Integrated milling cutter assembly and milling device

Abstract

According to the integrated milling cutter assembly and the milling device, after a shoe body, a milling cutter and a limiting sleeve are machined and produced, the milling cutter can be inserted into a containing cavity of the shoe body and can be matched with the shoe body in a rotating mode, and then one side of the limiting sleeve is inserted into the containing cavity until one side of the limiting sleeve is matched with the milling cutter in an axial limiting mode; when bone tissue needs to be milled, an on-site operator only needs to assemble and connect the assembly part on the shoe body with the milling handle and enable the milling cutter to be in transmission connection with the milling handle, so that the whole milling device can be assembled and used, the on-site assembly process is simplified, and the on-site use efficiency is improved; and the boot body and the milling cutter are integrally designed, so that the boot body is replaced when the milling cutter is replaced, the problem that the milling cutter is broken due to deformation caused by repeated use of the boot body is avoided, and the safety in the operation process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an integrated milling cutter assembly and a milling device. Background Art

[0002] During surgical operations, a milling device is usually used to mill bone tissues such as skull caps and vertebral plates. The milling device includes an integrated milling cutter assembly and a milling device. The integrated milling cutter assembly is mounted on the milling device, and the milling device drives the milling cutter to rotate at high speed to achieve milling of bone tissue.

[0003] The integrated milling cutter assembly generally consists of a milling cutter and a boot. When assembling the milling cutter on the milling device, the milling cutter must first be plugged into the front end of the milling device, and then the boot must be placed over the milling cutter and fixed to the front end of the milling device, thereby installing and positioning the milling cutter. It can be seen that the above assembly process requires two operations and lacks convenience. Utility Model Content

[0004] Based on this, it is necessary to provide an integrated milling cutter assembly and milling device to address the problem that the assembly process requires two operations and lacks convenience.

[0005] The technical solution is as follows:

[0006] In one aspect, an integrated milling cutter assembly is provided, comprising:

[0007] A boot body, wherein the boot body is provided with a receiving cavity extending in the axial direction and open at both ends, and an outer side wall of the boot body is provided with an assembly portion for assembly and connection with a milling handle;

[0008] A milling cutter, wherein the milling cutter portion is inserted into the accommodating cavity and rotatably cooperates with the boot body, and the milling cutter abuts against an opening at one end of the accommodating cavity; and

[0009] A limit sleeve, wherein the limit sleeve is arranged on part of the outer peripheral side of the milling cutter and cooperates with the gap of the milling cutter, the limit sleeve is partially blocked at the other end opening of the accommodating cavity and tightly cooperates with the boot body, and the limit sleeve is located on one side of the accommodating cavity and cooperates with the axial limit of the milling cutter.

[0010] The technical solution is further described below:

[0011] In one embodiment, the integrated milling cutter assembly also includes a first bearing arranged in the accommodating cavity and close to the opening at the other end, the first bearing having a first outer ring and a first inner ring that are rotatably matched, the first inner ring is sleeved on the outer side wall of the milling cutter, the first outer ring is radially limited in cooperation with the boot body, and the first outer ring is axially limited in cooperation with the limit sleeve.

[0012] In one embodiment, the integrated milling cutter assembly also includes a second bearing arranged in the accommodating cavity and close to the opening at one end, the second bearing having a second outer ring and a second inner ring that are rotatably matched, the second inner ring is sleeved on the outer side wall of the milling cutter, and the second outer ring is radially limitedly matched with the boot body.

[0013] In one embodiment, the inner side wall of the accommodating cavity is provided with a first limiting portion, and the outer side wall of the milling cutter is provided with a second limiting portion, and the first limiting portion and the second limiting portion are respectively axially limited with two opposite sides of the second outer ring.

[0014] In one of the embodiments, the inner side wall of the accommodating cavity is further provided with a third limiting portion, and the third limiting portion and the limiting sleeve are respectively axially limited on two opposite sides of the first outer ring.

[0015] In one embodiment, the inner wall of the accommodating cavity is further provided with a first positioning portion, and the outer wall of the limiting sleeve is provided with a second positioning portion, and when the second positioning portion is positioned and matched with the first positioning portion, the side of the limiting sleeve located in the accommodating cavity is limitedly matched with the first outer ring.

[0016] In one embodiment, the first positioning portion includes a first positioning shoulder, the second positioning portion includes a second positioning shoulder, and the first positioning shoulder and the second positioning shoulder are in abutment with each other for positioning.

[0017] In one embodiment, the boot body is further provided with an insertion cavity connected to the rear end of the accommodating cavity, the insertion cavity has an insertion opening arranged toward the milling handle, the limiting sleeve is partially arranged in the accommodating cavity and the insertion cavity through the insertion opening, and the assembly part is arranged close to the insertion opening.

[0018] In one embodiment, the boot body includes a boot foot, a boot bow and a boot rod, the opposite ends of the boot bow are respectively connected to the boot foot and the boot rod, the boot rod is provided with the accommodating chamber, the insertion chamber and the assembly portion, the boot bow is provided with a working chamber connected to the accommodating chamber and having a side opening, and the boot foot is provided with an insertion chamber connected to the working chamber; the milling cutter includes a tip section, a blade section and a rod section, the opposite ends of the blade section are respectively connected to the tip section and the rod section, the tip section is inserted in the insertion chamber and rotatably cooperates with the boot foot, the blade section is located in the working chamber, the rod section is partially arranged in the accommodating chamber and the insertion chamber and rotatably cooperates with the boot rod, the side of the limit sleeve facing away from the milling handle is limitedly cooperated with the rod section, and the end of the rod section away from the blade section is transmission connected to the milling handle.

[0019] On the other hand, a milling device is provided, including a milling handle and the integrated milling cutter assembly, wherein the milling handle is assembled and connected to the assembly portion, and the milling handle is transmission-connected to the milling cutter to drive the milling cutter to rotate axially.

[0020] The integrated milling cutter assembly and milling device of the above-mentioned embodiment can realize the assembly connection between the integrated milling cutter assembly and the milling handle by using the assembly part on the outer wall of the boot body, and the limiting sleeve only needs to be limited with the milling cutter to prevent the milling cutter from axial movement. In addition, after the boot body, the milling cutter and the limiting sleeve are processed and produced, the milling cutter can be inserted into the accommodating cavity of the boot body and the milling cutter can be rotatably matched with the boot body, and then one side of the limiting sleeve is inserted into the accommodating cavity until one side of the limiting sleeve is axially limited with the milling cutter, thereby forming an integrated milling cutter assembly (i.e., the boot body and the milling cutter are integrated). When it is necessary to mill bone tissue, the on-site operator only needs to assemble and connect the assembly part on the boot body with the milling handle, and make the milling cutter and the milling handle transmission connection to complete the assembly of the entire milling device for use, which simplifies the on-site assembly process and improves the on-site use efficiency; and because the boot body and the milling cutter are of an integrated design, the boot body is replaced together with the milling cutter when the milling cutter is replaced, avoiding the problem of the milling cutter breaking caused by the deformation of the boot body due to repeated use, and ensuring the safety during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic structural diagram of an integrated milling cutter assembly according to an embodiment;

[0024] Figure 2 for Figure 1 Axial exploded view of the integrated milling cutter assembly;

[0025] Figure 3 for Figure 1 Cross-sectional view of the integrated milling cutter assembly AA.

[0026] Description of reference numerals:

[0027] 10. Integrated milling cutter assembly; 100. Boot body; 110. Accommodating cavity; 111. First limiting portion; 112. First positioning portion; 113. Insertion port; 120. Assembly portion; 130. Boot foot; 131. Insertion cavity; 140. Boot bow; 141. Working cavity; 1411. Side opening; 150. Boot rod; 160. Insertion cavity; 200. Milling cutter; 210. Tip section; 220. Blade section; 230. Rod section; 240. Second limiting portion; 300. Limiting sleeve; 310. Second positioning portion; 400. First bearing; 500. Second bearing. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0029] like Figure 1 and Figure 2 As shown, in one embodiment, a milling device is provided, including a milling handle (not shown) and an integrated milling cutter assembly 10. The milling handle is assembled and connected with the integrated milling cutter assembly 10. During use, the milling handle can serve as a gripping portion, so that the integrated milling cutter assembly 10 is used to mill bone tissue. In addition, the on-site operator only needs to simply assemble it on-site before use, which improves the efficiency and convenience of on-site use.

[0030] like Figures 1 to 3 As shown, in one embodiment, an integrated milling cutter assembly 10 is provided, including a boot body 100 , a milling cutter 200 and a limiting sleeve 300 .

[0031] like Figure 2 and Figure 3 As shown, the boot body 100 is provided with a Figure 2 The boot body 100 further includes a receiving cavity 110 extending in the direction of B and opened at both ends, and an assembly portion 120 is provided on the outer wall of the boot body 100, so that the assembly connection between the boot body 100 and the milling handle can be achieved through the assembly portion 120, thereby achieving the assembly connection between the integrated milling cutter assembly 10 and the milling handle.

[0032] The assembly connection between the assembly portion 120 and the milling handle may be achieved by snap-fitting or plug-in.

[0033] In one embodiment, an annular groove is provided on the assembly portion 120, and an annular latching tooth is provided on the milling handle, and the assembly connection between the boot body 100 and the milling handle is achieved through the latching fit between the latching tooth and the groove.

[0034] like Figure 2 and Figure 3 As shown, the milling cutter 200 is partially inserted into the accommodating cavity 110 and rotatably cooperates with the boot body 100, that is, the milling cutter 200 is inserted into the accommodating cavity 110 of the boot body 100, and the milling cutter 200 can rotate relative to the boot body 100 around its own axial direction. Moreover, the milling cutter 200 abuts against an opening at one end of the accommodating cavity 110. At the same time, one end of the milling cutter 200 is transmission-connected with a milling handle, so that the milling handle is used to transmit the rotational power to the milling cutter 200 to drive the milling cutter 200 to rotate relative to the boot body 100 around its own axial direction.

[0035] It should be noted that the transmission connection between the milling cutter 200 and the milling handle can be achieved by plug-in cooperation between the shaft and the hole, or by intermediate elements such as couplings. A rotating drive component such as a motor can be provided on the milling handle to drive the milling cutter 200 to rotate around its own axial direction. Since it may belong to the prior art, it will not be elaborated here.

[0036] like Figure 2 and Figure 3 As shown, the limiting sleeve 300 is sleeved on part of the outer peripheral side of the milling cutter 200 and is in clearance fit with the milling cutter 200, so as to avoid the limiting sleeve 300 interfering with the rotation of the milling cutter 200. In addition, the limiting sleeve 300 is partially blocked in the accommodating cavity 110 and is tightly fitted with the boot body 100 by means of interference fit or the like. Moreover, the limiting sleeve 300 is located at the other end opening of the accommodating cavity 110. In this way, one side of the limiting sleeve 300 is inserted into the accommodating cavity 110 so that the limiting sleeve 300 is tightly connected to the boot body 100, and also the side of the limiting sleeve 300 inserted into the accommodating cavity 110 conflicts with the milling cutter 200 to achieve axial limiting fit, thereby avoiding axial movement of the milling cutter 200.

[0037] The integrated milling cutter assembly 10 of the above-mentioned embodiment can realize the assembly connection between the integrated milling cutter assembly 10 and the milling handle by using the assembly portion 120 on the outer wall of the boot body 100. The limiting sleeve 300 only needs to be limited and matched with the milling cutter 200 to prevent the milling cutter 200 from axial movement. Therefore, the limiting sleeve 300 can be made of flexible materials such as injection molding, which can reduce the production cost and use cost of the integrated milling cutter assembly 10. In addition, after the boot body 100, the milling cutter 200 and the limiting sleeve 300 are processed and produced, the milling cutter 200 can be inserted into the accommodating cavity 110 of the boot body 100 so that the milling cutter 200 and the boot body 100 can be rotatably matched, and then one side of the limiting sleeve 300 is inserted into the accommodating cavity 110 until one side of the limiting sleeve 300 is axially limited and matched with the milling cutter 200, thereby forming an integrated milling cutter assembly 10 (i.e., the boot body 100 and the milling cutter 200 are designed as an integrated whole). When it is necessary to mill bone tissue, on-site operation is convenient. The operator only needs to assemble and connect the assembly part 120 on the boot body 100 with the milling handle, and make the milling cutter 200 transmission-connected with the milling handle to complete the assembly of the entire milling device for use, which simplifies the on-site assembly process and improves the on-site use efficiency; and because the boot body 100 and the milling cutter 200 are of integrated design, the boot body 100 is replaced when the milling cutter 200 is replaced, avoiding the problem of breakage of the milling cutter 200 caused by deformation of the boot body 100 due to repeated use, thereby ensuring safety during the operation.

[0038] The limiting cooperation between the limiting sleeve 300 and the milling cutter 200 may be achieved by direct abutment or by indirect abutment.

[0039] like Figure 2 As shown, optionally, the integrated milling cutter assembly 10 further includes a first bearing 400 disposed in the accommodating cavity 110 and near the opening at the other end. The first bearing 400 has a first outer ring and a first inner ring that are rotatably matched. Moreover, the first inner ring is sleeved on the outer wall of the milling cutter 200 and is assembled and connected with the milling cutter 200 by means of interference fit or the like. The first outer ring is radially limited with the boot body 100, thereby preventing the first outer ring from radially displacing relative to the boot body 100, and further preventing the first bearing 400 from radially displacing relative to the boot body 100. Moreover, the first outer ring is axially limited with the limiting sleeve 300. In this way, a rotatable assembly connection between the milling cutter 200 and the boot body 100 can be achieved through the first bearing 400, so that the rotation of the milling cutter 200 is smoother. At the same time, the axial limiting cooperation between the limit sleeve 300 and the first outer ring can prevent the first bearing 400 from axial movement, thereby preventing the milling cutter 200 from axial movement relative to the boot body 100, thereby ensuring the reliability and stability of the milling of the milling cutter 200.

[0040] like Figure 3As shown, further, the integrated milling cutter assembly 10 also includes a second bearing 500 disposed in the accommodating cavity 110 and near the opening at one end, that is, the second bearing 500 is spaced apart from the first bearing 400 along the axial direction, and the second bearing 500 is disposed away from the limiting sleeve 300 relative to the first bearing 400. In addition, the second bearing 500 has a second outer ring and a second inner ring that are rotatably matched. In addition, the second inner ring is sleeved on the outer side wall of the milling cutter 200 and is assembled and connected with the milling cutter 200 by means of interference fit or the like, and the second outer ring is radially limitedly matched with the boot body 100, thereby preventing the second outer ring from radially displacing relative to the boot body 100, and further preventing the second bearing 500 from radially displacing relative to the boot body 100. In this way, the second bearing 500 can realize a rotatable assembly connection between the milling cutter 200 and the boot body 100, so that the rotation of the milling cutter 200 is smoother. At the same time, the first bearing 400 and the second bearing 500 cooperate to support the milling cutter 200, ensuring that the force on the milling cutter 200 is more uniform, which is beneficial to avoid deformation of the milling cutter 200 and extend the service life of the milling cutter 200.

[0041] like Figure 3 As shown, further, the inner wall of the accommodating cavity 110 is provided with a first limiting portion 111, and the outer wall of the milling cutter 200 is provided with a second limiting portion 240. In addition, the first limiting portion 111 and the second limiting portion 240 are respectively matched with the axial limiting of the two opposite sides of the second outer ring. Specifically, the first limiting portion 111 is arranged on one side of the second outer ring, and the second limiting portion 240 is arranged on the other side opposite to the second outer ring, so that the first limiting portion 111 and the second limiting portion 240 are used to axially limit the second outer ring to prevent the second outer ring from axially moving relative to the boot body 100, thereby preventing the milling cutter 200 from axially moving relative to the boot body 100, and combining the axial limiting cooperation of the limiting sleeve 300 with the first bearing 400, the reliability and stability of the milling of the milling cutter 200 are more effectively guaranteed.

[0042] The first limiting portion 111 may be in the form of a limiting protrusion or a limiting flange.

[0043] The second limiting portion 240 may be in the form of a limiting protrusion or a limiting flange.

[0044] In addition, the rotating inner side wall is also provided with a third limiting portion. The third limiting portion and the limiting sleeve 300 respectively limit the axial positions of the two opposite sides of the first outer ring. Specifically, the third limiting portion is arranged on one side of the first outer ring, and the limiting sleeve 300 is arranged on the other side opposite to the first outer ring. Thus, the third limiting portion and the limiting sleeve 300 are used to limit the axial position of the first outer ring to prevent the axial movement of the first outer ring relative to the boot body 100, thereby preventing the axial movement of the milling cutter 200 relative to the boot body 100. Combined with the axial limiting cooperation of the first limiting portion 111 and the second limiting portion 240 on the second bearing 500, the reliability and stability of the milling of the milling cutter 200 are more effectively guaranteed.

[0045] The third limiting portion may be in the form of a limiting protrusion or a limiting flange.

[0046] like Figure 3 As shown, in addition, the inner wall of the accommodating cavity 110 is further provided with a first positioning portion 112, and the outer wall of the limiting sleeve 300 is provided with a second positioning portion 310. Moreover, when the second positioning portion 310 is positioned and matched with the first positioning portion 112, the side of the limiting sleeve 300 located in the accommodating cavity 110 is limitedly matched with the first outer ring. In this way, the insertion between the limiting sleeve 300 and the boot body 100 is positioned by the positioning and matching between the first positioning portion 112 and the second positioning portion 310, so as to ensure the accuracy of the assembly between the limiting sleeve 300 and the boot body 100, and avoid the problem of being unable to realize axial limitation of the first outer ring due to the failure of the limiting sleeve 300 to be inserted in place, and also avoid the damage of the first outer ring due to excessive insertion of the limiting sleeve 300.

[0047] The positioning cooperation between the first positioning portion 112 and the second positioning portion 310 may be achieved through interference or insertion.

[0048] In one embodiment, the first positioning portion 112 includes a first positioning shoulder, and the second positioning portion 310 includes a second positioning shoulder, so that the limiting sleeve 300 and the boot body 100 are accurately assembled and connected through the interference positioning between the first positioning shoulder and the second positioning shoulder.

[0049] like Figure 2As shown, optionally, the boot body 100 is also provided with an insertion cavity 160 connected to the rear end of the accommodating cavity 110, and the insertion cavity 160 has an insertion port 113 arranged toward the milling handle. Moreover, the limiting sleeve 300 is inserted into the insertion cavity 160 and the accommodating cavity 110 through the insertion port 113 so that part of the limiting portion is arranged in the accommodating cavity 110 and the insertion cavity 160 and is tightly matched with the boot body 100, until one side of the limiting sleeve 300 is axially limited with the milling cutter 200, thus completing the assembly connection between the limiting sleeve 300 and the boot body 100. Moreover, the assembly portion 120 is arranged close to the insertion port 113, so that the side of the integrated milling cutter assembly 10 having the insertion port 113 is aligned with the milling handle, so that the assembly portion 120 is assembled and connected with the milling handle, that is, the assembly connection between the integrated milling cutter assembly 10 and the milling handle is completed.

[0050] like Figure 2 and Figure 3As shown, in one embodiment, the boot body 100 includes a boot foot 130, a boot bow 140 and a boot shaft 150. The two opposite ends of the boot bow 140 are respectively connected to the boot foot 130 and the boot shaft 150, that is, along the axial direction, one end of the boot bow 140 is connected to the boot foot 130, and the other end of the boot bow 140 is connected to the boot shaft 150. Preferably, the boot foot 130, the boot bow 140 and the boot shaft 150 are integrally formed. The shoe rod 150 is provided with a receiving chamber 110, an inserting chamber 160 and an assembly portion 120, the shoe bow 140 is provided with a working chamber 141 communicating with the receiving chamber 110 and having a side opening 1411, and the shoe foot 130 is provided with an inserting chamber 131 communicating with the working chamber 141. Preferably, the central axis of the inserting chamber 131, the central axis of the working chamber 141, the central axis of the receiving chamber 110 and the central axis of the inserting chamber 160 are mutually collinear, so as to ensure the coaxiality of the milling cutter 200, avoid deformation of the milling cutter 200 and extend the service life of the milling cutter 200. The milling cutter 200 includes a tip section 210, a blade section 220 and a shank section 230. The opposite ends of the blade segment 220 are connected to the blade tip segment 210 and the shank segment 230, respectively, that is, along the axial direction, one end of the blade segment 220 is connected to the blade tip segment 210, and the other end of the blade segment 220 is connected to the shank segment 230. Preferably, the blade tip segment 210, the blade segment 220 and the shank segment 230 are integrally formed. The end of the blade tip segment 210 is inserted into the insertion cavity 131 and is rotatably matched with the boot foot 130 through bearing assembly and other methods, so that the blade tip segment 210 can be supported to prevent the blade tip segment 210 from being suspended in the air and causing uneven force on the whole milling cutter 200. The blade segment 220 is located in the working cavity 141, and bone tissue can enter the working cavity 141 from the side opening 1411, and the bone tissue is milled by the rotating blade segment 220. The shank segment 230 is partially disposed in the accommodating cavity 110 and the inserting cavity 160 and is rotatably matched with the shoe rod 150. Optionally, the shank segment 230 located in the accommodating cavity 110 is assembled and connected with the shoe rod 150 through the first bearing 400 and the second bearing 500. The side of the limiting sleeve 300 away from the milling handle is limitedly matched with the shank segment 230, so that the axial limit of the shank segment 230 by the limiting sleeve 300 is realized to limit the axial position of the entire milling cutter 200. The end of the shank segment 230 away from the blade segment 220 is transmission-connected with the milling handle, so that the entire milling cutter 200 can be driven to rotate around its own axis.

[0051] It should be noted that "some body" or "some part" can be a part of the corresponding "component", that is, "some body" or "some part" can be integrally formed with the "other parts of the component"; it can also be an independent component that can be separated from the "other parts of the component", that is, "some body" or "some part" can be manufactured independently and then combined with the "other parts of the component" into a whole. The expression of the above-mentioned "some body" or "some part" in this application is only one of the embodiments, for the convenience of reading, and not to limit the scope of protection of this application. As long as it contains the above-mentioned features and has the same function, it should be understood as an equivalent technical solution of this application.

[0052] It should be noted that the components included in the "unit", "assembly", "mechanism" and "device" of this application can also be flexibly combined, that is, modular production can be carried out according to actual needs to facilitate modular assembly. The division of the above components in this application is only one of the embodiments, for the convenience of reading, and not to limit the scope of protection of this application. As long as the above components are included and have the same functions, it should be understood that it is an equivalent technical solution of this application.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The term "and / or" used in the present invention includes any and all combinations of one or more related listed items.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] It should be noted that when an element is referred to as being "fixed on", "set on", "fixed on" or "installed on" another element, it can be directly on the other element or there can be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a central element at the same time. Further, when an element is considered to be "fixed transmission connected" to another element, the two can be fixed in a detachable connection manner or in a non-detachable connection, as long as power transmission can be achieved, such as socketing, snap-on, one-piece molding fixation, welding, etc., which can be achieved in the prior art and will not be repeated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0058] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0059] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An integrated milling cutter assembly, characterized in that: include: A boot body, wherein the boot body is provided with a receiving cavity extending in the axial direction and open at both ends, and an outer side wall of the boot body is provided with an assembly portion for assembly and connection with a milling handle; A milling cutter, wherein the milling cutter portion is inserted into the accommodating cavity and rotatably cooperates with the boot body, and the milling cutter abuts against an opening at one end of the accommodating cavity; and A limit sleeve, wherein the limit sleeve is arranged on part of the outer peripheral side of the milling cutter and cooperates with the gap of the milling cutter, the limit sleeve is partially blocked at the other end opening of the accommodating cavity and tightly cooperates with the boot body, and the limit sleeve is located on one side of the accommodating cavity and cooperates with the axial limit of the milling cutter.

2. The integrated milling cutter assembly according to claim 1, characterized in that: The integrated milling cutter assembly also includes a first bearing arranged in the accommodating cavity and close to the opening at the other end, the first bearing having a first outer ring and a first inner ring that are rotatably matched, the first inner ring being sleeved on the outer side wall of the milling cutter, the first outer ring being radially limited in cooperation with the boot body, and the first outer ring being axially limited in cooperation with the limit sleeve.

3. The integrated milling cutter assembly according to claim 2, characterized in that: The integrated milling cutter assembly also includes a second bearing arranged in the accommodating cavity and close to the opening at one end, the second bearing has a second outer ring and a second inner ring that are rotatably matched, the second inner ring is sleeved on the outer side wall of the milling cutter, and the second outer ring is radially limitedly matched with the boot body.

4. The integrated milling cutter assembly according to claim 3, characterized in that: The inner side wall of the accommodating cavity is provided with a first limiting portion, and the outer side wall of the milling cutter is provided with a second limiting portion. The first limiting portion and the second limiting portion are respectively matched with the axial limiting portions on two opposite sides of the second outer ring.

5. The integrated milling cutter assembly according to claim 2, characterized in that: The inner side wall of the accommodating cavity is further provided with a third limiting portion, and the third limiting portion and the limiting sleeve are respectively axially limited to the two opposite sides of the first outer ring.

6. The integrated milling cutter assembly according to claim 2, characterized in that: The inner wall of the accommodating cavity is further provided with a first positioning portion, and the outer wall of the limiting sleeve is provided with a second positioning portion. When the second positioning portion is positioned and matched with the first positioning portion, the side of the limiting sleeve located in the accommodating cavity is limitedly matched with the first outer ring.

7. The integrated milling cutter assembly according to claim 6, characterized in that: The first positioning portion includes a first positioning shoulder, the second positioning portion includes a second positioning shoulder, and the first positioning shoulder and the second positioning shoulder are in contact with each other for positioning.

8. The integrated milling cutter assembly according to any one of claims 1 to 7, characterized in that: The boot body is also provided with an insertion cavity connected to the rear end of the accommodating cavity, the insertion cavity has an insertion opening arranged toward the milling handle, the limiting sleeve is partially arranged in the accommodating cavity and the insertion cavity through the insertion opening, and the assembly part is arranged close to the insertion opening.

9. The integrated milling cutter assembly according to claim 8, characterized in that: The boot body includes a boot foot, a boot bow and a boot rod, the opposite ends of the boot bow are respectively connected to the boot foot and the boot rod, the boot rod is provided with the accommodating chamber, the insertion chamber and the assembly portion, the boot bow is provided with a working chamber which is communicated with the accommodating chamber and has a side opening, and the boot foot is provided with an insertion chamber which is communicated with the working chamber; the milling cutter includes a tool tip section, a blade section and a tool rod section, the opposite ends of the blade section are respectively connected to the tool tip section and the tool rod section, the tool tip section is inserted in the insertion chamber and rotatably cooperates with the boot foot, the blade section is located in the working chamber, the tool rod section is partially arranged in the accommodating chamber and the insertion chamber and rotatably cooperates with the boot rod, the side of the limit sleeve facing away from the milling handle is limitedly cooperated with the tool rod section, and the end of the tool rod section away from the blade section is transmission connected to the milling handle.

10. A milling device, characterized in that: It comprises a milling handle and an integrated milling cutter assembly as claimed in any one of claims 1 to 9, wherein the milling handle is assembled and connected with the assembly portion, and the milling handle is transmission-connected with the milling cutter to drive the milling cutter to rotate axially.

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