Boot body assembly with detachable boot arch, milling cutter structure and milling device

Abstract

The utility model relates to a boot body assembly with a detachable boot arch, a milling cutter structure and a milling device. The assembly connection between the boot arch and the boot cover can be realized by connecting the first assembly part and the second assembly part, so that the milling cutter can be stably supported to mill the bone tissue. During use, even if the boot arch is deformed, since the boot arch and the boot cover are assembled by the detachable connection between the first assembly part and the second assembly part, the boot arch can be removed and replaced separately by simply releasing the connection between the first assembly part and the second assembly part, that is, only the boot arch needs to be replaced separately, and the replacement cost is low, thereby reducing the use cost.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a boot body component with a detachable boot arch, a milling cutter structure 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 a milling cutter assembly and a milling handle. The milling cutter assembly is mounted on the milling handle, and the milling handle drives the milling cutter to rotate at high speed to achieve milling of bone tissue.

[0003] The existing milling cutter assembly generally includes a milling cutter and a boot body that is mounted on the milling cutter. During the use of the milling handle, the boot body is prone to deformation, which may cause the milling cutter to break due to uneven force during high-speed rotation. The traditional practice is to replace the boot body regularly or after a limited number of uses, for example, turning the boot body into a disposable component. The replacement cost of the boot body is high, resulting in increased use costs. Utility Model Content

[0004] Based on this, it is necessary to provide a boot body assembly, a milling cutter structure and a milling device with a detachable boot arch to address the problem that the replacement cost of the boot body is high and the cost of use is increased.

[0005] The technical solution is as follows:

[0006] In one aspect, a boot body assembly with a detachable boot arch is provided, comprising:

[0007] A shoe bow, one end of which is provided with a shoe foot, and the shoe bow is further provided with a first assembly portion spaced apart from the shoe foot; and

[0008] A boot cover, wherein the boot cover and the boot foot are spaced apart to form a milling space open to the side of the boot arch, and the boot cover is provided with a second assembly part detachably connected to the first assembly part; the boot cover also includes an installation cavity communicated with the milling space, and the installation cavity is used to insert a milling cutter and make the blade of the milling cutter located in the milling space.

[0009] The technical solution is further described below:

[0010] In one embodiment, the first assembly portion and the second assembly portion are concave-convexly matched and axially limitedly matched.

[0011] In one embodiment, the first assembly portion is provided with a first plug-in protrusion, the second assembly portion is provided with a first slot, and the first plug-in protrusion is plug-matched with the first slot.

[0012] In one embodiment, the first assembly portion is further provided with a second slot disposed adjacent to the first plug-in protrusion, and the second assembly portion is further provided with a second plug-in protrusion disposed adjacent to the first slot, and the second plug-in protrusion is plug-fitted with the second slot.

[0013] In one embodiment, the boot body assembly also includes a connecting sleeve, which is used to be sleeved on the outer peripheral side of the milling cutter and spaced apart from the milling cutter. A part of the connecting sleeve is arranged in the installation cavity and is fastened to the boot sleeve, and another part of the connecting sleeve is arranged outside the installation cavity and is fastened to the handle body of the milling handle.

[0014] In one of the embodiments, the outer side wall of the connecting sleeve is provided with a first external thread, the inner side wall of the mounting cavity is provided with a first internal thread, and the first external thread is threadably matched with the first internal thread.

[0015] In one embodiment, the boot body assembly also includes a support bearing, which is arranged in the installation cavity. The support bearing includes an outer ring and an inner ring that are rotatably matched. The inner ring is sleeved on the outer wall of the milling cutter. The outer ring is radially limited in the boot sleeve, and the opposite sides of the outer ring are respectively limited in the inner wall of the installation cavity and the connecting sleeve.

[0016] In one of the embodiments, a limiting shoulder is provided on the inner side wall of the installation cavity, and the limiting shoulder is located on the side of the outer ring away from the connecting sleeve, and the limiting shoulder and the connecting sleeve are respectively abutted against two opposite sides of the outer ring.

[0017] On the other hand, a milling cutter structure is provided, including a milling cutter and a boot body assembly with a detachable boot arch, wherein the milling cutter can be rotatably inserted in the mounting cavity, and the blade of the milling cutter is located in the milling space, and the tip of the milling cutter can rotatably cooperate with the boot foot.

[0018] On the other hand, a milling device is provided, characterized in that it includes a milling handle and the milling cutter structure, the milling handle is assembled and connected to the boot sleeve and can achieve radial limiting cooperation with the boot bow, and the milling handle is transmission connected to the milling cutter to drive the milling cutter to rotate axially.

[0019] In one embodiment, the milling handle includes a handle body, a transmission sleeve and a locking assembly, the handle body has an assembly cavity, the transmission sleeve can be rotatably arranged in the assembly cavity, the transmission sleeve is used for transmission connection with the milling cutter, and the locking assembly is configured to lock or release the milling cutter and the transmission sleeve; wherein, when the locking assembly locks the milling cutter and the transmission sleeve, the locking assembly and the boot bow are radially limited; when the locking assembly releases the milling cutter and the transmission sleeve, the locking assembly and the boot bow are offset along the axial direction of the milling cutter.

[0020] In one embodiment, the outer wall of the transmission sleeve is provided with a locking through hole, the transmission sleeve is provided with a transmission cavity for inserting the milling cutter, the locking through hole is communicated with the transmission cavity, the locking assembly includes a locking member, the locking member is arranged corresponding to the locking through hole, and the locking member can reciprocate axially along the locking through hole relative to the transmission sleeve; wherein the locking member is configured to be able to partially protrude into the transmission cavity to lock the milling cutter and the transmission sleeve, or to be able to partially protrude to the outer wall of the transmission sleeve to loosen the milling cutter and the transmission sleeve.

[0021] In one embodiment, the locking assembly further comprises:

[0022] A locking sleeve, which is sleeved on the outer side wall of the handle body and is movably connected to the handle body, so that the locking sleeve can reciprocate between a locking position and a releasing position along the axial direction of the milling cutter relative to the handle body; and

[0023] A linkage module, which is arranged on the outer peripheral side of the transmission sleeve and is in transmission cooperation with the locking sleeve;

[0024] Among them, when the locking sleeve is in the locking position, the locking sleeve and the boot bow are radially limited, and the linkage module and the locking piece are force-coordinated so that the locking piece partially protrudes into the transmission cavity to lock the milling cutter and the transmission sleeve; when the locking sleeve is in the loosening position, the locking sleeve and the boot bow are axially staggered along the milling cutter, and the linkage module and the locking piece are force-coordinated without force so that the locking piece partially protrudes to the outer side wall of the transmission sleeve to loosen the milling cutter and the transmission sleeve.

[0025] In one embodiment, the handle body is provided with a guide groove extending along the axial direction of the milling cutter, and the linkage module comprises:

[0026] A movable sleeve, wherein the movable sleeve is movably disposed between the handle body and the transmission sleeve, and the movable sleeve includes a first sleeve body having a first inner diameter and a second sleeve body having a second inner diameter, and the first inner diameter is smaller than the second inner diameter; and

[0027] A linkage member, wherein the linkage member is movably disposed in the guide slot, and the linkage member partially protrudes from the guide slot until it contacts and cooperates with the lock sleeve, and the linkage member partially protrudes from the guide slot until it contacts and cooperates with the movable sleeve;

[0028] Wherein, when the locking sleeve is in the locking position, the movable sleeve is moved under the drive of the linkage member so that the first sleeve body and the locking member are force-coordinated so that the locking member partially protrudes into the transmission cavity to lock the milling cutter and the transmission sleeve; when the locking sleeve is in the releasing position, the movable sleeve is moved under the drive of the linkage member so that the second sleeve body and the locking member are correspondingly arranged so that the locking member partially protrudes to the outer wall of the transmission sleeve to release the milling cutter and the transmission sleeve.

[0029] In one embodiment, the linkage module further includes a first elastic reset member, which is disposed between the locking sleeve and the handle body, and is configured to apply a force along the axial direction of the milling cutter and toward the locking position to the linkage member when the locking sleeve is in the released position;

[0030] And / or, the linkage module also includes a second elastic reset member, which is arranged between the movable sleeve and the transmission sleeve, and the second elastic reset member is configured to apply a force to the movable sleeve along the axial direction of the milling cutter and toward the locking position when the locking sleeve is in the released position.

[0031] In one of the embodiments, the length between the locking position and the releasing position matches the extension length of the guide slot.

[0032] In one embodiment, the outer wall of the transmission sleeve is provided with a first limiting portion, and when the first sleeve body and the locking member are force-coordinated, the movable sleeve and the first limiting portion are limitedly cooperated; when the second sleeve body and the locking member are correspondingly arranged, the movable sleeve and the first limiting portion are spaced apart along the axial direction of the milling cutter.

[0033] In one embodiment, the outer side wall of the handle body is provided with a second limiting portion, and when the locking sleeve is in a locked position, the locking sleeve and the second limiting portion are limitedly cooperated; when the locking sleeve is in a released position, the locking sleeve and the second limiting portion are spaced apart along the axial direction of the milling cutter.

[0034] In one of the embodiments, the milling cutter is provided with a slot corresponding to and connected to the locking through hole, and the locking member can be engaged with the slot.

[0035] The above-mentioned embodiment of the boot body assembly with a detachable boot arch, the milling cutter structure and the milling device can realize the assembly connection between the boot arch and the boot cover through the connection between the first assembly part and the second assembly part, so that the milling cutter can be stably supported to mill the bone tissue. During use, even if the boot arch is deformed, since the boot arch and the boot cover are assembled through the detachable connection between the first assembly part and the second assembly part, it is only necessary to release the connection between the first assembly part and the second assembly part to remove the boot arch alone for replacement, that is, it is only necessary to replace the boot arch alone, and the replacement cost is low, which reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] 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.

[0037] 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.

[0038] Figure 1 An exploded view of a milling device according to an embodiment;

[0039] Figure 2 for Figure 1 A schematic structural diagram of a shoe bow of a milling device;

[0040] Figure 3 for Figure 1 A schematic structural diagram of a boot sleeve of a milling device;

[0041] Figure 4 for Figure 1 A schematic diagram of the structure of the handle structure of the milling device with the locking sleeve in the locked position;

[0042] Figure 5 for Figure 4 A partial enlarged view of part A of the milling device;

[0043] Figure 6 for Figure 1 A schematic diagram of the structure of the handle structure of the milling device with the locking sleeve in a released position;

[0044] Figure 7 for Figure 6 A partial enlarged view of part B of the milling device.

[0045] Description of reference numerals:

[0046] 10. Milling device; 100. Boot body assembly; 110. Boot bow; 111. Boot foot; 112. First assembly part; 1121. First plug-in protrusion; 1122. Second slot; 120. Boot cover; 121. Second assembly part; 1211. First slot; 1212. Second plug-in protrusion; 122. Mounting cavity; 1221. Stop shoulder; 200. Milling space; 300. Side opening; 400. Connecting sleeve; 500. Support bearing; 600. Milling cutter; 610. Cutter Tip; 620, blade; 630, slot; 700, milling handle; 710, handle body; 711, assembly cavity; 712, guide groove; 713, second limiting portion; 720, transmission sleeve; 721, transmission cavity; 722, locking through hole; 723, first limiting portion; 730, locking sleeve; 740, locking member; 750, movable sleeve; 751, first sleeve body; 752, second sleeve body; 760, linkage member; 770, first elastic return member; 780, second elastic return member. DETAILED DESCRIPTION

[0047] 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.

[0048] When traditional milling devices are milling bone tissue, the arch of the boot body will be subjected to a large force and easily deformed. The deformation of the arch will cause the milling cutter to be subjected to uneven force and easily break. The traditional practice is to replace the boot body regularly or for a limited number of uses, or even turn the entire boot body into a disposable component. The replacement cost of the boot body is high, which leads to increased cost of use.

[0049] like Figure 1 As shown, in one embodiment, a milling cutter structure is provided, including a milling cutter 600 and a boot body assembly 100 with a detachable boot arch 110. The boot body assembly 100 with a detachable boot arch 110 can serve as a supporting structure for the milling cutter 600, and the milling cutter 600 can be partially rotatably inserted in the boot body assembly 100, so that the high-speed rotating milling cutter 600 can be used to mill bone tissue. In addition, the replacement cost of the boot body assembly 100 with a detachable boot arch 110 is low, which reduces the cost of use.

[0050] like Figures 1 to 3 As shown, Figure 1As shown, in one embodiment, a boot body assembly 100 with a detachable boot shank 110 is provided, including the boot shank 110 and a boot cover 120.

[0051] like Figure 2 , Figure 4 and Figure 6 As shown, a shoe foot 111 is provided at one end of the shoe arch 110, and the shoe foot 111 and the tip 610 of the milling cutter 600 are rotatably matched through bearings and other means to support the tip 610 of the milling cutter 600, so that the milling cutter 600 is evenly stressed, the possibility of deformation of the milling cutter 600 is reduced, and the service life of the milling cutter 600 is extended. In addition, the shoe arch 110 is provided with a first assembly portion 112 spaced apart from the shoe foot 111, specifically, along the length direction of the shoe arch 110, the first assembly portion 112 is spaced apart from the shoe foot 111.

[0052] like Figure 3 , Figure 4 and Figure 6 As shown, the boot cover 120 and the boot foot 111 are spaced apart to form a milling space 200 open to the side of the boot arch 110. Specifically, along the length direction of the boot arch 110 (eg Figure 4 and Figure 6 As shown in the C direction, the boot cover 120 and the boot foot 111 are spaced apart to form a milling space 200 with an opening on one side, and the milling space 200 has a side opening 300. In addition, the boot cover 120 is provided with a second assembly portion 121 detachably connected to the first assembly portion 112. At the same time, the boot cover 120 also includes an installation cavity 122 connected to the milling space 200. The installation cavity 122 is used to insert the milling cutter 600 and make the blade 620 of the milling cutter 600 located in the milling space 200. Specifically, the milling cutter 600 can be inserted into the installation cavity 122 and inserted into the milling space 200 until the tip 610 of the milling cutter 600 is rotatably matched with the boot foot 111. At this time, the blade 620 of the milling cutter 600 is located in the milling space 200, and the milling cutter 600 is rotatably matched with the boot cover 120, so that the milling cutter 600 can rotate smoothly relative to the boot arch 110 and the boot cover 120 to use the blade 620 to mill the bone tissue at the side opening 300.

[0053] The boot body assembly 100 of the above embodiment can realize the assembly connection between the boot arch 110 and the boot cover 120 through the connection between the first assembly part 112 and the second assembly part 121, so that the milling cutter 600 can be stably supported to mill the bone tissue. During use, even if the boot arch 110 is deformed, since the boot arch 110 and the boot cover 120 are assembled through the detachable connection between the first assembly part 112 and the second assembly part 121, the boot arch 110 can be removed and replaced separately by simply releasing the connection between the first assembly part 112 and the second assembly part 121, that is, only the boot arch 110 needs to be replaced separately, and the replacement cost is low, which reduces the cost of use.

[0054] Optionally, the detachable connection between the first assembly part 112 and the second assembly part 121 can be achieved by plug-in fitting, snap-in fitting, etc., as long as the boot bow 110 and the boot cover 120 can be stably and reliably connected as one, and the boot bow 110 can be conveniently and quickly removed from the boot cover 120 for replacement.

[0055] In one embodiment, the first assembly portion 112 and the second assembly portion 121 are matched in a concave-convex manner and are axially limited. In this way, the assembly connection between the boot bow 110 and the boot cover 120 is achieved through the form of concave-convex matching, and the connection between the boot bow 110 and the boot cover 120 can also be axially limited, that is, the axial movement of the boot bow 110 relative to the boot cover 120 can be limited, ensuring that the milling cutter 600 is evenly stressed and can work stably and reliably. When the boot bow 110 needs to be replaced, the boot bow 110 can be replaced simply and conveniently by simply releasing the concave-convex matching relationship, and the replacement cost is low, which reduces the cost of use.

[0056] It should be noted that the axial direction in the embodiment of the present application may refer to the axial direction along the milling cutter 600 (eg Figure 4 and Figure 6 C direction).

[0057] like Figure 6 As shown, in one embodiment, the first assembly portion 112 is provided with a first plug-in protrusion 1121, and the second assembly portion 121 is provided with a first slot 1211, and the first plug-in protrusion 1121 is plugged and matched with the first slot 1211. In this way, the assembly connection between the shoe bow 110 and the boot cover 120 is realized by plugging and matching between the first plug-in protrusion 1121 and the first slot 1211, and the axial movement of the shoe bow 110 relative to the boot cover 120 can also be restricted; the shoe bow 110 can be replaced separately simply and conveniently by simply pulling out the first plug-in protrusion 1121 from the first slot 1211, and the replacement cost is low, which reduces the use cost.

[0058] like Figure 6As shown, further, the first assembly portion 112 is further provided with a second slot 1122 disposed adjacent to the first plug-in protrusion 1121, and the second assembly portion 121 is further provided with a second plug-in protrusion 1212 disposed adjacent to the first slot 1211, and the second plug-in protrusion 1212 is plugged and matched with the second slot 1122. In this way, by utilizing the plug-in match between the second plug-in protrusion 1212 and the second slot 1122, combined with the plug-in match between the first plug-in protrusion 1121 and the first slot 1211, the assembly connection between the boot bow 110 and the boot cover 120 is more stably and reliably realized, and the axial movement of the boot bow 110 relative to the boot cover 120 can be more stably and reliably restricted. The boot bow 110 can be replaced separately simply and conveniently by simply pulling out the first plug-in protrusion 1121 from the first slot 1211 and the second plug-in protrusion 1212 from the second slot 1122, and the replacement cost is low, which reduces the use cost.

[0059] like Figures 4 to 7 As shown, in addition, the boot assembly 100 further includes a connecting sleeve 400. The connecting sleeve 400 is sleeved on the outer peripheral side of the milling cutter 600 and is spaced apart from the milling cutter 600, a portion of the connecting sleeve 400 is disposed in the mounting cavity 122 and is fastened to the boot sleeve 120, thereby realizing an assembly connection between the connecting sleeve 400 and the boot sleeve 120, and another portion of the connecting sleeve 400 is disposed outside the mounting cavity 122 and is fastened to the tool handle body, thereby realizing an assembly connection between the connecting sleeve 400 and the handle body 710, thereby realizing an assembly connection between the boot assembly 100 and the handle body 710.

[0060] The fastening connection between the connecting sleeve 400 and the boot sleeve 120 may be achieved by plug-in fitting or by threaded connection.

[0061] In one embodiment, the outer wall of the connecting sleeve 400 is provided with a first external thread, and the inner wall of the installation cavity 122 is provided with a first internal thread, and the first external thread is threadedly matched with the first internal thread. In this way, the connecting sleeve 400 and the boot cover 120 are stably and reliably assembled and connected through the threaded matching of the first external thread and the first internal thread.

[0062] The fastening connection between the connecting sleeve 400 and the handle body 710 may be achieved by plug-in fitting or by threaded connection.

[0063] In one embodiment, the outer wall of the connecting sleeve 400 is provided with a second external thread, and the inner wall of the handle body 710 is provided with a second internal thread, and the second external thread is threadedly matched with the second internal thread. In this way, the connecting sleeve 400 and the handle body 710 are stably and reliably assembled and connected through the threaded matching of the second external thread and the second internal thread.

[0064] like Figure 4 and Figure 6 As shown, in addition, the boot assembly 100 also includes a support bearing 500. The support bearing 500 is arranged in the installation cavity 122, and the support bearing 500 includes an outer ring and an inner ring that are rotatably matched. In addition, the inner ring is sleeved on the outer wall of the milling cutter 600 and is assembled and connected with the milling cutter 600 by interference fit or the like. In addition, the outer ring is radially limited with the boot sleeve 120, so as to prevent the support bearing 500 from radially moving relative to the boot sleeve 120, and the opposite sides of the outer ring are respectively limited with the inner side wall of the installation cavity 122 and the connecting sleeve 400, so as to prevent the support bearing 500 from axially moving relative to the boot sleeve 120, thereby preventing the milling cutter 600 from radially and axially moving relative to the boot sleeve 120.

[0065] like Figure 4 As shown, specifically, the inner wall of the mounting cavity 122 is provided with a limiting shoulder 1221, and the limiting shoulder 1221 is located on the side of the outer ring away from the connecting sleeve 400, so that the limiting shoulder 1221 and the connecting sleeve 400 are respectively abutted against the opposite sides of the outer ring to achieve axial limitation of the outer ring, thereby preventing the support bearing 500 from axially moving relative to the boot sleeve 120, and further preventing the milling cutter 600 from radially and axially moving relative to the boot sleeve 120.

[0066] like Figure 4 and Figure 6 As shown, in one embodiment, a milling device 10 is also provided, including a milling handle 700 and a milling cutter structure of any of the above embodiments.

[0067] The milling handle 700 is assembled and connected with the boot cover 120 and can realize radial limiting cooperation with the boot bow 110, so as to radially constrain the boot bow 110 to prevent the boot bow 110 from radially moving relative to the boot cover 120. Combined with the axial limiting of the boot bow 110 by the boot cover 120, it is ensured that the boot bow 110 and the boot cover 120 will not move relative to each other in the radial and axial directions after being assembled and connected, so that the boot body assembly 100 can stably and reliably support the milling cutter 600, and ensure the stability and reliability of the operation of the milling cutter 600. In addition, the milling handle 700 is transmission-connected with the milling cutter 600 to drive the milling cutter 600 to rotate around its own axis to mill the bone tissue. Moreover, during use, even if the boot bow 110 is deformed, since the boot bow 110 and the boot cover 120 are assembled through the detachable connection between the first assembly part 112 and the second assembly part 121, it is only necessary to release the connection between the first assembly part 112 and the second assembly part 121 to remove the boot bow 110 alone for replacement, that is, it is only necessary to replace the boot bow 110 alone, and the replacement cost is low, thereby reducing the cost of use.

[0068] It should be noted that the milling handle 700 drives the milling cutter 600 to rotate around the axial direction of the milling cutter 600, which can be driven by a rotating drive member such as a motor. Since it can belong to the existing technology, it will not be described here.

[0069] like Figure 5 and Figure 7 As shown, in one embodiment, the milling handle 700 includes a handle body 710, a transmission sleeve 720 and a locking assembly.

[0070] like Figure 5 and Figure 7 As shown, the handle body 710 can be used for the operator to hold during use, and the handle body 710 has an assembly cavity 711. The transmission sleeve 720 can be rotatably arranged in the assembly cavity 711, that is, the transmission sleeve 720 can rotate around its own axial direction relative to the handle body 710. Optionally, the transmission sleeve 720 can be in the form of a transmission shaft of a motor. The transmission sleeve 720 is used for transmission connection with the milling cutter 600. For example, the transmission sleeve 720 is provided with a transmission cavity 721, and the milling cutter 600 is inserted in the transmission cavity 721. Specifically, the end of the milling cutter 600 opposite to the tool tip 610 is inserted in the transmission cavity 721 and is transmission connected to the transmission sleeve 720. The locking assembly is configured to lock or release the milling cutter 600 and the transmission sleeve 720. As shown Figure 4 and Figure 5 As shown, when the locking assembly locks the milling cutter 600 with the transmission sleeve 720, the locking assembly cooperates with the radial limiting of the boot bow 110. At this time, the locking assembly stably and reliably locks the milling cutter 600 and the transmission sleeve 720 as a whole, avoiding the axial movement of the milling cutter 600 relative to the transmission sleeve 720, so that the transmission sleeve 720 can drive the milling cutter 600 to rotate synchronously. Combined with the radial limiting of the boot bow 110 by the locking assembly, radial movement of the boot bow 110 relative to the boot sleeve 120 is avoided. Combined with the axial limiting of the boot bow 110 by the boot sleeve 120, it is ensured that the boot bow 110 and the boot sleeve 120 will not have radial and axial relative movement after being assembled and connected, so that the boot body assembly 100 can stably and reliably support the milling cutter 600, and ensure the stability and reliability of the operation of the milling cutter 600. As shown Figure 6 and Figure 7 As shown, when the locking assembly loosens the milling cutter 600 and the transmission sleeve 720, the locking assembly and the boot bow 110 are offset along the axial direction of the milling cutter 600. At this time, the milling cutter 600 and the transmission sleeve 720 are loosened by the locking assembly, and the milling cutter 600 can be pulled out of the transmission cavity 721 for replacement. Combined with the axial offset between the locking assembly and the boot bow 110, even if the boot bow 110 is deformed, it is only necessary to release the connection between the first assembly part 112 and the second assembly part 121 to remove the boot bow 110 alone for replacement, that is, it is only necessary to replace the boot bow 110 alone, and the replacement cost is low, thereby reducing the cost of use.

[0071] It should be noted that the locking assembly and the shoe bow 110 are staggered in the axial direction of the milling cutter 600 , which means that the locking assembly and the shoe bow 110 are staggered in the axial direction, so that the locking assembly will not cause constraint interference to the radial direction of the shoe bow 110 .

[0072] like Figure 5 and Figure 7 As shown, in one embodiment, the outer wall of the transmission sleeve 720 is provided with a locking through hole 722, and the transmission sleeve 720 is provided with a transmission cavity 721 for inserting the milling cutter 600, and the locking through hole 722 is connected with the transmission cavity 721. Specifically, the locking through hole 722 radially extends from the outer wall of the transmission sleeve 720 to be connected with the transmission cavity 721. After the milling cutter 600 is inserted into the transmission cavity 721, the locking assembly is used to lock the milling cutter 600 and the transmission sleeve 720, so that the milling cutter 600 can be stably and reliably locked and assembled, and the axial movement of the milling cutter 600 is effectively restrained, so as to ensure that the milling cutter 600 works stably and reliably. When the milling cutter 600 needs to be replaced, it is only necessary to loosen the milling cutter 600 and the transmission sleeve 720 by using the locking assembly, and the milling cutter 600 can be pulled out of the transmission cavity 721 for replacement, and the replacement efficiency is high. In addition, the locking assembly includes a locking member 740. As Figure 5 and Figure 7 As shown, the locking member 740 is arranged corresponding to the locking through hole 722, and the locking member 740 can reciprocate along the axial direction of the locking through hole 722 relative to the transmission sleeve 720, that is, the locking member 740 can reciprocate along the radial direction of the transmission sleeve 720 relative to the transmission sleeve 720. Specifically, the locking member 740 is configured to be able to partially protrude into the transmission cavity 721 to lock the milling cutter 600 with the transmission sleeve 720 or to partially protrude to the outer side wall of the transmission sleeve 720 to release the milling cutter 600 from the transmission sleeve 720. In this way, the locking or releasing of the milling cutter 600 and the transmission sleeve 720 is achieved by reciprocating along the radial direction of the transmission sleeve 720 by the locking member 740, which not only effectively restricts the axial movement of the milling cutter 600 and ensures that the milling cutter 600 works stably and reliably, but also the milling cutter 600 can be pulled out from the transmission cavity 721 for replacement, and the replacement efficiency is high.

[0073] Optionally, the locking member 740 may be in the form of a locking ball, a locking pin, or the like.

[0074] Furthermore, the locking assembly also includes a locking sleeve 730 and a linkage module.

[0075] Among them, the locking sleeve 730 is sleeved on the outer wall of the handle body 710 and is movably connected to the handle body 710. Specifically, the locking sleeve 730 is connected to the handle body 710 and can reciprocate between a locked position and a released position along the axial direction of the milling cutter 600 relative to the handle body 710.

[0076] In one embodiment, the locking sleeve 730 is threadedly connected to the handle body 710, and the locking sleeve 730 is rotated relative to the handle body 710 to reciprocate between the locked position and the released position. Of course, in other embodiments, the locking sleeve 730 can also be slidably matched with the handle body 710, and the locking sleeve 730 is slid relative to the handle body 710 to reciprocate between the locked position and the released position.

[0077] The linkage module is arranged on the outer peripheral side of the transmission sleeve 720, and the linkage module cooperates with the locking sleeve 730 in transmission. Thus, when the locking sleeve 730 reciprocates between the locking position and the releasing position relative to the handle body 710, the linkage module can be driven to move synchronously.

[0078] Specifically, Figure 4 and Figure 5 As shown, when the locking sleeve 730 is in the locking position, the locking sleeve 730 cooperates with the radial limiting of the boot bow 110. For example, a part of the locking sleeve 730 is arranged on the outer wall of the boot bow 110 to radially limit the boot bow 110, thereby preventing the boot bow 110 from radially moving relative to the boot cover 120. Combined with the axial limiting of the boot bow 110 by the boot cover 120, it is ensured that the boot bow 110 and the boot cover 120 will not have radial and axial relative movement after being assembled and connected, so that the boot body assembly 100 can stably and reliably support the milling cutter 600, thereby ensuring the stability and reliability of the operation of the milling cutter 600. In addition, the linkage module cooperates with the locking member 740 to make the locking member 740 move axially along the locking through hole 722 until it partially protrudes into the transmission cavity 721, thereby locking the milling cutter 600 and the transmission sleeve 720, and then stably and reliably locking the milling cutter 600 and the transmission sleeve 720 as a whole, avoiding axial movement of the milling cutter 600 relative to the transmission sleeve 720, so that the transmission sleeve 720 can drive the milling cutter 600 to rotate synchronously.

[0079] It should be noted that the force applied by the linkage module and the locking member 740 refers to the mutual force between the linkage module and the locking member 740. Specifically, the linkage module applies a force along the axial direction of the locking through hole 722 and toward the transmission cavity 721 to the locking member 740, so that the locking member 740 partially protrudes into the transmission cavity 721, thereby locking the milling cutter 600 and the transmission sleeve 720, and then stably and reliably locking the milling cutter 600 and the transmission sleeve 720 as a whole, preventing the milling cutter 600 from axially moving relative to the transmission sleeve 720, so that the transmission sleeve 720 can drive the milling cutter 600 to rotate synchronously.

[0080] Specifically, Figure 6 and Figure 7As shown, when the lock sleeve 730 is in the released position, the lock sleeve 730 and the shoe bow 110 are offset along the axial direction of the milling cutter 600, and the lock sleeve 730 will not limit the radial direction of the shoe bow 110. Even if the shoe bow 110 is deformed, it is only necessary to release the connection between the first assembly part 112 and the second assembly part 121 to remove the shoe bow 110 for replacement, that is, it is only necessary to replace the shoe bow 110, and the replacement cost is low, which reduces the use cost. In addition, the linkage module and the locking member 740 are non-force-coordinated, so that the locking member 740 moves along the axial direction of the locking through hole 722 to partially protrude to the outer wall of the transmission sleeve 720, thereby loosening the milling cutter 600 and the transmission sleeve 720, and then the milling cutter 600 can be pulled out from the transmission cavity 721 for replacement.

[0081] It should be noted that the linkage module and the locking member 740 have no force cooperation, which means that there is no interaction force between the linkage module and the locking member 740. Specifically, the linkage module is spaced apart from the locking member 740 along the axial direction of the locking through hole 722, so that the locking member 740 partially protrudes to the outer wall of the transmission sleeve 720, thereby loosening the milling cutter 600 from the transmission sleeve 720, and then the milling cutter 600 can be pulled out of the transmission cavity 721 for replacement.

[0082] like Figure 5 and Figure 7 As shown, in one embodiment, the handle body 710 is provided with a guide slot 712 extending along the axial direction of the milling cutter 600 , that is, the guide slot 712 is communicated with the assembly cavity 711 . In addition, the linkage module includes a moving sleeve 750 and a linkage member 760 .

[0083] like Figure 5 and Figure 7 As shown, the movable sleeve 750 is movably disposed between the handle body 710 and the transmission sleeve 720, that is, the movable sleeve 750 can reciprocate relative to the handle body 710 along the axial direction of the milling cutter 600. In addition, the movable sleeve 750 is provided with a first sleeve body 751 having a first inner diameter and a second sleeve body 752 having a second inner diameter, and the first inner diameter is smaller than the second inner diameter.

[0084] like Figure 5 and Figure 7As shown, the linkage member 760 is movably disposed in the guide slot 712, that is, the linkage member 760 can reciprocate relative to the handle body 710 along the extension direction of the guide slot 712. In addition, the linkage member 760 partially protrudes from the guide slot 712 to abut against the locking sleeve 730, and the linkage member 760 partially protrudes from the guide slot 712 to abut against the moving sleeve 750. In this way, when the locking sleeve 730 moves relative to the handle body 710 along the axial direction of the milling cutter 600, it can drive the linkage member 760 to move along the extension direction of the guide slot 712, and then the linkage member 760 drives the moving sleeve 750 to move along the axial direction of the milling cutter 600.

[0085] It should be noted that the locking sleeve 730 drives the linkage member 760 to reciprocate along the extending direction of the guide slot 712, either directly or indirectly with an intermediate element. Similarly, the linkage member 760 drives the movable sleeve 750 to reciprocate along the axial direction of the milling cutter 600, either directly or indirectly with an intermediate element.

[0086] Optionally, the linkage member 760 may be in the form of a ball, a slider, or the like.

[0087] Specifically, Figure 4 and Figure 5 As shown, when the locking sleeve 730 is in the locking position, the movable sleeve 750 is moved under the drive of the linkage member 760 to make the first sleeve body 751 and the locking member 740 cooperate with each other, so that the locking member 740 partially protrudes into the transmission cavity 721, and then the milling cutter 600 and the transmission sleeve 720 are locked and cooperated, and then the milling cutter 600 and the transmission sleeve 720 are stably and reliably locked as a whole, avoiding axial movement of the milling cutter 600 relative to the transmission sleeve 720, so that the transmission sleeve 720 can drive the milling cutter 600 to rotate synchronously.

[0088] More specifically, if Figure 4 and Figure 5As shown, the locking sleeve 730 moves relative to the handle body 710 toward the locking position until it moves to the locking position, causing the linkage member 760 to move along the guide groove 712 toward the locking position, and then the movable sleeve 750 is driven by the linkage member 760 to move along the axial direction of the milling cutter 600 toward the locking position, and then the first sleeve body 751 moves to the corresponding setting along the axial direction of the milling cutter 600 with the locking member 740. Since the inner diameter of the first sleeve body 751 is small, the first The sleeve body 751 interferes with the locking piece 740 and applies a resistance force to the locking piece 740 along the axial direction of the locking through hole 722 and toward the transmission cavity 721, so that the locking piece 740 partially protrudes into the transmission cavity 721, thereby locking the milling cutter 600 and the transmission sleeve 720, and then stably and reliably locking the milling cutter 600 and the transmission sleeve 720 as a whole, avoiding axial movement of the milling cutter 600 relative to the transmission sleeve 720, so that the transmission sleeve 720 can drive the milling cutter 600 to rotate synchronously.

[0089] Specifically, Figure 6 and Figure 7 As shown, when the locking sleeve 730 is in the released position, the movable sleeve 750 is moved under the drive of the linkage member 760 to make the second sleeve body 752 and the locking member 740 correspond to each other, that is, the second sleeve body 752 and the locking member 740 correspond to each other in the axial direction of the milling cutter 600, so that the locking member 740 partially protrudes to the outer wall of the transmission sleeve 720, thereby loosening the milling cutter 600 and the transmission sleeve 720, and then the milling cutter 600 can be pulled out of the transmission cavity 721 for replacement.

[0090] More specifically, if Figure 6 and Figure 7 As shown, when the locking sleeve 730 moves toward the released position relative to the handle body 710 until it moves to the released position, the linkage member 760 moves along the guide groove 712 toward the released position, and then the movable sleeve 750 is driven by the linkage member 760 to move along the axial direction of the milling cutter 600 toward the released position, and then the second sleeve 752 and the locking member 740 are correspondingly arranged along the axial direction of the milling cutter 600. Since the inner diameter of the second sleeve 752 is larger, there is no interaction force between the second sleeve 752 and the locking member 740, so that the locking member 740 partially protrudes to the outer wall of the transmission sleeve 720, thereby loosening the milling cutter 600 and the transmission sleeve 720, and then the milling cutter 600 can be pulled out of the transmission cavity 721 for replacement.

[0091] like Figure 1 , Figure 5 and Figure 7As shown, in one embodiment, the linkage module further includes a first elastic reset member 770. The first elastic reset member 770 is disposed between the lock sleeve 730 and the handle body 710. Optionally, the first elastic reset member 770 is sleeved on the outer side wall of the handle body 710, one end of the first elastic reset member 770 is connected to the outer side wall of the handle body 710, and the other end of the first elastic reset member 770 is connected to the linkage member 760. The first locking cam 730 is configured to move the movable sleeve 750 along the axial direction of the milling cutter 600 toward the locking position through the linkage member 760 when the locking sleeve 730 is in the released position. The axial correspondence of the cutter 600 is set. Since the inner diameter of the first sleeve 751 is small, the first sleeve 751 conflicts with the locking member 740 and applies a resistance force along the axial direction of the locking through hole 722 and toward the transmission cavity 721 to the locking member 740, so that the locking member 740 partially protrudes into the transmission cavity 721, thereby locking the milling cutter 600 and the transmission sleeve 720, and then stably and reliably locking the milling cutter 600 and the transmission sleeve 720 as a whole, avoiding axial movement of the milling cutter 600 relative to the transmission sleeve 720, so that the transmission sleeve 720 can drive the milling cutter 600 to rotate synchronously. Correspondingly, when the locking sleeve 730 moves from the locked position toward the released position, the locking sleeve 730 causes the linkage member 760 to move along the guide groove 712 toward the released position, so that the linkage member 760 applies a force to the first elastic return member 770, causing the first elastic return member 770 to deform (for example, compressively deform or tensilely deform), thereby causing the first elastic return member 770 to apply a force along the axial direction of the milling cutter 600 and toward the locked position to the linkage member 760, until the locking sleeve 730 moves to the released position, and the first elastic return member 770 is in an extreme state of deformation.

[0092] The first elastic return member 770 may be a component with an elastic return function, such as a spring.

[0093] like Figure 1 , Figure 5 and Figure 7As shown, in one embodiment, the linkage module further includes a second elastic reset member 780. The second elastic reset member 780 is disposed between the movable sleeve 750 and the transmission sleeve 720. Optionally, the second elastic reset member 780 is sleeved on the outer side wall of the transmission sleeve 720, one end of the second elastic reset member 780 is connected to the outer side wall of the transmission sleeve 720, and the other end of the second elastic reset member 780 is connected to the movable sleeve 750. The second elastic reset member 780 is configured to apply a force to the movable sleeve 750 along the axial direction of the milling cutter 600 and toward the locking position when the locking sleeve 730 is in the released position. In this way, when the locking sleeve 730 moves from the released position to the locked position, the linkage member 760 moves along the guide groove 712 toward the locking position, and then the movable sleeve 750 moves along the axial direction of the milling cutter 600 toward the locking position under the action of the second elastic reset member 780, and then the first sleeve body 751 moves to the axial direction of the milling cutter 600 with the locking member 740. Correspondingly, since the inner diameter of the first sleeve 751 is smaller, the first sleeve 751 contacts the locking member 740 and applies a resistance force along the axial direction of the locking through hole 722 and toward the transmission cavity 721 to the locking member 740, so that the locking member 740 partially protrudes into the transmission cavity 721, thereby locking the milling cutter 600 and the transmission sleeve 720, and then stably and reliably locking the milling cutter 600 and the transmission sleeve 720 as a whole, avoiding axial movement of the milling cutter 600 relative to the transmission sleeve 720, so that the transmission sleeve 720 can drive the milling cutter 600 to rotate synchronously. Correspondingly, when the locking sleeve 730 moves from the locked position toward the released position, the locking sleeve 730 causes the linkage member 760 to move along the guide groove 712 toward the released position, so that the linkage member 760 drives the movable sleeve 750 to move along the axial direction of the milling cutter 600 toward the released position, thereby causing the movable sleeve 750 to apply a force to the second elastic return member 780 to cause the second elastic return member 780 to deform (for example, compressively deform or tensilely deform), thereby causing the second elastic return member 780 to apply a force along the axial direction of the milling cutter 600 and toward the locked position to the movable sleeve 750, until the locking sleeve 730 moves to the released position, and the second elastic return member 780 is in an extreme state of deformation.

[0094] The second elastic reset member 780 may be a component with elastic reset function such as a spring.

[0095] In one embodiment, the length between the locking position and the releasing position matches the extension length of the guide slot 712. In this way, the moving distance of the linkage member 760 relative to the handle body 710 matches the moving distance of the locking sleeve 730 relative to the handle body 710, ensuring the accuracy of the axial movement of the moving sleeve 750 relative to the handle body 710 along the milling cutter 600, thereby ensuring that the moving sleeve 750 accurately moves to the point where the first sleeve 751 and the locking member 740 are force-matched or moves to the point where the second sleeve 752 and the locking member 740 are correspondingly arranged, thereby ensuring that the milling cutter 600 is accurately locked or released.

[0096] like Figure 5 and Figure 7 As shown, in addition, the outer wall of the transmission sleeve 720 is provided with a first limiting portion 723. Among them, when the first sleeve body 751 and the locking member 740 are force-matched, the movable sleeve 750 is limited and matched with the first limiting portion 723; when the second sleeve body 752 and the locking member 740 are correspondingly arranged, the movable sleeve 750 and the first limiting portion 723 are spaced along the axial direction of the milling cutter 600. In this way, the movable sleeve 750 is limited by the first limiting portion 723, and the axial movement of the movable sleeve 750 relative to the handle body 710 along the milling cutter 600 can be limited, so as to ensure that the movable sleeve 750 moves more accurately, and then ensure that the movable sleeve 750 moves accurately to make the first sleeve body 751 and the locking member 740 force-matched or move to make the second sleeve body 752 and the locking member 740 correspondingly arranged, and then ensure that the milling cutter 600 is accurately locked or released.

[0097] The first limiting portion 723 may be in the form of a limiting clamp ring or a limiting retaining ring.

[0098] like Figure 5 and Figure 7 As shown, in addition, the outer side wall of the handle body 710 is provided with a second limiting portion 713. When the lock sleeve 730 is in the locking position, the lock sleeve 730 and the second limiting portion 713 are limited and matched; when the lock sleeve 730 is in the release position, the lock sleeve 730 and the second limiting portion 713 are spaced along the axial direction of the milling cutter 600. In this way, the lock sleeve 730 is limited by the second limiting portion 713, and the lock sleeve 730 can be limited relative to the handle body 710 along the axial movement of the milling cutter 600, so as to prevent the lock sleeve 730 from falling off from the handle body 710, and can also ensure that the movable sleeve 750 moves more accurately, thereby ensuring that the movable sleeve 750 moves accurately to make the first sleeve 751 and the locking member 740 cooperate with each other or move to make the second sleeve 752 and the locking member 740 correspondingly arranged, and then ensure that the milling cutter 600 is accurately locked or released.

[0099] The second limiting portion 713 may be in the form of a limiting nut or a limiting end cover.

[0100] like Figure 1 As shown, in one embodiment, the milling cutter 600 is provided with a slot 630 corresponding to and communicating with the locking through hole 722, and the locking member 740 can be engaged with the slot 630. In this way, when the locking member 740 partially protrudes into the transmission cavity 721 and engages with the slot 630, the milling cutter 600 and the transmission sleeve 720 can be locked as a whole more stably and reliably, and the axial movement of the milling cutter 600 can be more effectively avoided. In addition, there is no need to set a contacting part such as a shoulder on the milling cutter 600, which reduces the processing difficulty of the milling cutter 600.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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. A boot body assembly with a detachable boot arch, characterized in that: include: A boot bow, one end of which is provided with a boot foot, and the boot bow is further provided with a first assembly portion spaced apart from the boot foot; and A boot cover, wherein the boot cover and the boot foot are spaced apart to form a milling space open to the side of the boot arch, and the boot cover is provided with a second assembly part detachably connected to the first assembly part; the boot cover also includes an installation cavity communicated with the milling space, and the installation cavity is used to insert a milling cutter and make the blade of the milling cutter located in the milling space.

2. The boot body assembly with a detachable boot arch according to claim 1, characterized in that: The first assembly portion and the second assembly portion are concave-convexly matched and axially limitedly matched.

3. The boot body assembly with a detachable boot arch according to claim 2, characterized in that: The first assembly portion is provided with a first plugging protrusion, and the second assembly portion is provided with a first slot, and the first plugging protrusion is plugged and matched with the first slot.

4. The boot body assembly with a detachable boot arch according to claim 3, characterized in that: The first assembly portion is further provided with a second slot adjacent to the first plugging protrusion, and the second assembly portion is further provided with a second plugging protrusion adjacent to the first slot, and the second plugging protrusion is plug-fitted with the second slot.

5. The boot body assembly with a detachable boot arch according to any one of claims 1 to 4, characterized in that: The boot body assembly also includes a connecting sleeve, which is used to be sleeved on the outer peripheral side of the milling cutter and spaced apart from the milling cutter. A part of the connecting sleeve is arranged in the installation cavity and is tightly connected to the boot sleeve, and the other part of the connecting sleeve is arranged outside the installation cavity and is tightly connected to the handle body of the milling handle.

6. The boot body assembly with a detachable boot arch according to claim 5, characterized in that: The outer side wall of the connecting sleeve is provided with a first external thread, the inner side wall of the mounting cavity is provided with a first internal thread, and the first external thread is threadably matched with the first internal thread.

7. The boot body assembly with a detachable boot arch according to claim 5, characterized in that: The boot body assembly also includes a support bearing, which is arranged in the installation cavity. The support bearing includes an outer ring and an inner ring that are rotatably matched. The inner ring is sleeved on the outer wall of the milling cutter. The outer ring is radially limited in position with the boot sleeve, and the opposite sides of the outer ring are respectively limited in position with the inner wall of the installation cavity and the connecting sleeve.

8. The boot body assembly with a detachable boot arch according to claim 7, characterized in that: The inner side wall of the installation cavity is provided with a limiting shoulder, and the limiting shoulder is located at a side of the outer ring away from the connecting sleeve. The limiting shoulder and the connecting sleeve are respectively in contact with two opposite sides of the outer ring.

9. A milling cutter structure, characterized in that: It comprises a milling cutter and a detachable boot body assembly as claimed in any one of claims 1 to 8, wherein the milling cutter is rotatably inserted in the mounting cavity, and the blade of the milling cutter is located in the milling space, and the tip of the milling cutter is rotatably matched with the boot foot.

10. A milling device, characterized in that: It comprises a milling handle and a milling cutter structure as claimed in claim 9, wherein the milling handle is mateably connected with the boot sleeve and can realize radial limiting cooperation with the boot bow, and the milling handle is transmission-connected with the milling cutter to drive the milling cutter to rotate axially.

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