CN221539455U - Water grinding wheel - Google Patents

Abstract

The utility model provides a water mill grinding wheel, comprising: grinding wheel body, grinding wheel base and mounting. The grinding wheel base is fixedly connected with one end of the grinding wheel body along the axial direction of the grinding wheel body, and the surface of the end part of the grinding wheel body is contacted with the grinding wheel base; the fixing piece is provided with a fixing hole, the grinding wheel base is penetrated through the fixing hole, and the hole wall of the fixing hole abuts against the outer surface of the grinding wheel base; wherein, the central axis of emery wheel body, the central axis of emery wheel base, the central axis coincidence of mounting. The water-milling grinding wheel can improve the utilization rate of the grinding wheel body.

Description

Water grinding wheel

Technical Field

The utility model relates to the technical field of grinding wheels, in particular to a water-grinding wheel.

Background

The water grinding wheel is a grinding tool with high efficiency, high speed and wide application, can quickly remove impurities and scratches on the surface of a workpiece through high-speed grinding, improves the finish degree and precision of the workpiece, can quickly machine and grind a certain amount of metal thickness, achieves the required size of a product, and has wide application prospect in the fields of metal machining, surface treatment workpiece repair, die manufacturing and the like. The grinding wheel body of the water grinding wheel is softer and easy to burst, so that the traditional water grinding wheel needs to be provided with fixed reinforcing ribs on the surface of the grinding wheel body, and then the reinforcing ribs are sleeved with the grinding wheel fixed ring to clamp the reinforcing ribs, so that the grinding wheel body is prevented from being thrown off or welded to crack. When the grinding wheel is used for grinding, in order to avoid interference between a machined workpiece and a fixed ferrule and between the machined workpiece and a reinforcing rib, the utilization rate of the strong grinding wheel body is generally reduced.

Disclosure of utility model

In view of the above, the present utility model aims to overcome the defects in the prior art, and provide a water grinding wheel, which can improve the utilization rate of a grinding wheel body.

The utility model provides the following technical scheme:

According to an embodiment of the utility model, a watermill grinding wheel comprises: a grinding wheel body; the grinding wheel base is fixedly connected with one end of the grinding wheel body along the axial direction of the grinding wheel body, and the end surface of the grinding wheel body is contacted with the grinding wheel base; the fixing piece is provided with a fixing hole, the grinding wheel base penetrates through the fixing hole, and the hole wall of the fixing hole abuts against the outer surface of the grinding wheel base; the central axis of the grinding wheel body, the central axis of the grinding wheel base and the central axis of the fixing piece are coincident.

According to the watermill grinding wheel provided by the embodiment of the utility model, the grinding wheel base comprises the base main body and the connecting part, the connecting part is fixedly connected to the base main body, a connecting groove is formed in one axial end of the grinding wheel main body, the connecting part is arranged in the connecting groove in a penetrating manner, and the shape of the connecting part is consistent with that of the connecting groove.

According to the watermill grinding wheel provided by the embodiment of the utility model, the connecting part is provided with the first connecting surface, the second connecting surface and the third connecting surface, the second connecting surface is positioned at one end of the connecting part, which is far away from the base main body along the axial direction of the grinding wheel base, and the first connecting surface and the third connecting surface are respectively positioned at two sides of the second connecting surface along the circumferential direction of the base main body, and the first connecting surface, the second connecting surface and the third connecting surface are all propped against the groove wall of the connecting groove.

According to the watermill grinding wheel provided by the embodiment of the utility model, the first connecting surface and the third connecting surface are both arranged at an angle with the axial direction of the grinding wheel base, one end of the first connecting surface, which is close to the base main body, and one end of the third connecting surface, which is close to the base main body, are mutually close, and one end of the first connecting surface, which is far away from the base main body, and one end of the third connecting surface, which is far away from the base main body, are mutually far away.

According to the watermill grinding wheel provided by the embodiment of the utility model, the connecting groove is provided with the first groove wall, the second groove wall and the third groove wall, the second groove wall is arranged at one end of the connecting groove, which is far away from the base main body, along the axial direction of the grinding wheel body, and the first groove wall and the third groove wall are respectively arranged at two sides of the second groove wall along the circumferential direction of the grinding wheel body;

The first groove wall abuts against the first connecting surface, the second groove wall abuts against the second connecting surface, and the third groove wall abuts against the third connecting surface.

According to the watermill grinding wheel provided by the embodiment of the utility model, the first groove wall and the third groove wall are both arranged at an angle with the axial direction of the grinding wheel body, one end of the first groove wall, which is close to the base body, and one end of the third groove wall, which is close to the base body, are mutually close, and one end of the first groove wall, which is far away from the base body, and one end of the third groove wall, which is far away from the base body, are mutually far away.

According to the watermill grinding wheel provided by the embodiment of the utility model, a plurality of connecting parts are arranged on the base body at intervals along the circumferential direction of the base body, a plurality of connecting grooves are arranged at one end of the grinding wheel body along the axial direction of the grinding wheel body at intervals along the circumferential direction of the grinding wheel body, and each connecting part is arranged in one connecting groove in a penetrating way.

According to the watermill grinding wheel provided by the embodiment of the utility model, the hole wall of the fixing hole is provided with the fixing groove, the fixing groove is communicated with the fixing hole, the fixing groove extends along the circumferential direction of the fixing piece, the grinding wheel base further comprises the fixing part, the fixing part is fixed on the base body along the circumferential direction of the base body, the fixing part is propped against the wall of the fixing groove, and the hole wall of the fixing hole is propped against the base body.

According to the watermill grinding wheel provided by the embodiment of the utility model, the fixing part protrudes out of the base main body along the radial direction of the base main body, and the fixing groove is recessed in the hole wall of the fixing hole along the radial direction of the fixing piece.

According to the watermill grinding wheel provided by the embodiment of the utility model, the fixing piece is further provided with a plurality of connecting holes, the connecting holes are arranged at intervals along the circumferential direction of the fixing piece, and the central axis of each connecting hole is parallel to the central axis of the fixing hole.

Embodiments of the present utility model have the following advantages:

In the water mill grinding wheel, because the grinding wheel base is fixedly connected with one end of the grinding wheel body along the axial direction of the grinding wheel body, and the end surface of the grinding wheel body is in contact with the grinding wheel base, the grinding wheel body can be fixed in the circumferential direction through the grinding wheel base, burst of the grinding wheel body in the use process is avoided, the grinding wheel base is penetrated into the fixing hole of the fixing piece, the hole wall of the fixing hole abuts against the outer surface of the grinding wheel base, and therefore the circumferential direction of the grinding wheel base can be fixed through the fixing piece, burst of the grinding wheel base is avoided, the structural strength of the grinding wheel body is further improved, and in the process, when the fixing piece is used for fixing the grinding wheel body, the fixing piece is in contact with the grinding wheel base, and is not in direct contact with the grinding wheel body. Meanwhile, as the central axis of the grinding wheel body, the central axis of the grinding wheel base and the central axis of the fixing piece are coincident, when the water-grinding wheel is mounted on the grinding equipment, the coaxiality of the grinding wheel body and the rotating shaft of the grinding equipment can be ensured, and the grinding precision is improved.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic structural view of a watermill grinding wheel according to an embodiment of the utility model;

FIG. 2 shows a schematic diagram of an exploded construction of a watermill grinding wheel according to an embodiment of the utility model;

FIG. 3 shows a schematic cross-sectional view of a grinding wheel base and a fixture in accordance with an embodiment of the present utility model;

FIG. 4 shows an enlarged schematic view of the structure at A in FIG. 3;

FIG. 5 shows a schematic structural view of a grinding wheel body according to an embodiment of the utility model;

Fig. 6 shows an enlarged schematic view of the structure at B in fig. 5.

Description of main reference numerals:

100-grinding wheel body; 110-connecting grooves; 111-a first groove wall; 112-a second groove wall; 113-third groove wall;

200-a grinding wheel base; 210-a base body; 220-connecting part; 221-a first connection face; 222-a second connection face; 223-a third connection face; 230-a fixing part;

300-fixing piece; 310-fixing holes; 320-a fixed groove; 330-connection holes.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a watermill grinding wheel according to an embodiment of the present utility model includes: grinding wheel body 100, grinding wheel base 200, and fixture 300.

Specifically, the grinding wheel base 200 is fixedly connected with one end of the grinding wheel body 100 in the axial direction of the grinding wheel body 100, and the end surface of the grinding wheel body 100 is in contact with the grinding wheel base 200; the fixing piece 300 is provided with a fixing hole 310, the grinding wheel base 200 is penetrated through the fixing hole 310, and the hole wall of the fixing hole 310 abuts against the outer surface of the grinding wheel base 200; wherein, the central axis of the grinding wheel body 100, the central axis of the grinding wheel base 200 and the central axis of the fixing member 300 are coincident.

More specifically, in the above-described implementation, the wheel base 200 and the wheel body 100 are fixedly connected by casting.

Further, in the above embodiment, the fixing member 300 is a fixing collar.

In the above-mentioned water-grinding wheel, because the grinding wheel base 200 is fixedly connected with one end of the grinding wheel body 100 along the axial direction of the grinding wheel body 100, and the end surface of the grinding wheel body 100 is in contact with the grinding wheel base 200, the grinding wheel body 100 can be fixed in the circumferential direction by the grinding wheel base 200, burst of the grinding wheel body 100 in the use process is avoided, and because the grinding wheel base 200 is penetrated into the fixing hole 310 of the fixing piece 300, and the hole wall of the fixing hole 310 is abutted against the outer surface of the grinding wheel base 200, burst of the grinding wheel base 200 can be avoided by fixing the circumferential direction of the grinding wheel base 200 by the fixing piece 300, so that the structural strength of the grinding wheel body 100 is further improved, and in this process, when the fixing piece 300 fixes the grinding wheel body 100, the fixing piece 300 is in contact with the grinding wheel base 200 without directly contacting the grinding wheel body 100, and therefore, when the above-mentioned water-grinding wheel is used, interference between the fixing piece 300 and a processed workpiece can be avoided, and the utilization rate of the grinding wheel body 100 can also be improved. Meanwhile, since the central axis of the grinding wheel body 100, the central axis of the grinding wheel base 200 and the central axis of the fixing member 300 coincide, when the above-mentioned water-grinding wheel is mounted to the grinding apparatus, the coaxiality of the grinding wheel body and the rotating shaft of the grinding apparatus can be ensured, and the grinding accuracy can be improved.

Referring to fig. 1 and 2, the grinding wheel base 200 includes a base body 210 and a connecting portion 220, the connecting portion 220 is fixedly connected to the base body 210, a connecting groove 110 is formed at one axial end of the grinding wheel body 100, the connecting portion 220 is disposed in the connecting groove 110 in a penetrating manner, and the shape of the connecting portion 220 is consistent with that of the connecting groove 110.

It can be appreciated that, since the connecting portion 220 is fixedly connected to the base body 210, the connecting groove 110 is formed at one end of the grinding wheel body 100 along the axial direction thereof, and the connecting portion 220 is disposed in the connecting groove 110 in a penetrating manner, when the grinding wheel base 200 is connected to the grinding wheel body 100, the connecting portion 220 can be mounted in the connecting groove 110, so as to position the connection between the grinding wheel base 200 and the grinding wheel body 100, and meanwhile, since the shape of the connecting portion 220 is consistent with the shape of the connecting groove 110, when the connecting portion 220 is mounted in the connecting groove 110, the surface of the connecting portion 220 can be abutted against each groove wall of the connecting groove 110, thereby improving the connection stability of the grinding wheel base 200 and the grinding wheel body 100, and simultaneously improving the coaxiality of the grinding wheel base 200 and the grinding wheel body 100.

Referring to fig. 3 and 4, the connecting portion 220 has a first connecting surface 221, a second connecting surface 222, and a third connecting surface 223, the second connecting surface 222 is located at an end of the connecting portion 220 away from the base body 210 in the axial direction of the grinding wheel base 200, the first connecting surface 221 and the third connecting surface 223 are located at two sides of the second connecting surface 222 in the circumferential direction of the base body 210, and the first connecting surface 221, the second connecting surface 222, and the third connecting surface 223 are all abutted against the groove wall of the connecting groove 110.

It will be appreciated that, in the circumferential direction of the base body 210, since the first connection surface 221 and the third connection surface 223 are located on both sides of the second connection surface 222, respectively, and the first connection surface 221 and the third connection surface 223 are abutted against the groove wall of the connection groove 110, when the grinding wheel body 100 is connected to the grinding wheel base 200, the grinding wheel body 100 can be limited to rotate around the axial direction thereof by the first connection surface 221 and the second connection surface 222, so as to improve the connection stability of the grinding wheel body 100 and the grinding wheel base 200, and since the second connection surface 222 is located at one end of the connection part 220 far from the base body 210 in the axial direction of the grinding wheel base 200, and the second connection surface 222 is abutted against the groove wall of the connection groove 110, when the grinding wheel body 100 is connected to the grinding wheel base 200, the grinding wheel body 100 can be positioned in the axial direction by the second connection surface 222 being abutted against the groove wall of the connection groove 110, so as to determine whether the grinding wheel body 100 is connected to the grinding wheel base 200 in place.

Referring to fig. 4, the first connecting surface 221 and the third connecting surface 223 are both disposed at an angle to the axial direction of the grinding wheel base 200, and an end of the first connecting surface 221 near the base body 210 and an end of the third connecting surface 223 near the base body 210 are close to each other, and an end of the first connecting surface 221 far from the base body 210 and an end of the third connecting surface 223 far from the base body 210 are far from each other.

It can be appreciated that, since the end of the first connecting surface 221 near the base body 210 and the end of the third connecting surface 223 near the base body 210 are close to each other, the end of the first connecting surface 221 far from the base body 210 and the end of the third connecting surface 223 far from the base body 210 are far away from each other, so that the distance between the first connecting surface 221 and the third connecting surface 223 gradually increases along the axial direction of the base body 210 in the direction far from the base body 210, when the connecting portion 220 is inserted into the connecting groove 110, the first connecting surface 221 and the third connecting surface 223 can avoid the connecting portion 220 from being separated from the connecting groove 110 along the axial direction of the grinding wheel body 100, thereby improving the connection stability of the connecting portion 220 and the connecting groove 110, and further improving the connection stability of the grinding wheel base 200 and the grinding wheel body 100.

Referring to fig. 5 and 6, the connecting groove 110 has a first groove wall 111, a second groove wall 112, and a third groove wall 113, the second groove wall 112 being provided at an end of the connecting groove 110 remote from the base body 210 in the axial direction of the grinding wheel body 100, the first groove wall 111 and the third groove wall 113 being provided on both sides of the second groove wall 112, respectively, in the circumferential direction of the grinding wheel body 100;

The first groove wall 111 abuts against the first connecting surface 221, the second groove wall 112 abuts against the second connecting surface 222, and the third groove wall 113 abuts against the third connecting surface 223.

It will be appreciated that, in the circumferential direction of the grinding wheel body 100, since the first groove wall 111 and the third groove wall 113 are respectively disposed at two sides of the second groove wall 112, and the first groove wall 111 abuts against the first connecting surface 221, and the third groove wall 113 abuts against the third connecting surface 223, when the grinding wheel body 100 is connected with the grinding wheel base 200, the grinding wheel body 100 can be limited to rotate around the axial direction thereof by abutting against the first connecting surface 221 and the first groove wall 111, and abutting against the second connecting surface 222 and the second groove wall 112, so as to improve the connection stability of the grinding wheel body 100 and the grinding wheel base 200, and since the second groove wall 112 is disposed at one end of the connecting groove 110 far from the base body 210 in the axial direction of the grinding wheel body 100, and the second groove wall 112 abuts against the second connecting surface 222, when the grinding wheel body 100 and the grinding wheel base 200 are connected, the grinding wheel body 100 can be positioned in the axial direction by abutting against the second connecting surface 222 and the second groove wall 112, so as to determine whether the grinding wheel body 100 and the grinding wheel base 200 are connected in place.

Referring to fig. 6, the first groove wall 111 and the third groove wall 113 are disposed at an angle to the axial direction of the grinding wheel body 100, and an end of the first groove wall 111 close to the base body 210 and an end of the third groove wall 113 close to the base body 210 are close to each other, and an end of the first groove wall 111 away from the base body 210 and an end of the third groove wall 113 away from the base body 210 are away from each other.

It can be appreciated that, since the end of the first groove wall 111 near the base body 210 and the end of the third groove wall 113 near the base body 210 are close to each other, the end of the first groove wall 111 far from the base body 210 and the end of the third groove wall 113 far from the base body 210 are far from each other, so that the distance between the first groove wall 111 and the third groove wall 113 gradually decreases along the axial direction of the grinding wheel body 100 towards the direction near the base body 210, when the connecting portion 220 is inserted into the connecting groove 110, the first groove wall 111 and the third groove wall 113 can avoid the connecting portion 220 from separating from the connecting groove 110 along the axial direction of the grinding wheel body 100, thereby improving the connection stability of the connecting portion 220 and the connecting groove 110, and improving the connection stability of the grinding wheel base 200 and the grinding wheel body 100.

Referring to fig. 2 and 5, there are a plurality of connection portions 220, a plurality of connection portions 220 are disposed on the base body 210 at intervals along the circumferential direction of the base body 210, a plurality of connection grooves 110 are disposed on one end of the grinding wheel body 100 along the axial direction thereof at intervals along the circumferential direction of the grinding wheel body 100, and each connection portion 220 is disposed in one connection groove 110 in a penetrating manner.

It can be appreciated that, since the connecting portions 220 and the connecting grooves 110 are plural, and the plurality of connecting portions 220 are disposed on the base body 210 along the circumferential direction of the base body 210, the plurality of connecting grooves 110 are disposed at one end of the grinding wheel body 100 along the axial direction thereof along the circumferential direction of the grinding wheel body 100, and each connecting portion 220 is disposed in one connecting groove 110 in a penetrating manner, when the grinding wheel body 100 is connected with the grinding wheel base 200, the connection stability between the grinding wheel base 200 and the grinding wheel body 100 can be improved through the plurality of connecting portions 220 and the plurality of connecting grooves 110, and meanwhile, the movement of the grinding wheel body 100 along the radial direction thereof can be further limited, and when the grinding wheel body 100 is fixedly cast with the grinding wheel base 200, the coaxiality between the grinding wheel body 100 and the grinding wheel base 200 can be ensured.

Referring to fig. 4, a fixing groove 320 is formed on a wall of the fixing hole 310, the fixing groove 320 is communicated with the fixing hole 310, the fixing groove 320 extends along a circumferential direction of the fixing member 300, the grinding wheel base 200 further includes a fixing portion 230, the fixing portion 230 is fixed on the base body 210 along the circumferential direction of the base body 210, the fixing portion 230 abuts against a wall of the fixing groove 320, and a wall of the fixing hole 310 abuts against the base body 210.

It can be appreciated that, since the fixing groove 320 extends along the circumferential direction of the fixing member 300, and the fixing portion 230 is fixed on the base body 210 along the circumferential direction of the base body 210, the fixing portion 230 abuts against the groove wall of the fixing groove 320, and the hole wall of the fixing hole 310 abuts against the base body 210, the friction force between the grinding wheel base 200 and the limiting member can be increased by abutting the fixing portion 230 against the groove wall of the fixing groove 320, so as to improve the connection stability between the grinding wheel base 200 and the limiting member.

With continued reference to fig. 4, the fixing portion 230 protrudes from the base body 210 in the radial direction of the base body 210, and the fixing groove 320 is recessed in the wall of the fixing hole 310 in the radial direction of the fixing member 300.

It can be appreciated that, since the fixing portion 230 protrudes from the base body 210 along the radial direction of the base body 210, and the fixing groove 320 is recessed from the hole wall of the fixing hole 310 along the radial direction of the fixing member 300, the connection portion between the fixing member 300 and the grinding wheel base 200 can form a step surface, so that the connection portion between the grinding wheel base 200 and the fixing member 300 can be clamped on the fixing member 300, thereby improving the connection stability between the grinding wheel base 200 and the fixing member 300, and simultaneously, positioning the connection between the grinding wheel base 200 and the fixing member 300, so as to improve the coaxiality between the grinding wheel base 200 and the fixing member 300.

Referring to fig. 2 and 4, the fixing member 300 is further provided with a plurality of connection holes 330, the plurality of connection holes 330 are spaced apart along the circumferential direction of the fixing member 300, and the central axis of each connection hole 330 is disposed in parallel with the central axis of the fixing hole 310.

It will be appreciated that the fixing member 300 is used to connect the above-mentioned terraced grinding wheel with the rotating shaft of the grinding apparatus, since the fixing member 300 is further provided with a plurality of connection holes 330, the plurality of connection holes 330 are disposed at intervals along the circumference of the fixing member 300, and thus, the fixing member 300 can be connected to the rotating shaft of the grinding apparatus by penetrating the plurality of connection holes 330 through fasteners (not shown), thereby connecting the terraced grinding wheel with the rotating shaft of the grinding apparatus, and in this process, since the central axis of each connection hole 330 is disposed in parallel with the central axis of the fixing hole 310, when the fixing member 300 is connected to the rotating shaft of the grinding apparatus, the coaxiality of the fixing member 300 with the rotating shaft of the grinding apparatus can be ensured, thereby ensuring the coaxiality of the above-mentioned terraced grinding wheel with the rotating shaft of the grinding apparatus, thereby improving the grinding accuracy.

Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The above examples merely represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.

Claims (10)

1. A watermill grinding wheel, characterized by comprising:

a grinding wheel body;

The grinding wheel base is fixedly connected with one end of the grinding wheel body along the axial direction of the grinding wheel body, and the end surface of the grinding wheel body is contacted with the grinding wheel base;

The fixing piece is provided with a fixing hole, the grinding wheel base penetrates through the fixing hole, and the hole wall of the fixing hole abuts against the outer surface of the grinding wheel base;

the central axis of the grinding wheel body, the central axis of the grinding wheel base and the central axis of the fixing piece are coincident.

2. The terraced grinding wheel of claim 1, wherein the grinding wheel base comprises a base body and a connecting portion, the connecting portion is fixedly connected to the base body, a connecting groove is formed in one axial end of the grinding wheel body, the connecting portion is arranged in the connecting groove in a penetrating mode, and the shape of the connecting portion is consistent with that of the connecting groove.

3. The watermill grinding wheel according to claim 2, wherein the connecting part has a first connecting surface, a second connecting surface and a third connecting surface, the second connecting surface is located at an end of the connecting part away from the base body in an axial direction of the grinding wheel base, the first connecting surface and the third connecting surface are located at both sides of the second connecting surface in a circumferential direction of the base body, respectively, and the first connecting surface, the second connecting surface and the third connecting surface are all abutted against a groove wall of the connecting groove.

4. A watermill grinding wheel according to claim 3, wherein the first connecting surface and the third connecting surface are both arranged at an angle to the axial direction of the grinding wheel base, and the end of the first connecting surface close to the base body and the end of the third connecting surface close to the base body are close to each other, and the end of the first connecting surface far away from the base body and the end of the third connecting surface far away from the base body are far away from each other.

5. A watermill grinding wheel according to claim 3, characterized in that the connecting groove has a first groove wall, a second groove wall and a third groove wall, the second groove wall being provided at an end of the connecting groove in the axial direction of the grinding wheel body remote from the base body, the first groove wall and the third groove wall being provided on both sides of the second groove wall, respectively, in the circumferential direction of the grinding wheel body;

The first groove wall abuts against the first connecting surface, the second groove wall abuts against the second connecting surface, and the third groove wall abuts against the third connecting surface.

6. The watermill grinding wheel of claim 5, wherein the first groove wall and the third groove wall are both arranged at an angle to the axial direction of the grinding wheel body, and an end of the first groove wall close to the base body and an end of the third groove wall close to the base body are close to each other, and an end of the first groove wall far away from the base body and an end of the third groove wall far away from the base body are far away from each other.

7. The terraced grinding wheel of any one of claims 2-6, wherein there are a plurality of said connection portions, a plurality of said connection portions are provided on said base body at intervals along the circumferential direction of said base body, a plurality of said connection grooves are provided at intervals along the circumferential direction of said grinding wheel body at one end of said grinding wheel body in the axial direction thereof, and each of said connection portions is provided in one of said connection grooves.

8. The terrazzo grinding wheel of any of claims 2-6, wherein a fixing groove is formed in the wall of the fixing hole, the fixing groove is communicated with the fixing hole, the fixing groove extends along the circumferential direction of the fixing piece, the grinding wheel base further comprises a fixing portion, the fixing portion is fixed on the base body along the circumferential direction of the base body, the fixing portion abuts against the wall of the fixing groove, and the wall of the fixing hole abuts against the base body.

9. The watermill grinding wheel according to claim 8, wherein the fixing part protrudes from the base body in a radial direction of the base body, and the fixing groove is recessed in a wall of the fixing hole in the radial direction of the fixing piece.

10. The watermill grinding wheel according to any one of claims 1 to 6, wherein the fixing member is further provided with a plurality of connection holes, a plurality of the connection holes are arranged at intervals along the circumferential direction of the fixing member, and a central axis of each of the connection holes is arranged in parallel with a central axis of the fixing hole.