CN220094234U - Clamping structure and milling device - Google Patents

Abstract

The utility model provides a clamping structure and a milling device, wherein the clamping structure comprises a clamping assembly, the clamping assembly comprises a clamping structure body, the clamping structure body is provided with a processing surface, a plurality of fixing cavities are arranged on the processing surface at intervals, the centers of the fixing cavities are positioned on the same circle, the centers of the fixing cavities define a first spherical surface, the processing surface defines a second spherical surface, the radius of the first spherical surface is smaller than that of the second spherical surface, and the spherical center of the first spherical surface is overlapped with the spherical center of the second spherical surface. The clamping structure can improve the processing efficiency of products.

Description

Clamping structure and milling device

Technical Field

The utility model relates to the technical field of processing equipment, in particular to a clamping structure and a milling device.

Background

The high-end intelligent wearing watch rear cover industry generally uses sapphire or ceramic material, because sapphire or ceramic material is very hard, usually process the product through milling and grinding machine and cavity emery wheel, when processing, the product is vertical to be placed in cambered surface base die cavity, the outer wall of emery wheel aligns with the product central point, emery wheel and product rotate towards opposite direction, through the required product sphere of adjustment product and sand wheel contained angle value processing, this kind of processing method can only process a product once, then can't accomplish the required sphere of product processing when a plurality of products are processed simultaneously, thereby lead to the process time of this product to be long, machining efficiency is low.

Disclosure of Invention

Therefore, the utility model aims to overcome the defects in the prior art, and provides a clamping structure which can improve the processing efficiency of products.

The utility model provides the following technical scheme:

according to an embodiment of the first aspect of the present utility model, a clamping structure includes: the clamping assembly comprises a clamping structure body, the clamping structure body is provided with a processing surface, a plurality of fixing cavities are arranged on the processing surface at intervals, the centers of the fixing cavities are all located on the same circle, the centers of the fixing cavities define a first spherical surface, the processing surface defines a second spherical surface, the radius of the first spherical surface is smaller than that of the second spherical surface, and the spherical center of the first spherical surface coincides with that of the second spherical surface.

Embodiments of the present utility model have the following advantages:

in the clamping structure, the product to be processed is fixed in the fixing cavity, and a plurality of fixing cavities are arranged on the processing surface at intervals, so that a plurality of products to be processed can be fixed on the processing surface at the same time. When a plurality of products to be processed are fixed on the processing surface, as the radius of the first spherical surface defined by the centers of the plurality of fixing cavities is smaller than the radius of the second spherical surface defined by the processing surface, and the spherical centers of the first spherical surface defined by the centers of the plurality of fixing cavities are coincident with the spherical centers of the second spherical surface defined by the processing surface, the distances from the center of each fixing cavity to the second spherical surface are equal, and therefore, when the products to be processed are processed and molded, the products to be processed fixed in each fixing cavity can be guaranteed to have the same processing amount, so that the products to be processed can be processed simultaneously, the aim of processing the products to be processed simultaneously is fulfilled, and the processing efficiency of the products is improved. Meanwhile, after the products to be processed are processed, the sphere center of the sphere defined by the highest point of the products to be processed can be guaranteed to be coincident with the sphere centers of the first sphere and the second sphere, and the radius of the sphere defined by the highest point of the products to be processed is larger than that of the first sphere and that of the second sphere, so that the clamping structure can be guaranteed not to interfere with the processing device in the processing process of the products to be processed.

According to the clamping structure provided by the embodiment of the utility model, the clamping structure body comprises a plurality of first clamping pieces, and any two adjacent first clamping pieces divide each fixing cavity into two parts.

According to the clamping structure provided by the embodiment of the utility model, the clamping structure body further comprises a fixing structure, and the fixing structure is positioned between any two adjacent first clamping pieces.

According to the clamping structure provided by the embodiment of the utility model, the clamping structure further comprises the first driving assembly, the first driving assembly is in driving connection with the clamping assembly, the first driving assembly drives the clamping assembly to move along the first direction, and the first driving assembly drives the clamping assembly to rotate around the first direction.

According to the clamping structure provided by the embodiment of the utility model, the fixing structure is a telescopic groove, any fixing cavity is divided into two parts to define the telescopic groove, and the groove width of the telescopic groove is reduced or increased under the action of the first driving component in the first direction.

According to the clamping structure provided by the embodiment of the utility model, the first driving assembly comprises the first rotating shaft, the first rotating shaft extends along the first direction, the clamping assembly further comprises the connecting piece, one end of the connecting piece is connected with the first rotating shaft, the other end of the connecting piece is connected with the plurality of first clamping pieces, and the plurality of first clamping pieces are arranged at intervals along the circumference of the connecting piece.

According to the clamping structure provided by the embodiment of the utility model, the clamping structure body further comprises the second clamping piece, the second clamping piece is sleeved on the first rotating shaft, the second clamping piece is provided with the accommodating space, the connecting piece penetrates through the accommodating space along the first direction, and the length of the accommodating space along the first direction is larger than the length of the connecting piece along the first direction.

An embodiment of the milling device according to the second aspect of the present utility model comprises: the clamping structure is as described above; the milling grinding wheel is arranged towards the processing surface, each fixing cavity is provided with an opening, and the diameter of the outermost edge of the milling grinding wheel is larger than or equal to the caliber of each opening.

In the milling grinding wheel, when a plurality of products to be processed are fixed on the processing surface, the milling grinding wheel can mill and grind the products to be processed simultaneously, so that the aim of milling a plurality of products to be processed simultaneously is fulfilled, and the milling efficiency of the milling grinding device on the products is improved. Simultaneously, the diameter of the outermost edge of the milling grinding wheel is larger than or equal to the caliber of each opening, so that when the milling grinding wheel mills a product to be processed, the outer surface of the product to be processed can be contacted with the milling grinding wheel, and the surface of the product to be processed can not be in an unprocessed area, namely, the surface of the product to be processed is prevented from being sharp.

According to the milling device provided by the embodiment of the utility model, the milling grinding wheel is provided with the grinding wheel layer, the grinding wheel layer is arranged at one end of the milling grinding wheel close to the processing surface, and the inner diameter of the grinding wheel layer gradually decreases from one end close to the processing surface to one end far away from the processing surface.

According to the milling device provided by the embodiment of the utility model, the milling grinding wheel further comprises a second driving assembly, the second driving assembly is in driving connection with the grinding wheel layer, the second driving assembly drives the grinding wheel layer to rotate around a second direction, the second driving assembly drives the grinding wheel layer to move along a third direction, and the second driving assembly drives the grinding wheel layer to swing along a direction close to or far away from the rotation axis of the clamping structure;

the second direction and the first direction are arranged at an angle, and the third direction is perpendicular to the first direction.

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 cross-sectional view of a milling device according to an embodiment of the present utility model;

FIG. 2 shows a schematic cross-sectional view of a clamping structure according to an embodiment of the present utility model;

FIG. 3 shows a schematic structural view of a first sphere, a second sphere, and a third sphere according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a front view of a clamping structure according to an embodiment of the present utility model;

fig. 5 shows a schematic cross-sectional view of a milling wheel according to an embodiment of the utility model.

Description of main reference numerals:

100-clamping structure; 110-a clamping assembly; 111-clamping the structural body; 1111-a working surface; 1112-a fixation cavity; 1113—a first clamping member; 1114-fixed structure; 112-a connector; 1115-a second clamping member; 1115 a-accommodation space; 120-a first drive assembly; 121-a first rotation axis;

200-a first sphere; 300-a second sphere; 400-a third sphere;

500-milling and grinding the grinding wheel; 510-a grinding wheel layer; 520-a second drive assembly.

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, 3 and 4, a clamping structure 100 according to an embodiment of the present utility model includes a clamping assembly 110.

Specifically, the clamping assembly 110 includes a clamping structure body 111, the clamping structure body 111 has a machining surface 1111, a plurality of fixing cavities 1112 are spaced apart on the machining surface 1111, the center of each fixing cavity 1112 is located on the same circle, the centers of the plurality of fixing cavities 1112 define a first spherical surface 200, the machining surface 1111 defines a second spherical surface 300, the radius of the first spherical surface 200 is equal to the radius of the second spherical surface 300, and the spherical center of the first spherical surface 200 coincides with the spherical center of the second spherical surface 300.

More specifically, the sphere defined by the highest point of the plurality of finished products is the third sphere 400.

Further, in the above-described embodiment, the number of the fixing chambers is between 3 and 8.

In the above-described clamping structure 100, the product to be processed is fixed in the fixing chamber 1112, and since the processing surface 1111 is provided with a plurality of fixing chambers 1112 at intervals, a plurality of products to be processed can be simultaneously fixed on the processing surface 1111. When a plurality of products to be processed are fixed on the processing surface 1111, since the radius of the first spherical surface 200 defined by the center of the plurality of fixing cavities 1112 is smaller than the radius of the second spherical surface 300 defined by the processing surface 1111, and the spherical center of the first spherical surface 200 defined by the center of the plurality of fixing cavities 1112 coincides with the spherical center of the second spherical surface 300 defined by the processing surface 1111, the distance from the center of each fixing cavity 1112 to the second spherical surface 300 can be equal, so that when the products to be processed are processed and molded, the same processing amount of the products to be processed fixed in each fixing cavity 1112 can be ensured, so that the plurality of products to be processed can be processed simultaneously, thereby achieving the purpose of processing a plurality of products to be processed simultaneously, and improving the processing efficiency of the products. Meanwhile, after the plurality of products to be processed are processed, the third spherical surface 400 can be ensured to be coincident with the spherical centers of the first spherical surface 200 and the second spherical surface 300, and the radius of the third spherical surface 400 is larger than the radius of the first spherical surface 200 and the radius of the second spherical surface 300, so that the clamping structure 100 can be ensured not to interfere with a processing device in the processing process of the products to be processed.

Referring to fig. 2, the clamping structure body 111 includes a plurality of first clamping members 1113, and any two adjacent first clamping members 1113 divide each of the fixing cavities 1112 into two parts.

It will be appreciated that when a product to be processed is placed in the holding chambers 1112, since any two adjacent first clamping members 1113 divide each holding chamber 1112 into two parts, the product to be processed in the holding chamber 1112 can be clamped by any two adjacent first clamping members 1113.

Referring to fig. 2 and 4, the clamping structure body 111 further includes a fixing structure 1114, and the fixing structure 1114 is located between any two adjacent first clamping members 1113.

It will be appreciated that since the securing structure 1114 is located between any two adjacent first clamping members 1113, a securing structure 1114 is disposed within any one of the securing cavities 1112 such that when a product to be processed is secured within the securing cavity 1112, the product to be processed within the securing cavity 1112 can be clamped by the securing structure between any two adjacent first clamping members 1113.

With continued reference to fig. 2 and 4, the clamping structure 100 further includes a first driving component 120, where the first driving component 120 is in driving connection with the clamping component 110, and the first driving component 120 drives the clamping component 110 to move along a first direction, and the first driving component 120 drives the clamping component 110 to rotate around the first direction.

It should be noted that, in the above embodiment, the first direction is the direction indicated by x in fig. 1.

Specifically, in the above-described embodiment, the first driving member 120 includes a first driving member (not shown) that drives the clamping assembly 110 to rotate about the first direction, and a second driving member (not shown) that drives the clamping assembly 110 to move in the first direction.

More specifically, in the above embodiment, the first driving member is a driving motor that drives the clamping assembly 110 to rotate around the first direction, and the second driving member is a driving cylinder that drives the clamping assembly 110 to move along the first direction.

It will be appreciated that the first driving component 120 can drive the clamping component 110 to move along the first direction, so that the clamping component 110 can clamp and fix the product to be processed placed in the fixing cavity 1112, and at the same time, the first driving component 120 can drive the clamping component 110 to rotate around the first direction, so that the clamping component 110 can drive the product to be processed fixed in the fixing cavity 1112 to rotate around the first direction, thereby realizing processing of the product to be processed.

With continued reference to fig. 2 and 4, the securing structure 1114 is a telescoping slot and any securing cavity 1112 is split into two portions to define a telescoping slot having a slot width that decreases or increases in a first direction under the influence of the first drive assembly 120.

It will be appreciated that the expansion slot is located between any two adjacent first clamping members 1113, and that when the first driving member 120 moves in a first direction along the driving clamping member 110, the first driving member 120 is capable of driving the plurality of first clamping members 1113 to move in the first direction such that the expansion slot between any two adjacent first clamping members 1113 is capable of decreasing or increasing, and that when the first driving member drives the first clamping members 1113 to move in the first direction away from the working surface 1111, the expansion slot is decreased, and that when the first driving member drives the first clamping members 1113 to move in the first direction toward the working surface 1111, the expansion slot is increased. When a product to be processed needs to be processed, the first clamping member 1113 is driven to move along the first direction towards the direction away from the processing surface 1111 by the first driving member, so that the telescopic groove is reduced, two divided parts of the fixing cavity 1112 are mutually close, a product to be processed placed in the fixing cavity 1112 can be abutted against the cavity wall of the fixing cavity 1112, clamping and fixing of the product to be processed are achieved, when the product to be processed needs to be removed from the clamping structure 100, the first clamping member 1113 is driven to move along the first direction towards the direction close to the processing surface 1111 by the first driving member, so that the telescopic groove is increased, the two divided parts of the fixing cavity 1112 are mutually away, and the product to be processed placed in the fixing cavity 1112 can be separated from the cavity wall of the fixing cavity 1112, so that the product to be processed can be removed from the clamping structure 100.

With continued reference to fig. 2 and 4, the first driving assembly 120 includes a first rotation shaft 121, the first rotation shaft 121 extends along a first direction, the clamping assembly 110 further includes a connection member 112, one end of the connection member 112 is connected to the first rotation shaft 121, the other end of the connection member 112 is connected to a plurality of first clamping members 1113, and the plurality of first clamping members 1113 are disposed at intervals along a circumferential direction of the connection member 112.

It will be appreciated that since one end of the connection member 112 is connected to the first rotation shaft 121 and the other end of the connection member 112 is connected to the plurality of first clamping members 1113, the first rotation shaft 121 can drive the plurality of first clamping members 1113 to rotate about the first direction, thereby driving the product to be processed fixed in the fixing chamber 1112 to rotate about the first direction to perform processing of the product to be processed. Meanwhile, the first rotating shaft 121 can also drive the plurality of first clamping members 1113 to move along the first direction, because the plurality of first clamping members 1113 are arranged at intervals along the circumferential direction of the connecting member 112, when the first rotating shaft 121 drives the plurality of first clamping members 1113 to move along the first direction in the direction away from the processing surface 1111, the plurality of first clamping members 1113 can enable two divided parts of any fixed cavity 1112 to be mutually close, a product to be processed placed in the fixed cavity 1112 can be abutted against the cavity wall of the fixed cavity 1112, and therefore clamping and fixing of the product to be processed can be achieved, and when the first rotating shaft 121 drives the plurality of first clamping members 1113 to move along the first direction towards the direction close to the processing surface 1111, the plurality of first clamping members 1113 can enable the divided parts of any fixed cavity 1112 to be mutually away, and then the product to be processed placed in the fixed cavity 1112 can be separated from the cavity wall of the fixed cavity 1112, and the finished product can be clamped and removed from the structure 100.

With continued reference to fig. 2 and fig. 4, the clamping structure body 111 further includes a second clamping member 1115, the second clamping member 1115 is sleeved on the first rotating shaft 121, the second clamping member 1115 is provided with an accommodating space 1115a, the connecting member 112 is penetrated in the accommodating space 1115a along the first direction, and the length of the accommodating space 1115a along the first direction is greater than the length of the connecting member 112 along the first direction.

In this way, when the first rotating shaft 121 drives the connecting piece 112 to move along the first direction towards the direction far away from the processing surface 1111, the connecting piece 112 can move towards the direction far away from the accommodating space 1115a, at this time, since the length of the accommodating space 1115a along the first direction is greater than the length of the connecting piece 112 along the first direction, the second clamping piece 1115 can abut against the first clamping pieces 1113 connected to the connecting piece 112, so that the second clamping pieces 1115 push the first clamping pieces 1113 to approach each other, so that any two divided parts of the fixed cavity 1112 approach each other, a product to be processed placed in the fixed cavity 1112 can abut against the cavity wall of the fixed cavity 1112, so that clamping fixation of the product to be processed is realized, when the first rotating shaft 121 drives the connecting piece 112 to move along the direction near the processing surface 1111, the connecting piece 112 can move towards the direction far away from the accommodating space 1115a, at this time, the second clamping piece 1115 does not abut against the first clamping pieces 1113 connected to the connecting piece 112, so that the first clamping pieces 1113 push the first clamping pieces 1113 to push the two divided parts to each other, so that any two divided parts of the product to be processed 1112 can be separated from each other, and the two divided parts of the cavity 1112 can be placed away from each other, and the cavity 100 can be fixed, thus the two divided into two parts can be separated from each other, and fixed, and the cavity can be clamped and fixed.

Specifically, in other embodiments, the fixing structure 1114 may be a suction channel, and suction channels are disposed in any fixing cavity 1112, so that the product to be processed placed in the fixing cavity 1112 can be adsorbed in the fixing cavity 1112 by vacuum adsorption in the suction channels, thereby fixing the product to be processed.

Referring to fig. 1, a milling device according to an embodiment of the present utility model includes: the clamping structure 100 and the milling wheel 500 are described above.

Specifically, the milling wheel 500 is disposed toward the working surface 1111, each of the fixing chambers 1112 has an opening, and the outermost edge diameter of the milling wheel 500 is greater than or equal to the caliber of each opening.

In the milling grinding wheel 500, when a plurality of products to be processed are fixed on the processing surface 1111, the milling grinding wheel 500 can mill the products to be processed simultaneously, thereby achieving the purpose of milling the products to be processed simultaneously, and improving the milling efficiency of the milling grinding device. Meanwhile, the diameter of the outermost edge of the milling grinding wheel 500 is greater than or equal to the caliber of each opening, so that when the milling grinding wheel 500 mills a product to be processed, the outer surface of the product to be processed can be in contact with the milling grinding wheel 500, and the surface of the product to be processed can be prevented from being in a non-processed area, namely, sharp points are prevented from being formed on the surface of the product to be processed.

Referring to fig. 1 and 5, the grinding wheel 500 has a wheel layer 510, and the wheel layer 510 is provided at an end of the grinding wheel 500 near the machining surface 1111, and the inner diameter of the wheel layer 510 gradually decreases from the end near the machining surface 1111 to the end far from the machining surface 1111.

It will be appreciated that the grinding wheel layer 510 is used to mill a product to be processed, and when the grinding wheel layer 510 is used to mill a product to be processed, the inner surface of the grinding wheel layer 510 is in contact with the product to be processed. Since the inner diameter of the grinding wheel layer 510 gradually decreases from the end near the processing surface 1111 to the end far from the processing surface 1111, when the grinding wheel layer 510 mills a product to be processed, the inner surface of the grinding wheel layer 510 can be adapted to the shape of the product so that the shape of the product milled by the grinding wheel layer 510 is a preset shape, i.e., the outer surface of the product milled by the grinding wheel layer 510 can be a spherical surface.

Referring to fig. 1 and 4, the milling grinding wheel 500 further includes a second driving assembly 520, the second driving assembly 520 is in driving connection with the grinding wheel layer 510, the second driving assembly 520 drives the grinding wheel layer 510 to rotate around the second direction, the second driving assembly 520 drives the grinding wheel layer 510 to move along the third direction, and the second driving assembly 520 drives the grinding wheel layer 510 to swing along a direction approaching to or separating from the rotation axis of the clamping structure 100; the second direction and the first direction are arranged at an angle, and the third direction is perpendicular to the first direction.

The second direction is the direction indicated by y in fig. 1, and the third direction is the direction indicated by z in fig. 4.

Specifically, when the second driving assembly 520 drives the grinding wheel layer 510 to rotate around the second direction, the rotational speed of the grinding wheel layer 510 is greater than the rotational speed of the clamping assembly 110.

It will be appreciated that when the second driving assembly 520 drives the grinding wheel layer 510 to rotate around the second direction, the grinding wheel layer 510 can relatively move with the product to be processed, so that the grinding wheel layer 510 can mill the product to be processed. Meanwhile, before the milling device performs milling, the second driving piece can drive the grinding wheel layer 510 to move along the third direction, and can also drive the grinding wheel layer 510 to swing along the direction close to or far away from the rotation axis of the clamping structure 100, so as to adjust the position relationship between the grinding wheel layer 510 and the surface of the product to be processed. The second driving piece drives the grinding wheel layer 510 to move along the third direction, so that one end of the grinding wheel layer 510, which is close to the rotation axis of the clamping structure 100, can be positioned on the same line with the rotation axis of the clamping structure 100 along the first direction, and the grinding wheel layer 510 can cover the surface of any product to be processed, so that the aim of milling a plurality of products to be processed simultaneously is fulfilled. When one end of the grinding wheel layer 510, which is close to the rotation axis of the clamping structure 100, is located on the same line as the rotation axis of the clamping structure 100 in the first direction, the second driving assembly 520 drives the grinding wheel layer 510 to swing in a direction close to or away from the rotation axis of the clamping structure 100, so that the angle relation between the rotation axis of the grinding wheel layer 510 and the rotation axis of the clamping structure 100 is adjusted, and thus the radius of the surface of the finished product is adjusted, when the angle between the rotation axis of the grinding wheel layer 510 and the rotation axis of the clamping structure 100 is smaller, the radius of the surface of the finished product is smaller, and when the angle between the rotation axis of the grinding wheel layer 510 and the rotation axis of the clamping structure 100 is larger, the radius of the surface of the finished product is larger.

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 clamping structure (100), comprising:

clamping assembly (110), clamping assembly (110) includes clamping structure body (111), clamping structure body (111) have machining surface (1111), the interval is equipped with a plurality of fixed chamber (1112) on machining surface (1111), every the center in fixed chamber (1112) all is located same circle, and a plurality of the center in fixed chamber (1112) defines first sphere, machining surface (1111) defines the second sphere, the radius of first sphere is less than the radius of second sphere, just the centre of sphere of first sphere with the centre of sphere coincidence of second sphere.

2. The clamping structure (100) of claim 1, wherein the clamping structure body (111) comprises a plurality of first clamping members (1113), any two adjacent first clamping members (1113) dividing each of the stationary cavities (1112) into two parts.

3. The clamping structure (100) of claim 2, wherein the clamping structure body (111) further comprises a securing structure (1114), the securing structure (1114) being located between any two adjacent first clamping members (1113).

4. A clamping structure (100) according to claim 3, wherein the clamping structure (100) further comprises a first driving assembly (120), the first driving assembly (120) is in driving connection with the clamping assembly (110), and the first driving assembly (120) drives the clamping assembly (110) to move in a first direction, and the first driving assembly (120) drives the clamping assembly (110) to rotate around the first direction.

5. The clamping structure (100) of claim 4, wherein the securing structure (1114) is a telescoping slot, and any of the securing cavities (1112) is split into two portions to define the telescoping slot, the telescoping slot having a slot width that decreases or increases in the first direction under the influence of the first drive assembly (120).

6. The clamping structure (100) of claim 4, wherein the first driving assembly (120) includes a first rotation shaft (121), the first rotation shaft (121) extends along the first direction, the clamping assembly (110) further includes a connecting member (112), one end of the connecting member (112) is connected to the first rotation shaft (121), the other end of the connecting member (112) is connected to a plurality of first clamping members (1113), and the plurality of first clamping members (1113) are disposed at intervals along a circumference of the connecting member (112).

7. The clamping structure (100) according to claim 6, wherein the clamping structure body (111) further comprises a second clamping member (1115), the second clamping member (1115) is sleeved on the first rotating shaft (121), the second clamping member (1115) is provided with an accommodating space (1115 a), the connecting member (112) is arranged in the accommodating space (1115 a) in a penetrating manner along the first direction, and the length of the accommodating space (1115 a) along the first direction is greater than the length of the connecting member (112) along the first direction.

8. A milling apparatus, comprising:

the clamping structure (100) of any of the above claims 1-7;

milling grinding wheel (200), milling grinding wheel (200) set up towards machining surface (1111), and every fixed chamber (1112) all has the opening, milling grinding wheel (200) outside edge diameter is greater than or equal to every the bore of opening.

9. The milling device according to claim 8, characterized in that the milling wheel (200) has a wheel layer (210), which wheel layer (210) is arranged at the end of the milling wheel close to the machining surface (1111), the inner diameter of the wheel layer (210) decreasing gradually from the end close to the machining surface (1111) to the end far from the machining surface (1111).

10. The milling device according to claim 9, wherein the milling wheel (200) further comprises a second drive assembly (220), the second drive assembly (220) is in driving connection with the wheel layer (210), the second drive assembly (220) drives the wheel layer (210) to rotate around a second direction, the second drive assembly (220) drives the wheel layer (210) to move in a third direction, and the second drive assembly (220) drives the wheel layer (210) to oscillate in a direction approaching or separating from the axis of rotation of the clamping structure (100);

the second direction and the first direction are arranged at an angle, and the third direction is perpendicular to the first direction.