CN220839437U - Grinding machine - Google Patents

Abstract

The embodiment of the utility model relates to the technical field of grinding machines, in particular to a grinding machine, which comprises a shell, a driving mechanism, a self-locking mechanism and an output mechanism, wherein the driving mechanism is provided with a first rotating shaft, the driving mechanism is arranged in the shell, the self-locking mechanism is fixed in the shell, the self-locking mechanism is connected with the first rotating shaft, the output mechanism is detachably arranged on the self-locking mechanism, the output mechanism is provided with a second rotating shaft, the second rotating shaft is used for connecting functional accessories, the self-locking mechanism is used for driving the output mechanism to rotate relative to the shell when the first rotating shaft is driven, and the self-locking mechanism is locked relative to the shell when the output mechanism is driven, so that the output mechanism is not allowed to rotate relative to the shell, the functional accessories can be replaced more conveniently and rapidly, and the use experience of a user is improved.

Description

Grinding machine

Technical Field

The embodiment of the utility model relates to the technical field of a mill, in particular to a mill.

Background

The mill is a device commonly used in the industry and medical field, and can be used for cutting, polishing and the like, at present, the mill mainly comprises a driving module and a functional accessory, the functional accessory is arranged on an output shaft of the driving module, the functional accessory is driven to rotate through rotation of the output shaft so as to realize the functions of the functional accessory, and the assembled functional accessories are different in function.

In carrying out the utility model, the inventors found that: the output shaft of the driving module can still rotate freely when the driving module is stopped, and when the functional accessory needs to be replaced, a user needs to manually hold the output shaft to keep the output shaft motionless, and then the functional accessory is mounted on the output shaft or removed from the output shaft, so that the operation is more troublesome.

Disclosure of utility model

The embodiment of the utility model mainly solves the technical problem of providing the mill, which can realize the self-locking function of the output mechanism relative to the shell, so that the mill is more convenient to replace functional accessories.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a mill, including casing, actuating mechanism, self-locking mechanism and output mechanism, actuating mechanism is provided with first pivot, actuating mechanism install in the casing, self-locking mechanism is fixed in the casing, self-locking mechanism connect in first pivot, output mechanism demountable installation in self-locking mechanism, output mechanism is provided with the second pivot, the second pivot is used for connecting the function accessory, wherein, self-locking mechanism is used for when first pivot drives, self-locking mechanism drives output mechanism and rotates for the casing when output mechanism drives, self-locking mechanism locks for the casing, does not allow output mechanism rotates for the casing.

Optionally, the self-locking mechanism is provided with a first shaft seat, a second shaft seat, a locking ring and a rotating column, the locking ring is fixed on the shell, the locking ring is provided with a mounting cavity, and the first shaft seat is arranged in the mounting cavity; the first shaft seat comprises a first seat body, a first annular wall and a second annular wall, the first annular wall and the second annular wall are arranged on the first seat body at intervals, the first annular wall, the second annular wall and the first seat body enclose a containing cavity together, the second shaft seat is rotatably arranged in the containing cavity, a limiting space is enclosed together by the second shaft seat, the first annular wall, the second annular wall and the locking ring, and the rotating column is movably contained in the limiting space; when the first rotating shaft drives, the first rotating shaft drives the first shaft seat to rotate, one of the first annular wall and the second annular wall synchronously pushes the second shaft seat and the rotating column to rotate relative to the locking ring, and the second rotating shaft drives the output mechanism to rotate relative to the locking ring; when the output mechanism is driven, the rotary column clamps the second shaft seat and the locking ring, and the output mechanism is not allowed to rotate relative to the locking ring; the rotating column comprises a first rotating column and a second rotating column, and the limiting space comprises a first limiting space; the second shaft seat comprises a second seat body and a first extension part which is obtained by extending from a first side wall of the second seat body, the first limiting space is formed by the joint of the first side wall of the second seat body, one end of a first annular wall, one end of a second annular wall and a locking ring, the second rotating shaft is fixed on the surface of the second seat body, which is away from the first seat body, the first extension part is inserted into a space formed by spacing one end of the first annular wall and one end of the second annular wall, and the first extension part divides the first limiting space into a first space and a second space; the first rotating column is located in the first space, and the second rotating column is located in the second space.

Optionally, a first recess and a second recess are formed at the connection position between the two sides of the first extension part and the first side wall respectively, the first recess corresponds to the first space, the first rotating post is arranged in the first recess, and the first recess is used for limiting the first rotating post; the second recess corresponds to the second space, the second rotating post is arranged in the second recess, and the second recess is used for limiting the second rotating post.

Optionally, the limiting space comprises a second limiting space, and the second limiting space is formed by the second side wall of the second seat body, the other end of the first annular wall, the other end of the second annular wall and the locking ring in a surrounding manner; the rotary column comprises a third rotary column and a fourth rotary column; the second shaft seat comprises a second extension part which is obtained by extending from a second side wall of the second seat body, the second extension part is inserted into a space between the other end of the first annular wall and the other end of the second annular wall, and the second extension part divides a second limit space into a third space and a fourth space; the third rotating column is located in the third space, and the fourth rotating column is located in the fourth space.

Optionally, a third recess and a fourth recess are formed at the connection position between the two sides of the second extension part and the second side wall respectively, the third recess corresponds to the third space, the third rotating column is arranged in the third recess, and the third recess is used for limiting the third rotating column; the fourth recess corresponds to the fourth space, the fourth rotating post is arranged in the fourth recess, and the fourth recess is used for limiting the fourth rotating post.

Optionally, the outer loop of locking ring is provided with the draw-in groove, the internal surface of casing is provided with the draw-in groove, the draw-in groove with the draw-in groove block.

Optionally, the central axes of symmetry of the first shaft seat, the second shaft seat and the locking ring are collinear, and the central axis of the rotating column is parallel to the central axis of symmetry of the locking ring.

Optionally, the first shaft seat is provided with first mounting hole, the one end of first pivot set up in first mounting hole, the second shaft seat is provided with the second mounting hole, the one end of first pivot set up in the second mounting hole, the symmetry central axis of first mounting hole and second mounting hole and the symmetry central axis collineation of locking ring.

Optionally, the first mounting hole is substantially "D" shaped.

Optionally, the second shaft seat is further provided with an extension seat, the extension seat axially extends from one side of the second shaft seat, which is away from the first shaft seat, and the inner wall of the extension seat abuts against the second rotating shaft.

The embodiment of the utility model has the beneficial effects that: different from the situation of the prior art, the grinding machine provided by the embodiment of the utility model comprises a shell, a driving mechanism, a self-locking mechanism and an output mechanism, wherein the driving mechanism is provided with a first rotating shaft, the driving mechanism is installed in the shell, the self-locking mechanism is fixed on the shell and connected with the first rotating shaft, the output mechanism is detachably installed on the self-locking mechanism, the output mechanism is provided with a second rotating shaft, the second rotating shaft is used for connecting functional accessories, the self-locking mechanism is used for driving the output mechanism to rotate relative to the shell when the first rotating shaft is driven, and the self-locking mechanism is locked relative to the shell when the output mechanism is driven, so that the output mechanism is not allowed to rotate relative to the shell, the function accessories can be replaced more conveniently and rapidly, and the use experience of users is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded pictorial view of an embodiment mill of the present utility model;

FIG. 2 is an exploded view of one embodiment of a self-locking mechanism of the mill of the utility model;

FIG. 3 is a schematic front view of an embodiment of a self-locking mechanism of the mill of the utility model.

Reference numerals illustrate: 1. a driving mechanism; 2. a self-locking mechanism; 3. an output mechanism;

11. A first rotating shaft; 12. a rotating module;

21. A first shaft seat; 22. a second axle seat; 23. a rotating column; 24. a locking ring; 25. a limit space;

210. A first base; 211. a first annular wall; 212. a second annular wall; 213. a first mounting hole; 214. a housing chamber; 2110. a first limit groove; 2120. the second limit groove;

220. A second seat body; 221. a first sidewall; 222. a second sidewall; 225. abutting against the plane; 226. a second mounting hole; 227. an extension seat; 2210. a first extension; 2220. a second extension; 2251. a first abutment plane; 2252. a second abutment plane; 2211. a first recess; 2212. a second recess; 2221. a third recess; 2222. a fourth recess;

231. a first swivel post; 232. a second swivel post; 233. a third rotating column; 234. a fourth rotating column;

241. a mounting cavity; 242. a clamping table;

251. The first limiting space; 252. the second limiting space; 2511. a first space; 2512. a second space; 2521. a third space; 2522. a fourth space;

31. a second rotating shaft; 32. a bearing; 33. a fitting mounting base;

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. 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 one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

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 utility model 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 in this specification includes any and all combinations of one or more of the associated listed items.

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", "a second" may include one or more such features, either explicitly or implicitly; the meaning of "plurality" is two or more. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1, a mill is a device commonly used in the industry and medical fields. The grinding machine comprises a shell (not shown), a driving mechanism 1, a self-locking mechanism 2 and an output mechanism 3, wherein the driving mechanism 1 is arranged in the shell, the self-locking mechanism 2 is fixed on the shell, the output mechanism 3 is rotatably arranged in the shell, one end of the self-locking mechanism 2 is connected with the driving mechanism 1, and the other end of the self-locking mechanism 2 is connected with the output mechanism 3. The self-locking mechanism 2 can realize that the driving mechanism 1 can drive the output mechanism 3, but the output mechanism 3 can not reversely drive the driving mechanism 1, so that the self-locking function of the output mechanism 3 relative to the shell is realized. It is understood that the power source used by the mill can be a power source or an air source, and can also be driven by other engines and the like.

For the above-mentioned driving mechanism 1, please continue to refer to fig. 1, the driving mechanism 1 is provided with a first rotating shaft 11 and a rotating module 12, one end of the first rotating shaft 11 is disposed on the rotating module 12, and the rotating module 12 drives the first rotating shaft 11 to rotate. It will be appreciated that in the embodiment using a power source as a power source, the driving mechanism 1 is a motor, the first rotating shaft 11 is an output shaft of the motor, and the driving module is a rotor and a stator of the motor; in the embodiment adopting the air source as the power source, the rotating module 12 is provided with a turbine, the first rotating shaft 11 is connected with the turbine, the air source blows the turbine to rotate, the turbine drives the first rotating shaft 11 to rotate, and then the first rotating shaft 11 drives the output mechanism 3 through the self-locking mechanism 2; in embodiments employing engine drive, the rotation module 12 may be an associated decelerator or accelerator, provided that the rotation of the first shaft 11 is effected. The first shaft 11 of the driving mechanism 1 may be rotated in either reverse or forward directions, and the first shaft 11 may not be affected to drive the output mechanism 3 by the self-locking mechanism 2.

For the output mechanism 3, referring to fig. 1, the output mechanism 3 is provided with a second rotating shaft 31, a bearing 32 and an accessory mounting seat 33, the second rotating shaft 31 is mounted on an inner ring of the bearing 32, an outer ring of the bearing 32 is disposed on the housing, one end of the second rotating shaft 31 is connected with the self-locking mechanism 2, and the other end of the second rotating shaft 31 protrudes out of the housing and is connected with the accessory mounting seat 33. The accessory mount 33 may be used to mount functional accessories, which may enable the mill to have different functions. It is understood that the accessory mounting base 33 may be integrally formed with the second rotating shaft 31, for example, may be non-integrally formed, and the accessory mounting base 33 and the second rotating shaft 31 may be fixedly connected by screwing, welding, clamping, or the like. In some embodiments, the bearing 32 may be omitted, with shaft work being output directly without the bearing 32.

It should be noted that, when the first rotation shaft 11 is driven, the self-locking mechanism 2 drives the output mechanism 3 to rotate relative to the housing, and when the output mechanism 3 is driven, the self-locking mechanism 2 is locked relative to the housing and the output mechanism 3 is not allowed to rotate relative to the housing.

For the self-locking mechanism 2, referring to fig. 2 and 3, the self-locking mechanism 2 is provided with a first shaft seat 21, a second shaft seat 22, a locking ring 24 and a rotating post 23, the locking ring 24 is fixed on the housing, the locking ring 24 is provided with a rotating cavity 241, the first shaft seat 21 is arranged in the mounting cavity 241, the second shaft seat 22 is rotatably embedded in the first shaft seat 21, the rotating post 23 is arranged in a limiting space 25 formed by the first shaft seat 21 and the second shaft seat 22, the first shaft seat 21 and the second shaft seat 22 can rotate relative to the locking ring 24, the rotating post 23 can move or rotate relative to the inner wall of the locking ring 24, and the first shaft seat 21 can push the second shaft seat 22 and the rotating post 23 to rotate.

The self-locking mechanism 2 realizes the principle of self-locking as follows: when the driving mechanism 1 drives the first shaft 11 to rotate, the first shaft 11 drives the first shaft seat 21 to rotate, the first annular wall 211 or the second annular wall 212 of the first shaft seat 21 pushes the second shaft seat 22 and the rotating post 23 to rotate relative to the locking ring 24, and at this time, the thrust direction received by the rotating post 23 is tangential force to the outer edge of the first shaft seat 21, so that the rotating post 23 can perform a circular motion relative to the locking ring 24. When the driving mechanism 1 does not drive the first rotating shaft 11 to rotate any more, that is, when a user needs to replace or disassemble the functional accessory, the force applied by the user to the output mechanism 3 has a tendency to rotate the second rotating shaft 31, at this time, the second rotating shaft 31 transmits the force to the second shaft seat 22, the second shaft seat 22 rotates in a small amplitude so as to tightly prop up the rotating column 23, at this time, the thrust direction born by the rotating column 23 is approximately the radial direction of the second shaft seat 22, so that the second shaft seat 22, the rotating column 23 and the locking ring 24 can not rotate any more, and the purpose of self locking is achieved.

For the above-mentioned locking ring 24, referring to fig. 2, the locking ring 24 has a circular ring structure with a certain length along the central axis direction of the locking ring 24. It can be understood that the first shaft seat 21 and the inner ring of the locking ring 24 are in surface contact, but after the actual installation, a certain gap is formed between the first shaft seat 21 and the inner ring of the locking ring 24, that is, the locking ring 24 is fixed on the housing, the first shaft seat 21 is connected with the first rotating shaft 11, and the first shaft seat 21 and the locking ring 24 are not in direct contact, so as to reduce friction force and reduce abrasion of the self-locking mechanism 2. The rotary column 23 and the locking ring 24 are in line contact, the rotary column 23 can slide or rotate relative to the inner wall of the locking ring 24, and friction force between the rotary column 23 and the inner wall of the locking ring 24 is reduced.

In other embodiments, the locking ring 24 is further provided with a clamping table 242, the clamping table 242 is disposed on an outer ring of the locking ring 24, meanwhile, a clamping groove is formed in an inner surface of the housing, the clamping table 242 is clamped with the clamping groove, the number of the clamping tables 242 can be one or more, the clamping table 242 is used for increasing friction force between the locking ring 24 and the housing, and situations of rotation, slipping and the like between the locking ring 24 and the housing caused by excessive force of a user when the mill changes functional accessories are avoided. The shape of the clamping table 242 may be a rectangular parallelepiped, a cylindrical, or the like, and the shape of the clamping groove is adaptively set according to the shape of the clamping table 242. It should be understood that the locking ring 24 may be provided without the clamping table 242, and the locking ring 24 and the housing may be fixed more firmly by grooving or increasing surface roughness on the outer ring of the locking ring 24.

Referring to fig. 2 and 3, the first shaft seat 21 includes a first seat body 210, a first annular wall 211 and a second annular wall 212. The first base 210 is substantially disc-shaped, the first annular wall 211 and the second annular wall 212 are disposed at intervals on the first base 210, specifically, the first annular wall 211 and the second annular wall 212 are disposed around the edge of the first base 210, the first annular wall 211, the second annular wall 212 and the first base 210 enclose a containing cavity 214 together, the second shaft seat 22 is disposed in the containing cavity 214 in a rotating manner, and the second shaft seat 22, the first annular wall 211, the second annular wall 212 and the locking ring 24 enclose a limiting space 25 together, so that the rotary column 23 is movably contained in the limiting space 25.

The rotation post 23 includes a first rotation post 231 and a second rotation post 232, the limit space 25 includes a first limit space 251, and the second shaft housing 22 includes a second housing 220 and a first extension 2210 extending from a first sidewall 221 of the second housing 220. The first limiting space 251 is formed by enclosing a first side wall 221 of the second seat 220, one end of the first annular wall 211, one end of the second annular wall 212 and the locking ring 24 together, the second rotating shaft 31 is fixed on the surface of the second seat 220 facing away from the first seat 210, the first extending portion 2210 is inserted into a space between one end of the first annular wall 211 and one end of the second annular wall 212, the first extending portion 2210 divides the first limiting space 251 into a first space 2511 and a second space 2512, the first rotating column 231 is located in the first space 2511, and the second rotating column 232 is located in the second space 2512.

Both sides of the first extension 2210 form a first recess 2211 and a second recess 2212 at the connection with the first sidewall 221, respectively. The first recess 2211 and the second recess 2212 are approximately concave towards the symmetrical central axis of the second shaft seat 22, the first recess 2211 corresponds to the first space 2511, the first rotating column 231 is arranged in the first recess 2211, the second recess 2212 corresponds to the second space 2512, the second rotating column 232 is arranged in the second recess 2212, the first recess 2211 is used for limiting the first rotating column 231, and the second recess 2212 is used for limiting the second rotating column 232. The first stud 231 contacts with two points on the first recess 2211, that is, one point is located at the first extension portion 2210 and the other point is located at the first sidewall 221, the point located at the first extension portion 2210 is used for pushing the second axle seat 22 circumferentially or being pushed circumferentially by the second axle seat 22, and the point located at the first sidewall 221 is used for abutting against the first stud 231 to locate at the first recess 2211 without slipping or for abutting against the first stud 231 to change the stress direction thereof into a radial direction, so that the second axle seat 22 is immovable relative to the locking ring 24. The abutting relationship between the second rotating post 232 and the second recess 2212 is the same as that between the first rotating post 231 and the first recess 2211, and will not be described again.

The rotary column 23 further includes a third rotary column 233 and a fourth rotary column 234, the limit space 25 further includes a second limit space 252, the second limit space 252 is formed by enclosing the second side wall 222 of the second seat body 220, the other end of the first annular wall 211, the other end of the second annular wall 212 and the locking ring 24 together, and the first limit space 251 and the second limit space 252 are oppositely arranged. The second shaft seat 22 includes a second extension portion 2220 extending from the second side wall 222 of the second seat body 220, the second extension portion 2220 being inserted into a space between the other end of the first annular wall 211 and the other end of the second annular wall 212, the second extension portion 2220 dividing the second limiting space 252 into a third space 2521 and a fourth space 2522. The third column 233 is located in the third space 2521 and the fourth column 234 is located in the fourth space 2522.

Both sides of the second extension portion 2220 form a third recess 2221 and a fourth recess 2222 at the connection with the second sidewall 222, respectively, the third recess 2221 corresponds to the third space 2521, the third rotation column 233 is disposed in the third recess 2221, and the third recess 2221 is used for limiting the third rotation column 233. The fourth recess 2222 corresponds to the fourth space 2522, and the fourth rotary column 234 is disposed in the fourth recess 2222, and the fourth recess 2222 serves to restrict the fourth rotary column 234. The abutting relationship of the third rotation column 233 and the third recess 2221, and the abutting relationship of the fourth rotation column 234 and the fourth recess 2222 are the same as the abutting relationship of the first rotation column 231 and the first recess 2211, and will not be described again.

For convenience of description of the driving process, in this embodiment, the first space 2511, the second space 2512, the third space 2521 and the fourth space 2522 are sequentially arranged according to the first rotation direction, when the driving mechanism 1 drives the first rotation shaft 11 to the first rotation direction, one end of the first annular wall 211 of the first shaft seat 21 pushes the first rotation column 231, the first rotation column 231 further pushes the first extension portion 2210 of the second shaft seat 22, and the first extension portion 2210 pushes the second rotation column 232 to rotate; at the same time, one end of the second annular wall 212 of the first shaft seat 21 pushes the third rotating column 233, the third rotating column 233 further pushes the second extension portion 2220 of the second shaft seat 22, and the second extension portion 2220 pushes the fourth rotating column 234. Because the self-locking mechanism 2 is a symmetrical structure, the process that the driving mechanism 1 drives the first rotating shaft 11 to rotate along the second rotating direction and further drives the output mechanism 3 is similar to the above process, and the description is omitted here, wherein the first rotating direction and the second rotating direction are opposite.

It should be noted that the number of the annular walls provided by the first shaft seat 21 may be plural, that is, in addition to the first annular wall 211 and the second annular wall 212, a third annular wall, a fourth annular wall, etc. may be provided, and the side wall provided on the second shaft seat 22 may be adaptively changed along with the number of the annular walls provided by the first shaft seat 21.

It should be noted that the central axes of symmetry of the first shaft seat 21, the second shaft seat 22 and the locking ring 24 are collinear, the rotary column 23 adopts a cylinder, and the central axis of the rotary column 23 is parallel to the central axis of symmetry of the locking ring 24.

The first shaft seat 21 is provided with a first mounting hole 213, one end of the first rotating shaft 11 is arranged in the first mounting hole 213, the second shaft seat 22 is provided with a second mounting hole 226, one end of the first rotating shaft 11 is arranged in the second mounting hole 226, and the symmetrical central axes of the first mounting hole 213 and the second mounting hole 226 are collinear with the symmetrical central axis of the locking ring 24. The side of the second shaft seat 22 facing away from the first shaft seat 21 may further be provided with an extension seat 227, where the extension seat 227 is disposed around the second mounting hole 226, so as to increase the contact area between the second shaft seat 22 and the second shaft seat 31, so that the second shaft seat 31 and the second shaft seat 22 are connected more firmly. It will be appreciated that the shape of the first mounting hole 213 may be arranged according to the end of the first shaft 11, which in this embodiment is substantially "D" shaped. The shape of the first mounting hole may be square, irregular, etc., and similarly, the shape of the second mounting hole 226 may be set according to the end of the second rotating shaft 31, and the shape thereof is not limited, as long as the purpose of transmitting shaft work can be achieved.

The grinding machine comprises a shell, a driving mechanism 1, a self-locking mechanism 2 and an output mechanism 3, wherein the driving mechanism 1 is provided with a first rotating shaft 11, the driving mechanism 1 is installed in the shell, the self-locking mechanism 2 is fixed in the shell, the self-locking mechanism is connected with the first rotating shaft 11, the output mechanism 3 is detachably installed on the self-locking mechanism 2, the output mechanism 3 is provided with a second rotating shaft 31, the second rotating shaft 31 is used for connecting functional accessories, the self-locking mechanism 2 is used for driving the output mechanism 3 to rotate relative to the shell when the first rotating shaft 11 is driven, the self-locking mechanism 2 is locked relative to the shell when the output mechanism 3 is driven, the output mechanism 3 is not allowed to rotate relative to the shell, and therefore the use experience of a user can be improved.

It should be noted that while the present utility model has been illustrated in the drawings and described in connection with the preferred embodiments thereof, it is to be understood that the utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but are to be construed as providing a full breadth of the disclosure. The above-described features are further combined with each other to form various embodiments not listed above, and are considered to be the scope of the present utility model described in the specification; further, modifications and variations of the present utility model may be apparent to those skilled in the art in light of the foregoing teachings, and all such modifications and variations are intended to be included within the scope of this utility model as defined in the appended claims.

Claims (10)

1. A mill, comprising:

A housing;

The driving mechanism is provided with a first rotating shaft and is arranged in the shell;

The self-locking mechanism is fixed on the shell and is connected with the first rotating shaft;

The output mechanism is detachably arranged on the self-locking mechanism and is provided with a second rotating shaft, and the second rotating shaft is used for connecting functional accessories;

The self-locking mechanism is used for driving the output mechanism to rotate relative to the shell when the first rotating shaft is driven, and is locked relative to the shell when the output mechanism is driven, so that the output mechanism is not allowed to rotate relative to the shell.

2. A mill according to claim 1, characterized in that,

The self-locking mechanism comprises a first shaft seat, a second shaft seat, a locking ring and a rotating column, wherein the locking ring is fixed on the shell, the locking ring is provided with an installation cavity, and the first shaft seat is arranged in the installation cavity;

The first shaft seat comprises a first seat body, a first annular wall and a second annular wall, the first annular wall and the second annular wall are arranged on the first seat body at intervals, the first annular wall, the second annular wall and the first seat body enclose a containing cavity together, the second shaft seat is rotatably arranged in the containing cavity, a limiting space is enclosed together by the second shaft seat, the first annular wall, the second annular wall and the locking ring, and the rotating column is movably contained in the limiting space;

When the first rotating shaft drives, the first rotating shaft drives the first shaft seat to rotate, one of the first annular wall and the second annular wall synchronously pushes the second shaft seat and the rotating column to rotate relative to the locking ring, and the second rotating shaft drives the output mechanism to rotate relative to the locking ring;

When the output mechanism is driven, the rotary column clamps the second shaft seat and the locking ring, and the output mechanism is not allowed to rotate relative to the locking ring;

The rotating column comprises a first rotating column and a second rotating column, and the limiting space comprises a first limiting space;

The second shaft seat comprises a second seat body and a first extension part which is obtained by extending from a first side wall of the second seat body, the first limiting space is formed by the joint of the first side wall of the second seat body, one end of a first annular wall, one end of a second annular wall and a locking ring, the second rotating shaft is fixed on the surface of the second seat body, which is away from the first seat body, the first extension part is inserted into a space formed by spacing one end of the first annular wall and one end of the second annular wall, and the first extension part divides the first limiting space into a first space and a second space;

the first rotating column is located in the first space, and the second rotating column is located in the second space.

3. A mill according to claim 2, characterized in that,

Two sides of the first extension part respectively form a first recess and a second recess at the joint of the first extension part and the first side wall, the first recess corresponds to the first space, the first rotating column is arranged in the first recess, and the first recess is used for limiting the first rotating column;

The second recess corresponds to the second space, the second rotating post is arranged in the second recess, and the second recess is used for limiting the second rotating post.

4. A mill according to claim 2, characterized in that,

The limiting space comprises a second limiting space, and the second limiting space is formed by the second side wall of the second seat body, the other end of the first annular wall, the other end of the second annular wall and the locking ring in a surrounding mode;

The rotary column comprises a third rotary column and a fourth rotary column;

the second shaft seat comprises a second extension part which is obtained by extending from a second side wall of the second seat body, the second extension part is inserted into a space between the other end of the first annular wall and the other end of the second annular wall, and the second extension part divides a second limit space into a third space and a fourth space;

The third rotating column is located in the third space, and the fourth rotating column is located in the fourth space.

5. A mill according to claim 4, wherein,

A third recess and a fourth recess are formed at the connection part of the second extension part and the second side wall respectively, the third recess corresponds to the third space, the third rotary column is arranged in the third recess, and the third recess is used for limiting the third rotary column;

The fourth recess corresponds to the fourth space, the fourth rotating post is arranged in the fourth recess, and the fourth recess is used for limiting the fourth rotating post.

6. A mill according to claim 2, characterized in that,

The outer ring of the locking ring is provided with a clamping table, the inner surface of the shell is provided with a clamping groove, and the clamping table is clamped with the clamping groove.

7. A mill according to claim 2, characterized in that,

The central axes of symmetry of the first shaft seat, the second shaft seat and the locking ring are collinear, and the central axis of the rotating column is parallel to the central axis of symmetry of the locking ring.

8. A mill according to claim 2, characterized in that,

The first shaft seat is provided with a first mounting hole, one end of the first rotating shaft is arranged in the first mounting hole, the second shaft seat is provided with a second mounting hole, one end of the first rotating shaft is arranged in the second mounting hole, and the symmetrical central axes of the first mounting hole and the second mounting hole are collinear with the symmetrical central axis of the locking ring.

9. A mill according to claim 8, wherein,

The shape of the first mounting hole is D-shaped.

10. A mill according to claim 2, characterized in that,

The second shaft seat is also provided with an extension seat, one side of the extension seat, which is away from the first shaft seat, of the second shaft seat axially extends, and the inner wall of the extension seat abuts against the second rotating shaft.