a single function, and the grinding effect of the abrasive tool is affected due to the poor fixing effect on the abrasive tool body.

Disclosure of Invention

The present invention is directed to an abrasive grinding tool to solve the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an abrasive grinding apparatus, includes abrasive grinding apparatus main part, encircles the fixed cover of tip of abrasive grinding apparatus main part is equipped with an annular locating part, is located a plurality of spacing grooves have evenly been seted up to the tip of annular locating part, be cylindric structure in the one end of abrasive grinding apparatus main part is kept away from to the spacing groove, and it is close to and is polyhedral structure in the one end of abrasive grinding apparatus main part, is located spacing inslot activity is inserted and is equipped with a telescopic link, just the tip and the spacing inslot structure looks adaptation of telescopic link set up, are located the outer end of abrasive grinding apparatus main part is equipped with a spacing, on the rotatable locating spacing of telescopic link, with top fixed connection of spacing is equipped with a rotation axis I, is located the upper end of abrasive grinding apparatus main part still is equipped with a spacing fixed subassembly, just spacing fixed subassembly meets with spacing.

Preferably, spacing includes the limiting plate and fixes a plurality of spacing stake that meet with the limiting plate, and is a plurality of spacing stake with the spacing groove corresponds the setting, and is a plurality of spacing stake and limiting plate enclose jointly into the spacing chamber that is used for holding abrasive material grinding apparatus main part, the rotatable lower extreme of locating spacing stake of telescopic link, the fixed top of locating the limiting plate of axis of rotation I, and work as when the telescopic link is inserted and is established in the spacing inslot, the bottom surface of abrasive material grinding apparatus main part is located the lower extreme setting of spacing stake bottom surface for the limiting plate.

Preferably, spacing fixed subassembly includes the vertical movable loading board of locating in the limiting plate, the upper end of loading board meets with the fixed flexible motor element of locating in the limiting plate, and its lower extreme is fixed to be equipped with an axis of rotation II, with the lower extreme activity of axis of rotation II meets is equipped with first locating part, with the tip fixed connection of axis of rotation II is equipped with the second locating part, the lower terminal surface of first locating part and second locating part sets up corresponding to the up end of abrasive tool main part, just the bottom surface of second locating part sets up for the upper end that the limiting plate is located first locating part bottom surface.

Preferably, first locating part include a carrier bar and with carrier bar fixed connection's "ten" font carrier bar, be located the lower extreme of carrier bar evenly is equipped with a plurality of spacing archs, is located the lower terminal surface of carrier bar still evenly distributed has a plurality of brush hairs that are used for clearing up abrasive material grinding apparatus main part surface, the upper end of carrier bar is the opening form and inside and describes the setting for hollow structure, the vertical activity of the lower extreme of axis of rotation II is inserted and is established in the carrier bar, and works as when II rotations of axis of rotation, synchronous rotating-state is made to the carrier bar.

Preferably, the second locating part includes a plurality of end fixing connection rods that meet with axis of rotation II, is located the fixed connecting post that is equipped with in bottom of connecting rod, the lower extreme of connecting post is the setting of opening form and inside hollow structure form, and the vertical activity insert establish the connecting post in be equipped with a spacing post, be located be equipped with a spring between spacing post and the connecting post, just the upper end and the connecting post fixed connection of spring, its lower extreme and spacing post fixed connection work as when the spring is in the state of natural stretching out and drawing back, the bottom surface of spacing post and the up end contactless setting of abrasive material grinding apparatus main part.

Preferably, one end of the limiting groove close to the abrasive tool body is internally provided with a regular tetrahedron structure, and the area of the end face of the regular tetrahedron structure, which is contacted with the cylindrical structure in the limiting groove, is smaller than the area of the bottom surface of the cylindrical structure.

Preferably, the spacing groove is equipped with everywhere, and even and symmetrical distribution is in the side end face of annular locating part, and when and only have the spacing inslot interpolation of two symmetric distributions to be equipped with the telescopic link, and the tip of telescopic link is located the cylindric structure of spacing groove, but abrasive material grinding apparatus main part is in free rotation state on vertical face, and when and only have the spacing inslot interpolation of two symmetric distributions to be equipped with the telescopic link, and the tip of telescopic link is located the regular tetrahedron structure of spacing groove, abrasive material grinding apparatus main part and this telescopic link can make synchronous rotation state in the vertical direction.

Preferably, the annular locating part includes a plurality of arc connecting pieces, the quantity of arc connecting piece and the corresponding setting of quantity of spacing groove are adjacent be equipped with the clearance between the arc connecting piece, and adjacent through a threaded rod fixed connection between the arc connecting piece, work as when the threaded rod clockwise turning, two arc connecting pieces that meet with this threaded rod are in the moving state that is close to each other.

Compared with the prior art, the invention has the beneficial effects that:

the grinding tool main body can be fixed in all directions by matching the telescopic rod with the limiting fixing piece and the annular limiting piece, so that the influence on the grinding effect caused by vibration of the grinding tool main body is reduced in the process of grinding operation; the grinding tool main body can be turned over by observing whether the grinding tool main body is obviously inclined or not, and the grinding tool main body can be conveniently and quickly replaced and is convenient to use; in addition, the end face of the abrasive grinding tool main body can be cleaned through the bristles arranged at the lower end of the first limiting part, so that after grinding operation, the surface of the abrasive grinding tool main body is timely repaired, abrasive grains which fall off but do not fall off are removed, the influence on the cutting capacity due to the fact that edges and corners become dull and air holes are cut and blocked is reduced, and the workpiece grinding effect is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the spacing fixture assembly of the present invention when it is not in contact with the abrasive tool body;

FIG. 2 is a schematic view of the overall structure of the present invention when the protrusions are in contact with the abrasive tool body;

FIG. 3 is a schematic view of a fitting structure of an annular stopper and an abrasive tool body according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1;

FIG. 5 is a schematic view of the engagement structure of the threaded rod and the arc-shaped connecting member according to the present invention;

FIG. 6 is a schematic view of the telescopic rod of the present invention;

FIG. 7 is a schematic view of a structure of a first limiting member and a second limiting member;

FIG. 8 is a schematic view of the fitting structure of the connecting column and the limiting column when the spring is in a natural expansion state;

fig. 9 is a schematic view of the fitting structure of the limiting post and the connecting post when the spring is in a compressed state.

In the figure: 1 abrasive tool main part, 2 annular locating parts, 201 spacing groove, 202 arc connecting piece, 203 threaded rod, 3 telescopic link, 4 spacing framves, 401 limiting plate, 402 spacing stake, 5 axis of rotation I, 6 spacing fixed component, 601 loading board, 602 flexible motor assembly, 603 axis of rotation II, 604 first locating part, 6041 bearing pile, 6042 bearing bar, 6043 spacing arch, 6044 brush hair, 605 second locating part, 6051 connecting rod, 6052 spliced pole, 6053 spacing post, 6054 spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1 to 9, the present invention provides a technical solution:

an abrasive grinding tool comprises an abrasive grinding tool main body 1, an annular limiting part 2 is fixedly sleeved around the end part of the abrasive grinding tool main body 1, a plurality of limiting grooves 201 are uniformly formed in the end part of the annular limiting part 2, the end part, far away from the abrasive grinding tool main body 1, of each limiting groove 201 is of a cylindrical structure, the end part, close to the abrasive grinding tool main body 1, of each limiting groove is of a polyhedral structure, a telescopic rod 3 is movably inserted into each limiting groove 201, the end part of each telescopic rod 3 is matched with the structure in each limiting groove 201, a limiting frame 4 is arranged at the outer end of the abrasive grinding tool main body 1, each telescopic rod 3 is rotatably arranged on each limiting frame 4, a rotating shaft I5 is fixedly connected with the top of each limiting frame 4, a limiting fixing component 6 is further arranged at the upper end of the abrasive grinding tool main body 1, and each limiting fixing component 6 is fixedly connected with each limiting frame 4; wherein, one end of the limiting groove 201 close to the abrasive tool body 1 is internally provided with a regular tetrahedron structure, and the area of the end surface of the regular tetrahedron structure, which is contacted with the cylindrical structure in the limiting groove 201, is smaller than the area of the bottom surface of the cylindrical structure; the limiting groove 201 is provided with four positions, the limiting groove is uniformly and symmetrically distributed on the side end surface of the annular limiting part 2, when only two symmetrically distributed limiting grooves 201 are provided with the telescopic rods 3 in an inserted mode, and the end parts of the telescopic rods 3 are located in the cylindrical structure of the limiting groove 201, the abrasive grinding tool main body 1 is in a freely rotatable state on the vertical surface, when only two symmetrically distributed limiting grooves 201 are provided with the telescopic rods 3 in an inserted mode, and the end parts of the telescopic rods 3 are located in the regular tetrahedron structure of the limiting groove 201, the abrasive grinding tool main body 1 and the telescopic rods 3 can be in a synchronous rotatable state in the vertical direction; the annular limiting part 2 comprises a plurality of arc-shaped connecting pieces 202, the number of the arc-shaped connecting pieces 202 corresponds to the number of the limiting grooves 201, a gap is arranged between every two adjacent arc-shaped connecting pieces 202, the adjacent arc-shaped connecting pieces 202 are fixedly connected through a threaded rod 203, and when the threaded rod 203 rotates clockwise, the two arc-shaped connecting pieces 202 connected with the threaded rod 203 are in a moving state of being close to each other;

specifically, the limiting frame 4 comprises a limiting plate 401 and a plurality of limiting piles 402 fixedly connected with the limiting plate 401, the plurality of limiting piles 402 are arranged corresponding to the limiting groove 201, the plurality of limiting piles 402 and the limiting plate 401 jointly enclose a limiting cavity for accommodating the abrasive grinding tool main body 1, the telescopic rod 3 is rotatably arranged at the lower end of the limiting pile 402, the rotating shaft I5 is fixedly arranged at the top of the limiting plate 401, and when the telescopic rod 3 is inserted into the limiting groove 201, the bottom surface of the abrasive grinding tool main body 1 is arranged at the lower end of the bottom surface of the limiting pile 402 relative to the limiting plate 401;

specifically, the limiting and fixing assembly 6 includes a vertically movable bearing plate 601 disposed in the limiting plate 401, the upper end of the bearing plate 601 is connected to a telescopic motor assembly 602 fixedly disposed in the limiting plate 401, the lower end of the bearing plate is fixedly provided with a rotating shaft ii 603, a first limiting member 604 movably connected to the lower end of the rotating shaft ii 603, and a second limiting member 605 fixedly connected to the end of the rotating shaft ii 603, the lower end surfaces of the first limiting member 604 and the second limiting member 605 are disposed corresponding to the upper end surface of the abrasive tool body 1, and the bottom surface of the second limiting member 605 is disposed at the upper end of the bottom surface of the first limiting member 604 relative to the limiting plate 401; the first limiting part 604 comprises a bearing pile 6041 and a cross-shaped bearing rod 6042 fixedly connected with the bearing pile 6041, a plurality of limiting protrusions 6043 are uniformly arranged at the lower end of the bearing rod 6042, a plurality of bristles 6044 used for cleaning the surface of the abrasive tool main body 1 are uniformly distributed on the lower end face of the bearing rod 6042, the upper end of the bearing pile 6041 is open and the inside of the bearing pile 6041 is hollow, the lower end of the rotating shaft II 603 is vertically and movably inserted into the bearing pile 6041, and when the rotating shaft II 603 rotates, the bearing pile 6041 is in a synchronous rotating state; the second locating part 605 includes a plurality of end fixing connection connecting rods 6051 with the axis of rotation ii 603, the bottom that is located connecting rod 6051 is fixed to be equipped with a spliced pole 6052, the lower extreme of spliced pole 6052 is the setting of opening form and inside hollow structure form, vertical activity insert and establish and be equipped with a spacing post 6053 in spliced pole 6052, be located and be equipped with a spring 6054 between spacing post 6053 and the spliced pole 6052, and the upper end and the spliced pole 6052 fixed connection of spring 6054, its lower extreme and spacing post 6053 fixed connection, when spring 6054 is in the natural state of stretching out and drawing back, the bottom surface of spacing post 6053 and the up end contactless setting of abrasive tool main part 1.

The use principle of the invention is as follows: when the grinding tool is used, firstly, the grinding tool main body 1 is limited and fixed, specifically, the threaded rod 203 is rotated clockwise to adjust the gap between the adjacent arc-shaped connecting pieces 202, so that the grinding tool main body 1 is fastened and limited through the annular limiting piece 2, then the telescopic rod 3 is controlled to extend and retract towards the limiting groove 201, the end part of the telescopic rod 3 is butted in a regular tetrahedron structure in the limiting groove 201, so that the grinding tool main body 1 is fixed and limited on the horizontal surface, finally, the bearing plate 601 is controlled to move towards the grinding tool main body 1 through the telescopic motor assembly 602, and then the first limiting piece 604 and the second limiting piece 605 are controlled to be limited and fixed from the upper end of the grinding tool main body 1, so that the grinding tool main body 1 is limited and fixed;

when the grinding tool is used, the limiting frame 4 is controlled to rotate through the rotating shaft I5, so that the grinding tool main body 1 is driven to carry out rotary grinding operation;

after finishing a grinding operation procedure, the main body 1 of the abrasive grinding tool is overhauled, and the specific process is as follows: the supporting plate 601 is controlled by the telescopic motor assembly 602 to move upwards for resetting, so as to drive the first limiting member 604 and the second limiting member 605 to reset, two telescopic rods 3 symmetrically distributed at the end part of the annular limiting member 2 among the four telescopic rods 3 are far away from the limiting groove 201 to be telescopic and separated from the limiting groove 201, the remaining two telescopic rods 3 symmetrically distributed at the end part of the annular limiting member 2 are controlled to be telescopic away from the limiting groove 201 to be positioned in the cylindrical structure of the limiting groove 201, when the abrasive tool main body 1 obviously inclines towards one end, the abrasive tool main body 1 needs to be replaced, when the abrasive tool main body 1 generally tends to a horizontal position, the grinding surface of the abrasive tool main body 1 is replaced, specifically, the telescopic rods 3 positioned in the cylindrical structure of the limiting groove 201 are controlled to extend towards the limiting groove 201, so that the end parts of the telescopic rods 3 are positioned in the regular tetrahedron structure of the limiting groove 201, then, the telescopic rods 3 are controlled to rotate, so that the abrasive tool main body 1 is turned over, namely, the original grinding surface is horizontally upward, and then the other telescopic rods 3 are controlled to move in a telescopic mode towards the limiting groove 201, so that the end parts of the telescopic rods 3 are located in a regular tetrahedron structure in the limiting groove 201, and therefore the abrasive tool main body 1 is limited and fixed; finally, the abrasive tool body 1 is limited and fixed by controlling the first limiting member 604 and the second limiting member 605, and the specific process is as follows:

the bearing plate 601 is controlled by the telescopic motor assembly 602 to move towards the upper end face of the abrasive tool body 1, so as to drive the rotating shaft II 603 to move towards the abrasive tool body 1, during the process that the rotating shaft II 603 moves towards the abrasive tool body 1, the first limiting piece 604 and the second limiting piece 605 synchronously move, when the brush 6044 contacts the upper end surface of the abrasive grinder body 1 and the stopper protrusion 6043 does not contact the upper end surface of the abrasive grinder body 1, at this time, the telescopic motor assembly 602 stops working, the rotating shaft II 603 is controlled to rotate, further driving the carrier bar 6042 to rotate, so that the surface of the abrasive tool body 1 which is subjected to grinding operation is cleaned through the bristles 6044, abrasive grains which fall off but do not fall off are removed, the influence on the cutting capacity due to the fact that edges and corners are dull and air holes are cut and blocked is reduced, and the grinding effect on workpieces is improved; then, stopping the rotation of the rotating shaft II 603, controlling the bearing plate 601 to continuously move downwards through the telescopic motor assembly 602, when the limit protrusion 6043 is abutted to the upper end face of the abrasive tool main body 1, the bearing rod 6042 does not move downwards any more, at this time, the lower end of the rotating shaft II 603 slides downwards in the bearing pile 6041, and stopping the telescopic motor assembly 602 from working until the bottom of the rotating shaft II 603 is abutted to the end face of the bottom of the cavity in the bearing pile 6041; in the process that the rotating shaft II 603 slides towards the abrasive tool body 1 in the bearing pile 6041, the lower end of the limiting column 6053 is in contact with the upper end face of the abrasive tool body 1, and the spring 6054 is continuously compressed under the action of the rotating shaft II 603, at the moment, the extrusion force of the limiting column 6053 on the abrasive tool body 1 is continuously enhanced until the rotating shaft II 603 does not move any more, so that after the end face of the abrasive tool body 1 is replaced, the limiting and fixing operation on the abrasive tool body 1 is completed, and then the limiting frame 4 is controlled to rotate through the rotating shaft I5 to drive the abrasive tool body 1 to rotate and grind;

when the abrasive tool main body 1 needs to be replaced, the telescopic motor assembly 602 controls the bearing plate 601 to move away from the abrasive tool main body 1 for resetting, and controls all the telescopic rods 3 to move away from the limiting grooves 201 in a telescopic mode and to be separated from the limiting grooves 201, so that the abrasive tool main body 1 can be replaced conveniently, and then a new abrasive tool main body 1 is replaced and installed according to the method, and the method is not described in detail;

the threads on the threaded rod 203 can be a combination of left-handed threads and right-handed threads, for example, the left end of the threaded rod 203 is a right-handed thread, and the right end of the threaded rod 203 is a left-handed thread, so that the adjacent arc-shaped connectors 202 are close to or far away from each other when the threaded rod 203 rotates, and the setting is specifically performed according to actual conditions;

the side end face of the bottom of the rotating shaft II 603 is provided with a limiting protrusion structure, and the limiting protrusion structure is arranged in a vertical chute matched with the limiting protrusion structure in the bearing pile 6041, so that the bearing pile 6041 can be driven to synchronously rotate when the rotating shaft II 603 rotates, and meanwhile, a clamping plate for blocking the limiting protrusion structure is arranged at an opening at the upper end of the bearing pile 6041, so that when the spring 6054 is not compressed, the bearing pile 6041 can synchronously move along with the rotating shaft II 603 in the vertical direction and is specifically arranged according to actual conditions;

the limiting column 6053 can also be provided with a hollow structure, so that the spring 6054 is arranged in the hollow structures of the connecting column 6052 and the limiting column 6053, and the connecting column 6052 and the limiting column 6053 are limited and fixed through the spring 6054 and are specifically arranged according to actual conditions;

the number and the positions of the limiting columns 6053 are not particularly limited, and are specifically set according to actual requirements;

the structure and the method for driving and controlling the rotation and the extension of the telescopic rod 3 can be realized by adopting the prior art, and the structure and the method are not particularly limited;

the telescopic motor assembly 602 adopts the prior art, and can control the movement of the bearing plate 601, and the driving control structure and method of the rotating shaft I5 and the rotating shaft II 603 adopt the prior art, which are not described in detail, wherein the related power supply circuit layouts of the rotating shaft I5, the rotating shaft II 603, the telescopic rod 3 and the telescopic motor assembly 602 are arranged according to the actual situation, and are not described in detail;

the limiting piles 402 are arranged at four positions, and the limiting piles 402 and the limiting plates 401 at the four positions form a limiting space structure for placing the abrasive tool body 1, namely, a limiting cavity with an opening.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An abrasive grinding tool comprising an abrasive grinding tool body (1), characterized in that: an annular limiting part (2) is fixedly sleeved on the end part of the abrasive grinding tool main body (1), a plurality of limiting grooves (201) are uniformly formed in the end part of the annular limiting part (2), one end, away from the abrasive grinding tool main body (1), of each limiting groove (201) is of a cylindrical structure, one end, close to the abrasive grinding tool main body (1), of each limiting groove is of a polyhedral structure, a telescopic rod (3) is movably inserted into each limiting groove (201), the end part of each telescopic rod (3) is matched with the inner structure of each limiting groove (201), a limiting frame (4) is arranged at the outer end of the abrasive grinding tool main body (1), each telescopic rod (3) is rotatably arranged on each limiting frame (4), a rotating shaft I (5) is fixedly connected with the top of each limiting frame (4), and a limiting fixing component (6) is further arranged at the upper end of the abrasive grinding tool main body (1), and the limiting fixing component (6) is fixedly connected with the limiting frame (4).

2. The abrasive grinding tool of claim 1, wherein: spacing (4) include limiting plate (401) and a plurality of spacing stake (402) that meet with limiting plate (401) is fixed, and is a plurality of spacing stake (402) with spacing groove (201) correspond the setting, and is a plurality of spacing stake (402) enclose the synthetic spacing chamber that is used for holding abrasive grinding apparatus main part (1) jointly with limiting plate (401), the rotatable lower extreme of locating spacing stake (402) of telescopic link (3), the top of locating limiting plate (401) is fixed in axis of rotation I (5), and works as when telescopic link (3) are inserted and are established in spacing groove (201), the bottom surface of abrasive grinding apparatus main part (1) is located the lower extreme setting of spacing stake (402) bottom surface for limiting plate (401).

3. The abrasive grinding tool of claim 2, wherein: the limiting and fixing component (6) comprises a bearing plate (601) which is vertically and movably arranged in a limiting plate (401), the upper end of the bearing plate (601) is connected with a telescopic motor component (602) which is fixedly arranged in the limiting plate (401), the lower end of the bearing plate is fixedly provided with a rotating shaft II (603), a first limiting part (604) is movably connected with the lower end of the rotating shaft II (603), a second limiting part (605) is fixedly connected with the end part of the rotating shaft II (603), the lower end faces of the first limiting part (604) and the second limiting part (605) are arranged corresponding to the upper end face of the abrasive grinding tool main body (1), and the bottom face of the second limiting part (605) is arranged corresponding to the upper end face of the bottom face of the first limiting part (604) of the limiting plate (401).

4. The abrasive grinding tool of claim 3, wherein: first locating part (604) include one bear stake (6041) and with bear stake (6041) fixed connection's "ten" font carrier bar (6042), be located the lower extreme of carrier bar (6042) evenly is equipped with a plurality of spacing archs (6043), is located the lower terminal surface of carrier bar (6042) still evenly distributed has a plurality of brush hair (6044) that are used for clearing up abrasive material grinding apparatus main part (1) surface, the upper end of bearing stake (6041) is the opening form and inside hollow structure form setting of being, inserting of the vertical activity of lower extreme of axis of rotation II (603) is established in bearing stake (6041), and works as when axis of rotation II (603) rotate, synchronous rotation state is made to bearing stake (6041).

5. The abrasive tool of claim 4, wherein: second locating part (605) includes a plurality of fixed connecting rod (6051) that meet of tip with axis of rotation II (603), is located the fixed connecting column (6052) that is equipped with in bottom of connecting rod (6051), the lower extreme of spliced pole (6052) is the opening form and inside sets up for hollow structure form, vertical activity insert and establish and be equipped with a spacing post (6053) in spliced pole (6052), is located be equipped with a spring (6054) between spacing post (6053) and spliced pole (6052), just the upper end and spliced pole (6052) fixed connection of spring (6054), its lower extreme and spacing post (6053) fixed connection work as when spring (6054) are in the natural telescopic state, the bottom surface and the up end contactless setting of abrasive material grinding apparatus main part (1) of spacing post (6053).

6. The abrasive grinding tool of claim 1, wherein: the grinding tool is characterized in that a regular tetrahedron structure is arranged in one end, close to the inside of the grinding tool main body (1), of the limiting groove (201), and the area of the end face, in contact with the cylindrical structure in the limiting groove (201), of the regular tetrahedron structure is smaller than the area of the bottom face of the cylindrical structure.

7. The abrasive grinding tool of claim 6, wherein: the grinding and grinding tool is characterized in that the limiting groove (201) is provided with four positions, the limiting groove (201) is uniformly and symmetrically distributed on the side end face of the annular limiting part (2), the telescopic rods (3) are inserted into the limiting groove (201) which is symmetrically distributed at two positions, the end part of each telescopic rod (3) is positioned in the cylindrical structure of the limiting groove (201), the grinding and grinding tool main body (1) is in a free rotating state on the vertical surface, the telescopic rods (3) are inserted into the limiting grooves (201) which are symmetrically distributed at two positions, and when the end part of each telescopic rod (3) is positioned in the regular tetrahedron structure of the limiting groove (201), the grinding and grinding tool main body (1) and the telescopic rods (3) can be in a synchronous rotating state in the vertical direction.

8. The abrasive grinding tool of claim 1, wherein: the annular limiting part (2) comprises a plurality of arc-shaped connecting pieces (202), the number of the arc-shaped connecting pieces (202) and the number of the limiting grooves (201) are correspondingly arranged, a gap is formed between every two adjacent arc-shaped connecting pieces (202), every two adjacent arc-shaped connecting pieces (202) are fixedly connected through a threaded rod (203), and when the threaded rod (203) rotates clockwise, the two arc-shaped connecting pieces (202) connected with the threaded rod (203) are in a moving state close to each other.